Function CopyBufferToTextureVulkan

libraries/ntc-utils/src/BufferLoading.cpp:209–250

}

bool CopyBufferToTextureVulkan(nvrhi::ICommandList* commandList,
    nvrhi::IBuffer* srcBuffer,
    size_t srcOffset,
    ntc::LatentTextureFootprint const& footprint,
    nvrhi::ITexture* dstTexture,
    int mipLevel,
    int arrayLayer)
{
#if NTC_WITH_VULKAN
    // Use a buffer-to-image copy with raw Vulkan API beacuse there is no way to do that through NVRHI.
    // The closest feature a copyTexture function taking a StagingTexture, but it requires an actual staging texture,
    // which we don't need here (no CPU access necessary), and NVRHI's StagingTexture doesn't provide access
    // to the underlying buffer and its subresource placement.

    vk::BufferImageCopy region = vk::BufferImageCopy()
        .setBufferOffset(srcOffset)
        .setImageExtent(vk::Extent3D()
            .setWidth(footprint.width)
            .setHeight(footprint.height)
            .setDepth(1))
        .setImageSubresource(vk::ImageSubresourceLayers()
            .setAspectMask(vk::ImageAspectFlagBits::eColor)
            .setBaseArrayLayer(arrayLayer)
            .setMipLevel(mipLevel)
            .setLayerCount(1));

    vk::CommandBuffer vkCmdBuf = vk::CommandBuffer(commandList->getNativeObject(nvrhi::ObjectTypes::VK_CommandBuffer));
    assert(vkCmdBuf);
    vk::Buffer vkSrcBuffer = vk::Buffer(srcBuffer->getNativeObject(nvrhi::ObjectTypes::VK_Buffer));
    assert(vkSrcBuffer);
    vk::Image vkDstImage = vk::Image(dstTexture->getNativeObject(nvrhi::ObjectTypes::VK_Image));
    assert(vkDstImage);

    // Note: the image is already in the TransferDstOptimal layout, because we manage latent texture states
    // explicitly, and they're transitioned to the CopyDest state in ExecuteTextureLoadingTasks(...)
    vkCmdBuf.copyBufferToImage(vkSrcBuffer, vkDstImage, vk::ImageLayout::eTransferDstOptimal, 1, &region);
    
    return true;
#else
    return false;
#endif
}

bool ExecuteBufferLoadingTasks(
    nvrhi::IDevice* device,