blob: 6a2f8af9255a705e904d2e3bd872772cc71ce342 [file] [log] [blame]
/*
* Copyright 2020 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/SkSurface.h"
DEF_SIMPLE_GM(bicubic, canvas, 300, 320) {
canvas->clear(SK_ColorBLACK);
const SkSamplingOptions gSamplings[] = {
SkSamplingOptions(SkFilterMode::kNearest),
SkSamplingOptions(SkFilterMode::kLinear),
SkSamplingOptions(SkCubicResampler::Mitchell()),
};
auto make_img = []() {
auto surf = SkSurface::MakeRasterN32Premul(7, 7);
surf->getCanvas()->drawColor(SK_ColorBLACK);
SkPaint paint;
paint.setColor(SK_ColorWHITE);
surf->getCanvas()->drawLine(3.5f, 0, 3.5f, 8, paint);
return surf->makeImageSnapshot();
};
auto img = make_img();
canvas->scale(40, 8);
for (const auto& s : gSamplings) {
canvas->drawImage(img, 0, 0, s, nullptr);
canvas->translate(0, img->height() + 1.0f);
}
const SkRect r = SkRect::MakeIWH(img->width(), img->height());
SkPaint paint;
SkImage::CubicResampler cubics[] = {
SkCubicResampler::CatmullRom(),
SkCubicResampler::Mitchell(),
};
for (auto c : cubics) {
paint.setShader(img->makeShader(SkTileMode::kClamp, SkTileMode::kClamp,
SkSamplingOptions(c)));
canvas->drawRect(r, paint);
canvas->translate(0, img->height() + 1.0f);
}
}