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      1 /*
      2  * Copyright 2015 Google Inc.
      3  *
      4  * Use of this source code is governed by a BSD-style license that can be
      5  * found in the LICENSE file.
      6  */
      7 
      8 #include "GrOpFlushState.h"
      9 
     10 #include "GrContextPriv.h"
     11 #include "GrDrawOpAtlas.h"
     12 #include "GrGpu.h"
     13 #include "GrResourceProvider.h"
     14 #include "GrTexture.h"
     15 
     16 //////////////////////////////////////////////////////////////////////////////
     17 
     18 GrOpFlushState::GrOpFlushState(GrGpu* gpu,
     19                                GrResourceProvider* resourceProvider,
     20                                GrTokenTracker* tokenTracker)
     21         : fVertexPool(gpu)
     22         , fIndexPool(gpu)
     23         , fGpu(gpu)
     24         , fResourceProvider(resourceProvider)
     25         , fTokenTracker(tokenTracker) {
     26 }
     27 
     28 const GrCaps& GrOpFlushState::caps() const {
     29     return *fGpu->caps();
     30 }
     31 
     32 GrGpuRTCommandBuffer* GrOpFlushState::rtCommandBuffer() {
     33     return fCommandBuffer->asRTCommandBuffer();
     34 }
     35 
     36 void GrOpFlushState::executeDrawsAndUploadsForMeshDrawOp(uint32_t opID, const SkRect& opBounds) {
     37     SkASSERT(this->rtCommandBuffer());
     38     while (fCurrDraw != fDraws.end() && fCurrDraw->fOpID == opID) {
     39         GrDeferredUploadToken drawToken = fTokenTracker->nextTokenToFlush();
     40         while (fCurrUpload != fInlineUploads.end() &&
     41                fCurrUpload->fUploadBeforeToken == drawToken) {
     42             this->rtCommandBuffer()->inlineUpload(this, fCurrUpload->fUpload);
     43             ++fCurrUpload;
     44         }
     45         SkASSERT(fCurrDraw->fPipeline->proxy() == this->drawOpArgs().fProxy);
     46         this->rtCommandBuffer()->draw(*fCurrDraw->fPipeline, *fCurrDraw->fGeometryProcessor,
     47                                       fMeshes.begin() + fCurrMesh, nullptr, fCurrDraw->fMeshCnt,
     48                                       opBounds);
     49         fCurrMesh += fCurrDraw->fMeshCnt;
     50         fTokenTracker->flushToken();
     51         ++fCurrDraw;
     52     }
     53 }
     54 
     55 void GrOpFlushState::preExecuteDraws() {
     56     fVertexPool.unmap();
     57     fIndexPool.unmap();
     58     for (auto& upload : fASAPUploads) {
     59         this->doUpload(upload);
     60     }
     61     // Setup execution iterators.
     62     fCurrDraw = fDraws.begin();
     63     fCurrUpload = fInlineUploads.begin();
     64     fCurrMesh = 0;
     65 }
     66 
     67 void GrOpFlushState::reset() {
     68     SkASSERT(fCurrDraw == fDraws.end());
     69     SkASSERT(fCurrUpload == fInlineUploads.end());
     70     fVertexPool.reset();
     71     fIndexPool.reset();
     72     fArena.reset();
     73     fASAPUploads.reset();
     74     fInlineUploads.reset();
     75     fDraws.reset();
     76     fMeshes.reset();
     77     fCurrMesh = 0;
     78     fBaseDrawToken = GrDeferredUploadToken::AlreadyFlushedToken();
     79 }
     80 
     81 void GrOpFlushState::doUpload(GrDeferredTextureUploadFn& upload) {
     82     GrDeferredTextureUploadWritePixelsFn wp = [this](GrTextureProxy* dstProxy, int left, int top,
     83                                                      int width, int height,
     84                                                      GrColorType srcColorType, const void* buffer,
     85                                                      size_t rowBytes) {
     86         // We don't allow srgb conversions via op flush state uploads.
     87         static constexpr auto kSRGBConversion = GrSRGBConversion::kNone;
     88         GrSurface* dstSurface = dstProxy->priv().peekSurface();
     89         GrGpu::DrawPreference drawPreference = GrGpu::kNoDraw_DrawPreference;
     90         GrGpu::WritePixelTempDrawInfo tempInfo;
     91         if (!fGpu->getWritePixelsInfo(dstSurface, dstProxy->origin(), width, height, srcColorType,
     92                                       kSRGBConversion, &drawPreference, &tempInfo)) {
     93             return false;
     94         }
     95         if (GrGpu::kNoDraw_DrawPreference == drawPreference) {
     96             return this->fGpu->writePixels(dstSurface, dstProxy->origin(), left, top, width, height,
     97                                            srcColorType, buffer, rowBytes);
     98         }
     99         // TODO: Shouldn't we be bailing here if a draw is really required instead of a copy?
    100         // e.g. if (tempInfo.fSwizzle != "RGBA") fail.
    101         GrSurfaceDesc desc;
    102         desc.fOrigin = dstProxy->origin();
    103         desc.fWidth = width;
    104         desc.fHeight = height;
    105         desc.fConfig = dstProxy->config();
    106         sk_sp<GrTexture> temp(this->fResourceProvider->createApproxTexture(
    107                 desc, GrResourceProvider::kNoPendingIO_Flag));
    108         if (!temp) {
    109             return false;
    110         }
    111         if (!fGpu->writePixels(temp.get(), dstProxy->origin(), 0, 0, width, height,
    112                                tempInfo.fWriteColorType, buffer, rowBytes)) {
    113             return false;
    114         }
    115         return fGpu->copySurface(dstSurface, dstProxy->origin(), temp.get(), dstProxy->origin(),
    116                                  SkIRect::MakeWH(width, height), {left, top});
    117     };
    118     upload(wp);
    119 }
    120 
    121 GrDeferredUploadToken GrOpFlushState::addInlineUpload(GrDeferredTextureUploadFn&& upload) {
    122     return fInlineUploads.append(&fArena, std::move(upload), fTokenTracker->nextDrawToken())
    123             .fUploadBeforeToken;
    124 }
    125 
    126 GrDeferredUploadToken GrOpFlushState::addASAPUpload(GrDeferredTextureUploadFn&& upload) {
    127     fASAPUploads.append(&fArena, std::move(upload));
    128     return fTokenTracker->nextTokenToFlush();
    129 }
    130 
    131 void GrOpFlushState::draw(const GrGeometryProcessor* gp, const GrPipeline* pipeline,
    132                           const GrMesh& mesh) {
    133     SkASSERT(fOpArgs);
    134     SkASSERT(fOpArgs->fOp);
    135     fMeshes.push_back(mesh);
    136     bool firstDraw = fDraws.begin() == fDraws.end();
    137     if (!firstDraw) {
    138         Draw& lastDraw = *fDraws.begin();
    139         // If the last draw shares a geometry processor and pipeline and there are no intervening
    140         // uploads, add this mesh to it.
    141         if (lastDraw.fGeometryProcessor == gp && lastDraw.fPipeline == pipeline) {
    142             if (fInlineUploads.begin() == fInlineUploads.end() ||
    143                 fInlineUploads.tail()->fUploadBeforeToken != fTokenTracker->nextDrawToken()) {
    144                 ++lastDraw.fMeshCnt;
    145                 return;
    146             }
    147         }
    148     }
    149     auto& draw = fDraws.append(&fArena);
    150     GrDeferredUploadToken token = fTokenTracker->issueDrawToken();
    151 
    152     draw.fGeometryProcessor.reset(gp);
    153     draw.fPipeline = pipeline;
    154     draw.fMeshCnt = 1;
    155     draw.fOpID = fOpArgs->fOp->uniqueID();
    156     if (firstDraw) {
    157         fBaseDrawToken = token;
    158     }
    159 }
    160 
    161 void* GrOpFlushState::makeVertexSpace(size_t vertexSize, int vertexCount, const GrBuffer** buffer,
    162                                       int* startVertex) {
    163     return fVertexPool.makeSpace(vertexSize, vertexCount, buffer, startVertex);
    164 }
    165 
    166 uint16_t* GrOpFlushState::makeIndexSpace(int indexCount, const GrBuffer** buffer, int* startIndex) {
    167     return reinterpret_cast<uint16_t*>(fIndexPool.makeSpace(indexCount, buffer, startIndex));
    168 }
    169 
    170 void* GrOpFlushState::makeVertexSpaceAtLeast(size_t vertexSize, int minVertexCount,
    171                                              int fallbackVertexCount, const GrBuffer** buffer,
    172                                              int* startVertex, int* actualVertexCount) {
    173     return fVertexPool.makeSpaceAtLeast(vertexSize, minVertexCount, fallbackVertexCount, buffer,
    174                                         startVertex, actualVertexCount);
    175 }
    176 
    177 uint16_t* GrOpFlushState::makeIndexSpaceAtLeast(int minIndexCount, int fallbackIndexCount,
    178                                                 const GrBuffer** buffer, int* startIndex,
    179                                                 int* actualIndexCount) {
    180     return reinterpret_cast<uint16_t*>(fIndexPool.makeSpaceAtLeast(
    181             minIndexCount, fallbackIndexCount, buffer, startIndex, actualIndexCount));
    182 }
    183 
    184 void GrOpFlushState::putBackIndices(int indexCount) {
    185     fIndexPool.putBack(indexCount * sizeof(uint16_t));
    186 }
    187 
    188 void GrOpFlushState::putBackVertices(int vertices, size_t vertexStride) {
    189     fVertexPool.putBack(vertices * vertexStride);
    190 }
    191 
    192 GrAppliedClip GrOpFlushState::detachAppliedClip() {
    193     return fOpArgs->fAppliedClip ? std::move(*fOpArgs->fAppliedClip) : GrAppliedClip();
    194 }
    195 
    196 GrGlyphCache* GrOpFlushState::glyphCache() const {
    197     return fGpu->getContext()->contextPriv().getGlyphCache();
    198 }
    199 
    200 GrAtlasManager* GrOpFlushState::fullAtlasManager() const {
    201     return fGpu->getContext()->contextPriv().getFullAtlasManager();
    202 }
    203