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| 1 /* | 1 /* |
| 2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 | 8 |
| 9 #include "gl/GrGLInterface.h" | 9 #include "gl/GrGLInterface.h" |
| 10 #include "gl/GrGLExtensions.h" | 10 #include "gl/GrGLExtensions.h" |
| 11 #include "gl/GrGLUtil.h" | 11 #include "gl/GrGLUtil.h" |
| 12 | 12 |
| 13 #include <stdio.h> | 13 #include <stdio.h> |
| 14 | 14 |
| 15 #if GR_GL_PER_GL_FUNC_CALLBACK | 15 #if GR_GL_PER_GL_FUNC_CALLBACK |
| 16 namespace { | 16 namespace { |
| 17 void GrGLDefaultInterfaceCallback(const GrGLInterface*) {} | 17 void GrGLDefaultInterfaceCallback(const GrGLInterface*) {} |
| 18 } | 18 } |
| 19 #endif | 19 #endif |
| 20 | 20 |
| 21 GrGLInterface::GrGLInterface() { | 21 GrGLInterface::GrGLInterface() { |
| 22 fBindingsExported = kNone_GrGLBinding; | 22 fStandard = kNone_GrGLStandard; |
| 23 | 23 |
| 24 #if GR_GL_PER_GL_FUNC_CALLBACK | 24 #if GR_GL_PER_GL_FUNC_CALLBACK |
| 25 fCallback = GrGLDefaultInterfaceCallback; | 25 fCallback = GrGLDefaultInterfaceCallback; |
| 26 fCallbackData = 0; | 26 fCallbackData = 0; |
| 27 #endif | 27 #endif |
| 28 } | 28 } |
| 29 | 29 |
| 30 bool GrGLInterface::validate(GrGLBinding binding) const { | 30 bool GrGLInterface::validate() const { |
| 31 | 31 |
| 32 // kNone must be 0 so that the check we're about to do can never succeed if | 32 if (kNone_GrGLStandard == fStandard) { |
| 33 // binding == kNone. | |
| 34 GR_STATIC_ASSERT(kNone_GrGLBinding == 0); | |
| 35 | |
| 36 if (0 == (binding & fBindingsExported)) { | |
| 37 return false; | 33 return false; |
| 38 } | 34 } |
| 39 | 35 |
| 40 GrGLExtensions extensions; | 36 GrGLExtensions extensions; |
| 41 if (!extensions.init(binding, this)) { | 37 if (!extensions.init(this)) { |
| 42 return false; | 38 return false; |
| 43 } | 39 } |
| 44 | 40 |
| 45 // functions that are always required | 41 // functions that are always required |
| 46 if (NULL == fActiveTexture || | 42 if (NULL == fActiveTexture || |
| 47 NULL == fAttachShader || | 43 NULL == fAttachShader || |
| 48 NULL == fBindAttribLocation || | 44 NULL == fBindAttribLocation || |
| 49 NULL == fBindBuffer || | 45 NULL == fBindBuffer || |
| 50 NULL == fBindTexture || | 46 NULL == fBindTexture || |
| 51 NULL == fBlendFunc || | 47 NULL == fBlendFunc || |
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| 134 NULL == fGetRenderbufferParameteriv || | 130 NULL == fGetRenderbufferParameteriv || |
| 135 NULL == fGenFramebuffers || | 131 NULL == fGenFramebuffers || |
| 136 NULL == fGenRenderbuffers || | 132 NULL == fGenRenderbuffers || |
| 137 NULL == fRenderbufferStorage) { | 133 NULL == fRenderbufferStorage) { |
| 138 return false; | 134 return false; |
| 139 } | 135 } |
| 140 | 136 |
| 141 GrGLVersion glVer = GrGLGetVersion(this); | 137 GrGLVersion glVer = GrGLGetVersion(this); |
| 142 | 138 |
| 143 bool isCoreProfile = false; | 139 bool isCoreProfile = false; |
| 144 if (kDesktop_GrGLBinding == binding && glVer >= GR_GL_VER(3,2)) { | 140 if (kGL_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,2)) { |
| 145 GrGLint profileMask; | 141 GrGLint profileMask; |
| 146 GR_GL_GetIntegerv(this, GR_GL_CONTEXT_PROFILE_MASK, &profileMask); | 142 GR_GL_GetIntegerv(this, GR_GL_CONTEXT_PROFILE_MASK, &profileMask); |
| 147 isCoreProfile = SkToBool(profileMask & GR_GL_CONTEXT_CORE_PROFILE_BIT); | 143 isCoreProfile = SkToBool(profileMask & GR_GL_CONTEXT_CORE_PROFILE_BIT); |
| 148 } | 144 } |
| 149 | 145 |
| 150 // Now check that baseline ES/Desktop fns not covered above are present | 146 // Now check that baseline ES/Desktop fns not covered above are present |
| 151 // and that we have fn pointers for any advertised extensions that we will | 147 // and that we have fn pointers for any advertised extensions that we will |
| 152 // try to use. | 148 // try to use. |
| 153 | 149 |
| 154 // these functions are part of ES2, we assume they are available | 150 // these functions are part of ES2, we assume they are available |
| 155 // On the desktop we assume they are available if the extension | 151 // On the desktop we assume they are available if the extension |
| 156 // is present or GL version is high enough. | 152 // is present or GL version is high enough. |
| 157 if (kES_GrGLBinding == binding) { | 153 if (kGLES_GrGLStandard == fStandard) { |
| 158 if (NULL == fStencilFuncSeparate || | 154 if (NULL == fStencilFuncSeparate || |
| 159 NULL == fStencilMaskSeparate || | 155 NULL == fStencilMaskSeparate || |
| 160 NULL == fStencilOpSeparate) { | 156 NULL == fStencilOpSeparate) { |
| 161 return false; | 157 return false; |
| 162 } | 158 } |
| 163 } else if (kDesktop_GrGLBinding == binding) { | 159 } else if (kGL_GrGLStandard == fStandard) { |
| 164 | 160 |
| 165 if (glVer >= GR_GL_VER(2,0)) { | 161 if (glVer >= GR_GL_VER(2,0)) { |
| 166 if (NULL == fStencilFuncSeparate || | 162 if (NULL == fStencilFuncSeparate || |
| 167 NULL == fStencilMaskSeparate || | 163 NULL == fStencilMaskSeparate || |
| 168 NULL == fStencilOpSeparate) { | 164 NULL == fStencilOpSeparate) { |
| 169 return false; | 165 return false; |
| 170 } | 166 } |
| 171 } | 167 } |
| 172 if (glVer >= GR_GL_VER(3,0) && NULL == fBindFragDataLocation) { | 168 if (glVer >= GR_GL_VER(3,0) && NULL == fBindFragDataLocation) { |
| 173 return false; | 169 return false; |
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| 265 NULL == fIsPointInFillPath || | 261 NULL == fIsPointInFillPath || |
| 266 NULL == fIsPointInStrokePath || | 262 NULL == fIsPointInStrokePath || |
| 267 NULL == fGetPathLength || | 263 NULL == fGetPathLength || |
| 268 NULL == fPointAlongPath) { | 264 NULL == fPointAlongPath) { |
| 269 return false; | 265 return false; |
| 270 } | 266 } |
| 271 } | 267 } |
| 272 } | 268 } |
| 273 | 269 |
| 274 // optional function on desktop before 1.3 | 270 // optional function on desktop before 1.3 |
| 275 if (kDesktop_GrGLBinding != binding || | 271 if (kGL_GrGLStandard != fStandard || |
| 276 (glVer >= GR_GL_VER(1,3)) || | 272 (glVer >= GR_GL_VER(1,3)) || |
| 277 extensions.has("GL_ARB_texture_compression")) { | 273 extensions.has("GL_ARB_texture_compression")) { |
| 278 if (NULL == fCompressedTexImage2D) { | 274 if (NULL == fCompressedTexImage2D) { |
| 279 return false; | 275 return false; |
| 280 } | 276 } |
| 281 } | 277 } |
| 282 | 278 |
| 283 // part of desktop GL, but not ES | 279 // part of desktop GL, but not ES |
| 284 if (kDesktop_GrGLBinding == binding && | 280 if (kGL_GrGLStandard == fStandard && |
| 285 (NULL == fGetTexLevelParameteriv || | 281 (NULL == fGetTexLevelParameteriv || |
| 286 NULL == fDrawBuffer || | 282 NULL == fDrawBuffer || |
| 287 NULL == fReadBuffer)) { | 283 NULL == fReadBuffer)) { |
| 288 return false; | 284 return false; |
| 289 } | 285 } |
| 290 | 286 |
| 291 // GL_EXT_texture_storage is part of desktop 4.2 | 287 // GL_EXT_texture_storage is part of desktop 4.2 |
| 292 // There is a desktop ARB extension and an ES+desktop EXT extension | 288 // There is a desktop ARB extension and an ES+desktop EXT extension |
| 293 if (kDesktop_GrGLBinding == binding) { | 289 if (kGL_GrGLStandard == fStandard) { |
| 294 if (glVer >= GR_GL_VER(4,2) || | 290 if (glVer >= GR_GL_VER(4,2) || |
| 295 extensions.has("GL_ARB_texture_storage") || | 291 extensions.has("GL_ARB_texture_storage") || |
| 296 extensions.has("GL_EXT_texture_storage")) { | 292 extensions.has("GL_EXT_texture_storage")) { |
| 297 if (NULL == fTexStorage2D) { | 293 if (NULL == fTexStorage2D) { |
| 298 return false; | 294 return false; |
| 299 } | 295 } |
| 300 } | 296 } |
| 301 } else if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_EXT_texture_storage
")) { | 297 } else if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_EXT_texture_storage
")) { |
| 302 if (NULL == fTexStorage2D) { | 298 if (NULL == fTexStorage2D) { |
| 303 return false; | 299 return false; |
| 304 } | 300 } |
| 305 } | 301 } |
| 306 | 302 |
| 307 if (extensions.has("GL_EXT_discard_framebuffer")) { | 303 if (extensions.has("GL_EXT_discard_framebuffer")) { |
| 308 // FIXME: Remove this once Chromium is updated to provide this function | 304 // FIXME: Remove this once Chromium is updated to provide this function |
| 309 #if 0 | 305 #if 0 |
| 310 if (NULL == fDiscardFramebuffer) { | 306 if (NULL == fDiscardFramebuffer) { |
| 311 return false; | 307 return false; |
| 312 } | 308 } |
| 313 #endif | 309 #endif |
| 314 } | 310 } |
| 315 | 311 |
| 316 // FBO MSAA | 312 // FBO MSAA |
| 317 if (kDesktop_GrGLBinding == binding) { | 313 if (kGL_GrGLStandard == fStandard) { |
| 318 // GL 3.0 and the ARB extension have multisample + blit | 314 // GL 3.0 and the ARB extension have multisample + blit |
| 319 if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_framebuffer_object
")) { | 315 if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_ARB_framebuffer_object
")) { |
| 320 if (NULL == fRenderbufferStorageMultisample || | 316 if (NULL == fRenderbufferStorageMultisample || |
| 321 NULL == fBlitFramebuffer) { | 317 NULL == fBlitFramebuffer) { |
| 322 return false; | 318 return false; |
| 323 } | 319 } |
| 324 } else { | 320 } else { |
| 325 if (extensions.has("GL_EXT_framebuffer_blit") && | 321 if (extensions.has("GL_EXT_framebuffer_blit") && |
| 326 NULL == fBlitFramebuffer) { | 322 NULL == fBlitFramebuffer) { |
| 327 return false; | 323 return false; |
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| 369 NULL == fFramebufferTexture2DMultisample) { | 365 NULL == fFramebufferTexture2DMultisample) { |
| 370 return false; | 366 return false; |
| 371 } | 367 } |
| 372 } | 368 } |
| 373 #endif | 369 #endif |
| 374 } | 370 } |
| 375 | 371 |
| 376 // On ES buffer mapping is an extension. On Desktop | 372 // On ES buffer mapping is an extension. On Desktop |
| 377 // buffer mapping was part of original VBO extension | 373 // buffer mapping was part of original VBO extension |
| 378 // which we require. | 374 // which we require. |
| 379 if (kDesktop_GrGLBinding == binding || extensions.has("GL_OES_mapbuffer")) { | 375 if (kGL_GrGLStandard == fStandard || extensions.has("GL_OES_mapbuffer")) { |
| 380 if (NULL == fMapBuffer || | 376 if (NULL == fMapBuffer || |
| 381 NULL == fUnmapBuffer) { | 377 NULL == fUnmapBuffer) { |
| 382 return false; | 378 return false; |
| 383 } | 379 } |
| 384 } | 380 } |
| 385 | 381 |
| 386 // Dual source blending | 382 // Dual source blending |
| 387 if (kDesktop_GrGLBinding == binding && | 383 if (kGL_GrGLStandard == fStandard && |
| 388 (glVer >= GR_GL_VER(3,3) || extensions.has("GL_ARB_blend_func_extended")
)) { | 384 (glVer >= GR_GL_VER(3,3) || extensions.has("GL_ARB_blend_func_extended")
)) { |
| 389 if (NULL == fBindFragDataLocationIndexed) { | 385 if (NULL == fBindFragDataLocationIndexed) { |
| 390 return false; | 386 return false; |
| 391 } | 387 } |
| 392 } | 388 } |
| 393 | 389 |
| 394 // glGetStringi was added in version 3.0 of both desktop and ES. | 390 // glGetStringi was added in version 3.0 of both desktop and ES. |
| 395 if (glVer >= GR_GL_VER(3, 0)) { | 391 if (glVer >= GR_GL_VER(3, 0)) { |
| 396 if (NULL == fGetStringi) { | 392 if (NULL == fGetStringi) { |
| 397 return false; | 393 return false; |
| 398 } | 394 } |
| 399 } | 395 } |
| 400 | 396 |
| 401 if (kDesktop_GrGLBinding == binding) { | 397 if (kGL_GrGLStandard == fStandard) { |
| 402 if (glVer >= GR_GL_VER(3, 0) || extensions.has("GL_ARB_vertex_array_obje
ct")) { | 398 if (glVer >= GR_GL_VER(3, 0) || extensions.has("GL_ARB_vertex_array_obje
ct")) { |
| 403 if (NULL == fBindVertexArray || | 399 if (NULL == fBindVertexArray || |
| 404 NULL == fDeleteVertexArrays || | 400 NULL == fDeleteVertexArrays || |
| 405 NULL == fGenVertexArrays) { | 401 NULL == fGenVertexArrays) { |
| 406 return false; | 402 return false; |
| 407 } | 403 } |
| 408 } | 404 } |
| 409 } else { | 405 } else { |
| 410 if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_OES_vertex_array_objec
t")) { | 406 if (glVer >= GR_GL_VER(3,0) || extensions.has("GL_OES_vertex_array_objec
t")) { |
| 411 if (NULL == fBindVertexArray || | 407 if (NULL == fBindVertexArray || |
| 412 NULL == fDeleteVertexArrays || | 408 NULL == fDeleteVertexArrays || |
| 413 NULL == fGenVertexArrays) { | 409 NULL == fGenVertexArrays) { |
| 414 return false; | 410 return false; |
| 415 } | 411 } |
| 416 } | 412 } |
| 417 } | 413 } |
| 418 | 414 |
| 419 return true; | 415 return true; |
| 420 } | 416 } |
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