1 2 /* 3 * Copyright 2011 Google Inc. 4 * 5 * Use of this source code is governed by a BSD-style license that can be 6 * found in the LICENSE file. 7 */ 8 9 10 11 #ifndef GrGLInterface_DEFINED 12 #define GrGLInterface_DEFINED 13 14 #include "GrGLConfig.h" 15 #include "GrRefCnt.h" 16 17 #if !defined(GR_GL_FUNCTION_TYPE) 18 #define GR_GL_FUNCTION_TYPE 19 #endif 20 21 //////////////////////////////////////////////////////////////////////////////// 22 23 /** 24 * Classifies GL contexts (currently as Desktop vs. ES2). This is a bitfield. 25 * A GrGLInterface (defined below) may support multiple bindings. 26 */ 27 enum GrGLBinding { 28 kNone_GrGLBinding = 0x0, 29 30 kDesktop_GrGLBinding = 0x01, 31 kES2_GrGLBinding = 0x02, 32 33 // for iteration of GrGLBindings 34 kFirstGrGLBinding = kDesktop_GrGLBinding, 35 kLastGrGLBinding = kES2_GrGLBinding 36 }; 37 38 //////////////////////////////////////////////////////////////////////////////// 39 40 /** 41 * Helpers for glGetString() 42 */ 43 44 typedef uint32_t GrGLVersion; 45 typedef uint32_t GrGLSLVersion; 46 47 #define GR_GL_VER(major, minor) ((static_cast<int>(major) << 16) | \ 48 static_cast<int>(minor)) 49 #define GR_GLSL_VER(major, minor) ((static_cast<int>(major) << 16) | \ 50 static_cast<int>(minor)) 51 52 // these variants assume caller already has a string from glGetString() 53 GrGLVersion GrGLGetVersionFromString(const char* versionString); 54 GrGLBinding GrGLGetBindingInUseFromString(const char* versionString); 55 GrGLSLVersion GrGLGetGLSLVersionFromString(const char* versionString); 56 bool GrGLHasExtensionFromString(const char* ext, const char* extensionString); 57 58 // these variants call glGetString() 59 bool GrGLHasExtension(const GrGLInterface*, const char* ext); 60 GrGLBinding GrGLGetBindingInUse(const GrGLInterface*); 61 GrGLVersion GrGLGetVersion(const GrGLInterface*); 62 GrGLSLVersion GrGLGetGLSLVersion(const GrGLInterface*); 63 64 //////////////////////////////////////////////////////////////////////////////// 65 66 /** 67 * Rather than depend on platform-specific GL headers and libraries, we require 68 * the client to provide a struct of GL function pointers. This struct can be 69 * specified per-GrContext as a parameter to GrContext::Create. If NULL is 70 * passed to Create then the "default" GL interface is used. If the default is 71 * also NULL GrContext creation will fail. 72 * 73 * The default interface is returned by GrGLDefaultInterface. This function's 74 * implementation is platform-specifc. Several have been provided, along with an 75 * implementation that simply returns NULL. It is implementation-specific 76 * whether the same GrGLInterface is returned or whether a new one is created 77 * at each call. Some platforms may not be able to use a single GrGLInterface 78 * because extension function ptrs vary across contexts. Note that GrGLInterface 79 * is ref-counted. So if the same object is returned by multiple calls to 80 * GrGLDefaultInterface, each should bump the ref count. 81 * 82 * By defining GR_GL_PER_GL_CALL_IFACE_CALLBACK to 1 the client can specify a 83 * callback function that will be called prior to each GL function call. See 84 * comments in GrGLConfig.h 85 */ 86 87 struct GrGLInterface; 88 89 const GrGLInterface* GrGLDefaultInterface(); 90 91 /** 92 * Creates a GrGLInterface for a "native" GL context (e.g. WGL on windows, 93 * GLX on linux, AGL on Mac). On platforms that have context-specific function 94 * pointers for GL extensions (e.g. windows) the returned interface is only 95 * valid for the context that was current at creation. 96 */ 97 const GrGLInterface* GrGLCreateNativeInterface(); 98 99 /** 100 * Creates a GrGLInterface for an OSMesa context. 101 */ 102 const GrGLInterface* GrGLCreateMesaInterface(); 103 104 /** 105 * Creates a null GrGLInterface that doesn't draw anything. Used for measuring 106 * CPU overhead. 107 */ 108 const GrGLInterface* GrGLCreateNullInterface(); 109 110 typedef unsigned int GrGLenum; 111 typedef unsigned char GrGLboolean; 112 typedef unsigned int GrGLbitfield; 113 typedef signed char GrGLbyte; 114 typedef char GrGLchar; 115 typedef short GrGLshort; 116 typedef int GrGLint; 117 typedef int GrGLsizei; 118 typedef int64_t GrGLint64; 119 typedef unsigned char GrGLubyte; 120 typedef unsigned short GrGLushort; 121 typedef unsigned int GrGLuint; 122 typedef uint64_t GrGLuint64; 123 typedef float GrGLfloat; 124 typedef float GrGLclampf; 125 typedef double GrGLdouble; 126 typedef double GrGLclampd; 127 typedef void GrGLvoid; 128 typedef long GrGLintptr; 129 typedef long GrGLsizeiptr; 130 131 extern "C" { 132 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLActiveTextureProc)(GrGLenum texture); 133 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLAttachShaderProc)(GrGLuint program, GrGLuint shader); 134 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBeginQueryProc)(GrGLenum target, GrGLuint id); 135 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindAttribLocationProc)(GrGLuint program, GrGLuint index, const char* name); 136 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindBufferProc)(GrGLenum target, GrGLuint buffer); 137 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindTextureProc)(GrGLenum target, GrGLuint texture); 138 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBlendColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha); 139 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindFragDataLocationProc)(GrGLuint program, GrGLuint colorNumber, const GrGLchar* name); 140 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBlendFuncProc)(GrGLenum sfactor, GrGLenum dfactor); 141 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBufferDataProc)(GrGLenum target, GrGLsizeiptr size, const GrGLvoid* data, GrGLenum usage); 142 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBufferSubDataProc)(GrGLenum target, GrGLintptr offset, GrGLsizeiptr size, const GrGLvoid* data); 143 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLClearProc)(GrGLbitfield mask); 144 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLClearColorProc)(GrGLclampf red, GrGLclampf green, GrGLclampf blue, GrGLclampf alpha); 145 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLClearStencilProc)(GrGLint s); 146 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLColorMaskProc)(GrGLboolean red, GrGLboolean green, GrGLboolean blue, GrGLboolean alpha); 147 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLColorPointerProc)(GrGLint size, GrGLenum type, GrGLsizei stride, const GrGLvoid* pointer); 148 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLCompileShaderProc)(GrGLuint shader); 149 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLCompressedTexImage2DProc)(GrGLenum target, GrGLint level, GrGLenum internalformat, GrGLsizei width, GrGLsizei height, GrGLint border, GrGLsizei imageSize, const GrGLvoid* data); 150 typedef GrGLuint (GR_GL_FUNCTION_TYPE *GrGLCreateProgramProc)(void); 151 typedef GrGLuint (GR_GL_FUNCTION_TYPE *GrGLCreateShaderProc)(GrGLenum type); 152 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLCullFaceProc)(GrGLenum mode); 153 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteBuffersProc)(GrGLsizei n, const GrGLuint* buffers); 154 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteProgramProc)(GrGLuint program); 155 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteQueriesProc)(GrGLsizei n, const GrGLuint *ids); 156 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteShaderProc)(GrGLuint shader); 157 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteTexturesProc)(GrGLsizei n, const GrGLuint* textures); 158 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDepthMaskProc)(GrGLboolean flag); 159 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDisableProc)(GrGLenum cap); 160 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDisableVertexAttribArrayProc)(GrGLuint index); 161 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawArraysProc)(GrGLenum mode, GrGLint first, GrGLsizei count); 162 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawBufferProc)(GrGLenum mode); 163 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawBuffersProc)(GrGLsizei n, const GrGLenum* bufs); 164 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDrawElementsProc)(GrGLenum mode, GrGLsizei count, GrGLenum type, const GrGLvoid* indices); 165 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLEnableProc)(GrGLenum cap); 166 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLEnableVertexAttribArrayProc)(GrGLuint index); 167 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLEndQueryProc)(GrGLenum target); 168 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFinishProc)(); 169 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFlushProc)(); 170 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFrontFaceProc)(GrGLenum mode); 171 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenBuffersProc)(GrGLsizei n, GrGLuint* buffers); 172 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenQueriesProc)(GrGLsizei n, GrGLuint *ids); 173 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenTexturesProc)(GrGLsizei n, GrGLuint* textures); 174 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetBufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params); 175 typedef GrGLenum (GR_GL_FUNCTION_TYPE *GrGLGetErrorProc)(); 176 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetIntegervProc)(GrGLenum pname, GrGLint* params); 177 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetProgramInfoLogProc)(GrGLuint program, GrGLsizei bufsize, GrGLsizei* length, char* infolog); 178 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetProgramivProc)(GrGLuint program, GrGLenum pname, GrGLint* params); 179 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryivProc)(GrGLenum GLtarget, GrGLenum pname, GrGLint *params); 180 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryObjecti64vProc)(GrGLuint id, GrGLenum pname, GrGLint64 *params); 181 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryObjectivProc)(GrGLuint id, GrGLenum pname, GrGLint *params); 182 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryObjectui64vProc)(GrGLuint id, GrGLenum pname, GrGLuint64 *params); 183 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetQueryObjectuivProc)(GrGLuint id, GrGLenum pname, GrGLuint *params); 184 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetShaderInfoLogProc)(GrGLuint shader, GrGLsizei bufsize, GrGLsizei* length, char* infolog); 185 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetShaderivProc)(GrGLuint shader, GrGLenum pname, GrGLint* params); 186 typedef const GrGLubyte* (GR_GL_FUNCTION_TYPE *GrGLGetStringProc)(GrGLenum name); 187 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetTexLevelParameterivProc)(GrGLenum target, GrGLint level, GrGLenum pname, GrGLint* params); 188 typedef GrGLint (GR_GL_FUNCTION_TYPE *GrGLGetUniformLocationProc)(GrGLuint program, const char* name); 189 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLLineWidthProc)(GrGLfloat width); 190 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLLinkProgramProc)(GrGLuint program); 191 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLPixelStoreiProc)(GrGLenum pname, GrGLint param); 192 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLQueryCounterProc)(GrGLuint id, GrGLenum target); 193 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLReadBufferProc)(GrGLenum src); 194 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLReadPixelsProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height, GrGLenum format, GrGLenum type, GrGLvoid* pixels); 195 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLScissorProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height); 196 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLShaderSourceProc)(GrGLuint shader, GrGLsizei count, const char** str, const GrGLint* length); 197 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilFuncProc)(GrGLenum func, GrGLint ref, GrGLuint mask); 198 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilFuncSeparateProc)(GrGLenum face, GrGLenum func, GrGLint ref, GrGLuint mask); 199 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilMaskProc)(GrGLuint mask); 200 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilMaskSeparateProc)(GrGLenum face, GrGLuint mask); 201 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilOpProc)(GrGLenum fail, GrGLenum zfail, GrGLenum zpass); 202 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLStencilOpSeparateProc)(GrGLenum face, GrGLenum fail, GrGLenum zfail, GrGLenum zpass); 203 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); 204 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLTexParameteriProc)(GrGLenum target, GrGLenum pname, GrGLint param); 205 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLTexStorage2DProc)(GrGLenum target, GrGLsizei levels, GrGLenum internalformat, GrGLsizei width, GrGLsizei height); 206 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); 207 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1fProc)(GrGLint location, GrGLfloat v0); 208 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1iProc)(GrGLint location, GrGLint v0); 209 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v); 210 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform1ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v); 211 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform2fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1); 212 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform2iProc)(GrGLint location, GrGLint v0, GrGLint v1); 213 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform2fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v); 214 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform2ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v); 215 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform3fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2); 216 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform3iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2); 217 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform3fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v); 218 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform3ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v); 219 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform4fProc)(GrGLint location, GrGLfloat v0, GrGLfloat v1, GrGLfloat v2, GrGLfloat v3); 220 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform4iProc)(GrGLint location, GrGLint v0, GrGLint v1, GrGLint v2, GrGLint v3); 221 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform4fvProc)(GrGLint location, GrGLsizei count, const GrGLfloat* v); 222 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniform4ivProc)(GrGLint location, GrGLsizei count, const GrGLint* v); 223 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniformMatrix2fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value); 224 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniformMatrix3fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value); 225 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUniformMatrix4fvProc)(GrGLint location, GrGLsizei count, GrGLboolean transpose, const GrGLfloat* value); 226 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLUseProgramProc)(GrGLuint program); 227 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLVertexAttrib4fvProc)(GrGLuint indx, const GrGLfloat* values); 228 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLVertexAttribPointerProc)(GrGLuint indx, GrGLint size, GrGLenum type, GrGLboolean normalized, GrGLsizei stride, const GrGLvoid* ptr); 229 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLViewportProc)(GrGLint x, GrGLint y, GrGLsizei width, GrGLsizei height); 230 231 // FBO Extension Functions 232 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindFramebufferProc)(GrGLenum target, GrGLuint framebuffer); 233 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindRenderbufferProc)(GrGLenum target, GrGLuint renderbuffer); 234 typedef GrGLenum (GR_GL_FUNCTION_TYPE *GrGLCheckFramebufferStatusProc)(GrGLenum target); 235 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteFramebuffersProc)(GrGLsizei n, const GrGLuint *framebuffers); 236 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLDeleteRenderbuffersProc)(GrGLsizei n, const GrGLuint *renderbuffers); 237 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFramebufferRenderbufferProc)(GrGLenum target, GrGLenum attachment, GrGLenum renderbuffertarget, GrGLuint renderbuffer); 238 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLFramebufferTexture2DProc)(GrGLenum target, GrGLenum attachment, GrGLenum textarget, GrGLuint texture, GrGLint level); 239 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenFramebuffersProc)(GrGLsizei n, GrGLuint *framebuffers); 240 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGenRenderbuffersProc)(GrGLsizei n, GrGLuint *renderbuffers); 241 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetFramebufferAttachmentParameterivProc)(GrGLenum target, GrGLenum attachment, GrGLenum pname, GrGLint* params); 242 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLGetRenderbufferParameterivProc)(GrGLenum target, GrGLenum pname, GrGLint* params); 243 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLRenderbufferStorageProc)(GrGLenum target, GrGLenum internalformat, GrGLsizei width, GrGLsizei height); 244 245 // Multisampling Extension Functions 246 // same prototype for ARB_FBO, EXT_FBO, GL 3.0, & Apple ES extension 247 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLRenderbufferStorageMultisampleProc)(GrGLenum target, GrGLsizei samples, GrGLenum internalformat, GrGLsizei width, GrGLsizei height); 248 // desktop: ext_fbo_blit, arb_fbo, gl 3.0 249 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); 250 // apple's es extension 251 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLResolveMultisampleFramebufferProc)(); 252 253 // Buffer mapping (extension in ES). 254 typedef GrGLvoid* (GR_GL_FUNCTION_TYPE *GrGLMapBufferProc)(GrGLenum target, GrGLenum access); 255 typedef GrGLboolean (GR_GL_FUNCTION_TYPE *GrGLUnmapBufferProc)(GrGLenum target); 256 257 // Dual source blending 258 typedef GrGLvoid (GR_GL_FUNCTION_TYPE *GrGLBindFragDataLocationIndexedProc)(GrGLuint program, GrGLuint colorNumber, GrGLuint index, const GrGLchar * name); 259 } // extern "C" 260 261 #if GR_GL_PER_GL_FUNC_CALLBACK 262 typedef void (*GrGLInterfaceCallbackProc)(const GrGLInterface*); 263 typedef intptr_t GrGLInterfaceCallbackData; 264 #endif 265 266 267 enum GrGLCapability { 268 kProbe_GrGLCapability = -1 269 }; 270 271 /* 272 * The following interface exports the OpenGL entry points used by the system. 273 * Use of OpenGL calls is disallowed. All calls should be invoked through 274 * the global instance of this struct, defined above. 275 * 276 * IMPORTANT NOTE: The OpenGL entry points exposed here include both core GL 277 * functions, and extensions. The system assumes that the address of the 278 * extension pointer will be valid across contexts. 279 */ 280 struct GR_API GrGLInterface : public GrRefCnt { 281 282 GrGLInterface(); 283 284 // Validates that the GrGLInterface supports a binding. This means that 285 // the GrGLinterface advertises the binding in fBindingsExported and all 286 // the necessary function pointers have been initialized. 287 bool validate(GrGLBinding binding) const; 288 289 // Indicator variable specifying the type of GL implementation 290 // exported: GLES{1|2} or Desktop. 291 GrGLBinding fBindingsExported; 292 293 GrGLActiveTextureProc fActiveTexture; 294 GrGLAttachShaderProc fAttachShader; 295 GrGLBeginQueryProc fBeginQuery; 296 GrGLBindAttribLocationProc fBindAttribLocation; 297 GrGLBindBufferProc fBindBuffer; 298 GrGLBindFragDataLocationProc fBindFragDataLocation; 299 GrGLBindTextureProc fBindTexture; 300 GrGLBlendColorProc fBlendColor; 301 GrGLBlendFuncProc fBlendFunc; 302 GrGLBufferDataProc fBufferData; 303 GrGLBufferSubDataProc fBufferSubData; 304 GrGLClearProc fClear; 305 GrGLClearColorProc fClearColor; 306 GrGLClearStencilProc fClearStencil; 307 GrGLColorMaskProc fColorMask; 308 GrGLColorPointerProc fColorPointer; 309 GrGLCompileShaderProc fCompileShader; 310 GrGLCompressedTexImage2DProc fCompressedTexImage2D; 311 GrGLCreateProgramProc fCreateProgram; 312 GrGLCreateShaderProc fCreateShader; 313 GrGLCullFaceProc fCullFace; 314 GrGLDeleteBuffersProc fDeleteBuffers; 315 GrGLDeleteProgramProc fDeleteProgram; 316 GrGLDeleteQueriesProc fDeleteQueries; 317 GrGLDeleteShaderProc fDeleteShader; 318 GrGLDeleteTexturesProc fDeleteTextures; 319 GrGLDepthMaskProc fDepthMask; 320 GrGLDisableProc fDisable; 321 GrGLDisableVertexAttribArrayProc fDisableVertexAttribArray; 322 GrGLDrawArraysProc fDrawArrays; 323 GrGLDrawBufferProc fDrawBuffer; 324 GrGLDrawBuffersProc fDrawBuffers; 325 GrGLDrawElementsProc fDrawElements; 326 GrGLEnableProc fEnable; 327 GrGLEnableVertexAttribArrayProc fEnableVertexAttribArray; 328 GrGLEndQueryProc fEndQuery; 329 GrGLFinishProc fFinish; 330 GrGLFlushProc fFlush; 331 GrGLFrontFaceProc fFrontFace; 332 GrGLGenBuffersProc fGenBuffers; 333 GrGLGenQueriesProc fGenQueries; 334 GrGLGenTexturesProc fGenTextures; 335 GrGLGetBufferParameterivProc fGetBufferParameteriv; 336 GrGLGetErrorProc fGetError; 337 GrGLGetIntegervProc fGetIntegerv; 338 GrGLGetQueryObjecti64vProc fGetQueryObjecti64v; 339 GrGLGetQueryObjectivProc fGetQueryObjectiv; 340 GrGLGetQueryObjectui64vProc fGetQueryObjectui64v; 341 GrGLGetQueryObjectuivProc fGetQueryObjectuiv; 342 GrGLGetQueryivProc fGetQueryiv; 343 GrGLGetProgramInfoLogProc fGetProgramInfoLog; 344 GrGLGetProgramivProc fGetProgramiv; 345 GrGLGetShaderInfoLogProc fGetShaderInfoLog; 346 GrGLGetShaderivProc fGetShaderiv; 347 GrGLGetStringProc fGetString; 348 GrGLGetTexLevelParameterivProc fGetTexLevelParameteriv; 349 GrGLGetUniformLocationProc fGetUniformLocation; 350 GrGLLineWidthProc fLineWidth; 351 GrGLLinkProgramProc fLinkProgram; 352 GrGLPixelStoreiProc fPixelStorei; 353 GrGLQueryCounterProc fQueryCounter; 354 GrGLReadBufferProc fReadBuffer; 355 GrGLReadPixelsProc fReadPixels; 356 GrGLScissorProc fScissor; 357 GrGLShaderSourceProc fShaderSource; 358 GrGLStencilFuncProc fStencilFunc; 359 GrGLStencilFuncSeparateProc fStencilFuncSeparate; 360 GrGLStencilMaskProc fStencilMask; 361 GrGLStencilMaskSeparateProc fStencilMaskSeparate; 362 GrGLStencilOpProc fStencilOp; 363 GrGLStencilOpSeparateProc fStencilOpSeparate; 364 GrGLTexImage2DProc fTexImage2D; 365 GrGLTexParameteriProc fTexParameteri; 366 GrGLTexSubImage2DProc fTexSubImage2D; 367 GrGLTexStorage2DProc fTexStorage2D; 368 GrGLUniform1fProc fUniform1f; 369 GrGLUniform1iProc fUniform1i; 370 GrGLUniform1fvProc fUniform1fv; 371 GrGLUniform1ivProc fUniform1iv; 372 GrGLUniform2fProc fUniform2f; 373 GrGLUniform2iProc fUniform2i; 374 GrGLUniform2fvProc fUniform2fv; 375 GrGLUniform2ivProc fUniform2iv; 376 GrGLUniform3fProc fUniform3f; 377 GrGLUniform3iProc fUniform3i; 378 GrGLUniform3fvProc fUniform3fv; 379 GrGLUniform3ivProc fUniform3iv; 380 GrGLUniform4fProc fUniform4f; 381 GrGLUniform4iProc fUniform4i; 382 GrGLUniform4fvProc fUniform4fv; 383 GrGLUniform4ivProc fUniform4iv; 384 GrGLUniformMatrix2fvProc fUniformMatrix2fv; 385 GrGLUniformMatrix3fvProc fUniformMatrix3fv; 386 GrGLUniformMatrix4fvProc fUniformMatrix4fv; 387 GrGLUseProgramProc fUseProgram; 388 GrGLVertexAttrib4fvProc fVertexAttrib4fv; 389 GrGLVertexAttribPointerProc fVertexAttribPointer; 390 GrGLViewportProc fViewport; 391 392 // FBO Extension Functions 393 GrGLBindFramebufferProc fBindFramebuffer; 394 GrGLBindRenderbufferProc fBindRenderbuffer; 395 GrGLCheckFramebufferStatusProc fCheckFramebufferStatus; 396 GrGLDeleteFramebuffersProc fDeleteFramebuffers; 397 GrGLDeleteRenderbuffersProc fDeleteRenderbuffers; 398 GrGLFramebufferRenderbufferProc fFramebufferRenderbuffer; 399 GrGLFramebufferTexture2DProc fFramebufferTexture2D; 400 GrGLGenFramebuffersProc fGenFramebuffers; 401 GrGLGenRenderbuffersProc fGenRenderbuffers; 402 GrGLGetFramebufferAttachmentParameterivProc fGetFramebufferAttachmentParameteriv; 403 GrGLGetRenderbufferParameterivProc fGetRenderbufferParameteriv; 404 GrGLRenderbufferStorageProc fRenderbufferStorage; 405 406 // Multisampling Extension Functions 407 // same prototype for ARB_FBO, EXT_FBO, GL 3.0, & Apple ES extension 408 GrGLRenderbufferStorageMultisampleProc fRenderbufferStorageMultisample; 409 // desktop: ext_fbo_blit, arb_fbo, gl 3.0 410 GrGLBlitFramebufferProc fBlitFramebuffer; 411 // apple's es extension 412 GrGLResolveMultisampleFramebufferProc fResolveMultisampleFramebuffer; 413 414 // Buffer mapping (extension in ES). 415 GrGLMapBufferProc fMapBuffer; 416 GrGLUnmapBufferProc fUnmapBuffer; 417 418 // Dual Source Blending 419 GrGLBindFragDataLocationIndexedProc fBindFragDataLocationIndexed; 420 421 // Per-GL func callback 422 #if GR_GL_PER_GL_FUNC_CALLBACK 423 GrGLInterfaceCallbackProc fCallback; 424 GrGLInterfaceCallbackData fCallbackData; 425 #endif 426 427 }; 428 429 #endif 430
