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 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
239 if (shader_prog
->Label
)
240 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
242 /* Check for transform feedback varyings specified via the API */
243 shader
->info
.has_transform_feedback_varyings
=
244 shader_prog
->TransformFeedback
.NumVarying
> 0;
246 /* Check for transform feedback varyings specified in the Shader */
247 if (shader_prog
->last_vert_prog
)
248 shader
->info
.has_transform_feedback_varyings
|=
249 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
251 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
) {
252 shader
->info
.fs
.pixel_center_integer
= sh
->Program
->info
.fs
.pixel_center_integer
;
253 shader
->info
.fs
.origin_upper_left
= sh
->Program
->info
.fs
.origin_upper_left
;
259 nir_visitor::nir_visitor(gl_context
*ctx
, nir_shader
*shader
)
261 this->supports_std430
= ctx
->Const
.UseSTD430AsDefaultPacking
;
262 this->shader
= shader
;
263 this->is_global
= true;
264 this->var_table
= _mesa_pointer_hash_table_create(NULL
);
265 this->overload_table
= _mesa_pointer_hash_table_create(NULL
);
270 memset(&this->b
, 0, sizeof(this->b
));
273 nir_visitor::~nir_visitor()
275 _mesa_hash_table_destroy(this->var_table
, NULL
);
276 _mesa_hash_table_destroy(this->overload_table
, NULL
);
280 nir_visitor::evaluate_deref(ir_instruction
*ir
)
287 nir_visitor::constant_copy(ir_constant
*ir
, void *mem_ctx
)
292 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
294 const unsigned rows
= ir
->type
->vector_elements
;
295 const unsigned cols
= ir
->type
->matrix_columns
;
298 ret
->num_elements
= 0;
299 switch (ir
->type
->base_type
) {
301 /* Only float base types can be matrices. */
304 for (unsigned r
= 0; r
< rows
; r
++)
305 ret
->values
[r
].u32
= ir
->value
.u
[r
];
310 /* Only float base types can be matrices. */
313 for (unsigned r
= 0; r
< rows
; r
++)
314 ret
->values
[r
].i32
= ir
->value
.i
[r
];
318 case GLSL_TYPE_FLOAT
:
319 case GLSL_TYPE_DOUBLE
:
321 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*, cols
);
322 ret
->num_elements
= cols
;
323 for (unsigned c
= 0; c
< cols
; c
++) {
324 nir_constant
*col_const
= rzalloc(mem_ctx
, nir_constant
);
325 col_const
->num_elements
= 0;
326 switch (ir
->type
->base_type
) {
327 case GLSL_TYPE_FLOAT
:
328 for (unsigned r
= 0; r
< rows
; r
++)
329 col_const
->values
[r
].f32
= ir
->value
.f
[c
* rows
+ r
];
332 case GLSL_TYPE_DOUBLE
:
333 for (unsigned r
= 0; r
< rows
; r
++)
334 col_const
->values
[r
].f64
= ir
->value
.d
[c
* rows
+ r
];
338 unreachable("Cannot get here from the first level switch");
340 ret
->elements
[c
] = col_const
;
343 switch (ir
->type
->base_type
) {
344 case GLSL_TYPE_FLOAT
:
345 for (unsigned r
= 0; r
< rows
; r
++)
346 ret
->values
[r
].f32
= ir
->value
.f
[r
];
349 case GLSL_TYPE_DOUBLE
:
350 for (unsigned r
= 0; r
< rows
; r
++)
351 ret
->values
[r
].f64
= ir
->value
.d
[r
];
355 unreachable("Cannot get here from the first level switch");
360 case GLSL_TYPE_UINT64
:
361 /* Only float base types can be matrices. */
364 for (unsigned r
= 0; r
< rows
; r
++)
365 ret
->values
[r
].u64
= ir
->value
.u64
[r
];
368 case GLSL_TYPE_INT64
:
369 /* Only float base types can be matrices. */
372 for (unsigned r
= 0; r
< rows
; r
++)
373 ret
->values
[r
].i64
= ir
->value
.i64
[r
];
377 /* Only float base types can be matrices. */
380 for (unsigned r
= 0; r
< rows
; r
++)
381 ret
->values
[r
].b
= ir
->value
.b
[r
];
385 case GLSL_TYPE_STRUCT
:
386 case GLSL_TYPE_ARRAY
:
387 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
389 ret
->num_elements
= ir
->type
->length
;
391 for (i
= 0; i
< ir
->type
->length
; i
++)
392 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
396 unreachable("not reached");
402 static const glsl_type
*
403 wrap_type_in_array(const glsl_type
*elem_type
, const glsl_type
*array_type
)
405 if (!array_type
->is_array())
408 elem_type
= wrap_type_in_array(elem_type
, array_type
->fields
.array
);
410 return glsl_type::get_array_instance(elem_type
, array_type
->length
);
414 get_nir_how_declared(unsigned how_declared
)
416 if (how_declared
== ir_var_hidden
)
417 return nir_var_hidden
;
419 return nir_var_declared_normally
;
423 nir_visitor::visit(ir_variable
*ir
)
425 /* TODO: In future we should switch to using the NIR lowering pass but for
426 * now just ignore these variables as GLSL IR should have lowered them.
427 * Anything remaining are just dead vars that weren't cleaned up.
429 if (ir
->data
.mode
== ir_var_shader_shared
)
432 /* FINISHME: inout parameters */
433 assert(ir
->data
.mode
!= ir_var_function_inout
);
435 if (ir
->data
.mode
== ir_var_function_out
)
438 nir_variable
*var
= rzalloc(shader
, nir_variable
);
439 var
->type
= ir
->type
;
440 var
->name
= ralloc_strdup(var
, ir
->name
);
442 var
->data
.always_active_io
= ir
->data
.always_active_io
;
443 var
->data
.read_only
= ir
->data
.read_only
;
444 var
->data
.centroid
= ir
->data
.centroid
;
445 var
->data
.sample
= ir
->data
.sample
;
446 var
->data
.patch
= ir
->data
.patch
;
447 var
->data
.how_declared
= get_nir_how_declared(ir
->data
.how_declared
);
448 var
->data
.invariant
= ir
->data
.invariant
;
449 var
->data
.location
= ir
->data
.location
;
450 var
->data
.stream
= ir
->data
.stream
;
451 if (ir
->data
.stream
& (1u << 31))
452 var
->data
.stream
|= NIR_STREAM_PACKED
;
453 var
->data
.compact
= false;
455 switch(ir
->data
.mode
) {
457 case ir_var_temporary
:
459 var
->data
.mode
= nir_var_shader_temp
;
461 var
->data
.mode
= nir_var_function_temp
;
464 case ir_var_function_in
:
465 case ir_var_const_in
:
466 var
->data
.mode
= nir_var_function_temp
;
469 case ir_var_shader_in
:
470 if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
471 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
472 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
473 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
474 var
->data
.mode
= nir_var_system_value
;
476 var
->data
.mode
= nir_var_shader_in
;
478 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
479 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
480 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
481 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
484 if (shader
->info
.stage
> MESA_SHADER_VERTEX
&&
485 ir
->data
.location
>= VARYING_SLOT_CLIP_DIST0
&&
486 ir
->data
.location
<= VARYING_SLOT_CULL_DIST1
) {
487 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
492 case ir_var_shader_out
:
493 var
->data
.mode
= nir_var_shader_out
;
494 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
495 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
496 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
497 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
500 if (shader
->info
.stage
<= MESA_SHADER_GEOMETRY
&&
501 ir
->data
.location
>= VARYING_SLOT_CLIP_DIST0
&&
502 ir
->data
.location
<= VARYING_SLOT_CULL_DIST1
) {
503 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
508 if (ir
->get_interface_type())
509 var
->data
.mode
= nir_var_mem_ubo
;
511 var
->data
.mode
= nir_var_uniform
;
514 case ir_var_shader_storage
:
515 var
->data
.mode
= nir_var_mem_ssbo
;
518 case ir_var_system_value
:
519 var
->data
.mode
= nir_var_system_value
;
523 unreachable("not reached");
526 unsigned mem_access
= 0;
527 if (ir
->data
.memory_read_only
)
528 mem_access
|= ACCESS_NON_WRITEABLE
;
529 if (ir
->data
.memory_write_only
)
530 mem_access
|= ACCESS_NON_READABLE
;
531 if (ir
->data
.memory_coherent
)
532 mem_access
|= ACCESS_COHERENT
;
533 if (ir
->data
.memory_volatile
)
534 mem_access
|= ACCESS_VOLATILE
;
535 if (ir
->data
.memory_restrict
)
536 mem_access
|= ACCESS_RESTRICT
;
538 /* For UBO and SSBO variables, we need explicit types */
539 if (var
->data
.mode
& (nir_var_mem_ubo
| nir_var_mem_ssbo
)) {
540 const glsl_type
*explicit_ifc_type
=
541 ir
->get_interface_type()->get_explicit_interface_type(supports_std430
);
543 if (ir
->type
->without_array()->is_interface()) {
544 /* If the type contains the interface, wrap the explicit type in the
545 * right number of arrays.
547 var
->type
= wrap_type_in_array(explicit_ifc_type
, ir
->type
);
549 /* Otherwise, this variable is one entry in the interface */
550 UNUSED
bool found
= false;
551 for (unsigned i
= 0; i
< explicit_ifc_type
->length
; i
++) {
552 const glsl_struct_field
*field
=
553 &explicit_ifc_type
->fields
.structure
[i
];
554 if (strcmp(ir
->name
, field
->name
) != 0)
557 var
->type
= field
->type
;
558 if (field
->memory_read_only
)
559 mem_access
|= ACCESS_NON_WRITEABLE
;
560 if (field
->memory_write_only
)
561 mem_access
|= ACCESS_NON_READABLE
;
562 if (field
->memory_coherent
)
563 mem_access
|= ACCESS_COHERENT
;
564 if (field
->memory_volatile
)
565 mem_access
|= ACCESS_VOLATILE
;
566 if (field
->memory_restrict
)
567 mem_access
|= ACCESS_RESTRICT
;
576 var
->data
.interpolation
= ir
->data
.interpolation
;
577 var
->data
.location_frac
= ir
->data
.location_frac
;
579 switch (ir
->data
.depth_layout
) {
580 case ir_depth_layout_none
:
581 var
->data
.depth_layout
= nir_depth_layout_none
;
583 case ir_depth_layout_any
:
584 var
->data
.depth_layout
= nir_depth_layout_any
;
586 case ir_depth_layout_greater
:
587 var
->data
.depth_layout
= nir_depth_layout_greater
;
589 case ir_depth_layout_less
:
590 var
->data
.depth_layout
= nir_depth_layout_less
;
592 case ir_depth_layout_unchanged
:
593 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
596 unreachable("not reached");
599 var
->data
.index
= ir
->data
.index
;
600 var
->data
.descriptor_set
= 0;
601 var
->data
.binding
= ir
->data
.binding
;
602 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
603 var
->data
.bindless
= ir
->data
.bindless
;
604 var
->data
.offset
= ir
->data
.offset
;
605 var
->data
.access
= (gl_access_qualifier
)mem_access
;
607 if (var
->type
->without_array()->is_image()) {
608 var
->data
.image
.format
= ir
->data
.image_format
;
609 } else if (var
->data
.mode
== nir_var_shader_out
) {
610 var
->data
.xfb
.buffer
= ir
->data
.xfb_buffer
;
611 var
->data
.xfb
.stride
= ir
->data
.xfb_stride
;
614 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
615 var
->data
.explicit_xfb_buffer
= ir
->data
.explicit_xfb_buffer
;
616 var
->data
.explicit_xfb_stride
= ir
->data
.explicit_xfb_stride
;
618 var
->num_state_slots
= ir
->get_num_state_slots();
619 if (var
->num_state_slots
> 0) {
620 var
->state_slots
= rzalloc_array(var
, nir_state_slot
,
621 var
->num_state_slots
);
623 ir_state_slot
*state_slots
= ir
->get_state_slots();
624 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
625 for (unsigned j
= 0; j
< 5; j
++)
626 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
627 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
630 var
->state_slots
= NULL
;
633 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
635 var
->interface_type
= ir
->get_interface_type();
637 if (var
->data
.mode
== nir_var_function_temp
)
638 nir_function_impl_add_variable(impl
, var
);
640 nir_shader_add_variable(shader
, var
);
642 _mesa_hash_table_insert(var_table
, ir
, var
);
646 nir_function_visitor::visit_enter(ir_function
*ir
)
648 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
649 visitor
->create_function(sig
);
651 return visit_continue_with_parent
;
655 nir_visitor::create_function(ir_function_signature
*ir
)
657 if (ir
->is_intrinsic())
660 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
661 if (strcmp(ir
->function_name(), "main") == 0)
662 func
->is_entrypoint
= true;
664 func
->num_params
= ir
->parameters
.length() +
665 (ir
->return_type
!= glsl_type::void_type
);
666 func
->params
= ralloc_array(shader
, nir_parameter
, func
->num_params
);
670 if (ir
->return_type
!= glsl_type::void_type
) {
671 /* The return value is a variable deref (basically an out parameter) */
672 func
->params
[np
].num_components
= 1;
673 func
->params
[np
].bit_size
= 32;
677 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
678 /* FINISHME: pass arrays, structs, etc by reference? */
679 assert(param
->type
->is_vector() || param
->type
->is_scalar());
681 if (param
->data
.mode
== ir_var_function_in
) {
682 func
->params
[np
].num_components
= param
->type
->vector_elements
;
683 func
->params
[np
].bit_size
= glsl_get_bit_size(param
->type
);
685 func
->params
[np
].num_components
= 1;
686 func
->params
[np
].bit_size
= 32;
690 assert(np
== func
->num_params
);
692 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
696 nir_visitor::visit(ir_function
*ir
)
698 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
703 nir_visitor::visit(ir_function_signature
*ir
)
705 if (ir
->is_intrinsic())
710 struct hash_entry
*entry
=
711 _mesa_hash_table_search(this->overload_table
, ir
);
714 nir_function
*func
= (nir_function
*) entry
->data
;
716 if (ir
->is_defined
) {
717 nir_function_impl
*impl
= nir_function_impl_create(func
);
720 this->is_global
= false;
722 nir_builder_init(&b
, impl
);
723 b
.cursor
= nir_after_cf_list(&impl
->body
);
725 unsigned i
= (ir
->return_type
!= glsl_type::void_type
) ? 1 : 0;
727 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
729 nir_local_variable_create(impl
, param
->type
, param
->name
);
731 if (param
->data
.mode
== ir_var_function_in
) {
732 nir_store_var(&b
, var
, nir_load_param(&b
, i
), ~0);
735 _mesa_hash_table_insert(var_table
, param
, var
);
739 visit_exec_list(&ir
->body
, this);
741 this->is_global
= true;
748 nir_visitor::visit(ir_loop
*ir
)
751 visit_exec_list(&ir
->body_instructions
, this);
752 nir_pop_loop(&b
, NULL
);
756 nir_visitor::visit(ir_if
*ir
)
758 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
759 visit_exec_list(&ir
->then_instructions
, this);
760 nir_push_else(&b
, NULL
);
761 visit_exec_list(&ir
->else_instructions
, this);
762 nir_pop_if(&b
, NULL
);
766 nir_visitor::visit(ir_discard
*ir
)
769 * discards aren't treated as control flow, because before we lower them
770 * they can appear anywhere in the shader and the stuff after them may still
771 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
772 * discards will be immediately followed by a return.
775 nir_intrinsic_instr
*discard
;
777 discard
= nir_intrinsic_instr_create(this->shader
,
778 nir_intrinsic_discard_if
);
780 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
782 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
785 nir_builder_instr_insert(&b
, &discard
->instr
);
789 nir_visitor::visit(ir_demote
*ir
)
791 nir_intrinsic_instr
*demote
=
792 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_demote
);
794 nir_builder_instr_insert(&b
, &demote
->instr
);
798 nir_visitor::visit(ir_emit_vertex
*ir
)
800 nir_intrinsic_instr
*instr
=
801 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
802 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
803 nir_builder_instr_insert(&b
, &instr
->instr
);
807 nir_visitor::visit(ir_end_primitive
*ir
)
809 nir_intrinsic_instr
*instr
=
810 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
811 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
812 nir_builder_instr_insert(&b
, &instr
->instr
);
816 nir_visitor::visit(ir_loop_jump
*ir
)
820 case ir_loop_jump::jump_break
:
821 type
= nir_jump_break
;
823 case ir_loop_jump::jump_continue
:
824 type
= nir_jump_continue
;
827 unreachable("not reached");
830 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
831 nir_builder_instr_insert(&b
, &instr
->instr
);
835 nir_visitor::visit(ir_return
*ir
)
837 if (ir
->value
!= NULL
) {
838 nir_deref_instr
*ret_deref
=
839 nir_build_deref_cast(&b
, nir_load_param(&b
, 0),
840 nir_var_function_temp
, ir
->value
->type
, 0);
842 nir_ssa_def
*val
= evaluate_rvalue(ir
->value
);
843 nir_store_deref(&b
, ret_deref
, val
, ~0);
846 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
847 nir_builder_instr_insert(&b
, &instr
->instr
);
851 intrinsic_set_std430_align(nir_intrinsic_instr
*intrin
, const glsl_type
*type
)
853 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
854 unsigned pow2_components
= util_next_power_of_two(type
->vector_elements
);
855 nir_intrinsic_set_align(intrin
, (bit_size
/ 8) * pow2_components
, 0);
858 /* Accumulate any qualifiers along the deref chain to get the actual
859 * load/store qualifier.
862 static enum gl_access_qualifier
863 deref_get_qualifier(nir_deref_instr
*deref
)
866 nir_deref_path_init(&path
, deref
, NULL
);
868 unsigned qualifiers
= path
.path
[0]->var
->data
.access
;
870 const glsl_type
*parent_type
= path
.path
[0]->type
;
871 for (nir_deref_instr
**cur_ptr
= &path
.path
[1]; *cur_ptr
; cur_ptr
++) {
872 nir_deref_instr
*cur
= *cur_ptr
;
874 if (parent_type
->is_interface()) {
875 const struct glsl_struct_field
*field
=
876 &parent_type
->fields
.structure
[cur
->strct
.index
];
877 if (field
->memory_read_only
)
878 qualifiers
|= ACCESS_NON_WRITEABLE
;
879 if (field
->memory_write_only
)
880 qualifiers
|= ACCESS_NON_READABLE
;
881 if (field
->memory_coherent
)
882 qualifiers
|= ACCESS_COHERENT
;
883 if (field
->memory_volatile
)
884 qualifiers
|= ACCESS_VOLATILE
;
885 if (field
->memory_restrict
)
886 qualifiers
|= ACCESS_RESTRICT
;
889 parent_type
= cur
->type
;
892 nir_deref_path_finish(&path
);
894 return (gl_access_qualifier
) qualifiers
;
898 nir_visitor::visit(ir_call
*ir
)
900 if (ir
->callee
->is_intrinsic()) {
903 switch (ir
->callee
->intrinsic_id
) {
904 case ir_intrinsic_generic_atomic_add
:
905 op
= ir
->return_deref
->type
->is_integer_32_64()
906 ? nir_intrinsic_deref_atomic_add
: nir_intrinsic_deref_atomic_fadd
;
908 case ir_intrinsic_generic_atomic_and
:
909 op
= nir_intrinsic_deref_atomic_and
;
911 case ir_intrinsic_generic_atomic_or
:
912 op
= nir_intrinsic_deref_atomic_or
;
914 case ir_intrinsic_generic_atomic_xor
:
915 op
= nir_intrinsic_deref_atomic_xor
;
917 case ir_intrinsic_generic_atomic_min
:
918 assert(ir
->return_deref
);
919 if (ir
->return_deref
->type
== glsl_type::int_type
)
920 op
= nir_intrinsic_deref_atomic_imin
;
921 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
922 op
= nir_intrinsic_deref_atomic_umin
;
923 else if (ir
->return_deref
->type
== glsl_type::float_type
)
924 op
= nir_intrinsic_deref_atomic_fmin
;
926 unreachable("Invalid type");
928 case ir_intrinsic_generic_atomic_max
:
929 assert(ir
->return_deref
);
930 if (ir
->return_deref
->type
== glsl_type::int_type
)
931 op
= nir_intrinsic_deref_atomic_imax
;
932 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
933 op
= nir_intrinsic_deref_atomic_umax
;
934 else if (ir
->return_deref
->type
== glsl_type::float_type
)
935 op
= nir_intrinsic_deref_atomic_fmax
;
937 unreachable("Invalid type");
939 case ir_intrinsic_generic_atomic_exchange
:
940 op
= nir_intrinsic_deref_atomic_exchange
;
942 case ir_intrinsic_generic_atomic_comp_swap
:
943 op
= ir
->return_deref
->type
->is_integer_32_64()
944 ? nir_intrinsic_deref_atomic_comp_swap
945 : nir_intrinsic_deref_atomic_fcomp_swap
;
947 case ir_intrinsic_atomic_counter_read
:
948 op
= nir_intrinsic_atomic_counter_read_deref
;
950 case ir_intrinsic_atomic_counter_increment
:
951 op
= nir_intrinsic_atomic_counter_inc_deref
;
953 case ir_intrinsic_atomic_counter_predecrement
:
954 op
= nir_intrinsic_atomic_counter_pre_dec_deref
;
956 case ir_intrinsic_atomic_counter_add
:
957 op
= nir_intrinsic_atomic_counter_add_deref
;
959 case ir_intrinsic_atomic_counter_and
:
960 op
= nir_intrinsic_atomic_counter_and_deref
;
962 case ir_intrinsic_atomic_counter_or
:
963 op
= nir_intrinsic_atomic_counter_or_deref
;
965 case ir_intrinsic_atomic_counter_xor
:
966 op
= nir_intrinsic_atomic_counter_xor_deref
;
968 case ir_intrinsic_atomic_counter_min
:
969 op
= nir_intrinsic_atomic_counter_min_deref
;
971 case ir_intrinsic_atomic_counter_max
:
972 op
= nir_intrinsic_atomic_counter_max_deref
;
974 case ir_intrinsic_atomic_counter_exchange
:
975 op
= nir_intrinsic_atomic_counter_exchange_deref
;
977 case ir_intrinsic_atomic_counter_comp_swap
:
978 op
= nir_intrinsic_atomic_counter_comp_swap_deref
;
980 case ir_intrinsic_image_load
:
981 op
= nir_intrinsic_image_deref_load
;
983 case ir_intrinsic_image_store
:
984 op
= nir_intrinsic_image_deref_store
;
986 case ir_intrinsic_image_atomic_add
:
987 op
= ir
->return_deref
->type
->is_integer_32_64()
988 ? nir_intrinsic_image_deref_atomic_add
989 : nir_intrinsic_image_deref_atomic_fadd
;
991 case ir_intrinsic_image_atomic_min
:
992 if (ir
->return_deref
->type
== glsl_type::int_type
)
993 op
= nir_intrinsic_image_deref_atomic_imin
;
994 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
995 op
= nir_intrinsic_image_deref_atomic_umin
;
997 unreachable("Invalid type");
999 case ir_intrinsic_image_atomic_max
:
1000 if (ir
->return_deref
->type
== glsl_type::int_type
)
1001 op
= nir_intrinsic_image_deref_atomic_imax
;
1002 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1003 op
= nir_intrinsic_image_deref_atomic_umax
;
1005 unreachable("Invalid type");
1007 case ir_intrinsic_image_atomic_and
:
1008 op
= nir_intrinsic_image_deref_atomic_and
;
1010 case ir_intrinsic_image_atomic_or
:
1011 op
= nir_intrinsic_image_deref_atomic_or
;
1013 case ir_intrinsic_image_atomic_xor
:
1014 op
= nir_intrinsic_image_deref_atomic_xor
;
1016 case ir_intrinsic_image_atomic_exchange
:
1017 op
= nir_intrinsic_image_deref_atomic_exchange
;
1019 case ir_intrinsic_image_atomic_comp_swap
:
1020 op
= nir_intrinsic_image_deref_atomic_comp_swap
;
1022 case ir_intrinsic_image_atomic_inc_wrap
:
1023 op
= nir_intrinsic_image_deref_atomic_inc_wrap
;
1025 case ir_intrinsic_image_atomic_dec_wrap
:
1026 op
= nir_intrinsic_image_deref_atomic_dec_wrap
;
1028 case ir_intrinsic_memory_barrier
:
1029 op
= nir_intrinsic_memory_barrier
;
1031 case ir_intrinsic_image_size
:
1032 op
= nir_intrinsic_image_deref_size
;
1034 case ir_intrinsic_image_samples
:
1035 op
= nir_intrinsic_image_deref_samples
;
1037 case ir_intrinsic_ssbo_store
:
1038 op
= nir_intrinsic_store_ssbo
;
1040 case ir_intrinsic_ssbo_load
:
1041 op
= nir_intrinsic_load_ssbo
;
1043 case ir_intrinsic_ssbo_atomic_add
:
1044 op
= ir
->return_deref
->type
->is_integer_32_64()
1045 ? nir_intrinsic_ssbo_atomic_add
: nir_intrinsic_ssbo_atomic_fadd
;
1047 case ir_intrinsic_ssbo_atomic_and
:
1048 op
= nir_intrinsic_ssbo_atomic_and
;
1050 case ir_intrinsic_ssbo_atomic_or
:
1051 op
= nir_intrinsic_ssbo_atomic_or
;
1053 case ir_intrinsic_ssbo_atomic_xor
:
1054 op
= nir_intrinsic_ssbo_atomic_xor
;
1056 case ir_intrinsic_ssbo_atomic_min
:
1057 assert(ir
->return_deref
);
1058 if (ir
->return_deref
->type
== glsl_type::int_type
)
1059 op
= nir_intrinsic_ssbo_atomic_imin
;
1060 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1061 op
= nir_intrinsic_ssbo_atomic_umin
;
1062 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1063 op
= nir_intrinsic_ssbo_atomic_fmin
;
1065 unreachable("Invalid type");
1067 case ir_intrinsic_ssbo_atomic_max
:
1068 assert(ir
->return_deref
);
1069 if (ir
->return_deref
->type
== glsl_type::int_type
)
1070 op
= nir_intrinsic_ssbo_atomic_imax
;
1071 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1072 op
= nir_intrinsic_ssbo_atomic_umax
;
1073 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1074 op
= nir_intrinsic_ssbo_atomic_fmax
;
1076 unreachable("Invalid type");
1078 case ir_intrinsic_ssbo_atomic_exchange
:
1079 op
= nir_intrinsic_ssbo_atomic_exchange
;
1081 case ir_intrinsic_ssbo_atomic_comp_swap
:
1082 op
= ir
->return_deref
->type
->is_integer_32_64()
1083 ? nir_intrinsic_ssbo_atomic_comp_swap
1084 : nir_intrinsic_ssbo_atomic_fcomp_swap
;
1086 case ir_intrinsic_shader_clock
:
1087 op
= nir_intrinsic_shader_clock
;
1089 case ir_intrinsic_begin_invocation_interlock
:
1090 op
= nir_intrinsic_begin_invocation_interlock
;
1092 case ir_intrinsic_end_invocation_interlock
:
1093 op
= nir_intrinsic_end_invocation_interlock
;
1095 case ir_intrinsic_group_memory_barrier
:
1096 op
= nir_intrinsic_group_memory_barrier
;
1098 case ir_intrinsic_memory_barrier_atomic_counter
:
1099 op
= nir_intrinsic_memory_barrier_atomic_counter
;
1101 case ir_intrinsic_memory_barrier_buffer
:
1102 op
= nir_intrinsic_memory_barrier_buffer
;
1104 case ir_intrinsic_memory_barrier_image
:
1105 op
= nir_intrinsic_memory_barrier_image
;
1107 case ir_intrinsic_memory_barrier_shared
:
1108 op
= nir_intrinsic_memory_barrier_shared
;
1110 case ir_intrinsic_shared_load
:
1111 op
= nir_intrinsic_load_shared
;
1113 case ir_intrinsic_shared_store
:
1114 op
= nir_intrinsic_store_shared
;
1116 case ir_intrinsic_shared_atomic_add
:
1117 op
= ir
->return_deref
->type
->is_integer_32_64()
1118 ? nir_intrinsic_shared_atomic_add
1119 : nir_intrinsic_shared_atomic_fadd
;
1121 case ir_intrinsic_shared_atomic_and
:
1122 op
= nir_intrinsic_shared_atomic_and
;
1124 case ir_intrinsic_shared_atomic_or
:
1125 op
= nir_intrinsic_shared_atomic_or
;
1127 case ir_intrinsic_shared_atomic_xor
:
1128 op
= nir_intrinsic_shared_atomic_xor
;
1130 case ir_intrinsic_shared_atomic_min
:
1131 assert(ir
->return_deref
);
1132 if (ir
->return_deref
->type
== glsl_type::int_type
)
1133 op
= nir_intrinsic_shared_atomic_imin
;
1134 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1135 op
= nir_intrinsic_shared_atomic_umin
;
1136 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1137 op
= nir_intrinsic_shared_atomic_fmin
;
1139 unreachable("Invalid type");
1141 case ir_intrinsic_shared_atomic_max
:
1142 assert(ir
->return_deref
);
1143 if (ir
->return_deref
->type
== glsl_type::int_type
)
1144 op
= nir_intrinsic_shared_atomic_imax
;
1145 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1146 op
= nir_intrinsic_shared_atomic_umax
;
1147 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1148 op
= nir_intrinsic_shared_atomic_fmax
;
1150 unreachable("Invalid type");
1152 case ir_intrinsic_shared_atomic_exchange
:
1153 op
= nir_intrinsic_shared_atomic_exchange
;
1155 case ir_intrinsic_shared_atomic_comp_swap
:
1156 op
= ir
->return_deref
->type
->is_integer_32_64()
1157 ? nir_intrinsic_shared_atomic_comp_swap
1158 : nir_intrinsic_shared_atomic_fcomp_swap
;
1160 case ir_intrinsic_vote_any
:
1161 op
= nir_intrinsic_vote_any
;
1163 case ir_intrinsic_vote_all
:
1164 op
= nir_intrinsic_vote_all
;
1166 case ir_intrinsic_vote_eq
:
1167 op
= nir_intrinsic_vote_ieq
;
1169 case ir_intrinsic_ballot
:
1170 op
= nir_intrinsic_ballot
;
1172 case ir_intrinsic_read_invocation
:
1173 op
= nir_intrinsic_read_invocation
;
1175 case ir_intrinsic_read_first_invocation
:
1176 op
= nir_intrinsic_read_first_invocation
;
1178 case ir_intrinsic_helper_invocation
:
1179 op
= nir_intrinsic_is_helper_invocation
;
1182 unreachable("not reached");
1185 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
1186 nir_ssa_def
*ret
= &instr
->dest
.ssa
;
1189 case nir_intrinsic_deref_atomic_add
:
1190 case nir_intrinsic_deref_atomic_imin
:
1191 case nir_intrinsic_deref_atomic_umin
:
1192 case nir_intrinsic_deref_atomic_imax
:
1193 case nir_intrinsic_deref_atomic_umax
:
1194 case nir_intrinsic_deref_atomic_and
:
1195 case nir_intrinsic_deref_atomic_or
:
1196 case nir_intrinsic_deref_atomic_xor
:
1197 case nir_intrinsic_deref_atomic_exchange
:
1198 case nir_intrinsic_deref_atomic_comp_swap
:
1199 case nir_intrinsic_deref_atomic_fadd
:
1200 case nir_intrinsic_deref_atomic_fmin
:
1201 case nir_intrinsic_deref_atomic_fmax
:
1202 case nir_intrinsic_deref_atomic_fcomp_swap
: {
1203 int param_count
= ir
->actual_parameters
.length();
1204 assert(param_count
== 2 || param_count
== 3);
1207 exec_node
*param
= ir
->actual_parameters
.get_head();
1208 ir_rvalue
*rvalue
= (ir_rvalue
*) param
;
1209 ir_dereference
*deref
= rvalue
->as_dereference();
1210 ir_swizzle
*swizzle
= NULL
;
1212 /* We may have a swizzle to pick off a single vec4 component */
1213 swizzle
= rvalue
->as_swizzle();
1214 assert(swizzle
&& swizzle
->type
->vector_elements
== 1);
1215 deref
= swizzle
->val
->as_dereference();
1218 nir_deref_instr
*nir_deref
= evaluate_deref(deref
);
1220 nir_deref
= nir_build_deref_array_imm(&b
, nir_deref
,
1223 instr
->src
[0] = nir_src_for_ssa(&nir_deref
->dest
.ssa
);
1225 nir_intrinsic_set_access(instr
, deref_get_qualifier(nir_deref
));
1227 /* data1 parameter (this is always present) */
1228 param
= param
->get_next();
1229 ir_instruction
*inst
= (ir_instruction
*) param
;
1230 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1232 /* data2 parameter (only with atomic_comp_swap) */
1233 if (param_count
== 3) {
1234 assert(op
== nir_intrinsic_deref_atomic_comp_swap
||
1235 op
== nir_intrinsic_deref_atomic_fcomp_swap
);
1236 param
= param
->get_next();
1237 inst
= (ir_instruction
*) param
;
1238 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1242 assert(ir
->return_deref
);
1243 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1244 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1245 nir_builder_instr_insert(&b
, &instr
->instr
);
1248 case nir_intrinsic_atomic_counter_read_deref
:
1249 case nir_intrinsic_atomic_counter_inc_deref
:
1250 case nir_intrinsic_atomic_counter_pre_dec_deref
:
1251 case nir_intrinsic_atomic_counter_add_deref
:
1252 case nir_intrinsic_atomic_counter_min_deref
:
1253 case nir_intrinsic_atomic_counter_max_deref
:
1254 case nir_intrinsic_atomic_counter_and_deref
:
1255 case nir_intrinsic_atomic_counter_or_deref
:
1256 case nir_intrinsic_atomic_counter_xor_deref
:
1257 case nir_intrinsic_atomic_counter_exchange_deref
:
1258 case nir_intrinsic_atomic_counter_comp_swap_deref
: {
1259 /* Set the counter variable dereference. */
1260 exec_node
*param
= ir
->actual_parameters
.get_head();
1261 ir_dereference
*counter
= (ir_dereference
*)param
;
1263 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(counter
)->dest
.ssa
);
1264 param
= param
->get_next();
1266 /* Set the intrinsic destination. */
1267 if (ir
->return_deref
) {
1268 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1271 /* Set the intrinsic parameters. */
1272 if (!param
->is_tail_sentinel()) {
1274 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1275 param
= param
->get_next();
1278 if (!param
->is_tail_sentinel()) {
1280 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1281 param
= param
->get_next();
1284 nir_builder_instr_insert(&b
, &instr
->instr
);
1287 case nir_intrinsic_image_deref_load
:
1288 case nir_intrinsic_image_deref_store
:
1289 case nir_intrinsic_image_deref_atomic_add
:
1290 case nir_intrinsic_image_deref_atomic_imin
:
1291 case nir_intrinsic_image_deref_atomic_umin
:
1292 case nir_intrinsic_image_deref_atomic_imax
:
1293 case nir_intrinsic_image_deref_atomic_umax
:
1294 case nir_intrinsic_image_deref_atomic_and
:
1295 case nir_intrinsic_image_deref_atomic_or
:
1296 case nir_intrinsic_image_deref_atomic_xor
:
1297 case nir_intrinsic_image_deref_atomic_exchange
:
1298 case nir_intrinsic_image_deref_atomic_comp_swap
:
1299 case nir_intrinsic_image_deref_atomic_fadd
:
1300 case nir_intrinsic_image_deref_samples
:
1301 case nir_intrinsic_image_deref_size
:
1302 case nir_intrinsic_image_deref_atomic_inc_wrap
:
1303 case nir_intrinsic_image_deref_atomic_dec_wrap
: {
1304 nir_ssa_undef_instr
*instr_undef
=
1305 nir_ssa_undef_instr_create(shader
, 1, 32);
1306 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
1308 /* Set the image variable dereference. */
1309 exec_node
*param
= ir
->actual_parameters
.get_head();
1310 ir_dereference
*image
= (ir_dereference
*)param
;
1311 nir_deref_instr
*deref
= evaluate_deref(image
);
1312 const glsl_type
*type
= deref
->type
;
1314 nir_intrinsic_set_access(instr
, deref_get_qualifier(deref
));
1316 instr
->src
[0] = nir_src_for_ssa(&deref
->dest
.ssa
);
1317 param
= param
->get_next();
1319 /* Set the intrinsic destination. */
1320 if (ir
->return_deref
) {
1321 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
1322 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1323 num_components
, 32, NULL
);
1326 if (op
== nir_intrinsic_image_deref_size
) {
1327 instr
->num_components
= instr
->dest
.ssa
.num_components
;
1328 } else if (op
== nir_intrinsic_image_deref_load
||
1329 op
== nir_intrinsic_image_deref_store
) {
1330 instr
->num_components
= 4;
1333 if (op
== nir_intrinsic_image_deref_size
||
1334 op
== nir_intrinsic_image_deref_samples
) {
1335 nir_builder_instr_insert(&b
, &instr
->instr
);
1339 /* Set the address argument, extending the coordinate vector to four
1342 nir_ssa_def
*src_addr
=
1343 evaluate_rvalue((ir_dereference
*)param
);
1344 nir_ssa_def
*srcs
[4];
1346 for (int i
= 0; i
< 4; i
++) {
1347 if (i
< type
->coordinate_components())
1348 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
1350 srcs
[i
] = &instr_undef
->def
;
1353 instr
->src
[1] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
1354 param
= param
->get_next();
1356 /* Set the sample argument, which is undefined for single-sample
1359 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
1361 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1362 param
= param
->get_next();
1364 instr
->src
[2] = nir_src_for_ssa(&instr_undef
->def
);
1367 /* Set the intrinsic parameters. */
1368 if (!param
->is_tail_sentinel()) {
1370 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1371 param
= param
->get_next();
1374 if (!param
->is_tail_sentinel()) {
1376 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1377 param
= param
->get_next();
1379 nir_builder_instr_insert(&b
, &instr
->instr
);
1382 case nir_intrinsic_memory_barrier
:
1383 case nir_intrinsic_group_memory_barrier
:
1384 case nir_intrinsic_memory_barrier_atomic_counter
:
1385 case nir_intrinsic_memory_barrier_buffer
:
1386 case nir_intrinsic_memory_barrier_image
:
1387 case nir_intrinsic_memory_barrier_shared
:
1388 nir_builder_instr_insert(&b
, &instr
->instr
);
1390 case nir_intrinsic_shader_clock
:
1391 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
1392 instr
->num_components
= 2;
1393 nir_builder_instr_insert(&b
, &instr
->instr
);
1395 case nir_intrinsic_begin_invocation_interlock
:
1396 nir_builder_instr_insert(&b
, &instr
->instr
);
1398 case nir_intrinsic_end_invocation_interlock
:
1399 nir_builder_instr_insert(&b
, &instr
->instr
);
1401 case nir_intrinsic_store_ssbo
: {
1402 exec_node
*param
= ir
->actual_parameters
.get_head();
1403 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1405 param
= param
->get_next();
1406 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1408 param
= param
->get_next();
1409 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1411 param
= param
->get_next();
1412 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1415 nir_ssa_def
*nir_val
= evaluate_rvalue(val
);
1416 if (val
->type
->is_boolean())
1417 nir_val
= nir_b2i32(&b
, nir_val
);
1419 instr
->src
[0] = nir_src_for_ssa(nir_val
);
1420 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
1421 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
1422 intrinsic_set_std430_align(instr
, val
->type
);
1423 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1424 instr
->num_components
= val
->type
->vector_elements
;
1426 nir_builder_instr_insert(&b
, &instr
->instr
);
1429 case nir_intrinsic_load_ssbo
: {
1430 exec_node
*param
= ir
->actual_parameters
.get_head();
1431 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1433 param
= param
->get_next();
1434 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1436 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1437 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1439 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1440 instr
->num_components
= type
->vector_elements
;
1441 intrinsic_set_std430_align(instr
, type
);
1443 /* Setup destination register */
1444 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
1445 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1446 type
->vector_elements
, bit_size
, NULL
);
1448 /* Insert the created nir instruction now since in the case of boolean
1449 * result we will need to emit another instruction after it
1451 nir_builder_instr_insert(&b
, &instr
->instr
);
1454 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1455 * consider a true boolean to be ~0. Fix this up with a != 0
1458 if (type
->is_boolean())
1459 ret
= nir_i2b(&b
, &instr
->dest
.ssa
);
1462 case nir_intrinsic_ssbo_atomic_add
:
1463 case nir_intrinsic_ssbo_atomic_imin
:
1464 case nir_intrinsic_ssbo_atomic_umin
:
1465 case nir_intrinsic_ssbo_atomic_imax
:
1466 case nir_intrinsic_ssbo_atomic_umax
:
1467 case nir_intrinsic_ssbo_atomic_and
:
1468 case nir_intrinsic_ssbo_atomic_or
:
1469 case nir_intrinsic_ssbo_atomic_xor
:
1470 case nir_intrinsic_ssbo_atomic_exchange
:
1471 case nir_intrinsic_ssbo_atomic_comp_swap
:
1472 case nir_intrinsic_ssbo_atomic_fadd
:
1473 case nir_intrinsic_ssbo_atomic_fmin
:
1474 case nir_intrinsic_ssbo_atomic_fmax
:
1475 case nir_intrinsic_ssbo_atomic_fcomp_swap
: {
1476 int param_count
= ir
->actual_parameters
.length();
1477 assert(param_count
== 3 || param_count
== 4);
1480 exec_node
*param
= ir
->actual_parameters
.get_head();
1481 ir_instruction
*inst
= (ir_instruction
*) param
;
1482 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1485 param
= param
->get_next();
1486 inst
= (ir_instruction
*) param
;
1487 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1489 /* data1 parameter (this is always present) */
1490 param
= param
->get_next();
1491 inst
= (ir_instruction
*) param
;
1492 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1494 /* data2 parameter (only with atomic_comp_swap) */
1495 if (param_count
== 4) {
1496 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
||
1497 op
== nir_intrinsic_ssbo_atomic_fcomp_swap
);
1498 param
= param
->get_next();
1499 inst
= (ir_instruction
*) param
;
1500 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1504 assert(ir
->return_deref
);
1505 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1506 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1507 nir_builder_instr_insert(&b
, &instr
->instr
);
1510 case nir_intrinsic_load_shared
: {
1511 exec_node
*param
= ir
->actual_parameters
.get_head();
1512 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1514 nir_intrinsic_set_base(instr
, 0);
1515 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1517 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1518 instr
->num_components
= type
->vector_elements
;
1519 intrinsic_set_std430_align(instr
, type
);
1521 /* Setup destination register */
1522 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
1523 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1524 type
->vector_elements
, bit_size
, NULL
);
1526 nir_builder_instr_insert(&b
, &instr
->instr
);
1528 /* The value in shared memory is a 32-bit value */
1529 if (type
->is_boolean())
1530 ret
= nir_i2b(&b
, &instr
->dest
.ssa
);
1533 case nir_intrinsic_store_shared
: {
1534 exec_node
*param
= ir
->actual_parameters
.get_head();
1535 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1537 param
= param
->get_next();
1538 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1540 param
= param
->get_next();
1541 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1544 nir_intrinsic_set_base(instr
, 0);
1545 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1547 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1549 nir_ssa_def
*nir_val
= evaluate_rvalue(val
);
1550 /* The value in shared memory is a 32-bit value */
1551 if (val
->type
->is_boolean())
1552 nir_val
= nir_b2i32(&b
, nir_val
);
1554 instr
->src
[0] = nir_src_for_ssa(nir_val
);
1555 instr
->num_components
= val
->type
->vector_elements
;
1556 intrinsic_set_std430_align(instr
, val
->type
);
1558 nir_builder_instr_insert(&b
, &instr
->instr
);
1561 case nir_intrinsic_shared_atomic_add
:
1562 case nir_intrinsic_shared_atomic_imin
:
1563 case nir_intrinsic_shared_atomic_umin
:
1564 case nir_intrinsic_shared_atomic_imax
:
1565 case nir_intrinsic_shared_atomic_umax
:
1566 case nir_intrinsic_shared_atomic_and
:
1567 case nir_intrinsic_shared_atomic_or
:
1568 case nir_intrinsic_shared_atomic_xor
:
1569 case nir_intrinsic_shared_atomic_exchange
:
1570 case nir_intrinsic_shared_atomic_comp_swap
:
1571 case nir_intrinsic_shared_atomic_fadd
:
1572 case nir_intrinsic_shared_atomic_fmin
:
1573 case nir_intrinsic_shared_atomic_fmax
:
1574 case nir_intrinsic_shared_atomic_fcomp_swap
: {
1575 int param_count
= ir
->actual_parameters
.length();
1576 assert(param_count
== 2 || param_count
== 3);
1579 exec_node
*param
= ir
->actual_parameters
.get_head();
1580 ir_instruction
*inst
= (ir_instruction
*) param
;
1581 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1583 /* data1 parameter (this is always present) */
1584 param
= param
->get_next();
1585 inst
= (ir_instruction
*) param
;
1586 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1588 /* data2 parameter (only with atomic_comp_swap) */
1589 if (param_count
== 3) {
1590 assert(op
== nir_intrinsic_shared_atomic_comp_swap
||
1591 op
== nir_intrinsic_shared_atomic_fcomp_swap
);
1592 param
= param
->get_next();
1593 inst
= (ir_instruction
*) param
;
1595 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1599 assert(ir
->return_deref
);
1600 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1601 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1602 ir
->return_deref
->type
->vector_elements
,
1604 nir_builder_instr_insert(&b
, &instr
->instr
);
1607 case nir_intrinsic_vote_any
:
1608 case nir_intrinsic_vote_all
:
1609 case nir_intrinsic_vote_ieq
: {
1610 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 1, NULL
);
1611 instr
->num_components
= 1;
1613 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1614 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1616 nir_builder_instr_insert(&b
, &instr
->instr
);
1620 case nir_intrinsic_ballot
: {
1621 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1622 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1623 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1625 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1626 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1628 nir_builder_instr_insert(&b
, &instr
->instr
);
1631 case nir_intrinsic_read_invocation
: {
1632 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1633 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1634 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1636 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1637 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1639 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1640 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1642 nir_builder_instr_insert(&b
, &instr
->instr
);
1645 case nir_intrinsic_read_first_invocation
: {
1646 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1647 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1648 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1650 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1651 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1653 nir_builder_instr_insert(&b
, &instr
->instr
);
1656 case nir_intrinsic_is_helper_invocation
: {
1657 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 1, NULL
);
1658 instr
->num_components
= 1;
1659 nir_builder_instr_insert(&b
, &instr
->instr
);
1663 unreachable("not reached");
1666 if (ir
->return_deref
)
1667 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), ret
, ~0);
1672 struct hash_entry
*entry
=
1673 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1675 nir_function
*callee
= (nir_function
*) entry
->data
;
1677 nir_call_instr
*call
= nir_call_instr_create(this->shader
, callee
);
1680 nir_deref_instr
*ret_deref
= NULL
;
1681 if (ir
->return_deref
) {
1682 nir_variable
*ret_tmp
=
1683 nir_local_variable_create(this->impl
, ir
->return_deref
->type
,
1685 ret_deref
= nir_build_deref_var(&b
, ret_tmp
);
1686 call
->params
[i
++] = nir_src_for_ssa(&ret_deref
->dest
.ssa
);
1689 foreach_two_lists(formal_node
, &ir
->callee
->parameters
,
1690 actual_node
, &ir
->actual_parameters
) {
1691 ir_rvalue
*param_rvalue
= (ir_rvalue
*) actual_node
;
1692 ir_variable
*sig_param
= (ir_variable
*) formal_node
;
1694 if (sig_param
->data
.mode
== ir_var_function_out
) {
1695 nir_deref_instr
*out_deref
= evaluate_deref(param_rvalue
);
1696 call
->params
[i
] = nir_src_for_ssa(&out_deref
->dest
.ssa
);
1697 } else if (sig_param
->data
.mode
== ir_var_function_in
) {
1698 nir_ssa_def
*val
= evaluate_rvalue(param_rvalue
);
1699 nir_src src
= nir_src_for_ssa(val
);
1701 nir_src_copy(&call
->params
[i
], &src
, call
);
1702 } else if (sig_param
->data
.mode
== ir_var_function_inout
) {
1703 unreachable("unimplemented: inout parameters");
1709 nir_builder_instr_insert(&b
, &call
->instr
);
1711 if (ir
->return_deref
)
1712 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), nir_load_deref(&b
, ret_deref
), ~0);
1716 nir_visitor::visit(ir_assignment
*ir
)
1718 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1720 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1721 ir
->lhs
->variable_referenced()->data
.precise
;
1723 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1724 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1725 nir_deref_instr
*lhs
= evaluate_deref(ir
->lhs
);
1726 nir_deref_instr
*rhs
= evaluate_deref(ir
->rhs
);
1727 enum gl_access_qualifier lhs_qualifiers
= deref_get_qualifier(lhs
);
1728 enum gl_access_qualifier rhs_qualifiers
= deref_get_qualifier(rhs
);
1729 if (ir
->condition
) {
1730 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1731 nir_copy_deref_with_access(&b
, lhs
, rhs
, lhs_qualifiers
,
1733 nir_pop_if(&b
, NULL
);
1735 nir_copy_deref_with_access(&b
, lhs
, rhs
, lhs_qualifiers
,
1741 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1743 ir
->lhs
->accept(this);
1744 nir_deref_instr
*lhs_deref
= this->deref
;
1745 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1747 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1748 /* GLSL IR will give us the input to the write-masked assignment in a
1749 * single packed vector. So, for example, if the writemask is xzw, then
1750 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1754 unsigned component
= 0;
1755 for (unsigned i
= 0; i
< 4; i
++) {
1756 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1758 src
= nir_swizzle(&b
, src
, swiz
, num_components
);
1761 enum gl_access_qualifier qualifiers
= deref_get_qualifier(lhs_deref
);
1762 if (ir
->condition
) {
1763 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1764 nir_store_deref_with_access(&b
, lhs_deref
, src
, ir
->write_mask
,
1766 nir_pop_if(&b
, NULL
);
1768 nir_store_deref_with_access(&b
, lhs_deref
, src
, ir
->write_mask
,
1774 * Given an instruction, returns a pointer to its destination or NULL if there
1775 * is no destination.
1777 * Note that this only handles instructions we generate at this level.
1780 get_instr_dest(nir_instr
*instr
)
1782 nir_alu_instr
*alu_instr
;
1783 nir_intrinsic_instr
*intrinsic_instr
;
1784 nir_tex_instr
*tex_instr
;
1786 switch (instr
->type
) {
1787 case nir_instr_type_alu
:
1788 alu_instr
= nir_instr_as_alu(instr
);
1789 return &alu_instr
->dest
.dest
;
1791 case nir_instr_type_intrinsic
:
1792 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1793 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1794 return &intrinsic_instr
->dest
;
1798 case nir_instr_type_tex
:
1799 tex_instr
= nir_instr_as_tex(instr
);
1800 return &tex_instr
->dest
;
1803 unreachable("not reached");
1810 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1813 nir_dest
*dest
= get_instr_dest(instr
);
1816 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1818 nir_builder_instr_insert(&b
, instr
);
1821 assert(dest
->is_ssa
);
1822 this->result
= &dest
->ssa
;
1827 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1830 if (ir
->as_dereference() || ir
->as_constant()) {
1832 * A dereference is being used on the right hand side, which means we
1833 * must emit a variable load.
1836 enum gl_access_qualifier access
= deref_get_qualifier(this->deref
);
1837 this->result
= nir_load_deref_with_access(&b
, this->deref
, access
);
1840 return this->result
;
1844 type_is_float(glsl_base_type type
)
1846 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1847 type
== GLSL_TYPE_FLOAT16
;
1851 type_is_signed(glsl_base_type type
)
1853 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1854 type
== GLSL_TYPE_INT16
;
1858 nir_visitor::visit(ir_expression
*ir
)
1860 /* Some special cases */
1861 switch (ir
->operation
) {
1862 case ir_binop_ubo_load
: {
1863 nir_intrinsic_instr
*load
=
1864 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1865 unsigned bit_size
= ir
->type
->is_boolean() ? 32 :
1866 glsl_get_bit_size(ir
->type
);
1867 load
->num_components
= ir
->type
->vector_elements
;
1868 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1869 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1870 intrinsic_set_std430_align(load
, ir
->type
);
1871 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1874 * In UBO's, a true boolean value is any non-zero value, but we consider
1875 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1878 if (ir
->type
->is_boolean())
1879 this->result
= nir_i2b(&b
, &load
->dest
.ssa
);
1884 case ir_unop_interpolate_at_centroid
:
1885 case ir_binop_interpolate_at_offset
:
1886 case ir_binop_interpolate_at_sample
: {
1887 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1888 ir_swizzle
*swizzle
= NULL
;
1890 /* the api does not allow a swizzle here, but the varying packing code
1891 * may have pushed one into here.
1893 swizzle
= ir
->operands
[0]->as_swizzle();
1895 deref
= swizzle
->val
->as_dereference();
1899 deref
->accept(this);
1901 nir_intrinsic_op op
;
1902 if (this->deref
->mode
== nir_var_shader_in
) {
1903 switch (ir
->operation
) {
1904 case ir_unop_interpolate_at_centroid
:
1905 op
= nir_intrinsic_interp_deref_at_centroid
;
1907 case ir_binop_interpolate_at_offset
:
1908 op
= nir_intrinsic_interp_deref_at_offset
;
1910 case ir_binop_interpolate_at_sample
:
1911 op
= nir_intrinsic_interp_deref_at_sample
;
1914 unreachable("Invalid interpolation intrinsic");
1917 /* This case can happen if the vertex shader does not write the
1918 * given varying. In this case, the linker will lower it to a
1919 * global variable. Since interpolating a variable makes no
1920 * sense, we'll just turn it into a load which will probably
1921 * eventually end up as an SSA definition.
1923 assert(this->deref
->mode
== nir_var_shader_temp
);
1924 op
= nir_intrinsic_load_deref
;
1927 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1928 intrin
->num_components
= deref
->type
->vector_elements
;
1929 intrin
->src
[0] = nir_src_for_ssa(&this->deref
->dest
.ssa
);
1931 if (intrin
->intrinsic
== nir_intrinsic_interp_deref_at_offset
||
1932 intrin
->intrinsic
== nir_intrinsic_interp_deref_at_sample
)
1933 intrin
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1935 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1936 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1939 unsigned swiz
[4] = {
1940 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1943 result
= nir_swizzle(&b
, result
, swiz
,
1944 swizzle
->type
->vector_elements
);
1950 case ir_unop_ssbo_unsized_array_length
: {
1951 nir_intrinsic_instr
*intrin
=
1952 nir_intrinsic_instr_create(b
.shader
,
1953 nir_intrinsic_deref_buffer_array_length
);
1955 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1956 intrin
->src
[0] = nir_src_for_ssa(&evaluate_deref(deref
)->dest
.ssa
);
1958 add_instr(&intrin
->instr
, 1, 32);
1966 nir_ssa_def
*srcs
[4];
1967 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1968 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1970 glsl_base_type types
[4];
1971 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1972 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1974 glsl_base_type out_type
= ir
->type
->base_type
;
1976 switch (ir
->operation
) {
1977 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1978 case ir_unop_logic_not
:
1979 result
= nir_inot(&b
, srcs
[0]);
1982 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1983 : nir_ineg(&b
, srcs
[0]);
1986 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1987 : nir_iabs(&b
, srcs
[0]);
1989 case ir_unop_saturate
:
1990 assert(type_is_float(types
[0]));
1991 result
= nir_fsat(&b
, srcs
[0]);
1994 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1995 : nir_isign(&b
, srcs
[0]);
1997 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1998 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1999 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
2000 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
2001 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
2002 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
2003 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
2039 case ir_unop_i642u64
:
2040 case ir_unop_u642i64
: {
2041 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
2042 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
2043 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
2044 nir_rounding_mode_undef
),
2045 srcs
[0], NULL
, NULL
, NULL
);
2046 /* b2i and b2f don't have fixed bit-size versions so the builder will
2047 * just assume 32 and we have to fix it up here.
2049 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
2053 case ir_unop_bitcast_i2f
:
2054 case ir_unop_bitcast_f2i
:
2055 case ir_unop_bitcast_u2f
:
2056 case ir_unop_bitcast_f2u
:
2057 case ir_unop_bitcast_i642d
:
2058 case ir_unop_bitcast_d2i64
:
2059 case ir_unop_bitcast_u642d
:
2060 case ir_unop_bitcast_d2u64
:
2061 case ir_unop_subroutine_to_int
:
2063 result
= nir_mov(&b
, srcs
[0]);
2065 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
2066 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
2067 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
2068 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
2069 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
2070 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
2071 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
2072 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
2073 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
2074 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
2075 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
2076 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
2077 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
2078 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
2079 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
2080 case ir_unop_pack_snorm_2x16
:
2081 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
2083 case ir_unop_pack_snorm_4x8
:
2084 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
2086 case ir_unop_pack_unorm_2x16
:
2087 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
2089 case ir_unop_pack_unorm_4x8
:
2090 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
2092 case ir_unop_pack_half_2x16
:
2093 result
= nir_pack_half_2x16(&b
, srcs
[0]);
2095 case ir_unop_unpack_snorm_2x16
:
2096 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
2098 case ir_unop_unpack_snorm_4x8
:
2099 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
2101 case ir_unop_unpack_unorm_2x16
:
2102 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
2104 case ir_unop_unpack_unorm_4x8
:
2105 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
2107 case ir_unop_unpack_half_2x16
:
2108 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
2110 case ir_unop_pack_sampler_2x32
:
2111 case ir_unop_pack_image_2x32
:
2112 case ir_unop_pack_double_2x32
:
2113 case ir_unop_pack_int_2x32
:
2114 case ir_unop_pack_uint_2x32
:
2115 result
= nir_pack_64_2x32(&b
, srcs
[0]);
2117 case ir_unop_unpack_sampler_2x32
:
2118 case ir_unop_unpack_image_2x32
:
2119 case ir_unop_unpack_double_2x32
:
2120 case ir_unop_unpack_int_2x32
:
2121 case ir_unop_unpack_uint_2x32
:
2122 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
2124 case ir_unop_bitfield_reverse
:
2125 result
= nir_bitfield_reverse(&b
, srcs
[0]);
2127 case ir_unop_bit_count
:
2128 result
= nir_bit_count(&b
, srcs
[0]);
2130 case ir_unop_find_msb
:
2132 case GLSL_TYPE_UINT
:
2133 result
= nir_ufind_msb(&b
, srcs
[0]);
2136 result
= nir_ifind_msb(&b
, srcs
[0]);
2139 unreachable("Invalid type for findMSB()");
2142 case ir_unop_find_lsb
:
2143 result
= nir_find_lsb(&b
, srcs
[0]);
2147 switch (ir
->type
->vector_elements
) {
2149 switch (ir
->operands
[0]->type
->vector_elements
) {
2150 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
2151 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
2152 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
2153 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
2154 default: unreachable("not reached");
2158 switch (ir
->operands
[0]->type
->vector_elements
) {
2159 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
2160 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
2161 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
2162 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
2163 default: unreachable("not reached");
2167 switch (ir
->operands
[0]->type
->vector_elements
) {
2168 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
2169 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
2170 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
2171 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
2172 default: unreachable("not reached");
2176 switch (ir
->operands
[0]->type
->vector_elements
) {
2177 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
2178 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
2179 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
2180 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
2181 default: unreachable("not reached");
2185 unreachable("not reached");
2188 case ir_unop_get_buffer_size
: {
2189 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
2191 nir_intrinsic_get_buffer_size
);
2192 load
->num_components
= ir
->type
->vector_elements
;
2193 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
2194 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2195 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
2200 result
= nir_atan(&b
, srcs
[0]);
2204 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
2205 : nir_iadd(&b
, srcs
[0], srcs
[1]);
2208 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
2209 : nir_isub(&b
, srcs
[0], srcs
[1]);
2212 if (type_is_float(out_type
))
2213 result
= nir_fmul(&b
, srcs
[0], srcs
[1]);
2214 else if (out_type
== GLSL_TYPE_INT64
&&
2215 (ir
->operands
[0]->type
->base_type
== GLSL_TYPE_INT
||
2216 ir
->operands
[1]->type
->base_type
== GLSL_TYPE_INT
))
2217 result
= nir_imul_2x32_64(&b
, srcs
[0], srcs
[1]);
2218 else if (out_type
== GLSL_TYPE_UINT64
&&
2219 (ir
->operands
[0]->type
->base_type
== GLSL_TYPE_UINT
||
2220 ir
->operands
[1]->type
->base_type
== GLSL_TYPE_UINT
))
2221 result
= nir_umul_2x32_64(&b
, srcs
[0], srcs
[1]);
2223 result
= nir_imul(&b
, srcs
[0], srcs
[1]);
2226 if (type_is_float(out_type
))
2227 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
2228 else if (type_is_signed(out_type
))
2229 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
2231 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
2234 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
2235 : nir_umod(&b
, srcs
[0], srcs
[1]);
2238 if (type_is_float(out_type
))
2239 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
2240 else if (type_is_signed(out_type
))
2241 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
2243 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
2246 if (type_is_float(out_type
))
2247 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
2248 else if (type_is_signed(out_type
))
2249 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
2251 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
2253 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
2254 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
2255 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
2256 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
2257 case ir_binop_logic_and
:
2258 result
= nir_iand(&b
, srcs
[0], srcs
[1]);
2260 case ir_binop_logic_or
:
2261 result
= nir_ior(&b
, srcs
[0], srcs
[1]);
2263 case ir_binop_logic_xor
:
2264 result
= nir_ixor(&b
, srcs
[0], srcs
[1]);
2266 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
2267 case ir_binop_rshift
:
2268 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
2269 : nir_ushr(&b
, srcs
[0], srcs
[1]);
2271 case ir_binop_imul_high
:
2272 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
2273 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
2275 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
2276 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
2278 if (type_is_float(types
[0]))
2279 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
2280 else if (type_is_signed(types
[0]))
2281 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
2283 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
2285 case ir_binop_gequal
:
2286 if (type_is_float(types
[0]))
2287 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
2288 else if (type_is_signed(types
[0]))
2289 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
2291 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
2293 case ir_binop_equal
:
2294 if (type_is_float(types
[0]))
2295 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
2297 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
2299 case ir_binop_nequal
:
2300 if (type_is_float(types
[0]))
2301 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
2303 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
2305 case ir_binop_all_equal
:
2306 if (type_is_float(types
[0])) {
2307 switch (ir
->operands
[0]->type
->vector_elements
) {
2308 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
2309 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
2310 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
2311 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
2313 unreachable("not reached");
2316 switch (ir
->operands
[0]->type
->vector_elements
) {
2317 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
2318 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
2319 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
2320 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
2322 unreachable("not reached");
2326 case ir_binop_any_nequal
:
2327 if (type_is_float(types
[0])) {
2328 switch (ir
->operands
[0]->type
->vector_elements
) {
2329 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
2330 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
2331 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
2332 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
2334 unreachable("not reached");
2337 switch (ir
->operands
[0]->type
->vector_elements
) {
2338 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
2339 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
2340 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
2341 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
2343 unreachable("not reached");
2348 switch (ir
->operands
[0]->type
->vector_elements
) {
2349 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
2350 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
2351 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
2353 unreachable("not reached");
2356 case ir_binop_vector_extract
: {
2357 result
= nir_channel(&b
, srcs
[0], 0);
2358 for (unsigned i
= 1; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
2359 nir_ssa_def
*swizzled
= nir_channel(&b
, srcs
[0], i
);
2360 result
= nir_bcsel(&b
, nir_ieq(&b
, srcs
[1], nir_imm_int(&b
, i
)),
2366 case ir_binop_atan2
:
2367 result
= nir_atan2(&b
, srcs
[0], srcs
[1]);
2370 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
2372 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
2375 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
2378 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
2380 case ir_triop_bitfield_extract
:
2381 result
= (out_type
== GLSL_TYPE_INT
) ?
2382 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
2383 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
2385 case ir_quadop_bitfield_insert
:
2386 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
2388 case ir_quadop_vector
:
2389 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
2393 unreachable("not reached");
2398 nir_visitor::visit(ir_swizzle
*ir
)
2400 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
2401 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
2402 ir
->type
->vector_elements
);
2406 nir_visitor::visit(ir_texture
*ir
)
2413 num_srcs
= 1; /* coordinate */
2418 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
2419 num_srcs
= 2; /* coordinate, bias/lod */
2423 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
2429 if (ir
->lod_info
.lod
!= NULL
)
2430 num_srcs
= 2; /* coordinate, lod */
2432 num_srcs
= 1; /* coordinate */
2436 op
= nir_texop_txf_ms
;
2437 num_srcs
= 2; /* coordinate, sample_index */
2442 if (ir
->lod_info
.lod
!= NULL
)
2443 num_srcs
= 1; /* lod */
2450 num_srcs
= 1; /* coordinate */
2455 num_srcs
= 1; /* coordinate */
2458 case ir_query_levels
:
2459 op
= nir_texop_query_levels
;
2463 case ir_texture_samples
:
2464 op
= nir_texop_texture_samples
;
2468 case ir_samples_identical
:
2469 op
= nir_texop_samples_identical
;
2470 num_srcs
= 1; /* coordinate */
2474 unreachable("not reached");
2477 if (ir
->projector
!= NULL
)
2479 if (ir
->shadow_comparator
!= NULL
)
2481 /* offsets are constants we store inside nir_tex_intrs.offsets */
2482 if (ir
->offset
!= NULL
&& !ir
->offset
->type
->is_array())
2485 /* Add one for the texture deref */
2488 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2491 instr
->sampler_dim
=
2492 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2493 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2494 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2495 if (instr
->is_shadow
)
2496 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2497 switch (ir
->type
->base_type
) {
2498 case GLSL_TYPE_FLOAT
:
2499 instr
->dest_type
= nir_type_float
;
2502 instr
->dest_type
= nir_type_int
;
2504 case GLSL_TYPE_BOOL
:
2505 case GLSL_TYPE_UINT
:
2506 instr
->dest_type
= nir_type_uint
;
2509 unreachable("not reached");
2512 nir_deref_instr
*sampler_deref
= evaluate_deref(ir
->sampler
);
2514 /* check for bindless handles */
2515 if (sampler_deref
->mode
!= nir_var_uniform
||
2516 nir_deref_instr_get_variable(sampler_deref
)->data
.bindless
) {
2517 nir_ssa_def
*load
= nir_load_deref(&b
, sampler_deref
);
2518 instr
->src
[0].src
= nir_src_for_ssa(load
);
2519 instr
->src
[0].src_type
= nir_tex_src_texture_handle
;
2520 instr
->src
[1].src
= nir_src_for_ssa(load
);
2521 instr
->src
[1].src_type
= nir_tex_src_sampler_handle
;
2523 instr
->src
[0].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2524 instr
->src
[0].src_type
= nir_tex_src_texture_deref
;
2525 instr
->src
[1].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2526 instr
->src
[1].src_type
= nir_tex_src_sampler_deref
;
2529 unsigned src_number
= 2;
2531 if (ir
->coordinate
!= NULL
) {
2532 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2533 instr
->src
[src_number
].src
=
2534 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2535 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2539 if (ir
->projector
!= NULL
) {
2540 instr
->src
[src_number
].src
=
2541 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2542 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2546 if (ir
->shadow_comparator
!= NULL
) {
2547 instr
->src
[src_number
].src
=
2548 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2549 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2553 if (ir
->offset
!= NULL
) {
2554 if (ir
->offset
->type
->is_array()) {
2555 for (int i
= 0; i
< ir
->offset
->type
->array_size(); i
++) {
2556 const ir_constant
*c
=
2557 ir
->offset
->as_constant()->get_array_element(i
);
2559 for (unsigned j
= 0; j
< 2; ++j
) {
2560 int val
= c
->get_int_component(j
);
2561 assert(val
<= 31 && val
>= -32);
2562 instr
->tg4_offsets
[i
][j
] = val
;
2566 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2568 instr
->src
[src_number
].src
=
2569 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2570 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2577 instr
->src
[src_number
].src
=
2578 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2579 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2586 if (ir
->lod_info
.lod
!= NULL
) {
2587 instr
->src
[src_number
].src
=
2588 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2589 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2595 instr
->src
[src_number
].src
=
2596 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2597 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2599 instr
->src
[src_number
].src
=
2600 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2601 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2606 instr
->src
[src_number
].src
=
2607 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2608 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2613 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2620 assert(src_number
== num_srcs
);
2622 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2623 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2627 nir_visitor::visit(ir_constant
*ir
)
2630 * We don't know if this variable is an array or struct that gets
2631 * dereferenced, so do the safe thing an make it a variable with a
2632 * constant initializer and return a dereference.
2636 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2637 var
->data
.read_only
= true;
2638 var
->constant_initializer
= constant_copy(ir
, var
);
2640 this->deref
= nir_build_deref_var(&b
, var
);
2644 nir_visitor::visit(ir_dereference_variable
*ir
)
2646 if (ir
->variable_referenced()->data
.mode
== ir_var_function_out
) {
2647 unsigned i
= (sig
->return_type
!= glsl_type::void_type
) ? 1 : 0;
2649 foreach_in_list(ir_variable
, param
, &sig
->parameters
) {
2650 if (param
== ir
->variable_referenced()) {
2656 this->deref
= nir_build_deref_cast(&b
, nir_load_param(&b
, i
),
2657 nir_var_function_temp
, ir
->type
, 0);
2661 assert(ir
->variable_referenced()->data
.mode
!= ir_var_function_inout
);
2663 struct hash_entry
*entry
=
2664 _mesa_hash_table_search(this->var_table
, ir
->var
);
2666 nir_variable
*var
= (nir_variable
*) entry
->data
;
2668 this->deref
= nir_build_deref_var(&b
, var
);
2672 nir_visitor::visit(ir_dereference_record
*ir
)
2674 ir
->record
->accept(this);
2676 int field_index
= ir
->field_idx
;
2677 assert(field_index
>= 0);
2679 this->deref
= nir_build_deref_struct(&b
, this->deref
, field_index
);
2683 nir_visitor::visit(ir_dereference_array
*ir
)
2685 nir_ssa_def
*index
= evaluate_rvalue(ir
->array_index
);
2687 ir
->array
->accept(this);
2689 this->deref
= nir_build_deref_array(&b
, this->deref
, index
);
2693 nir_visitor::visit(ir_barrier
*)
2695 nir_intrinsic_instr
*instr
=
2696 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2697 nir_builder_instr_insert(&b
, &instr
->instr
);
2701 glsl_float64_funcs_to_nir(struct gl_context
*ctx
,
2702 const nir_shader_compiler_options
*options
)
2704 /* We pretend it's a vertex shader. Ultimately, the stage shouldn't
2705 * matter because we're not optimizing anything here.
2707 struct gl_shader
*sh
= _mesa_new_shader(-1, MESA_SHADER_VERTEX
);
2708 sh
->Source
= float64_source
;
2709 sh
->CompileStatus
= COMPILE_FAILURE
;
2710 _mesa_glsl_compile_shader(ctx
, sh
, false, false, true);
2712 if (!sh
->CompileStatus
) {
2715 "fp64 software impl compile failed:\n%s\nsource:\n%s\n",
2716 sh
->InfoLog
, float64_source
);
2721 nir_shader
*nir
= nir_shader_create(NULL
, MESA_SHADER_VERTEX
, options
, NULL
);
2723 nir_visitor
v1(ctx
, nir
);
2724 nir_function_visitor
v2(&v1
);
2726 visit_exec_list(sh
->ir
, &v1
);
2728 /* _mesa_delete_shader will try to free sh->Source but it's static const */
2730 _mesa_delete_shader(ctx
, sh
);
2732 nir_validate_shader(nir
, "float64_funcs_to_nir");
2734 NIR_PASS_V(nir
, nir_lower_constant_initializers
, nir_var_function_temp
);
2735 NIR_PASS_V(nir
, nir_lower_returns
);
2736 NIR_PASS_V(nir
, nir_inline_functions
);
2737 NIR_PASS_V(nir
, nir_opt_deref
);
2739 /* Do some optimizations to clean up the shader now. By optimizing the
2740 * functions in the library, we avoid having to re-do that work every
2741 * time we inline a copy of a function. Reducing basic blocks also helps
2742 * with compile times.
2744 NIR_PASS_V(nir
, nir_lower_vars_to_ssa
);
2745 NIR_PASS_V(nir
, nir_copy_prop
);
2746 NIR_PASS_V(nir
, nir_opt_dce
);
2747 NIR_PASS_V(nir
, nir_opt_cse
);
2748 NIR_PASS_V(nir
, nir_opt_gcm
, true);
2749 NIR_PASS_V(nir
, nir_opt_peephole_select
, 1, false, false);
2750 NIR_PASS_V(nir
, nir_opt_dce
);