/* * Copyright 2017 Google Inc. * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #include "include/core/SkBitmap.h" #include "include/core/SkColor.h" #include "include/core/SkColorSpace.h" #include "include/core/SkImageInfo.h" #include "include/core/SkMatrix.h" #include "include/core/SkPath.h" #include "include/core/SkRect.h" #include "include/core/SkRefCnt.h" #include "include/core/SkStrokeRec.h" #include "include/core/SkSurface.h" #include "include/core/SkTypes.h" #include "include/gpu/GrBackendSurface.h" #include "include/gpu/GrContext.h" #include "include/gpu/GrContextOptions.h" #include "include/gpu/GrTypes.h" #include "include/private/GrTypesPriv.h" #include "include/private/SkColorData.h" #include "src/gpu/GrCaps.h" #include "src/gpu/GrClip.h" #include "src/gpu/GrContextPriv.h" #include "src/gpu/GrFragmentProcessor.h" #include "src/gpu/GrPaint.h" #include "src/gpu/GrRenderTargetContext.h" #include "src/gpu/GrStyle.h" #include "src/gpu/effects/generated/GrConstColorProcessor.h" #include "tests/Test.h" #include "tools/gpu/GrContextFactory.h" #include static void only_allow_default(GrContextOptions* options) { options->fGpuPathRenderers = GpuPathRenderers::kNone; } static SkBitmap read_back(GrRenderTargetContext* rtc, int width, int height) { SkImageInfo dstII = SkImageInfo::MakeN32Premul(width, height); SkBitmap bm; bm.allocPixels(dstII); rtc->readPixels(dstII, bm.getAddr(0, 0), bm.rowBytes(), {0, 0}); return bm; } static SkPath make_path(const SkRect& outer, int inset, SkPath::FillType fill) { SkPath p; p.addRect(outer, SkPath::kCW_Direction); p.addRect(outer.makeInset(inset, inset), SkPath::kCCW_Direction); p.setFillType(fill); return p; } static const int kBigSize = 64; // This should be a power of 2 static const int kPad = 3; // From crbug.com/769898: // create an approx fit render target context that will have extra space (i.e., npot) // draw an inverse wound concave path into it - forcing use of the stencil-using path renderer // throw the RTC away so the backing GrSurface/GrStencilBuffer can be reused // create a new render target context that will reuse the prior GrSurface // draw a normally wound concave path that touches outside of the approx fit RTC's content rect // // When the bug manifests the GrDefaultPathRenderer/GrMSAAPathRenderer is/was leaving the stencil // buffer outside of the first content rect in a bad state and the second draw would be incorrect. static void run_test(GrContext* ctx, skiatest::Reporter* reporter) { SkPath invPath = make_path(SkRect::MakeXYWH(0, 0, kBigSize, kBigSize), kBigSize/2-1, SkPath::kInverseWinding_FillType); SkPath path = make_path(SkRect::MakeXYWH(0, 0, kBigSize, kBigSize), kPad, SkPath::kWinding_FillType); GrStyle style(SkStrokeRec::kFill_InitStyle); { auto rtc = ctx->priv().makeDeferredRenderTargetContext( SkBackingFit::kApprox, kBigSize/2 + 1, kBigSize/2 + 1, GrColorType::kRGBA_8888, nullptr); rtc->clear(nullptr, { 0, 0, 0, 1 }, GrRenderTargetContext::CanClearFullscreen::kYes); GrPaint paint; const SkPMColor4f color = { 1.0f, 0.0f, 0.0f, 1.0f }; auto fp = GrConstColorProcessor::Make(color, GrConstColorProcessor::InputMode::kIgnore); paint.addColorFragmentProcessor(std::move(fp)); rtc->drawPath(GrNoClip(), std::move(paint), GrAA::kNo, SkMatrix::I(), invPath, style); rtc->flush(SkSurface::BackendSurfaceAccess::kNoAccess, GrFlushInfo()); } { auto rtc = ctx->priv().makeDeferredRenderTargetContext( SkBackingFit::kExact, kBigSize, kBigSize, GrColorType::kRGBA_8888, nullptr); rtc->clear(nullptr, { 0, 0, 0, 1 }, GrRenderTargetContext::CanClearFullscreen::kYes); GrPaint paint; const SkPMColor4f color = { 0.0f, 1.0f, 0.0f, 1.0f }; auto fp = GrConstColorProcessor::Make(color, GrConstColorProcessor::InputMode::kIgnore); paint.addColorFragmentProcessor(std::move(fp)); rtc->drawPath(GrNoClip(), std::move(paint), GrAA::kNo, SkMatrix::I(), path, style); SkBitmap bm = read_back(rtc.get(), kBigSize, kBigSize); bool correct = true; for (int y = kBigSize/2+1; y < kBigSize-kPad-1 && correct; ++y) { for (int x = kPad+1; x < kBigSize-kPad-1 && correct; ++x) { correct = bm.getColor(x, y) == SK_ColorBLACK; REPORTER_ASSERT(reporter, correct); } } } } DEF_GPUTEST_FOR_CONTEXTS(GrDefaultPathRendererTest, sk_gpu_test::GrContextFactory::IsRenderingContext, reporter, ctxInfo, only_allow_default) { GrContext* ctx = ctxInfo.grContext(); run_test(ctx, reporter); }