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21 * DEALINGS IN THE SOFTWARE.
24 #include "main/core.h" /* for MAX2 */
26 #include "compiler/glsl_types.h"
27 #include "glsl_parser_extras.h"
30 ir_rvalue::ir_rvalue(enum ir_node_type t)
33 this->type = glsl_type::error_type;
36 bool ir_rvalue::is_zero() const
41 bool ir_rvalue::is_one() const
46 bool ir_rvalue::is_negative_one() const
52 * Modify the swizzle make to move one component to another
54 * \param m IR swizzle to be modified
55 * \param from Component in the RHS that is to be swizzled
56 * \param to Desired swizzle location of \c from
59 update_rhs_swizzle(ir_swizzle_mask &m, unsigned from, unsigned to)
62 case 0: m.x = from; break;
63 case 1: m.y = from; break;
64 case 2: m.z = from; break;
65 case 3: m.w = from; break;
66 default: assert(!"Should not get here.");
71 ir_assignment::set_lhs(ir_rvalue *lhs)
74 bool swizzled = false;
77 ir_swizzle *swiz = lhs->as_swizzle();
82 unsigned write_mask = 0;
83 ir_swizzle_mask rhs_swiz = { 0, 0, 0, 0, 0, 0 };
85 for (unsigned i = 0; i < swiz->mask.num_components; i++) {
89 case 0: c = swiz->mask.x; break;
90 case 1: c = swiz->mask.y; break;
91 case 2: c = swiz->mask.z; break;
92 case 3: c = swiz->mask.w; break;
93 default: assert(!"Should not get here.");
96 write_mask |= (((this->write_mask >> i) & 1) << c);
97 update_rhs_swizzle(rhs_swiz, i, c);
98 rhs_swiz.num_components = swiz->val->type->vector_elements;
101 this->write_mask = write_mask;
104 this->rhs = new(mem_ctx) ir_swizzle(this->rhs, rhs_swiz);
109 /* Now, RHS channels line up with the LHS writemask. Collapse it
110 * to just the channels that will be written.
112 ir_swizzle_mask rhs_swiz = { 0, 0, 0, 0, 0, 0 };
114 for (int i = 0; i < 4; i++) {
115 if (write_mask & (1 << i))
116 update_rhs_swizzle(rhs_swiz, i, rhs_chan++);
118 rhs_swiz.num_components = rhs_chan;
119 this->rhs = new(mem_ctx) ir_swizzle(this->rhs, rhs_swiz);
122 assert((lhs == NULL) || lhs->as_dereference());
124 this->lhs = (ir_dereference *) lhs;
128 ir_assignment::whole_variable_written()
130 ir_variable *v = this->lhs->whole_variable_referenced();
135 if (v->type->is_scalar())
138 if (v->type->is_vector()) {
139 const unsigned mask = (1U << v->type->vector_elements) - 1;
141 if (mask != this->write_mask)
145 /* Either all the vector components are assigned or the variable is some
146 * composite type (and the whole thing is assigned.
151 ir_assignment::ir_assignment(ir_dereference *lhs, ir_rvalue *rhs,
152 ir_rvalue *condition, unsigned write_mask)
153 : ir_instruction(ir_type_assignment)
155 this->condition = condition;
158 this->write_mask = write_mask;
160 if (lhs->type->is_scalar() || lhs->type->is_vector()) {
161 int lhs_components = 0;
162 for (int i = 0; i < 4; i++) {
163 if (write_mask & (1 << i))
167 assert(lhs_components == this->rhs->type->vector_elements);
171 ir_assignment::ir_assignment(ir_rvalue *lhs, ir_rvalue *rhs,
172 ir_rvalue *condition)
173 : ir_instruction(ir_type_assignment)
175 this->condition = condition;
178 /* If the RHS is a vector type, assume that all components of the vector
179 * type are being written to the LHS. The write mask comes from the RHS
180 * because we can have a case where the LHS is a vec4 and the RHS is a
181 * vec3. In that case, the assignment is:
183 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
185 if (rhs->type->is_vector())
186 this->write_mask = (1U << rhs->type->vector_elements) - 1;
187 else if (rhs->type->is_scalar())
188 this->write_mask = 1;
190 this->write_mask = 0;
195 ir_expression::ir_expression(int op, const struct glsl_type *type,
196 ir_rvalue *op0, ir_rvalue *op1,
197 ir_rvalue *op2, ir_rvalue *op3)
198 : ir_rvalue(ir_type_expression)
201 this->operation = ir_expression_operation(op);
202 this->operands[0] = op0;
203 this->operands[1] = op1;
204 this->operands[2] = op2;
205 this->operands[3] = op3;
207 int num_operands = get_num_operands(this->operation);
208 for (int i = num_operands; i < 4; i++) {
209 assert(this->operands[i] == NULL);
214 ir_expression::ir_expression(int op, ir_rvalue *op0)
215 : ir_rvalue(ir_type_expression)
217 this->operation = ir_expression_operation(op);
218 this->operands[0] = op0;
219 this->operands[1] = NULL;
220 this->operands[2] = NULL;
221 this->operands[3] = NULL;
223 assert(op <= ir_last_unop);
225 switch (this->operation) {
226 case ir_unop_bit_not:
227 case ir_unop_logic_not:
242 case ir_unop_round_even:
246 case ir_unop_dFdx_coarse:
247 case ir_unop_dFdx_fine:
249 case ir_unop_dFdy_coarse:
250 case ir_unop_dFdy_fine:
251 case ir_unop_bitfield_reverse:
252 case ir_unop_interpolate_at_centroid:
253 case ir_unop_saturate:
254 this->type = op0->type;
261 case ir_unop_bitcast_f2i:
262 case ir_unop_bit_count:
263 case ir_unop_find_msb:
264 case ir_unop_find_lsb:
265 case ir_unop_subroutine_to_int:
268 this->type = glsl_type::get_instance(GLSL_TYPE_INT,
269 op0->type->vector_elements, 1);
276 case ir_unop_bitcast_i2f:
277 case ir_unop_bitcast_u2f:
280 this->type = glsl_type::get_instance(GLSL_TYPE_FLOAT,
281 op0->type->vector_elements, 1);
288 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL,
289 op0->type->vector_elements, 1);
297 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE,
298 op0->type->vector_elements, 1);
304 case ir_unop_bitcast_f2u:
307 this->type = glsl_type::get_instance(GLSL_TYPE_UINT,
308 op0->type->vector_elements, 1);
316 case ir_unop_u642i64:
317 this->type = glsl_type::get_instance(GLSL_TYPE_INT64,
318 op0->type->vector_elements, 1);
325 case ir_unop_i642u64:
326 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64,
327 op0->type->vector_elements, 1);
330 this->type = glsl_type::float_type;
333 case ir_unop_unpack_double_2x32:
334 case ir_unop_unpack_uint_2x32:
335 this->type = glsl_type::uvec2_type;
338 case ir_unop_unpack_int_2x32:
339 this->type = glsl_type::ivec2_type;
342 case ir_unop_pack_snorm_2x16:
343 case ir_unop_pack_snorm_4x8:
344 case ir_unop_pack_unorm_2x16:
345 case ir_unop_pack_unorm_4x8:
346 case ir_unop_pack_half_2x16:
347 this->type = glsl_type::uint_type;
350 case ir_unop_pack_double_2x32:
351 this->type = glsl_type::double_type;
354 case ir_unop_pack_int_2x32:
355 this->type = glsl_type::int64_t_type;
358 case ir_unop_pack_uint_2x32:
359 this->type = glsl_type::uint64_t_type;
362 case ir_unop_unpack_snorm_2x16:
363 case ir_unop_unpack_unorm_2x16:
364 case ir_unop_unpack_half_2x16:
365 this->type = glsl_type::vec2_type;
368 case ir_unop_unpack_snorm_4x8:
369 case ir_unop_unpack_unorm_4x8:
370 this->type = glsl_type::vec4_type;
373 case ir_unop_unpack_sampler_2x32:
374 case ir_unop_unpack_image_2x32:
375 this->type = glsl_type::uvec2_type;
378 case ir_unop_pack_sampler_2x32:
379 case ir_unop_pack_image_2x32:
380 this->type = op0->type;
383 case ir_unop_frexp_sig:
384 this->type = op0->type;
386 case ir_unop_frexp_exp:
387 this->type = glsl_type::get_instance(GLSL_TYPE_INT,
388 op0->type->vector_elements, 1);
391 case ir_unop_get_buffer_size:
392 case ir_unop_ssbo_unsized_array_length:
393 this->type = glsl_type::int_type;
396 case ir_unop_bitcast_i642d:
397 case ir_unop_bitcast_u642d:
398 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE,
399 op0->type->vector_elements, 1);
402 case ir_unop_bitcast_d2i64:
403 this->type = glsl_type::get_instance(GLSL_TYPE_INT64,
404 op0->type->vector_elements, 1);
406 case ir_unop_bitcast_d2u64:
407 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64,
408 op0->type->vector_elements, 1);
412 assert(!"not reached: missing automatic type setup for ir_expression");
413 this->type = op0->type;
418 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1)
419 : ir_rvalue(ir_type_expression)
421 this->operation = ir_expression_operation(op);
422 this->operands[0] = op0;
423 this->operands[1] = op1;
424 this->operands[2] = NULL;
425 this->operands[3] = NULL;
427 assert(op > ir_last_unop);
429 switch (this->operation) {
430 case ir_binop_all_equal:
431 case ir_binop_any_nequal:
432 this->type = glsl_type::bool_type;
443 if (op0->type->is_scalar()) {
444 this->type = op1->type;
445 } else if (op1->type->is_scalar()) {
446 this->type = op0->type;
448 if (this->operation == ir_binop_mul) {
449 this->type = glsl_type::get_mul_type(op0->type, op1->type);
451 assert(op0->type == op1->type);
452 this->type = op0->type;
457 case ir_binop_logic_and:
458 case ir_binop_logic_xor:
459 case ir_binop_logic_or:
460 case ir_binop_bit_and:
461 case ir_binop_bit_xor:
462 case ir_binop_bit_or:
463 assert(!op0->type->is_matrix());
464 assert(!op1->type->is_matrix());
465 if (op0->type->is_scalar()) {
466 this->type = op1->type;
467 } else if (op1->type->is_scalar()) {
468 this->type = op0->type;
470 assert(op0->type->vector_elements == op1->type->vector_elements);
471 this->type = op0->type;
476 case ir_binop_nequal:
477 case ir_binop_lequal:
478 case ir_binop_gequal:
480 case ir_binop_greater:
481 assert(op0->type == op1->type);
482 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL,
483 op0->type->vector_elements, 1);
487 this->type = op0->type->get_base_type();
490 case ir_binop_imul_high:
492 case ir_binop_borrow:
493 case ir_binop_lshift:
494 case ir_binop_rshift:
496 case ir_binop_interpolate_at_offset:
497 case ir_binop_interpolate_at_sample:
498 this->type = op0->type;
501 case ir_binop_vector_extract:
502 this->type = op0->type->get_scalar_type();
506 assert(!"not reached: missing automatic type setup for ir_expression");
507 this->type = glsl_type::float_type;
511 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1,
513 : ir_rvalue(ir_type_expression)
515 this->operation = ir_expression_operation(op);
516 this->operands[0] = op0;
517 this->operands[1] = op1;
518 this->operands[2] = op2;
519 this->operands[3] = NULL;
521 assert(op > ir_last_binop && op <= ir_last_triop);
523 switch (this->operation) {
526 case ir_triop_bitfield_extract:
527 case ir_triop_vector_insert:
528 this->type = op0->type;
532 this->type = op1->type;
536 assert(!"not reached: missing automatic type setup for ir_expression");
537 this->type = glsl_type::float_type;
542 ir_expression::get_num_operands(ir_expression_operation op)
544 assert(op <= ir_last_opcode);
546 if (op <= ir_last_unop)
549 if (op <= ir_last_binop)
552 if (op <= ir_last_triop)
555 if (op <= ir_last_quadop)
562 #include "ir_expression_operation_strings.h"
565 depth_layout_string(ir_depth_layout layout)
568 case ir_depth_layout_none: return "";
569 case ir_depth_layout_any: return "depth_any";
570 case ir_depth_layout_greater: return "depth_greater";
571 case ir_depth_layout_less: return "depth_less";
572 case ir_depth_layout_unchanged: return "depth_unchanged";
580 ir_expression_operation
581 ir_expression::get_operator(const char *str)
583 for (int op = 0; op <= int(ir_last_opcode); op++) {
584 if (strcmp(str, ir_expression_operation_strings[op]) == 0)
585 return (ir_expression_operation) op;
587 return (ir_expression_operation) -1;
591 ir_expression::variable_referenced() const
594 case ir_binop_vector_extract:
595 case ir_triop_vector_insert:
596 /* We get these for things like a[0] where a is a vector type. In these
597 * cases we want variable_referenced() to return the actual vector
598 * variable this is wrapping.
600 return operands[0]->variable_referenced();
602 return ir_rvalue::variable_referenced();
606 ir_constant::ir_constant()
607 : ir_rvalue(ir_type_constant)
609 this->array_elements = NULL;
612 ir_constant::ir_constant(const struct glsl_type *type,
613 const ir_constant_data *data)
614 : ir_rvalue(ir_type_constant)
616 this->array_elements = NULL;
618 assert((type->base_type >= GLSL_TYPE_UINT)
619 && (type->base_type <= GLSL_TYPE_IMAGE));
622 memcpy(& this->value, data, sizeof(this->value));
625 ir_constant::ir_constant(float f, unsigned vector_elements)
626 : ir_rvalue(ir_type_constant)
628 assert(vector_elements <= 4);
629 this->type = glsl_type::get_instance(GLSL_TYPE_FLOAT, vector_elements, 1);
630 for (unsigned i = 0; i < vector_elements; i++) {
631 this->value.f[i] = f;
633 for (unsigned i = vector_elements; i < 16; i++) {
634 this->value.f[i] = 0;
638 ir_constant::ir_constant(double d, unsigned vector_elements)
639 : ir_rvalue(ir_type_constant)
641 assert(vector_elements <= 4);
642 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE, vector_elements, 1);
643 for (unsigned i = 0; i < vector_elements; i++) {
644 this->value.d[i] = d;
646 for (unsigned i = vector_elements; i < 16; i++) {
647 this->value.d[i] = 0.0;
651 ir_constant::ir_constant(unsigned int u, unsigned vector_elements)
652 : ir_rvalue(ir_type_constant)
654 assert(vector_elements <= 4);
655 this->type = glsl_type::get_instance(GLSL_TYPE_UINT, vector_elements, 1);
656 for (unsigned i = 0; i < vector_elements; i++) {
657 this->value.u[i] = u;
659 for (unsigned i = vector_elements; i < 16; i++) {
660 this->value.u[i] = 0;
664 ir_constant::ir_constant(int integer, unsigned vector_elements)
665 : ir_rvalue(ir_type_constant)
667 assert(vector_elements <= 4);
668 this->type = glsl_type::get_instance(GLSL_TYPE_INT, vector_elements, 1);
669 for (unsigned i = 0; i < vector_elements; i++) {
670 this->value.i[i] = integer;
672 for (unsigned i = vector_elements; i < 16; i++) {
673 this->value.i[i] = 0;
677 ir_constant::ir_constant(uint64_t u64, unsigned vector_elements)
678 : ir_rvalue(ir_type_constant)
680 assert(vector_elements <= 4);
681 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64, vector_elements, 1);
682 for (unsigned i = 0; i < vector_elements; i++) {
683 this->value.u64[i] = u64;
685 for (unsigned i = vector_elements; i < 16; i++) {
686 this->value.u64[i] = 0;
690 ir_constant::ir_constant(int64_t int64, unsigned vector_elements)
691 : ir_rvalue(ir_type_constant)
693 assert(vector_elements <= 4);
694 this->type = glsl_type::get_instance(GLSL_TYPE_INT64, vector_elements, 1);
695 for (unsigned i = 0; i < vector_elements; i++) {
696 this->value.i64[i] = int64;
698 for (unsigned i = vector_elements; i < 16; i++) {
699 this->value.i64[i] = 0;
703 ir_constant::ir_constant(bool b, unsigned vector_elements)
704 : ir_rvalue(ir_type_constant)
706 assert(vector_elements <= 4);
707 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL, vector_elements, 1);
708 for (unsigned i = 0; i < vector_elements; i++) {
709 this->value.b[i] = b;
711 for (unsigned i = vector_elements; i < 16; i++) {
712 this->value.b[i] = false;
716 ir_constant::ir_constant(const ir_constant *c, unsigned i)
717 : ir_rvalue(ir_type_constant)
719 this->array_elements = NULL;
720 this->type = c->type->get_base_type();
722 switch (this->type->base_type) {
723 case GLSL_TYPE_UINT: this->value.u[0] = c->value.u[i]; break;
724 case GLSL_TYPE_INT: this->value.i[0] = c->value.i[i]; break;
725 case GLSL_TYPE_FLOAT: this->value.f[0] = c->value.f[i]; break;
726 case GLSL_TYPE_BOOL: this->value.b[0] = c->value.b[i]; break;
727 case GLSL_TYPE_DOUBLE: this->value.d[0] = c->value.d[i]; break;
728 default: assert(!"Should not get here."); break;
732 ir_constant::ir_constant(const struct glsl_type *type, exec_list *value_list)
733 : ir_rvalue(ir_type_constant)
735 this->array_elements = NULL;
738 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
739 || type->is_record() || type->is_array());
741 if (type->is_array()) {
742 this->array_elements = ralloc_array(this, ir_constant *, type->length);
744 foreach_in_list(ir_constant, value, value_list) {
745 assert(value->as_constant() != NULL);
747 this->array_elements[i++] = value;
752 /* If the constant is a record, the types of each of the entries in
753 * value_list must be a 1-for-1 match with the structure components. Each
754 * entry must also be a constant. Just move the nodes from the value_list
755 * to the list in the ir_constant.
757 /* FINISHME: Should there be some type checking and / or assertions here? */
758 /* FINISHME: Should the new constant take ownership of the nodes from
759 * FINISHME: value_list, or should it make copies?
761 if (type->is_record()) {
762 value_list->move_nodes_to(& this->components);
766 for (unsigned i = 0; i < 16; i++) {
767 this->value.u[i] = 0;
770 ir_constant *value = (ir_constant *) (value_list->get_head_raw());
772 /* Constructors with exactly one scalar argument are special for vectors
773 * and matrices. For vectors, the scalar value is replicated to fill all
774 * the components. For matrices, the scalar fills the components of the
775 * diagonal while the rest is filled with 0.
777 if (value->type->is_scalar() && value->next->is_tail_sentinel()) {
778 if (type->is_matrix()) {
779 /* Matrix - fill diagonal (rest is already set to 0) */
780 assert(type->is_float() || type->is_double());
781 for (unsigned i = 0; i < type->matrix_columns; i++) {
782 if (type->is_float())
783 this->value.f[i * type->vector_elements + i] =
786 this->value.d[i * type->vector_elements + i] =
790 /* Vector or scalar - fill all components */
791 switch (type->base_type) {
794 for (unsigned i = 0; i < type->components(); i++)
795 this->value.u[i] = value->value.u[0];
797 case GLSL_TYPE_FLOAT:
798 for (unsigned i = 0; i < type->components(); i++)
799 this->value.f[i] = value->value.f[0];
801 case GLSL_TYPE_DOUBLE:
802 for (unsigned i = 0; i < type->components(); i++)
803 this->value.d[i] = value->value.d[0];
805 case GLSL_TYPE_UINT64:
806 case GLSL_TYPE_INT64:
807 for (unsigned i = 0; i < type->components(); i++)
808 this->value.u64[i] = value->value.u64[0];
811 for (unsigned i = 0; i < type->components(); i++)
812 this->value.b[i] = value->value.b[0];
815 assert(!"Should not get here.");
822 if (type->is_matrix() && value->type->is_matrix()) {
823 assert(value->next->is_tail_sentinel());
825 /* From section 5.4.2 of the GLSL 1.20 spec:
826 * "If a matrix is constructed from a matrix, then each component
827 * (column i, row j) in the result that has a corresponding component
828 * (column i, row j) in the argument will be initialized from there."
830 unsigned cols = MIN2(type->matrix_columns, value->type->matrix_columns);
831 unsigned rows = MIN2(type->vector_elements, value->type->vector_elements);
832 for (unsigned i = 0; i < cols; i++) {
833 for (unsigned j = 0; j < rows; j++) {
834 const unsigned src = i * value->type->vector_elements + j;
835 const unsigned dst = i * type->vector_elements + j;
836 this->value.f[dst] = value->value.f[src];
840 /* "All other components will be initialized to the identity matrix." */
841 for (unsigned i = cols; i < type->matrix_columns; i++)
842 this->value.f[i * type->vector_elements + i] = 1.0;
847 /* Use each component from each entry in the value_list to initialize one
848 * component of the constant being constructed.
852 assert(value->as_constant() != NULL);
853 assert(!value->is_tail_sentinel());
855 for (unsigned j = 0; j < value->type->components(); j++) {
856 switch (type->base_type) {
858 this->value.u[i] = value->get_uint_component(j);
861 this->value.i[i] = value->get_int_component(j);
863 case GLSL_TYPE_FLOAT:
864 this->value.f[i] = value->get_float_component(j);
867 this->value.b[i] = value->get_bool_component(j);
869 case GLSL_TYPE_DOUBLE:
870 this->value.d[i] = value->get_double_component(j);
872 case GLSL_TYPE_UINT64:
873 this->value.u64[i] = value->get_uint64_component(j);
875 case GLSL_TYPE_INT64:
876 this->value.i64[i] = value->get_int64_component(j);
879 /* FINISHME: What to do? Exceptions are not the answer.
885 if (i >= type->components())
889 if (i >= type->components())
890 break; /* avoid downcasting a list sentinel */
891 value = (ir_constant *) value->next;
896 ir_constant::zero(void *mem_ctx, const glsl_type *type)
898 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
899 || type->is_record() || type->is_array());
901 ir_constant *c = new(mem_ctx) ir_constant;
903 memset(&c->value, 0, sizeof(c->value));
905 if (type->is_array()) {
906 c->array_elements = ralloc_array(c, ir_constant *, type->length);
908 for (unsigned i = 0; i < type->length; i++)
909 c->array_elements[i] = ir_constant::zero(c, type->fields.array);
912 if (type->is_record()) {
913 for (unsigned i = 0; i < type->length; i++) {
914 ir_constant *comp = ir_constant::zero(mem_ctx, type->fields.structure[i].type);
915 c->components.push_tail(comp);
923 ir_constant::get_bool_component(unsigned i) const
925 switch (this->type->base_type) {
926 case GLSL_TYPE_UINT: return this->value.u[i] != 0;
927 case GLSL_TYPE_INT: return this->value.i[i] != 0;
928 case GLSL_TYPE_FLOAT: return ((int)this->value.f[i]) != 0;
929 case GLSL_TYPE_BOOL: return this->value.b[i];
930 case GLSL_TYPE_DOUBLE: return this->value.d[i] != 0.0;
931 case GLSL_TYPE_UINT64: return this->value.u64[i] != 0;
932 case GLSL_TYPE_INT64: return this->value.i64[i] != 0;
933 default: assert(!"Should not get here."); break;
936 /* Must return something to make the compiler happy. This is clearly an
943 ir_constant::get_float_component(unsigned i) const
945 switch (this->type->base_type) {
946 case GLSL_TYPE_UINT: return (float) this->value.u[i];
947 case GLSL_TYPE_INT: return (float) this->value.i[i];
948 case GLSL_TYPE_FLOAT: return this->value.f[i];
949 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0f : 0.0f;
950 case GLSL_TYPE_DOUBLE: return (float) this->value.d[i];
951 case GLSL_TYPE_UINT64: return (float) this->value.u64[i];
952 case GLSL_TYPE_INT64: return (float) this->value.i64[i];
953 default: assert(!"Should not get here."); break;
956 /* Must return something to make the compiler happy. This is clearly an
963 ir_constant::get_double_component(unsigned i) const
965 switch (this->type->base_type) {
966 case GLSL_TYPE_UINT: return (double) this->value.u[i];
967 case GLSL_TYPE_INT: return (double) this->value.i[i];
968 case GLSL_TYPE_FLOAT: return (double) this->value.f[i];
969 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0 : 0.0;
970 case GLSL_TYPE_DOUBLE: return this->value.d[i];
971 case GLSL_TYPE_UINT64: return (double) this->value.u64[i];
972 case GLSL_TYPE_INT64: return (double) this->value.i64[i];
973 default: assert(!"Should not get here."); break;
976 /* Must return something to make the compiler happy. This is clearly an
983 ir_constant::get_int_component(unsigned i) const
985 switch (this->type->base_type) {
986 case GLSL_TYPE_UINT: return this->value.u[i];
987 case GLSL_TYPE_INT: return this->value.i[i];
988 case GLSL_TYPE_FLOAT: return (int) this->value.f[i];
989 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
990 case GLSL_TYPE_DOUBLE: return (int) this->value.d[i];
991 case GLSL_TYPE_UINT64: return (int) this->value.u64[i];
992 case GLSL_TYPE_INT64: return (int) this->value.i64[i];
993 default: assert(!"Should not get here."); break;
996 /* Must return something to make the compiler happy. This is clearly an
1003 ir_constant::get_uint_component(unsigned i) const
1005 switch (this->type->base_type) {
1006 case GLSL_TYPE_UINT: return this->value.u[i];
1007 case GLSL_TYPE_INT: return this->value.i[i];
1008 case GLSL_TYPE_FLOAT: return (unsigned) this->value.f[i];
1009 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1010 case GLSL_TYPE_DOUBLE: return (unsigned) this->value.d[i];
1011 case GLSL_TYPE_UINT64: return (unsigned) this->value.u64[i];
1012 case GLSL_TYPE_INT64: return (unsigned) this->value.i64[i];
1013 default: assert(!"Should not get here."); break;
1016 /* Must return something to make the compiler happy. This is clearly an
1023 ir_constant::get_int64_component(unsigned i) const
1025 switch (this->type->base_type) {
1026 case GLSL_TYPE_UINT: return this->value.u[i];
1027 case GLSL_TYPE_INT: return this->value.i[i];
1028 case GLSL_TYPE_FLOAT: return (int64_t) this->value.f[i];
1029 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1030 case GLSL_TYPE_DOUBLE: return (int64_t) this->value.d[i];
1031 case GLSL_TYPE_UINT64: return (int64_t) this->value.u64[i];
1032 case GLSL_TYPE_INT64: return this->value.i64[i];
1033 default: assert(!"Should not get here."); break;
1036 /* Must return something to make the compiler happy. This is clearly an
1043 ir_constant::get_uint64_component(unsigned i) const
1045 switch (this->type->base_type) {
1046 case GLSL_TYPE_UINT: return this->value.u[i];
1047 case GLSL_TYPE_INT: return this->value.i[i];
1048 case GLSL_TYPE_FLOAT: return (uint64_t) this->value.f[i];
1049 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1050 case GLSL_TYPE_DOUBLE: return (uint64_t) this->value.d[i];
1051 case GLSL_TYPE_UINT64: return this->value.u64[i];
1052 case GLSL_TYPE_INT64: return (uint64_t) this->value.i64[i];
1053 default: assert(!"Should not get here."); break;
1056 /* Must return something to make the compiler happy. This is clearly an
1063 ir_constant::get_array_element(unsigned i) const
1065 assert(this->type->is_array());
1067 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1069 * "Behavior is undefined if a shader subscripts an array with an index
1070 * less than 0 or greater than or equal to the size the array was
1073 * Most out-of-bounds accesses are removed before things could get this far.
1074 * There are cases where non-constant array index values can get constant
1079 else if (i >= this->type->length)
1080 i = this->type->length - 1;
1082 return array_elements[i];
1086 ir_constant::get_record_field(const char *name)
1088 int idx = this->type->field_index(name);
1093 if (this->components.is_empty())
1096 exec_node *node = this->components.get_head_raw();
1097 for (int i = 0; i < idx; i++) {
1100 /* If the end of the list is encountered before the element matching the
1101 * requested field is found, return NULL.
1103 if (node->is_tail_sentinel())
1107 return (ir_constant *) node;
1111 ir_constant::copy_offset(ir_constant *src, int offset)
1113 switch (this->type->base_type) {
1114 case GLSL_TYPE_UINT:
1116 case GLSL_TYPE_FLOAT:
1117 case GLSL_TYPE_DOUBLE:
1118 case GLSL_TYPE_UINT64:
1119 case GLSL_TYPE_INT64:
1120 case GLSL_TYPE_BOOL: {
1121 unsigned int size = src->type->components();
1122 assert (size <= this->type->components() - offset);
1123 for (unsigned int i=0; i<size; i++) {
1124 switch (this->type->base_type) {
1125 case GLSL_TYPE_UINT:
1126 value.u[i+offset] = src->get_uint_component(i);
1129 value.i[i+offset] = src->get_int_component(i);
1131 case GLSL_TYPE_FLOAT:
1132 value.f[i+offset] = src->get_float_component(i);
1134 case GLSL_TYPE_BOOL:
1135 value.b[i+offset] = src->get_bool_component(i);
1137 case GLSL_TYPE_DOUBLE:
1138 value.d[i+offset] = src->get_double_component(i);
1140 case GLSL_TYPE_UINT64:
1141 value.u64[i+offset] = src->get_uint64_component(i);
1143 case GLSL_TYPE_INT64:
1144 value.i64[i+offset] = src->get_int64_component(i);
1146 default: // Shut up the compiler
1153 case GLSL_TYPE_STRUCT: {
1154 assert (src->type == this->type);
1155 this->components.make_empty();
1156 foreach_in_list(ir_constant, orig, &src->components) {
1157 this->components.push_tail(orig->clone(this, NULL));
1162 case GLSL_TYPE_ARRAY: {
1163 assert (src->type == this->type);
1164 for (unsigned i = 0; i < this->type->length; i++) {
1165 this->array_elements[i] = src->array_elements[i]->clone(this, NULL);
1171 assert(!"Should not get here.");
1177 ir_constant::copy_masked_offset(ir_constant *src, int offset, unsigned int mask)
1179 assert (!type->is_array() && !type->is_record());
1181 if (!type->is_vector() && !type->is_matrix()) {
1187 for (int i=0; i<4; i++) {
1188 if (mask & (1 << i)) {
1189 switch (this->type->base_type) {
1190 case GLSL_TYPE_UINT:
1191 value.u[i+offset] = src->get_uint_component(id++);
1194 value.i[i+offset] = src->get_int_component(id++);
1196 case GLSL_TYPE_FLOAT:
1197 value.f[i+offset] = src->get_float_component(id++);
1199 case GLSL_TYPE_BOOL:
1200 value.b[i+offset] = src->get_bool_component(id++);
1202 case GLSL_TYPE_DOUBLE:
1203 value.d[i+offset] = src->get_double_component(id++);
1205 case GLSL_TYPE_UINT64:
1206 value.u64[i+offset] = src->get_uint64_component(id++);
1208 case GLSL_TYPE_INT64:
1209 value.i64[i+offset] = src->get_int64_component(id++);
1212 assert(!"Should not get here.");
1220 ir_constant::has_value(const ir_constant *c) const
1222 if (this->type != c->type)
1225 if (this->type->is_array()) {
1226 for (unsigned i = 0; i < this->type->length; i++) {
1227 if (!this->array_elements[i]->has_value(c->array_elements[i]))
1233 if (this->type->is_record()) {
1234 const exec_node *a_node = this->components.get_head_raw();
1235 const exec_node *b_node = c->components.get_head_raw();
1237 while (!a_node->is_tail_sentinel()) {
1238 assert(!b_node->is_tail_sentinel());
1240 const ir_constant *const a_field = (ir_constant *) a_node;
1241 const ir_constant *const b_field = (ir_constant *) b_node;
1243 if (!a_field->has_value(b_field))
1246 a_node = a_node->next;
1247 b_node = b_node->next;
1253 for (unsigned i = 0; i < this->type->components(); i++) {
1254 switch (this->type->base_type) {
1255 case GLSL_TYPE_UINT:
1256 if (this->value.u[i] != c->value.u[i])
1260 if (this->value.i[i] != c->value.i[i])
1263 case GLSL_TYPE_FLOAT:
1264 if (this->value.f[i] != c->value.f[i])
1267 case GLSL_TYPE_BOOL:
1268 if (this->value.b[i] != c->value.b[i])
1271 case GLSL_TYPE_DOUBLE:
1272 if (this->value.d[i] != c->value.d[i])
1275 case GLSL_TYPE_UINT64:
1276 if (this->value.u64[i] != c->value.u64[i])
1279 case GLSL_TYPE_INT64:
1280 if (this->value.i64[i] != c->value.i64[i])
1284 assert(!"Should not get here.");
1293 ir_constant::is_value(float f, int i) const
1295 if (!this->type->is_scalar() && !this->type->is_vector())
1298 /* Only accept boolean values for 0/1. */
1299 if (int(bool(i)) != i && this->type->is_boolean())
1302 for (unsigned c = 0; c < this->type->vector_elements; c++) {
1303 switch (this->type->base_type) {
1304 case GLSL_TYPE_FLOAT:
1305 if (this->value.f[c] != f)
1309 if (this->value.i[c] != i)
1312 case GLSL_TYPE_UINT:
1313 if (this->value.u[c] != unsigned(i))
1316 case GLSL_TYPE_BOOL:
1317 if (this->value.b[c] != bool(i))
1320 case GLSL_TYPE_DOUBLE:
1321 if (this->value.d[c] != double(f))
1324 case GLSL_TYPE_UINT64:
1325 if (this->value.u64[c] != uint64_t(i))
1328 case GLSL_TYPE_INT64:
1329 if (this->value.i64[c] != i)
1333 /* The only other base types are structures, arrays, and samplers.
1334 * Samplers cannot be constants, and the others should have been
1335 * filtered out above.
1337 assert(!"Should not get here.");
1346 ir_constant::is_zero() const
1348 return is_value(0.0, 0);
1352 ir_constant::is_one() const
1354 return is_value(1.0, 1);
1358 ir_constant::is_negative_one() const
1360 return is_value(-1.0, -1);
1364 ir_constant::is_uint16_constant() const
1366 if (!type->is_integer())
1369 return value.u[0] < (1 << 16);
1373 : ir_instruction(ir_type_loop)
1378 ir_dereference_variable::ir_dereference_variable(ir_variable *var)
1379 : ir_dereference(ir_type_dereference_variable)
1381 assert(var != NULL);
1384 this->type = var->type;
1388 ir_dereference_array::ir_dereference_array(ir_rvalue *value,
1389 ir_rvalue *array_index)
1390 : ir_dereference(ir_type_dereference_array)
1392 this->array_index = array_index;
1393 this->set_array(value);
1397 ir_dereference_array::ir_dereference_array(ir_variable *var,
1398 ir_rvalue *array_index)
1399 : ir_dereference(ir_type_dereference_array)
1401 void *ctx = ralloc_parent(var);
1403 this->array_index = array_index;
1404 this->set_array(new(ctx) ir_dereference_variable(var));
1409 ir_dereference_array::set_array(ir_rvalue *value)
1411 assert(value != NULL);
1413 this->array = value;
1415 const glsl_type *const vt = this->array->type;
1417 if (vt->is_array()) {
1418 type = vt->fields.array;
1419 } else if (vt->is_matrix()) {
1420 type = vt->column_type();
1421 } else if (vt->is_vector()) {
1422 type = vt->get_base_type();
1427 ir_dereference_record::ir_dereference_record(ir_rvalue *value,
1429 : ir_dereference(ir_type_dereference_record)
1431 assert(value != NULL);
1433 this->record = value;
1434 this->field = ralloc_strdup(this, field);
1435 this->type = this->record->type->field_type(field);
1439 ir_dereference_record::ir_dereference_record(ir_variable *var,
1441 : ir_dereference(ir_type_dereference_record)
1443 void *ctx = ralloc_parent(var);
1445 this->record = new(ctx) ir_dereference_variable(var);
1446 this->field = ralloc_strdup(this, field);
1447 this->type = this->record->type->field_type(field);
1451 ir_dereference::is_lvalue(const struct _mesa_glsl_parse_state *state) const
1453 ir_variable *var = this->variable_referenced();
1455 /* Every l-value derference chain eventually ends in a variable.
1457 if ((var == NULL) || var->data.read_only)
1460 /* From section 4.1.7 of the ARB_bindless_texture spec:
1462 * "Samplers can be used as l-values, so can be assigned into and used as
1463 * "out" and "inout" function parameters."
1465 * From section 4.1.X of the ARB_bindless_texture spec:
1467 * "Images can be used as l-values, so can be assigned into and used as
1468 * "out" and "inout" function parameters."
1470 if ((!state || state->has_bindless()) &&
1471 (this->type->contains_sampler() || this->type->contains_image()))
1474 /* From section 4.1.7 of the GLSL 4.40 spec:
1476 * "Opaque variables cannot be treated as l-values; hence cannot
1477 * be used as out or inout function parameters, nor can they be
1480 if (this->type->contains_opaque())
1487 static const char * const tex_opcode_strs[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1489 const char *ir_texture::opcode_string()
1491 assert((unsigned int) op < ARRAY_SIZE(tex_opcode_strs));
1492 return tex_opcode_strs[op];
1496 ir_texture::get_opcode(const char *str)
1498 const int count = sizeof(tex_opcode_strs) / sizeof(tex_opcode_strs[0]);
1499 for (int op = 0; op < count; op++) {
1500 if (strcmp(str, tex_opcode_strs[op]) == 0)
1501 return (ir_texture_opcode) op;
1503 return (ir_texture_opcode) -1;
1508 ir_texture::set_sampler(ir_dereference *sampler, const glsl_type *type)
1510 assert(sampler != NULL);
1511 assert(type != NULL);
1512 this->sampler = sampler;
1515 if (this->op == ir_txs || this->op == ir_query_levels ||
1516 this->op == ir_texture_samples) {
1517 assert(type->base_type == GLSL_TYPE_INT);
1518 } else if (this->op == ir_lod) {
1519 assert(type->vector_elements == 2);
1520 assert(type->is_float());
1521 } else if (this->op == ir_samples_identical) {
1522 assert(type == glsl_type::bool_type);
1523 assert(sampler->type->is_sampler());
1524 assert(sampler->type->sampler_dimensionality == GLSL_SAMPLER_DIM_MS);
1526 assert(sampler->type->sampled_type == (int) type->base_type);
1527 if (sampler->type->sampler_shadow)
1528 assert(type->vector_elements == 4 || type->vector_elements == 1);
1530 assert(type->vector_elements == 4);
1536 ir_swizzle::init_mask(const unsigned *comp, unsigned count)
1538 assert((count >= 1) && (count <= 4));
1540 memset(&this->mask, 0, sizeof(this->mask));
1541 this->mask.num_components = count;
1543 unsigned dup_mask = 0;
1546 assert(comp[3] <= 3);
1547 dup_mask |= (1U << comp[3])
1548 & ((1U << comp[0]) | (1U << comp[1]) | (1U << comp[2]));
1549 this->mask.w = comp[3];
1552 assert(comp[2] <= 3);
1553 dup_mask |= (1U << comp[2])
1554 & ((1U << comp[0]) | (1U << comp[1]));
1555 this->mask.z = comp[2];
1558 assert(comp[1] <= 3);
1559 dup_mask |= (1U << comp[1])
1560 & ((1U << comp[0]));
1561 this->mask.y = comp[1];
1564 assert(comp[0] <= 3);
1565 this->mask.x = comp[0];
1568 this->mask.has_duplicates = dup_mask != 0;
1570 /* Based on the number of elements in the swizzle and the base type
1571 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1572 * generate the type of the resulting value.
1574 type = glsl_type::get_instance(val->type->base_type, mask.num_components, 1);
1577 ir_swizzle::ir_swizzle(ir_rvalue *val, unsigned x, unsigned y, unsigned z,
1578 unsigned w, unsigned count)
1579 : ir_rvalue(ir_type_swizzle), val(val)
1581 const unsigned components[4] = { x, y, z, w };
1582 this->init_mask(components, count);
1585 ir_swizzle::ir_swizzle(ir_rvalue *val, const unsigned *comp,
1587 : ir_rvalue(ir_type_swizzle), val(val)
1589 this->init_mask(comp, count);
1592 ir_swizzle::ir_swizzle(ir_rvalue *val, ir_swizzle_mask mask)
1593 : ir_rvalue(ir_type_swizzle), val(val), mask(mask)
1595 this->type = glsl_type::get_instance(val->type->base_type,
1596 mask.num_components, 1);
1605 ir_swizzle::create(ir_rvalue *val, const char *str, unsigned vector_length)
1607 void *ctx = ralloc_parent(val);
1609 /* For each possible swizzle character, this table encodes the value in
1610 * \c idx_map that represents the 0th element of the vector. For invalid
1611 * swizzle characters (e.g., 'k'), a special value is used that will allow
1612 * detection of errors.
1614 static const unsigned char base_idx[26] = {
1615 /* a b c d e f g h i j k l m */
1616 R, R, I, I, I, I, R, I, I, I, I, I, I,
1617 /* n o p q r s t u v w x y z */
1618 I, I, S, S, R, S, S, I, I, X, X, X, X
1621 /* Each valid swizzle character has an entry in the previous table. This
1622 * table encodes the base index encoded in the previous table plus the actual
1623 * index of the swizzle character. When processing swizzles, the first
1624 * character in the string is indexed in the previous table. Each character
1625 * in the string is indexed in this table, and the value found there has the
1626 * value form the first table subtracted. The result must be on the range
1629 * For example, the string "wzyx" will get X from the first table. Each of
1630 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1631 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1633 * The string "wzrg" will get X from the first table. Each of the characters
1634 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1635 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1636 * [0,3], the error is detected.
1638 static const unsigned char idx_map[26] = {
1639 /* a b c d e f g h i j k l m */
1640 R+3, R+2, 0, 0, 0, 0, R+1, 0, 0, 0, 0, 0, 0,
1641 /* n o p q r s t u v w x y z */
1642 0, 0, S+2, S+3, R+0, S+0, S+1, 0, 0, X+3, X+0, X+1, X+2
1645 int swiz_idx[4] = { 0, 0, 0, 0 };
1649 /* Validate the first character in the swizzle string and look up the base
1650 * index value as described above.
1652 if ((str[0] < 'a') || (str[0] > 'z'))
1655 const unsigned base = base_idx[str[0] - 'a'];
1658 for (i = 0; (i < 4) && (str[i] != '\0'); i++) {
1659 /* Validate the next character, and, as described above, convert it to a
1662 if ((str[i] < 'a') || (str[i] > 'z'))
1665 swiz_idx[i] = idx_map[str[i] - 'a'] - base;
1666 if ((swiz_idx[i] < 0) || (swiz_idx[i] >= (int) vector_length))
1673 return new(ctx) ir_swizzle(val, swiz_idx[0], swiz_idx[1], swiz_idx[2],
1683 ir_swizzle::variable_referenced() const
1685 return this->val->variable_referenced();
1689 bool ir_variable::temporaries_allocate_names = false;
1691 const char ir_variable::tmp_name[] = "compiler_temp";
1693 ir_variable::ir_variable(const struct glsl_type *type, const char *name,
1694 ir_variable_mode mode)
1695 : ir_instruction(ir_type_variable)
1699 if (mode == ir_var_temporary && !ir_variable::temporaries_allocate_names)
1702 /* The ir_variable clone method may call this constructor with name set to
1706 || mode == ir_var_temporary
1707 || mode == ir_var_function_in
1708 || mode == ir_var_function_out
1709 || mode == ir_var_function_inout);
1710 assert(name != ir_variable::tmp_name
1711 || mode == ir_var_temporary);
1712 if (mode == ir_var_temporary
1713 && (name == NULL || name == ir_variable::tmp_name)) {
1714 this->name = ir_variable::tmp_name;
1715 } else if (name == NULL ||
1716 strlen(name) < ARRAY_SIZE(this->name_storage)) {
1717 strcpy(this->name_storage, name ? name : "");
1718 this->name = this->name_storage;
1720 this->name = ralloc_strdup(this, name);
1723 this->u.max_ifc_array_access = NULL;
1725 this->data.explicit_location = false;
1726 this->data.has_initializer = false;
1727 this->data.location = -1;
1728 this->data.location_frac = 0;
1729 this->data.binding = 0;
1730 this->data.warn_extension_index = 0;
1731 this->constant_value = NULL;
1732 this->constant_initializer = NULL;
1733 this->data.origin_upper_left = false;
1734 this->data.pixel_center_integer = false;
1735 this->data.depth_layout = ir_depth_layout_none;
1736 this->data.used = false;
1737 this->data.always_active_io = false;
1738 this->data.read_only = false;
1739 this->data.centroid = false;
1740 this->data.sample = false;
1741 this->data.patch = false;
1742 this->data.invariant = false;
1743 this->data.how_declared = ir_var_declared_normally;
1744 this->data.mode = mode;
1745 this->data.interpolation = INTERP_MODE_NONE;
1746 this->data.max_array_access = -1;
1747 this->data.offset = 0;
1748 this->data.precision = GLSL_PRECISION_NONE;
1749 this->data.memory_read_only = false;
1750 this->data.memory_write_only = false;
1751 this->data.memory_coherent = false;
1752 this->data.memory_volatile = false;
1753 this->data.memory_restrict = false;
1754 this->data.from_ssbo_unsized_array = false;
1755 this->data.fb_fetch_output = false;
1756 this->data.bindless = false;
1757 this->data.bound = false;
1760 if (type->is_interface())
1761 this->init_interface_type(type);
1762 else if (type->without_array()->is_interface())
1763 this->init_interface_type(type->without_array());
1769 interpolation_string(unsigned interpolation)
1771 switch (interpolation) {
1772 case INTERP_MODE_NONE: return "no";
1773 case INTERP_MODE_SMOOTH: return "smooth";
1774 case INTERP_MODE_FLAT: return "flat";
1775 case INTERP_MODE_NOPERSPECTIVE: return "noperspective";
1778 assert(!"Should not get here.");
1782 const char *const ir_variable::warn_extension_table[] = {
1784 "GL_ARB_shader_stencil_export",
1785 "GL_AMD_shader_stencil_export",
1789 ir_variable::enable_extension_warning(const char *extension)
1791 for (unsigned i = 0; i < ARRAY_SIZE(warn_extension_table); i++) {
1792 if (strcmp(warn_extension_table[i], extension) == 0) {
1793 this->data.warn_extension_index = i;
1798 assert(!"Should not get here.");
1799 this->data.warn_extension_index = 0;
1803 ir_variable::get_extension_warning() const
1805 return this->data.warn_extension_index == 0
1806 ? NULL : warn_extension_table[this->data.warn_extension_index];
1809 ir_function_signature::ir_function_signature(const glsl_type *return_type,
1810 builtin_available_predicate b)
1811 : ir_instruction(ir_type_function_signature),
1812 return_type(return_type), is_defined(false),
1813 intrinsic_id(ir_intrinsic_invalid), builtin_avail(b), _function(NULL)
1815 this->origin = NULL;
1820 ir_function_signature::is_builtin() const
1822 return builtin_avail != NULL;
1827 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state *state) const
1829 /* We can't call the predicate without a state pointer, so just say that
1830 * the signature is available. At compile time, we need the filtering,
1831 * but also receive a valid state pointer. At link time, we're resolving
1832 * imported built-in prototypes to their definitions, which will always
1833 * be an exact match. So we can skip the filtering.
1838 assert(builtin_avail != NULL);
1839 return builtin_avail(state);
1844 modes_match(unsigned a, unsigned b)
1849 /* Accept "in" vs. "const in" */
1850 if ((a == ir_var_const_in && b == ir_var_function_in) ||
1851 (b == ir_var_const_in && a == ir_var_function_in))
1859 ir_function_signature::qualifiers_match(exec_list *params)
1861 /* check that the qualifiers match. */
1862 foreach_two_lists(a_node, &this->parameters, b_node, params) {
1863 ir_variable *a = (ir_variable *) a_node;
1864 ir_variable *b = (ir_variable *) b_node;
1866 if (a->data.read_only != b->data.read_only ||
1867 !modes_match(a->data.mode, b->data.mode) ||
1868 a->data.interpolation != b->data.interpolation ||
1869 a->data.centroid != b->data.centroid ||
1870 a->data.sample != b->data.sample ||
1871 a->data.patch != b->data.patch ||
1872 a->data.memory_read_only != b->data.memory_read_only ||
1873 a->data.memory_write_only != b->data.memory_write_only ||
1874 a->data.memory_coherent != b->data.memory_coherent ||
1875 a->data.memory_volatile != b->data.memory_volatile ||
1876 a->data.memory_restrict != b->data.memory_restrict) {
1878 /* parameter a's qualifiers don't match */
1887 ir_function_signature::replace_parameters(exec_list *new_params)
1889 /* Destroy all of the previous parameter information. If the previous
1890 * parameter information comes from the function prototype, it may either
1891 * specify incorrect parameter names or not have names at all.
1893 new_params->move_nodes_to(¶meters);
1897 ir_function::ir_function(const char *name)
1898 : ir_instruction(ir_type_function)
1900 this->subroutine_index = -1;
1901 this->name = ralloc_strdup(this, name);
1906 ir_function::has_user_signature()
1908 foreach_in_list(ir_function_signature, sig, &this->signatures) {
1909 if (!sig->is_builtin())
1917 ir_rvalue::error_value(void *mem_ctx)
1919 ir_rvalue *v = new(mem_ctx) ir_rvalue(ir_type_unset);
1921 v->type = glsl_type::error_type;
1927 visit_exec_list(exec_list *list, ir_visitor *visitor)
1929 foreach_in_list_safe(ir_instruction, node, list) {
1930 node->accept(visitor);
1936 steal_memory(ir_instruction *ir, void *new_ctx)
1938 ir_variable *var = ir->as_variable();
1939 ir_function *fn = ir->as_function();
1940 ir_constant *constant = ir->as_constant();
1941 if (var != NULL && var->constant_value != NULL)
1942 steal_memory(var->constant_value, ir);
1944 if (var != NULL && var->constant_initializer != NULL)
1945 steal_memory(var->constant_initializer, ir);
1947 if (fn != NULL && fn->subroutine_types)
1948 ralloc_steal(new_ctx, fn->subroutine_types);
1950 /* The components of aggregate constants are not visited by the normal
1951 * visitor, so steal their values by hand.
1953 if (constant != NULL) {
1954 if (constant->type->is_record()) {
1955 foreach_in_list(ir_constant, field, &constant->components) {
1956 steal_memory(field, ir);
1958 } else if (constant->type->is_array()) {
1959 for (unsigned int i = 0; i < constant->type->length; i++) {
1960 steal_memory(constant->array_elements[i], ir);
1965 ralloc_steal(new_ctx, ir);
1970 reparent_ir(exec_list *list, void *mem_ctx)
1972 foreach_in_list(ir_instruction, node, list) {
1973 visit_tree(node, steal_memory, mem_ctx);
1979 try_min_one(ir_rvalue *ir)
1981 ir_expression *expr = ir->as_expression();
1983 if (!expr || expr->operation != ir_binop_min)
1986 if (expr->operands[0]->is_one())
1987 return expr->operands[1];
1989 if (expr->operands[1]->is_one())
1990 return expr->operands[0];
1996 try_max_zero(ir_rvalue *ir)
1998 ir_expression *expr = ir->as_expression();
2000 if (!expr || expr->operation != ir_binop_max)
2003 if (expr->operands[0]->is_zero())
2004 return expr->operands[1];
2006 if (expr->operands[1]->is_zero())
2007 return expr->operands[0];
2013 ir_rvalue::as_rvalue_to_saturate()
2015 ir_expression *expr = this->as_expression();
2020 ir_rvalue *max_zero = try_max_zero(expr);
2022 return try_min_one(max_zero);
2024 ir_rvalue *min_one = try_min_one(expr);
2026 return try_max_zero(min_one);
2035 vertices_per_prim(GLenum prim)
2044 case GL_LINES_ADJACENCY:
2046 case GL_TRIANGLES_ADJACENCY:
2049 assert(!"Bad primitive");
2055 * Generate a string describing the mode of a variable
2058 mode_string(const ir_variable *var)
2060 switch (var->data.mode) {
2062 return (var->data.read_only) ? "global constant" : "global variable";
2064 case ir_var_uniform:
2067 case ir_var_shader_storage:
2070 case ir_var_shader_in:
2071 return "shader input";
2073 case ir_var_shader_out:
2074 return "shader output";
2076 case ir_var_function_in:
2077 case ir_var_const_in:
2078 return "function input";
2080 case ir_var_function_out:
2081 return "function output";
2083 case ir_var_function_inout:
2084 return "function inout";
2086 case ir_var_system_value:
2087 return "shader input";
2089 case ir_var_temporary:
2090 return "compiler temporary";
2092 case ir_var_mode_count:
2096 assert(!"Should not get here.");
2097 return "invalid variable";