1 // Modified from chromium/src/webkit/glue/gl_bindings_skia_cmd_buffer.cc 2 3 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 4 // Use of this source code is governed by a BSD-style license that can be 5 // found in the LICENSE file. 6 7 #include "gl/GrGLInterface.h" 8 #include "gl/GrGLAssembleInterface.h" 9 #include "gl/GrGLExtensions.h" 10 #include "gl/GrGLUtil.h" 11 12 #ifndef GL_GLEXT_PROTOTYPES 13 #define GL_GLEXT_PROTOTYPES 14 #endif 15 16 #include <GLES2/gl2.h> 17 #include <GLES2/gl2ext.h> 18 19 #include <EGL/egl.h> 20 21 static GrGLInterface* create_es_interface(GrGLVersion version, 22 GrGLExtensions* extensions) { 23 if (version < GR_GL_VER(2,0)) { 24 return NULL; 25 } 26 27 GrGLInterface* interface = SkNEW(GrGLInterface); 28 interface->fStandard = kGLES_GrGLStandard; 29 GrGLInterface::Functions* functions = &interface->fFunctions; 30 31 functions->fActiveTexture = glActiveTexture; 32 functions->fAttachShader = glAttachShader; 33 functions->fBindAttribLocation = glBindAttribLocation; 34 functions->fBindBuffer = glBindBuffer; 35 functions->fBindTexture = glBindTexture; 36 functions->fBindVertexArray = glBindVertexArrayOES; 37 functions->fBlendColor = glBlendColor; 38 functions->fBlendFunc = glBlendFunc; 39 functions->fBufferData = glBufferData; 40 functions->fBufferSubData = glBufferSubData; 41 functions->fClear = glClear; 42 functions->fClearColor = glClearColor; 43 functions->fClearStencil = glClearStencil; 44 functions->fColorMask = glColorMask; 45 functions->fCompileShader = glCompileShader; 46 functions->fCompressedTexImage2D = glCompressedTexImage2D; 47 functions->fCompressedTexSubImage2D = glCompressedTexSubImage2D; 48 functions->fCopyTexSubImage2D = glCopyTexSubImage2D; 49 functions->fCreateProgram = glCreateProgram; 50 functions->fCreateShader = glCreateShader; 51 functions->fCullFace = glCullFace; 52 functions->fDeleteBuffers = glDeleteBuffers; 53 functions->fDeleteProgram = glDeleteProgram; 54 functions->fDeleteShader = glDeleteShader; 55 functions->fDeleteTextures = glDeleteTextures; 56 functions->fDeleteVertexArrays = glDeleteVertexArraysOES; 57 functions->fDepthMask = glDepthMask; 58 functions->fDisable = glDisable; 59 functions->fDisableVertexAttribArray = glDisableVertexAttribArray; 60 functions->fDrawArrays = glDrawArrays; 61 functions->fDrawElements = glDrawElements; 62 functions->fEnable = glEnable; 63 functions->fEnableVertexAttribArray = glEnableVertexAttribArray; 64 functions->fFinish = glFinish; 65 functions->fFlush = glFlush; 66 functions->fFrontFace = glFrontFace; 67 functions->fGenBuffers = glGenBuffers; 68 functions->fGenerateMipmap = glGenerateMipmap; 69 functions->fGenTextures = glGenTextures; 70 functions->fGenVertexArrays = glGenVertexArraysOES; 71 functions->fGetBufferParameteriv = glGetBufferParameteriv; 72 functions->fGetError = glGetError; 73 functions->fGetIntegerv = glGetIntegerv; 74 functions->fGetProgramInfoLog = glGetProgramInfoLog; 75 functions->fGetProgramiv = glGetProgramiv; 76 functions->fGetShaderInfoLog = glGetShaderInfoLog; 77 functions->fGetShaderiv = glGetShaderiv; 78 functions->fGetString = glGetString; 79 #if GL_ES_VERSION_3_0 80 functions->fGetStringi = glGetStringi; 81 #else 82 functions->fGetStringi = (GrGLGetStringiProc) eglGetProcAddress("glGetStringi"); 83 #endif 84 functions->fGetUniformLocation = glGetUniformLocation; 85 functions->fLineWidth = glLineWidth; 86 functions->fLinkProgram = glLinkProgram; 87 functions->fPixelStorei = glPixelStorei; 88 functions->fReadPixels = glReadPixels; 89 functions->fScissor = glScissor; 90 #if GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE 91 functions->fShaderSource = (GrGLShaderSourceProc) glShaderSource; 92 #else 93 functions->fShaderSource = glShaderSource; 94 #endif 95 functions->fStencilFunc = glStencilFunc; 96 functions->fStencilFuncSeparate = glStencilFuncSeparate; 97 functions->fStencilMask = glStencilMask; 98 functions->fStencilMaskSeparate = glStencilMaskSeparate; 99 functions->fStencilOp = glStencilOp; 100 functions->fStencilOpSeparate = glStencilOpSeparate; 101 functions->fTexImage2D = glTexImage2D; 102 functions->fTexParameteri = glTexParameteri; 103 functions->fTexParameteriv = glTexParameteriv; 104 functions->fTexSubImage2D = glTexSubImage2D; 105 106 if (version >= GR_GL_VER(3,0)) { 107 #if GL_ES_VERSION_3_0 108 functions->fTexStorage2D = glTexStorage2D; 109 #else 110 functions->fTexStorage2D = (GrGLTexStorage2DProc) eglGetProcAddress("glTexStorage2D"); 111 #endif 112 } else { 113 #if GL_EXT_texture_storage 114 functions->fTexStorage2D = glTexStorage2DEXT; 115 #else 116 functions->fTexStorage2D = (GrGLTexStorage2DProc) eglGetProcAddress("glTexStorage2DEXT"); 117 #endif 118 } 119 120 #if GL_EXT_discard_framebuffer 121 functions->fDiscardFramebuffer = glDiscardFramebufferEXT; 122 #endif 123 functions->fUniform1f = glUniform1f; 124 functions->fUniform1i = glUniform1i; 125 functions->fUniform1fv = glUniform1fv; 126 functions->fUniform1iv = glUniform1iv; 127 functions->fUniform2f = glUniform2f; 128 functions->fUniform2i = glUniform2i; 129 functions->fUniform2fv = glUniform2fv; 130 functions->fUniform2iv = glUniform2iv; 131 functions->fUniform3f = glUniform3f; 132 functions->fUniform3i = glUniform3i; 133 functions->fUniform3fv = glUniform3fv; 134 functions->fUniform3iv = glUniform3iv; 135 functions->fUniform4f = glUniform4f; 136 functions->fUniform4i = glUniform4i; 137 functions->fUniform4fv = glUniform4fv; 138 functions->fUniform4iv = glUniform4iv; 139 functions->fUniformMatrix2fv = glUniformMatrix2fv; 140 functions->fUniformMatrix3fv = glUniformMatrix3fv; 141 functions->fUniformMatrix4fv = glUniformMatrix4fv; 142 functions->fUseProgram = glUseProgram; 143 functions->fVertexAttrib4fv = glVertexAttrib4fv; 144 functions->fVertexAttribPointer = glVertexAttribPointer; 145 functions->fViewport = glViewport; 146 functions->fBindFramebuffer = glBindFramebuffer; 147 functions->fBindRenderbuffer = glBindRenderbuffer; 148 functions->fCheckFramebufferStatus = glCheckFramebufferStatus; 149 functions->fDeleteFramebuffers = glDeleteFramebuffers; 150 functions->fDeleteRenderbuffers = glDeleteRenderbuffers; 151 functions->fFramebufferRenderbuffer = glFramebufferRenderbuffer; 152 functions->fFramebufferTexture2D = glFramebufferTexture2D; 153 154 if (version >= GR_GL_VER(3,0)) { 155 #if GL_ES_VERSION_3_0 156 functions->fRenderbufferStorageMultisample = glRenderbufferStorageMultisample; 157 functions->fBlitFramebuffer = glBlitFramebuffer; 158 #else 159 functions->fRenderbufferStorageMultisample = (GrGLRenderbufferStorageMultisampleProc) eglGetProcAddress("glRenderbufferStorageMultisample"); 160 functions->fBlitFramebuffer = (GrGLBlitFramebufferProc) eglGetProcAddress("glBlitFramebuffer"); 161 #endif 162 } 163 164 if (extensions->has("GL_EXT_multisampled_render_to_texture")) { 165 #if GL_EXT_multisampled_render_to_texture 166 functions->fFramebufferTexture2DMultisample = glFramebufferTexture2DMultisampleEXT; 167 functions->fRenderbufferStorageMultisampleES2EXT = glRenderbufferStorageMultisampleEXT; 168 #else 169 functions->fFramebufferTexture2DMultisample = (GrGLFramebufferTexture2DMultisampleProc) eglGetProcAddress("glFramebufferTexture2DMultisampleEXT"); 170 functions->fRenderbufferStorageMultisampleES2EXT = (GrGLRenderbufferStorageMultisampleProc) eglGetProcAddress("glRenderbufferStorageMultisampleEXT"); 171 #endif 172 } else if (extensions->has("GL_IMG_multisampled_render_to_texture")) { 173 #if GL_IMG_multisampled_render_to_texture 174 functions->fFramebufferTexture2DMultisample = glFramebufferTexture2DMultisampleIMG; 175 functions->fRenderbufferStorageMultisampleES2EXT = glRenderbufferStorageMultisampleIMG; 176 #else 177 functions->fFramebufferTexture2DMultisample = (GrGLFramebufferTexture2DMultisampleProc) eglGetProcAddress("glFramebufferTexture2DMultisampleIMG"); 178 functions->fRenderbufferStorageMultisampleES2EXT = (GrGLRenderbufferStorageMultisampleProc) eglGetProcAddress("glRenderbufferStorageMultisampleIMG"); 179 #endif 180 } 181 182 functions->fGenFramebuffers = glGenFramebuffers; 183 functions->fGenRenderbuffers = glGenRenderbuffers; 184 functions->fGetFramebufferAttachmentParameteriv = glGetFramebufferAttachmentParameteriv; 185 functions->fGetRenderbufferParameteriv = glGetRenderbufferParameteriv; 186 functions->fRenderbufferStorage = glRenderbufferStorage; 187 188 #if GL_OES_mapbuffer 189 functions->fMapBuffer = glMapBufferOES; 190 functions->fUnmapBuffer = glUnmapBufferOES; 191 #else 192 functions->fMapBuffer = (GrGLMapBufferProc) eglGetProcAddress("glMapBufferOES"); 193 functions->fUnmapBuffer = (GrGLUnmapBufferProc) eglGetProcAddress("glUnmapBufferOES"); 194 195 #endif 196 197 if (version >= GR_GL_VER(3,0)) { 198 #if GL_ES_VERSION_3_0 199 functions->fMapBufferRange = glMapBufferRange; 200 functions->fFlushMappedBufferRange = glFlushMappedBufferRange; 201 #else 202 functions->fMapBufferRange = (GrGLMapBufferRangeProc) eglGetProcAddress("glMapBufferRange"); 203 functions->fFlushMappedBufferRange = (GrGLFlushMappedBufferRangeProc) eglGetProcAddress("glFlushMappedBufferRange"); 204 #endif 205 } else if (extensions->has("GL_EXT_map_buffer_range")) { 206 #if GL_EXT_map_buffer_range 207 functions->fMapBufferRange = glMapBufferRangeEXT; 208 functions->fFlushMappedBufferRange = glFlushMappedBufferRangeEXT; 209 #else 210 functions->fMapBufferRange = (GrGLMapBufferRangeProc) eglGetProcAddress("glMapBufferRangeEXT"); 211 functions->fFlushMappedBufferRange = (GrGLFlushMappedBufferRangeProc) eglGetProcAddress("glFlushMappedBufferRangeEXT"); 212 #endif 213 } 214 215 if (extensions->has("GL_EXT_debug_marker")) { 216 functions->fInsertEventMarker = (GrGLInsertEventMarkerProc) eglGetProcAddress("glInsertEventMarker"); 217 functions->fPushGroupMarker = (GrGLInsertEventMarkerProc) eglGetProcAddress("glPushGroupMarker"); 218 functions->fPopGroupMarker = (GrGLPopGroupMarkerProc) eglGetProcAddress("glPopGroupMarker"); 219 // The below check is here because a device has been found that has the extension string but 220 // returns NULL from the eglGetProcAddress for the functions 221 if (NULL == functions->fInsertEventMarker || 222 NULL == functions->fPushGroupMarker || 223 NULL == functions->fPopGroupMarker) { 224 extensions->remove("GL_EXT_debug_marker"); 225 } 226 } 227 228 #if GL_ES_VERSION_3_0 229 functions->fInvalidateFramebuffer = glInvalidateFramebuffer; 230 functions->fInvalidateSubFramebuffer = glInvalidateSubFramebuffer; 231 #else 232 functions->fInvalidateFramebuffer = (GrGLInvalidateFramebufferProc) eglGetProcAddress("glInvalidateFramebuffer"); 233 functions->fInvalidateSubFramebuffer = (GrGLInvalidateSubFramebufferProc) eglGetProcAddress("glInvalidateSubFramebuffer"); 234 #endif 235 functions->fInvalidateBufferData = (GrGLInvalidateBufferDataProc) eglGetProcAddress("glInvalidateBufferData"); 236 functions->fInvalidateBufferSubData = (GrGLInvalidateBufferSubDataProc) eglGetProcAddress("glInvalidateBufferSubData"); 237 functions->fInvalidateTexImage = (GrGLInvalidateTexImageProc) eglGetProcAddress("glInvalidateTexImage"); 238 functions->fInvalidateTexSubImage = (GrGLInvalidateTexSubImageProc) eglGetProcAddress("glInvalidateTexSubImage"); 239 240 return interface; 241 } 242 243 static GrGLFuncPtr android_get_gl_proc(void* ctx, const char name[]) { 244 SkASSERT(NULL == ctx); 245 return eglGetProcAddress(name); 246 } 247 248 static const GrGLInterface* create_desktop_interface() { 249 return GrGLAssembleGLInterface(NULL, android_get_gl_proc); 250 } 251 252 const GrGLInterface* GrGLCreateNativeInterface() { 253 254 const char* verStr = reinterpret_cast<const char*>(glGetString(GR_GL_VERSION)); 255 GrGLStandard standard = GrGLGetStandardInUseFromString(verStr); 256 257 if (kGLES_GrGLStandard == standard) { 258 GrGLVersion version = GrGLGetVersionFromString(verStr); 259 GrGLExtensions extensions; 260 GrGLGetStringiProc getStringi = (GrGLGetStringiProc) eglGetProcAddress("glGetStringi"); 261 if (!extensions.init(standard, glGetString, getStringi, glGetIntegerv)) { 262 return NULL; 263 } 264 GrGLInterface* interface = create_es_interface(version, &extensions); 265 266 if (NULL != interface) { 267 interface->fExtensions.swap(&extensions); 268 } 269 270 return interface; 271 } else if (kGL_GrGLStandard == standard) { 272 return create_desktop_interface(); 273 } 274 275 return NULL; 276 } 277
