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st/mesa: set sampler_view::last_level correctly

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It was set to pipe_resource::last_level and _MaxLevel was embedded in max_lod,
that's why it worked for ordinary texturing. However, min_lod doesn't have
any effect on texelFetch and textureQueryLevels, so we must still set
last_level correctly.

Reviewed-by: Roland Scheidegger <sroland@vmware.com>
This commit is contained in:
Marek Olšák
2014-06-14 02:49:11 +02:00
parent c530282bbc
commit 552c70a837
2 changed files with 12 additions and 6 deletions
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7
src/mesa/state_tracker/st_atom_sampler.c
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@@ -160,11 +160,8 @@ convert_sampler(struct st_context *st,
sampler->lod_bias = ctx->Texture.Unit[texUnit].LodBias + msamp->LodBias;
sampler->min_lod = CLAMP(msamp->MinLod,
0.0f,
(GLfloat) texobj->MaxLevel - texobj->BaseLevel);
sampler->max_lod = MIN2((GLfloat) texobj->MaxLevel - texobj->BaseLevel,
msamp->MaxLod);
sampler->min_lod = MAX2(msamp->MinLod, 0.0f);
sampler->max_lod = msamp->MaxLod;
if (sampler->max_lod < sampler->min_lod) {
/* The GL spec doesn't seem to specify what to do in this case.
* Swap the values.