Fix GrDefaultPathRender inversely wound path bug
Bug: 769898
Change-Id: I3b1a43b1e114b35105493a0cfa01a1f01b65fa56
Reviewed-on: https://skia-review.googlesource.com/64065
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/dm/DM.cpp b/dm/DM.cpp
index 00bcf6a..8fffd68 100644
--- a/dm/DM.cpp
+++ b/dm/DM.cpp
@@ -1282,8 +1282,11 @@
} reporter;
if (!FLAGS_dryRun && !is_blacklisted("_", "tests", "_", test.name)) {
+ GrContextOptions options = grCtxOptions;
+ test.modifyGrContextOptions(&options);
+
start("unit", "test", "", test.name);
- GrContextFactory factory(grCtxOptions);
+ GrContextFactory factory(options);
test.run(&reporter, &factory);
}
done("unit", "test", "", test.name);
diff --git a/gn/tests.gni b/gn/tests.gni
index 3c42b80..b051326 100644
--- a/gn/tests.gni
+++ b/gn/tests.gni
@@ -48,6 +48,7 @@
"$_tests/DashPathEffectTest.cpp",
"$_tests/DataRefTest.cpp",
"$_tests/DequeTest.cpp",
+ "$_tests/DefaultPathRendererTest.cpp",
"$_tests/DetermineDomainModeTest.cpp",
"$_tests/DeviceLooperTest.cpp",
"$_tests/DeviceTest.cpp",
diff --git a/src/gpu/ops/GrDefaultPathRenderer.cpp b/src/gpu/ops/GrDefaultPathRenderer.cpp
index 40631a7..4a9f0c2 100644
--- a/src/gpu/ops/GrDefaultPathRenderer.cpp
+++ b/src/gpu/ops/GrDefaultPathRenderer.cpp
@@ -568,8 +568,10 @@
SkScalar srcSpaceTol = GrPathUtils::scaleToleranceToSrc(tol, viewMatrix, path.getBounds());
SkRect devBounds;
- GetPathDevBounds(path, renderTargetContext->width(), renderTargetContext->height(), viewMatrix,
- &devBounds);
+ GetPathDevBounds(path,
+ renderTargetContext->asRenderTargetProxy()->worstCaseWidth(),
+ renderTargetContext->asRenderTargetProxy()->worstCaseHeight(),
+ viewMatrix, &devBounds);
for (int p = 0; p < passCount; ++p) {
if (lastPassIsBounds && (p == passCount-1)) {
diff --git a/src/gpu/ops/GrMSAAPathRenderer.cpp b/src/gpu/ops/GrMSAAPathRenderer.cpp
index 27d78a7..50741bc 100644
--- a/src/gpu/ops/GrMSAAPathRenderer.cpp
+++ b/src/gpu/ops/GrMSAAPathRenderer.cpp
@@ -637,8 +637,10 @@
}
SkRect devBounds;
- GetPathDevBounds(path, renderTargetContext->width(), renderTargetContext->height(), viewMatrix,
- &devBounds);
+ GetPathDevBounds(path,
+ renderTargetContext->asRenderTargetProxy()->worstCaseWidth(),
+ renderTargetContext->asRenderTargetProxy()->worstCaseHeight(),
+ viewMatrix, &devBounds);
SkASSERT(passes[0]);
{ // First pass
diff --git a/tests/DefaultPathRendererTest.cpp b/tests/DefaultPathRendererTest.cpp
new file mode 100644
index 0000000..d1e102b
--- /dev/null
+++ b/tests/DefaultPathRendererTest.cpp
@@ -0,0 +1,136 @@
+/*
+ * 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 "Test.h"
+
+#if SK_SUPPORT_GPU
+#include "GrClip.h"
+#include "GrRenderTargetContext.h"
+#include "GrStyle.h"
+#include "GrTypesPriv.h"
+
+#include "effects/GrConstColorProcessor.h"
+
+static void allow_default_and_msaa(GrContextOptions* options) {
+ options->fGpuPathRenderers = GpuPathRenderers::kMSAA;
+}
+
+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, 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->makeDeferredRenderTargetContext(SkBackingFit::kApprox,
+ kBigSize/2+1, kBigSize/2+1,
+ kRGBA_8888_GrPixelConfig, nullptr);
+
+ rtc->clear(nullptr, GrColorPackRGBA(0x0, 0x0, 0x0, 0xFF), true);
+
+ GrPaint paint;
+
+ const GrColor4f color = { 1.0f, 0.0f, 0.0f, 1.0f };
+ auto fp = GrConstColorProcessor::Make(color, GrConstColorProcessor::kIgnore_InputMode);
+ paint.addColorFragmentProcessor(std::move(fp));
+
+ rtc->drawPath(GrNoClip(), std::move(paint), GrAA::kNo,
+ SkMatrix::I(), invPath, style);
+
+ rtc->prepareForExternalIO(0, nullptr);
+ }
+
+ {
+ auto rtc = ctx->makeDeferredRenderTargetContext(SkBackingFit::kExact, kBigSize, kBigSize,
+ kRGBA_8888_GrPixelConfig, nullptr);
+
+ rtc->clear(nullptr, GrColorPackRGBA(0x0, 0x0, 0x0, 0xFF), true);
+
+ GrPaint paint;
+
+ const GrColor4f color = { 0.0f, 1.0f, 0.0f, 1.0f };
+ auto fp = GrConstColorProcessor::Make(color, GrConstColorProcessor::kIgnore_InputMode);
+ 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);
+}
+
+DEF_GPUTEST_FOR_CONTEXTS(GrMSAAPathRendererTest,
+ sk_gpu_test::GrContextFactory::IsRenderingContext,
+ reporter, ctxInfo, allow_default_and_msaa) {
+ GrContext* ctx = ctxInfo.grContext();
+
+ if (!ctx->caps()->sampleShadingSupport()) { // The MSAAPathRenderer requires this
+ return;
+ }
+
+ run_test(ctx, reporter);
+}
+
+#endif
diff --git a/tests/ResourceCacheTest.cpp b/tests/ResourceCacheTest.cpp
index 0cb1d2b..863830a 100644
--- a/tests/ResourceCacheTest.cpp
+++ b/tests/ResourceCacheTest.cpp
@@ -120,7 +120,7 @@
// This currently fails on ES3 ANGLE contexts
DEF_GPUTEST_FOR_CONTEXTS(ResourceCacheStencilBuffers, &is_rendering_and_not_angle_es3, reporter,
- ctxInfo) {
+ ctxInfo, nullptr) {
GrContext* context = ctxInfo.grContext();
if (context->caps()->avoidStencilBuffers()) {
return;
diff --git a/tests/Test.h b/tests/Test.h
index c9a381e..7ef2932 100644
--- a/tests/Test.h
+++ b/tests/Test.h
@@ -22,6 +22,7 @@
class GLTestContext;
} // namespace sk_gpu_test
class GrContext;
+class GrContextOptions;
#endif
namespace skiatest {
@@ -89,12 +90,21 @@
};
typedef void (*TestProc)(skiatest::Reporter*, sk_gpu_test::GrContextFactory*);
+typedef void (*ContextOptionsProc)(GrContextOptions*);
struct Test {
- Test(const char* n, bool g, TestProc p) : name(n), needsGpu(g), proc(p) {}
+ Test(const char* n, bool g, TestProc p, ContextOptionsProc optionsProc = nullptr)
+ : name(n), needsGpu(g), proc(p), fContextOptionsProc(optionsProc) {}
const char* name;
bool needsGpu;
TestProc proc;
+ ContextOptionsProc fContextOptionsProc;
+
+ void modifyGrContextOptions(GrContextOptions* options) {
+ if (fContextOptionsProc) {
+ (*fContextOptionsProc)(options);
+ }
+ }
void run(skiatest::Reporter* r, sk_gpu_test::GrContextFactory* factory) const {
TRACE_EVENT1("test", TRACE_FUNC, "name", this->name/*these are static*/);
@@ -200,31 +210,36 @@
skiatest::Test(#name, true, test_##name)); \
void test_##name(skiatest::Reporter* reporter, sk_gpu_test::GrContextFactory* factory)
-#define DEF_GPUTEST_FOR_CONTEXTS(name, context_filter, reporter, context_info) \
- static void test_##name(skiatest::Reporter*, \
- const sk_gpu_test::ContextInfo& context_info); \
- static void test_gpu_contexts_##name(skiatest::Reporter* reporter, \
- sk_gpu_test::GrContextFactory* factory) { \
- skiatest::RunWithGPUTestContexts(test_##name, context_filter, reporter, factory); \
- } \
- skiatest::TestRegistry name##TestRegistry( \
- skiatest::Test(#name, true, test_gpu_contexts_##name)); \
- void test_##name(skiatest::Reporter* reporter, \
+#define DEF_GPUTEST_FOR_CONTEXTS(name, context_filter, reporter, context_info, options_filter) \
+ static void test_##name(skiatest::Reporter*, \
+ const sk_gpu_test::ContextInfo& context_info); \
+ static void test_gpu_contexts_##name(skiatest::Reporter* reporter, \
+ sk_gpu_test::GrContextFactory* factory) { \
+ skiatest::RunWithGPUTestContexts(test_##name, context_filter, reporter, factory); \
+ } \
+ skiatest::TestRegistry name##TestRegistry( \
+ skiatest::Test(#name, true, test_gpu_contexts_##name, options_filter)); \
+ void test_##name(skiatest::Reporter* reporter, \
const sk_gpu_test::ContextInfo& context_info)
#define DEF_GPUTEST_FOR_ALL_CONTEXTS(name, reporter, context_info) \
- DEF_GPUTEST_FOR_CONTEXTS(name, nullptr, reporter, context_info)
+ DEF_GPUTEST_FOR_CONTEXTS(name, nullptr, reporter, context_info, nullptr)
+
#define DEF_GPUTEST_FOR_RENDERING_CONTEXTS(name, reporter, context_info) \
DEF_GPUTEST_FOR_CONTEXTS(name, sk_gpu_test::GrContextFactory::IsRenderingContext, \
- reporter, context_info)
+ reporter, context_info, nullptr)
#define DEF_GPUTEST_FOR_ALL_GL_CONTEXTS(name, reporter, context_info) \
- DEF_GPUTEST_FOR_CONTEXTS(name, &skiatest::IsGLContextType, reporter, context_info)
+ DEF_GPUTEST_FOR_CONTEXTS(name, &skiatest::IsGLContextType, \
+ reporter, context_info, nullptr)
#define DEF_GPUTEST_FOR_GL_RENDERING_CONTEXTS(name, reporter, context_info) \
- DEF_GPUTEST_FOR_CONTEXTS(name, &skiatest::IsRenderingGLContextType, reporter, context_info)
+ DEF_GPUTEST_FOR_CONTEXTS(name, &skiatest::IsRenderingGLContextType, \
+ reporter, context_info, nullptr)
#define DEF_GPUTEST_FOR_NULLGL_CONTEXT(name, reporter, context_info) \
- DEF_GPUTEST_FOR_CONTEXTS(name, &skiatest::IsNullGLContextType, reporter, context_info)
+ DEF_GPUTEST_FOR_CONTEXTS(name, &skiatest::IsNullGLContextType, \
+ reporter, context_info, nullptr)
#define DEF_GPUTEST_FOR_VULKAN_CONTEXT(name, reporter, context_info) \
- DEF_GPUTEST_FOR_CONTEXTS(name, &skiatest::IsVulkanContextType, reporter, context_info)
+ DEF_GPUTEST_FOR_CONTEXTS(name, &skiatest::IsVulkanContextType, \
+ reporter, context_info, nullptr)
#define REQUIRE_PDF_DOCUMENT(TEST_NAME, REPORTER) \
do { \