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skia2/tests/GrCCPRTest.cpp
Chris Dalton d6fa45472c ccpr: Rework the path cache to support sporadic flushing 
Removes the notion of a stashed atlas that we store from the previous
flush. Now we just cache every atlas we ever render. Cached atlases
can either be 16-bit or 8-bit.

The "reuse" and "animation" cases should both behave exactly the same
as before: Where before we would copy from the stashed atlas to 8-bit
atlases, we now copy from a cached 16-bit atlas and then invalidate
it. Where before we would recycle the stashed atlas's backing texture
object, we now recycle this same texture object from an invalidated
16-bit cached atlas.

The main difference is that cases like tiled rendering now work. If
you draw your whole scene in one flush, you still get one big 16-bit
cached atlas, just like the "stashed atlas" implementation. But if you
draw your scene in tiles, you now get lots of little cached 16-bit
atlases, which can be reused and eventually copied to 8-bit atlases.

Bug: skia:8462
Change-Id: Ibae65febb948230aaaf1f1361eef9c8f06ebef18
Reviewed-on: https://skia-review.googlesource.com/c/179991
Commit-Queue: Chris Dalton <csmartdalton@google.com>
Reviewed-by: Robert Phillips <robertphillips@google.com>
2019-01-04 20:51:09 +00:00

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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 "SkExchange.h"
#include "SkMatrix.h"
#include "SkPathPriv.h"
#include "SkRect.h"
#include "sk_tool_utils.h"
#include "ccpr/GrCoverageCountingPathRenderer.h"
#include "ccpr/GrCCPathCache.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(sk_sp<GrContext> ctx, skiatest::Reporter* reporter, bool doStroke)
: fCtx(ctx)
, fCCPR(fCtx->contextPriv().drawingManager()->getCoverageCountingPathRenderer())
, fRTC(fCtx->contextPriv().makeDeferredRenderTargetContext(
ctx->contextPriv().caps()->getBackendFormatFromColorType(kRGBA_8888_SkColorType),
SkBackingFit::kExact, kCanvasSize, kCanvasSize, kRGBA_8888_GrPixelConfig,
nullptr))
, fDoStroke(doStroke) {
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.get(); }
GrCoverageCountingPathRenderer* ccpr() const { return fCCPR; }
bool valid() const { return fCCPR && fRTC; }
void clear() const { fRTC->clear(nullptr, SK_PMColor4fTRANSPARENT,
GrRenderTargetContext::CanClearFullscreen::kYes); }
void destroyGrContext() {
SkASSERT(fRTC->unique());
SkASSERT(fCtx->unique());
fRTC.reset();
fCCPR = nullptr;
fCtx.reset();
}
void drawPath(const SkPath& path, const SkMatrix& matrix = SkMatrix::I()) const {
SkASSERT(this->valid());
GrPaint paint;
paint.setColor4f({ 0, 1, 0, 1 });
GrNoClip noClip;
SkIRect clipBounds = SkIRect::MakeWH(kCanvasSize, kCanvasSize);
GrShape shape;
if (!fDoStroke) {
shape = GrShape(path);
} else {
// Use hairlines for now, since they are the only stroke type that doesn't require a
// rigid-body transform. The CCPR stroke code makes no distinction between hairlines
// and regular strokes other than how it decides the device-space stroke width.
SkStrokeRec stroke(SkStrokeRec::kHairline_InitStyle);
stroke.setStrokeParams(SkPaint::kRound_Cap, SkPaint::kMiter_Join, 4);
shape = GrShape(path, GrStyle(stroke, nullptr));
}
fCCPR->testingOnly_drawPathDirectly({
fCtx.get(), std::move(paint), &GrUserStencilSettings::kUnused, fRTC.get(), &noClip,
&clipBounds, &matrix, &shape, GrAAType::kCoverage, false});
}
void clipFullscreenRect(SkPath clipPath, SkPMColor4f color = { 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:
sk_sp<GrContext> fCtx;
GrCoverageCountingPathRenderer* fCCPR;
sk_sp<GrRenderTargetContext> fRTC;
const bool fDoStroke;
};
class CCPRTest {
public:
void run(skiatest::Reporter* reporter, bool doStroke) {
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);
sk_sp<GrContext> mockContext = GrContext::MakeMock(&mockOptions, ctxOptions);
if (!mockContext) {
ERRORF(reporter, "could not create mock context");
return;
}
if (!mockContext->unique()) {
ERRORF(reporter, "mock context is not unique");
return;
}
CCPRPathDrawer ccpr(skstd::exchange(mockContext, nullptr), reporter, doStroke);
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;
SkPath fPath;
};
#define DEF_CCPR_TEST(name) \
DEF_GPUTEST(name, reporter, /* options */) { \
name test; \
test.run(reporter, false); \
test.run(reporter, true); \
}
class CCPR_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);
}
REPORTER_ASSERT(reporter, !SkPathPriv::TestingOnly_unique(fPath));
ccpr.destroyGrContext();
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
}
};
DEF_CCPR_TEST(CCPR_cleanup)
class CCPR_cleanupWithTexAllocFail : public CCPR_cleanup {
void customizeOptions(GrMockOptions* mockOptions, GrContextOptions*) override {
mockOptions->fFailTextureAllocations = true;
}
};
DEF_CCPR_TEST(CCPR_cleanupWithTexAllocFail)
class CCPR_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.destroyGrContext(); // Should not crash (DrawPathsOp should have unregistered itself).
}
};
DEF_CCPR_TEST(CCPR_unregisterCulledOps)
class CCPR_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(CCPR_parseEmptyPath)
static int get_mock_texture_id(const GrTexture* texture) {
const GrBackendTexture& backingTexture = texture->getBackendTexture();
SkASSERT(GrBackendApi::kMock == backingTexture.backend());
if (!backingTexture.isValid()) {
return 0;
}
GrMockTextureInfo info;
backingTexture.getMockTextureInfo(&info);
return info.fID;
}
// Base class for cache path unit tests.
class CCPRCacheTest : public CCPRTest {
protected:
// Registers as an onFlush callback in order to snag the CCPR per-flush resources and note the
// texture IDs.
class RecordLastMockAtlasIDs : public GrOnFlushCallbackObject {
public:
RecordLastMockAtlasIDs(sk_sp<GrCoverageCountingPathRenderer> ccpr) : fCCPR(ccpr) {}
int lastCopyAtlasID() const { return fLastCopyAtlasID; }
int lastRenderedAtlasID() const { return fLastRenderedAtlasID; }
void preFlush(GrOnFlushResourceProvider*, const uint32_t* opListIDs, int numOpListIDs,
SkTArray<sk_sp<GrRenderTargetContext>>* out) override {
fLastRenderedAtlasID = fLastCopyAtlasID = 0;
const GrCCPerFlushResources* resources = fCCPR->testingOnly_getCurrentFlushResources();
if (!resources) {
return;
}
if (const GrTexture* tex = resources->testingOnly_frontCopyAtlasTexture()) {
fLastCopyAtlasID = get_mock_texture_id(tex);
}
if (const GrTexture* tex = resources->testingOnly_frontRenderedAtlasTexture()) {
fLastRenderedAtlasID = get_mock_texture_id(tex);
}
}
void postFlush(GrDeferredUploadToken, const uint32_t*, int) override {}
private:
sk_sp<GrCoverageCountingPathRenderer> fCCPR;
int fLastCopyAtlasID = 0;
int fLastRenderedAtlasID = 0;
};
CCPRCacheTest() {
static constexpr int primes[11] = {2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31};
SkRandom rand;
for (size_t i = 0; i < SK_ARRAY_COUNT(fPaths); ++i) {
int numPts = rand.nextRangeU(GrShape::kMaxKeyFromDataVerbCnt + 1,
GrShape::kMaxKeyFromDataVerbCnt * 2);
int step;
do {
step = primes[rand.nextU() % SK_ARRAY_COUNT(primes)];
} while (step == numPts);
fPaths[i] = sk_tool_utils::make_star(SkRect::MakeLTRB(0,0,1,1), numPts, step);
}
}
void drawPathsAndFlush(CCPRPathDrawer& ccpr, const SkMatrix& m) {
this->drawPathsAndFlush(ccpr, &m, 1);
}
void drawPathsAndFlush(CCPRPathDrawer& ccpr, const SkMatrix* matrices, int numMatrices) {
// Draw all the paths.
for (size_t i = 0; i < SK_ARRAY_COUNT(fPaths); ++i) {
ccpr.drawPath(fPaths[i], matrices[i % numMatrices]);
}
// Re-draw a few paths, to test the case where a cache entry is hit more than once in a
// single flush.
SkRandom rand;
int duplicateIndices[10];
for (size_t i = 0; i < SK_ARRAY_COUNT(duplicateIndices); ++i) {
duplicateIndices[i] = rand.nextULessThan(SK_ARRAY_COUNT(fPaths));
}
for (size_t i = 0; i < SK_ARRAY_COUNT(duplicateIndices); ++i) {
for (size_t j = 0; j <= i; ++j) {
int idx = duplicateIndices[j];
ccpr.drawPath(fPaths[idx], matrices[idx % numMatrices]);
}
}
ccpr.flush();
}
private:
void customizeOptions(GrMockOptions*, GrContextOptions* ctxOptions) override {
ctxOptions->fAllowPathMaskCaching = true;
}
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr) final {
RecordLastMockAtlasIDs atlasIDRecorder(sk_ref_sp(ccpr.ccpr()));
ccpr.ctx()->contextPriv().addOnFlushCallbackObject(&atlasIDRecorder);
this->onRun(reporter, ccpr, atlasIDRecorder);
ccpr.ctx()->contextPriv().testingOnly_flushAndRemoveOnFlushCallbackObject(&atlasIDRecorder);
}
virtual void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr,
const RecordLastMockAtlasIDs&) = 0;
protected:
SkPath fPaths[350];
};
// Ensures ccpr always reuses the same atlas texture in the animation use case.
class CCPR_cache_animationAtlasReuse : public CCPRCacheTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr,
const RecordLastMockAtlasIDs& atlasIDRecorder) override {
SkMatrix m = SkMatrix::MakeTrans(kCanvasSize/2, kCanvasSize/2);
m.preScale(80, 80);
m.preTranslate(-.5,-.5);
this->drawPathsAndFlush(ccpr, m);
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastRenderedAtlasID());
const int atlasID = atlasIDRecorder.lastRenderedAtlasID();
// Ensures we always reuse the same atlas texture in the animation use case.
for (int i = 0; i < 12; ++i) {
// 59 is prime, so we will hit every integer modulo 360 before repeating.
m.preRotate(59, .5, .5);
// Go twice. Paths have to get drawn twice with the same matrix before we cache their
// atlas. This makes sure that on the subsequent draw, after an atlas has been cached
// and is then invalidated since the matrix will change, that the same underlying
// texture object is still reused for the next atlas.
for (int j = 0; j < 2; ++j) {
this->drawPathsAndFlush(ccpr, m);
// Nothing should be copied to an 8-bit atlas after just two draws.
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, atlasIDRecorder.lastRenderedAtlasID() == atlasID);
}
}
// Do the last draw again. (On draw 3 they should get copied to an 8-bit atlas.)
this->drawPathsAndFlush(ccpr, m);
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
// Now double-check that everything continues to hit the cache as expected when the matrix
// doesn't change.
for (int i = 0; i < 10; ++i) {
this->drawPathsAndFlush(ccpr, m);
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
}
}
};
DEF_CCPR_TEST(CCPR_cache_animationAtlasReuse)
class CCPR_cache_recycleEntries : public CCPRCacheTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr,
const RecordLastMockAtlasIDs& atlasIDRecorder) override {
SkMatrix m = SkMatrix::MakeTrans(kCanvasSize/2, kCanvasSize/2);
m.preScale(80, 80);
m.preTranslate(-.5,-.5);
auto cache = ccpr.ccpr()->testingOnly_getPathCache();
REPORTER_ASSERT(reporter, cache);
const auto& lru = cache->testingOnly_getLRU();
SkTArray<const void*> expectedPtrs;
// Ensures we always reuse the same atlas texture in the animation use case.
for (int i = 0; i < 5; ++i) {
// 59 is prime, so we will hit every integer modulo 360 before repeating.
m.preRotate(59, .5, .5);
// Go twice. Paths have to get drawn twice with the same matrix before we cache their
// atlas.
for (int j = 0; j < 2; ++j) {
this->drawPathsAndFlush(ccpr, m);
// Nothing should be copied to an 8-bit atlas after just two draws.
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastRenderedAtlasID());
}
int idx = 0;
for (const GrCCPathCacheEntry* entry : lru) {
if (0 == i) {
expectedPtrs.push_back(entry);
} else {
// The same pointer should have been recycled for the new matrix.
REPORTER_ASSERT(reporter, entry == expectedPtrs[idx]);
}
++idx;
}
}
}
};
DEF_CCPR_TEST(CCPR_cache_recycleEntries)
// Ensures mostly-visible paths get their full mask cached.
class CCPR_cache_mostlyVisible : public CCPRCacheTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr,
const RecordLastMockAtlasIDs& atlasIDRecorder) override {
SkMatrix matrices[3] = {
SkMatrix::MakeScale(kCanvasSize/2, kCanvasSize/2), // Fully visible.
SkMatrix::MakeScale(kCanvasSize * 1.25, kCanvasSize * 1.25), // Mostly visible.
SkMatrix::MakeScale(kCanvasSize * 1.5, kCanvasSize * 1.5), // Mostly NOT visible.
};
for (int i = 0; i < 10; ++i) {
this->drawPathsAndFlush(ccpr, matrices, 3);
if (2 == i) {
// The mostly-visible paths should still get cached.
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastCopyAtlasID());
} else {
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
}
// Ensure mostly NOT-visible paths never get cached.
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastRenderedAtlasID());
}
// Clear the path cache.
this->drawPathsAndFlush(ccpr, SkMatrix::I());
// Now only draw the fully/mostly visible ones.
for (int i = 0; i < 2; ++i) {
this->drawPathsAndFlush(ccpr, matrices, 2);
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastRenderedAtlasID());
}
// On draw 3 they should get copied to an 8-bit atlas.
this->drawPathsAndFlush(ccpr, matrices, 2);
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
for (int i = 0; i < 10; ++i) {
this->drawPathsAndFlush(ccpr, matrices, 2);
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
}
// Draw a different part of the path to ensure the full mask was cached.
matrices[1].postTranslate(SkScalarFloorToInt(kCanvasSize * -.25f),
SkScalarFloorToInt(kCanvasSize * -.25f));
for (int i = 0; i < 10; ++i) {
this->drawPathsAndFlush(ccpr, matrices, 2);
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
}
}
};
DEF_CCPR_TEST(CCPR_cache_mostlyVisible)
// Ensures GrContext::performDeferredCleanup works.
class CCPR_cache_deferredCleanup : public CCPRCacheTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr,
const RecordLastMockAtlasIDs& atlasIDRecorder) override {
SkMatrix m = SkMatrix::MakeScale(20, 20);
int lastRenderedAtlasID = 0;
for (int i = 0; i < 5; ++i) {
this->drawPathsAndFlush(ccpr, m);
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastRenderedAtlasID());
int renderedAtlasID = atlasIDRecorder.lastRenderedAtlasID();
REPORTER_ASSERT(reporter, renderedAtlasID != lastRenderedAtlasID);
lastRenderedAtlasID = renderedAtlasID;
this->drawPathsAndFlush(ccpr, m);
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, lastRenderedAtlasID == atlasIDRecorder.lastRenderedAtlasID());
// On draw 3 they should get copied to an 8-bit atlas.
this->drawPathsAndFlush(ccpr, m);
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
for (int i = 0; i < 10; ++i) {
this->drawPathsAndFlush(ccpr, m);
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
}
ccpr.ctx()->performDeferredCleanup(std::chrono::milliseconds(0));
}
}
};
DEF_CCPR_TEST(CCPR_cache_deferredCleanup)
// Verifies the cache/hash table internals.
class CCPR_cache_hashTable : public CCPRCacheTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr,
const RecordLastMockAtlasIDs& atlasIDRecorder) override {
using CoverageType = GrCCAtlas::CoverageType;
SkMatrix m = SkMatrix::MakeScale(20, 20);
for (int i = 0; i < 5; ++i) {
this->drawPathsAndFlush(ccpr, m);
if (2 == i) {
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastCopyAtlasID());
} else {
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
}
if (i < 2) {
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastRenderedAtlasID());
} else {
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
}
auto cache = ccpr.ccpr()->testingOnly_getPathCache();
REPORTER_ASSERT(reporter, cache);
const auto& hash = cache->testingOnly_getHashTable();
const auto& lru = cache->testingOnly_getLRU();
int count = 0;
for (GrCCPathCacheEntry* entry : lru) {
auto* node = hash.find(entry->cacheKey());
REPORTER_ASSERT(reporter, node);
REPORTER_ASSERT(reporter, node->entry() == entry);
REPORTER_ASSERT(reporter, 0 == entry->testingOnly_peekOnFlushRefCnt());
if (0 == i) {
REPORTER_ASSERT(reporter, !entry->cachedAtlas());
} else {
const GrCCCachedAtlas* cachedAtlas = entry->cachedAtlas();
REPORTER_ASSERT(reporter, cachedAtlas);
if (1 == i) {
REPORTER_ASSERT(reporter, CoverageType::kFP16_CoverageCount
== cachedAtlas->coverageType());
} else {
REPORTER_ASSERT(reporter, CoverageType::kA8_LiteralCoverage
== cachedAtlas->coverageType());
}
REPORTER_ASSERT(reporter, cachedAtlas->textureKey().isValid());
// The actual proxy should not be held past the end of a flush.
REPORTER_ASSERT(reporter, !cachedAtlas->getOnFlushProxy());
REPORTER_ASSERT(reporter, 0 == cachedAtlas->testingOnly_peekOnFlushRefCnt());
}
++count;
}
REPORTER_ASSERT(reporter, hash.count() == count);
}
}
};
DEF_CCPR_TEST(CCPR_cache_hashTable)
// Ensures paths get cached even when using a sporadic flushing pattern and drawing out of order
// (a la Chrome tiles).
class CCPR_cache_multiFlush : public CCPRCacheTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr,
const RecordLastMockAtlasIDs& atlasIDRecorder) override {
static constexpr int kNumPaths = SK_ARRAY_COUNT(fPaths);
static constexpr int kBigPrimes[] = {
9323, 11059, 22993, 38749, 45127, 53147, 64853, 77969, 83269, 99989};
SkRandom rand;
SkMatrix m = SkMatrix::I();
for (size_t i = 0; i < SK_ARRAY_COUNT(kBigPrimes); ++i) {
int prime = kBigPrimes[i];
int endPathIdx = (int)rand.nextULessThan(kNumPaths);
int pathIdx = endPathIdx;
int nextFlush = rand.nextRangeU(1, 47);
for (int j = 0; j < kNumPaths; ++j) {
pathIdx = (pathIdx + prime) % kNumPaths;
int repeat = rand.nextRangeU(1, 3);
for (int k = 0; k < repeat; ++k) {
ccpr.drawPath(fPaths[pathIdx], m);
}
if (nextFlush == j) {
ccpr.flush();
// The paths are small enough that we should never copy to an A8 atlas.
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
if (i < 2) {
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastRenderedAtlasID());
} else {
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
}
nextFlush = SkTMin(j + (int)rand.nextRangeU(1, 29), kNumPaths - 1);
}
}
SkASSERT(endPathIdx == pathIdx % kNumPaths);
}
}
};
DEF_CCPR_TEST(CCPR_cache_multiFlush)
// 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 CCPR_cache_partialInvalidate : public CCPRCacheTest {
void customizeOptions(GrMockOptions*, GrContextOptions* ctxOptions) override {
ctxOptions->fAllowPathMaskCaching = true;
}
static constexpr int kPathSize = 4;
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr,
const RecordLastMockAtlasIDs& atlasIDRecorder) override {
SkMatrix matrices[2] = {
SkMatrix::MakeTrans(5, 5),
SkMatrix::MakeTrans(kCanvasSize - kPathSize - 5, kCanvasSize - kPathSize - 5)
};
matrices[0].preScale(kPathSize, kPathSize);
matrices[1].preScale(kPathSize, kPathSize);
int firstAtlasID = 0;
for (int iterIdx = 0; iterIdx < 4*3*2; ++iterIdx) {
this->drawPathsAndFlush(ccpr, matrices, 2);
if (0 == iterIdx) {
// First iteration: just note the ID of the stashed atlas and continue.
firstAtlasID = atlasIDRecorder.lastRenderedAtlasID();
REPORTER_ASSERT(reporter, 0 != firstAtlasID);
continue;
}
int testIdx = (iterIdx/2) % 3;
int repetitionIdx = iterIdx % 2;
switch (testIdx) {
case 0:
if (0 == repetitionIdx) {
// This is the big test. New paths were drawn twice last round. On hit 2
// (last time), 'firstAtlasID' was cached as a 16-bit atlas. Now, on hit 3,
// these paths should be copied out of 'firstAtlasID', and into an A8 atlas.
// THEN: we should recycle 'firstAtlasID' and reuse that same texture to
// render the new masks.
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastCopyAtlasID());
REPORTER_ASSERT(reporter,
atlasIDRecorder.lastRenderedAtlasID() == firstAtlasID);
} else {
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
// This is hit 2 for the new masks. Next time they will be copied to an A8
// atlas.
REPORTER_ASSERT(reporter,
atlasIDRecorder.lastRenderedAtlasID() == firstAtlasID);
}
if (1 == repetitionIdx) {
// Integer translates: all path masks stay valid.
matrices[0].preTranslate(-1, -1);
matrices[1].preTranslate(1, 1);
}
break;
case 1:
if (0 == repetitionIdx) {
// New paths were drawn twice last round. The third hit (now) they should be
// copied to an A8 atlas.
REPORTER_ASSERT(reporter, 0 != atlasIDRecorder.lastCopyAtlasID());
} else {
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
}
// This draw should have gotten 100% cache hits; we only did integer translates
// last time (or none if it was the first flush). Therefore, everything should
// have been cached.
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastRenderedAtlasID());
if (1 == repetitionIdx) {
// Invalidate even path masks.
matrices[0].preTranslate(1.6f, 1.4f);
}
break;
case 2:
// No new masks to copy from last time; it had 100% cache hits.
REPORTER_ASSERT(reporter, 0 == atlasIDRecorder.lastCopyAtlasID());
// Even path masks were invalidated last iteration by a subpixel translate.
// They should have been re-rendered this time in the original 'firstAtlasID'
// texture.
REPORTER_ASSERT(reporter,
atlasIDRecorder.lastRenderedAtlasID() == firstAtlasID);
if (1 == repetitionIdx) {
// Invalidate odd path masks.
matrices[1].preTranslate(-1.4f, -1.6f);
}
break;
}
}
}
};
DEF_CCPR_TEST(CCPR_cache_partialInvalidate)
class CCPR_unrefPerOpListPathsBeforeOps : public CCPRTest {
void onRun(skiatest::Reporter* reporter, CCPRPathDrawer& ccpr) override {
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
for (int i = 0; i < 10000; ++i) {
// Draw enough paths to make the arena allocator hit the heap.
ccpr.drawPath(fPath);
}
// Unref the GrCCPerOpListPaths object.
auto perOpListPathsMap = ccpr.ccpr()->detachPendingPaths();
perOpListPathsMap.clear();
// Now delete the Op and all its draws.
REPORTER_ASSERT(reporter, !SkPathPriv::TestingOnly_unique(fPath));
ccpr.flush();
REPORTER_ASSERT(reporter, SkPathPriv::TestingOnly_unique(fPath));
}
};
DEF_CCPR_TEST(CCPR_unrefPerOpListPathsBeforeOps)
class CCPRRenderingTest {
public:
void run(skiatest::Reporter* reporter, GrContext* ctx, bool doStroke) const {
if (!ctx->contextPriv().drawingManager()->getCoverageCountingPathRenderer()) {
return; // CCPR is not enabled on this GPU.
}
CCPRPathDrawer ccpr(sk_ref_sp(ctx), reporter, doStroke);
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(), false); \
test.run(reporter, ctxInfo.grContext(), true); \
}
class CCPR_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(CCPR_busyPath)
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