fix for calling bindFragDataLocation on OpenGL 2.1

src/gpu/gl/GrGLCaps.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGLCaps.h"
 
@@ skipping 29 matching lines @@
     fFragCoordsConventionSupport = false;
     fVertexArrayObjectSupport = false;
     fInstancedDrawingSupport = false;
     fDirectStateAccessSupport = false;
     fDebugSupport = false;
     fES2CompatibilitySupport = false;
     fMultisampleDisableSupport = false;
     fUseNonVBOVertexAndIndexDynamicData = false;
     fIsCoreProfile = false;
     fFullClearIsFree = false;
+    fBindFragDataLocationSupport = false;
 
     fReadPixelsSupportedCache.reset();
 
     fShaderCaps.reset(SkNEW_ARGS(GrGLSLCaps, (contextOptions,
         ctxInfo, glInterface, *this)));
 
     this->init(contextOptions, ctxInfo, glInterface);
 }
 
 void GrGLCaps::init(const GrContextOptions& contextOptions,
@@ skipping 203 matching lines @@
     else {
         fES2CompatibilitySupport = true;
     }
 
     if (kGL_GrGLStandard == standard) {
         fMultisampleDisableSupport = true;
     } else {
         fMultisampleDisableSupport = false;
     }
 
+    if (kGL_GrGLStandard == standard && version >= GR_GL_VER(3, 0)) {
+        fBindFragDataLocationSupport = true;
+    }
+
     /**************************************************************************
     * GrShaderCaps fields
     **************************************************************************/
 
     glslCaps->fPathRenderingSupport = ctxInfo.hasExtension("GL_NV_path_rendering");
 
     if (glslCaps->fPathRenderingSupport) {
         if (kGL_GrGLStandard == standard) {
             // We only support v1.3+ of GL_NV_path_rendering which allows us to
             // set individual fragment inputs with ProgramPathFragmentInputGen. The API
@@ skipping 902 matching lines @@
     if (fGeometryShaderSupport) {
         for (int p = 0; p < kGrSLPrecisionCount; ++p) {
             fFloatPrecisions[kGeometry_GrShaderType][p] = fFloatPrecisions[kVertex_GrShaderType][p];
         }
     }
 }