set program->SamplersUsed bit when using a texture instruction

diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index efb3b35..1e46d8c 100644 (file)
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -936,10 +936,12 @@ static void load_texture( struct texenv_fragment_program *p, GLuint unit )
                          
       /* TODO: Use D0_MASK_XY where possible.
        */
-      if (p->state->unit[unit].enabled) 
+      if (p->state->unit[unit].enabled) {
         p->src_texture[unit] = emit_texld( p, OPCODE_TXP,
                                            tmp, WRITEMASK_XYZW, 
                                            unit, dim, texcoord );
+         p->program->Base.SamplersUsed |= (1 << unit);
+      }
       else
         p->src_texture[unit] = get_zero(p);
    }