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

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

gfx/skia/trunk/src/gpu/GrTexture.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 "GrTexture.h"
 #include "GrContext.h"
 #include "GrDrawTargetCaps.h"
 #include "GrGpu.h"
 #include "GrRenderTarget.h"
 #include "GrResourceCache.h"
 GrTexture::~GrTexture() {
     if (NULL != fRenderTarget.get()) {
         fRenderTarget.get()->owningTextureDestroyed();
     }
 }
 /**
  * This method allows us to interrupt the normal deletion process and place
  * textures back in the texture cache when their ref count goes to zero.
  */
 void GrTexture::internal_dispose() const {
     if (this->isSetFlag((GrTextureFlags) kReturnToCache_FlagBit) &&
         NULL != this->INHERITED::getContext()) {
         GrTexture* nonConstThis = const_cast<GrTexture *>(this);
         this->fRefCnt = 1;      // restore ref count to initial setting
         nonConstThis->resetFlag((GrTextureFlags) kReturnToCache_FlagBit);
         nonConstThis->INHERITED::getContext()->addExistingTextureToCache(nonConstThis);
         // Note: "this" texture might be freed inside addExistingTextureToCache
         // if it is purged.
         return;
     }
     SkASSERT(0 == this->getDeferredRefCount());
     this->INHERITED::internal_dispose();
 }
 bool GrTexture::readPixels(int left, int top, int width, int height,
                            GrPixelConfig config, void* buffer,
                            size_t rowBytes, uint32_t pixelOpsFlags) {
     // go through context so that all necessary flushing occurs
     GrContext* context = this->getContext();
     if (NULL == context) {
         return false;
     }
     return context->readTexturePixels(this,
                                       left, top, width, height,
                                       config, buffer, rowBytes,
                                       pixelOpsFlags);
 }
 void GrTexture::writePixels(int left, int top, int width, int height,
                             GrPixelConfig config, const void* buffer,
                             size_t rowBytes, uint32_t pixelOpsFlags) {
     // go through context so that all necessary flushing occurs
     GrContext* context = this->getContext();
     if (NULL == context) {
         return;
     }
     context->writeTexturePixels(this,
                                 left, top, width, height,
                                 config, buffer, rowBytes,
                                 pixelOpsFlags);
 }
 void GrTexture::onRelease() {
     SkASSERT(!this->isSetFlag((GrTextureFlags) kReturnToCache_FlagBit));
     INHERITED::onRelease();
 }
 void GrTexture::onAbandon() {
     if (NULL != fRenderTarget.get()) {
         fRenderTarget->abandon();
     }
     INHERITED::onAbandon();
 }
 void GrTexture::validateDesc() const {
     if (NULL != this->asRenderTarget()) {
         // This texture has a render target
         SkASSERT(0 != (fDesc.fFlags & kRenderTarget_GrTextureFlagBit));
         if (NULL != this->asRenderTarget()->getStencilBuffer()) {
             SkASSERT(0 != (fDesc.fFlags & kNoStencil_GrTextureFlagBit));
         } else {
             SkASSERT(0 == (fDesc.fFlags & kNoStencil_GrTextureFlagBit));
         }
         SkASSERT(fDesc.fSampleCnt == this->asRenderTarget()->numSamples());
     } else {
         SkASSERT(0 == (fDesc.fFlags & kRenderTarget_GrTextureFlagBit));
         SkASSERT(0 == (fDesc.fFlags & kNoStencil_GrTextureFlagBit));
         SkASSERT(0 == fDesc.fSampleCnt);
     }
 }
 // These flags need to fit in a GrResourceKey::ResourceFlags so they can be folded into the texture
 // key
 enum TextureFlags {
     /**
      * The kStretchToPOT bit is set when the texture is NPOT and is being repeated but the
      * hardware doesn't support that feature.
      */
     kStretchToPOT_TextureFlag = 0x1,
     /**
      * The kBilerp bit can only be set when the kStretchToPOT flag is set and indicates whether the
      * stretched texture should be bilerped.
      */
      kBilerp_TextureFlag       = 0x2,
 };
 namespace {
 GrResourceKey::ResourceFlags get_texture_flags(const GrGpu* gpu,
                                                const GrTextureParams* params,
                                                const GrTextureDesc& desc) {
     GrResourceKey::ResourceFlags flags = 0;
     bool tiled = NULL != params && params->isTiled();
     if (tiled && !gpu->caps()->npotTextureTileSupport()) {
         if (!GrIsPow2(desc.fWidth) || !GrIsPow2(desc.fHeight)) {
             flags |= kStretchToPOT_TextureFlag;
             switch(params->filterMode()) {
                 case GrTextureParams::kNone_FilterMode:
                     break;
                 case GrTextureParams::kBilerp_FilterMode:
                 case GrTextureParams::kMipMap_FilterMode:
                     flags |= kBilerp_TextureFlag;
                     break;
             }
         }
     }
     return flags;
 }
 GrResourceKey::ResourceType texture_resource_type() {
     static const GrResourceKey::ResourceType gType = GrResourceKey::GenerateResourceType();
     return gType;
 }
 // FIXME:  This should be refactored with the code in gl/GrGpuGL.cpp.
 GrSurfaceOrigin resolve_origin(const GrTextureDesc& desc) {
     // By default, GrRenderTargets are GL's normal orientation so that they
     // can be drawn to by the outside world without the client having
     // to render upside down.
     bool renderTarget = 0 != (desc.fFlags & kRenderTarget_GrTextureFlagBit);
     if (kDefault_GrSurfaceOrigin == desc.fOrigin) {
         return renderTarget ? kBottomLeft_GrSurfaceOrigin : kTopLeft_GrSurfaceOrigin;
     } else {
         return desc.fOrigin;
     }
 }
 }
 GrResourceKey GrTexture::ComputeKey(const GrGpu* gpu,
                                     const GrTextureParams* params,
                                     const GrTextureDesc& desc,
                                     const GrCacheID& cacheID) {
     GrResourceKey::ResourceFlags flags = get_texture_flags(gpu, params, desc);
     return GrResourceKey(cacheID, texture_resource_type(), flags);
 }
 GrResourceKey GrTexture::ComputeScratchKey(const GrTextureDesc& desc) {
     GrCacheID::Key idKey;
     // Instead of a client-provided key of the texture contents we create a key from the
     // descriptor.
     GR_STATIC_ASSERT(sizeof(idKey) >= 16);
     SkASSERT(desc.fHeight < (1 << 16));
     SkASSERT(desc.fWidth < (1 << 16));
     idKey.fData32[0] = (desc.fWidth) | (desc.fHeight << 16);
     idKey.fData32[1] = desc.fConfig | desc.fSampleCnt << 16;
     idKey.fData32[2] = desc.fFlags;
     idKey.fData32[3] = resolve_origin(desc);    // Only needs 2 bits actually
     static const int kPadSize = sizeof(idKey) - 16;
     GR_STATIC_ASSERT(kPadSize >= 0);
     memset(idKey.fData8 + 16, 0, kPadSize);
     GrCacheID cacheID(GrResourceKey::ScratchDomain(), idKey);
     return GrResourceKey(cacheID, texture_resource_type(), 0);
 }
 bool GrTexture::NeedsResizing(const GrResourceKey& key) {
     return SkToBool(key.getResourceFlags() & kStretchToPOT_TextureFlag);
 }
 bool GrTexture::NeedsBilerp(const GrResourceKey& key) {
     return SkToBool(key.getResourceFlags() & kBilerp_TextureFlag);
 }

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

gfx/skia/trunk/src/gpu/GrTexture.cpp