| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "GrDrawOpAtlas.h" |
| |
| #include "GrContext.h" |
| #include "GrOpFlushState.h" |
| #include "GrRectanizer.h" |
| #include "GrResourceProvider.h" |
| #include "GrTexture.h" |
| #include "GrTracing.h" |
| |
| std::unique_ptr<GrDrawOpAtlas> GrDrawOpAtlas::Make(GrContext* ctx, GrPixelConfig config, |
| int width, int height, |
| int numPlotsX, int numPlotsY, |
| GrDrawOpAtlas::EvictionFunc func, |
| void* data) { |
| GrSurfaceDesc desc; |
| desc.fFlags = kNone_GrSurfaceFlags; |
| desc.fWidth = width; |
| desc.fHeight = height; |
| desc.fConfig = config; |
| |
| // We don't want to flush the context so we claim we're in the middle of flushing so as to |
| // guarantee we do not recieve a texture with pending IO |
| // TODO: Determine how to avoid having to do this. (https://bug.skia.org/4156) |
| static const uint32_t kFlags = GrResourceProvider::kNoPendingIO_Flag; |
| sk_sp<GrTexture> texture(ctx->resourceProvider()->createApproxTexture(desc, kFlags)); |
| if (!texture) { |
| return nullptr; |
| } |
| |
| // MDB TODO: for now, wrap an instantiated texture. Having the deferred instantiation |
| // possess the correct properties (e.g., no pendingIO) should fall out of the system but |
| // should receive special attention. |
| // Note: When switching over to the deferred proxy, use the kExact flag to create |
| // the atlas and assert that the width & height are powers of 2. |
| sk_sp<GrTextureProxy> proxy = GrSurfaceProxy::MakeWrapped(std::move(texture)); |
| if (!proxy) { |
| return nullptr; |
| } |
| |
| std::unique_ptr<GrDrawOpAtlas> atlas( |
| new GrDrawOpAtlas(ctx, std::move(proxy), numPlotsX, numPlotsY)); |
| atlas->registerEvictionCallback(func, data); |
| return atlas; |
| } |
| |
| |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| GrDrawOpAtlas::Plot::Plot(int index, uint64_t genID, int offX, int offY, int width, int height, |
| GrPixelConfig config) |
| : fLastUpload(GrDrawOpUploadToken::AlreadyFlushedToken()) |
| , fLastUse(GrDrawOpUploadToken::AlreadyFlushedToken()) |
| , fIndex(index) |
| , fGenID(genID) |
| , fID(CreateId(fIndex, fGenID)) |
| , fData(nullptr) |
| , fWidth(width) |
| , fHeight(height) |
| , fX(offX) |
| , fY(offY) |
| , fRects(nullptr) |
| , fOffset(SkIPoint16::Make(fX * fWidth, fY * fHeight)) |
| , fConfig(config) |
| , fBytesPerPixel(GrBytesPerPixel(config)) |
| #ifdef SK_DEBUG |
| , fDirty(false) |
| #endif |
| { |
| fDirtyRect.setEmpty(); |
| } |
| |
| GrDrawOpAtlas::Plot::~Plot() { |
| sk_free(fData); |
| delete fRects; |
| } |
| |
| bool GrDrawOpAtlas::Plot::addSubImage(int width, int height, const void* image, SkIPoint16* loc) { |
| SkASSERT(width <= fWidth && height <= fHeight); |
| |
| if (!fRects) { |
| fRects = GrRectanizer::Factory(fWidth, fHeight); |
| } |
| |
| if (!fRects->addRect(width, height, loc)) { |
| return false; |
| } |
| |
| if (!fData) { |
| fData = reinterpret_cast<unsigned char*>(sk_calloc_throw(fBytesPerPixel * fWidth * |
| fHeight)); |
| } |
| size_t rowBytes = width * fBytesPerPixel; |
| const unsigned char* imagePtr = (const unsigned char*)image; |
| // point ourselves at the right starting spot |
| unsigned char* dataPtr = fData; |
| dataPtr += fBytesPerPixel * fWidth * loc->fY; |
| dataPtr += fBytesPerPixel * loc->fX; |
| // copy into the data buffer, swizzling as we go if this is ARGB data |
| if (4 == fBytesPerPixel && kSkia8888_GrPixelConfig == kBGRA_8888_GrPixelConfig) { |
| for (int i = 0; i < height; ++i) { |
| SkOpts::RGBA_to_BGRA(reinterpret_cast<uint32_t*>(dataPtr), imagePtr, width); |
| dataPtr += fBytesPerPixel * fWidth; |
| imagePtr += rowBytes; |
| } |
| } else { |
| for (int i = 0; i < height; ++i) { |
| memcpy(dataPtr, imagePtr, rowBytes); |
| dataPtr += fBytesPerPixel * fWidth; |
| imagePtr += rowBytes; |
| } |
| } |
| |
| fDirtyRect.join(loc->fX, loc->fY, loc->fX + width, loc->fY + height); |
| |
| loc->fX += fOffset.fX; |
| loc->fY += fOffset.fY; |
| SkDEBUGCODE(fDirty = true;) |
| |
| return true; |
| } |
| |
| void GrDrawOpAtlas::Plot::uploadToTexture(GrDrawOp::WritePixelsFn& writePixels, |
| GrTexture* texture) { |
| // We should only be issuing uploads if we are in fact dirty |
| SkASSERT(fDirty && fData && texture); |
| TRACE_EVENT0(TRACE_DISABLED_BY_DEFAULT("skia.gpu"), "GrDrawOpAtlas::Plot::uploadToTexture"); |
| size_t rowBytes = fBytesPerPixel * fWidth; |
| const unsigned char* dataPtr = fData; |
| dataPtr += rowBytes * fDirtyRect.fTop; |
| dataPtr += fBytesPerPixel * fDirtyRect.fLeft; |
| writePixels(texture, fOffset.fX + fDirtyRect.fLeft, fOffset.fY + fDirtyRect.fTop, |
| fDirtyRect.width(), fDirtyRect.height(), fConfig, dataPtr, rowBytes); |
| fDirtyRect.setEmpty(); |
| SkDEBUGCODE(fDirty = false;) |
| } |
| |
| void GrDrawOpAtlas::Plot::resetRects() { |
| if (fRects) { |
| fRects->reset(); |
| } |
| |
| fGenID++; |
| fID = CreateId(fIndex, fGenID); |
| |
| // zero out the plot |
| if (fData) { |
| sk_bzero(fData, fBytesPerPixel * fWidth * fHeight); |
| } |
| |
| fDirtyRect.setEmpty(); |
| SkDEBUGCODE(fDirty = false;) |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| GrDrawOpAtlas::GrDrawOpAtlas(GrContext* context, sk_sp<GrTextureProxy> proxy, |
| int numPlotsX, int numPlotsY) |
| : fContext(context) |
| , fProxy(std::move(proxy)) |
| , fAtlasGeneration(kInvalidAtlasGeneration + 1) { |
| fPlotWidth = fProxy->width() / numPlotsX; |
| fPlotHeight = fProxy->height() / numPlotsY; |
| SkASSERT(numPlotsX * numPlotsY <= BulkUseTokenUpdater::kMaxPlots); |
| SkASSERT(fPlotWidth * numPlotsX == fProxy->width()); |
| SkASSERT(fPlotHeight * numPlotsY == fProxy->height()); |
| |
| SkDEBUGCODE(fNumPlots = numPlotsX * numPlotsY;) |
| |
| // set up allocated plots |
| fPlotArray.reset(new sk_sp<Plot>[ numPlotsX * numPlotsY ]); |
| |
| sk_sp<Plot>* currPlot = fPlotArray.get(); |
| for (int y = numPlotsY - 1, r = 0; y >= 0; --y, ++r) { |
| for (int x = numPlotsX - 1, c = 0; x >= 0; --x, ++c) { |
| uint32_t index = r * numPlotsX + c; |
| currPlot->reset( |
| new Plot(index, 1, x, y, fPlotWidth, fPlotHeight, fProxy->config())); |
| |
| // build LRU list |
| fPlotList.addToHead(currPlot->get()); |
| ++currPlot; |
| } |
| } |
| } |
| |
| void GrDrawOpAtlas::processEviction(AtlasID id) { |
| for (int i = 0; i < fEvictionCallbacks.count(); i++) { |
| (*fEvictionCallbacks[i].fFunc)(id, fEvictionCallbacks[i].fData); |
| } |
| } |
| |
| inline bool GrDrawOpAtlas::updatePlot(GrDrawOp::Target* target, AtlasID* id, Plot* plot) { |
| this->makeMRU(plot); |
| |
| // If our most recent upload has already occurred then we have to insert a new |
| // upload. Otherwise, we already have a scheduled upload that hasn't yet ocurred. |
| // This new update will piggy back on that previously scheduled update. |
| if (target->hasDrawBeenFlushed(plot->lastUploadToken())) { |
| // With c+14 we could move sk_sp into lamba to only ref once. |
| sk_sp<Plot> plotsp(SkRef(plot)); |
| |
| // MDB TODO: this is currently fine since the atlas' proxy is always pre-instantiated. |
| // Once it is deferred more care must be taken upon instantiation failure. |
| if (!fProxy->instantiate(fContext->resourceProvider())) { |
| return false; |
| } |
| GrTexture* texture = fProxy->priv().peekTexture(); |
| |
| GrDrawOpUploadToken lastUploadToken = target->addAsapUpload( |
| [plotsp, texture] (GrDrawOp::WritePixelsFn& writePixels) { |
| plotsp->uploadToTexture(writePixels, texture); |
| } |
| ); |
| plot->setLastUploadToken(lastUploadToken); |
| } |
| *id = plot->id(); |
| return true; |
| } |
| |
| bool GrDrawOpAtlas::addToAtlas(AtlasID* id, GrDrawOp::Target* target, int width, int height, |
| const void* image, SkIPoint16* loc) { |
| // We should already have a texture, TODO clean this up |
| SkASSERT(fProxy); |
| if (width > fPlotWidth || height > fPlotHeight) { |
| return false; |
| } |
| |
| // now look through all allocated plots for one we can share, in Most Recently Refed order |
| PlotList::Iter plotIter; |
| plotIter.init(fPlotList, PlotList::Iter::kHead_IterStart); |
| Plot* plot; |
| while ((plot = plotIter.get())) { |
| SkASSERT(GrBytesPerPixel(fProxy->config()) == plot->bpp()); |
| if (plot->addSubImage(width, height, image, loc)) { |
| return this->updatePlot(target, id, plot); |
| } |
| plotIter.next(); |
| } |
| |
| // If the above fails, then see if the least recently refed plot has already been flushed to the |
| // gpu |
| plot = fPlotList.tail(); |
| SkASSERT(plot); |
| if (target->hasDrawBeenFlushed(plot->lastUseToken())) { |
| this->processEviction(plot->id()); |
| plot->resetRects(); |
| SkASSERT(GrBytesPerPixel(fProxy->config()) == plot->bpp()); |
| SkDEBUGCODE(bool verify = )plot->addSubImage(width, height, image, loc); |
| SkASSERT(verify); |
| if (!this->updatePlot(target, id, plot)) { |
| return false; |
| } |
| |
| fAtlasGeneration++; |
| return true; |
| } |
| |
| // If this plot has been used in a draw that is currently being prepared by an op, then we have |
| // to fail. This gives the op a chance to enqueue the draw, and call back into this function. |
| // When that draw is enqueued, the draw token advances, and the subsequent call will continue |
| // past this branch and prepare an inline upload that will occur after the enqueued draw which |
| // references the plot's pre-upload content. |
| if (plot->lastUseToken() == target->nextDrawToken()) { |
| return false; |
| } |
| |
| this->processEviction(plot->id()); |
| fPlotList.remove(plot); |
| sk_sp<Plot>& newPlot = fPlotArray[plot->index()]; |
| newPlot.reset(plot->clone()); |
| |
| fPlotList.addToHead(newPlot.get()); |
| SkASSERT(GrBytesPerPixel(fProxy->config()) == newPlot->bpp()); |
| SkDEBUGCODE(bool verify = )newPlot->addSubImage(width, height, image, loc); |
| SkASSERT(verify); |
| |
| // Note that this plot will be uploaded inline with the draws whereas the |
| // one it displaced most likely was uploaded asap. |
| // With c+14 we could move sk_sp into lambda to only ref once. |
| sk_sp<Plot> plotsp(SkRef(newPlot.get())); |
| // MDB TODO: this is currently fine since the atlas' proxy is always pre-instantiated. |
| // Once it is deferred more care must be taken upon instantiation failure. |
| if (!fProxy->instantiate(fContext->resourceProvider())) { |
| return false; |
| } |
| GrTexture* texture = fProxy->priv().peekTexture(); |
| |
| GrDrawOpUploadToken lastUploadToken = target->addInlineUpload( |
| [plotsp, texture] (GrDrawOp::WritePixelsFn& writePixels) { |
| plotsp->uploadToTexture(writePixels, texture); |
| } |
| ); |
| newPlot->setLastUploadToken(lastUploadToken); |
| |
| *id = newPlot->id(); |
| |
| fAtlasGeneration++; |
| return true; |
| } |