| /* |
| * 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 "SkClipStackDevice.h" |
| #include "SkPicture.h" |
| #include "SkRegion.h" |
| #include "SkSurface.h" |
| #include "GrClipStackClip.h" |
| #include "GrRenderTargetContext.h" |
| #include "GrContext.h" |
| #include "GrSurfacePriv.h" |
| #include "GrTypes.h" |
| |
| class GrAccelData; |
| class GrTextureProducer; |
| struct GrCachedLayer; |
| |
| class SkSpecialImage; |
| |
| /** |
| * Subclass of SkBaseDevice, which directs all drawing to the GrGpu owned by the |
| * canvas. |
| */ |
| class SK_API SkGpuDevice : public SkClipStackDevice { |
| public: |
| enum InitContents { |
| kClear_InitContents, |
| kUninit_InitContents |
| }; |
| |
| /** |
| * Creates an SkGpuDevice from a GrRenderTargetContext whose backing width/height is |
| * different than its actual width/height (e.g., approx-match scratch texture). |
| */ |
| static sk_sp<SkGpuDevice> Make(GrContext*, sk_sp<GrRenderTargetContext> renderTargetContext, |
| int width, int height, InitContents); |
| |
| /** |
| * 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 nullptr. |
| * This entry point creates a kExact backing store. It is used when creating SkGpuDevices |
| * for SkSurfaces. |
| */ |
| static sk_sp<SkGpuDevice> Make(GrContext*, SkBudgeted, const SkImageInfo&, |
| int sampleCount, GrSurfaceOrigin, |
| const SkSurfaceProps*, InitContents); |
| |
| ~SkGpuDevice() override {} |
| |
| GrContext* context() const override { return fContext.get(); } |
| |
| // set all pixels to 0 |
| void clearAll(); |
| |
| void replaceRenderTargetContext(bool shouldRetainContent); |
| |
| GrRenderTargetContext* accessRenderTargetContext() override; |
| |
| void drawPaint(const SkPaint& paint) override; |
| void drawPoints(SkCanvas::PointMode mode, size_t count, const SkPoint[], |
| const SkPaint& paint) override; |
| void drawRect(const SkRect& r, const SkPaint& paint) override; |
| void drawRRect(const SkRRect& r, const SkPaint& paint) override; |
| void drawDRRect(const SkRRect& outer, const SkRRect& inner, |
| const SkPaint& paint) override; |
| void drawRegion(const SkRegion& r, const SkPaint& paint) override; |
| void drawOval(const SkRect& oval, const SkPaint& paint) override; |
| void drawArc(const SkRect& oval, SkScalar startAngle, SkScalar sweepAngle, |
| bool useCenter, const SkPaint& paint) override; |
| void drawPath(const SkPath& path, const SkPaint& paint, |
| const SkMatrix* prePathMatrix, bool pathIsMutable) override; |
| void drawBitmap(const SkBitmap&, SkScalar x, SkScalar y, |
| const SkPaint&) override; |
| void drawBitmapRect(const SkBitmap&, const SkRect* srcOrNull, const SkRect& dst, |
| const SkPaint& paint, SkCanvas::SrcRectConstraint) override; |
| void drawSprite(const SkBitmap& bitmap, int x, int y, |
| const SkPaint& paint) override; |
| void drawText(const void* text, size_t len, SkScalar x, SkScalar y, |
| const SkPaint&) override; |
| void drawPosText(const void* text, size_t len, const SkScalar pos[], |
| int scalarsPerPos, const SkPoint& offset, const SkPaint&) override; |
| void drawTextBlob(const SkTextBlob*, SkScalar x, SkScalar y, |
| const SkPaint& paint, SkDrawFilter* drawFilter) override; |
| void drawVertices(const SkVertices*, SkBlendMode, const SkPaint&) override; |
| void drawShadow(const SkPath&, const SkDrawShadowRec&) override; |
| void drawAtlas(const SkImage* atlas, const SkRSXform[], const SkRect[], |
| const SkColor[], int count, SkBlendMode, const SkPaint&) override; |
| void drawDevice(SkBaseDevice*, int x, int y, const SkPaint&) override; |
| |
| void drawImage(const SkImage*, SkScalar x, SkScalar y, const SkPaint&) override; |
| void drawImageRect(const SkImage*, const SkRect* src, const SkRect& dst, |
| const SkPaint&, SkCanvas::SrcRectConstraint) override; |
| |
| void drawImageNine(const SkImage* image, const SkIRect& center, |
| const SkRect& dst, const SkPaint& paint) override; |
| void drawBitmapNine(const SkBitmap& bitmap, const SkIRect& center, |
| const SkRect& dst, const SkPaint& paint) override; |
| |
| void drawImageLattice(const SkImage*, const SkCanvas::Lattice&, |
| const SkRect& dst, const SkPaint&) override; |
| void drawBitmapLattice(const SkBitmap&, const SkCanvas::Lattice&, |
| const SkRect& dst, const SkPaint&) override; |
| |
| void drawSpecial(SkSpecialImage*, int left, int top, const SkPaint& paint, |
| SkImage*, const SkMatrix&) override; |
| sk_sp<SkSpecialImage> makeSpecial(const SkBitmap&) override; |
| sk_sp<SkSpecialImage> makeSpecial(const SkImage*) override; |
| sk_sp<SkSpecialImage> snapSpecial() override; |
| |
| void flush() override; |
| bool flushAndSignalSemaphores(int numSemaphores, GrBackendSemaphore* signalSemaphores); |
| bool wait(int numSemaphores, const GrBackendSemaphore* waitSemaphores); |
| |
| bool onAccessPixels(SkPixmap*) override; |
| |
| protected: |
| bool onReadPixels(const SkImageInfo&, void*, size_t, int, int) override; |
| bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) override; |
| bool onShouldDisableLCD(const SkPaint&) const final; |
| |
| private: |
| // We want these unreffed in RenderTargetContext, GrContext order. |
| sk_sp<GrContext> fContext; |
| sk_sp<GrRenderTargetContext> fRenderTargetContext; |
| |
| SkISize fSize; |
| bool fOpaque; |
| |
| enum Flags { |
| kNeedClear_Flag = 1 << 0, //!< Surface requires an initial clear |
| kIsOpaque_Flag = 1 << 1, //!< Hint from client that rendering to this device will be |
| // opaque even if the config supports alpha. |
| }; |
| static bool CheckAlphaTypeAndGetFlags(const SkImageInfo* info, InitContents init, |
| unsigned* flags); |
| |
| SkGpuDevice(GrContext*, sk_sp<GrRenderTargetContext>, int width, int height, unsigned flags); |
| |
| SkBaseDevice* onCreateDevice(const CreateInfo&, const SkPaint*) override; |
| |
| sk_sp<SkSurface> makeSurface(const SkImageInfo&, const SkSurfaceProps&) override; |
| |
| SkImageFilterCache* getImageFilterCache() override; |
| |
| bool forceConservativeRasterClip() const override { return true; } |
| |
| GrClipStackClip clip() const { return GrClipStackClip(&this->cs()); } |
| |
| /** |
| * 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 shouldTileImageID(uint32_t imageID, const SkIRect& imageRect, |
| const SkMatrix& viewMatrix, |
| const SkMatrix& srcToDstRectMatrix, |
| const GrSamplerParams& params, |
| const SkRect* srcRectPtr, |
| int maxTileSize, |
| int* tileSize, |
| SkIRect* clippedSubset) const; |
| // Just returns the predicate, not the out-tileSize or out-clippedSubset, as they are not |
| // needed at the moment. |
| bool shouldTileImage(const SkImage* image, const SkRect* srcRectPtr, |
| SkCanvas::SrcRectConstraint constraint, SkFilterQuality quality, |
| const SkMatrix& viewMatrix, const SkMatrix& srcToDstRect) const; |
| |
| sk_sp<SkSpecialImage> filterTexture(SkSpecialImage*, |
| int left, int top, |
| SkIPoint* offset, |
| const SkImageFilter* filter); |
| |
| // Splits bitmap into tiles of tileSize and draws them using separate textures for each tile. |
| void drawTiledBitmap(const SkBitmap& bitmap, |
| const SkMatrix& viewMatrix, |
| const SkMatrix& srcToDstMatrix, |
| const SkRect& srcRect, |
| const SkIRect& clippedSrcRect, |
| const GrSamplerParams& params, |
| const SkPaint& paint, |
| SkCanvas::SrcRectConstraint, |
| int tileSize, |
| bool bicubic); |
| |
| // Used by drawTiledBitmap to draw each tile. |
| void drawBitmapTile(const SkBitmap&, |
| const SkMatrix& viewMatrix, |
| const SkRect& dstRect, |
| const SkRect& srcRect, |
| const GrSamplerParams& params, |
| const SkPaint& paint, |
| SkCanvas::SrcRectConstraint, |
| bool bicubic, |
| bool needsTextureDomain); |
| |
| void drawTextureProducer(GrTextureProducer*, |
| const SkRect* srcRect, |
| const SkRect* dstRect, |
| SkCanvas::SrcRectConstraint, |
| const SkMatrix& viewMatrix, |
| const GrClip&, |
| const SkPaint&); |
| |
| void drawTextureProducerImpl(GrTextureProducer*, |
| const SkRect& clippedSrcRect, |
| const SkRect& clippedDstRect, |
| SkCanvas::SrcRectConstraint, |
| const SkMatrix& viewMatrix, |
| const SkMatrix& srcToDstMatrix, |
| const GrClip&, |
| const SkPaint&); |
| |
| bool drawFilledDRRect(const SkMatrix& viewMatrix, const SkRRect& outer, |
| const SkRRect& inner, const SkPaint& paint); |
| |
| void drawProducerNine(GrTextureProducer*, const SkIRect& center, |
| const SkRect& dst, const SkPaint&); |
| |
| void drawProducerLattice(GrTextureProducer*, const SkCanvas::Lattice& lattice, |
| const SkRect& dst, const SkPaint&); |
| |
| bool drawDashLine(const SkPoint pts[2], const SkPaint& paint); |
| void drawStrokedLine(const SkPoint pts[2], const SkPaint&); |
| |
| void wireframeVertices(SkVertices::VertexMode, int vertexCount, const SkPoint verts[], |
| SkBlendMode, const uint16_t indices[], int indexCount, const SkPaint&); |
| |
| static sk_sp<GrRenderTargetContext> MakeRenderTargetContext(GrContext*, |
| SkBudgeted, |
| const SkImageInfo&, |
| int sampleCount, |
| GrSurfaceOrigin, |
| const SkSurfaceProps*); |
| |
| friend class GrAtlasTextContext; |
| friend class SkSurface_Gpu; // for access to surfaceProps |
| typedef SkClipStackDevice INHERITED; |
| }; |
| |
| #endif |