677a12f38d
Change-Id: Ie1ba66881743eee01d36f7c7032307fbdca1e671 Bug: 242216 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/518496 Reviewed-by: Robert Phillips <robertphillips@google.com> Commit-Queue: Kevin Lubick <kjlubick@google.com>
123 lines
3.2 KiB
C++
123 lines
3.2 KiB
C++
/*
|
|
* Copyright 2021 Google LLC
|
|
*
|
|
* 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/SkImage.h"
|
|
#include "include/core/SkPaint.h"
|
|
#include "include/effects/SkGradientShader.h"
|
|
#include "tools/Resources.h"
|
|
|
|
namespace {
|
|
|
|
sk_sp<SkShader> create_gradient_shader(SkRect r) {
|
|
// TODO: it seems like only the x-component of sk_FragCoord is making it to the shader!
|
|
SkPoint pts[2] = { {r.fLeft, r.fTop}, {r.fRight, r.fTop} };
|
|
SkColor colors[] = { SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE };
|
|
float offsets[] = { 0.0f, 0.75f, 1.0f };
|
|
|
|
return SkGradientShader::MakeLinear(pts, colors, offsets, SK_ARRAY_COUNT(colors),
|
|
SkTileMode::kClamp);
|
|
}
|
|
|
|
sk_sp<SkShader> create_image_shader() {
|
|
SkImageInfo ii = SkImageInfo::Make(100, 100, kRGBA_8888_SkColorType, kPremul_SkAlphaType);
|
|
SkBitmap bitmap;
|
|
|
|
bitmap.allocPixels(ii);
|
|
bitmap.eraseColor(SK_ColorWHITE);
|
|
|
|
SkCanvas canvas(bitmap);
|
|
|
|
SkPaint redPaint;
|
|
redPaint.setColor(SK_ColorRED);
|
|
canvas.drawCircle(50, 50, 50, redPaint);
|
|
|
|
bitmap.setAlphaType(kOpaque_SkAlphaType);
|
|
bitmap.setImmutable();
|
|
|
|
sk_sp<SkImage> img = SkImage::MakeFromBitmap(bitmap);
|
|
// TODO: we'll need a 'makeTextureImage' call here
|
|
|
|
return img->makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat, SkSamplingOptions());
|
|
}
|
|
|
|
sk_sp<SkShader> create_blend_shader(SkBlendMode bm) {
|
|
constexpr SkColor4f kTransYellow = {1.0f, 1.0f, 0.0f, 0.5f};
|
|
|
|
sk_sp<SkShader> solid = SkShaders::Color(kTransYellow, nullptr);
|
|
return SkShaders::Blend(bm, std::move(solid), create_image_shader());
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
namespace skiagm {
|
|
|
|
// This is just for bootstrapping Graphite.
|
|
class GraphiteStartGM : public GM {
|
|
public:
|
|
GraphiteStartGM() {
|
|
this->setBGColor(0xFFCCCCCC);
|
|
GetResourceAsBitmap("images/color_wheel.gif", &fBitmap);
|
|
}
|
|
|
|
protected:
|
|
SkString onShortName() override {
|
|
return SkString("graphitestart");
|
|
}
|
|
|
|
SkISize onISize() override {
|
|
return SkISize::Make(256, 384);
|
|
}
|
|
|
|
void onDraw(SkCanvas* canvas) override {
|
|
|
|
// UL corner
|
|
{
|
|
SkPaint p;
|
|
p.setColor(SK_ColorRED);
|
|
canvas->drawRect({2, 2, 127, 127}, p);
|
|
}
|
|
|
|
// UR corner
|
|
{
|
|
SkRect r{129, 2, 255, 127};
|
|
SkPaint p;
|
|
p.setShader(create_gradient_shader(r));
|
|
canvas->drawRect(r, p);
|
|
}
|
|
|
|
// LL corner
|
|
{
|
|
SkPaint p;
|
|
p.setShader(create_image_shader());
|
|
canvas->drawRect({2, 129, 127, 255}, p);
|
|
}
|
|
|
|
// LR corner
|
|
{
|
|
SkPaint p;
|
|
p.setShader(create_blend_shader(SkBlendMode::kModulate));
|
|
canvas->drawRect({129, 129, 255, 255}, p);
|
|
}
|
|
|
|
#ifdef SK_GRAPHITE_ENABLED
|
|
// TODO: failing serialize test on Linux, not sure what's going on
|
|
canvas->writePixels(fBitmap, 0, 256);
|
|
#endif
|
|
}
|
|
|
|
SkBitmap fBitmap;
|
|
};
|
|
|
|
//////////////////////////////////////////////////////////////////////////////
|
|
|
|
DEF_GM(return new GraphiteStartGM;)
|
|
|
|
} // namespace skiagm
|