void brw_emit_unfilled_clip( struct brw_clip_compile *c )
{
struct brw_compile *p = &c->func;
c->need_direction = ((c->key.offset_ccw || c->key.offset_cw) ||
(c->key.fill_ccw != c->key.fill_cw) ||
c->key.fill_ccw == CLIP_CULL ||
c->key.fill_cw == CLIP_CULL ||
c->key.copy_bfc_cw ||
c->key.copy_bfc_ccw);
brw_clip_tri_alloc_regs(c, 3 + c->key.nr_userclip + 6);
brw_clip_tri_init_vertices(c);
brw_clip_init_ff_sync(c);
assert(brw_clip_have_varying(c, VARYING_SLOT_EDGE));
if (c->key.fill_ccw == CLIP_CULL &&
c->key.fill_cw == CLIP_CULL) {
brw_clip_kill_thread(c);
return;
}
merge_edgeflags(c);
/* Need to use the inlist indirection here:
*/
if (c->need_direction)
compute_tri_direction(c);
if (c->key.fill_ccw == CLIP_CULL ||
c->key.fill_cw == CLIP_CULL)
cull_direction(c);
if (c->key.offset_ccw ||
c->key.offset_cw)
compute_offset(c);
if (c->key.copy_bfc_ccw ||
c->key.copy_bfc_cw)
copy_bfc(c);
/* Need to do this whether we clip or not:
*/
if (c->has_flat_shading)
brw_clip_tri_flat_shade(c);
brw_clip_init_clipmask(c);
brw_CMP(p, vec1(brw_null_reg()), BRW_CONDITIONAL_NZ, c->reg.planemask, brw_imm_ud(0));
brw_IF(p, BRW_EXECUTE_1);
{
brw_clip_init_planes(c);
brw_clip_tri(c);
check_nr_verts(c);
}
brw_ENDIF(p);
emit_unfilled_primitives(c);
brw_clip_kill_thread(c);
}
void brw_emit_tri_clip( struct brw_clip_compile *c )
{
struct brw_instruction *neg_rhw;
struct brw_compile *p = &c->func;
brw_clip_tri_alloc_regs(c, 3 + c->key.nr_userclip + 6);
brw_clip_tri_init_vertices(c);
brw_clip_init_clipmask(c);
brw_clip_init_ff_sync(c);
/* if -ve rhw workaround bit is set,
do cliptest */
if (c->chipset.is_965) {
brw_set_conditionalmod(p, BRW_CONDITIONAL_NZ);
brw_AND(p, brw_null_reg(), get_element_ud(c->reg.R0, 2),
brw_imm_ud(1<<20));
neg_rhw = brw_IF(p, BRW_EXECUTE_1);
{
brw_clip_test(c);
}
brw_ENDIF(p, neg_rhw);
}
/* Can't push into do_clip_tri because with polygon (or quad)
* flatshading, need to apply the flatshade here because we don't
* respect the PV when converting to trifan for emit:
*/
if (c->key.do_flat_shading)
brw_clip_tri_flat_shade(c);
if ((c->key.clip_mode == BRW_CLIPMODE_NORMAL) ||
(c->key.clip_mode == BRW_CLIPMODE_KERNEL_CLIP))
do_clip_tri(c);
else
maybe_do_clip_tri(c);
brw_clip_tri_emit_polygon(c);
/* Send an empty message to kill the thread:
*/
brw_clip_kill_thread(c);
}