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- /*
- * 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/SkCanvas.h"
- #include "include/core/SkColor.h"
- #include "include/core/SkFilterQuality.h"
- #include "include/core/SkImage.h"
- #include "include/core/SkImageInfo.h"
- #include "include/core/SkMatrix.h"
- #include "include/core/SkPaint.h"
- #include "include/core/SkRect.h"
- #include "include/core/SkRefCnt.h"
- #include "include/core/SkShader.h"
- #include "include/core/SkSurface.h"
- #include "include/core/SkTileMode.h"
- #include "tools/Resources.h"
- #include "tools/ToolUtils.h"
- static sk_sp<SkImage> make_image(SkCanvas* rootCanvas, SkColor color) {
- SkImageInfo info = SkImageInfo::MakeN32Premul(100, 100);
- auto surface(ToolUtils::makeSurface(rootCanvas, info));
- SkPaint paint;
- paint.setAntiAlias(true);
- paint.setColor(color);
- surface->getCanvas()->drawIRect(SkIRect::MakeXYWH(25, 25, 50, 50), paint);
- return surface->makeImageSnapshot();
- }
- DEF_SIMPLE_GM(localmatriximageshader, canvas, 250, 250) {
- sk_sp<SkImage> redImage = make_image(canvas, SK_ColorRED);
- SkMatrix translate = SkMatrix::MakeTrans(100.0f, 0.0f);
- SkMatrix rotate;
- rotate.setRotate(45.0f);
- sk_sp<SkShader> redImageShader = redImage->makeShader(&translate);
- sk_sp<SkShader> redLocalMatrixShader = redImageShader->makeWithLocalMatrix(rotate);
- // Rotate about the origin will happen first.
- SkPaint paint;
- paint.setShader(redLocalMatrixShader);
- canvas->drawIRect(SkIRect::MakeWH(250, 250), paint);
- sk_sp<SkImage> blueImage = make_image(canvas, SK_ColorBLUE);
- sk_sp<SkShader> blueImageShader = blueImage->makeShader(&rotate);
- sk_sp<SkShader> blueLocalMatrixShader = blueImageShader->makeWithLocalMatrix(translate);
- // Translate will happen first.
- paint.setShader(blueLocalMatrixShader);
- canvas->drawIRect(SkIRect::MakeWH(250, 250), paint);
- canvas->translate(100.0f, 0.0f);
- // Use isAImage() and confirm that the shaders will draw exactly the same (to the right by 100).
- SkTileMode mode[2];
- SkMatrix matrix;
- SkImage* image = redLocalMatrixShader->isAImage(&matrix, mode);
- paint.setShader(image->makeShader(mode[0], mode[1], &matrix));
- canvas->drawIRect(SkIRect::MakeWH(250, 250), paint);
- image = blueLocalMatrixShader->isAImage(&matrix, mode);
- paint.setShader(image->makeShader(mode[0], mode[1], &matrix));
- canvas->drawIRect(SkIRect::MakeWH(250, 250), paint);
- }
- DEF_SIMPLE_GM(localmatriximageshader_filtering, canvas, 256, 256) {
- // Test that filtering decisions (eg bicubic for upscale) are made correctly when the scale
- // comes from a local matrix shader.
- auto image = GetResourceAsImage("images/mandrill_256.png");
- SkPaint p;
- p.setFilterQuality(kHigh_SkFilterQuality);
- SkMatrix m = SkMatrix::MakeScale(2.0f);
- p.setShader(image->makeShader()->makeWithLocalMatrix(m));
- canvas->drawRect(SkRect::MakeXYWH(0, 0, 256, 256), p);
- }
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