92f6eb1602
Change-Id: I2bca419a3273a9cc8a984b0f4159f518968c6652 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/313077 Reviewed-by: Mike Reed <reed@google.com> Commit-Queue: Mike Reed <reed@google.com>
119 lines
4.3 KiB
C++
119 lines
4.3 KiB
C++
/*
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* Copyright 2016 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/gm.h"
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#include "include/core/SkCanvas.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkFilterQuality.h"
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#include "include/core/SkImage.h"
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#include "include/core/SkPaint.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkScalar.h"
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#include "include/core/SkShader.h"
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#include "include/core/SkSize.h"
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#include "include/core/SkString.h"
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#include "include/core/SkSurface.h"
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namespace skiagm {
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constexpr SkRect kSrcImageClip{75, 75, 275, 275};
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/*
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* The purpose of this test is to exercise all three codepaths in GrRenderTargetContext
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* (drawFilledRect, fillRectToRect, fillRectWithLocalMatrix) that pre-crop filled rects based on the
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* clip.
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*
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* The test creates an image of a green square surrounded by red background, then draws this image
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* in various ways with the red clipped out. The test is successful if there is no visible red
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* background, scissor is never used, and ideally, all the rectangles draw in one GrDrawOp.
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*/
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class CroppedRectsGM : public GM {
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private:
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SkString onShortName() final { return SkString("croppedrects"); }
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SkISize onISize() override { return SkISize::Make(500, 500); }
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void onOnceBeforeDraw() override {
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sk_sp<SkSurface> srcSurface = SkSurface::MakeRasterN32Premul(500, 500);
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SkCanvas* srcCanvas = srcSurface->getCanvas();
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srcCanvas->clear(SK_ColorRED);
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SkPaint paint;
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paint.setColor(0xff00ff00);
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srcCanvas->drawRect(kSrcImageClip, paint);
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constexpr SkScalar kStrokeWidth = 10;
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SkPaint stroke;
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stroke.setStyle(SkPaint::kStroke_Style);
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stroke.setStrokeWidth(kStrokeWidth);
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stroke.setColor(0xff008800);
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srcCanvas->drawRect(kSrcImageClip.makeInset(kStrokeWidth / 2, kStrokeWidth / 2), stroke);
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fSrcImage = srcSurface->makeImageSnapshot();
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fSrcImageShader = fSrcImage->makeShader();
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}
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void onDraw(SkCanvas* canvas) override {
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canvas->clear(SK_ColorWHITE);
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{
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// GrRenderTargetContext::drawFilledRect.
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SkAutoCanvasRestore acr(canvas, true);
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SkPaint paint;
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paint.setShader(fSrcImageShader);
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paint.setFilterQuality(kNone_SkFilterQuality);
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canvas->clipRect(kSrcImageClip);
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canvas->drawPaint(paint);
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}
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{
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// GrRenderTargetContext::fillRectToRect.
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SkAutoCanvasRestore acr(canvas, true);
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SkPaint paint;
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paint.setFilterQuality(kNone_SkFilterQuality);
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SkRect drawRect = SkRect::MakeXYWH(350, 100, 100, 300);
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canvas->clipRect(drawRect);
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canvas->drawImageRect(fSrcImage.get(),
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kSrcImageClip.makeOutset(0.5f * kSrcImageClip.width(),
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kSrcImageClip.height()),
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drawRect.makeOutset(0.5f * drawRect.width(), drawRect.height()),
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&paint);
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}
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{
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// GrRenderTargetContext::fillRectWithLocalMatrix.
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SkAutoCanvasRestore acr(canvas, true);
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SkPath path = SkPath::Line(
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{kSrcImageClip.fLeft - kSrcImageClip.width(), kSrcImageClip.centerY()},
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{kSrcImageClip.fRight + 3 * kSrcImageClip.width(), kSrcImageClip.centerY()});
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SkPaint paint;
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paint.setStyle(SkPaint::kStroke_Style);
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paint.setStrokeWidth(2 * kSrcImageClip.height());
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paint.setShader(fSrcImageShader);
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paint.setFilterQuality(kNone_SkFilterQuality);
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canvas->translate(23, 301);
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canvas->scale(300 / kSrcImageClip.width(), 100 / kSrcImageClip.height());
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canvas->translate(-kSrcImageClip.left(), -kSrcImageClip.top());
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canvas->clipRect(kSrcImageClip);
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canvas->drawPath(path, paint);
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}
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// TODO: assert the draw target only has one op in the post-MDB world.
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}
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sk_sp<SkImage> fSrcImage;
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sk_sp<SkShader> fSrcImageShader;
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typedef GM INHERITED;
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};
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DEF_GM( return new CroppedRectsGM(); )
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} // namespace skiagm
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