Difference between revisions of "Porting/Xonotic"
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= In progress = | = In progress = | ||
| − | 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: | + | == Makefile == |
| + | |||
| + | Xonotic does not build out of the box for POWER, because the Makefile uses the <code>-march</code> compiler flag, which is a machine-dependent option that [https://gcc.gnu.org/onlinedocs/gcc/x86-Options.html exists on x86] but [https://gcc.gnu.org/onlinedocs/gcc/RS_002f6000-and-PowerPC-Options.html does not exist on PowerPC]. It can be fixed by replacing this line in the Makefile: | ||
CFLAGS ?= -pipe -march=native -mtune=native -flto=auto | CFLAGS ?= -pipe -march=native -mtune=native -flto=auto | ||
| Line 10: | Line 12: | ||
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 = | ||
See [https://gitlab.com/xonotic/xonotic/-/wikis/Hardware-Requirements#how-to-run-the-benchmark instructions on using Xonotic as a benchmark]. | See [https://gitlab.com/xonotic/xonotic/-/wikis/Hardware-Requirements#how-to-run-the-benchmark instructions on using Xonotic as a benchmark]. | ||
| + | |||
| + | = See Also = | ||
| + | |||
| + | * [[Porting/LLVMpipe|LLVMpipe]] | ||
[[Category:Ports]] | [[Category:Ports]] | ||
Latest revision as of 12:28, 5 July 2022
In progress
Makefile
Xonotic does not build out of the box for POWER, because the Makefile uses the -march compiler flag, which is a machine-dependent option that exists on x86 but 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.
Benchmarking
See instructions on using Xonotic as a benchmark.
