void brw_emit_anyprim_setup( struct brw_sf_compile *c )
{
struct brw_compile *p = &c->func;
struct brw_reg ip = brw_ip_reg();
struct brw_reg payload_prim = brw_uw1_reg(BRW_GENERAL_REGISTER_FILE, 1, 0);
struct brw_reg payload_attr = get_element_ud(brw_vec1_reg(BRW_GENERAL_REGISTER_FILE, 1, 0), 0);
struct brw_reg primmask;
struct brw_instruction *jmp;
struct brw_reg v1_null_ud = vec1(retype(brw_null_reg(), BRW_REGISTER_TYPE_UD));
GLuint saveflag;
c->nr_verts = 3;
alloc_regs(c);
primmask = retype(get_element(c->tmp, 0), BRW_REGISTER_TYPE_UD);
brw_MOV(p, primmask, brw_imm_ud(1));
brw_SHL(p, primmask, primmask, payload_prim);
brw_set_conditionalmod(p, BRW_CONDITIONAL_Z);
brw_AND(p, v1_null_ud, primmask, brw_imm_ud((1<<_3DPRIM_TRILIST) |
(1<<_3DPRIM_TRISTRIP) |
(1<<_3DPRIM_TRIFAN) |
(1<<_3DPRIM_TRISTRIP_REVERSE) |
(1<<_3DPRIM_POLYGON) |
(1<<_3DPRIM_RECTLIST) |
(1<<_3DPRIM_TRIFAN_NOSTIPPLE)));
jmp = brw_JMPI(p, ip, ip, brw_imm_d(0));
{
saveflag = p->flag_value;
brw_push_insn_state(p);
brw_emit_tri_setup( c, GL_FALSE );
brw_pop_insn_state(p);
p->flag_value = saveflag;
/* note - thread killed in subroutine, so must
* restore the flag which is changed when building
* the subroutine. fix #13240
*/
}
brw_land_fwd_jump(p, jmp);
brw_set_conditionalmod(p, BRW_CONDITIONAL_Z);
brw_AND(p, v1_null_ud, primmask, brw_imm_ud((1<<_3DPRIM_LINELIST) |
(1<<_3DPRIM_LINESTRIP) |
(1<<_3DPRIM_LINELOOP) |
(1<<_3DPRIM_LINESTRIP_CONT) |
(1<<_3DPRIM_LINESTRIP_BF) |
(1<<_3DPRIM_LINESTRIP_CONT_BF)));
jmp = brw_JMPI(p, ip, ip, brw_imm_d(0));
{
saveflag = p->flag_value;
brw_push_insn_state(p);
brw_emit_line_setup( c, GL_FALSE );
brw_pop_insn_state(p);
p->flag_value = saveflag;
/* note - thread killed in subroutine */
}
brw_land_fwd_jump(p, jmp);
brw_set_conditionalmod(p, BRW_CONDITIONAL_Z);
brw_AND(p, v1_null_ud, payload_attr, brw_imm_ud(1<<BRW_SPRITE_POINT_ENABLE));
jmp = brw_JMPI(p, ip, ip, brw_imm_d(0));
{
saveflag = p->flag_value;
brw_push_insn_state(p);
brw_emit_point_sprite_setup( c, GL_FALSE );
brw_pop_insn_state(p);
p->flag_value = saveflag;
}
brw_land_fwd_jump(p, jmp);
brw_emit_point_setup( c, GL_FALSE );
}
static void compile_sf_prog( struct brw_context *brw,
struct brw_sf_prog_key *key )
{
struct brw_sf_compile c;
const GLuint *program;
void *mem_ctx;
GLuint program_size;
memset(&c, 0, sizeof(c));
mem_ctx = ralloc_context(NULL);
/* Begin the compilation:
*/
brw_init_compile(brw, &c.func, mem_ctx);
c.key = *key;
c.vue_map = brw->vue_map_geom_out;
if (c.key.do_point_coord) {
/*
* gl_PointCoord is a FS instead of VS builtin variable, thus it's
* not included in c.vue_map generated in VS stage. Here we add
* it manually to let SF shader generate the needed interpolation
* coefficient for FS shader.
*/
c.vue_map.varying_to_slot[BRW_VARYING_SLOT_PNTC] = c.vue_map.num_slots;
c.vue_map.slot_to_varying[c.vue_map.num_slots++] = BRW_VARYING_SLOT_PNTC;
}
c.urb_entry_read_offset = BRW_SF_URB_ENTRY_READ_OFFSET;
c.nr_attr_regs = (c.vue_map.num_slots + 1)/2 - c.urb_entry_read_offset;
c.nr_setup_regs = c.nr_attr_regs;
c.prog_data.urb_read_length = c.nr_attr_regs;
c.prog_data.urb_entry_size = c.nr_setup_regs * 2;
c.has_flat_shading = brw_any_flat_varyings(&key->interpolation_mode);
/* Which primitive? Or all three?
*/
switch (key->primitive) {
case SF_TRIANGLES:
c.nr_verts = 3;
brw_emit_tri_setup( &c, true );
break;
case SF_LINES:
c.nr_verts = 2;
brw_emit_line_setup( &c, true );
break;
case SF_POINTS:
c.nr_verts = 1;
if (key->do_point_sprite)
brw_emit_point_sprite_setup( &c, true );
else
brw_emit_point_setup( &c, true );
break;
case SF_UNFILLED_TRIS:
c.nr_verts = 3;
brw_emit_anyprim_setup( &c );
break;
default:
unreachable("not reached");
}
brw_compact_instructions(&c.func, 0, 0, NULL);
/* get the program
*/
program = brw_get_program(&c.func, &program_size);
if (unlikely(INTEL_DEBUG & DEBUG_SF)) {
fprintf(stderr, "sf:\n");
brw_disassemble(brw, c.func.store, 0, program_size, stderr);
fprintf(stderr, "\n");
}
brw_upload_cache(&brw->cache, BRW_SF_PROG,
&c.key, sizeof(c.key),
program, program_size,
&c.prog_data, sizeof(c.prog_data),
&brw->sf.prog_offset, &brw->sf.prog_data);
ralloc_free(mem_ctx);
}
