| |
| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkGpuDevice_DEFINED |
| #define SkGpuDevice_DEFINED |
| |
| #include "SkGr.h" |
| #include "SkBitmap.h" |
| #include "SkDevice.h" |
| #include "SkPicture.h" |
| #include "SkRegion.h" |
| #include "SkSurface.h" |
| #include "GrContext.h" |
| #include "GrSurfacePriv.h" |
| |
| struct SkDrawProcs; |
| struct GrSkDrawProcs; |
| |
| class GrAccelData; |
| struct GrCachedLayer; |
| class GrTextContext; |
| |
| /** |
| * Subclass of SkBaseDevice, which directs all drawing to the GrGpu owned by the |
| * canvas. |
| */ |
| class SK_API SkGpuDevice : public SkBaseDevice { |
| public: |
| enum Flags { |
| kNeedClear_Flag = 1 << 0, //!< Surface requires an initial clear |
| }; |
| |
| /** |
| * Creates an SkGpuDevice from a GrRenderTarget. |
| */ |
| static SkGpuDevice* Create(GrRenderTarget* target, const SkSurfaceProps*, unsigned flags = 0); |
| |
| /** |
| * New device that will create an offscreen renderTarget based on the ImageInfo and |
| * sampleCount. The Budgeted param controls whether the device's backing store counts against |
| * the resource cache budget. On failure, returns NULL. |
| */ |
| static SkGpuDevice* Create(GrContext*, SkSurface::Budgeted, const SkImageInfo&, |
| int sampleCount, const SkSurfaceProps*, unsigned flags = 0); |
| |
| virtual ~SkGpuDevice(); |
| |
| SkGpuDevice* cloneDevice(const SkSurfaceProps& props) { |
| SkBaseDevice* dev = this->onCreateDevice(CreateInfo(this->imageInfo(), kPossible_TileUsage, |
| props.pixelGeometry()), |
| NULL); |
| return static_cast<SkGpuDevice*>(dev); |
| } |
| |
| GrContext* context() const { return fContext; } |
| |
| // set all pixels to 0 |
| void clearAll(); |
| |
| void replaceRenderTarget(bool shouldRetainContent); |
| |
| GrRenderTarget* accessRenderTarget() SK_OVERRIDE; |
| |
| SkImageInfo imageInfo() const SK_OVERRIDE { |
| return fRenderTarget ? fRenderTarget->surfacePriv().info() : SkImageInfo::MakeUnknown(); |
| } |
| |
| const SkSurfaceProps& surfaceProps() const { return fSurfaceProps; } |
| |
| void drawPaint(const SkDraw&, const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode, size_t count, |
| const SkPoint[], const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawRect(const SkDraw&, const SkRect& r, |
| const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawRRect(const SkDraw&, const SkRRect& r, |
| const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawDRRect(const SkDraw& draw, const SkRRect& outer, |
| const SkRRect& inner, const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawOval(const SkDraw&, const SkRect& oval, |
| const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawPath(const SkDraw&, const SkPath& path, |
| const SkPaint& paint, const SkMatrix* prePathMatrix, |
| bool pathIsMutable) SK_OVERRIDE; |
| virtual void drawBitmap(const SkDraw&, const SkBitmap& bitmap, |
| const SkMatrix&, const SkPaint&) SK_OVERRIDE; |
| virtual void drawBitmapRect(const SkDraw&, const SkBitmap&, |
| const SkRect* srcOrNull, const SkRect& dst, |
| const SkPaint& paint, |
| SkCanvas::DrawBitmapRectFlags flags) SK_OVERRIDE; |
| virtual void drawSprite(const SkDraw&, const SkBitmap& bitmap, |
| int x, int y, const SkPaint& paint) SK_OVERRIDE; |
| virtual void drawText(const SkDraw&, const void* text, size_t len, |
| SkScalar x, SkScalar y, const SkPaint&) SK_OVERRIDE; |
| virtual void drawPosText(const SkDraw&, const void* text, size_t len, |
| const SkScalar pos[], int scalarsPerPos, |
| const SkPoint& offset, const SkPaint&) SK_OVERRIDE; |
| virtual void drawVertices(const SkDraw&, SkCanvas::VertexMode, int vertexCount, |
| const SkPoint verts[], const SkPoint texs[], |
| const SkColor colors[], SkXfermode* xmode, |
| const uint16_t indices[], int indexCount, |
| const SkPaint&) SK_OVERRIDE; |
| virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y, |
| const SkPaint&) SK_OVERRIDE; |
| |
| void flush() SK_OVERRIDE; |
| |
| void onAttachToCanvas(SkCanvas* canvas) SK_OVERRIDE; |
| void onDetachFromCanvas() SK_OVERRIDE; |
| |
| const SkBitmap& onAccessBitmap() SK_OVERRIDE; |
| |
| bool canHandleImageFilter(const SkImageFilter*) SK_OVERRIDE; |
| virtual bool filterImage(const SkImageFilter*, const SkBitmap&, |
| const SkImageFilter::Context&, |
| SkBitmap*, SkIPoint*) SK_OVERRIDE; |
| |
| bool filterTexture(GrContext*, GrTexture*, const SkImageFilter*, |
| const SkImageFilter::Context&, |
| SkBitmap* result, SkIPoint* offset); |
| |
| protected: |
| bool onReadPixels(const SkImageInfo&, void*, size_t, int, int) SK_OVERRIDE; |
| bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) SK_OVERRIDE; |
| bool onShouldDisableLCD(const SkPaint&) const SK_OVERRIDE; |
| |
| /** PRIVATE / EXPERIMENTAL -- do not call */ |
| virtual bool EXPERIMENTAL_drawPicture(SkCanvas* canvas, const SkPicture* picture, |
| const SkMatrix*, const SkPaint*) SK_OVERRIDE; |
| |
| private: |
| GrContext* fContext; |
| GrSkDrawProcs* fDrawProcs; |
| SkAutoTUnref<const SkClipStack> fClipStack; |
| SkIPoint fClipOrigin; |
| GrClip fClip; |
| GrTextContext* fTextContext; |
| SkSurfaceProps fSurfaceProps; |
| GrRenderTarget* fRenderTarget; |
| // remove when our clients don't rely on accessBitmap() |
| SkBitmap fLegacyBitmap; |
| bool fNeedClear; |
| |
| SkGpuDevice(GrRenderTarget*, const SkSurfaceProps*, unsigned flags); |
| |
| SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*) SK_OVERRIDE; |
| |
| SkSurface* newSurface(const SkImageInfo&, const SkSurfaceProps&) SK_OVERRIDE; |
| |
| SkImageFilter::Cache* getImageFilterCache() SK_OVERRIDE; |
| |
| bool forceConservativeRasterClip() const SK_OVERRIDE { return true; } |
| |
| // sets the render target and clip on context |
| void prepareDraw(const SkDraw&); |
| |
| /** |
| * Implementation for both drawBitmap and drawBitmapRect. |
| */ |
| void drawBitmapCommon(const SkDraw&, |
| const SkBitmap& bitmap, |
| const SkRect* srcRectPtr, |
| const SkSize* dstSizePtr, // ignored iff srcRectPtr == NULL |
| const SkPaint&, |
| SkCanvas::DrawBitmapRectFlags flags); |
| |
| /** |
| * Helper functions called by drawBitmapCommon. By the time these are called the SkDraw's |
| * matrix, clip, and the device's render target has already been set on GrContext. |
| */ |
| |
| // The tileSize and clippedSrcRect will be valid only if true is returned. |
| bool shouldTileBitmap(const SkBitmap& bitmap, |
| const SkMatrix& viewMatrix, |
| const GrTextureParams& sampler, |
| const SkRect* srcRectPtr, |
| int maxTileSize, |
| int* tileSize, |
| SkIRect* clippedSrcRect) const; |
| void internalDrawBitmap(const SkBitmap&, |
| const SkMatrix& viewMatrix, |
| const SkRect&, |
| const GrTextureParams& params, |
| const SkPaint& paint, |
| SkCanvas::DrawBitmapRectFlags flags, |
| bool bicubic, |
| bool needsTextureDomain); |
| void drawTiledBitmap(const SkBitmap& bitmap, |
| const SkMatrix& viewMatrix, |
| const SkRect& srcRect, |
| const SkIRect& clippedSrcRect, |
| const GrTextureParams& params, |
| const SkPaint& paint, |
| SkCanvas::DrawBitmapRectFlags flags, |
| int tileSize, |
| bool bicubic); |
| |
| void internalDrawPath(const SkPath& origSrcPath, const SkPaint& paint, |
| const SkMatrix& origViewMatrix, const SkMatrix* prePathMatrix, |
| const SkIRect& clipBounds, bool pathIsMutable); |
| |
| bool drawDashLine(const SkPoint pts[2], const SkPaint& paint); |
| |
| static SkPicture::AccelData::Key ComputeAccelDataKey(); |
| |
| static GrRenderTarget* CreateRenderTarget(GrContext*, SkSurface::Budgeted, const SkImageInfo&, |
| int sampleCount); |
| |
| friend class GrTextContext; |
| typedef SkBaseDevice INHERITED; |
| }; |
| |
| #endif |