mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-05-21 10:55:33 +03:00
cc8cbabe5c
Graphic3d_AspectFillArea3d now stores array of textures. Graphic3d_TextureParams stores texture unit for mapping texture. OpenGl_Context::BindTextures() - context now manages the set of active textures. Related code has been removed from OpenGl_Workspace. OpenGl_Sampler has been extended to hold texture parameters structure. OpenGl_Texture now holds OpenGl_Sampler instance as class field. OpenGl_Texture inherits new class OpenGl_NamedResource and holds texture identifier used for sharing resource in OpenGl_Context. OpenGl_RaytraceGeometry now creates bindless textures taking Sampler object directly from OpenGl_Texture. OpenGl_Context::BindTextures() automatically recreates immutable Sampler Object on texture parameters change. Declared new structure OpenGl_ArbSamplerObject for platform-neutral usage of related functionality. Related functions are now loaded within OpenGL ES 3.0+. Declarations.glsl - occActiveSampler has been renamed to occSampler0 with aliases occSamplerBaseColor (main) and occActiveSampler (for compatibility). Additional texture samplers should be declared explicitly within specific GLSL program as occSampler1, occSampler2, etc. AIS_Shape and AIS_ColoredShape now computes Shaded presentation with UV coordinates if texture mapping is enabled in Drawer. vshaderprog now accepts Shader source code as parameter.
138 lines
6.6 KiB
GLSL
138 lines
6.6 KiB
GLSL
// Created on: 2013-10-10
|
|
// Created by: Denis BOGOLEPOV
|
|
// Copyright (c) 2013-2014 OPEN CASCADE SAS
|
|
//
|
|
// This file is part of Open CASCADE Technology software library.
|
|
//
|
|
// This library is free software; you can redistribute it and/or modify it under
|
|
// the terms of the GNU Lesser General Public License version 2.1 as published
|
|
// by the Free Software Foundation, with special exception defined in the file
|
|
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
|
|
// distribution for complete text of the license and disclaimer of any warranty.
|
|
//
|
|
// Alternatively, this file may be used under the terms of Open CASCADE
|
|
// commercial license or contractual agreement.
|
|
|
|
// This files includes definition of common uniform variables in OCCT GLSL programs
|
|
|
|
#define THE_MAX_LIGHTS 8
|
|
#define THE_MAX_CLIP_PLANES 8
|
|
|
|
// compatibility macros
|
|
#if (__VERSION__ >= 130)
|
|
#define THE_ATTRIBUTE in
|
|
#define THE_SHADER_IN in
|
|
#define THE_SHADER_OUT out
|
|
#define THE_OUT out
|
|
#define occTexture1D texture
|
|
#define occTexture2D texture
|
|
#define occTexture3D texture
|
|
#else
|
|
#define THE_ATTRIBUTE attribute
|
|
#define THE_SHADER_IN varying
|
|
#define THE_SHADER_OUT varying
|
|
#define THE_OUT
|
|
#define occTexture1D texture1D
|
|
#define occTexture2D texture2D
|
|
#define occTexture3D texture3D
|
|
#endif
|
|
|
|
#ifdef GL_ES
|
|
#define THE_PREC_ENUM lowp // enumerations should fit into lowp range
|
|
#else
|
|
#define THE_PREC_ENUM
|
|
#endif
|
|
|
|
// Vertex attributes
|
|
#ifdef VERTEX_SHADER
|
|
THE_ATTRIBUTE vec4 occVertex;
|
|
THE_ATTRIBUTE vec3 occNormal;
|
|
THE_ATTRIBUTE vec4 occTexCoord;
|
|
THE_ATTRIBUTE vec4 occVertColor;
|
|
#elif (__VERSION__ >= 130)
|
|
#ifdef OCC_ENABLE_draw_buffers
|
|
out vec4 occFragColorArray[2];
|
|
#define occFragColor occFragColorArray[0]
|
|
#define occFragCoverage occFragColorArray[1]
|
|
#else
|
|
out vec4 occFragColor;
|
|
#endif
|
|
#else
|
|
#ifdef OCC_ENABLE_draw_buffers
|
|
#define occFragColor gl_FragData[0]
|
|
#define occFragCoverage gl_FragData[1]
|
|
#else
|
|
#define occFragColor gl_FragColor
|
|
#endif
|
|
#endif
|
|
|
|
// Matrix state
|
|
uniform mat4 occWorldViewMatrix; //!< World-view matrix
|
|
uniform mat4 occProjectionMatrix; //!< Projection matrix
|
|
uniform mat4 occModelWorldMatrix; //!< Model-world matrix
|
|
|
|
uniform mat4 occWorldViewMatrixInverse; //!< Inverse of the world-view matrix
|
|
uniform mat4 occProjectionMatrixInverse; //!< Inverse of the projection matrix
|
|
uniform mat4 occModelWorldMatrixInverse; //!< Inverse of the model-world matrix
|
|
|
|
uniform mat4 occWorldViewMatrixTranspose; //!< Transpose of the world-view matrix
|
|
uniform mat4 occProjectionMatrixTranspose; //!< Transpose of the projection matrix
|
|
uniform mat4 occModelWorldMatrixTranspose; //!< Transpose of the model-world matrix
|
|
|
|
uniform mat4 occWorldViewMatrixInverseTranspose; //!< Transpose of the inverse of the world-view matrix
|
|
uniform mat4 occProjectionMatrixInverseTranspose; //!< Transpose of the inverse of the projection matrix
|
|
uniform mat4 occModelWorldMatrixInverseTranspose; //!< Transpose of the inverse of the model-world matrix
|
|
|
|
// light type enumeration
|
|
const int OccLightType_Direct = 1; //!< directional light source
|
|
const int OccLightType_Point = 2; //!< isotropic point light source
|
|
const int OccLightType_Spot = 3; //!< spot light source
|
|
|
|
// Light sources
|
|
uniform vec4 occLightAmbient; //!< Cumulative ambient color
|
|
uniform THE_PREC_ENUM int occLightSourcesCount; //!< Total number of light sources
|
|
int occLight_Type (in int theId); //!< Type of light source
|
|
int occLight_IsHeadlight (in int theId); //!< Is light a headlight?
|
|
vec4 occLight_Diffuse (in int theId); //!< Diffuse intensity for specified light source
|
|
vec4 occLight_Specular (in int theId); //!< Specular intensity (currently - equals to diffuse intencity)
|
|
vec4 occLight_Position (in int theId); //!< Position of specified light source
|
|
vec4 occLight_SpotDirection (in int theId); //!< Direction of specified spot light source
|
|
float occLight_ConstAttenuation (in int theId); //!< Const attenuation factor of positional light source
|
|
float occLight_LinearAttenuation (in int theId); //!< Linear attenuation factor of positional light source
|
|
float occLight_SpotCutOff (in int theId); //!< Maximum spread angle of the spot light (in radians)
|
|
float occLight_SpotExponent (in int theId); //!< Attenuation of the spot light intensity (from 0 to 1)
|
|
|
|
// Front material properties accessors
|
|
vec4 occFrontMaterial_Emission(void); //!< Emission color
|
|
vec4 occFrontMaterial_Ambient(void); //!< Ambient reflection
|
|
vec4 occFrontMaterial_Diffuse(void); //!< Diffuse reflection
|
|
vec4 occFrontMaterial_Specular(void); //!< Specular reflection
|
|
float occFrontMaterial_Shininess(void); //!< Specular exponent
|
|
float occFrontMaterial_Transparency(void); //!< Transparency coefficient
|
|
|
|
// Back material properties accessors
|
|
vec4 occBackMaterial_Emission(void); //!< Emission color
|
|
vec4 occBackMaterial_Ambient(void); //!< Ambient reflection
|
|
vec4 occBackMaterial_Diffuse(void); //!< Diffuse reflection
|
|
vec4 occBackMaterial_Specular(void); //!< Specular reflection
|
|
float occBackMaterial_Shininess(void); //!< Specular exponent
|
|
float occBackMaterial_Transparency(void); //!< Transparency coefficient
|
|
|
|
#define occActiveSampler occSampler0 //!< alias for backward compatibility
|
|
#define occSamplerBaseColor occSampler0 //!< alias to a base color texture
|
|
uniform sampler2D occSampler0; //!< current active sampler;
|
|
//! occSampler1, occSampler2,... should be defined in GLSL program body for multitexturing
|
|
uniform vec4 occColor; //!< color value (in case of disabled lighting)
|
|
uniform THE_PREC_ENUM int occDistinguishingMode; //!< Are front and back faces distinguished?
|
|
uniform THE_PREC_ENUM int occTextureEnable; //!< Is texture enabled?
|
|
uniform vec4 occTexTrsf2d[2]; //!< 2D texture transformation parameters
|
|
uniform float occPointSize; //!< point size
|
|
|
|
//! Parameters of blended order-independent transparency rendering algorithm
|
|
uniform int occOitOutput; //!< Enable bit for writing output color buffers for OIT (occFragColor, occFragCoverage)
|
|
uniform float occOitDepthFactor; //!< Influence of the depth component to the coverage of the accumulated fragment
|
|
|
|
//! Parameters of clipping planes
|
|
uniform vec4 occClipPlaneEquations[THE_MAX_CLIP_PLANES];
|
|
uniform THE_PREC_ENUM int occClipPlaneCount; //!< Total number of clip planes
|