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| 1 /* | |
| 2 * Copyright 2011 Google Inc. | |
| 3 * | |
| 4 * Use of this source code is governed by a BSD-style license that can be | |
| 5 * found in the LICENSE file. | |
| 6 */ | |
| 7 | |
| 8 #ifndef GrInOrderDrawBuffer_DEFINED | |
| 9 #define GrInOrderDrawBuffer_DEFINED | |
| 10 | |
| 11 #include "GrDrawTarget.h" | |
| 12 #include "GrCommandBuilder.h" | |
| 13 #include "SkChunkAlloc.h" | |
| 14 | |
| 15 /** | |
| 16 * GrInOrderDrawBuffer is an implementation of GrDrawTarget that queues up draws
for eventual | |
| 17 * playback into a GrGpu. In theory one draw buffer could playback into another.
When index or | |
| 18 * vertex buffers are used as geometry sources it is the callers the draw buffer
only holds | |
| 19 * references to the buffers. It is the callers responsibility to ensure that th
e data is still | |
| 20 * valid when the draw buffer is played back into a GrGpu. Similarly, it is the
caller's | |
| 21 * responsibility to ensure that all referenced textures, buffers, and render-ta
rgets are associated | |
| 22 * in the GrGpu object that the buffer is played back into. The buffer requires
VB and IB pools to | |
| 23 * store geometry. | |
| 24 */ | |
| 25 class GrInOrderDrawBuffer : public GrClipTarget { | |
| 26 public: | |
| 27 | |
| 28 /** | |
| 29 * Creates a GrInOrderDrawBuffer | |
| 30 * | |
| 31 * @param context the context object that owns this draw buffer. | |
| 32 */ | |
| 33 GrInOrderDrawBuffer(GrContext* context); | |
| 34 | |
| 35 ~GrInOrderDrawBuffer() override; | |
| 36 | |
| 37 void clearStencilClip(const SkIRect& rect, | |
| 38 bool insideClip, | |
| 39 GrRenderTarget* renderTarget) override; | |
| 40 | |
| 41 void discard(GrRenderTarget*) override; | |
| 42 | |
| 43 protected: | |
| 44 void appendIndicesAndTransforms(const void* indexValues, PathIndexType index
Type, | |
| 45 const float* transformValues, PathTransformT
ype transformType, | |
| 46 int count, char** indicesLocation, float** x
formsLocation) { | |
| 47 int indexBytes = GrPathRange::PathIndexSizeInBytes(indexType); | |
| 48 *indicesLocation = (char*) fPathIndexBuffer.alloc(count * indexBytes, | |
| 49 SkChunkAlloc::kThrow_A
llocFailType); | |
| 50 SkASSERT(SkIsAlign4((uintptr_t)*indicesLocation)); | |
| 51 memcpy(*indicesLocation, reinterpret_cast<const char*>(indexValues), cou
nt * indexBytes); | |
| 52 | |
| 53 const int xformBytes = GrPathRendering::PathTransformSize(transformType)
* sizeof(float); | |
| 54 *xformsLocation = NULL; | |
| 55 | |
| 56 if (0 != xformBytes) { | |
| 57 *xformsLocation = (float*) fPathTransformBuffer.alloc(count * xformB
ytes, | |
| 58 SkChunkAlloc::kTh
row_AllocFailType); | |
| 59 SkASSERT(SkIsAlign4((uintptr_t)*xformsLocation)); | |
| 60 memcpy(*xformsLocation, transformValues, count * xformBytes); | |
| 61 } | |
| 62 } | |
| 63 | |
| 64 private: | |
| 65 friend class GrInOrderCommandBuilder; | |
| 66 friend class GrTargetCommands; | |
| 67 | |
| 68 typedef GrTargetCommands::State State; | |
| 69 | |
| 70 State* allocState(const GrPrimitiveProcessor* primProc = NULL) { | |
| 71 void* allocation = fPipelineBuffer.alloc(sizeof(State), SkChunkAlloc::kT
hrow_AllocFailType); | |
| 72 return SkNEW_PLACEMENT_ARGS(allocation, State, (primProc)); | |
| 73 } | |
| 74 | |
| 75 void unallocState(State* state) { | |
| 76 state->unref(); | |
| 77 fPipelineBuffer.unalloc(state); | |
| 78 } | |
| 79 | |
| 80 void onReset() override; | |
| 81 void onFlush() override; | |
| 82 | |
| 83 // overrides from GrDrawTarget | |
| 84 void onDrawBatch(GrBatch*, const PipelineInfo&) override; | |
| 85 void onStencilPath(const GrPipelineBuilder&, | |
| 86 const GrPathProcessor*, | |
| 87 const GrPath*, | |
| 88 const GrScissorState&, | |
| 89 const GrStencilSettings&) override; | |
| 90 void onDrawPath(const GrPathProcessor*, | |
| 91 const GrPath*, | |
| 92 const GrStencilSettings&, | |
| 93 const PipelineInfo&) override; | |
| 94 void onDrawPaths(const GrPathProcessor*, | |
| 95 const GrPathRange*, | |
| 96 const void* indices, | |
| 97 PathIndexType, | |
| 98 const float transformValues[], | |
| 99 PathTransformType, | |
| 100 int count, | |
| 101 const GrStencilSettings&, | |
| 102 const PipelineInfo&) override; | |
| 103 void onClear(const SkIRect* rect, | |
| 104 GrColor color, | |
| 105 bool canIgnoreRect, | |
| 106 GrRenderTarget* renderTarget) override; | |
| 107 void onCopySurface(GrSurface* dst, | |
| 108 GrSurface* src, | |
| 109 const SkIRect& srcRect, | |
| 110 const SkIPoint& dstPoint) override; | |
| 111 | |
| 112 // Records any trace markers for a command | |
| 113 void recordTraceMarkersIfNecessary(GrTargetCommands::Cmd*); | |
| 114 SkString getCmdString(int index) const { | |
| 115 SkASSERT(index < fGpuCmdMarkers.count()); | |
| 116 return fGpuCmdMarkers[index].toString(); | |
| 117 } | |
| 118 bool isIssued(uint32_t drawID) override { return drawID != fDrawID; } | |
| 119 | |
| 120 State* SK_WARN_UNUSED_RESULT setupPipelineAndShouldDraw(const GrPrimitivePro
cessor*, | |
| 121 const GrDrawTarget::
PipelineInfo&); | |
| 122 State* SK_WARN_UNUSED_RESULT setupPipelineAndShouldDraw(GrBatch*, | |
| 123 const GrDrawTarget::
PipelineInfo&); | |
| 124 | |
| 125 // TODO: Use a single allocator for commands and records | |
| 126 enum { | |
| 127 kPathIdxBufferMinReserve = 2 * 64, // 64 uint16_t's | |
| 128 kPathXformBufferMinReserve = 2 * 64, // 64 two-float transforms | |
| 129 kPipelineBufferMinReserve = 32 * sizeof(State), | |
| 130 }; | |
| 131 | |
| 132 // every 100 flushes we should reset our fPipelineBuffer to prevent us from
holding at a | |
| 133 // highwater mark | |
| 134 static const int kPipelineBufferHighWaterMark = 100; | |
| 135 | |
| 136 SkAutoTDelete<GrCommandBuilder> fCommands; | |
| 137 SkTArray<GrTraceMarkerSet, false> fGpuCmdMarkers; | |
| 138 SkChunkAlloc fPathIndexBuffer; | |
| 139 SkChunkAlloc fPathTransformBuffer; | |
| 140 SkChunkAlloc fPipelineBuffer; | |
| 141 uint32_t fDrawID; | |
| 142 SkAutoTUnref<State> fPrevState; | |
| 143 | |
| 144 typedef GrClipTarget INHERITED; | |
| 145 }; | |
| 146 | |
| 147 #endif | |
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Chromium Code Reviews
Issue 1261033002:
Rename GrInOrderDrawBuffer to GrBufferedDrawTarget (Closed)
Base URL: https://skia.googlesource.com/skia.git@master