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-rw-r--r--src/mesa/main/texstate.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/src/mesa/main/texstate.c b/src/mesa/main/texstate.c
index de247ebcad..0f3eea6f33 100644
--- a/src/mesa/main/texstate.c
+++ b/src/mesa/main/texstate.c
@@ -253,6 +253,8 @@ calculate_derived_texenv( struct gl_tex_env_combine_state *state,
break;
case GL_INTENSITY:
mode_a = GL_INTERPOLATE;
+ state->SourceA[0] = GL_CONSTANT;
+ state->OperandA[2] = GL_SRC_ALPHA;
/* FALLTHROUGH */
case GL_LUMINANCE:
case GL_RGB: