gallium/util: fix glClear with MRT by making the FS write to all cbufs

Reviewed-by: Brian Paul <[email protected]>

2 files changed, 5 insertions, 2 deletions

diff --git a/src/mesa/state_tracker/st_atom_shader.c b/src/mesa/state_tracker/st_atom_shader.c
index 45e7a117f5c..c1d7c80bb3a 100644
--- a/src/mesa/state_tracker/st_atom_shader.c
+++ b/src/mesa/state_tracker/st_atom_shader.c
@@ -59,7 +59,8 @@ get_passthrough_fs(struct st_context *st)
 {
    if (!st->passthrough_fs) {
       st->passthrough_fs =
-         util_make_fragment_passthrough_shader(st->pipe);
+         util_make_fragment_passthrough_shader(st->pipe, TGSI_SEMANTIC_COLOR,
+                                               TGSI_INTERPOLATE_PERSPECTIVE);
    }
 
    return st->passthrough_fs;
diff --git a/src/mesa/state_tracker/st_cb_clear.c b/src/mesa/state_tracker/st_cb_clear.c
index 5cf4c07f126..aabea6335ff 100644
--- a/src/mesa/state_tracker/st_cb_clear.c
+++ b/src/mesa/state_tracker/st_cb_clear.c
@@ -96,7 +96,9 @@ static INLINE void
 set_fragment_shader(struct st_context *st)
 {
    if (!st->clear.fs)
-      st->clear.fs = util_make_fragment_passthrough_shader(st->pipe);
+      st->clear.fs =
+         util_make_fragment_passthrough_shader(st->pipe, TGSI_SEMANTIC_COLOR,
+                                               TGSI_INTERPOLATE_CONSTANT);
 
    cso_set_fragment_shader_handle(st->cso_context, st->clear.fs);
 }