download_texture_buffer()

std::optional< ImageData > MayaFlux::IO::download_texture_buffer

(

const std::shared_ptr< Buffers::TextureBuffer > &

buffer

)

Download a TextureBuffer's GPU texture into host ImageData.

Convenience wrapper over download_image() that pulls the VKImage from TextureBuffer::get_gpu_texture(). Returns nullopt if the texture is not yet allocated (buffer has not been processed at least once).

Definition at line 124 of file ImageExport.cpp.

{
    if (!buffer) {
        MF_ERROR(Journal::Component::IO, Journal::Context::FileIO,
            "download_texture_buffer: null buffer");
        return std::nullopt;
    }
 
    auto image = buffer->get_gpu_texture();
    if (!image) {
        MF_ERROR(Journal::Component::IO, Journal::Context::FileIO,
            "download_texture_buffer: buffer has no GPU texture yet "
            "(has the buffer been processed at least once?)");
        return std::nullopt;
    }
 
    return download_image(image);
}

References download_image(), MayaFlux::Journal::FileIO, image, MayaFlux::Journal::IO, and MF_ERROR.

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