skia2/tests/GrCCPRTest.cpp

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/*
* 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 "SkTypes.h"
#include "Test.h"
#include "GrContext.h"
#include "GrContextPriv.h"
#include "GrClip.h"
#include "GrDrawingManager.h"
#include "GrPathRenderer.h"
#include "GrPaint.h"
#include "GrRenderTargetContext.h"
#include "GrRenderTargetContextPriv.h"
#include "GrShape.h"
#include "GrTexture.h"
#include "SkMatrix.h"
#include "SkPathPriv.h"
#include "SkRect.h"
#include "sk_tool_utils.h"
#include "ccpr/GrCoverageCountingPathRenderer.h"
#include "mock/GrMockTypes.h"
#include <cmath>
static constexpr int kCanvasSize = 100;
class CCPRClip : public GrClip {
public:
CCPRClip(GrCoverageCountingPathRenderer* ccpr, const SkPath& path) : fCCPR(ccpr), fPath(path) {}
private:
bool apply(GrContext* context, GrRenderTargetContext* rtc, bool, bool, GrAppliedClip* out,
SkRect* bounds) const override {
out->addCoverageFP(fCCPR->makeClipProcessor(rtc->priv().testingOnly_getOpListID(), fPath,
SkIRect::MakeWH(rtc->width(), rtc->height()),
rtc->width(), rtc->height(),
*context->contextPriv().caps()));
return true;
}
bool quickContains(const SkRect&) const final { return false; }
bool isRRect(const SkRect& rtBounds, SkRRect* rr, GrAA*) const final { return false; }
void getConservativeBounds(int width, int height, SkIRect* rect, bool* iior) const final {
rect->set(0, 0, width, height);
if (iior) {
*iior = false;
}
}
GrCoverageCountingPathRenderer* const fCCPR;
const SkPath fPath;
};
class CCPRPathDrawer {
public:
CCPRPathDrawer(GrContext* ctx, skiatest::Reporter* reporter)
: fCtx(ctx)
, fCCPR(fCtx->contextPriv().drawingManager()->getCoverageCountingPathRenderer())
, fRTC(fCtx->contextPriv().makeDeferredRenderTargetContext(
SkBackingFit::kExact, kCanvasSize,
kCanvasSize, kRGBA_8888_GrPixelConfig,
nullptr)) {
if (!fCCPR) {
ERRORF(reporter, "ccpr not enabled in GrContext for ccpr tests");
}
if (!fRTC) {
ERRORF(reporter, "failed to create GrRenderTargetContext for ccpr tests");
}
}
GrContext* ctx() const { return fCtx; }
GrCoverageCountingPathRenderer* ccpr() const { return fCCPR; }
bool valid() const { return fCCPR && fRTC; }
void clear() const { fRTC->clear(nullptr, 0, GrRenderTargetContext::CanClearFullscreen::kYes); }
void abandonGrContext() { fCtx = nullptr; fCCPR = nullptr; fRTC = nullptr; }
void drawPath(const SkPath& path, const SkMatrix& matrix = SkMatrix::I()) const {
SkASSERT(this->valid());
GrPaint paint;
paint.setColor4f(GrColor4f(0, 1, 0, 1));
GrNoClip noClip;
SkIRect clipBounds = SkIRect::MakeWH(kCanvasSize, kCanvasSize);
GrShape shape(path);
fCCPR->testingOnly_drawPathDirectly({
fCtx, std::move(paint), &GrUserStencilSettings::kUnused, fRTC.get(), &noClip,
&clipBounds, &matrix, &shape, GrAAType::kCoverage, false});
}
void clipFullscreenRect(SkPath clipPath, GrColor4f color = GrColor4f(0, 1, 0, 1)) {
SkASSERT(this->valid());
GrPaint paint;
paint.setColor4f(color);
fRTC->drawRect(CCPRClip(fCCPR, clipPath), std::move(paint), GrAA::kYes, SkMatrix::I(),
SkRect::MakeIWH(kCanvasSize, kCanvasSize));
}
void flush() const {
SkASSERT(this->valid());
fCtx->flush();
}
private:
GrContext* fCtx;
GrCoverageCountingPathRenderer* fCCPR;
sk_sp<GrRenderTargetContext> fRTC;
};
class CCPRTest {
public:
void run(skiatest::Reporter* reporter) {
GrMockOptions mockOptions;
mockOptions.fInstanceAttribSupport = true;
mockOptions.fMapBufferFlags = GrCaps::kCanMap_MapFlag;
mockOptions.fConfigOptions[kAlpha_half_GrPixelConfig].fRenderability =
GrMockOptions::ConfigOptions::Renderability::kNonMSAA;
mockOptions.fConfigOptions[kAlpha_half_GrPixelConfig].fTexturable = true;
mockOptions.fConfigOptions[kAlpha_8_GrPixelConfig].fRenderability =
GrMockOptions::ConfigOptions::Renderability::kNonMSAA;
mockOptions.fConfigOptions[kAlpha_8_GrPixelConfig].fTexturable = true;
mockOptions.fGeometryShaderSupport = true;
mockOptions.fIntegerSupport = true;
mockOptions.fFlatInterpolationSupport = true;
GrContextOptions ctxOptions;
ctxOptions.fAllowPathMaskCaching = false;
ctxOptions.fGpuPathRenderers = GpuPathRenderers::kCoverageCounting;
this->customizeOptions(&mockOptions, &ctxOptions);
fMockContext = GrContext::MakeMock(&mockOptions, ctxOptions);
if (!fMockContext) {
ERRORF(reporter, "could not create mock context");
return;
}
if (!fMockContext->unique()) {
ERRORF(reporter, "mock context is not unique");
return;
}
CCPRPathDrawer ccpr(fMockContext.get(), reporter);
if (!ccpr.valid()) {
return;
}
fPath.moveTo(0, 0);
fPath.cubicTo(50, 50, 0, 50, 50, 0);
this->onRun(reporter, ccpr);
}
virtual ~CCPRTest() {}
protected:
virtual void customizeOptions(GrMockOptions*, GrContextOptions*) {}
virtual void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr) = 0;
sk_sp<GrContext> fMockContext;
SkPath fPath;
};
#define DEF_CCPR_TEST(name) \
DEF_GPUTEST(name, reporter, /* options */) { \
name test; \
test.run(reporter); \
}
class GrCCPRTest_cleanup : public CCPRTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr) override {
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
// Ensure paths get unreffed.
for (int i = 0; i < 10; ++i) {
ccpr.drawPath(fPath);
}
REPORTER_ASSERT(reporter, !SkPathPriv::TestingOnly_unique(fPath));
ccpr.flush();
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
// Ensure clip paths get unreffed.
for (int i = 0; i < 10; ++i) {
ccpr.clipFullscreenRect(fPath);
}
REPORTER_ASSERT(reporter, !SkPathPriv::TestingOnly_unique(fPath));
ccpr.flush();
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
// Ensure paths get unreffed when we delete the context without flushing.
for (int i = 0; i < 10; ++i) {
ccpr.drawPath(fPath);
ccpr.clipFullscreenRect(fPath);
}
ccpr.abandonGrContext();
REPORTER_ASSERT(reporter, !SkPathPriv::TestingOnly_unique(fPath));
fMockContext.reset();
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
}
};
DEF_CCPR_TEST(GrCCPRTest_cleanup)
class GrCCPRTest_cleanupWithTexAllocFail : public GrCCPRTest_cleanup {
void customizeOptions(GrMockOptions* mockOptions, GrContextOptions*) override {
mockOptions->fFailTextureAllocations = true;
}
};
DEF_CCPR_TEST(GrCCPRTest_cleanupWithTexAllocFail)
class GrCCPRTest_unregisterCulledOps : public CCPRTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr) override {
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
// Ensure Ops get unregistered from CCPR when culled early.
ccpr.drawPath(fPath);
REPORTER_ASSERT(reporter, !SkPathPriv::TestingOnly_unique(fPath));
ccpr.clear(); // Clear should delete the CCPR Op.
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
ccpr.flush(); // Should not crash (DrawPathsOp should have unregistered itself).
// Ensure Op unregisters work when we delete the context without flushing.
ccpr.drawPath(fPath);
REPORTER_ASSERT(reporter, !SkPathPriv::TestingOnly_unique(fPath));
ccpr.clear(); // Clear should delete the CCPR DrawPathsOp.
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
ccpr.abandonGrContext();
fMockContext.reset(); // Should not crash (DrawPathsOp should have unregistered itself).
}
};
DEF_CCPR_TEST(GrCCPRTest_unregisterCulledOps)
class GrCCPRTest_parseEmptyPath : public CCPRTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr) override {
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
// Make a path large enough that ccpr chooses to crop it by the RT bounds, and ends up with
// an empty path.
SkPath largeOutsidePath;
largeOutsidePath.moveTo(-1e30f, -1e30f);
largeOutsidePath.lineTo(-1e30f, +1e30f);
largeOutsidePath.lineTo(-1e10f, +1e30f);
ccpr.drawPath(largeOutsidePath);
// Normally an empty path is culled before reaching ccpr, however we use a back door for
// testing so this path will make it.
SkPath emptyPath;
SkASSERT(emptyPath.isEmpty());
ccpr.drawPath(emptyPath);
// This is the test. It will exercise various internal asserts and verify we do not crash.
ccpr.flush();
// Now try again with clips.
ccpr.clipFullscreenRect(largeOutsidePath);
ccpr.clipFullscreenRect(emptyPath);
ccpr.flush();
// ... and both.
ccpr.drawPath(largeOutsidePath);
ccpr.clipFullscreenRect(largeOutsidePath);
ccpr.drawPath(emptyPath);
ccpr.clipFullscreenRect(emptyPath);
ccpr.flush();
}
};
DEF_CCPR_TEST(GrCCPRTest_parseEmptyPath)
// This test exercises CCPR's cache capabilities by drawing many paths with two different
// transformation matrices. We then vary the matrices independently by whole and partial pixels,
// and verify the caching behaved as expected.
class GrCCPRTest_cache : public CCPRTest {
void customizeOptions(GrMockOptions*, GrContextOptions* ctxOptions) override {
ctxOptions->fAllowPathMaskCaching = true;
}
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr) override {
static constexpr int kPathSize = 20;
SkRandom rand;
SkPath paths[300];
int primes[11] = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31};
for (size_t i = 0; i < SK_ARRAY_COUNT(paths); ++i) {
int numPts = rand.nextRangeU(GrShape::kMaxKeyFromDataVerbCnt + 1,
GrShape::kMaxKeyFromDataVerbCnt * 2);
paths[i] = sk_tool_utils::make_star(SkRect::MakeIWH(kPathSize, kPathSize), numPts,
primes[rand.nextU() % SK_ARRAY_COUNT(primes)]);
}
SkMatrix matrices[2] = {
SkMatrix::MakeTrans(5, 5),
SkMatrix::MakeTrans(kCanvasSize - kPathSize - 5, kCanvasSize - kPathSize - 5)
};
int firstAtlasID = -1;
for (int iterIdx = 0; iterIdx < 10; ++iterIdx) {
static constexpr int kNumHitsBeforeStash = 2;
static const GrUniqueKey gInvalidUniqueKey;
// Draw all the paths then flush. Repeat until a new stash occurs.
const GrUniqueKey* stashedAtlasKey = &gInvalidUniqueKey;
for (int j = 0; j < kNumHitsBeforeStash; ++j) {
// Nothing should be stashed until its hit count reaches kNumHitsBeforeStash.
REPORTER_ASSERT(reporter, !stashedAtlasKey->isValid());
for (size_t i = 0; i < SK_ARRAY_COUNT(paths); ++i) {
ccpr.drawPath(paths[i], matrices[i % 2]);
}
ccpr.flush();
stashedAtlasKey = &ccpr.ccpr()->testingOnly_getStashedAtlasKey();
}
// Figure out the mock backend ID of the atlas texture stashed away by CCPR.
GrMockTextureInfo stashedAtlasInfo;
stashedAtlasInfo.fID = -1;
if (stashedAtlasKey->isValid()) {
GrResourceProvider* rp = ccpr.ctx()->contextPriv().resourceProvider();
sk_sp<GrSurface> stashedAtlas = rp->findByUniqueKey<GrSurface>(*stashedAtlasKey);
REPORTER_ASSERT(reporter, stashedAtlas);
if (stashedAtlas) {
const auto& backendTexture = stashedAtlas->asTexture()->getBackendTexture();
backendTexture.getMockTextureInfo(&stashedAtlasInfo);
}
}
if (0 == iterIdx) {
// First iteration: just note the ID of the stashed atlas and continue.
REPORTER_ASSERT(reporter, stashedAtlasKey->isValid());
firstAtlasID = stashedAtlasInfo.fID;
continue;
}
switch (iterIdx % 3) {
case 1:
// This draw should have gotten 100% cache hits; we only did integer translates
// last time (or none if it was the first flush). Therefore, no atlas should
// have been stashed away.
REPORTER_ASSERT(reporter, !stashedAtlasKey->isValid());
// Invalidate even path masks.
matrices[0].preTranslate(1.6f, 1.4f);
break;
case 2:
// Even path masks were invalidated last iteration by a subpixel translate. They
// should have been re-rendered this time and stashed away in the CCPR atlas.
REPORTER_ASSERT(reporter, stashedAtlasKey->isValid());
// 'firstAtlasID' should be kept as a scratch texture in the resource cache.
REPORTER_ASSERT(reporter, stashedAtlasInfo.fID == firstAtlasID);
// Invalidate odd path masks.
matrices[1].preTranslate(-1.4f, -1.6f);
break;
case 0:
// Odd path masks were invalidated last iteration by a subpixel translate. They
// should have been re-rendered this time and stashed away in the CCPR atlas.
REPORTER_ASSERT(reporter, stashedAtlasKey->isValid());
// 'firstAtlasID' is the same texture that got stashed away last time (assuming
// no assertion failures). So if it also got stashed this time, it means we
// first copied the even paths out of it, then recycled the exact same texture
// to render the odd paths. This is the expected behavior.
REPORTER_ASSERT(reporter, stashedAtlasInfo.fID == firstAtlasID);
// Integer translates: all path masks stay valid.
matrices[0].preTranslate(-1, -1);
matrices[1].preTranslate(1, 1);
break;
}
}
}
};
DEF_CCPR_TEST(GrCCPRTest_cache)
class CCPRRenderingTest {
public:
void run(skiatest::Reporter* reporter, GrContext* ctx) const {
if (!ctx->contextPriv().drawingManager()->getCoverageCountingPathRenderer()) {
return; // CCPR is not enabled on this GPU.
}
CCPRPathDrawer ccpr(ctx, reporter);
if (!ccpr.valid()) {
return;
}
this->onRun(reporter, ccpr);
}
virtual ~CCPRRenderingTest() {}
protected:
virtual void onRun(skiatest::Reporter* reporter, const CCPRPathDrawer& ccpr) const = 0;
};
#define DEF_CCPR_RENDERING_TEST(name) \
DEF_GPUTEST_FOR_RENDERING_CONTEXTS(name, reporter, ctxInfo) { \
name test; \
test.run(reporter, ctxInfo.grContext()); \
}
class GrCCPRTest_busyPath : public CCPRRenderingTest {
void onRun(skiatest::Reporter* reporter, const CCPRPathDrawer& ccpr) const override {
static constexpr int kNumBusyVerbs = 1 << 17;
ccpr.clear();
SkPath busyPath;
busyPath.moveTo(0, 0); // top left
busyPath.lineTo(kCanvasSize, kCanvasSize); // bottom right
for (int i = 2; i < kNumBusyVerbs; ++i) {
float offset = i * ((float)kCanvasSize / kNumBusyVerbs);
busyPath.lineTo(kCanvasSize - offset, kCanvasSize + offset); // offscreen
}
ccpr.drawPath(busyPath);
ccpr.flush(); // If this doesn't crash, the test passed.
// If it does, maybe fiddle with fMaxInstancesPerDrawArraysWithoutCrashing in
// your platform's GrGLCaps.
}
};
DEF_CCPR_RENDERING_TEST(GrCCPRTest_busyPath)