2 * Copyright © 2014 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
28 #include "float64_glsl.h"
29 #include "glsl_to_nir.h"
30 #include "ir_visitor.h"
31 #include "ir_hierarchical_visitor.h"
33 #include "ir_optimization.h"
35 #include "compiler/nir/nir_control_flow.h"
36 #include "compiler/nir/nir_builder.h"
37 #include "compiler/nir/nir_builtin_builder.h"
38 #include "compiler/nir/nir_deref.h"
39 #include "main/errors.h"
40 #include "main/imports.h"
41 #include "main/mtypes.h"
42 #include "main/shaderobj.h"
43 #include "util/u_math.h"
46 * pass to lower GLSL IR to NIR
48 * This will lower variable dereferences to loads/stores of corresponding
49 * variables in NIR - the variables will be converted to registers in a later
55 class nir_visitor
: public ir_visitor
58 nir_visitor(gl_context
*ctx
, nir_shader
*shader
);
61 virtual void visit(ir_variable
*);
62 virtual void visit(ir_function
*);
63 virtual void visit(ir_function_signature
*);
64 virtual void visit(ir_loop
*);
65 virtual void visit(ir_if
*);
66 virtual void visit(ir_discard
*);
67 virtual void visit(ir_demote
*);
68 virtual void visit(ir_loop_jump
*);
69 virtual void visit(ir_return
*);
70 virtual void visit(ir_call
*);
71 virtual void visit(ir_assignment
*);
72 virtual void visit(ir_emit_vertex
*);
73 virtual void visit(ir_end_primitive
*);
74 virtual void visit(ir_expression
*);
75 virtual void visit(ir_swizzle
*);
76 virtual void visit(ir_texture
*);
77 virtual void visit(ir_constant
*);
78 virtual void visit(ir_dereference_variable
*);
79 virtual void visit(ir_dereference_record
*);
80 virtual void visit(ir_dereference_array
*);
81 virtual void visit(ir_barrier
*);
83 void create_function(ir_function_signature
*ir
);
86 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
87 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
89 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
90 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
91 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
93 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
94 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
99 nir_function_impl
*impl
;
101 nir_ssa_def
*result
; /* result of the expression tree last visited */
103 nir_deref_instr
*evaluate_deref(ir_instruction
*ir
);
105 nir_constant
*constant_copy(ir_constant
*ir
, void *mem_ctx
);
107 /* most recent deref instruction created */
108 nir_deref_instr
*deref
;
110 /* whether the IR we're operating on is per-function or global */
113 ir_function_signature
*sig
;
115 /* map of ir_variable -> nir_variable */
116 struct hash_table
*var_table
;
118 /* map of ir_function_signature -> nir_function_overload */
119 struct hash_table
*overload_table
;
123 * This visitor runs before the main visitor, calling create_function() for
124 * each function so that the main visitor can resolve forward references in
128 class nir_function_visitor
: public ir_hierarchical_visitor
131 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
134 virtual ir_visitor_status
visit_enter(ir_function
*);
137 nir_visitor
*visitor
;
140 /* glsl_to_nir can only handle converting certain function paramaters
141 * to NIR. This visitor checks for parameters it can't currently handle.
143 class ir_function_param_visitor
: public ir_hierarchical_visitor
146 ir_function_param_visitor()
151 virtual ir_visitor_status
visit_enter(ir_function_signature
*ir
)
154 if (ir
->is_intrinsic())
155 return visit_continue
;
157 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
158 if (!param
->type
->is_vector() || !param
->type
->is_scalar()) {
163 if (param
->data
.mode
== ir_var_function_inout
) {
169 return visit_continue
;
175 } /* end of anonymous namespace */
179 has_unsupported_function_param(exec_list
*ir
)
181 ir_function_param_visitor visitor
;
182 visit_list_elements(&visitor
, ir
);
183 return visitor
.unsupported
;
187 glsl_to_nir(struct gl_context
*ctx
,
188 const struct gl_shader_program
*shader_prog
,
189 gl_shader_stage stage
,
190 const nir_shader_compiler_options
*options
)
192 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
194 const struct gl_shader_compiler_options
*gl_options
=
195 &ctx
->Const
.ShaderCompilerOptions
[stage
];
197 /* glsl_to_nir can only handle converting certain function paramaters
198 * to NIR. If we find something we can't handle then we get the GLSL IR
199 * opts to remove it before we continue on.
201 * TODO: add missing glsl ir to nir support and remove this loop.
203 while (has_unsupported_function_param(sh
->ir
)) {
204 do_common_optimization(sh
->ir
, true, true, gl_options
,
205 ctx
->Const
.NativeIntegers
);
208 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
211 nir_visitor
v1(ctx
, shader
);
212 nir_function_visitor
v2(&v1
);
214 visit_exec_list(sh
->ir
, &v1
);
216 nir_validate_shader(shader
, "after glsl to nir, before function inline");
218 /* We have to lower away local constant initializers right before we
219 * inline functions. That way they get properly initialized at the top
220 * of the function and not at the top of its caller.
222 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
223 nir_lower_returns(shader
);
224 nir_inline_functions(shader
);
225 nir_opt_deref(shader
);
227 nir_validate_shader(shader
, "after function inlining and return lowering");
229 /* Now that we have inlined everything remove all of the functions except
232 foreach_list_typed_safe(nir_function
, function
, node
, &(shader
)->functions
){
233 if (strcmp("main", function
->name
) != 0) {
234 exec_node_remove(&function
->node
);
238 /* Remap the locations to slots so those requiring two slots will occupy
239 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
240 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
241 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
242 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
243 nir_remap_dual_slot_attributes(shader
, &sh
->Program
->DualSlotInputs
);
245 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
246 if (shader_prog
->Label
)
247 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
249 /* Check for transform feedback varyings specified via the API */
250 shader
->info
.has_transform_feedback_varyings
=
251 shader_prog
->TransformFeedback
.NumVarying
> 0;
253 /* Check for transform feedback varyings specified in the Shader */
254 if (shader_prog
->last_vert_prog
)
255 shader
->info
.has_transform_feedback_varyings
|=
256 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
258 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
) {
259 shader
->info
.fs
.pixel_center_integer
= sh
->Program
->info
.fs
.pixel_center_integer
;
260 shader
->info
.fs
.origin_upper_left
= sh
->Program
->info
.fs
.origin_upper_left
;
266 nir_visitor::nir_visitor(gl_context
*ctx
, nir_shader
*shader
)
268 this->supports_std430
= ctx
->Const
.UseSTD430AsDefaultPacking
;
269 this->shader
= shader
;
270 this->is_global
= true;
271 this->var_table
= _mesa_pointer_hash_table_create(NULL
);
272 this->overload_table
= _mesa_pointer_hash_table_create(NULL
);
277 memset(&this->b
, 0, sizeof(this->b
));
280 nir_visitor::~nir_visitor()
282 _mesa_hash_table_destroy(this->var_table
, NULL
);
283 _mesa_hash_table_destroy(this->overload_table
, NULL
);
287 nir_visitor::evaluate_deref(ir_instruction
*ir
)
294 nir_visitor::constant_copy(ir_constant
*ir
, void *mem_ctx
)
299 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
301 const unsigned rows
= ir
->type
->vector_elements
;
302 const unsigned cols
= ir
->type
->matrix_columns
;
305 ret
->num_elements
= 0;
306 switch (ir
->type
->base_type
) {
308 /* Only float base types can be matrices. */
311 for (unsigned r
= 0; r
< rows
; r
++)
312 ret
->values
[r
].u32
= ir
->value
.u
[r
];
317 /* Only float base types can be matrices. */
320 for (unsigned r
= 0; r
< rows
; r
++)
321 ret
->values
[r
].i32
= ir
->value
.i
[r
];
325 case GLSL_TYPE_FLOAT
:
326 case GLSL_TYPE_DOUBLE
:
328 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*, cols
);
329 ret
->num_elements
= cols
;
330 for (unsigned c
= 0; c
< cols
; c
++) {
331 nir_constant
*col_const
= rzalloc(mem_ctx
, nir_constant
);
332 col_const
->num_elements
= 0;
333 switch (ir
->type
->base_type
) {
334 case GLSL_TYPE_FLOAT
:
335 for (unsigned r
= 0; r
< rows
; r
++)
336 col_const
->values
[r
].f32
= ir
->value
.f
[c
* rows
+ r
];
339 case GLSL_TYPE_DOUBLE
:
340 for (unsigned r
= 0; r
< rows
; r
++)
341 col_const
->values
[r
].f64
= ir
->value
.d
[c
* rows
+ r
];
345 unreachable("Cannot get here from the first level switch");
347 ret
->elements
[c
] = col_const
;
350 switch (ir
->type
->base_type
) {
351 case GLSL_TYPE_FLOAT
:
352 for (unsigned r
= 0; r
< rows
; r
++)
353 ret
->values
[r
].f32
= ir
->value
.f
[r
];
356 case GLSL_TYPE_DOUBLE
:
357 for (unsigned r
= 0; r
< rows
; r
++)
358 ret
->values
[r
].f64
= ir
->value
.d
[r
];
362 unreachable("Cannot get here from the first level switch");
367 case GLSL_TYPE_UINT64
:
368 /* Only float base types can be matrices. */
371 for (unsigned r
= 0; r
< rows
; r
++)
372 ret
->values
[r
].u64
= ir
->value
.u64
[r
];
375 case GLSL_TYPE_INT64
:
376 /* Only float base types can be matrices. */
379 for (unsigned r
= 0; r
< rows
; r
++)
380 ret
->values
[r
].i64
= ir
->value
.i64
[r
];
384 /* Only float base types can be matrices. */
387 for (unsigned r
= 0; r
< rows
; r
++)
388 ret
->values
[r
].b
= ir
->value
.b
[r
];
392 case GLSL_TYPE_STRUCT
:
393 case GLSL_TYPE_ARRAY
:
394 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
396 ret
->num_elements
= ir
->type
->length
;
398 for (i
= 0; i
< ir
->type
->length
; i
++)
399 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
403 unreachable("not reached");
409 static const glsl_type
*
410 wrap_type_in_array(const glsl_type
*elem_type
, const glsl_type
*array_type
)
412 if (!array_type
->is_array())
415 elem_type
= wrap_type_in_array(elem_type
, array_type
->fields
.array
);
417 return glsl_type::get_array_instance(elem_type
, array_type
->length
);
421 nir_visitor::visit(ir_variable
*ir
)
423 /* TODO: In future we should switch to using the NIR lowering pass but for
424 * now just ignore these variables as GLSL IR should have lowered them.
425 * Anything remaining are just dead vars that weren't cleaned up.
427 if (ir
->data
.mode
== ir_var_shader_shared
)
430 /* FINISHME: inout parameters */
431 assert(ir
->data
.mode
!= ir_var_function_inout
);
433 if (ir
->data
.mode
== ir_var_function_out
)
436 nir_variable
*var
= rzalloc(shader
, nir_variable
);
437 var
->type
= ir
->type
;
438 var
->name
= ralloc_strdup(var
, ir
->name
);
440 var
->data
.always_active_io
= ir
->data
.always_active_io
;
441 var
->data
.read_only
= ir
->data
.read_only
;
442 var
->data
.centroid
= ir
->data
.centroid
;
443 var
->data
.sample
= ir
->data
.sample
;
444 var
->data
.patch
= ir
->data
.patch
;
445 var
->data
.invariant
= ir
->data
.invariant
;
446 var
->data
.location
= ir
->data
.location
;
447 var
->data
.stream
= ir
->data
.stream
;
448 var
->data
.compact
= false;
450 switch(ir
->data
.mode
) {
452 case ir_var_temporary
:
454 var
->data
.mode
= nir_var_shader_temp
;
456 var
->data
.mode
= nir_var_function_temp
;
459 case ir_var_function_in
:
460 case ir_var_const_in
:
461 var
->data
.mode
= nir_var_function_temp
;
464 case ir_var_shader_in
:
465 if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
466 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
467 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
468 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
469 var
->data
.mode
= nir_var_system_value
;
471 var
->data
.mode
= nir_var_shader_in
;
473 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
474 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
475 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
476 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
479 if (shader
->info
.stage
> MESA_SHADER_VERTEX
&&
480 ir
->data
.location
>= VARYING_SLOT_CLIP_DIST0
&&
481 ir
->data
.location
<= VARYING_SLOT_CULL_DIST1
) {
482 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
487 case ir_var_shader_out
:
488 var
->data
.mode
= nir_var_shader_out
;
489 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
490 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
491 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
492 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
495 if (shader
->info
.stage
<= MESA_SHADER_GEOMETRY
&&
496 ir
->data
.location
>= VARYING_SLOT_CLIP_DIST0
&&
497 ir
->data
.location
<= VARYING_SLOT_CULL_DIST1
) {
498 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
503 if (ir
->get_interface_type())
504 var
->data
.mode
= nir_var_mem_ubo
;
506 var
->data
.mode
= nir_var_uniform
;
509 case ir_var_shader_storage
:
510 var
->data
.mode
= nir_var_mem_ssbo
;
513 case ir_var_system_value
:
514 var
->data
.mode
= nir_var_system_value
;
518 unreachable("not reached");
521 unsigned image_access
= 0;
522 if (ir
->data
.memory_read_only
)
523 image_access
|= ACCESS_NON_WRITEABLE
;
524 if (ir
->data
.memory_write_only
)
525 image_access
|= ACCESS_NON_READABLE
;
526 if (ir
->data
.memory_coherent
)
527 image_access
|= ACCESS_COHERENT
;
528 if (ir
->data
.memory_volatile
)
529 image_access
|= ACCESS_VOLATILE
;
530 if (ir
->data
.memory_restrict
)
531 image_access
|= ACCESS_RESTRICT
;
533 /* For UBO and SSBO variables, we need explicit types */
534 if (var
->data
.mode
& (nir_var_mem_ubo
| nir_var_mem_ssbo
)) {
535 const glsl_type
*explicit_ifc_type
=
536 ir
->get_interface_type()->get_explicit_interface_type(supports_std430
);
538 if (ir
->type
->without_array()->is_interface()) {
539 /* If the type contains the interface, wrap the explicit type in the
540 * right number of arrays.
542 var
->type
= wrap_type_in_array(explicit_ifc_type
, ir
->type
);
544 /* Otherwise, this variable is one entry in the interface */
545 UNUSED
bool found
= false;
546 for (unsigned i
= 0; i
< explicit_ifc_type
->length
; i
++) {
547 const glsl_struct_field
*field
=
548 &explicit_ifc_type
->fields
.structure
[i
];
549 if (strcmp(ir
->name
, field
->name
) != 0)
552 var
->type
= field
->type
;
553 if (field
->memory_read_only
)
554 image_access
|= ACCESS_NON_WRITEABLE
;
555 if (field
->memory_write_only
)
556 image_access
|= ACCESS_NON_READABLE
;
557 if (field
->memory_coherent
)
558 image_access
|= ACCESS_COHERENT
;
559 if (field
->memory_volatile
)
560 image_access
|= ACCESS_VOLATILE
;
561 if (field
->memory_restrict
)
562 image_access
|= ACCESS_RESTRICT
;
571 var
->data
.interpolation
= ir
->data
.interpolation
;
572 var
->data
.location_frac
= ir
->data
.location_frac
;
574 switch (ir
->data
.depth_layout
) {
575 case ir_depth_layout_none
:
576 var
->data
.depth_layout
= nir_depth_layout_none
;
578 case ir_depth_layout_any
:
579 var
->data
.depth_layout
= nir_depth_layout_any
;
581 case ir_depth_layout_greater
:
582 var
->data
.depth_layout
= nir_depth_layout_greater
;
584 case ir_depth_layout_less
:
585 var
->data
.depth_layout
= nir_depth_layout_less
;
587 case ir_depth_layout_unchanged
:
588 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
591 unreachable("not reached");
594 var
->data
.index
= ir
->data
.index
;
595 var
->data
.descriptor_set
= 0;
596 var
->data
.binding
= ir
->data
.binding
;
597 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
598 var
->data
.bindless
= ir
->data
.bindless
;
599 var
->data
.offset
= ir
->data
.offset
;
601 var
->data
.image
.access
= (gl_access_qualifier
)image_access
;
602 var
->data
.image
.format
= ir
->data
.image_format
;
604 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
605 var
->data
.explicit_xfb_buffer
= ir
->data
.explicit_xfb_buffer
;
606 var
->data
.explicit_xfb_stride
= ir
->data
.explicit_xfb_stride
;
607 var
->data
.xfb_buffer
= ir
->data
.xfb_buffer
;
608 var
->data
.xfb_stride
= ir
->data
.xfb_stride
;
610 var
->num_state_slots
= ir
->get_num_state_slots();
611 if (var
->num_state_slots
> 0) {
612 var
->state_slots
= rzalloc_array(var
, nir_state_slot
,
613 var
->num_state_slots
);
615 ir_state_slot
*state_slots
= ir
->get_state_slots();
616 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
617 for (unsigned j
= 0; j
< 5; j
++)
618 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
619 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
622 var
->state_slots
= NULL
;
625 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
627 var
->interface_type
= ir
->get_interface_type();
629 if (var
->data
.mode
== nir_var_function_temp
)
630 nir_function_impl_add_variable(impl
, var
);
632 nir_shader_add_variable(shader
, var
);
634 _mesa_hash_table_insert(var_table
, ir
, var
);
638 nir_function_visitor::visit_enter(ir_function
*ir
)
640 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
641 visitor
->create_function(sig
);
643 return visit_continue_with_parent
;
647 nir_visitor::create_function(ir_function_signature
*ir
)
649 if (ir
->is_intrinsic())
652 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
653 if (strcmp(ir
->function_name(), "main") == 0)
654 func
->is_entrypoint
= true;
656 func
->num_params
= ir
->parameters
.length() +
657 (ir
->return_type
!= glsl_type::void_type
);
658 func
->params
= ralloc_array(shader
, nir_parameter
, func
->num_params
);
662 if (ir
->return_type
!= glsl_type::void_type
) {
663 /* The return value is a variable deref (basically an out parameter) */
664 func
->params
[np
].num_components
= 1;
665 func
->params
[np
].bit_size
= 32;
669 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
670 /* FINISHME: pass arrays, structs, etc by reference? */
671 assert(param
->type
->is_vector() || param
->type
->is_scalar());
673 if (param
->data
.mode
== ir_var_function_in
) {
674 func
->params
[np
].num_components
= param
->type
->vector_elements
;
675 func
->params
[np
].bit_size
= glsl_get_bit_size(param
->type
);
677 func
->params
[np
].num_components
= 1;
678 func
->params
[np
].bit_size
= 32;
682 assert(np
== func
->num_params
);
684 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
688 nir_visitor::visit(ir_function
*ir
)
690 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
695 nir_visitor::visit(ir_function_signature
*ir
)
697 if (ir
->is_intrinsic())
702 struct hash_entry
*entry
=
703 _mesa_hash_table_search(this->overload_table
, ir
);
706 nir_function
*func
= (nir_function
*) entry
->data
;
708 if (ir
->is_defined
) {
709 nir_function_impl
*impl
= nir_function_impl_create(func
);
712 this->is_global
= false;
714 nir_builder_init(&b
, impl
);
715 b
.cursor
= nir_after_cf_list(&impl
->body
);
717 unsigned i
= (ir
->return_type
!= glsl_type::void_type
) ? 1 : 0;
719 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
721 nir_local_variable_create(impl
, param
->type
, param
->name
);
723 if (param
->data
.mode
== ir_var_function_in
) {
724 nir_store_var(&b
, var
, nir_load_param(&b
, i
), ~0);
727 _mesa_hash_table_insert(var_table
, param
, var
);
731 visit_exec_list(&ir
->body
, this);
733 this->is_global
= true;
740 nir_visitor::visit(ir_loop
*ir
)
743 visit_exec_list(&ir
->body_instructions
, this);
744 nir_pop_loop(&b
, NULL
);
748 nir_visitor::visit(ir_if
*ir
)
750 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
751 visit_exec_list(&ir
->then_instructions
, this);
752 nir_push_else(&b
, NULL
);
753 visit_exec_list(&ir
->else_instructions
, this);
754 nir_pop_if(&b
, NULL
);
758 nir_visitor::visit(ir_discard
*ir
)
761 * discards aren't treated as control flow, because before we lower them
762 * they can appear anywhere in the shader and the stuff after them may still
763 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
764 * discards will be immediately followed by a return.
767 nir_intrinsic_instr
*discard
;
769 discard
= nir_intrinsic_instr_create(this->shader
,
770 nir_intrinsic_discard_if
);
772 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
774 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
777 nir_builder_instr_insert(&b
, &discard
->instr
);
781 nir_visitor::visit(ir_demote
*ir
)
783 nir_intrinsic_instr
*demote
=
784 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_demote
);
786 nir_builder_instr_insert(&b
, &demote
->instr
);
790 nir_visitor::visit(ir_emit_vertex
*ir
)
792 nir_intrinsic_instr
*instr
=
793 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
794 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
795 nir_builder_instr_insert(&b
, &instr
->instr
);
799 nir_visitor::visit(ir_end_primitive
*ir
)
801 nir_intrinsic_instr
*instr
=
802 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
803 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
804 nir_builder_instr_insert(&b
, &instr
->instr
);
808 nir_visitor::visit(ir_loop_jump
*ir
)
812 case ir_loop_jump::jump_break
:
813 type
= nir_jump_break
;
815 case ir_loop_jump::jump_continue
:
816 type
= nir_jump_continue
;
819 unreachable("not reached");
822 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
823 nir_builder_instr_insert(&b
, &instr
->instr
);
827 nir_visitor::visit(ir_return
*ir
)
829 if (ir
->value
!= NULL
) {
830 nir_deref_instr
*ret_deref
=
831 nir_build_deref_cast(&b
, nir_load_param(&b
, 0),
832 nir_var_function_temp
, ir
->value
->type
, 0);
834 nir_ssa_def
*val
= evaluate_rvalue(ir
->value
);
835 nir_store_deref(&b
, ret_deref
, val
, ~0);
838 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
839 nir_builder_instr_insert(&b
, &instr
->instr
);
843 intrinsic_set_std430_align(nir_intrinsic_instr
*intrin
, const glsl_type
*type
)
845 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
846 unsigned pow2_components
= util_next_power_of_two(type
->vector_elements
);
847 nir_intrinsic_set_align(intrin
, (bit_size
/ 8) * pow2_components
, 0);
850 /* Accumulate any qualifiers along the deref chain to get the actual
851 * load/store qualifier.
854 static enum gl_access_qualifier
855 deref_get_qualifier(nir_deref_instr
*deref
)
858 nir_deref_path_init(&path
, deref
, NULL
);
860 unsigned qualifiers
= path
.path
[0]->var
->data
.image
.access
;
862 const glsl_type
*parent_type
= path
.path
[0]->type
;
863 for (nir_deref_instr
**cur_ptr
= &path
.path
[1]; *cur_ptr
; cur_ptr
++) {
864 nir_deref_instr
*cur
= *cur_ptr
;
866 if (parent_type
->is_interface()) {
867 const struct glsl_struct_field
*field
=
868 &parent_type
->fields
.structure
[cur
->strct
.index
];
869 if (field
->memory_read_only
)
870 qualifiers
|= ACCESS_NON_WRITEABLE
;
871 if (field
->memory_write_only
)
872 qualifiers
|= ACCESS_NON_READABLE
;
873 if (field
->memory_coherent
)
874 qualifiers
|= ACCESS_COHERENT
;
875 if (field
->memory_volatile
)
876 qualifiers
|= ACCESS_VOLATILE
;
877 if (field
->memory_restrict
)
878 qualifiers
|= ACCESS_RESTRICT
;
881 parent_type
= cur
->type
;
884 nir_deref_path_finish(&path
);
886 return (gl_access_qualifier
) qualifiers
;
890 nir_visitor::visit(ir_call
*ir
)
892 if (ir
->callee
->is_intrinsic()) {
895 switch (ir
->callee
->intrinsic_id
) {
896 case ir_intrinsic_generic_atomic_add
:
897 op
= ir
->return_deref
->type
->is_integer_32_64()
898 ? nir_intrinsic_deref_atomic_add
: nir_intrinsic_deref_atomic_fadd
;
900 case ir_intrinsic_generic_atomic_and
:
901 op
= nir_intrinsic_deref_atomic_and
;
903 case ir_intrinsic_generic_atomic_or
:
904 op
= nir_intrinsic_deref_atomic_or
;
906 case ir_intrinsic_generic_atomic_xor
:
907 op
= nir_intrinsic_deref_atomic_xor
;
909 case ir_intrinsic_generic_atomic_min
:
910 assert(ir
->return_deref
);
911 if (ir
->return_deref
->type
== glsl_type::int_type
)
912 op
= nir_intrinsic_deref_atomic_imin
;
913 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
914 op
= nir_intrinsic_deref_atomic_umin
;
915 else if (ir
->return_deref
->type
== glsl_type::float_type
)
916 op
= nir_intrinsic_deref_atomic_fmin
;
918 unreachable("Invalid type");
920 case ir_intrinsic_generic_atomic_max
:
921 assert(ir
->return_deref
);
922 if (ir
->return_deref
->type
== glsl_type::int_type
)
923 op
= nir_intrinsic_deref_atomic_imax
;
924 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
925 op
= nir_intrinsic_deref_atomic_umax
;
926 else if (ir
->return_deref
->type
== glsl_type::float_type
)
927 op
= nir_intrinsic_deref_atomic_fmax
;
929 unreachable("Invalid type");
931 case ir_intrinsic_generic_atomic_exchange
:
932 op
= nir_intrinsic_deref_atomic_exchange
;
934 case ir_intrinsic_generic_atomic_comp_swap
:
935 op
= ir
->return_deref
->type
->is_integer_32_64()
936 ? nir_intrinsic_deref_atomic_comp_swap
937 : nir_intrinsic_deref_atomic_fcomp_swap
;
939 case ir_intrinsic_atomic_counter_read
:
940 op
= nir_intrinsic_atomic_counter_read_deref
;
942 case ir_intrinsic_atomic_counter_increment
:
943 op
= nir_intrinsic_atomic_counter_inc_deref
;
945 case ir_intrinsic_atomic_counter_predecrement
:
946 op
= nir_intrinsic_atomic_counter_pre_dec_deref
;
948 case ir_intrinsic_atomic_counter_add
:
949 op
= nir_intrinsic_atomic_counter_add_deref
;
951 case ir_intrinsic_atomic_counter_and
:
952 op
= nir_intrinsic_atomic_counter_and_deref
;
954 case ir_intrinsic_atomic_counter_or
:
955 op
= nir_intrinsic_atomic_counter_or_deref
;
957 case ir_intrinsic_atomic_counter_xor
:
958 op
= nir_intrinsic_atomic_counter_xor_deref
;
960 case ir_intrinsic_atomic_counter_min
:
961 op
= nir_intrinsic_atomic_counter_min_deref
;
963 case ir_intrinsic_atomic_counter_max
:
964 op
= nir_intrinsic_atomic_counter_max_deref
;
966 case ir_intrinsic_atomic_counter_exchange
:
967 op
= nir_intrinsic_atomic_counter_exchange_deref
;
969 case ir_intrinsic_atomic_counter_comp_swap
:
970 op
= nir_intrinsic_atomic_counter_comp_swap_deref
;
972 case ir_intrinsic_image_load
:
973 op
= nir_intrinsic_image_deref_load
;
975 case ir_intrinsic_image_store
:
976 op
= nir_intrinsic_image_deref_store
;
978 case ir_intrinsic_image_atomic_add
:
979 op
= ir
->return_deref
->type
->is_integer_32_64()
980 ? nir_intrinsic_image_deref_atomic_add
981 : nir_intrinsic_image_deref_atomic_fadd
;
983 case ir_intrinsic_image_atomic_min
:
984 if (ir
->return_deref
->type
== glsl_type::int_type
)
985 op
= nir_intrinsic_image_deref_atomic_imin
;
986 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
987 op
= nir_intrinsic_image_deref_atomic_umin
;
989 unreachable("Invalid type");
991 case ir_intrinsic_image_atomic_max
:
992 if (ir
->return_deref
->type
== glsl_type::int_type
)
993 op
= nir_intrinsic_image_deref_atomic_imax
;
994 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
995 op
= nir_intrinsic_image_deref_atomic_umax
;
997 unreachable("Invalid type");
999 case ir_intrinsic_image_atomic_and
:
1000 op
= nir_intrinsic_image_deref_atomic_and
;
1002 case ir_intrinsic_image_atomic_or
:
1003 op
= nir_intrinsic_image_deref_atomic_or
;
1005 case ir_intrinsic_image_atomic_xor
:
1006 op
= nir_intrinsic_image_deref_atomic_xor
;
1008 case ir_intrinsic_image_atomic_exchange
:
1009 op
= nir_intrinsic_image_deref_atomic_exchange
;
1011 case ir_intrinsic_image_atomic_comp_swap
:
1012 op
= nir_intrinsic_image_deref_atomic_comp_swap
;
1014 case ir_intrinsic_image_atomic_inc_wrap
:
1015 op
= nir_intrinsic_image_deref_atomic_inc_wrap
;
1017 case ir_intrinsic_image_atomic_dec_wrap
:
1018 op
= nir_intrinsic_image_deref_atomic_dec_wrap
;
1020 case ir_intrinsic_memory_barrier
:
1021 op
= nir_intrinsic_memory_barrier
;
1023 case ir_intrinsic_image_size
:
1024 op
= nir_intrinsic_image_deref_size
;
1026 case ir_intrinsic_image_samples
:
1027 op
= nir_intrinsic_image_deref_samples
;
1029 case ir_intrinsic_ssbo_store
:
1030 op
= nir_intrinsic_store_ssbo
;
1032 case ir_intrinsic_ssbo_load
:
1033 op
= nir_intrinsic_load_ssbo
;
1035 case ir_intrinsic_ssbo_atomic_add
:
1036 op
= ir
->return_deref
->type
->is_integer_32_64()
1037 ? nir_intrinsic_ssbo_atomic_add
: nir_intrinsic_ssbo_atomic_fadd
;
1039 case ir_intrinsic_ssbo_atomic_and
:
1040 op
= nir_intrinsic_ssbo_atomic_and
;
1042 case ir_intrinsic_ssbo_atomic_or
:
1043 op
= nir_intrinsic_ssbo_atomic_or
;
1045 case ir_intrinsic_ssbo_atomic_xor
:
1046 op
= nir_intrinsic_ssbo_atomic_xor
;
1048 case ir_intrinsic_ssbo_atomic_min
:
1049 assert(ir
->return_deref
);
1050 if (ir
->return_deref
->type
== glsl_type::int_type
)
1051 op
= nir_intrinsic_ssbo_atomic_imin
;
1052 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1053 op
= nir_intrinsic_ssbo_atomic_umin
;
1054 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1055 op
= nir_intrinsic_ssbo_atomic_fmin
;
1057 unreachable("Invalid type");
1059 case ir_intrinsic_ssbo_atomic_max
:
1060 assert(ir
->return_deref
);
1061 if (ir
->return_deref
->type
== glsl_type::int_type
)
1062 op
= nir_intrinsic_ssbo_atomic_imax
;
1063 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1064 op
= nir_intrinsic_ssbo_atomic_umax
;
1065 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1066 op
= nir_intrinsic_ssbo_atomic_fmax
;
1068 unreachable("Invalid type");
1070 case ir_intrinsic_ssbo_atomic_exchange
:
1071 op
= nir_intrinsic_ssbo_atomic_exchange
;
1073 case ir_intrinsic_ssbo_atomic_comp_swap
:
1074 op
= ir
->return_deref
->type
->is_integer_32_64()
1075 ? nir_intrinsic_ssbo_atomic_comp_swap
1076 : nir_intrinsic_ssbo_atomic_fcomp_swap
;
1078 case ir_intrinsic_shader_clock
:
1079 op
= nir_intrinsic_shader_clock
;
1081 case ir_intrinsic_begin_invocation_interlock
:
1082 op
= nir_intrinsic_begin_invocation_interlock
;
1084 case ir_intrinsic_end_invocation_interlock
:
1085 op
= nir_intrinsic_end_invocation_interlock
;
1087 case ir_intrinsic_group_memory_barrier
:
1088 op
= nir_intrinsic_group_memory_barrier
;
1090 case ir_intrinsic_memory_barrier_atomic_counter
:
1091 op
= nir_intrinsic_memory_barrier_atomic_counter
;
1093 case ir_intrinsic_memory_barrier_buffer
:
1094 op
= nir_intrinsic_memory_barrier_buffer
;
1096 case ir_intrinsic_memory_barrier_image
:
1097 op
= nir_intrinsic_memory_barrier_image
;
1099 case ir_intrinsic_memory_barrier_shared
:
1100 op
= nir_intrinsic_memory_barrier_shared
;
1102 case ir_intrinsic_shared_load
:
1103 op
= nir_intrinsic_load_shared
;
1105 case ir_intrinsic_shared_store
:
1106 op
= nir_intrinsic_store_shared
;
1108 case ir_intrinsic_shared_atomic_add
:
1109 op
= ir
->return_deref
->type
->is_integer_32_64()
1110 ? nir_intrinsic_shared_atomic_add
1111 : nir_intrinsic_shared_atomic_fadd
;
1113 case ir_intrinsic_shared_atomic_and
:
1114 op
= nir_intrinsic_shared_atomic_and
;
1116 case ir_intrinsic_shared_atomic_or
:
1117 op
= nir_intrinsic_shared_atomic_or
;
1119 case ir_intrinsic_shared_atomic_xor
:
1120 op
= nir_intrinsic_shared_atomic_xor
;
1122 case ir_intrinsic_shared_atomic_min
:
1123 assert(ir
->return_deref
);
1124 if (ir
->return_deref
->type
== glsl_type::int_type
)
1125 op
= nir_intrinsic_shared_atomic_imin
;
1126 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1127 op
= nir_intrinsic_shared_atomic_umin
;
1128 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1129 op
= nir_intrinsic_shared_atomic_fmin
;
1131 unreachable("Invalid type");
1133 case ir_intrinsic_shared_atomic_max
:
1134 assert(ir
->return_deref
);
1135 if (ir
->return_deref
->type
== glsl_type::int_type
)
1136 op
= nir_intrinsic_shared_atomic_imax
;
1137 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1138 op
= nir_intrinsic_shared_atomic_umax
;
1139 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1140 op
= nir_intrinsic_shared_atomic_fmax
;
1142 unreachable("Invalid type");
1144 case ir_intrinsic_shared_atomic_exchange
:
1145 op
= nir_intrinsic_shared_atomic_exchange
;
1147 case ir_intrinsic_shared_atomic_comp_swap
:
1148 op
= ir
->return_deref
->type
->is_integer_32_64()
1149 ? nir_intrinsic_shared_atomic_comp_swap
1150 : nir_intrinsic_shared_atomic_fcomp_swap
;
1152 case ir_intrinsic_vote_any
:
1153 op
= nir_intrinsic_vote_any
;
1155 case ir_intrinsic_vote_all
:
1156 op
= nir_intrinsic_vote_all
;
1158 case ir_intrinsic_vote_eq
:
1159 op
= nir_intrinsic_vote_ieq
;
1161 case ir_intrinsic_ballot
:
1162 op
= nir_intrinsic_ballot
;
1164 case ir_intrinsic_read_invocation
:
1165 op
= nir_intrinsic_read_invocation
;
1167 case ir_intrinsic_read_first_invocation
:
1168 op
= nir_intrinsic_read_first_invocation
;
1170 case ir_intrinsic_helper_invocation
:
1171 op
= nir_intrinsic_is_helper_invocation
;
1174 unreachable("not reached");
1177 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
1178 nir_ssa_def
*ret
= &instr
->dest
.ssa
;
1181 case nir_intrinsic_deref_atomic_add
:
1182 case nir_intrinsic_deref_atomic_imin
:
1183 case nir_intrinsic_deref_atomic_umin
:
1184 case nir_intrinsic_deref_atomic_imax
:
1185 case nir_intrinsic_deref_atomic_umax
:
1186 case nir_intrinsic_deref_atomic_and
:
1187 case nir_intrinsic_deref_atomic_or
:
1188 case nir_intrinsic_deref_atomic_xor
:
1189 case nir_intrinsic_deref_atomic_exchange
:
1190 case nir_intrinsic_deref_atomic_comp_swap
:
1191 case nir_intrinsic_deref_atomic_fadd
:
1192 case nir_intrinsic_deref_atomic_fmin
:
1193 case nir_intrinsic_deref_atomic_fmax
:
1194 case nir_intrinsic_deref_atomic_fcomp_swap
: {
1195 int param_count
= ir
->actual_parameters
.length();
1196 assert(param_count
== 2 || param_count
== 3);
1199 exec_node
*param
= ir
->actual_parameters
.get_head();
1200 ir_rvalue
*rvalue
= (ir_rvalue
*) param
;
1201 ir_dereference
*deref
= rvalue
->as_dereference();
1202 ir_swizzle
*swizzle
= NULL
;
1204 /* We may have a swizzle to pick off a single vec4 component */
1205 swizzle
= rvalue
->as_swizzle();
1206 assert(swizzle
&& swizzle
->type
->vector_elements
== 1);
1207 deref
= swizzle
->val
->as_dereference();
1210 nir_deref_instr
*nir_deref
= evaluate_deref(deref
);
1212 nir_deref
= nir_build_deref_array_imm(&b
, nir_deref
,
1215 instr
->src
[0] = nir_src_for_ssa(&nir_deref
->dest
.ssa
);
1217 nir_intrinsic_set_access(instr
, deref_get_qualifier(nir_deref
));
1219 /* data1 parameter (this is always present) */
1220 param
= param
->get_next();
1221 ir_instruction
*inst
= (ir_instruction
*) param
;
1222 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1224 /* data2 parameter (only with atomic_comp_swap) */
1225 if (param_count
== 3) {
1226 assert(op
== nir_intrinsic_deref_atomic_comp_swap
||
1227 op
== nir_intrinsic_deref_atomic_fcomp_swap
);
1228 param
= param
->get_next();
1229 inst
= (ir_instruction
*) param
;
1230 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1234 assert(ir
->return_deref
);
1235 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1236 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1237 nir_builder_instr_insert(&b
, &instr
->instr
);
1240 case nir_intrinsic_atomic_counter_read_deref
:
1241 case nir_intrinsic_atomic_counter_inc_deref
:
1242 case nir_intrinsic_atomic_counter_pre_dec_deref
:
1243 case nir_intrinsic_atomic_counter_add_deref
:
1244 case nir_intrinsic_atomic_counter_min_deref
:
1245 case nir_intrinsic_atomic_counter_max_deref
:
1246 case nir_intrinsic_atomic_counter_and_deref
:
1247 case nir_intrinsic_atomic_counter_or_deref
:
1248 case nir_intrinsic_atomic_counter_xor_deref
:
1249 case nir_intrinsic_atomic_counter_exchange_deref
:
1250 case nir_intrinsic_atomic_counter_comp_swap_deref
: {
1251 /* Set the counter variable dereference. */
1252 exec_node
*param
= ir
->actual_parameters
.get_head();
1253 ir_dereference
*counter
= (ir_dereference
*)param
;
1255 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(counter
)->dest
.ssa
);
1256 param
= param
->get_next();
1258 /* Set the intrinsic destination. */
1259 if (ir
->return_deref
) {
1260 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1263 /* Set the intrinsic parameters. */
1264 if (!param
->is_tail_sentinel()) {
1266 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1267 param
= param
->get_next();
1270 if (!param
->is_tail_sentinel()) {
1272 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1273 param
= param
->get_next();
1276 nir_builder_instr_insert(&b
, &instr
->instr
);
1279 case nir_intrinsic_image_deref_load
:
1280 case nir_intrinsic_image_deref_store
:
1281 case nir_intrinsic_image_deref_atomic_add
:
1282 case nir_intrinsic_image_deref_atomic_imin
:
1283 case nir_intrinsic_image_deref_atomic_umin
:
1284 case nir_intrinsic_image_deref_atomic_imax
:
1285 case nir_intrinsic_image_deref_atomic_umax
:
1286 case nir_intrinsic_image_deref_atomic_and
:
1287 case nir_intrinsic_image_deref_atomic_or
:
1288 case nir_intrinsic_image_deref_atomic_xor
:
1289 case nir_intrinsic_image_deref_atomic_exchange
:
1290 case nir_intrinsic_image_deref_atomic_comp_swap
:
1291 case nir_intrinsic_image_deref_atomic_fadd
:
1292 case nir_intrinsic_image_deref_samples
:
1293 case nir_intrinsic_image_deref_size
:
1294 case nir_intrinsic_image_deref_atomic_inc_wrap
:
1295 case nir_intrinsic_image_deref_atomic_dec_wrap
: {
1296 nir_ssa_undef_instr
*instr_undef
=
1297 nir_ssa_undef_instr_create(shader
, 1, 32);
1298 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
1300 /* Set the image variable dereference. */
1301 exec_node
*param
= ir
->actual_parameters
.get_head();
1302 ir_dereference
*image
= (ir_dereference
*)param
;
1303 nir_deref_instr
*deref
= evaluate_deref(image
);
1304 const glsl_type
*type
= deref
->type
;
1306 nir_intrinsic_set_access(instr
, deref_get_qualifier(deref
));
1308 instr
->src
[0] = nir_src_for_ssa(&deref
->dest
.ssa
);
1309 param
= param
->get_next();
1311 /* Set the intrinsic destination. */
1312 if (ir
->return_deref
) {
1313 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
1314 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1315 num_components
, 32, NULL
);
1318 if (op
== nir_intrinsic_image_deref_size
) {
1319 instr
->num_components
= instr
->dest
.ssa
.num_components
;
1320 } else if (op
== nir_intrinsic_image_deref_load
||
1321 op
== nir_intrinsic_image_deref_store
) {
1322 instr
->num_components
= 4;
1325 if (op
== nir_intrinsic_image_deref_size
||
1326 op
== nir_intrinsic_image_deref_samples
) {
1327 nir_builder_instr_insert(&b
, &instr
->instr
);
1331 /* Set the address argument, extending the coordinate vector to four
1334 nir_ssa_def
*src_addr
=
1335 evaluate_rvalue((ir_dereference
*)param
);
1336 nir_ssa_def
*srcs
[4];
1338 for (int i
= 0; i
< 4; i
++) {
1339 if (i
< type
->coordinate_components())
1340 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
1342 srcs
[i
] = &instr_undef
->def
;
1345 instr
->src
[1] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
1346 param
= param
->get_next();
1348 /* Set the sample argument, which is undefined for single-sample
1351 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
1353 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1354 param
= param
->get_next();
1356 instr
->src
[2] = nir_src_for_ssa(&instr_undef
->def
);
1359 /* Set the intrinsic parameters. */
1360 if (!param
->is_tail_sentinel()) {
1362 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1363 param
= param
->get_next();
1366 if (!param
->is_tail_sentinel()) {
1368 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1369 param
= param
->get_next();
1371 nir_builder_instr_insert(&b
, &instr
->instr
);
1374 case nir_intrinsic_memory_barrier
:
1375 case nir_intrinsic_group_memory_barrier
:
1376 case nir_intrinsic_memory_barrier_atomic_counter
:
1377 case nir_intrinsic_memory_barrier_buffer
:
1378 case nir_intrinsic_memory_barrier_image
:
1379 case nir_intrinsic_memory_barrier_shared
:
1380 nir_builder_instr_insert(&b
, &instr
->instr
);
1382 case nir_intrinsic_shader_clock
:
1383 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
1384 instr
->num_components
= 2;
1385 nir_builder_instr_insert(&b
, &instr
->instr
);
1387 case nir_intrinsic_begin_invocation_interlock
:
1388 nir_builder_instr_insert(&b
, &instr
->instr
);
1390 case nir_intrinsic_end_invocation_interlock
:
1391 nir_builder_instr_insert(&b
, &instr
->instr
);
1393 case nir_intrinsic_store_ssbo
: {
1394 exec_node
*param
= ir
->actual_parameters
.get_head();
1395 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1397 param
= param
->get_next();
1398 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1400 param
= param
->get_next();
1401 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1403 param
= param
->get_next();
1404 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1407 nir_ssa_def
*nir_val
= evaluate_rvalue(val
);
1408 if (val
->type
->is_boolean())
1409 nir_val
= nir_b2i32(&b
, nir_val
);
1411 instr
->src
[0] = nir_src_for_ssa(nir_val
);
1412 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
1413 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
1414 intrinsic_set_std430_align(instr
, val
->type
);
1415 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1416 instr
->num_components
= val
->type
->vector_elements
;
1418 nir_builder_instr_insert(&b
, &instr
->instr
);
1421 case nir_intrinsic_load_ssbo
: {
1422 exec_node
*param
= ir
->actual_parameters
.get_head();
1423 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1425 param
= param
->get_next();
1426 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1428 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1429 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1431 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1432 instr
->num_components
= type
->vector_elements
;
1433 intrinsic_set_std430_align(instr
, type
);
1435 /* Setup destination register */
1436 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
1437 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1438 type
->vector_elements
, bit_size
, NULL
);
1440 /* Insert the created nir instruction now since in the case of boolean
1441 * result we will need to emit another instruction after it
1443 nir_builder_instr_insert(&b
, &instr
->instr
);
1446 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1447 * consider a true boolean to be ~0. Fix this up with a != 0
1450 if (type
->is_boolean())
1451 ret
= nir_i2b(&b
, &instr
->dest
.ssa
);
1454 case nir_intrinsic_ssbo_atomic_add
:
1455 case nir_intrinsic_ssbo_atomic_imin
:
1456 case nir_intrinsic_ssbo_atomic_umin
:
1457 case nir_intrinsic_ssbo_atomic_imax
:
1458 case nir_intrinsic_ssbo_atomic_umax
:
1459 case nir_intrinsic_ssbo_atomic_and
:
1460 case nir_intrinsic_ssbo_atomic_or
:
1461 case nir_intrinsic_ssbo_atomic_xor
:
1462 case nir_intrinsic_ssbo_atomic_exchange
:
1463 case nir_intrinsic_ssbo_atomic_comp_swap
:
1464 case nir_intrinsic_ssbo_atomic_fadd
:
1465 case nir_intrinsic_ssbo_atomic_fmin
:
1466 case nir_intrinsic_ssbo_atomic_fmax
:
1467 case nir_intrinsic_ssbo_atomic_fcomp_swap
: {
1468 int param_count
= ir
->actual_parameters
.length();
1469 assert(param_count
== 3 || param_count
== 4);
1472 exec_node
*param
= ir
->actual_parameters
.get_head();
1473 ir_instruction
*inst
= (ir_instruction
*) param
;
1474 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1477 param
= param
->get_next();
1478 inst
= (ir_instruction
*) param
;
1479 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1481 /* data1 parameter (this is always present) */
1482 param
= param
->get_next();
1483 inst
= (ir_instruction
*) param
;
1484 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1486 /* data2 parameter (only with atomic_comp_swap) */
1487 if (param_count
== 4) {
1488 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
||
1489 op
== nir_intrinsic_ssbo_atomic_fcomp_swap
);
1490 param
= param
->get_next();
1491 inst
= (ir_instruction
*) param
;
1492 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1496 assert(ir
->return_deref
);
1497 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1498 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1499 nir_builder_instr_insert(&b
, &instr
->instr
);
1502 case nir_intrinsic_load_shared
: {
1503 exec_node
*param
= ir
->actual_parameters
.get_head();
1504 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1506 nir_intrinsic_set_base(instr
, 0);
1507 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1509 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1510 instr
->num_components
= type
->vector_elements
;
1511 intrinsic_set_std430_align(instr
, type
);
1513 /* Setup destination register */
1514 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
1515 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1516 type
->vector_elements
, bit_size
, NULL
);
1518 nir_builder_instr_insert(&b
, &instr
->instr
);
1520 /* The value in shared memory is a 32-bit value */
1521 if (type
->is_boolean())
1522 ret
= nir_i2b(&b
, &instr
->dest
.ssa
);
1525 case nir_intrinsic_store_shared
: {
1526 exec_node
*param
= ir
->actual_parameters
.get_head();
1527 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1529 param
= param
->get_next();
1530 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1532 param
= param
->get_next();
1533 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1536 nir_intrinsic_set_base(instr
, 0);
1537 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1539 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1541 nir_ssa_def
*nir_val
= evaluate_rvalue(val
);
1542 /* The value in shared memory is a 32-bit value */
1543 if (val
->type
->is_boolean())
1544 nir_val
= nir_b2i32(&b
, nir_val
);
1546 instr
->src
[0] = nir_src_for_ssa(nir_val
);
1547 instr
->num_components
= val
->type
->vector_elements
;
1548 intrinsic_set_std430_align(instr
, val
->type
);
1550 nir_builder_instr_insert(&b
, &instr
->instr
);
1553 case nir_intrinsic_shared_atomic_add
:
1554 case nir_intrinsic_shared_atomic_imin
:
1555 case nir_intrinsic_shared_atomic_umin
:
1556 case nir_intrinsic_shared_atomic_imax
:
1557 case nir_intrinsic_shared_atomic_umax
:
1558 case nir_intrinsic_shared_atomic_and
:
1559 case nir_intrinsic_shared_atomic_or
:
1560 case nir_intrinsic_shared_atomic_xor
:
1561 case nir_intrinsic_shared_atomic_exchange
:
1562 case nir_intrinsic_shared_atomic_comp_swap
:
1563 case nir_intrinsic_shared_atomic_fadd
:
1564 case nir_intrinsic_shared_atomic_fmin
:
1565 case nir_intrinsic_shared_atomic_fmax
:
1566 case nir_intrinsic_shared_atomic_fcomp_swap
: {
1567 int param_count
= ir
->actual_parameters
.length();
1568 assert(param_count
== 2 || param_count
== 3);
1571 exec_node
*param
= ir
->actual_parameters
.get_head();
1572 ir_instruction
*inst
= (ir_instruction
*) param
;
1573 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1575 /* data1 parameter (this is always present) */
1576 param
= param
->get_next();
1577 inst
= (ir_instruction
*) param
;
1578 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1580 /* data2 parameter (only with atomic_comp_swap) */
1581 if (param_count
== 3) {
1582 assert(op
== nir_intrinsic_shared_atomic_comp_swap
||
1583 op
== nir_intrinsic_shared_atomic_fcomp_swap
);
1584 param
= param
->get_next();
1585 inst
= (ir_instruction
*) param
;
1587 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1591 assert(ir
->return_deref
);
1592 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1593 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1594 ir
->return_deref
->type
->vector_elements
,
1596 nir_builder_instr_insert(&b
, &instr
->instr
);
1599 case nir_intrinsic_vote_any
:
1600 case nir_intrinsic_vote_all
:
1601 case nir_intrinsic_vote_ieq
: {
1602 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 1, NULL
);
1603 instr
->num_components
= 1;
1605 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1606 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1608 nir_builder_instr_insert(&b
, &instr
->instr
);
1612 case nir_intrinsic_ballot
: {
1613 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1614 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1615 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1617 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1618 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1620 nir_builder_instr_insert(&b
, &instr
->instr
);
1623 case nir_intrinsic_read_invocation
: {
1624 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1625 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1626 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1628 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1629 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1631 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1632 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1634 nir_builder_instr_insert(&b
, &instr
->instr
);
1637 case nir_intrinsic_read_first_invocation
: {
1638 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1639 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1640 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1642 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1643 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1645 nir_builder_instr_insert(&b
, &instr
->instr
);
1648 case nir_intrinsic_is_helper_invocation
: {
1649 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 1, NULL
);
1650 instr
->num_components
= 1;
1651 nir_builder_instr_insert(&b
, &instr
->instr
);
1655 unreachable("not reached");
1658 if (ir
->return_deref
)
1659 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), ret
, ~0);
1664 struct hash_entry
*entry
=
1665 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1667 nir_function
*callee
= (nir_function
*) entry
->data
;
1669 nir_call_instr
*call
= nir_call_instr_create(this->shader
, callee
);
1672 nir_deref_instr
*ret_deref
= NULL
;
1673 if (ir
->return_deref
) {
1674 nir_variable
*ret_tmp
=
1675 nir_local_variable_create(this->impl
, ir
->return_deref
->type
,
1677 ret_deref
= nir_build_deref_var(&b
, ret_tmp
);
1678 call
->params
[i
++] = nir_src_for_ssa(&ret_deref
->dest
.ssa
);
1681 foreach_two_lists(formal_node
, &ir
->callee
->parameters
,
1682 actual_node
, &ir
->actual_parameters
) {
1683 ir_rvalue
*param_rvalue
= (ir_rvalue
*) actual_node
;
1684 ir_variable
*sig_param
= (ir_variable
*) formal_node
;
1686 if (sig_param
->data
.mode
== ir_var_function_out
) {
1687 nir_deref_instr
*out_deref
= evaluate_deref(param_rvalue
);
1688 call
->params
[i
] = nir_src_for_ssa(&out_deref
->dest
.ssa
);
1689 } else if (sig_param
->data
.mode
== ir_var_function_in
) {
1690 nir_ssa_def
*val
= evaluate_rvalue(param_rvalue
);
1691 nir_src src
= nir_src_for_ssa(val
);
1693 nir_src_copy(&call
->params
[i
], &src
, call
);
1694 } else if (sig_param
->data
.mode
== ir_var_function_inout
) {
1695 unreachable("unimplemented: inout parameters");
1701 nir_builder_instr_insert(&b
, &call
->instr
);
1703 if (ir
->return_deref
)
1704 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), nir_load_deref(&b
, ret_deref
), ~0);
1708 nir_visitor::visit(ir_assignment
*ir
)
1710 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1712 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1713 ir
->lhs
->variable_referenced()->data
.precise
;
1715 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1716 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1717 nir_deref_instr
*lhs
= evaluate_deref(ir
->lhs
);
1718 nir_deref_instr
*rhs
= evaluate_deref(ir
->rhs
);
1719 enum gl_access_qualifier lhs_qualifiers
= deref_get_qualifier(lhs
);
1720 enum gl_access_qualifier rhs_qualifiers
= deref_get_qualifier(rhs
);
1721 if (ir
->condition
) {
1722 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1723 nir_copy_deref_with_access(&b
, lhs
, rhs
, lhs_qualifiers
,
1725 nir_pop_if(&b
, NULL
);
1727 nir_copy_deref_with_access(&b
, lhs
, rhs
, lhs_qualifiers
,
1733 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1735 ir
->lhs
->accept(this);
1736 nir_deref_instr
*lhs_deref
= this->deref
;
1737 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1739 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1740 /* GLSL IR will give us the input to the write-masked assignment in a
1741 * single packed vector. So, for example, if the writemask is xzw, then
1742 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1746 unsigned component
= 0;
1747 for (unsigned i
= 0; i
< 4; i
++) {
1748 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1750 src
= nir_swizzle(&b
, src
, swiz
, num_components
);
1753 enum gl_access_qualifier qualifiers
= deref_get_qualifier(lhs_deref
);
1754 if (ir
->condition
) {
1755 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1756 nir_store_deref_with_access(&b
, lhs_deref
, src
, ir
->write_mask
,
1758 nir_pop_if(&b
, NULL
);
1760 nir_store_deref_with_access(&b
, lhs_deref
, src
, ir
->write_mask
,
1766 * Given an instruction, returns a pointer to its destination or NULL if there
1767 * is no destination.
1769 * Note that this only handles instructions we generate at this level.
1772 get_instr_dest(nir_instr
*instr
)
1774 nir_alu_instr
*alu_instr
;
1775 nir_intrinsic_instr
*intrinsic_instr
;
1776 nir_tex_instr
*tex_instr
;
1778 switch (instr
->type
) {
1779 case nir_instr_type_alu
:
1780 alu_instr
= nir_instr_as_alu(instr
);
1781 return &alu_instr
->dest
.dest
;
1783 case nir_instr_type_intrinsic
:
1784 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1785 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1786 return &intrinsic_instr
->dest
;
1790 case nir_instr_type_tex
:
1791 tex_instr
= nir_instr_as_tex(instr
);
1792 return &tex_instr
->dest
;
1795 unreachable("not reached");
1802 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1805 nir_dest
*dest
= get_instr_dest(instr
);
1808 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1810 nir_builder_instr_insert(&b
, instr
);
1813 assert(dest
->is_ssa
);
1814 this->result
= &dest
->ssa
;
1819 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1822 if (ir
->as_dereference() || ir
->as_constant()) {
1824 * A dereference is being used on the right hand side, which means we
1825 * must emit a variable load.
1828 enum gl_access_qualifier access
= deref_get_qualifier(this->deref
);
1829 this->result
= nir_load_deref_with_access(&b
, this->deref
, access
);
1832 return this->result
;
1836 type_is_float(glsl_base_type type
)
1838 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1839 type
== GLSL_TYPE_FLOAT16
;
1843 type_is_signed(glsl_base_type type
)
1845 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1846 type
== GLSL_TYPE_INT16
;
1850 nir_visitor::visit(ir_expression
*ir
)
1852 /* Some special cases */
1853 switch (ir
->operation
) {
1854 case ir_binop_ubo_load
: {
1855 nir_intrinsic_instr
*load
=
1856 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1857 unsigned bit_size
= ir
->type
->is_boolean() ? 32 :
1858 glsl_get_bit_size(ir
->type
);
1859 load
->num_components
= ir
->type
->vector_elements
;
1860 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1861 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1862 intrinsic_set_std430_align(load
, ir
->type
);
1863 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1866 * In UBO's, a true boolean value is any non-zero value, but we consider
1867 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1870 if (ir
->type
->is_boolean())
1871 this->result
= nir_i2b(&b
, &load
->dest
.ssa
);
1876 case ir_unop_interpolate_at_centroid
:
1877 case ir_binop_interpolate_at_offset
:
1878 case ir_binop_interpolate_at_sample
: {
1879 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1880 ir_swizzle
*swizzle
= NULL
;
1882 /* the api does not allow a swizzle here, but the varying packing code
1883 * may have pushed one into here.
1885 swizzle
= ir
->operands
[0]->as_swizzle();
1887 deref
= swizzle
->val
->as_dereference();
1891 deref
->accept(this);
1893 nir_intrinsic_op op
;
1894 if (this->deref
->mode
== nir_var_shader_in
) {
1895 switch (ir
->operation
) {
1896 case ir_unop_interpolate_at_centroid
:
1897 op
= nir_intrinsic_interp_deref_at_centroid
;
1899 case ir_binop_interpolate_at_offset
:
1900 op
= nir_intrinsic_interp_deref_at_offset
;
1902 case ir_binop_interpolate_at_sample
:
1903 op
= nir_intrinsic_interp_deref_at_sample
;
1906 unreachable("Invalid interpolation intrinsic");
1909 /* This case can happen if the vertex shader does not write the
1910 * given varying. In this case, the linker will lower it to a
1911 * global variable. Since interpolating a variable makes no
1912 * sense, we'll just turn it into a load which will probably
1913 * eventually end up as an SSA definition.
1915 assert(this->deref
->mode
== nir_var_shader_temp
);
1916 op
= nir_intrinsic_load_deref
;
1919 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1920 intrin
->num_components
= deref
->type
->vector_elements
;
1921 intrin
->src
[0] = nir_src_for_ssa(&this->deref
->dest
.ssa
);
1923 if (intrin
->intrinsic
== nir_intrinsic_interp_deref_at_offset
||
1924 intrin
->intrinsic
== nir_intrinsic_interp_deref_at_sample
)
1925 intrin
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1927 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1928 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1931 unsigned swiz
[4] = {
1932 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1935 result
= nir_swizzle(&b
, result
, swiz
,
1936 swizzle
->type
->vector_elements
);
1942 case ir_unop_ssbo_unsized_array_length
: {
1943 nir_intrinsic_instr
*intrin
=
1944 nir_intrinsic_instr_create(b
.shader
,
1945 nir_intrinsic_deref_buffer_array_length
);
1947 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1948 intrin
->src
[0] = nir_src_for_ssa(&evaluate_deref(deref
)->dest
.ssa
);
1950 add_instr(&intrin
->instr
, 1, 32);
1958 nir_ssa_def
*srcs
[4];
1959 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1960 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1962 glsl_base_type types
[4];
1963 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1964 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1966 glsl_base_type out_type
= ir
->type
->base_type
;
1968 switch (ir
->operation
) {
1969 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1970 case ir_unop_logic_not
:
1971 result
= nir_inot(&b
, srcs
[0]);
1974 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1975 : nir_ineg(&b
, srcs
[0]);
1978 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1979 : nir_iabs(&b
, srcs
[0]);
1981 case ir_unop_saturate
:
1982 assert(type_is_float(types
[0]));
1983 result
= nir_fsat(&b
, srcs
[0]);
1986 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1987 : nir_isign(&b
, srcs
[0]);
1989 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1990 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1991 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1992 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1993 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1994 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1995 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
2031 case ir_unop_i642u64
:
2032 case ir_unop_u642i64
: {
2033 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
2034 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
2035 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
2036 nir_rounding_mode_undef
),
2037 srcs
[0], NULL
, NULL
, NULL
);
2038 /* b2i and b2f don't have fixed bit-size versions so the builder will
2039 * just assume 32 and we have to fix it up here.
2041 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
2045 case ir_unop_bitcast_i2f
:
2046 case ir_unop_bitcast_f2i
:
2047 case ir_unop_bitcast_u2f
:
2048 case ir_unop_bitcast_f2u
:
2049 case ir_unop_bitcast_i642d
:
2050 case ir_unop_bitcast_d2i64
:
2051 case ir_unop_bitcast_u642d
:
2052 case ir_unop_bitcast_d2u64
:
2053 case ir_unop_subroutine_to_int
:
2055 result
= nir_mov(&b
, srcs
[0]);
2057 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
2058 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
2059 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
2060 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
2061 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
2062 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
2063 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
2064 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
2065 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
2066 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
2067 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
2068 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
2069 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
2070 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
2071 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
2072 case ir_unop_pack_snorm_2x16
:
2073 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
2075 case ir_unop_pack_snorm_4x8
:
2076 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
2078 case ir_unop_pack_unorm_2x16
:
2079 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
2081 case ir_unop_pack_unorm_4x8
:
2082 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
2084 case ir_unop_pack_half_2x16
:
2085 result
= nir_pack_half_2x16(&b
, srcs
[0]);
2087 case ir_unop_unpack_snorm_2x16
:
2088 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
2090 case ir_unop_unpack_snorm_4x8
:
2091 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
2093 case ir_unop_unpack_unorm_2x16
:
2094 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
2096 case ir_unop_unpack_unorm_4x8
:
2097 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
2099 case ir_unop_unpack_half_2x16
:
2100 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
2102 case ir_unop_pack_sampler_2x32
:
2103 case ir_unop_pack_image_2x32
:
2104 case ir_unop_pack_double_2x32
:
2105 case ir_unop_pack_int_2x32
:
2106 case ir_unop_pack_uint_2x32
:
2107 result
= nir_pack_64_2x32(&b
, srcs
[0]);
2109 case ir_unop_unpack_sampler_2x32
:
2110 case ir_unop_unpack_image_2x32
:
2111 case ir_unop_unpack_double_2x32
:
2112 case ir_unop_unpack_int_2x32
:
2113 case ir_unop_unpack_uint_2x32
:
2114 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
2116 case ir_unop_bitfield_reverse
:
2117 result
= nir_bitfield_reverse(&b
, srcs
[0]);
2119 case ir_unop_bit_count
:
2120 result
= nir_bit_count(&b
, srcs
[0]);
2122 case ir_unop_find_msb
:
2124 case GLSL_TYPE_UINT
:
2125 result
= nir_ufind_msb(&b
, srcs
[0]);
2128 result
= nir_ifind_msb(&b
, srcs
[0]);
2131 unreachable("Invalid type for findMSB()");
2134 case ir_unop_find_lsb
:
2135 result
= nir_find_lsb(&b
, srcs
[0]);
2139 switch (ir
->type
->vector_elements
) {
2141 switch (ir
->operands
[0]->type
->vector_elements
) {
2142 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
2143 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
2144 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
2145 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
2146 default: unreachable("not reached");
2150 switch (ir
->operands
[0]->type
->vector_elements
) {
2151 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
2152 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
2153 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
2154 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
2155 default: unreachable("not reached");
2159 switch (ir
->operands
[0]->type
->vector_elements
) {
2160 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
2161 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
2162 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
2163 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
2164 default: unreachable("not reached");
2168 switch (ir
->operands
[0]->type
->vector_elements
) {
2169 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
2170 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
2171 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
2172 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
2173 default: unreachable("not reached");
2177 unreachable("not reached");
2180 case ir_unop_get_buffer_size
: {
2181 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
2183 nir_intrinsic_get_buffer_size
);
2184 load
->num_components
= ir
->type
->vector_elements
;
2185 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
2186 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2187 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
2192 result
= nir_atan(&b
, srcs
[0]);
2196 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
2197 : nir_iadd(&b
, srcs
[0], srcs
[1]);
2200 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
2201 : nir_isub(&b
, srcs
[0], srcs
[1]);
2204 if (type_is_float(out_type
))
2205 result
= nir_fmul(&b
, srcs
[0], srcs
[1]);
2206 else if (out_type
== GLSL_TYPE_INT64
&&
2207 (ir
->operands
[0]->type
->base_type
== GLSL_TYPE_INT
||
2208 ir
->operands
[1]->type
->base_type
== GLSL_TYPE_INT
))
2209 result
= nir_imul_2x32_64(&b
, srcs
[0], srcs
[1]);
2210 else if (out_type
== GLSL_TYPE_UINT64
&&
2211 (ir
->operands
[0]->type
->base_type
== GLSL_TYPE_UINT
||
2212 ir
->operands
[1]->type
->base_type
== GLSL_TYPE_UINT
))
2213 result
= nir_umul_2x32_64(&b
, srcs
[0], srcs
[1]);
2215 result
= nir_imul(&b
, srcs
[0], srcs
[1]);
2218 if (type_is_float(out_type
))
2219 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
2220 else if (type_is_signed(out_type
))
2221 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
2223 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
2226 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
2227 : nir_umod(&b
, srcs
[0], srcs
[1]);
2230 if (type_is_float(out_type
))
2231 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
2232 else if (type_is_signed(out_type
))
2233 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
2235 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
2238 if (type_is_float(out_type
))
2239 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
2240 else if (type_is_signed(out_type
))
2241 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
2243 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
2245 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
2246 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
2247 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
2248 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
2249 case ir_binop_logic_and
:
2250 result
= nir_iand(&b
, srcs
[0], srcs
[1]);
2252 case ir_binop_logic_or
:
2253 result
= nir_ior(&b
, srcs
[0], srcs
[1]);
2255 case ir_binop_logic_xor
:
2256 result
= nir_ixor(&b
, srcs
[0], srcs
[1]);
2258 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
2259 case ir_binop_rshift
:
2260 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
2261 : nir_ushr(&b
, srcs
[0], srcs
[1]);
2263 case ir_binop_imul_high
:
2264 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
2265 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
2267 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
2268 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
2270 if (type_is_float(types
[0]))
2271 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
2272 else if (type_is_signed(types
[0]))
2273 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
2275 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
2277 case ir_binop_gequal
:
2278 if (type_is_float(types
[0]))
2279 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
2280 else if (type_is_signed(types
[0]))
2281 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
2283 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
2285 case ir_binop_equal
:
2286 if (type_is_float(types
[0]))
2287 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
2289 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
2291 case ir_binop_nequal
:
2292 if (type_is_float(types
[0]))
2293 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
2295 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
2297 case ir_binop_all_equal
:
2298 if (type_is_float(types
[0])) {
2299 switch (ir
->operands
[0]->type
->vector_elements
) {
2300 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
2301 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
2302 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
2303 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
2305 unreachable("not reached");
2308 switch (ir
->operands
[0]->type
->vector_elements
) {
2309 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
2310 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
2311 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
2312 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
2314 unreachable("not reached");
2318 case ir_binop_any_nequal
:
2319 if (type_is_float(types
[0])) {
2320 switch (ir
->operands
[0]->type
->vector_elements
) {
2321 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
2322 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
2323 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
2324 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
2326 unreachable("not reached");
2329 switch (ir
->operands
[0]->type
->vector_elements
) {
2330 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
2331 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
2332 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
2333 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
2335 unreachable("not reached");
2340 switch (ir
->operands
[0]->type
->vector_elements
) {
2341 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
2342 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
2343 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
2345 unreachable("not reached");
2348 case ir_binop_vector_extract
: {
2349 result
= nir_channel(&b
, srcs
[0], 0);
2350 for (unsigned i
= 1; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
2351 nir_ssa_def
*swizzled
= nir_channel(&b
, srcs
[0], i
);
2352 result
= nir_bcsel(&b
, nir_ieq(&b
, srcs
[1], nir_imm_int(&b
, i
)),
2358 case ir_binop_atan2
:
2359 result
= nir_atan2(&b
, srcs
[0], srcs
[1]);
2362 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
2364 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
2367 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
2370 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
2372 case ir_triop_bitfield_extract
:
2373 result
= (out_type
== GLSL_TYPE_INT
) ?
2374 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
2375 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
2377 case ir_quadop_bitfield_insert
:
2378 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
2380 case ir_quadop_vector
:
2381 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
2385 unreachable("not reached");
2390 nir_visitor::visit(ir_swizzle
*ir
)
2392 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
2393 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
2394 ir
->type
->vector_elements
);
2398 nir_visitor::visit(ir_texture
*ir
)
2405 num_srcs
= 1; /* coordinate */
2410 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
2411 num_srcs
= 2; /* coordinate, bias/lod */
2415 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
2421 if (ir
->lod_info
.lod
!= NULL
)
2422 num_srcs
= 2; /* coordinate, lod */
2424 num_srcs
= 1; /* coordinate */
2428 op
= nir_texop_txf_ms
;
2429 num_srcs
= 2; /* coordinate, sample_index */
2434 if (ir
->lod_info
.lod
!= NULL
)
2435 num_srcs
= 1; /* lod */
2442 num_srcs
= 1; /* coordinate */
2447 num_srcs
= 1; /* coordinate */
2450 case ir_query_levels
:
2451 op
= nir_texop_query_levels
;
2455 case ir_texture_samples
:
2456 op
= nir_texop_texture_samples
;
2460 case ir_samples_identical
:
2461 op
= nir_texop_samples_identical
;
2462 num_srcs
= 1; /* coordinate */
2466 unreachable("not reached");
2469 if (ir
->projector
!= NULL
)
2471 if (ir
->shadow_comparator
!= NULL
)
2473 /* offsets are constants we store inside nir_tex_intrs.offsets */
2474 if (ir
->offset
!= NULL
&& !ir
->offset
->type
->is_array())
2477 /* Add one for the texture deref */
2480 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2483 instr
->sampler_dim
=
2484 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2485 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2486 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2487 if (instr
->is_shadow
)
2488 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2489 switch (ir
->type
->base_type
) {
2490 case GLSL_TYPE_FLOAT
:
2491 instr
->dest_type
= nir_type_float
;
2494 instr
->dest_type
= nir_type_int
;
2496 case GLSL_TYPE_BOOL
:
2497 case GLSL_TYPE_UINT
:
2498 instr
->dest_type
= nir_type_uint
;
2501 unreachable("not reached");
2504 nir_deref_instr
*sampler_deref
= evaluate_deref(ir
->sampler
);
2506 /* check for bindless handles */
2507 if (sampler_deref
->mode
!= nir_var_uniform
||
2508 nir_deref_instr_get_variable(sampler_deref
)->data
.bindless
) {
2509 nir_ssa_def
*load
= nir_load_deref(&b
, sampler_deref
);
2510 instr
->src
[0].src
= nir_src_for_ssa(load
);
2511 instr
->src
[0].src_type
= nir_tex_src_texture_handle
;
2512 instr
->src
[1].src
= nir_src_for_ssa(load
);
2513 instr
->src
[1].src_type
= nir_tex_src_sampler_handle
;
2515 instr
->src
[0].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2516 instr
->src
[0].src_type
= nir_tex_src_texture_deref
;
2517 instr
->src
[1].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2518 instr
->src
[1].src_type
= nir_tex_src_sampler_deref
;
2521 unsigned src_number
= 2;
2523 if (ir
->coordinate
!= NULL
) {
2524 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2525 instr
->src
[src_number
].src
=
2526 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2527 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2531 if (ir
->projector
!= NULL
) {
2532 instr
->src
[src_number
].src
=
2533 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2534 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2538 if (ir
->shadow_comparator
!= NULL
) {
2539 instr
->src
[src_number
].src
=
2540 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2541 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2545 if (ir
->offset
!= NULL
) {
2546 if (ir
->offset
->type
->is_array()) {
2547 for (int i
= 0; i
< ir
->offset
->type
->array_size(); i
++) {
2548 const ir_constant
*c
=
2549 ir
->offset
->as_constant()->get_array_element(i
);
2551 for (unsigned j
= 0; j
< 2; ++j
) {
2552 int val
= c
->get_int_component(j
);
2553 assert(val
<= 31 && val
>= -32);
2554 instr
->tg4_offsets
[i
][j
] = val
;
2558 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2560 instr
->src
[src_number
].src
=
2561 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2562 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2569 instr
->src
[src_number
].src
=
2570 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2571 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2578 if (ir
->lod_info
.lod
!= NULL
) {
2579 instr
->src
[src_number
].src
=
2580 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2581 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2587 instr
->src
[src_number
].src
=
2588 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2589 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2591 instr
->src
[src_number
].src
=
2592 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2593 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2598 instr
->src
[src_number
].src
=
2599 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2600 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2605 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2612 assert(src_number
== num_srcs
);
2614 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2615 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2619 nir_visitor::visit(ir_constant
*ir
)
2622 * We don't know if this variable is an array or struct that gets
2623 * dereferenced, so do the safe thing an make it a variable with a
2624 * constant initializer and return a dereference.
2628 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2629 var
->data
.read_only
= true;
2630 var
->constant_initializer
= constant_copy(ir
, var
);
2632 this->deref
= nir_build_deref_var(&b
, var
);
2636 nir_visitor::visit(ir_dereference_variable
*ir
)
2638 if (ir
->variable_referenced()->data
.mode
== ir_var_function_out
) {
2639 unsigned i
= (sig
->return_type
!= glsl_type::void_type
) ? 1 : 0;
2641 foreach_in_list(ir_variable
, param
, &sig
->parameters
) {
2642 if (param
== ir
->variable_referenced()) {
2648 this->deref
= nir_build_deref_cast(&b
, nir_load_param(&b
, i
),
2649 nir_var_function_temp
, ir
->type
, 0);
2653 assert(ir
->variable_referenced()->data
.mode
!= ir_var_function_inout
);
2655 struct hash_entry
*entry
=
2656 _mesa_hash_table_search(this->var_table
, ir
->var
);
2658 nir_variable
*var
= (nir_variable
*) entry
->data
;
2660 this->deref
= nir_build_deref_var(&b
, var
);
2664 nir_visitor::visit(ir_dereference_record
*ir
)
2666 ir
->record
->accept(this);
2668 int field_index
= ir
->field_idx
;
2669 assert(field_index
>= 0);
2671 this->deref
= nir_build_deref_struct(&b
, this->deref
, field_index
);
2675 nir_visitor::visit(ir_dereference_array
*ir
)
2677 nir_ssa_def
*index
= evaluate_rvalue(ir
->array_index
);
2679 ir
->array
->accept(this);
2681 this->deref
= nir_build_deref_array(&b
, this->deref
, index
);
2685 nir_visitor::visit(ir_barrier
*)
2687 nir_intrinsic_instr
*instr
=
2688 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2689 nir_builder_instr_insert(&b
, &instr
->instr
);
2693 glsl_float64_funcs_to_nir(struct gl_context
*ctx
,
2694 const nir_shader_compiler_options
*options
)
2696 /* We pretend it's a vertex shader. Ultimately, the stage shouldn't
2697 * matter because we're not optimizing anything here.
2699 struct gl_shader
*sh
= _mesa_new_shader(-1, MESA_SHADER_VERTEX
);
2700 sh
->Source
= float64_source
;
2701 sh
->CompileStatus
= COMPILE_FAILURE
;
2702 _mesa_glsl_compile_shader(ctx
, sh
, false, false, true);
2704 if (!sh
->CompileStatus
) {
2707 "fp64 software impl compile failed:\n%s\nsource:\n%s\n",
2708 sh
->InfoLog
, float64_source
);
2713 nir_shader
*nir
= nir_shader_create(NULL
, MESA_SHADER_VERTEX
, options
, NULL
);
2715 nir_visitor
v1(ctx
, nir
);
2716 nir_function_visitor
v2(&v1
);
2718 visit_exec_list(sh
->ir
, &v1
);
2720 /* _mesa_delete_shader will try to free sh->Source but it's static const */
2722 _mesa_delete_shader(ctx
, sh
);
2724 nir_validate_shader(nir
, "float64_funcs_to_nir");
2726 NIR_PASS_V(nir
, nir_lower_constant_initializers
, nir_var_function_temp
);
2727 NIR_PASS_V(nir
, nir_lower_returns
);
2728 NIR_PASS_V(nir
, nir_inline_functions
);
2729 NIR_PASS_V(nir
, nir_opt_deref
);
2731 /* Do some optimizations to clean up the shader now. By optimizing the
2732 * functions in the library, we avoid having to re-do that work every
2733 * time we inline a copy of a function. Reducing basic blocks also helps
2734 * with compile times.
2736 NIR_PASS_V(nir
, nir_lower_vars_to_ssa
);
2737 NIR_PASS_V(nir
, nir_copy_prop
);
2738 NIR_PASS_V(nir
, nir_opt_dce
);
2739 NIR_PASS_V(nir
, nir_opt_cse
);
2740 NIR_PASS_V(nir
, nir_opt_gcm
, true);
2741 NIR_PASS_V(nir
, nir_opt_peephole_select
, 1, false, false);
2742 NIR_PASS_V(nir
, nir_opt_dce
);