The Vulkan backend is two files. gpu_vk.ludic is the device, memory and one-shot commands,
pure Vulkan, and still runs on its own (vk_device.ludic). gpu_vk_res.ludic is the resources in
the renderer's vocabulary - OpenGL's names for formats, filters and blend factors, which only
exist where Gl.* is named - starting with the format table. r3d.ludic imports both after
gpu.ludic; nothing calls them yet.
OpenGL frames byte-identical at the five viewpoints; 59 self-tests pass; VKDEVICE OK.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
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