ludic/changes/streamline-dlss-reflex.md

bump: minor type: feat NVIDIA DLSS super resolution and Reflex on the Vulkan renderer — through NVIDIA Streamline 2.14.1.

• The loader — on Windows Vk.open() takes sl.interposer.dll beside the executable in place of vulkan-1.dll when a program asks (Vk.sl_prefer), falling back to plain Vulkan without it; the sl* exports and feature functions are reachable from Ludic.
• render3d — r3d_dlss(mode) upscales the lit HDR frame before bloom and the tonemap, jittered on a Halton cycle, with preset K in every mode (the default M cost 18 ms a frame at 4K on an RTX 3070 Ti); r3d_dlss_render_w/h give the size to render at. r3d_reflex(mode) sleeps each frame and marks simulation, submit and present. R3D_DLSS, R3D_REFLEX, R3D_DLSS_PRESET, R3D_SL_LOG for tests.
• Commands the interposer lacks — it exports no vkSetHdrMetadataEXT, vkCmdDrawMeshTasksEXT or acceleration-structure command; Vk.has checks one and vkGetDeviceProcAddr reaches it.