| 239 | } |
| 240 | |
| 241 | void BSDFViewer::readPixelData() |
| 242 | { |
| 243 | if (mPixelDataAvailable) |
| 244 | { |
| 245 | mpFence->wait(); |
| 246 | FALCOR_ASSERT(mpPixelStagingBuffer); |
| 247 | mPixelData = *static_cast<const PixelData*>(mpPixelStagingBuffer->map()); |
| 248 | mpPixelStagingBuffer->unmap(); |
| 249 | |
| 250 | mPixelDataAvailable = false; |
| 251 | mPixelDataValid = true; |
| 252 | |
| 253 | // Update parameters from values at selected pixel. |
| 254 | mParams.texCoords = mPixelData.texC; |
| 255 | } |
| 256 | } |
| 257 | |
| 258 | void BSDFViewer::renderUI(Gui::Widgets& widget) |
| 259 | { |