static struct ureg_src
decl_immediate( struct ureg_program *ureg,
const unsigned *v,
unsigned nr,
unsigned type )
{
unsigned i, j;
unsigned swizzle = 0;
/* Could do a first pass where we examine all existing immediates
* without expanding.
*/
for (i = 0; i < ureg->nr_immediates; i++) {
if (ureg->immediate[i].type != type) {
continue;
}
if (match_or_expand_immediate(v,
nr,
ureg->immediate[i].value.u,
&ureg->immediate[i].nr,
&swizzle)) {
goto out;
}
}
if (ureg->nr_immediates < UREG_MAX_IMMEDIATE) {
i = ureg->nr_immediates++;
ureg->immediate[i].type = type;
if (match_or_expand_immediate(v,
nr,
ureg->immediate[i].value.u,
&ureg->immediate[i].nr,
&swizzle)) {
goto out;
}
}
set_bad(ureg);
out:
/* Make sure that all referenced elements are from this immediate.
* Has the effect of making size-one immediates into scalars.
*/
for (j = nr; j < 4; j++) {
swizzle |= (swizzle & 0x3) << (j * 2);
}
return ureg_swizzle(ureg_src_register(TGSI_FILE_IMMEDIATE, i),
(swizzle >> 0) & 0x3,
(swizzle >> 2) & 0x3,
(swizzle >> 4) & 0x3,
(swizzle >> 6) & 0x3);
}
/* Internally generated immediates: overkill...
*/
static struct brw_fp_src src_imm( struct brw_wm_compile *c,
const GLfloat *v,
unsigned nr)
{
unsigned i, j;
unsigned swizzle;
/* Could do a first pass where we examine all existing immediates
* without expanding.
*/
for (i = 0; i < c->nr_immediates; i++) {
if (match_or_expand_immediate( v,
nr,
c->immediate[i].v,
&c->immediate[i].nr,
&swizzle ))
goto out;
}
if (c->nr_immediates < Elements(c->immediate)) {
i = c->nr_immediates++;
if (match_or_expand_immediate( v,
nr,
c->immediate[i].v,
&c->immediate[i].nr,
&swizzle ))
goto out;
}
c->error = 1;
return src_undef();
out:
/* Make sure that all referenced elements are from this immediate.
* Has the effect of making size-one immediates into scalars.
*/
for (j = nr; j < 4; j++)
swizzle |= (swizzle & 0x3) << (j * 2);
return src_swizzle( src_reg( TGSI_FILE_IMMEDIATE, i ),
BRW_GET_SWZ(swizzle, X),
BRW_GET_SWZ(swizzle, Y),
BRW_GET_SWZ(swizzle, Z),
BRW_GET_SWZ(swizzle, W) );
}
