The Tor Browser: gfx/skia/trunk/src/gpu/gl/GrGpuGL_program.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/gl/GrGpuGL_program.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/gl/GrGpuGL_program.cpp

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #include "GrGpuGL.h"
 #include "GrEffect.h"
 #include "GrGLEffect.h"
 #include "SkRTConf.h"
 #include "SkTSearch.h"
 #ifdef PROGRAM_CACHE_STATS
 SK_CONF_DECLARE(bool, c_DisplayCache, "gpu.displayCache", false,
                 "Display program cache usage.");
 #endif
 typedef GrGLUniformManager::UniformHandle UniformHandle;
 struct GrGpuGL::ProgramCache::Entry {
     SK_DECLARE_INST_COUNT_ROOT(Entry);
     Entry() : fProgram(NULL), fLRUStamp(0) {}
     SkAutoTUnref<GrGLProgram>   fProgram;
     unsigned int                fLRUStamp;
 };
 struct GrGpuGL::ProgramCache::ProgDescLess {
     bool operator() (const GrGLProgramDesc& desc, const Entry* entry) {
         SkASSERT(NULL != entry->fProgram.get());
         return GrGLProgramDesc::Less(desc, entry->fProgram->getDesc());
     }
     bool operator() (const Entry* entry, const GrGLProgramDesc& desc) {
         SkASSERT(NULL != entry->fProgram.get());
         return GrGLProgramDesc::Less(entry->fProgram->getDesc(), desc);
     }
 };
 GrGpuGL::ProgramCache::ProgramCache(GrGpuGL* gpu)
     : fCount(0)
     , fCurrLRUStamp(0)
     , fGpu(gpu)
 #ifdef PROGRAM_CACHE_STATS
     , fTotalRequests(0)
     , fCacheMisses(0)
     , fHashMisses(0)
 #endif
 {
     for (int i = 0; i < 1 << kHashBits; ++i) {
         fHashTable[i] = NULL;
     }
 }
 GrGpuGL::ProgramCache::~ProgramCache() {
     for (int i = 0; i < fCount; ++i){
         SkDELETE(fEntries[i]);
     }
     // dump stats
 #ifdef PROGRAM_CACHE_STATS
     if (c_DisplayCache) {
         SkDebugf("--- Program Cache ---\n");
         SkDebugf("Total requests: %d\n", fTotalRequests);
         SkDebugf("Cache misses: %d\n", fCacheMisses);
         SkDebugf("Cache miss %%: %f\n", (fTotalRequests > 0) ?
 .f * fCacheMisses / fTotalRequests :
 .f);
         int cacheHits = fTotalRequests - fCacheMisses;
         SkDebugf("Hash miss %%: %f\n", (cacheHits > 0) ? 100.f * fHashMisses / cacheHits : 0.f);
         SkDebugf("---------------------\n");
     }
 #endif
 }
 void GrGpuGL::ProgramCache::abandon() {
     for (int i = 0; i < fCount; ++i) {
         SkASSERT(NULL != fEntries[i]->fProgram.get());
         fEntries[i]->fProgram->abandon();
         fEntries[i]->fProgram.reset(NULL);
     }
     fCount = 0;
 }
 int GrGpuGL::ProgramCache::search(const GrGLProgramDesc& desc) const {
     ProgDescLess less;
     return SkTSearch(fEntries, fCount, desc, sizeof(Entry*), less);
 }
 GrGLProgram* GrGpuGL::ProgramCache::getProgram(const GrGLProgramDesc& desc,
                                                const GrEffectStage* colorStages[],
                                                const GrEffectStage* coverageStages[]) {
 #ifdef PROGRAM_CACHE_STATS
     ++fTotalRequests;
 #endif
     Entry* entry = NULL;
     uint32_t hashIdx = desc.getChecksum();
     hashIdx ^= hashIdx >> 16;
     if (kHashBits <= 8) {
         hashIdx ^= hashIdx >> 8;
     }
     hashIdx &=((1 << kHashBits) - 1);
     Entry* hashedEntry = fHashTable[hashIdx];
     if (NULL != hashedEntry && hashedEntry->fProgram->getDesc() == desc) {
         SkASSERT(NULL != hashedEntry->fProgram);
         entry = hashedEntry;
     }
     int entryIdx;
     if (NULL == entry) {
         entryIdx = this->search(desc);
         if (entryIdx >= 0) {
             entry = fEntries[entryIdx];
 #ifdef PROGRAM_CACHE_STATS
             ++fHashMisses;
 #endif
         }
     }
     if (NULL == entry) {
         // We have a cache miss
 #ifdef PROGRAM_CACHE_STATS
         ++fCacheMisses;
 #endif
         GrGLProgram* program = GrGLProgram::Create(fGpu, desc, colorStages, coverageStages);
         if (NULL == program) {
             return NULL;
         }
         int purgeIdx = 0;
         if (fCount < kMaxEntries) {
             entry = SkNEW(Entry);
             purgeIdx = fCount++;
             fEntries[purgeIdx] = entry;
         } else {
             SkASSERT(fCount == kMaxEntries);
             purgeIdx = 0;
             for (int i = 1; i < kMaxEntries; ++i) {
                 if (fEntries[i]->fLRUStamp < fEntries[purgeIdx]->fLRUStamp) {
                     purgeIdx = i;
                 }
             }
             entry = fEntries[purgeIdx];
             int purgedHashIdx = entry->fProgram->getDesc().getChecksum() & ((1 << kHashBits) - 1);
             if (fHashTable[purgedHashIdx] == entry) {
                 fHashTable[purgedHashIdx] = NULL;
             }
         }
         SkASSERT(fEntries[purgeIdx] == entry);
         entry->fProgram.reset(program);
         // We need to shift fEntries around so that the entry currently at purgeIdx is placed
         // just before the entry at ~entryIdx (in order to keep fEntries sorted by descriptor).
         entryIdx = ~entryIdx;
         if (entryIdx < purgeIdx) {
             //  Let E and P be the entries at index entryIdx and purgeIdx, respectively.
             //  If the entries array looks like this:
             //       aaaaEbbbbbPccccc
             //  we rearrange it to look like this:
             //       aaaaPEbbbbbccccc
             size_t copySize = (purgeIdx - entryIdx) * sizeof(Entry*);
             memmove(fEntries + entryIdx + 1, fEntries + entryIdx, copySize);
             fEntries[entryIdx] = entry;
         } else if (purgeIdx < entryIdx) {
             //  If the entries array looks like this:
             //       aaaaPbbbbbEccccc
             //  we rearrange it to look like this:
             //       aaaabbbbbPEccccc
             size_t copySize = (entryIdx - purgeIdx - 1) * sizeof(Entry*);
             memmove(fEntries + purgeIdx, fEntries + purgeIdx + 1, copySize);
             fEntries[entryIdx - 1] = entry;
         }
 #ifdef SK_DEBUG
         SkASSERT(NULL != fEntries[0]->fProgram.get());
         for (int i = 0; i < fCount - 1; ++i) {
             SkASSERT(NULL != fEntries[i + 1]->fProgram.get());
             const GrGLProgramDesc& a = fEntries[i]->fProgram->getDesc();
             const GrGLProgramDesc& b = fEntries[i + 1]->fProgram->getDesc();
             SkASSERT(GrGLProgramDesc::Less(a, b));
             SkASSERT(!GrGLProgramDesc::Less(b, a));
         }
 #endif
     }
     fHashTable[hashIdx] = entry;
     entry->fLRUStamp = fCurrLRUStamp;
     if (SK_MaxU32 == fCurrLRUStamp) {
         // wrap around! just trash our LRU, one time hit.
         for (int i = 0; i < fCount; ++i) {
             fEntries[i]->fLRUStamp = 0;
         }
     }
     ++fCurrLRUStamp;
     return entry->fProgram;
 }
 ////////////////////////////////////////////////////////////////////////////////
 void GrGpuGL::abandonResources(){
     INHERITED::abandonResources();
     fProgramCache->abandon();
     fHWProgramID = 0;
 }
 ////////////////////////////////////////////////////////////////////////////////
 #define GL_CALL(X) GR_GL_CALL(this->glInterface(), X)
 bool GrGpuGL::flushGraphicsState(DrawType type, const GrDeviceCoordTexture* dstCopy) {
     const GrDrawState& drawState = this->getDrawState();
     // GrGpu::setupClipAndFlushState should have already checked this and bailed if not true.
     SkASSERT(NULL != drawState.getRenderTarget());
     if (kStencilPath_DrawType == type) {
         const GrRenderTarget* rt = this->getDrawState().getRenderTarget();
         SkISize size;
         size.set(rt->width(), rt->height());
         this->setProjectionMatrix(drawState.getViewMatrix(), size, rt->origin());
     } else {
         this->flushMiscFixedFunctionState();
         GrBlendCoeff srcCoeff;
         GrBlendCoeff dstCoeff;
         GrDrawState::BlendOptFlags blendOpts = drawState.getBlendOpts(false, &srcCoeff, &dstCoeff);
         if (GrDrawState::kSkipDraw_BlendOptFlag & blendOpts) {
             return false;
         }
         SkSTArray<8, const GrEffectStage*, true> colorStages;
         SkSTArray<8, const GrEffectStage*, true> coverageStages;
         GrGLProgramDesc desc;
         GrGLProgramDesc::Build(this->getDrawState(),
                                kDrawPoints_DrawType == type,
                                blendOpts,
                                srcCoeff,
                                dstCoeff,
                                this,
                                dstCopy,
                                &colorStages,
                                &coverageStages,
                                &desc);
         fCurrentProgram.reset(fProgramCache->getProgram(desc,
                                                         colorStages.begin(),
                                                         coverageStages.begin()));
         if (NULL == fCurrentProgram.get()) {
             SkDEBUGFAIL("Failed to create program!");
             return false;
         }
         SkASSERT(kDrawPath_DrawType != type || !fCurrentProgram->hasVertexShader());
         fCurrentProgram.get()->ref();
         GrGLuint programID = fCurrentProgram->programID();
         if (fHWProgramID != programID) {
             GL_CALL(UseProgram(programID));
             fHWProgramID = programID;
         }
         fCurrentProgram->overrideBlend(&srcCoeff, &dstCoeff);
         this->flushBlend(kDrawLines_DrawType == type, srcCoeff, dstCoeff);
         fCurrentProgram->setData(blendOpts,
                                  colorStages.begin(),
                                  coverageStages.begin(),
                                  dstCopy,
                                  &fSharedGLProgramState);
     }
     this->flushStencil(type);
     this->flushScissor();
     this->flushAAState(type);
     SkIRect* devRect = NULL;
     SkIRect devClipBounds;
     if (drawState.isClipState()) {
         this->getClip()->getConservativeBounds(drawState.getRenderTarget(), &devClipBounds);
         devRect = &devClipBounds;
     }
     // This must come after textures are flushed because a texture may need
     // to be msaa-resolved (which will modify bound FBO state).
     this->flushRenderTarget(devRect);
     return true;
 }
 void GrGpuGL::setupGeometry(const DrawInfo& info, size_t* indexOffsetInBytes) {
     GrGLsizei stride = static_cast<GrGLsizei>(this->getDrawState().getVertexSize());
     size_t vertexOffsetInBytes = stride * info.startVertex();
     const GeometryPoolState& geoPoolState = this->getGeomPoolState();
     GrGLVertexBuffer* vbuf;
     switch (this->getGeomSrc().fVertexSrc) {
         case kBuffer_GeometrySrcType:
             vbuf = (GrGLVertexBuffer*) this->getGeomSrc().fVertexBuffer;
             break;
         case kArray_GeometrySrcType:
         case kReserved_GeometrySrcType:
             this->finalizeReservedVertices();
             vertexOffsetInBytes += geoPoolState.fPoolStartVertex * this->getGeomSrc().fVertexSize;
             vbuf = (GrGLVertexBuffer*) geoPoolState.fPoolVertexBuffer;
             break;
         default:
             vbuf = NULL; // suppress warning
             GrCrash("Unknown geometry src type!");
     }
     SkASSERT(NULL != vbuf);
     SkASSERT(!vbuf->isLocked());
     vertexOffsetInBytes += vbuf->baseOffset();
     GrGLIndexBuffer* ibuf = NULL;
     if (info.isIndexed()) {
         SkASSERT(NULL != indexOffsetInBytes);
         switch (this->getGeomSrc().fIndexSrc) {
         case kBuffer_GeometrySrcType:
             *indexOffsetInBytes = 0;
             ibuf = (GrGLIndexBuffer*)this->getGeomSrc().fIndexBuffer;
             break;
         case kArray_GeometrySrcType:
         case kReserved_GeometrySrcType:
             this->finalizeReservedIndices();
             *indexOffsetInBytes = geoPoolState.fPoolStartIndex * sizeof(GrGLushort);
             ibuf = (GrGLIndexBuffer*) geoPoolState.fPoolIndexBuffer;
             break;
         default:
             ibuf = NULL; // suppress warning
             GrCrash("Unknown geometry src type!");
         }
         SkASSERT(NULL != ibuf);
         SkASSERT(!ibuf->isLocked());
         *indexOffsetInBytes += ibuf->baseOffset();
     }
     GrGLAttribArrayState* attribState =
         fHWGeometryState.bindArrayAndBuffersToDraw(this, vbuf, ibuf);
     if (!fCurrentProgram->hasVertexShader()) {
         int posIdx = this->getDrawState().positionAttributeIndex();
         const GrVertexAttrib* vertexAttrib = this->getDrawState().getVertexAttribs() + posIdx;
         GrVertexAttribType attribType = vertexAttrib->fType;
         SkASSERT(!GrGLAttribTypeToLayout(attribType).fNormalized);
         SkASSERT(GrGLAttribTypeToLayout(attribType).fCount == 2);
         // Attrib at location 0 is defined to be bound to vertex in fixed-function pipe.  Asserts
         // above should make sure position attribute goes to location 0 when below code is executed.
         attribState->set(this,
 ,
                          vbuf,
                          GrGLAttribTypeToLayout(attribType).fCount,
                          GrGLAttribTypeToLayout(attribType).fType,
                          GrGLAttribTypeToLayout(attribType).fNormalized,
                          stride,
                          reinterpret_cast<GrGLvoid*>(
                              vertexOffsetInBytes + vertexAttrib->fOffset));
         attribState->disableUnusedArrays(this, 1);
     } else {
         int vertexAttribCount = this->getDrawState().getVertexAttribCount();
         uint32_t usedAttribArraysMask = 0;
         const GrVertexAttrib* vertexAttrib = this->getDrawState().getVertexAttribs();
         for (int vertexAttribIndex = 0; vertexAttribIndex < vertexAttribCount;
              ++vertexAttribIndex, ++vertexAttrib) {
             usedAttribArraysMask |= (1 << vertexAttribIndex);
             GrVertexAttribType attribType = vertexAttrib->fType;
             attribState->set(this,
                              vertexAttribIndex,
                              vbuf,
                              GrGLAttribTypeToLayout(attribType).fCount,
                              GrGLAttribTypeToLayout(attribType).fType,
                              GrGLAttribTypeToLayout(attribType).fNormalized,
                              stride,
                              reinterpret_cast<GrGLvoid*>(
                                  vertexOffsetInBytes + vertexAttrib->fOffset));
         }
         attribState->disableUnusedArrays(this, usedAttribArraysMask);
     }
 }

The Tor Browser / annotate

gfx/skia/trunk/src/gpu/gl/GrGpuGL_program.cpp@129ffea94266 (annotated)

gfx/skia/trunk/src/gpu/gl/GrGpuGL_program.cpp