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Build bodies on the CPU on AMD FirePro under Metal (GPU hang on Mac Pro 2013) (#1171)

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The AMD FirePro D300/D500/D700 Metal driver hangs on the tessellation compute shader and macOS resets the GPU, freezing the desktop. Bodies are built on the CPU on that device, and SOLIDCRAFT_CPU_TESS=1 forces the CPU path on any GPU. The check is a tested predicate, and the troubleshooting guide documents the variable.
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devrosx authored and GitHub committed 2026-10-14 18:25:31 -04:00
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docs/book/src/guide/troubleshooting.md
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@@ -62,6 +62,13 @@ saying what failed (earlier versions closed without a word). Things to try:
- Run `solidcraft --crash-log` to list recent crash reports, and attach the newest one to an
issue.
## The desktop stutters or freezes while SolidCraft builds bodies
Some graphics drivers hang on the shader SolidCraft uses to build bodies on the GPU, and the
system then resets the GPU. SolidCraft already builds bodies on the CPU on the AMD FirePro
D300/D500/D700 (Mac Pro 2013). On another GPU that does this, start SolidCraft with
`SOLIDCRAFT_CPU_TESS=1` set to build bodies on the CPU, and open an issue with the GPU's name.
## SolidCraft closes right away on Windows
A graphics driver can crash the app while it starts, before SolidCraft can show anything (an