| /* |
| * 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 |
| |
| #include "GrDrawTarget.h" |
| #include "GrGpu.h" |
| #include "GrIndexBuffer.h" |
| #include "GrOptDrawState.h" |
| #include "GrPath.h" |
| #include "GrPathRange.h" |
| #include "GrRenderTarget.h" |
| #include "GrSurface.h" |
| #include "GrTRecorder.h" |
| #include "GrVertexBuffer.h" |
| |
| #include "SkClipStack.h" |
| #include "SkTemplates.h" |
| #include "SkTypes.h" |
| |
| class GrIndexBufferAllocPool; |
| class GrVertexBufferAllocPool; |
| |
| /** |
| * GrInOrderDrawBuffer is an implementation of GrDrawTarget that queues up draws for eventual |
| * playback into a GrGpu. In theory one draw buffer could playback into another. When index or |
| * vertex buffers are used as geometry sources it is the callers the draw buffer only holds |
| * references to the buffers. It is the callers responsibility to ensure that the data is still |
| * valid when the draw buffer is played back into a GrGpu. Similarly, it is the caller's |
| * responsibility to ensure that all referenced textures, buffers, and render-targets are associated |
| * in the GrGpu object that the buffer is played back into. The buffer requires VB and IB pools to |
| * store geometry. |
| */ |
| class GrInOrderDrawBuffer : public GrClipTarget { |
| public: |
| |
| /** |
| * Creates a GrInOrderDrawBuffer |
| * |
| * @param gpu the gpu object that this draw buffer flushes to. |
| * @param vertexPool pool where vertices for queued draws will be saved when |
| * the vertex source is either reserved or array. |
| * @param indexPool pool where indices for queued draws will be saved when |
| * the index source is either reserved or array. |
| */ |
| GrInOrderDrawBuffer(GrGpu* gpu, |
| GrVertexBufferAllocPool* vertexPool, |
| GrIndexBufferAllocPool* indexPool); |
| |
| virtual ~GrInOrderDrawBuffer(); |
| |
| /** |
| * Empties the draw buffer of any queued up draws. This must not be called while inside an |
| * unbalanced pushGeometrySource(). The current draw state and clip are preserved. |
| */ |
| void reset(); |
| |
| /** |
| * This plays the queued up draws to its GrGpu target. It also resets this object (i.e. flushing |
| * is destructive). This buffer must not have an active reserved vertex or index source. Any |
| * reserved geometry on the target will be finalized because it's geometry source will be pushed |
| * before flushing and popped afterwards. |
| */ |
| void flush(); |
| |
| // tracking for draws |
| virtual DrawToken getCurrentDrawToken() { return DrawToken(this, fDrawID); } |
| |
| // overrides from GrDrawTarget |
| virtual bool geometryHints(size_t vertexStride, |
| int* vertexCount, |
| int* indexCount) const SK_OVERRIDE; |
| |
| virtual bool copySurface(GrSurface* dst, |
| GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint) SK_OVERRIDE; |
| |
| virtual bool canCopySurface(const GrSurface* dst, |
| const GrSurface* src, |
| const SkIRect& srcRect, |
| const SkIPoint& dstPoint) SK_OVERRIDE; |
| |
| virtual void clearStencilClip(const SkIRect& rect, |
| bool insideClip, |
| GrRenderTarget* renderTarget) SK_OVERRIDE; |
| |
| virtual void discard(GrRenderTarget*) SK_OVERRIDE; |
| |
| virtual void initCopySurfaceDstDesc(const GrSurface* src, GrSurfaceDesc* desc) SK_OVERRIDE; |
| |
| private: |
| typedef GrClipMaskManager::ScissorState ScissorState; |
| enum { |
| kDraw_Cmd = 1, |
| kStencilPath_Cmd = 2, |
| kSetState_Cmd = 3, |
| kClear_Cmd = 4, |
| kCopySurface_Cmd = 5, |
| kDrawPath_Cmd = 6, |
| kDrawPaths_Cmd = 7, |
| }; |
| |
| struct Cmd : ::SkNoncopyable { |
| Cmd(uint8_t type) : fType(type) {} |
| virtual ~Cmd() {} |
| |
| virtual void execute(GrInOrderDrawBuffer*, const GrOptDrawState*) = 0; |
| |
| uint8_t fType; |
| }; |
| |
| struct Draw : public Cmd { |
| Draw(const DrawInfo& info) : Cmd(kDraw_Cmd), fInfo(info) {} |
| |
| virtual void execute(GrInOrderDrawBuffer*, const GrOptDrawState*); |
| |
| DrawInfo fInfo; |
| }; |
| |
| struct StencilPath : public Cmd { |
| StencilPath(const GrPath* path) : Cmd(kStencilPath_Cmd), fPath(path) {} |
| |
| const GrPath* path() const { return fPath.get(); } |
| |
| virtual void execute(GrInOrderDrawBuffer*, const GrOptDrawState*); |
| |
| GrStencilSettings fStencilSettings; |
| |
| private: |
| GrPendingIOResource<const GrPath, kRead_GrIOType> fPath; |
| }; |
| |
| struct DrawPath : public Cmd { |
| DrawPath(const GrPath* path) : Cmd(kDrawPath_Cmd), fPath(path) {} |
| |
| const GrPath* path() const { return fPath.get(); } |
| |
| virtual void execute(GrInOrderDrawBuffer*, const GrOptDrawState*); |
| |
| GrStencilSettings fStencilSettings; |
| |
| private: |
| GrPendingIOResource<const GrPath, kRead_GrIOType> fPath; |
| }; |
| |
| struct DrawPaths : public Cmd { |
| DrawPaths(const GrPathRange* pathRange) : Cmd(kDrawPaths_Cmd), fPathRange(pathRange) {} |
| |
| const GrPathRange* pathRange() const { return fPathRange.get(); } |
| |
| virtual void execute(GrInOrderDrawBuffer*, const GrOptDrawState*); |
| |
| int fIndicesLocation; |
| size_t fCount; |
| int fTransformsLocation; |
| PathTransformType fTransformsType; |
| GrStencilSettings fStencilSettings; |
| |
| private: |
| GrPendingIOResource<const GrPathRange, kRead_GrIOType> fPathRange; |
| }; |
| |
| // This is also used to record a discard by setting the color to GrColor_ILLEGAL |
| struct Clear : public Cmd { |
| Clear(GrRenderTarget* rt) : Cmd(kClear_Cmd), fRenderTarget(rt) {} |
| |
| GrRenderTarget* renderTarget() const { return fRenderTarget.get(); } |
| |
| virtual void execute(GrInOrderDrawBuffer*, const GrOptDrawState*); |
| |
| SkIRect fRect; |
| GrColor fColor; |
| bool fCanIgnoreRect; |
| |
| private: |
| GrPendingIOResource<GrRenderTarget, kWrite_GrIOType> fRenderTarget; |
| }; |
| |
| // This command is ONLY used by the clip mask manager to clear the stencil clip bits |
| struct ClearStencilClip : public Cmd { |
| ClearStencilClip(GrRenderTarget* rt) : Cmd(kClear_Cmd), fRenderTarget(rt) {} |
| |
| GrRenderTarget* renderTarget() const { return fRenderTarget.get(); } |
| |
| virtual void execute(GrInOrderDrawBuffer*, const GrOptDrawState*); |
| |
| SkIRect fRect; |
| bool fInsideClip; |
| |
| private: |
| GrPendingIOResource<GrRenderTarget, kWrite_GrIOType> fRenderTarget; |
| }; |
| |
| struct CopySurface : public Cmd { |
| CopySurface(GrSurface* dst, GrSurface* src) : Cmd(kCopySurface_Cmd), fDst(dst), fSrc(src) {} |
| |
| GrSurface* dst() const { return fDst.get(); } |
| GrSurface* src() const { return fSrc.get(); } |
| |
| virtual void execute(GrInOrderDrawBuffer*, const GrOptDrawState*); |
| |
| SkIPoint fDstPoint; |
| SkIRect fSrcRect; |
| |
| private: |
| GrPendingIOResource<GrSurface, kWrite_GrIOType> fDst; |
| GrPendingIOResource<GrSurface, kRead_GrIOType> fSrc; |
| }; |
| |
| struct SetState : public Cmd { |
| SetState(const GrOptDrawState* state) : Cmd(kSetState_Cmd), fState(SkRef(state)) {} |
| |
| virtual void execute(GrInOrderDrawBuffer*, const GrOptDrawState*); |
| |
| SkAutoTUnref<const GrOptDrawState> fState; |
| GrGpu::DrawType fDrawType; |
| }; |
| |
| typedef void* TCmdAlign; // This wouldn't be enough align if a command used long double. |
| typedef GrTRecorder<Cmd, TCmdAlign> CmdBuffer; |
| |
| // overrides from GrDrawTarget |
| void onDraw(const GrDrawState&, |
| const DrawInfo&, |
| const ScissorState&, |
| const GrDeviceCoordTexture* dstCopy) SK_OVERRIDE; |
| void onDrawRect(GrDrawState*, |
| const SkRect& rect, |
| const SkRect* localRect, |
| const SkMatrix* localMatrix) SK_OVERRIDE; |
| |
| void onStencilPath(const GrDrawState&, |
| const GrPath*, |
| const ScissorState&, |
| const GrStencilSettings&) SK_OVERRIDE; |
| void onDrawPath(const GrDrawState&, |
| const GrPath*, |
| const ScissorState&, |
| const GrStencilSettings&, |
| const GrDeviceCoordTexture* dstCopy) SK_OVERRIDE; |
| void onDrawPaths(const GrDrawState&, |
| const GrPathRange*, |
| const uint32_t indices[], |
| int count, |
| const float transforms[], |
| PathTransformType, |
| const ScissorState&, |
| const GrStencilSettings&, |
| const GrDeviceCoordTexture*) SK_OVERRIDE; |
| void onClear(const SkIRect* rect, |
| GrColor color, |
| bool canIgnoreRect, |
| GrRenderTarget* renderTarget) SK_OVERRIDE; |
| void setDrawBuffers(DrawInfo*) SK_OVERRIDE; |
| |
| bool onReserveVertexSpace(size_t vertexSize, int vertexCount, void** vertices) SK_OVERRIDE; |
| bool onReserveIndexSpace(int indexCount, void** indices) SK_OVERRIDE; |
| void releaseReservedVertexSpace() SK_OVERRIDE; |
| void releaseReservedIndexSpace() SK_OVERRIDE; |
| void geometrySourceWillPush() SK_OVERRIDE; |
| void geometrySourceWillPop(const GeometrySrcState& restoredState) SK_OVERRIDE; |
| void willReserveVertexAndIndexSpace(int vertexCount, |
| size_t vertexStride, |
| int indexCount) SK_OVERRIDE; |
| |
| // Attempts to concat instances from info onto the previous draw. info must represent an |
| // instanced draw. The caller must have already recorded a new draw state and clip if necessary. |
| int concatInstancedDraw(const GrDrawState&, const DrawInfo&); |
| |
| // Determines whether the current draw operation requires a new GrOptDrawState and if so |
| // records it. If the draw can be skipped false is returned and no new GrOptDrawState is |
| // recorded. |
| bool SK_WARN_UNUSED_RESULT recordStateAndShouldDraw(const GrDrawState&, |
| GrGpu::DrawType, |
| const GrClipMaskManager::ScissorState&, |
| const GrDeviceCoordTexture*); |
| // We lazily record clip changes in order to skip clips that have no effect. |
| void recordClipIfNecessary(); |
| // Records any trace markers for a command after adding it to the buffer. |
| void recordTraceMarkersIfNecessary(); |
| |
| virtual bool isIssued(uint32_t drawID) { return drawID != fDrawID; } |
| |
| // TODO: Use a single allocator for commands and records |
| enum { |
| kCmdBufferInitialSizeInBytes = 8 * 1024, |
| kPathIdxBufferMinReserve = 64, |
| kPathXformBufferMinReserve = 2 * kPathIdxBufferMinReserve, |
| kGeoPoolStatePreAllocCnt = 4, |
| }; |
| |
| struct GeometryPoolState { |
| const GrVertexBuffer* fPoolVertexBuffer; |
| int fPoolStartVertex; |
| const GrIndexBuffer* fPoolIndexBuffer; |
| int fPoolStartIndex; |
| // caller may conservatively over reserve vertices / indices. |
| // we release unused space back to allocator if possible |
| // can only do this if there isn't an intervening pushGeometrySource() |
| size_t fUsedPoolVertexBytes; |
| size_t fUsedPoolIndexBytes; |
| }; |
| |
| typedef SkSTArray<kGeoPoolStatePreAllocCnt, GeometryPoolState> GeoPoolStateStack; |
| |
| CmdBuffer fCmdBuffer; |
| SkAutoTUnref<const GrOptDrawState> fLastState; |
| SkTArray<GrTraceMarkerSet, false> fGpuCmdMarkers; |
| GrGpu* fDstGpu; |
| GrVertexBufferAllocPool& fVertexPool; |
| GrIndexBufferAllocPool& fIndexPool; |
| SkTDArray<uint32_t> fPathIndexBuffer; |
| SkTDArray<float> fPathTransformBuffer; |
| GeoPoolStateStack fGeoPoolStateStack; |
| bool fFlushing; |
| uint32_t fDrawID; |
| |
| typedef GrClipTarget INHERITED; |
| }; |
| |
| #endif |