Mesa (master): mesa: Consider textures incomplete when maxlevel < baselevel .

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 9b7f57b18eff3959a525297f068697ac03a75840
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=9b7f57b18eff3959a525297f068697ac03a75840

Author: Eric Anholt <eric at anholt.net>
Date:   Wed Jan  5 15:48:31 2011 -0800

mesa: Consider textures incomplete when maxlevel < baselevel.

See section 3.8.10 of the GL 2.1 specification.  There's no way to do
anything sane with that, and drivers would get all sorts of angry.

---

 src/mesa/main/texobj.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/src/mesa/main/texobj.c b/src/mesa/main/texobj.c
index 5bc5639..f61e023 100644
--- a/src/mesa/main/texobj.c
+++ b/src/mesa/main/texobj.c
@@ -470,6 +470,12 @@ _mesa_test_texobj_completeness( const struct gl_context *ctx,
 
    ASSERT(maxLevels > 0);
 
+   if (t->MaxLevel < t->BaseLevel) {
+      incomplete(t, "MAX_LEVEL (%d) < BASE_LEVEL (%d)",
+		 t->MaxLevel, t->BaseLevel);
+      return;
+   }
+
    t->_MaxLevel = baseLevel + maxLog2;
    t->_MaxLevel = MIN2(t->_MaxLevel, t->MaxLevel);
    t->_MaxLevel = MIN2(t->_MaxLevel, maxLevels - 1);