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Unified Diff: src/gpu/GrLayerCache.cpp

Issue 1950523002: Remove GrLayerHoister (Closed) Base URL: https://skia.googlesource.com/skia.git@master
Patch Set: Forgot to remove some files Created 4 years, 5 months ago
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Index: src/gpu/GrLayerCache.cpp
diff --git a/src/gpu/GrLayerCache.cpp b/src/gpu/GrLayerCache.cpp
deleted file mode 100644
index b14423aaa27fc313d82d3b81b4d6494ed197cae9..0000000000000000000000000000000000000000
--- a/src/gpu/GrLayerCache.cpp
+++ /dev/null
@@ -1,557 +0,0 @@
-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "GrLayerAtlas.h"
-#include "GrContext.h"
-#include "GrDrawContext.h"
-#include "GrGpu.h"
-#include "GrLayerCache.h"
-#include "GrSurfacePriv.h"
-
-#ifdef SK_DEBUG
-void GrCachedLayer::validate(const GrTexture* backingTexture) const {
- SkASSERT(SK_InvalidGenID != fKey.pictureID());
-
- if (fTexture) {
- // If the layer is in some texture then it must occupy some rectangle
- SkASSERT(!fRect.isEmpty());
- if (!this->isAtlased()) {
- // If it isn't atlased then the rectangle should start at the origin
- SkASSERT(0.0f == fRect.fLeft && 0.0f == fRect.fTop);
- }
- } else {
- SkASSERT(fRect.isEmpty());
- SkASSERT(nullptr == fPlot);
- SkASSERT(!fLocked); // layers without a texture cannot be locked
- SkASSERT(!fAtlased); // can't be atlased if it doesn't have a texture
- }
-
- if (fPlot) {
- SkASSERT(fAtlased);
- // If a layer has a plot (i.e., is atlased) then it must point to
- // the backing texture. Additionally, its rect should be non-empty.
- SkASSERT(fTexture && backingTexture == fTexture);
- SkASSERT(!fRect.isEmpty());
- }
-
- if (fLocked) {
- // If a layer is locked it must have a texture (though it need not be
- // the atlas-backing texture) and occupy some space.
- SkASSERT(fTexture);
- SkASSERT(!fRect.isEmpty());
- }
-
- // Unfortunately there is a brief time where a layer can be locked
- // but not used, so we can only check the "used implies locked"
- // invariant.
- if (fUses > 0) {
- SkASSERT(fLocked);
- } else {
- SkASSERT(0 == fUses);
- }
-}
-
-class GrAutoValidateLayer : ::SkNoncopyable {
-public:
- GrAutoValidateLayer(GrTexture* backingTexture, const GrCachedLayer* layer)
- : fBackingTexture(backingTexture)
- , fLayer(layer) {
- if (fLayer) {
- fLayer->validate(backingTexture);
- }
- }
- ~GrAutoValidateLayer() {
- if (fLayer) {
- fLayer->validate(fBackingTexture);
- }
- }
- void setBackingTexture(GrTexture* backingTexture) {
- SkASSERT(nullptr == fBackingTexture || fBackingTexture == backingTexture);
- fBackingTexture = backingTexture;
- }
-
-private:
- const GrTexture* fBackingTexture;
- const GrCachedLayer* fLayer;
-};
-#endif
-
-GrLayerCache::GrLayerCache(GrContext* context)
- : fContext(context) {
- memset(fPlotLocks, 0, sizeof(fPlotLocks));
-}
-
-GrLayerCache::~GrLayerCache() {
-
- SkTDynamicHash<GrCachedLayer, GrCachedLayer::Key>::Iter iter(&fLayerHash);
- for (; !iter.done(); ++iter) {
- GrCachedLayer* layer = &(*iter);
- SkASSERT(0 == layer->uses());
- this->unlock(layer);
- delete layer;
- }
-
- SkASSERT(0 == fPictureHash.count());
-
- // The atlas only lets go of its texture when the atlas is deleted.
- fAtlas.reset();
-}
-
-void GrLayerCache::initAtlas() {
- SkASSERT(nullptr == fAtlas.get());
- GR_STATIC_ASSERT(kNumPlotsX*kNumPlotsX == GrPictureInfo::kNumPlots);
-
- SkISize textureSize = SkISize::Make(kAtlasTextureWidth, kAtlasTextureHeight);
- fAtlas.reset(new GrLayerAtlas(fContext->textureProvider(), kSkia8888_GrPixelConfig,
- kRenderTarget_GrSurfaceFlag, textureSize,
- kNumPlotsX, kNumPlotsY));
-}
-
-void GrLayerCache::freeAll() {
-
- SkTDynamicHash<GrCachedLayer, GrCachedLayer::Key>::Iter iter(&fLayerHash);
- for (; !iter.done(); ++iter) {
- GrCachedLayer* layer = &(*iter);
- this->unlock(layer);
- delete layer;
- }
- fLayerHash.rewind();
-
- if (fAtlas) {
- fAtlas->resetPlots();
- fAtlas->detachBackingTexture();
- }
-}
-
-GrCachedLayer* GrLayerCache::createLayer(uint32_t pictureID,
- int start, int stop,
- const SkIRect& srcIR,
- const SkIRect& dstIR,
- const SkMatrix& initialMat,
- const int* key,
- int keySize,
- const SkPaint* paint) {
- SkASSERT(pictureID != SK_InvalidGenID && start >= 0 && stop > 0);
-
- GrCachedLayer* layer = new GrCachedLayer(pictureID, start, stop, srcIR, dstIR, initialMat, key,
- keySize, paint);
- fLayerHash.add(layer);
- return layer;
-}
-
-GrCachedLayer* GrLayerCache::findLayer(uint32_t pictureID, const SkMatrix& initialMat,
- const int* key, int keySize) {
- SkASSERT(pictureID != SK_InvalidGenID);
- return fLayerHash.find(GrCachedLayer::Key(pictureID, initialMat, key, keySize));
-}
-
-GrCachedLayer* GrLayerCache::findLayerOrCreate(uint32_t pictureID,
- int start, int stop,
- const SkIRect& srcIR,
- const SkIRect& dstIR,
- const SkMatrix& initialMat,
- const int* key,
- int keySize,
- const SkPaint* paint) {
- SkASSERT(pictureID != SK_InvalidGenID && start >= 0 && stop > 0);
- GrCachedLayer* layer = fLayerHash.find(GrCachedLayer::Key(pictureID, initialMat, key, keySize));
- if (nullptr == layer) {
- layer = this->createLayer(pictureID, start, stop,
- srcIR, dstIR, initialMat,
- key, keySize, paint);
- }
-
- return layer;
-}
-
-bool GrLayerCache::tryToAtlas(GrCachedLayer* layer,
- const GrSurfaceDesc& desc,
- bool* needsRendering) {
- SkDEBUGCODE(GrAutoValidateLayer avl(fAtlas ? fAtlas->getTextureOrNull() : nullptr, layer);)
-
- SkASSERT(PlausiblyAtlasable(desc.fWidth, desc.fHeight));
- SkASSERT(0 == desc.fSampleCnt);
-
- if (layer->locked()) {
- // This layer is already locked
- SkASSERT(fAtlas);
- SkASSERT(layer->isAtlased());
- SkASSERT(layer->rect().width() == desc.fWidth);
- SkASSERT(layer->rect().height() == desc.fHeight);
- *needsRendering = false;
- return true;
- }
-
- if (layer->isAtlased()) {
- SkASSERT(fAtlas);
- // Hooray it is still in the atlas - make sure it stays there
- layer->setLocked(true);
- this->incPlotLock(layer->plot()->id());
- *needsRendering = false;
- return true;
- } else {
- if (!fAtlas) {
- this->initAtlas();
- if (!fAtlas) {
- return false;
- }
- }
- // Not in the atlas - will it fit?
- GrPictureInfo* pictInfo = fPictureHash.find(layer->pictureID());
- if (nullptr == pictInfo) {
- pictInfo = new GrPictureInfo(layer->pictureID());
- fPictureHash.add(pictInfo);
- }
-
- SkIPoint16 loc;
- for (int i = 0; i < 2; ++i) { // extra pass in case we fail to add but are able to purge
- GrLayerAtlas::Plot* plot = fAtlas->addToAtlas(&pictInfo->fPlotUsage,
- desc.fWidth, desc.fHeight,
- &loc);
- // addToAtlas can allocate the backing texture
- SkDEBUGCODE(avl.setBackingTexture(fAtlas->getTexture()));
- if (plot) {
-#if !GR_CACHE_HOISTED_LAYERS
- pictInfo->incPlotUsage(plot->id());
-#endif
- // The layer was successfully added to the atlas
- const SkIRect bounds = SkIRect::MakeXYWH(loc.fX, loc.fY,
- desc.fWidth, desc.fHeight);
- layer->setTexture(fAtlas->getTexture(), bounds, true);
- layer->setPlot(plot);
- layer->setLocked(true);
- this->incPlotLock(layer->plot()->id());
- *needsRendering = true;
- return true;
- }
-
- // The layer was rejected by the atlas (even though we know it is
- // plausibly atlas-able). See if a plot can be purged and try again.
- if (!this->purgePlots(true)) {
- break; // We weren't able to purge any plots
- }
- }
-
- if (pictInfo->fPlotUsage.isEmpty()) {
- fPictureHash.remove(pictInfo->fPictureID);
- delete pictInfo;
- }
- }
-
- return false;
-}
-
-bool GrLayerCache::lock(GrCachedLayer* layer, const GrSurfaceDesc& desc, bool* needsRendering) {
- if (layer->locked()) {
- // This layer is already locked
- *needsRendering = false;
- return true;
- }
-
- // TODO: make the test for exact match depend on the image filters themselves
- SkAutoTUnref<GrTexture> tex;
- if (layer->fFilter) {
- tex.reset(fContext->textureProvider()->createTexture(desc, SkBudgeted::kYes));
- } else {
- tex.reset(fContext->textureProvider()->createApproxTexture(desc));
- }
-
- if (!tex) {
- return false;
- }
-
- layer->setTexture(tex, SkIRect::MakeWH(desc.fWidth, desc.fHeight), false);
- layer->setLocked(true);
- *needsRendering = true;
- return true;
-}
-
-void GrLayerCache::unlock(GrCachedLayer* layer) {
- SkDEBUGCODE(GrAutoValidateLayer avl(fAtlas ? fAtlas->getTextureOrNull() : nullptr, layer);)
-
- if (nullptr == layer || !layer->locked()) {
- // invalid or not locked
- return;
- }
-
- if (layer->isAtlased()) {
- const int plotID = layer->plot()->id();
-
- this->decPlotLock(plotID);
- // At this point we could aggressively clear out un-locked plots but
- // by delaying we may be able to reuse some of the atlased layers later.
-#if !GR_CACHE_HOISTED_LAYERS
- // This testing code aggressively removes the atlased layers. This
- // can be used to separate the performance contribution of less
- // render target pingponging from that due to the re-use of cached layers
- GrPictureInfo* pictInfo = fPictureHash.find(layer->pictureID());
- SkASSERT(pictInfo);
-
- pictInfo->decPlotUsage(plotID);
-
- if (0 == pictInfo->plotUsage(plotID)) {
- pictInfo->fPlotUsage.removePlot(layer->plot());
-
- if (pictInfo->fPlotUsage.isEmpty()) {
- fPictureHash.remove(pictInfo->fPictureID);
- delete pictInfo;
- }
- }
-
- layer->setPlot(nullptr);
- layer->setTexture(nullptr, SkIRect::MakeEmpty(), false);
-#endif
-
- } else {
- layer->setTexture(nullptr, SkIRect::MakeEmpty(), false);
- }
-
- layer->setLocked(false);
-}
-
-#ifdef SK_DEBUG
-void GrLayerCache::validate() const {
- int plotLocks[kNumPlotsX * kNumPlotsY];
- memset(plotLocks, 0, sizeof(plotLocks));
-
- SkTDynamicHash<GrCachedLayer, GrCachedLayer::Key>::ConstIter iter(&fLayerHash);
- for (; !iter.done(); ++iter) {
- const GrCachedLayer* layer = &(*iter);
-
- layer->validate(fAtlas.get() ? fAtlas->getTextureOrNull() : nullptr);
-
- const GrPictureInfo* pictInfo = fPictureHash.find(layer->pictureID());
- if (!pictInfo) {
- // If there is no picture info for this picture then all of its
- // layers should be non-atlased.
- SkASSERT(!layer->isAtlased());
- }
-
- if (layer->plot()) {
- SkASSERT(pictInfo);
- SkASSERT(pictInfo->fPictureID == layer->pictureID());
-
- SkASSERT(pictInfo->fPlotUsage.contains(layer->plot()));
-#if !GR_CACHE_HOISTED_LAYERS
- SkASSERT(pictInfo->plotUsage(layer->plot()->id()) > 0);
-#endif
-
- if (layer->locked()) {
- plotLocks[layer->plot()->id()]++;
- }
- }
- }
-
- for (int i = 0; i < kNumPlotsX*kNumPlotsY; ++i) {
- SkASSERT(plotLocks[i] == fPlotLocks[i]);
- }
-}
-
-class GrAutoValidateCache : ::SkNoncopyable {
-public:
- explicit GrAutoValidateCache(GrLayerCache* cache)
- : fCache(cache) {
- fCache->validate();
- }
- ~GrAutoValidateCache() {
- fCache->validate();
- }
-private:
- GrLayerCache* fCache;
-};
-#endif
-
-void GrLayerCache::purge(uint32_t pictureID) {
-
- SkDEBUGCODE(GrAutoValidateCache avc(this);)
-
- // We need to find all the layers associated with 'picture' and remove them.
- SkTDArray<GrCachedLayer*> toBeRemoved;
-
- SkTDynamicHash<GrCachedLayer, GrCachedLayer::Key>::Iter iter(&fLayerHash);
- for (; !iter.done(); ++iter) {
- if (pictureID == (*iter).pictureID()) {
- *toBeRemoved.append() = &(*iter);
- }
- }
-
- for (int i = 0; i < toBeRemoved.count(); ++i) {
- SkASSERT(0 == toBeRemoved[i]->uses());
- this->unlock(toBeRemoved[i]);
- fLayerHash.remove(GrCachedLayer::GetKey(*toBeRemoved[i]));
- delete toBeRemoved[i];
- }
-
- GrPictureInfo* pictInfo = fPictureHash.find(pictureID);
- if (pictInfo) {
- fPictureHash.remove(pictureID);
- delete pictInfo;
- }
-}
-
-bool GrLayerCache::purgePlots(bool justOne) {
- SkDEBUGCODE(GrAutoValidateCache avc(this);)
- SkASSERT(fAtlas);
-
- bool anyPurged = false;
- GrLayerAtlas::PlotIter iter;
- GrLayerAtlas::Plot* plot;
- for (plot = fAtlas->iterInit(&iter, GrLayerAtlas::kLRUFirst_IterOrder);
- plot;
- plot = iter.prev()) {
- if (fPlotLocks[plot->id()] > 0) {
- continue;
- }
-
- anyPurged = true;
- this->purgePlot(plot);
- if (justOne) {
- break;
- }
- }
-
- return anyPurged;
-}
-
-void GrLayerCache::purgePlot(GrLayerAtlas::Plot* plot) {
- SkASSERT(0 == fPlotLocks[plot->id()]);
-
- // We need to find all the layers in 'plot' and remove them.
- SkTDArray<GrCachedLayer*> toBeRemoved;
-
- SkTDynamicHash<GrCachedLayer, GrCachedLayer::Key>::Iter iter(&fLayerHash);
- for (; !iter.done(); ++iter) {
- if (plot == (*iter).plot()) {
- *toBeRemoved.append() = &(*iter);
- }
- }
-
- for (int i = 0; i < toBeRemoved.count(); ++i) {
- SkASSERT(0 == toBeRemoved[i]->uses());
- SkASSERT(!toBeRemoved[i]->locked());
-
- uint32_t pictureIDToRemove = toBeRemoved[i]->pictureID();
-
- // Aggressively remove layers and, if it becomes totally uncached, delete the picture info
- fLayerHash.remove(GrCachedLayer::GetKey(*toBeRemoved[i]));
- delete toBeRemoved[i];
-
- GrPictureInfo* pictInfo = fPictureHash.find(pictureIDToRemove);
- if (pictInfo) {
-#if !GR_CACHE_HOISTED_LAYERS
- SkASSERT(0 == pictInfo->plotUsage(plot->id()));
-#endif
- pictInfo->fPlotUsage.removePlot(plot);
-
- if (pictInfo->fPlotUsage.isEmpty()) {
- fPictureHash.remove(pictInfo->fPictureID);
- delete pictInfo;
- }
- }
- }
-
- plot->reset();
-}
-
-#if !GR_CACHE_HOISTED_LAYERS
-void GrLayerCache::purgeAll() {
- if (!fAtlas) {
- return;
- }
-
- this->purgePlots(false); // clear them all out
-
- SkASSERT(0 == fPictureHash.count());
-
- if (fAtlas->getTextureOrNull()) {
- sk_sp<GrDrawContext> drawContext(
- fContext->drawContext(sk_ref_sp(fAtlas->getTexture()->asRenderTarget())));
-
- if (drawContext) {
- drawContext->discard();
- }
- }
-}
-#endif
-
-void GrLayerCache::begin() {
- if (!fAtlas) {
- return;
- }
-
- if (!fAtlas->reattachBackingTexture()) {
- // We weren't able to re-attach. Clear out all the atlased layers.
- this->purgePlots(false);
- SkASSERT(0 == fPictureHash.count());
- }
-#ifdef SK_DEBUG
- else {
- // we've reattached - everything had better make sense
- SkTDynamicHash<GrCachedLayer, GrCachedLayer::Key>::Iter iter(&fLayerHash);
- for (; !iter.done(); ++iter) {
- GrCachedLayer* layer = &(*iter);
-
- if (layer->isAtlased()) {
- SkASSERT(fAtlas->getTexture() == layer->texture());
- }
- }
- }
-#endif
-}
-
-void GrLayerCache::end() {
- if (!fAtlas) {
- return;
- }
-
- // Adding this call will clear out all the layers in the atlas
- //this->purgePlots(false);
-
- fAtlas->detachBackingTexture();
-}
-
-void GrLayerCache::processDeletedPictures() {
- SkTArray<SkPicture::DeletionMessage> deletedPictures;
- fPictDeletionInbox.poll(&deletedPictures);
-
- for (int i = 0; i < deletedPictures.count(); i++) {
- this->purge(deletedPictures[i].fUniqueID);
- }
-}
-
-#ifdef SK_DEBUG
-void GrLayerCache::writeLayersToDisk(const SkString& dirName) {
-
- if (fAtlas) {
- GrTexture* atlasTexture = fAtlas->getTextureOrNull();
- if (nullptr != atlasTexture) {
- SkString fileName(dirName);
- fileName.append("\\atlas.png");
-
- atlasTexture->surfacePriv().savePixels(fileName.c_str());
- }
- }
-
- SkTDynamicHash<GrCachedLayer, GrCachedLayer::Key>::Iter iter(&fLayerHash);
- for (; !iter.done(); ++iter) {
- GrCachedLayer* layer = &(*iter);
-
- if (layer->isAtlased() || !layer->texture()) {
- continue;
- }
-
- SkString fileName(dirName);
- fileName.appendf("\\%d", layer->fKey.pictureID());
- for (int i = 0; i < layer->fKey.keySize(); ++i) {
- fileName.appendf("-%d", layer->fKey.key()[i]);
- }
- fileName.appendf(".png");
-
- layer->texture()->surfacePriv().savePixels(fileName.c_str());
- }
-}
-#endif
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