diff options
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_curbe.c')
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_curbe.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_curbe.c b/src/mesa/drivers/dri/i965/brw_curbe.c index 2ee2b464ed7..e1676de1e02 100644 --- a/src/mesa/drivers/dri/i965/brw_curbe.c +++ b/src/mesa/drivers/dri/i965/brw_curbe.c @@ -208,8 +208,13 @@ static void prepare_constant_buffer(struct brw_context *brw) } - /* The clipplanes are actually delivered to both CLIP and VS units. - * VS uses them to calculate the outcode bitmasks. + /* When using the old VS backend, the clipplanes are actually delivered to + * both CLIP and VS units. VS uses them to calculate the outcode bitmasks. + * + * When using the new VS backend, it is responsible for setting up its own + * clipplane constants if it needs them. This results in a slight waste of + * of curbe space, but the advantage is that the new VS backend can use its + * general-purpose uniform layout code to store the clipplanes. */ if (brw->curbe.clip_size) { GLuint offset = brw->curbe.clip_start * 16; |