8bb3b21a4a
An upcoming CL (https://skia-review.googlesource.com/c/7995/ (Remove asTextureRef from SkSpecialImage & update effects accordingly)) modifies some untested portions of the SkMagnifierImageFilter. This adds a test to prevents regressions. Change-Id: I9fa406f699e39fa393212e7f63a457b015b36edb Reviewed-on: https://skia-review.googlesource.com/8023 Reviewed-by: Brian Salomon <bsalomon@google.com> Commit-Queue: Robert Phillips <robertphillips@google.com>
113 lines
3.8 KiB
C++
113 lines
3.8 KiB
C++
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm.h"
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#include "SkImageSource.h"
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#include "SkMagnifierImageFilter.h"
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#include "SkSurface.h"
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static sk_sp<SkImage> make_image(GrContext* context, int size, GrSurfaceOrigin origin) {
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if (context) {
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SkImageInfo ii = SkImageInfo::Make(size, size, kN32_SkColorType, kPremul_SkAlphaType);
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sk_sp<SkSurface> surf(SkSurface::MakeRenderTarget(context, SkBudgeted::kYes, ii, 0,
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origin, nullptr));
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SkCanvas* canvas = surf->getCanvas();
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canvas->clear(SK_ColorRED);
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canvas->drawPoint(1.5f, 1.5f, SK_ColorGREEN);
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canvas->drawPoint(2.5f, 1.5f, SK_ColorBLUE);
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canvas->drawPoint(1.5f, 2.5f, SK_ColorCYAN);
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canvas->drawPoint(2.5f, 2.5f, SK_ColorGRAY);
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return surf->makeImageSnapshot();
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} else {
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SkBitmap bm;
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bm.allocN32Pixels(size, size);
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bm.eraseRGB(255, 0, 0);
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*bm.getAddr32(1, 1) = SkPackARGB32(0xFF, 0x00, 0xFF, 0x00);
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*bm.getAddr32(2, 1) = SkPackARGB32(0xFF, 0x00, 0x00, 0xFF);
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*bm.getAddr32(1, 2) = SkPackARGB32(0xFF, 0x00, 0xFF, 0xFF);
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*bm.getAddr32(2, 2) = SkPackARGB32(0xFF, 0x88, 0x88, 0x88);
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return SkImage::MakeFromBitmap(bm);
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}
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}
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/*
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* This GM creates an image with a 2x2:
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* Green | Blue
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* ------------
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* Cyan | Gray
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* block of pixels in one corner of a 33x33 field. The 'srcRect' feature of the
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* SkMagnifierImageFilter is then used to blow it up with different inset border widths.
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*
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* In GPU-mode we wind up drawing 4 rects:
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*
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* BottomLeft origin + 1-wide inset | TopLeft origin + 1-wide inset
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* ----------------------------------------------------------------
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* BottomLeft origin + 7-wide inset | TopLeft origin + 7-wide inset
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*
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* In Raster-mode the source origin isn't used.
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*/
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class SimpleMagnificationGM : public skiagm::GM {
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public:
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SimpleMagnificationGM() {
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this->setBGColor(sk_tool_utils::color_to_565(0xFFCCCCCC));
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}
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protected:
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SkString onShortName() override {
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return SkString("simple-magnification");
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}
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SkISize onISize() override {
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return SkISize::Make(3*kPad+2*kImgSize, 3*kPad+2*kImgSize);
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}
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void draw(SkCanvas* canvas, sk_sp<SkImage> image, const SkIPoint& offset, int inset) {
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sk_sp<SkImageFilter> imgSrc(SkImageSource::Make(std::move(image)));
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SkRect srcRect = SkRect::MakeXYWH(1.0f, 1.0f, 2.0f, 2.0f);
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sk_sp<SkImageFilter> magFilter(SkMagnifierImageFilter::Make(srcRect, inset, imgSrc));
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SkPaint paint;
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paint.setImageFilter(std::move(magFilter));
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canvas->save();
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canvas->translate(offset.fX, offset.fY);
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SkRect rect = SkRect::MakeWH(kImgSize, kImgSize);
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canvas->drawRect(rect, paint);
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canvas->restore();
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}
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void onDraw(SkCanvas* canvas) override {
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GrContext* context = canvas->getGrContext();
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sk_sp<SkImage> bottomLImg = make_image(context, kImgSize, kBottomLeft_GrSurfaceOrigin);
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sk_sp<SkImage> topLImg = make_image(context, kImgSize, kTopLeft_GrSurfaceOrigin);
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int bigOffset = 2 * kPad + kImgSize;
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this->draw(canvas, bottomLImg, SkIPoint::Make(kPad, kPad), 1);
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this->draw(canvas, topLImg, SkIPoint::Make(bigOffset, kPad), 1);
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this->draw(canvas, bottomLImg, SkIPoint::Make(kPad, bigOffset), 7);
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this->draw(canvas, topLImg, SkIPoint::Make(bigOffset, bigOffset), 7);
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}
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private:
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static const int kImgSize = 33;
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static const int kPad = 2;
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typedef skiagm::GM INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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DEF_GM(return new SimpleMagnificationGM;)
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