Difference between revisions of "Porting/Xonotic"
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JeremyRand (talk | contribs) (Add Xonotic page) |
JeremyRand (talk | contribs) (Add SIMD section) |
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= In progress = | = In progress = | ||
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| + | == Makefile == | ||
Xonotic does not build out of the box for POWER, because the Makefile uses the <code>-march</code> compiler flag, which does not exist on PowerPC. It can be fixed by replacing this line in the Makefile: | Xonotic does not build out of the box for POWER, because the Makefile uses the <code>-march</code> compiler flag, which does not exist on PowerPC. It can be fixed by replacing this line in the Makefile: | ||
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After making this change, the [https://gitlab.com/xonotic/xonotic/-/wikis/Compiling build instructions] should work. | After making this change, the [https://gitlab.com/xonotic/xonotic/-/wikis/Compiling build instructions] should work. | ||
| + | |||
| + | == SIMD == | ||
| + | |||
| + | Xonotic logs some messages like this: | ||
| + | |||
| + | Skeletal animation uses generic code path (SSE not compiled in) | ||
| + | DPSOFTRAST not available (SSE2 not compiled in) | ||
| + | |||
| + | It would be interesting to try porting these SIMD code paths to POWER to see if performance improves. | ||
= Benchmarking = | = Benchmarking = | ||
Revision as of 18:56, 4 July 2022
Contents
In progress
Makefile
Xonotic does not build out of the box for POWER, because the Makefile uses the -march compiler flag, which does not exist on PowerPC. It can be fixed by replacing this line in the Makefile:
CFLAGS ?= -pipe -march=native -mtune=native -flto=auto
...with this line:
CFLAGS ?= -pipe -mcpu=native -mtune=native -flto=auto
After making this change, the build instructions should work.
SIMD
Xonotic logs some messages like this:
Skeletal animation uses generic code path (SSE not compiled in) DPSOFTRAST not available (SSE2 not compiled in)
It would be interesting to try porting these SIMD code paths to POWER to see if performance improves.
