Move state management to GrInOrderDrawBuffer

src/gpu/GrInOrderDrawBuffer.h

Index: src/gpu/GrInOrderDrawBuffer.h
diff --git a/src/gpu/GrInOrderDrawBuffer.h b/src/gpu/GrInOrderDrawBuffer.h
index ce82c889a76037d7ed751308d8f630bf77dff12a..b253768f84bdde01d8b8844fc039dcb9dc6fa334 100644
--- a/src/gpu/GrInOrderDrawBuffer.h
+++ b/src/gpu/GrInOrderDrawBuffer.h
@@ -72,6 +72,17 @@ protected:
 
 private:
     friend class GrTargetCommands;
+    typedef GrTargetCommands::State State;
+
+    State* allocState(const GrPrimitiveProcessor* primProc = NULL) {
+        void* allocation = fPipelineBuffer.alloc(sizeof(State), SkChunkAlloc::kThrow_AllocFailType);
+        return SkNEW_PLACEMENT_ARGS(allocation, State, (primProc));
+    }
+
+    void unallocState(State* state) {
+        state->unref();
+        fPipelineBuffer.unalloc(state);
+    }
 
     void onReset() override;
     void onFlush() override;
@@ -84,7 +95,6 @@ private:
                     const SkRect& rect,
                     const SkRect* localRect,
                     const SkMatrix* localMatrix) override;
-
     void onStencilPath(const GrPipelineBuilder&,
                        const GrPathProcessor*,
                        const GrPath*,
@@ -122,17 +132,29 @@ private:
     }
     bool isIssued(uint32_t drawID) override { return drawID != fDrawID; }
 
+    State* SK_WARN_UNUSED_RESULT setupPipelineAndShouldDraw(const GrPrimitiveProcessor*,
+                                                            const GrDrawTarget::PipelineInfo&);
+    State* SK_WARN_UNUSED_RESULT setupPipelineAndShouldDraw(GrBatch*,
+                                                            const GrDrawTarget::PipelineInfo&);
+
     // TODO: Use a single allocator for commands and records
     enum {
         kPathIdxBufferMinReserve     = 2 * 64,  // 64 uint16_t's
         kPathXformBufferMinReserve   = 2 * 64,  // 64 two-float transforms
+        kPipelineBufferMinReserve    = 32 * sizeof(State),
     };
 
+    // every 100 flushes we should reset our fPipelineBuffer to prevent us from holding at a
+    // highwater mark
+    static const int kPipelineBufferHighWaterMark = 100;
+
     GrTargetCommands                    fCommands;
     SkTArray<GrTraceMarkerSet, false>   fGpuCmdMarkers;
     SkChunkAlloc                        fPathIndexBuffer;
     SkChunkAlloc                        fPathTransformBuffer;
+    SkChunkAlloc                        fPipelineBuffer;
     uint32_t                            fDrawID;
+    SkAutoTUnref<State>                 fPrevState;
 
     typedef GrClipTarget INHERITED;
 };