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/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "Test.h"
#if SK_SUPPORT_GPU
#include "GrContext.h"
#include "GrTest.h"
#include "batches/GrAADistanceFieldPathRenderer.h"
#include "SkPath.h"
// This test case including path coords and matrix taken from crbug.com/627443.
// Because of inaccuracies in large floating point values this causes the
// the path renderer to attempt to add a path DF to its atlas that is larger
// than the plot size which used to crash rather than fail gracefully.
static void test_far_from_origin(GrRenderTargetContext* renderTargetContext, GrPathRenderer* pr,
GrResourceProvider* rp) {
SkPath path;
path.lineTo(49.0255089839f, 0.473541f);
// This extra line wasn't in the original bug but was added to fake out GrShape's special
// handling of single line segments.
path.rLineTo(0.015f, 0.015f);
static constexpr SkScalar mvals[] = {14.0348252854f, 2.13026182736f,
13.6122547187f, 118.309922702f,
1912337682.09f, 2105391889.87f};
SkMatrix matrix;
matrix.setAffine(mvals);
SkMatrix inverse;
SkAssertResult(matrix.invert(&inverse));
path.transform(inverse);
SkStrokeRec rec(SkStrokeRec::kFill_InitStyle);
rec.setStrokeStyle(1.f);
rec.setStrokeParams(SkPaint::kRound_Cap, SkPaint::kRound_Join, 1.f);
GrStyle style(rec, nullptr);
GrShape shape(path, style);
shape = shape.applyStyle(GrStyle::Apply::kPathEffectAndStrokeRec, 1.f);
GrPaint paint;
paint.setXPFactory(GrPorterDuffXPFactory::Make(SkBlendMode::kSrc));
GrNoClip noClip;
GrPathRenderer::DrawPathArgs args;
args.fPaint = &paint;
args.fUserStencilSettings = &GrUserStencilSettings::kUnused;
args.fRenderTargetContext = renderTargetContext;
args.fClip = &noClip;
args.fResourceProvider = rp;
args.fViewMatrix = &matrix;
args.fShape = &shape;
args.fAntiAlias = true;
args.fGammaCorrect = false;
pr->drawPath(args);
}
DEF_GPUTEST_FOR_ALL_GL_CONTEXTS(AADistanceFieldPathRenderer, reporter, ctxInfo) {
// The DF PR only works with contexts that support derivatives
if (!ctxInfo.grContext()->caps()->shaderCaps()->shaderDerivativeSupport()) {
return;
}
sk_sp<GrRenderTargetContext> rtc(ctxInfo.grContext()->makeRenderTargetContext(
SkBackingFit::kApprox,
800, 800,
kRGBA_8888_GrPixelConfig,
nullptr,
0,
kTopLeft_GrSurfaceOrigin));
if (!rtc) {
return;
}
GrAADistanceFieldPathRenderer dfpr;
GrTestTarget tt;
ctxInfo.grContext()->getTestTarget(&tt, rtc);
GrResourceProvider* rp = tt.resourceProvider();
test_far_from_origin(rtc.get(), &dfpr, rp);
ctxInfo.grContext()->flush();
}
#endif
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