| 33 | } |
| 34 | |
| 35 | void FillBufferLoadingTasksForBC( |
| 36 | ntc::TextureSetDesc const& textureSetDesc, |
| 37 | ntc::ITextureMetadata* textureMetadata, |
| 38 | std::vector<BufferLoadingTask>& tasks, |
| 39 | bool gpuDecompressionSupported, |
| 40 | nvrhi::GraphicsAPI graphicsAPI, |
| 41 | size_t& stagingBufferSize, |
| 42 | size_t& tempBufferSize, |
| 43 | size_t& finalBufferSize) |
| 44 | { |
| 45 | tasks.clear(); |
| 46 | tasks.resize(textureSetDesc.mips); |
| 47 | |
| 48 | stagingBufferSize = 0; |
| 49 | tempBufferSize = 0; |
| 50 | finalBufferSize = 0; |
| 51 | |
| 52 | bool const enableVkDecompression = gpuDecompressionSupported && graphicsAPI == nvrhi::GraphicsAPI::VULKAN; |
| 53 | bool const enableDStorage = gpuDecompressionSupported && graphicsAPI == nvrhi::GraphicsAPI::D3D12; |
| 54 | |
| 55 | for (int mipLevel = 0; mipLevel < textureSetDesc.mips; ++mipLevel) |
| 56 | { |
| 57 | BufferLoadingTask& task = tasks[mipLevel]; |
| 58 | |
| 59 | textureMetadata->GetBC7ModeBuffer(mipLevel, &task.directCopySource, &task.directCopySize); |
| 60 | if (task.directCopySize) |
| 61 | { |
| 62 | task.pipeline = BufferLoadingPipeline::DirectCopy; |
| 63 | AppendBufferRange(task.stagingBufferRange, stagingBufferSize, task.directCopySize); |
| 64 | AppendBufferRange(task.finalBufferRange, finalBufferSize, task.directCopySize); |
| 65 | continue; |
| 66 | } |
| 67 | |
| 68 | task.footprint = textureMetadata->GetBC7ModeBufferFootprint(mipLevel); |
| 69 | if (task.footprint.uncompressedSize == 0) |
| 70 | continue; |
| 71 | |
| 72 | if (task.footprint.compressionType == ntc::CompressionType::None) |
| 73 | { |
| 74 | task.pipeline = BufferLoadingPipeline::ReadUncompressed; |
| 75 | AppendBufferRange(task.stagingBufferRange, stagingBufferSize, task.footprint.rangeInStream.size); |
| 76 | task.readIntoStagingBuffer = true; |
| 77 | } |
| 78 | else if (task.footprint.compressionType == ntc::CompressionType::GDeflate) |
| 79 | { |
| 80 | if (enableVkDecompression) |
| 81 | { |
| 82 | task.pipeline = BufferLoadingPipeline::DecompressWithVk; |
| 83 | |
| 84 | // GDeflate header is read into a CPU buffer |
| 85 | size_t const headerSize = ntc::GetGDeflateHeaderSize(task.footprint.uncompressedSize); |
| 86 | task.compressedData.resize(headerSize); |
| 87 | task.readIntoCpuBuffer = true; |
| 88 | |
| 89 | // Actual compressed data is read directly into the staging buffer |
| 90 | assert(task.footprint.rangeInStream.size > headerSize); |
| 91 | size_t const uploadSize = task.footprint.rangeInStream.size - headerSize; |
| 92 | AppendBufferRange(task.stagingBufferRange, stagingBufferSize, uploadSize); |
no test coverage detected