2 * Copyright 2011 Google Inc.
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
9 #include "gl/GrGLInterface.h"
10 #include "gl/GrGLExtensions.h"
11 #include "gl/GrGLUtil.h"
15 #if GR_GL_PER_GL_FUNC_CALLBACK
17 void GrGLDefaultInterfaceCallback(const GrGLInterface*) {}
21 const GrGLInterface* GrGLInterfaceAddTestDebugMarker(const GrGLInterface* interface,
22 GrGLInsertEventMarkerProc insertEventMarkerFn,
23 GrGLPushGroupMarkerProc pushGroupMarkerFn,
24 GrGLPopGroupMarkerProc popGroupMarkerFn) {
25 GrGLInterface* newInterface = GrGLInterface::NewClone(interface);
27 if (!newInterface->fExtensions.has("GL_EXT_debug_marker")) {
28 newInterface->fExtensions.add("GL_EXT_debug_marker");
31 newInterface->fFunctions.fInsertEventMarker = insertEventMarkerFn;
32 newInterface->fFunctions.fPushGroupMarker = pushGroupMarkerFn;
33 newInterface->fFunctions.fPopGroupMarker = popGroupMarkerFn;
38 const GrGLInterface* GrGLInterfaceRemoveNVPR(const GrGLInterface* interface) {
39 GrGLInterface* newInterface = GrGLInterface::NewClone(interface);
41 newInterface->fExtensions.remove("GL_NV_path_rendering");
42 newInterface->fFunctions.fPathCommands = NULL;
43 newInterface->fFunctions.fPathCoords = NULL;
44 newInterface->fFunctions.fPathParameteri = NULL;
45 newInterface->fFunctions.fPathParameterf = NULL;
46 newInterface->fFunctions.fGenPaths = NULL;
47 newInterface->fFunctions.fDeletePaths = NULL;
48 newInterface->fFunctions.fIsPath = NULL;
49 newInterface->fFunctions.fPathStencilFunc = NULL;
50 newInterface->fFunctions.fStencilFillPath = NULL;
51 newInterface->fFunctions.fStencilStrokePath = NULL;
52 newInterface->fFunctions.fStencilFillPathInstanced = NULL;
53 newInterface->fFunctions.fStencilStrokePathInstanced = NULL;
54 newInterface->fFunctions.fPathTexGen = NULL;
55 newInterface->fFunctions.fCoverFillPath = NULL;
56 newInterface->fFunctions.fCoverStrokePath = NULL;
57 newInterface->fFunctions.fCoverFillPathInstanced = NULL;
58 newInterface->fFunctions.fCoverStrokePathInstanced = NULL;
59 newInterface->fFunctions.fStencilThenCoverFillPath = NULL;
60 newInterface->fFunctions.fStencilThenCoverStrokePath = NULL;
61 newInterface->fFunctions.fStencilThenCoverFillPathInstanced = NULL;
62 newInterface->fFunctions.fStencilThenCoverStrokePathInstanced = NULL;
63 newInterface->fFunctions.fProgramPathFragmentInputGen = NULL;
67 GrGLInterface::GrGLInterface() {
68 fStandard = kNone_GrGLStandard;
70 #if GR_GL_PER_GL_FUNC_CALLBACK
71 fCallback = GrGLDefaultInterfaceCallback;
76 GrGLInterface* GrGLInterface::NewClone(const GrGLInterface* interface) {
77 SkASSERT(NULL != interface);
79 GrGLInterface* clone = SkNEW(GrGLInterface);
80 clone->fStandard = interface->fStandard;
81 clone->fExtensions = interface->fExtensions;
82 clone->fFunctions = interface->fFunctions;
83 #if GR_GL_PER_GL_FUNC_CALLBACK
84 clone->fCallback = interface->fCallback;
85 clone->fCallbackData = interface->fCallbackData;
91 static int kIsDebug = 1;
93 static int kIsDebug = 0;
96 #define RETURN_FALSE_INTERFACE \
97 if (kIsDebug) { SkDebugf("%s:%d GrGLInterface::validate() failed.\n", __FILE__, __LINE__); } \
100 bool GrGLInterface::validate() const {
102 if (kNone_GrGLStandard == fStandard) {
103 RETURN_FALSE_INTERFACE
106 if (!fExtensions.isInitialized()) {
107 RETURN_FALSE_INTERFACE
110 // functions that are always required
111 if (NULL == fFunctions.fActiveTexture ||
112 NULL == fFunctions.fAttachShader ||
113 NULL == fFunctions.fBindAttribLocation ||
114 NULL == fFunctions.fBindBuffer ||
115 NULL == fFunctions.fBindTexture ||
116 NULL == fFunctions.fBlendFunc ||
117 NULL == fFunctions.fBlendColor || // -> GL >= 1.4, ES >= 2.0 or extension
118 NULL == fFunctions.fBufferData ||
119 NULL == fFunctions.fBufferSubData ||
120 NULL == fFunctions.fClear ||
121 NULL == fFunctions.fClearColor ||
122 NULL == fFunctions.fClearStencil ||
123 NULL == fFunctions.fColorMask ||
124 NULL == fFunctions.fCompileShader ||
125 NULL == fFunctions.fCopyTexSubImage2D ||
126 NULL == fFunctions.fCreateProgram ||
127 NULL == fFunctions.fCreateShader ||
128 NULL == fFunctions.fCullFace ||
129 NULL == fFunctions.fDeleteBuffers ||
130 NULL == fFunctions.fDeleteProgram ||
131 NULL == fFunctions.fDeleteShader ||
132 NULL == fFunctions.fDeleteTextures ||
133 NULL == fFunctions.fDepthMask ||
134 NULL == fFunctions.fDisable ||
135 NULL == fFunctions.fDisableVertexAttribArray ||
136 NULL == fFunctions.fDrawArrays ||
137 NULL == fFunctions.fDrawElements ||
138 NULL == fFunctions.fEnable ||
139 NULL == fFunctions.fEnableVertexAttribArray ||
140 NULL == fFunctions.fFrontFace ||
141 NULL == fFunctions.fGenBuffers ||
142 NULL == fFunctions.fGenTextures ||
143 NULL == fFunctions.fGetBufferParameteriv ||
144 NULL == fFunctions.fGenerateMipmap ||
145 NULL == fFunctions.fGetError ||
146 NULL == fFunctions.fGetIntegerv ||
147 NULL == fFunctions.fGetProgramInfoLog ||
148 NULL == fFunctions.fGetProgramiv ||
149 NULL == fFunctions.fGetShaderInfoLog ||
150 NULL == fFunctions.fGetShaderiv ||
151 NULL == fFunctions.fGetString ||
152 NULL == fFunctions.fGetUniformLocation ||
153 NULL == fFunctions.fLinkProgram ||
154 NULL == fFunctions.fLineWidth ||
155 NULL == fFunctions.fPixelStorei ||
156 NULL == fFunctions.fReadPixels ||
157 NULL == fFunctions.fScissor ||
158 NULL == fFunctions.fShaderSource ||
159 NULL == fFunctions.fStencilFunc ||
160 NULL == fFunctions.fStencilMask ||
161 NULL == fFunctions.fStencilOp ||
162 NULL == fFunctions.fTexImage2D ||
163 NULL == fFunctions.fTexParameteri ||
164 NULL == fFunctions.fTexParameteriv ||
165 NULL == fFunctions.fTexSubImage2D ||
166 NULL == fFunctions.fUniform1f ||
167 NULL == fFunctions.fUniform1i ||
168 NULL == fFunctions.fUniform1fv ||
169 NULL == fFunctions.fUniform1iv ||
170 NULL == fFunctions.fUniform2f ||
171 NULL == fFunctions.fUniform2i ||
172 NULL == fFunctions.fUniform2fv ||
173 NULL == fFunctions.fUniform2iv ||
174 NULL == fFunctions.fUniform3f ||
175 NULL == fFunctions.fUniform3i ||
176 NULL == fFunctions.fUniform3fv ||
177 NULL == fFunctions.fUniform3iv ||
178 NULL == fFunctions.fUniform4f ||
179 NULL == fFunctions.fUniform4i ||
180 NULL == fFunctions.fUniform4fv ||
181 NULL == fFunctions.fUniform4iv ||
182 NULL == fFunctions.fUniformMatrix2fv ||
183 NULL == fFunctions.fUniformMatrix3fv ||
184 NULL == fFunctions.fUniformMatrix4fv ||
185 NULL == fFunctions.fUseProgram ||
186 NULL == fFunctions.fVertexAttrib4fv ||
187 NULL == fFunctions.fVertexAttribPointer ||
188 NULL == fFunctions.fViewport ||
189 NULL == fFunctions.fBindFramebuffer ||
190 NULL == fFunctions.fBindRenderbuffer ||
191 NULL == fFunctions.fCheckFramebufferStatus ||
192 NULL == fFunctions.fDeleteFramebuffers ||
193 NULL == fFunctions.fDeleteRenderbuffers ||
194 NULL == fFunctions.fFinish ||
195 NULL == fFunctions.fFlush ||
196 NULL == fFunctions.fFramebufferRenderbuffer ||
197 NULL == fFunctions.fFramebufferTexture2D ||
198 NULL == fFunctions.fGetFramebufferAttachmentParameteriv ||
199 NULL == fFunctions.fGetRenderbufferParameteriv ||
200 NULL == fFunctions.fGenFramebuffers ||
201 NULL == fFunctions.fGenRenderbuffers ||
202 NULL == fFunctions.fRenderbufferStorage) {
203 RETURN_FALSE_INTERFACE
206 GrGLVersion glVer = GrGLGetVersion(this);
207 if (GR_GL_INVALID_VER == glVer) {
208 RETURN_FALSE_INTERFACE
211 // Now check that baseline ES/Desktop fns not covered above are present
212 // and that we have fn pointers for any advertised fExtensions that we will
215 // these functions are part of ES2, we assume they are available
216 // On the desktop we assume they are available if the extension
217 // is present or GL version is high enough.
218 if (kGLES_GrGLStandard == fStandard) {
219 if (NULL == fFunctions.fStencilFuncSeparate ||
220 NULL == fFunctions.fStencilMaskSeparate ||
221 NULL == fFunctions.fStencilOpSeparate) {
222 RETURN_FALSE_INTERFACE
224 } else if (kGL_GrGLStandard == fStandard) {
226 if (glVer >= GR_GL_VER(2,0)) {
227 if (NULL == fFunctions.fStencilFuncSeparate ||
228 NULL == fFunctions.fStencilMaskSeparate ||
229 NULL == fFunctions.fStencilOpSeparate) {
230 RETURN_FALSE_INTERFACE
233 if (glVer >= GR_GL_VER(3,0) && NULL == fFunctions.fBindFragDataLocation) {
234 RETURN_FALSE_INTERFACE
236 if (glVer >= GR_GL_VER(2,0) || fExtensions.has("GL_ARB_draw_buffers")) {
237 if (NULL == fFunctions.fDrawBuffers) {
238 RETURN_FALSE_INTERFACE
242 if (glVer >= GR_GL_VER(1,5) || fExtensions.has("GL_ARB_occlusion_query")) {
243 if (NULL == fFunctions.fGenQueries ||
244 NULL == fFunctions.fDeleteQueries ||
245 NULL == fFunctions.fBeginQuery ||
246 NULL == fFunctions.fEndQuery ||
247 NULL == fFunctions.fGetQueryiv ||
248 NULL == fFunctions.fGetQueryObjectiv ||
249 NULL == fFunctions.fGetQueryObjectuiv) {
250 RETURN_FALSE_INTERFACE
253 if (glVer >= GR_GL_VER(3,3) ||
254 fExtensions.has("GL_ARB_timer_query") ||
255 fExtensions.has("GL_EXT_timer_query")) {
256 if (NULL == fFunctions.fGetQueryObjecti64v ||
257 NULL == fFunctions.fGetQueryObjectui64v) {
258 RETURN_FALSE_INTERFACE
261 if (glVer >= GR_GL_VER(3,3) || fExtensions.has("GL_ARB_timer_query")) {
262 if (NULL == fFunctions.fQueryCounter) {
263 RETURN_FALSE_INTERFACE
268 // optional function on desktop before 1.3
269 if (kGL_GrGLStandard != fStandard ||
270 (glVer >= GR_GL_VER(1,3)) ||
271 fExtensions.has("GL_ARB_texture_compression")) {
272 if (NULL == fFunctions.fCompressedTexImage2D
274 || NULL == fFunctions.fCompressedTexSubImage2D
277 RETURN_FALSE_INTERFACE
281 // part of desktop GL, but not ES
282 if (kGL_GrGLStandard == fStandard &&
283 (NULL == fFunctions.fGetTexLevelParameteriv ||
284 NULL == fFunctions.fDrawBuffer ||
285 NULL == fFunctions.fReadBuffer)) {
286 RETURN_FALSE_INTERFACE
289 // GL_EXT_texture_storage is part of desktop 4.2
290 // There is a desktop ARB extension and an ES+desktop EXT extension
291 if (kGL_GrGLStandard == fStandard) {
292 if (glVer >= GR_GL_VER(4,2) ||
293 fExtensions.has("GL_ARB_texture_storage") ||
294 fExtensions.has("GL_EXT_texture_storage")) {
295 if (NULL == fFunctions.fTexStorage2D) {
296 RETURN_FALSE_INTERFACE
299 } else if (glVer >= GR_GL_VER(3,0) || fExtensions.has("GL_EXT_texture_storage")) {
300 if (NULL == fFunctions.fTexStorage2D) {
301 RETURN_FALSE_INTERFACE
305 if (fExtensions.has("GL_EXT_discard_framebuffer")) {
306 // FIXME: Remove this once Chromium is updated to provide this function
308 if (NULL == fFunctions.fDiscardFramebuffer) {
309 RETURN_FALSE_INTERFACE
315 if (kGL_GrGLStandard == fStandard) {
316 // GL 3.0 and the ARB extension have multisample + blit
317 if (glVer >= GR_GL_VER(3,0) || fExtensions.has("GL_ARB_framebuffer_object")) {
318 if (NULL == fFunctions.fRenderbufferStorageMultisample ||
319 NULL == fFunctions.fBlitFramebuffer) {
320 RETURN_FALSE_INTERFACE
323 if (fExtensions.has("GL_EXT_framebuffer_blit") &&
324 NULL == fFunctions.fBlitFramebuffer) {
325 RETURN_FALSE_INTERFACE
327 if (fExtensions.has("GL_EXT_framebuffer_multisample") &&
328 NULL == fFunctions.fRenderbufferStorageMultisample) {
329 RETURN_FALSE_INTERFACE
333 if (glVer >= GR_GL_VER(3,0) || fExtensions.has("GL_CHROMIUM_framebuffer_multisample")) {
334 if (NULL == fFunctions.fRenderbufferStorageMultisample ||
335 NULL == fFunctions.fBlitFramebuffer) {
336 RETURN_FALSE_INTERFACE
339 if (fExtensions.has("GL_APPLE_framebuffer_multisample")) {
340 if (NULL == fFunctions.fRenderbufferStorageMultisampleES2APPLE ||
341 NULL == fFunctions.fResolveMultisampleFramebuffer) {
342 RETURN_FALSE_INTERFACE
345 if (fExtensions.has("GL_IMG_multisampled_render_to_texture") ||
346 fExtensions.has("GL_EXT_multisampled_render_to_texture")) {
347 if (NULL == fFunctions.fRenderbufferStorageMultisampleES2EXT ||
348 NULL == fFunctions.fFramebufferTexture2DMultisample) {
349 RETURN_FALSE_INTERFACE
354 // On ES buffer mapping is an extension. On Desktop
355 // buffer mapping was part of original VBO extension
357 if (kGL_GrGLStandard == fStandard || fExtensions.has("GL_OES_mapbuffer")) {
358 if (NULL == fFunctions.fMapBuffer ||
359 NULL == fFunctions.fUnmapBuffer) {
360 RETURN_FALSE_INTERFACE
364 // Dual source blending
365 if (kGL_GrGLStandard == fStandard &&
366 (glVer >= GR_GL_VER(3,3) || fExtensions.has("GL_ARB_blend_func_extended"))) {
367 if (NULL == fFunctions.fBindFragDataLocationIndexed) {
368 RETURN_FALSE_INTERFACE
372 // glGetStringi was added in version 3.0 of both desktop and ES.
373 if (glVer >= GR_GL_VER(3, 0)) {
374 if (NULL == fFunctions.fGetStringi) {
375 RETURN_FALSE_INTERFACE
379 if (kGL_GrGLStandard == fStandard) {
380 if (glVer >= GR_GL_VER(3, 0) || fExtensions.has("GL_ARB_vertex_array_object")) {
381 if (NULL == fFunctions.fBindVertexArray ||
382 NULL == fFunctions.fDeleteVertexArrays ||
383 NULL == fFunctions.fGenVertexArrays) {
384 RETURN_FALSE_INTERFACE
388 if (glVer >= GR_GL_VER(3,0) || fExtensions.has("GL_OES_vertex_array_object")) {
389 if (NULL == fFunctions.fBindVertexArray ||
390 NULL == fFunctions.fDeleteVertexArrays ||
391 NULL == fFunctions.fGenVertexArrays) {
392 RETURN_FALSE_INTERFACE
397 if (fExtensions.has("GL_EXT_debug_marker")) {
398 if (NULL == fFunctions.fInsertEventMarker ||
399 NULL == fFunctions.fPushGroupMarker ||
400 NULL == fFunctions.fPopGroupMarker) {
401 RETURN_FALSE_INTERFACE
405 if ((kGL_GrGLStandard == fStandard && glVer >= GR_GL_VER(4,3)) ||
406 fExtensions.has("GL_ARB_invalidate_subdata")) {
407 if (NULL == fFunctions.fInvalidateBufferData ||
408 NULL == fFunctions.fInvalidateBufferSubData ||
409 NULL == fFunctions.fInvalidateFramebuffer ||
410 NULL == fFunctions.fInvalidateSubFramebuffer ||
411 NULL == fFunctions.fInvalidateTexImage ||
412 NULL == fFunctions.fInvalidateTexSubImage) {
413 RETURN_FALSE_INTERFACE;
415 } else if (kGLES_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,0)) {
416 // ES 3.0 adds the framebuffer functions but not the others.
417 if (NULL == fFunctions.fInvalidateFramebuffer ||
418 NULL == fFunctions.fInvalidateSubFramebuffer) {
419 RETURN_FALSE_INTERFACE;
423 if (kGLES_GrGLStandard == fStandard && fExtensions.has("GL_CHROMIUM_map_sub")) {
424 if (NULL == fFunctions.fMapBufferSubData ||
425 NULL == fFunctions.fMapTexSubImage2D ||
426 NULL == fFunctions.fUnmapBufferSubData ||
427 NULL == fFunctions.fUnmapTexSubImage2D) {
428 RETURN_FALSE_INTERFACE;
432 // These functions are added to the 3.0 version of both GLES and GL.
433 if (glVer >= GR_GL_VER(3,0) ||
434 (kGLES_GrGLStandard == fStandard && fExtensions.has("GL_EXT_map_buffer_range")) ||
435 (kGL_GrGLStandard == fStandard && fExtensions.has("GL_ARB_map_buffer_range"))) {
436 if (NULL == fFunctions.fMapBufferRange ||
437 NULL == fFunctions.fFlushMappedBufferRange) {
438 RETURN_FALSE_INTERFACE;
442 if ((kGL_GrGLStandard == fStandard && fExtensions.has("GL_EXT_direct_state_access")) ||
443 (kGLES_GrGLStandard == fStandard && fExtensions.has("GL_NV_path_rendering"))) {
444 if (NULL == fFunctions.fMatrixLoadf ||
445 NULL == fFunctions.fMatrixLoadIdentity) {
446 RETURN_FALSE_INTERFACE
450 if ((kGL_GrGLStandard == fStandard &&
451 (glVer >= GR_GL_VER(4,3) || fExtensions.has("GL_ARB_program_interface_query"))) ||
452 (kGLES_GrGLStandard == fStandard && glVer >= GR_GL_VER(3,1))) {
453 if (NULL == fFunctions.fGetProgramResourceLocation) {
454 RETURN_FALSE_INTERFACE
458 if (fExtensions.has("GL_NV_path_rendering")) {
459 if (NULL == fFunctions.fPathCommands ||
460 NULL == fFunctions.fPathCoords ||
461 NULL == fFunctions.fPathParameteri ||
462 NULL == fFunctions.fPathParameterf ||
463 NULL == fFunctions.fGenPaths ||
464 NULL == fFunctions.fDeletePaths ||
465 NULL == fFunctions.fIsPath ||
466 NULL == fFunctions.fPathStencilFunc ||
467 NULL == fFunctions.fStencilFillPath ||
468 NULL == fFunctions.fStencilStrokePath ||
469 NULL == fFunctions.fStencilFillPathInstanced ||
470 NULL == fFunctions.fStencilStrokePathInstanced ||
471 NULL == fFunctions.fCoverFillPath ||
472 NULL == fFunctions.fCoverStrokePath ||
473 NULL == fFunctions.fCoverFillPathInstanced ||
474 NULL == fFunctions.fCoverStrokePathInstanced) {
475 RETURN_FALSE_INTERFACE
477 if (kGL_GrGLStandard == fStandard) {
478 // Some methods only exist on desktop
479 if (NULL == fFunctions.fPathTexGen) {
480 RETURN_FALSE_INTERFACE
483 // All additions through v1.3 exist on GLES
484 if (NULL == fFunctions.fStencilThenCoverFillPath ||
485 NULL == fFunctions.fStencilThenCoverStrokePath ||
486 NULL == fFunctions.fStencilThenCoverFillPathInstanced ||
487 NULL == fFunctions.fStencilThenCoverStrokePathInstanced ||
488 NULL == fFunctions.fProgramPathFragmentInputGen) {
489 RETURN_FALSE_INTERFACE