/* Kill pixel - set execution mask to zero for those pixels which
* fail.
*/
static void emit_kil( struct brw_wm_compile *c,
struct brw_reg *arg0)
{
struct brw_compile *p = &c->func;
struct intel_context *intel = &p->brw->intel;
struct brw_reg pixelmask;
GLuint i, j;
if (intel->gen >= 6)
pixelmask = retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UW);
else
pixelmask = retype(brw_vec1_grf(0, 0), BRW_REGISTER_TYPE_UW);
for (i = 0; i < 4; i++) {
/* Check if we've already done the comparison for this reg
* -- common when someone does KIL TEMP.wwww.
*/
for (j = 0; j < i; j++) {
if (memcmp(&arg0[j], &arg0[i], sizeof(arg0[0])) == 0)
break;
}
if (j != i)
continue;
brw_push_insn_state(p);
brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_GE, arg0[i], brw_imm_f(0));
brw_set_predicate_control_flag_value(p, 0xff);
brw_set_compression_control(p, BRW_COMPRESSION_NONE);
brw_AND(p, pixelmask, brw_flag_reg(), pixelmask);
brw_pop_insn_state(p);
}
}
/* How does predicate control work when execution_size != 8? Do I
* need to test/set for 0xffff when execution_size is 16?
*/
void brw_set_predicate_control_flag_value( struct brw_compile *p, unsigned value )
{
p->current->header.predicate_control = BRW_PREDICATE_NONE;
if (value != 0xff) {
if (value != p->flag_value) {
brw_MOV(p, brw_flag_reg(), brw_imm_uw(value));
p->flag_value = value;
}
p->current->header.predicate_control = BRW_PREDICATE_NORMAL;
}
}
/* How does predicate control work when execution_size != 8? Do I
* need to test/set for 0xffff when execution_size is 16?
*/
void brw_set_predicate_control_flag_value( struct brw_compile *p, GLuint value )
{
p->current->header.predicate_control = BRW_PREDICATE_NONE;
if (value != 0xff) {
if (value != p->flag_value) {
brw_push_insn_state(p);
brw_MOV(p, brw_flag_reg(), brw_imm_uw(value));
p->flag_value = value;
brw_pop_insn_state(p);
}
p->current->header.predicate_control = BRW_PREDICATE_NORMAL;
}
}
static void
set_predicate_control_flag_value(struct brw_compile *p,
struct brw_sf_compile *c,
unsigned value)
{
brw_set_default_predicate_control(p, BRW_PREDICATE_NONE);
if (value != 0xff) {
if (value != c->flag_value) {
brw_MOV(p, brw_flag_reg(0, 0), brw_imm_uw(value));
c->flag_value = value;
}
brw_set_default_predicate_control(p, BRW_PREDICATE_NORMAL);
}
}
void
vec4_generator::generate_unpack_flags(vec4_instruction *inst,
struct brw_reg dst)
{
brw_push_insn_state(p);
brw_set_mask_control(p, BRW_MASK_DISABLE);
brw_set_access_mode(p, BRW_ALIGN_1);
struct brw_reg flags = brw_flag_reg(0, 0);
struct brw_reg dst_0 = suboffset(vec1(dst), 0);
struct brw_reg dst_4 = suboffset(vec1(dst), 4);
brw_AND(p, dst_0, flags, brw_imm_ud(0x0f));
brw_AND(p, dst_4, flags, brw_imm_ud(0xf0));
brw_SHR(p, dst_4, dst_4, brw_imm_ud(4));
brw_pop_insn_state(p);
}
/* Kill pixel - set execution mask to zero for those pixels which
* fail.
*/
static void emit_kil( struct brw_wm_compile *c,
struct brw_reg *arg0)
{
struct brw_compile *p = &c->func;
struct brw_reg r0uw = retype(brw_vec1_grf(0, 0), BRW_REGISTER_TYPE_UW);
GLuint i;
/* XXX - usually won't need 4 compares!
*/
for (i = 0; i < 4; i++) {
brw_push_insn_state(p);
brw_CMP(p, brw_null_reg(), BRW_CONDITIONAL_GE, arg0[i], brw_imm_f(0));
brw_set_predicate_control_flag_value(p, 0xff);
brw_set_compression_control(p, BRW_COMPRESSION_NONE);
brw_AND(p, r0uw, brw_flag_reg(), r0uw);
brw_pop_insn_state(p);
}
}
/**
* Emit code that kills pixels whose X and Y coordinates are outside the
* boundary of the rectangle defined by the push constants (dst_x0, dst_y0,
* dst_x1, dst_y1).
*/
void
brw_blorp_eu_emitter::emit_kill_if_outside_rect(const struct brw_reg &x,
const struct brw_reg &y,
const struct brw_reg &dst_x0,
const struct brw_reg &dst_x1,
const struct brw_reg &dst_y0,
const struct brw_reg &dst_y1)
{
struct brw_reg f0 = brw_flag_reg(0, 0);
struct brw_reg g1 = retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UW);
emit_cmp(BRW_CONDITIONAL_GE, x, dst_x0);
emit_cmp(BRW_CONDITIONAL_GE, y, dst_y0)->predicate = BRW_PREDICATE_NORMAL;
emit_cmp(BRW_CONDITIONAL_L, x, dst_x1)->predicate = BRW_PREDICATE_NORMAL;
emit_cmp(BRW_CONDITIONAL_L, y, dst_y1)->predicate = BRW_PREDICATE_NORMAL;
fs_inst *inst = new (mem_ctx) fs_inst(BRW_OPCODE_AND, 16, g1, f0, g1);
inst->force_writemask_all = true;
insts.push_tail(inst);
}
brw_blorp_eu_emitter::brw_blorp_eu_emitter(struct brw_context *brw)
: brw_ctx (brw), mem_ctx(ralloc_context(NULL)), c(rzalloc(mem_ctx, struct brw_wm_compile)),
generator(brw, c, NULL, NULL, false)
{
}
brw_blorp_eu_emitter::~brw_blorp_eu_emitter()
{
ralloc_free(mem_ctx);
}
const unsigned *
brw_blorp_eu_emitter::get_program(unsigned *program_size, FILE *dump_file)
{
const unsigned *res;
if (unlikely(INTEL_DEBUG & DEBUG_BLORP)) {
fprintf(stderr, "Native code for BLORP blit:\n");
res = generator.generate_assembly(NULL, &insts, program_size, dump_file);
fprintf(stderr, "\n");
} else {
res = generator.generate_assembly(NULL, &insts, program_size);
}
return res;
}
/**
* Emit code that kills pixels whose X and Y coordinates are outside the
* boundary of the rectangle defined by the push constants (dst_x0, dst_y0,
* dst_x1, dst_y1).
*/
void
brw_blorp_eu_emitter::emit_kill_if_outside_rect(const struct brw_reg &x,
const struct brw_reg &y,
const struct brw_reg &dst_x0,
const struct brw_reg &dst_x1,
const struct brw_reg &dst_y0,
const struct brw_reg &dst_y1)
{
struct brw_reg f0 = brw_flag_reg(0, 0);
struct brw_reg g1 = retype(brw_vec1_grf(1, 7), BRW_REGISTER_TYPE_UW);
emit_cmp(BRW_CONDITIONAL_GE, x, dst_x0);
emit_cmp(BRW_CONDITIONAL_GE, y, dst_y0)->predicate = BRW_PREDICATE_NORMAL;
emit_cmp(BRW_CONDITIONAL_L, x, dst_x1)->predicate = BRW_PREDICATE_NORMAL;
emit_cmp(BRW_CONDITIONAL_L, y, dst_y1)->predicate = BRW_PREDICATE_NORMAL;
fs_inst *inst = new (mem_ctx) fs_inst(BRW_OPCODE_AND, g1, f0, g1);
inst->force_writemask_all = true;
insts.push_tail(inst);
}
void
brw_blorp_eu_emitter::emit_texture_lookup(const struct brw_reg &dst,
enum opcode op,
unsigned base_mrf,
unsigned msg_length)
{
fs_inst *inst = new (mem_ctx) fs_inst(op, dst, brw_message_reg(base_mrf));
inst->base_mrf = base_mrf;
inst->mlen = msg_length;
inst->sampler = 0;
inst->header_present = false;
insts.push_tail(inst);
}
