emulator: testgl type: libretro core_classification: pure_libretro source: "https://github.com/libretro/libretro-samples" upstream: "https://github.com/libretro/libretro-samples" profiled_date: "2026-03-25" core_version: "v1" display_name: "TestGL" cores: - testgl systems: [] notes: | OpenGL programmable pipeline test core from libretro-samples. Renders two spinning quads via GL 2.0+ / GLES 2.0+ shaders through the libretro hw_render interface. Shaders are embedded as string constants in the source. files: []