fixes to _mesa_combine_programs(), from gallium-0.1

[mesa.git] / src / mesa / shader / prog_statevars.c

diff --git a/src/mesa/shader/prog_statevars.c b/src/mesa/shader/prog_statevars.c
index da0bb85f16fb7a3998f88e8c4d748997ffc3967e..72bdad7654599e4e1a98a7e31bef0d3eacaa2287 100644 (file)
--- a/src/mesa/shader/prog_statevars.c
+++ b/src/mesa/shader/prog_statevars.c
@@ -181,7 +181,7 @@ _mesa_fetch_state(GLcontext *ctx, const gl_state_index state[],
                      ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][i];
                }
                /* [3] = material alpha */
-               value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
+               value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_AMBIENT+face][3];
                return;
             case STATE_DIFFUSE:
                for (i = 0; i < 3; i++) {
@@ -197,7 +197,7 @@ _mesa_fetch_state(GLcontext *ctx, const gl_state_index state[],
                      ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][i];
                }
                /* [3] = material alpha */
-               value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_DIFFUSE+face][3];
+               value[3] = ctx->Light.Material.Attrib[MAT_ATTRIB_FRONT_SPECULAR+face][3];
                return;
             default:
                _mesa_problem(ctx, "Invalid lightprod state in fetch_state");
@@ -253,7 +253,8 @@ _mesa_fetch_state(GLcontext *ctx, const gl_state_index state[],
       value[0] = ctx->Fog.Density;
       value[1] = ctx->Fog.Start;
       value[2] = ctx->Fog.End;
-      value[3] = 1.0F / (ctx->Fog.End - ctx->Fog.Start);
+      value[3] = (ctx->Fog.End == ctx->Fog.Start)
+         ? 1.0 : 1.0F / (ctx->Fog.End - ctx->Fog.Start);
       return;
    case STATE_CLIPPLANE:
       {