Update how we send draws to gpu backend to reduce state setting.

src/gpu/GrGpu.cpp

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "GrGpu.h"
 
 #include "GrCaps.h"
 #include "GrContext.h"
 #include "GrGpuResourcePriv.h"
 #include "GrIndexBuffer.h"
 #include "GrPathRendering.h"
 #include "GrPipeline.h"
 #include "GrResourceCache.h"
 #include "GrResourceProvider.h"
 #include "GrRenderTargetPriv.h"
 #include "GrStencilAttachment.h"
 #include "GrSurfacePriv.h"
 #include "GrTransferBuffer.h"
 #include "GrVertexBuffer.h"
 #include "GrVertices.h"
 #include "SkTypes.h"
 
 GrVertices& GrVertices::operator =(const GrVertices& di) {
-    fPrimitiveType  = di.fPrimitiveType;
     fStartVertex    = di.fStartVertex;
     fStartIndex     = di.fStartIndex;
     fVertexCount    = di.fVertexCount;
     fIndexCount     = di.fIndexCount;
 
     fInstanceCount          = di.fInstanceCount;
     fVerticesPerInstance    = di.fVerticesPerInstance;
     fIndicesPerInstance     = di.fIndicesPerInstance;
     fMaxInstancesPerDraw    = di.fMaxInstancesPerDraw;
 
@@ skipping 446 matching lines @@
     fMultisampleSpecsMap[effectiveKey] = &specs;
     if (effectiveSampleCnt != desc.fSampleCnt) {
         SkASSERT(surfDescKey < effectiveKey);
         fMultisampleSpecsMap[surfDescKey] = &specs;
     }
     return specs;
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 
-void GrGpu::draw(const DrawArgs& args, const GrVertices& vertices) {
+void GrGpu::draw(const GrPipeline& pipeline,
+                 const GrPrimitiveProcessor& primProc,
+                 GrPrimitiveType primitiveType,
+                 const GrVertices* vertArray,
+                 int drawCount) {
     this->handleDirtyContext();
-    if (GrXferBarrierType barrierType = args.fPipeline->xferBarrierType(*this->caps())) {
-        this->xferBarrier(args.fPipeline->getRenderTarget(), barrierType);
-    }
 
-    GrVertices::Iterator iter;
-    const GrNonInstancedVertices* verts = iter.init(vertices);
-    do {
-        this->onDraw(args, *verts);
-        fStats.incNumDraws();
-    } while ((verts = iter.next()));
+    this->onDraw(pipeline, primProc, primitiveType, vertArray, drawCount);
 }