6bf38b59c9
coexist alongside D3D backend. Requires gyp change. http://codereview.appspot.com/5665045/ git-svn-id: http://skia.googlecode.com/svn/trunk@3185 2bbb7eff-a529-9590-31e7-b0007b416f81
430 lines
24 KiB
C
430 lines
24 KiB
C
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/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrGLInterface_DEFINED
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#define GrGLInterface_DEFINED
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#include "GrGLConfig.h"
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#include "GrRefCnt.h"
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#if !defined(GR_GL_FUNCTION_TYPE)
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#define GR_GL_FUNCTION_TYPE
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#endif
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////////////////////////////////////////////////////////////////////////////////
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/**
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* Classifies GL contexts (currently as Desktop vs. ES2). This is a bitfield.
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* A GrGLInterface (defined below) may support multiple bindings.
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*/
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enum GrGLBinding {
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kNone_GrGLBinding = 0x0,
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kDesktop_GrGLBinding = 0x01,
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kES2_GrGLBinding = 0x02,
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// for iteration of GrGLBindings
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kFirstGrGLBinding = kDesktop_GrGLBinding,
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kLastGrGLBinding = kES2_GrGLBinding
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};
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////////////////////////////////////////////////////////////////////////////////
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/**
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* Helpers for glGetString()
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*/
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typedef uint32_t GrGLVersion;
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typedef uint32_t GrGLSLVersion;
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#define GR_GL_VER(major, minor) ((static_cast<int>(major) << 16) | \
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static_cast<int>(minor))
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#define GR_GLSL_VER(major, minor) ((static_cast<int>(major) << 16) | \
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static_cast<int>(minor))
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// these variants assume caller already has a string from glGetString()
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GrGLVersion GrGLGetVersionFromString(const char* versionString);
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GrGLBinding GrGLGetBindingInUseFromString(const char* versionString);
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GrGLSLVersion GrGLGetGLSLVersionFromString(const char* versionString);
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bool GrGLHasExtensionFromString(const char* ext, const char* extensionString);
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// these variants call glGetString()
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bool GrGLHasExtension(const GrGLInterface*, const char* ext);
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GrGLBinding GrGLGetBindingInUse(const GrGLInterface*);
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GrGLVersion GrGLGetVersion(const GrGLInterface*);
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GrGLSLVersion GrGLGetGLSLVersion(const GrGLInterface*);
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////////////////////////////////////////////////////////////////////////////////
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/**
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* Rather than depend on platform-specific GL headers and libraries, we require
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* the client to provide a struct of GL function pointers. This struct can be
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* specified per-GrContext as a parameter to GrContext::Create. If NULL is
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* passed to Create then the "default" GL interface is used. If the default is
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* also NULL GrContext creation will fail.
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*
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* The default interface is returned by GrGLDefaultInterface. This function's
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* implementation is platform-specifc. Several have been provided, along with an
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* implementation that simply returns NULL. It is implementation-specific
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* whether the same GrGLInterface is returned or whether a new one is created
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* at each call. Some platforms may not be able to use a single GrGLInterface
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* because extension function ptrs vary across contexts. Note that GrGLInterface
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* is ref-counted. So if the same object is returned by multiple calls to
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* GrGLDefaultInterface, each should bump the ref count.
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*
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* By defining GR_GL_PER_GL_CALL_IFACE_CALLBACK to 1 the client can specify a
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* callback function that will be called prior to each GL function call. See
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* comments in GrGLConfig.h
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*/
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struct GrGLInterface;
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const GrGLInterface* GrGLDefaultInterface();
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/**
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* Creates a GrGLInterface for a "native" GL context (e.g. WGL on windows,
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* GLX on linux, AGL on Mac). On platforms that have context-specific function
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* pointers for GL extensions (e.g. windows) the returned interface is only
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* valid for the context that was current at creation.
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*/
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const GrGLInterface* GrGLCreateNativeInterface();
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/**
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* Creates a GrGLInterface for an OSMesa context.
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*/
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const GrGLInterface* GrGLCreateMesaInterface();
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/**
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* Creates a null GrGLInterface that doesn't draw anything. Used for measuring
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* CPU overhead.
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*/
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const GrGLInterface* GrGLCreateNullInterface();
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typedef unsigned int GrGLenum;
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typedef unsigned char GrGLboolean;
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typedef unsigned int GrGLbitfield;
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typedef signed char GrGLbyte;
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typedef char GrGLchar;
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typedef short GrGLshort;
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typedef int GrGLint;
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typedef int GrGLsizei;
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typedef int64_t GrGLint64;
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typedef unsigned char GrGLubyte;
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typedef unsigned short GrGLushort;
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typedef unsigned int GrGLuint;
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typedef uint64_t GrGLuint64;
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typedef float GrGLfloat;
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typedef float GrGLclampf;
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typedef double GrGLdouble;
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typedef double GrGLclampd;
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typedef void GrGLvoid;
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typedef long GrGLintptr;
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typedef long GrGLsizeiptr;
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extern "C" {
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLActiveTextureProc)(GrGLenum texture);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLAttachShaderProc)(GrGLuint program, GrGLuint shader);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBeginQueryProc)(GrGLenum target, GrGLuint id);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindAttribLocationProc)(GrGLuint program, GrGLuint index, const char* name);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindBufferProc)(GrGLenum target, GrGLuint buffer);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindTextureProc)(GrGLenum target, GrGLuint texture);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBlendColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindFragDataLocationProc)(GrGLuint program, GrGLuint colorNumber, const GrGLchar* name);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBlendFuncProc)(GrGLenum sfactor, GrGLenum dfactor);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBufferDataProc)(GrGLenum target, GrGLsizeiptr size, const GrGLvoid* data, GrGLenum usage);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBufferSubDataProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr size, const GrGLvoid* data);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLClearProc)(GrGLbitfield mask);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLClearColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLClearStencilProc)(GrGLint s);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLColorMaskProc)(GrGLboolean red, GrGLboolean green, GrGLboolean blue, GrGLboolean alpha);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLColorPointerProc)(GrGLint size, GrGLenum type, GrGLsizei stride, const GrGLvoid* pointer);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLCompileShaderProc)(GrGLuint shader);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLCompressedTexImage2DProc)(GrGLenum target, GrGLint level, GrGLenum internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLsizei imageSize, const GrGLvoid* data);
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typedef GrGLuint (GR_GL_FUNCTION_TYPE *GrGLCreateProgramProc)(void);
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typedef GrGLuint (GR_GL_FUNCTION_TYPE *GrGLCreateShaderProc)(GrGLenum type);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLCullFaceProc)(GrGLenum mode);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteBuffersProc)(GrGLsizei n, const GrGLuint* buffers);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteProgramProc)(GrGLuint program);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteQueriesProc)(GrGLsizei n, const GrGLuint *ids);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteShaderProc)(GrGLuint shader);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteTexturesProc)(GrGLsizei n, const GrGLuint* textures);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDepthMaskProc)(GrGLboolean flag);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDisableProc)(GrGLenum cap);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDisableVertexAttribArrayProc)(GrGLuint index);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawArraysProc)(GrGLenum mode, GrGLint first, GrGLsizei count);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawBufferProc)(GrGLenum mode);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawBuffersProc)(GrGLsizei n, const GrGLenum* bufs);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawElementsProc)(GrGLenum mode, GrGLsizei count, GrGLenum type, const GrGLvoid* indices);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLEnableProc)(GrGLenum cap);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLEnableVertexAttribArrayProc)(GrGLuint index);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLEndQueryProc)(GrGLenum target);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFinishProc)();
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFlushProc)();
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFrontFaceProc)(GrGLenum mode);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenBuffersProc)(GrGLsizei n, GrGLuint* buffers);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenQueriesProc)(GrGLsizei n, GrGLuint *ids);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenTexturesProc)(GrGLsizei n, GrGLuint* textures);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetBufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params);
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typedef GrGLenum (GR_GL_FUNCTION_TYPE *GrGLGetErrorProc)();
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetIntegervProc)(GrGLenum pname, GrGLint* params);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetProgramInfoLogProc)(GrGLuint program, GrGLsizei bufsize, GrGLsizei* length, char* infolog);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetProgramivProc)(GrGLuint program, GrGLenum pname, GrGLint* params);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryivProc)(GrGLenum GLtarget, GrGLenum pname, GrGLint *params);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryObjecti64vProc)(GrGLuint id, GrGLenum pname, GrGLint64 *params);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryObjectivProc)(GrGLuint id, GrGLenum pname, GrGLint *params);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryObjectui64vProc)(GrGLuint id, GrGLenum pname, GrGLuint64 *params);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryObjectuivProc)(GrGLuint id, GrGLenum pname, GrGLuint *params);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetShaderInfoLogProc)(GrGLuint shader, GrGLsizei bufsize, GrGLsizei* length, char* infolog);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetShaderivProc)(GrGLuint shader, GrGLenum pname, GrGLint* params);
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typedef const GrGLubyte* (GR_GL_FUNCTION_TYPE *GrGLGetStringProc)(GrGLenum name);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetTexLevelParameterivProc)(GrGLenum target, GrGLint level, GrGLenum pname, GrGLint* params);
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typedef GrGLint (GR_GL_FUNCTION_TYPE *GrGLGetUniformLocationProc)(GrGLuint program, const char* name);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLLineWidthProc)(GrGLfloat width);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLLinkProgramProc)(GrGLuint program);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLPixelStoreiProc)(GrGLenum pname, GrGLint param);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLQueryCounterProc)(GrGLuint id, GrGLenum target);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLReadBufferProc)(GrGLenum src);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLReadPixelsProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLvoid* pixels);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLScissorProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLShaderSourceProc)(GrGLuint shader, GrGLsizei count, const char** str, const GrGLint* length);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilFuncProc)(GrGLenum func, GrGLint ref, GrGLuint mask);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilFuncSeparateProc)(GrGLenum face, GrGLenum func, GrGLint ref, GrGLuint mask);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilMaskProc)(GrGLuint mask);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilMaskSeparateProc)(GrGLenum face, GrGLuint mask);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilOpProc)(GrGLenum fail, GrGLenum zfail, GrGLenum zpass);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilOpSeparateProc)(GrGLenum face, GrGLenum fail, GrGLenum zfail, GrGLenum zpass);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLTexImage2DProc)(GrGLenum target, GrGLint level, GrGLint internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLenum format, GrGLenum type, const GrGLvoid* pixels);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLTexParameteriProc)(GrGLenum target, GrGLenum pname, GrGLint param);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLTexStorage2DProc)(GrGLenum target, GrGLsizei levels, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLTexSubImage2DProc)(GrGLenum target, GrGLint level, GrGLint xoffset, GrGLint yoffset, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, const GrGLvoid* pixels);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1fProc)(GrGLint location, GrGLfloat v0);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1iProc)(GrGLint location, GrGLint v0);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform2fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform2iProc)(GrGLint location, GrGLint v0, GrGLint v1);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform2fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform2ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform3fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform3iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform3fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform3ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform4fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2, GrGLfloat v3);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform4iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2, GrGLint v3);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform4fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform4ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniformMatrix2fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniformMatrix3fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniformMatrix4fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUseProgramProc)(GrGLuint program);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLVertexAttrib4fvProc)(GrGLuint indx, const GrGLfloat* values);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLVertexAttribPointerProc)(GrGLuint indx, GrGLint size, GrGLenum type, GrGLboolean normalized, GrGLsizei stride, const GrGLvoid* ptr);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLViewportProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height);
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// FBO Extension Functions
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindFramebufferProc)(GrGLenum target, GrGLuint framebuffer);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindRenderbufferProc)(GrGLenum target, GrGLuint renderbuffer);
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typedef GrGLenum (GR_GL_FUNCTION_TYPE *GrGLCheckFramebufferStatusProc)(GrGLenum target);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteFramebuffersProc)(GrGLsizei n, const GrGLuint *framebuffers);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteRenderbuffersProc)(GrGLsizei n, const GrGLuint *renderbuffers);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFramebufferRenderbufferProc)(GrGLenum target, GrGLenum attachment, GrGLenum renderbuffertarget, GrGLuint renderbuffer);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFramebufferTexture2DProc)(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenFramebuffersProc)(GrGLsizei n, GrGLuint *framebuffers);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenRenderbuffersProc)(GrGLsizei n, GrGLuint *renderbuffers);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetFramebufferAttachmentParameterivProc)(GrGLenum target, GrGLenum attachment, GrGLenum pname, GrGLint* params);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetRenderbufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params);
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLRenderbufferStorageProc)(GrGLenum target, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
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// Multisampling Extension Functions
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// same prototype for ARB_FBO, EXT_FBO, GL 3.0, & Apple ES extension
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLRenderbufferStorageMultisampleProc)(GrGLenum target, GrGLsizei samples, GrGLenum internalformat, GrGLsizei width, GrGLsizei height);
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// desktop: ext_fbo_blit, arb_fbo, gl 3.0
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBlitFramebufferProc)(GrGLint srcX0, GrGLint srcY0, GrGLint srcX1, GrGLint srcY1, GrGLint dstX0, GrGLint dstY0, GrGLint dstX1, GrGLint dstY1, GrGLbitfield mask, GrGLenum filter);
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// apple's es extension
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLResolveMultisampleFramebufferProc)();
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// Buffer mapping (extension in ES).
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typedef GrGLvoid* (GR_GL_FUNCTION_TYPE *GrGLMapBufferProc)(GrGLenum target, GrGLenum access);
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typedef GrGLboolean (GR_GL_FUNCTION_TYPE *GrGLUnmapBufferProc)(GrGLenum target);
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// Dual source blending
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typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindFragDataLocationIndexedProc)(GrGLuint program, GrGLuint colorNumber, GrGLuint index, const GrGLchar * name);
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} // extern "C"
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#if GR_GL_PER_GL_FUNC_CALLBACK
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typedef void (*GrGLInterfaceCallbackProc)(const GrGLInterface*);
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typedef intptr_t GrGLInterfaceCallbackData;
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#endif
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enum GrGLCapability {
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kProbe_GrGLCapability = -1
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};
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/*
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* The following interface exports the OpenGL entry points used by the system.
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* Use of OpenGL calls is disallowed. All calls should be invoked through
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* the global instance of this struct, defined above.
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*
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* IMPORTANT NOTE: The OpenGL entry points exposed here include both core GL
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* functions, and extensions. The system assumes that the address of the
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* extension pointer will be valid across contexts.
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*/
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struct GR_API GrGLInterface : public GrRefCnt {
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GrGLInterface();
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// Validates that the GrGLInterface supports a binding. This means that
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// the GrGLinterface advertises the binding in fBindingsExported and all
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// the necessary function pointers have been initialized.
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bool validate(GrGLBinding binding) const;
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// Indicator variable specifying the type of GL implementation
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// exported: GLES{1|2} or Desktop.
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GrGLBinding fBindingsExported;
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GrGLActiveTextureProc fActiveTexture;
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GrGLAttachShaderProc fAttachShader;
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GrGLBeginQueryProc fBeginQuery;
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GrGLBindAttribLocationProc fBindAttribLocation;
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GrGLBindBufferProc fBindBuffer;
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GrGLBindFragDataLocationProc fBindFragDataLocation;
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GrGLBindTextureProc fBindTexture;
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GrGLBlendColorProc fBlendColor;
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GrGLBlendFuncProc fBlendFunc;
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GrGLBufferDataProc fBufferData;
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GrGLBufferSubDataProc fBufferSubData;
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GrGLClearProc fClear;
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GrGLClearColorProc fClearColor;
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GrGLClearStencilProc fClearStencil;
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GrGLColorMaskProc fColorMask;
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GrGLColorPointerProc fColorPointer;
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GrGLCompileShaderProc fCompileShader;
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|
GrGLCompressedTexImage2DProc fCompressedTexImage2D;
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GrGLCreateProgramProc fCreateProgram;
|
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GrGLCreateShaderProc fCreateShader;
|
|
GrGLCullFaceProc fCullFace;
|
|
GrGLDeleteBuffersProc fDeleteBuffers;
|
|
GrGLDeleteProgramProc fDeleteProgram;
|
|
GrGLDeleteQueriesProc fDeleteQueries;
|
|
GrGLDeleteShaderProc fDeleteShader;
|
|
GrGLDeleteTexturesProc fDeleteTextures;
|
|
GrGLDepthMaskProc fDepthMask;
|
|
GrGLDisableProc fDisable;
|
|
GrGLDisableVertexAttribArrayProc fDisableVertexAttribArray;
|
|
GrGLDrawArraysProc fDrawArrays;
|
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GrGLDrawBufferProc fDrawBuffer;
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|
GrGLDrawBuffersProc fDrawBuffers;
|
|
GrGLDrawElementsProc fDrawElements;
|
|
GrGLEnableProc fEnable;
|
|
GrGLEnableVertexAttribArrayProc fEnableVertexAttribArray;
|
|
GrGLEndQueryProc fEndQuery;
|
|
GrGLFinishProc fFinish;
|
|
GrGLFlushProc fFlush;
|
|
GrGLFrontFaceProc fFrontFace;
|
|
GrGLGenBuffersProc fGenBuffers;
|
|
GrGLGenQueriesProc fGenQueries;
|
|
GrGLGenTexturesProc fGenTextures;
|
|
GrGLGetBufferParameterivProc fGetBufferParameteriv;
|
|
GrGLGetErrorProc fGetError;
|
|
GrGLGetIntegervProc fGetIntegerv;
|
|
GrGLGetQueryObjecti64vProc fGetQueryObjecti64v;
|
|
GrGLGetQueryObjectivProc fGetQueryObjectiv;
|
|
GrGLGetQueryObjectui64vProc fGetQueryObjectui64v;
|
|
GrGLGetQueryObjectuivProc fGetQueryObjectuiv;
|
|
GrGLGetQueryivProc fGetQueryiv;
|
|
GrGLGetProgramInfoLogProc fGetProgramInfoLog;
|
|
GrGLGetProgramivProc fGetProgramiv;
|
|
GrGLGetShaderInfoLogProc fGetShaderInfoLog;
|
|
GrGLGetShaderivProc fGetShaderiv;
|
|
GrGLGetStringProc fGetString;
|
|
GrGLGetTexLevelParameterivProc fGetTexLevelParameteriv;
|
|
GrGLGetUniformLocationProc fGetUniformLocation;
|
|
GrGLLineWidthProc fLineWidth;
|
|
GrGLLinkProgramProc fLinkProgram;
|
|
GrGLPixelStoreiProc fPixelStorei;
|
|
GrGLQueryCounterProc fQueryCounter;
|
|
GrGLReadBufferProc fReadBuffer;
|
|
GrGLReadPixelsProc fReadPixels;
|
|
GrGLScissorProc fScissor;
|
|
GrGLShaderSourceProc fShaderSource;
|
|
GrGLStencilFuncProc fStencilFunc;
|
|
GrGLStencilFuncSeparateProc fStencilFuncSeparate;
|
|
GrGLStencilMaskProc fStencilMask;
|
|
GrGLStencilMaskSeparateProc fStencilMaskSeparate;
|
|
GrGLStencilOpProc fStencilOp;
|
|
GrGLStencilOpSeparateProc fStencilOpSeparate;
|
|
GrGLTexImage2DProc fTexImage2D;
|
|
GrGLTexParameteriProc fTexParameteri;
|
|
GrGLTexSubImage2DProc fTexSubImage2D;
|
|
GrGLTexStorage2DProc fTexStorage2D;
|
|
GrGLUniform1fProc fUniform1f;
|
|
GrGLUniform1iProc fUniform1i;
|
|
GrGLUniform1fvProc fUniform1fv;
|
|
GrGLUniform1ivProc fUniform1iv;
|
|
GrGLUniform2fProc fUniform2f;
|
|
GrGLUniform2iProc fUniform2i;
|
|
GrGLUniform2fvProc fUniform2fv;
|
|
GrGLUniform2ivProc fUniform2iv;
|
|
GrGLUniform3fProc fUniform3f;
|
|
GrGLUniform3iProc fUniform3i;
|
|
GrGLUniform3fvProc fUniform3fv;
|
|
GrGLUniform3ivProc fUniform3iv;
|
|
GrGLUniform4fProc fUniform4f;
|
|
GrGLUniform4iProc fUniform4i;
|
|
GrGLUniform4fvProc fUniform4fv;
|
|
GrGLUniform4ivProc fUniform4iv;
|
|
GrGLUniformMatrix2fvProc fUniformMatrix2fv;
|
|
GrGLUniformMatrix3fvProc fUniformMatrix3fv;
|
|
GrGLUniformMatrix4fvProc fUniformMatrix4fv;
|
|
GrGLUseProgramProc fUseProgram;
|
|
GrGLVertexAttrib4fvProc fVertexAttrib4fv;
|
|
GrGLVertexAttribPointerProc fVertexAttribPointer;
|
|
GrGLViewportProc fViewport;
|
|
|
|
// FBO Extension Functions
|
|
GrGLBindFramebufferProc fBindFramebuffer;
|
|
GrGLBindRenderbufferProc fBindRenderbuffer;
|
|
GrGLCheckFramebufferStatusProc fCheckFramebufferStatus;
|
|
GrGLDeleteFramebuffersProc fDeleteFramebuffers;
|
|
GrGLDeleteRenderbuffersProc fDeleteRenderbuffers;
|
|
GrGLFramebufferRenderbufferProc fFramebufferRenderbuffer;
|
|
GrGLFramebufferTexture2DProc fFramebufferTexture2D;
|
|
GrGLGenFramebuffersProc fGenFramebuffers;
|
|
GrGLGenRenderbuffersProc fGenRenderbuffers;
|
|
GrGLGetFramebufferAttachmentParameterivProc fGetFramebufferAttachmentParameteriv;
|
|
GrGLGetRenderbufferParameterivProc fGetRenderbufferParameteriv;
|
|
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;
|
|
|
|
// Buffer mapping (extension in ES).
|
|
GrGLMapBufferProc fMapBuffer;
|
|
GrGLUnmapBufferProc fUnmapBuffer;
|
|
|
|
// Dual Source Blending
|
|
GrGLBindFragDataLocationIndexedProc fBindFragDataLocationIndexed;
|
|
|
|
// Per-GL func callback
|
|
#if GR_GL_PER_GL_FUNC_CALLBACK
|
|
GrGLInterfaceCallbackProc fCallback;
|
|
GrGLInterfaceCallbackData fCallbackData;
|
|
#endif
|
|
|
|
};
|
|
|
|
#endif
|