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21 * DEALINGS IN THE SOFTWARE.
24 #include "main/core.h" /* for MAX2 */
26 #include "compiler/glsl_types.h"
28 ir_rvalue::ir_rvalue(enum ir_node_type t)
31 this->type = glsl_type::error_type;
34 bool ir_rvalue::is_zero() const
39 bool ir_rvalue::is_one() const
44 bool ir_rvalue::is_negative_one() const
50 * Modify the swizzle make to move one component to another
52 * \param m IR swizzle to be modified
53 * \param from Component in the RHS that is to be swizzled
54 * \param to Desired swizzle location of \c from
57 update_rhs_swizzle(ir_swizzle_mask &m, unsigned from, unsigned to)
60 case 0: m.x = from; break;
61 case 1: m.y = from; break;
62 case 2: m.z = from; break;
63 case 3: m.w = from; break;
64 default: assert(!"Should not get here.");
69 ir_assignment::set_lhs(ir_rvalue *lhs)
72 bool swizzled = false;
75 ir_swizzle *swiz = lhs->as_swizzle();
80 unsigned write_mask = 0;
81 ir_swizzle_mask rhs_swiz = { 0, 0, 0, 0, 0, 0 };
83 for (unsigned i = 0; i < swiz->mask.num_components; i++) {
87 case 0: c = swiz->mask.x; break;
88 case 1: c = swiz->mask.y; break;
89 case 2: c = swiz->mask.z; break;
90 case 3: c = swiz->mask.w; break;
91 default: assert(!"Should not get here.");
94 write_mask |= (((this->write_mask >> i) & 1) << c);
95 update_rhs_swizzle(rhs_swiz, i, c);
96 rhs_swiz.num_components = swiz->val->type->vector_elements;
99 this->write_mask = write_mask;
102 this->rhs = new(mem_ctx) ir_swizzle(this->rhs, rhs_swiz);
107 /* Now, RHS channels line up with the LHS writemask. Collapse it
108 * to just the channels that will be written.
110 ir_swizzle_mask rhs_swiz = { 0, 0, 0, 0, 0, 0 };
112 for (int i = 0; i < 4; i++) {
113 if (write_mask & (1 << i))
114 update_rhs_swizzle(rhs_swiz, i, rhs_chan++);
116 rhs_swiz.num_components = rhs_chan;
117 this->rhs = new(mem_ctx) ir_swizzle(this->rhs, rhs_swiz);
120 assert((lhs == NULL) || lhs->as_dereference());
122 this->lhs = (ir_dereference *) lhs;
126 ir_assignment::whole_variable_written()
128 ir_variable *v = this->lhs->whole_variable_referenced();
133 if (v->type->is_scalar())
136 if (v->type->is_vector()) {
137 const unsigned mask = (1U << v->type->vector_elements) - 1;
139 if (mask != this->write_mask)
143 /* Either all the vector components are assigned or the variable is some
144 * composite type (and the whole thing is assigned.
149 ir_assignment::ir_assignment(ir_dereference *lhs, ir_rvalue *rhs,
150 ir_rvalue *condition, unsigned write_mask)
151 : ir_instruction(ir_type_assignment)
153 this->condition = condition;
156 this->write_mask = write_mask;
158 if (lhs->type->is_scalar() || lhs->type->is_vector()) {
159 int lhs_components = 0;
160 for (int i = 0; i < 4; i++) {
161 if (write_mask & (1 << i))
165 assert(lhs_components == this->rhs->type->vector_elements);
169 ir_assignment::ir_assignment(ir_rvalue *lhs, ir_rvalue *rhs,
170 ir_rvalue *condition)
171 : ir_instruction(ir_type_assignment)
173 this->condition = condition;
176 /* If the RHS is a vector type, assume that all components of the vector
177 * type are being written to the LHS. The write mask comes from the RHS
178 * because we can have a case where the LHS is a vec4 and the RHS is a
179 * vec3. In that case, the assignment is:
181 * (assign (...) (xyz) (var_ref lhs) (var_ref rhs))
183 if (rhs->type->is_vector())
184 this->write_mask = (1U << rhs->type->vector_elements) - 1;
185 else if (rhs->type->is_scalar())
186 this->write_mask = 1;
188 this->write_mask = 0;
193 ir_expression::ir_expression(int op, const struct glsl_type *type,
194 ir_rvalue *op0, ir_rvalue *op1,
195 ir_rvalue *op2, ir_rvalue *op3)
196 : ir_rvalue(ir_type_expression)
199 this->operation = ir_expression_operation(op);
200 this->operands[0] = op0;
201 this->operands[1] = op1;
202 this->operands[2] = op2;
203 this->operands[3] = op3;
205 int num_operands = get_num_operands(this->operation);
206 for (int i = num_operands; i < 4; i++) {
207 assert(this->operands[i] == NULL);
212 ir_expression::ir_expression(int op, ir_rvalue *op0)
213 : ir_rvalue(ir_type_expression)
215 this->operation = ir_expression_operation(op);
216 this->operands[0] = op0;
217 this->operands[1] = NULL;
218 this->operands[2] = NULL;
219 this->operands[3] = NULL;
221 assert(op <= ir_last_unop);
223 switch (this->operation) {
224 case ir_unop_bit_not:
225 case ir_unop_logic_not:
240 case ir_unop_round_even:
244 case ir_unop_dFdx_coarse:
245 case ir_unop_dFdx_fine:
247 case ir_unop_dFdy_coarse:
248 case ir_unop_dFdy_fine:
249 case ir_unop_bitfield_reverse:
250 case ir_unop_interpolate_at_centroid:
251 case ir_unop_saturate:
252 this->type = op0->type;
259 case ir_unop_bitcast_f2i:
260 case ir_unop_bit_count:
261 case ir_unop_find_msb:
262 case ir_unop_find_lsb:
263 case ir_unop_subroutine_to_int:
266 this->type = glsl_type::get_instance(GLSL_TYPE_INT,
267 op0->type->vector_elements, 1);
274 case ir_unop_bitcast_i2f:
275 case ir_unop_bitcast_u2f:
278 this->type = glsl_type::get_instance(GLSL_TYPE_FLOAT,
279 op0->type->vector_elements, 1);
286 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL,
287 op0->type->vector_elements, 1);
295 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE,
296 op0->type->vector_elements, 1);
302 case ir_unop_bitcast_f2u:
305 this->type = glsl_type::get_instance(GLSL_TYPE_UINT,
306 op0->type->vector_elements, 1);
314 case ir_unop_u642i64:
315 this->type = glsl_type::get_instance(GLSL_TYPE_INT64,
316 op0->type->vector_elements, 1);
323 case ir_unop_i642u64:
324 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64,
325 op0->type->vector_elements, 1);
328 this->type = glsl_type::float_type;
331 case ir_unop_unpack_double_2x32:
332 case ir_unop_unpack_uint_2x32:
333 this->type = glsl_type::uvec2_type;
336 case ir_unop_unpack_int_2x32:
337 this->type = glsl_type::ivec2_type;
340 case ir_unop_pack_snorm_2x16:
341 case ir_unop_pack_snorm_4x8:
342 case ir_unop_pack_unorm_2x16:
343 case ir_unop_pack_unorm_4x8:
344 case ir_unop_pack_half_2x16:
345 this->type = glsl_type::uint_type;
348 case ir_unop_pack_double_2x32:
349 this->type = glsl_type::double_type;
352 case ir_unop_pack_int_2x32:
353 this->type = glsl_type::int64_t_type;
356 case ir_unop_pack_uint_2x32:
357 this->type = glsl_type::uint64_t_type;
360 case ir_unop_unpack_snorm_2x16:
361 case ir_unop_unpack_unorm_2x16:
362 case ir_unop_unpack_half_2x16:
363 this->type = glsl_type::vec2_type;
366 case ir_unop_unpack_snorm_4x8:
367 case ir_unop_unpack_unorm_4x8:
368 this->type = glsl_type::vec4_type;
371 case ir_unop_frexp_sig:
372 this->type = op0->type;
374 case ir_unop_frexp_exp:
375 this->type = glsl_type::get_instance(GLSL_TYPE_INT,
376 op0->type->vector_elements, 1);
379 case ir_unop_get_buffer_size:
380 case ir_unop_ssbo_unsized_array_length:
381 this->type = glsl_type::int_type;
385 this->type = glsl_type::uint64_t_type;
388 case ir_unop_read_first_invocation:
389 this->type = op0->type;
392 case ir_unop_vote_any:
393 case ir_unop_vote_all:
394 case ir_unop_vote_eq:
395 this->type = glsl_type::bool_type;
398 case ir_unop_bitcast_i642d:
399 case ir_unop_bitcast_u642d:
400 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE,
401 op0->type->vector_elements, 1);
404 case ir_unop_bitcast_d2i64:
405 this->type = glsl_type::get_instance(GLSL_TYPE_INT64,
406 op0->type->vector_elements, 1);
408 case ir_unop_bitcast_d2u64:
409 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64,
410 op0->type->vector_elements, 1);
414 assert(!"not reached: missing automatic type setup for ir_expression");
415 this->type = op0->type;
420 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1)
421 : ir_rvalue(ir_type_expression)
423 this->operation = ir_expression_operation(op);
424 this->operands[0] = op0;
425 this->operands[1] = op1;
426 this->operands[2] = NULL;
427 this->operands[3] = NULL;
429 assert(op > ir_last_unop);
431 switch (this->operation) {
432 case ir_binop_all_equal:
433 case ir_binop_any_nequal:
434 this->type = glsl_type::bool_type;
445 if (op0->type->is_scalar()) {
446 this->type = op1->type;
447 } else if (op1->type->is_scalar()) {
448 this->type = op0->type;
450 if (this->operation == ir_binop_mul) {
451 this->type = glsl_type::get_mul_type(op0->type, op1->type);
453 assert(op0->type == op1->type);
454 this->type = op0->type;
459 case ir_binop_logic_and:
460 case ir_binop_logic_xor:
461 case ir_binop_logic_or:
462 case ir_binop_bit_and:
463 case ir_binop_bit_xor:
464 case ir_binop_bit_or:
465 assert(!op0->type->is_matrix());
466 assert(!op1->type->is_matrix());
467 if (op0->type->is_scalar()) {
468 this->type = op1->type;
469 } else if (op1->type->is_scalar()) {
470 this->type = op0->type;
472 assert(op0->type->vector_elements == op1->type->vector_elements);
473 this->type = op0->type;
478 case ir_binop_nequal:
479 case ir_binop_lequal:
480 case ir_binop_gequal:
482 case ir_binop_greater:
483 assert(op0->type == op1->type);
484 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL,
485 op0->type->vector_elements, 1);
489 this->type = op0->type->get_base_type();
492 case ir_binop_imul_high:
494 case ir_binop_borrow:
495 case ir_binop_lshift:
496 case ir_binop_rshift:
498 case ir_binop_interpolate_at_offset:
499 case ir_binop_interpolate_at_sample:
500 this->type = op0->type;
503 case ir_binop_vector_extract:
504 this->type = op0->type->get_scalar_type();
507 case ir_binop_read_invocation:
508 this->type = op0->type;
512 assert(!"not reached: missing automatic type setup for ir_expression");
513 this->type = glsl_type::float_type;
517 ir_expression::ir_expression(int op, ir_rvalue *op0, ir_rvalue *op1,
519 : ir_rvalue(ir_type_expression)
521 this->operation = ir_expression_operation(op);
522 this->operands[0] = op0;
523 this->operands[1] = op1;
524 this->operands[2] = op2;
525 this->operands[3] = NULL;
527 assert(op > ir_last_binop && op <= ir_last_triop);
529 switch (this->operation) {
532 case ir_triop_bitfield_extract:
533 case ir_triop_vector_insert:
534 this->type = op0->type;
538 this->type = op1->type;
542 assert(!"not reached: missing automatic type setup for ir_expression");
543 this->type = glsl_type::float_type;
548 ir_expression::get_num_operands(ir_expression_operation op)
550 assert(op <= ir_last_opcode);
552 if (op <= ir_last_unop)
555 if (op <= ir_last_binop)
558 if (op <= ir_last_triop)
561 if (op <= ir_last_quadop)
568 #include "ir_expression_operation_strings.h"
571 depth_layout_string(ir_depth_layout layout)
574 case ir_depth_layout_none: return "";
575 case ir_depth_layout_any: return "depth_any";
576 case ir_depth_layout_greater: return "depth_greater";
577 case ir_depth_layout_less: return "depth_less";
578 case ir_depth_layout_unchanged: return "depth_unchanged";
586 ir_expression_operation
587 ir_expression::get_operator(const char *str)
589 for (int op = 0; op <= int(ir_last_opcode); op++) {
590 if (strcmp(str, ir_expression_operation_strings[op]) == 0)
591 return (ir_expression_operation) op;
593 return (ir_expression_operation) -1;
597 ir_expression::variable_referenced() const
600 case ir_binop_vector_extract:
601 case ir_triop_vector_insert:
602 /* We get these for things like a[0] where a is a vector type. In these
603 * cases we want variable_referenced() to return the actual vector
604 * variable this is wrapping.
606 return operands[0]->variable_referenced();
608 return ir_rvalue::variable_referenced();
612 ir_constant::ir_constant()
613 : ir_rvalue(ir_type_constant)
615 this->array_elements = NULL;
618 ir_constant::ir_constant(const struct glsl_type *type,
619 const ir_constant_data *data)
620 : ir_rvalue(ir_type_constant)
622 this->array_elements = NULL;
624 assert((type->base_type >= GLSL_TYPE_UINT)
625 && (type->base_type <= GLSL_TYPE_BOOL));
628 memcpy(& this->value, data, sizeof(this->value));
631 ir_constant::ir_constant(float f, unsigned vector_elements)
632 : ir_rvalue(ir_type_constant)
634 assert(vector_elements <= 4);
635 this->type = glsl_type::get_instance(GLSL_TYPE_FLOAT, vector_elements, 1);
636 for (unsigned i = 0; i < vector_elements; i++) {
637 this->value.f[i] = f;
639 for (unsigned i = vector_elements; i < 16; i++) {
640 this->value.f[i] = 0;
644 ir_constant::ir_constant(double d, unsigned vector_elements)
645 : ir_rvalue(ir_type_constant)
647 assert(vector_elements <= 4);
648 this->type = glsl_type::get_instance(GLSL_TYPE_DOUBLE, vector_elements, 1);
649 for (unsigned i = 0; i < vector_elements; i++) {
650 this->value.d[i] = d;
652 for (unsigned i = vector_elements; i < 16; i++) {
653 this->value.d[i] = 0.0;
657 ir_constant::ir_constant(unsigned int u, unsigned vector_elements)
658 : ir_rvalue(ir_type_constant)
660 assert(vector_elements <= 4);
661 this->type = glsl_type::get_instance(GLSL_TYPE_UINT, vector_elements, 1);
662 for (unsigned i = 0; i < vector_elements; i++) {
663 this->value.u[i] = u;
665 for (unsigned i = vector_elements; i < 16; i++) {
666 this->value.u[i] = 0;
670 ir_constant::ir_constant(int integer, unsigned vector_elements)
671 : ir_rvalue(ir_type_constant)
673 assert(vector_elements <= 4);
674 this->type = glsl_type::get_instance(GLSL_TYPE_INT, vector_elements, 1);
675 for (unsigned i = 0; i < vector_elements; i++) {
676 this->value.i[i] = integer;
678 for (unsigned i = vector_elements; i < 16; i++) {
679 this->value.i[i] = 0;
683 ir_constant::ir_constant(uint64_t u64, unsigned vector_elements)
684 : ir_rvalue(ir_type_constant)
686 assert(vector_elements <= 4);
687 this->type = glsl_type::get_instance(GLSL_TYPE_UINT64, vector_elements, 1);
688 for (unsigned i = 0; i < vector_elements; i++) {
689 this->value.u64[i] = u64;
691 for (unsigned i = vector_elements; i < 16; i++) {
692 this->value.u64[i] = 0;
696 ir_constant::ir_constant(int64_t int64, unsigned vector_elements)
697 : ir_rvalue(ir_type_constant)
699 assert(vector_elements <= 4);
700 this->type = glsl_type::get_instance(GLSL_TYPE_INT64, vector_elements, 1);
701 for (unsigned i = 0; i < vector_elements; i++) {
702 this->value.i64[i] = int64;
704 for (unsigned i = vector_elements; i < 16; i++) {
705 this->value.i64[i] = 0;
709 ir_constant::ir_constant(bool b, unsigned vector_elements)
710 : ir_rvalue(ir_type_constant)
712 assert(vector_elements <= 4);
713 this->type = glsl_type::get_instance(GLSL_TYPE_BOOL, vector_elements, 1);
714 for (unsigned i = 0; i < vector_elements; i++) {
715 this->value.b[i] = b;
717 for (unsigned i = vector_elements; i < 16; i++) {
718 this->value.b[i] = false;
722 ir_constant::ir_constant(const ir_constant *c, unsigned i)
723 : ir_rvalue(ir_type_constant)
725 this->array_elements = NULL;
726 this->type = c->type->get_base_type();
728 switch (this->type->base_type) {
729 case GLSL_TYPE_UINT: this->value.u[0] = c->value.u[i]; break;
730 case GLSL_TYPE_INT: this->value.i[0] = c->value.i[i]; break;
731 case GLSL_TYPE_FLOAT: this->value.f[0] = c->value.f[i]; break;
732 case GLSL_TYPE_BOOL: this->value.b[0] = c->value.b[i]; break;
733 case GLSL_TYPE_DOUBLE: this->value.d[0] = c->value.d[i]; break;
734 default: assert(!"Should not get here."); break;
738 ir_constant::ir_constant(const struct glsl_type *type, exec_list *value_list)
739 : ir_rvalue(ir_type_constant)
741 this->array_elements = NULL;
744 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
745 || type->is_record() || type->is_array());
747 if (type->is_array()) {
748 this->array_elements = ralloc_array(this, ir_constant *, type->length);
750 foreach_in_list(ir_constant, value, value_list) {
751 assert(value->as_constant() != NULL);
753 this->array_elements[i++] = value;
758 /* If the constant is a record, the types of each of the entries in
759 * value_list must be a 1-for-1 match with the structure components. Each
760 * entry must also be a constant. Just move the nodes from the value_list
761 * to the list in the ir_constant.
763 /* FINISHME: Should there be some type checking and / or assertions here? */
764 /* FINISHME: Should the new constant take ownership of the nodes from
765 * FINISHME: value_list, or should it make copies?
767 if (type->is_record()) {
768 value_list->move_nodes_to(& this->components);
772 for (unsigned i = 0; i < 16; i++) {
773 this->value.u[i] = 0;
776 ir_constant *value = (ir_constant *) (value_list->get_head_raw());
778 /* Constructors with exactly one scalar argument are special for vectors
779 * and matrices. For vectors, the scalar value is replicated to fill all
780 * the components. For matrices, the scalar fills the components of the
781 * diagonal while the rest is filled with 0.
783 if (value->type->is_scalar() && value->next->is_tail_sentinel()) {
784 if (type->is_matrix()) {
785 /* Matrix - fill diagonal (rest is already set to 0) */
786 assert(type->is_float() || type->is_double());
787 for (unsigned i = 0; i < type->matrix_columns; i++) {
788 if (type->is_float())
789 this->value.f[i * type->vector_elements + i] =
792 this->value.d[i * type->vector_elements + i] =
796 /* Vector or scalar - fill all components */
797 switch (type->base_type) {
800 for (unsigned i = 0; i < type->components(); i++)
801 this->value.u[i] = value->value.u[0];
803 case GLSL_TYPE_FLOAT:
804 for (unsigned i = 0; i < type->components(); i++)
805 this->value.f[i] = value->value.f[0];
807 case GLSL_TYPE_DOUBLE:
808 for (unsigned i = 0; i < type->components(); i++)
809 this->value.d[i] = value->value.d[0];
811 case GLSL_TYPE_UINT64:
812 case GLSL_TYPE_INT64:
813 for (unsigned i = 0; i < type->components(); i++)
814 this->value.u64[i] = value->value.u64[0];
817 for (unsigned i = 0; i < type->components(); i++)
818 this->value.b[i] = value->value.b[0];
821 assert(!"Should not get here.");
828 if (type->is_matrix() && value->type->is_matrix()) {
829 assert(value->next->is_tail_sentinel());
831 /* From section 5.4.2 of the GLSL 1.20 spec:
832 * "If a matrix is constructed from a matrix, then each component
833 * (column i, row j) in the result that has a corresponding component
834 * (column i, row j) in the argument will be initialized from there."
836 unsigned cols = MIN2(type->matrix_columns, value->type->matrix_columns);
837 unsigned rows = MIN2(type->vector_elements, value->type->vector_elements);
838 for (unsigned i = 0; i < cols; i++) {
839 for (unsigned j = 0; j < rows; j++) {
840 const unsigned src = i * value->type->vector_elements + j;
841 const unsigned dst = i * type->vector_elements + j;
842 this->value.f[dst] = value->value.f[src];
846 /* "All other components will be initialized to the identity matrix." */
847 for (unsigned i = cols; i < type->matrix_columns; i++)
848 this->value.f[i * type->vector_elements + i] = 1.0;
853 /* Use each component from each entry in the value_list to initialize one
854 * component of the constant being constructed.
858 assert(value->as_constant() != NULL);
859 assert(!value->is_tail_sentinel());
861 for (unsigned j = 0; j < value->type->components(); j++) {
862 switch (type->base_type) {
864 this->value.u[i] = value->get_uint_component(j);
867 this->value.i[i] = value->get_int_component(j);
869 case GLSL_TYPE_FLOAT:
870 this->value.f[i] = value->get_float_component(j);
873 this->value.b[i] = value->get_bool_component(j);
875 case GLSL_TYPE_DOUBLE:
876 this->value.d[i] = value->get_double_component(j);
878 case GLSL_TYPE_UINT64:
879 this->value.u64[i] = value->get_uint64_component(j);
881 case GLSL_TYPE_INT64:
882 this->value.i64[i] = value->get_int64_component(j);
885 /* FINISHME: What to do? Exceptions are not the answer.
891 if (i >= type->components())
895 if (i >= type->components())
896 break; /* avoid downcasting a list sentinel */
897 value = (ir_constant *) value->next;
902 ir_constant::zero(void *mem_ctx, const glsl_type *type)
904 assert(type->is_scalar() || type->is_vector() || type->is_matrix()
905 || type->is_record() || type->is_array());
907 ir_constant *c = new(mem_ctx) ir_constant;
909 memset(&c->value, 0, sizeof(c->value));
911 if (type->is_array()) {
912 c->array_elements = ralloc_array(c, ir_constant *, type->length);
914 for (unsigned i = 0; i < type->length; i++)
915 c->array_elements[i] = ir_constant::zero(c, type->fields.array);
918 if (type->is_record()) {
919 for (unsigned i = 0; i < type->length; i++) {
920 ir_constant *comp = ir_constant::zero(mem_ctx, type->fields.structure[i].type);
921 c->components.push_tail(comp);
929 ir_constant::get_bool_component(unsigned i) const
931 switch (this->type->base_type) {
932 case GLSL_TYPE_UINT: return this->value.u[i] != 0;
933 case GLSL_TYPE_INT: return this->value.i[i] != 0;
934 case GLSL_TYPE_FLOAT: return ((int)this->value.f[i]) != 0;
935 case GLSL_TYPE_BOOL: return this->value.b[i];
936 case GLSL_TYPE_DOUBLE: return this->value.d[i] != 0.0;
937 case GLSL_TYPE_UINT64: return this->value.u64[i] != 0;
938 case GLSL_TYPE_INT64: return this->value.i64[i] != 0;
939 default: assert(!"Should not get here."); break;
942 /* Must return something to make the compiler happy. This is clearly an
949 ir_constant::get_float_component(unsigned i) const
951 switch (this->type->base_type) {
952 case GLSL_TYPE_UINT: return (float) this->value.u[i];
953 case GLSL_TYPE_INT: return (float) this->value.i[i];
954 case GLSL_TYPE_FLOAT: return this->value.f[i];
955 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0f : 0.0f;
956 case GLSL_TYPE_DOUBLE: return (float) this->value.d[i];
957 case GLSL_TYPE_UINT64: return (float) this->value.u64[i];
958 case GLSL_TYPE_INT64: return (float) this->value.i64[i];
959 default: assert(!"Should not get here."); break;
962 /* Must return something to make the compiler happy. This is clearly an
969 ir_constant::get_double_component(unsigned i) const
971 switch (this->type->base_type) {
972 case GLSL_TYPE_UINT: return (double) this->value.u[i];
973 case GLSL_TYPE_INT: return (double) this->value.i[i];
974 case GLSL_TYPE_FLOAT: return (double) this->value.f[i];
975 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1.0 : 0.0;
976 case GLSL_TYPE_DOUBLE: return this->value.d[i];
977 case GLSL_TYPE_UINT64: return (double) this->value.u64[i];
978 case GLSL_TYPE_INT64: return (double) this->value.i64[i];
979 default: assert(!"Should not get here."); break;
982 /* Must return something to make the compiler happy. This is clearly an
989 ir_constant::get_int_component(unsigned i) const
991 switch (this->type->base_type) {
992 case GLSL_TYPE_UINT: return this->value.u[i];
993 case GLSL_TYPE_INT: return this->value.i[i];
994 case GLSL_TYPE_FLOAT: return (int) this->value.f[i];
995 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
996 case GLSL_TYPE_DOUBLE: return (int) this->value.d[i];
997 case GLSL_TYPE_UINT64: return (int) this->value.u64[i];
998 case GLSL_TYPE_INT64: return (int) this->value.i64[i];
999 default: assert(!"Should not get here."); break;
1002 /* Must return something to make the compiler happy. This is clearly an
1009 ir_constant::get_uint_component(unsigned i) const
1011 switch (this->type->base_type) {
1012 case GLSL_TYPE_UINT: return this->value.u[i];
1013 case GLSL_TYPE_INT: return this->value.i[i];
1014 case GLSL_TYPE_FLOAT: return (unsigned) this->value.f[i];
1015 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1016 case GLSL_TYPE_DOUBLE: return (unsigned) this->value.d[i];
1017 case GLSL_TYPE_UINT64: return (unsigned) this->value.u64[i];
1018 case GLSL_TYPE_INT64: return (unsigned) this->value.i64[i];
1019 default: assert(!"Should not get here."); break;
1022 /* Must return something to make the compiler happy. This is clearly an
1029 ir_constant::get_int64_component(unsigned i) const
1031 switch (this->type->base_type) {
1032 case GLSL_TYPE_UINT: return this->value.u[i];
1033 case GLSL_TYPE_INT: return this->value.i[i];
1034 case GLSL_TYPE_FLOAT: return (int64_t) this->value.f[i];
1035 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1036 case GLSL_TYPE_DOUBLE: return (int64_t) this->value.d[i];
1037 case GLSL_TYPE_UINT64: return (int64_t) this->value.u64[i];
1038 case GLSL_TYPE_INT64: return this->value.i64[i];
1039 default: assert(!"Should not get here."); break;
1042 /* Must return something to make the compiler happy. This is clearly an
1049 ir_constant::get_uint64_component(unsigned i) const
1051 switch (this->type->base_type) {
1052 case GLSL_TYPE_UINT: return this->value.u[i];
1053 case GLSL_TYPE_INT: return this->value.i[i];
1054 case GLSL_TYPE_FLOAT: return (uint64_t) this->value.f[i];
1055 case GLSL_TYPE_BOOL: return this->value.b[i] ? 1 : 0;
1056 case GLSL_TYPE_DOUBLE: return (uint64_t) this->value.d[i];
1057 case GLSL_TYPE_UINT64: return this->value.u64[i];
1058 case GLSL_TYPE_INT64: return (uint64_t) this->value.i64[i];
1059 default: assert(!"Should not get here."); break;
1062 /* Must return something to make the compiler happy. This is clearly an
1069 ir_constant::get_array_element(unsigned i) const
1071 assert(this->type->is_array());
1073 /* From page 35 (page 41 of the PDF) of the GLSL 1.20 spec:
1075 * "Behavior is undefined if a shader subscripts an array with an index
1076 * less than 0 or greater than or equal to the size the array was
1079 * Most out-of-bounds accesses are removed before things could get this far.
1080 * There are cases where non-constant array index values can get constant
1085 else if (i >= this->type->length)
1086 i = this->type->length - 1;
1088 return array_elements[i];
1092 ir_constant::get_record_field(const char *name)
1094 int idx = this->type->field_index(name);
1099 if (this->components.is_empty())
1102 exec_node *node = this->components.get_head_raw();
1103 for (int i = 0; i < idx; i++) {
1106 /* If the end of the list is encountered before the element matching the
1107 * requested field is found, return NULL.
1109 if (node->is_tail_sentinel())
1113 return (ir_constant *) node;
1117 ir_constant::copy_offset(ir_constant *src, int offset)
1119 switch (this->type->base_type) {
1120 case GLSL_TYPE_UINT:
1122 case GLSL_TYPE_FLOAT:
1123 case GLSL_TYPE_DOUBLE:
1124 case GLSL_TYPE_UINT64:
1125 case GLSL_TYPE_INT64:
1126 case GLSL_TYPE_BOOL: {
1127 unsigned int size = src->type->components();
1128 assert (size <= this->type->components() - offset);
1129 for (unsigned int i=0; i<size; i++) {
1130 switch (this->type->base_type) {
1131 case GLSL_TYPE_UINT:
1132 value.u[i+offset] = src->get_uint_component(i);
1135 value.i[i+offset] = src->get_int_component(i);
1137 case GLSL_TYPE_FLOAT:
1138 value.f[i+offset] = src->get_float_component(i);
1140 case GLSL_TYPE_BOOL:
1141 value.b[i+offset] = src->get_bool_component(i);
1143 case GLSL_TYPE_DOUBLE:
1144 value.d[i+offset] = src->get_double_component(i);
1146 case GLSL_TYPE_UINT64:
1147 value.u64[i+offset] = src->get_uint64_component(i);
1149 case GLSL_TYPE_INT64:
1150 value.i64[i+offset] = src->get_int64_component(i);
1152 default: // Shut up the compiler
1159 case GLSL_TYPE_STRUCT: {
1160 assert (src->type == this->type);
1161 this->components.make_empty();
1162 foreach_in_list(ir_constant, orig, &src->components) {
1163 this->components.push_tail(orig->clone(this, NULL));
1168 case GLSL_TYPE_ARRAY: {
1169 assert (src->type == this->type);
1170 for (unsigned i = 0; i < this->type->length; i++) {
1171 this->array_elements[i] = src->array_elements[i]->clone(this, NULL);
1177 assert(!"Should not get here.");
1183 ir_constant::copy_masked_offset(ir_constant *src, int offset, unsigned int mask)
1185 assert (!type->is_array() && !type->is_record());
1187 if (!type->is_vector() && !type->is_matrix()) {
1193 for (int i=0; i<4; i++) {
1194 if (mask & (1 << i)) {
1195 switch (this->type->base_type) {
1196 case GLSL_TYPE_UINT:
1197 value.u[i+offset] = src->get_uint_component(id++);
1200 value.i[i+offset] = src->get_int_component(id++);
1202 case GLSL_TYPE_FLOAT:
1203 value.f[i+offset] = src->get_float_component(id++);
1205 case GLSL_TYPE_BOOL:
1206 value.b[i+offset] = src->get_bool_component(id++);
1208 case GLSL_TYPE_DOUBLE:
1209 value.d[i+offset] = src->get_double_component(id++);
1211 case GLSL_TYPE_UINT64:
1212 value.u64[i+offset] = src->get_uint64_component(id++);
1214 case GLSL_TYPE_INT64:
1215 value.i64[i+offset] = src->get_int64_component(id++);
1218 assert(!"Should not get here.");
1226 ir_constant::has_value(const ir_constant *c) const
1228 if (this->type != c->type)
1231 if (this->type->is_array()) {
1232 for (unsigned i = 0; i < this->type->length; i++) {
1233 if (!this->array_elements[i]->has_value(c->array_elements[i]))
1239 if (this->type->is_record()) {
1240 const exec_node *a_node = this->components.get_head_raw();
1241 const exec_node *b_node = c->components.get_head_raw();
1243 while (!a_node->is_tail_sentinel()) {
1244 assert(!b_node->is_tail_sentinel());
1246 const ir_constant *const a_field = (ir_constant *) a_node;
1247 const ir_constant *const b_field = (ir_constant *) b_node;
1249 if (!a_field->has_value(b_field))
1252 a_node = a_node->next;
1253 b_node = b_node->next;
1259 for (unsigned i = 0; i < this->type->components(); i++) {
1260 switch (this->type->base_type) {
1261 case GLSL_TYPE_UINT:
1262 if (this->value.u[i] != c->value.u[i])
1266 if (this->value.i[i] != c->value.i[i])
1269 case GLSL_TYPE_FLOAT:
1270 if (this->value.f[i] != c->value.f[i])
1273 case GLSL_TYPE_BOOL:
1274 if (this->value.b[i] != c->value.b[i])
1277 case GLSL_TYPE_DOUBLE:
1278 if (this->value.d[i] != c->value.d[i])
1281 case GLSL_TYPE_UINT64:
1282 if (this->value.u64[i] != c->value.u64[i])
1285 case GLSL_TYPE_INT64:
1286 if (this->value.i64[i] != c->value.i64[i])
1290 assert(!"Should not get here.");
1299 ir_constant::is_value(float f, int i) const
1301 if (!this->type->is_scalar() && !this->type->is_vector())
1304 /* Only accept boolean values for 0/1. */
1305 if (int(bool(i)) != i && this->type->is_boolean())
1308 for (unsigned c = 0; c < this->type->vector_elements; c++) {
1309 switch (this->type->base_type) {
1310 case GLSL_TYPE_FLOAT:
1311 if (this->value.f[c] != f)
1315 if (this->value.i[c] != i)
1318 case GLSL_TYPE_UINT:
1319 if (this->value.u[c] != unsigned(i))
1322 case GLSL_TYPE_BOOL:
1323 if (this->value.b[c] != bool(i))
1326 case GLSL_TYPE_DOUBLE:
1327 if (this->value.d[c] != double(f))
1330 case GLSL_TYPE_UINT64:
1331 if (this->value.u64[c] != uint64_t(i))
1334 case GLSL_TYPE_INT64:
1335 if (this->value.i64[c] != i)
1339 /* The only other base types are structures, arrays, and samplers.
1340 * Samplers cannot be constants, and the others should have been
1341 * filtered out above.
1343 assert(!"Should not get here.");
1352 ir_constant::is_zero() const
1354 return is_value(0.0, 0);
1358 ir_constant::is_one() const
1360 return is_value(1.0, 1);
1364 ir_constant::is_negative_one() const
1366 return is_value(-1.0, -1);
1370 ir_constant::is_uint16_constant() const
1372 if (!type->is_integer())
1375 return value.u[0] < (1 << 16);
1379 : ir_instruction(ir_type_loop)
1384 ir_dereference_variable::ir_dereference_variable(ir_variable *var)
1385 : ir_dereference(ir_type_dereference_variable)
1387 assert(var != NULL);
1390 this->type = var->type;
1394 ir_dereference_array::ir_dereference_array(ir_rvalue *value,
1395 ir_rvalue *array_index)
1396 : ir_dereference(ir_type_dereference_array)
1398 this->array_index = array_index;
1399 this->set_array(value);
1403 ir_dereference_array::ir_dereference_array(ir_variable *var,
1404 ir_rvalue *array_index)
1405 : ir_dereference(ir_type_dereference_array)
1407 void *ctx = ralloc_parent(var);
1409 this->array_index = array_index;
1410 this->set_array(new(ctx) ir_dereference_variable(var));
1415 ir_dereference_array::set_array(ir_rvalue *value)
1417 assert(value != NULL);
1419 this->array = value;
1421 const glsl_type *const vt = this->array->type;
1423 if (vt->is_array()) {
1424 type = vt->fields.array;
1425 } else if (vt->is_matrix()) {
1426 type = vt->column_type();
1427 } else if (vt->is_vector()) {
1428 type = vt->get_base_type();
1433 ir_dereference_record::ir_dereference_record(ir_rvalue *value,
1435 : ir_dereference(ir_type_dereference_record)
1437 assert(value != NULL);
1439 this->record = value;
1440 this->field = ralloc_strdup(this, field);
1441 this->type = this->record->type->field_type(field);
1445 ir_dereference_record::ir_dereference_record(ir_variable *var,
1447 : ir_dereference(ir_type_dereference_record)
1449 void *ctx = ralloc_parent(var);
1451 this->record = new(ctx) ir_dereference_variable(var);
1452 this->field = ralloc_strdup(this, field);
1453 this->type = this->record->type->field_type(field);
1457 ir_dereference::is_lvalue() const
1459 ir_variable *var = this->variable_referenced();
1461 /* Every l-value derference chain eventually ends in a variable.
1463 if ((var == NULL) || var->data.read_only)
1466 /* From section 4.1.7 of the GLSL 4.40 spec:
1468 * "Opaque variables cannot be treated as l-values; hence cannot
1469 * be used as out or inout function parameters, nor can they be
1472 if (this->type->contains_opaque())
1479 static const char * const tex_opcode_strs[] = { "tex", "txb", "txl", "txd", "txf", "txf_ms", "txs", "lod", "tg4", "query_levels", "texture_samples", "samples_identical" };
1481 const char *ir_texture::opcode_string()
1483 assert((unsigned int) op < ARRAY_SIZE(tex_opcode_strs));
1484 return tex_opcode_strs[op];
1488 ir_texture::get_opcode(const char *str)
1490 const int count = sizeof(tex_opcode_strs) / sizeof(tex_opcode_strs[0]);
1491 for (int op = 0; op < count; op++) {
1492 if (strcmp(str, tex_opcode_strs[op]) == 0)
1493 return (ir_texture_opcode) op;
1495 return (ir_texture_opcode) -1;
1500 ir_texture::set_sampler(ir_dereference *sampler, const glsl_type *type)
1502 assert(sampler != NULL);
1503 assert(type != NULL);
1504 this->sampler = sampler;
1507 if (this->op == ir_txs || this->op == ir_query_levels ||
1508 this->op == ir_texture_samples) {
1509 assert(type->base_type == GLSL_TYPE_INT);
1510 } else if (this->op == ir_lod) {
1511 assert(type->vector_elements == 2);
1512 assert(type->is_float());
1513 } else if (this->op == ir_samples_identical) {
1514 assert(type == glsl_type::bool_type);
1515 assert(sampler->type->is_sampler());
1516 assert(sampler->type->sampler_dimensionality == GLSL_SAMPLER_DIM_MS);
1518 assert(sampler->type->sampled_type == (int) type->base_type);
1519 if (sampler->type->sampler_shadow)
1520 assert(type->vector_elements == 4 || type->vector_elements == 1);
1522 assert(type->vector_elements == 4);
1528 ir_swizzle::init_mask(const unsigned *comp, unsigned count)
1530 assert((count >= 1) && (count <= 4));
1532 memset(&this->mask, 0, sizeof(this->mask));
1533 this->mask.num_components = count;
1535 unsigned dup_mask = 0;
1538 assert(comp[3] <= 3);
1539 dup_mask |= (1U << comp[3])
1540 & ((1U << comp[0]) | (1U << comp[1]) | (1U << comp[2]));
1541 this->mask.w = comp[3];
1544 assert(comp[2] <= 3);
1545 dup_mask |= (1U << comp[2])
1546 & ((1U << comp[0]) | (1U << comp[1]));
1547 this->mask.z = comp[2];
1550 assert(comp[1] <= 3);
1551 dup_mask |= (1U << comp[1])
1552 & ((1U << comp[0]));
1553 this->mask.y = comp[1];
1556 assert(comp[0] <= 3);
1557 this->mask.x = comp[0];
1560 this->mask.has_duplicates = dup_mask != 0;
1562 /* Based on the number of elements in the swizzle and the base type
1563 * (i.e., float, int, unsigned, or bool) of the vector being swizzled,
1564 * generate the type of the resulting value.
1566 type = glsl_type::get_instance(val->type->base_type, mask.num_components, 1);
1569 ir_swizzle::ir_swizzle(ir_rvalue *val, unsigned x, unsigned y, unsigned z,
1570 unsigned w, unsigned count)
1571 : ir_rvalue(ir_type_swizzle), val(val)
1573 const unsigned components[4] = { x, y, z, w };
1574 this->init_mask(components, count);
1577 ir_swizzle::ir_swizzle(ir_rvalue *val, const unsigned *comp,
1579 : ir_rvalue(ir_type_swizzle), val(val)
1581 this->init_mask(comp, count);
1584 ir_swizzle::ir_swizzle(ir_rvalue *val, ir_swizzle_mask mask)
1585 : ir_rvalue(ir_type_swizzle)
1589 this->type = glsl_type::get_instance(val->type->base_type,
1590 mask.num_components, 1);
1599 ir_swizzle::create(ir_rvalue *val, const char *str, unsigned vector_length)
1601 void *ctx = ralloc_parent(val);
1603 /* For each possible swizzle character, this table encodes the value in
1604 * \c idx_map that represents the 0th element of the vector. For invalid
1605 * swizzle characters (e.g., 'k'), a special value is used that will allow
1606 * detection of errors.
1608 static const unsigned char base_idx[26] = {
1609 /* a b c d e f g h i j k l m */
1610 R, R, I, I, I, I, R, I, I, I, I, I, I,
1611 /* n o p q r s t u v w x y z */
1612 I, I, S, S, R, S, S, I, I, X, X, X, X
1615 /* Each valid swizzle character has an entry in the previous table. This
1616 * table encodes the base index encoded in the previous table plus the actual
1617 * index of the swizzle character. When processing swizzles, the first
1618 * character in the string is indexed in the previous table. Each character
1619 * in the string is indexed in this table, and the value found there has the
1620 * value form the first table subtracted. The result must be on the range
1623 * For example, the string "wzyx" will get X from the first table. Each of
1624 * the charcaters will get X+3, X+2, X+1, and X+0 from this table. After
1625 * subtraction, the swizzle values are { 3, 2, 1, 0 }.
1627 * The string "wzrg" will get X from the first table. Each of the characters
1628 * will get X+3, X+2, R+0, and R+1 from this table. After subtraction, the
1629 * swizzle values are { 3, 2, 4, 5 }. Since 4 and 5 are outside the range
1630 * [0,3], the error is detected.
1632 static const unsigned char idx_map[26] = {
1633 /* a b c d e f g h i j k l m */
1634 R+3, R+2, 0, 0, 0, 0, R+1, 0, 0, 0, 0, 0, 0,
1635 /* n o p q r s t u v w x y z */
1636 0, 0, S+2, S+3, R+0, S+0, S+1, 0, 0, X+3, X+0, X+1, X+2
1639 int swiz_idx[4] = { 0, 0, 0, 0 };
1643 /* Validate the first character in the swizzle string and look up the base
1644 * index value as described above.
1646 if ((str[0] < 'a') || (str[0] > 'z'))
1649 const unsigned base = base_idx[str[0] - 'a'];
1652 for (i = 0; (i < 4) && (str[i] != '\0'); i++) {
1653 /* Validate the next character, and, as described above, convert it to a
1656 if ((str[i] < 'a') || (str[i] > 'z'))
1659 swiz_idx[i] = idx_map[str[i] - 'a'] - base;
1660 if ((swiz_idx[i] < 0) || (swiz_idx[i] >= (int) vector_length))
1667 return new(ctx) ir_swizzle(val, swiz_idx[0], swiz_idx[1], swiz_idx[2],
1677 ir_swizzle::variable_referenced() const
1679 return this->val->variable_referenced();
1683 bool ir_variable::temporaries_allocate_names = false;
1685 const char ir_variable::tmp_name[] = "compiler_temp";
1687 ir_variable::ir_variable(const struct glsl_type *type, const char *name,
1688 ir_variable_mode mode)
1689 : ir_instruction(ir_type_variable)
1693 if (mode == ir_var_temporary && !ir_variable::temporaries_allocate_names)
1696 /* The ir_variable clone method may call this constructor with name set to
1700 || mode == ir_var_temporary
1701 || mode == ir_var_function_in
1702 || mode == ir_var_function_out
1703 || mode == ir_var_function_inout);
1704 assert(name != ir_variable::tmp_name
1705 || mode == ir_var_temporary);
1706 if (mode == ir_var_temporary
1707 && (name == NULL || name == ir_variable::tmp_name)) {
1708 this->name = ir_variable::tmp_name;
1709 } else if (name == NULL ||
1710 strlen(name) < ARRAY_SIZE(this->name_storage)) {
1711 strcpy(this->name_storage, name ? name : "");
1712 this->name = this->name_storage;
1714 this->name = ralloc_strdup(this, name);
1717 this->u.max_ifc_array_access = NULL;
1719 this->data.explicit_location = false;
1720 this->data.has_initializer = false;
1721 this->data.location = -1;
1722 this->data.location_frac = 0;
1723 this->data.binding = 0;
1724 this->data.warn_extension_index = 0;
1725 this->constant_value = NULL;
1726 this->constant_initializer = NULL;
1727 this->data.origin_upper_left = false;
1728 this->data.pixel_center_integer = false;
1729 this->data.depth_layout = ir_depth_layout_none;
1730 this->data.used = false;
1731 this->data.always_active_io = false;
1732 this->data.read_only = false;
1733 this->data.centroid = false;
1734 this->data.sample = false;
1735 this->data.patch = false;
1736 this->data.invariant = false;
1737 this->data.how_declared = ir_var_declared_normally;
1738 this->data.mode = mode;
1739 this->data.interpolation = INTERP_MODE_NONE;
1740 this->data.max_array_access = -1;
1741 this->data.offset = 0;
1742 this->data.precision = GLSL_PRECISION_NONE;
1743 this->data.image_read_only = false;
1744 this->data.image_write_only = false;
1745 this->data.image_coherent = false;
1746 this->data.image_volatile = false;
1747 this->data.image_restrict = false;
1748 this->data.from_ssbo_unsized_array = false;
1749 this->data.fb_fetch_output = false;
1752 if (type->is_sampler())
1753 this->data.read_only = true;
1755 if (type->is_interface())
1756 this->init_interface_type(type);
1757 else if (type->without_array()->is_interface())
1758 this->init_interface_type(type->without_array());
1764 interpolation_string(unsigned interpolation)
1766 switch (interpolation) {
1767 case INTERP_MODE_NONE: return "no";
1768 case INTERP_MODE_SMOOTH: return "smooth";
1769 case INTERP_MODE_FLAT: return "flat";
1770 case INTERP_MODE_NOPERSPECTIVE: return "noperspective";
1773 assert(!"Should not get here.");
1777 const char *const ir_variable::warn_extension_table[] = {
1779 "GL_ARB_shader_stencil_export",
1780 "GL_AMD_shader_stencil_export",
1784 ir_variable::enable_extension_warning(const char *extension)
1786 for (unsigned i = 0; i < ARRAY_SIZE(warn_extension_table); i++) {
1787 if (strcmp(warn_extension_table[i], extension) == 0) {
1788 this->data.warn_extension_index = i;
1793 assert(!"Should not get here.");
1794 this->data.warn_extension_index = 0;
1798 ir_variable::get_extension_warning() const
1800 return this->data.warn_extension_index == 0
1801 ? NULL : warn_extension_table[this->data.warn_extension_index];
1804 ir_function_signature::ir_function_signature(const glsl_type *return_type,
1805 builtin_available_predicate b)
1806 : ir_instruction(ir_type_function_signature),
1807 return_type(return_type), is_defined(false),
1808 intrinsic_id(ir_intrinsic_invalid), builtin_avail(b), _function(NULL)
1810 this->origin = NULL;
1815 ir_function_signature::is_builtin() const
1817 return builtin_avail != NULL;
1822 ir_function_signature::is_builtin_available(const _mesa_glsl_parse_state *state) const
1824 /* We can't call the predicate without a state pointer, so just say that
1825 * the signature is available. At compile time, we need the filtering,
1826 * but also receive a valid state pointer. At link time, we're resolving
1827 * imported built-in prototypes to their definitions, which will always
1828 * be an exact match. So we can skip the filtering.
1833 assert(builtin_avail != NULL);
1834 return builtin_avail(state);
1839 modes_match(unsigned a, unsigned b)
1844 /* Accept "in" vs. "const in" */
1845 if ((a == ir_var_const_in && b == ir_var_function_in) ||
1846 (b == ir_var_const_in && a == ir_var_function_in))
1854 ir_function_signature::qualifiers_match(exec_list *params)
1856 /* check that the qualifiers match. */
1857 foreach_two_lists(a_node, &this->parameters, b_node, params) {
1858 ir_variable *a = (ir_variable *) a_node;
1859 ir_variable *b = (ir_variable *) b_node;
1861 if (a->data.read_only != b->data.read_only ||
1862 !modes_match(a->data.mode, b->data.mode) ||
1863 a->data.interpolation != b->data.interpolation ||
1864 a->data.centroid != b->data.centroid ||
1865 a->data.sample != b->data.sample ||
1866 a->data.patch != b->data.patch ||
1867 a->data.image_read_only != b->data.image_read_only ||
1868 a->data.image_write_only != b->data.image_write_only ||
1869 a->data.image_coherent != b->data.image_coherent ||
1870 a->data.image_volatile != b->data.image_volatile ||
1871 a->data.image_restrict != b->data.image_restrict) {
1873 /* parameter a's qualifiers don't match */
1882 ir_function_signature::replace_parameters(exec_list *new_params)
1884 /* Destroy all of the previous parameter information. If the previous
1885 * parameter information comes from the function prototype, it may either
1886 * specify incorrect parameter names or not have names at all.
1888 new_params->move_nodes_to(¶meters);
1892 ir_function::ir_function(const char *name)
1893 : ir_instruction(ir_type_function)
1895 this->subroutine_index = -1;
1896 this->name = ralloc_strdup(this, name);
1901 ir_function::has_user_signature()
1903 foreach_in_list(ir_function_signature, sig, &this->signatures) {
1904 if (!sig->is_builtin())
1912 ir_rvalue::error_value(void *mem_ctx)
1914 ir_rvalue *v = new(mem_ctx) ir_rvalue(ir_type_unset);
1916 v->type = glsl_type::error_type;
1922 visit_exec_list(exec_list *list, ir_visitor *visitor)
1924 foreach_in_list_safe(ir_instruction, node, list) {
1925 node->accept(visitor);
1931 steal_memory(ir_instruction *ir, void *new_ctx)
1933 ir_variable *var = ir->as_variable();
1934 ir_function *fn = ir->as_function();
1935 ir_constant *constant = ir->as_constant();
1936 if (var != NULL && var->constant_value != NULL)
1937 steal_memory(var->constant_value, ir);
1939 if (var != NULL && var->constant_initializer != NULL)
1940 steal_memory(var->constant_initializer, ir);
1942 if (fn != NULL && fn->subroutine_types)
1943 ralloc_steal(new_ctx, fn->subroutine_types);
1945 /* The components of aggregate constants are not visited by the normal
1946 * visitor, so steal their values by hand.
1948 if (constant != NULL) {
1949 if (constant->type->is_record()) {
1950 foreach_in_list(ir_constant, field, &constant->components) {
1951 steal_memory(field, ir);
1953 } else if (constant->type->is_array()) {
1954 for (unsigned int i = 0; i < constant->type->length; i++) {
1955 steal_memory(constant->array_elements[i], ir);
1960 ralloc_steal(new_ctx, ir);
1965 reparent_ir(exec_list *list, void *mem_ctx)
1967 foreach_in_list(ir_instruction, node, list) {
1968 visit_tree(node, steal_memory, mem_ctx);
1974 try_min_one(ir_rvalue *ir)
1976 ir_expression *expr = ir->as_expression();
1978 if (!expr || expr->operation != ir_binop_min)
1981 if (expr->operands[0]->is_one())
1982 return expr->operands[1];
1984 if (expr->operands[1]->is_one())
1985 return expr->operands[0];
1991 try_max_zero(ir_rvalue *ir)
1993 ir_expression *expr = ir->as_expression();
1995 if (!expr || expr->operation != ir_binop_max)
1998 if (expr->operands[0]->is_zero())
1999 return expr->operands[1];
2001 if (expr->operands[1]->is_zero())
2002 return expr->operands[0];
2008 ir_rvalue::as_rvalue_to_saturate()
2010 ir_expression *expr = this->as_expression();
2015 ir_rvalue *max_zero = try_max_zero(expr);
2017 return try_min_one(max_zero);
2019 ir_rvalue *min_one = try_min_one(expr);
2021 return try_max_zero(min_one);
2030 vertices_per_prim(GLenum prim)
2039 case GL_LINES_ADJACENCY:
2041 case GL_TRIANGLES_ADJACENCY:
2044 assert(!"Bad primitive");
2050 * Generate a string describing the mode of a variable
2053 mode_string(const ir_variable *var)
2055 switch (var->data.mode) {
2057 return (var->data.read_only) ? "global constant" : "global variable";
2059 case ir_var_uniform:
2062 case ir_var_shader_storage:
2065 case ir_var_shader_in:
2066 return "shader input";
2068 case ir_var_shader_out:
2069 return "shader output";
2071 case ir_var_function_in:
2072 case ir_var_const_in:
2073 return "function input";
2075 case ir_var_function_out:
2076 return "function output";
2078 case ir_var_function_inout:
2079 return "function inout";
2081 case ir_var_system_value:
2082 return "shader input";
2084 case ir_var_temporary:
2085 return "compiler temporary";
2087 case ir_var_mode_count:
2091 assert(!"Should not get here.");
2092 return "invalid variable";