Add ES 3.0 fallback for instanced rendering

src/gpu/GrCaps.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrCaps.h"
 #include "GrContextOptions.h"
 
@@ skipping 81 matching lines @@
     fReuseScratchTextures = true;
     fReuseScratchBuffers = true;
     fGpuTracingSupport = false;
     fCompressedTexSubImageSupport = false;
     fOversizedStencilSupport = false;
     fTextureBarrierSupport = false;
     fSampleLocationsSupport = false;
     fMultisampleDisableSupport = false;
     fUsesMixedSamples = false;
     fPreferClientSideDynamicBuffers = false;
-    fSupportsInstancedDraws = false;
     fFullClearIsFree = false;
     fMustClearUploadedBufferData = false;
     fSampleShadingSupport = false;
 
     fUseDrawInsteadOfClear = false;
 
     fInstancedSupport = InstancedSupport::kNone;
 
     fBlendEquationSupport = kBasic_BlendEquationSupport;
     fAdvBlendEqBlacklist = 0;
@@ skipping 61 matching lines @@
     r.appendf("Reuse Scratch Textures             : %s\n", gNY[fReuseScratchTextures]);
     r.appendf("Reuse Scratch Buffers              : %s\n", gNY[fReuseScratchBuffers]);
     r.appendf("Gpu Tracing Support                : %s\n", gNY[fGpuTracingSupport]);
     r.appendf("Compressed Update Support          : %s\n", gNY[fCompressedTexSubImageSupport]);
     r.appendf("Oversized Stencil Support          : %s\n", gNY[fOversizedStencilSupport]);
     r.appendf("Texture Barrier Support            : %s\n", gNY[fTextureBarrierSupport]);
     r.appendf("Sample Locations Support           : %s\n", gNY[fSampleLocationsSupport]);
     r.appendf("Multisample disable support        : %s\n", gNY[fMultisampleDisableSupport]);
     r.appendf("Uses Mixed Samples                 : %s\n", gNY[fUsesMixedSamples]);
     r.appendf("Prefer client-side dynamic buffers : %s\n", gNY[fPreferClientSideDynamicBuffers]);
-    r.appendf("Supports instanced draws           : %s\n", gNY[fSupportsInstancedDraws]);
     r.appendf("Full screen clear is free          : %s\n", gNY[fFullClearIsFree]);
     r.appendf("Must clear buffer memory           : %s\n", gNY[fMustClearUploadedBufferData]);
     r.appendf("Draw Instead of Clear [workaround] : %s\n", gNY[fUseDrawInsteadOfClear]);
     r.appendf("Draw Instead of TexSubImage [workaround] : %s\n",
               gNY[fUseDrawInsteadOfPartialRenderTargetWrite]);
     r.appendf("Prefer VRAM Use over flushes [workaround] : %s\n", gNY[fPreferVRAMUseOverFlushes]);
 
     if (this->advancedBlendEquationSupport()) {
         r.appendf("Advanced Blend Equation Blacklist  : 0x%x\n", fAdvBlendEqBlacklist);
     }
@@ skipping 86 matching lines @@
 
     for (size_t i = 1; i < SK_ARRAY_COUNT(kConfigNames); ++i)  {
         GrPixelConfig config = static_cast<GrPixelConfig>(i);
         r.appendf("%s is uploadable to a texture: %s\n",
                   kConfigNames[i],
                   gNY[this->isConfigTexturable(config)]);
     }
 
     return r;
 }