gl::Error Buffer11::NativeStorage::resize(size_t size, bool preserveData)
{
ID3D11Device *device = mRenderer->getDevice();
ID3D11DeviceContext *context = mRenderer->getDeviceContext();
D3D11_BUFFER_DESC bufferDesc;
fillBufferDesc(&bufferDesc, mRenderer, mUsage, size);
ID3D11Buffer *newBuffer;
HRESULT result = device->CreateBuffer(&bufferDesc, NULL, &newBuffer);
if (FAILED(result))
{
return gl::Error(GL_OUT_OF_MEMORY, "Failed to create internal buffer, result: 0x%X.", result);
}
if (mNativeStorage && preserveData)
{
// We don't call resize if the buffer is big enough already.
ASSERT(mBufferSize <= size);
D3D11_BOX srcBox;
srcBox.left = 0;
srcBox.right = mBufferSize;
srcBox.top = 0;
srcBox.bottom = 1;
srcBox.front = 0;
srcBox.back = 1;
context->CopySubresourceRegion(newBuffer, 0, 0, 0, 0, mNativeStorage, 0, &srcBox);
}
// No longer need the old buffer
SafeRelease(mNativeStorage);
mNativeStorage = newBuffer;
mBufferSize = bufferDesc.ByteWidth;
return gl::Error(GL_NO_ERROR);
}
bool BufferStorage11::NativeBuffer11::resize(size_t size, bool preserveData)
{
ID3D11Device *device = mRenderer->getDevice();
ID3D11DeviceContext *context = mRenderer->getDeviceContext();
D3D11_BUFFER_DESC bufferDesc;
fillBufferDesc(&bufferDesc, mRenderer, mUsage, size);
ID3D11Buffer *newBuffer;
HRESULT result = device->CreateBuffer(&bufferDesc, NULL, &newBuffer);
if (FAILED(result))
{
return gl::error(GL_OUT_OF_MEMORY, false);
}
if (mNativeBuffer && preserveData)
{
D3D11_BOX srcBox;
srcBox.left = 0;
srcBox.right = size;
srcBox.top = 0;
srcBox.bottom = 1;
srcBox.front = 0;
srcBox.back = 1;
context->CopySubresourceRegion(newBuffer, 0, 0, 0, 0, mNativeBuffer, 0, &srcBox);
}
// No longer need the old buffer
SafeRelease(mNativeBuffer);
mNativeBuffer = newBuffer;
mBufferSize = bufferDesc.ByteWidth;
return true;
}
