| /* |
| * Copyright 2016 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef GrSurfaceContext_DEFINED |
| #define GrSurfaceContext_DEFINED |
| |
| #include "include/core/SkFilterQuality.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkSurface.h" |
| #include "src/gpu/GrClientMappedBufferManager.h" |
| #include "src/gpu/GrColorInfo.h" |
| #include "src/gpu/GrDataUtils.h" |
| #include "src/gpu/GrImageInfo.h" |
| #include "src/gpu/GrSurfaceProxy.h" |
| #include "src/gpu/GrSurfaceProxyView.h" |
| |
| class GrAuditTrail; |
| class GrDrawingManager; |
| class GrRecordingContext; |
| class GrRenderTargetContext; |
| class GrRenderTargetProxy; |
| class GrSingleOwner; |
| class GrSurface; |
| class GrSurfaceContextPriv; |
| class GrSurfaceProxy; |
| class GrTextureProxy; |
| struct SkIPoint; |
| struct SkIRect; |
| |
| /** |
| * A helper object to orchestrate commands for a particular surface |
| */ |
| class GrSurfaceContext { |
| public: |
| // If the passed in GrSurfaceProxy is renderable this will return a GrRenderTargetContext, |
| // otherwise it will return a GrSurfaceContext. |
| static std::unique_ptr<GrSurfaceContext> Make(GrRecordingContext*, |
| GrSurfaceProxyView readView, |
| GrColorType, SkAlphaType, sk_sp<SkColorSpace>); |
| |
| static std::unique_ptr<GrSurfaceContext> Make(GrRecordingContext*, SkISize dimensions, |
| const GrBackendFormat&, GrRenderable, |
| int renderTargetSampleCnt, GrMipmapped, |
| GrProtected, GrSurfaceOrigin, GrColorType, |
| SkAlphaType, sk_sp<SkColorSpace>, SkBackingFit, |
| SkBudgeted); |
| |
| // If it is known that the GrSurfaceProxy is not renderable, you can directly call the the ctor |
| // here to make a GrSurfaceContext on the stack. |
| GrSurfaceContext(GrRecordingContext*, GrSurfaceProxyView readView, GrColorType, SkAlphaType, |
| sk_sp<SkColorSpace>); |
| |
| virtual ~GrSurfaceContext() = default; |
| |
| const GrColorInfo& colorInfo() const { return fColorInfo; } |
| GrImageInfo imageInfo() const { return {fColorInfo, fReadView.proxy()->dimensions()}; } |
| |
| GrSurfaceOrigin origin() const { return fReadView.origin(); } |
| GrSwizzle readSwizzle() const { return fReadView.swizzle(); } |
| // TODO: See if it makes sense for this to return a const& instead and require the callers to |
| // make a copy (which refs the proxy) if needed. |
| GrSurfaceProxyView readSurfaceView() { return fReadView; } |
| |
| SkISize dimensions() const { return fReadView.dimensions(); } |
| int width() const { return fReadView.proxy()->width(); } |
| int height() const { return fReadView.proxy()->height(); } |
| |
| const GrCaps* caps() const; |
| |
| /** |
| * Reads a rectangle of pixels from the render target context. |
| * @param dstInfo image info for the destination |
| * @param dst destination pixels for the read |
| * @param rowBytes bytes in a row of 'dst' |
| * @param srcPt offset w/in the surface context from which to read |
| * @param direct The direct context to use. If null will use our GrRecordingContext if it |
| * is a GrDirectContext and fail otherwise. |
| */ |
| bool readPixels(const GrImageInfo& dstInfo, void* dst, size_t rowBytes, SkIPoint srcPt, |
| GrDirectContext* direct = nullptr); |
| |
| using ReadPixelsCallback = SkImage::ReadPixelsCallback; |
| using ReadPixelsContext = SkImage::ReadPixelsContext; |
| using RescaleGamma = SkImage::RescaleGamma; |
| |
| // GPU implementation for SkImage:: and SkSurface::asyncRescaleAndReadPixels. |
| void asyncRescaleAndReadPixels(const SkImageInfo& info, |
| const SkIRect& srcRect, |
| RescaleGamma rescaleGamma, |
| SkFilterQuality rescaleQuality, |
| ReadPixelsCallback callback, |
| ReadPixelsContext context); |
| |
| // GPU implementation for SkImage:: and SkSurface::asyncRescaleAndReadPixelsYUV420. |
| void asyncRescaleAndReadPixelsYUV420(SkYUVColorSpace yuvColorSpace, |
| sk_sp<SkColorSpace> dstColorSpace, |
| const SkIRect& srcRect, |
| SkISize dstSize, |
| RescaleGamma rescaleGamma, |
| SkFilterQuality rescaleQuality, |
| ReadPixelsCallback callback, |
| ReadPixelsContext context); |
| |
| /** |
| * Writes a rectangle of pixels [srcInfo, srcBuffer, srcRowbytes] into the |
| * renderTargetContext at the specified position. |
| * @param srcInfo image info for the source pixels |
| * @param src source for the write |
| * @param rowBytes bytes in a row of 'src' |
| * @param dstPt offset w/in the surface context at which to write |
| * @param direct The direct context to use. If null will use our GrRecordingContext if it |
| * is a GrDirectContext and fail otherwise. |
| */ |
| bool writePixels(const GrImageInfo& srcInfo, const void* src, size_t rowBytes, SkIPoint dstPt, |
| GrDirectContext* direct = nullptr); |
| |
| GrSurfaceProxy* asSurfaceProxy() { return fReadView.proxy(); } |
| const GrSurfaceProxy* asSurfaceProxy() const { return fReadView.proxy(); } |
| sk_sp<GrSurfaceProxy> asSurfaceProxyRef() { return fReadView.refProxy(); } |
| |
| GrTextureProxy* asTextureProxy() { return fReadView.asTextureProxy(); } |
| const GrTextureProxy* asTextureProxy() const { return fReadView.asTextureProxy(); } |
| sk_sp<GrTextureProxy> asTextureProxyRef() { return fReadView.asTextureProxyRef(); } |
| |
| GrRenderTargetProxy* asRenderTargetProxy() { return fReadView.asRenderTargetProxy(); } |
| const GrRenderTargetProxy* asRenderTargetProxy() const { |
| return fReadView.asRenderTargetProxy(); |
| } |
| sk_sp<GrRenderTargetProxy> asRenderTargetProxyRef() { |
| return fReadView.asRenderTargetProxyRef(); |
| } |
| |
| virtual GrRenderTargetContext* asRenderTargetContext() { return nullptr; } |
| |
| /** |
| * Rescales the contents of srcRect. The gamma in which the rescaling occurs is controlled by |
| * RescaleGamma. It is always in the original gamut. The result is converted to the color type |
| * and color space of info after rescaling. Note: this currently requires that the info have a |
| * different size than srcRect. Though, it could be relaxed to allow non-scaling color |
| * conversions. |
| */ |
| std::unique_ptr<GrRenderTargetContext> rescale(const GrImageInfo& info, |
| GrSurfaceOrigin, |
| SkIRect srcRect, |
| SkImage::RescaleGamma, |
| SkFilterQuality); |
| |
| /** |
| * After this returns any pending surface IO will be issued to the backend 3D API and |
| * if the surface has MSAA it will be resolved. |
| */ |
| GrSemaphoresSubmitted flush(SkSurface::BackendSurfaceAccess access, |
| const GrFlushInfo&, |
| const GrBackendSurfaceMutableState*); |
| |
| GrAuditTrail* auditTrail(); |
| |
| // Provides access to functions that aren't part of the public API. |
| GrSurfaceContextPriv surfPriv(); |
| const GrSurfaceContextPriv surfPriv() const; // NOLINT(readability-const-return-type) |
| |
| #if GR_TEST_UTILS |
| bool testCopy(GrSurfaceProxy* src, const SkIRect& srcRect, const SkIPoint& dstPoint) { |
| return this->copy(src, srcRect, dstPoint); |
| } |
| |
| bool testCopy(GrSurfaceProxy* src) { |
| return this->copy(src, SkIRect::MakeSize(src->dimensions()), {0, 0}); |
| } |
| #endif |
| |
| protected: |
| friend class GrSurfaceContextPriv; |
| |
| GrDrawingManager* drawingManager(); |
| const GrDrawingManager* drawingManager() const; |
| |
| SkDEBUGCODE(void validate() const;) |
| |
| SkDEBUGCODE(GrSingleOwner* singleOwner();) |
| |
| GrRecordingContext* fContext; |
| |
| GrSurfaceProxyView fReadView; |
| |
| // Inserts a transfer, part of the implementation of asyncReadPixels and |
| // asyncRescaleAndReadPixelsYUV420(). |
| struct PixelTransferResult { |
| using ConversionFn = void(void* dst, const void* mappedBuffer); |
| // If null then the transfer could not be performed. Otherwise this buffer will contain |
| // the pixel data when the transfer is complete. |
| sk_sp<GrGpuBuffer> fTransferBuffer; |
| // If this is null then the transfer buffer will contain the data in the requested |
| // color type. Otherwise, when the transfer is done this must be called to convert |
| // from the transfer buffer's color type to the requested color type. |
| std::function<ConversionFn> fPixelConverter; |
| }; |
| PixelTransferResult transferPixels(GrColorType colorType, const SkIRect& rect); |
| |
| // The async read step of asyncRescaleAndReadPixels() |
| void asyncReadPixels(const SkIRect& rect, |
| SkColorType colorType, |
| ReadPixelsCallback callback, |
| ReadPixelsContext context); |
| |
| private: |
| friend class GrSurfaceProxy; // for copy |
| |
| SkDEBUGCODE(virtual void onValidate() const {}) |
| |
| /** |
| * Copy 'src' into the proxy backing this context. This call will not do any draw fallback. |
| * Currently only writePixels and replaceRenderTarget call this directly. All other copies |
| * should go through GrSurfaceProxy::Copy. |
| * @param src src of pixels |
| * @param dstPoint the origin of the 'srcRect' in the destination coordinate space |
| * @return true if the copy succeeded; false otherwise |
| * |
| * Note: Notionally, 'srcRect' is clipped to 'src's extent with 'dstPoint' being adjusted. |
| * Then the 'srcRect' offset by 'dstPoint' is clipped against the dst's extent. |
| * The end result is only valid src pixels and dst pixels will be touched but the copied |
| * regions will not be shifted. The 'src' must have the same origin as the backing proxy |
| * of fSurfaceContext. |
| */ |
| bool copy(GrSurfaceProxy* src, const SkIRect& srcRect, const SkIPoint& dstPoint); |
| |
| class AsyncReadResult; |
| |
| GrColorInfo fColorInfo; |
| |
| typedef SkRefCnt INHERITED; |
| }; |
| |
| #endif |