Add tokens and entry points for KHR_blend_equation_advanced

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 52 matching lines @@
 
     GET_PROC(ActiveTexture);
     GET_PROC(AttachShader);
     GET_PROC(BindAttribLocation);
     GET_PROC(BindBuffer);
     if (glVer >= GR_GL_VER(3,0)) {
         GET_PROC(BindFragDataLocation);
     }
     GET_PROC(BeginQuery);
     GET_PROC(BindTexture);
-    GET_PROC(BlendFunc);
+
+    if (extensions.has("GL_KHR_blend_equation_advanced")) {
+        GET_PROC_SUFFIX(BlendBarrier, KHR);
+    }
 
     if (glVer >= GR_GL_VER(1,4) ||
         extensions.has("GL_ARB_imaging") ||
         extensions.has("GL_EXT_blend_color")) {
         GET_PROC(BlendColor);
     }
 
+    if (glVer >= GR_GL_VER(1,4) ||
+        extensions.has("GL_ARB_imaging") ||
+        extensions.has("GL_EXT_blend_subtract")) {
+        GET_PROC(BlendEquation);

[Mark Kilgard, 2015/04/02 22:41:43]

technically, EXT_blend_subtract (which requires EXT_blend_minmax) would get a
glBlendEquationEXT routine

I think it is safe to just assume 1.4 or ARB_imaging

anything supporting *just* EXT_blend_equation_subtract would be ancient

[Chris Dalton, 2015/04/17 07:53:42]

Agreed. However, I did it this way to mimic how glBlendColor is loaded above.
That one also had the bug of not loading glBlendColorEXT with the EXT...

I fixed them both in patch 2 to load the EXT, but if the general consensus is to
just ignore the EXT versions completely I don't mind going that route either.

+    }
+
+    GET_PROC(BlendFunc);
     GET_PROC(BufferData);
     GET_PROC(BufferSubData);
     GET_PROC(Clear);
     GET_PROC(ClearColor);
     GET_PROC(ClearStencil);
     GET_PROC(ColorMask);
     GET_PROC(CompileShader);
     GET_PROC(CompressedTexImage2D);
     GET_PROC(CompressedTexSubImage2D);
     GET_PROC(CopyTexSubImage2D);
@@ skipping 234 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 (extensions.has("GL_KHR_blend_equation_advanced")) {
+        GET_PROC_SUFFIX(BlendBarrier, KHR);
+    }
+
     GET_PROC(BlendColor);
+    GET_PROC(BlendEquation);
     GET_PROC(BlendFunc);
     GET_PROC(BufferData);
     GET_PROC(BufferSubData);
     GET_PROC(Clear);
     GET_PROC(ClearColor);
     GET_PROC(ClearStencil);
     GET_PROC(ColorMask);
     GET_PROC(CompileShader);
     GET_PROC(CompressedTexImage2D);
     GET_PROC(CompressedTexSubImage2D);
@@ skipping 171 matching lines @@
         GET_PROC_SUFFIX(StencilThenCoverStrokePathInstanced, NV);
         GET_PROC_SUFFIX(ProgramPathFragmentInputGen, NV);
         GET_PROC_SUFFIX(PathMemoryGlyphIndexArray, NV);
     }
 
     interface->fStandard = kGLES_GrGLStandard;
     interface->fExtensions.swap(&extensions);
 
     return interface;
 }