mirror of
https://git.dev.opencascade.org/repos/occt.git
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565baee64b
Handled __EMSCRIPTEN__ macros to:
- Workaround atomics (__GCC_HAVE_SYNC_COMPARE_AND_SWAP_4 is undefined, but GCC atomics are provided).
- Suppress non-standard header <sys/signal.h> warning.
- Return OSD_LinuxREDHAT.
- Avoid inclusion of XLib headers.
- Skip fontconfig library.
- Enable EGL+GLES path (translated by Emscripten into WebGL).
- Skip eglCreatePbufferSurface() not implemented by Emscripten EGL.
Fixed Graphic3d_Vec4.hxx usage within Quantity_ColorRGBA.hxx.
OpenGl_ShaderManager::defaultGlslVersion() now prefers GLSL 300 es when WebGL 2.0 is available,
as there no any OpenGL ES greater than 3.0 emulation so far.
Shaders_Declarations.glsl - added workaround for GLSL compilation on WebGL 1.0
by defining Light properties accessors as macros instead of functions
('[]' : Index expression must be constant).
OpenGl_FrameBuffer::Init() - added workaround for initialization of GL_DEPTH24_STENCIL8
depth-stencil attachment on WebGL 1.0 + GL_WEBGL_depth_texture extension.
OpenGl_Context::Vec4FromQuantityColor() now considers myIsSRgbActive flag
to handle use case, when Immediate Layer is drawn directly into window buffer,
which is not sRGB-ready.
Added new sample - OCCT WebGL viewer.
189 lines
9.0 KiB
Plaintext
189 lines
9.0 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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"#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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"#endif\n"
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"\n"
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"#ifdef GL_ES\n"
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" #define THE_PREC_ENUM lowp // enumerations should fit into lowp range\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 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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"// 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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"// 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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"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[theId].x\n"
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"\n"
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"//! Is light a headlight, int?\n"
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"#define occLight_IsHeadlight(theId) occLightSourcesTypes[theId].y\n"
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"\n"
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"//! Specular intensity (equals to diffuse), vec4.\n"
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"#define occLight_Specular(theId) occLightSources[theId * 4 + 0]\n"
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"\n"
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"//! Position of specified light source, vec4.\n"
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"#define occLight_Position(theId) occLightSources[theId * 4 + 1]\n"
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"\n"
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"//! Direction of specified spot light source, vec4.\n"
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"#define occLight_SpotDirection(theId) occLightSources[theId * 4 + 2]\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[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[theId * 4 + 3].w\n"
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"\n"
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"//! Diffuse intensity (equals to Specular), vec4.\n"
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"#define occLight_Diffuse(theId) occLightSources[theId * 4 + 0]\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[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[theId * 4 + 3].y\n"
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"#endif\n"
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"\n"
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"// Front material properties accessors\n"
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"vec4 occFrontMaterial_Emission(void); //!< Emission color\n"
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"vec4 occFrontMaterial_Ambient(void); //!< Ambient reflection\n"
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"vec4 occFrontMaterial_Diffuse(void); //!< Diffuse reflection\n"
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"vec4 occFrontMaterial_Specular(void); //!< Specular reflection\n"
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"float occFrontMaterial_Shininess(void); //!< Specular exponent\n"
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"float occFrontMaterial_Transparency(void); //!< Transparency coefficient\n"
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"\n"
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"// Back material properties accessors\n"
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"vec4 occBackMaterial_Emission(void); //!< Emission color\n"
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"vec4 occBackMaterial_Ambient(void); //!< Ambient reflection\n"
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"vec4 occBackMaterial_Diffuse(void); //!< Diffuse reflection\n"
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"vec4 occBackMaterial_Specular(void); //!< Specular reflection\n"
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"float occBackMaterial_Shininess(void); //!< Specular exponent\n"
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"float occBackMaterial_Transparency(void); //!< Transparency coefficient\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\n"
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" //! occSampler1, occSampler2,... should be defined in GLSL program body for multitexturing\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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