skia2/gm/subsetshader.cpp
Mike Reed b41bd15a4b Use samplingoptions for bitmap shader
Change-Id: I64c67ddcac29b68cdd0d25e4af4153358939b0ee
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/343736
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Reed <reed@google.com>
2020-12-12 17:08:11 +00:00

47 lines
1.7 KiB
C++

/*
* Copyright 2016 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/SkBitmap.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkMatrix.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkShader.h"
#include "include/core/SkString.h"
#include "include/core/SkTileMode.h"
#include "tools/Resources.h"
DEF_SIMPLE_GM_CAN_FAIL(bitmap_subset_shader, canvas, errorMsg, 256, 256) {
canvas->clear(SK_ColorWHITE);
SkBitmap source;
if (!GetResourceAsBitmap("images/color_wheel.png", &source)) {
*errorMsg = "Could not load images/color_wheel.png. "
"Did you forget to set the resourcePath?";
return skiagm::DrawResult::kFail;
}
SkIRect left = SkIRect::MakeWH(source.width()/2, source.height());
SkIRect right = SkIRect::MakeXYWH(source.width()/2, 0,
source.width()/2, source.height());
SkBitmap leftBitmap, rightBitmap;
source.extractSubset(&leftBitmap, left);
source.extractSubset(&rightBitmap, right);
SkMatrix matrix;
matrix.setScale(0.75f, 0.75f);
matrix.preRotate(30.0f);
SkTileMode tm = SkTileMode::kRepeat;
SkPaint paint;
paint.setShader(leftBitmap.makeShader(tm, tm, SkSamplingOptions(), matrix));
canvas->drawRect(SkRect::MakeWH(256.0f, 128.0f), paint);
paint.setShader(rightBitmap.makeShader(tm, tm, SkSamplingOptions(), matrix));
canvas->drawRect(SkRect::MakeXYWH(0, 128.0f, 256.0f, 128.0f), paint);
return skiagm::DrawResult::kOk;
}