blob: ab561dcd92041742377a5acb00db66ac1bbdd412 [file] [log] [blame]
/*
* Copyright 2015 Google Inc.
*
* Use of this source code is governed by a BD-style license that can be
* found in the LICENSE file.
*/
#include "gm/gm.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkFont.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkPaint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkSize.h"
#include "include/core/SkString.h"
#include "include/core/SkSurface.h"
#include "include/core/SkSurfaceProps.h"
#include "include/core/SkTextBlob.h"
#include "include/core/SkTypeface.h"
#include "tools/ToolUtils.h"
// This tests that we don't try to reuse textblobs from the GPU textblob cache across pixel geometry
// changes when we have LCD. crbug/486744
namespace skiagm {
class TextBlobGeometryChange : public GM {
public:
TextBlobGeometryChange() { }
protected:
SkString onShortName() override {
return SkString("textblobgeometrychange");
}
SkISize onISize() override {
return SkISize::Make(kWidth, kHeight);
}
void onDraw(SkCanvas* canvas) override {
const char text[] = "Hamburgefons";
SkFont font(ToolUtils::create_portable_typeface(), 20);
font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
SkTextBlobBuilder builder;
ToolUtils::add_to_text_blob(&builder, text, font, 10, 10);
sk_sp<SkTextBlob> blob(builder.make());
SkImageInfo info = SkImageInfo::MakeN32Premul(200, 200);
SkSurfaceProps props(0, kUnknown_SkPixelGeometry);
auto surface = ToolUtils::makeSurface(canvas, info, &props);
SkCanvas* c = surface->getCanvas();
// LCD text on white background
SkRect rect = SkRect::MakeLTRB(0.f, 0.f, SkIntToScalar(kWidth), kHeight / 2.f);
SkPaint rectPaint;
rectPaint.setColor(0xffffffff);
canvas->drawRect(rect, rectPaint);
canvas->drawTextBlob(blob, 10, 50, SkPaint());
// This should not look garbled since we should disable LCD text in this case
// (i.e., unknown pixel geometry)
c->clear(0x00ffffff);
c->drawTextBlob(blob, 10, 150, SkPaint());
surface->draw(canvas, 0, 0, nullptr);
}
private:
static constexpr int kWidth = 200;
static constexpr int kHeight = 200;
using INHERITED = GM;
};
//////////////////////////////////////////////////////////////////////////////
DEF_GM(return new TextBlobGeometryChange;)
} // namespace skiagm