# testsw_vram - RetroBIOS - RetroBIOS

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# testsw_vram - RetroBIOS

Type | test
Classification | pure_libretro
Source | https://github.com/libretro/libretro-samples
Version | v1
Profiled | 2026-03-25
Cores | testsw_vram
Source ref | video/software/rendering_direct_to_vram/libretro-test.c

Technical notes

Software rendering test core. Renders a checkered pattern directly to VRAM via RETRO_ENVIRONMENT_GET_CURRENT_SOFTWARE_FRAMEBUFFER, with fallback to standard framebuffer copy. Single source file, no file I/O.

No BIOS or firmware files required. Generated on 2026-03-25T14:56:43Z