diff options
| author | Eric Anholt <[email protected]> | 2016-07-14 17:26:43 -0700 |
|---|---|---|
| committer | Eric Anholt <[email protected]> | 2016-07-15 13:54:00 -0700 |
| commit | 3bcd0f1912a60cc9d3813923d18d29465e41ff56 (patch) | |
| tree | a453cbfb302a1e70b0704c3725f9ce6e5172db0d /src/gallium/drivers/vc4/vc4_context.h | |
| parent | 88152d7dc0e2cf233cd2c38a4e9affb1ea73fa97 (diff) | |
vc4: Speed up glGenerateMipmaps by avoiding shadow baselevel.
To support general GL_TEXTURE_BASE_LEVEL we have to copy to a temporary
miptree. However, if a single level is being selected, we can use the
existing miptree and force all the sampling to be from that particular
level.
This avoids a ton of software fallbacks in glGenerateMipmaps(), which uses
base levels in the blit implementation in gallium. Improves "glmark2 -b
terrain" from 2 fps to 3 (perhaps some more precision would be useful?),
and cuts its CPU usage during the benchmarking from ~30% to ~10% (total
CPU time from 8.8s to 7.6s).
Diffstat (limited to 'src/gallium/drivers/vc4/vc4_context.h')
| -rw-r--r-- | src/gallium/drivers/vc4/vc4_context.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/gallium/drivers/vc4/vc4_context.h b/src/gallium/drivers/vc4/vc4_context.h index 7da2b554e49..751f0437807 100644 --- a/src/gallium/drivers/vc4/vc4_context.h +++ b/src/gallium/drivers/vc4/vc4_context.h @@ -74,6 +74,7 @@ struct vc4_sampler_view { struct pipe_sampler_view base; uint32_t texture_p0; uint32_t texture_p1; + bool force_first_level; }; struct vc4_sampler_state { |