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mesa: Prevent _MaxLevel from being less than zero

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When decoding using VDPAU, the _MaxLevel value becomes -1 due to
NumLevels being equal to 0 at a certain point, and decoding fails
due to an assertion later on.

Signed-off-by: Thong Thai <thong.thai@amd.com>
Signed-off-by: Marek Olšák <marek.olsak@amd.com>
Cc: 19.2 19.3 <mesa-stable@lists.freedesktop.org>
This commit is contained in:
Thong Thai 2020-01-07 16:38:25 -05:00 • committed by Marek Olšák
parent 9b71041627
commit 3a4f8c8158
1 changed files with 1 additions and 1 deletions
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2
src/mesa/main/texobj.c
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@ -757,7 +757,7 @@ _mesa_test_texobj_completeness( const struct gl_context *ctx,
/* Adjust max level for views: the data store may have more levels than
* the view exposes.
*/
t->_MaxLevel = MIN2(t->_MaxLevel, t->NumLevels - 1);
t->_MaxLevel = MAX2(MIN2(t->_MaxLevel, t->NumLevels - 1), 0);
}
/* Compute _MaxLambda = q - p in the spec used during mipmapping */