| #include "precompiled.h" |
| // |
| // Copyright (c) 2012 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. |
| // |
| |
| // IndexBuffer11.cpp: Defines the D3D11 IndexBuffer implementation. |
| |
| #include "libGLESv2/renderer/d3d11/IndexBuffer11.h" |
| #include "libGLESv2/renderer/d3d11/Renderer11.h" |
| |
| namespace rx |
| { |
| |
| IndexBuffer11::IndexBuffer11(Renderer11 *const renderer) : mRenderer(renderer) |
| { |
| mBuffer = NULL; |
| mBufferSize = 0; |
| mDynamicUsage = false; |
| } |
| |
| IndexBuffer11::~IndexBuffer11() |
| { |
| SafeRelease(mBuffer); |
| } |
| |
| bool IndexBuffer11::initialize(unsigned int bufferSize, GLenum indexType, bool dynamic) |
| { |
| SafeRelease(mBuffer); |
| |
| updateSerial(); |
| |
| if (bufferSize > 0) |
| { |
| ID3D11Device* dxDevice = mRenderer->getDevice(); |
| |
| D3D11_BUFFER_DESC bufferDesc; |
| bufferDesc.ByteWidth = bufferSize; |
| bufferDesc.Usage = D3D11_USAGE_DYNAMIC; |
| bufferDesc.BindFlags = D3D11_BIND_INDEX_BUFFER; |
| bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE; |
| bufferDesc.MiscFlags = 0; |
| bufferDesc.StructureByteStride = 0; |
| |
| HRESULT result = dxDevice->CreateBuffer(&bufferDesc, NULL, &mBuffer); |
| if (FAILED(result)) |
| { |
| return false; |
| } |
| } |
| |
| mBufferSize = bufferSize; |
| mIndexType = indexType; |
| mDynamicUsage = dynamic; |
| |
| return true; |
| } |
| |
| IndexBuffer11 *IndexBuffer11::makeIndexBuffer11(IndexBuffer *indexBuffer) |
| { |
| ASSERT(HAS_DYNAMIC_TYPE(IndexBuffer11*, indexBuffer)); |
| return static_cast<IndexBuffer11*>(indexBuffer); |
| } |
| |
| bool IndexBuffer11::mapBuffer(unsigned int offset, unsigned int size, void** outMappedMemory) |
| { |
| if (mBuffer) |
| { |
| // Check for integer overflows and out-out-bounds map requests |
| if (offset + size < offset || offset + size > mBufferSize) |
| { |
| ERR("Index buffer map range is not inside the buffer."); |
| return false; |
| } |
| |
| ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext(); |
| |
| D3D11_MAPPED_SUBRESOURCE mappedResource; |
| HRESULT result = dxContext->Map(mBuffer, 0, D3D11_MAP_WRITE_NO_OVERWRITE, 0, &mappedResource); |
| if (FAILED(result)) |
| { |
| ERR("Index buffer map failed with error 0x%08x", result); |
| return false; |
| } |
| |
| *outMappedMemory = reinterpret_cast<char*>(mappedResource.pData) + offset; |
| return true; |
| } |
| else |
| { |
| ERR("Index buffer not initialized."); |
| return false; |
| } |
| } |
| |
| bool IndexBuffer11::unmapBuffer() |
| { |
| if (mBuffer) |
| { |
| ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext(); |
| dxContext->Unmap(mBuffer, 0); |
| return true; |
| } |
| else |
| { |
| ERR("Index buffer not initialized."); |
| return false; |
| } |
| } |
| |
| GLenum IndexBuffer11::getIndexType() const |
| { |
| return mIndexType; |
| } |
| |
| unsigned int IndexBuffer11::getBufferSize() const |
| { |
| return mBufferSize; |
| } |
| |
| bool IndexBuffer11::setSize(unsigned int bufferSize, GLenum indexType) |
| { |
| if (bufferSize > mBufferSize || indexType != mIndexType) |
| { |
| return initialize(bufferSize, indexType, mDynamicUsage); |
| } |
| else |
| { |
| return true; |
| } |
| } |
| |
| bool IndexBuffer11::discard() |
| { |
| if (mBuffer) |
| { |
| ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext(); |
| |
| D3D11_MAPPED_SUBRESOURCE mappedResource; |
| HRESULT result = dxContext->Map(mBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource); |
| if (FAILED(result)) |
| { |
| ERR("Index buffer map failed with error 0x%08x", result); |
| return false; |
| } |
| |
| dxContext->Unmap(mBuffer, 0); |
| |
| return true; |
| } |
| else |
| { |
| ERR("Index buffer not initialized."); |
| return false; |
| } |
| } |
| |
| DXGI_FORMAT IndexBuffer11::getIndexFormat() const |
| { |
| switch (mIndexType) |
| { |
| case GL_UNSIGNED_BYTE: return DXGI_FORMAT_R16_UINT; |
| case GL_UNSIGNED_SHORT: return DXGI_FORMAT_R16_UINT; |
| case GL_UNSIGNED_INT: return DXGI_FORMAT_R32_UINT; |
| default: UNREACHABLE(); return DXGI_FORMAT_UNKNOWN; |
| } |
| } |
| |
| ID3D11Buffer *IndexBuffer11::getBuffer() const |
| { |
| return mBuffer; |
| } |
| |
| } |