Mesa (master): mesa: use correct tex unit lod bias for TXB instruction

[Brian Paul]

Module: Mesa
Branch: master
Commit: 1ab225017ed1ea8bd9e266d10ee56ab914bb28c1
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=1ab225017ed1ea8bd9e266d10ee56ab914bb28c1

Author: Brian Paul <brianp at vmware.com>
Date:   Wed Apr  1 18:50:07 2009 -0600

mesa: use correct tex unit lod bias for TXB instruction

---

 src/mesa/shader/prog_execute.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/mesa/shader/prog_execute.c b/src/mesa/shader/prog_execute.c
index a60cda6..0bc8d5f 100644
--- a/src/mesa/shader/prog_execute.c
+++ b/src/mesa/shader/prog_execute.c
@@ -1540,8 +1540,8 @@ _mesa_execute_program(GLcontext * ctx,
       case OPCODE_TXB:         /* GL_ARB_fragment_program only */
          /* Texel lookup with LOD bias */
          {
-            const struct gl_texture_unit *texUnit
-               = &ctx->Texture.Unit[inst->TexSrcUnit];
+            const GLuint unit = machine->Samplers[inst->TexSrcUnit];
+            const struct gl_texture_unit *texUnit = &ctx->Texture.Unit[unit];
             GLfloat texcoord[4], color[4], lodBias;
 
             fetch_vector4(&inst->SrcReg[0], machine, texcoord);