static void copy_colors( struct brw_sf_compile *c,
struct brw_reg dst,
struct brw_reg src)
{
struct brw_compile *p = &c->func;
GLuint i;
for (i = VERT_RESULT_COL0; i <= VERT_RESULT_COL1; i++) {
if (have_attr(c,i))
brw_MOV(p,
get_vert_attr(c, dst, i),
get_vert_attr(c, src, i));
}
}
/***********************************************************************
* Twoside lighting
*/
static void copy_bfc( struct brw_sf_compile *c,
struct brw_reg vert )
{
struct brw_compile *p = &c->func;
GLuint i;
for (i = 0; i < 2; i++) {
if (have_attr(c, VERT_RESULT_COL0+i) &&
have_attr(c, VERT_RESULT_BFC0+i))
brw_MOV(p,
get_vert_attr(c, vert, VERT_RESULT_COL0+i),
get_vert_attr(c, vert, VERT_RESULT_BFC0+i));
}
}
/**
* Sets VERT_RESULT_FOGC.Y for gl_FrontFacing
*
* This is currently executed if the fragment program uses VERT_RESULT_FOGC
* at all, but this could be eliminated with a scan of the FP contents.
*/
static void
do_front_facing( struct brw_sf_compile *c )
{
struct brw_compile *p = &c->func;
int i;
if (!have_attr(c, VERT_RESULT_FOGC))
return;
brw_push_insn_state(p);
brw_CMP(p, brw_null_reg(),
c->key.frontface_ccw ? BRW_CONDITIONAL_G : BRW_CONDITIONAL_L,
c->det, brw_imm_f(0));
brw_set_predicate_control(p, BRW_PREDICATE_NONE);
for (i = 0; i < 3; i++) {
struct brw_reg fogc = get_vert_attr(c, c->vert[i],FRAG_ATTRIB_FOGC);
brw_MOV(p, get_element(fogc, 1), brw_imm_f(0));
brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
brw_MOV(p, get_element(fogc, 1), brw_imm_f(1));
brw_set_predicate_control(p, BRW_PREDICATE_NONE);
}
brw_pop_insn_state(p);
}
