1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/libGLESv2/Shader.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,184 @@
1.4 +//
1.5 +// Copyright (c) 2002-2013 The ANGLE Project Authors. All rights reserved.
1.6 +// Use of this source code is governed by a BSD-style license that can be
1.7 +// found in the LICENSE file.
1.8 +//
1.9 +
1.10 +// Shader.h: Defines the abstract gl::Shader class and its concrete derived
1.11 +// classes VertexShader and FragmentShader. Implements GL shader objects and
1.12 +// related functionality. [OpenGL ES 2.0.24] section 2.10 page 24 and section
1.13 +// 3.8 page 84.
1.14 +
1.15 +#ifndef LIBGLESV2_SHADER_H_
1.16 +#define LIBGLESV2_SHADER_H_
1.17 +
1.18 +#define GL_APICALL
1.19 +#include <GLES2/gl2.h>
1.20 +#include <string>
1.21 +#include <list>
1.22 +#include <vector>
1.23 +
1.24 +#include "compiler/CompilerUniform.h"
1.25 +#include "common/angleutils.h"
1.26 +
1.27 +namespace rx
1.28 +{
1.29 +class Renderer;
1.30 +}
1.31 +
1.32 +namespace gl
1.33 +{
1.34 +class ResourceManager;
1.35 +
1.36 +struct Varying
1.37 +{
1.38 + Varying(GLenum type, const std::string &name, int size, bool array)
1.39 + : type(type), name(name), size(size), array(array), reg(-1), col(-1)
1.40 + {
1.41 + }
1.42 +
1.43 + GLenum type;
1.44 + std::string name;
1.45 + int size; // Number of 'type' elements
1.46 + bool array;
1.47 +
1.48 + int reg; // First varying register, assigned during link
1.49 + int col; // First register element, assigned during link
1.50 +};
1.51 +
1.52 +typedef std::list<Varying> VaryingList;
1.53 +
1.54 +class Shader
1.55 +{
1.56 + friend class ProgramBinary;
1.57 +
1.58 + public:
1.59 + Shader(ResourceManager *manager, const rx::Renderer *renderer, GLuint handle);
1.60 +
1.61 + virtual ~Shader();
1.62 +
1.63 + virtual GLenum getType() = 0;
1.64 + GLuint getHandle() const;
1.65 +
1.66 + void deleteSource();
1.67 + void setSource(GLsizei count, const char **string, const GLint *length);
1.68 + int getInfoLogLength() const;
1.69 + void getInfoLog(GLsizei bufSize, GLsizei *length, char *infoLog);
1.70 + int getSourceLength() const;
1.71 + void getSource(GLsizei bufSize, GLsizei *length, char *buffer);
1.72 + int getTranslatedSourceLength() const;
1.73 + void getTranslatedSource(GLsizei bufSize, GLsizei *length, char *buffer);
1.74 + const sh::ActiveUniforms &getUniforms();
1.75 +
1.76 + virtual void compile() = 0;
1.77 + virtual void uncompile();
1.78 + bool isCompiled();
1.79 + const char *getHLSL();
1.80 +
1.81 + void addRef();
1.82 + void release();
1.83 + unsigned int getRefCount() const;
1.84 + bool isFlaggedForDeletion() const;
1.85 + void flagForDeletion();
1.86 +
1.87 + static void releaseCompiler();
1.88 +
1.89 + protected:
1.90 + void parseVaryings();
1.91 + void resetVaryingsRegisterAssignment();
1.92 +
1.93 + void compileToHLSL(void *compiler);
1.94 +
1.95 + void getSourceImpl(char *source, GLsizei bufSize, GLsizei *length, char *buffer);
1.96 +
1.97 + static GLenum parseType(const std::string &type);
1.98 + static bool compareVarying(const Varying &x, const Varying &y);
1.99 +
1.100 + const rx::Renderer *const mRenderer;
1.101 +
1.102 + VaryingList mVaryings;
1.103 +
1.104 + bool mUsesMultipleRenderTargets;
1.105 + bool mUsesFragColor;
1.106 + bool mUsesFragData;
1.107 + bool mUsesFragCoord;
1.108 + bool mUsesFrontFacing;
1.109 + bool mUsesPointSize;
1.110 + bool mUsesPointCoord;
1.111 + bool mUsesDepthRange;
1.112 + bool mUsesFragDepth;
1.113 +
1.114 + static void *mFragmentCompiler;
1.115 + static void *mVertexCompiler;
1.116 +
1.117 + private:
1.118 + DISALLOW_COPY_AND_ASSIGN(Shader);
1.119 +
1.120 + void initializeCompiler();
1.121 +
1.122 + const GLuint mHandle;
1.123 + unsigned int mRefCount; // Number of program objects this shader is attached to
1.124 + bool mDeleteStatus; // Flag to indicate that the shader can be deleted when no longer in use
1.125 +
1.126 + char *mSource;
1.127 + char *mHlsl;
1.128 + char *mInfoLog;
1.129 + sh::ActiveUniforms mActiveUniforms;
1.130 +
1.131 + ResourceManager *mResourceManager;
1.132 +};
1.133 +
1.134 +struct Attribute
1.135 +{
1.136 + Attribute() : type(GL_NONE), name("")
1.137 + {
1.138 + }
1.139 +
1.140 + Attribute(GLenum type, const std::string &name) : type(type), name(name)
1.141 + {
1.142 + }
1.143 +
1.144 + GLenum type;
1.145 + std::string name;
1.146 +};
1.147 +
1.148 +typedef std::vector<Attribute> AttributeArray;
1.149 +
1.150 +class VertexShader : public Shader
1.151 +{
1.152 + friend class ProgramBinary;
1.153 +
1.154 + public:
1.155 + VertexShader(ResourceManager *manager, const rx::Renderer *renderer, GLuint handle);
1.156 +
1.157 + ~VertexShader();
1.158 +
1.159 + virtual GLenum getType();
1.160 + virtual void compile();
1.161 + virtual void uncompile();
1.162 + int getSemanticIndex(const std::string &attributeName);
1.163 +
1.164 + private:
1.165 + DISALLOW_COPY_AND_ASSIGN(VertexShader);
1.166 +
1.167 + void parseAttributes();
1.168 +
1.169 + AttributeArray mAttributes;
1.170 +};
1.171 +
1.172 +class FragmentShader : public Shader
1.173 +{
1.174 + public:
1.175 + FragmentShader(ResourceManager *manager,const rx::Renderer *renderer, GLuint handle);
1.176 +
1.177 + ~FragmentShader();
1.178 +
1.179 + virtual GLenum getType();
1.180 + virtual void compile();
1.181 +
1.182 + private:
1.183 + DISALLOW_COPY_AND_ASSIGN(FragmentShader);
1.184 +};
1.185 +}
1.186 +
1.187 +#endif // LIBGLESV2_SHADER_H_
