93a1215fe0
clone (+rebase) of https://codereview.chromium.org/1009183002/ BUG=skia: TBR=scroggo@google.com Review URL: https://codereview.chromium.org/1014533004
111 lines
3.7 KiB
C++
111 lines
3.7 KiB
C++
/*
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* Copyright 2011 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 "SampleCode.h"
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#include "SkBlurMask.h"
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#include "SkBlurMaskFilter.h"
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#include "SkCanvas.h"
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#include "SkSurface.h"
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static SkBitmap make_bitmap() {
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SkBitmap bm;
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bm.allocN32Pixels(5, 5);
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for (int y = 0; y < bm.height(); y++) {
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uint32_t* p = bm.getAddr32(0, y);
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for (int x = 0; x < bm.width(); x++) {
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p[x] = ((x + y) & 1) ? SK_ColorWHITE : SK_ColorBLACK;
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}
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}
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bm.unlockPixels();
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return bm;
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}
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class TextureDomainView : public SampleView {
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SkBitmap fBM;
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public:
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TextureDomainView(){
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fBM = make_bitmap();
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}
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protected:
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// overrides from SkEventSink
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virtual bool onQuery(SkEvent* evt) {
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if (SampleCode::TitleQ(*evt)) {
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SampleCode::TitleR(evt, "Texture Domain");
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return true;
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}
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return this->INHERITED::onQuery(evt);
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}
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virtual void onDrawContent(SkCanvas* canvas) {
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SkRect srcRect;
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SkRect dstRect;
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SkPaint paint;
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paint.setFilterQuality(kLow_SkFilterQuality);
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// Test that bitmap draws from malloc-backed bitmaps respect
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// the constrained texture domain.
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srcRect.setXYWH(1, 1, 3, 3);
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dstRect.setXYWH(5, 5, 305, 305);
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canvas->drawBitmapRectToRect(fBM, &srcRect, dstRect, &paint);
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// Test that bitmap draws across separate devices also respect
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// the constrainted texture domain.
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// Note: GPU-backed bitmaps follow a different rendering path
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// when copying from one GPU device to another.
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SkImageInfo info = SkImageInfo::MakeN32(5, 5, kOpaque_SkAlphaType);
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SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
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srcRect.setXYWH(1, 1, 3, 3);
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dstRect.setXYWH(1, 1, 3, 3);
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surface->getCanvas()->drawBitmapRectToRect(fBM, &srcRect, dstRect,
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&paint);
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SkAutoTUnref<SkImage> image(surface->newImageSnapshot());
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srcRect.setXYWH(1, 1, 3, 3);
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dstRect.setXYWH(405, 5, 305, 305);
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canvas->drawImageRect(image, &srcRect, dstRect, &paint);
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// Test that bitmap blurring using a subrect
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// renders correctly
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srcRect.setXYWH(1, 1, 3, 3);
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dstRect.setXYWH(5, 405, 305, 305);
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SkMaskFilter* mf = SkBlurMaskFilter::Create(
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kNormal_SkBlurStyle,
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SkBlurMask::ConvertRadiusToSigma(SkIntToScalar(5)),
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SkBlurMaskFilter::kHighQuality_BlurFlag |
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SkBlurMaskFilter::kIgnoreTransform_BlurFlag);
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paint.setMaskFilter(mf)->unref();
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canvas->drawImageRect(image, &srcRect, dstRect, &paint);
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// Blur and a rotation + NULL src rect
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// This should not trigger the texture domain code
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// but it will test a code path in SkGpuDevice::drawBitmap
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// that handles blurs with rects transformed to non-
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// orthogonal rects. It also tests the NULL src rect handling
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mf = SkBlurMaskFilter::Create(kNormal_SkBlurStyle,
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SkBlurMask::ConvertRadiusToSigma(5),
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SkBlurMaskFilter::kHighQuality_BlurFlag);
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paint.setMaskFilter(mf)->unref();
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dstRect.setXYWH(-150, -150, 300, 300);
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canvas->translate(550, 550);
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canvas->rotate(45);
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canvas->drawBitmapRectToRect(fBM, NULL, dstRect, &paint);
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}
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private:
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typedef SkView INHERITED;
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};
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//////////////////////////////////////////////////////////////////////////////
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static SkView* MyFactory() { return new TextureDomainView; }
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static SkViewRegister reg(MyFactory);
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