| /* | |
| * Copyright 2016 Google Inc. | |
| * | |
| * Use of this source code is governed by a BSD-style license that can be | |
| * found in the LICENSE file | |
| */ | |
| #include "src/core/SkSpecialImage.h" | |
| #include "include/core/SkBitmap.h" | |
| #include "include/core/SkCanvas.h" | |
| #include "include/core/SkImage.h" | |
| #include "src/core/SkSpecialSurface.h" | |
| #include "src/core/SkSurfacePriv.h" | |
| #include "src/image/SkImage_Base.h" | |
| #if SK_SUPPORT_GPU | |
| #include "include/gpu/GrDirectContext.h" | |
| #include "include/gpu/GrRecordingContext.h" | |
| #include "src/gpu/GrImageInfo.h" | |
| #include "src/gpu/GrProxyProvider.h" | |
| #include "src/gpu/GrRecordingContextPriv.h" | |
| #include "src/gpu/GrTextureProxy.h" | |
| #include "src/image/SkImage_Gpu.h" | |
| #endif | |
| // Currently the raster imagefilters can only handle certain imageinfos. Call this to know if | |
| // a given info is supported. | |
| static bool valid_for_imagefilters(const SkImageInfo& info) { | |
| // no support for other swizzles/depths yet | |
| return info.colorType() == kN32_SkColorType; | |
| } | |
| /////////////////////////////////////////////////////////////////////////////// | |
| class SkSpecialImage_Base : public SkSpecialImage { | |
| public: | |
| SkSpecialImage_Base(const SkIRect& subset, uint32_t uniqueID, const SkSurfaceProps& props) | |
| : INHERITED(subset, uniqueID, props) { | |
| } | |
| ~SkSpecialImage_Base() override { } | |
| virtual void onDraw(SkCanvas*, SkScalar x, SkScalar y, const SkSamplingOptions&, | |
| const SkPaint*) const = 0; | |
| virtual bool onGetROPixels(SkBitmap*) const = 0; | |
| virtual GrRecordingContext* onGetContext() const { return nullptr; } | |
| virtual SkColorSpace* onGetColorSpace() const = 0; | |
| #if SK_SUPPORT_GPU | |
| virtual GrSurfaceProxyView onView(GrRecordingContext* context) const = 0; | |
| #endif | |
| // This subset is relative to the backing store's coordinate frame, it has already been mapped | |
| // from the content rect by the non-virtual makeSubset(). | |
| virtual sk_sp<SkSpecialImage> onMakeSubset(const SkIRect& subset) const = 0; | |
| virtual sk_sp<SkSpecialSurface> onMakeSurface( | |
| SkColorType colorType, const SkColorSpace* colorSpace, const SkISize& size, | |
| SkAlphaType at, const SkSurfaceProps&) const = 0; | |
| // This subset (when not null) is relative to the backing store's coordinate frame, it has | |
| // already been mapped from the content rect by the non-virtual asImage(). | |
| virtual sk_sp<SkImage> onAsImage(const SkIRect* subset) const = 0; | |
| virtual sk_sp<SkSurface> onMakeTightSurface( | |
| SkColorType colorType, const SkColorSpace* colorSpace, | |
| const SkISize& size, SkAlphaType at) const = 0; | |
| private: | |
| using INHERITED = SkSpecialImage; | |
| }; | |
| /////////////////////////////////////////////////////////////////////////////// | |
| static inline const SkSpecialImage_Base* as_SIB(const SkSpecialImage* image) { | |
| return static_cast<const SkSpecialImage_Base*>(image); | |
| } | |
| SkSpecialImage::SkSpecialImage(const SkIRect& subset, | |
| uint32_t uniqueID, | |
| const SkSurfaceProps& props) | |
| : fProps(props) | |
| , fSubset(subset) | |
| , fUniqueID(kNeedNewImageUniqueID_SpecialImage == uniqueID ? SkNextID::ImageID() : uniqueID) { | |
| } | |
| void SkSpecialImage::draw(SkCanvas* canvas, SkScalar x, SkScalar y, | |
| const SkSamplingOptions& sampling, const SkPaint* paint) const { | |
| return as_SIB(this)->onDraw(canvas, x, y, sampling, paint); | |
| } | |
| bool SkSpecialImage::getROPixels(SkBitmap* bm) const { | |
| return as_SIB(this)->onGetROPixels(bm); | |
| } | |
| bool SkSpecialImage::isTextureBacked() const { | |
| return SkToBool(as_SIB(this)->onGetContext()); | |
| } | |
| GrRecordingContext* SkSpecialImage::getContext() const { | |
| return as_SIB(this)->onGetContext(); | |
| } | |
| SkColorSpace* SkSpecialImage::getColorSpace() const { | |
| return as_SIB(this)->onGetColorSpace(); | |
| } | |
| #if SK_SUPPORT_GPU | |
| GrSurfaceProxyView SkSpecialImage::view(GrRecordingContext* context) const { | |
| return as_SIB(this)->onView(context); | |
| } | |
| #endif | |
| sk_sp<SkSpecialSurface> SkSpecialImage::makeSurface( | |
| SkColorType colorType, const SkColorSpace* colorSpace, const SkISize& size, | |
| SkAlphaType at, const SkSurfaceProps& props) const { | |
| return as_SIB(this)->onMakeSurface(colorType, colorSpace, size, at, props); | |
| } | |
| sk_sp<SkSurface> SkSpecialImage::makeTightSurface( | |
| SkColorType colorType, const SkColorSpace* colorSpace, const SkISize& size, | |
| SkAlphaType at) const { | |
| return as_SIB(this)->onMakeTightSurface(colorType, colorSpace, size, at); | |
| } | |
| sk_sp<SkSpecialImage> SkSpecialImage::makeSubset(const SkIRect& subset) const { | |
| SkIRect absolute = subset.makeOffset(this->subset().topLeft()); | |
| return as_SIB(this)->onMakeSubset(absolute); | |
| } | |
| sk_sp<SkImage> SkSpecialImage::asImage(const SkIRect* subset) const { | |
| if (subset) { | |
| SkIRect absolute = subset->makeOffset(this->subset().topLeft()); | |
| return as_SIB(this)->onAsImage(&absolute); | |
| } else { | |
| return as_SIB(this)->onAsImage(nullptr); | |
| } | |
| } | |
| #if defined(SK_DEBUG) || SK_SUPPORT_GPU | |
| static bool rect_fits(const SkIRect& rect, int width, int height) { | |
| if (0 == width && 0 == height) { | |
| SkASSERT(0 == rect.fLeft && 0 == rect.fRight && 0 == rect.fTop && 0 == rect.fBottom); | |
| return true; | |
| } | |
| return rect.fLeft >= 0 && rect.fLeft < width && rect.fLeft < rect.fRight && | |
| rect.fRight >= 0 && rect.fRight <= width && | |
| rect.fTop >= 0 && rect.fTop < height && rect.fTop < rect.fBottom && | |
| rect.fBottom >= 0 && rect.fBottom <= height; | |
| } | |
| #endif | |
| sk_sp<SkSpecialImage> SkSpecialImage::MakeFromImage(GrRecordingContext* rContext, | |
| const SkIRect& subset, | |
| sk_sp<SkImage> image, | |
| const SkSurfaceProps& props) { | |
| SkASSERT(rect_fits(subset, image->width(), image->height())); | |
| #if SK_SUPPORT_GPU | |
| if (rContext) { | |
| auto [view, ct] = as_IB(image)->asView(rContext, GrMipmapped::kNo); | |
| return MakeDeferredFromGpu(rContext, | |
| subset, | |
| image->uniqueID(), | |
| std::move(view), | |
| ct, | |
| image->refColorSpace(), | |
| props); | |
| } | |
| #endif | |
| // raster to gpu is supported here, but gpu to raster is not | |
| SkBitmap bm; | |
| if (as_IB(image)->getROPixels(nullptr, &bm)) { | |
| return MakeFromRaster(subset, bm, props); | |
| } | |
| return nullptr; | |
| } | |
| /////////////////////////////////////////////////////////////////////////////// | |
| class SkSpecialImage_Raster : public SkSpecialImage_Base { | |
| public: | |
| SkSpecialImage_Raster(const SkIRect& subset, const SkBitmap& bm, const SkSurfaceProps& props) | |
| : INHERITED(subset, bm.getGenerationID(), props) | |
| , fBitmap(bm) | |
| { | |
| SkASSERT(bm.pixelRef()); | |
| SkASSERT(fBitmap.getPixels()); | |
| } | |
| SkAlphaType alphaType() const override { return fBitmap.alphaType(); } | |
| SkColorType colorType() const override { return fBitmap.colorType(); } | |
| size_t getSize() const override { return fBitmap.computeByteSize(); } | |
| void onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, const SkSamplingOptions& sampling, | |
| const SkPaint* paint) const override { | |
| SkRect dst = SkRect::MakeXYWH(x, y, | |
| this->subset().width(), this->subset().height()); | |
| canvas->drawImageRect(fBitmap.asImage(), SkRect::Make(this->subset()), dst, | |
| sampling, paint, SkCanvas::kStrict_SrcRectConstraint); | |
| } | |
| bool onGetROPixels(SkBitmap* bm) const override { | |
| return fBitmap.extractSubset(bm, this->subset()); | |
| } | |
| SkColorSpace* onGetColorSpace() const override { | |
| return fBitmap.colorSpace(); | |
| } | |
| #if SK_SUPPORT_GPU | |
| GrSurfaceProxyView onView(GrRecordingContext* context) const override { | |
| if (context) { | |
| return std::get<0>(GrMakeCachedBitmapProxyView(context, fBitmap, GrMipmapped::kNo)); | |
| } | |
| return {}; | |
| } | |
| #endif | |
| sk_sp<SkSpecialSurface> onMakeSurface(SkColorType colorType, const SkColorSpace* colorSpace, | |
| const SkISize& size, SkAlphaType at, | |
| const SkSurfaceProps& props) const override { | |
| // Ignore the requested color type, the raster backend currently only supports N32 | |
| colorType = kN32_SkColorType; // TODO: find ways to allow f16 | |
| SkImageInfo info = SkImageInfo::Make(size, colorType, at, sk_ref_sp(colorSpace)); | |
| return SkSpecialSurface::MakeRaster(info, props); | |
| } | |
| sk_sp<SkSpecialImage> onMakeSubset(const SkIRect& subset) const override { | |
| // No need to extract subset, onGetROPixels handles that when needed | |
| return SkSpecialImage::MakeFromRaster(subset, fBitmap, this->props()); | |
| } | |
| sk_sp<SkImage> onAsImage(const SkIRect* subset) const override { | |
| if (subset) { | |
| SkBitmap subsetBM; | |
| if (!fBitmap.extractSubset(&subsetBM, *subset)) { | |
| return nullptr; | |
| } | |
| return subsetBM.asImage(); | |
| } | |
| return fBitmap.asImage(); | |
| } | |
| sk_sp<SkSurface> onMakeTightSurface(SkColorType colorType, const SkColorSpace* colorSpace, | |
| const SkISize& size, SkAlphaType at) const override { | |
| // Ignore the requested color type, the raster backend currently only supports N32 | |
| colorType = kN32_SkColorType; // TODO: find ways to allow f16 | |
| SkImageInfo info = SkImageInfo::Make(size, colorType, at, sk_ref_sp(colorSpace)); | |
| return SkSurface::MakeRaster(info); | |
| } | |
| private: | |
| SkBitmap fBitmap; | |
| using INHERITED = SkSpecialImage_Base; | |
| }; | |
| sk_sp<SkSpecialImage> SkSpecialImage::MakeFromRaster(const SkIRect& subset, | |
| const SkBitmap& bm, | |
| const SkSurfaceProps& props) { | |
| SkASSERT(rect_fits(subset, bm.width(), bm.height())); | |
| if (!bm.pixelRef()) { | |
| return nullptr; | |
| } | |
| const SkBitmap* srcBM = &bm; | |
| SkBitmap tmp; | |
| // ImageFilters only handle N32 at the moment, so force our src to be that | |
| if (!valid_for_imagefilters(bm.info())) { | |
| if (!tmp.tryAllocPixels(bm.info().makeColorType(kN32_SkColorType)) || | |
| !bm.readPixels(tmp.info(), tmp.getPixels(), tmp.rowBytes(), 0, 0)) | |
| { | |
| return nullptr; | |
| } | |
| srcBM = &tmp; | |
| } | |
| return sk_make_sp<SkSpecialImage_Raster>(subset, *srcBM, props); | |
| } | |
| sk_sp<SkSpecialImage> SkSpecialImage::CopyFromRaster(const SkIRect& subset, | |
| const SkBitmap& bm, | |
| const SkSurfaceProps& props) { | |
| SkASSERT(rect_fits(subset, bm.width(), bm.height())); | |
| if (!bm.pixelRef()) { | |
| return nullptr; | |
| } | |
| SkBitmap tmp; | |
| SkImageInfo info = bm.info().makeDimensions(subset.size()); | |
| // As in MakeFromRaster, must force src to N32 for ImageFilters | |
| if (!valid_for_imagefilters(bm.info())) { | |
| info = info.makeColorType(kN32_SkColorType); | |
| } | |
| if (!tmp.tryAllocPixels(info)) { | |
| return nullptr; | |
| } | |
| if (!bm.readPixels(tmp.info(), tmp.getPixels(), tmp.rowBytes(), subset.x(), subset.y())) { | |
| return nullptr; | |
| } | |
| // Since we're making a copy of the raster, the resulting special image is the exact size | |
| // of the requested subset of the original and no longer needs to be offset by subset's left | |
| // and top, since those were relative to the original's buffer. | |
| return sk_make_sp<SkSpecialImage_Raster>( | |
| SkIRect::MakeWH(subset.width(), subset.height()), tmp, props); | |
| } | |
| #if SK_SUPPORT_GPU | |
| /////////////////////////////////////////////////////////////////////////////// | |
| static sk_sp<SkImage> wrap_proxy_in_image(GrRecordingContext* context, GrSurfaceProxyView view, | |
| SkColorType colorType, SkAlphaType alphaType, | |
| sk_sp<SkColorSpace> colorSpace) { | |
| return sk_make_sp<SkImage_Gpu>(sk_ref_sp(context), | |
| kNeedNewImageUniqueID, | |
| std::move(view), | |
| SkColorInfo(colorType, alphaType, std::move(colorSpace))); | |
| } | |
| class SkSpecialImage_Gpu : public SkSpecialImage_Base { | |
| public: | |
| SkSpecialImage_Gpu(GrRecordingContext* context, const SkIRect& subset, | |
| uint32_t uniqueID, GrSurfaceProxyView view, GrColorType ct, | |
| SkAlphaType at, sk_sp<SkColorSpace> colorSpace, const SkSurfaceProps& props) | |
| : INHERITED(subset, uniqueID, props) | |
| , fContext(context) | |
| , fView(std::move(view)) | |
| , fColorType(ct) | |
| , fAlphaType(at) | |
| , fColorSpace(std::move(colorSpace)) { | |
| } | |
| SkAlphaType alphaType() const override { return fAlphaType; } | |
| SkColorType colorType() const override { return GrColorTypeToSkColorType(fColorType); } | |
| size_t getSize() const override { | |
| return fView.proxy()->gpuMemorySize(); | |
| } | |
| void onDraw(SkCanvas* canvas, SkScalar x, SkScalar y, const SkSamplingOptions& sampling, | |
| const SkPaint* paint) const override { | |
| SkRect dst = SkRect::MakeXYWH(x, y, | |
| this->subset().width(), this->subset().height()); | |
| // TODO: In this instance we know we're going to draw a sub-portion of the backing | |
| // texture into the canvas so it is okay to wrap it in an SkImage. This poses | |
| // some problems for full deferral however in that when the deferred SkImage_Gpu | |
| // instantiates itself it is going to have to either be okay with having a larger | |
| // than expected backing texture (unlikely) or the 'fit' of the SurfaceProxy needs | |
| // to be tightened (if it is deferred). | |
| sk_sp<SkImage> img = sk_sp<SkImage>( | |
| new SkImage_Gpu(sk_ref_sp(canvas->recordingContext()), | |
| this->uniqueID(), | |
| fView, | |
| SkColorInfo(this->colorType(), fAlphaType, fColorSpace))); | |
| canvas->drawImageRect(img, SkRect::Make(this->subset()), dst, | |
| sampling, paint, SkCanvas::kStrict_SrcRectConstraint); | |
| } | |
| GrRecordingContext* onGetContext() const override { return fContext; } | |
| GrSurfaceProxyView onView(GrRecordingContext* context) const override { return fView; } | |
| bool onGetROPixels(SkBitmap* dst) const override { | |
| // This should never be called: All GPU image filters are implemented entirely on the GPU, | |
| // so we never perform read-back. | |
| SkASSERT(false); | |
| return false; | |
| } | |
| SkColorSpace* onGetColorSpace() const override { | |
| return fColorSpace.get(); | |
| } | |
| sk_sp<SkSpecialSurface> onMakeSurface(SkColorType colorType, const SkColorSpace* colorSpace, | |
| const SkISize& size, SkAlphaType at, | |
| const SkSurfaceProps& props) const override { | |
| if (!fContext) { | |
| return nullptr; | |
| } | |
| SkImageInfo ii = SkImageInfo::Make(size, colorType, at, sk_ref_sp(colorSpace)); | |
| return SkSpecialSurface::MakeRenderTarget(fContext, ii, props); | |
| } | |
| sk_sp<SkSpecialImage> onMakeSubset(const SkIRect& subset) const override { | |
| return SkSpecialImage::MakeDeferredFromGpu(fContext, | |
| subset, | |
| this->uniqueID(), | |
| fView, | |
| fColorType, | |
| fColorSpace, | |
| this->props(), | |
| fAlphaType); | |
| } | |
| sk_sp<SkImage> onAsImage(const SkIRect* subset) const override { | |
| GrSurfaceProxy* proxy = fView.proxy(); | |
| if (subset) { | |
| if (proxy->isFunctionallyExact() && *subset == SkIRect::MakeSize(proxy->dimensions())) { | |
| proxy->priv().exactify(false); | |
| // The existing GrTexture is already tight so reuse it in the SkImage | |
| return wrap_proxy_in_image(fContext, fView, this->colorType(), fAlphaType, | |
| fColorSpace); | |
| } | |
| auto subsetView = GrSurfaceProxyView::Copy(fContext, fView, GrMipmapped::kNo, *subset, | |
| SkBackingFit::kExact, SkBudgeted::kYes); | |
| if (!subsetView) { | |
| return nullptr; | |
| } | |
| SkASSERT(subsetView.asTextureProxy()); | |
| SkASSERT(subsetView.proxy()->priv().isExact()); | |
| // MDB: this is acceptable (wrapping subsetProxy in an SkImage) bc Copy will | |
| // return a kExact-backed proxy | |
| return wrap_proxy_in_image(fContext, std::move(subsetView), this->colorType(), | |
| fAlphaType, fColorSpace); | |
| } | |
| proxy->priv().exactify(true); | |
| return wrap_proxy_in_image(fContext, fView, this->colorType(), fAlphaType, fColorSpace); | |
| } | |
| sk_sp<SkSurface> onMakeTightSurface(SkColorType colorType, const SkColorSpace* colorSpace, | |
| const SkISize& size, SkAlphaType at) const override { | |
| // TODO (michaelludwig): Why does this ignore colorType but onMakeSurface doesn't ignore it? | |
| // Once makeTightSurface() goes away, should this type overriding behavior be moved into | |
| // onMakeSurface() or is this unnecessary? | |
| colorType = colorSpace && colorSpace->gammaIsLinear() | |
| ? kRGBA_F16_SkColorType : kRGBA_8888_SkColorType; | |
| SkImageInfo info = SkImageInfo::Make(size, colorType, at, sk_ref_sp(colorSpace)); | |
| return SkSurface::MakeRenderTarget(fContext, SkBudgeted::kYes, info); | |
| } | |
| private: | |
| GrRecordingContext* fContext; | |
| GrSurfaceProxyView fView; | |
| const GrColorType fColorType; | |
| const SkAlphaType fAlphaType; | |
| sk_sp<SkColorSpace> fColorSpace; | |
| using INHERITED = SkSpecialImage_Base; | |
| }; | |
| sk_sp<SkSpecialImage> SkSpecialImage::MakeDeferredFromGpu(GrRecordingContext* context, | |
| const SkIRect& subset, | |
| uint32_t uniqueID, | |
| GrSurfaceProxyView view, | |
| GrColorType colorType, | |
| sk_sp<SkColorSpace> colorSpace, | |
| const SkSurfaceProps& props, | |
| SkAlphaType at) { | |
| if (!context || context->abandoned() || !view.asTextureProxy()) { | |
| return nullptr; | |
| } | |
| SkASSERT_RELEASE(rect_fits(subset, view.proxy()->width(), view.proxy()->height())); | |
| return sk_make_sp<SkSpecialImage_Gpu>(context, subset, uniqueID, std::move(view), colorType, | |
| at, std::move(colorSpace), props); | |
| } | |
| #endif |