mesa: initial support for ARB_geometry_shader4

laying down the foundation for everything and implementing most of the
stuff.
linking, gl_VerticesIn and multidimensional inputs are left.

1 files changed, 23 insertions, 1 deletions

diff --git a/src/mesa/state_tracker/st_atom_constbuf.c b/src/mesa/state_tracker/st_atom_constbuf.c
index 38fadb2016..6f9d71e845 100644
--- a/src/mesa/state_tracker/st_atom_constbuf.c
+++ b/src/mesa/state_tracker/st_atom_constbuf.c
@@ -59,7 +59,8 @@ void st_upload_constants( struct st_context *st,
    struct pipe_resource **cbuf = &st->state.constants[shader_type];
 
    assert(shader_type == PIPE_SHADER_VERTEX ||
-          shader_type == PIPE_SHADER_FRAGMENT);
+          shader_type == PIPE_SHADER_FRAGMENT ||
+          shader_type == PIPE_SHADER_GEOMETRY);
 
    /* update constants */
    if (params && params->NumParameters) {
@@ -139,3 +140,24 @@ const struct st_tracked_state st_update_fs_constants = {
    update_fs_constants					/* update */
 };
 
+/* Geometry shader:
+ */
+static void update_gs_constants(struct st_context *st )
+{
+   struct st_geometry_program *gp = st->gp;
+   struct gl_program_parameter_list *params;
+
+   if (gp) {
+      params = gp->Base.Base.Parameters;
+      st_upload_constants( st, params, PIPE_SHADER_GEOMETRY );
+   }
+}
+
+const struct st_tracked_state st_update_gs_constants = {
+   "st_update_gs_constants",				/* name */
+   {							/* dirty */
+      (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS),          /* mesa */
+      ST_NEW_GEOMETRY_PROGRAM,				/* st */
+   },
+   update_gs_constants					/* update */
+};