| Panfrost |
| ======== |
| |
| The Panfrost driver stack includes an OpenGL ES implementation for Arm Mali |
| GPUs based on the Midgard and Bifrost microarchitectures. It is **conformant** |
| on Mali G52 but **non-conformant** on other GPUs. The following hardware is |
| currently supported: |
| |
| ========= ============ ============ ======= |
| Product Architecture OpenGL ES OpenGL |
| ========= ============ ============ ======= |
| Mali T720 Midgard (v4) 2.0 2.1 |
| Mali T760 Midgard (v5) 3.1 3.1 |
| Mali T820 Midgard (v5) 3.1 3.1 |
| Mali T860 Midgard (v5) 3.1 3.1 |
| Mali G72 Bifrost (v6) 3.1 3.1 |
| Mali G31 Bifrost (v7) 3.1 3.1 |
| Mali G52 Bifrost (v7) 3.1 3.1 |
| ========= ============ ============ ======= |
| |
| Other Midgard and Bifrost chips (T604, T620, T830, T880, G71, G51, G76) may |
| work but may be buggy. End users are advised against using Panfrost on |
| unsupported hardware. Developers interested in porting will need to allowlist |
| the hardware (``src/gallium/drivers/panfrost/pan_screen.c``). |
| |
| Older Mali chips based on the Utgard architecture (Mali 400, Mali 450) are |
| supported in the Lima driver, not Panfrost. Lima is also available in Mesa. |
| |
| Other graphics APIs (Vulkan, OpenCL) are not supported at this time. |
| |
| Building |
| -------- |
| |
| Panfrost's OpenGL support is a Gallium driver. Since Mali GPUs are 3D-only and |
| do not include a display controller, Mesa uses kmsro to support display |
| controllers paired with Mali GPUs. If your board with a Panfrost supported GPU |
| has a display controller with mainline Linux support not supported by kmsro, |
| it's easy to add support, see the commit ``cff7de4bb597e9`` as an example. |
| |
| LLVM is *not* required by Panfrost's compilers. LLVM support in Mesa can |
| safely be disabled for most OpenGL ES users with Panfrost. |
| |
| Build like ``meson . build/ -Ddri-drivers= -Dvulkan-drivers= |
| -Dgallium-drivers=panfrost -Dllvm=disabled`` for a build directory |
| ``build``. |
| |
| For general information on building Mesa, read :doc:`the install documentation |
| <../install>`. |
| |
| Chat |
| ---- |
| |
| Panfrost developers and users hang out on IRC at ``#panfrost`` on OFTC. Note |
| that registering and authenticating with `NickServ` is required to prevent |
| spam. `Join the chat. <https://webchat.oftc.net/?channels=#panfrost>`_ |
