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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_bitcast_i642d:
385 case ir_unop_bitcast_u642d:
386 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE,
387 op0->type->vector_elements, 1);
390 case ir_unop_bitcast_d2i64:
391 this->type = glsl_type::get_instance(GLSL_TYPE_INT64,
392 op0->type->vector_elements, 1);
394 case ir_unop_bitcast_d2u64:
395 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64,
396 op0->type->vector_elements, 1);
400 assert(!"not reached: missing automatic type setup for ir_expression");
401 this->type = op0->type;
406 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1)
407 : ir_rvalue(ir_type_expression)
409 this->operation = ir_expression_operation(op);
410 this->operands[0] = op0;
411 this->operands[1] = op1;
412 this->operands[2] = NULL;
413 this->operands[3] = NULL;
415 assert(op > ir_last_unop);
417 switch (this->operation) {
418 case ir_binop_all_equal:
419 case ir_binop_any_nequal:
420 this->type = glsl_type::bool_type;
431 if (op0->type->is_scalar()) {
432 this->type = op1->type;
433 } else if (op1->type->is_scalar()) {
434 this->type = op0->type;
436 if (this->operation == ir_binop_mul) {
437 this->type = glsl_type::get_mul_type(op0->type, op1->type);
439 assert(op0->type == op1->type);
440 this->type = op0->type;
445 case ir_binop_logic_and:
446 case ir_binop_logic_xor:
447 case ir_binop_logic_or:
448 case ir_binop_bit_and:
449 case ir_binop_bit_xor:
450 case ir_binop_bit_or:
451 assert(!op0->type->is_matrix());
452 assert(!op1->type->is_matrix());
453 if (op0->type->is_scalar()) {
454 this->type = op1->type;
455 } else if (op1->type->is_scalar()) {
456 this->type = op0->type;
458 assert(op0->type->vector_elements == op1->type->vector_elements);
459 this->type = op0->type;
464 case ir_binop_nequal:
465 case ir_binop_lequal:
466 case ir_binop_gequal:
468 case ir_binop_greater:
469 assert(op0->type == op1->type);
470 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL,
471 op0->type->vector_elements, 1);
475 this->type = op0->type->get_base_type();
478 case ir_binop_imul_high:
480 case ir_binop_borrow:
481 case ir_binop_lshift:
482 case ir_binop_rshift:
484 case ir_binop_interpolate_at_offset:
485 case ir_binop_interpolate_at_sample:
486 this->type = op0->type;
489 case ir_binop_vector_extract:
490 this->type = op0->type->get_scalar_type();
494 assert(!"not reached: missing automatic type setup for ir_expression");
495 this->type = glsl_type::float_type;
499 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1,
501 : ir_rvalue(ir_type_expression)
503 this->operation = ir_expression_operation(op);
504 this->operands[0] = op0;
505 this->operands[1] = op1;
506 this->operands[2] = op2;
507 this->operands[3] = NULL;
509 assert(op > ir_last_binop && op <= ir_last_triop);
511 switch (this->operation) {
514 case ir_triop_bitfield_extract:
515 case ir_triop_vector_insert:
516 this->type = op0->type;
520 this->type = op1->type;
524 assert(!"not reached: missing automatic type setup for ir_expression");
525 this->type = glsl_type::float_type;
530 ir_expression::get_num_operands(ir_expression_operation op)
532 assert(op <= ir_last_opcode);
534 if (op <= ir_last_unop)
537 if (op <= ir_last_binop)
540 if (op <= ir_last_triop)
543 if (op <= ir_last_quadop)
550 #include "ir_expression_operation_strings.h"
553 depth_layout_string(ir_depth_layout layout)
556 case ir_depth_layout_none: return "";
557 case ir_depth_layout_any: return "depth_any";
558 case ir_depth_layout_greater: return "depth_greater";
559 case ir_depth_layout_less: return "depth_less";
560 case ir_depth_layout_unchanged: return "depth_unchanged";
568 ir_expression_operation
569 ir_expression::get_operator(const char *str)
571 for (int op = 0; op <= int(ir_last_opcode); op++) {
572 if (strcmp(str, ir_expression_operation_strings[op]) == 0)
573 return (ir_expression_operation) op;
575 return (ir_expression_operation) -1;
579 ir_expression::variable_referenced() const
582 case ir_binop_vector_extract:
583 case ir_triop_vector_insert:
584 /* We get these for things like a[0] where a is a vector type. In these
585 * cases we want variable_referenced() to return the actual vector
586 * variable this is wrapping.
588 return operands[0]->variable_referenced();
590 return ir_rvalue::variable_referenced();
594 ir_constant::ir_constant()
595 : ir_rvalue(ir_type_constant)
597 this->array_elements = NULL;
600 ir_constant::ir_constant(const struct glsl_type *type,
601 const ir_constant_data *data)
602 : ir_rvalue(ir_type_constant)
604 this->array_elements = NULL;
606 assert((type->base_type >= GLSL_TYPE_UINT)
607 && (type->base_type <= GLSL_TYPE_BOOL));
610 memcpy(& this->value, data, sizeof(this->value));
613 ir_constant::ir_constant(float f, unsigned vector_elements)
614 : ir_rvalue(ir_type_constant)
616 assert(vector_elements <= 4);
617 this->type = glsl_type::get_instance(GLSL_TYPE_FLOAT, vector_elements, 1);
618 for (unsigned i = 0; i < vector_elements; i++) {
619 this->value.f[i] = f;
621 for (unsigned i = vector_elements; i < 16; i++) {
622 this->value.f[i] = 0;
626 ir_constant::ir_constant(double d, unsigned vector_elements)
627 : ir_rvalue(ir_type_constant)
629 assert(vector_elements <= 4);
630 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE, vector_elements, 1);
631 for (unsigned i = 0; i < vector_elements; i++) {
632 this->value.d[i] = d;
634 for (unsigned i = vector_elements; i < 16; i++) {
635 this->value.d[i] = 0.0;
639 ir_constant::ir_constant(unsigned int u, unsigned vector_elements)
640 : ir_rvalue(ir_type_constant)
642 assert(vector_elements <= 4);
643 this->type = glsl_type::get_instance(GLSL_TYPE_UINT, vector_elements, 1);
644 for (unsigned i = 0; i < vector_elements; i++) {
645 this->value.u[i] = u;
647 for (unsigned i = vector_elements; i < 16; i++) {
648 this->value.u[i] = 0;
652 ir_constant::ir_constant(int integer, unsigned vector_elements)
653 : ir_rvalue(ir_type_constant)
655 assert(vector_elements <= 4);
656 this->type = glsl_type::get_instance(GLSL_TYPE_INT, vector_elements, 1);
657 for (unsigned i = 0; i < vector_elements; i++) {
658 this->value.i[i] = integer;
660 for (unsigned i = vector_elements; i < 16; i++) {
661 this->value.i[i] = 0;
665 ir_constant::ir_constant(uint64_t u64, unsigned vector_elements)
666 : ir_rvalue(ir_type_constant)
668 assert(vector_elements <= 4);
669 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64, vector_elements, 1);
670 for (unsigned i = 0; i < vector_elements; i++) {
671 this->value.u64[i] = u64;
673 for (unsigned i = vector_elements; i < 16; i++) {
674 this->value.u64[i] = 0;
678 ir_constant::ir_constant(int64_t int64, unsigned vector_elements)
679 : ir_rvalue(ir_type_constant)
681 assert(vector_elements <= 4);
682 this->type = glsl_type::get_instance(GLSL_TYPE_INT64, vector_elements, 1);
683 for (unsigned i = 0; i < vector_elements; i++) {
684 this->value.i64[i] = int64;
686 for (unsigned i = vector_elements; i < 16; i++) {
687 this->value.i64[i] = 0;
691 ir_constant::ir_constant(bool b, unsigned vector_elements)
692 : ir_rvalue(ir_type_constant)
694 assert(vector_elements <= 4);
695 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL, vector_elements, 1);
696 for (unsigned i = 0; i < vector_elements; i++) {
697 this->value.b[i] = b;
699 for (unsigned i = vector_elements; i < 16; i++) {
700 this->value.b[i] = false;
704 ir_constant::ir_constant(const ir_constant *c, unsigned i)
705 : ir_rvalue(ir_type_constant)
707 this->array_elements = NULL;
708 this->type = c->type->get_base_type();
710 switch (this->type->base_type) {
711 case GLSL_TYPE_UINT: this->value.u[0] = c->value.u[i]; break;
712 case GLSL_TYPE_INT: this->value.i[0] = c->value.i[i]; break;
713 case GLSL_TYPE_FLOAT: this->value.f[0] = c->value.f[i]; break;
714 case GLSL_TYPE_BOOL: this->value.b[0] = c->value.b[i]; break;
715 case GLSL_TYPE_DOUBLE: this->value.d[0] = c->value.d[i]; break;
716 default: assert(!"Should not get here."); break;
720 ir_constant::ir_constant(const struct glsl_type *type, exec_list *value_list)
721 : ir_rvalue(ir_type_constant)
723 this->array_elements = NULL;
726 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
727 || type->is_record() || type->is_array());
729 if (type->is_array()) {
730 this->array_elements = ralloc_array(this, ir_constant *, type->length);
732 foreach_in_list(ir_constant, value, value_list) {
733 assert(value->as_constant() != NULL);
735 this->array_elements[i++] = value;
740 /* If the constant is a record, the types of each of the entries in
741 * value_list must be a 1-for-1 match with the structure components. Each
742 * entry must also be a constant. Just move the nodes from the value_list
743 * to the list in the ir_constant.
745 /* FINISHME: Should there be some type checking and / or assertions here? */
746 /* FINISHME: Should the new constant take ownership of the nodes from
747 * FINISHME: value_list, or should it make copies?
749 if (type->is_record()) {
750 value_list->move_nodes_to(& this->components);
754 for (unsigned i = 0; i < 16; i++) {
755 this->value.u[i] = 0;
758 ir_constant *value = (ir_constant *) (value_list->get_head_raw());
760 /* Constructors with exactly one scalar argument are special for vectors
761 * and matrices. For vectors, the scalar value is replicated to fill all
762 * the components. For matrices, the scalar fills the components of the
763 * diagonal while the rest is filled with 0.
765 if (value->type->is_scalar() && value->next->is_tail_sentinel()) {
766 if (type->is_matrix()) {
767 /* Matrix - fill diagonal (rest is already set to 0) */
768 assert(type->is_float() || type->is_double());
769 for (unsigned i = 0; i < type->matrix_columns; i++) {
770 if (type->is_float())
771 this->value.f[i * type->vector_elements + i] =
774 this->value.d[i * type->vector_elements + i] =
778 /* Vector or scalar - fill all components */
779 switch (type->base_type) {
782 for (unsigned i = 0; i < type->components(); i++)
783 this->value.u[i] = value->value.u[0];
785 case GLSL_TYPE_FLOAT:
786 for (unsigned i = 0; i < type->components(); i++)
787 this->value.f[i] = value->value.f[0];
789 case GLSL_TYPE_DOUBLE:
790 for (unsigned i = 0; i < type->components(); i++)
791 this->value.d[i] = value->value.d[0];
793 case GLSL_TYPE_UINT64:
794 case GLSL_TYPE_INT64:
795 for (unsigned i = 0; i < type->components(); i++)
796 this->value.u64[i] = value->value.u64[0];
799 for (unsigned i = 0; i < type->components(); i++)
800 this->value.b[i] = value->value.b[0];
803 assert(!"Should not get here.");
810 if (type->is_matrix() && value->type->is_matrix()) {
811 assert(value->next->is_tail_sentinel());
813 /* From section 5.4.2 of the GLSL 1.20 spec:
814 * "If a matrix is constructed from a matrix, then each component
815 * (column i, row j) in the result that has a corresponding component
816 * (column i, row j) in the argument will be initialized from there."
818 unsigned cols = MIN2(type->matrix_columns, value->type->matrix_columns);
819 unsigned rows = MIN2(type->vector_elements, value->type->vector_elements);
820 for (unsigned i = 0; i < cols; i++) {
821 for (unsigned j = 0; j < rows; j++) {
822 const unsigned src = i * value->type->vector_elements + j;
823 const unsigned dst = i * type->vector_elements + j;
824 this->value.f[dst] = value->value.f[src];
828 /* "All other components will be initialized to the identity matrix." */
829 for (unsigned i = cols; i < type->matrix_columns; i++)
830 this->value.f[i * type->vector_elements + i] = 1.0;
835 /* Use each component from each entry in the value_list to initialize one
836 * component of the constant being constructed.
840 assert(value->as_constant() != NULL);
841 assert(!value->is_tail_sentinel());
843 for (unsigned j = 0; j < value->type->components(); j++) {
844 switch (type->base_type) {
846 this->value.u[i] = value->get_uint_component(j);
849 this->value.i[i] = value->get_int_component(j);
851 case GLSL_TYPE_FLOAT:
852 this->value.f[i] = value->get_float_component(j);
855 this->value.b[i] = value->get_bool_component(j);
857 case GLSL_TYPE_DOUBLE:
858 this->value.d[i] = value->get_double_component(j);
860 case GLSL_TYPE_UINT64:
861 this->value.u64[i] = value->get_uint64_component(j);
863 case GLSL_TYPE_INT64:
864 this->value.i64[i] = value->get_int64_component(j);
867 /* FINISHME: What to do? Exceptions are not the answer.
873 if (i >= type->components())
877 if (i >= type->components())
878 break; /* avoid downcasting a list sentinel */
879 value = (ir_constant *) value->next;
884 ir_constant::zero(void *mem_ctx, const glsl_type *type)
886 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
887 || type->is_record() || type->is_array());
889 ir_constant *c = new(mem_ctx) ir_constant;
891 memset(&c->value, 0, sizeof(c->value));
893 if (type->is_array()) {
894 c->array_elements = ralloc_array(c, ir_constant *, type->length);
896 for (unsigned i = 0; i < type->length; i++)
897 c->array_elements[i] = ir_constant::zero(c, type->fields.array);
900 if (type->is_record()) {
901 for (unsigned i = 0; i < type->length; i++) {
902 ir_constant *comp = ir_constant::zero(mem_ctx, type->fields.structure[i].type);
903 c->components.push_tail(comp);
911 ir_constant::get_bool_component(unsigned i) const
913 switch (this->type->base_type) {
914 case GLSL_TYPE_UINT: return this->value.u[i] != 0;
915 case GLSL_TYPE_INT: return this->value.i[i] != 0;
916 case GLSL_TYPE_FLOAT: return ((int)this->value.f[i]) != 0;
917 case GLSL_TYPE_BOOL: return this->value.b[i];
918 case GLSL_TYPE_DOUBLE: return this->value.d[i] != 0.0;
919 case GLSL_TYPE_UINT64: return this->value.u64[i] != 0;
920 case GLSL_TYPE_INT64: return this->value.i64[i] != 0;
921 default: assert(!"Should not get here."); break;
924 /* Must return something to make the compiler happy. This is clearly an
931 ir_constant::get_float_component(unsigned i) const
933 switch (this->type->base_type) {
934 case GLSL_TYPE_UINT: return (float) this->value.u[i];
935 case GLSL_TYPE_INT: return (float) this->value.i[i];
936 case GLSL_TYPE_FLOAT: return this->value.f[i];
937 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0f : 0.0f;
938 case GLSL_TYPE_DOUBLE: return (float) this->value.d[i];
939 case GLSL_TYPE_UINT64: return (float) this->value.u64[i];
940 case GLSL_TYPE_INT64: return (float) this->value.i64[i];
941 default: assert(!"Should not get here."); break;
944 /* Must return something to make the compiler happy. This is clearly an
951 ir_constant::get_double_component(unsigned i) const
953 switch (this->type->base_type) {
954 case GLSL_TYPE_UINT: return (double) this->value.u[i];
955 case GLSL_TYPE_INT: return (double) this->value.i[i];
956 case GLSL_TYPE_FLOAT: return (double) this->value.f[i];
957 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0 : 0.0;
958 case GLSL_TYPE_DOUBLE: return this->value.d[i];
959 case GLSL_TYPE_UINT64: return (double) this->value.u64[i];
960 case GLSL_TYPE_INT64: return (double) this->value.i64[i];
961 default: assert(!"Should not get here."); break;
964 /* Must return something to make the compiler happy. This is clearly an
971 ir_constant::get_int_component(unsigned i) const
973 switch (this->type->base_type) {
974 case GLSL_TYPE_UINT: return this->value.u[i];
975 case GLSL_TYPE_INT: return this->value.i[i];
976 case GLSL_TYPE_FLOAT: return (int) this->value.f[i];
977 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
978 case GLSL_TYPE_DOUBLE: return (int) this->value.d[i];
979 case GLSL_TYPE_UINT64: return (int) this->value.u64[i];
980 case GLSL_TYPE_INT64: return (int) this->value.i64[i];
981 default: assert(!"Should not get here."); break;
984 /* Must return something to make the compiler happy. This is clearly an
991 ir_constant::get_uint_component(unsigned i) const
993 switch (this->type->base_type) {
994 case GLSL_TYPE_UINT: return this->value.u[i];
995 case GLSL_TYPE_INT: return this->value.i[i];
996 case GLSL_TYPE_FLOAT: return (unsigned) this->value.f[i];
997 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
998 case GLSL_TYPE_DOUBLE: return (unsigned) this->value.d[i];
999 case GLSL_TYPE_UINT64: return (unsigned) this->value.u64[i];
1000 case GLSL_TYPE_INT64: return (unsigned) this->value.i64[i];
1001 default: assert(!"Should not get here."); break;
1004 /* Must return something to make the compiler happy. This is clearly an
1011 ir_constant::get_int64_component(unsigned i) const
1013 switch (this->type->base_type) {
1014 case GLSL_TYPE_UINT: return this->value.u[i];
1015 case GLSL_TYPE_INT: return this->value.i[i];
1016 case GLSL_TYPE_FLOAT: return (int64_t) this->value.f[i];
1017 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1018 case GLSL_TYPE_DOUBLE: return (int64_t) this->value.d[i];
1019 case GLSL_TYPE_UINT64: return (int64_t) this->value.u64[i];
1020 case GLSL_TYPE_INT64: return this->value.i64[i];
1021 default: assert(!"Should not get here."); break;
1024 /* Must return something to make the compiler happy. This is clearly an
1031 ir_constant::get_uint64_component(unsigned i) const
1033 switch (this->type->base_type) {
1034 case GLSL_TYPE_UINT: return this->value.u[i];
1035 case GLSL_TYPE_INT: return this->value.i[i];
1036 case GLSL_TYPE_FLOAT: return (uint64_t) this->value.f[i];
1037 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1038 case GLSL_TYPE_DOUBLE: return (uint64_t) this->value.d[i];
1039 case GLSL_TYPE_UINT64: return this->value.u64[i];
1040 case GLSL_TYPE_INT64: return (uint64_t) this->value.i64[i];
1041 default: assert(!"Should not get here."); break;
1044 /* Must return something to make the compiler happy. This is clearly an
1051 ir_constant::get_array_element(unsigned i) const
1053 assert(this->type->is_array());
1055 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1057 * "Behavior is undefined if a shader subscripts an array with an index
1058 * less than 0 or greater than or equal to the size the array was
1061 * Most out-of-bounds accesses are removed before things could get this far.
1062 * There are cases where non-constant array index values can get constant
1067 else if (i >= this->type->length)
1068 i = this->type->length - 1;
1070 return array_elements[i];
1074 ir_constant::get_record_field(const char *name)
1076 int idx = this->type->field_index(name);
1081 if (this->components.is_empty())
1084 exec_node *node = this->components.get_head_raw();
1085 for (int i = 0; i < idx; i++) {
1088 /* If the end of the list is encountered before the element matching the
1089 * requested field is found, return NULL.
1091 if (node->is_tail_sentinel())
1095 return (ir_constant *) node;
1099 ir_constant::copy_offset(ir_constant *src, int offset)
1101 switch (this->type->base_type) {
1102 case GLSL_TYPE_UINT:
1104 case GLSL_TYPE_FLOAT:
1105 case GLSL_TYPE_DOUBLE:
1106 case GLSL_TYPE_UINT64:
1107 case GLSL_TYPE_INT64:
1108 case GLSL_TYPE_BOOL: {
1109 unsigned int size = src->type->components();
1110 assert (size <= this->type->components() - offset);
1111 for (unsigned int i=0; i<size; i++) {
1112 switch (this->type->base_type) {
1113 case GLSL_TYPE_UINT:
1114 value.u[i+offset] = src->get_uint_component(i);
1117 value.i[i+offset] = src->get_int_component(i);
1119 case GLSL_TYPE_FLOAT:
1120 value.f[i+offset] = src->get_float_component(i);
1122 case GLSL_TYPE_BOOL:
1123 value.b[i+offset] = src->get_bool_component(i);
1125 case GLSL_TYPE_DOUBLE:
1126 value.d[i+offset] = src->get_double_component(i);
1128 case GLSL_TYPE_UINT64:
1129 value.u64[i+offset] = src->get_uint64_component(i);
1131 case GLSL_TYPE_INT64:
1132 value.i64[i+offset] = src->get_int64_component(i);
1134 default: // Shut up the compiler
1141 case GLSL_TYPE_STRUCT: {
1142 assert (src->type == this->type);
1143 this->components.make_empty();
1144 foreach_in_list(ir_constant, orig, &src->components) {
1145 this->components.push_tail(orig->clone(this, NULL));
1150 case GLSL_TYPE_ARRAY: {
1151 assert (src->type == this->type);
1152 for (unsigned i = 0; i < this->type->length; i++) {
1153 this->array_elements[i] = src->array_elements[i]->clone(this, NULL);
1159 assert(!"Should not get here.");
1165 ir_constant::copy_masked_offset(ir_constant *src, int offset, unsigned int mask)
1167 assert (!type->is_array() && !type->is_record());
1169 if (!type->is_vector() && !type->is_matrix()) {
1175 for (int i=0; i<4; i++) {
1176 if (mask & (1 << i)) {
1177 switch (this->type->base_type) {
1178 case GLSL_TYPE_UINT:
1179 value.u[i+offset] = src->get_uint_component(id++);
1182 value.i[i+offset] = src->get_int_component(id++);
1184 case GLSL_TYPE_FLOAT:
1185 value.f[i+offset] = src->get_float_component(id++);
1187 case GLSL_TYPE_BOOL:
1188 value.b[i+offset] = src->get_bool_component(id++);
1190 case GLSL_TYPE_DOUBLE:
1191 value.d[i+offset] = src->get_double_component(id++);
1193 case GLSL_TYPE_UINT64:
1194 value.u64[i+offset] = src->get_uint64_component(id++);
1196 case GLSL_TYPE_INT64:
1197 value.i64[i+offset] = src->get_int64_component(id++);
1200 assert(!"Should not get here.");
1208 ir_constant::has_value(const ir_constant *c) const
1210 if (this->type != c->type)
1213 if (this->type->is_array()) {
1214 for (unsigned i = 0; i < this->type->length; i++) {
1215 if (!this->array_elements[i]->has_value(c->array_elements[i]))
1221 if (this->type->is_record()) {
1222 const exec_node *a_node = this->components.get_head_raw();
1223 const exec_node *b_node = c->components.get_head_raw();
1225 while (!a_node->is_tail_sentinel()) {
1226 assert(!b_node->is_tail_sentinel());
1228 const ir_constant *const a_field = (ir_constant *) a_node;
1229 const ir_constant *const b_field = (ir_constant *) b_node;
1231 if (!a_field->has_value(b_field))
1234 a_node = a_node->next;
1235 b_node = b_node->next;
1241 for (unsigned i = 0; i < this->type->components(); i++) {
1242 switch (this->type->base_type) {
1243 case GLSL_TYPE_UINT:
1244 if (this->value.u[i] != c->value.u[i])
1248 if (this->value.i[i] != c->value.i[i])
1251 case GLSL_TYPE_FLOAT:
1252 if (this->value.f[i] != c->value.f[i])
1255 case GLSL_TYPE_BOOL:
1256 if (this->value.b[i] != c->value.b[i])
1259 case GLSL_TYPE_DOUBLE:
1260 if (this->value.d[i] != c->value.d[i])
1263 case GLSL_TYPE_UINT64:
1264 if (this->value.u64[i] != c->value.u64[i])
1267 case GLSL_TYPE_INT64:
1268 if (this->value.i64[i] != c->value.i64[i])
1272 assert(!"Should not get here.");
1281 ir_constant::is_value(float f, int i) const
1283 if (!this->type->is_scalar() && !this->type->is_vector())
1286 /* Only accept boolean values for 0/1. */
1287 if (int(bool(i)) != i && this->type->is_boolean())
1290 for (unsigned c = 0; c < this->type->vector_elements; c++) {
1291 switch (this->type->base_type) {
1292 case GLSL_TYPE_FLOAT:
1293 if (this->value.f[c] != f)
1297 if (this->value.i[c] != i)
1300 case GLSL_TYPE_UINT:
1301 if (this->value.u[c] != unsigned(i))
1304 case GLSL_TYPE_BOOL:
1305 if (this->value.b[c] != bool(i))
1308 case GLSL_TYPE_DOUBLE:
1309 if (this->value.d[c] != double(f))
1312 case GLSL_TYPE_UINT64:
1313 if (this->value.u64[c] != uint64_t(i))
1316 case GLSL_TYPE_INT64:
1317 if (this->value.i64[c] != i)
1321 /* The only other base types are structures, arrays, and samplers.
1322 * Samplers cannot be constants, and the others should have been
1323 * filtered out above.
1325 assert(!"Should not get here.");
1334 ir_constant::is_zero() const
1336 return is_value(0.0, 0);
1340 ir_constant::is_one() const
1342 return is_value(1.0, 1);
1346 ir_constant::is_negative_one() const
1348 return is_value(-1.0, -1);
1352 ir_constant::is_uint16_constant() const
1354 if (!type->is_integer())
1357 return value.u[0] < (1 << 16);
1361 : ir_instruction(ir_type_loop)
1366 ir_dereference_variable::ir_dereference_variable(ir_variable *var)
1367 : ir_dereference(ir_type_dereference_variable)
1369 assert(var != NULL);
1372 this->type = var->type;
1376 ir_dereference_array::ir_dereference_array(ir_rvalue *value,
1377 ir_rvalue *array_index)
1378 : ir_dereference(ir_type_dereference_array)
1380 this->array_index = array_index;
1381 this->set_array(value);
1385 ir_dereference_array::ir_dereference_array(ir_variable *var,
1386 ir_rvalue *array_index)
1387 : ir_dereference(ir_type_dereference_array)
1389 void *ctx = ralloc_parent(var);
1391 this->array_index = array_index;
1392 this->set_array(new(ctx) ir_dereference_variable(var));
1397 ir_dereference_array::set_array(ir_rvalue *value)
1399 assert(value != NULL);
1401 this->array = value;
1403 const glsl_type *const vt = this->array->type;
1405 if (vt->is_array()) {
1406 type = vt->fields.array;
1407 } else if (vt->is_matrix()) {
1408 type = vt->column_type();
1409 } else if (vt->is_vector()) {
1410 type = vt->get_base_type();
1415 ir_dereference_record::ir_dereference_record(ir_rvalue *value,
1417 : ir_dereference(ir_type_dereference_record)
1419 assert(value != NULL);
1421 this->record = value;
1422 this->field = ralloc_strdup(this, field);
1423 this->type = this->record->type->field_type(field);
1427 ir_dereference_record::ir_dereference_record(ir_variable *var,
1429 : ir_dereference(ir_type_dereference_record)
1431 void *ctx = ralloc_parent(var);
1433 this->record = new(ctx) ir_dereference_variable(var);
1434 this->field = ralloc_strdup(this, field);
1435 this->type = this->record->type->field_type(field);
1439 ir_dereference::is_lvalue() const
1441 ir_variable *var = this->variable_referenced();
1443 /* Every l-value derference chain eventually ends in a variable.
1445 if ((var == NULL) || var->data.read_only)
1448 /* From section 4.1.7 of the GLSL 4.40 spec:
1450 * "Opaque variables cannot be treated as l-values; hence cannot
1451 * be used as out or inout function parameters, nor can they be
1454 if (this->type->contains_opaque())
1461 static const char * const tex_opcode_strs[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1463 const char *ir_texture::opcode_string()
1465 assert((unsigned int) op < ARRAY_SIZE(tex_opcode_strs));
1466 return tex_opcode_strs[op];
1470 ir_texture::get_opcode(const char *str)
1472 const int count = sizeof(tex_opcode_strs) / sizeof(tex_opcode_strs[0]);
1473 for (int op = 0; op < count; op++) {
1474 if (strcmp(str, tex_opcode_strs[op]) == 0)
1475 return (ir_texture_opcode) op;
1477 return (ir_texture_opcode) -1;
1482 ir_texture::set_sampler(ir_dereference *sampler, const glsl_type *type)
1484 assert(sampler != NULL);
1485 assert(type != NULL);
1486 this->sampler = sampler;
1489 if (this->op == ir_txs || this->op == ir_query_levels ||
1490 this->op == ir_texture_samples) {
1491 assert(type->base_type == GLSL_TYPE_INT);
1492 } else if (this->op == ir_lod) {
1493 assert(type->vector_elements == 2);
1494 assert(type->is_float());
1495 } else if (this->op == ir_samples_identical) {
1496 assert(type == glsl_type::bool_type);
1497 assert(sampler->type->is_sampler());
1498 assert(sampler->type->sampler_dimensionality == GLSL_SAMPLER_DIM_MS);
1500 assert(sampler->type->sampled_type == (int) type->base_type);
1501 if (sampler->type->sampler_shadow)
1502 assert(type->vector_elements == 4 || type->vector_elements == 1);
1504 assert(type->vector_elements == 4);
1510 ir_swizzle::init_mask(const unsigned *comp, unsigned count)
1512 assert((count >= 1) && (count <= 4));
1514 memset(&this->mask, 0, sizeof(this->mask));
1515 this->mask.num_components = count;
1517 unsigned dup_mask = 0;
1520 assert(comp[3] <= 3);
1521 dup_mask |= (1U << comp[3])
1522 & ((1U << comp[0]) | (1U << comp[1]) | (1U << comp[2]));
1523 this->mask.w = comp[3];
1526 assert(comp[2] <= 3);
1527 dup_mask |= (1U << comp[2])
1528 & ((1U << comp[0]) | (1U << comp[1]));
1529 this->mask.z = comp[2];
1532 assert(comp[1] <= 3);
1533 dup_mask |= (1U << comp[1])
1534 & ((1U << comp[0]));
1535 this->mask.y = comp[1];
1538 assert(comp[0] <= 3);
1539 this->mask.x = comp[0];
1542 this->mask.has_duplicates = dup_mask != 0;
1544 /* Based on the number of elements in the swizzle and the base type
1545 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1546 * generate the type of the resulting value.
1548 type = glsl_type::get_instance(val->type->base_type, mask.num_components, 1);
1551 ir_swizzle::ir_swizzle(ir_rvalue *val, unsigned x, unsigned y, unsigned z,
1552 unsigned w, unsigned count)
1553 : ir_rvalue(ir_type_swizzle), val(val)
1555 const unsigned components[4] = { x, y, z, w };
1556 this->init_mask(components, count);
1559 ir_swizzle::ir_swizzle(ir_rvalue *val, const unsigned *comp,
1561 : ir_rvalue(ir_type_swizzle), val(val)
1563 this->init_mask(comp, count);
1566 ir_swizzle::ir_swizzle(ir_rvalue *val, ir_swizzle_mask mask)
1567 : ir_rvalue(ir_type_swizzle)
1571 this->type = glsl_type::get_instance(val->type->base_type,
1572 mask.num_components, 1);
1581 ir_swizzle::create(ir_rvalue *val, const char *str, unsigned vector_length)
1583 void *ctx = ralloc_parent(val);
1585 /* For each possible swizzle character, this table encodes the value in
1586 * \c idx_map that represents the 0th element of the vector. For invalid
1587 * swizzle characters (e.g., 'k'), a special value is used that will allow
1588 * detection of errors.
1590 static const unsigned char base_idx[26] = {
1591 /* a b c d e f g h i j k l m */
1592 R, R, I, I, I, I, R, I, I, I, I, I, I,
1593 /* n o p q r s t u v w x y z */
1594 I, I, S, S, R, S, S, I, I, X, X, X, X
1597 /* Each valid swizzle character has an entry in the previous table. This
1598 * table encodes the base index encoded in the previous table plus the actual
1599 * index of the swizzle character. When processing swizzles, the first
1600 * character in the string is indexed in the previous table. Each character
1601 * in the string is indexed in this table, and the value found there has the
1602 * value form the first table subtracted. The result must be on the range
1605 * For example, the string "wzyx" will get X from the first table. Each of
1606 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1607 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1609 * The string "wzrg" will get X from the first table. Each of the characters
1610 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1611 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1612 * [0,3], the error is detected.
1614 static const unsigned char idx_map[26] = {
1615 /* a b c d e f g h i j k l m */
1616 R+3, R+2, 0, 0, 0, 0, R+1, 0, 0, 0, 0, 0, 0,
1617 /* n o p q r s t u v w x y z */
1618 0, 0, S+2, S+3, R+0, S+0, S+1, 0, 0, X+3, X+0, X+1, X+2
1621 int swiz_idx[4] = { 0, 0, 0, 0 };
1625 /* Validate the first character in the swizzle string and look up the base
1626 * index value as described above.
1628 if ((str[0] < 'a') || (str[0] > 'z'))
1631 const unsigned base = base_idx[str[0] - 'a'];
1634 for (i = 0; (i < 4) && (str[i] != '\0'); i++) {
1635 /* Validate the next character, and, as described above, convert it to a
1638 if ((str[i] < 'a') || (str[i] > 'z'))
1641 swiz_idx[i] = idx_map[str[i] - 'a'] - base;
1642 if ((swiz_idx[i] < 0) || (swiz_idx[i] >= (int) vector_length))
1649 return new(ctx) ir_swizzle(val, swiz_idx[0], swiz_idx[1], swiz_idx[2],
1659 ir_swizzle::variable_referenced() const
1661 return this->val->variable_referenced();
1665 bool ir_variable::temporaries_allocate_names = false;
1667 const char ir_variable::tmp_name[] = "compiler_temp";
1669 ir_variable::ir_variable(const struct glsl_type *type, const char *name,
1670 ir_variable_mode mode)
1671 : ir_instruction(ir_type_variable)
1675 if (mode == ir_var_temporary && !ir_variable::temporaries_allocate_names)
1678 /* The ir_variable clone method may call this constructor with name set to
1682 || mode == ir_var_temporary
1683 || mode == ir_var_function_in
1684 || mode == ir_var_function_out
1685 || mode == ir_var_function_inout);
1686 assert(name != ir_variable::tmp_name
1687 || mode == ir_var_temporary);
1688 if (mode == ir_var_temporary
1689 && (name == NULL || name == ir_variable::tmp_name)) {
1690 this->name = ir_variable::tmp_name;
1691 } else if (name == NULL ||
1692 strlen(name) < ARRAY_SIZE(this->name_storage)) {
1693 strcpy(this->name_storage, name ? name : "");
1694 this->name = this->name_storage;
1696 this->name = ralloc_strdup(this, name);
1699 this->u.max_ifc_array_access = NULL;
1701 this->data.explicit_location = false;
1702 this->data.has_initializer = false;
1703 this->data.location = -1;
1704 this->data.location_frac = 0;
1705 this->data.binding = 0;
1706 this->data.warn_extension_index = 0;
1707 this->constant_value = NULL;
1708 this->constant_initializer = NULL;
1709 this->data.origin_upper_left = false;
1710 this->data.pixel_center_integer = false;
1711 this->data.depth_layout = ir_depth_layout_none;
1712 this->data.used = false;
1713 this->data.always_active_io = false;
1714 this->data.read_only = false;
1715 this->data.centroid = false;
1716 this->data.sample = false;
1717 this->data.patch = false;
1718 this->data.invariant = false;
1719 this->data.how_declared = ir_var_declared_normally;
1720 this->data.mode = mode;
1721 this->data.interpolation = INTERP_MODE_NONE;
1722 this->data.max_array_access = -1;
1723 this->data.offset = 0;
1724 this->data.precision = GLSL_PRECISION_NONE;
1725 this->data.memory_read_only = false;
1726 this->data.memory_write_only = false;
1727 this->data.memory_coherent = false;
1728 this->data.memory_volatile = false;
1729 this->data.memory_restrict = false;
1730 this->data.from_ssbo_unsized_array = false;
1731 this->data.fb_fetch_output = false;
1732 this->data.bindless = false;
1733 this->data.bound = false;
1736 if (type->is_interface())
1737 this->init_interface_type(type);
1738 else if (type->without_array()->is_interface())
1739 this->init_interface_type(type->without_array());
1745 interpolation_string(unsigned interpolation)
1747 switch (interpolation) {
1748 case INTERP_MODE_NONE: return "no";
1749 case INTERP_MODE_SMOOTH: return "smooth";
1750 case INTERP_MODE_FLAT: return "flat";
1751 case INTERP_MODE_NOPERSPECTIVE: return "noperspective";
1754 assert(!"Should not get here.");
1758 const char *const ir_variable::warn_extension_table[] = {
1760 "GL_ARB_shader_stencil_export",
1761 "GL_AMD_shader_stencil_export",
1765 ir_variable::enable_extension_warning(const char *extension)
1767 for (unsigned i = 0; i < ARRAY_SIZE(warn_extension_table); i++) {
1768 if (strcmp(warn_extension_table[i], extension) == 0) {
1769 this->data.warn_extension_index = i;
1774 assert(!"Should not get here.");
1775 this->data.warn_extension_index = 0;
1779 ir_variable::get_extension_warning() const
1781 return this->data.warn_extension_index == 0
1782 ? NULL : warn_extension_table[this->data.warn_extension_index];
1785 ir_function_signature::ir_function_signature(const glsl_type *return_type,
1786 builtin_available_predicate b)
1787 : ir_instruction(ir_type_function_signature),
1788 return_type(return_type), is_defined(false),
1789 intrinsic_id(ir_intrinsic_invalid), builtin_avail(b), _function(NULL)
1791 this->origin = NULL;
1796 ir_function_signature::is_builtin() const
1798 return builtin_avail != NULL;
1803 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state *state) const
1805 /* We can't call the predicate without a state pointer, so just say that
1806 * the signature is available. At compile time, we need the filtering,
1807 * but also receive a valid state pointer. At link time, we're resolving
1808 * imported built-in prototypes to their definitions, which will always
1809 * be an exact match. So we can skip the filtering.
1814 assert(builtin_avail != NULL);
1815 return builtin_avail(state);
1820 modes_match(unsigned a, unsigned b)
1825 /* Accept "in" vs. "const in" */
1826 if ((a == ir_var_const_in && b == ir_var_function_in) ||
1827 (b == ir_var_const_in && a == ir_var_function_in))
1835 ir_function_signature::qualifiers_match(exec_list *params)
1837 /* check that the qualifiers match. */
1838 foreach_two_lists(a_node, &this->parameters, b_node, params) {
1839 ir_variable *a = (ir_variable *) a_node;
1840 ir_variable *b = (ir_variable *) b_node;
1842 if (a->data.read_only != b->data.read_only ||
1843 !modes_match(a->data.mode, b->data.mode) ||
1844 a->data.interpolation != b->data.interpolation ||
1845 a->data.centroid != b->data.centroid ||
1846 a->data.sample != b->data.sample ||
1847 a->data.patch != b->data.patch ||
1848 a->data.memory_read_only != b->data.memory_read_only ||
1849 a->data.memory_write_only != b->data.memory_write_only ||
1850 a->data.memory_coherent != b->data.memory_coherent ||
1851 a->data.memory_volatile != b->data.memory_volatile ||
1852 a->data.memory_restrict != b->data.memory_restrict) {
1854 /* parameter a's qualifiers don't match */
1863 ir_function_signature::replace_parameters(exec_list *new_params)
1865 /* Destroy all of the previous parameter information. If the previous
1866 * parameter information comes from the function prototype, it may either
1867 * specify incorrect parameter names or not have names at all.
1869 new_params->move_nodes_to(¶meters);
1873 ir_function::ir_function(const char *name)
1874 : ir_instruction(ir_type_function)
1876 this->subroutine_index = -1;
1877 this->name = ralloc_strdup(this, name);
1882 ir_function::has_user_signature()
1884 foreach_in_list(ir_function_signature, sig, &this->signatures) {
1885 if (!sig->is_builtin())
1893 ir_rvalue::error_value(void *mem_ctx)
1895 ir_rvalue *v = new(mem_ctx) ir_rvalue(ir_type_unset);
1897 v->type = glsl_type::error_type;
1903 visit_exec_list(exec_list *list, ir_visitor *visitor)
1905 foreach_in_list_safe(ir_instruction, node, list) {
1906 node->accept(visitor);
1912 steal_memory(ir_instruction *ir, void *new_ctx)
1914 ir_variable *var = ir->as_variable();
1915 ir_function *fn = ir->as_function();
1916 ir_constant *constant = ir->as_constant();
1917 if (var != NULL && var->constant_value != NULL)
1918 steal_memory(var->constant_value, ir);
1920 if (var != NULL && var->constant_initializer != NULL)
1921 steal_memory(var->constant_initializer, ir);
1923 if (fn != NULL && fn->subroutine_types)
1924 ralloc_steal(new_ctx, fn->subroutine_types);
1926 /* The components of aggregate constants are not visited by the normal
1927 * visitor, so steal their values by hand.
1929 if (constant != NULL) {
1930 if (constant->type->is_record()) {
1931 foreach_in_list(ir_constant, field, &constant->components) {
1932 steal_memory(field, ir);
1934 } else if (constant->type->is_array()) {
1935 for (unsigned int i = 0; i < constant->type->length; i++) {
1936 steal_memory(constant->array_elements[i], ir);
1941 ralloc_steal(new_ctx, ir);
1946 reparent_ir(exec_list *list, void *mem_ctx)
1948 foreach_in_list(ir_instruction, node, list) {
1949 visit_tree(node, steal_memory, mem_ctx);
1955 try_min_one(ir_rvalue *ir)
1957 ir_expression *expr = ir->as_expression();
1959 if (!expr || expr->operation != ir_binop_min)
1962 if (expr->operands[0]->is_one())
1963 return expr->operands[1];
1965 if (expr->operands[1]->is_one())
1966 return expr->operands[0];
1972 try_max_zero(ir_rvalue *ir)
1974 ir_expression *expr = ir->as_expression();
1976 if (!expr || expr->operation != ir_binop_max)
1979 if (expr->operands[0]->is_zero())
1980 return expr->operands[1];
1982 if (expr->operands[1]->is_zero())
1983 return expr->operands[0];
1989 ir_rvalue::as_rvalue_to_saturate()
1991 ir_expression *expr = this->as_expression();
1996 ir_rvalue *max_zero = try_max_zero(expr);
1998 return try_min_one(max_zero);
2000 ir_rvalue *min_one = try_min_one(expr);
2002 return try_max_zero(min_one);
2011 vertices_per_prim(GLenum prim)
2020 case GL_LINES_ADJACENCY:
2022 case GL_TRIANGLES_ADJACENCY:
2025 assert(!"Bad primitive");
2031 * Generate a string describing the mode of a variable
2034 mode_string(const ir_variable *var)
2036 switch (var->data.mode) {
2038 return (var->data.read_only) ? "global constant" : "global variable";
2040 case ir_var_uniform:
2043 case ir_var_shader_storage:
2046 case ir_var_shader_in:
2047 return "shader input";
2049 case ir_var_shader_out:
2050 return "shader output";
2052 case ir_var_function_in:
2053 case ir_var_const_in:
2054 return "function input";
2056 case ir_var_function_out:
2057 return "function output";
2059 case ir_var_function_inout:
2060 return "function inout";
2062 case ir_var_system_value:
2063 return "shader input";
2065 case ir_var_temporary:
2066 return "compiler temporary";
2068 case ir_var_mode_count:
2072 assert(!"Should not get here.");
2073 return "invalid variable";