23.Feb.2026
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Status report of the Warp3D driver for the PiStorm32 (PI4/CM4)
In an update from yesterday, Steffen Häuser describes the current status of the project to create a 3D library for PiStorm systems equipped with Pi4 and Pi CM4 (amiga-news.de reported).
The work of developer Dennis Boon on this project is not easy, as unlike the Pi3 GPU, there is no official documentation for the Pi4 GPU. Nevertheless, Boon hopes to be able to present a first working "primitive example" in a few weeks, which will not yet be a complete library or similar. Subsequently, many library functions would be implemented.
What where the big issues (which have been resolved, often with a lot of experimenting):
- Memory Layout between VC4 and VC6 differed
- MMU Differences VC4 vs. VC6 (VC6 uses physical addresses, not bus addresses, this was only found out quite recently that this difference was the reason for nothing working)
- Little Endian stuff which needed to be resolved for Big Endian
- issues around Assembler (talking of QPU Assembler here - the Shader stuff)
(dr)
[News message: 23. Feb. 2026, 21:00] [Comments: 0]
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