diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_vue_map.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_vue_map.c b/src/mesa/drivers/dri/i965/brw_vue_map.c index f1af22147cc..4d509d39014 100644 --- a/src/mesa/drivers/dri/i965/brw_vue_map.c +++ b/src/mesa/drivers/dri/i965/brw_vue_map.c @@ -68,6 +68,19 @@ brw_compute_vue_map(const struct gen_device_info *devinfo, if (devinfo->gen < 6) separate = false; + if (separate) { + /* In SSO mode, we don't know whether the adjacent stage will + * read/write gl_ClipDistance, which has a fixed slot location. + * We have to assume the worst and reserve a slot for it, or else + * the rest of our varyings will be off by a slot. + * + * Note that we don't have to worry about COL/BFC, as those built-in + * variables only exist in legacy GL, which only supports VS and FS. + */ + slots_valid |= BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST0); + slots_valid |= BITFIELD64_BIT(VARYING_SLOT_CLIP_DIST1); + } + vue_map->slots_valid = slots_valid; vue_map->separate = separate; |