Implement support for CHROMIUM_path_rendering pseudo extension

src/gpu/gl/GrGLInterface.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "gl/GrGLInterface.h"
 #include "gl/GrGLExtensions.h"
@@ skipping 41 matching lines @@
     newInterface->fFunctions.fStencilStrokePathInstanced = NULL;
     newInterface->fFunctions.fCoverFillPath = NULL;
     newInterface->fFunctions.fCoverStrokePath = NULL;
     newInterface->fFunctions.fCoverFillPathInstanced = NULL;
     newInterface->fFunctions.fCoverStrokePathInstanced = NULL;
     newInterface->fFunctions.fStencilThenCoverFillPath = NULL;
     newInterface->fFunctions.fStencilThenCoverStrokePath = NULL;
     newInterface->fFunctions.fStencilThenCoverFillPathInstanced = NULL;
     newInterface->fFunctions.fStencilThenCoverStrokePathInstanced = NULL;
     newInterface->fFunctions.fProgramPathFragmentInputGen = NULL;
+    newInterface->fFunctions.fBindFragmentInputLocation = NULL;
     return newInterface;
 }
 
 GrGLInterface::GrGLInterface() {
     fStandard = kNone_GrGLStandard;
 
 #if GR_GL_PER_GL_FUNC_CALLBACK
     fCallback = GrGLDefaultInterfaceCallback;
     fCallbackData = 0;
 #endif
@@ skipping 404 matching lines @@
 
     if (kGLES_GrGLStandard == fStandard || glVer >= GR_GL_VER(4,1) ||
         fExtensions.has("GL_ARB_ES2_compatibility")) {
 #if 0 // Enable this once Chrome gives us the function ptr
         if (NULL == fFunctions.fGetShaderPrecisionFormat) {
             RETURN_FALSE_INTERFACE
         }
 #endif
     }
 
-    if (fExtensions.has("GL_NV_path_rendering")) {
+    if (fExtensions.has("GL_NV_path_rendering") || fExtensions.has("GL_CHROMIUM_path_rendering")) {
         if (NULL == fFunctions.fMatrixLoadf ||
             NULL == fFunctions.fMatrixLoadIdentity ||
             NULL == fFunctions.fPathCommands ||
             NULL == fFunctions.fPathParameteri ||
             NULL == fFunctions.fPathParameterf ||
             NULL == fFunctions.fGenPaths ||
             NULL == fFunctions.fDeletePaths ||
             NULL == fFunctions.fIsPath ||
             NULL == fFunctions.fPathStencilFunc ||
             NULL == fFunctions.fStencilFillPath ||
@@ skipping 11 matching lines @@
             // Update this list -> update GrGLCaps::hasPathRenderingSupport too.
             || NULL == fFunctions.fStencilThenCoverFillPath ||
             NULL == fFunctions.fStencilThenCoverStrokePath ||
             NULL == fFunctions.fStencilThenCoverFillPathInstanced ||
             NULL == fFunctions.fStencilThenCoverStrokePathInstanced ||
             NULL == fFunctions.fProgramPathFragmentInputGen
 #endif
             ) {
             RETURN_FALSE_INTERFACE
         }
+        if (fExtensions.has("GL_CHROMIUM_path_rendering")) {
+            if (NULL == fFunctions.fBindFragmentInputLocation) {
+                RETURN_FALSE_INTERFACE
+            }
+        }
     }
 
     if (fExtensions.has("GL_EXT_raster_multisample")) {
         if (NULL == fFunctions.fRasterSamples) {
             RETURN_FALSE_INTERFACE
         }
     }
 
     if (fExtensions.has("GL_NV_framebuffer_mixed_samples")) {
         if (NULL == fFunctions.fCoverageModulation) {
@@ skipping 166 matching lines @@
             NULL == fFunctions.fGetDebugMessageLog ||
             NULL == fFunctions.fPushDebugGroup ||
             NULL == fFunctions.fPopDebugGroup ||
             NULL == fFunctions.fObjectLabel) {
             RETURN_FALSE_INTERFACE
         }
     }
 
     return true;
 }