diff options
| -rw-r--r-- | src/mesa/drivers/dri/i965/brw_clip_util.c | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_clip_util.c b/src/mesa/drivers/dri/i965/brw_clip_util.c index 8c9f0e49575..a12dab6b350 100644 --- a/src/mesa/drivers/dri/i965/brw_clip_util.c +++ b/src/mesa/drivers/dri/i965/brw_clip_util.c @@ -151,17 +151,20 @@ void brw_clip_interp_vertex( struct brw_clip_compile *c, /* Iterate over each attribute (could be done in pairs?) */ - for (slot = 2*c->header_regs; slot < c->vue_map.num_slots; slot++) { + for (slot = 0; slot < c->vue_map.num_slots; slot++) { + int vert_result = c->vue_map.slot_to_vert_result[slot]; GLuint delta = brw_vue_slot_to_offset(slot); - if (c->vue_map.slot_to_vert_result[slot] == VERT_RESULT_EDGE) { + if (vert_result == VERT_RESULT_EDGE) { if (force_edgeflag) brw_MOV(p, deref_4f(dest_ptr, delta), brw_imm_f(1)); else brw_MOV(p, deref_4f(dest_ptr, delta), deref_4f(v0_ptr, delta)); - } - else { - /* Interpolate: + } else if (vert_result == VERT_RESULT_PSIZ) { + /* PSIZ doesn't need interpolation */ + } else if (vert_result < VERT_RESULT_MAX) { + /* This is a true vertex result (and not a special value for the VUE + * header), so interpolate: * * New = attr0 + t*attr1 - t*attr0 */ |