[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"
  "  #define occTextureCubeLod textureCubeLod\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 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"
  "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[theId]\n"
  "\n"
  "//! Specular intensity (equals to diffuse), vec3.\n"
  "#define occLight_Specular(theId)          occLightSources[theId * 4 + 0].rgb\n"
  "\n"
  "//! Intensity of light source (>= 0), float.\n"
  "#define occLight_Intensity(theId)         occLightSources[theId * 4 + 0].a\n"
  "\n"
  "//! Is light a headlight, bool?\n"
  "#define occLight_IsHeadlight(theId)      (occLightSources[theId * 4 + 1].w > 0.5)\n"
  "\n"
  "//! Position of specified light source, vec3.\n"
  "#define occLight_Position(theId)          occLightSources[theId * 4 + 1].xyz\n"
  "\n"
  "//! Direction of specified spot light source, vec3.\n"
  "#define occLight_SpotDirection(theId)     occLightSources[theId * 4 + 2].xyz\n"
  "\n"
  "//! Maximum spread angle of the spot light (in radians), float.\n"
  "#define occLight_SpotCutOff(theId)        occLightSources[theId * 4 + 3].z\n"
  "\n"
  "//! Attenuation of the spot light intensity (from 0 to 1), float.\n"
  "#define occLight_SpotExponent(theId)      occLightSources[theId * 4 + 3].w\n"
  "\n"
  "#if !defined(THE_IS_PBR)\n"
  "//! Diffuse intensity (equals to Specular), vec3.\n"
  "#define occLight_Diffuse(theId)           occLightSources[theId * 4 + 0].rgb\n"
  "\n"
  "//! Const attenuation factor of positional light source, float.\n"
  "#define occLight_ConstAttenuation(theId)  occLightSources[theId * 4 + 3].x\n"
  "\n"
  "//! Linear attenuation factor of positional light source, float.\n"
  "#define occLight_LinearAttenuation(theId) occLightSources[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"
  "#else\n"
  "// Front material properties accessors\n"
  "vec4  occFrontMaterial_Emission(void);           //!< Emission color\n"
  "vec4  occFrontMaterial_Ambient(void);            //!< Ambient  reflection\n"
  "vec4  occFrontMaterial_Diffuse(void);            //!< Diffuse  reflection\n"
  "vec4  occFrontMaterial_Specular(void);           //!< Specular reflection\n"
  "float occFrontMaterial_Shininess(void);          //!< Specular exponent\n"
  "float occFrontMaterial_Transparency(void);       //!< Transparency coefficient\n"
  "\n"
  "// Back material properties accessors\n"
  "vec4  occBackMaterial_Emission(void);            //!< Emission color\n"
  "vec4  occBackMaterial_Ambient(void);             //!< Ambient  reflection\n"
  "vec4  occBackMaterial_Diffuse(void);             //!< Diffuse  reflection\n"
  "vec4  occBackMaterial_Specular(void);            //!< Specular reflection\n"
  "float occBackMaterial_Shininess(void);           //!< Specular exponent\n"
  "float occBackMaterial_Transparency(void);        //!< Transparency coefficient\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)\n"
  "#define occTextureColor(theMatColor, theTexCoord) (theMatColor * occTexture2D(occSamplerBaseColor, theTexCoord))\n"
  "#else\n"
  "#define occTextureColor(theMatColor, theTexCoord) theMatColor\n"
  "#endif\n"
  "\n"
  "#if defined(THE_HAS_TEXTURE_OCCLUSION) && defined(FRAGMENT_SHADER)\n"
  "uniform sampler2D occSamplerOcclusion;   //!< R occlusion texture sampler\n"
  "#define occTextureOcclusion(theColor, theTexCoord) theColor *= occTexture2D(occSamplerOcclusion, theTexCoord).r;\n"
  "#else\n"
  "#define occTextureOcclusion(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 occTextureEmissive(theMatEmis, theTexCoord) (theMatEmis * occTexture2D(occSamplerEmissive, theTexCoord).rgb)\n"
  "#else\n"
  "#define occTextureEmissive(theMatEmis, theTexCoord) theMatEmis\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 occTextureRoughness(theRoug, theTexCoord) (theRoug * occTexture2D(occSamplerMetallicRoughness, theTexCoord).g)\n"
  "#define occTextureMetallic(theMet,   theTexCoord) (theMet  * occTexture2D(occSamplerMetallicRoughness, theTexCoord).b)\n"
  "#else\n"
  "#define occTextureRoughness(theRoug, theTexCoord) theRoug\n"
  "#define occTextureMetallic(theMet,   theTexCoord) theMet\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"
67312b79	38	" #define occTextureCubeLod textureCubeLod\n"
ee5befae	39	"#endif\n"
	40	"\n"
	41	"#ifdef GL_ES\n"
67312b79	42	"#if (__VERSION__ >= 300)\n"
	43	" #define THE_PREC_ENUM highp // lowp should be enough for enums but triggers driver bugs\n"
	44	"#else\n"
	45	" #define THE_PREC_ENUM lowp\n"
	46	"#endif\n"
ee5befae	47	"#else\n"
	48	" #define THE_PREC_ENUM\n"
	49	"#endif\n"
	50	"\n"
	51	"// Vertex attributes\n"
	52	"#ifdef VERTEX_SHADER\n"
	53	" THE_ATTRIBUTE vec4 occVertex;\n"
	54	" THE_ATTRIBUTE vec3 occNormal;\n"
	55	" THE_ATTRIBUTE vec4 occTexCoord;\n"
	56	" THE_ATTRIBUTE vec4 occVertColor;\n"
8e0a2b19	57	"#elif defined(FRAGMENT_SHADER)\n"
	58	" #if (__VERSION__ >= 130)\n"
	59	" #ifdef OCC_ENABLE_draw_buffers\n"
b17e5bae	60	" out vec4 occFragColorArray[THE_NB_FRAG_OUTPUTS];\n"
	61	" #define occFragColorArrayAlias occFragColorArray\n"
	62	" #define occFragColor0 occFragColorArray[0]\n"
8e0a2b19	63	" #else\n"
b17e5bae	64	" out vec4 occFragColor0;\n"
8e0a2b19	65	" #endif\n"
177781da	66	" #else\n"
8e0a2b19	67	" #ifdef OCC_ENABLE_draw_buffers\n"
b17e5bae	68	" #define occFragColorArrayAlias gl_FragData\n"
b17e5bae	69	" #define occFragColor0 gl_FragData[0]\n"
8e0a2b19	70	" #else\n"
b17e5bae	71	" #define occFragColor0 gl_FragColor\n"
8e0a2b19	72	" #endif\n"
a1073ae2	73	" #endif\n"
b17e5bae	74	"\n"
	75	" #if (THE_NB_FRAG_OUTPUTS >= 2)\n"
	76	" #define occFragColor1 occFragColorArrayAlias[1]\n"
	77	" #else\n"
	78	" vec4 occFragColor1;\n"
	79	" #endif\n"
	80	" #if (THE_NB_FRAG_OUTPUTS >= 3)\n"
	81	" #define occFragColor2 occFragColorArrayAlias[2]\n"
	82	" #else\n"
	83	" vec4 occFragColor2;\n"
	84	" #endif\n"
	85	" #if (THE_NB_FRAG_OUTPUTS >= 4)\n"
	86	" #define occFragColor3 occFragColorArrayAlias[3]\n"
	87	" #else\n"
	88	" vec4 occFragColor3;\n"
	89	" #endif\n"
	90	"\n"
	91	" // Built-in outputs notation\n"
	92	" #define occFragColor occFragColor0\n"
	93	" #define occFragCoverage occFragColor1\n"
	94	"\n"
	95	" //! Define the main Fragment Shader output - color value.\n"
	96	" void occSetFragColor (in vec4 theColor);\n"
ee5befae	97	"#endif\n"
ee5befae	98	"\n"
67312b79	99	"// Pi number definitions\n"
	100	"#define PI 3.141592654\n"
	101	"#define PI_2 6.283185307\n"
	102	"#define PI_DIV_2 1.570796327\n"
	103	"#define PI_DIV_3 1.047197551\n"
	104	"#define PI_DIV_4 0.785398163\n"
	105	"#define INV_PI 0.318309886\n"
	106	"#define INV_PI_2 0.159154943\n"
	107	"\n"
ee5befae	108	"// Matrix state\n"
	109	"uniform mat4 occWorldViewMatrix; //!< World-view matrix\n"
	110	"uniform mat4 occProjectionMatrix; //!< Projection matrix\n"
	111	"uniform mat4 occModelWorldMatrix; //!< Model-world matrix\n"
	112	"\n"
	113	"uniform mat4 occWorldViewMatrixInverse; //!< Inverse of the world-view matrix\n"
	114	"uniform mat4 occProjectionMatrixInverse; //!< Inverse of the projection matrix\n"
	115	"uniform mat4 occModelWorldMatrixInverse; //!< Inverse of the model-world matrix\n"
	116	"\n"
	117	"uniform mat4 occWorldViewMatrixTranspose; //!< Transpose of the world-view matrix\n"
	118	"uniform mat4 occProjectionMatrixTranspose; //!< Transpose of the projection matrix\n"
	119	"uniform mat4 occModelWorldMatrixTranspose; //!< Transpose of the model-world matrix\n"
	120	"\n"
	121	"uniform mat4 occWorldViewMatrixInverseTranspose; //!< Transpose of the inverse of the world-view matrix\n"
	122	"uniform mat4 occProjectionMatrixInverseTranspose; //!< Transpose of the inverse of the projection matrix\n"
	123	"uniform mat4 occModelWorldMatrixInverseTranspose; //!< Transpose of the inverse of the model-world matrix\n"
	124	"\n"
67312b79	125	"#if defined(THE_IS_PBR)\n"
	126	"uniform sampler2D occEnvLUT; //!< Environment Lookup Table\n"
	127	"uniform sampler2D occDiffIBLMapSHCoeffs; //!< Packed diffuse (irradiance) IBL map's spherical harmonics coefficients\n"
	128	"uniform samplerCube occSpecIBLMap; //!< Specular IBL map\n"
	129	"uniform int occNbSpecIBLLevels; //!< Number of mipmap levels used in occSpecIBLMap to store different roughness values maps\n"
	130	"\n"
	131	"vec3 occDiffIBLMap (in vec3 theNormal); //!< Unpacks spherical harmonics coefficients to diffuse IBL map's values\n"
	132	"#endif\n"
	133	"\n"
565baee6	134	"// light type enumeration (same as Graphic3d_TypeOfLightSource)\n"
ee5befae	135	"const int OccLightType_Direct = 1; //!< directional light source\n"
	136	"const int OccLightType_Point = 2; //!< isotropic point light source\n"
	137	"const int OccLightType_Spot = 3; //!< spot light source\n"
	138	"\n"
	139	"// Light sources\n"
	140	"uniform vec4 occLightAmbient; //!< Cumulative ambient color\n"
daf73ab7	141	"#if defined(THE_MAX_LIGHTS) && (THE_MAX_LIGHTS > 0)\n"
ee5befae	142	"uniform THE_PREC_ENUM int occLightSourcesCount; //!< Total number of light sources\n"
565baee6	143	"\n"
565baee6	144	"//! Type of light source, int (see OccLightType enum).\n"
9504a30d	145	"#define occLight_Type(theId) occLightSourcesTypes[theId]\n"
565baee6	146	"\n"
9504a30d	147	"//! Specular intensity (equals to diffuse), vec3.\n"
9504a30d	148	"#define occLight_Specular(theId) occLightSources[theId * 4 + 0].rgb\n"
565baee6	149	"\n"
9504a30d	150	"//! Intensity of light source (>= 0), float.\n"
9504a30d	151	"#define occLight_Intensity(theId) occLightSources[theId * 4 + 0].a\n"
565baee6	152	"\n"
9504a30d	153	"//! Is light a headlight, bool?\n"
9504a30d	154	"#define occLight_IsHeadlight(theId) (occLightSources[theId * 4 + 1].w > 0.5)\n"
565baee6	155	"\n"
9504a30d	156	"//! Position of specified light source, vec3.\n"
	157	"#define occLight_Position(theId) occLightSources[theId * 4 + 1].xyz\n"
	158	"\n"
	159	"//! Direction of specified spot light source, vec3.\n"
	160	"#define occLight_SpotDirection(theId) occLightSources[theId * 4 + 2].xyz\n"
565baee6	161	"\n"
	162	"//! Maximum spread angle of the spot light (in radians), float.\n"
	163	"#define occLight_SpotCutOff(theId) occLightSources[theId * 4 + 3].z\n"
	164	"\n"
	165	"//! Attenuation of the spot light intensity (from 0 to 1), float.\n"
	166	"#define occLight_SpotExponent(theId) occLightSources[theId * 4 + 3].w\n"
	167	"\n"
9504a30d	168	"#if !defined(THE_IS_PBR)\n"
	169	"//! Diffuse intensity (equals to Specular), vec3.\n"
	170	"#define occLight_Diffuse(theId) occLightSources[theId * 4 + 0].rgb\n"
565baee6	171	"\n"
	172	"//! Const attenuation factor of positional light source, float.\n"
	173	"#define occLight_ConstAttenuation(theId) occLightSources[theId * 4 + 3].x\n"
	174	"\n"
	175	"//! Linear attenuation factor of positional light source, float.\n"
	176	"#define occLight_LinearAttenuation(theId) occLightSources[theId * 4 + 3].y\n"
daf73ab7	177	"#endif\n"
67312b79	178	"#endif\n"
67312b79	179	"\n"
72f6dc61	180	"#if defined(THE_IS_PBR)\n"
72f6dc61	181	"//! Converts roughness value from range [0, 1] to real value for calculations\n"
67312b79	182	"float occRoughness (in float theNormalizedRoughness);\n"
ee5befae	183	"\n"
72f6dc61	184	"// Front/back material properties accessors\n"
	185	"vec4 occPBRMaterial_Color(in bool theIsFront); //!< Base color of PBR material\n"
	186	"float occPBRMaterial_Metallic(in bool theIsFront); //!< Metallic coefficient\n"
	187	"float occPBRMaterial_NormalizedRoughness(in bool theIsFront); //!< Normalized roughness coefficient\n"
	188	"vec3 occPBRMaterial_Emission(in bool theIsFront); //!< Light intensity emitted by material\n"
	189	"float occPBRMaterial_IOR(in bool theIsFront); //!< Index of refraction\n"
67312b79	190	"#else\n"
72f6dc61	191	"// Front material properties accessors\n"
	192	"vec4 occFrontMaterial_Emission(void); //!< Emission color\n"
	193	"vec4 occFrontMaterial_Ambient(void); //!< Ambient reflection\n"
	194	"vec4 occFrontMaterial_Diffuse(void); //!< Diffuse reflection\n"
	195	"vec4 occFrontMaterial_Specular(void); //!< Specular reflection\n"
	196	"float occFrontMaterial_Shininess(void); //!< Specular exponent\n"
	197	"float occFrontMaterial_Transparency(void); //!< Transparency coefficient\n"
ee5befae	198	"\n"
ee5befae	199	"// Back material properties accessors\n"
67312b79	200	"vec4 occBackMaterial_Emission(void); //!< Emission color\n"
	201	"vec4 occBackMaterial_Ambient(void); //!< Ambient reflection\n"
	202	"vec4 occBackMaterial_Diffuse(void); //!< Diffuse reflection\n"
	203	"vec4 occBackMaterial_Specular(void); //!< Specular reflection\n"
	204	"float occBackMaterial_Shininess(void); //!< Specular exponent\n"
	205	"float occBackMaterial_Transparency(void); //!< Transparency coefficient\n"
67312b79	206	"#endif\n"
ee5befae	207	"\n"
737e9a8d	208	"#ifdef THE_HAS_DEFAULT_SAMPLER\n"
72f6dc61	209	"#define occActiveSampler occSampler0 //!< alias for backward compatibility\n"
	210	"#define occSamplerBaseColor occSampler0 //!< alias to a base color texture\n"
	211	"uniform sampler2D occSampler0; //!< current active sampler;\n"
	212	"#endif //! occSampler1, occSampler2,... should be defined in GLSL program body for multitexturing\n"
	213	"\n"
	214	"#if defined(THE_HAS_TEXTURE_COLOR)\n"
	215	"#define occTextureColor(theMatColor, theTexCoord) (theMatColor * occTexture2D(occSamplerBaseColor, theTexCoord))\n"
	216	"#else\n"
	217	"#define occTextureColor(theMatColor, theTexCoord) theMatColor\n"
	218	"#endif\n"
	219	"\n"
	220	"#if defined(THE_HAS_TEXTURE_OCCLUSION) && defined(FRAGMENT_SHADER)\n"
	221	"uniform sampler2D occSamplerOcclusion; //!< R occlusion texture sampler\n"
	222	"#define occTextureOcclusion(theColor, theTexCoord) theColor *= occTexture2D(occSamplerOcclusion, theTexCoord).r;\n"
	223	"#else\n"
	224	"#define occTextureOcclusion(theColor, theTexCoord)\n"
737e9a8d	225	"#endif\n"
72f6dc61	226	"\n"
	227	"#if defined(THE_HAS_TEXTURE_EMISSIVE) && defined(FRAGMENT_SHADER)\n"
	228	"uniform sampler2D occSamplerEmissive; //!< RGB emissive texture sampler\n"
	229	"#define occTextureEmissive(theMatEmis, theTexCoord) (theMatEmis * occTexture2D(occSamplerEmissive, theTexCoord).rgb)\n"
	230	"#else\n"
	231	"#define occTextureEmissive(theMatEmis, theTexCoord) theMatEmis\n"
	232	"#endif\n"
	233	"\n"
	234	"#if defined(THE_HAS_TEXTURE_NORMAL) && defined(FRAGMENT_SHADER)\n"
	235	"uniform sampler2D occSamplerNormal; //!< XYZ normal texture sampler with W==0 indicating no texture\n"
	236	"#define occTextureNormal(theTexCoord) occTexture2D(occSamplerNormal, theTexCoord)\n"
	237	"#else\n"
	238	"#define occTextureNormal(theTexCoord) vec4(0.0) // no normal map\n"
	239	"#endif\n"
	240	"\n"
	241	"#if defined(THE_HAS_TEXTURE_METALROUGHNESS) && defined(FRAGMENT_SHADER)\n"
	242	"uniform sampler2D occSamplerMetallicRoughness; //!< BG metallic-roughness texture sampler\n"
	243	"#define occTextureRoughness(theRoug, theTexCoord) (theRoug * occTexture2D(occSamplerMetallicRoughness, theTexCoord).g)\n"
	244	"#define occTextureMetallic(theMet, theTexCoord) (theMet * occTexture2D(occSamplerMetallicRoughness, theTexCoord).b)\n"
	245	"#else\n"
	246	"#define occTextureRoughness(theRoug, theTexCoord) theRoug\n"
	247	"#define occTextureMetallic(theMet, theTexCoord) theMet\n"
	248	"#endif\n"
	249	"\n"
ee5befae	250	"uniform vec4 occColor; //!< color value (in case of disabled lighting)\n"
	251	"uniform THE_PREC_ENUM int occDistinguishingMode; //!< Are front and back faces distinguished?\n"
	252	"uniform THE_PREC_ENUM int occTextureEnable; //!< Is texture enabled?\n"
ee5befae	253	"uniform vec4 occTexTrsf2d[2]; //!< 2D texture transformation parameters\n"
	254	"uniform float occPointSize; //!< point size\n"
	255	"\n"
a1073ae2	256	"//! Parameters of blended order-independent transparency rendering algorithm\n"
	257	"uniform int occOitOutput; //!< Enable bit for writing output color buffers for OIT (occFragColor, occFragCoverage)\n"
	258	"uniform float occOitDepthFactor; //!< Influence of the depth component to the coverage of the accumulated fragment\n"
c40eb6b9	259	"uniform float occAlphaCutoff; //!< alpha test cutoff value\n"
a1073ae2	260	"\n"
ee5befae	261	"//! Parameters of clipping planes\n"
daf73ab7	262	"#if defined(THE_MAX_CLIP_PLANES) && (THE_MAX_CLIP_PLANES > 0)\n"
ee5befae	263	"uniform vec4 occClipPlaneEquations[THE_MAX_CLIP_PLANES];\n"
25c35042	264	"uniform THE_PREC_ENUM int occClipPlaneChains[THE_MAX_CLIP_PLANES]; //! Indicating the number of planes in the Chain\n"
daf73ab7	265	"uniform THE_PREC_ENUM int occClipPlaneCount; //!< Total number of clip planes\n"
d95f5ce1	266	"#endif\n"
d95f5ce1	267	"//! @endfile Declarations.glsl\n";