Add support for glDrawRangeElements

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 507 matching lines @@
     }
 
     if (kGL_GrGLStandard == standard) {
         fDrawIndirectSupport = version >= GR_GL_VER(4,0) ||
                                ctxInfo.hasExtension("GL_ARB_draw_indirect");
         fBaseInstanceSupport = version >= GR_GL_VER(4,2);
         fMultiDrawIndirectSupport = version >= GR_GL_VER(4,3) ||
                                     (fDrawIndirectSupport &&
                                      !fBaseInstanceSupport && // The ARB extension has no base inst.
                                      ctxInfo.hasExtension("GL_ARB_multi_draw_indirect"));
+        fDrawRangeElementsSupport = version >= GR_GL_VER(2,0);
     } else {
         fDrawIndirectSupport = version >= GR_GL_VER(3,1);
         fMultiDrawIndirectSupport = fDrawIndirectSupport &&
                                     ctxInfo.hasExtension("GL_EXT_multi_draw_indirect");
         fBaseInstanceSupport = fDrawIndirectSupport &&
                                ctxInfo.hasExtension("GL_EXT_base_instance");
+        fDrawRangeElementsSupport = version >= GR_GL_VER(3,0);
     }
 
     this->initShaderPrecisionTable(ctxInfo, gli, glslCaps);
 
     if (contextOptions.fUseShaderSwizzling) {
         fTextureSwizzleSupport = false;
     }
 
     if (kGL_GrGLStandard == standard) {
         if ((version >= GR_GL_VER(4, 0) || ctxInfo.hasExtension("GL_ARB_sample_shading")) && 
@@ skipping 1408 matching lines @@
 void GrGLCaps::onApplyOptionsOverrides(const GrContextOptions& options) {
     if (options.fEnableInstancedRendering) {
         fInstancedSupport = gr_instanced::GLInstancedRendering::CheckSupport(*this);
 #ifndef SK_BUILD_FOR_MAC
         // OS X doesn't seem to write correctly to floating point textures when using
         // glDraw*Indirect, regardless of the underlying GPU.
         fAvoidInstancedDrawsToFPTargets = true;
 #endif
     }
 }