Iterate over instanced draws in GrGpu rather than above GrBatchTarget

Review URL: https://codereview.chromium.org/1127273007

16 files changed, 136 insertions, 136 deletions

diff --git a/src/gpu/GrAAConvexPathRenderer.cpp b/src/gpu/GrAAConvexPathRenderer.cpp
index 046ef80dc9..a9a3c29612 100644
--- a/src/gpu/GrAAConvexPathRenderer.cpp
+++ b/src/gpu/GrAAConvexPathRenderer.cpp
@@ -794,9 +794,10 @@ public:
             int firstVertex;
 
             size_t vertexStride = quadProcessor->getVertexStride();
-            void *vertices = batchTarget->makeVertSpace(vertexStride, vertexCount,
-                                                        &vertexBuffer, &firstVertex);
-            if (!vertices) {
+            QuadVertex* verts = reinterpret_cast<QuadVertex*>(batchTarget->makeVertSpace(
+                vertexStride, vertexCount, &vertexBuffer, &firstVertex));
+
+            if (!verts) {
                 SkDebugf("Could not allocate vertices\n");
                 return;
             }
@@ -810,18 +811,16 @@ public:
                 return;
             }
 
-            QuadVertex* verts = reinterpret_cast<QuadVertex*>(vertices);
-
             SkSTArray<kPreallocDrawCnt, Draw, true> draws;
             create_vertices(segments, fanPt, &draws, verts, idxs);
 
-            GrVertices info;
+            GrVertices vertices;
 
             for (int i = 0; i < draws.count(); ++i) {
                 const Draw& draw = draws[i];
-                info.initIndexed(kTriangles_GrPrimitiveType, vertexBuffer, indexBuffer, firstVertex,
-                                 firstIndex, draw.fVertexCnt, draw.fIndexCnt);
-                batchTarget->draw(info);
+                vertices.initIndexed(kTriangles_GrPrimitiveType, vertexBuffer, indexBuffer,
+                                     firstVertex, firstIndex, draw.fVertexCnt, draw.fIndexCnt);
+                batchTarget->draw(vertices);
                 firstVertex += draw.fVertexCnt;
                 firstIndex += draw.fIndexCnt;
             }
diff --git a/src/gpu/GrAADistanceFieldPathRenderer.cpp b/src/gpu/GrAADistanceFieldPathRenderer.cpp
index fc4ab1647b..3d4a89b0c0 100755
--- a/src/gpu/GrAADistanceFieldPathRenderer.cpp
+++ b/src/gpu/GrAADistanceFieldPathRenderer.cpp
@@ -507,14 +507,11 @@ private:
 
     void flush(GrBatchTarget* batchTarget, FlushInfo* flushInfo) {
         GrVertices vertices;
-        int instancesToFlush = flushInfo->fInstancesToFlush;
         int maxInstancesPerDraw = flushInfo->fIndexBuffer->maxQuads();
         vertices.initInstanced(kTriangles_GrPrimitiveType, flushInfo->fVertexBuffer,
             flushInfo->fIndexBuffer, flushInfo->fVertexOffset, kVerticesPerQuad,
-            kIndicesPerQuad, &instancesToFlush, maxInstancesPerDraw);
-        do {
-            batchTarget->draw(vertices);
-        } while (vertices.nextInstances(&instancesToFlush, maxInstancesPerDraw));
+            kIndicesPerQuad, flushInfo->fInstancesToFlush, maxInstancesPerDraw);
+        batchTarget->draw(vertices);
         flushInfo->fVertexOffset += kVerticesPerQuad * flushInfo->fInstancesToFlush;
         flushInfo->fInstancesToFlush = 0;
     }
diff --git a/src/gpu/GrAAHairLinePathRenderer.cpp b/src/gpu/GrAAHairLinePathRenderer.cpp
index 6101c9ba5b..c5d8ae1126 100644
--- a/src/gpu/GrAAHairLinePathRenderer.cpp
+++ b/src/gpu/GrAAHairLinePathRenderer.cpp
@@ -869,30 +869,26 @@ void AAHairlineBatch::generateGeometry(GrBatchTarget* batchTarget, const GrPipel
 
         size_t vertexStride = lineGP->getVertexStride();
         int vertexCount = kLineSegNumVertices * lineCount;
-        void *vertices = batchTarget->makeVertSpace(vertexStride, vertexCount,
-                                                    &vertexBuffer, &firstVertex);
+        LineVertex* verts = reinterpret_cast<LineVertex*>(
+            batchTarget->makeVertSpace(vertexStride, vertexCount, &vertexBuffer, &firstVertex));
 
-        if (!vertices || !linesIndexBuffer) {
+        if (!verts|| !linesIndexBuffer) {
             SkDebugf("Could not allocate vertices\n");
             return;
         }
 
         SkASSERT(lineGP->getVertexStride() == sizeof(LineVertex));
 
-        LineVertex* verts = reinterpret_cast<LineVertex*>(vertices);
         for (int i = 0; i < lineCount; ++i) {
             add_line(&lines[2*i], toSrc, this->coverage(), &verts);
         }
 
         {
-            int linesLeft = lineCount;
-            GrVertices info;
-            info.initInstanced(kTriangles_GrPrimitiveType, vertexBuffer, linesIndexBuffer,
-                               firstVertex, kLineSegNumVertices, kIdxsPerLineSeg, &linesLeft,
-                               kLineSegsNumInIdxBuffer);
-            do {
-                batchTarget->draw(info);
-            } while (info.nextInstances(&linesLeft, kLineSegsNumInIdxBuffer));
+            GrVertices vertices;
+            vertices.initInstanced(kTriangles_GrPrimitiveType, vertexBuffer, linesIndexBuffer,
+                                   firstVertex, kLineSegNumVertices, kIdxsPerLineSeg, lineCount,
+                                   kLineSegsNumInIdxBuffer);
+            batchTarget->draw(vertices);
         }
     }
 
@@ -939,15 +935,12 @@ void AAHairlineBatch::generateGeometry(GrBatchTarget* batchTarget, const GrPipel
             quadGP->initBatchTracker(batchTarget->currentBatchTracker(), init);
 
             {
-                int quadsLeft = quadCount;
-                GrVertices info;
-                info.initInstanced(kTriangles_GrPrimitiveType, vertexBuffer, quadsIndexBuffer,
-                                   firstVertex, kQuadNumVertices, kIdxsPerQuad, &quadsLeft,
-                                   kQuadsNumInIdxBuffer);
-               do {
-                   batchTarget->draw(info);
-               } while (info.nextInstances(&quadsLeft, kQuadsNumInIdxBuffer));
-               firstVertex += quadCount * kQuadNumVertices;
+                GrVertices verts;
+                verts.initInstanced(kTriangles_GrPrimitiveType, vertexBuffer, quadsIndexBuffer,
+                                    firstVertex, kQuadNumVertices, kIdxsPerQuad, quadCount,
+                                    kQuadsNumInIdxBuffer);
+                batchTarget->draw(verts);
+                firstVertex += quadCount * kQuadNumVertices;
            }
         }
 
@@ -963,14 +956,11 @@ void AAHairlineBatch::generateGeometry(GrBatchTarget* batchTarget, const GrPipel
             conicGP->initBatchTracker(batchTarget->currentBatchTracker(), init);
 
             {
-                int conicsLeft = conicCount;
-                GrVertices info;
-                info.initInstanced(kTriangles_GrPrimitiveType, vertexBuffer, quadsIndexBuffer,
-                                  firstVertex, kQuadNumVertices, kIdxsPerQuad, &conicsLeft,
-                                  kQuadsNumInIdxBuffer);
-                do {
-                    batchTarget->draw(info);
-                } while (info.nextInstances(&conicsLeft, kQuadsNumInIdxBuffer));
+                GrVertices verts;
+                verts.initInstanced(kTriangles_GrPrimitiveType, vertexBuffer, quadsIndexBuffer,
+                                    firstVertex, kQuadNumVertices, kIdxsPerQuad, conicCount,
+                                    kQuadsNumInIdxBuffer);
+                batchTarget->draw(verts);
             }
         }
     }
diff --git a/src/gpu/GrAARectRenderer.cpp b/src/gpu/GrAARectRenderer.cpp
index 7940e96b84..d208597fbb 100644
--- a/src/gpu/GrAARectRenderer.cpp
+++ b/src/gpu/GrAARectRenderer.cpp
@@ -140,7 +140,7 @@ public:
                                              canTweakAlphaForCoverage);
         }
 
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
@@ -505,7 +505,7 @@ public:
                                                args.fMiterStroke,
                                                canTweakAlphaForCoverage);
         }
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
diff --git a/src/gpu/GrAtlasTextContext.cpp b/src/gpu/GrAtlasTextContext.cpp
index 9b90f8ac41..bfe938131b 100644
--- a/src/gpu/GrAtlasTextContext.cpp
+++ b/src/gpu/GrAtlasTextContext.cpp
@@ -1838,15 +1838,12 @@ private:
 
     void flush(GrBatchTarget* batchTarget, FlushInfo* flushInfo) {
         GrVertices vertices;
-        int glyphsToFlush = flushInfo->fGlyphsToFlush;
         int maxGlyphsPerDraw = flushInfo->fIndexBuffer->maxQuads();
         vertices.initInstanced(kTriangles_GrPrimitiveType, flushInfo->fVertexBuffer,
                                flushInfo->fIndexBuffer, flushInfo->fVertexOffset,
-                               kVerticesPerGlyph, kIndicesPerGlyph, &glyphsToFlush,
+                               kVerticesPerGlyph, kIndicesPerGlyph, flushInfo->fGlyphsToFlush,
                                maxGlyphsPerDraw);
-        do {
-            batchTarget->draw(vertices);
-        } while (vertices.nextInstances(&glyphsToFlush, maxGlyphsPerDraw));
+        batchTarget->draw(vertices);
         flushInfo->fVertexOffset += kVerticesPerGlyph * flushInfo->fGlyphsToFlush;
         flushInfo->fGlyphsToFlush = 0;
     }
diff --git a/src/gpu/GrBatch.cpp b/src/gpu/GrBatch.cpp
index 0655a4cd9d..e69819e2d3 100644
--- a/src/gpu/GrBatch.cpp
+++ b/src/gpu/GrBatch.cpp
@@ -50,7 +50,6 @@ void* GrBatch::InstancedHelper::init(GrBatchTarget* batchTarget, GrPrimitiveType
                                      size_t vertexStride, const GrIndexBuffer* indexBuffer,
                                      int verticesPerInstance, int indicesPerInstance,
                                      int instancesToDraw) {
-    SkASSERT(!fInstancesRemaining);
     SkASSERT(batchTarget);
     if (!indexBuffer) {
         return NULL;
@@ -65,14 +64,12 @@ void* GrBatch::InstancedHelper::init(GrBatchTarget* batchTarget, GrPrimitiveType
         return NULL;
     }
     SkASSERT(vertexBuffer);
-    fInstancesRemaining = instancesToDraw;
     size_t ibSize = indexBuffer->gpuMemorySize();
-    fMaxInstancesPerDraw = static_cast<int>(ibSize / (sizeof(uint16_t) * indicesPerInstance));
+    int maxInstancesPerDraw = static_cast<int>(ibSize / (sizeof(uint16_t) * indicesPerInstance));
 
     fVertices.initInstanced(primType, vertexBuffer, indexBuffer,
-        firstVertex, verticesPerInstance, indicesPerInstance, &fInstancesRemaining,
-        fMaxInstancesPerDraw);
-    SkASSERT(fMaxInstancesPerDraw > 0);
+        firstVertex, verticesPerInstance, indicesPerInstance, instancesToDraw,
+        maxInstancesPerDraw);
     return vertices;
 }
 
diff --git a/src/gpu/GrBatch.h b/src/gpu/GrBatch.h
index 1da964b7fc..9c1647d2df 100644
--- a/src/gpu/GrBatch.h
+++ b/src/gpu/GrBatch.h
@@ -114,7 +114,7 @@ protected:
         space for the vertices and flushes the draws to the batch target.*/
    class InstancedHelper {
    public:
-        InstancedHelper() : fInstancesRemaining(0) {}
+        InstancedHelper() {}
         /** Returns the allocated storage for the vertices. The caller should populate the before
             vertices before calling issueDraws(). */
         void* init(GrBatchTarget* batchTarget, GrPrimitiveType, size_t vertexStride,
@@ -122,15 +122,11 @@ protected:
                    int instancesToDraw);
 
         /** Call after init() to issue draws to the batch target.*/
-        void issueDraws(GrBatchTarget* batchTarget) {
+        void issueDraw(GrBatchTarget* batchTarget) {
             SkASSERT(fVertices.instanceCount());
-            do {
-                batchTarget->draw(fVertices);
-            } while (fVertices.nextInstances(&fInstancesRemaining, fMaxInstancesPerDraw));
+            batchTarget->draw(fVertices);
         }
     private:
-        int         fInstancesRemaining;
-        int         fMaxInstancesPerDraw;
         GrVertices  fVertices;
     };
 
@@ -146,7 +142,7 @@ protected:
             calling issueDraws(). */
         void* init(GrBatchTarget* batchTarget, size_t vertexStride, int quadsToDraw);
 
-        using InstancedHelper::issueDraws;
+        using InstancedHelper::issueDraw;
 
     private:
         typedef InstancedHelper INHERITED;
diff --git a/src/gpu/GrGpu.cpp b/src/gpu/GrGpu.cpp
index 8222504b0e..15e4b28c3a 100644
--- a/src/gpu/GrGpu.cpp
+++ b/src/gpu/GrGpu.cpp
@@ -29,6 +29,7 @@ GrVertices& GrVertices::operator =(const GrVertices& di) {
     fInstanceCount          = di.fInstanceCount;
     fVerticesPerInstance    = di.fVerticesPerInstance;
     fIndicesPerInstance     = di.fIndicesPerInstance;
+    fMaxInstancesPerDraw    = di.fMaxInstancesPerDraw;
 
     fVertexBuffer.reset(di.vertexBuffer());
     fIndexBuffer.reset(di.indexBuffer());
@@ -288,7 +289,11 @@ void GrGpu::removeGpuTraceMarker(const GrGpuTraceMarker* marker) {
 
 void GrGpu::draw(const DrawArgs& args, const GrVertices& vertices) {
     this->handleDirtyContext();
-    this->onDraw(args, vertices);
+    GrVertices::Iterator iter;
+    const GrNonInstancedVertices* verts = iter.init(vertices);
+    do {
+        this->onDraw(args, *verts);
+    } while ((verts = iter.next()));
 }
 
 void GrGpu::stencilPath(const GrPath* path, const StencilPathState& state) {
diff --git a/src/gpu/GrGpu.h b/src/gpu/GrGpu.h
index b580f483ae..83f6c992fc 100644
--- a/src/gpu/GrGpu.h
+++ b/src/gpu/GrGpu.h
@@ -14,6 +14,7 @@
 #include "SkPath.h"
 
 class GrContext;
+class GrNonInstancedVertices;
 class GrPath;
 class GrPathRange;
 class GrPathRenderer;
@@ -433,7 +434,7 @@ private:
     virtual void onClearStencilClip(GrRenderTarget*, const SkIRect& rect, bool insideClip) = 0;
 
     // overridden by backend-specific derived class to perform the draw call.
-    virtual void onDraw(const DrawArgs&, const GrVertices&) = 0;
+    virtual void onDraw(const DrawArgs&, const GrNonInstancedVertices&) = 0;
     virtual void onStencilPath(const GrPath*, const StencilPathState&) = 0;
 
     virtual void onDrawPath(const DrawArgs&, const GrPath*, const GrStencilSettings&) = 0;
diff --git a/src/gpu/GrOvalRenderer.cpp b/src/gpu/GrOvalRenderer.cpp
index 966a9498a9..886159cdac 100644
--- a/src/gpu/GrOvalRenderer.cpp
+++ b/src/gpu/GrOvalRenderer.cpp
@@ -784,7 +784,7 @@ public:
 
             verts += kVerticesPerQuad;
         }
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
@@ -1013,7 +1013,7 @@ public:
 
             verts += kVerticesPerQuad;
         }
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
@@ -1277,7 +1277,7 @@ public:
 
             verts += kVerticesPerQuad;
         }
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
@@ -1661,7 +1661,7 @@ public:
             }
         }
 
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
@@ -1853,7 +1853,7 @@ public:
                 verts++;
             }
         }
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
diff --git a/src/gpu/GrRectBatch.cpp b/src/gpu/GrRectBatch.cpp
index ba63db1e0f..ab9ce4febc 100644
--- a/src/gpu/GrRectBatch.cpp
+++ b/src/gpu/GrRectBatch.cpp
@@ -156,7 +156,7 @@ public:
             }
         }
 
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
diff --git a/src/gpu/GrTest.cpp b/src/gpu/GrTest.cpp
index 727fbbc662..1017273031 100644
--- a/src/gpu/GrTest.cpp
+++ b/src/gpu/GrTest.cpp
@@ -199,7 +199,7 @@ private:
 
     void onClearStencilClip(GrRenderTarget*, const SkIRect& rect, bool insideClip) override {}
 
-    void onDraw(const DrawArgs&, const GrVertices&) override {}
+    void onDraw(const DrawArgs&, const GrNonInstancedVertices&) override {}
 
     void onStencilPath(const GrPath* path, const StencilPathState& state) override {}
 
diff --git a/src/gpu/GrVertices.h b/src/gpu/GrVertices.h
index f03482662e..10b2679da4 100644
--- a/src/gpu/GrVertices.h
+++ b/src/gpu/GrVertices.h
@@ -11,13 +11,36 @@
 #include "GrIndexBuffer.h"
 #include "GrVertexBuffer.h"
 
+class GrNonInstancedVertices {
+public:
+    GrPrimitiveType primitiveType() const { return fPrimitiveType; }
+    int startVertex() const { return fStartVertex; }
+    int startIndex() const { return fStartIndex; }
+    int vertexCount() const { return fVertexCount; }
+    int indexCount() const { return fIndexCount; }
+    bool isIndexed() const { return fIndexCount > 0; }
+
+    const GrVertexBuffer* vertexBuffer() const { return fVertexBuffer.get(); }
+    const GrIndexBuffer* indexBuffer() const { return fIndexBuffer.get(); }
+
+protected:
+    GrPrimitiveType         fPrimitiveType;
+    int                     fStartVertex;
+    int                     fStartIndex;
+    int                     fVertexCount;
+    int                     fIndexCount;
+    GrPendingIOResource<const GrVertexBuffer, kRead_GrIOType> fVertexBuffer;
+    GrPendingIOResource<const GrIndexBuffer, kRead_GrIOType>  fIndexBuffer;
+    friend class GrVertices;
+};
+
 /**
  * Used to communicate index and vertex buffers, counts, and offsets for a draw from GrBatch to
  * GrGpu. It also holds the primitive type for the draw. TODO: Consider moving ownership of this
  * and draw-issuing responsibility to GrPrimitiveProcessor. The rest of the vertex info lives there
  * already (stride, attribute mappings).
  */
-class GrVertices {
+class GrVertices : public GrNonInstancedVertices {
 public:
     GrVertices() {}
     GrVertices(const GrVertices& di) { (*this) = di; }
@@ -38,6 +61,7 @@ public:
         fInstanceCount = 0;
         fVerticesPerInstance = 0;
         fIndicesPerInstance = 0;
+        fMaxInstancesPerDraw = 0;
     }
 
     void initIndexed(GrPrimitiveType primType,
@@ -63,15 +87,21 @@ public:
         fInstanceCount = 0;
         fVerticesPerInstance = 0;
         fIndicesPerInstance = 0;
+        fMaxInstancesPerDraw = 0;
     }
 
+
+    /** Variation of the above that may be used when the total number of instances may exceed
+        the number of instances supported by the index buffer. To be used with
+        nextInstances() to draw in max-sized batches.*/
     void initInstanced(GrPrimitiveType primType,
                         const GrVertexBuffer* vertexBuffer,
                         const GrIndexBuffer* indexBuffer,
                         int startVertex,
                         int verticesPerInstance,
                         int indicesPerInstance,
-                        int instanceCount) {
+                        int instanceCount,
+                        int maxInstancesPerDraw) {
         SkASSERT(vertexBuffer);
         SkASSERT(indexBuffer);
         SkASSERT(instanceCount);
@@ -88,74 +118,62 @@ public:
         fInstanceCount = instanceCount;
         fVertexCount = instanceCount * fVerticesPerInstance;
         fIndexCount = instanceCount * fIndicesPerInstance;
+        fMaxInstancesPerDraw = maxInstancesPerDraw;
     }
 
-    /** Variation of the above that may be used when the total number of instances may exceed
-        the number of instances supported by the index buffer. To be used with
-        nextInstances() to draw in max-sized batches.*/
-    void initInstanced(GrPrimitiveType primType,
-                        const GrVertexBuffer* vertexBuffer,
-                        const GrIndexBuffer* indexBuffer,
-                        int startVertex,
-                        int verticesPerInstance,
-                        int indicesPerInstance,
-                        int* instancesRemaining,
-                        int maxInstancesPerDraw) {
-        int instanceCount = SkTMin(*instancesRemaining, maxInstancesPerDraw);
-        *instancesRemaining -= instanceCount;
-        this->initInstanced(primType, vertexBuffer, indexBuffer, startVertex,
-                            verticesPerInstance, indicesPerInstance, instanceCount);
-    }
-
-    GrPrimitiveType primitiveType() const { return fPrimitiveType; }
-    int startVertex() const { return fStartVertex; }
-    int startIndex() const { return fStartIndex; }
-    int vertexCount() const { return fVertexCount; }
-    int indexCount() const { return fIndexCount; }
 
     /** These return 0 if initInstanced was not used to initialize the GrVertices. */
     int verticesPerInstance() const { return fVerticesPerInstance; }
     int indicesPerInstance() const { return fIndicesPerInstance; }
     int instanceCount() const { return fInstanceCount; }
 
-    bool isIndexed() const { return fIndexCount > 0; }
     bool isInstanced() const { return fInstanceCount > 0; }
 
-    /** Called after using this draw info to draw the next set of instances.
-        The vertex offset is advanced while the index buffer is reused at the same
-        position. instancesRemaining is number of instances that remain, maxInstances is
-        the most number of instances that can be used with the index buffer. If there
-        are no instances remaining, the GrVertices is unmodified and false is returned.*/
-    bool nextInstances(int* instancesRemaining, int maxInstances) {
-        SkASSERT(this->isInstanced());
-        if (!*instancesRemaining) {
-            return false;
+    class Iterator {
+    public:
+        const GrNonInstancedVertices* init(const GrVertices& vertices) {
+            fVertices = &vertices;
+            if (vertices.fInstanceCount <= vertices.fMaxInstancesPerDraw) {
+                fInstancesRemaining = 0;
+                // Note, this also covers the non-instanced case!
+                return &vertices;
+            }
+            SkASSERT(vertices.isInstanced());
+            fInstanceBatch.fIndexBuffer.reset(vertices.fIndexBuffer.get());
+            fInstanceBatch.fVertexBuffer.reset(vertices.fVertexBuffer.get());
+            fInstanceBatch.fIndexCount = vertices.fMaxInstancesPerDraw *
+                                         vertices.fIndicesPerInstance;
+            fInstanceBatch.fVertexCount = vertices.fMaxInstancesPerDraw *
+                                          vertices.fVerticesPerInstance;
+            fInstanceBatch.fPrimitiveType = vertices.fPrimitiveType;
+            fInstanceBatch.fStartIndex = vertices.fStartIndex;
+            fInstanceBatch.fStartVertex = vertices.fStartVertex;
+            fInstancesRemaining = vertices.fInstanceCount - vertices.fMaxInstancesPerDraw;
+            return &fInstanceBatch;
         }
-        fStartVertex += fVertexCount;
-        fInstanceCount = SkTMin(*instancesRemaining, maxInstances);
-        fVertexCount = fInstanceCount * fVerticesPerInstance;
-        fIndexCount = fInstanceCount * fIndicesPerInstance;
-        *instancesRemaining -= fInstanceCount;
-        return true;
-    }
 
-    const GrVertexBuffer* vertexBuffer() const { return fVertexBuffer.get(); }
-    const GrIndexBuffer* indexBuffer() const { return fIndexBuffer.get(); }
+        const GrNonInstancedVertices* next() {
+            if (!fInstancesRemaining) {
+                return NULL;
+            }
+            fInstanceBatch.fStartVertex += fInstanceBatch.fVertexCount;
+            int instances = SkTMin(fInstancesRemaining, fVertices->fMaxInstancesPerDraw);
+            fInstanceBatch.fIndexCount = instances * fVertices->fIndicesPerInstance;
+            fInstanceBatch.fVertexCount = instances * fVertices->fVerticesPerInstance;
+            fInstancesRemaining -= instances;
+            return &fInstanceBatch;
+        }
+    private:
+        GrNonInstancedVertices fInstanceBatch;
+        const GrVertices* fVertices;
+        int fInstancesRemaining;
+    };
 
 private:
-    GrPrimitiveType         fPrimitiveType;
-
-    int                     fStartVertex;
-    int                     fStartIndex;
-    int                     fVertexCount;
-    int                     fIndexCount;
-
     int                     fInstanceCount;
     int                     fVerticesPerInstance;
     int                     fIndicesPerInstance;
-
-    GrPendingIOResource<const GrVertexBuffer, kRead_GrIOType> fVertexBuffer;
-    GrPendingIOResource<const GrIndexBuffer, kRead_GrIOType>  fIndexBuffer;
+    int                     fMaxInstancesPerDraw;
 };
 
 #endif
diff --git a/src/gpu/effects/GrDashingEffect.cpp b/src/gpu/effects/GrDashingEffect.cpp
index e5fb218d7b..bd2997cdf3 100644
--- a/src/gpu/effects/GrDashingEffect.cpp
+++ b/src/gpu/effects/GrDashingEffect.cpp
@@ -599,7 +599,7 @@ public:
             rectIndex++;
         }
         SkASSERT(0 == (curVIdx % 4) && (curVIdx / 4) == totalRectCount);
-        helper.issueDraws(batchTarget);
+        helper.issueDraw(batchTarget);
     }
 
     SkSTArray<1, Geometry, true>* geoData() { return &fGeoData; }
diff --git a/src/gpu/gl/GrGLGpu.cpp b/src/gpu/gl/GrGLGpu.cpp
index 8b83dc0d71..a212b2bfff 100644
--- a/src/gpu/gl/GrGLGpu.cpp
+++ b/src/gpu/gl/GrGLGpu.cpp
@@ -1452,20 +1452,20 @@ bool GrGLGpu::flushGLState(const DrawArgs& args) {
 }
 
 void GrGLGpu::setupGeometry(const GrPrimitiveProcessor& primProc,
-                            const GrVertices& info,
+                            const GrNonInstancedVertices& vertices,
                             size_t* indexOffsetInBytes) {
     GrGLVertexBuffer* vbuf;
-    vbuf = (GrGLVertexBuffer*) info.vertexBuffer();
+    vbuf = (GrGLVertexBuffer*) vertices.vertexBuffer();
 
     SkASSERT(vbuf);
     SkASSERT(!vbuf->isMapped());
 
     GrGLIndexBuffer* ibuf = NULL;
-    if (info.isIndexed()) {
+    if (vertices.isIndexed()) {
         SkASSERT(indexOffsetInBytes);
 
         *indexOffsetInBytes = 0;
-        ibuf = (GrGLIndexBuffer*)info.indexBuffer();
+        ibuf = (GrGLIndexBuffer*)vertices.indexBuffer();
 
         SkASSERT(ibuf);
         SkASSERT(!ibuf->isMapped());
@@ -1479,7 +1479,7 @@ void GrGLGpu::setupGeometry(const GrPrimitiveProcessor& primProc,
 
         GrGLsizei stride = static_cast<GrGLsizei>(primProc.getVertexStride());
 
-        size_t vertexOffsetInBytes = stride * info.startVertex();
+        size_t vertexOffsetInBytes = stride * vertices.startVertex();
 
         vertexOffsetInBytes += vbuf->baseOffset();
 
@@ -1895,7 +1895,7 @@ GrGLenum gPrimitiveType2GLMode[] = {
     #endif
 #endif
 
-void GrGLGpu::onDraw(const DrawArgs& args, const GrVertices& vertices) {
+void GrGLGpu::onDraw(const DrawArgs& args, const GrNonInstancedVertices& vertices) {
     if (!this->flushGLState(args)) {
         return;
     }
diff --git a/src/gpu/gl/GrGLGpu.h b/src/gpu/gl/GrGLGpu.h
index 4d26ad8f7e..016547fad3 100644
--- a/src/gpu/gl/GrGLGpu.h
+++ b/src/gpu/gl/GrGLGpu.h
@@ -24,7 +24,7 @@
 #include "SkTypes.h"
 
 class GrPipeline;
-class GrVertices;
+class GrNonInstancedVertices;
 
 #ifdef SK_DEVELOPER
 #define PROGRAM_CACHE_STATS
@@ -149,7 +149,7 @@ private:
 
     void onResolveRenderTarget(GrRenderTarget* target) override;
 
-    void onDraw(const DrawArgs&, const GrVertices&) override;
+    void onDraw(const DrawArgs&, const GrNonInstancedVertices&) override;
     void onStencilPath(const GrPath*, const StencilPathState&) override;
     void onDrawPath(const DrawArgs&, const GrPath*, const GrStencilSettings&) override;
     void onDrawPaths(const DrawArgs&,
@@ -177,7 +177,7 @@ private:
     // an into the index buffer. It does not account for vertices.startIndex() but rather the start
     // index is relative to the returned offset.
     void setupGeometry(const GrPrimitiveProcessor&,
-                       const GrVertices& vertices,
+                       const GrNonInstancedVertices& vertices,
                        size_t* indexOffsetInBytes);
 
     // Subclasses should call this to flush the blend state.