blob: 9638081d2a9b9a762691ecaacc339a69ba38fafe [file] [log] [blame]
/*
* 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/SkCanvas.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPath.h"
#include "include/gpu/GrContextOptions.h"
namespace skiagm {
class BatchedConvexPathsGM : public GM {
private:
SkString getName() const override { return SkString("batchedconvexpaths"); }
SkISize getISize() override { return SkISize::Make(512, 512); }
void modifyGrContextOptions(GrContextOptions* ctxOptions) override {
// Ensure our paths don't go through the atlas path renderer.
ctxOptions->fGpuPathRenderers &= ~GpuPathRenderers::kAtlas;
}
DrawResult onDraw(SkCanvas* canvas, SkString* errorMsg) override {
canvas->clear(SK_ColorBLACK);
for (uint32_t i = 0; i < 10; ++i) {
SkAutoCanvasRestore acr(canvas, true);
int numPoints = (i + 3) * 3;
SkPath path;
path.moveTo(1, 0);
for (float j = 1; j < numPoints; j += 3) {
constexpr float k2PI = SK_ScalarPI * 2;
path.cubicTo(cosf(j/numPoints * k2PI), sinf(j/numPoints * k2PI),
cosf((j+1)/numPoints * k2PI), sinf((j+1)/numPoints * k2PI),
j+2 == numPoints ? 1 : cosf((j+2)/numPoints * k2PI),
j+2 == numPoints ? 0 : sinf((j+2)/numPoints * k2PI));
}
float scale = 256 - i*24;
canvas->translate(scale + (256 - scale) * .33f, scale + (256 - scale) * .33f);
canvas->scale(scale, scale);
SkPaint paint;
paint.setColor(((i + 123458383u) * 285018463u) | 0xff808080);
paint.setAlphaf(0.3f);
paint.setAntiAlias(true);
canvas->drawPath(path, paint);
}
return DrawResult::kOk;
}
};
DEF_GM( return new BatchedConvexPathsGM; )
} // namespace skiagm