Move state management to GrInOrderDrawBuffer

src/gpu/GrInOrderDrawBuffer.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrInOrderDrawBuffer_DEFINED
 #define GrInOrderDrawBuffer_DEFINED
 
@@ skipping 54 matching lines @@
         if (0 != xformBytes) {
             *xformsLocation = (float*) fPathTransformBuffer.alloc(count * xformBytes,
                                                                SkChunkAlloc::kThrow_AllocFailType);
             SkASSERT(SkIsAlign4((uintptr_t)*xformsLocation));
             memcpy(*xformsLocation, transformValues, count * xformBytes);
         }
     }
 
 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;
 
     // overrides from GrDrawTarget
     void onDrawBatch(GrBatch*, const PipelineInfo&) override;
     void onDrawRect(GrPipelineBuilder*,
                     GrColor,
                     const SkMatrix& viewMatrix,
                     const SkRect& rect,
                     const SkRect* localRect,
                     const SkMatrix* localMatrix) override;
-
     void onStencilPath(const GrPipelineBuilder&,
                        const GrPathProcessor*,
                        const GrPath*,
                        const GrScissorState&,
                        const GrStencilSettings&) override;
     void onDrawPath(const GrPathProcessor*,
                     const GrPath*,
                     const GrStencilSettings&,
                     const PipelineInfo&) override;
     void onDrawPaths(const GrPathProcessor*,
@@ skipping 17 matching lines @@
     // We lazily record clip changes in order to skip clips that have no effect.
     void recordClipIfNecessary();
     // Records any trace markers for a command
     void recordTraceMarkersIfNecessary(GrTargetCommands::Cmd*);
     SkString getCmdString(int index) const {
         SkASSERT(index < fGpuCmdMarkers.count());
         return fGpuCmdMarkers[index].toString();
     }
     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;
 };
 
 #endif