1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/skia/trunk/include/gpu/SkGpuDevice.h Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,230 @@
1.4 +
1.5 +/*
1.6 + * Copyright 2010 Google Inc.
1.7 + *
1.8 + * Use of this source code is governed by a BSD-style license that can be
1.9 + * found in the LICENSE file.
1.10 + */
1.11 +
1.12 +
1.13 +
1.14 +#ifndef SkGpuDevice_DEFINED
1.15 +#define SkGpuDevice_DEFINED
1.16 +
1.17 +#include "SkGr.h"
1.18 +#include "SkBitmap.h"
1.19 +#include "SkBitmapDevice.h"
1.20 +#include "SkPicture.h"
1.21 +#include "SkRegion.h"
1.22 +#include "GrContext.h"
1.23 +
1.24 +struct SkDrawProcs;
1.25 +struct GrSkDrawProcs;
1.26 +
1.27 +class GrTextContext;
1.28 +
1.29 +/**
1.30 + * Subclass of SkBitmapDevice, which directs all drawing to the GrGpu owned by the
1.31 + * canvas.
1.32 + */
1.33 +class SK_API SkGpuDevice : public SkBitmapDevice {
1.34 +public:
1.35 +
1.36 + /**
1.37 + * Creates an SkGpuDevice from a GrSurface. This will fail if the surface is not a render
1.38 + * target. The caller owns a ref on the returned device.
1.39 + */
1.40 + static SkGpuDevice* Create(GrSurface* surface);
1.41 +
1.42 + /**
1.43 + * New device that will create an offscreen renderTarget based on the
1.44 + * ImageInfo and sampleCount. The device's storage will not
1.45 + * count against the GrContext's texture cache budget. The device's pixels
1.46 + * will be uninitialized. On failure, returns NULL.
1.47 + */
1.48 + static SkGpuDevice* Create(GrContext*, const SkImageInfo&, int sampleCount);
1.49 +
1.50 +#ifdef SK_SUPPORT_LEGACY_COMPATIBLEDEVICE_CONFIG
1.51 + /**
1.52 + * New device that will create an offscreen renderTarget based on the
1.53 + * config, width, height, and sampleCount. The device's storage will not
1.54 + * count against the GrContext's texture cache budget. The device's pixels
1.55 + * will be uninitialized. TODO: This can fail, replace with a factory function.
1.56 + */
1.57 + SkGpuDevice(GrContext*, SkBitmap::Config, int width, int height, int sampleCount = 0);
1.58 +#endif
1.59 +
1.60 + /**
1.61 + * DEPRECATED -- need to make this private, call Create(surface)
1.62 + * New device that will render to the specified renderTarget.
1.63 + */
1.64 + SkGpuDevice(GrContext*, GrRenderTarget*);
1.65 +
1.66 + /**
1.67 + * DEPRECATED -- need to make this private, call Create(surface)
1.68 + * New device that will render to the texture (as a rendertarget).
1.69 + * The GrTexture's asRenderTarget() must be non-NULL or device will not
1.70 + * function.
1.71 + */
1.72 + SkGpuDevice(GrContext*, GrTexture*);
1.73 +
1.74 + virtual ~SkGpuDevice();
1.75 +
1.76 + GrContext* context() const { return fContext; }
1.77 +
1.78 + virtual GrRenderTarget* accessRenderTarget() SK_OVERRIDE;
1.79 +
1.80 + // overrides from SkBaseDevice
1.81 + virtual int width() const SK_OVERRIDE {
1.82 + return NULL == fRenderTarget ? 0 : fRenderTarget->width();
1.83 + }
1.84 + virtual int height() const SK_OVERRIDE {
1.85 + return NULL == fRenderTarget ? 0 : fRenderTarget->height();
1.86 + }
1.87 + virtual bool isOpaque() const SK_OVERRIDE {
1.88 + return NULL == fRenderTarget ? false
1.89 + : kRGB_565_GrPixelConfig == fRenderTarget->config();
1.90 + }
1.91 + virtual SkBitmap::Config config() const SK_OVERRIDE;
1.92 +
1.93 + virtual void clear(SkColor color) SK_OVERRIDE;
1.94 +#ifdef SK_SUPPORT_LEGACY_WRITEPIXELSCONFIG
1.95 + virtual void writePixels(const SkBitmap& bitmap, int x, int y,
1.96 + SkCanvas::Config8888 config8888) SK_OVERRIDE;
1.97 +#endif
1.98 + virtual void drawPaint(const SkDraw&, const SkPaint& paint) SK_OVERRIDE;
1.99 + virtual void drawPoints(const SkDraw&, SkCanvas::PointMode mode, size_t count,
1.100 + const SkPoint[], const SkPaint& paint) SK_OVERRIDE;
1.101 + virtual void drawRect(const SkDraw&, const SkRect& r,
1.102 + const SkPaint& paint) SK_OVERRIDE;
1.103 + virtual void drawRRect(const SkDraw&, const SkRRect& r,
1.104 + const SkPaint& paint) SK_OVERRIDE;
1.105 + virtual void drawOval(const SkDraw&, const SkRect& oval,
1.106 + const SkPaint& paint) SK_OVERRIDE;
1.107 + virtual void drawPath(const SkDraw&, const SkPath& path,
1.108 + const SkPaint& paint, const SkMatrix* prePathMatrix,
1.109 + bool pathIsMutable) SK_OVERRIDE;
1.110 + virtual void drawBitmap(const SkDraw&, const SkBitmap& bitmap,
1.111 + const SkMatrix&, const SkPaint&) SK_OVERRIDE;
1.112 + virtual void drawBitmapRect(const SkDraw&, const SkBitmap&,
1.113 + const SkRect* srcOrNull, const SkRect& dst,
1.114 + const SkPaint& paint,
1.115 + SkCanvas::DrawBitmapRectFlags flags) SK_OVERRIDE;
1.116 + virtual void drawSprite(const SkDraw&, const SkBitmap& bitmap,
1.117 + int x, int y, const SkPaint& paint);
1.118 + virtual void drawText(const SkDraw&, const void* text, size_t len,
1.119 + SkScalar x, SkScalar y, const SkPaint&) SK_OVERRIDE;
1.120 + virtual void drawPosText(const SkDraw&, const void* text, size_t len,
1.121 + const SkScalar pos[], SkScalar constY,
1.122 + int scalarsPerPos, const SkPaint&) SK_OVERRIDE;
1.123 + virtual void drawTextOnPath(const SkDraw&, const void* text, size_t len,
1.124 + const SkPath& path, const SkMatrix* matrix,
1.125 + const SkPaint&) SK_OVERRIDE;
1.126 + virtual void drawVertices(const SkDraw&, SkCanvas::VertexMode, int vertexCount,
1.127 + const SkPoint verts[], const SkPoint texs[],
1.128 + const SkColor colors[], SkXfermode* xmode,
1.129 + const uint16_t indices[], int indexCount,
1.130 + const SkPaint&) SK_OVERRIDE;
1.131 + virtual void drawDevice(const SkDraw&, SkBaseDevice*, int x, int y,
1.132 + const SkPaint&) SK_OVERRIDE;
1.133 + virtual bool filterTextFlags(const SkPaint&, TextFlags*) SK_OVERRIDE;
1.134 +
1.135 + virtual void flush() SK_OVERRIDE;
1.136 +
1.137 + virtual void onAttachToCanvas(SkCanvas* canvas) SK_OVERRIDE;
1.138 + virtual void onDetachFromCanvas() SK_OVERRIDE;
1.139 +
1.140 + /**
1.141 + * Make's this device's rendertarget current in the underlying 3D API.
1.142 + * Also implicitly flushes.
1.143 + */
1.144 + virtual void makeRenderTargetCurrent();
1.145 +
1.146 + virtual bool canHandleImageFilter(const SkImageFilter*) SK_OVERRIDE;
1.147 + virtual bool filterImage(const SkImageFilter*, const SkBitmap&,
1.148 + const SkImageFilter::Context&,
1.149 + SkBitmap*, SkIPoint*) SK_OVERRIDE;
1.150 +
1.151 + class SkAutoCachedTexture; // used internally
1.152 +
1.153 +
1.154 +protected:
1.155 + virtual bool onReadPixels(const SkBitmap&, int x, int y, SkCanvas::Config8888) SK_OVERRIDE;
1.156 + virtual bool onWritePixels(const SkImageInfo&, const void*, size_t, int, int) SK_OVERRIDE;
1.157 +
1.158 + /** PRIVATE / EXPERIMENTAL -- do not call */
1.159 + virtual void EXPERIMENTAL_optimize(SkPicture* picture) SK_OVERRIDE;
1.160 + /** PRIVATE / EXPERIMENTAL -- do not call */
1.161 + virtual bool EXPERIMENTAL_drawPicture(const SkPicture& picture) SK_OVERRIDE;
1.162 +
1.163 +private:
1.164 + GrContext* fContext;
1.165 +
1.166 + GrSkDrawProcs* fDrawProcs;
1.167 +
1.168 + GrClipData fClipData;
1.169 +
1.170 + GrTextContext* fMainTextContext;
1.171 + GrTextContext* fFallbackTextContext;
1.172 +
1.173 + // state for our render-target
1.174 + GrRenderTarget* fRenderTarget;
1.175 + bool fNeedClear;
1.176 +
1.177 + // called from rt and tex cons
1.178 + void initFromRenderTarget(GrContext*, GrRenderTarget*, bool cached);
1.179 +
1.180 + // used by createCompatibleDevice
1.181 + SkGpuDevice(GrContext*, GrTexture* texture, bool needClear);
1.182 +
1.183 + virtual SkBaseDevice* onCreateDevice(const SkImageInfo&, Usage) SK_OVERRIDE;
1.184 +
1.185 + virtual SkSurface* newSurface(const SkImageInfo&) SK_OVERRIDE;
1.186 +
1.187 + // sets the render target, clip, and matrix on GrContext. Use forceIdenity to override
1.188 + // SkDraw's matrix and draw in device coords.
1.189 + void prepareDraw(const SkDraw&, bool forceIdentity);
1.190 +
1.191 + /**
1.192 + * Implementation for both drawBitmap and drawBitmapRect.
1.193 + */
1.194 + void drawBitmapCommon(const SkDraw&,
1.195 + const SkBitmap& bitmap,
1.196 + const SkRect* srcRectPtr,
1.197 + const SkSize* dstSizePtr, // ignored iff srcRectPtr == NULL
1.198 + const SkPaint&,
1.199 + SkCanvas::DrawBitmapRectFlags flags);
1.200 +
1.201 + /**
1.202 + * Helper functions called by drawBitmapCommon. By the time these are called the SkDraw's
1.203 + * matrix, clip, and the device's render target has already been set on GrContext.
1.204 + */
1.205 +
1.206 + // The tileSize and clippedSrcRect will be valid only if true is returned.
1.207 + bool shouldTileBitmap(const SkBitmap& bitmap,
1.208 + const GrTextureParams& sampler,
1.209 + const SkRect* srcRectPtr,
1.210 + int maxTileSize,
1.211 + int* tileSize,
1.212 + SkIRect* clippedSrcRect) const;
1.213 + void internalDrawBitmap(const SkBitmap&,
1.214 + const SkRect&,
1.215 + const GrTextureParams& params,
1.216 + const SkPaint& paint,
1.217 + SkCanvas::DrawBitmapRectFlags flags,
1.218 + bool bicubic);
1.219 + void drawTiledBitmap(const SkBitmap& bitmap,
1.220 + const SkRect& srcRect,
1.221 + const SkIRect& clippedSrcRect,
1.222 + const GrTextureParams& params,
1.223 + const SkPaint& paint,
1.224 + SkCanvas::DrawBitmapRectFlags flags,
1.225 + int tileSize,
1.226 + bool bicubic);
1.227 +
1.228 + static SkPicture::AccelData::Key ComputeAccelDataKey();
1.229 +
1.230 + typedef SkBitmapDevice INHERITED;
1.231 +};
1.232 +
1.233 +#endif
