The Tor Browser: gfx/angle/src/libGLESv2/renderer/BufferStorage11.cpp@129ffea94266 (annotated)

gfx/angle/src/libGLESv2/renderer/BufferStorage11.cpp@129ffea94266 (annotated)

gfx/angle/src/libGLESv2/renderer/BufferStorage11.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.

 #include "precompiled.h"
 //
 // Copyright (c) 2013 The ANGLE Project Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // BufferStorage11.cpp Defines the BufferStorage11 class.
 #include "libGLESv2/renderer/BufferStorage11.h"
 #include "libGLESv2/main.h"
 #include "libGLESv2/renderer/Renderer11.h"
 namespace rx
 {
 BufferStorage11::BufferStorage11(Renderer11 *renderer)
 {
     mRenderer = renderer;
     mStagingBuffer = NULL;
     mStagingBufferSize = 0;
     mBuffer = NULL;
     mBufferSize = 0;
     mSize = 0;
     mResolvedData = NULL;
     mResolvedDataSize = 0;
     mResolvedDataValid = false;
     mReadUsageCount = 0;
     mWriteUsageCount = 0;
 }
 BufferStorage11::~BufferStorage11()
 {
     if (mStagingBuffer)
     {
         mStagingBuffer->Release();
         mStagingBuffer = NULL;
     }
     if (mBuffer)
     {
         mBuffer->Release();
         mBuffer = NULL;
     }
     if (mResolvedData)
     {
         free(mResolvedData);
         mResolvedData = NULL;
     }
 }
 BufferStorage11 *BufferStorage11::makeBufferStorage11(BufferStorage *bufferStorage)
 {
     ASSERT(HAS_DYNAMIC_TYPE(BufferStorage11*, bufferStorage));
     return static_cast<BufferStorage11*>(bufferStorage);
 }
 void *BufferStorage11::getData()
 {
     if (!mResolvedDataValid)
     {
         ID3D11Device *device = mRenderer->getDevice();
         ID3D11DeviceContext *context = mRenderer->getDeviceContext();
         HRESULT result;
         if (!mStagingBuffer || mStagingBufferSize < mBufferSize)
         {
             if (mStagingBuffer)
             {
                 mStagingBuffer->Release();
                 mStagingBuffer = NULL;
                 mStagingBufferSize = 0;
             }
             D3D11_BUFFER_DESC bufferDesc;
             bufferDesc.ByteWidth = mSize;
             bufferDesc.Usage = D3D11_USAGE_STAGING;
             bufferDesc.BindFlags = 0;
             bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
             bufferDesc.MiscFlags = 0;
             bufferDesc.StructureByteStride = 0;
             result = device->CreateBuffer(&bufferDesc, NULL, &mStagingBuffer);
             if (FAILED(result))
             {
                 return gl::error(GL_OUT_OF_MEMORY, (void*)NULL);
             }
             mStagingBufferSize = bufferDesc.ByteWidth;
         }
         if (!mResolvedData || mResolvedDataSize < mBufferSize)
         {
             free(mResolvedData);
             mResolvedData = malloc(mSize);
             mResolvedDataSize = mSize;
         }
         D3D11_BOX srcBox;
         srcBox.left = 0;
         srcBox.right = mSize;
         srcBox.top = 0;
         srcBox.bottom = 1;
         srcBox.front = 0;
         srcBox.back = 1;
         context->CopySubresourceRegion(mStagingBuffer, 0, 0, 0, 0, mBuffer, 0, &srcBox);
         D3D11_MAPPED_SUBRESOURCE mappedResource;
         result = context->Map(mStagingBuffer, 0, D3D11_MAP_READ, 0, &mappedResource);
         if (FAILED(result))
         {
             return gl::error(GL_OUT_OF_MEMORY, (void*)NULL);
         }
         memcpy(mResolvedData, mappedResource.pData, mSize);
         context->Unmap(mStagingBuffer, 0);
         mResolvedDataValid = true;
     }
     mReadUsageCount = 0;
     return mResolvedData;
 }
 void BufferStorage11::setData(const void* data, unsigned int size, unsigned int offset)
 {
     ID3D11Device *device = mRenderer->getDevice();
     ID3D11DeviceContext *context = mRenderer->getDeviceContext();
     HRESULT result;
     unsigned int requiredBufferSize = size + offset;
     unsigned int requiredStagingSize = size;
     bool directInitialization = offset == 0 && (!mBuffer || mBufferSize < size + offset);
     if (!directInitialization)
     {
         if (!mStagingBuffer || mStagingBufferSize < requiredStagingSize)
         {
             if (mStagingBuffer)
             {
                 mStagingBuffer->Release();
                 mStagingBuffer = NULL;
                 mStagingBufferSize = 0;
             }
             D3D11_BUFFER_DESC bufferDesc;
             bufferDesc.ByteWidth = size;
             bufferDesc.Usage = D3D11_USAGE_STAGING;
             bufferDesc.BindFlags = 0;
             bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
             bufferDesc.MiscFlags = 0;
             bufferDesc.StructureByteStride = 0;
             if (data)
             {
                 D3D11_SUBRESOURCE_DATA initialData;
                 initialData.pSysMem = data;
                 initialData.SysMemPitch = size;
                 initialData.SysMemSlicePitch = 0;
                 result = device->CreateBuffer(&bufferDesc, &initialData, &mStagingBuffer);
             }
             else
             {
                 result = device->CreateBuffer(&bufferDesc, NULL, &mStagingBuffer);
             }
             if (FAILED(result))
             {
                 return gl::error(GL_OUT_OF_MEMORY);
             }
             mStagingBufferSize = size;
         }
         else if (data)
         {
             D3D11_MAPPED_SUBRESOURCE mappedResource;
             result = context->Map(mStagingBuffer, 0, D3D11_MAP_WRITE, 0, &mappedResource);
             if (FAILED(result))
             {
                 return gl::error(GL_OUT_OF_MEMORY);
             }
             memcpy(mappedResource.pData, data, size);
             context->Unmap(mStagingBuffer, 0);
         }
     }
     if (!mBuffer || mBufferSize < size + offset)
     {
         D3D11_BUFFER_DESC bufferDesc;
         bufferDesc.ByteWidth = requiredBufferSize;
         bufferDesc.Usage = D3D11_USAGE_DEFAULT;
         bufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER | D3D11_BIND_INDEX_BUFFER;
         bufferDesc.CPUAccessFlags = 0;
         bufferDesc.MiscFlags = 0;
         bufferDesc.StructureByteStride = 0;
         if (directInitialization)
         {
             // Since the data will fill the entire buffer (being larger than the initial size and having
             // no offset), the buffer can be initialized with the data so no staging buffer is required
             // No longer need the old buffer
             if (mBuffer)
             {
                 mBuffer->Release();
                 mBuffer = NULL;
                 mBufferSize = 0;
             }
             if (data)
             {
                 D3D11_SUBRESOURCE_DATA initialData;
                 initialData.pSysMem = data;
                 initialData.SysMemPitch = size;
                 initialData.SysMemSlicePitch = 0;
                 result = device->CreateBuffer(&bufferDesc, &initialData, &mBuffer);
             }
             else
             {
                 result = device->CreateBuffer(&bufferDesc, NULL, &mBuffer);
             }
             if (FAILED(result))
             {
                 return gl::error(GL_OUT_OF_MEMORY);
             }
         }
         else if (mBuffer && offset > 0)
         {
             // If offset is greater than zero and the buffer is non-null, need to preserve the data from
             // the old buffer up to offset
             ID3D11Buffer *newBuffer = NULL;
             result = device->CreateBuffer(&bufferDesc, NULL, &newBuffer);
             if (FAILED(result))
             {
                 return gl::error(GL_OUT_OF_MEMORY);
             }
             D3D11_BOX srcBox;
             srcBox.left = 0;
             srcBox.right = std::min(offset, mBufferSize);
             srcBox.top = 0;
             srcBox.bottom = 1;
             srcBox.front = 0;
             srcBox.back = 1;
             context->CopySubresourceRegion(newBuffer, 0, 0, 0, 0, mBuffer, 0, &srcBox);
             mBuffer->Release();
             mBuffer = newBuffer;
         }
         else
         {
             // Simple case, nothing needs to be copied from the old buffer to the new one, just create
             // a new buffer
             // No longer need the old buffer
             if (mBuffer)
             {
                 mBuffer->Release();
                 mBuffer = NULL;
                 mBufferSize = 0;
             }
             // Create a new buffer for data storage
             result = device->CreateBuffer(&bufferDesc, NULL, &mBuffer);
             if (FAILED(result))
             {
                 return gl::error(GL_OUT_OF_MEMORY);
             }
         }
         updateSerial();
         mBufferSize = bufferDesc.ByteWidth;
     }
     if (!directInitialization)
     {
         ASSERT(mStagingBuffer && mStagingBufferSize >= requiredStagingSize);
         // Data is already put into the staging buffer, copy it over to the data buffer
         D3D11_BOX srcBox;
         srcBox.left = 0;
         srcBox.right = size;
         srcBox.top = 0;
         srcBox.bottom = 1;
         srcBox.front = 0;
         srcBox.back = 1;
         context->CopySubresourceRegion(mBuffer, 0, offset, 0, 0, mStagingBuffer, 0, &srcBox);
     }
     mSize = std::max(mSize, offset + size);
     mWriteUsageCount = 0;
     mResolvedDataValid = false;
 }
 void BufferStorage11::clear()
 {
     mResolvedDataValid = false;
     mSize = 0;
 }
 unsigned int BufferStorage11::getSize() const
 {
     return mSize;
 }
 bool BufferStorage11::supportsDirectBinding() const
 {
     return true;
 }
 void BufferStorage11::markBufferUsage()
 {
     mReadUsageCount++;
     mWriteUsageCount++;
     static const unsigned int usageLimit = 5;
     if (mReadUsageCount > usageLimit && mResolvedData)
     {
         free(mResolvedData);
         mResolvedData = NULL;
         mResolvedDataSize = 0;
         mResolvedDataValid = false;
     }
     if (mReadUsageCount > usageLimit && mWriteUsageCount > usageLimit && mStagingBuffer)
     {
         mStagingBuffer->Release();
         mStagingBuffer = NULL;
         mStagingBufferSize = 0;
     }
 }
 ID3D11Buffer *BufferStorage11::getBuffer() const
 {
     return mBuffer;
 }
 }

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gfx/angle/src/libGLESv2/renderer/BufferStorage11.cpp@129ffea94266 (annotated)

gfx/angle/src/libGLESv2/renderer/BufferStorage11.cpp