Function ComputeBlockCompressedImageError

tools/cli/GraphicsPasses.cpp:514–570

    auto dstSlice = nvrhi::TextureSlice().setWidth(width).setHeight(height);
    commandList->copyTexture(textureResources.bc, dstSlice, textureResources.blocks, srcSlice);
}

bool ComputeBlockCompressedImageError(
    ntc::IContext* context,
    GraphicsImageDifferencePass& compareImagesPass,
    nvrhi::IDevice* device,
    nvrhi::ICommandList* commandList,
    GraphicsResourcesForTexture const& textureResources,
    uint32_t width,
    uint32_t height,
    int mipLevel,
    bool reuseCompressedData,
    bool useAlphaThreshold,
    float alphaThreshold,
    bool useMSLE,
    float* outOverallMSE,
    float* outOverallPSNR,
    int channels = 4)
{
    // Obtain the pass descriptor from NTC
    ntc::MakeImageDifferenceComputePassParameters params;
    params.extent.width = width;
    params.extent.height = height;
    params.useAlphaThreshold = useAlphaThreshold;
    params.alphaThreshold = alphaThreshold;
    params.useMSLE = useMSLE;
    ntc::ComputePassDesc computePass{};
    ntc::Status ntcStatus = context->MakeImageDifferenceComputePass(params, &computePass);
    CHECK_NTC_RESULT("MakeImageDifferenceComputePass");

    // Record the command list
    commandList->open();

    if (!reuseCompressedData)
    {
        CopyBlocksIntoBCTexture(commandList, textureResources, width, height);
    }

    if (!compareImagesPass.ExecuteComputePass(commandList,  computePass,
        textureResources.bc, 0, textureResources.color, mipLevel, 0))
    {
        commandList->close();
        return false;
    }

    commandList->close();

    // Execute the command list and read the outputs
    device->executeCommandList(commandList);
    device->waitForIdle();

    if (!compareImagesPass.ReadResults())
        return false;

    if (!compareImagesPass.GetQueryResult(0, nullptr, outOverallMSE, outOverallPSNR, channels))
        return false;

    return true;