| /* |
| * 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/SkColorSpace.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkSurface.h" |
| #include "include/core/SkTileMode.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/SkBackingFit.h" |
| #include "src/gpu/ganesh/GrImageInfo.h" |
| #include "src/gpu/ganesh/GrProxyProvider.h" |
| #include "src/gpu/ganesh/GrRecordingContextPriv.h" |
| #include "src/gpu/ganesh/GrTextureProxy.h" |
| #include "src/image/SkImage_Gpu.h" |
| #include "src/shaders/SkImageShader.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; |
| } |
| |
| SkSpecialImage::SkSpecialImage(const SkIRect& subset, |
| uint32_t uniqueID, |
| const SkColorInfo& colorInfo, |
| const SkSurfaceProps& props) |
| : fSubset(subset) |
| , fUniqueID(kNeedNewImageUniqueID_SpecialImage == uniqueID ? SkNextID::ImageID() : uniqueID) |
| , fColorInfo(colorInfo) |
| , fProps(props) { |
| } |
| |
| sk_sp<SkSpecialSurface> SkSpecialImage::makeSurface(SkColorType colorType, |
| const SkColorSpace* colorSpace, |
| const SkISize& size, |
| SkAlphaType at, |
| const SkSurfaceProps& props) const { |
| return this->onMakeSurface(colorType, colorSpace, size, at, props); |
| } |
| |
| sk_sp<SkSurface> SkSpecialImage::makeTightSurface(SkColorType colorType, |
| const SkColorSpace* colorSpace, |
| const SkISize& size, |
| SkAlphaType at) const { |
| return this->onMakeTightSurface(colorType, colorSpace, size, at); |
| } |
| |
| sk_sp<SkImage> SkSpecialImage::asImage(const SkIRect* subset) const { |
| if (subset) { |
| SkIRect absolute = subset->makeOffset(this->subset().topLeft()); |
| return this->onAsImage(&absolute); |
| } else { |
| return this->onAsImage(nullptr); |
| } |
| } |
| |
| sk_sp<SkShader> SkSpecialImage::asShader(SkTileMode tileMode, |
| const SkSamplingOptions& sampling, |
| const SkMatrix& lm) const { |
| return this->onAsShader(tileMode, sampling, lm); |
| } |
| |
| sk_sp<SkShader> SkSpecialImage::asShader(const SkSamplingOptions& sampling) const { |
| return this->asShader(sampling, SkMatrix::I()); |
| } |
| |
| sk_sp<SkShader> SkSpecialImage::asShader(const SkSamplingOptions& sampling, |
| const SkMatrix& lm) const { |
| return this->asShader(SkTileMode::kClamp, sampling, lm); |
| } |
| |
| #if SK_GRAPHITE_ENABLED |
| #include "src/gpu/graphite/TextureProxyView.h" |
| |
| bool SkSpecialImage::isGraphiteBacked() const { |
| return SkToBool(this->textureProxyView()); |
| } |
| |
| skgpu::graphite::TextureProxyView SkSpecialImage::textureProxyView() const { |
| return this->onTextureProxyView(); |
| } |
| |
| skgpu::graphite::TextureProxyView SkSpecialImage::onTextureProxyView() const { |
| // To get here we would need to be trying to retrieve a Graphite-backed resource from |
| // either a raster or Ganesh-backed special image. That should never happen. |
| // TODO: re-enable this assert. Right now, since image filters can fallback to raster |
| // in Graphite, we can get here. |
| //SkASSERT(false); |
| return {}; |
| } |
| #endif |
| |
| #ifdef SK_DEBUG |
| bool SkSpecialImage::RectFits(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(RectFits(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, kPremul_SkAlphaType, 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 final : public SkSpecialImage { |
| public: |
| SkSpecialImage_Raster(const SkIRect& subset, const SkBitmap& bm, const SkSurfaceProps& props) |
| : SkSpecialImage(subset, bm.getGenerationID(), bm.info().colorInfo(), props) |
| , fBitmap(bm) { |
| SkASSERT(bm.pixelRef()); |
| SkASSERT(fBitmap.getPixels()); |
| } |
| |
| 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()); |
| } |
| |
| #if SK_SUPPORT_GPU |
| GrSurfaceProxyView onView(GrRecordingContext* context) const override { |
| if (context) { |
| return std::get<0>(GrMakeCachedBitmapProxyView( |
| context, fBitmap, /*label=*/"SpecialImageRaster_OnView", 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<SkShader> onAsShader(SkTileMode tileMode, |
| const SkSamplingOptions& sampling, |
| const SkMatrix& lm) const override { |
| // TODO(skbug.com/12784): SkImage::makeShader() doesn't support a subset yet, but SkBitmap |
| // supports subset views so create the shader from the subset bitmap instead of fBitmap. |
| SkBitmap subsetBM; |
| if (!this->getROPixels(&subsetBM)) { |
| return nullptr; |
| } |
| return subsetBM.asImage()->makeShader(tileMode, tileMode, sampling, lm); |
| } |
| |
| 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; |
| }; |
| |
| sk_sp<SkSpecialImage> SkSpecialImage::MakeFromRaster(const SkIRect& subset, |
| const SkBitmap& bm, |
| const SkSurfaceProps& props) { |
| SkASSERT(RectFits(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(RectFits(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, |
| const SkColorInfo& colorInfo) { |
| |
| return sk_make_sp<SkImage_Gpu>(sk_ref_sp(context), |
| kNeedNewImageUniqueID, |
| std::move(view), |
| colorInfo); |
| } |
| |
| class SkSpecialImage_Gpu final : public SkSpecialImage { |
| public: |
| SkSpecialImage_Gpu(GrRecordingContext* context, |
| const SkIRect& subset, |
| uint32_t uniqueID, |
| GrSurfaceProxyView view, |
| const SkColorInfo& colorInfo, |
| const SkSurfaceProps& props) |
| : SkSpecialImage(subset, uniqueID, colorInfo, props) |
| , fContext(context) |
| , fView(std::move(view)) { |
| } |
| |
| 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, |
| this->colorInfo())); |
| |
| 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; |
| } |
| |
| 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, fView.origin()); |
| } |
| |
| sk_sp<SkSpecialImage> onMakeSubset(const SkIRect& subset) const override { |
| return SkSpecialImage::MakeDeferredFromGpu(fContext, |
| subset, |
| this->uniqueID(), |
| fView, |
| this->colorInfo(), |
| this->props()); |
| } |
| |
| 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->colorInfo()); |
| } |
| |
| auto subsetView = GrSurfaceProxyView::Copy(fContext, |
| fView, |
| GrMipmapped::kNo, |
| *subset, |
| SkBackingFit::kExact, |
| skgpu::Budgeted::kYes, |
| /*label=*/"SkSpecialImage_AsImage"); |
| 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->colorInfo()); |
| } |
| |
| proxy->priv().exactify(true); |
| |
| return wrap_proxy_in_image(fContext, fView, this->colorInfo()); |
| } |
| |
| sk_sp<SkShader> onAsShader(SkTileMode tileMode, |
| const SkSamplingOptions& sampling, |
| const SkMatrix& lm) const override { |
| // The special image's logical (0,0) is at its subset's topLeft() so we need to account for |
| // that in the local matrix used when sampling. |
| SkMatrix subsetOrigin = SkMatrix::Translate(-this->subset().topLeft()); |
| subsetOrigin.postConcat(lm); |
| // However, we don't need to modify the subset itself since that is defined with respect to |
| // the base image, and the local matrix is applied before any tiling/clamping. |
| const SkRect subset = SkRect::Make(this->subset()); |
| |
| // asImage() w/o a subset makes no copy; create the SkImageShader directly to remember the |
| // subset used to access the image. |
| return SkImageShader::MakeSubset( |
| this->asImage(), subset, tileMode, tileMode, sampling, &subsetOrigin); |
| } |
| |
| 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, skgpu::Budgeted::kYes, info, 0, fView.origin(), nullptr); |
| } |
| |
| private: |
| GrRecordingContext* fContext; |
| GrSurfaceProxyView fView; |
| }; |
| |
| sk_sp<SkSpecialImage> SkSpecialImage::MakeDeferredFromGpu(GrRecordingContext* context, |
| const SkIRect& subset, |
| uint32_t uniqueID, |
| GrSurfaceProxyView view, |
| const GrColorInfo& colorInfo, |
| const SkSurfaceProps& props) { |
| if (!context || context->abandoned() || !view.asTextureProxy()) { |
| return nullptr; |
| } |
| |
| SkColorType ct = GrColorTypeToSkColorType(colorInfo.colorType()); |
| |
| SkASSERT(RectFits(subset, view.proxy()->width(), view.proxy()->height())); |
| return sk_make_sp<SkSpecialImage_Gpu>(context, subset, uniqueID, std::move(view), |
| SkColorInfo(ct, |
| colorInfo.alphaType(), |
| colorInfo.refColorSpace()), |
| props); |
| } |
| #endif |
