/* * 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 "SkBitmapDevice.h" #include "SkRegion.h" #include "GrContext.h" struct SkDrawProcs; struct GrSkDrawProcs; class GrTextContext; /** * Subclass of SkBitmapDevice, which directs all drawing to the GrGpu owned by the * canvas. */ class SK_API SkGpuDevice : public SkBitmapDevice { public: /** * Creates an SkGpuDevice from a GrSurface. This will fail if the surface is not a render * target. The caller owns a ref on the returned device. */ static SkGpuDevice* Create(GrSurface* surface); /** * New device that will create an offscreen renderTarget based on the * config, width, height, and sampleCount. The device's storage will not * count against the GrContext's texture cache budget. The device's pixels * will be uninitialized. TODO: This can fail, replace with a factory function. */ SkGpuDevice(GrContext*, SkBitmap::Config, int width, int height, int sampleCount = 0); /** * DEPRECATED -- need to make this private, call Create(surface) * New device that will render to the specified renderTarget. */ SkGpuDevice(GrContext*, GrRenderTarget*); /** * DEPRECATED -- need to make this private, call Create(surface) * New device that will render to the texture (as a rendertarget). * The GrTexture's asRenderTarget() must be non-NULL or device will not * function. */ SkGpuDevice(GrContext*, GrTexture*); virtual ~SkGpuDevice(); GrContext* context() const { return fContext; } virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE; // overrides from SkBaseDevice virtual uint32_t getDeviceCapabilities() SK_OVERRIDE { return 0; } virtual int width() const SK_OVERRIDE { return NULL == fRenderTarget ? 0 : fRenderTarget->width(); } virtual int height() const SK_OVERRIDE { return NULL == fRenderTarget ? 0 : fRenderTarget->height(); } virtual bool isOpaque() const SK_OVERRIDE { return NULL == fRenderTarget ? false : kRGB_565_GrPixelConfig == fRenderTarget->config(); } virtual SkBitmap::Config config() const SK_OVERRIDE; virtual void clear(SkColor color) SK_OVERRIDE; virtual void writePixels(const SkBitmap& bitmap, int x, int y, SkCanvas::Config8888 config8888) SK_OVERRIDE; virtual 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 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); 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[], SkScalar constY, int scalarsPerPos, const SkPaint&) SK_OVERRIDE; virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len, const SkPath& path, const SkMatrix* matrix, 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; virtual bool filterTextFlags(const SkPaint&, TextFlags*) SK_OVERRIDE; virtual void flush() SK_OVERRIDE; virtual void onAttachToCanvas(SkCanvas* canvas) SK_OVERRIDE; virtual void onDetachFromCanvas() SK_OVERRIDE; /** * Make's this device's rendertarget current in the underlying 3D API. * Also implicitly flushes. */ virtual void makeRenderTargetCurrent(); virtual bool canHandleImageFilter(SkImageFilter*) SK_OVERRIDE; virtual bool filterImage(SkImageFilter*, const SkBitmap&, const SkMatrix&, SkBitmap*, SkIPoint*) SK_OVERRIDE; class SkAutoCachedTexture; // used internally protected: // overrides from SkBaseDevice virtual bool onReadPixels(const SkBitmap& bitmap, int x, int y, SkCanvas::Config8888 config8888) SK_OVERRIDE; private: GrContext* fContext; GrSkDrawProcs* fDrawProcs; GrClipData fClipData; // state for our render-target GrRenderTarget* fRenderTarget; bool fNeedClear; // called from rt and tex cons void initFromRenderTarget(GrContext*, GrRenderTarget*, bool cached); // used by createCompatibleDevice SkGpuDevice(GrContext*, GrTexture* texture, bool needClear); // override from SkBaseDevice virtual SkBaseDevice* onCreateCompatibleDevice(SkBitmap::Config config, int width, int height, bool isOpaque, Usage usage) SK_OVERRIDE; SkDrawProcs* initDrawForText(GrTextContext*); // sets the render target, clip, and matrix on GrContext. Use forceIdenity to override // SkDraw's matrix and draw in device coords. void prepareDraw(const SkDraw&, bool forceIdentity); /** * Implementation for both drawBitmap and drawBitmapRect. */ void drawBitmapCommon(const SkDraw&, const SkBitmap& bitmap, const SkRect* srcRectPtr, const SkMatrix&, 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 GrTextureParams& sampler, const SkRect* srcRectPtr, int maxTileSize, int* tileSize, SkIRect* clippedSrcRect) const; void internalDrawBitmap(const SkBitmap&, const SkRect&, const GrTextureParams& params, const SkPaint& paint, SkCanvas::DrawBitmapRectFlags flags); void drawTiledBitmap(const SkBitmap& bitmap, const SkRect& srcRect, const SkIRect& clippedSrcRect, const GrTextureParams& params, const SkPaint& paint, SkCanvas::DrawBitmapRectFlags flags, int tileSize); /** * Returns non-initialized instance. */ GrTextContext* getTextContext(); typedef SkBitmapDevice INHERITED; }; #endif