Implement support for dual source blending in ES

src/gpu/gl/GrGLAssembleInterface.cpp

 
 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLAssembleInterface.h"
@@ skipping 479 matching lines @@
     GrGLInterface* interface = SkNEW(GrGLInterface);
     GrGLInterface::Functions* functions = &interface->fFunctions;
 
     GET_PROC(ActiveTexture);
     GET_PROC(AttachShader);
     GET_PROC(BindAttribLocation);
     GET_PROC(BindBuffer);
     GET_PROC(BindTexture);
     GET_PROC_SUFFIX(BindVertexArray, OES);
 
+    if (version >= GR_GL_VER(3,0) && extensions.has("GL_EXT_blend_func_extended")) {
+        GET_PROC_SUFFIX(BindFragDataLocation, EXT);
+        GET_PROC_SUFFIX(BindFragDataLocationIndexed, EXT);
+    }
+
     if (extensions.has("GL_KHR_blend_equation_advanced")) {
         GET_PROC_SUFFIX(BlendBarrier, KHR);
     } else if (extensions.has("GL_NV_blend_equation_advanced")) {
         GET_PROC_SUFFIX(BlendBarrier, NV);
     }
 
     GET_PROC(BlendColor);
     GET_PROC(BlendEquation);
     GET_PROC(BlendFunc);
     GET_PROC(BufferData);
@@ skipping 236 matching lines @@
         GET_PROC_SUFFIX(PushDebugGroup, KHR);
         GET_PROC_SUFFIX(PopDebugGroup, KHR);
         GET_PROC_SUFFIX(ObjectLabel, KHR);
     }
 
     interface->fStandard = kGLES_GrGLStandard;
     interface->fExtensions.swap(&extensions);
 
     return interface;
 }