1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/gfx/angle/src/libGLESv2/renderer/BufferStorage11.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,358 @@
1.4 +#include "precompiled.h"
1.5 +//
1.6 +// Copyright (c) 2013 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 +// BufferStorage11.cpp Defines the BufferStorage11 class.
1.12 +
1.13 +#include "libGLESv2/renderer/BufferStorage11.h"
1.14 +#include "libGLESv2/main.h"
1.15 +#include "libGLESv2/renderer/Renderer11.h"
1.16 +
1.17 +namespace rx
1.18 +{
1.19 +
1.20 +BufferStorage11::BufferStorage11(Renderer11 *renderer)
1.21 +{
1.22 + mRenderer = renderer;
1.23 +
1.24 + mStagingBuffer = NULL;
1.25 + mStagingBufferSize = 0;
1.26 +
1.27 + mBuffer = NULL;
1.28 + mBufferSize = 0;
1.29 +
1.30 + mSize = 0;
1.31 +
1.32 + mResolvedData = NULL;
1.33 + mResolvedDataSize = 0;
1.34 + mResolvedDataValid = false;
1.35 +
1.36 + mReadUsageCount = 0;
1.37 + mWriteUsageCount = 0;
1.38 +}
1.39 +
1.40 +BufferStorage11::~BufferStorage11()
1.41 +{
1.42 + if (mStagingBuffer)
1.43 + {
1.44 + mStagingBuffer->Release();
1.45 + mStagingBuffer = NULL;
1.46 + }
1.47 +
1.48 + if (mBuffer)
1.49 + {
1.50 + mBuffer->Release();
1.51 + mBuffer = NULL;
1.52 + }
1.53 +
1.54 + if (mResolvedData)
1.55 + {
1.56 + free(mResolvedData);
1.57 + mResolvedData = NULL;
1.58 + }
1.59 +}
1.60 +
1.61 +BufferStorage11 *BufferStorage11::makeBufferStorage11(BufferStorage *bufferStorage)
1.62 +{
1.63 + ASSERT(HAS_DYNAMIC_TYPE(BufferStorage11*, bufferStorage));
1.64 + return static_cast<BufferStorage11*>(bufferStorage);
1.65 +}
1.66 +
1.67 +void *BufferStorage11::getData()
1.68 +{
1.69 + if (!mResolvedDataValid)
1.70 + {
1.71 + ID3D11Device *device = mRenderer->getDevice();
1.72 + ID3D11DeviceContext *context = mRenderer->getDeviceContext();
1.73 + HRESULT result;
1.74 +
1.75 + if (!mStagingBuffer || mStagingBufferSize < mBufferSize)
1.76 + {
1.77 + if (mStagingBuffer)
1.78 + {
1.79 + mStagingBuffer->Release();
1.80 + mStagingBuffer = NULL;
1.81 + mStagingBufferSize = 0;
1.82 + }
1.83 +
1.84 + D3D11_BUFFER_DESC bufferDesc;
1.85 + bufferDesc.ByteWidth = mSize;
1.86 + bufferDesc.Usage = D3D11_USAGE_STAGING;
1.87 + bufferDesc.BindFlags = 0;
1.88 + bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
1.89 + bufferDesc.MiscFlags = 0;
1.90 + bufferDesc.StructureByteStride = 0;
1.91 +
1.92 + result = device->CreateBuffer(&bufferDesc, NULL, &mStagingBuffer);
1.93 + if (FAILED(result))
1.94 + {
1.95 + return gl::error(GL_OUT_OF_MEMORY, (void*)NULL);
1.96 + }
1.97 +
1.98 + mStagingBufferSize = bufferDesc.ByteWidth;
1.99 + }
1.100 +
1.101 + if (!mResolvedData || mResolvedDataSize < mBufferSize)
1.102 + {
1.103 + free(mResolvedData);
1.104 + mResolvedData = malloc(mSize);
1.105 + mResolvedDataSize = mSize;
1.106 + }
1.107 +
1.108 + D3D11_BOX srcBox;
1.109 + srcBox.left = 0;
1.110 + srcBox.right = mSize;
1.111 + srcBox.top = 0;
1.112 + srcBox.bottom = 1;
1.113 + srcBox.front = 0;
1.114 + srcBox.back = 1;
1.115 +
1.116 + context->CopySubresourceRegion(mStagingBuffer, 0, 0, 0, 0, mBuffer, 0, &srcBox);
1.117 +
1.118 + D3D11_MAPPED_SUBRESOURCE mappedResource;
1.119 + result = context->Map(mStagingBuffer, 0, D3D11_MAP_READ, 0, &mappedResource);
1.120 + if (FAILED(result))
1.121 + {
1.122 + return gl::error(GL_OUT_OF_MEMORY, (void*)NULL);
1.123 + }
1.124 +
1.125 + memcpy(mResolvedData, mappedResource.pData, mSize);
1.126 +
1.127 + context->Unmap(mStagingBuffer, 0);
1.128 +
1.129 + mResolvedDataValid = true;
1.130 + }
1.131 +
1.132 + mReadUsageCount = 0;
1.133 +
1.134 + return mResolvedData;
1.135 +}
1.136 +
1.137 +void BufferStorage11::setData(const void* data, unsigned int size, unsigned int offset)
1.138 +{
1.139 + ID3D11Device *device = mRenderer->getDevice();
1.140 + ID3D11DeviceContext *context = mRenderer->getDeviceContext();
1.141 + HRESULT result;
1.142 +
1.143 + unsigned int requiredBufferSize = size + offset;
1.144 + unsigned int requiredStagingSize = size;
1.145 + bool directInitialization = offset == 0 && (!mBuffer || mBufferSize < size + offset);
1.146 +
1.147 + if (!directInitialization)
1.148 + {
1.149 + if (!mStagingBuffer || mStagingBufferSize < requiredStagingSize)
1.150 + {
1.151 + if (mStagingBuffer)
1.152 + {
1.153 + mStagingBuffer->Release();
1.154 + mStagingBuffer = NULL;
1.155 + mStagingBufferSize = 0;
1.156 + }
1.157 +
1.158 + D3D11_BUFFER_DESC bufferDesc;
1.159 + bufferDesc.ByteWidth = size;
1.160 + bufferDesc.Usage = D3D11_USAGE_STAGING;
1.161 + bufferDesc.BindFlags = 0;
1.162 + bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_READ | D3D11_CPU_ACCESS_WRITE;
1.163 + bufferDesc.MiscFlags = 0;
1.164 + bufferDesc.StructureByteStride = 0;
1.165 +
1.166 + if (data)
1.167 + {
1.168 + D3D11_SUBRESOURCE_DATA initialData;
1.169 + initialData.pSysMem = data;
1.170 + initialData.SysMemPitch = size;
1.171 + initialData.SysMemSlicePitch = 0;
1.172 +
1.173 + result = device->CreateBuffer(&bufferDesc, &initialData, &mStagingBuffer);
1.174 + }
1.175 + else
1.176 + {
1.177 + result = device->CreateBuffer(&bufferDesc, NULL, &mStagingBuffer);
1.178 + }
1.179 +
1.180 + if (FAILED(result))
1.181 + {
1.182 + return gl::error(GL_OUT_OF_MEMORY);
1.183 + }
1.184 +
1.185 + mStagingBufferSize = size;
1.186 + }
1.187 + else if (data)
1.188 + {
1.189 + D3D11_MAPPED_SUBRESOURCE mappedResource;
1.190 + result = context->Map(mStagingBuffer, 0, D3D11_MAP_WRITE, 0, &mappedResource);
1.191 + if (FAILED(result))
1.192 + {
1.193 + return gl::error(GL_OUT_OF_MEMORY);
1.194 + }
1.195 +
1.196 + memcpy(mappedResource.pData, data, size);
1.197 +
1.198 + context->Unmap(mStagingBuffer, 0);
1.199 + }
1.200 + }
1.201 +
1.202 + if (!mBuffer || mBufferSize < size + offset)
1.203 + {
1.204 + D3D11_BUFFER_DESC bufferDesc;
1.205 + bufferDesc.ByteWidth = requiredBufferSize;
1.206 + bufferDesc.Usage = D3D11_USAGE_DEFAULT;
1.207 + bufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER | D3D11_BIND_INDEX_BUFFER;
1.208 + bufferDesc.CPUAccessFlags = 0;
1.209 + bufferDesc.MiscFlags = 0;
1.210 + bufferDesc.StructureByteStride = 0;
1.211 +
1.212 + if (directInitialization)
1.213 + {
1.214 + // Since the data will fill the entire buffer (being larger than the initial size and having
1.215 + // no offset), the buffer can be initialized with the data so no staging buffer is required
1.216 +
1.217 + // No longer need the old buffer
1.218 + if (mBuffer)
1.219 + {
1.220 + mBuffer->Release();
1.221 + mBuffer = NULL;
1.222 + mBufferSize = 0;
1.223 + }
1.224 +
1.225 + if (data)
1.226 + {
1.227 + D3D11_SUBRESOURCE_DATA initialData;
1.228 + initialData.pSysMem = data;
1.229 + initialData.SysMemPitch = size;
1.230 + initialData.SysMemSlicePitch = 0;
1.231 +
1.232 + result = device->CreateBuffer(&bufferDesc, &initialData, &mBuffer);
1.233 + }
1.234 + else
1.235 + {
1.236 + result = device->CreateBuffer(&bufferDesc, NULL, &mBuffer);
1.237 + }
1.238 +
1.239 + if (FAILED(result))
1.240 + {
1.241 + return gl::error(GL_OUT_OF_MEMORY);
1.242 + }
1.243 + }
1.244 + else if (mBuffer && offset > 0)
1.245 + {
1.246 + // If offset is greater than zero and the buffer is non-null, need to preserve the data from
1.247 + // the old buffer up to offset
1.248 + ID3D11Buffer *newBuffer = NULL;
1.249 +
1.250 + result = device->CreateBuffer(&bufferDesc, NULL, &newBuffer);
1.251 + if (FAILED(result))
1.252 + {
1.253 + return gl::error(GL_OUT_OF_MEMORY);
1.254 + }
1.255 +
1.256 + D3D11_BOX srcBox;
1.257 + srcBox.left = 0;
1.258 + srcBox.right = std::min(offset, mBufferSize);
1.259 + srcBox.top = 0;
1.260 + srcBox.bottom = 1;
1.261 + srcBox.front = 0;
1.262 + srcBox.back = 1;
1.263 +
1.264 + context->CopySubresourceRegion(newBuffer, 0, 0, 0, 0, mBuffer, 0, &srcBox);
1.265 +
1.266 + mBuffer->Release();
1.267 + mBuffer = newBuffer;
1.268 + }
1.269 + else
1.270 + {
1.271 + // Simple case, nothing needs to be copied from the old buffer to the new one, just create
1.272 + // a new buffer
1.273 +
1.274 + // No longer need the old buffer
1.275 + if (mBuffer)
1.276 + {
1.277 + mBuffer->Release();
1.278 + mBuffer = NULL;
1.279 + mBufferSize = 0;
1.280 + }
1.281 +
1.282 + // Create a new buffer for data storage
1.283 + result = device->CreateBuffer(&bufferDesc, NULL, &mBuffer);
1.284 + if (FAILED(result))
1.285 + {
1.286 + return gl::error(GL_OUT_OF_MEMORY);
1.287 + }
1.288 + }
1.289 +
1.290 + updateSerial();
1.291 + mBufferSize = bufferDesc.ByteWidth;
1.292 + }
1.293 +
1.294 + if (!directInitialization)
1.295 + {
1.296 + ASSERT(mStagingBuffer && mStagingBufferSize >= requiredStagingSize);
1.297 +
1.298 + // Data is already put into the staging buffer, copy it over to the data buffer
1.299 + D3D11_BOX srcBox;
1.300 + srcBox.left = 0;
1.301 + srcBox.right = size;
1.302 + srcBox.top = 0;
1.303 + srcBox.bottom = 1;
1.304 + srcBox.front = 0;
1.305 + srcBox.back = 1;
1.306 +
1.307 + context->CopySubresourceRegion(mBuffer, 0, offset, 0, 0, mStagingBuffer, 0, &srcBox);
1.308 + }
1.309 +
1.310 + mSize = std::max(mSize, offset + size);
1.311 +
1.312 + mWriteUsageCount = 0;
1.313 +
1.314 + mResolvedDataValid = false;
1.315 +}
1.316 +
1.317 +void BufferStorage11::clear()
1.318 +{
1.319 + mResolvedDataValid = false;
1.320 + mSize = 0;
1.321 +}
1.322 +
1.323 +unsigned int BufferStorage11::getSize() const
1.324 +{
1.325 + return mSize;
1.326 +}
1.327 +
1.328 +bool BufferStorage11::supportsDirectBinding() const
1.329 +{
1.330 + return true;
1.331 +}
1.332 +
1.333 +void BufferStorage11::markBufferUsage()
1.334 +{
1.335 + mReadUsageCount++;
1.336 + mWriteUsageCount++;
1.337 +
1.338 + static const unsigned int usageLimit = 5;
1.339 +
1.340 + if (mReadUsageCount > usageLimit && mResolvedData)
1.341 + {
1.342 + free(mResolvedData);
1.343 + mResolvedData = NULL;
1.344 + mResolvedDataSize = 0;
1.345 + mResolvedDataValid = false;
1.346 + }
1.347 +
1.348 + if (mReadUsageCount > usageLimit && mWriteUsageCount > usageLimit && mStagingBuffer)
1.349 + {
1.350 + mStagingBuffer->Release();
1.351 + mStagingBuffer = NULL;
1.352 + mStagingBufferSize = 0;
1.353 + }
1.354 +}
1.355 +
1.356 +ID3D11Buffer *BufferStorage11::getBuffer() const
1.357 +{
1.358 + return mBuffer;
1.359 +}
1.360 +
1.361 +}
