Raspberry Pi 4 V3D Driver Reaches OpenGL ES 3.1 Conformance
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Raspberry Pi 4 V3D Driver Reaches OpenGL ES 3.1 Conformance
The V3D Gallium3D driver that most notably offers the open-source graphics support for the Raspberry Pi 4 is now an official OpenGL ES 3.1 implementation.
Consulting firm Igalia has continued working on the V3D driver since Eric Anholt left Broadcom. Igalia had ironed out OpenGL ES 3.1 support and last month also went on to begin tackling geometry shaders and more.
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Iago Toral: I am working on the Raspberry Pi 4 Mesa V3D driver
Yeah… this blog post is well overdue, but better late than never! So yes, I am currently working on progressing the Raspberry Pi 4 Mesa driver stack, together with my Igalian colleagues Piñeiro and Chema, continuing the fantastic work started by Eric Anholt on the Mesa V3D driver.
The Raspberry Pi 4 sports a Video Core VI GPU that is capable of OpenGL ES 3.2, so it is a big update from the Raspberry Pi 3, which could only do OpenGL ES 2.0. Another big change with the Raspberry Pi 4 is that the Mesa v3d driver is the driver used by default with Raspbian. Because both GPUs are quite different, Eric had to write an all new driver for the Raspberry Pi 4, and that is why there are two drivers in Mesa: the VC4 driver is for the Raspberry Pi 3, while the V3D driver targets the Raspberry Pi 4.
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Raspberry Pi 4 V3D driver gets Geometry Shaders
I actually landed this in Mesa back in December but never got to announce it anywhere. The implementation passes all the tests available in the Khronos Conformance Tests Suite (CTS). If you give this a try and find any bugs, please report them here with the V3D tag.
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Raspberry Pi 4 V3D driver gets OpenGL ES 3.1 conformance
So continuing with the news, here is a fairly recent one: as the tile states, I am happy to announce that the Raspberry Pi 4 is now an OpenGL ES 3.1 conformant product!. This means that the Mesa V3D driver has successfully passed a whole lot of tests designed to validate the OpenGL ES 3.1 feature set, which should be a good sign of driver quality and correctness.
It should be noted that the Raspberry Pi 4 shipped with a V3D driver exposing OpenGL ES 3.0, so this also means that on top of all the bugfixes that we implemented for conformance, the driver has also gained new functionality! Particularly, we merged Eric’s previous work to enable Compute Shaders.
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