diff options
| -rw-r--r-- | src/mesa/state_tracker/st_atom_setup.c | 14 |
1 files changed, 9 insertions, 5 deletions
diff --git a/src/mesa/state_tracker/st_atom_setup.c b/src/mesa/state_tracker/st_atom_setup.c index 08f7a8a732..6ee96f6178 100644 --- a/src/mesa/state_tracker/st_atom_setup.c +++ b/src/mesa/state_tracker/st_atom_setup.c @@ -98,14 +98,18 @@ static void update_setup_state( struct st_context *st ) if (ctx->Light.ShadeModel == GL_FLAT) setup.flatshade = 1; - /* _NEW_LIGHT + /* _NEW_LIGHT | _NEW_PROGRAM * - * Not sure about the light->enabled requirement - does this still - * apply?? + * Back-face colors can come from traditional lighting (when + * GL_LIGHT_MODEL_TWO_SIDE is set) or from vertex programs (when + * GL_VERTEX_PROGRAM_TWO_SIDE is set). Note the logic here. */ - if (ctx->Light.Enabled && - ctx->Light.Model.TwoSide) + if (ctx->VertexProgram._Enabled) { + setup.light_twoside = ctx->VertexProgram.TwoSideEnabled; + } + else if (ctx->Light.Enabled && ctx->Light.Model.TwoSide) { setup.light_twoside = 1; + } /* _NEW_POLYGON */ |