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 #include "gl/GrGLExtensions.h" 11 #include "gl/GrGLInterface.h" 12 #include "../GrGLUtil.h" 13 14 #include <GL/glx.h> 15 #include <GL/gl.h> 16 #include <GL/glext.h> 17 #include <GL/glu.h> 18 19 #define GR_GL_GET_PROC(F) interface->f ## F = (GrGL ## F ## Proc) \ 20 glXGetProcAddress(reinterpret_cast<const GLubyte*>("gl" #F)); 21 #define GR_GL_GET_PROC_SUFFIX(F, S) interface->f ## F = (GrGL ## F ## Proc) \ 22 glXGetProcAddress(reinterpret_cast<const GLubyte*>("gl" #F #S)); 23 24 const GrGLInterface* GrGLCreateNativeInterface() { 25 if (NULL != glXGetCurrentContext()) { 26 27 const char* versionString = (const char*) glGetString(GL_VERSION); 28 GrGLVersion glVer = GrGLGetVersionFromString(versionString); 29 30 // This may or may not succeed depending on the gl version. 31 GrGLGetStringiProc glGetStringi = 32 (GrGLGetStringiProc) glXGetProcAddress(reinterpret_cast<const GLubyte*>("glGetStringi")); 33 34 GrGLExtensions extensions; 35 if (!extensions.init(kDesktop_GrGLBinding, glGetString, glGetStringi, glGetIntegerv)) { 36 return NULL; 37 } 38 39 if (glVer < GR_GL_VER(1,5)) { 40 // We must have array and element_array buffer objects. 41 return NULL; 42 } 43 44 GrGLInterface* interface = new GrGLInterface(); 45 46 interface->fActiveTexture = glActiveTexture; 47 GR_GL_GET_PROC(AttachShader); 48 GR_GL_GET_PROC(BindAttribLocation); 49 GR_GL_GET_PROC(BindBuffer); 50 GR_GL_GET_PROC(BindFragDataLocation); 51 GR_GL_GET_PROC(BeginQuery); 52 interface->fBindTexture = glBindTexture; 53 interface->fBlendFunc = glBlendFunc; 54 55 if (glVer >= GR_GL_VER(1,4) || 56 extensions.has("GL_ARB_imaging") || 57 extensions.has("GL_EXT_blend_color")) { 58 GR_GL_GET_PROC(BlendColor); 59 } 60 61 GR_GL_GET_PROC(BufferData); 62 GR_GL_GET_PROC(BufferSubData); 63 interface->fClear = glClear; 64 interface->fClearColor = glClearColor; 65 interface->fClearStencil = glClearStencil; 66 interface->fColorMask = glColorMask; 67 GR_GL_GET_PROC(CompileShader); 68 interface->fCompressedTexImage2D = glCompressedTexImage2D; 69 interface->fCopyTexSubImage2D = glCopyTexSubImage2D; 70 GR_GL_GET_PROC(CreateProgram); 71 GR_GL_GET_PROC(CreateShader); 72 interface->fCullFace = glCullFace; 73 GR_GL_GET_PROC(DeleteBuffers); 74 GR_GL_GET_PROC(DeleteProgram); 75 GR_GL_GET_PROC(DeleteQueries); 76 GR_GL_GET_PROC(DeleteShader); 77 interface->fDeleteTextures = glDeleteTextures; 78 interface->fDepthMask = glDepthMask; 79 interface->fDisable = glDisable; 80 GR_GL_GET_PROC(DisableVertexAttribArray); 81 interface->fDrawArrays = glDrawArrays; 82 interface->fDrawBuffer = glDrawBuffer; 83 GR_GL_GET_PROC(DrawBuffers); 84 interface->fDrawElements = glDrawElements; 85 interface->fEnable = glEnable; 86 GR_GL_GET_PROC(EnableVertexAttribArray); 87 GR_GL_GET_PROC(EndQuery); 88 interface->fFinish = glFinish; 89 interface->fFlush = glFlush; 90 interface->fFrontFace = glFrontFace; 91 GR_GL_GET_PROC(GenBuffers); 92 GR_GL_GET_PROC(GenerateMipmap); 93 GR_GL_GET_PROC(GetBufferParameteriv); 94 interface->fGetError = glGetError; 95 interface->fGetIntegerv = glGetIntegerv; 96 GR_GL_GET_PROC(GetQueryObjectiv); 97 GR_GL_GET_PROC(GetQueryObjectuiv); 98 if (glVer >= GR_GL_VER(3,3) || extensions.has("GL_ARB_timer_query")) { 99 GR_GL_GET_PROC(GetQueryObjecti64v); 100 GR_GL_GET_PROC(GetQueryObjectui64v); 101 GR_GL_GET_PROC(QueryCounter); 102 } else if (extensions.has("GL_EXT_timer_query")) { 103 GR_GL_GET_PROC_SUFFIX(GetQueryObjecti64v, EXT); 104 GR_GL_GET_PROC_SUFFIX(GetQueryObjectui64v, EXT); 105 } 106 GR_GL_GET_PROC(GetQueryiv); 107 GR_GL_GET_PROC(GetProgramInfoLog); 108 GR_GL_GET_PROC(GetProgramiv); 109 GR_GL_GET_PROC(GetShaderInfoLog); 110 GR_GL_GET_PROC(GetShaderiv); 111 interface->fGetString = glGetString; 112 GR_GL_GET_PROC(GetStringi); 113 interface->fGetTexLevelParameteriv = glGetTexLevelParameteriv; 114 GR_GL_GET_PROC(GenQueries); 115 interface->fGenTextures = glGenTextures; 116 GR_GL_GET_PROC(GetUniformLocation); 117 interface->fLineWidth = glLineWidth; 118 GR_GL_GET_PROC(LinkProgram); 119 GR_GL_GET_PROC(MapBuffer); 120 interface->fPixelStorei = glPixelStorei; 121 interface->fReadBuffer = glReadBuffer; 122 interface->fReadPixels = glReadPixels; 123 if (extensions.has("GL_NV_framebuffer_multisample_coverage")) { 124 GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisampleCoverage, NV); 125 } 126 interface->fScissor = glScissor; 127 GR_GL_GET_PROC(ShaderSource); 128 interface->fStencilFunc = glStencilFunc; 129 GR_GL_GET_PROC(StencilFuncSeparate); 130 interface->fStencilMask = glStencilMask; 131 GR_GL_GET_PROC(StencilMaskSeparate); 132 interface->fStencilOp = glStencilOp; 133 GR_GL_GET_PROC(StencilOpSeparate); 134 interface->fTexImage2D = glTexImage2D; 135 interface->fTexParameteri = glTexParameteri; 136 interface->fTexParameteriv = glTexParameteriv; 137 if (glVer >= GR_GL_VER(4,2) || extensions.has("GL_ARB_texture_storage")) { 138 GR_GL_GET_PROC(TexStorage2D); 139 } else if (extensions.has("GL_EXT_texture_storage")) { 140 GR_GL_GET_PROC_SUFFIX(TexStorage2D, EXT); 141 } 142 interface->fTexSubImage2D = glTexSubImage2D; 143 GR_GL_GET_PROC(Uniform1f); 144 GR_GL_GET_PROC(Uniform1i); 145 GR_GL_GET_PROC(Uniform1fv); 146 GR_GL_GET_PROC(Uniform1iv); 147 GR_GL_GET_PROC(Uniform2f); 148 GR_GL_GET_PROC(Uniform2i); 149 GR_GL_GET_PROC(Uniform2fv); 150 GR_GL_GET_PROC(Uniform2iv); 151 GR_GL_GET_PROC(Uniform3f); 152 GR_GL_GET_PROC(Uniform3i); 153 GR_GL_GET_PROC(Uniform3fv); 154 GR_GL_GET_PROC(Uniform3iv); 155 GR_GL_GET_PROC(Uniform4f); 156 GR_GL_GET_PROC(Uniform4i); 157 GR_GL_GET_PROC(Uniform4fv); 158 GR_GL_GET_PROC(Uniform4iv); 159 GR_GL_GET_PROC(UniformMatrix2fv); 160 GR_GL_GET_PROC(UniformMatrix3fv); 161 GR_GL_GET_PROC(UniformMatrix4fv); 162 GR_GL_GET_PROC(UnmapBuffer); 163 GR_GL_GET_PROC(UseProgram); 164 GR_GL_GET_PROC(VertexAttrib4fv); 165 GR_GL_GET_PROC(VertexAttribPointer); 166 interface->fViewport = glViewport; 167 GR_GL_GET_PROC(BindFragDataLocationIndexed); 168 169 if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_vertex_array_object")) { 170 // no ARB suffix for GL_ARB_vertex_array_object 171 GR_GL_GET_PROC(BindVertexArray); 172 GR_GL_GET_PROC(GenVertexArrays); 173 GR_GL_GET_PROC(DeleteVertexArrays); 174 } 175 176 // First look for GL3.0 FBO or GL_ARB_framebuffer_object (same since 177 // GL_ARB_framebuffer_object doesn't use ARB suffix.) 178 if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_framebuffer_object")) { 179 GR_GL_GET_PROC(GenFramebuffers); 180 GR_GL_GET_PROC(GetFramebufferAttachmentParameteriv); 181 GR_GL_GET_PROC(GetRenderbufferParameteriv); 182 GR_GL_GET_PROC(BindFramebuffer); 183 GR_GL_GET_PROC(FramebufferTexture2D); 184 GR_GL_GET_PROC(CheckFramebufferStatus); 185 GR_GL_GET_PROC(DeleteFramebuffers); 186 GR_GL_GET_PROC(RenderbufferStorage); 187 GR_GL_GET_PROC(GenRenderbuffers); 188 GR_GL_GET_PROC(DeleteRenderbuffers); 189 GR_GL_GET_PROC(FramebufferRenderbuffer); 190 GR_GL_GET_PROC(BindRenderbuffer); 191 GR_GL_GET_PROC(RenderbufferStorageMultisample); 192 GR_GL_GET_PROC(BlitFramebuffer); 193 } else if (extensions.has("GL_EXT_framebuffer_object")) { 194 GR_GL_GET_PROC_SUFFIX(GenFramebuffers, EXT); 195 GR_GL_GET_PROC_SUFFIX(GetFramebufferAttachmentParameteriv, EXT); 196 GR_GL_GET_PROC_SUFFIX(GetRenderbufferParameteriv, EXT); 197 GR_GL_GET_PROC_SUFFIX(BindFramebuffer, EXT); 198 GR_GL_GET_PROC_SUFFIX(FramebufferTexture2D, EXT); 199 GR_GL_GET_PROC_SUFFIX(CheckFramebufferStatus, EXT); 200 GR_GL_GET_PROC_SUFFIX(DeleteFramebuffers, EXT); 201 GR_GL_GET_PROC_SUFFIX(RenderbufferStorage, EXT); 202 GR_GL_GET_PROC_SUFFIX(GenRenderbuffers, EXT); 203 GR_GL_GET_PROC_SUFFIX(DeleteRenderbuffers, EXT); 204 GR_GL_GET_PROC_SUFFIX(FramebufferRenderbuffer, EXT); 205 GR_GL_GET_PROC_SUFFIX(BindRenderbuffer, EXT); 206 if (extensions.has("GL_EXT_framebuffer_multisample")) { 207 GR_GL_GET_PROC_SUFFIX(RenderbufferStorageMultisample, EXT); 208 } 209 if (extensions.has("GL_EXT_framebuffer_blit")) { 210 GR_GL_GET_PROC_SUFFIX(BlitFramebuffer, EXT); 211 } 212 } else { 213 // we must have FBOs 214 delete interface; 215 return NULL; 216 } 217 218 GR_GL_GET_PROC(LoadIdentity); 219 GR_GL_GET_PROC(LoadMatrixf); 220 GR_GL_GET_PROC(MatrixMode); 221 222 if (extensions.has("GL_NV_path_rendering")) { 223 GR_GL_GET_PROC_SUFFIX(PathCommands, NV); 224 GR_GL_GET_PROC_SUFFIX(PathCoords, NV); 225 GR_GL_GET_PROC_SUFFIX(PathSubCommands, NV); 226 GR_GL_GET_PROC_SUFFIX(PathSubCoords, NV); 227 GR_GL_GET_PROC_SUFFIX(PathString, NV); 228 GR_GL_GET_PROC_SUFFIX(PathGlyphs, NV); 229 GR_GL_GET_PROC_SUFFIX(PathGlyphRange, NV); 230 GR_GL_GET_PROC_SUFFIX(WeightPaths, NV); 231 GR_GL_GET_PROC_SUFFIX(CopyPath, NV); 232 GR_GL_GET_PROC_SUFFIX(InterpolatePaths, NV); 233 GR_GL_GET_PROC_SUFFIX(TransformPath, NV); 234 GR_GL_GET_PROC_SUFFIX(PathParameteriv, NV); 235 GR_GL_GET_PROC_SUFFIX(PathParameteri, NV); 236 GR_GL_GET_PROC_SUFFIX(PathParameterfv, NV); 237 GR_GL_GET_PROC_SUFFIX(PathParameterf, NV); 238 GR_GL_GET_PROC_SUFFIX(PathDashArray, NV); 239 GR_GL_GET_PROC_SUFFIX(GenPaths, NV); 240 GR_GL_GET_PROC_SUFFIX(DeletePaths, NV); 241 GR_GL_GET_PROC_SUFFIX(IsPath, NV); 242 GR_GL_GET_PROC_SUFFIX(PathStencilFunc, NV); 243 GR_GL_GET_PROC_SUFFIX(PathStencilDepthOffset, NV); 244 GR_GL_GET_PROC_SUFFIX(StencilFillPath, NV); 245 GR_GL_GET_PROC_SUFFIX(StencilStrokePath, NV); 246 GR_GL_GET_PROC_SUFFIX(StencilFillPathInstanced, NV); 247 GR_GL_GET_PROC_SUFFIX(StencilStrokePathInstanced, NV); 248 GR_GL_GET_PROC_SUFFIX(PathCoverDepthFunc, NV); 249 GR_GL_GET_PROC_SUFFIX(PathColorGen, NV); 250 GR_GL_GET_PROC_SUFFIX(PathTexGen, NV); 251 GR_GL_GET_PROC_SUFFIX(PathFogGen, NV); 252 GR_GL_GET_PROC_SUFFIX(CoverFillPath, NV); 253 GR_GL_GET_PROC_SUFFIX(CoverStrokePath, NV); 254 GR_GL_GET_PROC_SUFFIX(CoverFillPathInstanced, NV); 255 GR_GL_GET_PROC_SUFFIX(CoverStrokePathInstanced, NV); 256 GR_GL_GET_PROC_SUFFIX(GetPathParameteriv, NV); 257 GR_GL_GET_PROC_SUFFIX(GetPathParameterfv, NV); 258 GR_GL_GET_PROC_SUFFIX(GetPathCommands, NV); 259 GR_GL_GET_PROC_SUFFIX(GetPathCoords, NV); 260 GR_GL_GET_PROC_SUFFIX(GetPathDashArray, NV); 261 GR_GL_GET_PROC_SUFFIX(GetPathMetrics, NV); 262 GR_GL_GET_PROC_SUFFIX(GetPathMetricRange, NV); 263 GR_GL_GET_PROC_SUFFIX(GetPathSpacing, NV); 264 GR_GL_GET_PROC_SUFFIX(GetPathColorGeniv, NV); 265 GR_GL_GET_PROC_SUFFIX(GetPathColorGenfv, NV); 266 GR_GL_GET_PROC_SUFFIX(GetPathTexGeniv, NV); 267 GR_GL_GET_PROC_SUFFIX(GetPathTexGenfv, NV); 268 GR_GL_GET_PROC_SUFFIX(IsPointInFillPath, NV); 269 GR_GL_GET_PROC_SUFFIX(IsPointInStrokePath, NV); 270 GR_GL_GET_PROC_SUFFIX(GetPathLength, NV); 271 GR_GL_GET_PROC_SUFFIX(PointAlongPath, NV); 272 } 273 274 interface->fBindingsExported = kDesktop_GrGLBinding; 275 276 return interface; 277 } else { 278 return NULL; 279 } 280 } 281
