diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/include/gpu/SkGpuDevice.h --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gfx/skia/trunk/include/gpu/SkGpuDevice.h Wed Dec 31 06:09:35 2014 +0100 @@ -0,0 +1,230 @@ + +/* + * 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 "SkPicture.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 + * ImageInfo and sampleCount. The device's storage will not + * count against the GrContext's texture cache budget. The device's pixels + * will be uninitialized. On failure, returns NULL. + */ + static SkGpuDevice* Create(GrContext*, const SkImageInfo&, int sampleCount); + +#ifdef SK_SUPPORT_LEGACY_COMPATIBLEDEVICE_CONFIG + /** + * 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); +#endif + + /** + * 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 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; +#ifdef SK_SUPPORT_LEGACY_WRITEPIXELSCONFIG + virtual void writePixels(const SkBitmap& bitmap, int x, int y, + SkCanvas::Config8888 config8888) SK_OVERRIDE; +#endif + 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(const SkImageFilter*) SK_OVERRIDE; + virtual bool filterImage(const SkImageFilter*, const SkBitmap&, + const SkImageFilter::Context&, + SkBitmap*, SkIPoint*) SK_OVERRIDE; + + class SkAutoCachedTexture; // used internally + + +protected: + virtual bool onReadPixels(const SkBitmap&, int x, int y, SkCanvas::Config8888) SK_OVERRIDE; + virtual bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) SK_OVERRIDE; + + /** PRIVATE / EXPERIMENTAL -- do not call */ + virtual void EXPERIMENTAL_optimize(SkPicture* picture) SK_OVERRIDE; + /** PRIVATE / EXPERIMENTAL -- do not call */ + virtual bool EXPERIMENTAL_drawPicture(const SkPicture& picture) SK_OVERRIDE; + +private: + GrContext* fContext; + + GrSkDrawProcs* fDrawProcs; + + GrClipData fClipData; + + GrTextContext* fMainTextContext; + GrTextContext* fFallbackTextContext; + + // 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); + + virtual SkBaseDevice* onCreateDevice(const SkImageInfo&, Usage) SK_OVERRIDE; + + virtual SkSurface* newSurface(const SkImageInfo&) SK_OVERRIDE; + + // 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 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 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, + bool bicubic); + void drawTiledBitmap(const SkBitmap& bitmap, + const SkRect& srcRect, + const SkIRect& clippedSrcRect, + const GrTextureParams& params, + const SkPaint& paint, + SkCanvas::DrawBitmapRectFlags flags, + int tileSize, + bool bicubic); + + static SkPicture::AccelData::Key ComputeAccelDataKey(); + + typedef SkBitmapDevice INHERITED; +}; + +#endif