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spoopyghosty0 2a705bc6d1 frame.gl_multiview_fbo: single-view twins for multiview programs drawn into flat framebuffers (GitHub #77)
Mesa enforces OVR_multiview's rule that a draw's program declares as many views as the draw framebuffer has and drops the draw silently; Doom3Quest compiles every vertex shader with layout(num_views=2) and draws its HUD/PDA into 2D-texture FBOs, which stay black on the Frame.

native/glmv (libfpglmv.so, same length as libGLESv3.so): the engine library's dlopen string is rewritten to it and it becomes the first DT_NEEDED. It records stage sources at link time and, when a multiview program draws into a framebuffer without views, draws with a lazily built single-view twin (num_views layout blanked, gl_ViewID_OVR -> 0u; attribute locations, block bindings and uniform values copied), then rebinds the original. Opt-in and experimental (analysis gl_multiview_libs, ANALYSIS_VERSION 6), setting gl_mv_debug, triage gl-multiview-twin-failed.

Host tests: the rewriter on Doom3Quest's 19 shaders (GPL-3.0 fixtures) and glmv.c against a stand-in GL that applies Mesa's rule. Untested on the device.
2026-10-09 10:54:40 -04:00
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