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21 * DEALINGS IN THE SOFTWARE.
24 #include "main/core.h" /* for MAX2 */
26 #include "compiler/glsl_types.h"
28 ir_rvalue::ir_rvalue(enum ir_node_type t)
31 this->type = glsl_type::error_type;
34 bool ir_rvalue::is_zero() const
39 bool ir_rvalue::is_one() const
44 bool ir_rvalue::is_negative_one() const
50 * Modify the swizzle make to move one component to another
52 * \param m IR swizzle to be modified
53 * \param from Component in the RHS that is to be swizzled
54 * \param to Desired swizzle location of \c from
57 update_rhs_swizzle(ir_swizzle_mask &m, unsigned from, unsigned to)
60 case 0: m.x = from; break;
61 case 1: m.y = from; break;
62 case 2: m.z = from; break;
63 case 3: m.w = from; break;
64 default: assert(!"Should not get here.");
69 ir_assignment::set_lhs(ir_rvalue *lhs)
72 bool swizzled = false;
75 ir_swizzle *swiz = lhs->as_swizzle();
80 unsigned write_mask = 0;
81 ir_swizzle_mask rhs_swiz = { 0, 0, 0, 0, 0, 0 };
83 for (unsigned i = 0; i < swiz->mask.num_components; i++) {
87 case 0: c = swiz->mask.x; break;
88 case 1: c = swiz->mask.y; break;
89 case 2: c = swiz->mask.z; break;
90 case 3: c = swiz->mask.w; break;
91 default: assert(!"Should not get here.");
94 write_mask |= (((this->write_mask >> i) & 1) << c);
95 update_rhs_swizzle(rhs_swiz, i, c);
96 rhs_swiz.num_components = swiz->val->type->vector_elements;
99 this->write_mask = write_mask;
102 this->rhs = new(mem_ctx) ir_swizzle(this->rhs, rhs_swiz);
107 /* Now, RHS channels line up with the LHS writemask. Collapse it
108 * to just the channels that will be written.
110 ir_swizzle_mask rhs_swiz = { 0, 0, 0, 0, 0, 0 };
112 for (int i = 0; i < 4; i++) {
113 if (write_mask & (1 << i))
114 update_rhs_swizzle(rhs_swiz, i, rhs_chan++);
116 rhs_swiz.num_components = rhs_chan;
117 this->rhs = new(mem_ctx) ir_swizzle(this->rhs, rhs_swiz);
120 assert((lhs == NULL) || lhs->as_dereference());
122 this->lhs = (ir_dereference *) lhs;
126 ir_assignment::whole_variable_written()
128 ir_variable *v = this->lhs->whole_variable_referenced();
133 if (v->type->is_scalar())
136 if (v->type->is_vector()) {
137 const unsigned mask = (1U << v->type->vector_elements) - 1;
139 if (mask != this->write_mask)
143 /* Either all the vector components are assigned or the variable is some
144 * composite type (and the whole thing is assigned.
149 ir_assignment::ir_assignment(ir_dereference *lhs, ir_rvalue *rhs,
150 ir_rvalue *condition, unsigned write_mask)
151 : ir_instruction(ir_type_assignment)
153 this->condition = condition;
156 this->write_mask = write_mask;
158 if (lhs->type->is_scalar() || lhs->type->is_vector()) {
159 int lhs_components = 0;
160 for (int i = 0; i < 4; i++) {
161 if (write_mask & (1 << i))
165 assert(lhs_components == this->rhs->type->vector_elements);
169 ir_assignment::ir_assignment(ir_rvalue *lhs, ir_rvalue *rhs,
170 ir_rvalue *condition)
171 : ir_instruction(ir_type_assignment)
173 this->condition = condition;
176 /* If the RHS is a vector type, assume that all components of the vector
177 * type are being written to the LHS. The write mask comes from the RHS
178 * because we can have a case where the LHS is a vec4 and the RHS is a
179 * vec3. In that case, the assignment is:
181 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
183 if (rhs->type->is_vector())
184 this->write_mask = (1U << rhs->type->vector_elements) - 1;
185 else if (rhs->type->is_scalar())
186 this->write_mask = 1;
188 this->write_mask = 0;
193 ir_expression::ir_expression(int op, const struct glsl_type *type,
194 ir_rvalue *op0, ir_rvalue *op1,
195 ir_rvalue *op2, ir_rvalue *op3)
196 : ir_rvalue(ir_type_expression)
199 this->operation = ir_expression_operation(op);
200 this->operands[0] = op0;
201 this->operands[1] = op1;
202 this->operands[2] = op2;
203 this->operands[3] = op3;
205 int num_operands = get_num_operands(this->operation);
206 for (int i = num_operands; i < 4; i++) {
207 assert(this->operands[i] == NULL);
212 ir_expression::ir_expression(int op, ir_rvalue *op0)
213 : ir_rvalue(ir_type_expression)
215 this->operation = ir_expression_operation(op);
216 this->operands[0] = op0;
217 this->operands[1] = NULL;
218 this->operands[2] = NULL;
219 this->operands[3] = NULL;
221 assert(op <= ir_last_unop);
223 switch (this->operation) {
224 case ir_unop_bit_not:
225 case ir_unop_logic_not:
240 case ir_unop_round_even:
244 case ir_unop_dFdx_coarse:
245 case ir_unop_dFdx_fine:
247 case ir_unop_dFdy_coarse:
248 case ir_unop_dFdy_fine:
249 case ir_unop_bitfield_reverse:
250 case ir_unop_interpolate_at_centroid:
251 case ir_unop_saturate:
252 this->type = op0->type;
259 case ir_unop_bitcast_f2i:
260 case ir_unop_bit_count:
261 case ir_unop_find_msb:
262 case ir_unop_find_lsb:
263 case ir_unop_subroutine_to_int:
266 this->type = glsl_type::get_instance(GLSL_TYPE_INT,
267 op0->type->vector_elements, 1);
274 case ir_unop_bitcast_i2f:
275 case ir_unop_bitcast_u2f:
278 this->type = glsl_type::get_instance(GLSL_TYPE_FLOAT,
279 op0->type->vector_elements, 1);
286 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL,
287 op0->type->vector_elements, 1);
295 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE,
296 op0->type->vector_elements, 1);
302 case ir_unop_bitcast_f2u:
305 this->type = glsl_type::get_instance(GLSL_TYPE_UINT,
306 op0->type->vector_elements, 1);
314 case ir_unop_u642i64:
315 this->type = glsl_type::get_instance(GLSL_TYPE_INT64,
316 op0->type->vector_elements, 1);
323 case ir_unop_i642u64:
324 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64,
325 op0->type->vector_elements, 1);
328 this->type = glsl_type::float_type;
331 case ir_unop_unpack_double_2x32:
332 case ir_unop_unpack_uint_2x32:
333 this->type = glsl_type::uvec2_type;
336 case ir_unop_unpack_int_2x32:
337 this->type = glsl_type::ivec2_type;
340 case ir_unop_pack_snorm_2x16:
341 case ir_unop_pack_snorm_4x8:
342 case ir_unop_pack_unorm_2x16:
343 case ir_unop_pack_unorm_4x8:
344 case ir_unop_pack_half_2x16:
345 this->type = glsl_type::uint_type;
348 case ir_unop_pack_double_2x32:
349 this->type = glsl_type::double_type;
352 case ir_unop_pack_int_2x32:
353 this->type = glsl_type::int64_t_type;
356 case ir_unop_pack_uint_2x32:
357 this->type = glsl_type::uint64_t_type;
360 case ir_unop_unpack_snorm_2x16:
361 case ir_unop_unpack_unorm_2x16:
362 case ir_unop_unpack_half_2x16:
363 this->type = glsl_type::vec2_type;
366 case ir_unop_unpack_snorm_4x8:
367 case ir_unop_unpack_unorm_4x8:
368 this->type = glsl_type::vec4_type;
371 case ir_unop_frexp_sig:
372 this->type = op0->type;
374 case ir_unop_frexp_exp:
375 this->type = glsl_type::get_instance(GLSL_TYPE_INT,
376 op0->type->vector_elements, 1);
379 case ir_unop_get_buffer_size:
380 case ir_unop_ssbo_unsized_array_length:
381 this->type = glsl_type::int_type;
384 case ir_unop_vote_any:
385 case ir_unop_vote_all:
386 case ir_unop_vote_eq:
387 this->type = glsl_type::bool_type;
390 case ir_unop_bitcast_i642d:
391 case ir_unop_bitcast_u642d:
392 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE,
393 op0->type->vector_elements, 1);
396 case ir_unop_bitcast_d2i64:
397 this->type = glsl_type::get_instance(GLSL_TYPE_INT64,
398 op0->type->vector_elements, 1);
400 case ir_unop_bitcast_d2u64:
401 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64,
402 op0->type->vector_elements, 1);
406 assert(!"not reached: missing automatic type setup for ir_expression");
407 this->type = op0->type;
412 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1)
413 : ir_rvalue(ir_type_expression)
415 this->operation = ir_expression_operation(op);
416 this->operands[0] = op0;
417 this->operands[1] = op1;
418 this->operands[2] = NULL;
419 this->operands[3] = NULL;
421 assert(op > ir_last_unop);
423 switch (this->operation) {
424 case ir_binop_all_equal:
425 case ir_binop_any_nequal:
426 this->type = glsl_type::bool_type;
437 if (op0->type->is_scalar()) {
438 this->type = op1->type;
439 } else if (op1->type->is_scalar()) {
440 this->type = op0->type;
442 if (this->operation == ir_binop_mul) {
443 this->type = glsl_type::get_mul_type(op0->type, op1->type);
445 assert(op0->type == op1->type);
446 this->type = op0->type;
451 case ir_binop_logic_and:
452 case ir_binop_logic_xor:
453 case ir_binop_logic_or:
454 case ir_binop_bit_and:
455 case ir_binop_bit_xor:
456 case ir_binop_bit_or:
457 assert(!op0->type->is_matrix());
458 assert(!op1->type->is_matrix());
459 if (op0->type->is_scalar()) {
460 this->type = op1->type;
461 } else if (op1->type->is_scalar()) {
462 this->type = op0->type;
464 assert(op0->type->vector_elements == op1->type->vector_elements);
465 this->type = op0->type;
470 case ir_binop_nequal:
471 case ir_binop_lequal:
472 case ir_binop_gequal:
474 case ir_binop_greater:
475 assert(op0->type == op1->type);
476 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL,
477 op0->type->vector_elements, 1);
481 this->type = op0->type->get_base_type();
484 case ir_binop_imul_high:
486 case ir_binop_borrow:
487 case ir_binop_lshift:
488 case ir_binop_rshift:
490 case ir_binop_interpolate_at_offset:
491 case ir_binop_interpolate_at_sample:
492 this->type = op0->type;
495 case ir_binop_vector_extract:
496 this->type = op0->type->get_scalar_type();
500 assert(!"not reached: missing automatic type setup for ir_expression");
501 this->type = glsl_type::float_type;
505 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1,
507 : ir_rvalue(ir_type_expression)
509 this->operation = ir_expression_operation(op);
510 this->operands[0] = op0;
511 this->operands[1] = op1;
512 this->operands[2] = op2;
513 this->operands[3] = NULL;
515 assert(op > ir_last_binop && op <= ir_last_triop);
517 switch (this->operation) {
520 case ir_triop_bitfield_extract:
521 case ir_triop_vector_insert:
522 this->type = op0->type;
526 this->type = op1->type;
530 assert(!"not reached: missing automatic type setup for ir_expression");
531 this->type = glsl_type::float_type;
536 ir_expression::get_num_operands(ir_expression_operation op)
538 assert(op <= ir_last_opcode);
540 if (op <= ir_last_unop)
543 if (op <= ir_last_binop)
546 if (op <= ir_last_triop)
549 if (op <= ir_last_quadop)
556 #include "ir_expression_operation_strings.h"
559 depth_layout_string(ir_depth_layout layout)
562 case ir_depth_layout_none: return "";
563 case ir_depth_layout_any: return "depth_any";
564 case ir_depth_layout_greater: return "depth_greater";
565 case ir_depth_layout_less: return "depth_less";
566 case ir_depth_layout_unchanged: return "depth_unchanged";
574 ir_expression_operation
575 ir_expression::get_operator(const char *str)
577 for (int op = 0; op <= int(ir_last_opcode); op++) {
578 if (strcmp(str, ir_expression_operation_strings[op]) == 0)
579 return (ir_expression_operation) op;
581 return (ir_expression_operation) -1;
585 ir_expression::variable_referenced() const
588 case ir_binop_vector_extract:
589 case ir_triop_vector_insert:
590 /* We get these for things like a[0] where a is a vector type. In these
591 * cases we want variable_referenced() to return the actual vector
592 * variable this is wrapping.
594 return operands[0]->variable_referenced();
596 return ir_rvalue::variable_referenced();
600 ir_constant::ir_constant()
601 : ir_rvalue(ir_type_constant)
603 this->array_elements = NULL;
606 ir_constant::ir_constant(const struct glsl_type *type,
607 const ir_constant_data *data)
608 : ir_rvalue(ir_type_constant)
610 this->array_elements = NULL;
612 assert((type->base_type >= GLSL_TYPE_UINT)
613 && (type->base_type <= GLSL_TYPE_BOOL));
616 memcpy(& this->value, data, sizeof(this->value));
619 ir_constant::ir_constant(float f, unsigned vector_elements)
620 : ir_rvalue(ir_type_constant)
622 assert(vector_elements <= 4);
623 this->type = glsl_type::get_instance(GLSL_TYPE_FLOAT, vector_elements, 1);
624 for (unsigned i = 0; i < vector_elements; i++) {
625 this->value.f[i] = f;
627 for (unsigned i = vector_elements; i < 16; i++) {
628 this->value.f[i] = 0;
632 ir_constant::ir_constant(double d, unsigned vector_elements)
633 : ir_rvalue(ir_type_constant)
635 assert(vector_elements <= 4);
636 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE, vector_elements, 1);
637 for (unsigned i = 0; i < vector_elements; i++) {
638 this->value.d[i] = d;
640 for (unsigned i = vector_elements; i < 16; i++) {
641 this->value.d[i] = 0.0;
645 ir_constant::ir_constant(unsigned int u, unsigned vector_elements)
646 : ir_rvalue(ir_type_constant)
648 assert(vector_elements <= 4);
649 this->type = glsl_type::get_instance(GLSL_TYPE_UINT, vector_elements, 1);
650 for (unsigned i = 0; i < vector_elements; i++) {
651 this->value.u[i] = u;
653 for (unsigned i = vector_elements; i < 16; i++) {
654 this->value.u[i] = 0;
658 ir_constant::ir_constant(int integer, unsigned vector_elements)
659 : ir_rvalue(ir_type_constant)
661 assert(vector_elements <= 4);
662 this->type = glsl_type::get_instance(GLSL_TYPE_INT, vector_elements, 1);
663 for (unsigned i = 0; i < vector_elements; i++) {
664 this->value.i[i] = integer;
666 for (unsigned i = vector_elements; i < 16; i++) {
667 this->value.i[i] = 0;
671 ir_constant::ir_constant(uint64_t u64, unsigned vector_elements)
672 : ir_rvalue(ir_type_constant)
674 assert(vector_elements <= 4);
675 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64, vector_elements, 1);
676 for (unsigned i = 0; i < vector_elements; i++) {
677 this->value.u64[i] = u64;
679 for (unsigned i = vector_elements; i < 16; i++) {
680 this->value.u64[i] = 0;
684 ir_constant::ir_constant(int64_t int64, unsigned vector_elements)
685 : ir_rvalue(ir_type_constant)
687 assert(vector_elements <= 4);
688 this->type = glsl_type::get_instance(GLSL_TYPE_INT64, vector_elements, 1);
689 for (unsigned i = 0; i < vector_elements; i++) {
690 this->value.i64[i] = int64;
692 for (unsigned i = vector_elements; i < 16; i++) {
693 this->value.i64[i] = 0;
697 ir_constant::ir_constant(bool b, unsigned vector_elements)
698 : ir_rvalue(ir_type_constant)
700 assert(vector_elements <= 4);
701 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL, vector_elements, 1);
702 for (unsigned i = 0; i < vector_elements; i++) {
703 this->value.b[i] = b;
705 for (unsigned i = vector_elements; i < 16; i++) {
706 this->value.b[i] = false;
710 ir_constant::ir_constant(const ir_constant *c, unsigned i)
711 : ir_rvalue(ir_type_constant)
713 this->array_elements = NULL;
714 this->type = c->type->get_base_type();
716 switch (this->type->base_type) {
717 case GLSL_TYPE_UINT: this->value.u[0] = c->value.u[i]; break;
718 case GLSL_TYPE_INT: this->value.i[0] = c->value.i[i]; break;
719 case GLSL_TYPE_FLOAT: this->value.f[0] = c->value.f[i]; break;
720 case GLSL_TYPE_BOOL: this->value.b[0] = c->value.b[i]; break;
721 case GLSL_TYPE_DOUBLE: this->value.d[0] = c->value.d[i]; break;
722 default: assert(!"Should not get here."); break;
726 ir_constant::ir_constant(const struct glsl_type *type, exec_list *value_list)
727 : ir_rvalue(ir_type_constant)
729 this->array_elements = NULL;
732 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
733 || type->is_record() || type->is_array());
735 if (type->is_array()) {
736 this->array_elements = ralloc_array(this, ir_constant *, type->length);
738 foreach_in_list(ir_constant, value, value_list) {
739 assert(value->as_constant() != NULL);
741 this->array_elements[i++] = value;
746 /* If the constant is a record, the types of each of the entries in
747 * value_list must be a 1-for-1 match with the structure components. Each
748 * entry must also be a constant. Just move the nodes from the value_list
749 * to the list in the ir_constant.
751 /* FINISHME: Should there be some type checking and / or assertions here? */
752 /* FINISHME: Should the new constant take ownership of the nodes from
753 * FINISHME: value_list, or should it make copies?
755 if (type->is_record()) {
756 value_list->move_nodes_to(& this->components);
760 for (unsigned i = 0; i < 16; i++) {
761 this->value.u[i] = 0;
764 ir_constant *value = (ir_constant *) (value_list->get_head_raw());
766 /* Constructors with exactly one scalar argument are special for vectors
767 * and matrices. For vectors, the scalar value is replicated to fill all
768 * the components. For matrices, the scalar fills the components of the
769 * diagonal while the rest is filled with 0.
771 if (value->type->is_scalar() && value->next->is_tail_sentinel()) {
772 if (type->is_matrix()) {
773 /* Matrix - fill diagonal (rest is already set to 0) */
774 assert(type->base_type == GLSL_TYPE_FLOAT ||
775 type->base_type == GLSL_TYPE_DOUBLE);
776 for (unsigned i = 0; i < type->matrix_columns; i++) {
777 if (type->base_type == GLSL_TYPE_FLOAT)
778 this->value.f[i * type->vector_elements + i] =
781 this->value.d[i * type->vector_elements + i] =
785 /* Vector or scalar - fill all components */
786 switch (type->base_type) {
789 for (unsigned i = 0; i < type->components(); i++)
790 this->value.u[i] = value->value.u[0];
792 case GLSL_TYPE_FLOAT:
793 for (unsigned i = 0; i < type->components(); i++)
794 this->value.f[i] = value->value.f[0];
796 case GLSL_TYPE_DOUBLE:
797 for (unsigned i = 0; i < type->components(); i++)
798 this->value.d[i] = value->value.d[0];
800 case GLSL_TYPE_UINT64:
801 case GLSL_TYPE_INT64:
802 for (unsigned i = 0; i < type->components(); i++)
803 this->value.u64[i] = value->value.u64[0];
806 for (unsigned i = 0; i < type->components(); i++)
807 this->value.b[i] = value->value.b[0];
810 assert(!"Should not get here.");
817 if (type->is_matrix() && value->type->is_matrix()) {
818 assert(value->next->is_tail_sentinel());
820 /* From section 5.4.2 of the GLSL 1.20 spec:
821 * "If a matrix is constructed from a matrix, then each component
822 * (column i, row j) in the result that has a corresponding component
823 * (column i, row j) in the argument will be initialized from there."
825 unsigned cols = MIN2(type->matrix_columns, value->type->matrix_columns);
826 unsigned rows = MIN2(type->vector_elements, value->type->vector_elements);
827 for (unsigned i = 0; i < cols; i++) {
828 for (unsigned j = 0; j < rows; j++) {
829 const unsigned src = i * value->type->vector_elements + j;
830 const unsigned dst = i * type->vector_elements + j;
831 this->value.f[dst] = value->value.f[src];
835 /* "All other components will be initialized to the identity matrix." */
836 for (unsigned i = cols; i < type->matrix_columns; i++)
837 this->value.f[i * type->vector_elements + i] = 1.0;
842 /* Use each component from each entry in the value_list to initialize one
843 * component of the constant being constructed.
847 assert(value->as_constant() != NULL);
848 assert(!value->is_tail_sentinel());
850 for (unsigned j = 0; j < value->type->components(); j++) {
851 switch (type->base_type) {
853 this->value.u[i] = value->get_uint_component(j);
856 this->value.i[i] = value->get_int_component(j);
858 case GLSL_TYPE_FLOAT:
859 this->value.f[i] = value->get_float_component(j);
862 this->value.b[i] = value->get_bool_component(j);
864 case GLSL_TYPE_DOUBLE:
865 this->value.d[i] = value->get_double_component(j);
867 case GLSL_TYPE_UINT64:
868 this->value.u64[i] = value->get_uint64_component(j);
870 case GLSL_TYPE_INT64:
871 this->value.i64[i] = value->get_int64_component(j);
874 /* FINISHME: What to do? Exceptions are not the answer.
880 if (i >= type->components())
884 if (i >= type->components())
885 break; /* avoid downcasting a list sentinel */
886 value = (ir_constant *) value->next;
891 ir_constant::zero(void *mem_ctx, const glsl_type *type)
893 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
894 || type->is_record() || type->is_array());
896 ir_constant *c = new(mem_ctx) ir_constant;
898 memset(&c->value, 0, sizeof(c->value));
900 if (type->is_array()) {
901 c->array_elements = ralloc_array(c, ir_constant *, type->length);
903 for (unsigned i = 0; i < type->length; i++)
904 c->array_elements[i] = ir_constant::zero(c, type->fields.array);
907 if (type->is_record()) {
908 for (unsigned i = 0; i < type->length; i++) {
909 ir_constant *comp = ir_constant::zero(mem_ctx, type->fields.structure[i].type);
910 c->components.push_tail(comp);
918 ir_constant::get_bool_component(unsigned i) const
920 switch (this->type->base_type) {
921 case GLSL_TYPE_UINT: return this->value.u[i] != 0;
922 case GLSL_TYPE_INT: return this->value.i[i] != 0;
923 case GLSL_TYPE_FLOAT: return ((int)this->value.f[i]) != 0;
924 case GLSL_TYPE_BOOL: return this->value.b[i];
925 case GLSL_TYPE_DOUBLE: return this->value.d[i] != 0.0;
926 case GLSL_TYPE_UINT64: return this->value.u64[i] != 0;
927 case GLSL_TYPE_INT64: return this->value.i64[i] != 0;
928 default: assert(!"Should not get here."); break;
931 /* Must return something to make the compiler happy. This is clearly an
938 ir_constant::get_float_component(unsigned i) const
940 switch (this->type->base_type) {
941 case GLSL_TYPE_UINT: return (float) this->value.u[i];
942 case GLSL_TYPE_INT: return (float) this->value.i[i];
943 case GLSL_TYPE_FLOAT: return this->value.f[i];
944 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0f : 0.0f;
945 case GLSL_TYPE_DOUBLE: return (float) this->value.d[i];
946 case GLSL_TYPE_UINT64: return (float) this->value.u64[i];
947 case GLSL_TYPE_INT64: return (float) this->value.i64[i];
948 default: assert(!"Should not get here."); break;
951 /* Must return something to make the compiler happy. This is clearly an
958 ir_constant::get_double_component(unsigned i) const
960 switch (this->type->base_type) {
961 case GLSL_TYPE_UINT: return (double) this->value.u[i];
962 case GLSL_TYPE_INT: return (double) this->value.i[i];
963 case GLSL_TYPE_FLOAT: return (double) this->value.f[i];
964 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0 : 0.0;
965 case GLSL_TYPE_DOUBLE: return this->value.d[i];
966 case GLSL_TYPE_UINT64: return (double) this->value.u64[i];
967 case GLSL_TYPE_INT64: return (double) this->value.i64[i];
968 default: assert(!"Should not get here."); break;
971 /* Must return something to make the compiler happy. This is clearly an
978 ir_constant::get_int_component(unsigned i) const
980 switch (this->type->base_type) {
981 case GLSL_TYPE_UINT: return this->value.u[i];
982 case GLSL_TYPE_INT: return this->value.i[i];
983 case GLSL_TYPE_FLOAT: return (int) this->value.f[i];
984 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
985 case GLSL_TYPE_DOUBLE: return (int) this->value.d[i];
986 case GLSL_TYPE_UINT64: return (int) this->value.u64[i];
987 case GLSL_TYPE_INT64: return (int) this->value.i64[i];
988 default: assert(!"Should not get here."); break;
991 /* Must return something to make the compiler happy. This is clearly an
998 ir_constant::get_uint_component(unsigned i) const
1000 switch (this->type->base_type) {
1001 case GLSL_TYPE_UINT: return this->value.u[i];
1002 case GLSL_TYPE_INT: return this->value.i[i];
1003 case GLSL_TYPE_FLOAT: return (unsigned) this->value.f[i];
1004 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1005 case GLSL_TYPE_DOUBLE: return (unsigned) this->value.d[i];
1006 case GLSL_TYPE_UINT64: return (unsigned) this->value.u64[i];
1007 case GLSL_TYPE_INT64: return (unsigned) this->value.i64[i];
1008 default: assert(!"Should not get here."); break;
1011 /* Must return something to make the compiler happy. This is clearly an
1018 ir_constant::get_int64_component(unsigned i) const
1020 switch (this->type->base_type) {
1021 case GLSL_TYPE_UINT: return this->value.u[i];
1022 case GLSL_TYPE_INT: return this->value.i[i];
1023 case GLSL_TYPE_FLOAT: return (int64_t) this->value.f[i];
1024 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1025 case GLSL_TYPE_DOUBLE: return (int64_t) this->value.d[i];
1026 case GLSL_TYPE_UINT64: return (int64_t) this->value.u64[i];
1027 case GLSL_TYPE_INT64: return this->value.i64[i];
1028 default: assert(!"Should not get here."); break;
1031 /* Must return something to make the compiler happy. This is clearly an
1038 ir_constant::get_uint64_component(unsigned i) const
1040 switch (this->type->base_type) {
1041 case GLSL_TYPE_UINT: return this->value.u[i];
1042 case GLSL_TYPE_INT: return this->value.i[i];
1043 case GLSL_TYPE_FLOAT: return (uint64_t) this->value.f[i];
1044 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1045 case GLSL_TYPE_DOUBLE: return (uint64_t) this->value.d[i];
1046 case GLSL_TYPE_UINT64: return this->value.u64[i];
1047 case GLSL_TYPE_INT64: return (uint64_t) this->value.i64[i];
1048 default: assert(!"Should not get here."); break;
1051 /* Must return something to make the compiler happy. This is clearly an
1058 ir_constant::get_array_element(unsigned i) const
1060 assert(this->type->is_array());
1062 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1064 * "Behavior is undefined if a shader subscripts an array with an index
1065 * less than 0 or greater than or equal to the size the array was
1068 * Most out-of-bounds accesses are removed before things could get this far.
1069 * There are cases where non-constant array index values can get constant
1074 else if (i >= this->type->length)
1075 i = this->type->length - 1;
1077 return array_elements[i];
1081 ir_constant::get_record_field(const char *name)
1083 int idx = this->type->field_index(name);
1088 if (this->components.is_empty())
1091 exec_node *node = this->components.get_head_raw();
1092 for (int i = 0; i < idx; i++) {
1095 /* If the end of the list is encountered before the element matching the
1096 * requested field is found, return NULL.
1098 if (node->is_tail_sentinel())
1102 return (ir_constant *) node;
1106 ir_constant::copy_offset(ir_constant *src, int offset)
1108 switch (this->type->base_type) {
1109 case GLSL_TYPE_UINT:
1111 case GLSL_TYPE_FLOAT:
1112 case GLSL_TYPE_DOUBLE:
1113 case GLSL_TYPE_UINT64:
1114 case GLSL_TYPE_INT64:
1115 case GLSL_TYPE_BOOL: {
1116 unsigned int size = src->type->components();
1117 assert (size <= this->type->components() - offset);
1118 for (unsigned int i=0; i<size; i++) {
1119 switch (this->type->base_type) {
1120 case GLSL_TYPE_UINT:
1121 value.u[i+offset] = src->get_uint_component(i);
1124 value.i[i+offset] = src->get_int_component(i);
1126 case GLSL_TYPE_FLOAT:
1127 value.f[i+offset] = src->get_float_component(i);
1129 case GLSL_TYPE_BOOL:
1130 value.b[i+offset] = src->get_bool_component(i);
1132 case GLSL_TYPE_DOUBLE:
1133 value.d[i+offset] = src->get_double_component(i);
1135 case GLSL_TYPE_UINT64:
1136 value.u64[i+offset] = src->get_uint64_component(i);
1138 case GLSL_TYPE_INT64:
1139 value.i64[i+offset] = src->get_int64_component(i);
1141 default: // Shut up the compiler
1148 case GLSL_TYPE_STRUCT: {
1149 assert (src->type == this->type);
1150 this->components.make_empty();
1151 foreach_in_list(ir_constant, orig, &src->components) {
1152 this->components.push_tail(orig->clone(this, NULL));
1157 case GLSL_TYPE_ARRAY: {
1158 assert (src->type == this->type);
1159 for (unsigned i = 0; i < this->type->length; i++) {
1160 this->array_elements[i] = src->array_elements[i]->clone(this, NULL);
1166 assert(!"Should not get here.");
1172 ir_constant::copy_masked_offset(ir_constant *src, int offset, unsigned int mask)
1174 assert (!type->is_array() && !type->is_record());
1176 if (!type->is_vector() && !type->is_matrix()) {
1182 for (int i=0; i<4; i++) {
1183 if (mask & (1 << i)) {
1184 switch (this->type->base_type) {
1185 case GLSL_TYPE_UINT:
1186 value.u[i+offset] = src->get_uint_component(id++);
1189 value.i[i+offset] = src->get_int_component(id++);
1191 case GLSL_TYPE_FLOAT:
1192 value.f[i+offset] = src->get_float_component(id++);
1194 case GLSL_TYPE_BOOL:
1195 value.b[i+offset] = src->get_bool_component(id++);
1197 case GLSL_TYPE_DOUBLE:
1198 value.d[i+offset] = src->get_double_component(id++);
1200 case GLSL_TYPE_UINT64:
1201 value.u64[i+offset] = src->get_uint64_component(id++);
1203 case GLSL_TYPE_INT64:
1204 value.i64[i+offset] = src->get_int64_component(id++);
1207 assert(!"Should not get here.");
1215 ir_constant::has_value(const ir_constant *c) const
1217 if (this->type != c->type)
1220 if (this->type->is_array()) {
1221 for (unsigned i = 0; i < this->type->length; i++) {
1222 if (!this->array_elements[i]->has_value(c->array_elements[i]))
1228 if (this->type->base_type == GLSL_TYPE_STRUCT) {
1229 const exec_node *a_node = this->components.get_head_raw();
1230 const exec_node *b_node = c->components.get_head_raw();
1232 while (!a_node->is_tail_sentinel()) {
1233 assert(!b_node->is_tail_sentinel());
1235 const ir_constant *const a_field = (ir_constant *) a_node;
1236 const ir_constant *const b_field = (ir_constant *) b_node;
1238 if (!a_field->has_value(b_field))
1241 a_node = a_node->next;
1242 b_node = b_node->next;
1248 for (unsigned i = 0; i < this->type->components(); i++) {
1249 switch (this->type->base_type) {
1250 case GLSL_TYPE_UINT:
1251 if (this->value.u[i] != c->value.u[i])
1255 if (this->value.i[i] != c->value.i[i])
1258 case GLSL_TYPE_FLOAT:
1259 if (this->value.f[i] != c->value.f[i])
1262 case GLSL_TYPE_BOOL:
1263 if (this->value.b[i] != c->value.b[i])
1266 case GLSL_TYPE_DOUBLE:
1267 if (this->value.d[i] != c->value.d[i])
1270 case GLSL_TYPE_UINT64:
1271 if (this->value.u64[i] != c->value.u64[i])
1274 case GLSL_TYPE_INT64:
1275 if (this->value.i64[i] != c->value.i64[i])
1279 assert(!"Should not get here.");
1288 ir_constant::is_value(float f, int i) const
1290 if (!this->type->is_scalar() && !this->type->is_vector())
1293 /* Only accept boolean values for 0/1. */
1294 if (int(bool(i)) != i && this->type->is_boolean())
1297 for (unsigned c = 0; c < this->type->vector_elements; c++) {
1298 switch (this->type->base_type) {
1299 case GLSL_TYPE_FLOAT:
1300 if (this->value.f[c] != f)
1304 if (this->value.i[c] != i)
1307 case GLSL_TYPE_UINT:
1308 if (this->value.u[c] != unsigned(i))
1311 case GLSL_TYPE_BOOL:
1312 if (this->value.b[c] != bool(i))
1315 case GLSL_TYPE_DOUBLE:
1316 if (this->value.d[c] != double(f))
1319 case GLSL_TYPE_UINT64:
1320 if (this->value.u64[c] != uint64_t(i))
1323 case GLSL_TYPE_INT64:
1324 if (this->value.i64[c] != i)
1328 /* The only other base types are structures, arrays, and samplers.
1329 * Samplers cannot be constants, and the others should have been
1330 * filtered out above.
1332 assert(!"Should not get here.");
1341 ir_constant::is_zero() const
1343 return is_value(0.0, 0);
1347 ir_constant::is_one() const
1349 return is_value(1.0, 1);
1353 ir_constant::is_negative_one() const
1355 return is_value(-1.0, -1);
1359 ir_constant::is_uint16_constant() const
1361 if (!type->is_integer())
1364 return value.u[0] < (1 << 16);
1368 : ir_instruction(ir_type_loop)
1373 ir_dereference_variable::ir_dereference_variable(ir_variable *var)
1374 : ir_dereference(ir_type_dereference_variable)
1376 assert(var != NULL);
1379 this->type = var->type;
1383 ir_dereference_array::ir_dereference_array(ir_rvalue *value,
1384 ir_rvalue *array_index)
1385 : ir_dereference(ir_type_dereference_array)
1387 this->array_index = array_index;
1388 this->set_array(value);
1392 ir_dereference_array::ir_dereference_array(ir_variable *var,
1393 ir_rvalue *array_index)
1394 : ir_dereference(ir_type_dereference_array)
1396 void *ctx = ralloc_parent(var);
1398 this->array_index = array_index;
1399 this->set_array(new(ctx) ir_dereference_variable(var));
1404 ir_dereference_array::set_array(ir_rvalue *value)
1406 assert(value != NULL);
1408 this->array = value;
1410 const glsl_type *const vt = this->array->type;
1412 if (vt->is_array()) {
1413 type = vt->fields.array;
1414 } else if (vt->is_matrix()) {
1415 type = vt->column_type();
1416 } else if (vt->is_vector()) {
1417 type = vt->get_base_type();
1422 ir_dereference_record::ir_dereference_record(ir_rvalue *value,
1424 : ir_dereference(ir_type_dereference_record)
1426 assert(value != NULL);
1428 this->record = value;
1429 this->field = ralloc_strdup(this, field);
1430 this->type = this->record->type->field_type(field);
1434 ir_dereference_record::ir_dereference_record(ir_variable *var,
1436 : ir_dereference(ir_type_dereference_record)
1438 void *ctx = ralloc_parent(var);
1440 this->record = new(ctx) ir_dereference_variable(var);
1441 this->field = ralloc_strdup(this, field);
1442 this->type = this->record->type->field_type(field);
1446 ir_dereference::is_lvalue() const
1448 ir_variable *var = this->variable_referenced();
1450 /* Every l-value derference chain eventually ends in a variable.
1452 if ((var == NULL) || var->data.read_only)
1455 /* From section 4.1.7 of the GLSL 4.40 spec:
1457 * "Opaque variables cannot be treated as l-values; hence cannot
1458 * be used as out or inout function parameters, nor can they be
1461 if (this->type->contains_opaque())
1468 static const char * const tex_opcode_strs[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1470 const char *ir_texture::opcode_string()
1472 assert((unsigned int) op < ARRAY_SIZE(tex_opcode_strs));
1473 return tex_opcode_strs[op];
1477 ir_texture::get_opcode(const char *str)
1479 const int count = sizeof(tex_opcode_strs) / sizeof(tex_opcode_strs[0]);
1480 for (int op = 0; op < count; op++) {
1481 if (strcmp(str, tex_opcode_strs[op]) == 0)
1482 return (ir_texture_opcode) op;
1484 return (ir_texture_opcode) -1;
1489 ir_texture::set_sampler(ir_dereference *sampler, const glsl_type *type)
1491 assert(sampler != NULL);
1492 assert(type != NULL);
1493 this->sampler = sampler;
1496 if (this->op == ir_txs || this->op == ir_query_levels ||
1497 this->op == ir_texture_samples) {
1498 assert(type->base_type == GLSL_TYPE_INT);
1499 } else if (this->op == ir_lod) {
1500 assert(type->vector_elements == 2);
1501 assert(type->base_type == GLSL_TYPE_FLOAT);
1502 } else if (this->op == ir_samples_identical) {
1503 assert(type == glsl_type::bool_type);
1504 assert(sampler->type->base_type == GLSL_TYPE_SAMPLER);
1505 assert(sampler->type->sampler_dimensionality == GLSL_SAMPLER_DIM_MS);
1507 assert(sampler->type->sampled_type == (int) type->base_type);
1508 if (sampler->type->sampler_shadow)
1509 assert(type->vector_elements == 4 || type->vector_elements == 1);
1511 assert(type->vector_elements == 4);
1517 ir_swizzle::init_mask(const unsigned *comp, unsigned count)
1519 assert((count >= 1) && (count <= 4));
1521 memset(&this->mask, 0, sizeof(this->mask));
1522 this->mask.num_components = count;
1524 unsigned dup_mask = 0;
1527 assert(comp[3] <= 3);
1528 dup_mask |= (1U << comp[3])
1529 & ((1U << comp[0]) | (1U << comp[1]) | (1U << comp[2]));
1530 this->mask.w = comp[3];
1533 assert(comp[2] <= 3);
1534 dup_mask |= (1U << comp[2])
1535 & ((1U << comp[0]) | (1U << comp[1]));
1536 this->mask.z = comp[2];
1539 assert(comp[1] <= 3);
1540 dup_mask |= (1U << comp[1])
1541 & ((1U << comp[0]));
1542 this->mask.y = comp[1];
1545 assert(comp[0] <= 3);
1546 this->mask.x = comp[0];
1549 this->mask.has_duplicates = dup_mask != 0;
1551 /* Based on the number of elements in the swizzle and the base type
1552 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1553 * generate the type of the resulting value.
1555 type = glsl_type::get_instance(val->type->base_type, mask.num_components, 1);
1558 ir_swizzle::ir_swizzle(ir_rvalue *val, unsigned x, unsigned y, unsigned z,
1559 unsigned w, unsigned count)
1560 : ir_rvalue(ir_type_swizzle), val(val)
1562 const unsigned components[4] = { x, y, z, w };
1563 this->init_mask(components, count);
1566 ir_swizzle::ir_swizzle(ir_rvalue *val, const unsigned *comp,
1568 : ir_rvalue(ir_type_swizzle), val(val)
1570 this->init_mask(comp, count);
1573 ir_swizzle::ir_swizzle(ir_rvalue *val, ir_swizzle_mask mask)
1574 : ir_rvalue(ir_type_swizzle)
1578 this->type = glsl_type::get_instance(val->type->base_type,
1579 mask.num_components, 1);
1588 ir_swizzle::create(ir_rvalue *val, const char *str, unsigned vector_length)
1590 void *ctx = ralloc_parent(val);
1592 /* For each possible swizzle character, this table encodes the value in
1593 * \c idx_map that represents the 0th element of the vector. For invalid
1594 * swizzle characters (e.g., 'k'), a special value is used that will allow
1595 * detection of errors.
1597 static const unsigned char base_idx[26] = {
1598 /* a b c d e f g h i j k l m */
1599 R, R, I, I, I, I, R, I, I, I, I, I, I,
1600 /* n o p q r s t u v w x y z */
1601 I, I, S, S, R, S, S, I, I, X, X, X, X
1604 /* Each valid swizzle character has an entry in the previous table. This
1605 * table encodes the base index encoded in the previous table plus the actual
1606 * index of the swizzle character. When processing swizzles, the first
1607 * character in the string is indexed in the previous table. Each character
1608 * in the string is indexed in this table, and the value found there has the
1609 * value form the first table subtracted. The result must be on the range
1612 * For example, the string "wzyx" will get X from the first table. Each of
1613 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1614 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1616 * The string "wzrg" will get X from the first table. Each of the characters
1617 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1618 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1619 * [0,3], the error is detected.
1621 static const unsigned char idx_map[26] = {
1622 /* a b c d e f g h i j k l m */
1623 R+3, R+2, 0, 0, 0, 0, R+1, 0, 0, 0, 0, 0, 0,
1624 /* n o p q r s t u v w x y z */
1625 0, 0, S+2, S+3, R+0, S+0, S+1, 0, 0, X+3, X+0, X+1, X+2
1628 int swiz_idx[4] = { 0, 0, 0, 0 };
1632 /* Validate the first character in the swizzle string and look up the base
1633 * index value as described above.
1635 if ((str[0] < 'a') || (str[0] > 'z'))
1638 const unsigned base = base_idx[str[0] - 'a'];
1641 for (i = 0; (i < 4) && (str[i] != '\0'); i++) {
1642 /* Validate the next character, and, as described above, convert it to a
1645 if ((str[i] < 'a') || (str[i] > 'z'))
1648 swiz_idx[i] = idx_map[str[i] - 'a'] - base;
1649 if ((swiz_idx[i] < 0) || (swiz_idx[i] >= (int) vector_length))
1656 return new(ctx) ir_swizzle(val, swiz_idx[0], swiz_idx[1], swiz_idx[2],
1666 ir_swizzle::variable_referenced() const
1668 return this->val->variable_referenced();
1672 bool ir_variable::temporaries_allocate_names = false;
1674 const char ir_variable::tmp_name[] = "compiler_temp";
1676 ir_variable::ir_variable(const struct glsl_type *type, const char *name,
1677 ir_variable_mode mode)
1678 : ir_instruction(ir_type_variable)
1682 if (mode == ir_var_temporary && !ir_variable::temporaries_allocate_names)
1685 /* The ir_variable clone method may call this constructor with name set to
1689 || mode == ir_var_temporary
1690 || mode == ir_var_function_in
1691 || mode == ir_var_function_out
1692 || mode == ir_var_function_inout);
1693 assert(name != ir_variable::tmp_name
1694 || mode == ir_var_temporary);
1695 if (mode == ir_var_temporary
1696 && (name == NULL || name == ir_variable::tmp_name)) {
1697 this->name = ir_variable::tmp_name;
1698 } else if (name == NULL ||
1699 strlen(name) < ARRAY_SIZE(this->name_storage)) {
1700 strcpy(this->name_storage, name ? name : "");
1701 this->name = this->name_storage;
1703 this->name = ralloc_strdup(this, name);
1706 this->u.max_ifc_array_access = NULL;
1708 this->data.explicit_location = false;
1709 this->data.has_initializer = false;
1710 this->data.location = -1;
1711 this->data.location_frac = 0;
1712 this->data.binding = 0;
1713 this->data.warn_extension_index = 0;
1714 this->constant_value = NULL;
1715 this->constant_initializer = NULL;
1716 this->data.origin_upper_left = false;
1717 this->data.pixel_center_integer = false;
1718 this->data.depth_layout = ir_depth_layout_none;
1719 this->data.used = false;
1720 this->data.always_active_io = false;
1721 this->data.read_only = false;
1722 this->data.centroid = false;
1723 this->data.sample = false;
1724 this->data.patch = false;
1725 this->data.invariant = false;
1726 this->data.how_declared = ir_var_declared_normally;
1727 this->data.mode = mode;
1728 this->data.interpolation = INTERP_MODE_NONE;
1729 this->data.max_array_access = -1;
1730 this->data.offset = 0;
1731 this->data.precision = GLSL_PRECISION_NONE;
1732 this->data.image_read_only = false;
1733 this->data.image_write_only = false;
1734 this->data.image_coherent = false;
1735 this->data.image_volatile = false;
1736 this->data.image_restrict = false;
1737 this->data.from_ssbo_unsized_array = false;
1738 this->data.fb_fetch_output = false;
1741 if (type->base_type == GLSL_TYPE_SAMPLER)
1742 this->data.read_only = true;
1744 if (type->is_interface())
1745 this->init_interface_type(type);
1746 else if (type->without_array()->is_interface())
1747 this->init_interface_type(type->without_array());
1753 interpolation_string(unsigned interpolation)
1755 switch (interpolation) {
1756 case INTERP_MODE_NONE: return "no";
1757 case INTERP_MODE_SMOOTH: return "smooth";
1758 case INTERP_MODE_FLAT: return "flat";
1759 case INTERP_MODE_NOPERSPECTIVE: return "noperspective";
1762 assert(!"Should not get here.");
1766 const char *const ir_variable::warn_extension_table[] = {
1768 "GL_ARB_shader_stencil_export",
1769 "GL_AMD_shader_stencil_export",
1773 ir_variable::enable_extension_warning(const char *extension)
1775 for (unsigned i = 0; i < ARRAY_SIZE(warn_extension_table); i++) {
1776 if (strcmp(warn_extension_table[i], extension) == 0) {
1777 this->data.warn_extension_index = i;
1782 assert(!"Should not get here.");
1783 this->data.warn_extension_index = 0;
1787 ir_variable::get_extension_warning() const
1789 return this->data.warn_extension_index == 0
1790 ? NULL : warn_extension_table[this->data.warn_extension_index];
1793 ir_function_signature::ir_function_signature(const glsl_type *return_type,
1794 builtin_available_predicate b)
1795 : ir_instruction(ir_type_function_signature),
1796 return_type(return_type), is_defined(false),
1797 intrinsic_id(ir_intrinsic_invalid), builtin_avail(b), _function(NULL)
1799 this->origin = NULL;
1804 ir_function_signature::is_builtin() const
1806 return builtin_avail != NULL;
1811 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state *state) const
1813 /* We can't call the predicate without a state pointer, so just say that
1814 * the signature is available. At compile time, we need the filtering,
1815 * but also receive a valid state pointer. At link time, we're resolving
1816 * imported built-in prototypes to their definitions, which will always
1817 * be an exact match. So we can skip the filtering.
1822 assert(builtin_avail != NULL);
1823 return builtin_avail(state);
1828 modes_match(unsigned a, unsigned b)
1833 /* Accept "in" vs. "const in" */
1834 if ((a == ir_var_const_in && b == ir_var_function_in) ||
1835 (b == ir_var_const_in && a == ir_var_function_in))
1843 ir_function_signature::qualifiers_match(exec_list *params)
1845 /* check that the qualifiers match. */
1846 foreach_two_lists(a_node, &this->parameters, b_node, params) {
1847 ir_variable *a = (ir_variable *) a_node;
1848 ir_variable *b = (ir_variable *) b_node;
1850 if (a->data.read_only != b->data.read_only ||
1851 !modes_match(a->data.mode, b->data.mode) ||
1852 a->data.interpolation != b->data.interpolation ||
1853 a->data.centroid != b->data.centroid ||
1854 a->data.sample != b->data.sample ||
1855 a->data.patch != b->data.patch ||
1856 a->data.image_read_only != b->data.image_read_only ||
1857 a->data.image_write_only != b->data.image_write_only ||
1858 a->data.image_coherent != b->data.image_coherent ||
1859 a->data.image_volatile != b->data.image_volatile ||
1860 a->data.image_restrict != b->data.image_restrict) {
1862 /* parameter a's qualifiers don't match */
1871 ir_function_signature::replace_parameters(exec_list *new_params)
1873 /* Destroy all of the previous parameter information. If the previous
1874 * parameter information comes from the function prototype, it may either
1875 * specify incorrect parameter names or not have names at all.
1877 new_params->move_nodes_to(¶meters);
1881 ir_function::ir_function(const char *name)
1882 : ir_instruction(ir_type_function)
1884 this->subroutine_index = -1;
1885 this->name = ralloc_strdup(this, name);
1890 ir_function::has_user_signature()
1892 foreach_in_list(ir_function_signature, sig, &this->signatures) {
1893 if (!sig->is_builtin())
1901 ir_rvalue::error_value(void *mem_ctx)
1903 ir_rvalue *v = new(mem_ctx) ir_rvalue(ir_type_unset);
1905 v->type = glsl_type::error_type;
1911 visit_exec_list(exec_list *list, ir_visitor *visitor)
1913 foreach_in_list_safe(ir_instruction, node, list) {
1914 node->accept(visitor);
1920 steal_memory(ir_instruction *ir, void *new_ctx)
1922 ir_variable *var = ir->as_variable();
1923 ir_function *fn = ir->as_function();
1924 ir_constant *constant = ir->as_constant();
1925 if (var != NULL && var->constant_value != NULL)
1926 steal_memory(var->constant_value, ir);
1928 if (var != NULL && var->constant_initializer != NULL)
1929 steal_memory(var->constant_initializer, ir);
1931 if (fn != NULL && fn->subroutine_types)
1932 ralloc_steal(new_ctx, fn->subroutine_types);
1934 /* The components of aggregate constants are not visited by the normal
1935 * visitor, so steal their values by hand.
1937 if (constant != NULL) {
1938 if (constant->type->is_record()) {
1939 foreach_in_list(ir_constant, field, &constant->components) {
1940 steal_memory(field, ir);
1942 } else if (constant->type->is_array()) {
1943 for (unsigned int i = 0; i < constant->type->length; i++) {
1944 steal_memory(constant->array_elements[i], ir);
1949 ralloc_steal(new_ctx, ir);
1954 reparent_ir(exec_list *list, void *mem_ctx)
1956 foreach_in_list(ir_instruction, node, list) {
1957 visit_tree(node, steal_memory, mem_ctx);
1963 try_min_one(ir_rvalue *ir)
1965 ir_expression *expr = ir->as_expression();
1967 if (!expr || expr->operation != ir_binop_min)
1970 if (expr->operands[0]->is_one())
1971 return expr->operands[1];
1973 if (expr->operands[1]->is_one())
1974 return expr->operands[0];
1980 try_max_zero(ir_rvalue *ir)
1982 ir_expression *expr = ir->as_expression();
1984 if (!expr || expr->operation != ir_binop_max)
1987 if (expr->operands[0]->is_zero())
1988 return expr->operands[1];
1990 if (expr->operands[1]->is_zero())
1991 return expr->operands[0];
1997 ir_rvalue::as_rvalue_to_saturate()
1999 ir_expression *expr = this->as_expression();
2004 ir_rvalue *max_zero = try_max_zero(expr);
2006 return try_min_one(max_zero);
2008 ir_rvalue *min_one = try_min_one(expr);
2010 return try_max_zero(min_one);
2019 vertices_per_prim(GLenum prim)
2028 case GL_LINES_ADJACENCY:
2030 case GL_TRIANGLES_ADJACENCY:
2033 assert(!"Bad primitive");
2039 * Generate a string describing the mode of a variable
2042 mode_string(const ir_variable *var)
2044 switch (var->data.mode) {
2046 return (var->data.read_only) ? "global constant" : "global variable";
2048 case ir_var_uniform:
2051 case ir_var_shader_storage:
2054 case ir_var_shader_in:
2055 return "shader input";
2057 case ir_var_shader_out:
2058 return "shader output";
2060 case ir_var_function_in:
2061 case ir_var_const_in:
2062 return "function input";
2064 case ir_var_function_out:
2065 return "function output";
2067 case ir_var_function_inout:
2068 return "function inout";
2070 case ir_var_system_value:
2071 return "shader input";
2073 case ir_var_temporary:
2074 return "compiler temporary";
2076 case ir_var_mode_count:
2080 assert(!"Should not get here.");
2081 return "invalid variable";