skia2/gm/preservefillrule.cpp
John Stiles ab7ff17156 Guard TopDeviceSurfaceFillContext calls for null return values.
TopDeviceSurfaceFillContext can return null if there is a paint filter
on the canvas.

Change-Id: I4aa5db63278a561dabea3390b0975bf072e1f679
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/434918
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
2021-07-30 15:36:45 +00:00

99 lines
3.1 KiB
C++

/*
* Copyright 2019 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/SkPath.h"
#include "include/gpu/GrContextOptions.h"
#include "include/gpu/GrRecordingContext.h"
#include "src/core/SkCanvasPriv.h"
#include "src/gpu/GrDirectContextPriv.h"
#include "src/gpu/GrDrawingManager.h"
#include "src/gpu/GrRecordingContextPriv.h"
#include "src/gpu/v1/SurfaceDrawContext_v1.h"
#include "tools/ToolUtils.h"
namespace skiagm {
#define ERR_MSG_ASSERT(COND) \
do { \
if (!(COND)) { \
errorMsg->printf("preservefillrule.cpp(%i): assert(%s)", \
__LINE__, #COND); \
return DrawResult::kFail; \
} \
} while (false)
/**
* This test originally ensured that the ccpr path cache preserved fill rules properly. CCRP is gone
* now, but we decided to keep the test.
*/
class PreserveFillRuleGM : public GpuGM {
public:
PreserveFillRuleGM(bool big) : fBig(big) , fStarSize((big) ? 200 : 20) {}
private:
SkString onShortName() override {
SkString name("preservefillrule");
name += (fBig) ? "_big" : "_little";
return name;
}
SkISize onISize() override { return SkISize::Make(fStarSize * 2, fStarSize * 2); }
void modifyGrContextOptions(GrContextOptions* ctxOptions) override {
ctxOptions->fAllowPathMaskCaching = true;
}
DrawResult onDraw(GrRecordingContext* rContext, SkCanvas* canvas, SkString* errorMsg) override {
auto dContext = GrAsDirectContext(rContext);
auto sfc = SkCanvasPriv::TopDeviceSurfaceFillContext(canvas);
if (!dContext || !sfc) {
*errorMsg = "Requires a direct context.";
return skiagm::DrawResult::kSkip;
}
auto starRect = SkRect::MakeWH(fStarSize, fStarSize);
SkPath star7_winding = ToolUtils::make_star(starRect, 7);
star7_winding.setFillType(SkPathFillType::kWinding);
SkPath star7_evenOdd = star7_winding;
star7_evenOdd.transform(SkMatrix::Translate(0, fStarSize));
star7_evenOdd.setFillType(SkPathFillType::kEvenOdd);
SkPath star5_winding = ToolUtils::make_star(starRect, 5);
star5_winding.transform(SkMatrix::Translate(fStarSize, 0));
star5_winding.setFillType(SkPathFillType::kWinding);
SkPath star5_evenOdd = star5_winding;
star5_evenOdd.transform(SkMatrix::Translate(0, fStarSize));
star5_evenOdd.setFillType(SkPathFillType::kEvenOdd);
SkPaint paint;
paint.setColor(SK_ColorGREEN);
paint.setAntiAlias(true);
canvas->clear(SK_ColorWHITE);
canvas->drawPath(star7_winding, paint);
canvas->drawPath(star7_evenOdd, paint);
canvas->drawPath(star5_winding, paint);
canvas->drawPath(star5_evenOdd, paint);
dContext->priv().flushSurface(sfc->asSurfaceProxy());
return DrawResult::kOk;
}
private:
const bool fBig;
const int fStarSize;
};
DEF_GM( return new PreserveFillRuleGM(true); )
DEF_GM( return new PreserveFillRuleGM(false); )
} // namespace skiagm