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16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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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;
209 for (unsigned i = num_operands; i < 4; i++) {
210 assert(this->operands[i] == NULL);
213 for (unsigned i = 0; i < num_operands; i++) {
214 assert(this->operands[i] != NULL);
219 ir_expression::ir_expression(int op, ir_rvalue *op0)
220 : ir_rvalue(ir_type_expression)
222 this->operation = ir_expression_operation(op);
223 this->operands[0] = op0;
224 this->operands[1] = NULL;
225 this->operands[2] = NULL;
226 this->operands[3] = NULL;
228 assert(op <= ir_last_unop);
230 assert(num_operands == 1);
231 assert(this->operands[0]);
233 switch (this->operation) {
234 case ir_unop_bit_not:
235 case ir_unop_logic_not:
250 case ir_unop_round_even:
254 case ir_unop_dFdx_coarse:
255 case ir_unop_dFdx_fine:
257 case ir_unop_dFdy_coarse:
258 case ir_unop_dFdy_fine:
259 case ir_unop_bitfield_reverse:
260 case ir_unop_interpolate_at_centroid:
261 case ir_unop_saturate:
262 this->type = op0->type;
269 case ir_unop_bitcast_f2i:
270 case ir_unop_bit_count:
271 case ir_unop_find_msb:
272 case ir_unop_find_lsb:
273 case ir_unop_subroutine_to_int:
276 this->type = glsl_type::get_instance(GLSL_TYPE_INT,
277 op0->type->vector_elements, 1);
284 case ir_unop_bitcast_i2f:
285 case ir_unop_bitcast_u2f:
288 this->type = glsl_type::get_instance(GLSL_TYPE_FLOAT,
289 op0->type->vector_elements, 1);
296 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL,
297 op0->type->vector_elements, 1);
305 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE,
306 op0->type->vector_elements, 1);
312 case ir_unop_bitcast_f2u:
315 this->type = glsl_type::get_instance(GLSL_TYPE_UINT,
316 op0->type->vector_elements, 1);
324 case ir_unop_u642i64:
325 this->type = glsl_type::get_instance(GLSL_TYPE_INT64,
326 op0->type->vector_elements, 1);
333 case ir_unop_i642u64:
334 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64,
335 op0->type->vector_elements, 1);
338 this->type = glsl_type::float_type;
341 case ir_unop_unpack_double_2x32:
342 case ir_unop_unpack_uint_2x32:
343 this->type = glsl_type::uvec2_type;
346 case ir_unop_unpack_int_2x32:
347 this->type = glsl_type::ivec2_type;
350 case ir_unop_pack_snorm_2x16:
351 case ir_unop_pack_snorm_4x8:
352 case ir_unop_pack_unorm_2x16:
353 case ir_unop_pack_unorm_4x8:
354 case ir_unop_pack_half_2x16:
355 this->type = glsl_type::uint_type;
358 case ir_unop_pack_double_2x32:
359 this->type = glsl_type::double_type;
362 case ir_unop_pack_int_2x32:
363 this->type = glsl_type::int64_t_type;
366 case ir_unop_pack_uint_2x32:
367 this->type = glsl_type::uint64_t_type;
370 case ir_unop_unpack_snorm_2x16:
371 case ir_unop_unpack_unorm_2x16:
372 case ir_unop_unpack_half_2x16:
373 this->type = glsl_type::vec2_type;
376 case ir_unop_unpack_snorm_4x8:
377 case ir_unop_unpack_unorm_4x8:
378 this->type = glsl_type::vec4_type;
381 case ir_unop_unpack_sampler_2x32:
382 case ir_unop_unpack_image_2x32:
383 this->type = glsl_type::uvec2_type;
386 case ir_unop_pack_sampler_2x32:
387 case ir_unop_pack_image_2x32:
388 this->type = op0->type;
391 case ir_unop_frexp_sig:
392 this->type = op0->type;
394 case ir_unop_frexp_exp:
395 this->type = glsl_type::get_instance(GLSL_TYPE_INT,
396 op0->type->vector_elements, 1);
399 case ir_unop_get_buffer_size:
400 case ir_unop_ssbo_unsized_array_length:
401 this->type = glsl_type::int_type;
404 case ir_unop_bitcast_i642d:
405 case ir_unop_bitcast_u642d:
406 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE,
407 op0->type->vector_elements, 1);
410 case ir_unop_bitcast_d2i64:
411 this->type = glsl_type::get_instance(GLSL_TYPE_INT64,
412 op0->type->vector_elements, 1);
414 case ir_unop_bitcast_d2u64:
415 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64,
416 op0->type->vector_elements, 1);
420 assert(!"not reached: missing automatic type setup for ir_expression");
421 this->type = op0->type;
426 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1)
427 : ir_rvalue(ir_type_expression)
429 this->operation = ir_expression_operation(op);
430 this->operands[0] = op0;
431 this->operands[1] = op1;
432 this->operands[2] = NULL;
433 this->operands[3] = NULL;
435 assert(op > ir_last_unop);
437 assert(num_operands == 2);
438 for (unsigned i = 0; i < num_operands; i++) {
439 assert(this->operands[i] != NULL);
442 switch (this->operation) {
443 case ir_binop_all_equal:
444 case ir_binop_any_nequal:
445 this->type = glsl_type::bool_type;
456 if (op0->type->is_scalar()) {
457 this->type = op1->type;
458 } else if (op1->type->is_scalar()) {
459 this->type = op0->type;
461 if (this->operation == ir_binop_mul) {
462 this->type = glsl_type::get_mul_type(op0->type, op1->type);
464 assert(op0->type == op1->type);
465 this->type = op0->type;
470 case ir_binop_logic_and:
471 case ir_binop_logic_xor:
472 case ir_binop_logic_or:
473 case ir_binop_bit_and:
474 case ir_binop_bit_xor:
475 case ir_binop_bit_or:
476 assert(!op0->type->is_matrix());
477 assert(!op1->type->is_matrix());
478 if (op0->type->is_scalar()) {
479 this->type = op1->type;
480 } else if (op1->type->is_scalar()) {
481 this->type = op0->type;
483 assert(op0->type->vector_elements == op1->type->vector_elements);
484 this->type = op0->type;
489 case ir_binop_nequal:
490 case ir_binop_lequal:
491 case ir_binop_gequal:
493 case ir_binop_greater:
494 assert(op0->type == op1->type);
495 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL,
496 op0->type->vector_elements, 1);
500 this->type = op0->type->get_base_type();
503 case ir_binop_imul_high:
505 case ir_binop_borrow:
506 case ir_binop_lshift:
507 case ir_binop_rshift:
509 case ir_binop_interpolate_at_offset:
510 case ir_binop_interpolate_at_sample:
511 this->type = op0->type;
514 case ir_binop_vector_extract:
515 this->type = op0->type->get_scalar_type();
519 assert(!"not reached: missing automatic type setup for ir_expression");
520 this->type = glsl_type::float_type;
524 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1,
526 : ir_rvalue(ir_type_expression)
528 this->operation = ir_expression_operation(op);
529 this->operands[0] = op0;
530 this->operands[1] = op1;
531 this->operands[2] = op2;
532 this->operands[3] = NULL;
534 assert(op > ir_last_binop && op <= ir_last_triop);
536 assert(num_operands == 3);
537 for (unsigned i = 0; i < num_operands; i++) {
538 assert(this->operands[i] != NULL);
541 switch (this->operation) {
544 case ir_triop_bitfield_extract:
545 case ir_triop_vector_insert:
546 this->type = op0->type;
550 this->type = op1->type;
554 assert(!"not reached: missing automatic type setup for ir_expression");
555 this->type = glsl_type::float_type;
560 ir_expression::get_num_operands(ir_expression_operation op)
562 assert(op <= ir_last_opcode);
564 if (op <= ir_last_unop)
567 if (op <= ir_last_binop)
570 if (op <= ir_last_triop)
573 if (op <= ir_last_quadop)
580 #include "ir_expression_operation_strings.h"
583 depth_layout_string(ir_depth_layout layout)
586 case ir_depth_layout_none: return "";
587 case ir_depth_layout_any: return "depth_any";
588 case ir_depth_layout_greater: return "depth_greater";
589 case ir_depth_layout_less: return "depth_less";
590 case ir_depth_layout_unchanged: return "depth_unchanged";
598 ir_expression_operation
599 ir_expression::get_operator(const char *str)
601 for (int op = 0; op <= int(ir_last_opcode); op++) {
602 if (strcmp(str, ir_expression_operation_strings[op]) == 0)
603 return (ir_expression_operation) op;
605 return (ir_expression_operation) -1;
609 ir_expression::variable_referenced() const
612 case ir_binop_vector_extract:
613 case ir_triop_vector_insert:
614 /* We get these for things like a[0] where a is a vector type. In these
615 * cases we want variable_referenced() to return the actual vector
616 * variable this is wrapping.
618 return operands[0]->variable_referenced();
620 return ir_rvalue::variable_referenced();
624 ir_constant::ir_constant()
625 : ir_rvalue(ir_type_constant)
627 this->array_elements = NULL;
630 ir_constant::ir_constant(const struct glsl_type *type,
631 const ir_constant_data *data)
632 : ir_rvalue(ir_type_constant)
634 this->array_elements = NULL;
636 assert((type->base_type >= GLSL_TYPE_UINT)
637 && (type->base_type <= GLSL_TYPE_IMAGE));
640 memcpy(& this->value, data, sizeof(this->value));
643 ir_constant::ir_constant(float f, unsigned vector_elements)
644 : ir_rvalue(ir_type_constant)
646 assert(vector_elements <= 4);
647 this->type = glsl_type::get_instance(GLSL_TYPE_FLOAT, vector_elements, 1);
648 for (unsigned i = 0; i < vector_elements; i++) {
649 this->value.f[i] = f;
651 for (unsigned i = vector_elements; i < 16; i++) {
652 this->value.f[i] = 0;
656 ir_constant::ir_constant(double d, unsigned vector_elements)
657 : ir_rvalue(ir_type_constant)
659 assert(vector_elements <= 4);
660 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE, vector_elements, 1);
661 for (unsigned i = 0; i < vector_elements; i++) {
662 this->value.d[i] = d;
664 for (unsigned i = vector_elements; i < 16; i++) {
665 this->value.d[i] = 0.0;
669 ir_constant::ir_constant(unsigned int u, unsigned vector_elements)
670 : ir_rvalue(ir_type_constant)
672 assert(vector_elements <= 4);
673 this->type = glsl_type::get_instance(GLSL_TYPE_UINT, vector_elements, 1);
674 for (unsigned i = 0; i < vector_elements; i++) {
675 this->value.u[i] = u;
677 for (unsigned i = vector_elements; i < 16; i++) {
678 this->value.u[i] = 0;
682 ir_constant::ir_constant(int integer, unsigned vector_elements)
683 : ir_rvalue(ir_type_constant)
685 assert(vector_elements <= 4);
686 this->type = glsl_type::get_instance(GLSL_TYPE_INT, vector_elements, 1);
687 for (unsigned i = 0; i < vector_elements; i++) {
688 this->value.i[i] = integer;
690 for (unsigned i = vector_elements; i < 16; i++) {
691 this->value.i[i] = 0;
695 ir_constant::ir_constant(uint64_t u64, unsigned vector_elements)
696 : ir_rvalue(ir_type_constant)
698 assert(vector_elements <= 4);
699 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64, vector_elements, 1);
700 for (unsigned i = 0; i < vector_elements; i++) {
701 this->value.u64[i] = u64;
703 for (unsigned i = vector_elements; i < 16; i++) {
704 this->value.u64[i] = 0;
708 ir_constant::ir_constant(int64_t int64, unsigned vector_elements)
709 : ir_rvalue(ir_type_constant)
711 assert(vector_elements <= 4);
712 this->type = glsl_type::get_instance(GLSL_TYPE_INT64, vector_elements, 1);
713 for (unsigned i = 0; i < vector_elements; i++) {
714 this->value.i64[i] = int64;
716 for (unsigned i = vector_elements; i < 16; i++) {
717 this->value.i64[i] = 0;
721 ir_constant::ir_constant(bool b, unsigned vector_elements)
722 : ir_rvalue(ir_type_constant)
724 assert(vector_elements <= 4);
725 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL, vector_elements, 1);
726 for (unsigned i = 0; i < vector_elements; i++) {
727 this->value.b[i] = b;
729 for (unsigned i = vector_elements; i < 16; i++) {
730 this->value.b[i] = false;
734 ir_constant::ir_constant(const ir_constant *c, unsigned i)
735 : ir_rvalue(ir_type_constant)
737 this->array_elements = NULL;
738 this->type = c->type->get_base_type();
740 switch (this->type->base_type) {
741 case GLSL_TYPE_UINT: this->value.u[0] = c->value.u[i]; break;
742 case GLSL_TYPE_INT: this->value.i[0] = c->value.i[i]; break;
743 case GLSL_TYPE_FLOAT: this->value.f[0] = c->value.f[i]; break;
744 case GLSL_TYPE_BOOL: this->value.b[0] = c->value.b[i]; break;
745 case GLSL_TYPE_DOUBLE: this->value.d[0] = c->value.d[i]; break;
746 default: assert(!"Should not get here."); break;
750 ir_constant::ir_constant(const struct glsl_type *type, exec_list *value_list)
751 : ir_rvalue(ir_type_constant)
753 this->array_elements = NULL;
756 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
757 || type->is_record() || type->is_array());
759 if (type->is_array()) {
760 this->array_elements = ralloc_array(this, ir_constant *, type->length);
762 foreach_in_list(ir_constant, value, value_list) {
763 assert(value->as_constant() != NULL);
765 this->array_elements[i++] = value;
770 /* If the constant is a record, the types of each of the entries in
771 * value_list must be a 1-for-1 match with the structure components. Each
772 * entry must also be a constant. Just move the nodes from the value_list
773 * to the list in the ir_constant.
775 /* FINISHME: Should there be some type checking and / or assertions here? */
776 /* FINISHME: Should the new constant take ownership of the nodes from
777 * FINISHME: value_list, or should it make copies?
779 if (type->is_record()) {
780 value_list->move_nodes_to(& this->components);
784 for (unsigned i = 0; i < 16; i++) {
785 this->value.u[i] = 0;
788 ir_constant *value = (ir_constant *) (value_list->get_head_raw());
790 /* Constructors with exactly one scalar argument are special for vectors
791 * and matrices. For vectors, the scalar value is replicated to fill all
792 * the components. For matrices, the scalar fills the components of the
793 * diagonal while the rest is filled with 0.
795 if (value->type->is_scalar() && value->next->is_tail_sentinel()) {
796 if (type->is_matrix()) {
797 /* Matrix - fill diagonal (rest is already set to 0) */
798 assert(type->is_float() || type->is_double());
799 for (unsigned i = 0; i < type->matrix_columns; i++) {
800 if (type->is_float())
801 this->value.f[i * type->vector_elements + i] =
804 this->value.d[i * type->vector_elements + i] =
808 /* Vector or scalar - fill all components */
809 switch (type->base_type) {
812 for (unsigned i = 0; i < type->components(); i++)
813 this->value.u[i] = value->value.u[0];
815 case GLSL_TYPE_FLOAT:
816 for (unsigned i = 0; i < type->components(); i++)
817 this->value.f[i] = value->value.f[0];
819 case GLSL_TYPE_DOUBLE:
820 for (unsigned i = 0; i < type->components(); i++)
821 this->value.d[i] = value->value.d[0];
823 case GLSL_TYPE_UINT64:
824 case GLSL_TYPE_INT64:
825 for (unsigned i = 0; i < type->components(); i++)
826 this->value.u64[i] = value->value.u64[0];
829 for (unsigned i = 0; i < type->components(); i++)
830 this->value.b[i] = value->value.b[0];
833 assert(!"Should not get here.");
840 if (type->is_matrix() && value->type->is_matrix()) {
841 assert(value->next->is_tail_sentinel());
843 /* From section 5.4.2 of the GLSL 1.20 spec:
844 * "If a matrix is constructed from a matrix, then each component
845 * (column i, row j) in the result that has a corresponding component
846 * (column i, row j) in the argument will be initialized from there."
848 unsigned cols = MIN2(type->matrix_columns, value->type->matrix_columns);
849 unsigned rows = MIN2(type->vector_elements, value->type->vector_elements);
850 for (unsigned i = 0; i < cols; i++) {
851 for (unsigned j = 0; j < rows; j++) {
852 const unsigned src = i * value->type->vector_elements + j;
853 const unsigned dst = i * type->vector_elements + j;
854 this->value.f[dst] = value->value.f[src];
858 /* "All other components will be initialized to the identity matrix." */
859 for (unsigned i = cols; i < type->matrix_columns; i++)
860 this->value.f[i * type->vector_elements + i] = 1.0;
865 /* Use each component from each entry in the value_list to initialize one
866 * component of the constant being constructed.
870 assert(value->as_constant() != NULL);
871 assert(!value->is_tail_sentinel());
873 for (unsigned j = 0; j < value->type->components(); j++) {
874 switch (type->base_type) {
876 this->value.u[i] = value->get_uint_component(j);
879 this->value.i[i] = value->get_int_component(j);
881 case GLSL_TYPE_FLOAT:
882 this->value.f[i] = value->get_float_component(j);
885 this->value.b[i] = value->get_bool_component(j);
887 case GLSL_TYPE_DOUBLE:
888 this->value.d[i] = value->get_double_component(j);
890 case GLSL_TYPE_UINT64:
891 this->value.u64[i] = value->get_uint64_component(j);
893 case GLSL_TYPE_INT64:
894 this->value.i64[i] = value->get_int64_component(j);
897 /* FINISHME: What to do? Exceptions are not the answer.
903 if (i >= type->components())
907 if (i >= type->components())
908 break; /* avoid downcasting a list sentinel */
909 value = (ir_constant *) value->next;
914 ir_constant::zero(void *mem_ctx, const glsl_type *type)
916 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
917 || type->is_record() || type->is_array());
919 ir_constant *c = new(mem_ctx) ir_constant;
921 memset(&c->value, 0, sizeof(c->value));
923 if (type->is_array()) {
924 c->array_elements = ralloc_array(c, ir_constant *, type->length);
926 for (unsigned i = 0; i < type->length; i++)
927 c->array_elements[i] = ir_constant::zero(c, type->fields.array);
930 if (type->is_record()) {
931 for (unsigned i = 0; i < type->length; i++) {
932 ir_constant *comp = ir_constant::zero(mem_ctx, type->fields.structure[i].type);
933 c->components.push_tail(comp);
941 ir_constant::get_bool_component(unsigned i) const
943 switch (this->type->base_type) {
944 case GLSL_TYPE_UINT: return this->value.u[i] != 0;
945 case GLSL_TYPE_INT: return this->value.i[i] != 0;
946 case GLSL_TYPE_FLOAT: return ((int)this->value.f[i]) != 0;
947 case GLSL_TYPE_BOOL: return this->value.b[i];
948 case GLSL_TYPE_DOUBLE: return this->value.d[i] != 0.0;
949 case GLSL_TYPE_UINT64: return this->value.u64[i] != 0;
950 case GLSL_TYPE_INT64: return this->value.i64[i] != 0;
951 default: assert(!"Should not get here."); break;
954 /* Must return something to make the compiler happy. This is clearly an
961 ir_constant::get_float_component(unsigned i) const
963 switch (this->type->base_type) {
964 case GLSL_TYPE_UINT: return (float) this->value.u[i];
965 case GLSL_TYPE_INT: return (float) this->value.i[i];
966 case GLSL_TYPE_FLOAT: return this->value.f[i];
967 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0f : 0.0f;
968 case GLSL_TYPE_DOUBLE: return (float) this->value.d[i];
969 case GLSL_TYPE_UINT64: return (float) this->value.u64[i];
970 case GLSL_TYPE_INT64: return (float) this->value.i64[i];
971 default: assert(!"Should not get here."); break;
974 /* Must return something to make the compiler happy. This is clearly an
981 ir_constant::get_double_component(unsigned i) const
983 switch (this->type->base_type) {
984 case GLSL_TYPE_UINT: return (double) this->value.u[i];
985 case GLSL_TYPE_INT: return (double) this->value.i[i];
986 case GLSL_TYPE_FLOAT: return (double) this->value.f[i];
987 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0 : 0.0;
988 case GLSL_TYPE_DOUBLE: return this->value.d[i];
989 case GLSL_TYPE_UINT64: return (double) this->value.u64[i];
990 case GLSL_TYPE_INT64: return (double) this->value.i64[i];
991 default: assert(!"Should not get here."); break;
994 /* Must return something to make the compiler happy. This is clearly an
1001 ir_constant::get_int_component(unsigned i) const
1003 switch (this->type->base_type) {
1004 case GLSL_TYPE_UINT: return this->value.u[i];
1005 case GLSL_TYPE_INT: return this->value.i[i];
1006 case GLSL_TYPE_FLOAT: return (int) this->value.f[i];
1007 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1008 case GLSL_TYPE_DOUBLE: return (int) this->value.d[i];
1009 case GLSL_TYPE_UINT64: return (int) this->value.u64[i];
1010 case GLSL_TYPE_INT64: return (int) this->value.i64[i];
1011 default: assert(!"Should not get here."); break;
1014 /* Must return something to make the compiler happy. This is clearly an
1021 ir_constant::get_uint_component(unsigned i) const
1023 switch (this->type->base_type) {
1024 case GLSL_TYPE_UINT: return this->value.u[i];
1025 case GLSL_TYPE_INT: return this->value.i[i];
1026 case GLSL_TYPE_FLOAT: return (unsigned) this->value.f[i];
1027 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1028 case GLSL_TYPE_DOUBLE: return (unsigned) this->value.d[i];
1029 case GLSL_TYPE_UINT64: return (unsigned) this->value.u64[i];
1030 case GLSL_TYPE_INT64: return (unsigned) this->value.i64[i];
1031 default: assert(!"Should not get here."); break;
1034 /* Must return something to make the compiler happy. This is clearly an
1041 ir_constant::get_int64_component(unsigned i) const
1043 switch (this->type->base_type) {
1044 case GLSL_TYPE_UINT: return this->value.u[i];
1045 case GLSL_TYPE_INT: return this->value.i[i];
1046 case GLSL_TYPE_FLOAT: return (int64_t) this->value.f[i];
1047 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1048 case GLSL_TYPE_DOUBLE: return (int64_t) this->value.d[i];
1049 case GLSL_TYPE_UINT64: return (int64_t) this->value.u64[i];
1050 case GLSL_TYPE_INT64: return this->value.i64[i];
1051 default: assert(!"Should not get here."); break;
1054 /* Must return something to make the compiler happy. This is clearly an
1061 ir_constant::get_uint64_component(unsigned i) const
1063 switch (this->type->base_type) {
1064 case GLSL_TYPE_UINT: return this->value.u[i];
1065 case GLSL_TYPE_INT: return this->value.i[i];
1066 case GLSL_TYPE_FLOAT: return (uint64_t) this->value.f[i];
1067 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1068 case GLSL_TYPE_DOUBLE: return (uint64_t) this->value.d[i];
1069 case GLSL_TYPE_UINT64: return this->value.u64[i];
1070 case GLSL_TYPE_INT64: return (uint64_t) this->value.i64[i];
1071 default: assert(!"Should not get here."); break;
1074 /* Must return something to make the compiler happy. This is clearly an
1081 ir_constant::get_array_element(unsigned i) const
1083 assert(this->type->is_array());
1085 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1087 * "Behavior is undefined if a shader subscripts an array with an index
1088 * less than 0 or greater than or equal to the size the array was
1091 * Most out-of-bounds accesses are removed before things could get this far.
1092 * There are cases where non-constant array index values can get constant
1097 else if (i >= this->type->length)
1098 i = this->type->length - 1;
1100 return array_elements[i];
1104 ir_constant::get_record_field(const char *name)
1106 int idx = this->type->field_index(name);
1111 if (this->components.is_empty())
1114 exec_node *node = this->components.get_head_raw();
1115 for (int i = 0; i < idx; i++) {
1118 /* If the end of the list is encountered before the element matching the
1119 * requested field is found, return NULL.
1121 if (node->is_tail_sentinel())
1125 return (ir_constant *) node;
1129 ir_constant::copy_offset(ir_constant *src, int offset)
1131 switch (this->type->base_type) {
1132 case GLSL_TYPE_UINT:
1134 case GLSL_TYPE_FLOAT:
1135 case GLSL_TYPE_DOUBLE:
1136 case GLSL_TYPE_UINT64:
1137 case GLSL_TYPE_INT64:
1138 case GLSL_TYPE_BOOL: {
1139 unsigned int size = src->type->components();
1140 assert (size <= this->type->components() - offset);
1141 for (unsigned int i=0; i<size; i++) {
1142 switch (this->type->base_type) {
1143 case GLSL_TYPE_UINT:
1144 value.u[i+offset] = src->get_uint_component(i);
1147 value.i[i+offset] = src->get_int_component(i);
1149 case GLSL_TYPE_FLOAT:
1150 value.f[i+offset] = src->get_float_component(i);
1152 case GLSL_TYPE_BOOL:
1153 value.b[i+offset] = src->get_bool_component(i);
1155 case GLSL_TYPE_DOUBLE:
1156 value.d[i+offset] = src->get_double_component(i);
1158 case GLSL_TYPE_UINT64:
1159 value.u64[i+offset] = src->get_uint64_component(i);
1161 case GLSL_TYPE_INT64:
1162 value.i64[i+offset] = src->get_int64_component(i);
1164 default: // Shut up the compiler
1171 case GLSL_TYPE_STRUCT: {
1172 assert (src->type == this->type);
1173 this->components.make_empty();
1174 foreach_in_list(ir_constant, orig, &src->components) {
1175 this->components.push_tail(orig->clone(this, NULL));
1180 case GLSL_TYPE_ARRAY: {
1181 assert (src->type == this->type);
1182 for (unsigned i = 0; i < this->type->length; i++) {
1183 this->array_elements[i] = src->array_elements[i]->clone(this, NULL);
1189 assert(!"Should not get here.");
1195 ir_constant::copy_masked_offset(ir_constant *src, int offset, unsigned int mask)
1197 assert (!type->is_array() && !type->is_record());
1199 if (!type->is_vector() && !type->is_matrix()) {
1205 for (int i=0; i<4; i++) {
1206 if (mask & (1 << i)) {
1207 switch (this->type->base_type) {
1208 case GLSL_TYPE_UINT:
1209 value.u[i+offset] = src->get_uint_component(id++);
1212 value.i[i+offset] = src->get_int_component(id++);
1214 case GLSL_TYPE_FLOAT:
1215 value.f[i+offset] = src->get_float_component(id++);
1217 case GLSL_TYPE_BOOL:
1218 value.b[i+offset] = src->get_bool_component(id++);
1220 case GLSL_TYPE_DOUBLE:
1221 value.d[i+offset] = src->get_double_component(id++);
1223 case GLSL_TYPE_UINT64:
1224 value.u64[i+offset] = src->get_uint64_component(id++);
1226 case GLSL_TYPE_INT64:
1227 value.i64[i+offset] = src->get_int64_component(id++);
1230 assert(!"Should not get here.");
1238 ir_constant::has_value(const ir_constant *c) const
1240 if (this->type != c->type)
1243 if (this->type->is_array()) {
1244 for (unsigned i = 0; i < this->type->length; i++) {
1245 if (!this->array_elements[i]->has_value(c->array_elements[i]))
1251 if (this->type->is_record()) {
1252 const exec_node *a_node = this->components.get_head_raw();
1253 const exec_node *b_node = c->components.get_head_raw();
1255 while (!a_node->is_tail_sentinel()) {
1256 assert(!b_node->is_tail_sentinel());
1258 const ir_constant *const a_field = (ir_constant *) a_node;
1259 const ir_constant *const b_field = (ir_constant *) b_node;
1261 if (!a_field->has_value(b_field))
1264 a_node = a_node->next;
1265 b_node = b_node->next;
1271 for (unsigned i = 0; i < this->type->components(); i++) {
1272 switch (this->type->base_type) {
1273 case GLSL_TYPE_UINT:
1274 if (this->value.u[i] != c->value.u[i])
1278 if (this->value.i[i] != c->value.i[i])
1281 case GLSL_TYPE_FLOAT:
1282 if (this->value.f[i] != c->value.f[i])
1285 case GLSL_TYPE_BOOL:
1286 if (this->value.b[i] != c->value.b[i])
1289 case GLSL_TYPE_DOUBLE:
1290 if (this->value.d[i] != c->value.d[i])
1293 case GLSL_TYPE_UINT64:
1294 if (this->value.u64[i] != c->value.u64[i])
1297 case GLSL_TYPE_INT64:
1298 if (this->value.i64[i] != c->value.i64[i])
1302 assert(!"Should not get here.");
1311 ir_constant::is_value(float f, int i) const
1313 if (!this->type->is_scalar() && !this->type->is_vector())
1316 /* Only accept boolean values for 0/1. */
1317 if (int(bool(i)) != i && this->type->is_boolean())
1320 for (unsigned c = 0; c < this->type->vector_elements; c++) {
1321 switch (this->type->base_type) {
1322 case GLSL_TYPE_FLOAT:
1323 if (this->value.f[c] != f)
1327 if (this->value.i[c] != i)
1330 case GLSL_TYPE_UINT:
1331 if (this->value.u[c] != unsigned(i))
1334 case GLSL_TYPE_BOOL:
1335 if (this->value.b[c] != bool(i))
1338 case GLSL_TYPE_DOUBLE:
1339 if (this->value.d[c] != double(f))
1342 case GLSL_TYPE_UINT64:
1343 if (this->value.u64[c] != uint64_t(i))
1346 case GLSL_TYPE_INT64:
1347 if (this->value.i64[c] != i)
1351 /* The only other base types are structures, arrays, and samplers.
1352 * Samplers cannot be constants, and the others should have been
1353 * filtered out above.
1355 assert(!"Should not get here.");
1364 ir_constant::is_zero() const
1366 return is_value(0.0, 0);
1370 ir_constant::is_one() const
1372 return is_value(1.0, 1);
1376 ir_constant::is_negative_one() const
1378 return is_value(-1.0, -1);
1382 ir_constant::is_uint16_constant() const
1384 if (!type->is_integer())
1387 return value.u[0] < (1 << 16);
1391 : ir_instruction(ir_type_loop)
1396 ir_dereference_variable::ir_dereference_variable(ir_variable *var)
1397 : ir_dereference(ir_type_dereference_variable)
1399 assert(var != NULL);
1402 this->type = var->type;
1406 ir_dereference_array::ir_dereference_array(ir_rvalue *value,
1407 ir_rvalue *array_index)
1408 : ir_dereference(ir_type_dereference_array)
1410 this->array_index = array_index;
1411 this->set_array(value);
1415 ir_dereference_array::ir_dereference_array(ir_variable *var,
1416 ir_rvalue *array_index)
1417 : ir_dereference(ir_type_dereference_array)
1419 void *ctx = ralloc_parent(var);
1421 this->array_index = array_index;
1422 this->set_array(new(ctx) ir_dereference_variable(var));
1427 ir_dereference_array::set_array(ir_rvalue *value)
1429 assert(value != NULL);
1431 this->array = value;
1433 const glsl_type *const vt = this->array->type;
1435 if (vt->is_array()) {
1436 type = vt->fields.array;
1437 } else if (vt->is_matrix()) {
1438 type = vt->column_type();
1439 } else if (vt->is_vector()) {
1440 type = vt->get_base_type();
1445 ir_dereference_record::ir_dereference_record(ir_rvalue *value,
1447 : ir_dereference(ir_type_dereference_record)
1449 assert(value != NULL);
1451 this->record = value;
1452 this->field = ralloc_strdup(this, field);
1453 this->type = this->record->type->field_type(field);
1457 ir_dereference_record::ir_dereference_record(ir_variable *var,
1459 : ir_dereference(ir_type_dereference_record)
1461 void *ctx = ralloc_parent(var);
1463 this->record = new(ctx) ir_dereference_variable(var);
1464 this->field = ralloc_strdup(this, field);
1465 this->type = this->record->type->field_type(field);
1469 ir_dereference::is_lvalue(const struct _mesa_glsl_parse_state *state) const
1471 ir_variable *var = this->variable_referenced();
1473 /* Every l-value derference chain eventually ends in a variable.
1475 if ((var == NULL) || var->data.read_only)
1478 /* From section 4.1.7 of the ARB_bindless_texture spec:
1480 * "Samplers can be used as l-values, so can be assigned into and used as
1481 * "out" and "inout" function parameters."
1483 * From section 4.1.X of the ARB_bindless_texture spec:
1485 * "Images can be used as l-values, so can be assigned into and used as
1486 * "out" and "inout" function parameters."
1488 if ((!state || state->has_bindless()) &&
1489 (this->type->contains_sampler() || this->type->contains_image()))
1492 /* From section 4.1.7 of the GLSL 4.40 spec:
1494 * "Opaque variables cannot be treated as l-values; hence cannot
1495 * be used as out or inout function parameters, nor can they be
1498 if (this->type->contains_opaque())
1505 static const char * const tex_opcode_strs[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1507 const char *ir_texture::opcode_string()
1509 assert((unsigned int) op < ARRAY_SIZE(tex_opcode_strs));
1510 return tex_opcode_strs[op];
1514 ir_texture::get_opcode(const char *str)
1516 const int count = sizeof(tex_opcode_strs) / sizeof(tex_opcode_strs[0]);
1517 for (int op = 0; op < count; op++) {
1518 if (strcmp(str, tex_opcode_strs[op]) == 0)
1519 return (ir_texture_opcode) op;
1521 return (ir_texture_opcode) -1;
1526 ir_texture::set_sampler(ir_dereference *sampler, const glsl_type *type)
1528 assert(sampler != NULL);
1529 assert(type != NULL);
1530 this->sampler = sampler;
1533 if (this->op == ir_txs || this->op == ir_query_levels ||
1534 this->op == ir_texture_samples) {
1535 assert(type->base_type == GLSL_TYPE_INT);
1536 } else if (this->op == ir_lod) {
1537 assert(type->vector_elements == 2);
1538 assert(type->is_float());
1539 } else if (this->op == ir_samples_identical) {
1540 assert(type == glsl_type::bool_type);
1541 assert(sampler->type->is_sampler());
1542 assert(sampler->type->sampler_dimensionality == GLSL_SAMPLER_DIM_MS);
1544 assert(sampler->type->sampled_type == (int) type->base_type);
1545 if (sampler->type->sampler_shadow)
1546 assert(type->vector_elements == 4 || type->vector_elements == 1);
1548 assert(type->vector_elements == 4);
1554 ir_swizzle::init_mask(const unsigned *comp, unsigned count)
1556 assert((count >= 1) && (count <= 4));
1558 memset(&this->mask, 0, sizeof(this->mask));
1559 this->mask.num_components = count;
1561 unsigned dup_mask = 0;
1564 assert(comp[3] <= 3);
1565 dup_mask |= (1U << comp[3])
1566 & ((1U << comp[0]) | (1U << comp[1]) | (1U << comp[2]));
1567 this->mask.w = comp[3];
1570 assert(comp[2] <= 3);
1571 dup_mask |= (1U << comp[2])
1572 & ((1U << comp[0]) | (1U << comp[1]));
1573 this->mask.z = comp[2];
1576 assert(comp[1] <= 3);
1577 dup_mask |= (1U << comp[1])
1578 & ((1U << comp[0]));
1579 this->mask.y = comp[1];
1582 assert(comp[0] <= 3);
1583 this->mask.x = comp[0];
1586 this->mask.has_duplicates = dup_mask != 0;
1588 /* Based on the number of elements in the swizzle and the base type
1589 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1590 * generate the type of the resulting value.
1592 type = glsl_type::get_instance(val->type->base_type, mask.num_components, 1);
1595 ir_swizzle::ir_swizzle(ir_rvalue *val, unsigned x, unsigned y, unsigned z,
1596 unsigned w, unsigned count)
1597 : ir_rvalue(ir_type_swizzle), val(val)
1599 const unsigned components[4] = { x, y, z, w };
1600 this->init_mask(components, count);
1603 ir_swizzle::ir_swizzle(ir_rvalue *val, const unsigned *comp,
1605 : ir_rvalue(ir_type_swizzle), val(val)
1607 this->init_mask(comp, count);
1610 ir_swizzle::ir_swizzle(ir_rvalue *val, ir_swizzle_mask mask)
1611 : ir_rvalue(ir_type_swizzle), val(val), mask(mask)
1613 this->type = glsl_type::get_instance(val->type->base_type,
1614 mask.num_components, 1);
1623 ir_swizzle::create(ir_rvalue *val, const char *str, unsigned vector_length)
1625 void *ctx = ralloc_parent(val);
1627 /* For each possible swizzle character, this table encodes the value in
1628 * \c idx_map that represents the 0th element of the vector. For invalid
1629 * swizzle characters (e.g., 'k'), a special value is used that will allow
1630 * detection of errors.
1632 static const unsigned char base_idx[26] = {
1633 /* a b c d e f g h i j k l m */
1634 R, R, I, I, I, I, R, I, I, I, I, I, I,
1635 /* n o p q r s t u v w x y z */
1636 I, I, S, S, R, S, S, I, I, X, X, X, X
1639 /* Each valid swizzle character has an entry in the previous table. This
1640 * table encodes the base index encoded in the previous table plus the actual
1641 * index of the swizzle character. When processing swizzles, the first
1642 * character in the string is indexed in the previous table. Each character
1643 * in the string is indexed in this table, and the value found there has the
1644 * value form the first table subtracted. The result must be on the range
1647 * For example, the string "wzyx" will get X from the first table. Each of
1648 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1649 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1651 * The string "wzrg" will get X from the first table. Each of the characters
1652 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1653 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1654 * [0,3], the error is detected.
1656 static const unsigned char idx_map[26] = {
1657 /* a b c d e f g h i j k l m */
1658 R+3, R+2, 0, 0, 0, 0, R+1, 0, 0, 0, 0, 0, 0,
1659 /* n o p q r s t u v w x y z */
1660 0, 0, S+2, S+3, R+0, S+0, S+1, 0, 0, X+3, X+0, X+1, X+2
1663 int swiz_idx[4] = { 0, 0, 0, 0 };
1667 /* Validate the first character in the swizzle string and look up the base
1668 * index value as described above.
1670 if ((str[0] < 'a') || (str[0] > 'z'))
1673 const unsigned base = base_idx[str[0] - 'a'];
1676 for (i = 0; (i < 4) && (str[i] != '\0'); i++) {
1677 /* Validate the next character, and, as described above, convert it to a
1680 if ((str[i] < 'a') || (str[i] > 'z'))
1683 swiz_idx[i] = idx_map[str[i] - 'a'] - base;
1684 if ((swiz_idx[i] < 0) || (swiz_idx[i] >= (int) vector_length))
1691 return new(ctx) ir_swizzle(val, swiz_idx[0], swiz_idx[1], swiz_idx[2],
1701 ir_swizzle::variable_referenced() const
1703 return this->val->variable_referenced();
1707 bool ir_variable::temporaries_allocate_names = false;
1709 const char ir_variable::tmp_name[] = "compiler_temp";
1711 ir_variable::ir_variable(const struct glsl_type *type, const char *name,
1712 ir_variable_mode mode)
1713 : ir_instruction(ir_type_variable)
1717 if (mode == ir_var_temporary && !ir_variable::temporaries_allocate_names)
1720 /* The ir_variable clone method may call this constructor with name set to
1724 || mode == ir_var_temporary
1725 || mode == ir_var_function_in
1726 || mode == ir_var_function_out
1727 || mode == ir_var_function_inout);
1728 assert(name != ir_variable::tmp_name
1729 || mode == ir_var_temporary);
1730 if (mode == ir_var_temporary
1731 && (name == NULL || name == ir_variable::tmp_name)) {
1732 this->name = ir_variable::tmp_name;
1733 } else if (name == NULL ||
1734 strlen(name) < ARRAY_SIZE(this->name_storage)) {
1735 strcpy(this->name_storage, name ? name : "");
1736 this->name = this->name_storage;
1738 this->name = ralloc_strdup(this, name);
1741 this->u.max_ifc_array_access = NULL;
1743 this->data.explicit_location = false;
1744 this->data.has_initializer = false;
1745 this->data.location = -1;
1746 this->data.location_frac = 0;
1747 this->data.binding = 0;
1748 this->data.warn_extension_index = 0;
1749 this->constant_value = NULL;
1750 this->constant_initializer = NULL;
1751 this->data.origin_upper_left = false;
1752 this->data.pixel_center_integer = false;
1753 this->data.depth_layout = ir_depth_layout_none;
1754 this->data.used = false;
1755 this->data.always_active_io = false;
1756 this->data.read_only = false;
1757 this->data.centroid = false;
1758 this->data.sample = false;
1759 this->data.patch = false;
1760 this->data.invariant = false;
1761 this->data.how_declared = ir_var_declared_normally;
1762 this->data.mode = mode;
1763 this->data.interpolation = INTERP_MODE_NONE;
1764 this->data.max_array_access = -1;
1765 this->data.offset = 0;
1766 this->data.precision = GLSL_PRECISION_NONE;
1767 this->data.memory_read_only = false;
1768 this->data.memory_write_only = false;
1769 this->data.memory_coherent = false;
1770 this->data.memory_volatile = false;
1771 this->data.memory_restrict = false;
1772 this->data.from_ssbo_unsized_array = false;
1773 this->data.fb_fetch_output = false;
1774 this->data.bindless = false;
1775 this->data.bound = false;
1778 if (type->is_interface())
1779 this->init_interface_type(type);
1780 else if (type->without_array()->is_interface())
1781 this->init_interface_type(type->without_array());
1787 interpolation_string(unsigned interpolation)
1789 switch (interpolation) {
1790 case INTERP_MODE_NONE: return "no";
1791 case INTERP_MODE_SMOOTH: return "smooth";
1792 case INTERP_MODE_FLAT: return "flat";
1793 case INTERP_MODE_NOPERSPECTIVE: return "noperspective";
1796 assert(!"Should not get here.");
1800 const char *const ir_variable::warn_extension_table[] = {
1802 "GL_ARB_shader_stencil_export",
1803 "GL_AMD_shader_stencil_export",
1807 ir_variable::enable_extension_warning(const char *extension)
1809 for (unsigned i = 0; i < ARRAY_SIZE(warn_extension_table); i++) {
1810 if (strcmp(warn_extension_table[i], extension) == 0) {
1811 this->data.warn_extension_index = i;
1816 assert(!"Should not get here.");
1817 this->data.warn_extension_index = 0;
1821 ir_variable::get_extension_warning() const
1823 return this->data.warn_extension_index == 0
1824 ? NULL : warn_extension_table[this->data.warn_extension_index];
1827 ir_function_signature::ir_function_signature(const glsl_type *return_type,
1828 builtin_available_predicate b)
1829 : ir_instruction(ir_type_function_signature),
1830 return_type(return_type), is_defined(false),
1831 intrinsic_id(ir_intrinsic_invalid), builtin_avail(b), _function(NULL)
1833 this->origin = NULL;
1838 ir_function_signature::is_builtin() const
1840 return builtin_avail != NULL;
1845 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state *state) const
1847 /* We can't call the predicate without a state pointer, so just say that
1848 * the signature is available. At compile time, we need the filtering,
1849 * but also receive a valid state pointer. At link time, we're resolving
1850 * imported built-in prototypes to their definitions, which will always
1851 * be an exact match. So we can skip the filtering.
1856 assert(builtin_avail != NULL);
1857 return builtin_avail(state);
1862 modes_match(unsigned a, unsigned b)
1867 /* Accept "in" vs. "const in" */
1868 if ((a == ir_var_const_in && b == ir_var_function_in) ||
1869 (b == ir_var_const_in && a == ir_var_function_in))
1877 ir_function_signature::qualifiers_match(exec_list *params)
1879 /* check that the qualifiers match. */
1880 foreach_two_lists(a_node, &this->parameters, b_node, params) {
1881 ir_variable *a = (ir_variable *) a_node;
1882 ir_variable *b = (ir_variable *) b_node;
1884 if (a->data.read_only != b->data.read_only ||
1885 !modes_match(a->data.mode, b->data.mode) ||
1886 a->data.interpolation != b->data.interpolation ||
1887 a->data.centroid != b->data.centroid ||
1888 a->data.sample != b->data.sample ||
1889 a->data.patch != b->data.patch ||
1890 a->data.memory_read_only != b->data.memory_read_only ||
1891 a->data.memory_write_only != b->data.memory_write_only ||
1892 a->data.memory_coherent != b->data.memory_coherent ||
1893 a->data.memory_volatile != b->data.memory_volatile ||
1894 a->data.memory_restrict != b->data.memory_restrict) {
1896 /* parameter a's qualifiers don't match */
1905 ir_function_signature::replace_parameters(exec_list *new_params)
1907 /* Destroy all of the previous parameter information. If the previous
1908 * parameter information comes from the function prototype, it may either
1909 * specify incorrect parameter names or not have names at all.
1911 new_params->move_nodes_to(¶meters);
1915 ir_function::ir_function(const char *name)
1916 : ir_instruction(ir_type_function)
1918 this->subroutine_index = -1;
1919 this->name = ralloc_strdup(this, name);
1924 ir_function::has_user_signature()
1926 foreach_in_list(ir_function_signature, sig, &this->signatures) {
1927 if (!sig->is_builtin())
1935 ir_rvalue::error_value(void *mem_ctx)
1937 ir_rvalue *v = new(mem_ctx) ir_rvalue(ir_type_unset);
1939 v->type = glsl_type::error_type;
1945 visit_exec_list(exec_list *list, ir_visitor *visitor)
1947 foreach_in_list_safe(ir_instruction, node, list) {
1948 node->accept(visitor);
1954 steal_memory(ir_instruction *ir, void *new_ctx)
1956 ir_variable *var = ir->as_variable();
1957 ir_function *fn = ir->as_function();
1958 ir_constant *constant = ir->as_constant();
1959 if (var != NULL && var->constant_value != NULL)
1960 steal_memory(var->constant_value, ir);
1962 if (var != NULL && var->constant_initializer != NULL)
1963 steal_memory(var->constant_initializer, ir);
1965 if (fn != NULL && fn->subroutine_types)
1966 ralloc_steal(new_ctx, fn->subroutine_types);
1968 /* The components of aggregate constants are not visited by the normal
1969 * visitor, so steal their values by hand.
1971 if (constant != NULL) {
1972 if (constant->type->is_record()) {
1973 foreach_in_list(ir_constant, field, &constant->components) {
1974 steal_memory(field, ir);
1976 } else if (constant->type->is_array()) {
1977 for (unsigned int i = 0; i < constant->type->length; i++) {
1978 steal_memory(constant->array_elements[i], ir);
1983 ralloc_steal(new_ctx, ir);
1988 reparent_ir(exec_list *list, void *mem_ctx)
1990 foreach_in_list(ir_instruction, node, list) {
1991 visit_tree(node, steal_memory, mem_ctx);
1997 try_min_one(ir_rvalue *ir)
1999 ir_expression *expr = ir->as_expression();
2001 if (!expr || expr->operation != ir_binop_min)
2004 if (expr->operands[0]->is_one())
2005 return expr->operands[1];
2007 if (expr->operands[1]->is_one())
2008 return expr->operands[0];
2014 try_max_zero(ir_rvalue *ir)
2016 ir_expression *expr = ir->as_expression();
2018 if (!expr || expr->operation != ir_binop_max)
2021 if (expr->operands[0]->is_zero())
2022 return expr->operands[1];
2024 if (expr->operands[1]->is_zero())
2025 return expr->operands[0];
2031 ir_rvalue::as_rvalue_to_saturate()
2033 ir_expression *expr = this->as_expression();
2038 ir_rvalue *max_zero = try_max_zero(expr);
2040 return try_min_one(max_zero);
2042 ir_rvalue *min_one = try_min_one(expr);
2044 return try_max_zero(min_one);
2053 vertices_per_prim(GLenum prim)
2062 case GL_LINES_ADJACENCY:
2064 case GL_TRIANGLES_ADJACENCY:
2067 assert(!"Bad primitive");
2073 * Generate a string describing the mode of a variable
2076 mode_string(const ir_variable *var)
2078 switch (var->data.mode) {
2080 return (var->data.read_only) ? "global constant" : "global variable";
2082 case ir_var_uniform:
2085 case ir_var_shader_storage:
2088 case ir_var_shader_in:
2089 return "shader input";
2091 case ir_var_shader_out:
2092 return "shader output";
2094 case ir_var_function_in:
2095 case ir_var_const_in:
2096 return "function input";
2098 case ir_var_function_out:
2099 return "function output";
2101 case ir_var_function_inout:
2102 return "function inout";
2104 case ir_var_system_value:
2105 return "shader input";
2107 case ir_var_temporary:
2108 return "compiler temporary";
2110 case ir_var_mode_count:
2114 assert(!"Should not get here.");
2115 return "invalid variable";