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_deref.h"
38 #include "main/errors.h"
39 #include "main/imports.h"
40 #include "main/mtypes.h"
41 #include "main/shaderobj.h"
42 #include "util/u_math.h"
45 * pass to lower GLSL IR to NIR
47 * This will lower variable dereferences to loads/stores of corresponding
48 * variables in NIR - the variables will be converted to registers in a later
54 class nir_visitor
: public ir_visitor
57 nir_visitor(gl_context
*ctx
, nir_shader
*shader
);
60 virtual void visit(ir_variable
*);
61 virtual void visit(ir_function
*);
62 virtual void visit(ir_function_signature
*);
63 virtual void visit(ir_loop
*);
64 virtual void visit(ir_if
*);
65 virtual void visit(ir_discard
*);
66 virtual void visit(ir_demote
*);
67 virtual void visit(ir_loop_jump
*);
68 virtual void visit(ir_return
*);
69 virtual void visit(ir_call
*);
70 virtual void visit(ir_assignment
*);
71 virtual void visit(ir_emit_vertex
*);
72 virtual void visit(ir_end_primitive
*);
73 virtual void visit(ir_expression
*);
74 virtual void visit(ir_swizzle
*);
75 virtual void visit(ir_texture
*);
76 virtual void visit(ir_constant
*);
77 virtual void visit(ir_dereference_variable
*);
78 virtual void visit(ir_dereference_record
*);
79 virtual void visit(ir_dereference_array
*);
80 virtual void visit(ir_barrier
*);
82 void create_function(ir_function_signature
*ir
);
85 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
86 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
88 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
89 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
90 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
92 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
93 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
98 nir_function_impl
*impl
;
100 nir_ssa_def
*result
; /* result of the expression tree last visited */
102 nir_deref_instr
*evaluate_deref(ir_instruction
*ir
);
104 nir_constant
*constant_copy(ir_constant
*ir
, void *mem_ctx
);
106 /* most recent deref instruction created */
107 nir_deref_instr
*deref
;
109 /* whether the IR we're operating on is per-function or global */
112 ir_function_signature
*sig
;
114 /* map of ir_variable -> nir_variable */
115 struct hash_table
*var_table
;
117 /* map of ir_function_signature -> nir_function_overload */
118 struct hash_table
*overload_table
;
122 * This visitor runs before the main visitor, calling create_function() for
123 * each function so that the main visitor can resolve forward references in
127 class nir_function_visitor
: public ir_hierarchical_visitor
130 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
133 virtual ir_visitor_status
visit_enter(ir_function
*);
136 nir_visitor
*visitor
;
139 /* glsl_to_nir can only handle converting certain function paramaters
140 * to NIR. This visitor checks for parameters it can't currently handle.
142 class ir_function_param_visitor
: public ir_hierarchical_visitor
145 ir_function_param_visitor()
150 virtual ir_visitor_status
visit_enter(ir_function_signature
*ir
)
153 if (ir
->is_intrinsic())
154 return visit_continue
;
156 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
157 if (!param
->type
->is_vector() || !param
->type
->is_scalar()) {
162 if (param
->data
.mode
== ir_var_function_inout
) {
168 return visit_continue
;
174 } /* end of anonymous namespace */
178 has_unsupported_function_param(exec_list
*ir
)
180 ir_function_param_visitor visitor
;
181 visit_list_elements(&visitor
, ir
);
182 return visitor
.unsupported
;
186 glsl_to_nir(struct gl_context
*ctx
,
187 const struct gl_shader_program
*shader_prog
,
188 gl_shader_stage stage
,
189 const nir_shader_compiler_options
*options
)
191 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
193 const struct gl_shader_compiler_options
*gl_options
=
194 &ctx
->Const
.ShaderCompilerOptions
[stage
];
196 /* glsl_to_nir can only handle converting certain function paramaters
197 * to NIR. If we find something we can't handle then we get the GLSL IR
198 * opts to remove it before we continue on.
200 * TODO: add missing glsl ir to nir support and remove this loop.
202 while (has_unsupported_function_param(sh
->ir
)) {
203 do_common_optimization(sh
->ir
, true, true, gl_options
,
204 ctx
->Const
.NativeIntegers
);
207 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
210 nir_visitor
v1(ctx
, shader
);
211 nir_function_visitor
v2(&v1
);
213 visit_exec_list(sh
->ir
, &v1
);
215 nir_validate_shader(shader
, "after glsl to nir, before function inline");
217 /* We have to lower away local constant initializers right before we
218 * inline functions. That way they get properly initialized at the top
219 * of the function and not at the top of its caller.
221 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
222 nir_lower_returns(shader
);
223 nir_inline_functions(shader
);
224 nir_opt_deref(shader
);
226 nir_validate_shader(shader
, "after function inlining and return lowering");
228 /* Now that we have inlined everything remove all of the functions except
231 foreach_list_typed_safe(nir_function
, function
, node
, &(shader
)->functions
){
232 if (strcmp("main", function
->name
) != 0) {
233 exec_node_remove(&function
->node
);
237 /* Remap the locations to slots so those requiring two slots will occupy
238 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
239 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
240 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
241 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
242 nir_remap_dual_slot_attributes(shader
, &sh
->Program
->DualSlotInputs
);
244 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
245 if (shader_prog
->Label
)
246 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
248 /* Check for transform feedback varyings specified via the API */
249 shader
->info
.has_transform_feedback_varyings
=
250 shader_prog
->TransformFeedback
.NumVarying
> 0;
252 /* Check for transform feedback varyings specified in the Shader */
253 if (shader_prog
->last_vert_prog
)
254 shader
->info
.has_transform_feedback_varyings
|=
255 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
257 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
) {
258 shader
->info
.fs
.pixel_center_integer
= sh
->Program
->info
.fs
.pixel_center_integer
;
259 shader
->info
.fs
.origin_upper_left
= sh
->Program
->info
.fs
.origin_upper_left
;
265 nir_visitor::nir_visitor(gl_context
*ctx
, nir_shader
*shader
)
267 this->supports_std430
= ctx
->Const
.UseSTD430AsDefaultPacking
;
268 this->shader
= shader
;
269 this->is_global
= true;
270 this->var_table
= _mesa_pointer_hash_table_create(NULL
);
271 this->overload_table
= _mesa_pointer_hash_table_create(NULL
);
276 memset(&this->b
, 0, sizeof(this->b
));
279 nir_visitor::~nir_visitor()
281 _mesa_hash_table_destroy(this->var_table
, NULL
);
282 _mesa_hash_table_destroy(this->overload_table
, NULL
);
286 nir_visitor::evaluate_deref(ir_instruction
*ir
)
293 nir_visitor::constant_copy(ir_constant
*ir
, void *mem_ctx
)
298 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
300 const unsigned rows
= ir
->type
->vector_elements
;
301 const unsigned cols
= ir
->type
->matrix_columns
;
304 ret
->num_elements
= 0;
305 switch (ir
->type
->base_type
) {
307 /* Only float base types can be matrices. */
310 for (unsigned r
= 0; r
< rows
; r
++)
311 ret
->values
[r
].u32
= ir
->value
.u
[r
];
316 /* Only float base types can be matrices. */
319 for (unsigned r
= 0; r
< rows
; r
++)
320 ret
->values
[r
].i32
= ir
->value
.i
[r
];
324 case GLSL_TYPE_FLOAT
:
325 case GLSL_TYPE_DOUBLE
:
327 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*, cols
);
328 ret
->num_elements
= cols
;
329 for (unsigned c
= 0; c
< cols
; c
++) {
330 nir_constant
*col_const
= rzalloc(mem_ctx
, nir_constant
);
331 col_const
->num_elements
= 0;
332 switch (ir
->type
->base_type
) {
333 case GLSL_TYPE_FLOAT
:
334 for (unsigned r
= 0; r
< rows
; r
++)
335 col_const
->values
[r
].f32
= ir
->value
.f
[c
* rows
+ r
];
338 case GLSL_TYPE_DOUBLE
:
339 for (unsigned r
= 0; r
< rows
; r
++)
340 col_const
->values
[r
].f64
= ir
->value
.d
[c
* rows
+ r
];
344 unreachable("Cannot get here from the first level switch");
346 ret
->elements
[c
] = col_const
;
349 switch (ir
->type
->base_type
) {
350 case GLSL_TYPE_FLOAT
:
351 for (unsigned r
= 0; r
< rows
; r
++)
352 ret
->values
[r
].f32
= ir
->value
.f
[r
];
355 case GLSL_TYPE_DOUBLE
:
356 for (unsigned r
= 0; r
< rows
; r
++)
357 ret
->values
[r
].f64
= ir
->value
.d
[r
];
361 unreachable("Cannot get here from the first level switch");
366 case GLSL_TYPE_UINT64
:
367 /* Only float base types can be matrices. */
370 for (unsigned r
= 0; r
< rows
; r
++)
371 ret
->values
[r
].u64
= ir
->value
.u64
[r
];
374 case GLSL_TYPE_INT64
:
375 /* Only float base types can be matrices. */
378 for (unsigned r
= 0; r
< rows
; r
++)
379 ret
->values
[r
].i64
= ir
->value
.i64
[r
];
383 /* Only float base types can be matrices. */
386 for (unsigned r
= 0; r
< rows
; r
++)
387 ret
->values
[r
].b
= ir
->value
.b
[r
];
391 case GLSL_TYPE_STRUCT
:
392 case GLSL_TYPE_ARRAY
:
393 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
395 ret
->num_elements
= ir
->type
->length
;
397 for (i
= 0; i
< ir
->type
->length
; i
++)
398 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
402 unreachable("not reached");
408 static const glsl_type
*
409 wrap_type_in_array(const glsl_type
*elem_type
, const glsl_type
*array_type
)
411 if (!array_type
->is_array())
414 elem_type
= wrap_type_in_array(elem_type
, array_type
->fields
.array
);
416 return glsl_type::get_array_instance(elem_type
, array_type
->length
);
420 nir_visitor::visit(ir_variable
*ir
)
422 /* TODO: In future we should switch to using the NIR lowering pass but for
423 * now just ignore these variables as GLSL IR should have lowered them.
424 * Anything remaining are just dead vars that weren't cleaned up.
426 if (ir
->data
.mode
== ir_var_shader_shared
)
429 /* FINISHME: inout parameters */
430 assert(ir
->data
.mode
!= ir_var_function_inout
);
432 if (ir
->data
.mode
== ir_var_function_out
)
435 nir_variable
*var
= rzalloc(shader
, nir_variable
);
436 var
->type
= ir
->type
;
437 var
->name
= ralloc_strdup(var
, ir
->name
);
439 var
->data
.always_active_io
= ir
->data
.always_active_io
;
440 var
->data
.read_only
= ir
->data
.read_only
;
441 var
->data
.centroid
= ir
->data
.centroid
;
442 var
->data
.sample
= ir
->data
.sample
;
443 var
->data
.patch
= ir
->data
.patch
;
444 var
->data
.invariant
= ir
->data
.invariant
;
445 var
->data
.location
= ir
->data
.location
;
446 var
->data
.stream
= ir
->data
.stream
;
447 var
->data
.compact
= false;
449 switch(ir
->data
.mode
) {
451 case ir_var_temporary
:
453 var
->data
.mode
= nir_var_shader_temp
;
455 var
->data
.mode
= nir_var_function_temp
;
458 case ir_var_function_in
:
459 case ir_var_const_in
:
460 var
->data
.mode
= nir_var_function_temp
;
463 case ir_var_shader_in
:
464 if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
465 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
466 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
467 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
468 var
->data
.mode
= nir_var_system_value
;
470 var
->data
.mode
= nir_var_shader_in
;
472 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
473 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
474 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
475 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
478 if (shader
->info
.stage
> MESA_SHADER_VERTEX
&&
479 ir
->data
.location
>= VARYING_SLOT_CLIP_DIST0
&&
480 ir
->data
.location
<= VARYING_SLOT_CULL_DIST1
) {
481 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
486 case ir_var_shader_out
:
487 var
->data
.mode
= nir_var_shader_out
;
488 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
489 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
490 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
491 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
494 if (shader
->info
.stage
<= MESA_SHADER_GEOMETRY
&&
495 ir
->data
.location
>= VARYING_SLOT_CLIP_DIST0
&&
496 ir
->data
.location
<= VARYING_SLOT_CULL_DIST1
) {
497 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
502 if (ir
->get_interface_type())
503 var
->data
.mode
= nir_var_mem_ubo
;
505 var
->data
.mode
= nir_var_uniform
;
508 case ir_var_shader_storage
:
509 var
->data
.mode
= nir_var_mem_ssbo
;
512 case ir_var_system_value
:
513 var
->data
.mode
= nir_var_system_value
;
517 unreachable("not reached");
520 unsigned image_access
= 0;
521 if (ir
->data
.memory_read_only
)
522 image_access
|= ACCESS_NON_WRITEABLE
;
523 if (ir
->data
.memory_write_only
)
524 image_access
|= ACCESS_NON_READABLE
;
525 if (ir
->data
.memory_coherent
)
526 image_access
|= ACCESS_COHERENT
;
527 if (ir
->data
.memory_volatile
)
528 image_access
|= ACCESS_VOLATILE
;
529 if (ir
->data
.memory_restrict
)
530 image_access
|= ACCESS_RESTRICT
;
532 /* For UBO and SSBO variables, we need explicit types */
533 if (var
->data
.mode
& (nir_var_mem_ubo
| nir_var_mem_ssbo
)) {
534 const glsl_type
*explicit_ifc_type
=
535 ir
->get_interface_type()->get_explicit_interface_type(supports_std430
);
537 if (ir
->type
->without_array()->is_interface()) {
538 /* If the type contains the interface, wrap the explicit type in the
539 * right number of arrays.
541 var
->type
= wrap_type_in_array(explicit_ifc_type
, ir
->type
);
543 /* Otherwise, this variable is one entry in the interface */
544 UNUSED
bool found
= false;
545 for (unsigned i
= 0; i
< explicit_ifc_type
->length
; i
++) {
546 const glsl_struct_field
*field
=
547 &explicit_ifc_type
->fields
.structure
[i
];
548 if (strcmp(ir
->name
, field
->name
) != 0)
551 var
->type
= field
->type
;
552 if (field
->memory_read_only
)
553 image_access
|= ACCESS_NON_WRITEABLE
;
554 if (field
->memory_write_only
)
555 image_access
|= ACCESS_NON_READABLE
;
556 if (field
->memory_coherent
)
557 image_access
|= ACCESS_COHERENT
;
558 if (field
->memory_volatile
)
559 image_access
|= ACCESS_VOLATILE
;
560 if (field
->memory_restrict
)
561 image_access
|= ACCESS_RESTRICT
;
570 var
->data
.interpolation
= ir
->data
.interpolation
;
571 var
->data
.location_frac
= ir
->data
.location_frac
;
573 switch (ir
->data
.depth_layout
) {
574 case ir_depth_layout_none
:
575 var
->data
.depth_layout
= nir_depth_layout_none
;
577 case ir_depth_layout_any
:
578 var
->data
.depth_layout
= nir_depth_layout_any
;
580 case ir_depth_layout_greater
:
581 var
->data
.depth_layout
= nir_depth_layout_greater
;
583 case ir_depth_layout_less
:
584 var
->data
.depth_layout
= nir_depth_layout_less
;
586 case ir_depth_layout_unchanged
:
587 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
590 unreachable("not reached");
593 var
->data
.index
= ir
->data
.index
;
594 var
->data
.descriptor_set
= 0;
595 var
->data
.binding
= ir
->data
.binding
;
596 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
597 var
->data
.bindless
= ir
->data
.bindless
;
598 var
->data
.offset
= ir
->data
.offset
;
600 var
->data
.image
.access
= (gl_access_qualifier
)image_access
;
601 var
->data
.image
.format
= ir
->data
.image_format
;
603 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
604 var
->data
.explicit_xfb_buffer
= ir
->data
.explicit_xfb_buffer
;
605 var
->data
.explicit_xfb_stride
= ir
->data
.explicit_xfb_stride
;
606 var
->data
.xfb_buffer
= ir
->data
.xfb_buffer
;
607 var
->data
.xfb_stride
= ir
->data
.xfb_stride
;
609 var
->num_state_slots
= ir
->get_num_state_slots();
610 if (var
->num_state_slots
> 0) {
611 var
->state_slots
= rzalloc_array(var
, nir_state_slot
,
612 var
->num_state_slots
);
614 ir_state_slot
*state_slots
= ir
->get_state_slots();
615 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
616 for (unsigned j
= 0; j
< 5; j
++)
617 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
618 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
621 var
->state_slots
= NULL
;
624 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
626 var
->interface_type
= ir
->get_interface_type();
628 if (var
->data
.mode
== nir_var_function_temp
)
629 nir_function_impl_add_variable(impl
, var
);
631 nir_shader_add_variable(shader
, var
);
633 _mesa_hash_table_insert(var_table
, ir
, var
);
637 nir_function_visitor::visit_enter(ir_function
*ir
)
639 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
640 visitor
->create_function(sig
);
642 return visit_continue_with_parent
;
646 nir_visitor::create_function(ir_function_signature
*ir
)
648 if (ir
->is_intrinsic())
651 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
652 if (strcmp(ir
->function_name(), "main") == 0)
653 func
->is_entrypoint
= true;
655 func
->num_params
= ir
->parameters
.length() +
656 (ir
->return_type
!= glsl_type::void_type
);
657 func
->params
= ralloc_array(shader
, nir_parameter
, func
->num_params
);
661 if (ir
->return_type
!= glsl_type::void_type
) {
662 /* The return value is a variable deref (basically an out parameter) */
663 func
->params
[np
].num_components
= 1;
664 func
->params
[np
].bit_size
= 32;
668 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
669 /* FINISHME: pass arrays, structs, etc by reference? */
670 assert(param
->type
->is_vector() || param
->type
->is_scalar());
672 if (param
->data
.mode
== ir_var_function_in
) {
673 func
->params
[np
].num_components
= param
->type
->vector_elements
;
674 func
->params
[np
].bit_size
= glsl_get_bit_size(param
->type
);
676 func
->params
[np
].num_components
= 1;
677 func
->params
[np
].bit_size
= 32;
681 assert(np
== func
->num_params
);
683 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
687 nir_visitor::visit(ir_function
*ir
)
689 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
694 nir_visitor::visit(ir_function_signature
*ir
)
696 if (ir
->is_intrinsic())
701 struct hash_entry
*entry
=
702 _mesa_hash_table_search(this->overload_table
, ir
);
705 nir_function
*func
= (nir_function
*) entry
->data
;
707 if (ir
->is_defined
) {
708 nir_function_impl
*impl
= nir_function_impl_create(func
);
711 this->is_global
= false;
713 nir_builder_init(&b
, impl
);
714 b
.cursor
= nir_after_cf_list(&impl
->body
);
716 unsigned i
= (ir
->return_type
!= glsl_type::void_type
) ? 1 : 0;
718 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
720 nir_local_variable_create(impl
, param
->type
, param
->name
);
722 if (param
->data
.mode
== ir_var_function_in
) {
723 nir_store_var(&b
, var
, nir_load_param(&b
, i
), ~0);
726 _mesa_hash_table_insert(var_table
, param
, var
);
730 visit_exec_list(&ir
->body
, this);
732 this->is_global
= true;
739 nir_visitor::visit(ir_loop
*ir
)
742 visit_exec_list(&ir
->body_instructions
, this);
743 nir_pop_loop(&b
, NULL
);
747 nir_visitor::visit(ir_if
*ir
)
749 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
750 visit_exec_list(&ir
->then_instructions
, this);
751 nir_push_else(&b
, NULL
);
752 visit_exec_list(&ir
->else_instructions
, this);
753 nir_pop_if(&b
, NULL
);
757 nir_visitor::visit(ir_discard
*ir
)
760 * discards aren't treated as control flow, because before we lower them
761 * they can appear anywhere in the shader and the stuff after them may still
762 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
763 * discards will be immediately followed by a return.
766 nir_intrinsic_instr
*discard
;
768 discard
= nir_intrinsic_instr_create(this->shader
,
769 nir_intrinsic_discard_if
);
771 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
773 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
776 nir_builder_instr_insert(&b
, &discard
->instr
);
780 nir_visitor::visit(ir_demote
*ir
)
782 nir_intrinsic_instr
*demote
=
783 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_demote
);
785 nir_builder_instr_insert(&b
, &demote
->instr
);
789 nir_visitor::visit(ir_emit_vertex
*ir
)
791 nir_intrinsic_instr
*instr
=
792 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
793 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
794 nir_builder_instr_insert(&b
, &instr
->instr
);
798 nir_visitor::visit(ir_end_primitive
*ir
)
800 nir_intrinsic_instr
*instr
=
801 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
802 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
803 nir_builder_instr_insert(&b
, &instr
->instr
);
807 nir_visitor::visit(ir_loop_jump
*ir
)
811 case ir_loop_jump::jump_break
:
812 type
= nir_jump_break
;
814 case ir_loop_jump::jump_continue
:
815 type
= nir_jump_continue
;
818 unreachable("not reached");
821 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
822 nir_builder_instr_insert(&b
, &instr
->instr
);
826 nir_visitor::visit(ir_return
*ir
)
828 if (ir
->value
!= NULL
) {
829 nir_deref_instr
*ret_deref
=
830 nir_build_deref_cast(&b
, nir_load_param(&b
, 0),
831 nir_var_function_temp
, ir
->value
->type
, 0);
833 nir_ssa_def
*val
= evaluate_rvalue(ir
->value
);
834 nir_store_deref(&b
, ret_deref
, val
, ~0);
837 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
838 nir_builder_instr_insert(&b
, &instr
->instr
);
842 intrinsic_set_std430_align(nir_intrinsic_instr
*intrin
, const glsl_type
*type
)
844 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
845 unsigned pow2_components
= util_next_power_of_two(type
->vector_elements
);
846 nir_intrinsic_set_align(intrin
, (bit_size
/ 8) * pow2_components
, 0);
849 /* Accumulate any qualifiers along the deref chain to get the actual
850 * load/store qualifier.
853 static enum gl_access_qualifier
854 deref_get_qualifier(nir_deref_instr
*deref
)
857 nir_deref_path_init(&path
, deref
, NULL
);
859 unsigned qualifiers
= path
.path
[0]->var
->data
.image
.access
;
861 const glsl_type
*parent_type
= path
.path
[0]->type
;
862 for (nir_deref_instr
**cur_ptr
= &path
.path
[1]; *cur_ptr
; cur_ptr
++) {
863 nir_deref_instr
*cur
= *cur_ptr
;
865 if (parent_type
->is_interface()) {
866 const struct glsl_struct_field
*field
=
867 &parent_type
->fields
.structure
[cur
->strct
.index
];
868 if (field
->memory_read_only
)
869 qualifiers
|= ACCESS_NON_WRITEABLE
;
870 if (field
->memory_write_only
)
871 qualifiers
|= ACCESS_NON_READABLE
;
872 if (field
->memory_coherent
)
873 qualifiers
|= ACCESS_COHERENT
;
874 if (field
->memory_volatile
)
875 qualifiers
|= ACCESS_VOLATILE
;
876 if (field
->memory_restrict
)
877 qualifiers
|= ACCESS_RESTRICT
;
880 parent_type
= cur
->type
;
883 nir_deref_path_finish(&path
);
885 return (gl_access_qualifier
) qualifiers
;
889 nir_visitor::visit(ir_call
*ir
)
891 if (ir
->callee
->is_intrinsic()) {
894 switch (ir
->callee
->intrinsic_id
) {
895 case ir_intrinsic_generic_atomic_add
:
896 op
= ir
->return_deref
->type
->is_integer_32_64()
897 ? nir_intrinsic_deref_atomic_add
: nir_intrinsic_deref_atomic_fadd
;
899 case ir_intrinsic_generic_atomic_and
:
900 op
= nir_intrinsic_deref_atomic_and
;
902 case ir_intrinsic_generic_atomic_or
:
903 op
= nir_intrinsic_deref_atomic_or
;
905 case ir_intrinsic_generic_atomic_xor
:
906 op
= nir_intrinsic_deref_atomic_xor
;
908 case ir_intrinsic_generic_atomic_min
:
909 assert(ir
->return_deref
);
910 if (ir
->return_deref
->type
== glsl_type::int_type
)
911 op
= nir_intrinsic_deref_atomic_imin
;
912 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
913 op
= nir_intrinsic_deref_atomic_umin
;
914 else if (ir
->return_deref
->type
== glsl_type::float_type
)
915 op
= nir_intrinsic_deref_atomic_fmin
;
917 unreachable("Invalid type");
919 case ir_intrinsic_generic_atomic_max
:
920 assert(ir
->return_deref
);
921 if (ir
->return_deref
->type
== glsl_type::int_type
)
922 op
= nir_intrinsic_deref_atomic_imax
;
923 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
924 op
= nir_intrinsic_deref_atomic_umax
;
925 else if (ir
->return_deref
->type
== glsl_type::float_type
)
926 op
= nir_intrinsic_deref_atomic_fmax
;
928 unreachable("Invalid type");
930 case ir_intrinsic_generic_atomic_exchange
:
931 op
= nir_intrinsic_deref_atomic_exchange
;
933 case ir_intrinsic_generic_atomic_comp_swap
:
934 op
= ir
->return_deref
->type
->is_integer_32_64()
935 ? nir_intrinsic_deref_atomic_comp_swap
936 : nir_intrinsic_deref_atomic_fcomp_swap
;
938 case ir_intrinsic_atomic_counter_read
:
939 op
= nir_intrinsic_atomic_counter_read_deref
;
941 case ir_intrinsic_atomic_counter_increment
:
942 op
= nir_intrinsic_atomic_counter_inc_deref
;
944 case ir_intrinsic_atomic_counter_predecrement
:
945 op
= nir_intrinsic_atomic_counter_pre_dec_deref
;
947 case ir_intrinsic_atomic_counter_add
:
948 op
= nir_intrinsic_atomic_counter_add_deref
;
950 case ir_intrinsic_atomic_counter_and
:
951 op
= nir_intrinsic_atomic_counter_and_deref
;
953 case ir_intrinsic_atomic_counter_or
:
954 op
= nir_intrinsic_atomic_counter_or_deref
;
956 case ir_intrinsic_atomic_counter_xor
:
957 op
= nir_intrinsic_atomic_counter_xor_deref
;
959 case ir_intrinsic_atomic_counter_min
:
960 op
= nir_intrinsic_atomic_counter_min_deref
;
962 case ir_intrinsic_atomic_counter_max
:
963 op
= nir_intrinsic_atomic_counter_max_deref
;
965 case ir_intrinsic_atomic_counter_exchange
:
966 op
= nir_intrinsic_atomic_counter_exchange_deref
;
968 case ir_intrinsic_atomic_counter_comp_swap
:
969 op
= nir_intrinsic_atomic_counter_comp_swap_deref
;
971 case ir_intrinsic_image_load
:
972 op
= nir_intrinsic_image_deref_load
;
974 case ir_intrinsic_image_store
:
975 op
= nir_intrinsic_image_deref_store
;
977 case ir_intrinsic_image_atomic_add
:
978 op
= ir
->return_deref
->type
->is_integer_32_64()
979 ? nir_intrinsic_image_deref_atomic_add
980 : nir_intrinsic_image_deref_atomic_fadd
;
982 case ir_intrinsic_image_atomic_min
:
983 if (ir
->return_deref
->type
== glsl_type::int_type
)
984 op
= nir_intrinsic_image_deref_atomic_imin
;
985 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
986 op
= nir_intrinsic_image_deref_atomic_umin
;
988 unreachable("Invalid type");
990 case ir_intrinsic_image_atomic_max
:
991 if (ir
->return_deref
->type
== glsl_type::int_type
)
992 op
= nir_intrinsic_image_deref_atomic_imax
;
993 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
994 op
= nir_intrinsic_image_deref_atomic_umax
;
996 unreachable("Invalid type");
998 case ir_intrinsic_image_atomic_and
:
999 op
= nir_intrinsic_image_deref_atomic_and
;
1001 case ir_intrinsic_image_atomic_or
:
1002 op
= nir_intrinsic_image_deref_atomic_or
;
1004 case ir_intrinsic_image_atomic_xor
:
1005 op
= nir_intrinsic_image_deref_atomic_xor
;
1007 case ir_intrinsic_image_atomic_exchange
:
1008 op
= nir_intrinsic_image_deref_atomic_exchange
;
1010 case ir_intrinsic_image_atomic_comp_swap
:
1011 op
= nir_intrinsic_image_deref_atomic_comp_swap
;
1013 case ir_intrinsic_image_atomic_inc_wrap
:
1014 op
= nir_intrinsic_image_deref_atomic_inc_wrap
;
1016 case ir_intrinsic_image_atomic_dec_wrap
:
1017 op
= nir_intrinsic_image_deref_atomic_dec_wrap
;
1019 case ir_intrinsic_memory_barrier
:
1020 op
= nir_intrinsic_memory_barrier
;
1022 case ir_intrinsic_image_size
:
1023 op
= nir_intrinsic_image_deref_size
;
1025 case ir_intrinsic_image_samples
:
1026 op
= nir_intrinsic_image_deref_samples
;
1028 case ir_intrinsic_ssbo_store
:
1029 op
= nir_intrinsic_store_ssbo
;
1031 case ir_intrinsic_ssbo_load
:
1032 op
= nir_intrinsic_load_ssbo
;
1034 case ir_intrinsic_ssbo_atomic_add
:
1035 op
= ir
->return_deref
->type
->is_integer_32_64()
1036 ? nir_intrinsic_ssbo_atomic_add
: nir_intrinsic_ssbo_atomic_fadd
;
1038 case ir_intrinsic_ssbo_atomic_and
:
1039 op
= nir_intrinsic_ssbo_atomic_and
;
1041 case ir_intrinsic_ssbo_atomic_or
:
1042 op
= nir_intrinsic_ssbo_atomic_or
;
1044 case ir_intrinsic_ssbo_atomic_xor
:
1045 op
= nir_intrinsic_ssbo_atomic_xor
;
1047 case ir_intrinsic_ssbo_atomic_min
:
1048 assert(ir
->return_deref
);
1049 if (ir
->return_deref
->type
== glsl_type::int_type
)
1050 op
= nir_intrinsic_ssbo_atomic_imin
;
1051 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1052 op
= nir_intrinsic_ssbo_atomic_umin
;
1053 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1054 op
= nir_intrinsic_ssbo_atomic_fmin
;
1056 unreachable("Invalid type");
1058 case ir_intrinsic_ssbo_atomic_max
:
1059 assert(ir
->return_deref
);
1060 if (ir
->return_deref
->type
== glsl_type::int_type
)
1061 op
= nir_intrinsic_ssbo_atomic_imax
;
1062 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1063 op
= nir_intrinsic_ssbo_atomic_umax
;
1064 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1065 op
= nir_intrinsic_ssbo_atomic_fmax
;
1067 unreachable("Invalid type");
1069 case ir_intrinsic_ssbo_atomic_exchange
:
1070 op
= nir_intrinsic_ssbo_atomic_exchange
;
1072 case ir_intrinsic_ssbo_atomic_comp_swap
:
1073 op
= ir
->return_deref
->type
->is_integer_32_64()
1074 ? nir_intrinsic_ssbo_atomic_comp_swap
1075 : nir_intrinsic_ssbo_atomic_fcomp_swap
;
1077 case ir_intrinsic_shader_clock
:
1078 op
= nir_intrinsic_shader_clock
;
1080 case ir_intrinsic_begin_invocation_interlock
:
1081 op
= nir_intrinsic_begin_invocation_interlock
;
1083 case ir_intrinsic_end_invocation_interlock
:
1084 op
= nir_intrinsic_end_invocation_interlock
;
1086 case ir_intrinsic_group_memory_barrier
:
1087 op
= nir_intrinsic_group_memory_barrier
;
1089 case ir_intrinsic_memory_barrier_atomic_counter
:
1090 op
= nir_intrinsic_memory_barrier_atomic_counter
;
1092 case ir_intrinsic_memory_barrier_buffer
:
1093 op
= nir_intrinsic_memory_barrier_buffer
;
1095 case ir_intrinsic_memory_barrier_image
:
1096 op
= nir_intrinsic_memory_barrier_image
;
1098 case ir_intrinsic_memory_barrier_shared
:
1099 op
= nir_intrinsic_memory_barrier_shared
;
1101 case ir_intrinsic_shared_load
:
1102 op
= nir_intrinsic_load_shared
;
1104 case ir_intrinsic_shared_store
:
1105 op
= nir_intrinsic_store_shared
;
1107 case ir_intrinsic_shared_atomic_add
:
1108 op
= ir
->return_deref
->type
->is_integer_32_64()
1109 ? nir_intrinsic_shared_atomic_add
1110 : nir_intrinsic_shared_atomic_fadd
;
1112 case ir_intrinsic_shared_atomic_and
:
1113 op
= nir_intrinsic_shared_atomic_and
;
1115 case ir_intrinsic_shared_atomic_or
:
1116 op
= nir_intrinsic_shared_atomic_or
;
1118 case ir_intrinsic_shared_atomic_xor
:
1119 op
= nir_intrinsic_shared_atomic_xor
;
1121 case ir_intrinsic_shared_atomic_min
:
1122 assert(ir
->return_deref
);
1123 if (ir
->return_deref
->type
== glsl_type::int_type
)
1124 op
= nir_intrinsic_shared_atomic_imin
;
1125 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1126 op
= nir_intrinsic_shared_atomic_umin
;
1127 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1128 op
= nir_intrinsic_shared_atomic_fmin
;
1130 unreachable("Invalid type");
1132 case ir_intrinsic_shared_atomic_max
:
1133 assert(ir
->return_deref
);
1134 if (ir
->return_deref
->type
== glsl_type::int_type
)
1135 op
= nir_intrinsic_shared_atomic_imax
;
1136 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1137 op
= nir_intrinsic_shared_atomic_umax
;
1138 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1139 op
= nir_intrinsic_shared_atomic_fmax
;
1141 unreachable("Invalid type");
1143 case ir_intrinsic_shared_atomic_exchange
:
1144 op
= nir_intrinsic_shared_atomic_exchange
;
1146 case ir_intrinsic_shared_atomic_comp_swap
:
1147 op
= ir
->return_deref
->type
->is_integer_32_64()
1148 ? nir_intrinsic_shared_atomic_comp_swap
1149 : nir_intrinsic_shared_atomic_fcomp_swap
;
1151 case ir_intrinsic_vote_any
:
1152 op
= nir_intrinsic_vote_any
;
1154 case ir_intrinsic_vote_all
:
1155 op
= nir_intrinsic_vote_all
;
1157 case ir_intrinsic_vote_eq
:
1158 op
= nir_intrinsic_vote_ieq
;
1160 case ir_intrinsic_ballot
:
1161 op
= nir_intrinsic_ballot
;
1163 case ir_intrinsic_read_invocation
:
1164 op
= nir_intrinsic_read_invocation
;
1166 case ir_intrinsic_read_first_invocation
:
1167 op
= nir_intrinsic_read_first_invocation
;
1169 case ir_intrinsic_helper_invocation
:
1170 op
= nir_intrinsic_is_helper_invocation
;
1173 unreachable("not reached");
1176 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
1177 nir_ssa_def
*ret
= &instr
->dest
.ssa
;
1180 case nir_intrinsic_deref_atomic_add
:
1181 case nir_intrinsic_deref_atomic_imin
:
1182 case nir_intrinsic_deref_atomic_umin
:
1183 case nir_intrinsic_deref_atomic_imax
:
1184 case nir_intrinsic_deref_atomic_umax
:
1185 case nir_intrinsic_deref_atomic_and
:
1186 case nir_intrinsic_deref_atomic_or
:
1187 case nir_intrinsic_deref_atomic_xor
:
1188 case nir_intrinsic_deref_atomic_exchange
:
1189 case nir_intrinsic_deref_atomic_comp_swap
:
1190 case nir_intrinsic_deref_atomic_fadd
:
1191 case nir_intrinsic_deref_atomic_fmin
:
1192 case nir_intrinsic_deref_atomic_fmax
:
1193 case nir_intrinsic_deref_atomic_fcomp_swap
: {
1194 int param_count
= ir
->actual_parameters
.length();
1195 assert(param_count
== 2 || param_count
== 3);
1198 exec_node
*param
= ir
->actual_parameters
.get_head();
1199 ir_rvalue
*rvalue
= (ir_rvalue
*) param
;
1200 ir_dereference
*deref
= rvalue
->as_dereference();
1201 ir_swizzle
*swizzle
= NULL
;
1203 /* We may have a swizzle to pick off a single vec4 component */
1204 swizzle
= rvalue
->as_swizzle();
1205 assert(swizzle
&& swizzle
->type
->vector_elements
== 1);
1206 deref
= swizzle
->val
->as_dereference();
1209 nir_deref_instr
*nir_deref
= evaluate_deref(deref
);
1211 nir_deref
= nir_build_deref_array_imm(&b
, nir_deref
,
1214 instr
->src
[0] = nir_src_for_ssa(&nir_deref
->dest
.ssa
);
1216 nir_intrinsic_set_access(instr
, deref_get_qualifier(nir_deref
));
1218 /* data1 parameter (this is always present) */
1219 param
= param
->get_next();
1220 ir_instruction
*inst
= (ir_instruction
*) param
;
1221 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1223 /* data2 parameter (only with atomic_comp_swap) */
1224 if (param_count
== 3) {
1225 assert(op
== nir_intrinsic_deref_atomic_comp_swap
||
1226 op
== nir_intrinsic_deref_atomic_fcomp_swap
);
1227 param
= param
->get_next();
1228 inst
= (ir_instruction
*) param
;
1229 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1233 assert(ir
->return_deref
);
1234 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1235 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1236 nir_builder_instr_insert(&b
, &instr
->instr
);
1239 case nir_intrinsic_atomic_counter_read_deref
:
1240 case nir_intrinsic_atomic_counter_inc_deref
:
1241 case nir_intrinsic_atomic_counter_pre_dec_deref
:
1242 case nir_intrinsic_atomic_counter_add_deref
:
1243 case nir_intrinsic_atomic_counter_min_deref
:
1244 case nir_intrinsic_atomic_counter_max_deref
:
1245 case nir_intrinsic_atomic_counter_and_deref
:
1246 case nir_intrinsic_atomic_counter_or_deref
:
1247 case nir_intrinsic_atomic_counter_xor_deref
:
1248 case nir_intrinsic_atomic_counter_exchange_deref
:
1249 case nir_intrinsic_atomic_counter_comp_swap_deref
: {
1250 /* Set the counter variable dereference. */
1251 exec_node
*param
= ir
->actual_parameters
.get_head();
1252 ir_dereference
*counter
= (ir_dereference
*)param
;
1254 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(counter
)->dest
.ssa
);
1255 param
= param
->get_next();
1257 /* Set the intrinsic destination. */
1258 if (ir
->return_deref
) {
1259 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1262 /* Set the intrinsic parameters. */
1263 if (!param
->is_tail_sentinel()) {
1265 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1266 param
= param
->get_next();
1269 if (!param
->is_tail_sentinel()) {
1271 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1272 param
= param
->get_next();
1275 nir_builder_instr_insert(&b
, &instr
->instr
);
1278 case nir_intrinsic_image_deref_load
:
1279 case nir_intrinsic_image_deref_store
:
1280 case nir_intrinsic_image_deref_atomic_add
:
1281 case nir_intrinsic_image_deref_atomic_imin
:
1282 case nir_intrinsic_image_deref_atomic_umin
:
1283 case nir_intrinsic_image_deref_atomic_imax
:
1284 case nir_intrinsic_image_deref_atomic_umax
:
1285 case nir_intrinsic_image_deref_atomic_and
:
1286 case nir_intrinsic_image_deref_atomic_or
:
1287 case nir_intrinsic_image_deref_atomic_xor
:
1288 case nir_intrinsic_image_deref_atomic_exchange
:
1289 case nir_intrinsic_image_deref_atomic_comp_swap
:
1290 case nir_intrinsic_image_deref_atomic_fadd
:
1291 case nir_intrinsic_image_deref_samples
:
1292 case nir_intrinsic_image_deref_size
:
1293 case nir_intrinsic_image_deref_atomic_inc_wrap
:
1294 case nir_intrinsic_image_deref_atomic_dec_wrap
: {
1295 nir_ssa_undef_instr
*instr_undef
=
1296 nir_ssa_undef_instr_create(shader
, 1, 32);
1297 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
1299 /* Set the image variable dereference. */
1300 exec_node
*param
= ir
->actual_parameters
.get_head();
1301 ir_dereference
*image
= (ir_dereference
*)param
;
1302 nir_deref_instr
*deref
= evaluate_deref(image
);
1303 const glsl_type
*type
= deref
->type
;
1305 nir_intrinsic_set_access(instr
, deref_get_qualifier(deref
));
1307 instr
->src
[0] = nir_src_for_ssa(&deref
->dest
.ssa
);
1308 param
= param
->get_next();
1310 /* Set the intrinsic destination. */
1311 if (ir
->return_deref
) {
1312 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
1313 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1314 num_components
, 32, NULL
);
1317 if (op
== nir_intrinsic_image_deref_size
) {
1318 instr
->num_components
= instr
->dest
.ssa
.num_components
;
1319 } else if (op
== nir_intrinsic_image_deref_load
||
1320 op
== nir_intrinsic_image_deref_store
) {
1321 instr
->num_components
= 4;
1324 if (op
== nir_intrinsic_image_deref_size
||
1325 op
== nir_intrinsic_image_deref_samples
) {
1326 nir_builder_instr_insert(&b
, &instr
->instr
);
1330 /* Set the address argument, extending the coordinate vector to four
1333 nir_ssa_def
*src_addr
=
1334 evaluate_rvalue((ir_dereference
*)param
);
1335 nir_ssa_def
*srcs
[4];
1337 for (int i
= 0; i
< 4; i
++) {
1338 if (i
< type
->coordinate_components())
1339 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
1341 srcs
[i
] = &instr_undef
->def
;
1344 instr
->src
[1] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
1345 param
= param
->get_next();
1347 /* Set the sample argument, which is undefined for single-sample
1350 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
1352 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1353 param
= param
->get_next();
1355 instr
->src
[2] = nir_src_for_ssa(&instr_undef
->def
);
1358 /* Set the intrinsic parameters. */
1359 if (!param
->is_tail_sentinel()) {
1361 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1362 param
= param
->get_next();
1365 if (!param
->is_tail_sentinel()) {
1367 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1368 param
= param
->get_next();
1370 nir_builder_instr_insert(&b
, &instr
->instr
);
1373 case nir_intrinsic_memory_barrier
:
1374 case nir_intrinsic_group_memory_barrier
:
1375 case nir_intrinsic_memory_barrier_atomic_counter
:
1376 case nir_intrinsic_memory_barrier_buffer
:
1377 case nir_intrinsic_memory_barrier_image
:
1378 case nir_intrinsic_memory_barrier_shared
:
1379 nir_builder_instr_insert(&b
, &instr
->instr
);
1381 case nir_intrinsic_shader_clock
:
1382 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
1383 instr
->num_components
= 2;
1384 nir_builder_instr_insert(&b
, &instr
->instr
);
1386 case nir_intrinsic_begin_invocation_interlock
:
1387 nir_builder_instr_insert(&b
, &instr
->instr
);
1389 case nir_intrinsic_end_invocation_interlock
:
1390 nir_builder_instr_insert(&b
, &instr
->instr
);
1392 case nir_intrinsic_store_ssbo
: {
1393 exec_node
*param
= ir
->actual_parameters
.get_head();
1394 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1396 param
= param
->get_next();
1397 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1399 param
= param
->get_next();
1400 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1402 param
= param
->get_next();
1403 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1406 nir_ssa_def
*nir_val
= evaluate_rvalue(val
);
1407 if (val
->type
->is_boolean())
1408 nir_val
= nir_b2i32(&b
, nir_val
);
1410 instr
->src
[0] = nir_src_for_ssa(nir_val
);
1411 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
1412 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
1413 intrinsic_set_std430_align(instr
, val
->type
);
1414 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1415 instr
->num_components
= val
->type
->vector_elements
;
1417 nir_builder_instr_insert(&b
, &instr
->instr
);
1420 case nir_intrinsic_load_ssbo
: {
1421 exec_node
*param
= ir
->actual_parameters
.get_head();
1422 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1424 param
= param
->get_next();
1425 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1427 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1428 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1430 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1431 instr
->num_components
= type
->vector_elements
;
1432 intrinsic_set_std430_align(instr
, type
);
1434 /* Setup destination register */
1435 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
1436 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1437 type
->vector_elements
, bit_size
, NULL
);
1439 /* Insert the created nir instruction now since in the case of boolean
1440 * result we will need to emit another instruction after it
1442 nir_builder_instr_insert(&b
, &instr
->instr
);
1445 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1446 * consider a true boolean to be ~0. Fix this up with a != 0
1449 if (type
->is_boolean())
1450 ret
= nir_i2b(&b
, &instr
->dest
.ssa
);
1453 case nir_intrinsic_ssbo_atomic_add
:
1454 case nir_intrinsic_ssbo_atomic_imin
:
1455 case nir_intrinsic_ssbo_atomic_umin
:
1456 case nir_intrinsic_ssbo_atomic_imax
:
1457 case nir_intrinsic_ssbo_atomic_umax
:
1458 case nir_intrinsic_ssbo_atomic_and
:
1459 case nir_intrinsic_ssbo_atomic_or
:
1460 case nir_intrinsic_ssbo_atomic_xor
:
1461 case nir_intrinsic_ssbo_atomic_exchange
:
1462 case nir_intrinsic_ssbo_atomic_comp_swap
:
1463 case nir_intrinsic_ssbo_atomic_fadd
:
1464 case nir_intrinsic_ssbo_atomic_fmin
:
1465 case nir_intrinsic_ssbo_atomic_fmax
:
1466 case nir_intrinsic_ssbo_atomic_fcomp_swap
: {
1467 int param_count
= ir
->actual_parameters
.length();
1468 assert(param_count
== 3 || param_count
== 4);
1471 exec_node
*param
= ir
->actual_parameters
.get_head();
1472 ir_instruction
*inst
= (ir_instruction
*) param
;
1473 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1476 param
= param
->get_next();
1477 inst
= (ir_instruction
*) param
;
1478 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1480 /* data1 parameter (this is always present) */
1481 param
= param
->get_next();
1482 inst
= (ir_instruction
*) param
;
1483 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1485 /* data2 parameter (only with atomic_comp_swap) */
1486 if (param_count
== 4) {
1487 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
||
1488 op
== nir_intrinsic_ssbo_atomic_fcomp_swap
);
1489 param
= param
->get_next();
1490 inst
= (ir_instruction
*) param
;
1491 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1495 assert(ir
->return_deref
);
1496 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1497 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1498 nir_builder_instr_insert(&b
, &instr
->instr
);
1501 case nir_intrinsic_load_shared
: {
1502 exec_node
*param
= ir
->actual_parameters
.get_head();
1503 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1505 nir_intrinsic_set_base(instr
, 0);
1506 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1508 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1509 instr
->num_components
= type
->vector_elements
;
1510 intrinsic_set_std430_align(instr
, type
);
1512 /* Setup destination register */
1513 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
1514 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1515 type
->vector_elements
, bit_size
, NULL
);
1517 nir_builder_instr_insert(&b
, &instr
->instr
);
1519 /* The value in shared memory is a 32-bit value */
1520 if (type
->is_boolean())
1521 ret
= nir_i2b(&b
, &instr
->dest
.ssa
);
1524 case nir_intrinsic_store_shared
: {
1525 exec_node
*param
= ir
->actual_parameters
.get_head();
1526 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1528 param
= param
->get_next();
1529 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1531 param
= param
->get_next();
1532 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1535 nir_intrinsic_set_base(instr
, 0);
1536 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1538 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1540 nir_ssa_def
*nir_val
= evaluate_rvalue(val
);
1541 /* The value in shared memory is a 32-bit value */
1542 if (val
->type
->is_boolean())
1543 nir_val
= nir_b2i32(&b
, nir_val
);
1545 instr
->src
[0] = nir_src_for_ssa(nir_val
);
1546 instr
->num_components
= val
->type
->vector_elements
;
1547 intrinsic_set_std430_align(instr
, val
->type
);
1549 nir_builder_instr_insert(&b
, &instr
->instr
);
1552 case nir_intrinsic_shared_atomic_add
:
1553 case nir_intrinsic_shared_atomic_imin
:
1554 case nir_intrinsic_shared_atomic_umin
:
1555 case nir_intrinsic_shared_atomic_imax
:
1556 case nir_intrinsic_shared_atomic_umax
:
1557 case nir_intrinsic_shared_atomic_and
:
1558 case nir_intrinsic_shared_atomic_or
:
1559 case nir_intrinsic_shared_atomic_xor
:
1560 case nir_intrinsic_shared_atomic_exchange
:
1561 case nir_intrinsic_shared_atomic_comp_swap
:
1562 case nir_intrinsic_shared_atomic_fadd
:
1563 case nir_intrinsic_shared_atomic_fmin
:
1564 case nir_intrinsic_shared_atomic_fmax
:
1565 case nir_intrinsic_shared_atomic_fcomp_swap
: {
1566 int param_count
= ir
->actual_parameters
.length();
1567 assert(param_count
== 2 || param_count
== 3);
1570 exec_node
*param
= ir
->actual_parameters
.get_head();
1571 ir_instruction
*inst
= (ir_instruction
*) param
;
1572 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1574 /* data1 parameter (this is always present) */
1575 param
= param
->get_next();
1576 inst
= (ir_instruction
*) param
;
1577 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1579 /* data2 parameter (only with atomic_comp_swap) */
1580 if (param_count
== 3) {
1581 assert(op
== nir_intrinsic_shared_atomic_comp_swap
||
1582 op
== nir_intrinsic_shared_atomic_fcomp_swap
);
1583 param
= param
->get_next();
1584 inst
= (ir_instruction
*) param
;
1586 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1590 assert(ir
->return_deref
);
1591 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1592 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1593 ir
->return_deref
->type
->vector_elements
,
1595 nir_builder_instr_insert(&b
, &instr
->instr
);
1598 case nir_intrinsic_vote_any
:
1599 case nir_intrinsic_vote_all
:
1600 case nir_intrinsic_vote_ieq
: {
1601 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 1, NULL
);
1602 instr
->num_components
= 1;
1604 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1605 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1607 nir_builder_instr_insert(&b
, &instr
->instr
);
1611 case nir_intrinsic_ballot
: {
1612 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1613 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1614 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1616 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1617 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1619 nir_builder_instr_insert(&b
, &instr
->instr
);
1622 case nir_intrinsic_read_invocation
: {
1623 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1624 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1625 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1627 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1628 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1630 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1631 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1633 nir_builder_instr_insert(&b
, &instr
->instr
);
1636 case nir_intrinsic_read_first_invocation
: {
1637 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1638 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1639 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1641 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1642 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1644 nir_builder_instr_insert(&b
, &instr
->instr
);
1647 case nir_intrinsic_is_helper_invocation
: {
1648 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 1, NULL
);
1649 instr
->num_components
= 1;
1650 nir_builder_instr_insert(&b
, &instr
->instr
);
1654 unreachable("not reached");
1657 if (ir
->return_deref
)
1658 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), ret
, ~0);
1663 struct hash_entry
*entry
=
1664 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1666 nir_function
*callee
= (nir_function
*) entry
->data
;
1668 nir_call_instr
*call
= nir_call_instr_create(this->shader
, callee
);
1671 nir_deref_instr
*ret_deref
= NULL
;
1672 if (ir
->return_deref
) {
1673 nir_variable
*ret_tmp
=
1674 nir_local_variable_create(this->impl
, ir
->return_deref
->type
,
1676 ret_deref
= nir_build_deref_var(&b
, ret_tmp
);
1677 call
->params
[i
++] = nir_src_for_ssa(&ret_deref
->dest
.ssa
);
1680 foreach_two_lists(formal_node
, &ir
->callee
->parameters
,
1681 actual_node
, &ir
->actual_parameters
) {
1682 ir_rvalue
*param_rvalue
= (ir_rvalue
*) actual_node
;
1683 ir_variable
*sig_param
= (ir_variable
*) formal_node
;
1685 if (sig_param
->data
.mode
== ir_var_function_out
) {
1686 nir_deref_instr
*out_deref
= evaluate_deref(param_rvalue
);
1687 call
->params
[i
] = nir_src_for_ssa(&out_deref
->dest
.ssa
);
1688 } else if (sig_param
->data
.mode
== ir_var_function_in
) {
1689 nir_ssa_def
*val
= evaluate_rvalue(param_rvalue
);
1690 nir_src src
= nir_src_for_ssa(val
);
1692 nir_src_copy(&call
->params
[i
], &src
, call
);
1693 } else if (sig_param
->data
.mode
== ir_var_function_inout
) {
1694 unreachable("unimplemented: inout parameters");
1700 nir_builder_instr_insert(&b
, &call
->instr
);
1702 if (ir
->return_deref
)
1703 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), nir_load_deref(&b
, ret_deref
), ~0);
1707 nir_visitor::visit(ir_assignment
*ir
)
1709 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1711 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1712 ir
->lhs
->variable_referenced()->data
.precise
;
1714 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1715 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1716 nir_deref_instr
*lhs
= evaluate_deref(ir
->lhs
);
1717 nir_deref_instr
*rhs
= evaluate_deref(ir
->rhs
);
1718 enum gl_access_qualifier lhs_qualifiers
= deref_get_qualifier(lhs
);
1719 enum gl_access_qualifier rhs_qualifiers
= deref_get_qualifier(rhs
);
1720 if (ir
->condition
) {
1721 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1722 nir_copy_deref_with_access(&b
, lhs
, rhs
, lhs_qualifiers
,
1724 nir_pop_if(&b
, NULL
);
1726 nir_copy_deref_with_access(&b
, lhs
, rhs
, lhs_qualifiers
,
1732 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1734 ir
->lhs
->accept(this);
1735 nir_deref_instr
*lhs_deref
= this->deref
;
1736 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1738 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1739 /* GLSL IR will give us the input to the write-masked assignment in a
1740 * single packed vector. So, for example, if the writemask is xzw, then
1741 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1745 unsigned component
= 0;
1746 for (unsigned i
= 0; i
< 4; i
++) {
1747 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1749 src
= nir_swizzle(&b
, src
, swiz
, num_components
);
1752 enum gl_access_qualifier qualifiers
= deref_get_qualifier(lhs_deref
);
1753 if (ir
->condition
) {
1754 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1755 nir_store_deref_with_access(&b
, lhs_deref
, src
, ir
->write_mask
,
1757 nir_pop_if(&b
, NULL
);
1759 nir_store_deref_with_access(&b
, lhs_deref
, src
, ir
->write_mask
,
1765 * Given an instruction, returns a pointer to its destination or NULL if there
1766 * is no destination.
1768 * Note that this only handles instructions we generate at this level.
1771 get_instr_dest(nir_instr
*instr
)
1773 nir_alu_instr
*alu_instr
;
1774 nir_intrinsic_instr
*intrinsic_instr
;
1775 nir_tex_instr
*tex_instr
;
1777 switch (instr
->type
) {
1778 case nir_instr_type_alu
:
1779 alu_instr
= nir_instr_as_alu(instr
);
1780 return &alu_instr
->dest
.dest
;
1782 case nir_instr_type_intrinsic
:
1783 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1784 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1785 return &intrinsic_instr
->dest
;
1789 case nir_instr_type_tex
:
1790 tex_instr
= nir_instr_as_tex(instr
);
1791 return &tex_instr
->dest
;
1794 unreachable("not reached");
1801 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1804 nir_dest
*dest
= get_instr_dest(instr
);
1807 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1809 nir_builder_instr_insert(&b
, instr
);
1812 assert(dest
->is_ssa
);
1813 this->result
= &dest
->ssa
;
1818 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1821 if (ir
->as_dereference() || ir
->as_constant()) {
1823 * A dereference is being used on the right hand side, which means we
1824 * must emit a variable load.
1827 enum gl_access_qualifier access
= deref_get_qualifier(this->deref
);
1828 this->result
= nir_load_deref_with_access(&b
, this->deref
, access
);
1831 return this->result
;
1835 type_is_float(glsl_base_type type
)
1837 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1838 type
== GLSL_TYPE_FLOAT16
;
1842 type_is_signed(glsl_base_type type
)
1844 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1845 type
== GLSL_TYPE_INT16
;
1849 nir_visitor::visit(ir_expression
*ir
)
1851 /* Some special cases */
1852 switch (ir
->operation
) {
1853 case ir_binop_ubo_load
: {
1854 nir_intrinsic_instr
*load
=
1855 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1856 unsigned bit_size
= ir
->type
->is_boolean() ? 32 :
1857 glsl_get_bit_size(ir
->type
);
1858 load
->num_components
= ir
->type
->vector_elements
;
1859 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1860 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1861 intrinsic_set_std430_align(load
, ir
->type
);
1862 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1865 * In UBO's, a true boolean value is any non-zero value, but we consider
1866 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1869 if (ir
->type
->is_boolean())
1870 this->result
= nir_i2b(&b
, &load
->dest
.ssa
);
1875 case ir_unop_interpolate_at_centroid
:
1876 case ir_binop_interpolate_at_offset
:
1877 case ir_binop_interpolate_at_sample
: {
1878 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1879 ir_swizzle
*swizzle
= NULL
;
1881 /* the api does not allow a swizzle here, but the varying packing code
1882 * may have pushed one into here.
1884 swizzle
= ir
->operands
[0]->as_swizzle();
1886 deref
= swizzle
->val
->as_dereference();
1890 deref
->accept(this);
1892 nir_intrinsic_op op
;
1893 if (this->deref
->mode
== nir_var_shader_in
) {
1894 switch (ir
->operation
) {
1895 case ir_unop_interpolate_at_centroid
:
1896 op
= nir_intrinsic_interp_deref_at_centroid
;
1898 case ir_binop_interpolate_at_offset
:
1899 op
= nir_intrinsic_interp_deref_at_offset
;
1901 case ir_binop_interpolate_at_sample
:
1902 op
= nir_intrinsic_interp_deref_at_sample
;
1905 unreachable("Invalid interpolation intrinsic");
1908 /* This case can happen if the vertex shader does not write the
1909 * given varying. In this case, the linker will lower it to a
1910 * global variable. Since interpolating a variable makes no
1911 * sense, we'll just turn it into a load which will probably
1912 * eventually end up as an SSA definition.
1914 assert(this->deref
->mode
== nir_var_shader_temp
);
1915 op
= nir_intrinsic_load_deref
;
1918 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1919 intrin
->num_components
= deref
->type
->vector_elements
;
1920 intrin
->src
[0] = nir_src_for_ssa(&this->deref
->dest
.ssa
);
1922 if (intrin
->intrinsic
== nir_intrinsic_interp_deref_at_offset
||
1923 intrin
->intrinsic
== nir_intrinsic_interp_deref_at_sample
)
1924 intrin
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1926 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1927 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1930 unsigned swiz
[4] = {
1931 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1934 result
= nir_swizzle(&b
, result
, swiz
,
1935 swizzle
->type
->vector_elements
);
1941 case ir_unop_ssbo_unsized_array_length
: {
1942 nir_intrinsic_instr
*intrin
=
1943 nir_intrinsic_instr_create(b
.shader
,
1944 nir_intrinsic_deref_buffer_array_length
);
1946 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1947 intrin
->src
[0] = nir_src_for_ssa(&evaluate_deref(deref
)->dest
.ssa
);
1949 add_instr(&intrin
->instr
, 1, 32);
1957 nir_ssa_def
*srcs
[4];
1958 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1959 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1961 glsl_base_type types
[4];
1962 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1963 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1965 glsl_base_type out_type
= ir
->type
->base_type
;
1967 switch (ir
->operation
) {
1968 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1969 case ir_unop_logic_not
:
1970 result
= nir_inot(&b
, srcs
[0]);
1973 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1974 : nir_ineg(&b
, srcs
[0]);
1977 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1978 : nir_iabs(&b
, srcs
[0]);
1980 case ir_unop_saturate
:
1981 assert(type_is_float(types
[0]));
1982 result
= nir_fsat(&b
, srcs
[0]);
1985 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1986 : nir_isign(&b
, srcs
[0]);
1988 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1989 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1990 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1991 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1992 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1993 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
1994 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
2030 case ir_unop_i642u64
:
2031 case ir_unop_u642i64
: {
2032 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
2033 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
2034 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
2035 nir_rounding_mode_undef
),
2036 srcs
[0], NULL
, NULL
, NULL
);
2037 /* b2i and b2f don't have fixed bit-size versions so the builder will
2038 * just assume 32 and we have to fix it up here.
2040 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
2044 case ir_unop_bitcast_i2f
:
2045 case ir_unop_bitcast_f2i
:
2046 case ir_unop_bitcast_u2f
:
2047 case ir_unop_bitcast_f2u
:
2048 case ir_unop_bitcast_i642d
:
2049 case ir_unop_bitcast_d2i64
:
2050 case ir_unop_bitcast_u642d
:
2051 case ir_unop_bitcast_d2u64
:
2052 case ir_unop_subroutine_to_int
:
2054 result
= nir_mov(&b
, srcs
[0]);
2056 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
2057 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
2058 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
2059 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
2060 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
2061 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
2062 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
2063 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
2064 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
2065 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
2066 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
2067 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
2068 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
2069 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
2070 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
2071 case ir_unop_pack_snorm_2x16
:
2072 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
2074 case ir_unop_pack_snorm_4x8
:
2075 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
2077 case ir_unop_pack_unorm_2x16
:
2078 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
2080 case ir_unop_pack_unorm_4x8
:
2081 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
2083 case ir_unop_pack_half_2x16
:
2084 result
= nir_pack_half_2x16(&b
, srcs
[0]);
2086 case ir_unop_unpack_snorm_2x16
:
2087 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
2089 case ir_unop_unpack_snorm_4x8
:
2090 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
2092 case ir_unop_unpack_unorm_2x16
:
2093 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
2095 case ir_unop_unpack_unorm_4x8
:
2096 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
2098 case ir_unop_unpack_half_2x16
:
2099 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
2101 case ir_unop_pack_sampler_2x32
:
2102 case ir_unop_pack_image_2x32
:
2103 case ir_unop_pack_double_2x32
:
2104 case ir_unop_pack_int_2x32
:
2105 case ir_unop_pack_uint_2x32
:
2106 result
= nir_pack_64_2x32(&b
, srcs
[0]);
2108 case ir_unop_unpack_sampler_2x32
:
2109 case ir_unop_unpack_image_2x32
:
2110 case ir_unop_unpack_double_2x32
:
2111 case ir_unop_unpack_int_2x32
:
2112 case ir_unop_unpack_uint_2x32
:
2113 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
2115 case ir_unop_bitfield_reverse
:
2116 result
= nir_bitfield_reverse(&b
, srcs
[0]);
2118 case ir_unop_bit_count
:
2119 result
= nir_bit_count(&b
, srcs
[0]);
2121 case ir_unop_find_msb
:
2123 case GLSL_TYPE_UINT
:
2124 result
= nir_ufind_msb(&b
, srcs
[0]);
2127 result
= nir_ifind_msb(&b
, srcs
[0]);
2130 unreachable("Invalid type for findMSB()");
2133 case ir_unop_find_lsb
:
2134 result
= nir_find_lsb(&b
, srcs
[0]);
2138 switch (ir
->type
->vector_elements
) {
2140 switch (ir
->operands
[0]->type
->vector_elements
) {
2141 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
2142 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
2143 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
2144 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
2145 default: unreachable("not reached");
2149 switch (ir
->operands
[0]->type
->vector_elements
) {
2150 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
2151 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
2152 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
2153 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
2154 default: unreachable("not reached");
2158 switch (ir
->operands
[0]->type
->vector_elements
) {
2159 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
2160 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
2161 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
2162 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
2163 default: unreachable("not reached");
2167 switch (ir
->operands
[0]->type
->vector_elements
) {
2168 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
2169 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
2170 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
2171 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
2172 default: unreachable("not reached");
2176 unreachable("not reached");
2179 case ir_unop_get_buffer_size
: {
2180 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
2182 nir_intrinsic_get_buffer_size
);
2183 load
->num_components
= ir
->type
->vector_elements
;
2184 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
2185 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2186 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
2191 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
2192 : nir_iadd(&b
, srcs
[0], srcs
[1]);
2195 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
2196 : nir_isub(&b
, srcs
[0], srcs
[1]);
2199 if (type_is_float(out_type
))
2200 result
= nir_fmul(&b
, srcs
[0], srcs
[1]);
2201 else if (out_type
== GLSL_TYPE_INT64
&&
2202 (ir
->operands
[0]->type
->base_type
== GLSL_TYPE_INT
||
2203 ir
->operands
[1]->type
->base_type
== GLSL_TYPE_INT
))
2204 result
= nir_imul_2x32_64(&b
, srcs
[0], srcs
[1]);
2205 else if (out_type
== GLSL_TYPE_UINT64
&&
2206 (ir
->operands
[0]->type
->base_type
== GLSL_TYPE_UINT
||
2207 ir
->operands
[1]->type
->base_type
== GLSL_TYPE_UINT
))
2208 result
= nir_umul_2x32_64(&b
, srcs
[0], srcs
[1]);
2210 result
= nir_imul(&b
, srcs
[0], srcs
[1]);
2213 if (type_is_float(out_type
))
2214 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
2215 else if (type_is_signed(out_type
))
2216 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
2218 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
2221 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
2222 : nir_umod(&b
, srcs
[0], srcs
[1]);
2225 if (type_is_float(out_type
))
2226 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
2227 else if (type_is_signed(out_type
))
2228 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
2230 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
2233 if (type_is_float(out_type
))
2234 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
2235 else if (type_is_signed(out_type
))
2236 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
2238 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
2240 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
2241 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
2242 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
2243 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
2244 case ir_binop_logic_and
:
2245 result
= nir_iand(&b
, srcs
[0], srcs
[1]);
2247 case ir_binop_logic_or
:
2248 result
= nir_ior(&b
, srcs
[0], srcs
[1]);
2250 case ir_binop_logic_xor
:
2251 result
= nir_ixor(&b
, srcs
[0], srcs
[1]);
2253 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
2254 case ir_binop_rshift
:
2255 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
2256 : nir_ushr(&b
, srcs
[0], srcs
[1]);
2258 case ir_binop_imul_high
:
2259 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
2260 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
2262 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
2263 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
2265 if (type_is_float(types
[0]))
2266 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
2267 else if (type_is_signed(types
[0]))
2268 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
2270 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
2272 case ir_binop_gequal
:
2273 if (type_is_float(types
[0]))
2274 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
2275 else if (type_is_signed(types
[0]))
2276 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
2278 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
2280 case ir_binop_equal
:
2281 if (type_is_float(types
[0]))
2282 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
2284 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
2286 case ir_binop_nequal
:
2287 if (type_is_float(types
[0]))
2288 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
2290 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
2292 case ir_binop_all_equal
:
2293 if (type_is_float(types
[0])) {
2294 switch (ir
->operands
[0]->type
->vector_elements
) {
2295 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
2296 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
2297 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
2298 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
2300 unreachable("not reached");
2303 switch (ir
->operands
[0]->type
->vector_elements
) {
2304 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
2305 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
2306 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
2307 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
2309 unreachable("not reached");
2313 case ir_binop_any_nequal
:
2314 if (type_is_float(types
[0])) {
2315 switch (ir
->operands
[0]->type
->vector_elements
) {
2316 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
2317 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
2318 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
2319 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
2321 unreachable("not reached");
2324 switch (ir
->operands
[0]->type
->vector_elements
) {
2325 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
2326 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
2327 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
2328 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
2330 unreachable("not reached");
2335 switch (ir
->operands
[0]->type
->vector_elements
) {
2336 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
2337 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
2338 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
2340 unreachable("not reached");
2343 case ir_binop_vector_extract
: {
2344 result
= nir_channel(&b
, srcs
[0], 0);
2345 for (unsigned i
= 1; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
2346 nir_ssa_def
*swizzled
= nir_channel(&b
, srcs
[0], i
);
2347 result
= nir_bcsel(&b
, nir_ieq(&b
, srcs
[1], nir_imm_int(&b
, i
)),
2353 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
2355 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
2358 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
2361 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
2363 case ir_triop_bitfield_extract
:
2364 result
= (out_type
== GLSL_TYPE_INT
) ?
2365 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
2366 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
2368 case ir_quadop_bitfield_insert
:
2369 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
2371 case ir_quadop_vector
:
2372 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
2376 unreachable("not reached");
2381 nir_visitor::visit(ir_swizzle
*ir
)
2383 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
2384 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
2385 ir
->type
->vector_elements
);
2389 nir_visitor::visit(ir_texture
*ir
)
2396 num_srcs
= 1; /* coordinate */
2401 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
2402 num_srcs
= 2; /* coordinate, bias/lod */
2406 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
2412 if (ir
->lod_info
.lod
!= NULL
)
2413 num_srcs
= 2; /* coordinate, lod */
2415 num_srcs
= 1; /* coordinate */
2419 op
= nir_texop_txf_ms
;
2420 num_srcs
= 2; /* coordinate, sample_index */
2425 if (ir
->lod_info
.lod
!= NULL
)
2426 num_srcs
= 1; /* lod */
2433 num_srcs
= 1; /* coordinate */
2438 num_srcs
= 1; /* coordinate */
2441 case ir_query_levels
:
2442 op
= nir_texop_query_levels
;
2446 case ir_texture_samples
:
2447 op
= nir_texop_texture_samples
;
2451 case ir_samples_identical
:
2452 op
= nir_texop_samples_identical
;
2453 num_srcs
= 1; /* coordinate */
2457 unreachable("not reached");
2460 if (ir
->projector
!= NULL
)
2462 if (ir
->shadow_comparator
!= NULL
)
2464 /* offsets are constants we store inside nir_tex_intrs.offsets */
2465 if (ir
->offset
!= NULL
&& !ir
->offset
->type
->is_array())
2468 /* Add one for the texture deref */
2471 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2474 instr
->sampler_dim
=
2475 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2476 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2477 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2478 if (instr
->is_shadow
)
2479 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2480 switch (ir
->type
->base_type
) {
2481 case GLSL_TYPE_FLOAT
:
2482 instr
->dest_type
= nir_type_float
;
2485 instr
->dest_type
= nir_type_int
;
2487 case GLSL_TYPE_BOOL
:
2488 case GLSL_TYPE_UINT
:
2489 instr
->dest_type
= nir_type_uint
;
2492 unreachable("not reached");
2495 nir_deref_instr
*sampler_deref
= evaluate_deref(ir
->sampler
);
2497 /* check for bindless handles */
2498 if (sampler_deref
->mode
!= nir_var_uniform
||
2499 nir_deref_instr_get_variable(sampler_deref
)->data
.bindless
) {
2500 nir_ssa_def
*load
= nir_load_deref(&b
, sampler_deref
);
2501 instr
->src
[0].src
= nir_src_for_ssa(load
);
2502 instr
->src
[0].src_type
= nir_tex_src_texture_handle
;
2503 instr
->src
[1].src
= nir_src_for_ssa(load
);
2504 instr
->src
[1].src_type
= nir_tex_src_sampler_handle
;
2506 instr
->src
[0].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2507 instr
->src
[0].src_type
= nir_tex_src_texture_deref
;
2508 instr
->src
[1].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2509 instr
->src
[1].src_type
= nir_tex_src_sampler_deref
;
2512 unsigned src_number
= 2;
2514 if (ir
->coordinate
!= NULL
) {
2515 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2516 instr
->src
[src_number
].src
=
2517 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2518 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2522 if (ir
->projector
!= NULL
) {
2523 instr
->src
[src_number
].src
=
2524 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2525 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2529 if (ir
->shadow_comparator
!= NULL
) {
2530 instr
->src
[src_number
].src
=
2531 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2532 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2536 if (ir
->offset
!= NULL
) {
2537 if (ir
->offset
->type
->is_array()) {
2538 for (int i
= 0; i
< ir
->offset
->type
->array_size(); i
++) {
2539 const ir_constant
*c
=
2540 ir
->offset
->as_constant()->get_array_element(i
);
2542 for (unsigned j
= 0; j
< 2; ++j
) {
2543 int val
= c
->get_int_component(j
);
2544 assert(val
<= 31 && val
>= -32);
2545 instr
->tg4_offsets
[i
][j
] = val
;
2549 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2551 instr
->src
[src_number
].src
=
2552 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2553 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2560 instr
->src
[src_number
].src
=
2561 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2562 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2569 if (ir
->lod_info
.lod
!= NULL
) {
2570 instr
->src
[src_number
].src
=
2571 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2572 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2578 instr
->src
[src_number
].src
=
2579 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2580 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2582 instr
->src
[src_number
].src
=
2583 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2584 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2589 instr
->src
[src_number
].src
=
2590 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2591 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2596 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2603 assert(src_number
== num_srcs
);
2605 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2606 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2610 nir_visitor::visit(ir_constant
*ir
)
2613 * We don't know if this variable is an array or struct that gets
2614 * dereferenced, so do the safe thing an make it a variable with a
2615 * constant initializer and return a dereference.
2619 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2620 var
->data
.read_only
= true;
2621 var
->constant_initializer
= constant_copy(ir
, var
);
2623 this->deref
= nir_build_deref_var(&b
, var
);
2627 nir_visitor::visit(ir_dereference_variable
*ir
)
2629 if (ir
->variable_referenced()->data
.mode
== ir_var_function_out
) {
2630 unsigned i
= (sig
->return_type
!= glsl_type::void_type
) ? 1 : 0;
2632 foreach_in_list(ir_variable
, param
, &sig
->parameters
) {
2633 if (param
== ir
->variable_referenced()) {
2639 this->deref
= nir_build_deref_cast(&b
, nir_load_param(&b
, i
),
2640 nir_var_function_temp
, ir
->type
, 0);
2644 assert(ir
->variable_referenced()->data
.mode
!= ir_var_function_inout
);
2646 struct hash_entry
*entry
=
2647 _mesa_hash_table_search(this->var_table
, ir
->var
);
2649 nir_variable
*var
= (nir_variable
*) entry
->data
;
2651 this->deref
= nir_build_deref_var(&b
, var
);
2655 nir_visitor::visit(ir_dereference_record
*ir
)
2657 ir
->record
->accept(this);
2659 int field_index
= ir
->field_idx
;
2660 assert(field_index
>= 0);
2662 this->deref
= nir_build_deref_struct(&b
, this->deref
, field_index
);
2666 nir_visitor::visit(ir_dereference_array
*ir
)
2668 nir_ssa_def
*index
= evaluate_rvalue(ir
->array_index
);
2670 ir
->array
->accept(this);
2672 this->deref
= nir_build_deref_array(&b
, this->deref
, index
);
2676 nir_visitor::visit(ir_barrier
*)
2678 nir_intrinsic_instr
*instr
=
2679 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2680 nir_builder_instr_insert(&b
, &instr
->instr
);
2684 glsl_float64_funcs_to_nir(struct gl_context
*ctx
,
2685 const nir_shader_compiler_options
*options
)
2687 /* We pretend it's a vertex shader. Ultimately, the stage shouldn't
2688 * matter because we're not optimizing anything here.
2690 struct gl_shader
*sh
= _mesa_new_shader(-1, MESA_SHADER_VERTEX
);
2691 sh
->Source
= float64_source
;
2692 sh
->CompileStatus
= COMPILE_FAILURE
;
2693 _mesa_glsl_compile_shader(ctx
, sh
, false, false, true);
2695 if (!sh
->CompileStatus
) {
2698 "fp64 software impl compile failed:\n%s\nsource:\n%s\n",
2699 sh
->InfoLog
, float64_source
);
2704 nir_shader
*nir
= nir_shader_create(NULL
, MESA_SHADER_VERTEX
, options
, NULL
);
2706 nir_visitor
v1(ctx
, nir
);
2707 nir_function_visitor
v2(&v1
);
2709 visit_exec_list(sh
->ir
, &v1
);
2711 /* _mesa_delete_shader will try to free sh->Source but it's static const */
2713 _mesa_delete_shader(ctx
, sh
);
2715 nir_validate_shader(nir
, "float64_funcs_to_nir");
2717 NIR_PASS_V(nir
, nir_lower_constant_initializers
, nir_var_function_temp
);
2718 NIR_PASS_V(nir
, nir_lower_returns
);
2719 NIR_PASS_V(nir
, nir_inline_functions
);
2720 NIR_PASS_V(nir
, nir_opt_deref
);
2722 /* Do some optimizations to clean up the shader now. By optimizing the
2723 * functions in the library, we avoid having to re-do that work every
2724 * time we inline a copy of a function. Reducing basic blocks also helps
2725 * with compile times.
2727 NIR_PASS_V(nir
, nir_lower_vars_to_ssa
);
2728 NIR_PASS_V(nir
, nir_copy_prop
);
2729 NIR_PASS_V(nir
, nir_opt_dce
);
2730 NIR_PASS_V(nir
, nir_opt_cse
);
2731 NIR_PASS_V(nir
, nir_opt_gcm
, true);
2732 NIR_PASS_V(nir
, nir_opt_peephole_select
, 1, false, false);
2733 NIR_PASS_V(nir
, nir_opt_dce
);