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        "vert": "#extension GL_EXT_shader_explicit_arithmetic_types_int32: require\nprecision highp float;\n#define QUATER_PI         0.78539816340\n#define HALF_PI           1.57079632679\n#define PI                3.14159265359\n#define PI2               6.28318530718\n#define PI4               12.5663706144\n#define INV_QUATER_PI     1.27323954474\n#define INV_HALF_PI       0.63661977237\n#define INV_PI            0.31830988618\n#define INV_PI2           0.15915494309\n#define INV_PI4           0.07957747155\n#define EPSILON           1e-6\n#define EPSILON_LOWP      1e-4\n#define LOG2              1.442695\n#define EXP_VALUE         2.71828183\n#define FP_MAX            65504.0\n#define FP_SCALE          0.0009765625\n#define FP_SCALE_INV      1024.0\n#define GRAY_VECTOR       vec3(0.299, 0.587, 0.114)\n#define LIGHT_MAP_TYPE_DISABLED 0\n#define LIGHT_MAP_TYPE_ALL_IN_ONE 1\n#define LIGHT_MAP_TYPE_INDIRECT_OCCLUSION 2\n#define REFLECTION_PROBE_TYPE_NONE 0\n#define REFLECTION_PROBE_TYPE_CUBE 1\n#define REFLECTION_PROBE_TYPE_PLANAR 2\n#define REFLECTION_PROBE_TYPE_BLEND 3\n#define REFLECTION_PROBE_TYPE_BLEND_AND_SKYBOX 4\n#define LIGHT_TYPE_DIRECTIONAL 0.0\n#define LIGHT_TYPE_SPHERE 1.0\n#define LIGHT_TYPE_SPOT 2.0\n#define LIGHT_TYPE_POINT 3.0\n#define LIGHT_TYPE_RANGED_DIRECTIONAL 4.0\n#define IS_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_DIRECTIONAL)) < EPSILON_LOWP)\n#define IS_SPHERE_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPHERE)) < EPSILON_LOWP)\n#define IS_SPOT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPOT)) < EPSILON_LOWP)\n#define IS_POINT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_POINT)) < EPSILON_LOWP)\n#define IS_RANGED_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_RANGED_DIRECTIONAL)) < EPSILON_LOWP)\n#define TONE_MAPPING_ACES 0\n#define TONE_MAPPING_LINEAR 1\n#define SURFACES_MAX_TRANSMIT_DEPTH_VALUE 999999.0\n#ifndef CC_SURFACES_DEBUG_VIEW_SINGLE\n  #define CC_SURFACES_DEBUG_VIEW_SINGLE 1\n#endif\n#ifndef CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC\n  #define CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC 2\n#endif\nstruct StandardVertInput {\n  highp vec4 position;\n  vec3 normal;\n  vec4 tangent;\n};\nlayout(location = 0) in vec3 a_position;\nlayout(location = 1) in vec3 a_normal;\nlayout(location = 2) in vec2 a_texCoord;\nlayout(location = 3) in vec4 a_tangent;\n#if CC_USE_SKINNING\n    layout(location = 4) in u32vec4 a_joints;\n  layout(location = 5) in vec4 a_weights;\n#endif\n#if USE_INSTANCING\n  #if CC_USE_BAKED_ANIMATION\n    layout(location = 6) in highp vec4 a_jointAnimInfo;\n  #endif\n  layout(location = 7) in vec4 a_matWorld0;\n  layout(location = 8) in vec4 a_matWorld1;\n  layout(location = 9) in vec4 a_matWorld2;\n  #if CC_USE_LIGHTMAP\n    layout(location = 10) in vec4 a_lightingMapUVParam;\n  #endif\n  #if CC_USE_REFLECTION_PROBE || CC_RECEIVE_SHADOW\n    #if CC_RECEIVE_SHADOW\n    #endif\n    layout(location = 11) in vec4 a_localShadowBiasAndProbeId;\n  #endif\n  #if CC_USE_REFLECTION_PROBE\n    layout(location = 12) in vec4 a_reflectionProbeData;\n  #endif\n  #if CC_USE_LIGHT_PROBE\n    layout(location = 13) in vec4 a_sh_linear_const_r;\n    layout(location = 14) in vec4 a_sh_linear_const_g;\n    layout(location = 15) in vec4 a_sh_linear_const_b;\n  #endif\n#endif\n#if CC_USE_MORPH\n    int getVertexId() {\n      return gl_VertexIndex;\n    }\n#endif\nhighp float decode32 (highp vec4 rgba) {\n  rgba = rgba * 255.0;\n  highp float Sign = 1.0 - (step(128.0, (rgba[3]) + 0.5)) * 2.0;\n  highp float Exponent = 2.0 * (mod(float(int((rgba[3]) + 0.5)), 128.0)) + (step(128.0, (rgba[2]) + 0.5)) - 127.0;\n  highp float Mantissa = (mod(float(int((rgba[2]) + 0.5)), 128.0)) * 65536.0 + rgba[1] * 256.0 + rgba[0] + 8388608.0;\n  return Sign * exp2(Exponent - 23.0) * Mantissa;\n}\n#if CC_USE_MORPH\n  layout(set = 2, binding = 4) uniform CCMorph {\n    vec4 cc_displacementWeights[15];\n    vec4 cc_displacementTextureInfo;\n  };\n  #if CC_MORPH_TARGET_HAS_POSITION\n    layout(set = 2, binding = 8) uniform sampler2D cc_PositionDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    layout(set = 2, binding = 9) uniform sampler2D cc_NormalDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    layout(set = 2, binding = 10) uniform sampler2D cc_TangentDisplacements;\n  #endif\n  vec2 getPixelLocation(vec2 textureResolution, int pixelIndex) {\n    float pixelIndexF = float(pixelIndex);\n    float x = mod(pixelIndexF, textureResolution.x);\n    float y = floor(pixelIndexF / textureResolution.x);\n    return vec2(x, y);\n  }\n  vec2 getPixelCoordFromLocation(vec2 location, vec2 textureResolution) {\n    return (vec2(location.x, location.y) + .5) / textureResolution;\n  }\n  #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      vec4 fetchVec3ArrayFromTexture(sampler2D tex, int pixelIndex) {\n        ivec2 texSize = textureSize(tex, 0);\n        return texelFetch(tex, ivec2(pixelIndex % texSize.x, pixelIndex / texSize.x), 0);\n      }\n  #else\n    vec4 fetchVec3ArrayFromTexture(sampler2D tex, int elementIndex) {\n      int pixelIndex = elementIndex * 4;\n      vec2 location = getPixelLocation(cc_displacementTextureInfo.xy, pixelIndex);\n      vec2 x = getPixelCoordFromLocation(location + vec2(0.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 y = getPixelCoordFromLocation(location + vec2(1.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 z = getPixelCoordFromLocation(location + vec2(2.0, 0.0), cc_displacementTextureInfo.xy);\n      return vec4(\n        decode32(texture(tex, x)),\n        decode32(texture(tex, y)),\n        decode32(texture(tex, z)),\n        1.0\n      );\n    }\n  #endif\n  float getDisplacementWeight(int index) {\n    int quot = index / 4;\n    int remainder = index - quot * 4;\n    if (remainder == 0) {\n      return cc_displacementWeights[quot].x;\n    } else if (remainder == 1) {\n      return cc_displacementWeights[quot].y;\n    } else if (remainder == 2) {\n      return cc_displacementWeights[quot].z;\n    } else {\n      return cc_displacementWeights[quot].w;\n    }\n  }\n  vec3 getVec3DisplacementFromTexture(sampler2D tex, int vertexIndex) {\n  #if CC_MORPH_PRECOMPUTED\n    return fetchVec3ArrayFromTexture(tex, vertexIndex).rgb;\n  #else\n    vec3 result = vec3(0, 0, 0);\n    int nVertices = int(cc_displacementTextureInfo.z);\n    for (int iTarget = 0; iTarget < CC_MORPH_TARGET_COUNT; ++iTarget) {\n      result += (fetchVec3ArrayFromTexture(tex, nVertices * iTarget + vertexIndex).rgb * getDisplacementWeight(iTarget));\n    }\n    return result;\n  #endif\n  }\n  #if CC_MORPH_TARGET_HAS_POSITION\n  vec3 getPositionDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_PositionDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n  vec3 getNormalDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_NormalDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n  vec3 getTangentDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_TangentDisplacements, vertexId);\n  }\n  #endif\n  void applyMorph (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    int vertexId = getVertexId();\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    normal.xyz = normal.xyz + getNormalDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    tangent.xyz = tangent.xyz + getTangentDisplacement(vertexId);\n  #endif\n  }\n  void applyMorph (inout vec4 position) {\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(getVertexId());\n  #endif\n  }\n#endif\n#if CC_USE_SKINNING\n  #if CC_USE_BAKED_ANIMATION\n    layout(set = 2, binding = 3) uniform CCSkinningTexture {\n      highp vec4 cc_jointTextureInfo;\n    };\n    layout(set = 2, binding = 2) uniform CCSkinningAnimation {\n      highp vec4 cc_jointAnimInfo;\n    };\n    layout(set = 2, binding = 7) uniform highp sampler2D cc_jointTexture;\n    void CCGetJointTextureCoords(float pixelsPerJoint, float jointIdx, out highp float x, out highp float y, out highp float invSize)\n    {\n      #if USE_INSTANCING\n        highp float temp = pixelsPerJoint * (a_jointAnimInfo.x * a_jointAnimInfo.y + jointIdx) + a_jointAnimInfo.z;\n      #else\n        highp float temp = pixelsPerJoint * (cc_jointAnimInfo.x * cc_jointTextureInfo.y + jointIdx) + cc_jointTextureInfo.z;\n      #endif\n      invSize = cc_jointTextureInfo.w;\n      highp float tempY = floor(temp * invSize);\n      x = floor(temp - tempY * cc_jointTextureInfo.x);\n      y = (tempY + 0.5) * invSize;\n    }\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      layout(set = 2, binding = 7) uniform highp sampler2D cc_realtimeJoint;\n    #else\n      layout(set = 2, binding = 3) uniform CCSkinning {\n        highp vec4 cc_joints[CC_JOINT_UNIFORM_CAPACITY * 3];\n      };\n    #endif\n  #endif\n  #if CC_USE_BAKED_ANIMATION\n    #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(3.0, i, x, y, invSize);\n        vec4 v1 = texture(cc_jointTexture, vec2((x + 0.5) * invSize, y));\n        vec4 v2 = texture(cc_jointTexture, vec2((x + 1.5) * invSize, y));\n        vec4 v3 = texture(cc_jointTexture, vec2((x + 2.5) * invSize, y));\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #else\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(12.0, i, x, y, invSize);\n        vec4 v1 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 0.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 1.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 2.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 3.5) * invSize, y)))\n        );\n        vec4 v2 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 4.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 5.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 6.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 7.5) * invSize, y)))\n        );\n        vec4 v3 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 8.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 9.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 10.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 11.5) * invSize, y)))\n        );\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n        mat4 getJointMatrix (float i) {\n          float x = i;\n          vec4 v1 = texture(cc_realtimeJoint, vec2( x / 256.0, 0.5 / 3.0));\n          vec4 v2 = texture(cc_realtimeJoint, vec2( x / 256.0, 1.5 / 3.0));\n          vec4 v3 = texture(cc_realtimeJoint, vec2( x / 256.0, 2.5 / 3.0));\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #else\n        mat4 getJointMatrix (float i) {\n         float x = 4.0 * i;\n          vec4 v1 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 0.5 / 3.0)))\n          );\n          vec4 v2 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 1.5 / 3.0)))\n          );\n          vec4 v3 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 2.5 / 3.0)))\n          );\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #endif\n    #else\n      mat4 getJointMatrix (float i) {\n        int idx = int(i);\n        vec4 v1 = cc_joints[idx * 3];\n        vec4 v2 = cc_joints[idx * 3 + 1];\n        vec4 v3 = cc_joints[idx * 3 + 2];\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #endif\n  mat4 skinMatrix () {\n    vec4 joints = vec4(a_joints);\n    return getJointMatrix(joints.x) * a_weights.x\n         + getJointMatrix(joints.y) * a_weights.y\n         + getJointMatrix(joints.z) * a_weights.z\n         + getJointMatrix(joints.w) * a_weights.w;\n  }\n  void CCSkin (inout vec4 position) {\n    mat4 m = skinMatrix();\n    position = m * position;\n  }\n  void CCSkin (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    mat4 m = skinMatrix();\n    position = m * position;\n    normal = (m * vec4(normal, 0.0)).xyz;\n    tangent.xyz = (m * vec4(tangent.xyz, 0.0)).xyz;\n  }\n#endif\nvoid CCVertInput(inout StandardVertInput In)\n{\n    In.position = vec4(a_position, 1.0);\n    In.normal = a_normal;\n    In.tangent = a_tangent;\n  #if CC_USE_MORPH\n    applyMorph(In.position, In.normal, In.tangent);\n  #endif\n  #if CC_USE_SKINNING\n    CCSkin(In.position, In.normal, In.tangent);\n  #endif\n}\nlayout(set = 0, binding = 0) uniform CCGlobal {\n  highp   vec4 cc_time;\n  mediump vec4 cc_screenSize;\n  mediump vec4 cc_nativeSize;\n  mediump vec4 cc_probeInfo;\n  mediump vec4 cc_debug_view_mode;\n};\nlayout(set = 0, binding = 1) uniform CCCamera {\n  highp   mat4 cc_matView;\n  highp   mat4 cc_matViewInv;\n  highp   mat4 cc_matProj;\n  highp   mat4 cc_matProjInv;\n  highp   mat4 cc_matViewProj;\n  highp   mat4 cc_matViewProjInv;\n  highp   vec4 cc_cameraPos;\n  mediump vec4 cc_surfaceTransform;\n  mediump vec4 cc_screenScale;\n  mediump vec4 cc_exposure;\n  mediump vec4 cc_mainLitDir;\n  mediump vec4 cc_mainLitColor;\n  mediump vec4 cc_ambientSky;\n  mediump vec4 cc_ambientGround;\n  mediump vec4 cc_fogColor;\n  mediump vec4 cc_fogBase;\n  mediump vec4 cc_fogAdd;\n  mediump vec4 cc_nearFar;\n  mediump vec4 cc_viewPort;\n};\n#if !USE_INSTANCING\n  layout(set = 2, binding = 0) uniform CCLocal {\n    highp mat4 cc_matWorld;\n    highp mat4 cc_matWorldIT;\n    highp vec4 cc_lightingMapUVParam;\n    highp vec4 cc_localShadowBias;\n    highp vec4 cc_reflectionProbeData1;\n    highp vec4 cc_reflectionProbeData2;\n    highp vec4 cc_reflectionProbeBlendData1;\n    highp vec4 cc_reflectionProbeBlendData2;\n  };\n#endif\nvoid CCGetWorldMatrixFull(out mat4 matWorld, out mat4 matWorldIT)\n{\n  #if USE_INSTANCING\n    matWorld = mat4(\n      vec4(a_matWorld0.xyz, 0.0),\n      vec4(a_matWorld1.xyz, 0.0),\n      vec4(a_matWorld2.xyz, 0.0),\n      vec4(a_matWorld0.w, a_matWorld1.w, a_matWorld2.w, 1.0)\n    );\n    vec3 scale = 1.0 / vec3(length(a_matWorld0.xyz), length(a_matWorld1.xyz), length(a_matWorld2.xyz));\n    vec3 scale2 = scale * scale;\n    matWorldIT = mat4(\n      vec4(a_matWorld0.xyz * scale2.x, 0.0),\n      vec4(a_matWorld1.xyz * scale2.y, 0.0),\n      vec4(a_matWorld2.xyz * scale2.z, 0.0),\n      vec4(0.0, 0.0, 0.0, 1.0)\n    );\n  #else\n    matWorld = cc_matWorld;\n    matWorldIT = cc_matWorldIT;\n  #endif\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\n#if !CC_USE_ACCURATE_FOG\nlayout(location = 0) out mediump float v_fog_factor;\n#endif\nvoid CC_TRANSFER_FOG(vec4 pos) {\n#if !CC_USE_ACCURATE_FOG\n    CC_TRANSFER_FOG_BASE(pos, v_fog_factor);\n#endif\n}\nlayout(location = 1) out highp vec4 v_shadowPos;\nlayout(set = 0, binding = 2) uniform CCShadow {\n  highp mat4 cc_matLightView;\n  highp mat4 cc_matLightViewProj;\n  highp vec4 cc_shadowInvProjDepthInfo;\n  highp vec4 cc_shadowProjDepthInfo;\n  highp vec4 cc_shadowProjInfo;\n  mediump vec4 cc_shadowNFLSInfo;\n  mediump vec4 cc_shadowWHPBInfo;\n  mediump vec4 cc_shadowLPNNInfo;\n  lowp vec4 cc_shadowColor;\n  mediump vec4 cc_planarNDInfo;\n};\n#if CC_SUPPORT_CASCADED_SHADOW_MAP\n  layout(set = 0, binding = 3) uniform CCCSM {\n    highp vec4 cc_csmViewDir0[4];\n    highp vec4 cc_csmViewDir1[4];\n    highp vec4 cc_csmViewDir2[4];\n    highp vec4 cc_csmAtlas[4];\n    highp mat4 cc_matCSMViewProj[4];\n    highp vec4 cc_csmProjDepthInfo[4];\n    highp vec4 cc_csmProjInfo[4];\n    highp vec4 cc_csmSplitsInfo;\n  };\n#endif\n#if defined(CC_USE_METAL) || defined(CC_USE_WGPU)\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y) y = -y\n#else\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y)\n#endif\n#if CC_RECEIVE_SHADOW\n  layout(set = 0, binding = 4) uniform highp sampler2D cc_shadowMap;\n  layout(set = 0, binding = 6) uniform highp sampler2D cc_spotShadowMap;\n    #define UnpackBitFromFloat(value, bit) (mod(floor(value / pow(10.0, float(bit))), 10.0) > 0.0)\n  #if CC_SUPPORT_CASCADED_SHADOW_MAP\n  #else\n  #endif\n#endif\n#if CC_RECEIVE_SHADOW\n#endif\nlayout(location = 17) in vec4 a_color;\n#if HAS_SECOND_UV\n  layout(location = 18) in vec2 a_texCoord1;\n#endif\nlayout(location = 2) out vec3 v_position;\nlayout(location = 3) out vec3 v_normal;\nlayout(location = 4) out vec3 v_tangent;\nlayout(location = 5) out vec3 v_bitangent;\nlayout(location = 6) out vec2 v_uv;\nlayout(location = 7) out vec2 v_uv1;\nlayout(location = 8) out vec4 v_color;\nvec4 vert () {\n  StandardVertInput In;\n  CCVertInput(In);\n  mat4 matWorld, matWorldIT;\n  CCGetWorldMatrixFull(matWorld, matWorldIT);\n  vec4 pos = matWorld * In.position;\n  v_position = pos.xyz;\n  v_normal = normalize((matWorldIT * vec4(In.normal, 0.0)).xyz);\n  v_tangent = normalize((matWorld * vec4(In.tangent.xyz, 0.0)).xyz);\n  v_bitangent = cross(v_normal, v_tangent) * In.tangent.w;\n  v_uv = a_texCoord;\n  #if HAS_SECOND_UV\n    v_uv1 = a_texCoord1;\n  #endif\n  v_color = a_color;\n  CC_TRANSFER_FOG(pos);\n  v_shadowPos = cc_matLightViewProj * pos;\n  return cc_matProj * (cc_matView * matWorld) * In.position;\n}\nvoid main() { gl_Position = vert(); }",
        "frag": "\nprecision highp float;\nlayout(set = 0, binding = 0) uniform CCGlobal {\n  highp   vec4 cc_time;\n  mediump vec4 cc_screenSize;\n  mediump vec4 cc_nativeSize;\n  mediump vec4 cc_probeInfo;\n  mediump vec4 cc_debug_view_mode;\n};\nlayout(set = 0, binding = 1) uniform CCCamera {\n  highp   mat4 cc_matView;\n  highp   mat4 cc_matViewInv;\n  highp   mat4 cc_matProj;\n  highp   mat4 cc_matProjInv;\n  highp   mat4 cc_matViewProj;\n  highp   mat4 cc_matViewProjInv;\n  highp   vec4 cc_cameraPos;\n  mediump vec4 cc_surfaceTransform;\n  mediump vec4 cc_screenScale;\n  mediump vec4 cc_exposure;\n  mediump vec4 cc_mainLitDir;\n  mediump vec4 cc_mainLitColor;\n  mediump vec4 cc_ambientSky;\n  mediump vec4 cc_ambientGround;\n  mediump vec4 cc_fogColor;\n  mediump vec4 cc_fogBase;\n  mediump vec4 cc_fogAdd;\n  mediump vec4 cc_nearFar;\n  mediump vec4 cc_viewPort;\n};\nvec4 CCFragOutput (vec4 color) {\n  return color;\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\nvoid CC_APPLY_FOG_BASE(inout vec4 color, float factor) {\n\tcolor = vec4(mix(cc_fogColor.rgb, color.rgb, factor), color.a);\n}\n#if !CC_USE_ACCURATE_FOG\nlayout(location = 0) in mediump float v_fog_factor;\n#endif\nvoid CC_APPLY_FOG(inout vec4 color) {\n#if !CC_USE_ACCURATE_FOG\n    CC_APPLY_FOG_BASE(color, v_fog_factor);\n#endif\n}\nvoid CC_APPLY_FOG(inout vec4 color, vec3 worldPos) {\n#if CC_USE_ACCURATE_FOG\n    float factor;\n    CC_TRANSFER_FOG_BASE(vec4(worldPos, 1.0), factor);\n#else\n    float factor = v_fog_factor;\n#endif\n    CC_APPLY_FOG_BASE(color, factor);\n}\nlayout(location = 6) in vec2 v_uv;\nlayout(location = 2) in vec3 v_position;\nlayout(set = 1, binding = 1) uniform sampler2D mainTexture;\nlayout(set = 1, binding = 0) uniform Constant {\n  vec4 mainColor;\n};\nvec4 frag () {\n  vec4 col = mainColor * texture(mainTexture, v_uv);\n  CC_APPLY_FOG(col, v_position);\n  return CCFragOutput(col);\n}\nlayout(location = 0) out vec4 cc_FragColor;\nvoid main() { cc_FragColor = frag(); }"
      },
      "glsl3": {
        "vert": "\nprecision highp float;\n#define QUATER_PI         0.78539816340\n#define HALF_PI           1.57079632679\n#define PI                3.14159265359\n#define PI2               6.28318530718\n#define PI4               12.5663706144\n#define INV_QUATER_PI     1.27323954474\n#define INV_HALF_PI       0.63661977237\n#define INV_PI            0.31830988618\n#define INV_PI2           0.15915494309\n#define INV_PI4           0.07957747155\n#define EPSILON           1e-6\n#define EPSILON_LOWP      1e-4\n#define LOG2              1.442695\n#define EXP_VALUE         2.71828183\n#define FP_MAX            65504.0\n#define FP_SCALE          0.0009765625\n#define FP_SCALE_INV      1024.0\n#define GRAY_VECTOR       vec3(0.299, 0.587, 0.114)\n#define LIGHT_MAP_TYPE_DISABLED 0\n#define LIGHT_MAP_TYPE_ALL_IN_ONE 1\n#define LIGHT_MAP_TYPE_INDIRECT_OCCLUSION 2\n#define REFLECTION_PROBE_TYPE_NONE 0\n#define REFLECTION_PROBE_TYPE_CUBE 1\n#define REFLECTION_PROBE_TYPE_PLANAR 2\n#define REFLECTION_PROBE_TYPE_BLEND 3\n#define REFLECTION_PROBE_TYPE_BLEND_AND_SKYBOX 4\n#define LIGHT_TYPE_DIRECTIONAL 0.0\n#define LIGHT_TYPE_SPHERE 1.0\n#define LIGHT_TYPE_SPOT 2.0\n#define LIGHT_TYPE_POINT 3.0\n#define LIGHT_TYPE_RANGED_DIRECTIONAL 4.0\n#define IS_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_DIRECTIONAL)) < EPSILON_LOWP)\n#define IS_SPHERE_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPHERE)) < EPSILON_LOWP)\n#define IS_SPOT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPOT)) < EPSILON_LOWP)\n#define IS_POINT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_POINT)) < EPSILON_LOWP)\n#define IS_RANGED_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_RANGED_DIRECTIONAL)) < EPSILON_LOWP)\n#define TONE_MAPPING_ACES 0\n#define TONE_MAPPING_LINEAR 1\n#define SURFACES_MAX_TRANSMIT_DEPTH_VALUE 999999.0\n#ifndef CC_SURFACES_DEBUG_VIEW_SINGLE\n  #define CC_SURFACES_DEBUG_VIEW_SINGLE 1\n#endif\n#ifndef CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC\n  #define CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC 2\n#endif\nstruct StandardVertInput {\n  highp vec4 position;\n  vec3 normal;\n  vec4 tangent;\n};\nin vec3 a_position;\nin vec3 a_normal;\nin vec2 a_texCoord;\nin vec4 a_tangent;\n#if CC_USE_SKINNING\n    in vec4 a_joints;\n  in vec4 a_weights;\n#endif\n#if USE_INSTANCING\n  #if CC_USE_BAKED_ANIMATION\n    in highp vec4 a_jointAnimInfo;\n  #endif\n  in vec4 a_matWorld0;\n  in vec4 a_matWorld1;\n  in vec4 a_matWorld2;\n  #if CC_USE_LIGHTMAP\n    in vec4 a_lightingMapUVParam;\n  #endif\n  #if CC_USE_REFLECTION_PROBE || CC_RECEIVE_SHADOW\n    #if CC_RECEIVE_SHADOW\n    #endif\n    in vec4 a_localShadowBiasAndProbeId;\n  #endif\n  #if CC_USE_REFLECTION_PROBE\n    in vec4 a_reflectionProbeData;\n  #endif\n  #if CC_USE_LIGHT_PROBE\n    in vec4 a_sh_linear_const_r;\n    in vec4 a_sh_linear_const_g;\n    in vec4 a_sh_linear_const_b;\n  #endif\n#endif\n#if CC_USE_MORPH\n    in float a_vertexId;\n    int getVertexId() {\n      return int(a_vertexId);\n    }\n#endif\nhighp float decode32 (highp vec4 rgba) {\n  rgba = rgba * 255.0;\n  highp float Sign = 1.0 - (step(128.0, (rgba[3]) + 0.5)) * 2.0;\n  highp float Exponent = 2.0 * (mod(float(int((rgba[3]) + 0.5)), 128.0)) + (step(128.0, (rgba[2]) + 0.5)) - 127.0;\n  highp float Mantissa = (mod(float(int((rgba[2]) + 0.5)), 128.0)) * 65536.0 + rgba[1] * 256.0 + rgba[0] + 8388608.0;\n  return Sign * exp2(Exponent - 23.0) * Mantissa;\n}\n#if CC_USE_MORPH\n  layout(std140) uniform CCMorph {\n    vec4 cc_displacementWeights[15];\n    vec4 cc_displacementTextureInfo;\n  };\n  #if CC_MORPH_TARGET_HAS_POSITION\n    uniform sampler2D cc_PositionDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    uniform sampler2D cc_NormalDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    uniform sampler2D cc_TangentDisplacements;\n  #endif\n  vec2 getPixelLocation(vec2 textureResolution, int pixelIndex) {\n    float pixelIndexF = float(pixelIndex);\n    float x = mod(pixelIndexF, textureResolution.x);\n    float y = floor(pixelIndexF / textureResolution.x);\n    return vec2(x, y);\n  }\n  vec2 getPixelCoordFromLocation(vec2 location, vec2 textureResolution) {\n    return (vec2(location.x, location.y) + .5) / textureResolution;\n  }\n  #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      vec4 fetchVec3ArrayFromTexture(sampler2D tex, int pixelIndex) {\n        ivec2 texSize = textureSize(tex, 0);\n        return texelFetch(tex, ivec2(pixelIndex % texSize.x, pixelIndex / texSize.x), 0);\n      }\n  #else\n    vec4 fetchVec3ArrayFromTexture(sampler2D tex, int elementIndex) {\n      int pixelIndex = elementIndex * 4;\n      vec2 location = getPixelLocation(cc_displacementTextureInfo.xy, pixelIndex);\n      vec2 x = getPixelCoordFromLocation(location + vec2(0.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 y = getPixelCoordFromLocation(location + vec2(1.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 z = getPixelCoordFromLocation(location + vec2(2.0, 0.0), cc_displacementTextureInfo.xy);\n      return vec4(\n        decode32(texture(tex, x)),\n        decode32(texture(tex, y)),\n        decode32(texture(tex, z)),\n        1.0\n      );\n    }\n  #endif\n  float getDisplacementWeight(int index) {\n    int quot = index / 4;\n    int remainder = index - quot * 4;\n    if (remainder == 0) {\n      return cc_displacementWeights[quot].x;\n    } else if (remainder == 1) {\n      return cc_displacementWeights[quot].y;\n    } else if (remainder == 2) {\n      return cc_displacementWeights[quot].z;\n    } else {\n      return cc_displacementWeights[quot].w;\n    }\n  }\n  vec3 getVec3DisplacementFromTexture(sampler2D tex, int vertexIndex) {\n  #if CC_MORPH_PRECOMPUTED\n    return fetchVec3ArrayFromTexture(tex, vertexIndex).rgb;\n  #else\n    vec3 result = vec3(0, 0, 0);\n    int nVertices = int(cc_displacementTextureInfo.z);\n    for (int iTarget = 0; iTarget < CC_MORPH_TARGET_COUNT; ++iTarget) {\n      result += (fetchVec3ArrayFromTexture(tex, nVertices * iTarget + vertexIndex).rgb * getDisplacementWeight(iTarget));\n    }\n    return result;\n  #endif\n  }\n  #if CC_MORPH_TARGET_HAS_POSITION\n  vec3 getPositionDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_PositionDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n  vec3 getNormalDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_NormalDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n  vec3 getTangentDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_TangentDisplacements, vertexId);\n  }\n  #endif\n  void applyMorph (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    int vertexId = getVertexId();\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    normal.xyz = normal.xyz + getNormalDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    tangent.xyz = tangent.xyz + getTangentDisplacement(vertexId);\n  #endif\n  }\n  void applyMorph (inout vec4 position) {\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(getVertexId());\n  #endif\n  }\n#endif\n#if CC_USE_SKINNING\n  #if CC_USE_BAKED_ANIMATION\n    layout(std140) uniform CCSkinningTexture {\n      highp vec4 cc_jointTextureInfo;\n    };\n    layout(std140) uniform CCSkinningAnimation {\n      highp vec4 cc_jointAnimInfo;\n    };\n    uniform highp sampler2D cc_jointTexture;\n    void CCGetJointTextureCoords(float pixelsPerJoint, float jointIdx, out highp float x, out highp float y, out highp float invSize)\n    {\n      #if USE_INSTANCING\n        highp float temp = pixelsPerJoint * (a_jointAnimInfo.x * a_jointAnimInfo.y + jointIdx) + a_jointAnimInfo.z;\n      #else\n        highp float temp = pixelsPerJoint * (cc_jointAnimInfo.x * cc_jointTextureInfo.y + jointIdx) + cc_jointTextureInfo.z;\n      #endif\n      invSize = cc_jointTextureInfo.w;\n      highp float tempY = floor(temp * invSize);\n      x = floor(temp - tempY * cc_jointTextureInfo.x);\n      y = (tempY + 0.5) * invSize;\n    }\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      uniform highp sampler2D cc_realtimeJoint;\n    #else\n      layout(std140) uniform CCSkinning {\n        highp vec4 cc_joints[CC_JOINT_UNIFORM_CAPACITY * 3];\n      };\n    #endif\n  #endif\n  #if CC_USE_BAKED_ANIMATION\n    #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(3.0, i, x, y, invSize);\n        vec4 v1 = texture(cc_jointTexture, vec2((x + 0.5) * invSize, y));\n        vec4 v2 = texture(cc_jointTexture, vec2((x + 1.5) * invSize, y));\n        vec4 v3 = texture(cc_jointTexture, vec2((x + 2.5) * invSize, y));\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #else\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(12.0, i, x, y, invSize);\n        vec4 v1 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 0.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 1.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 2.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 3.5) * invSize, y)))\n        );\n        vec4 v2 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 4.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 5.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 6.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 7.5) * invSize, y)))\n        );\n        vec4 v3 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 8.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 9.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 10.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 11.5) * invSize, y)))\n        );\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n        mat4 getJointMatrix (float i) {\n          float x = i;\n          vec4 v1 = texture(cc_realtimeJoint, vec2( x / 256.0, 0.5 / 3.0));\n          vec4 v2 = texture(cc_realtimeJoint, vec2( x / 256.0, 1.5 / 3.0));\n          vec4 v3 = texture(cc_realtimeJoint, vec2( x / 256.0, 2.5 / 3.0));\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #else\n        mat4 getJointMatrix (float i) {\n         float x = 4.0 * i;\n          vec4 v1 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 0.5 / 3.0)))\n          );\n          vec4 v2 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 1.5 / 3.0)))\n          );\n          vec4 v3 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 2.5 / 3.0)))\n          );\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #endif\n    #else\n      mat4 getJointMatrix (float i) {\n        int idx = int(i);\n        vec4 v1 = cc_joints[idx * 3];\n        vec4 v2 = cc_joints[idx * 3 + 1];\n        vec4 v3 = cc_joints[idx * 3 + 2];\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #endif\n  mat4 skinMatrix () {\n    vec4 joints = vec4(a_joints);\n    return getJointMatrix(joints.x) * a_weights.x\n         + getJointMatrix(joints.y) * a_weights.y\n         + getJointMatrix(joints.z) * a_weights.z\n         + getJointMatrix(joints.w) * a_weights.w;\n  }\n  void CCSkin (inout vec4 position) {\n    mat4 m = skinMatrix();\n    position = m * position;\n  }\n  void CCSkin (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    mat4 m = skinMatrix();\n    position = m * position;\n    normal = (m * vec4(normal, 0.0)).xyz;\n    tangent.xyz = (m * vec4(tangent.xyz, 0.0)).xyz;\n  }\n#endif\nvoid CCVertInput(inout StandardVertInput In)\n{\n    In.position = vec4(a_position, 1.0);\n    In.normal = a_normal;\n    In.tangent = a_tangent;\n  #if CC_USE_MORPH\n    applyMorph(In.position, In.normal, In.tangent);\n  #endif\n  #if CC_USE_SKINNING\n    CCSkin(In.position, In.normal, In.tangent);\n  #endif\n}\nlayout(std140) uniform CCGlobal {\n  highp   vec4 cc_time;\n  mediump vec4 cc_screenSize;\n  mediump vec4 cc_nativeSize;\n  mediump vec4 cc_probeInfo;\n  mediump vec4 cc_debug_view_mode;\n};\nlayout(std140) uniform CCCamera {\n  highp   mat4 cc_matView;\n  highp   mat4 cc_matViewInv;\n  highp   mat4 cc_matProj;\n  highp   mat4 cc_matProjInv;\n  highp   mat4 cc_matViewProj;\n  highp   mat4 cc_matViewProjInv;\n  highp   vec4 cc_cameraPos;\n  mediump vec4 cc_surfaceTransform;\n  mediump vec4 cc_screenScale;\n  mediump vec4 cc_exposure;\n  mediump vec4 cc_mainLitDir;\n  mediump vec4 cc_mainLitColor;\n  mediump vec4 cc_ambientSky;\n  mediump vec4 cc_ambientGround;\n  mediump vec4 cc_fogColor;\n  mediump vec4 cc_fogBase;\n  mediump vec4 cc_fogAdd;\n  mediump vec4 cc_nearFar;\n  mediump vec4 cc_viewPort;\n};\n#if !USE_INSTANCING\n  layout(std140) uniform CCLocal {\n    highp mat4 cc_matWorld;\n    highp mat4 cc_matWorldIT;\n    highp vec4 cc_lightingMapUVParam;\n    highp vec4 cc_localShadowBias;\n    highp vec4 cc_reflectionProbeData1;\n    highp vec4 cc_reflectionProbeData2;\n    highp vec4 cc_reflectionProbeBlendData1;\n    highp vec4 cc_reflectionProbeBlendData2;\n  };\n#endif\nvoid CCGetWorldMatrixFull(out mat4 matWorld, out mat4 matWorldIT)\n{\n  #if USE_INSTANCING\n    matWorld = mat4(\n      vec4(a_matWorld0.xyz, 0.0),\n      vec4(a_matWorld1.xyz, 0.0),\n      vec4(a_matWorld2.xyz, 0.0),\n      vec4(a_matWorld0.w, a_matWorld1.w, a_matWorld2.w, 1.0)\n    );\n    vec3 scale = 1.0 / vec3(length(a_matWorld0.xyz), length(a_matWorld1.xyz), length(a_matWorld2.xyz));\n    vec3 scale2 = scale * scale;\n    matWorldIT = mat4(\n      vec4(a_matWorld0.xyz * scale2.x, 0.0),\n      vec4(a_matWorld1.xyz * scale2.y, 0.0),\n      vec4(a_matWorld2.xyz * scale2.z, 0.0),\n      vec4(0.0, 0.0, 0.0, 1.0)\n    );\n  #else\n    matWorld = cc_matWorld;\n    matWorldIT = cc_matWorldIT;\n  #endif\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\n#if !CC_USE_ACCURATE_FOG\nout mediump float v_fog_factor;\n#endif\nvoid CC_TRANSFER_FOG(vec4 pos) {\n#if !CC_USE_ACCURATE_FOG\n    CC_TRANSFER_FOG_BASE(pos, v_fog_factor);\n#endif\n}\nout highp vec4 v_shadowPos;\nlayout(std140) uniform CCShadow {\n  highp mat4 cc_matLightView;\n  highp mat4 cc_matLightViewProj;\n  highp vec4 cc_shadowInvProjDepthInfo;\n  highp vec4 cc_shadowProjDepthInfo;\n  highp vec4 cc_shadowProjInfo;\n  mediump vec4 cc_shadowNFLSInfo;\n  mediump vec4 cc_shadowWHPBInfo;\n  mediump vec4 cc_shadowLPNNInfo;\n  lowp vec4 cc_shadowColor;\n  mediump vec4 cc_planarNDInfo;\n};\n#if CC_SUPPORT_CASCADED_SHADOW_MAP\n  layout(std140) uniform CCCSM {\n    highp vec4 cc_csmViewDir0[4];\n    highp vec4 cc_csmViewDir1[4];\n    highp vec4 cc_csmViewDir2[4];\n    highp vec4 cc_csmAtlas[4];\n    highp mat4 cc_matCSMViewProj[4];\n    highp vec4 cc_csmProjDepthInfo[4];\n    highp vec4 cc_csmProjInfo[4];\n    highp vec4 cc_csmSplitsInfo;\n  };\n#endif\n#if defined(CC_USE_METAL) || defined(CC_USE_WGPU)\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y) y = -y\n#else\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y)\n#endif\n#if CC_RECEIVE_SHADOW\n  uniform highp sampler2D cc_shadowMap;\n  uniform highp sampler2D cc_spotShadowMap;\n    #define UnpackBitFromFloat(value, bit) (mod(floor(value / pow(10.0, float(bit))), 10.0) > 0.0)\n  #if CC_SUPPORT_CASCADED_SHADOW_MAP\n  #else\n  #endif\n#endif\n#if CC_RECEIVE_SHADOW\n#endif\nin vec4 a_color;\n#if HAS_SECOND_UV\n  in vec2 a_texCoord1;\n#endif\nout vec3 v_position;\nout vec3 v_normal;\nout vec3 v_tangent;\nout vec3 v_bitangent;\nout vec2 v_uv;\nout vec2 v_uv1;\nout vec4 v_color;\nvec4 vert () {\n  StandardVertInput In;\n  CCVertInput(In);\n  mat4 matWorld, matWorldIT;\n  CCGetWorldMatrixFull(matWorld, matWorldIT);\n  vec4 pos = matWorld * In.position;\n  v_position = pos.xyz;\n  v_normal = normalize((matWorldIT * vec4(In.normal, 0.0)).xyz);\n  v_tangent = normalize((matWorld * vec4(In.tangent.xyz, 0.0)).xyz);\n  v_bitangent = cross(v_normal, v_tangent) * In.tangent.w;\n  v_uv = a_texCoord;\n  #if HAS_SECOND_UV\n    v_uv1 = a_texCoord1;\n  #endif\n  v_color = a_color;\n  CC_TRANSFER_FOG(pos);\n  v_shadowPos = cc_matLightViewProj * pos;\n  return cc_matProj * (cc_matView * matWorld) * In.position;\n}\nvoid main() { gl_Position = vert(); }",
        "frag": "\nprecision highp float;\nlayout(std140) uniform CCGlobal {\n  highp   vec4 cc_time;\n  mediump vec4 cc_screenSize;\n  mediump vec4 cc_nativeSize;\n  mediump vec4 cc_probeInfo;\n  mediump vec4 cc_debug_view_mode;\n};\nlayout(std140) uniform CCCamera {\n  highp   mat4 cc_matView;\n  highp   mat4 cc_matViewInv;\n  highp   mat4 cc_matProj;\n  highp   mat4 cc_matProjInv;\n  highp   mat4 cc_matViewProj;\n  highp   mat4 cc_matViewProjInv;\n  highp   vec4 cc_cameraPos;\n  mediump vec4 cc_surfaceTransform;\n  mediump vec4 cc_screenScale;\n  mediump vec4 cc_exposure;\n  mediump vec4 cc_mainLitDir;\n  mediump vec4 cc_mainLitColor;\n  mediump vec4 cc_ambientSky;\n  mediump vec4 cc_ambientGround;\n  mediump vec4 cc_fogColor;\n  mediump vec4 cc_fogBase;\n  mediump vec4 cc_fogAdd;\n  mediump vec4 cc_nearFar;\n  mediump vec4 cc_viewPort;\n};\nvec4 CCFragOutput (vec4 color) {\n  return color;\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\nvoid CC_APPLY_FOG_BASE(inout vec4 color, float factor) {\n\tcolor = vec4(mix(cc_fogColor.rgb, color.rgb, factor), color.a);\n}\n#if !CC_USE_ACCURATE_FOG\nin mediump float v_fog_factor;\n#endif\nvoid CC_APPLY_FOG(inout vec4 color) {\n#if !CC_USE_ACCURATE_FOG\n    CC_APPLY_FOG_BASE(color, v_fog_factor);\n#endif\n}\nvoid CC_APPLY_FOG(inout vec4 color, vec3 worldPos) {\n#if CC_USE_ACCURATE_FOG\n    float factor;\n    CC_TRANSFER_FOG_BASE(vec4(worldPos, 1.0), factor);\n#else\n    float factor = v_fog_factor;\n#endif\n    CC_APPLY_FOG_BASE(color, factor);\n}\nin vec2 v_uv;\nin vec3 v_position;\nuniform sampler2D mainTexture;\nlayout(std140) uniform Constant {\n  vec4 mainColor;\n};\nvec4 frag () {\n  vec4 col = mainColor * texture(mainTexture, v_uv);\n  CC_APPLY_FOG(col, v_position);\n  return CCFragOutput(col);\n}\nlayout(location = 0) out vec4 cc_FragColor;\nvoid main() { cc_FragColor = frag(); }"
      },
      "glsl1": {
        "vert": "\n#ifdef GL_EXT_shader_texture_lod\n#extension GL_EXT_shader_texture_lod: enable\n#endif\nprecision highp float;\n#define QUATER_PI         0.78539816340\n#define HALF_PI           1.57079632679\n#define PI                3.14159265359\n#define PI2               6.28318530718\n#define PI4               12.5663706144\n#define INV_QUATER_PI     1.27323954474\n#define INV_HALF_PI       0.63661977237\n#define INV_PI            0.31830988618\n#define INV_PI2           0.15915494309\n#define INV_PI4           0.07957747155\n#define EPSILON           1e-6\n#define EPSILON_LOWP      1e-4\n#define LOG2              1.442695\n#define EXP_VALUE         2.71828183\n#define FP_MAX            65504.0\n#define FP_SCALE          0.0009765625\n#define FP_SCALE_INV      1024.0\n#define GRAY_VECTOR       vec3(0.299, 0.587, 0.114)\n#define LIGHT_MAP_TYPE_DISABLED 0\n#define LIGHT_MAP_TYPE_ALL_IN_ONE 1\n#define LIGHT_MAP_TYPE_INDIRECT_OCCLUSION 2\n#define REFLECTION_PROBE_TYPE_NONE 0\n#define REFLECTION_PROBE_TYPE_CUBE 1\n#define REFLECTION_PROBE_TYPE_PLANAR 2\n#define REFLECTION_PROBE_TYPE_BLEND 3\n#define REFLECTION_PROBE_TYPE_BLEND_AND_SKYBOX 4\n#define LIGHT_TYPE_DIRECTIONAL 0.0\n#define LIGHT_TYPE_SPHERE 1.0\n#define LIGHT_TYPE_SPOT 2.0\n#define LIGHT_TYPE_POINT 3.0\n#define LIGHT_TYPE_RANGED_DIRECTIONAL 4.0\n#define IS_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_DIRECTIONAL)) < EPSILON_LOWP)\n#define IS_SPHERE_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPHERE)) < EPSILON_LOWP)\n#define IS_SPOT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPOT)) < EPSILON_LOWP)\n#define IS_POINT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_POINT)) < EPSILON_LOWP)\n#define IS_RANGED_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_RANGED_DIRECTIONAL)) < EPSILON_LOWP)\n#define TONE_MAPPING_ACES 0\n#define TONE_MAPPING_LINEAR 1\n#define SURFACES_MAX_TRANSMIT_DEPTH_VALUE 999999.0\n#ifndef CC_SURFACES_DEBUG_VIEW_SINGLE\n  #define CC_SURFACES_DEBUG_VIEW_SINGLE 1\n#endif\n#ifndef CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC\n  #define CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC 2\n#endif\nstruct StandardVertInput {\n  highp vec4 position;\n  vec3 normal;\n  vec4 tangent;\n};\nattribute vec3 a_position;\nattribute vec3 a_normal;\nattribute vec2 a_texCoord;\nattribute vec4 a_tangent;\n#if CC_USE_SKINNING\n    attribute vec4 a_joints;\n  attribute vec4 a_weights;\n#endif\n#if USE_INSTANCING\n  #if CC_USE_BAKED_ANIMATION\n    attribute highp vec4 a_jointAnimInfo;\n  #endif\n  attribute vec4 a_matWorld0;\n  attribute vec4 a_matWorld1;\n  attribute vec4 a_matWorld2;\n  #if CC_USE_LIGHTMAP\n    attribute vec4 a_lightingMapUVParam;\n  #endif\n  #if CC_USE_REFLECTION_PROBE || CC_RECEIVE_SHADOW\n    #if CC_RECEIVE_SHADOW\n    #endif\n    attribute vec4 a_localShadowBiasAndProbeId;\n  #endif\n  #if CC_USE_REFLECTION_PROBE\n    attribute vec4 a_reflectionProbeData;\n  #endif\n  #if CC_USE_LIGHT_PROBE\n    attribute vec4 a_sh_linear_const_r;\n    attribute vec4 a_sh_linear_const_g;\n    attribute vec4 a_sh_linear_const_b;\n  #endif\n#endif\n#if CC_USE_MORPH\n    attribute float a_vertexId;\n    int getVertexId() {\n      return int(a_vertexId);\n    }\n#endif\nhighp float decode32 (highp vec4 rgba) {\n  rgba = rgba * 255.0;\n  highp float Sign = 1.0 - (step(128.0, (rgba[3]) + 0.5)) * 2.0;\n  highp float Exponent = 2.0 * (mod(float(int((rgba[3]) + 0.5)), 128.0)) + (step(128.0, (rgba[2]) + 0.5)) - 127.0;\n  highp float Mantissa = (mod(float(int((rgba[2]) + 0.5)), 128.0)) * 65536.0 + rgba[1] * 256.0 + rgba[0] + 8388608.0;\n  return Sign * exp2(Exponent - 23.0) * Mantissa;\n}\n#if CC_USE_MORPH\n  uniform vec4 cc_displacementWeights[15];\n  uniform vec4 cc_displacementTextureInfo;\n  #if CC_MORPH_TARGET_HAS_POSITION\n    uniform sampler2D cc_PositionDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    uniform sampler2D cc_NormalDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    uniform sampler2D cc_TangentDisplacements;\n  #endif\n  vec2 getPixelLocation(vec2 textureResolution, int pixelIndex) {\n    float pixelIndexF = float(pixelIndex);\n    float x = mod(pixelIndexF, textureResolution.x);\n    float y = floor(pixelIndexF / textureResolution.x);\n    return vec2(x, y);\n  }\n  vec2 getPixelCoordFromLocation(vec2 location, vec2 textureResolution) {\n    return (vec2(location.x, location.y) + .5) / textureResolution;\n  }\n  #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      vec4 fetchVec3ArrayFromTexture(sampler2D tex, int elementIndex) {\n        int pixelIndex = elementIndex;\n        vec2 location = getPixelLocation(cc_displacementTextureInfo.xy, pixelIndex);\n        vec2 uv = getPixelCoordFromLocation(location, cc_displacementTextureInfo.xy);\n        return texture2D(tex, uv);\n      }\n  #else\n    vec4 fetchVec3ArrayFromTexture(sampler2D tex, int elementIndex) {\n      int pixelIndex = elementIndex * 4;\n      vec2 location = getPixelLocation(cc_displacementTextureInfo.xy, pixelIndex);\n      vec2 x = getPixelCoordFromLocation(location + vec2(0.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 y = getPixelCoordFromLocation(location + vec2(1.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 z = getPixelCoordFromLocation(location + vec2(2.0, 0.0), cc_displacementTextureInfo.xy);\n      return vec4(\n        decode32(texture2D(tex, x)),\n        decode32(texture2D(tex, y)),\n        decode32(texture2D(tex, z)),\n        1.0\n      );\n    }\n  #endif\n  float getDisplacementWeight(int index) {\n    int quot = index / 4;\n    int remainder = index - quot * 4;\n    if (remainder == 0) {\n      return cc_displacementWeights[quot].x;\n    } else if (remainder == 1) {\n      return cc_displacementWeights[quot].y;\n    } else if (remainder == 2) {\n      return cc_displacementWeights[quot].z;\n    } else {\n      return cc_displacementWeights[quot].w;\n    }\n  }\n  vec3 getVec3DisplacementFromTexture(sampler2D tex, int vertexIndex) {\n  #if CC_MORPH_PRECOMPUTED\n    return fetchVec3ArrayFromTexture(tex, vertexIndex).rgb;\n  #else\n    vec3 result = vec3(0, 0, 0);\n    int nVertices = int(cc_displacementTextureInfo.z);\n    for (int iTarget = 0; iTarget < CC_MORPH_TARGET_COUNT; ++iTarget) {\n      result += (fetchVec3ArrayFromTexture(tex, nVertices * iTarget + vertexIndex).rgb * getDisplacementWeight(iTarget));\n    }\n    return result;\n  #endif\n  }\n  #if CC_MORPH_TARGET_HAS_POSITION\n  vec3 getPositionDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_PositionDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n  vec3 getNormalDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_NormalDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n  vec3 getTangentDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_TangentDisplacements, vertexId);\n  }\n  #endif\n  void applyMorph (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    int vertexId = getVertexId();\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    normal.xyz = normal.xyz + getNormalDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    tangent.xyz = tangent.xyz + getTangentDisplacement(vertexId);\n  #endif\n  }\n  void applyMorph (inout vec4 position) {\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(getVertexId());\n  #endif\n  }\n#endif\n#if CC_USE_SKINNING\n  #if CC_USE_BAKED_ANIMATION\n    uniform highp vec4 cc_jointTextureInfo;\n    uniform highp vec4 cc_jointAnimInfo;\n    uniform highp sampler2D cc_jointTexture;\n    void CCGetJointTextureCoords(float pixelsPerJoint, float jointIdx, out highp float x, out highp float y, out highp float invSize)\n    {\n      #if USE_INSTANCING\n        highp float temp = pixelsPerJoint * (a_jointAnimInfo.x * a_jointAnimInfo.y + jointIdx) + a_jointAnimInfo.z;\n      #else\n        highp float temp = pixelsPerJoint * (cc_jointAnimInfo.x * cc_jointTextureInfo.y + jointIdx) + cc_jointTextureInfo.z;\n      #endif\n      invSize = cc_jointTextureInfo.w;\n      highp float tempY = floor(temp * invSize);\n      x = floor(temp - tempY * cc_jointTextureInfo.x);\n      y = (tempY + 0.5) * invSize;\n    }\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      uniform highp sampler2D cc_realtimeJoint;\n    #else\n      uniform highp vec4 cc_joints[CC_JOINT_UNIFORM_CAPACITY * 3];\n    #endif\n  #endif\n  #if CC_USE_BAKED_ANIMATION\n    #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(3.0, i, x, y, invSize);\n        vec4 v1 = texture2D(cc_jointTexture, vec2((x + 0.5) * invSize, y));\n        vec4 v2 = texture2D(cc_jointTexture, vec2((x + 1.5) * invSize, y));\n        vec4 v3 = texture2D(cc_jointTexture, vec2((x + 2.5) * invSize, y));\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #else\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(12.0, i, x, y, invSize);\n        vec4 v1 = vec4(\n          decode32(texture2D(cc_jointTexture, vec2((x + 0.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 1.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 2.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 3.5) * invSize, y)))\n        );\n        vec4 v2 = vec4(\n          decode32(texture2D(cc_jointTexture, vec2((x + 4.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 5.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 6.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 7.5) * invSize, y)))\n        );\n        vec4 v3 = vec4(\n          decode32(texture2D(cc_jointTexture, vec2((x + 8.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 9.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 10.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 11.5) * invSize, y)))\n        );\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n        mat4 getJointMatrix (float i) {\n          float x = i;\n          vec4 v1 = texture2D(cc_realtimeJoint, vec2( x / 256.0, 0.5 / 3.0));\n          vec4 v2 = texture2D(cc_realtimeJoint, vec2( x / 256.0, 1.5 / 3.0));\n          vec4 v3 = texture2D(cc_realtimeJoint, vec2( x / 256.0, 2.5 / 3.0));\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #else\n        mat4 getJointMatrix (float i) {\n         float x = 4.0 * i;\n          vec4 v1 = vec4(\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 0.5 / 3.0)))\n          );\n          vec4 v2 = vec4(\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 1.5 / 3.0)))\n          );\n          vec4 v3 = vec4(\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 2.5 / 3.0)))\n          );\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #endif\n    #else\n      mat4 getJointMatrix (float i) {\n        int idx = int(i);\n        vec4 v1 = cc_joints[idx * 3];\n        vec4 v2 = cc_joints[idx * 3 + 1];\n        vec4 v3 = cc_joints[idx * 3 + 2];\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #endif\n  mat4 skinMatrix () {\n    vec4 joints = vec4(a_joints);\n    return getJointMatrix(joints.x) * a_weights.x\n         + getJointMatrix(joints.y) * a_weights.y\n         + getJointMatrix(joints.z) * a_weights.z\n         + getJointMatrix(joints.w) * a_weights.w;\n  }\n  void CCSkin (inout vec4 position) {\n    mat4 m = skinMatrix();\n    position = m * position;\n  }\n  void CCSkin (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    mat4 m = skinMatrix();\n    position = m * position;\n    normal = (m * vec4(normal, 0.0)).xyz;\n    tangent.xyz = (m * vec4(tangent.xyz, 0.0)).xyz;\n  }\n#endif\nvoid CCVertInput(inout StandardVertInput In)\n{\n    In.position = vec4(a_position, 1.0);\n    In.normal = a_normal;\n    In.tangent = a_tangent;\n  #if CC_USE_MORPH\n    applyMorph(In.position, In.normal, In.tangent);\n  #endif\n  #if CC_USE_SKINNING\n    CCSkin(In.position, In.normal, In.tangent);\n  #endif\n}\nuniform highp mat4 cc_matView;\n  uniform highp mat4 cc_matProj;\n  uniform highp vec4 cc_cameraPos;\n  uniform mediump vec4 cc_fogBase;\n  uniform mediump vec4 cc_fogAdd;\n#if !USE_INSTANCING\n  uniform highp mat4 cc_matWorld;\n  uniform highp mat4 cc_matWorldIT;\n#endif\nvoid CCGetWorldMatrixFull(out mat4 matWorld, out mat4 matWorldIT)\n{\n  #if USE_INSTANCING\n    matWorld = mat4(\n      vec4(a_matWorld0.xyz, 0.0),\n      vec4(a_matWorld1.xyz, 0.0),\n      vec4(a_matWorld2.xyz, 0.0),\n      vec4(a_matWorld0.w, a_matWorld1.w, a_matWorld2.w, 1.0)\n    );\n    vec3 scale = 1.0 / vec3(length(a_matWorld0.xyz), length(a_matWorld1.xyz), length(a_matWorld2.xyz));\n    vec3 scale2 = scale * scale;\n    matWorldIT = mat4(\n      vec4(a_matWorld0.xyz * scale2.x, 0.0),\n      vec4(a_matWorld1.xyz * scale2.y, 0.0),\n      vec4(a_matWorld2.xyz * scale2.z, 0.0),\n      vec4(0.0, 0.0, 0.0, 1.0)\n    );\n  #else\n    matWorld = cc_matWorld;\n    matWorldIT = cc_matWorldIT;\n  #endif\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\n#if !CC_USE_ACCURATE_FOG\nvarying mediump float v_fog_factor;\n#endif\nvoid CC_TRANSFER_FOG(vec4 pos) {\n#if !CC_USE_ACCURATE_FOG\n    CC_TRANSFER_FOG_BASE(pos, v_fog_factor);\n#endif\n}\nvarying highp vec4 v_shadowPos;\nuniform highp mat4 cc_matLightViewProj;\n#if CC_SUPPORT_CASCADED_SHADOW_MAP\n  #endif\n#if defined(CC_USE_METAL) || defined(CC_USE_WGPU)\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y) y = -y\n#else\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y)\n#endif\n#if CC_RECEIVE_SHADOW\n  uniform highp sampler2D cc_shadowMap;\n  uniform highp sampler2D cc_spotShadowMap;\n    #define UnpackBitFromFloat(value, bit) (mod(floor(value / pow(10.0, float(bit))), 10.0) > 0.0)\n  #if CC_SUPPORT_CASCADED_SHADOW_MAP\n  #else\n  #endif\n#endif\n#if CC_RECEIVE_SHADOW\n#endif\nattribute vec4 a_color;\n#if HAS_SECOND_UV\n  attribute vec2 a_texCoord1;\n#endif\nvarying vec3 v_position;\nvarying vec3 v_normal;\nvarying vec3 v_tangent;\nvarying vec3 v_bitangent;\nvarying vec2 v_uv;\nvarying vec2 v_uv1;\nvarying vec4 v_color;\nvec4 vert () {\n  StandardVertInput In;\n  CCVertInput(In);\n  mat4 matWorld, matWorldIT;\n  CCGetWorldMatrixFull(matWorld, matWorldIT);\n  vec4 pos = matWorld * In.position;\n  v_position = pos.xyz;\n  v_normal = normalize((matWorldIT * vec4(In.normal, 0.0)).xyz);\n  v_tangent = normalize((matWorld * vec4(In.tangent.xyz, 0.0)).xyz);\n  v_bitangent = cross(v_normal, v_tangent) * In.tangent.w;\n  v_uv = a_texCoord;\n  #if HAS_SECOND_UV\n    v_uv1 = a_texCoord1;\n  #endif\n  v_color = a_color;\n  CC_TRANSFER_FOG(pos);\n  v_shadowPos = cc_matLightViewProj * pos;\n  return cc_matProj * (cc_matView * matWorld) * In.position;\n}\nvoid main() { gl_Position = vert(); }",
        "frag": "\nprecision highp float;\nuniform highp vec4 cc_cameraPos;\n  uniform mediump vec4 cc_fogColor;\n  uniform mediump vec4 cc_fogBase;\n  uniform mediump vec4 cc_fogAdd;\nvec4 CCFragOutput (vec4 color) {\n  return color;\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\nvoid CC_APPLY_FOG_BASE(inout vec4 color, float factor) {\n\tcolor = vec4(mix(cc_fogColor.rgb, color.rgb, factor), color.a);\n}\n#if !CC_USE_ACCURATE_FOG\nvarying mediump float v_fog_factor;\n#endif\nvoid CC_APPLY_FOG(inout vec4 color) {\n#if !CC_USE_ACCURATE_FOG\n    CC_APPLY_FOG_BASE(color, v_fog_factor);\n#endif\n}\nvoid CC_APPLY_FOG(inout vec4 color, vec3 worldPos) {\n#if CC_USE_ACCURATE_FOG\n    float factor;\n    CC_TRANSFER_FOG_BASE(vec4(worldPos, 1.0), factor);\n#else\n    float factor = v_fog_factor;\n#endif\n    CC_APPLY_FOG_BASE(color, factor);\n}\nvarying vec2 v_uv;\nvarying vec3 v_position;\nuniform sampler2D mainTexture;\n   uniform vec4 mainColor;\nvec4 frag () {\n  vec4 col = mainColor * texture2D(mainTexture, v_uv);\n  CC_APPLY_FOG(col, v_position);\n  return CCFragOutput(col);\n}\nvoid main() { gl_FragColor = frag(); }"
      },
      "builtins": {
        "globals": {
          "blocks": [
            {
              "name": "CCGlobal",
              "defines": []
            },
            {
              "name": "CCCamera",
              "defines": []
            },
            {
              "name": "CCShadow",
              "defines": []
            },
            {
              "name": "CCCSM",
              "defines": [
                "CC_SUPPORT_CASCADED_SHADOW_MAP"
              ]
            }
          ],
          "samplerTextures": [
            {
              "name": "cc_shadowMap",
              "defines": [
                "CC_RECEIVE_SHADOW"
              ]
            },
            {
              "name": "cc_spotShadowMap",
              "defines": [
                "CC_RECEIVE_SHADOW"
              ]
            }
          ],
          "buffers": [],
          "images": []
        },
        "locals": {
          "blocks": [
            {
              "name": "CCMorph",
              "defines": [
                "CC_USE_MORPH"
              ]
            },
            {
              "name": "CCSkinningTexture",
              "defines": [
                "CC_USE_SKINNING",
                "CC_USE_BAKED_ANIMATION"
              ]
            },
            {
              "name": "CCSkinningAnimation",
              "defines": [
                "CC_USE_SKINNING",
                "CC_USE_BAKED_ANIMATION"
              ]
            },
            {
              "name": "CCSkinning",
              "defines": [
                "CC_USE_SKINNING",
                "!CC_USE_BAKED_ANIMATION",
                "!CC_USE_REAL_TIME_JOINT_TEXTURE"
              ]
            },
            {
              "name": "CCLocal",
              "defines": [
                "!USE_INSTANCING"
              ]
            }
          ],
          "samplerTextures": [
            {
              "name": "cc_PositionDisplacements",
              "defines": [
                "CC_USE_MORPH",
                "CC_MORPH_TARGET_HAS_POSITION"
              ]
            },
            {
              "name": "cc_NormalDisplacements",
              "defines": [
                "CC_USE_MORPH",
                "CC_MORPH_TARGET_HAS_NORMAL"
              ]
            },
            {
              "name": "cc_TangentDisplacements",
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                  "name": "cc_matCSMViewProj",
                  "typename": "mat4",
                  "type": 25,
                  "count": 4,
                  "precision": "highp ",
                  "isArray": true
                },
                {
                  "name": "cc_csmProjDepthInfo",
                  "typename": "vec4",
                  "type": 16,
                  "count": 4,
                  "precision": "highp ",
                  "isArray": true
                },
                {
                  "name": "cc_csmProjInfo",
                  "typename": "vec4",
                  "type": 16,
                  "count": 4,
                  "precision": "highp ",
                  "isArray": true
                },
                {
                  "name": "cc_csmSplitsInfo",
                  "typename": "vec4",
                  "type": 16,
                  "count": 1,
                  "precision": "highp "
                }
              ],
              "defines": [
                "CC_SUPPORT_CASCADED_SHADOW_MAP"
              ],
              "stageFlags": 1
            }
          ],
          "samplerTextures": [
            {
              "tags": {
                "builtin": "global"
              },
              "name": "cc_shadowMap",
              "typename": "sampler2D",
              "type": 28,
              "count": 1,
              "precision": "highp ",
              "defines": [
                "CC_RECEIVE_SHADOW"
              ],
              "stageFlags": 1
            },
            {
              "tags": {
                "builtin": "global"
              },
              "name": "cc_spotShadowMap",
              "typename": "sampler2D",
              "type": 28,
              "count": 1,
              "precision": "highp ",
              "defines": [
                "CC_RECEIVE_SHADOW"
              ],
              "stageFlags": 1
            }
          ],
          "samplers": [],
          "textures": [],
          "buffers": [],
          "images": [],
          "subpassInputs": []
        }
      ],
      "hash": 2329238260,
      "glsl4": {
        "vert": "#extension GL_EXT_shader_explicit_arithmetic_types_int32: require\nprecision highp float;\n#define QUATER_PI         0.78539816340\n#define HALF_PI           1.57079632679\n#define PI                3.14159265359\n#define PI2               6.28318530718\n#define PI4               12.5663706144\n#define INV_QUATER_PI     1.27323954474\n#define INV_HALF_PI       0.63661977237\n#define INV_PI            0.31830988618\n#define INV_PI2           0.15915494309\n#define INV_PI4           0.07957747155\n#define EPSILON           1e-6\n#define EPSILON_LOWP      1e-4\n#define LOG2              1.442695\n#define EXP_VALUE         2.71828183\n#define FP_MAX            65504.0\n#define FP_SCALE          0.0009765625\n#define FP_SCALE_INV      1024.0\n#define GRAY_VECTOR       vec3(0.299, 0.587, 0.114)\n#define LIGHT_MAP_TYPE_DISABLED 0\n#define LIGHT_MAP_TYPE_ALL_IN_ONE 1\n#define LIGHT_MAP_TYPE_INDIRECT_OCCLUSION 2\n#define REFLECTION_PROBE_TYPE_NONE 0\n#define REFLECTION_PROBE_TYPE_CUBE 1\n#define REFLECTION_PROBE_TYPE_PLANAR 2\n#define REFLECTION_PROBE_TYPE_BLEND 3\n#define REFLECTION_PROBE_TYPE_BLEND_AND_SKYBOX 4\n#define LIGHT_TYPE_DIRECTIONAL 0.0\n#define LIGHT_TYPE_SPHERE 1.0\n#define LIGHT_TYPE_SPOT 2.0\n#define LIGHT_TYPE_POINT 3.0\n#define LIGHT_TYPE_RANGED_DIRECTIONAL 4.0\n#define IS_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_DIRECTIONAL)) < EPSILON_LOWP)\n#define IS_SPHERE_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPHERE)) < EPSILON_LOWP)\n#define IS_SPOT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPOT)) < EPSILON_LOWP)\n#define IS_POINT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_POINT)) < EPSILON_LOWP)\n#define IS_RANGED_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_RANGED_DIRECTIONAL)) < EPSILON_LOWP)\n#define TONE_MAPPING_ACES 0\n#define TONE_MAPPING_LINEAR 1\n#define SURFACES_MAX_TRANSMIT_DEPTH_VALUE 999999.0\n#ifndef CC_SURFACES_DEBUG_VIEW_SINGLE\n  #define CC_SURFACES_DEBUG_VIEW_SINGLE 1\n#endif\n#ifndef CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC\n  #define CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC 2\n#endif\nstruct StandardVertInput {\n  highp vec4 position;\n  vec3 normal;\n  vec4 tangent;\n};\nlayout(location = 0) in vec3 a_position;\nlayout(location = 1) in vec3 a_normal;\nlayout(location = 2) in vec2 a_texCoord;\nlayout(location = 3) in vec4 a_tangent;\n#if CC_USE_SKINNING\n    layout(location = 4) in u32vec4 a_joints;\n  layout(location = 5) in vec4 a_weights;\n#endif\n#if USE_INSTANCING\n  #if CC_USE_BAKED_ANIMATION\n    layout(location = 6) in highp vec4 a_jointAnimInfo;\n  #endif\n  layout(location = 7) in vec4 a_matWorld0;\n  layout(location = 8) in vec4 a_matWorld1;\n  layout(location = 9) in vec4 a_matWorld2;\n  #if CC_USE_LIGHTMAP\n    layout(location = 10) in vec4 a_lightingMapUVParam;\n  #endif\n  #if CC_USE_REFLECTION_PROBE || CC_RECEIVE_SHADOW\n    #if CC_RECEIVE_SHADOW\n    #endif\n    layout(location = 11) in vec4 a_localShadowBiasAndProbeId;\n  #endif\n  #if CC_USE_REFLECTION_PROBE\n    layout(location = 12) in vec4 a_reflectionProbeData;\n  #endif\n  #if CC_USE_LIGHT_PROBE\n    layout(location = 13) in vec4 a_sh_linear_const_r;\n    layout(location = 14) in vec4 a_sh_linear_const_g;\n    layout(location = 15) in vec4 a_sh_linear_const_b;\n  #endif\n#endif\n#if CC_USE_MORPH\n    int getVertexId() {\n      return gl_VertexIndex;\n    }\n#endif\nhighp float decode32 (highp vec4 rgba) {\n  rgba = rgba * 255.0;\n  highp float Sign = 1.0 - (step(128.0, (rgba[3]) + 0.5)) * 2.0;\n  highp float Exponent = 2.0 * (mod(float(int((rgba[3]) + 0.5)), 128.0)) + (step(128.0, (rgba[2]) + 0.5)) - 127.0;\n  highp float Mantissa = (mod(float(int((rgba[2]) + 0.5)), 128.0)) * 65536.0 + rgba[1] * 256.0 + rgba[0] + 8388608.0;\n  return Sign * exp2(Exponent - 23.0) * Mantissa;\n}\n#if CC_USE_MORPH\n  layout(set = 2, binding = 4) uniform CCMorph {\n    vec4 cc_displacementWeights[15];\n    vec4 cc_displacementTextureInfo;\n  };\n  #if CC_MORPH_TARGET_HAS_POSITION\n    layout(set = 2, binding = 8) uniform sampler2D cc_PositionDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    layout(set = 2, binding = 9) uniform sampler2D cc_NormalDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    layout(set = 2, binding = 10) uniform sampler2D cc_TangentDisplacements;\n  #endif\n  vec2 getPixelLocation(vec2 textureResolution, int pixelIndex) {\n    float pixelIndexF = float(pixelIndex);\n    float x = mod(pixelIndexF, textureResolution.x);\n    float y = floor(pixelIndexF / textureResolution.x);\n    return vec2(x, y);\n  }\n  vec2 getPixelCoordFromLocation(vec2 location, vec2 textureResolution) {\n    return (vec2(location.x, location.y) + .5) / textureResolution;\n  }\n  #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      vec4 fetchVec3ArrayFromTexture(sampler2D tex, int pixelIndex) {\n        ivec2 texSize = textureSize(tex, 0);\n        return texelFetch(tex, ivec2(pixelIndex % texSize.x, pixelIndex / texSize.x), 0);\n      }\n  #else\n    vec4 fetchVec3ArrayFromTexture(sampler2D tex, int elementIndex) {\n      int pixelIndex = elementIndex * 4;\n      vec2 location = getPixelLocation(cc_displacementTextureInfo.xy, pixelIndex);\n      vec2 x = getPixelCoordFromLocation(location + vec2(0.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 y = getPixelCoordFromLocation(location + vec2(1.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 z = getPixelCoordFromLocation(location + vec2(2.0, 0.0), cc_displacementTextureInfo.xy);\n      return vec4(\n        decode32(texture(tex, x)),\n        decode32(texture(tex, y)),\n        decode32(texture(tex, z)),\n        1.0\n      );\n    }\n  #endif\n  float getDisplacementWeight(int index) {\n    int quot = index / 4;\n    int remainder = index - quot * 4;\n    if (remainder == 0) {\n      return cc_displacementWeights[quot].x;\n    } else if (remainder == 1) {\n      return cc_displacementWeights[quot].y;\n    } else if (remainder == 2) {\n      return cc_displacementWeights[quot].z;\n    } else {\n      return cc_displacementWeights[quot].w;\n    }\n  }\n  vec3 getVec3DisplacementFromTexture(sampler2D tex, int vertexIndex) {\n  #if CC_MORPH_PRECOMPUTED\n    return fetchVec3ArrayFromTexture(tex, vertexIndex).rgb;\n  #else\n    vec3 result = vec3(0, 0, 0);\n    int nVertices = int(cc_displacementTextureInfo.z);\n    for (int iTarget = 0; iTarget < CC_MORPH_TARGET_COUNT; ++iTarget) {\n      result += (fetchVec3ArrayFromTexture(tex, nVertices * iTarget + vertexIndex).rgb * getDisplacementWeight(iTarget));\n    }\n    return result;\n  #endif\n  }\n  #if CC_MORPH_TARGET_HAS_POSITION\n  vec3 getPositionDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_PositionDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n  vec3 getNormalDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_NormalDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n  vec3 getTangentDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_TangentDisplacements, vertexId);\n  }\n  #endif\n  void applyMorph (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    int vertexId = getVertexId();\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    normal.xyz = normal.xyz + getNormalDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    tangent.xyz = tangent.xyz + getTangentDisplacement(vertexId);\n  #endif\n  }\n  void applyMorph (inout vec4 position) {\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(getVertexId());\n  #endif\n  }\n#endif\n#if CC_USE_SKINNING\n  #if CC_USE_BAKED_ANIMATION\n    layout(set = 2, binding = 3) uniform CCSkinningTexture {\n      highp vec4 cc_jointTextureInfo;\n    };\n    layout(set = 2, binding = 2) uniform CCSkinningAnimation {\n      highp vec4 cc_jointAnimInfo;\n    };\n    layout(set = 2, binding = 7) uniform highp sampler2D cc_jointTexture;\n    void CCGetJointTextureCoords(float pixelsPerJoint, float jointIdx, out highp float x, out highp float y, out highp float invSize)\n    {\n      #if USE_INSTANCING\n        highp float temp = pixelsPerJoint * (a_jointAnimInfo.x * a_jointAnimInfo.y + jointIdx) + a_jointAnimInfo.z;\n      #else\n        highp float temp = pixelsPerJoint * (cc_jointAnimInfo.x * cc_jointTextureInfo.y + jointIdx) + cc_jointTextureInfo.z;\n      #endif\n      invSize = cc_jointTextureInfo.w;\n      highp float tempY = floor(temp * invSize);\n      x = floor(temp - tempY * cc_jointTextureInfo.x);\n      y = (tempY + 0.5) * invSize;\n    }\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      layout(set = 2, binding = 7) uniform highp sampler2D cc_realtimeJoint;\n    #else\n      layout(set = 2, binding = 3) uniform CCSkinning {\n        highp vec4 cc_joints[CC_JOINT_UNIFORM_CAPACITY * 3];\n      };\n    #endif\n  #endif\n  #if CC_USE_BAKED_ANIMATION\n    #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(3.0, i, x, y, invSize);\n        vec4 v1 = texture(cc_jointTexture, vec2((x + 0.5) * invSize, y));\n        vec4 v2 = texture(cc_jointTexture, vec2((x + 1.5) * invSize, y));\n        vec4 v3 = texture(cc_jointTexture, vec2((x + 2.5) * invSize, y));\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #else\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(12.0, i, x, y, invSize);\n        vec4 v1 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 0.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 1.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 2.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 3.5) * invSize, y)))\n        );\n        vec4 v2 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 4.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 5.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 6.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 7.5) * invSize, y)))\n        );\n        vec4 v3 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 8.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 9.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 10.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 11.5) * invSize, y)))\n        );\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n        mat4 getJointMatrix (float i) {\n          float x = i;\n          vec4 v1 = texture(cc_realtimeJoint, vec2( x / 256.0, 0.5 / 3.0));\n          vec4 v2 = texture(cc_realtimeJoint, vec2( x / 256.0, 1.5 / 3.0));\n          vec4 v3 = texture(cc_realtimeJoint, vec2( x / 256.0, 2.5 / 3.0));\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #else\n        mat4 getJointMatrix (float i) {\n         float x = 4.0 * i;\n          vec4 v1 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 0.5 / 3.0)))\n          );\n          vec4 v2 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 1.5 / 3.0)))\n          );\n          vec4 v3 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 2.5 / 3.0)))\n          );\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #endif\n    #else\n      mat4 getJointMatrix (float i) {\n        int idx = int(i);\n        vec4 v1 = cc_joints[idx * 3];\n        vec4 v2 = cc_joints[idx * 3 + 1];\n        vec4 v3 = cc_joints[idx * 3 + 2];\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #endif\n  mat4 skinMatrix () {\n    vec4 joints = vec4(a_joints);\n    return getJointMatrix(joints.x) * a_weights.x\n         + getJointMatrix(joints.y) * a_weights.y\n         + getJointMatrix(joints.z) * a_weights.z\n         + getJointMatrix(joints.w) * a_weights.w;\n  }\n  void CCSkin (inout vec4 position) {\n    mat4 m = skinMatrix();\n    position = m * position;\n  }\n  void CCSkin (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    mat4 m = skinMatrix();\n    position = m * position;\n    normal = (m * vec4(normal, 0.0)).xyz;\n    tangent.xyz = (m * vec4(tangent.xyz, 0.0)).xyz;\n  }\n#endif\nvoid CCVertInput(inout StandardVertInput In)\n{\n    In.position = vec4(a_position, 1.0);\n    In.normal = a_normal;\n    In.tangent = a_tangent;\n  #if CC_USE_MORPH\n    applyMorph(In.position, In.normal, In.tangent);\n  #endif\n  #if CC_USE_SKINNING\n    CCSkin(In.position, In.normal, In.tangent);\n  #endif\n}\nlayout(set = 0, binding = 0) uniform CCGlobal {\n  highp   vec4 cc_time;\n  mediump vec4 cc_screenSize;\n  mediump vec4 cc_nativeSize;\n  mediump vec4 cc_probeInfo;\n  mediump vec4 cc_debug_view_mode;\n};\nlayout(set = 0, binding = 1) uniform CCCamera {\n  highp   mat4 cc_matView;\n  highp   mat4 cc_matViewInv;\n  highp   mat4 cc_matProj;\n  highp   mat4 cc_matProjInv;\n  highp   mat4 cc_matViewProj;\n  highp   mat4 cc_matViewProjInv;\n  highp   vec4 cc_cameraPos;\n  mediump vec4 cc_surfaceTransform;\n  mediump vec4 cc_screenScale;\n  mediump vec4 cc_exposure;\n  mediump vec4 cc_mainLitDir;\n  mediump vec4 cc_mainLitColor;\n  mediump vec4 cc_ambientSky;\n  mediump vec4 cc_ambientGround;\n  mediump vec4 cc_fogColor;\n  mediump vec4 cc_fogBase;\n  mediump vec4 cc_fogAdd;\n  mediump vec4 cc_nearFar;\n  mediump vec4 cc_viewPort;\n};\n#if !USE_INSTANCING\n  layout(set = 2, binding = 0) uniform CCLocal {\n    highp mat4 cc_matWorld;\n    highp mat4 cc_matWorldIT;\n    highp vec4 cc_lightingMapUVParam;\n    highp vec4 cc_localShadowBias;\n    highp vec4 cc_reflectionProbeData1;\n    highp vec4 cc_reflectionProbeData2;\n    highp vec4 cc_reflectionProbeBlendData1;\n    highp vec4 cc_reflectionProbeBlendData2;\n  };\n#endif\nvoid CCGetWorldMatrixFull(out mat4 matWorld, out mat4 matWorldIT)\n{\n  #if USE_INSTANCING\n    matWorld = mat4(\n      vec4(a_matWorld0.xyz, 0.0),\n      vec4(a_matWorld1.xyz, 0.0),\n      vec4(a_matWorld2.xyz, 0.0),\n      vec4(a_matWorld0.w, a_matWorld1.w, a_matWorld2.w, 1.0)\n    );\n    vec3 scale = 1.0 / vec3(length(a_matWorld0.xyz), length(a_matWorld1.xyz), length(a_matWorld2.xyz));\n    vec3 scale2 = scale * scale;\n    matWorldIT = mat4(\n      vec4(a_matWorld0.xyz * scale2.x, 0.0),\n      vec4(a_matWorld1.xyz * scale2.y, 0.0),\n      vec4(a_matWorld2.xyz * scale2.z, 0.0),\n      vec4(0.0, 0.0, 0.0, 1.0)\n    );\n  #else\n    matWorld = cc_matWorld;\n    matWorldIT = cc_matWorldIT;\n  #endif\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\n#if !CC_USE_ACCURATE_FOG\nlayout(location = 0) out mediump float v_fog_factor;\n#endif\nvoid CC_TRANSFER_FOG(vec4 pos) {\n#if !CC_USE_ACCURATE_FOG\n    CC_TRANSFER_FOG_BASE(pos, v_fog_factor);\n#endif\n}\nlayout(location = 1) out highp vec4 v_shadowPos;\nlayout(set = 0, binding = 2) uniform CCShadow {\n  highp mat4 cc_matLightView;\n  highp mat4 cc_matLightViewProj;\n  highp vec4 cc_shadowInvProjDepthInfo;\n  highp vec4 cc_shadowProjDepthInfo;\n  highp vec4 cc_shadowProjInfo;\n  mediump vec4 cc_shadowNFLSInfo;\n  mediump vec4 cc_shadowWHPBInfo;\n  mediump vec4 cc_shadowLPNNInfo;\n  lowp vec4 cc_shadowColor;\n  mediump vec4 cc_planarNDInfo;\n};\n#if CC_SUPPORT_CASCADED_SHADOW_MAP\n  layout(set = 0, binding = 3) uniform CCCSM {\n    highp vec4 cc_csmViewDir0[4];\n    highp vec4 cc_csmViewDir1[4];\n    highp vec4 cc_csmViewDir2[4];\n    highp vec4 cc_csmAtlas[4];\n    highp mat4 cc_matCSMViewProj[4];\n    highp vec4 cc_csmProjDepthInfo[4];\n    highp vec4 cc_csmProjInfo[4];\n    highp vec4 cc_csmSplitsInfo;\n  };\n#endif\n#if defined(CC_USE_METAL) || defined(CC_USE_WGPU)\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y) y = -y\n#else\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y)\n#endif\n#if CC_RECEIVE_SHADOW\n  layout(set = 0, binding = 4) uniform highp sampler2D cc_shadowMap;\n  layout(set = 0, binding = 6) uniform highp sampler2D cc_spotShadowMap;\n    #define UnpackBitFromFloat(value, bit) (mod(floor(value / pow(10.0, float(bit))), 10.0) > 0.0)\n  #if CC_SUPPORT_CASCADED_SHADOW_MAP\n  #else\n  #endif\n#endif\n#if CC_RECEIVE_SHADOW\n#endif\nlayout(location = 17) in vec4 a_color;\n#if HAS_SECOND_UV\n  layout(location = 18) in vec2 a_texCoord1;\n#endif\nlayout(location = 2) out vec3 v_position;\nlayout(location = 3) out vec3 v_normal;\nlayout(location = 4) out vec3 v_tangent;\nlayout(location = 5) out vec3 v_bitangent;\nlayout(location = 6) out vec2 v_uv;\nlayout(location = 7) out vec2 v_uv1;\nlayout(location = 8) out vec4 v_color;\nvec4 vert () {\n  StandardVertInput In;\n  CCVertInput(In);\n  mat4 matWorld, matWorldIT;\n  CCGetWorldMatrixFull(matWorld, matWorldIT);\n  vec4 pos = matWorld * In.position;\n  v_position = pos.xyz;\n  v_normal = normalize((matWorldIT * vec4(In.normal, 0.0)).xyz);\n  v_tangent = normalize((matWorld * vec4(In.tangent.xyz, 0.0)).xyz);\n  v_bitangent = cross(v_normal, v_tangent) * In.tangent.w;\n  v_uv = a_texCoord;\n  #if HAS_SECOND_UV\n    v_uv1 = a_texCoord1;\n  #endif\n  v_color = a_color;\n  CC_TRANSFER_FOG(pos);\n  v_shadowPos = cc_matLightViewProj * pos;\n  return cc_matProj * (cc_matView * matWorld) * In.position;\n}\nvoid main() { gl_Position = vert(); }",
        "frag": "\nprecision highp float;\nlayout(set = 0, binding = 0) uniform CCGlobal {\n  highp   vec4 cc_time;\n  mediump vec4 cc_screenSize;\n  mediump vec4 cc_nativeSize;\n  mediump vec4 cc_probeInfo;\n  mediump vec4 cc_debug_view_mode;\n};\nlayout(set = 0, binding = 1) uniform CCCamera {\n  highp   mat4 cc_matView;\n  highp   mat4 cc_matViewInv;\n  highp   mat4 cc_matProj;\n  highp   mat4 cc_matProjInv;\n  highp   mat4 cc_matViewProj;\n  highp   mat4 cc_matViewProjInv;\n  highp   vec4 cc_cameraPos;\n  mediump vec4 cc_surfaceTransform;\n  mediump vec4 cc_screenScale;\n  mediump vec4 cc_exposure;\n  mediump vec4 cc_mainLitDir;\n  mediump vec4 cc_mainLitColor;\n  mediump vec4 cc_ambientSky;\n  mediump vec4 cc_ambientGround;\n  mediump vec4 cc_fogColor;\n  mediump vec4 cc_fogBase;\n  mediump vec4 cc_fogAdd;\n  mediump vec4 cc_nearFar;\n  mediump vec4 cc_viewPort;\n};\nvec4 CCFragOutput (vec4 color) {\n  return color;\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\nvoid CC_APPLY_FOG_BASE(inout vec4 color, float factor) {\n\tcolor = vec4(mix(cc_fogColor.rgb, color.rgb, factor), color.a);\n}\n#if !CC_USE_ACCURATE_FOG\nlayout(location = 0) in mediump float v_fog_factor;\n#endif\nvoid CC_APPLY_FOG(inout vec4 color) {\n#if !CC_USE_ACCURATE_FOG\n    CC_APPLY_FOG_BASE(color, v_fog_factor);\n#endif\n}\nvoid CC_APPLY_FOG(inout vec4 color, vec3 worldPos) {\n#if CC_USE_ACCURATE_FOG\n    float factor;\n    CC_TRANSFER_FOG_BASE(vec4(worldPos, 1.0), factor);\n#else\n    float factor = v_fog_factor;\n#endif\n    CC_APPLY_FOG_BASE(color, factor);\n}\nlayout(location = 6) in vec2 v_uv;\nlayout(location = 2) in vec3 v_position;\nlayout(set = 1, binding = 1) uniform sampler2D mainTexture;\nlayout(set = 1, binding = 0) uniform Constant {\n  vec4 mainColor;\n};\nvec4 frag () {\n  vec4 col = mainColor * texture(mainTexture, v_uv);\n  CC_APPLY_FOG(col, v_position);\n  return CCFragOutput(col);\n}\nlayout(location = 0) out vec4 cc_FragColor;\nvoid main() { cc_FragColor = frag(); }"
      },
      "glsl3": {
        "vert": "\nprecision highp float;\n#define QUATER_PI         0.78539816340\n#define HALF_PI           1.57079632679\n#define PI                3.14159265359\n#define PI2               6.28318530718\n#define PI4               12.5663706144\n#define INV_QUATER_PI     1.27323954474\n#define INV_HALF_PI       0.63661977237\n#define INV_PI            0.31830988618\n#define INV_PI2           0.15915494309\n#define INV_PI4           0.07957747155\n#define EPSILON           1e-6\n#define EPSILON_LOWP      1e-4\n#define LOG2              1.442695\n#define EXP_VALUE         2.71828183\n#define FP_MAX            65504.0\n#define FP_SCALE          0.0009765625\n#define FP_SCALE_INV      1024.0\n#define GRAY_VECTOR       vec3(0.299, 0.587, 0.114)\n#define LIGHT_MAP_TYPE_DISABLED 0\n#define LIGHT_MAP_TYPE_ALL_IN_ONE 1\n#define LIGHT_MAP_TYPE_INDIRECT_OCCLUSION 2\n#define REFLECTION_PROBE_TYPE_NONE 0\n#define REFLECTION_PROBE_TYPE_CUBE 1\n#define REFLECTION_PROBE_TYPE_PLANAR 2\n#define REFLECTION_PROBE_TYPE_BLEND 3\n#define REFLECTION_PROBE_TYPE_BLEND_AND_SKYBOX 4\n#define LIGHT_TYPE_DIRECTIONAL 0.0\n#define LIGHT_TYPE_SPHERE 1.0\n#define LIGHT_TYPE_SPOT 2.0\n#define LIGHT_TYPE_POINT 3.0\n#define LIGHT_TYPE_RANGED_DIRECTIONAL 4.0\n#define IS_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_DIRECTIONAL)) < EPSILON_LOWP)\n#define IS_SPHERE_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPHERE)) < EPSILON_LOWP)\n#define IS_SPOT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPOT)) < EPSILON_LOWP)\n#define IS_POINT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_POINT)) < EPSILON_LOWP)\n#define IS_RANGED_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_RANGED_DIRECTIONAL)) < EPSILON_LOWP)\n#define TONE_MAPPING_ACES 0\n#define TONE_MAPPING_LINEAR 1\n#define SURFACES_MAX_TRANSMIT_DEPTH_VALUE 999999.0\n#ifndef CC_SURFACES_DEBUG_VIEW_SINGLE\n  #define CC_SURFACES_DEBUG_VIEW_SINGLE 1\n#endif\n#ifndef CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC\n  #define CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC 2\n#endif\nstruct StandardVertInput {\n  highp vec4 position;\n  vec3 normal;\n  vec4 tangent;\n};\nin vec3 a_position;\nin vec3 a_normal;\nin vec2 a_texCoord;\nin vec4 a_tangent;\n#if CC_USE_SKINNING\n    in vec4 a_joints;\n  in vec4 a_weights;\n#endif\n#if USE_INSTANCING\n  #if CC_USE_BAKED_ANIMATION\n    in highp vec4 a_jointAnimInfo;\n  #endif\n  in vec4 a_matWorld0;\n  in vec4 a_matWorld1;\n  in vec4 a_matWorld2;\n  #if CC_USE_LIGHTMAP\n    in vec4 a_lightingMapUVParam;\n  #endif\n  #if CC_USE_REFLECTION_PROBE || CC_RECEIVE_SHADOW\n    #if CC_RECEIVE_SHADOW\n    #endif\n    in vec4 a_localShadowBiasAndProbeId;\n  #endif\n  #if CC_USE_REFLECTION_PROBE\n    in vec4 a_reflectionProbeData;\n  #endif\n  #if CC_USE_LIGHT_PROBE\n    in vec4 a_sh_linear_const_r;\n    in vec4 a_sh_linear_const_g;\n    in vec4 a_sh_linear_const_b;\n  #endif\n#endif\n#if CC_USE_MORPH\n    in float a_vertexId;\n    int getVertexId() {\n      return int(a_vertexId);\n    }\n#endif\nhighp float decode32 (highp vec4 rgba) {\n  rgba = rgba * 255.0;\n  highp float Sign = 1.0 - (step(128.0, (rgba[3]) + 0.5)) * 2.0;\n  highp float Exponent = 2.0 * (mod(float(int((rgba[3]) + 0.5)), 128.0)) + (step(128.0, (rgba[2]) + 0.5)) - 127.0;\n  highp float Mantissa = (mod(float(int((rgba[2]) + 0.5)), 128.0)) * 65536.0 + rgba[1] * 256.0 + rgba[0] + 8388608.0;\n  return Sign * exp2(Exponent - 23.0) * Mantissa;\n}\n#if CC_USE_MORPH\n  layout(std140) uniform CCMorph {\n    vec4 cc_displacementWeights[15];\n    vec4 cc_displacementTextureInfo;\n  };\n  #if CC_MORPH_TARGET_HAS_POSITION\n    uniform sampler2D cc_PositionDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    uniform sampler2D cc_NormalDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    uniform sampler2D cc_TangentDisplacements;\n  #endif\n  vec2 getPixelLocation(vec2 textureResolution, int pixelIndex) {\n    float pixelIndexF = float(pixelIndex);\n    float x = mod(pixelIndexF, textureResolution.x);\n    float y = floor(pixelIndexF / textureResolution.x);\n    return vec2(x, y);\n  }\n  vec2 getPixelCoordFromLocation(vec2 location, vec2 textureResolution) {\n    return (vec2(location.x, location.y) + .5) / textureResolution;\n  }\n  #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      vec4 fetchVec3ArrayFromTexture(sampler2D tex, int pixelIndex) {\n        ivec2 texSize = textureSize(tex, 0);\n        return texelFetch(tex, ivec2(pixelIndex % texSize.x, pixelIndex / texSize.x), 0);\n      }\n  #else\n    vec4 fetchVec3ArrayFromTexture(sampler2D tex, int elementIndex) {\n      int pixelIndex = elementIndex * 4;\n      vec2 location = getPixelLocation(cc_displacementTextureInfo.xy, pixelIndex);\n      vec2 x = getPixelCoordFromLocation(location + vec2(0.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 y = getPixelCoordFromLocation(location + vec2(1.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 z = getPixelCoordFromLocation(location + vec2(2.0, 0.0), cc_displacementTextureInfo.xy);\n      return vec4(\n        decode32(texture(tex, x)),\n        decode32(texture(tex, y)),\n        decode32(texture(tex, z)),\n        1.0\n      );\n    }\n  #endif\n  float getDisplacementWeight(int index) {\n    int quot = index / 4;\n    int remainder = index - quot * 4;\n    if (remainder == 0) {\n      return cc_displacementWeights[quot].x;\n    } else if (remainder == 1) {\n      return cc_displacementWeights[quot].y;\n    } else if (remainder == 2) {\n      return cc_displacementWeights[quot].z;\n    } else {\n      return cc_displacementWeights[quot].w;\n    }\n  }\n  vec3 getVec3DisplacementFromTexture(sampler2D tex, int vertexIndex) {\n  #if CC_MORPH_PRECOMPUTED\n    return fetchVec3ArrayFromTexture(tex, vertexIndex).rgb;\n  #else\n    vec3 result = vec3(0, 0, 0);\n    int nVertices = int(cc_displacementTextureInfo.z);\n    for (int iTarget = 0; iTarget < CC_MORPH_TARGET_COUNT; ++iTarget) {\n      result += (fetchVec3ArrayFromTexture(tex, nVertices * iTarget + vertexIndex).rgb * getDisplacementWeight(iTarget));\n    }\n    return result;\n  #endif\n  }\n  #if CC_MORPH_TARGET_HAS_POSITION\n  vec3 getPositionDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_PositionDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n  vec3 getNormalDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_NormalDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n  vec3 getTangentDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_TangentDisplacements, vertexId);\n  }\n  #endif\n  void applyMorph (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    int vertexId = getVertexId();\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    normal.xyz = normal.xyz + getNormalDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    tangent.xyz = tangent.xyz + getTangentDisplacement(vertexId);\n  #endif\n  }\n  void applyMorph (inout vec4 position) {\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(getVertexId());\n  #endif\n  }\n#endif\n#if CC_USE_SKINNING\n  #if CC_USE_BAKED_ANIMATION\n    layout(std140) uniform CCSkinningTexture {\n      highp vec4 cc_jointTextureInfo;\n    };\n    layout(std140) uniform CCSkinningAnimation {\n      highp vec4 cc_jointAnimInfo;\n    };\n    uniform highp sampler2D cc_jointTexture;\n    void CCGetJointTextureCoords(float pixelsPerJoint, float jointIdx, out highp float x, out highp float y, out highp float invSize)\n    {\n      #if USE_INSTANCING\n        highp float temp = pixelsPerJoint * (a_jointAnimInfo.x * a_jointAnimInfo.y + jointIdx) + a_jointAnimInfo.z;\n      #else\n        highp float temp = pixelsPerJoint * (cc_jointAnimInfo.x * cc_jointTextureInfo.y + jointIdx) + cc_jointTextureInfo.z;\n      #endif\n      invSize = cc_jointTextureInfo.w;\n      highp float tempY = floor(temp * invSize);\n      x = floor(temp - tempY * cc_jointTextureInfo.x);\n      y = (tempY + 0.5) * invSize;\n    }\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      uniform highp sampler2D cc_realtimeJoint;\n    #else\n      layout(std140) uniform CCSkinning {\n        highp vec4 cc_joints[CC_JOINT_UNIFORM_CAPACITY * 3];\n      };\n    #endif\n  #endif\n  #if CC_USE_BAKED_ANIMATION\n    #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(3.0, i, x, y, invSize);\n        vec4 v1 = texture(cc_jointTexture, vec2((x + 0.5) * invSize, y));\n        vec4 v2 = texture(cc_jointTexture, vec2((x + 1.5) * invSize, y));\n        vec4 v3 = texture(cc_jointTexture, vec2((x + 2.5) * invSize, y));\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #else\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(12.0, i, x, y, invSize);\n        vec4 v1 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 0.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 1.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 2.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 3.5) * invSize, y)))\n        );\n        vec4 v2 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 4.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 5.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 6.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 7.5) * invSize, y)))\n        );\n        vec4 v3 = vec4(\n          decode32(texture(cc_jointTexture, vec2((x + 8.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 9.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 10.5) * invSize, y))),\n          decode32(texture(cc_jointTexture, vec2((x + 11.5) * invSize, y)))\n        );\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n        mat4 getJointMatrix (float i) {\n          float x = i;\n          vec4 v1 = texture(cc_realtimeJoint, vec2( x / 256.0, 0.5 / 3.0));\n          vec4 v2 = texture(cc_realtimeJoint, vec2( x / 256.0, 1.5 / 3.0));\n          vec4 v3 = texture(cc_realtimeJoint, vec2( x / 256.0, 2.5 / 3.0));\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #else\n        mat4 getJointMatrix (float i) {\n         float x = 4.0 * i;\n          vec4 v1 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 0.5 / 3.0)))\n          );\n          vec4 v2 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 1.5 / 3.0)))\n          );\n          vec4 v3 = vec4(\n            decode32(texture(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 2.5 / 3.0)))\n          );\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #endif\n    #else\n      mat4 getJointMatrix (float i) {\n        int idx = int(i);\n        vec4 v1 = cc_joints[idx * 3];\n        vec4 v2 = cc_joints[idx * 3 + 1];\n        vec4 v3 = cc_joints[idx * 3 + 2];\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #endif\n  mat4 skinMatrix () {\n    vec4 joints = vec4(a_joints);\n    return getJointMatrix(joints.x) * a_weights.x\n         + getJointMatrix(joints.y) * a_weights.y\n         + getJointMatrix(joints.z) * a_weights.z\n         + getJointMatrix(joints.w) * a_weights.w;\n  }\n  void CCSkin (inout vec4 position) {\n    mat4 m = skinMatrix();\n    position = m * position;\n  }\n  void CCSkin (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    mat4 m = skinMatrix();\n    position = m * position;\n    normal = (m * vec4(normal, 0.0)).xyz;\n    tangent.xyz = (m * vec4(tangent.xyz, 0.0)).xyz;\n  }\n#endif\nvoid CCVertInput(inout StandardVertInput In)\n{\n    In.position = vec4(a_position, 1.0);\n    In.normal = a_normal;\n    In.tangent = a_tangent;\n  #if CC_USE_MORPH\n    applyMorph(In.position, In.normal, In.tangent);\n  #endif\n  #if CC_USE_SKINNING\n    CCSkin(In.position, In.normal, In.tangent);\n  #endif\n}\nlayout(std140) uniform CCGlobal {\n  highp   vec4 cc_time;\n  mediump vec4 cc_screenSize;\n  mediump vec4 cc_nativeSize;\n  mediump vec4 cc_probeInfo;\n  mediump vec4 cc_debug_view_mode;\n};\nlayout(std140) uniform CCCamera {\n  highp   mat4 cc_matView;\n  highp   mat4 cc_matViewInv;\n  highp   mat4 cc_matProj;\n  highp   mat4 cc_matProjInv;\n  highp   mat4 cc_matViewProj;\n  highp   mat4 cc_matViewProjInv;\n  highp   vec4 cc_cameraPos;\n  mediump vec4 cc_surfaceTransform;\n  mediump vec4 cc_screenScale;\n  mediump vec4 cc_exposure;\n  mediump vec4 cc_mainLitDir;\n  mediump vec4 cc_mainLitColor;\n  mediump vec4 cc_ambientSky;\n  mediump vec4 cc_ambientGround;\n  mediump vec4 cc_fogColor;\n  mediump vec4 cc_fogBase;\n  mediump vec4 cc_fogAdd;\n  mediump vec4 cc_nearFar;\n  mediump vec4 cc_viewPort;\n};\n#if !USE_INSTANCING\n  layout(std140) uniform CCLocal {\n    highp mat4 cc_matWorld;\n    highp mat4 cc_matWorldIT;\n    highp vec4 cc_lightingMapUVParam;\n    highp vec4 cc_localShadowBias;\n    highp vec4 cc_reflectionProbeData1;\n    highp vec4 cc_reflectionProbeData2;\n    highp vec4 cc_reflectionProbeBlendData1;\n    highp vec4 cc_reflectionProbeBlendData2;\n  };\n#endif\nvoid CCGetWorldMatrixFull(out mat4 matWorld, out mat4 matWorldIT)\n{\n  #if USE_INSTANCING\n    matWorld = mat4(\n      vec4(a_matWorld0.xyz, 0.0),\n      vec4(a_matWorld1.xyz, 0.0),\n      vec4(a_matWorld2.xyz, 0.0),\n      vec4(a_matWorld0.w, a_matWorld1.w, a_matWorld2.w, 1.0)\n    );\n    vec3 scale = 1.0 / vec3(length(a_matWorld0.xyz), length(a_matWorld1.xyz), length(a_matWorld2.xyz));\n    vec3 scale2 = scale * scale;\n    matWorldIT = mat4(\n      vec4(a_matWorld0.xyz * scale2.x, 0.0),\n      vec4(a_matWorld1.xyz * scale2.y, 0.0),\n      vec4(a_matWorld2.xyz * scale2.z, 0.0),\n      vec4(0.0, 0.0, 0.0, 1.0)\n    );\n  #else\n    matWorld = cc_matWorld;\n    matWorldIT = cc_matWorldIT;\n  #endif\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\n#if !CC_USE_ACCURATE_FOG\nout mediump float v_fog_factor;\n#endif\nvoid CC_TRANSFER_FOG(vec4 pos) {\n#if !CC_USE_ACCURATE_FOG\n    CC_TRANSFER_FOG_BASE(pos, v_fog_factor);\n#endif\n}\nout highp vec4 v_shadowPos;\nlayout(std140) uniform CCShadow {\n  highp mat4 cc_matLightView;\n  highp mat4 cc_matLightViewProj;\n  highp vec4 cc_shadowInvProjDepthInfo;\n  highp vec4 cc_shadowProjDepthInfo;\n  highp vec4 cc_shadowProjInfo;\n  mediump vec4 cc_shadowNFLSInfo;\n  mediump vec4 cc_shadowWHPBInfo;\n  mediump vec4 cc_shadowLPNNInfo;\n  lowp vec4 cc_shadowColor;\n  mediump vec4 cc_planarNDInfo;\n};\n#if CC_SUPPORT_CASCADED_SHADOW_MAP\n  layout(std140) uniform CCCSM {\n    highp vec4 cc_csmViewDir0[4];\n    highp vec4 cc_csmViewDir1[4];\n    highp vec4 cc_csmViewDir2[4];\n    highp vec4 cc_csmAtlas[4];\n    highp mat4 cc_matCSMViewProj[4];\n    highp vec4 cc_csmProjDepthInfo[4];\n    highp vec4 cc_csmProjInfo[4];\n    highp vec4 cc_csmSplitsInfo;\n  };\n#endif\n#if defined(CC_USE_METAL) || defined(CC_USE_WGPU)\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y) y = -y\n#else\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y)\n#endif\n#if CC_RECEIVE_SHADOW\n  uniform highp sampler2D cc_shadowMap;\n  uniform highp sampler2D cc_spotShadowMap;\n    #define UnpackBitFromFloat(value, bit) (mod(floor(value / pow(10.0, float(bit))), 10.0) > 0.0)\n  #if CC_SUPPORT_CASCADED_SHADOW_MAP\n  #else\n  #endif\n#endif\n#if CC_RECEIVE_SHADOW\n#endif\nin vec4 a_color;\n#if HAS_SECOND_UV\n  in vec2 a_texCoord1;\n#endif\nout vec3 v_position;\nout vec3 v_normal;\nout vec3 v_tangent;\nout vec3 v_bitangent;\nout vec2 v_uv;\nout vec2 v_uv1;\nout vec4 v_color;\nvec4 vert () {\n  StandardVertInput In;\n  CCVertInput(In);\n  mat4 matWorld, matWorldIT;\n  CCGetWorldMatrixFull(matWorld, matWorldIT);\n  vec4 pos = matWorld * In.position;\n  v_position = pos.xyz;\n  v_normal = normalize((matWorldIT * vec4(In.normal, 0.0)).xyz);\n  v_tangent = normalize((matWorld * vec4(In.tangent.xyz, 0.0)).xyz);\n  v_bitangent = cross(v_normal, v_tangent) * In.tangent.w;\n  v_uv = a_texCoord;\n  #if HAS_SECOND_UV\n    v_uv1 = a_texCoord1;\n  #endif\n  v_color = a_color;\n  CC_TRANSFER_FOG(pos);\n  v_shadowPos = cc_matLightViewProj * pos;\n  return cc_matProj * (cc_matView * matWorld) * In.position;\n}\nvoid main() { gl_Position = vert(); }",
        "frag": "\nprecision highp float;\nlayout(std140) uniform CCGlobal {\n  highp   vec4 cc_time;\n  mediump vec4 cc_screenSize;\n  mediump vec4 cc_nativeSize;\n  mediump vec4 cc_probeInfo;\n  mediump vec4 cc_debug_view_mode;\n};\nlayout(std140) uniform CCCamera {\n  highp   mat4 cc_matView;\n  highp   mat4 cc_matViewInv;\n  highp   mat4 cc_matProj;\n  highp   mat4 cc_matProjInv;\n  highp   mat4 cc_matViewProj;\n  highp   mat4 cc_matViewProjInv;\n  highp   vec4 cc_cameraPos;\n  mediump vec4 cc_surfaceTransform;\n  mediump vec4 cc_screenScale;\n  mediump vec4 cc_exposure;\n  mediump vec4 cc_mainLitDir;\n  mediump vec4 cc_mainLitColor;\n  mediump vec4 cc_ambientSky;\n  mediump vec4 cc_ambientGround;\n  mediump vec4 cc_fogColor;\n  mediump vec4 cc_fogBase;\n  mediump vec4 cc_fogAdd;\n  mediump vec4 cc_nearFar;\n  mediump vec4 cc_viewPort;\n};\nvec4 CCFragOutput (vec4 color) {\n  return color;\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\nvoid CC_APPLY_FOG_BASE(inout vec4 color, float factor) {\n\tcolor = vec4(mix(cc_fogColor.rgb, color.rgb, factor), color.a);\n}\n#if !CC_USE_ACCURATE_FOG\nin mediump float v_fog_factor;\n#endif\nvoid CC_APPLY_FOG(inout vec4 color) {\n#if !CC_USE_ACCURATE_FOG\n    CC_APPLY_FOG_BASE(color, v_fog_factor);\n#endif\n}\nvoid CC_APPLY_FOG(inout vec4 color, vec3 worldPos) {\n#if CC_USE_ACCURATE_FOG\n    float factor;\n    CC_TRANSFER_FOG_BASE(vec4(worldPos, 1.0), factor);\n#else\n    float factor = v_fog_factor;\n#endif\n    CC_APPLY_FOG_BASE(color, factor);\n}\nin vec2 v_uv;\nin vec3 v_position;\nuniform sampler2D mainTexture;\nlayout(std140) uniform Constant {\n  vec4 mainColor;\n};\nvec4 frag () {\n  vec4 col = mainColor * texture(mainTexture, v_uv);\n  CC_APPLY_FOG(col, v_position);\n  return CCFragOutput(col);\n}\nlayout(location = 0) out vec4 cc_FragColor;\nvoid main() { cc_FragColor = frag(); }"
      },
      "glsl1": {
        "vert": "\n#ifdef GL_EXT_shader_texture_lod\n#extension GL_EXT_shader_texture_lod: enable\n#endif\nprecision highp float;\n#define QUATER_PI         0.78539816340\n#define HALF_PI           1.57079632679\n#define PI                3.14159265359\n#define PI2               6.28318530718\n#define PI4               12.5663706144\n#define INV_QUATER_PI     1.27323954474\n#define INV_HALF_PI       0.63661977237\n#define INV_PI            0.31830988618\n#define INV_PI2           0.15915494309\n#define INV_PI4           0.07957747155\n#define EPSILON           1e-6\n#define EPSILON_LOWP      1e-4\n#define LOG2              1.442695\n#define EXP_VALUE         2.71828183\n#define FP_MAX            65504.0\n#define FP_SCALE          0.0009765625\n#define FP_SCALE_INV      1024.0\n#define GRAY_VECTOR       vec3(0.299, 0.587, 0.114)\n#define LIGHT_MAP_TYPE_DISABLED 0\n#define LIGHT_MAP_TYPE_ALL_IN_ONE 1\n#define LIGHT_MAP_TYPE_INDIRECT_OCCLUSION 2\n#define REFLECTION_PROBE_TYPE_NONE 0\n#define REFLECTION_PROBE_TYPE_CUBE 1\n#define REFLECTION_PROBE_TYPE_PLANAR 2\n#define REFLECTION_PROBE_TYPE_BLEND 3\n#define REFLECTION_PROBE_TYPE_BLEND_AND_SKYBOX 4\n#define LIGHT_TYPE_DIRECTIONAL 0.0\n#define LIGHT_TYPE_SPHERE 1.0\n#define LIGHT_TYPE_SPOT 2.0\n#define LIGHT_TYPE_POINT 3.0\n#define LIGHT_TYPE_RANGED_DIRECTIONAL 4.0\n#define IS_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_DIRECTIONAL)) < EPSILON_LOWP)\n#define IS_SPHERE_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPHERE)) < EPSILON_LOWP)\n#define IS_SPOT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_SPOT)) < EPSILON_LOWP)\n#define IS_POINT_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_POINT)) < EPSILON_LOWP)\n#define IS_RANGED_DIRECTIONAL_LIGHT(light_type) (abs(float(light_type) - float(LIGHT_TYPE_RANGED_DIRECTIONAL)) < EPSILON_LOWP)\n#define TONE_MAPPING_ACES 0\n#define TONE_MAPPING_LINEAR 1\n#define SURFACES_MAX_TRANSMIT_DEPTH_VALUE 999999.0\n#ifndef CC_SURFACES_DEBUG_VIEW_SINGLE\n  #define CC_SURFACES_DEBUG_VIEW_SINGLE 1\n#endif\n#ifndef CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC\n  #define CC_SURFACES_DEBUG_VIEW_COMPOSITE_AND_MISC 2\n#endif\nstruct StandardVertInput {\n  highp vec4 position;\n  vec3 normal;\n  vec4 tangent;\n};\nattribute vec3 a_position;\nattribute vec3 a_normal;\nattribute vec2 a_texCoord;\nattribute vec4 a_tangent;\n#if CC_USE_SKINNING\n    attribute vec4 a_joints;\n  attribute vec4 a_weights;\n#endif\n#if USE_INSTANCING\n  #if CC_USE_BAKED_ANIMATION\n    attribute highp vec4 a_jointAnimInfo;\n  #endif\n  attribute vec4 a_matWorld0;\n  attribute vec4 a_matWorld1;\n  attribute vec4 a_matWorld2;\n  #if CC_USE_LIGHTMAP\n    attribute vec4 a_lightingMapUVParam;\n  #endif\n  #if CC_USE_REFLECTION_PROBE || CC_RECEIVE_SHADOW\n    #if CC_RECEIVE_SHADOW\n    #endif\n    attribute vec4 a_localShadowBiasAndProbeId;\n  #endif\n  #if CC_USE_REFLECTION_PROBE\n    attribute vec4 a_reflectionProbeData;\n  #endif\n  #if CC_USE_LIGHT_PROBE\n    attribute vec4 a_sh_linear_const_r;\n    attribute vec4 a_sh_linear_const_g;\n    attribute vec4 a_sh_linear_const_b;\n  #endif\n#endif\n#if CC_USE_MORPH\n    attribute float a_vertexId;\n    int getVertexId() {\n      return int(a_vertexId);\n    }\n#endif\nhighp float decode32 (highp vec4 rgba) {\n  rgba = rgba * 255.0;\n  highp float Sign = 1.0 - (step(128.0, (rgba[3]) + 0.5)) * 2.0;\n  highp float Exponent = 2.0 * (mod(float(int((rgba[3]) + 0.5)), 128.0)) + (step(128.0, (rgba[2]) + 0.5)) - 127.0;\n  highp float Mantissa = (mod(float(int((rgba[2]) + 0.5)), 128.0)) * 65536.0 + rgba[1] * 256.0 + rgba[0] + 8388608.0;\n  return Sign * exp2(Exponent - 23.0) * Mantissa;\n}\n#if CC_USE_MORPH\n  uniform vec4 cc_displacementWeights[15];\n  uniform vec4 cc_displacementTextureInfo;\n  #if CC_MORPH_TARGET_HAS_POSITION\n    uniform sampler2D cc_PositionDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    uniform sampler2D cc_NormalDisplacements;\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    uniform sampler2D cc_TangentDisplacements;\n  #endif\n  vec2 getPixelLocation(vec2 textureResolution, int pixelIndex) {\n    float pixelIndexF = float(pixelIndex);\n    float x = mod(pixelIndexF, textureResolution.x);\n    float y = floor(pixelIndexF / textureResolution.x);\n    return vec2(x, y);\n  }\n  vec2 getPixelCoordFromLocation(vec2 location, vec2 textureResolution) {\n    return (vec2(location.x, location.y) + .5) / textureResolution;\n  }\n  #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      vec4 fetchVec3ArrayFromTexture(sampler2D tex, int elementIndex) {\n        int pixelIndex = elementIndex;\n        vec2 location = getPixelLocation(cc_displacementTextureInfo.xy, pixelIndex);\n        vec2 uv = getPixelCoordFromLocation(location, cc_displacementTextureInfo.xy);\n        return texture2D(tex, uv);\n      }\n  #else\n    vec4 fetchVec3ArrayFromTexture(sampler2D tex, int elementIndex) {\n      int pixelIndex = elementIndex * 4;\n      vec2 location = getPixelLocation(cc_displacementTextureInfo.xy, pixelIndex);\n      vec2 x = getPixelCoordFromLocation(location + vec2(0.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 y = getPixelCoordFromLocation(location + vec2(1.0, 0.0), cc_displacementTextureInfo.xy);\n      vec2 z = getPixelCoordFromLocation(location + vec2(2.0, 0.0), cc_displacementTextureInfo.xy);\n      return vec4(\n        decode32(texture2D(tex, x)),\n        decode32(texture2D(tex, y)),\n        decode32(texture2D(tex, z)),\n        1.0\n      );\n    }\n  #endif\n  float getDisplacementWeight(int index) {\n    int quot = index / 4;\n    int remainder = index - quot * 4;\n    if (remainder == 0) {\n      return cc_displacementWeights[quot].x;\n    } else if (remainder == 1) {\n      return cc_displacementWeights[quot].y;\n    } else if (remainder == 2) {\n      return cc_displacementWeights[quot].z;\n    } else {\n      return cc_displacementWeights[quot].w;\n    }\n  }\n  vec3 getVec3DisplacementFromTexture(sampler2D tex, int vertexIndex) {\n  #if CC_MORPH_PRECOMPUTED\n    return fetchVec3ArrayFromTexture(tex, vertexIndex).rgb;\n  #else\n    vec3 result = vec3(0, 0, 0);\n    int nVertices = int(cc_displacementTextureInfo.z);\n    for (int iTarget = 0; iTarget < CC_MORPH_TARGET_COUNT; ++iTarget) {\n      result += (fetchVec3ArrayFromTexture(tex, nVertices * iTarget + vertexIndex).rgb * getDisplacementWeight(iTarget));\n    }\n    return result;\n  #endif\n  }\n  #if CC_MORPH_TARGET_HAS_POSITION\n  vec3 getPositionDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_PositionDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n  vec3 getNormalDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_NormalDisplacements, vertexId);\n  }\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n  vec3 getTangentDisplacement(int vertexId) {\n      return getVec3DisplacementFromTexture(cc_TangentDisplacements, vertexId);\n  }\n  #endif\n  void applyMorph (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    int vertexId = getVertexId();\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_NORMAL\n    normal.xyz = normal.xyz + getNormalDisplacement(vertexId);\n  #endif\n  #if CC_MORPH_TARGET_HAS_TANGENT\n    tangent.xyz = tangent.xyz + getTangentDisplacement(vertexId);\n  #endif\n  }\n  void applyMorph (inout vec4 position) {\n  #if CC_MORPH_TARGET_HAS_POSITION\n    position.xyz = position.xyz + getPositionDisplacement(getVertexId());\n  #endif\n  }\n#endif\n#if CC_USE_SKINNING\n  #if CC_USE_BAKED_ANIMATION\n    uniform highp vec4 cc_jointTextureInfo;\n    uniform highp vec4 cc_jointAnimInfo;\n    uniform highp sampler2D cc_jointTexture;\n    void CCGetJointTextureCoords(float pixelsPerJoint, float jointIdx, out highp float x, out highp float y, out highp float invSize)\n    {\n      #if USE_INSTANCING\n        highp float temp = pixelsPerJoint * (a_jointAnimInfo.x * a_jointAnimInfo.y + jointIdx) + a_jointAnimInfo.z;\n      #else\n        highp float temp = pixelsPerJoint * (cc_jointAnimInfo.x * cc_jointTextureInfo.y + jointIdx) + cc_jointTextureInfo.z;\n      #endif\n      invSize = cc_jointTextureInfo.w;\n      highp float tempY = floor(temp * invSize);\n      x = floor(temp - tempY * cc_jointTextureInfo.x);\n      y = (tempY + 0.5) * invSize;\n    }\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      uniform highp sampler2D cc_realtimeJoint;\n    #else\n      uniform highp vec4 cc_joints[CC_JOINT_UNIFORM_CAPACITY * 3];\n    #endif\n  #endif\n  #if CC_USE_BAKED_ANIMATION\n    #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(3.0, i, x, y, invSize);\n        vec4 v1 = texture2D(cc_jointTexture, vec2((x + 0.5) * invSize, y));\n        vec4 v2 = texture2D(cc_jointTexture, vec2((x + 1.5) * invSize, y));\n        vec4 v3 = texture2D(cc_jointTexture, vec2((x + 2.5) * invSize, y));\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #else\n      mat4 getJointMatrix (float i) {\n        highp float x, y, invSize;\n        CCGetJointTextureCoords(12.0, i, x, y, invSize);\n        vec4 v1 = vec4(\n          decode32(texture2D(cc_jointTexture, vec2((x + 0.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 1.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 2.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 3.5) * invSize, y)))\n        );\n        vec4 v2 = vec4(\n          decode32(texture2D(cc_jointTexture, vec2((x + 4.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 5.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 6.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 7.5) * invSize, y)))\n        );\n        vec4 v3 = vec4(\n          decode32(texture2D(cc_jointTexture, vec2((x + 8.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 9.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 10.5) * invSize, y))),\n          decode32(texture2D(cc_jointTexture, vec2((x + 11.5) * invSize, y)))\n        );\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #else\n    #if CC_USE_REAL_TIME_JOINT_TEXTURE\n      #if CC_DEVICE_SUPPORT_FLOAT_TEXTURE\n        mat4 getJointMatrix (float i) {\n          float x = i;\n          vec4 v1 = texture2D(cc_realtimeJoint, vec2( x / 256.0, 0.5 / 3.0));\n          vec4 v2 = texture2D(cc_realtimeJoint, vec2( x / 256.0, 1.5 / 3.0));\n          vec4 v3 = texture2D(cc_realtimeJoint, vec2( x / 256.0, 2.5 / 3.0));\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #else\n        mat4 getJointMatrix (float i) {\n         float x = 4.0 * i;\n          vec4 v1 = vec4(\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 0.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 0.5 / 3.0)))\n          );\n          vec4 v2 = vec4(\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 1.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 1.5 / 3.0)))\n          );\n          vec4 v3 = vec4(\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 0.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 1.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 2.5)/ 1024.0, 2.5 / 3.0))),\n            decode32(texture2D(cc_realtimeJoint, vec2((x + 3.5)/ 1024.0, 2.5 / 3.0)))\n          );\n          return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n        }\n      #endif\n    #else\n      mat4 getJointMatrix (float i) {\n        int idx = int(i);\n        vec4 v1 = cc_joints[idx * 3];\n        vec4 v2 = cc_joints[idx * 3 + 1];\n        vec4 v3 = cc_joints[idx * 3 + 2];\n        return mat4(vec4(v1.xyz, 0.0), vec4(v2.xyz, 0.0), vec4(v3.xyz, 0.0), vec4(v1.w, v2.w, v3.w, 1.0));\n      }\n    #endif\n  #endif\n  mat4 skinMatrix () {\n    vec4 joints = vec4(a_joints);\n    return getJointMatrix(joints.x) * a_weights.x\n         + getJointMatrix(joints.y) * a_weights.y\n         + getJointMatrix(joints.z) * a_weights.z\n         + getJointMatrix(joints.w) * a_weights.w;\n  }\n  void CCSkin (inout vec4 position) {\n    mat4 m = skinMatrix();\n    position = m * position;\n  }\n  void CCSkin (inout vec4 position, inout vec3 normal, inout vec4 tangent) {\n    mat4 m = skinMatrix();\n    position = m * position;\n    normal = (m * vec4(normal, 0.0)).xyz;\n    tangent.xyz = (m * vec4(tangent.xyz, 0.0)).xyz;\n  }\n#endif\nvoid CCVertInput(inout StandardVertInput In)\n{\n    In.position = vec4(a_position, 1.0);\n    In.normal = a_normal;\n    In.tangent = a_tangent;\n  #if CC_USE_MORPH\n    applyMorph(In.position, In.normal, In.tangent);\n  #endif\n  #if CC_USE_SKINNING\n    CCSkin(In.position, In.normal, In.tangent);\n  #endif\n}\nuniform highp mat4 cc_matView;\n  uniform highp mat4 cc_matProj;\n  uniform highp vec4 cc_cameraPos;\n  uniform mediump vec4 cc_fogBase;\n  uniform mediump vec4 cc_fogAdd;\n#if !USE_INSTANCING\n  uniform highp mat4 cc_matWorld;\n  uniform highp mat4 cc_matWorldIT;\n#endif\nvoid CCGetWorldMatrixFull(out mat4 matWorld, out mat4 matWorldIT)\n{\n  #if USE_INSTANCING\n    matWorld = mat4(\n      vec4(a_matWorld0.xyz, 0.0),\n      vec4(a_matWorld1.xyz, 0.0),\n      vec4(a_matWorld2.xyz, 0.0),\n      vec4(a_matWorld0.w, a_matWorld1.w, a_matWorld2.w, 1.0)\n    );\n    vec3 scale = 1.0 / vec3(length(a_matWorld0.xyz), length(a_matWorld1.xyz), length(a_matWorld2.xyz));\n    vec3 scale2 = scale * scale;\n    matWorldIT = mat4(\n      vec4(a_matWorld0.xyz * scale2.x, 0.0),\n      vec4(a_matWorld1.xyz * scale2.y, 0.0),\n      vec4(a_matWorld2.xyz * scale2.z, 0.0),\n      vec4(0.0, 0.0, 0.0, 1.0)\n    );\n  #else\n    matWorld = cc_matWorld;\n    matWorldIT = cc_matWorldIT;\n  #endif\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\n#if !CC_USE_ACCURATE_FOG\nvarying mediump float v_fog_factor;\n#endif\nvoid CC_TRANSFER_FOG(vec4 pos) {\n#if !CC_USE_ACCURATE_FOG\n    CC_TRANSFER_FOG_BASE(pos, v_fog_factor);\n#endif\n}\nvarying highp vec4 v_shadowPos;\nuniform highp mat4 cc_matLightViewProj;\n#if CC_SUPPORT_CASCADED_SHADOW_MAP\n  #endif\n#if defined(CC_USE_METAL) || defined(CC_USE_WGPU)\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y) y = -y\n#else\n#define CC_HANDLE_SAMPLE_NDC_FLIP_STATIC(y)\n#endif\n#if CC_RECEIVE_SHADOW\n  uniform highp sampler2D cc_shadowMap;\n  uniform highp sampler2D cc_spotShadowMap;\n    #define UnpackBitFromFloat(value, bit) (mod(floor(value / pow(10.0, float(bit))), 10.0) > 0.0)\n  #if CC_SUPPORT_CASCADED_SHADOW_MAP\n  #else\n  #endif\n#endif\n#if CC_RECEIVE_SHADOW\n#endif\nattribute vec4 a_color;\n#if HAS_SECOND_UV\n  attribute vec2 a_texCoord1;\n#endif\nvarying vec3 v_position;\nvarying vec3 v_normal;\nvarying vec3 v_tangent;\nvarying vec3 v_bitangent;\nvarying vec2 v_uv;\nvarying vec2 v_uv1;\nvarying vec4 v_color;\nvec4 vert () {\n  StandardVertInput In;\n  CCVertInput(In);\n  mat4 matWorld, matWorldIT;\n  CCGetWorldMatrixFull(matWorld, matWorldIT);\n  vec4 pos = matWorld * In.position;\n  v_position = pos.xyz;\n  v_normal = normalize((matWorldIT * vec4(In.normal, 0.0)).xyz);\n  v_tangent = normalize((matWorld * vec4(In.tangent.xyz, 0.0)).xyz);\n  v_bitangent = cross(v_normal, v_tangent) * In.tangent.w;\n  v_uv = a_texCoord;\n  #if HAS_SECOND_UV\n    v_uv1 = a_texCoord1;\n  #endif\n  v_color = a_color;\n  CC_TRANSFER_FOG(pos);\n  v_shadowPos = cc_matLightViewProj * pos;\n  return cc_matProj * (cc_matView * matWorld) * In.position;\n}\nvoid main() { gl_Position = vert(); }",
        "frag": "\nprecision highp float;\nuniform highp vec4 cc_cameraPos;\n  uniform mediump vec4 cc_fogColor;\n  uniform mediump vec4 cc_fogBase;\n  uniform mediump vec4 cc_fogAdd;\nvec4 CCFragOutput (vec4 color) {\n  return color;\n}\n#if CC_USE_FOG != 4\n  float LinearFog(vec4 pos, vec3 cameraPos, float fogStart, float fogEnd) {\n      vec4 wPos = pos;\n      float cam_dis = distance(cameraPos, wPos.xyz);\n      return clamp((fogEnd - cam_dis) / (fogEnd - fogStart), 0., 1.);\n  }\n  float ExpFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * fogDensity);\n      return f;\n  }\n  float ExpSquaredFog(vec4 pos, vec3 cameraPos, float fogStart, float fogDensity, float fogAtten) {\n      vec4 wPos = pos;\n      float cam_dis = max(distance(cameraPos, wPos.xyz) - fogStart, 0.0) / fogAtten * 4.;\n      float f = exp(-cam_dis * cam_dis * fogDensity * fogDensity);\n      return f;\n  }\n  float LayeredFog(vec4 pos, vec3 cameraPos, float fogTop, float fogRange, float fogAtten) {\n      vec4 wPos = pos;\n      vec3 camWorldProj = cameraPos.xyz;\n      camWorldProj.y = 0.;\n      vec3 worldPosProj = wPos.xyz;\n      worldPosProj.y = 0.;\n      float fDeltaD = distance(worldPosProj, camWorldProj) / fogAtten * 2.0;\n      float fDeltaY, fDensityIntegral;\n      if (cameraPos.y > fogTop) {\n          if (wPos.y < fogTop) {\n              fDeltaY = (fogTop - wPos.y) / fogRange * 2.0;\n              fDensityIntegral = fDeltaY * fDeltaY * 0.5;\n          }\n          else {\n              fDeltaY = 0.;\n              fDensityIntegral = 0.;\n          }\n      }\n      else {\n          if (wPos.y < fogTop) {\n              float fDeltaA = (fogTop - cameraPos.y) / fogRange * 2.;\n              float fDeltaB = (fogTop - wPos.y) / fogRange * 2.;\n              fDeltaY = abs(fDeltaA - fDeltaB);\n              fDensityIntegral = abs((fDeltaA * fDeltaA * 0.5) - (fDeltaB * fDeltaB * 0.5));\n          }\n          else {\n              fDeltaY = abs(fogTop - cameraPos.y) / fogRange * 2.;\n              fDensityIntegral = abs(fDeltaY * fDeltaY * 0.5);\n          }\n      }\n      float fDensity;\n      if (fDeltaY != 0.) {\n          fDensity = (sqrt(1.0 + ((fDeltaD / fDeltaY) * (fDeltaD / fDeltaY)))) * fDensityIntegral;\n      }\n      else {\n          fDensity = 0.;\n      }\n      float f = exp(-fDensity);\n      return f;\n  }\n#endif\nvoid CC_TRANSFER_FOG_BASE(vec4 pos, out float factor)\n{\n#if CC_USE_FOG == 0\n\tfactor = LinearFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.y);\n#elif CC_USE_FOG == 1\n\tfactor = ExpFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 2\n\tfactor = ExpSquaredFog(pos, cc_cameraPos.xyz, cc_fogBase.x, cc_fogBase.z, cc_fogAdd.z);\n#elif CC_USE_FOG == 3\n\tfactor = LayeredFog(pos, cc_cameraPos.xyz, cc_fogAdd.x, cc_fogAdd.y, cc_fogAdd.z);\n#else\n\tfactor = 1.0;\n#endif\n}\nvoid CC_APPLY_FOG_BASE(inout vec4 color, float factor) {\n\tcolor = vec4(mix(cc_fogColor.rgb, color.rgb, factor), color.a);\n}\n#if !CC_USE_ACCURATE_FOG\nvarying mediump float v_fog_factor;\n#endif\nvoid CC_APPLY_FOG(inout vec4 color) {\n#if !CC_USE_ACCURATE_FOG\n    CC_APPLY_FOG_BASE(color, v_fog_factor);\n#endif\n}\nvoid CC_APPLY_FOG(inout vec4 color, vec3 worldPos) {\n#if CC_USE_ACCURATE_FOG\n    float factor;\n    CC_TRANSFER_FOG_BASE(vec4(worldPos, 1.0), factor);\n#else\n    float factor = v_fog_factor;\n#endif\n    CC_APPLY_FOG_BASE(color, factor);\n}\nvarying vec2 v_uv;\nvarying vec3 v_position;\nuniform sampler2D mainTexture;\n   uniform vec4 mainColor;\nvec4 frag () {\n  vec4 col = mainColor * texture2D(mainTexture, v_uv);\n  CC_APPLY_FOG(col, v_position);\n  return CCFragOutput(col);\n}\nvoid main() { gl_FragColor = frag(); }"
      },
      "builtins": {
        "globals": {
          "blocks": [
            {
              "name": "CCGlobal",
              "defines": []
            },
            {
              "name": "CCCamera",
              "defines": []
            },
            {
              "name": "CCShadow",
              "defines": []
            },
            {
              "name": "CCCSM",
              "defines": [
                "CC_SUPPORT_CASCADED_SHADOW_MAP"
              ]
            }
          ],
          "samplerTextures": [
            {
              "name": "cc_shadowMap",
              "defines": [
                "CC_RECEIVE_SHADOW"
              ]
            },
            {
              "name": "cc_spotShadowMap",
              "defines": [
                "CC_RECEIVE_SHADOW"
              ]
            }
          ],
          "buffers": [],
          "images": []
        },
        "locals": {
          "blocks": [
            {
              "name": "CCMorph",
              "defines": [
                "CC_USE_MORPH"
              ]
            },
            {
              "name": "CCSkinningTexture",
              "defines": [
                "CC_USE_SKINNING",
                "CC_USE_BAKED_ANIMATION"
              ]
            },
            {
              "name": "CCSkinningAnimation",
              "defines": [
                "CC_USE_SKINNING",
                "CC_USE_BAKED_ANIMATION"
              ]
            },
            {
              "name": "CCSkinning",
              "defines": [
                "CC_USE_SKINNING",
                "!CC_USE_BAKED_ANIMATION",
                "!CC_USE_REAL_TIME_JOINT_TEXTURE"
              ]
            },
            {
              "name": "CCLocal",
              "defines": [
                "!USE_INSTANCING"
              ]
            }
          ],
          "samplerTextures": [
            {
              "name": "cc_PositionDisplacements",
              "defines": [
                "CC_USE_MORPH",
                "CC_MORPH_TARGET_HAS_POSITION"
              ]
            },
            {
              "name": "cc_NormalDisplacements",
              "defines": [
                "CC_USE_MORPH",
                "CC_MORPH_TARGET_HAS_NORMAL"
              ]
            },
            {
              "name": "cc_TangentDisplacements",
              "defines": [
                "CC_USE_MORPH",
                "CC_MORPH_TARGET_HAS_TANGENT"
              ]
            },
            {
              "name": "cc_jointTexture",
              "defines": [
                "CC_USE_SKINNING",
                "CC_USE_BAKED_ANIMATION"
              ]
            },
            {
              "name": "cc_realtimeJoint",
              "defines": [
                "CC_USE_SKINNING",
                "!CC_USE_BAKED_ANIMATION",
                "CC_USE_REAL_TIME_JOINT_TEXTURE"
              ]
            }
          ],
          "buffers": [],
          "images": []
        },
        "statistics": {
          "CC_EFFECT_USED_VERTEX_UNIFORM_VECTORS": 131,
          "CC_EFFECT_USED_FRAGMENT_UNIFORM_VECTORS": 43
        }
      },
      "defines": [
        {
          "name": "USE_INSTANCING",
          "type": "boolean",
          "defines": [],
          "editor": {
            "elevated": true
          }
        },
        {
          "name": "CC_USE_SKINNING",
          "type": "boolean",
          "defines": []
        },
        {
          "name": "CC_USE_BAKED_ANIMATION",
          "type": "boolean",
          "defines": [
            "USE_INSTANCING"
          ]
        },
        {
          "name": "CC_USE_LIGHTMAP",
          "type": "boolean",
          "defines": [
            "USE_INSTANCING"
          ]
        },
        {
          "name": "CC_USE_REFLECTION_PROBE",
          "type": "boolean",
          "defines": [
            "USE_INSTANCING"
          ]
        },
        {
          "name": "CC_RECEIVE_SHADOW",
          "type": "boolean",
          "defines": []
        },
        {
          "name": "CC_USE_LIGHT_PROBE",
          "type": "boolean",
          "defines": [
            "USE_INSTANCING"
          ]
        },
        {
          "name": "CC_USE_MORPH",
          "type": "boolean",
          "defines": []
        },
        {
          "name": "CC_MORPH_TARGET_COUNT",
          "type": "number",
          "defines": [
            "CC_USE_MORPH"
          ],
          "range": [
            2,
            8
          ]
        },
        {
          "name": "CC_MORPH_TARGET_HAS_POSITION",
          "type": "boolean",
          "defines": [
            "CC_USE_MORPH"
          ]
        },
        {
          "name": "CC_MORPH_TARGET_HAS_NORMAL",
          "type": "boolean",
          "defines": [
            "CC_USE_MORPH"
          ]
        },
        {
          "name": "CC_MORPH_TARGET_HAS_TANGENT",
          "type": "boolean",
          "defines": [
            "CC_USE_MORPH"
          ]
        },
        {
          "name": "CC_MORPH_PRECOMPUTED",
          "type": "boolean",
          "defines": [
            "CC_USE_MORPH"
          ]
        },
        {
          "name": "CC_USE_REAL_TIME_JOINT_TEXTURE",
          "type": "boolean",
          "defines": [
            "CC_USE_SKINNING",
            "!CC_USE_BAKED_ANIMATION"
          ]
        },
        {
          "name": "CC_USE_FOG",
          "type": "number",
          "defines": [],
          "range": [
            0,
            4
          ]
        },
        {
          "name": "CC_USE_ACCURATE_FOG",
          "type": "boolean",
          "defines": []
        },
        {
          "name": "CC_SUPPORT_CASCADED_SHADOW_MAP",
          "type": "boolean",
          "defines": []
        },
        {
          "name": "HAS_SECOND_UV",
          "type": "boolean",
          "defines": []
        }
      ],
      "name": "../default_file_content/effect/default|general-vs:vert|unlit-fs:frag"
    }
  ],
  "combinations": [],
  "hideInEditor": false
}