| /* |
| Copyright 2011 Google Inc. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| |
| #ifndef GrGLInterface_DEFINED |
| #define GrGLInterface_DEFINED |
| |
| #include "GrGLPlatformIncludes.h" |
| |
| #if !defined(GR_GL_FUNCTION_TYPE) |
| #define GR_GL_FUNCTION_TYPE |
| #endif |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| /** |
| * Helpers for glGetString() |
| */ |
| bool has_gl_extension(const char* ext); |
| void gl_version(int* major, int* minor); |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| /* |
| * Routines managing the global interface used to invoke OpenGL calls. |
| */ |
| struct GrGLInterface; |
| extern GrGLInterface* GrGLGetGLInterface(); |
| extern void GrGLSetGLInterface(GrGLInterface* gl_interface); |
| |
| /* |
| * Populates the global GrGLInterface pointer with an instance pointing to the |
| * GL implementation linked with the executable. |
| */ |
| extern void GrGLSetDefaultGLInterface(); |
| |
| extern "C" { |
| /* |
| * The following interface exports the OpenGL entry points used by the system. |
| * Use of OpenGL calls is disallowed. All calls should be invoked through |
| * the global instance of this struct, defined above. |
| * |
| * IMPORTANT NOTE: The OpenGL entry points exposed here include both core GL |
| * functions, and extensions. The system assumes that the address of the |
| * extension pointer will be valid across contexts. |
| */ |
| struct GrGLInterface { |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLActiveTextureProc)(GLenum texture); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLAttachShaderProc)(GLuint program, GLuint shader); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBindAttribLocationProc)(GLuint program, GLuint index, const char* name); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBindBufferProc)(GLenum target, GLuint buffer); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBindTextureProc)(GLenum target, GLuint texture); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBlendColorProc)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBlendFuncProc)(GLenum sfactor, GLenum dfactor); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBufferDataProc)(GLenum target, GLsizei size, const void* data, GLenum usage); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBufferSubDataProc)(GLenum target, GLint offset, GLsizei size, const void* data); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLClearProc)(GLbitfield mask); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLClearColorProc)(GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLClearStencilProc)(GLint s); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLClientActiveTextureProc)(GLenum texture); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLColor4ubProc)(GLubyte red, GLubyte green, GLubyte blue, GLubyte alpha); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLColorMaskProc)(GLboolean red, GLboolean green, GLboolean blue, GLboolean alpha); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLColorPointerProc)(GLint size, GLenum type, GLsizei stride, const GLvoid* pointer); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLCompileShaderProc)(GLuint shader); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLCompressedTexImage2DProc)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const void* data); |
| typedef GLuint (GR_GL_FUNCTION_TYPE *GrGLCreateProgramProc)(void); |
| typedef GLuint (GR_GL_FUNCTION_TYPE *GrGLCreateShaderProc)(GLenum type); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLCullFaceProc)(GLenum mode); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteBuffersProc)(GLsizei n, const GLuint* buffers); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteProgramProc)(GLuint program); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteShaderProc)(GLuint shader); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteTexturesProc)(GLsizei n, const GLuint* textures); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDepthMaskProc)(GLboolean flag); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDisableProc)(GLenum cap); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDisableClientStateProc)(GLenum array); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDisableVertexAttribArrayProc)(GLuint index); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawArraysProc)(GLenum mode, GLint first, GLsizei count); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawElementsProc)(GLenum mode, GLsizei count, GLenum type, const void* indices); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLEnableProc)(GLenum cap); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLEnableClientStateProc)(GLenum cap); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLEnableVertexAttribArrayProc)(GLuint index); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLFrontFaceProc)(GLenum mode); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGenBuffersProc)(GLsizei n, GLuint* buffers); |
| typedef GLenum (GR_GL_FUNCTION_TYPE *GrGLGetErrorProc)(void); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGenTexturesProc)(GLsizei n, GLuint* textures); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGetBufferParameterivProc)(GLenum target, GLenum pname, GLint* params); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGetIntegervProc)(GLenum pname, GLint* params); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGetProgramInfoLogProc)(GLuint program, GLsizei bufsize, GLsizei* length, char* infolog); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGetProgramivProc)(GLuint program, GLenum pname, GLint* params); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGetShaderInfoLogProc)(GLuint shader, GLsizei bufsize, GLsizei* length, char* infolog); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGetShaderivProc)(GLuint shader, GLenum pname, GLint* params); |
| typedef const GLubyte* (GR_GL_FUNCTION_TYPE *GrGLGetStringProc)(GLenum name); |
| typedef GLint (GR_GL_FUNCTION_TYPE *GrGLGetUniformLocationProc)(GLuint program, const char* name); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLLineWidthProc)(GLfloat width); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLLinkProgramProc)(GLuint program); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLLoadMatrixfProc)(const GLfloat* m); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLMatrixModeProc)(GLenum mode); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLPixelStoreiProc)(GLenum pname, GLint param); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLPointSizeProc)(GLfloat size); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLReadPixelsProc)(GLint x, GLint y, GLsizei width, GLsizei height, GLenum format, GLenum type, void* pixels); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLScissorProc)(GLint x, GLint y, GLsizei width, GLsizei height); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLShadeModelProc)(GLenum mode); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLShaderSourceProc)(GLuint shader, GLsizei count, const char** str, const GLint* length); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilFuncProc)(GLenum func, GLint ref, GLuint mask); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilFuncSeparateProc)(GLenum face, GLenum func, GLint ref, GLuint mask); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilMaskProc)(GLuint mask); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilMaskSeparateProc)(GLenum face, GLuint mask); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilOpProc)(GLenum fail, GLenum zfail, GLenum zpass); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilOpSeparateProc)(GLenum face, GLenum fail, GLenum zfail, GLenum zpass); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLTexCoordPointerProc)(GLint size, GLenum type, GLsizei stride, const GLvoid* pointer); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLTexEnviProc)(GLenum target, GLenum pname, GLint param); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLTexImage2DProc)(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void* pixels); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLTexParameteriProc)(GLenum target, GLenum pname, GLint param); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLTexSubImage2DProc)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void* pixels); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1fvProc)(GLint location, GLsizei count, const GLfloat* v); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1iProc)(GLint location, GLint x); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform4fvProc)(GLint location, GLsizei count, const GLfloat* v); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLUniformMatrix3fvProc)(GLint location, GLsizei count, GLboolean transpose, const GLfloat* value); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLUseProgramProc)(GLuint program); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLVertexAttrib4fvProc)(GLuint indx, const GLfloat* values); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLVertexAttribPointerProc)(GLuint indx, GLint size, GLenum type, GLboolean normalized, GLsizei stride, const void* ptr); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLVertexPointerProc)(GLint size, GLenum type, GLsizei stride, const GLvoid* pointer); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLViewportProc)(GLint x, GLint y, GLsizei width, GLsizei height); |
| |
| // FBO Extension Functions |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBindFramebufferProc)(GLenum target, GLuint framebuffer); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBindRenderbufferProc)(GLenum target, GLuint renderbuffer); |
| typedef GLenum (GR_GL_FUNCTION_TYPE *GrGLCheckFramebufferStatusProc)(GLenum target); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteFramebuffersProc)(GLsizei n, const GLuint *framebuffers); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteRenderbuffersProc)(GLsizei n, const GLuint *renderbuffers); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLFramebufferRenderbufferProc)(GLenum target, GLenum attachment, GLenum renderbuffertarget, GLuint renderbuffer); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLFramebufferTexture2DProc)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGenFramebuffersProc)(GLsizei n, GLuint *framebuffers); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLGenRenderbuffersProc)(GLsizei n, GLuint *renderbuffers); |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLRenderbufferStorageProc)(GLenum target, GLenum internalformat, GLsizei width, GLsizei height); |
| |
| // Multisampling Extension Functions |
| // same prototype for ARB_FBO, EXT_FBO, GL 3.0, & Apple ES extension |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLRenderbufferStorageMultisampleProc)(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height); |
| // desktop: ext_fbo_blit, arb_fbo, gl 3.0 |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLBlitFramebufferProc)(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter); |
| // apple's es extension |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLResolveMultisampleFramebufferProc)(); |
| |
| // IMG'e es extension |
| typedef GLvoid (GR_GL_FUNCTION_TYPE *GrGLFramebufferTexture2DMultisampleProc)(GLenum target, GLenum attachment, GLenum textarget, GLuint texture, GLint level, GLsizei samples); |
| |
| // Buffer mapping (extension in ES). |
| typedef GLvoid* (GR_GL_FUNCTION_TYPE *GrGLMapBufferProc)(GLenum target, GLenum access); |
| typedef GLboolean (GR_GL_FUNCTION_TYPE *GrGLUnmapBufferProc)(GLenum target); |
| |
| GrGLActiveTextureProc fActiveTexture; |
| GrGLAttachShaderProc fAttachShader; |
| GrGLBindAttribLocationProc fBindAttribLocation; |
| GrGLBindBufferProc fBindBuffer; |
| GrGLBindTextureProc fBindTexture; |
| GrGLBlendFuncProc fBlendFunc; |
| GrGLBlendColorProc fBlendColor; |
| GrGLBufferDataProc fBufferData; |
| GrGLBufferSubDataProc fBufferSubData; |
| GrGLClearProc fClear; |
| GrGLClearColorProc fClearColor; |
| GrGLClearStencilProc fClearStencil; |
| GrGLClientActiveTextureProc fClientActiveTexture; |
| GrGLColor4ubProc fColor4ub; |
| GrGLColorMaskProc fColorMask; |
| GrGLColorPointerProc fColorPointer; |
| GrGLCompileShaderProc fCompileShader; |
| GrGLCompressedTexImage2DProc fCompressedTexImage2D; |
| GrGLCreateProgramProc fCreateProgram; |
| GrGLCreateShaderProc fCreateShader; |
| GrGLCullFaceProc fCullFace; |
| GrGLDeleteBuffersProc fDeleteBuffers; |
| GrGLDeleteProgramProc fDeleteProgram; |
| GrGLDeleteShaderProc fDeleteShader; |
| GrGLDeleteTexturesProc fDeleteTextures; |
| GrGLDepthMaskProc fDepthMask; |
| GrGLDisableProc fDisable; |
| GrGLDisableClientStateProc fDisableClientState; |
| GrGLDisableVertexAttribArrayProc fDisableVertexAttribArray; |
| GrGLDrawArraysProc fDrawArrays; |
| GrGLDrawElementsProc fDrawElements; |
| GrGLEnableProc fEnable; |
| GrGLEnableClientStateProc fEnableClientState; |
| GrGLEnableVertexAttribArrayProc fEnableVertexAttribArray; |
| GrGLFrontFaceProc fFrontFace; |
| GrGLGenBuffersProc fGenBuffers; |
| GrGLGenTexturesProc fGenTextures; |
| GrGLGetBufferParameterivProc fGetBufferParameteriv; |
| GrGLGetErrorProc fGetError; |
| GrGLGetIntegervProc fGetIntegerv; |
| GrGLGetProgramInfoLogProc fGetProgramInfoLog; |
| GrGLGetProgramivProc fGetProgramiv; |
| GrGLGetShaderInfoLogProc fGetShaderInfoLog; |
| GrGLGetShaderivProc fGetShaderiv; |
| GrGLGetStringProc fGetString; |
| GrGLGetUniformLocationProc fGetUniformLocation; |
| GrGLLineWidthProc fLineWidth; |
| GrGLLinkProgramProc fLinkProgram; |
| GrGLLoadMatrixfProc fLoadMatrixf; |
| GrGLMatrixModeProc fMatrixMode; |
| GrGLPixelStoreiProc fPixelStorei; |
| GrGLPointSizeProc fPointSize; |
| GrGLReadPixelsProc fReadPixels; |
| GrGLScissorProc fScissor; |
| GrGLShadeModelProc fShadeModel; |
| GrGLShaderSourceProc fShaderSource; |
| GrGLStencilFuncProc fStencilFunc; |
| GrGLStencilFuncSeparateProc fStencilFuncSeparate; |
| GrGLStencilMaskProc fStencilMask; |
| GrGLStencilMaskSeparateProc fStencilMaskSeparate; |
| GrGLStencilOpProc fStencilOp; |
| GrGLStencilOpSeparateProc fStencilOpSeparate; |
| GrGLTexCoordPointerProc fTexCoordPointer; |
| GrGLTexEnviProc fTexEnvi; |
| GrGLTexImage2DProc fTexImage2D; |
| GrGLTexParameteriProc fTexParameteri; |
| GrGLTexSubImage2DProc fTexSubImage2D; |
| GrGLUniform1fvProc fUniform1fv; |
| GrGLUniform1iProc fUniform1i; |
| GrGLUniform4fvProc fUniform4fv; |
| GrGLUniformMatrix3fvProc fUniformMatrix3fv; |
| GrGLUseProgramProc fUseProgram; |
| GrGLVertexAttrib4fvProc fVertexAttrib4fv; |
| GrGLVertexAttribPointerProc fVertexAttribPointer; |
| GrGLVertexPointerProc fVertexPointer; |
| GrGLViewportProc fViewport; |
| |
| // FBO Extension Functions |
| GrGLBindFramebufferProc fBindFramebuffer; |
| GrGLBindRenderbufferProc fBindRenderbuffer; |
| GrGLCheckFramebufferStatusProc fCheckFramebufferStatus; |
| GrGLDeleteFramebuffersProc fDeleteFramebuffers; |
| GrGLDeleteRenderbuffersProc fDeleteRenderbuffers; |
| GrGLFramebufferRenderbufferProc fFramebufferRenderbuffer; |
| GrGLFramebufferTexture2DProc fFramebufferTexture2D; |
| GrGLGenFramebuffersProc fGenFramebuffers; |
| GrGLGenRenderbuffersProc fGenRenderbuffers; |
| GrGLRenderbufferStorageProc fRenderbufferStorage; |
| |
| // Multisampling Extension Functions |
| // same prototype for ARB_FBO, EXT_FBO, GL 3.0, & Apple ES extension |
| GrGLRenderbufferStorageMultisampleProc fRenderbufferStorageMultisample; |
| // desktop: ext_fbo_blit, arb_fbo, gl 3.0 |
| GrGLBlitFramebufferProc fBlitFramebuffer; |
| // apple's es extension |
| GrGLResolveMultisampleFramebufferProc fResolveMultisampleFramebuffer; |
| |
| // IMG'e es extension |
| GrGLFramebufferTexture2DMultisampleProc fFramebufferTexture2DMultisample; |
| |
| // Buffer mapping (extension in ES). |
| GrGLMapBufferProc fMapBuffer; |
| GrGLUnmapBufferProc fUnmapBuffer; |
| }; |
| |
| } // extern "C" |
| |
| #endif |