#include "gm.h"
#include "SkCanvas.h"
#include "SkGradientShader.h"
+#include "SkSurface.h"
namespace skiagm {
protected:
SkString onShortName() override {
- SkString name("lcdblendmodes");
- name.append(sk_tool_utils::major_platform_os_name());
- return name;
+ return SkString("lcdblendmodes");
+ }
+
+ void onOnceBeforeDraw() override {
+ fCheckerboard.reset(sk_tool_utils::create_checkerboard_shader(SK_ColorBLACK,
+ SK_ColorWHITE,
+ 4));
}
SkISize onISize() override { return SkISize::Make(kWidth, kHeight); }
void onDraw(SkCanvas* canvas) override {
- this->drawColumn(canvas, SK_ColorBLACK, SK_ColorWHITE, false);
- canvas->translate(SkIntToScalar(kColWidth), 0);
- this->drawColumn(canvas, SK_ColorWHITE, SK_ColorBLACK, false);
- canvas->translate(SkIntToScalar(kColWidth), 0);
- this->drawColumn(canvas, SK_ColorGREEN, SK_ColorMAGENTA, false);
- canvas->translate(SkIntToScalar(kColWidth), 0);
- this->drawColumn(canvas, SK_ColorCYAN, SK_ColorMAGENTA, true);
+ SkPaint p;
+ p.setAntiAlias(false);
+ p.setStyle(SkPaint::kFill_Style);
+ p.setShader(fCheckerboard);
+ SkRect r = SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight));
+ canvas->drawRect(r, p);
+
+ SkImageInfo info = SkImageInfo::MakeN32Premul(kWidth, kHeight);
+ SkAutoTUnref<SkSurface> surface(canvas->newSurface(info));
+ if (nullptr == surface) {
+ surface.reset(SkSurface::NewRaster(info));
+ }
+
+ SkCanvas* surfCanvas = surface->getCanvas();
+ this->drawColumn(surfCanvas, SK_ColorBLACK, SK_ColorWHITE, false);
+ surfCanvas->translate(SkIntToScalar(kColWidth), 0);
+ this->drawColumn(surfCanvas, SK_ColorWHITE, SK_ColorBLACK, false);
+ surfCanvas->translate(SkIntToScalar(kColWidth), 0);
+ this->drawColumn(surfCanvas, SK_ColorGREEN, SK_ColorMAGENTA, false);
+ surfCanvas->translate(SkIntToScalar(kColWidth), 0);
+ this->drawColumn(surfCanvas, SK_ColorCYAN, SK_ColorMAGENTA, true);
+
+ SkPaint surfPaint;
+ SkAutoTUnref<SkXfermode> xfermode(SkXfermode::Create(SkXfermode::kSrcOver_Mode));
+ surfPaint.setXfermode(xfermode);
+ surface->draw(canvas, 0, 0, &surfPaint);
}
void drawColumn(SkCanvas* canvas, SkColor backgroundColor, SkColor textColor, bool useGrad) {
private:
SkScalar fTextHeight;
+ SkAutoTUnref<SkShader> fCheckerboard;
typedef skiagm::GM INHERITED;
};
fsBuilder->codeAppendf("%s = ", args.fOutputCoverage);
fsBuilder->appendTextureLookup(args.fSamplers[0], v.fsIn(), kVec2f_GrSLType);
fsBuilder->codeAppend(";");
+ if (cte.maskFormat() == kA565_GrMaskFormat) {
+ // set alpha to be max of rgb coverage
+ fsBuilder->codeAppendf("%s.a = max(max(%s.r, %s.g), %s.b);",
+ args.fOutputCoverage, args.fOutputCoverage,
+ args.fOutputCoverage, args.fOutputCoverage);
+ }
}
}