e3a39f7053
In the "ignore input" mode, the input FP contributes nothing and is never sampled. In the "modulate input" cases, the input FP is sampled as one would expect. Change-Id: I96717d63d8e3d7ef6aa4eaaf88154c6e5ce47e55 Bug: skia:10217 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/296299 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: John Stiles <johnstiles@google.com>
140 lines
4.8 KiB
C++
140 lines
4.8 KiB
C++
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "include/core/SkBitmap.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkColorSpace.h"
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#include "include/core/SkImageInfo.h"
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#include "include/core/SkMatrix.h"
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#include "include/core/SkPath.h"
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#include "include/core/SkRect.h"
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#include "include/core/SkRefCnt.h"
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#include "include/core/SkStrokeRec.h"
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#include "include/core/SkSurface.h"
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#include "include/core/SkTypes.h"
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#include "include/gpu/GrBackendSurface.h"
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#include "include/gpu/GrContext.h"
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#include "include/gpu/GrContextOptions.h"
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#include "include/gpu/GrTypes.h"
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#include "include/private/GrTypesPriv.h"
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#include "include/private/SkColorData.h"
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#include "src/gpu/GrCaps.h"
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#include "src/gpu/GrContextPriv.h"
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#include "src/gpu/GrFragmentProcessor.h"
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#include "src/gpu/GrImageInfo.h"
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#include "src/gpu/GrPaint.h"
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#include "src/gpu/GrRenderTargetContext.h"
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#include "src/gpu/GrStyle.h"
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#include "src/gpu/effects/generated/GrConstColorProcessor.h"
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#include "tests/Test.h"
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#include "tools/gpu/GrContextFactory.h"
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#include <utility>
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static void only_allow_default(GrContextOptions* options) {
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options->fGpuPathRenderers = GpuPathRenderers::kNone;
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}
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static SkBitmap read_back(GrRenderTargetContext* rtc, int width, int height) {
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SkImageInfo dstII = SkImageInfo::MakeN32Premul(width, height);
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SkBitmap bm;
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bm.allocPixels(dstII);
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rtc->readPixels(dstII, bm.getAddr(0, 0), bm.rowBytes(), {0, 0});
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return bm;
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}
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static SkPath make_path(const SkRect& outer, int inset, SkPathFillType fill) {
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SkPath p;
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p.addRect(outer, SkPathDirection::kCW);
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p.addRect(outer.makeInset(inset, inset), SkPathDirection::kCCW);
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p.setFillType(fill);
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return p;
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}
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static const int kBigSize = 64; // This should be a power of 2
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static const int kPad = 3;
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// From crbug.com/769898:
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// create an approx fit render target context that will have extra space (i.e., npot)
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// draw an inverse wound concave path into it - forcing use of the stencil-using path renderer
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// throw the RTC away so the backing GrSurface/GrStencilBuffer can be reused
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// create a new render target context that will reuse the prior GrSurface
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// draw a normally wound concave path that touches outside of the approx fit RTC's content rect
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//
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// When the bug manifests the GrDefaultPathRenderer/GrMSAAPathRenderer is/was leaving the stencil
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// buffer outside of the first content rect in a bad state and the second draw would be incorrect.
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static void run_test(GrContext* ctx, skiatest::Reporter* reporter) {
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SkPath invPath = make_path(SkRect::MakeXYWH(0, 0, kBigSize, kBigSize),
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kBigSize/2-1, SkPathFillType::kInverseWinding);
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SkPath path = make_path(SkRect::MakeXYWH(0, 0, kBigSize, kBigSize),
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kPad, SkPathFillType::kWinding);
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GrStyle style(SkStrokeRec::kFill_InitStyle);
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{
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auto rtc = GrRenderTargetContext::Make(
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ctx, GrColorType::kRGBA_8888, nullptr, SkBackingFit::kApprox,
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{kBigSize/2 + 1, kBigSize/2 + 1});
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rtc->clear(SK_PMColor4fBLACK);
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GrPaint paint;
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const SkPMColor4f color = { 1.0f, 0.0f, 0.0f, 1.0f };
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auto fp = GrConstColorProcessor::Make(/*inputFP=*/nullptr, color,
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GrConstColorProcessor::InputMode::kIgnore);
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paint.addColorFragmentProcessor(std::move(fp));
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rtc->drawPath(nullptr, std::move(paint), GrAA::kNo,
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SkMatrix::I(), invPath, style);
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rtc->flush(SkSurface::BackendSurfaceAccess::kNoAccess, GrFlushInfo(), nullptr);
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}
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{
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auto rtc = GrRenderTargetContext::Make(
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ctx, GrColorType::kRGBA_8888, nullptr, SkBackingFit::kExact, {kBigSize, kBigSize});
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rtc->clear(SK_PMColor4fBLACK);
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GrPaint paint;
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const SkPMColor4f color = { 0.0f, 1.0f, 0.0f, 1.0f };
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auto fp = GrConstColorProcessor::Make(/*inputFP=*/nullptr, color,
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GrConstColorProcessor::InputMode::kIgnore);
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paint.addColorFragmentProcessor(std::move(fp));
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rtc->drawPath(nullptr, std::move(paint), GrAA::kNo,
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SkMatrix::I(), path, style);
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SkBitmap bm = read_back(rtc.get(), kBigSize, kBigSize);
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bool correct = true;
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for (int y = kBigSize/2+1; y < kBigSize-kPad-1 && correct; ++y) {
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for (int x = kPad+1; x < kBigSize-kPad-1 && correct; ++x) {
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correct = bm.getColor(x, y) == SK_ColorBLACK;
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REPORTER_ASSERT(reporter, correct);
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}
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}
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}
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}
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DEF_GPUTEST_FOR_CONTEXTS(GrDefaultPathRendererTest,
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sk_gpu_test::GrContextFactory::IsRenderingContext,
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reporter, ctxInfo, only_allow_default) {
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GrContext* ctx = ctxInfo.grContext();
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run_test(ctx, reporter);
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}
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