1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/libGLESv2/renderer/IndexBuffer11.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,183 @@
1.4 +#include "precompiled.h"
1.5 +//
1.6 +// Copyright (c) 2012 The ANGLE Project Authors. All rights reserved.
1.7 +// Use of this source code is governed by a BSD-style license that can be
1.8 +// found in the LICENSE file.
1.9 +//
1.10 +
1.11 +// IndexBuffer11.cpp: Defines the D3D11 IndexBuffer implementation.
1.12 +
1.13 +#include "libGLESv2/renderer/IndexBuffer11.h"
1.14 +#include "libGLESv2/renderer/Renderer11.h"
1.15 +
1.16 +namespace rx
1.17 +{
1.18 +
1.19 +IndexBuffer11::IndexBuffer11(Renderer11 *const renderer) : mRenderer(renderer)
1.20 +{
1.21 + mBuffer = NULL;
1.22 + mBufferSize = 0;
1.23 + mDynamicUsage = false;
1.24 +}
1.25 +
1.26 +IndexBuffer11::~IndexBuffer11()
1.27 +{
1.28 + if (mBuffer)
1.29 + {
1.30 + mBuffer->Release();
1.31 + mBuffer = NULL;
1.32 + }
1.33 +}
1.34 +
1.35 +bool IndexBuffer11::initialize(unsigned int bufferSize, GLenum indexType, bool dynamic)
1.36 +{
1.37 + if (mBuffer)
1.38 + {
1.39 + mBuffer->Release();
1.40 + mBuffer = NULL;
1.41 + }
1.42 +
1.43 + updateSerial();
1.44 +
1.45 + if (bufferSize > 0)
1.46 + {
1.47 + ID3D11Device* dxDevice = mRenderer->getDevice();
1.48 +
1.49 + D3D11_BUFFER_DESC bufferDesc;
1.50 + bufferDesc.ByteWidth = bufferSize;
1.51 + bufferDesc.Usage = D3D11_USAGE_DYNAMIC;
1.52 + bufferDesc.BindFlags = D3D11_BIND_INDEX_BUFFER;
1.53 + bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
1.54 + bufferDesc.MiscFlags = 0;
1.55 + bufferDesc.StructureByteStride = 0;
1.56 +
1.57 + HRESULT result = dxDevice->CreateBuffer(&bufferDesc, NULL, &mBuffer);
1.58 + if (FAILED(result))
1.59 + {
1.60 + return false;
1.61 + }
1.62 + }
1.63 +
1.64 + mBufferSize = bufferSize;
1.65 + mIndexType = indexType;
1.66 + mDynamicUsage = dynamic;
1.67 +
1.68 + return true;
1.69 +}
1.70 +
1.71 +IndexBuffer11 *IndexBuffer11::makeIndexBuffer11(IndexBuffer *indexBuffer)
1.72 +{
1.73 + ASSERT(HAS_DYNAMIC_TYPE(IndexBuffer11*, indexBuffer));
1.74 + return static_cast<IndexBuffer11*>(indexBuffer);
1.75 +}
1.76 +
1.77 +bool IndexBuffer11::mapBuffer(unsigned int offset, unsigned int size, void** outMappedMemory)
1.78 +{
1.79 + if (mBuffer)
1.80 + {
1.81 + // Check for integer overflows and out-out-bounds map requests
1.82 + if (offset + size < offset || offset + size > mBufferSize)
1.83 + {
1.84 + ERR("Index buffer map range is not inside the buffer.");
1.85 + return false;
1.86 + }
1.87 +
1.88 + ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
1.89 +
1.90 + D3D11_MAPPED_SUBRESOURCE mappedResource;
1.91 + HRESULT result = dxContext->Map(mBuffer, 0, D3D11_MAP_WRITE_NO_OVERWRITE, 0, &mappedResource);
1.92 + if (FAILED(result))
1.93 + {
1.94 + ERR("Index buffer map failed with error 0x%08x", result);
1.95 + return false;
1.96 + }
1.97 +
1.98 + *outMappedMemory = reinterpret_cast<char*>(mappedResource.pData) + offset;
1.99 + return true;
1.100 + }
1.101 + else
1.102 + {
1.103 + ERR("Index buffer not initialized.");
1.104 + return false;
1.105 + }
1.106 +}
1.107 +
1.108 +bool IndexBuffer11::unmapBuffer()
1.109 +{
1.110 + if (mBuffer)
1.111 + {
1.112 + ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
1.113 + dxContext->Unmap(mBuffer, 0);
1.114 + return true;
1.115 + }
1.116 + else
1.117 + {
1.118 + ERR("Index buffer not initialized.");
1.119 + return false;
1.120 + }
1.121 +}
1.122 +
1.123 +GLenum IndexBuffer11::getIndexType() const
1.124 +{
1.125 + return mIndexType;
1.126 +}
1.127 +
1.128 +unsigned int IndexBuffer11::getBufferSize() const
1.129 +{
1.130 + return mBufferSize;
1.131 +}
1.132 +
1.133 +bool IndexBuffer11::setSize(unsigned int bufferSize, GLenum indexType)
1.134 +{
1.135 + if (bufferSize > mBufferSize || indexType != mIndexType)
1.136 + {
1.137 + return initialize(bufferSize, indexType, mDynamicUsage);
1.138 + }
1.139 + else
1.140 + {
1.141 + return true;
1.142 + }
1.143 +}
1.144 +
1.145 +bool IndexBuffer11::discard()
1.146 +{
1.147 + if (mBuffer)
1.148 + {
1.149 + ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
1.150 +
1.151 + D3D11_MAPPED_SUBRESOURCE mappedResource;
1.152 + HRESULT result = dxContext->Map(mBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
1.153 + if (FAILED(result))
1.154 + {
1.155 + ERR("Index buffer map failed with error 0x%08x", result);
1.156 + return false;
1.157 + }
1.158 +
1.159 + dxContext->Unmap(mBuffer, 0);
1.160 +
1.161 + return true;
1.162 + }
1.163 + else
1.164 + {
1.165 + ERR("Index buffer not initialized.");
1.166 + return false;
1.167 + }
1.168 +}
1.169 +
1.170 +DXGI_FORMAT IndexBuffer11::getIndexFormat() const
1.171 +{
1.172 + switch (mIndexType)
1.173 + {
1.174 + case GL_UNSIGNED_BYTE: return DXGI_FORMAT_R16_UINT;
1.175 + case GL_UNSIGNED_SHORT: return DXGI_FORMAT_R16_UINT;
1.176 + case GL_UNSIGNED_INT: return DXGI_FORMAT_R32_UINT;
1.177 + default: UNREACHABLE(); return DXGI_FORMAT_UNKNOWN;
1.178 + }
1.179 +}
1.180 +
1.181 +ID3D11Buffer *IndexBuffer11::getBuffer() const
1.182 +{
1.183 + return mBuffer;
1.184 +}
1.185 +
1.186 +}
1.187 \ No newline at end of file
