| 965 | |
| 966 | return true; |
| 967 | } |
| 968 | |
| 969 | bool ComputePsnrForBlockCompressedTextureSet( |
| 970 | ntc::IContext* context, |
| 971 | ntc::ITextureSetMetadata* textureSetMetadata, |
| 972 | nvrhi::IDevice* device, |
| 973 | nvrhi::ICommandList* commandList, |
| 974 | GraphicsResourcesForTextureSet const& graphicsResources, |
| 975 | float& outTargetPsnr) |
| 976 | { |
| 977 | assert(device); |
| 978 | |
| 979 | GraphicsBlockCompressionPass blockCompressionPass(device, 1); |
| 980 | if (!blockCompressionPass.Init()) |
| 981 | return false; |
| 982 | |
| 983 | GraphicsImageDifferencePass compareImagesPass(device); |
| 984 | if (!compareImagesPass.Init()) |
| 985 | return false; |
| 986 | |
| 987 | std::vector<float> perChannelMSE; |
| 988 | |
| 989 | float const alphaThreshold = 1.f / 255.f; |
| 990 | float combinedBcBitsPerPixel = 0; |
| 991 | |
| 992 | for (int textureIndex = 0; textureIndex < textureSetMetadata->GetTextureCount(); ++textureIndex) |
| 993 | { |
| 994 | ntc::ITextureMetadata* textureMetadata = textureSetMetadata->GetTexture(textureIndex); |
| 995 | ntc::BlockCompressedFormat const bcFormat = textureMetadata->GetBlockCompressedFormat(); |
| 996 | int const numChannels = textureMetadata->GetNumChannels(); |
| 997 | if (textureMetadata->GetBlockCompressedFormat() == ntc::BlockCompressedFormat::None) |
| 998 | continue; |
| 999 | |
| 1000 | int const bytesPerBlock = GetBcFormatDefinition(textureMetadata->GetBlockCompressedFormat())->bytesPerBlock; |
| 1001 | combinedBcBitsPerPixel += float(bytesPerBlock) * 0.5f; // (* 8 bits / 16 pixels) |
| 1002 | |
| 1003 | GraphicsResourcesForTexture const& textureResources = graphicsResources.perTexture[textureIndex]; |
| 1004 | |
| 1005 | nvrhi::TextureDesc const& textureDesc = textureResources.color->getDesc(); |
| 1006 | int const width = int(textureDesc.width); |
| 1007 | int const height = int(textureDesc.height); |
| 1008 | |
| 1009 | // Make the compression pass |
| 1010 | ntc::MakeBlockCompressionComputePassParameters compressParams; |
| 1011 | compressParams.srcRect.width = width; |
| 1012 | compressParams.srcRect.height = height; |
| 1013 | compressParams.dstFormat = bcFormat; |
| 1014 | compressParams.alphaThreshold = alphaThreshold; |
| 1015 | ntc::ComputePassDesc blockCompressionComputePass; |
| 1016 | ntc::Status ntcStatus = context->MakeBlockCompressionComputePass(compressParams, &blockCompressionComputePass); |
| 1017 | CHECK_NTC_RESULT("MakeBlockCompressionComputePass"); |
| 1018 | |
| 1019 | // Make the image comparison pass |
| 1020 | ntc::MakeImageDifferenceComputePassParameters differenceParams; |
| 1021 | differenceParams.extent.width = width; |
| 1022 | differenceParams.extent.height = height; |
| 1023 | differenceParams.useAlphaThreshold = (bcFormat == ntc::BlockCompressedFormat::BC1) && (numChannels == 4); |
| 1024 | differenceParams.alphaThreshold = alphaThreshold; |
no test coverage detected