50e24d7d5f
This is useful, for example, when trying to test a hardware feature that isn't supported in the current context. Bug: skia:8731 Change-Id: I9a363159300c92e4039bfd05400238c27002efb1 Reviewed-on: https://skia-review.googlesource.com/c/189133 Commit-Queue: Chris Dalton <csmartdalton@google.com> Reviewed-by: Mike Klein <mtklein@google.com>
40 lines
1.4 KiB
C++
40 lines
1.4 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 "Resources.h"
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#include "SkBitmap.h"
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#include "SkShader.h"
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#include "gm.h"
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DEF_SIMPLE_GM_CAN_FAIL(bitmap_subset_shader, canvas, errorMsg, 256, 256) {
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canvas->clear(SK_ColorWHITE);
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SkBitmap source;
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if (!GetResourceAsBitmap("images/color_wheel.png", &source)) {
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*errorMsg = "Could not load images/color_wheel.png. "
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"Did you forget to set the resourcePath?";
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return skiagm::DrawResult::kFail;
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}
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SkIRect left = SkIRect::MakeWH(source.width()/2, source.height());
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SkIRect right = SkIRect::MakeXYWH(source.width()/2, 0,
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source.width()/2, source.height());
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SkBitmap leftBitmap, rightBitmap;
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source.extractSubset(&leftBitmap, left);
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source.extractSubset(&rightBitmap, right);
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SkMatrix matrix;
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matrix.setScale(0.75f, 0.75f);
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matrix.preRotate(30.0f);
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SkShader::TileMode tm = SkShader::kRepeat_TileMode;
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SkPaint paint;
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paint.setShader(SkShader::MakeBitmapShader(leftBitmap, tm, tm, &matrix));
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canvas->drawRect(SkRect::MakeWH(256.0f, 128.0f), paint);
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paint.setShader(SkShader::MakeBitmapShader(rightBitmap, tm, tm, &matrix));
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canvas->drawRect(SkRect::MakeXYWH(0, 128.0f, 256.0f, 128.0f), paint);
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return skiagm::DrawResult::kOk;
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}
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