Trying to wrangle Core Animation, DirectComposition, and Wayland under a single API is making me yearn for the good old days of working around bugs in Qualcomm GPU drivers. At least I only had to work around one set of bugs…
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I thought that's the normal state of GPUs.
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AMD sold them their mobile GPU division which is why Adreno is an anagram of Radeon. It used to have a lot of internal memory corruption bugs in the firmware spamming IOMMU tracebacks to the kernel log.
@ScottyBauer1 - 3 more replies
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So I didn't deal with them from the graphics side, but I ran into a neat “feature” where kgsl rejects ioctls if the fd was opened by a different process, whereupon the proprietary userspace blob goes into an infinite loop until it OOMs or blows the stack or something.
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The userspace also calls exit() if a map fails. It's good stuff.
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