gallium: clamp min_lod so it's never negative

diff --git a/src/mesa/state_tracker/st_atom_sampler.c b/src/mesa/state_tracker/st_atom_sampler.c
index 6241e70b5507ca7c5984e4b9dc9e79db19241c6f..92263cb6881000ae7341b61237d8846cbdf92a9a 100644 (file)
--- a/src/mesa/state_tracker/st_atom_sampler.c
+++ b/src/mesa/state_tracker/st_atom_sampler.c
@@ -147,7 +147,7 @@ update_samplers(struct st_context *st)
 
          sampler.lod_bias = st->ctx->Texture.Unit[su].LodBias;
 #if 1
-         sampler.min_lod = texobj->MinLod;
+         sampler.min_lod = (texobj->MinLod) < 0.0 ? 0.0 : texobj->MinLod;
          sampler.max_lod = texobj->MaxLod;
 #else
          /* min/max lod should really be as follows (untested).