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by Const-me
2466 days ago
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> DRM uses /dev/dri/renderNNN It’s /dev/dri/card0 on my device. DRM has a thing called “dumb framebuffer” which exposes a memory mapped file with the CPU-accessible frame buffer data. See DRM_IOCTL_MODE_CREATE_DUMB and DRM_IOCTL_MODE_MAP_DUMB IOCTLs. The only inconvenience, some boilerplate is required to find the correct GPU connector, and setup a supported video mode. |
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