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941f6cae55
Graphic3d_ShaderManager::stdComputeLighting() - implementation has been adjusted for better consistency between PBR / non-PBR. OpenGl_Material definition has been modified to join Front/Back pair into a single uniform variable. Common material definition now occupies 4x2 vec4 instead of 5x2 vec4. Getters of Common material properties within Declarations.glsl have been renamed to match PBR material syntax (e.g. take IsFront flag as function argument). Auxliary macros (like occTextureColor()) has been renamed (like occMaterialBaseColor()) and adjusted to return material property directly instead of taking it as argument.
280 lines
14 KiB
Plaintext
280 lines
14 KiB
Plaintext
// This file has been automatically generated from resource file src/Shaders/Declarations.glsl
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static const char Shaders_Declarations_glsl[] =
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"\n"
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"//! @file Declarations.glsl includes definition of common uniform variables in OCCT GLSL programs\n"
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"//! @def THE_MAX_LIGHTS\n"
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"//! Specifies the length of array of lights, which is 8 by default. Defined by Shader Manager.\n"
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"// #define THE_MAX_LIGHTS 8\n"
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"\n"
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"//! @def THE_MAX_CLIP_PLANES\n"
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"//! Specifies the length of array of clipping planes, which is 8 by default. Defined by Shader Manager.\n"
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"// #define THE_MAX_CLIP_PLANES 8\n"
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"\n"
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"//! @def THE_NB_FRAG_OUTPUTS\n"
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"//! Specifies the length of array of Fragment Shader outputs, which is 1 by default. Defined by Shader Manager.\n"
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"// #define THE_NB_FRAG_OUTPUTS 1\n"
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"\n"
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"// compatibility macros\n"
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"#if (__VERSION__ >= 130)\n"
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" #define THE_ATTRIBUTE in\n"
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" #define THE_SHADER_IN in\n"
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" #define THE_SHADER_OUT out\n"
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" #define THE_OUT out\n"
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" #define occTexture1D texture\n"
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" #define occTexture2D texture\n"
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" #define occTexture3D texture\n"
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" #define occTextureCube texture\n"
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" #define occTextureCubeLod textureLod\n"
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"#else\n"
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" #define THE_ATTRIBUTE attribute\n"
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" #define THE_SHADER_IN varying\n"
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" #define THE_SHADER_OUT varying\n"
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" #define THE_OUT\n"
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" #define occTexture1D texture1D\n"
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" #define occTexture2D texture2D\n"
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" #define occTexture3D texture3D\n"
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" #define occTextureCube textureCube\n"
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" #if !defined(GL_ES) || defined(textureCubeLod)\n"
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" #define occTextureCubeLod textureCubeLod\n"
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" #else // fallback\n"
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" #define occTextureCubeLod(theSampl,theCoord,theLod) textureCube(theSampl,theCoord)\n"
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" #endif\n"
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"#endif\n"
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"\n"
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"#ifdef GL_ES\n"
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"#if (__VERSION__ >= 300)\n"
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" #define THE_PREC_ENUM highp // lowp should be enough for enums but triggers driver bugs\n"
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"#else\n"
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" #define THE_PREC_ENUM lowp\n"
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"#endif\n"
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"#else\n"
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" #define THE_PREC_ENUM\n"
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"#endif\n"
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"\n"
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"// Vertex attributes\n"
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"#ifdef VERTEX_SHADER\n"
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" THE_ATTRIBUTE vec4 occVertex;\n"
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" THE_ATTRIBUTE vec3 occNormal;\n"
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" THE_ATTRIBUTE vec4 occTexCoord;\n"
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" THE_ATTRIBUTE vec4 occVertColor;\n"
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"#elif defined(FRAGMENT_SHADER)\n"
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" #if (__VERSION__ >= 130)\n"
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" #ifdef OCC_ENABLE_draw_buffers\n"
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" out vec4 occFragColorArray[THE_NB_FRAG_OUTPUTS];\n"
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" #define occFragColorArrayAlias occFragColorArray\n"
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" #define occFragColor0 occFragColorArray[0]\n"
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" #else\n"
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" out vec4 occFragColor0;\n"
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" #endif\n"
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" #else\n"
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" #ifdef OCC_ENABLE_draw_buffers\n"
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" #define occFragColorArrayAlias gl_FragData\n"
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" #define occFragColor0 gl_FragData[0]\n"
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" #else\n"
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" #define occFragColor0 gl_FragColor\n"
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" #endif\n"
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" #endif\n"
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"\n"
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" #if (THE_NB_FRAG_OUTPUTS >= 2)\n"
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" #define occFragColor1 occFragColorArrayAlias[1]\n"
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" #else\n"
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" vec4 occFragColor1;\n"
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" #endif\n"
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" #if (THE_NB_FRAG_OUTPUTS >= 3)\n"
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" #define occFragColor2 occFragColorArrayAlias[2]\n"
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" #else\n"
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" vec4 occFragColor2;\n"
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" #endif\n"
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" #if (THE_NB_FRAG_OUTPUTS >= 4)\n"
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" #define occFragColor3 occFragColorArrayAlias[3]\n"
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" #else\n"
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" vec4 occFragColor3;\n"
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" #endif\n"
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"\n"
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" // Built-in outputs notation\n"
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" #define occFragColor occFragColor0\n"
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" #define occFragCoverage occFragColor1\n"
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"\n"
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" #define occPeelDepth occFragColor0\n"
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" #define occPeelFrontColor occFragColor1\n"
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" #define occPeelBackColor occFragColor2\n"
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"\n"
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" //! Define the main Fragment Shader early return procedure.\n"
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" bool occFragEarlyReturn();\n"
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"\n"
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" //! Define the main Fragment Shader output - color value.\n"
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" void occSetFragColor (in vec4 theColor);\n"
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"#endif\n"
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"\n"
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"// Pi number definitions\n"
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"#define PI 3.141592654\n"
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"#define PI_2 6.283185307\n"
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"#define PI_DIV_2 1.570796327\n"
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"#define PI_DIV_3 1.047197551\n"
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"#define PI_DIV_4 0.785398163\n"
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"#define INV_PI 0.318309886\n"
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"#define INV_PI_2 0.159154943\n"
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"\n"
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"// Matrix state\n"
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"uniform mat4 occWorldViewMatrix; //!< World-view matrix\n"
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"uniform mat4 occProjectionMatrix; //!< Projection matrix\n"
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"uniform mat4 occModelWorldMatrix; //!< Model-world matrix\n"
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"\n"
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"uniform mat4 occWorldViewMatrixInverse; //!< Inverse of the world-view matrix\n"
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"uniform mat4 occProjectionMatrixInverse; //!< Inverse of the projection matrix\n"
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"uniform mat4 occModelWorldMatrixInverse; //!< Inverse of the model-world matrix\n"
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"\n"
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"uniform mat4 occWorldViewMatrixTranspose; //!< Transpose of the world-view matrix\n"
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"uniform mat4 occProjectionMatrixTranspose; //!< Transpose of the projection matrix\n"
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"uniform mat4 occModelWorldMatrixTranspose; //!< Transpose of the model-world matrix\n"
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"\n"
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"uniform mat4 occWorldViewMatrixInverseTranspose; //!< Transpose of the inverse of the world-view matrix\n"
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"uniform mat4 occProjectionMatrixInverseTranspose; //!< Transpose of the inverse of the projection matrix\n"
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"uniform mat4 occModelWorldMatrixInverseTranspose; //!< Transpose of the inverse of the model-world matrix\n"
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"\n"
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"#if defined(THE_IS_PBR)\n"
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"uniform sampler2D occEnvLUT; //!< Environment Lookup Table\n"
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"uniform sampler2D occDiffIBLMapSHCoeffs; //!< Packed diffuse (irradiance) IBL map's spherical harmonics coefficients\n"
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"uniform samplerCube occSpecIBLMap; //!< Specular IBL map\n"
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"uniform int occNbSpecIBLLevels; //!< Number of mipmap levels used in occSpecIBLMap to store different roughness values maps\n"
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"\n"
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"vec3 occDiffIBLMap (in vec3 theNormal); //!< Unpacks spherical harmonics coefficients to diffuse IBL map's values\n"
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"#endif\n"
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"\n"
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"// light type enumeration (same as Graphic3d_TypeOfLightSource)\n"
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"const int OccLightType_Direct = 1; //!< directional light source\n"
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"const int OccLightType_Point = 2; //!< isotropic point light source\n"
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"const int OccLightType_Spot = 3; //!< spot light source\n"
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"\n"
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"// Light sources\n"
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"uniform vec4 occLightAmbient; //!< Cumulative ambient color\n"
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"#if defined(THE_MAX_LIGHTS) && (THE_MAX_LIGHTS > 0)\n"
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"#if (THE_MAX_LIGHTS > 1)\n"
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" #define occLight_Index(theId) theId\n"
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"#else\n"
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" #define occLight_Index(theId) 0\n"
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"#endif\n"
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"uniform THE_PREC_ENUM int occLightSourcesCount; //!< Total number of light sources\n"
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"\n"
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"//! Type of light source, int (see OccLightType enum).\n"
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"#define occLight_Type(theId) occLightSourcesTypes[occLight_Index(theId)]\n"
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"\n"
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"//! Specular intensity (equals to diffuse), vec3.\n"
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"#define occLight_Specular(theId) occLightSources[occLight_Index(theId) * 4 + 0].rgb\n"
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"\n"
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"//! Intensity of light source (>= 0), float.\n"
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"#define occLight_Intensity(theId) occLightSources[occLight_Index(theId) * 4 + 0].a\n"
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"\n"
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"//! Is light a headlight, bool? DEPRECATED method.\n"
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"#define occLight_IsHeadlight(theId) false\n"
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"\n"
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"//! Position of specified light source or direction of directional light source, vec3.\n"
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"#define occLight_Position(theId) occLightSources[occLight_Index(theId) * 4 + 1].xyz\n"
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"\n"
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"//! Direction of specified spot light source, vec3.\n"
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"#define occLight_SpotDirection(theId) occLightSources[occLight_Index(theId) * 4 + 2].xyz\n"
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"\n"
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"//! Range on which point light source (positional or spot) can affect (>= 0), float.\n"
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"#define occLight_Range(theId) occLightSources[occLight_Index(theId) * 4 + 2].w\n"
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"\n"
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"//! Maximum spread angle of the spot light (in radians), float.\n"
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"#define occLight_SpotCutOff(theId) occLightSources[occLight_Index(theId) * 4 + 3].z\n"
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"\n"
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"//! Attenuation of the spot light intensity (from 0 to 1), float.\n"
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"#define occLight_SpotExponent(theId) occLightSources[occLight_Index(theId) * 4 + 3].w\n"
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"\n"
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"#if !defined(THE_IS_PBR)\n"
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"//! Diffuse intensity (equals to Specular), vec3.\n"
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"#define occLight_Diffuse(theId) occLightSources[occLight_Index(theId) * 4 + 0].rgb\n"
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"\n"
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"//! Const attenuation factor of positional light source, float.\n"
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"#define occLight_ConstAttenuation(theId) occLightSources[occLight_Index(theId) * 4 + 3].x\n"
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"\n"
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"//! Linear attenuation factor of positional light source, float.\n"
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"#define occLight_LinearAttenuation(theId) occLightSources[occLight_Index(theId) * 4 + 3].y\n"
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"#endif\n"
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"#endif\n"
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"\n"
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"#if defined(THE_IS_PBR)\n"
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"//! Converts roughness value from range [0, 1] to real value for calculations\n"
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"float occRoughness (in float theNormalizedRoughness);\n"
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"\n"
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"// Front/back material properties accessors\n"
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"vec4 occPBRMaterial_Color(in bool theIsFront); //!< Base color of PBR material\n"
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"float occPBRMaterial_Metallic(in bool theIsFront); //!< Metallic coefficient\n"
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"float occPBRMaterial_NormalizedRoughness(in bool theIsFront); //!< Normalized roughness coefficient\n"
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"vec3 occPBRMaterial_Emission(in bool theIsFront); //!< Light intensity emitted by material\n"
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"float occPBRMaterial_IOR(in bool theIsFront); //!< Index of refraction\n"
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"#define occMaterial_Emission occPBRMaterial_Emission\n"
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"#define occMaterial_Color occPBRMaterial_Color\n"
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"#else\n"
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"vec4 occMaterial_Diffuse(in bool theIsFront); //!< Diffuse reflection\n"
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"vec3 occMaterial_Specular(in bool theIsFront); //!< Specular reflection\n"
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"float occMaterial_Shininess(in bool theIsFront); //!< Specular exponent\n"
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"vec3 occMaterial_Ambient(in bool theIsFront); //!< Ambient reflection\n"
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"vec3 occMaterial_Emission(in bool theIsFront); //!< Emission color\n"
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"#define occMaterial_Color occMaterial_Diffuse\n"
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"#endif\n"
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"\n"
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"#ifdef THE_HAS_DEFAULT_SAMPLER\n"
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"#define occActiveSampler occSampler0 //!< alias for backward compatibility\n"
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"#define occSamplerBaseColor occSampler0 //!< alias to a base color texture\n"
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"uniform sampler2D occSampler0; //!< current active sampler;\n"
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"#endif //! occSampler1, occSampler2,... should be defined in GLSL program body for multitexturing\n"
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"\n"
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"#if defined(THE_HAS_TEXTURE_COLOR) && defined(FRAGMENT_SHADER)\n"
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"#define occMaterialBaseColor(theIsFront, theTexCoord) (occMaterial_Color(theIsFront) * occTexture2D(occSamplerBaseColor, theTexCoord))\n"
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"#else\n"
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"#define occMaterialBaseColor(theIsFront, theTexCoord) occMaterial_Color(theIsFront)\n"
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"#endif\n"
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"\n"
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"#if defined(THE_HAS_TEXTURE_OCCLUSION) && defined(FRAGMENT_SHADER)\n"
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"uniform sampler2D occSamplerOcclusion; //!< R occlusion texture sampler\n"
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"#define occMaterialOcclusion(theColor, theTexCoord) theColor *= occTexture2D(occSamplerOcclusion, theTexCoord).r;\n"
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"#else\n"
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"#define occMaterialOcclusion(theColor, theTexCoord)\n"
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"#endif\n"
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"\n"
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"#if defined(THE_HAS_TEXTURE_EMISSIVE) && defined(FRAGMENT_SHADER)\n"
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"uniform sampler2D occSamplerEmissive; //!< RGB emissive texture sampler\n"
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"#define occMaterialEmission(theIsFront, theTexCoord) (occMaterial_Emission(theIsFront) * occTexture2D(occSamplerEmissive, theTexCoord).rgb)\n"
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"#else\n"
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"#define occMaterialEmission(theIsFront, theTexCoord) occMaterial_Emission(theIsFront)\n"
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"#endif\n"
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"\n"
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"#if defined(THE_HAS_TEXTURE_NORMAL) && defined(FRAGMENT_SHADER)\n"
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"uniform sampler2D occSamplerNormal; //!< XYZ normal texture sampler with W==0 indicating no texture\n"
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"#define occTextureNormal(theTexCoord) occTexture2D(occSamplerNormal, theTexCoord)\n"
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"#else\n"
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"#define occTextureNormal(theTexCoord) vec4(0.0) // no normal map\n"
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"#endif\n"
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"\n"
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"#if defined(THE_HAS_TEXTURE_METALROUGHNESS) && defined(FRAGMENT_SHADER)\n"
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"uniform sampler2D occSamplerMetallicRoughness; //!< BG metallic-roughness texture sampler\n"
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"#define occMaterialRoughness(theIsFront, theTexCoord) (occPBRMaterial_NormalizedRoughness(theIsFront) * occTexture2D(occSamplerMetallicRoughness, theTexCoord).g)\n"
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"#define occMaterialMetallic(theIsFront, theTexCoord) (occPBRMaterial_Metallic(theIsFront) * occTexture2D(occSamplerMetallicRoughness, theTexCoord).b)\n"
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"#else\n"
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"#define occMaterialRoughness(theIsFront, theTexCoord) occPBRMaterial_NormalizedRoughness(theIsFront)\n"
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"#define occMaterialMetallic(theIsFront, theTexCoord) occPBRMaterial_Metallic(theIsFront)\n"
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"#endif\n"
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"\n"
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"uniform vec4 occColor; //!< color value (in case of disabled lighting)\n"
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"uniform THE_PREC_ENUM int occDistinguishingMode; //!< Are front and back faces distinguished?\n"
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"uniform THE_PREC_ENUM int occTextureEnable; //!< Is texture enabled?\n"
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"uniform vec4 occTexTrsf2d[2]; //!< 2D texture transformation parameters\n"
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"uniform float occPointSize; //!< point size\n"
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"\n"
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"//! Parameters of blended order-independent transparency rendering algorithm\n"
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"uniform int occOitOutput; //!< Enable bit for writing output color buffers for OIT (occFragColor, occFragCoverage)\n"
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"uniform float occOitDepthFactor; //!< Influence of the depth component to the coverage of the accumulated fragment\n"
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"uniform float occAlphaCutoff; //!< alpha test cutoff value\n"
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"\n"
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"//! Parameters of clipping planes\n"
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"#if defined(THE_MAX_CLIP_PLANES) && (THE_MAX_CLIP_PLANES > 0)\n"
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"uniform vec4 occClipPlaneEquations[THE_MAX_CLIP_PLANES];\n"
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"uniform THE_PREC_ENUM int occClipPlaneChains[THE_MAX_CLIP_PLANES]; //! Indicating the number of planes in the Chain\n"
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"uniform THE_PREC_ENUM int occClipPlaneCount; //!< Total number of clip planes\n"
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"#endif\n"
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"//! @endfile Declarations.glsl\n";
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