diff options
| author | Keith Whitwell <keithw@vmware.com> | 2009-08-23 19:28:34 +0100 |
|---|---|---|
| committer | Keith Whitwell <keithw@vmware.com> | 2009-08-24 08:26:33 +0100 |
| commit | fd19e8adcd82e88d0fc8d187360b528100fed244 (patch) | |
| tree | 2c00d3f5f1739d223aad557fca229b1aa1077def /src/gallium/drivers/softpipe/sp_tex_sample.c | |
| parent | 60adc15ba5633190fc8a68e7c182f06dc7909df4 (diff) | |
softpipe: use one fewer divide in sample_cube
GCC won't do this for us. Makes a bigger difference to cubemap fps
than previous set of compilcated rearrangements.
Diffstat (limited to 'src/gallium/drivers/softpipe/sp_tex_sample.c')
| -rw-r--r-- | src/gallium/drivers/softpipe/sp_tex_sample.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/src/gallium/drivers/softpipe/sp_tex_sample.c b/src/gallium/drivers/softpipe/sp_tex_sample.c index 3bc4599e04..50460df7cd 100644 --- a/src/gallium/drivers/softpipe/sp_tex_sample.c +++ b/src/gallium/drivers/softpipe/sp_tex_sample.c @@ -1543,9 +1543,12 @@ sample_cube(struct tgsi_sampler *tgsi_sampler, } } - ssss[j] = ( sc / ma + 1.0F ) * 0.5F; - tttt[j] = ( tc / ma + 1.0F ) * 0.5F; - samp->faces[j] = face; + { + const float ima = 1.0 / ma; + ssss[j] = ( sc * ima + 1.0F ) * 0.5F; + tttt[j] = ( tc * ima + 1.0F ) * 0.5F; + samp->faces[j] = face; + } } /* In our little pipeline, the compare stage is next. If compare |