[occt.git] / src / Shaders / Shaders_Declarations_glsl.pxx

// This file has been automatically generated from resource file src/Shaders/Declarations.glsl

static const char Shaders_Declarations_glsl[] =
  "\n"
  "//! @file Declarations.glsl includes definition of common uniform variables in OCCT GLSL programs\n"
  "//! @def THE_MAX_LIGHTS\n"
  "//! Specifies the length of array of lights, which is 8 by default. Defined by Shader Manager.\n"
  "// #define THE_MAX_LIGHTS 8\n"
  "\n"
  "//! @def THE_MAX_CLIP_PLANES\n"
  "//! Specifies the length of array of clipping planes, which is 8 by default. Defined by Shader Manager.\n"
  "// #define THE_MAX_CLIP_PLANES 8\n"
  "\n"
  "//! @def THE_NB_FRAG_OUTPUTS\n"
  "//! Specifies the length of array of Fragment Shader outputs, which is 1 by default. Defined by Shader Manager.\n"
  "// #define THE_NB_FRAG_OUTPUTS 1\n"
  "\n"
  "// compatibility macros\n"
  "#if (__VERSION__ >= 130)\n"
  "  #define THE_ATTRIBUTE  in\n"
  "  #define THE_SHADER_IN  in\n"
  "  #define THE_SHADER_OUT out\n"
  "  #define THE_OUT        out\n"
  "  #define occTexture1D   texture\n"
  "  #define occTexture2D   texture\n"
  "  #define occTexture3D   texture\n"
  "  #define occTextureCube texture\n"
  "  #define occTextureCubeLod textureLod\n"
  "#else\n"
  "  #define THE_ATTRIBUTE  attribute\n"
  "  #define THE_SHADER_IN  varying\n"
  "  #define THE_SHADER_OUT varying\n"
  "  #define THE_OUT\n"
  "  #define occTexture1D   texture1D\n"
  "  #define occTexture2D   texture2D\n"
  "  #define occTexture3D   texture3D\n"
  "  #define occTextureCube textureCube\n"
  "  #if !defined(GL_ES) || defined(textureCubeLod)\n"
  "    #define occTextureCubeLod textureCubeLod\n"
  "  #else // fallback\n"
  "    #define occTextureCubeLod(theSampl,theCoord,theLod) textureCube(theSampl,theCoord)\n"
  "  #endif\n"
  "#endif\n"
  "\n"
  "#ifdef GL_ES\n"
  "#if (__VERSION__ >= 300)\n"
  "  #define THE_PREC_ENUM highp // lowp should be enough for enums but triggers driver bugs\n"
  "#else\n"
  "  #define THE_PREC_ENUM lowp\n"
  "#endif\n"
  "#else\n"
  "  #define THE_PREC_ENUM\n"
  "#endif\n"
  "\n"
  "// Vertex attributes\n"
  "#ifdef VERTEX_SHADER\n"
  "  THE_ATTRIBUTE vec4 occVertex;\n"
  "  THE_ATTRIBUTE vec3 occNormal;\n"
  "  THE_ATTRIBUTE vec4 occTexCoord;\n"
  "  THE_ATTRIBUTE vec4 occVertColor;\n"
  "#elif defined(FRAGMENT_SHADER)\n"
  "  #if (__VERSION__ >= 130)\n"
  "    #ifdef OCC_ENABLE_draw_buffers\n"
  "      out vec4 occFragColorArray[THE_NB_FRAG_OUTPUTS];\n"
  "      #define occFragColorArrayAlias occFragColorArray\n"
  "      #define occFragColor0 occFragColorArray[0]\n"
  "    #else\n"
  "      out vec4 occFragColor0;\n"
  "    #endif\n"
  "  #else\n"
  "    #ifdef OCC_ENABLE_draw_buffers\n"
  "      #define occFragColorArrayAlias gl_FragData\n"
  "      #define occFragColor0 gl_FragData[0]\n"
  "    #else\n"
  "      #define occFragColor0 gl_FragColor\n"
  "    #endif\n"
  "  #endif\n"
  "\n"
  "  #if (THE_NB_FRAG_OUTPUTS >= 2)\n"
  "    #define occFragColor1 occFragColorArrayAlias[1]\n"
  "  #else\n"
  "    vec4 occFragColor1;\n"
  "  #endif\n"
  "  #if (THE_NB_FRAG_OUTPUTS >= 3)\n"
  "    #define occFragColor2 occFragColorArrayAlias[2]\n"
  "  #else\n"
  "    vec4 occFragColor2;\n"
  "  #endif\n"
  "  #if (THE_NB_FRAG_OUTPUTS >= 4)\n"
  "    #define occFragColor3 occFragColorArrayAlias[3]\n"
  "  #else\n"
  "    vec4 occFragColor3;\n"
  "  #endif\n"
  "\n"
  "  // Built-in outputs notation\n"
  "  #define occFragColor    occFragColor0\n"
  "  #define occFragCoverage occFragColor1\n"
  "\n"
  "  #define occPeelDepth      occFragColor0\n"
  "  #define occPeelFrontColor occFragColor1\n"
  "  #define occPeelBackColor  occFragColor2\n"
  "\n"
  "  //! Define the main Fragment Shader early return procedure.\n"
  "  bool occFragEarlyReturn();\n"
  "\n"
  "  //! Define the main Fragment Shader output - color value.\n"
  "  void occSetFragColor (in vec4 theColor);\n"
  "#endif\n"
  "\n"
  "// Pi number definitions\n"
  "#define PI       3.141592654\n"
  "#define PI_2     6.283185307\n"
  "#define PI_DIV_2 1.570796327\n"
  "#define PI_DIV_3 1.047197551\n"
  "#define PI_DIV_4 0.785398163\n"
  "#define INV_PI   0.318309886\n"
  "#define INV_PI_2 0.159154943\n"
  "\n"
  "// Matrix state\n"
  "uniform mat4 occWorldViewMatrix;  //!< World-view  matrix\n"
  "uniform mat4 occProjectionMatrix; //!< Projection  matrix\n"
  "uniform mat4 occModelWorldMatrix; //!< Model-world matrix\n"
  "\n"
  "uniform mat4 occWorldViewMatrixInverse;    //!< Inverse of the world-view  matrix\n"
  "uniform mat4 occProjectionMatrixInverse;   //!< Inverse of the projection  matrix\n"
  "uniform mat4 occModelWorldMatrixInverse;   //!< Inverse of the model-world matrix\n"
  "\n"
  "uniform mat4 occWorldViewMatrixTranspose;  //!< Transpose of the world-view  matrix\n"
  "uniform mat4 occProjectionMatrixTranspose; //!< Transpose of the projection  matrix\n"
  "uniform mat4 occModelWorldMatrixTranspose; //!< Transpose of the model-world matrix\n"
  "\n"
  "uniform mat4 occWorldViewMatrixInverseTranspose;  //!< Transpose of the inverse of the world-view  matrix\n"
  "uniform mat4 occProjectionMatrixInverseTranspose; //!< Transpose of the inverse of the projection  matrix\n"
  "uniform mat4 occModelWorldMatrixInverseTranspose; //!< Transpose of the inverse of the model-world matrix\n"
  "\n"
  "#if defined(THE_IS_PBR)\n"
  "uniform sampler2D   occEnvLUT;             //!< Environment Lookup Table\n"
  "uniform sampler2D   occDiffIBLMapSHCoeffs; //!< Packed diffuse (irradiance) IBL map's spherical harmonics coefficients\n"
  "uniform samplerCube occSpecIBLMap;         //!< Specular IBL map\n"
  "uniform int         occNbSpecIBLLevels;    //!< Number of mipmap levels used in occSpecIBLMap to store different roughness values maps\n"
  "\n"
  "vec3 occDiffIBLMap (in vec3 theNormal); //!< Unpacks spherical harmonics coefficients to diffuse IBL map's values\n"
  "#endif\n"
  "\n"
  "// light type enumeration (same as Graphic3d_TypeOfLightSource)\n"
  "const int OccLightType_Direct = 1; //!< directional     light source\n"
  "const int OccLightType_Point  = 2; //!< isotropic point light source\n"
  "const int OccLightType_Spot   = 3; //!< spot            light source\n"
  "\n"
  "// Light sources\n"
  "uniform               vec4 occLightAmbient;      //!< Cumulative ambient color\n"
  "#if defined(THE_MAX_LIGHTS) && (THE_MAX_LIGHTS > 0)\n"
  "#if (THE_MAX_LIGHTS > 1)\n"
  "  #define occLight_Index(theId) theId\n"
  "#else\n"
  "  #define occLight_Index(theId) 0\n"
  "#endif\n"
  "uniform THE_PREC_ENUM int  occLightSourcesCount; //!< Total number of light sources\n"
  "\n"
  "//! Type of light source, int (see OccLightType enum).\n"
  "#define occLight_Type(theId)              occLightSourcesTypes[occLight_Index(theId)]\n"
  "\n"
  "//! Specular intensity (equals to diffuse), vec3.\n"
  "#define occLight_Specular(theId)          occLightSources[occLight_Index(theId) * 4 + 0].rgb\n"
  "\n"
  "//! Intensity of light source (>= 0), float.\n"
  "#define occLight_Intensity(theId)         occLightSources[occLight_Index(theId) * 4 + 0].a\n"
  "\n"
  "//! Is light a headlight, bool? DEPRECATED method.\n"
  "#define occLight_IsHeadlight(theId) false\n"
  "\n"
  "//! Position of specified light source or direction of directional light source, vec3.\n"
  "#define occLight_Position(theId)          occLightSources[occLight_Index(theId) * 4 + 1].xyz\n"
  "\n"
  "//! Direction of specified spot light source, vec3.\n"
  "#define occLight_SpotDirection(theId)     occLightSources[occLight_Index(theId) * 4 + 2].xyz\n"
  "\n"
  "//! Range on which point light source (positional or spot) can affect (>= 0), float.\n"
  "#define occLight_Range(theId)             occLightSources[occLight_Index(theId) * 4 + 2].w\n"
  "\n"
  "//! Maximum spread angle of the spot light (in radians), float.\n"
  "#define occLight_SpotCutOff(theId)        occLightSources[occLight_Index(theId) * 4 + 3].z\n"
  "\n"
  "//! Attenuation of the spot light intensity (from 0 to 1), float.\n"
  "#define occLight_SpotExponent(theId)      occLightSources[occLight_Index(theId) * 4 + 3].w\n"
  "\n"
  "#if !defined(THE_IS_PBR)\n"
  "//! Diffuse intensity (equals to Specular), vec3.\n"
  "#define occLight_Diffuse(theId)           occLightSources[occLight_Index(theId) * 4 + 0].rgb\n"
  "\n"
  "//! Const attenuation factor of positional light source, float.\n"
  "#define occLight_ConstAttenuation(theId)  occLightSources[occLight_Index(theId) * 4 + 3].x\n"
  "\n"
  "//! Linear attenuation factor of positional light source, float.\n"
  "#define occLight_LinearAttenuation(theId) occLightSources[occLight_Index(theId) * 4 + 3].y\n"
  "#endif\n"
  "#endif\n"
  "\n"
  "#if defined(THE_IS_PBR)\n"
  "//! Converts roughness value from range [0, 1] to real value for calculations\n"
  "float occRoughness (in float theNormalizedRoughness);\n"
  "\n"
  "// Front/back material properties accessors\n"
  "vec4  occPBRMaterial_Color(in bool theIsFront);    //!< Base color of PBR material\n"
  "float occPBRMaterial_Metallic(in bool theIsFront); //!< Metallic coefficient\n"
  "float occPBRMaterial_NormalizedRoughness(in bool theIsFront); //!< Normalized roughness coefficient\n"
  "vec3  occPBRMaterial_Emission(in bool theIsFront); //!< Light intensity emitted by material\n"
  "float occPBRMaterial_IOR(in bool theIsFront);      //!< Index of refraction\n"
  "#define occMaterial_Emission occPBRMaterial_Emission\n"
  "#define occMaterial_Color occPBRMaterial_Color\n"
  "#else\n"
  "vec4  occMaterial_Diffuse(in bool theIsFront);     //!< Diffuse  reflection\n"
  "vec3  occMaterial_Specular(in bool theIsFront);    //!< Specular reflection\n"
  "float occMaterial_Shininess(in bool theIsFront);   //!< Specular exponent\n"
  "vec3  occMaterial_Ambient(in bool theIsFront);     //!< Ambient  reflection\n"
  "vec3  occMaterial_Emission(in bool theIsFront);    //!< Emission color\n"
  "#define occMaterial_Color occMaterial_Diffuse\n"
  "#endif\n"
  "\n"
  "#ifdef THE_HAS_DEFAULT_SAMPLER\n"
  "#define occActiveSampler    occSampler0  //!< alias for backward compatibility\n"
  "#define occSamplerBaseColor occSampler0  //!< alias to a base color texture\n"
  "uniform sampler2D           occSampler0; //!< current active sampler;\n"
  "#endif                                   //!  occSampler1, occSampler2,... should be defined in GLSL program body for multitexturing\n"
  "\n"
  "#if defined(THE_HAS_TEXTURE_COLOR) && defined(FRAGMENT_SHADER)\n"
  "#define occMaterialBaseColor(theIsFront, theTexCoord) (occMaterial_Color(theIsFront) * occTexture2D(occSamplerBaseColor, theTexCoord))\n"
  "#else\n"
  "#define occMaterialBaseColor(theIsFront, theTexCoord) occMaterial_Color(theIsFront)\n"
  "#endif\n"
  "\n"
  "#if defined(THE_HAS_TEXTURE_OCCLUSION) && defined(FRAGMENT_SHADER)\n"
  "uniform sampler2D occSamplerOcclusion;   //!< R occlusion texture sampler\n"
  "#define occMaterialOcclusion(theColor, theTexCoord) theColor *= occTexture2D(occSamplerOcclusion, theTexCoord).r;\n"
  "#else\n"
  "#define occMaterialOcclusion(theColor, theTexCoord)\n"
  "#endif\n"
  "\n"
  "#if defined(THE_HAS_TEXTURE_EMISSIVE) && defined(FRAGMENT_SHADER)\n"
  "uniform sampler2D occSamplerEmissive;    //!< RGB emissive texture sampler\n"
  "#define occMaterialEmission(theIsFront, theTexCoord) (occMaterial_Emission(theIsFront) * occTexture2D(occSamplerEmissive, theTexCoord).rgb)\n"
  "#else\n"
  "#define occMaterialEmission(theIsFront, theTexCoord) occMaterial_Emission(theIsFront)\n"
  "#endif\n"
  "\n"
  "#if defined(THE_HAS_TEXTURE_NORMAL) && defined(FRAGMENT_SHADER)\n"
  "uniform sampler2D occSamplerNormal;      //!< XYZ normal texture sampler with W==0 indicating no texture\n"
  "#define occTextureNormal(theTexCoord) occTexture2D(occSamplerNormal, theTexCoord)\n"
  "#else\n"
  "#define occTextureNormal(theTexCoord) vec4(0.0) // no normal map\n"
  "#endif\n"
  "\n"
  "#if defined(THE_HAS_TEXTURE_METALROUGHNESS) && defined(FRAGMENT_SHADER)\n"
  "uniform sampler2D occSamplerMetallicRoughness; //!< BG metallic-roughness texture sampler\n"
  "#define occMaterialRoughness(theIsFront, theTexCoord) (occPBRMaterial_NormalizedRoughness(theIsFront) * occTexture2D(occSamplerMetallicRoughness, theTexCoord).g)\n"
  "#define occMaterialMetallic(theIsFront,  theTexCoord) (occPBRMaterial_Metallic(theIsFront) * occTexture2D(occSamplerMetallicRoughness, theTexCoord).b)\n"
  "#else\n"
  "#define occMaterialRoughness(theIsFront, theTexCoord) occPBRMaterial_NormalizedRoughness(theIsFront)\n"
  "#define occMaterialMetallic(theIsFront,  theTexCoord) occPBRMaterial_Metallic(theIsFront)\n"
  "#endif\n"
  "\n"
  "uniform               vec4      occColor;              //!< color value (in case of disabled lighting)\n"
  "uniform THE_PREC_ENUM int       occDistinguishingMode; //!< Are front and back faces distinguished?\n"
  "uniform THE_PREC_ENUM int       occTextureEnable;      //!< Is texture enabled?\n"
  "uniform               vec4      occTexTrsf2d[2];       //!< 2D texture transformation parameters\n"
  "uniform               float     occPointSize;          //!< point size\n"
  "\n"
  "//! Parameters of blended order-independent transparency rendering algorithm\n"
  "uniform               int       occOitOutput;      //!< Enable bit for writing output color buffers for OIT (occFragColor, occFragCoverage)\n"
  "uniform               float     occOitDepthFactor; //!< Influence of the depth component to the coverage of the accumulated fragment\n"
  "uniform               float     occAlphaCutoff;    //!< alpha test cutoff value\n"
  "\n"
  "//! Parameters of clipping planes\n"
  "#if defined(THE_MAX_CLIP_PLANES) && (THE_MAX_CLIP_PLANES > 0)\n"
  "uniform               vec4 occClipPlaneEquations[THE_MAX_CLIP_PLANES];\n"
  "uniform THE_PREC_ENUM int  occClipPlaneChains[THE_MAX_CLIP_PLANES]; //! Indicating the number of planes in the Chain\n"
  "uniform THE_PREC_ENUM int  occClipPlaneCount;   //!< Total number of clip planes\n"
  "#endif\n"
  "//! @endfile Declarations.glsl\n";
Commit	Line	Data
ee5befae	1	// This file has been automatically generated from resource file src/Shaders/Declarations.glsl
	2
	3	static const char Shaders_Declarations_glsl[] =
ee5befae	4	"\n"
d95f5ce1	5	"//! @file Declarations.glsl includes definition of common uniform variables in OCCT GLSL programs\n"
daf73ab7	6	"//! @def THE_MAX_LIGHTS\n"
	7	"//! Specifies the length of array of lights, which is 8 by default. Defined by Shader Manager.\n"
	8	"// #define THE_MAX_LIGHTS 8\n"
	9	"\n"
	10	"//! @def THE_MAX_CLIP_PLANES\n"
	11	"//! Specifies the length of array of clipping planes, which is 8 by default. Defined by Shader Manager.\n"
	12	"// #define THE_MAX_CLIP_PLANES 8\n"
ee5befae	13	"\n"
b17e5bae	14	"//! @def THE_NB_FRAG_OUTPUTS\n"
	15	"//! Specifies the length of array of Fragment Shader outputs, which is 1 by default. Defined by Shader Manager.\n"
	16	"// #define THE_NB_FRAG_OUTPUTS 1\n"
	17	"\n"
ee5befae	18	"// compatibility macros\n"
	19	"#if (__VERSION__ >= 130)\n"
	20	" #define THE_ATTRIBUTE in\n"
	21	" #define THE_SHADER_IN in\n"
	22	" #define THE_SHADER_OUT out\n"
	23	" #define THE_OUT out\n"
ff6665dc	24	" #define occTexture1D texture\n"
ee5befae	25	" #define occTexture2D texture\n"
ff6665dc	26	" #define occTexture3D texture\n"
67312b79	27	" #define occTextureCube texture\n"
67312b79	28	" #define occTextureCubeLod textureLod\n"
ee5befae	29	"#else\n"
	30	" #define THE_ATTRIBUTE attribute\n"
	31	" #define THE_SHADER_IN varying\n"
	32	" #define THE_SHADER_OUT varying\n"
	33	" #define THE_OUT\n"
ff6665dc	34	" #define occTexture1D texture1D\n"
ee5befae	35	" #define occTexture2D texture2D\n"
ff6665dc	36	" #define occTexture3D texture3D\n"
67312b79	37	" #define occTextureCube textureCube\n"
75642c14	38	" #if !defined(GL_ES) \|\| defined(textureCubeLod)\n"
	39	" #define occTextureCubeLod textureCubeLod\n"
	40	" #else // fallback\n"
	41	" #define occTextureCubeLod(theSampl,theCoord,theLod) textureCube(theSampl,theCoord)\n"
	42	" #endif\n"
ee5befae	43	"#endif\n"
	44	"\n"
	45	"#ifdef GL_ES\n"
67312b79	46	"#if (__VERSION__ >= 300)\n"
	47	" #define THE_PREC_ENUM highp // lowp should be enough for enums but triggers driver bugs\n"
	48	"#else\n"
	49	" #define THE_PREC_ENUM lowp\n"
	50	"#endif\n"
ee5befae	51	"#else\n"
	52	" #define THE_PREC_ENUM\n"
	53	"#endif\n"
	54	"\n"
	55	"// Vertex attributes\n"
	56	"#ifdef VERTEX_SHADER\n"
	57	" THE_ATTRIBUTE vec4 occVertex;\n"
	58	" THE_ATTRIBUTE vec3 occNormal;\n"
	59	" THE_ATTRIBUTE vec4 occTexCoord;\n"
	60	" THE_ATTRIBUTE vec4 occVertColor;\n"
8e0a2b19	61	"#elif defined(FRAGMENT_SHADER)\n"
	62	" #if (__VERSION__ >= 130)\n"
	63	" #ifdef OCC_ENABLE_draw_buffers\n"
b17e5bae	64	" out vec4 occFragColorArray[THE_NB_FRAG_OUTPUTS];\n"
	65	" #define occFragColorArrayAlias occFragColorArray\n"
	66	" #define occFragColor0 occFragColorArray[0]\n"
8e0a2b19	67	" #else\n"
b17e5bae	68	" out vec4 occFragColor0;\n"
8e0a2b19	69	" #endif\n"
177781da	70	" #else\n"
8e0a2b19	71	" #ifdef OCC_ENABLE_draw_buffers\n"
b17e5bae	72	" #define occFragColorArrayAlias gl_FragData\n"
b17e5bae	73	" #define occFragColor0 gl_FragData[0]\n"
8e0a2b19	74	" #else\n"
b17e5bae	75	" #define occFragColor0 gl_FragColor\n"
8e0a2b19	76	" #endif\n"
a1073ae2	77	" #endif\n"
b17e5bae	78	"\n"
	79	" #if (THE_NB_FRAG_OUTPUTS >= 2)\n"
	80	" #define occFragColor1 occFragColorArrayAlias[1]\n"
	81	" #else\n"
	82	" vec4 occFragColor1;\n"
	83	" #endif\n"
	84	" #if (THE_NB_FRAG_OUTPUTS >= 3)\n"
	85	" #define occFragColor2 occFragColorArrayAlias[2]\n"
	86	" #else\n"
	87	" vec4 occFragColor2;\n"
	88	" #endif\n"
	89	" #if (THE_NB_FRAG_OUTPUTS >= 4)\n"
	90	" #define occFragColor3 occFragColorArrayAlias[3]\n"
	91	" #else\n"
	92	" vec4 occFragColor3;\n"
	93	" #endif\n"
	94	"\n"
	95	" // Built-in outputs notation\n"
	96	" #define occFragColor occFragColor0\n"
	97	" #define occFragCoverage occFragColor1\n"
	98	"\n"
78c4e836	99	" #define occPeelDepth occFragColor0\n"
	100	" #define occPeelFrontColor occFragColor1\n"
	101	" #define occPeelBackColor occFragColor2\n"
	102	"\n"
	103	" //! Define the main Fragment Shader early return procedure.\n"
	104	" bool occFragEarlyReturn();\n"
	105	"\n"
b17e5bae	106	" //! Define the main Fragment Shader output - color value.\n"
b17e5bae	107	" void occSetFragColor (in vec4 theColor);\n"
ee5befae	108	"#endif\n"
ee5befae	109	"\n"
67312b79	110	"// Pi number definitions\n"
	111	"#define PI 3.141592654\n"
	112	"#define PI_2 6.283185307\n"
	113	"#define PI_DIV_2 1.570796327\n"
	114	"#define PI_DIV_3 1.047197551\n"
	115	"#define PI_DIV_4 0.785398163\n"
	116	"#define INV_PI 0.318309886\n"
	117	"#define INV_PI_2 0.159154943\n"
	118	"\n"
ee5befae	119	"// Matrix state\n"
	120	"uniform mat4 occWorldViewMatrix; //!< World-view matrix\n"
	121	"uniform mat4 occProjectionMatrix; //!< Projection matrix\n"
	122	"uniform mat4 occModelWorldMatrix; //!< Model-world matrix\n"
	123	"\n"
	124	"uniform mat4 occWorldViewMatrixInverse; //!< Inverse of the world-view matrix\n"
	125	"uniform mat4 occProjectionMatrixInverse; //!< Inverse of the projection matrix\n"
	126	"uniform mat4 occModelWorldMatrixInverse; //!< Inverse of the model-world matrix\n"
	127	"\n"
	128	"uniform mat4 occWorldViewMatrixTranspose; //!< Transpose of the world-view matrix\n"
	129	"uniform mat4 occProjectionMatrixTranspose; //!< Transpose of the projection matrix\n"
	130	"uniform mat4 occModelWorldMatrixTranspose; //!< Transpose of the model-world matrix\n"
	131	"\n"
	132	"uniform mat4 occWorldViewMatrixInverseTranspose; //!< Transpose of the inverse of the world-view matrix\n"
	133	"uniform mat4 occProjectionMatrixInverseTranspose; //!< Transpose of the inverse of the projection matrix\n"
	134	"uniform mat4 occModelWorldMatrixInverseTranspose; //!< Transpose of the inverse of the model-world matrix\n"
	135	"\n"
67312b79	136	"#if defined(THE_IS_PBR)\n"
	137	"uniform sampler2D occEnvLUT; //!< Environment Lookup Table\n"
	138	"uniform sampler2D occDiffIBLMapSHCoeffs; //!< Packed diffuse (irradiance) IBL map's spherical harmonics coefficients\n"
	139	"uniform samplerCube occSpecIBLMap; //!< Specular IBL map\n"
	140	"uniform int occNbSpecIBLLevels; //!< Number of mipmap levels used in occSpecIBLMap to store different roughness values maps\n"
	141	"\n"
	142	"vec3 occDiffIBLMap (in vec3 theNormal); //!< Unpacks spherical harmonics coefficients to diffuse IBL map's values\n"
	143	"#endif\n"
	144	"\n"
565baee6	145	"// light type enumeration (same as Graphic3d_TypeOfLightSource)\n"
ee5befae	146	"const int OccLightType_Direct = 1; //!< directional light source\n"
	147	"const int OccLightType_Point = 2; //!< isotropic point light source\n"
	148	"const int OccLightType_Spot = 3; //!< spot light source\n"
	149	"\n"
	150	"// Light sources\n"
	151	"uniform vec4 occLightAmbient; //!< Cumulative ambient color\n"
daf73ab7	152	"#if defined(THE_MAX_LIGHTS) && (THE_MAX_LIGHTS > 0)\n"
8f8fe4a9	153	"#if (THE_MAX_LIGHTS > 1)\n"
	154	" #define occLight_Index(theId) theId\n"
	155	"#else\n"
	156	" #define occLight_Index(theId) 0\n"
	157	"#endif\n"
ee5befae	158	"uniform THE_PREC_ENUM int occLightSourcesCount; //!< Total number of light sources\n"
565baee6	159	"\n"
565baee6	160	"//! Type of light source, int (see OccLightType enum).\n"
8f8fe4a9	161	"#define occLight_Type(theId) occLightSourcesTypes[occLight_Index(theId)]\n"
565baee6	162	"\n"
9504a30d	163	"//! Specular intensity (equals to diffuse), vec3.\n"
8f8fe4a9	164	"#define occLight_Specular(theId) occLightSources[occLight_Index(theId) * 4 + 0].rgb\n"
565baee6	165	"\n"
9504a30d	166	"//! Intensity of light source (>= 0), float.\n"
8f8fe4a9	167	"#define occLight_Intensity(theId) occLightSources[occLight_Index(theId) * 4 + 0].a\n"
565baee6	168	"\n"
37f80e16	169	"//! Is light a headlight, bool? DEPRECATED method.\n"
37f80e16	170	"#define occLight_IsHeadlight(theId) false\n"
565baee6	171	"\n"
37f80e16	172	"//! Position of specified light source or direction of directional light source, vec3.\n"
8f8fe4a9	173	"#define occLight_Position(theId) occLightSources[occLight_Index(theId) * 4 + 1].xyz\n"
9504a30d	174	"\n"
9504a30d	175	"//! Direction of specified spot light source, vec3.\n"
8f8fe4a9	176	"#define occLight_SpotDirection(theId) occLightSources[occLight_Index(theId) * 4 + 2].xyz\n"
565baee6	177	"\n"
88b312d3	178	"//! Range on which point light source (positional or spot) can affect (>= 0), float.\n"
8f8fe4a9	179	"#define occLight_Range(theId) occLightSources[occLight_Index(theId) * 4 + 2].w\n"
88b312d3	180	"\n"
565baee6	181	"//! Maximum spread angle of the spot light (in radians), float.\n"
8f8fe4a9	182	"#define occLight_SpotCutOff(theId) occLightSources[occLight_Index(theId) * 4 + 3].z\n"
565baee6	183	"\n"
565baee6	184	"//! Attenuation of the spot light intensity (from 0 to 1), float.\n"
8f8fe4a9	185	"#define occLight_SpotExponent(theId) occLightSources[occLight_Index(theId) * 4 + 3].w\n"
565baee6	186	"\n"
9504a30d	187	"#if !defined(THE_IS_PBR)\n"
9504a30d	188	"//! Diffuse intensity (equals to Specular), vec3.\n"
8f8fe4a9	189	"#define occLight_Diffuse(theId) occLightSources[occLight_Index(theId) * 4 + 0].rgb\n"
565baee6	190	"\n"
565baee6	191	"//! Const attenuation factor of positional light source, float.\n"
8f8fe4a9	192	"#define occLight_ConstAttenuation(theId) occLightSources[occLight_Index(theId) * 4 + 3].x\n"
565baee6	193	"\n"
565baee6	194	"//! Linear attenuation factor of positional light source, float.\n"
8f8fe4a9	195	"#define occLight_LinearAttenuation(theId) occLightSources[occLight_Index(theId) * 4 + 3].y\n"
daf73ab7	196	"#endif\n"
67312b79	197	"#endif\n"
67312b79	198	"\n"
72f6dc61	199	"#if defined(THE_IS_PBR)\n"
72f6dc61	200	"//! Converts roughness value from range [0, 1] to real value for calculations\n"
67312b79	201	"float occRoughness (in float theNormalizedRoughness);\n"
ee5befae	202	"\n"
72f6dc61	203	"// Front/back material properties accessors\n"
	204	"vec4 occPBRMaterial_Color(in bool theIsFront); //!< Base color of PBR material\n"
	205	"float occPBRMaterial_Metallic(in bool theIsFront); //!< Metallic coefficient\n"
	206	"float occPBRMaterial_NormalizedRoughness(in bool theIsFront); //!< Normalized roughness coefficient\n"
	207	"vec3 occPBRMaterial_Emission(in bool theIsFront); //!< Light intensity emitted by material\n"
	208	"float occPBRMaterial_IOR(in bool theIsFront); //!< Index of refraction\n"
941f6cae	209	"#define occMaterial_Emission occPBRMaterial_Emission\n"
941f6cae	210	"#define occMaterial_Color occPBRMaterial_Color\n"
67312b79	211	"#else\n"
941f6cae	212	"vec4 occMaterial_Diffuse(in bool theIsFront); //!< Diffuse reflection\n"
	213	"vec3 occMaterial_Specular(in bool theIsFront); //!< Specular reflection\n"
	214	"float occMaterial_Shininess(in bool theIsFront); //!< Specular exponent\n"
	215	"vec3 occMaterial_Ambient(in bool theIsFront); //!< Ambient reflection\n"
	216	"vec3 occMaterial_Emission(in bool theIsFront); //!< Emission color\n"
	217	"#define occMaterial_Color occMaterial_Diffuse\n"
67312b79	218	"#endif\n"
ee5befae	219	"\n"
737e9a8d	220	"#ifdef THE_HAS_DEFAULT_SAMPLER\n"
72f6dc61	221	"#define occActiveSampler occSampler0 //!< alias for backward compatibility\n"
	222	"#define occSamplerBaseColor occSampler0 //!< alias to a base color texture\n"
	223	"uniform sampler2D occSampler0; //!< current active sampler;\n"
	224	"#endif //! occSampler1, occSampler2,... should be defined in GLSL program body for multitexturing\n"
	225	"\n"
941f6cae	226	"#if defined(THE_HAS_TEXTURE_COLOR) && defined(FRAGMENT_SHADER)\n"
941f6cae	227	"#define occMaterialBaseColor(theIsFront, theTexCoord) (occMaterial_Color(theIsFront) * occTexture2D(occSamplerBaseColor, theTexCoord))\n"
72f6dc61	228	"#else\n"
941f6cae	229	"#define occMaterialBaseColor(theIsFront, theTexCoord) occMaterial_Color(theIsFront)\n"
72f6dc61	230	"#endif\n"
	231	"\n"
	232	"#if defined(THE_HAS_TEXTURE_OCCLUSION) && defined(FRAGMENT_SHADER)\n"
	233	"uniform sampler2D occSamplerOcclusion; //!< R occlusion texture sampler\n"
941f6cae	234	"#define occMaterialOcclusion(theColor, theTexCoord) theColor *= occTexture2D(occSamplerOcclusion, theTexCoord).r;\n"
72f6dc61	235	"#else\n"
941f6cae	236	"#define occMaterialOcclusion(theColor, theTexCoord)\n"
737e9a8d	237	"#endif\n"
72f6dc61	238	"\n"
	239	"#if defined(THE_HAS_TEXTURE_EMISSIVE) && defined(FRAGMENT_SHADER)\n"
	240	"uniform sampler2D occSamplerEmissive; //!< RGB emissive texture sampler\n"
941f6cae	241	"#define occMaterialEmission(theIsFront, theTexCoord) (occMaterial_Emission(theIsFront) * occTexture2D(occSamplerEmissive, theTexCoord).rgb)\n"
72f6dc61	242	"#else\n"
941f6cae	243	"#define occMaterialEmission(theIsFront, theTexCoord) occMaterial_Emission(theIsFront)\n"
72f6dc61	244	"#endif\n"
	245	"\n"
	246	"#if defined(THE_HAS_TEXTURE_NORMAL) && defined(FRAGMENT_SHADER)\n"
	247	"uniform sampler2D occSamplerNormal; //!< XYZ normal texture sampler with W==0 indicating no texture\n"
	248	"#define occTextureNormal(theTexCoord) occTexture2D(occSamplerNormal, theTexCoord)\n"
	249	"#else\n"
	250	"#define occTextureNormal(theTexCoord) vec4(0.0) // no normal map\n"
	251	"#endif\n"
	252	"\n"
	253	"#if defined(THE_HAS_TEXTURE_METALROUGHNESS) && defined(FRAGMENT_SHADER)\n"
	254	"uniform sampler2D occSamplerMetallicRoughness; //!< BG metallic-roughness texture sampler\n"
941f6cae	255	"#define occMaterialRoughness(theIsFront, theTexCoord) (occPBRMaterial_NormalizedRoughness(theIsFront) * occTexture2D(occSamplerMetallicRoughness, theTexCoord).g)\n"
941f6cae	256	"#define occMaterialMetallic(theIsFront, theTexCoord) (occPBRMaterial_Metallic(theIsFront) * occTexture2D(occSamplerMetallicRoughness, theTexCoord).b)\n"
72f6dc61	257	"#else\n"
941f6cae	258	"#define occMaterialRoughness(theIsFront, theTexCoord) occPBRMaterial_NormalizedRoughness(theIsFront)\n"
941f6cae	259	"#define occMaterialMetallic(theIsFront, theTexCoord) occPBRMaterial_Metallic(theIsFront)\n"
72f6dc61	260	"#endif\n"
72f6dc61	261	"\n"
ee5befae	262	"uniform vec4 occColor; //!< color value (in case of disabled lighting)\n"
	263	"uniform THE_PREC_ENUM int occDistinguishingMode; //!< Are front and back faces distinguished?\n"
	264	"uniform THE_PREC_ENUM int occTextureEnable; //!< Is texture enabled?\n"
ee5befae	265	"uniform vec4 occTexTrsf2d[2]; //!< 2D texture transformation parameters\n"
	266	"uniform float occPointSize; //!< point size\n"
	267	"\n"
a1073ae2	268	"//! Parameters of blended order-independent transparency rendering algorithm\n"
	269	"uniform int occOitOutput; //!< Enable bit for writing output color buffers for OIT (occFragColor, occFragCoverage)\n"
	270	"uniform float occOitDepthFactor; //!< Influence of the depth component to the coverage of the accumulated fragment\n"
c40eb6b9	271	"uniform float occAlphaCutoff; //!< alpha test cutoff value\n"
a1073ae2	272	"\n"
ee5befae	273	"//! Parameters of clipping planes\n"
daf73ab7	274	"#if defined(THE_MAX_CLIP_PLANES) && (THE_MAX_CLIP_PLANES > 0)\n"
ee5befae	275	"uniform vec4 occClipPlaneEquations[THE_MAX_CLIP_PLANES];\n"
25c35042	276	"uniform THE_PREC_ENUM int occClipPlaneChains[THE_MAX_CLIP_PLANES]; //! Indicating the number of planes in the Chain\n"
daf73ab7	277	"uniform THE_PREC_ENUM int occClipPlaneCount; //!< Total number of clip planes\n"
d95f5ce1	278	"#endif\n"
d95f5ce1	279	"//! @endfile Declarations.glsl\n";