[Mesa-dev] [PATCH 1/3] i965/sampler_state: Clamp min/max LOD to 14 on gen7+
Jason Ekstrand
jason at jlekstrand.net
Fri Feb 10 23:52:42 UTC 2017
Cc: "17.0" <mesa-stable at lists.freedesktop.org>
---
src/mesa/drivers/dri/i965/brw_sampler_state.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/src/mesa/drivers/dri/i965/brw_sampler_state.c b/src/mesa/drivers/dri/i965/brw_sampler_state.c
index 412efb9..e677a75 100644
--- a/src/mesa/drivers/dri/i965/brw_sampler_state.c
+++ b/src/mesa/drivers/dri/i965/brw_sampler_state.c
@@ -503,8 +503,11 @@ brw_update_sampler_state(struct brw_context *brw,
}
const int lod_bits = brw->gen >= 7 ? 8 : 6;
- const unsigned min_lod = U_FIXED(CLAMP(sampler->MinLod, 0, 13), lod_bits);
- const unsigned max_lod = U_FIXED(CLAMP(sampler->MaxLod, 0, 13), lod_bits);
+ const float hw_max_lod = brw->gen >= 7 ? 14 : 13;
+ const unsigned min_lod =
+ U_FIXED(CLAMP(sampler->MinLod, 0, hw_max_lod), lod_bits);
+ const unsigned max_lod =
+ U_FIXED(CLAMP(sampler->MaxLod, 0, hw_max_lod), lod_bits);
const int lod_bias =
S_FIXED(CLAMP(tex_unit_lod_bias + sampler->LodBias, -16, 15), lod_bits);
--
2.5.0.400.gff86faf
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