| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm/gm.h" |
| #include "include/core/SkBitmap.h" |
| #include "include/core/SkCanvas.h" |
| #include "include/core/SkColor.h" |
| #include "include/core/SkColorSpace.h" |
| #include "include/core/SkImage.h" |
| #include "include/core/SkImageGenerator.h" |
| #include "include/core/SkImageInfo.h" |
| #include "include/core/SkMatrix.h" |
| #include "include/core/SkPaint.h" |
| #include "include/core/SkPicture.h" |
| #include "include/core/SkPictureRecorder.h" |
| #include "include/core/SkPoint.h" |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkScalar.h" |
| #include "include/core/SkSize.h" |
| #include "include/core/SkString.h" |
| #include "include/core/SkSurface.h" |
| #include "include/core/SkTypes.h" |
| #include "include/gpu/GrContext.h" |
| #include "include/gpu/GrTypes.h" |
| #include "include/private/GrTypesPriv.h" |
| #include "src/gpu/GrContextPriv.h" |
| #include "src/gpu/GrSamplerState.h" |
| #include "src/gpu/GrSurfaceContext.h" |
| #include "src/gpu/GrTextureProxy.h" |
| #include "src/image/SkImage_Base.h" |
| #include "src/image/SkImage_Gpu.h" |
| |
| #include <memory> |
| #include <utility> |
| |
| class GrRecordingContext; |
| |
| static void draw_something(SkCanvas* canvas, const SkRect& bounds) { |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setColor(SK_ColorRED); |
| paint.setStyle(SkPaint::kStroke_Style); |
| paint.setStrokeWidth(10); |
| canvas->drawRect(bounds, paint); |
| paint.setStyle(SkPaint::kFill_Style); |
| paint.setColor(SK_ColorBLUE); |
| canvas->drawOval(bounds, paint); |
| } |
| |
| /* |
| * Exercise drawing pictures inside an image, showing that the image version is pixelated |
| * (correctly) when it is inside an image. |
| */ |
| class ImagePictGM : public skiagm::GM { |
| sk_sp<SkPicture> fPicture; |
| sk_sp<SkImage> fImage0; |
| sk_sp<SkImage> fImage1; |
| public: |
| ImagePictGM() {} |
| |
| protected: |
| SkString onShortName() override { |
| return SkString("image-picture"); |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(850, 450); |
| } |
| |
| void onOnceBeforeDraw() override { |
| const SkRect bounds = SkRect::MakeXYWH(100, 100, 100, 100); |
| SkPictureRecorder recorder; |
| draw_something(recorder.beginRecording(bounds), bounds); |
| fPicture = recorder.finishRecordingAsPicture(); |
| |
| // extract enough just for the oval. |
| const SkISize size = SkISize::Make(100, 100); |
| auto srgbColorSpace = SkColorSpace::MakeSRGB(); |
| |
| SkMatrix matrix; |
| matrix.setTranslate(-100, -100); |
| fImage0 = SkImage::MakeFromPicture(fPicture, size, &matrix, nullptr, |
| SkImage::BitDepth::kU8, srgbColorSpace); |
| matrix.postTranslate(-50, -50); |
| matrix.postRotate(45); |
| matrix.postTranslate(50, 50); |
| fImage1 = SkImage::MakeFromPicture(fPicture, size, &matrix, nullptr, |
| SkImage::BitDepth::kU8, srgbColorSpace); |
| } |
| |
| void drawSet(SkCanvas* canvas) const { |
| SkMatrix matrix = SkMatrix::MakeTrans(-100, -100); |
| canvas->drawPicture(fPicture, &matrix, nullptr); |
| canvas->drawImage(fImage0.get(), 150, 0); |
| canvas->drawImage(fImage1.get(), 300, 0); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| canvas->translate(20, 20); |
| |
| this->drawSet(canvas); |
| |
| canvas->save(); |
| canvas->translate(0, 130); |
| canvas->scale(0.25f, 0.25f); |
| this->drawSet(canvas); |
| canvas->restore(); |
| |
| canvas->save(); |
| canvas->translate(0, 200); |
| canvas->scale(2, 2); |
| this->drawSet(canvas); |
| canvas->restore(); |
| } |
| |
| private: |
| typedef skiagm::GM INHERITED; |
| }; |
| DEF_GM( return new ImagePictGM; ) |
| |
| /////////////////////////////////////////////////////////////////////////////////////////////////// |
| |
| static std::unique_ptr<SkImageGenerator> make_pic_generator(GrContext*, sk_sp<SkPicture> pic) { |
| SkMatrix matrix; |
| matrix.setTranslate(-100, -100); |
| return SkImageGenerator::MakeFromPicture({ 100, 100 }, std::move(pic), &matrix, nullptr, |
| SkImage::BitDepth::kU8, |
| SkColorSpace::MakeSRGB()); |
| } |
| |
| class RasterGenerator : public SkImageGenerator { |
| public: |
| RasterGenerator(const SkBitmap& bm) : SkImageGenerator(bm.info()), fBM(bm) |
| {} |
| |
| protected: |
| bool onGetPixels(const SkImageInfo& info, void* pixels, size_t rowBytes, |
| const Options&) override { |
| SkASSERT(fBM.width() == info.width()); |
| SkASSERT(fBM.height() == info.height()); |
| return fBM.readPixels(info, pixels, rowBytes, 0, 0); |
| } |
| private: |
| SkBitmap fBM; |
| }; |
| static std::unique_ptr<SkImageGenerator> make_ras_generator(GrContext*, sk_sp<SkPicture> pic) { |
| SkBitmap bm; |
| bm.allocN32Pixels(100, 100); |
| SkCanvas canvas(bm); |
| canvas.clear(0); |
| canvas.translate(-100, -100); |
| canvas.drawPicture(pic); |
| return std::make_unique<RasterGenerator>(bm); |
| } |
| |
| class EmptyGenerator : public SkImageGenerator { |
| public: |
| EmptyGenerator(const SkImageInfo& info) : SkImageGenerator(info) {} |
| }; |
| |
| class TextureGenerator : public SkImageGenerator { |
| public: |
| TextureGenerator(GrContext* ctx, const SkImageInfo& info, sk_sp<SkPicture> pic) |
| : SkImageGenerator(info) |
| , fCtx(SkRef(ctx)) { |
| |
| sk_sp<SkSurface> surface(SkSurface::MakeRenderTarget(ctx, SkBudgeted::kYes, info, 0, |
| kTopLeft_GrSurfaceOrigin, nullptr)); |
| if (surface) { |
| surface->getCanvas()->clear(0); |
| surface->getCanvas()->translate(-100, -100); |
| surface->getCanvas()->drawPicture(pic); |
| sk_sp<SkImage> image(surface->makeImageSnapshot()); |
| const GrSurfaceProxyView* view = as_IB(image)->view(fCtx.get()); |
| if (view) { |
| fView = *view; |
| } |
| } |
| } |
| protected: |
| GrSurfaceProxyView onGenerateTexture(GrRecordingContext* ctx, const SkImageInfo& info, |
| const SkIPoint& origin, GrMipMapped mipMapped) override { |
| SkASSERT(ctx); |
| SkASSERT(ctx == fCtx.get()); |
| |
| if (!fView) { |
| return {}; |
| } |
| |
| if (origin.fX == 0 && origin.fY == 0 && info.dimensions() == fView.proxy()->dimensions()) { |
| return fView; |
| } |
| |
| // TODO: When we update this function to return a view instead of just a proxy then we can |
| // remove the extra ref that happens when we call asTextureProxyRef. |
| return GrSurfaceProxy::Copy( |
| fCtx.get(), fView.proxy(), fView.origin(), |
| SkColorTypeToGrColorType(info.colorType()), mipMapped, |
| SkIRect::MakeXYWH(origin.x(), origin.y(), info.width(), info.height()), |
| SkBackingFit::kExact, SkBudgeted::kYes); |
| } |
| |
| private: |
| sk_sp<GrContext> fCtx; |
| GrSurfaceProxyView fView; |
| }; |
| |
| static std::unique_ptr<SkImageGenerator> make_tex_generator(GrContext* ctx, sk_sp<SkPicture> pic) { |
| const SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100); |
| |
| if (!ctx) { |
| return std::make_unique<EmptyGenerator>(info); |
| } |
| return std::make_unique<TextureGenerator>(ctx, info, pic); |
| } |
| |
| class ImageCacheratorGM : public skiagm::GM { |
| SkString fName; |
| std::unique_ptr<SkImageGenerator> (*fFactory)(GrContext*, sk_sp<SkPicture>); |
| sk_sp<SkPicture> fPicture; |
| sk_sp<SkImage> fImage; |
| sk_sp<SkImage> fImageSubset; |
| |
| public: |
| ImageCacheratorGM(const char suffix[], |
| std::unique_ptr<SkImageGenerator> (*factory)(GrContext*, sk_sp<SkPicture>)) |
| : fFactory(factory) |
| { |
| fName.printf("image-cacherator-from-%s", suffix); |
| } |
| |
| protected: |
| SkString onShortName() override { |
| return fName; |
| } |
| |
| SkISize onISize() override { |
| return SkISize::Make(960, 450); |
| } |
| |
| void onOnceBeforeDraw() override { |
| const SkRect bounds = SkRect::MakeXYWH(100, 100, 100, 100); |
| SkPictureRecorder recorder; |
| draw_something(recorder.beginRecording(bounds), bounds); |
| fPicture = recorder.finishRecordingAsPicture(); |
| } |
| |
| void makeCaches(GrContext* ctx) { |
| auto gen = fFactory(ctx, fPicture); |
| fImage = SkImage::MakeFromGenerator(std::move(gen)); |
| |
| const SkIRect subset = SkIRect::MakeLTRB(50, 50, 100, 100); |
| |
| gen = fFactory(ctx, fPicture); |
| fImageSubset = SkImage::MakeFromGenerator(std::move(gen), &subset); |
| |
| SkASSERT(fImage->dimensions() == SkISize::Make(100, 100)); |
| SkASSERT(fImageSubset->dimensions() == SkISize::Make(50, 50)); |
| } |
| |
| static void draw_as_bitmap(SkCanvas* canvas, SkImage* image, SkScalar x, SkScalar y) { |
| SkBitmap bitmap; |
| as_IB(image)->getROPixels(&bitmap); |
| canvas->drawBitmap(bitmap, x, y); |
| } |
| |
| static void draw_as_tex(SkCanvas* canvas, SkImage* image, SkScalar x, SkScalar y) { |
| GrSurfaceProxyView view = as_IB(image)->refView(canvas->getGrContext(), GrMipMapped::kNo); |
| if (!view) { |
| // show placeholder if we have no texture |
| SkPaint paint; |
| paint.setStyle(SkPaint::kStroke_Style); |
| SkRect r = SkRect::MakeXYWH(x, y, SkIntToScalar(image->width()), |
| SkIntToScalar(image->width())); |
| canvas->drawRect(r, paint); |
| canvas->drawLine(r.left(), r.top(), r.right(), r.bottom(), paint); |
| canvas->drawLine(r.left(), r.bottom(), r.right(), r.top(), paint); |
| return; |
| } |
| |
| // No API to draw a GrTexture directly, so we cheat and create a private image subclass |
| sk_sp<SkImage> texImage(new SkImage_Gpu(sk_ref_sp(canvas->getGrContext()), |
| image->uniqueID(), std::move(view), |
| image->colorType(), image->alphaType(), |
| image->refColorSpace())); |
| canvas->drawImage(texImage.get(), x, y); |
| } |
| |
| void drawSet(SkCanvas* canvas) const { |
| SkMatrix matrix = SkMatrix::MakeTrans(-100, -100); |
| canvas->drawPicture(fPicture, &matrix, nullptr); |
| |
| // Draw the tex first, so it doesn't hit a lucky cache from the raster version. This |
| // way we also can force the generateTexture call. |
| |
| draw_as_tex(canvas, fImage.get(), 310, 0); |
| draw_as_tex(canvas, fImageSubset.get(), 310+101, 0); |
| |
| draw_as_bitmap(canvas, fImage.get(), 150, 0); |
| draw_as_bitmap(canvas, fImageSubset.get(), 150+101, 0); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| this->makeCaches(canvas->getGrContext()); |
| |
| canvas->translate(20, 20); |
| |
| this->drawSet(canvas); |
| |
| canvas->save(); |
| canvas->translate(0, 130); |
| canvas->scale(0.25f, 0.25f); |
| this->drawSet(canvas); |
| canvas->restore(); |
| |
| canvas->save(); |
| canvas->translate(0, 200); |
| canvas->scale(2, 2); |
| this->drawSet(canvas); |
| canvas->restore(); |
| } |
| |
| private: |
| typedef skiagm::GM INHERITED; |
| }; |
| DEF_GM( return new ImageCacheratorGM("picture", make_pic_generator); ) |
| DEF_GM( return new ImageCacheratorGM("raster", make_ras_generator); ) |
| DEF_GM( return new ImageCacheratorGM("texture", make_tex_generator); ) |