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i965/sampler_state: Clamp min/max LOD to 14 on gen7+

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Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Cc: "17.0" <mesa-stable@lists.freedesktop.org>
(cherry picked from commit 9df3778016)
This commit is contained in:
Jason Ekstrand 2017-02-06 21:56:35 -08:00 • committed by Emil Velikov
parent eb5a044ce7
commit d5859cbcc0
1 changed files with 5 additions and 2 deletions
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7
src/mesa/drivers/dri/i965/brw_sampler_state.c
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@ -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);