2 * Copyright © 2014 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
24 * Connor Abbott (cwabbott0@gmail.com)
28 #include "float64_glsl.h"
29 #include "glsl_to_nir.h"
30 #include "ir_visitor.h"
31 #include "ir_hierarchical_visitor.h"
33 #include "ir_optimization.h"
35 #include "compiler/nir/nir_control_flow.h"
36 #include "compiler/nir/nir_builder.h"
37 #include "compiler/nir/nir_builtin_builder.h"
38 #include "compiler/nir/nir_deref.h"
39 #include "main/errors.h"
40 #include "main/imports.h"
41 #include "main/mtypes.h"
42 #include "main/shaderobj.h"
43 #include "util/u_math.h"
46 * pass to lower GLSL IR to NIR
48 * This will lower variable dereferences to loads/stores of corresponding
49 * variables in NIR - the variables will be converted to registers in a later
55 class nir_visitor
: public ir_visitor
58 nir_visitor(gl_context
*ctx
, nir_shader
*shader
);
61 virtual void visit(ir_variable
*);
62 virtual void visit(ir_function
*);
63 virtual void visit(ir_function_signature
*);
64 virtual void visit(ir_loop
*);
65 virtual void visit(ir_if
*);
66 virtual void visit(ir_discard
*);
67 virtual void visit(ir_demote
*);
68 virtual void visit(ir_loop_jump
*);
69 virtual void visit(ir_return
*);
70 virtual void visit(ir_call
*);
71 virtual void visit(ir_assignment
*);
72 virtual void visit(ir_emit_vertex
*);
73 virtual void visit(ir_end_primitive
*);
74 virtual void visit(ir_expression
*);
75 virtual void visit(ir_swizzle
*);
76 virtual void visit(ir_texture
*);
77 virtual void visit(ir_constant
*);
78 virtual void visit(ir_dereference_variable
*);
79 virtual void visit(ir_dereference_record
*);
80 virtual void visit(ir_dereference_array
*);
81 virtual void visit(ir_barrier
*);
83 void create_function(ir_function_signature
*ir
);
86 void add_instr(nir_instr
*instr
, unsigned num_components
, unsigned bit_size
);
87 nir_ssa_def
*evaluate_rvalue(ir_rvalue
*ir
);
89 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
**srcs
);
90 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
);
91 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
93 nir_alu_instr
*emit(nir_op op
, unsigned dest_size
, nir_ssa_def
*src1
,
94 nir_ssa_def
*src2
, nir_ssa_def
*src3
);
99 nir_function_impl
*impl
;
101 nir_ssa_def
*result
; /* result of the expression tree last visited */
103 nir_deref_instr
*evaluate_deref(ir_instruction
*ir
);
105 nir_constant
*constant_copy(ir_constant
*ir
, void *mem_ctx
);
107 /* most recent deref instruction created */
108 nir_deref_instr
*deref
;
110 /* whether the IR we're operating on is per-function or global */
113 ir_function_signature
*sig
;
115 /* map of ir_variable -> nir_variable */
116 struct hash_table
*var_table
;
118 /* map of ir_function_signature -> nir_function_overload */
119 struct hash_table
*overload_table
;
123 * This visitor runs before the main visitor, calling create_function() for
124 * each function so that the main visitor can resolve forward references in
128 class nir_function_visitor
: public ir_hierarchical_visitor
131 nir_function_visitor(nir_visitor
*v
) : visitor(v
)
134 virtual ir_visitor_status
visit_enter(ir_function
*);
137 nir_visitor
*visitor
;
140 /* glsl_to_nir can only handle converting certain function paramaters
141 * to NIR. This visitor checks for parameters it can't currently handle.
143 class ir_function_param_visitor
: public ir_hierarchical_visitor
146 ir_function_param_visitor()
151 virtual ir_visitor_status
visit_enter(ir_function_signature
*ir
)
154 if (ir
->is_intrinsic())
155 return visit_continue
;
157 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
158 if (!param
->type
->is_vector() || !param
->type
->is_scalar()) {
163 if (param
->data
.mode
== ir_var_function_inout
) {
169 return visit_continue
;
175 } /* end of anonymous namespace */
179 has_unsupported_function_param(exec_list
*ir
)
181 ir_function_param_visitor visitor
;
182 visit_list_elements(&visitor
, ir
);
183 return visitor
.unsupported
;
187 glsl_to_nir(struct gl_context
*ctx
,
188 const struct gl_shader_program
*shader_prog
,
189 gl_shader_stage stage
,
190 const nir_shader_compiler_options
*options
)
192 struct gl_linked_shader
*sh
= shader_prog
->_LinkedShaders
[stage
];
194 const struct gl_shader_compiler_options
*gl_options
=
195 &ctx
->Const
.ShaderCompilerOptions
[stage
];
197 /* glsl_to_nir can only handle converting certain function paramaters
198 * to NIR. If we find something we can't handle then we get the GLSL IR
199 * opts to remove it before we continue on.
201 * TODO: add missing glsl ir to nir support and remove this loop.
203 while (has_unsupported_function_param(sh
->ir
)) {
204 do_common_optimization(sh
->ir
, true, true, gl_options
,
205 ctx
->Const
.NativeIntegers
);
208 nir_shader
*shader
= nir_shader_create(NULL
, stage
, options
,
211 nir_visitor
v1(ctx
, shader
);
212 nir_function_visitor
v2(&v1
);
214 visit_exec_list(sh
->ir
, &v1
);
216 nir_validate_shader(shader
, "after glsl to nir, before function inline");
218 /* We have to lower away local constant initializers right before we
219 * inline functions. That way they get properly initialized at the top
220 * of the function and not at the top of its caller.
222 nir_lower_constant_initializers(shader
, (nir_variable_mode
)~0);
223 nir_lower_returns(shader
);
224 nir_inline_functions(shader
);
225 nir_opt_deref(shader
);
227 nir_validate_shader(shader
, "after function inlining and return lowering");
229 /* Now that we have inlined everything remove all of the functions except
232 foreach_list_typed_safe(nir_function
, function
, node
, &(shader
)->functions
){
233 if (strcmp("main", function
->name
) != 0) {
234 exec_node_remove(&function
->node
);
238 /* Remap the locations to slots so those requiring two slots will occupy
239 * two locations. For instance, if we have in the IR code a dvec3 attr0 in
240 * location 0 and vec4 attr1 in location 1, in NIR attr0 will use
241 * locations/slots 0 and 1, and attr1 will use location/slot 2 */
242 if (shader
->info
.stage
== MESA_SHADER_VERTEX
)
243 nir_remap_dual_slot_attributes(shader
, &sh
->Program
->DualSlotInputs
);
245 shader
->info
.name
= ralloc_asprintf(shader
, "GLSL%d", shader_prog
->Name
);
246 if (shader_prog
->Label
)
247 shader
->info
.label
= ralloc_strdup(shader
, shader_prog
->Label
);
249 /* Check for transform feedback varyings specified via the API */
250 shader
->info
.has_transform_feedback_varyings
=
251 shader_prog
->TransformFeedback
.NumVarying
> 0;
253 /* Check for transform feedback varyings specified in the Shader */
254 if (shader_prog
->last_vert_prog
)
255 shader
->info
.has_transform_feedback_varyings
|=
256 shader_prog
->last_vert_prog
->sh
.LinkedTransformFeedback
->NumVarying
> 0;
258 if (shader
->info
.stage
== MESA_SHADER_FRAGMENT
) {
259 shader
->info
.fs
.pixel_center_integer
= sh
->Program
->info
.fs
.pixel_center_integer
;
260 shader
->info
.fs
.origin_upper_left
= sh
->Program
->info
.fs
.origin_upper_left
;
266 nir_visitor::nir_visitor(gl_context
*ctx
, nir_shader
*shader
)
268 this->supports_std430
= ctx
->Const
.UseSTD430AsDefaultPacking
;
269 this->shader
= shader
;
270 this->is_global
= true;
271 this->var_table
= _mesa_pointer_hash_table_create(NULL
);
272 this->overload_table
= _mesa_pointer_hash_table_create(NULL
);
277 memset(&this->b
, 0, sizeof(this->b
));
280 nir_visitor::~nir_visitor()
282 _mesa_hash_table_destroy(this->var_table
, NULL
);
283 _mesa_hash_table_destroy(this->overload_table
, NULL
);
287 nir_visitor::evaluate_deref(ir_instruction
*ir
)
294 nir_visitor::constant_copy(ir_constant
*ir
, void *mem_ctx
)
299 nir_constant
*ret
= rzalloc(mem_ctx
, nir_constant
);
301 const unsigned rows
= ir
->type
->vector_elements
;
302 const unsigned cols
= ir
->type
->matrix_columns
;
305 ret
->num_elements
= 0;
306 switch (ir
->type
->base_type
) {
308 /* Only float base types can be matrices. */
311 for (unsigned r
= 0; r
< rows
; r
++)
312 ret
->values
[r
].u32
= ir
->value
.u
[r
];
317 /* Only float base types can be matrices. */
320 for (unsigned r
= 0; r
< rows
; r
++)
321 ret
->values
[r
].i32
= ir
->value
.i
[r
];
325 case GLSL_TYPE_FLOAT
:
326 case GLSL_TYPE_DOUBLE
:
328 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*, cols
);
329 ret
->num_elements
= cols
;
330 for (unsigned c
= 0; c
< cols
; c
++) {
331 nir_constant
*col_const
= rzalloc(mem_ctx
, nir_constant
);
332 col_const
->num_elements
= 0;
333 switch (ir
->type
->base_type
) {
334 case GLSL_TYPE_FLOAT
:
335 for (unsigned r
= 0; r
< rows
; r
++)
336 col_const
->values
[r
].f32
= ir
->value
.f
[c
* rows
+ r
];
339 case GLSL_TYPE_DOUBLE
:
340 for (unsigned r
= 0; r
< rows
; r
++)
341 col_const
->values
[r
].f64
= ir
->value
.d
[c
* rows
+ r
];
345 unreachable("Cannot get here from the first level switch");
347 ret
->elements
[c
] = col_const
;
350 switch (ir
->type
->base_type
) {
351 case GLSL_TYPE_FLOAT
:
352 for (unsigned r
= 0; r
< rows
; r
++)
353 ret
->values
[r
].f32
= ir
->value
.f
[r
];
356 case GLSL_TYPE_DOUBLE
:
357 for (unsigned r
= 0; r
< rows
; r
++)
358 ret
->values
[r
].f64
= ir
->value
.d
[r
];
362 unreachable("Cannot get here from the first level switch");
367 case GLSL_TYPE_UINT64
:
368 /* Only float base types can be matrices. */
371 for (unsigned r
= 0; r
< rows
; r
++)
372 ret
->values
[r
].u64
= ir
->value
.u64
[r
];
375 case GLSL_TYPE_INT64
:
376 /* Only float base types can be matrices. */
379 for (unsigned r
= 0; r
< rows
; r
++)
380 ret
->values
[r
].i64
= ir
->value
.i64
[r
];
384 /* Only float base types can be matrices. */
387 for (unsigned r
= 0; r
< rows
; r
++)
388 ret
->values
[r
].b
= ir
->value
.b
[r
];
392 case GLSL_TYPE_STRUCT
:
393 case GLSL_TYPE_ARRAY
:
394 ret
->elements
= ralloc_array(mem_ctx
, nir_constant
*,
396 ret
->num_elements
= ir
->type
->length
;
398 for (i
= 0; i
< ir
->type
->length
; i
++)
399 ret
->elements
[i
] = constant_copy(ir
->const_elements
[i
], mem_ctx
);
403 unreachable("not reached");
409 static const glsl_type
*
410 wrap_type_in_array(const glsl_type
*elem_type
, const glsl_type
*array_type
)
412 if (!array_type
->is_array())
415 elem_type
= wrap_type_in_array(elem_type
, array_type
->fields
.array
);
417 return glsl_type::get_array_instance(elem_type
, array_type
->length
);
421 nir_visitor::visit(ir_variable
*ir
)
423 /* TODO: In future we should switch to using the NIR lowering pass but for
424 * now just ignore these variables as GLSL IR should have lowered them.
425 * Anything remaining are just dead vars that weren't cleaned up.
427 if (ir
->data
.mode
== ir_var_shader_shared
)
430 /* FINISHME: inout parameters */
431 assert(ir
->data
.mode
!= ir_var_function_inout
);
433 if (ir
->data
.mode
== ir_var_function_out
)
436 nir_variable
*var
= rzalloc(shader
, nir_variable
);
437 var
->type
= ir
->type
;
438 var
->name
= ralloc_strdup(var
, ir
->name
);
440 var
->data
.always_active_io
= ir
->data
.always_active_io
;
441 var
->data
.read_only
= ir
->data
.read_only
;
442 var
->data
.centroid
= ir
->data
.centroid
;
443 var
->data
.sample
= ir
->data
.sample
;
444 var
->data
.patch
= ir
->data
.patch
;
445 var
->data
.invariant
= ir
->data
.invariant
;
446 var
->data
.location
= ir
->data
.location
;
447 var
->data
.stream
= ir
->data
.stream
;
448 if (ir
->data
.stream
& (1u << 31))
449 var
->data
.stream
|= NIR_STREAM_PACKED
;
450 var
->data
.compact
= false;
452 switch(ir
->data
.mode
) {
454 case ir_var_temporary
:
456 var
->data
.mode
= nir_var_shader_temp
;
458 var
->data
.mode
= nir_var_function_temp
;
461 case ir_var_function_in
:
462 case ir_var_const_in
:
463 var
->data
.mode
= nir_var_function_temp
;
466 case ir_var_shader_in
:
467 if (shader
->info
.stage
== MESA_SHADER_GEOMETRY
&&
468 ir
->data
.location
== VARYING_SLOT_PRIMITIVE_ID
) {
469 /* For whatever reason, GLSL IR makes gl_PrimitiveIDIn an input */
470 var
->data
.location
= SYSTEM_VALUE_PRIMITIVE_ID
;
471 var
->data
.mode
= nir_var_system_value
;
473 var
->data
.mode
= nir_var_shader_in
;
475 if (shader
->info
.stage
== MESA_SHADER_TESS_EVAL
&&
476 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
477 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
478 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
481 if (shader
->info
.stage
> MESA_SHADER_VERTEX
&&
482 ir
->data
.location
>= VARYING_SLOT_CLIP_DIST0
&&
483 ir
->data
.location
<= VARYING_SLOT_CULL_DIST1
) {
484 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
489 case ir_var_shader_out
:
490 var
->data
.mode
= nir_var_shader_out
;
491 if (shader
->info
.stage
== MESA_SHADER_TESS_CTRL
&&
492 (ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_INNER
||
493 ir
->data
.location
== VARYING_SLOT_TESS_LEVEL_OUTER
)) {
494 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
497 if (shader
->info
.stage
<= MESA_SHADER_GEOMETRY
&&
498 ir
->data
.location
>= VARYING_SLOT_CLIP_DIST0
&&
499 ir
->data
.location
<= VARYING_SLOT_CULL_DIST1
) {
500 var
->data
.compact
= ir
->type
->without_array()->is_scalar();
505 if (ir
->get_interface_type())
506 var
->data
.mode
= nir_var_mem_ubo
;
508 var
->data
.mode
= nir_var_uniform
;
511 case ir_var_shader_storage
:
512 var
->data
.mode
= nir_var_mem_ssbo
;
515 case ir_var_system_value
:
516 var
->data
.mode
= nir_var_system_value
;
520 unreachable("not reached");
523 unsigned mem_access
= 0;
524 if (ir
->data
.memory_read_only
)
525 mem_access
|= ACCESS_NON_WRITEABLE
;
526 if (ir
->data
.memory_write_only
)
527 mem_access
|= ACCESS_NON_READABLE
;
528 if (ir
->data
.memory_coherent
)
529 mem_access
|= ACCESS_COHERENT
;
530 if (ir
->data
.memory_volatile
)
531 mem_access
|= ACCESS_VOLATILE
;
532 if (ir
->data
.memory_restrict
)
533 mem_access
|= ACCESS_RESTRICT
;
535 /* For UBO and SSBO variables, we need explicit types */
536 if (var
->data
.mode
& (nir_var_mem_ubo
| nir_var_mem_ssbo
)) {
537 const glsl_type
*explicit_ifc_type
=
538 ir
->get_interface_type()->get_explicit_interface_type(supports_std430
);
540 if (ir
->type
->without_array()->is_interface()) {
541 /* If the type contains the interface, wrap the explicit type in the
542 * right number of arrays.
544 var
->type
= wrap_type_in_array(explicit_ifc_type
, ir
->type
);
546 /* Otherwise, this variable is one entry in the interface */
547 UNUSED
bool found
= false;
548 for (unsigned i
= 0; i
< explicit_ifc_type
->length
; i
++) {
549 const glsl_struct_field
*field
=
550 &explicit_ifc_type
->fields
.structure
[i
];
551 if (strcmp(ir
->name
, field
->name
) != 0)
554 var
->type
= field
->type
;
555 if (field
->memory_read_only
)
556 mem_access
|= ACCESS_NON_WRITEABLE
;
557 if (field
->memory_write_only
)
558 mem_access
|= ACCESS_NON_READABLE
;
559 if (field
->memory_coherent
)
560 mem_access
|= ACCESS_COHERENT
;
561 if (field
->memory_volatile
)
562 mem_access
|= ACCESS_VOLATILE
;
563 if (field
->memory_restrict
)
564 mem_access
|= ACCESS_RESTRICT
;
573 var
->data
.interpolation
= ir
->data
.interpolation
;
574 var
->data
.location_frac
= ir
->data
.location_frac
;
576 switch (ir
->data
.depth_layout
) {
577 case ir_depth_layout_none
:
578 var
->data
.depth_layout
= nir_depth_layout_none
;
580 case ir_depth_layout_any
:
581 var
->data
.depth_layout
= nir_depth_layout_any
;
583 case ir_depth_layout_greater
:
584 var
->data
.depth_layout
= nir_depth_layout_greater
;
586 case ir_depth_layout_less
:
587 var
->data
.depth_layout
= nir_depth_layout_less
;
589 case ir_depth_layout_unchanged
:
590 var
->data
.depth_layout
= nir_depth_layout_unchanged
;
593 unreachable("not reached");
596 var
->data
.index
= ir
->data
.index
;
597 var
->data
.descriptor_set
= 0;
598 var
->data
.binding
= ir
->data
.binding
;
599 var
->data
.explicit_binding
= ir
->data
.explicit_binding
;
600 var
->data
.bindless
= ir
->data
.bindless
;
601 var
->data
.offset
= ir
->data
.offset
;
602 var
->data
.access
= (gl_access_qualifier
)mem_access
;
604 if (var
->type
->without_array()->is_image()) {
605 var
->data
.image
.format
= ir
->data
.image_format
;
606 } else if (var
->data
.mode
== nir_var_shader_out
) {
607 var
->data
.xfb
.buffer
= ir
->data
.xfb_buffer
;
608 var
->data
.xfb
.stride
= ir
->data
.xfb_stride
;
611 var
->data
.fb_fetch_output
= ir
->data
.fb_fetch_output
;
612 var
->data
.explicit_xfb_buffer
= ir
->data
.explicit_xfb_buffer
;
613 var
->data
.explicit_xfb_stride
= ir
->data
.explicit_xfb_stride
;
615 var
->num_state_slots
= ir
->get_num_state_slots();
616 if (var
->num_state_slots
> 0) {
617 var
->state_slots
= rzalloc_array(var
, nir_state_slot
,
618 var
->num_state_slots
);
620 ir_state_slot
*state_slots
= ir
->get_state_slots();
621 for (unsigned i
= 0; i
< var
->num_state_slots
; i
++) {
622 for (unsigned j
= 0; j
< 5; j
++)
623 var
->state_slots
[i
].tokens
[j
] = state_slots
[i
].tokens
[j
];
624 var
->state_slots
[i
].swizzle
= state_slots
[i
].swizzle
;
627 var
->state_slots
= NULL
;
630 var
->constant_initializer
= constant_copy(ir
->constant_initializer
, var
);
632 var
->interface_type
= ir
->get_interface_type();
634 if (var
->data
.mode
== nir_var_function_temp
)
635 nir_function_impl_add_variable(impl
, var
);
637 nir_shader_add_variable(shader
, var
);
639 _mesa_hash_table_insert(var_table
, ir
, var
);
643 nir_function_visitor::visit_enter(ir_function
*ir
)
645 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
) {
646 visitor
->create_function(sig
);
648 return visit_continue_with_parent
;
652 nir_visitor::create_function(ir_function_signature
*ir
)
654 if (ir
->is_intrinsic())
657 nir_function
*func
= nir_function_create(shader
, ir
->function_name());
658 if (strcmp(ir
->function_name(), "main") == 0)
659 func
->is_entrypoint
= true;
661 func
->num_params
= ir
->parameters
.length() +
662 (ir
->return_type
!= glsl_type::void_type
);
663 func
->params
= ralloc_array(shader
, nir_parameter
, func
->num_params
);
667 if (ir
->return_type
!= glsl_type::void_type
) {
668 /* The return value is a variable deref (basically an out parameter) */
669 func
->params
[np
].num_components
= 1;
670 func
->params
[np
].bit_size
= 32;
674 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
675 /* FINISHME: pass arrays, structs, etc by reference? */
676 assert(param
->type
->is_vector() || param
->type
->is_scalar());
678 if (param
->data
.mode
== ir_var_function_in
) {
679 func
->params
[np
].num_components
= param
->type
->vector_elements
;
680 func
->params
[np
].bit_size
= glsl_get_bit_size(param
->type
);
682 func
->params
[np
].num_components
= 1;
683 func
->params
[np
].bit_size
= 32;
687 assert(np
== func
->num_params
);
689 _mesa_hash_table_insert(this->overload_table
, ir
, func
);
693 nir_visitor::visit(ir_function
*ir
)
695 foreach_in_list(ir_function_signature
, sig
, &ir
->signatures
)
700 nir_visitor::visit(ir_function_signature
*ir
)
702 if (ir
->is_intrinsic())
707 struct hash_entry
*entry
=
708 _mesa_hash_table_search(this->overload_table
, ir
);
711 nir_function
*func
= (nir_function
*) entry
->data
;
713 if (ir
->is_defined
) {
714 nir_function_impl
*impl
= nir_function_impl_create(func
);
717 this->is_global
= false;
719 nir_builder_init(&b
, impl
);
720 b
.cursor
= nir_after_cf_list(&impl
->body
);
722 unsigned i
= (ir
->return_type
!= glsl_type::void_type
) ? 1 : 0;
724 foreach_in_list(ir_variable
, param
, &ir
->parameters
) {
726 nir_local_variable_create(impl
, param
->type
, param
->name
);
728 if (param
->data
.mode
== ir_var_function_in
) {
729 nir_store_var(&b
, var
, nir_load_param(&b
, i
), ~0);
732 _mesa_hash_table_insert(var_table
, param
, var
);
736 visit_exec_list(&ir
->body
, this);
738 this->is_global
= true;
745 nir_visitor::visit(ir_loop
*ir
)
748 visit_exec_list(&ir
->body_instructions
, this);
749 nir_pop_loop(&b
, NULL
);
753 nir_visitor::visit(ir_if
*ir
)
755 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
756 visit_exec_list(&ir
->then_instructions
, this);
757 nir_push_else(&b
, NULL
);
758 visit_exec_list(&ir
->else_instructions
, this);
759 nir_pop_if(&b
, NULL
);
763 nir_visitor::visit(ir_discard
*ir
)
766 * discards aren't treated as control flow, because before we lower them
767 * they can appear anywhere in the shader and the stuff after them may still
768 * be executed (yay, crazy GLSL rules!). However, after lowering, all the
769 * discards will be immediately followed by a return.
772 nir_intrinsic_instr
*discard
;
774 discard
= nir_intrinsic_instr_create(this->shader
,
775 nir_intrinsic_discard_if
);
777 nir_src_for_ssa(evaluate_rvalue(ir
->condition
));
779 discard
= nir_intrinsic_instr_create(this->shader
, nir_intrinsic_discard
);
782 nir_builder_instr_insert(&b
, &discard
->instr
);
786 nir_visitor::visit(ir_demote
*ir
)
788 nir_intrinsic_instr
*demote
=
789 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_demote
);
791 nir_builder_instr_insert(&b
, &demote
->instr
);
795 nir_visitor::visit(ir_emit_vertex
*ir
)
797 nir_intrinsic_instr
*instr
=
798 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_emit_vertex
);
799 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
800 nir_builder_instr_insert(&b
, &instr
->instr
);
804 nir_visitor::visit(ir_end_primitive
*ir
)
806 nir_intrinsic_instr
*instr
=
807 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_end_primitive
);
808 nir_intrinsic_set_stream_id(instr
, ir
->stream_id());
809 nir_builder_instr_insert(&b
, &instr
->instr
);
813 nir_visitor::visit(ir_loop_jump
*ir
)
817 case ir_loop_jump::jump_break
:
818 type
= nir_jump_break
;
820 case ir_loop_jump::jump_continue
:
821 type
= nir_jump_continue
;
824 unreachable("not reached");
827 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, type
);
828 nir_builder_instr_insert(&b
, &instr
->instr
);
832 nir_visitor::visit(ir_return
*ir
)
834 if (ir
->value
!= NULL
) {
835 nir_deref_instr
*ret_deref
=
836 nir_build_deref_cast(&b
, nir_load_param(&b
, 0),
837 nir_var_function_temp
, ir
->value
->type
, 0);
839 nir_ssa_def
*val
= evaluate_rvalue(ir
->value
);
840 nir_store_deref(&b
, ret_deref
, val
, ~0);
843 nir_jump_instr
*instr
= nir_jump_instr_create(this->shader
, nir_jump_return
);
844 nir_builder_instr_insert(&b
, &instr
->instr
);
848 intrinsic_set_std430_align(nir_intrinsic_instr
*intrin
, const glsl_type
*type
)
850 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
851 unsigned pow2_components
= util_next_power_of_two(type
->vector_elements
);
852 nir_intrinsic_set_align(intrin
, (bit_size
/ 8) * pow2_components
, 0);
855 /* Accumulate any qualifiers along the deref chain to get the actual
856 * load/store qualifier.
859 static enum gl_access_qualifier
860 deref_get_qualifier(nir_deref_instr
*deref
)
863 nir_deref_path_init(&path
, deref
, NULL
);
865 unsigned qualifiers
= path
.path
[0]->var
->data
.access
;
867 const glsl_type
*parent_type
= path
.path
[0]->type
;
868 for (nir_deref_instr
**cur_ptr
= &path
.path
[1]; *cur_ptr
; cur_ptr
++) {
869 nir_deref_instr
*cur
= *cur_ptr
;
871 if (parent_type
->is_interface()) {
872 const struct glsl_struct_field
*field
=
873 &parent_type
->fields
.structure
[cur
->strct
.index
];
874 if (field
->memory_read_only
)
875 qualifiers
|= ACCESS_NON_WRITEABLE
;
876 if (field
->memory_write_only
)
877 qualifiers
|= ACCESS_NON_READABLE
;
878 if (field
->memory_coherent
)
879 qualifiers
|= ACCESS_COHERENT
;
880 if (field
->memory_volatile
)
881 qualifiers
|= ACCESS_VOLATILE
;
882 if (field
->memory_restrict
)
883 qualifiers
|= ACCESS_RESTRICT
;
886 parent_type
= cur
->type
;
889 nir_deref_path_finish(&path
);
891 return (gl_access_qualifier
) qualifiers
;
895 nir_visitor::visit(ir_call
*ir
)
897 if (ir
->callee
->is_intrinsic()) {
900 switch (ir
->callee
->intrinsic_id
) {
901 case ir_intrinsic_generic_atomic_add
:
902 op
= ir
->return_deref
->type
->is_integer_32_64()
903 ? nir_intrinsic_deref_atomic_add
: nir_intrinsic_deref_atomic_fadd
;
905 case ir_intrinsic_generic_atomic_and
:
906 op
= nir_intrinsic_deref_atomic_and
;
908 case ir_intrinsic_generic_atomic_or
:
909 op
= nir_intrinsic_deref_atomic_or
;
911 case ir_intrinsic_generic_atomic_xor
:
912 op
= nir_intrinsic_deref_atomic_xor
;
914 case ir_intrinsic_generic_atomic_min
:
915 assert(ir
->return_deref
);
916 if (ir
->return_deref
->type
== glsl_type::int_type
)
917 op
= nir_intrinsic_deref_atomic_imin
;
918 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
919 op
= nir_intrinsic_deref_atomic_umin
;
920 else if (ir
->return_deref
->type
== glsl_type::float_type
)
921 op
= nir_intrinsic_deref_atomic_fmin
;
923 unreachable("Invalid type");
925 case ir_intrinsic_generic_atomic_max
:
926 assert(ir
->return_deref
);
927 if (ir
->return_deref
->type
== glsl_type::int_type
)
928 op
= nir_intrinsic_deref_atomic_imax
;
929 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
930 op
= nir_intrinsic_deref_atomic_umax
;
931 else if (ir
->return_deref
->type
== glsl_type::float_type
)
932 op
= nir_intrinsic_deref_atomic_fmax
;
934 unreachable("Invalid type");
936 case ir_intrinsic_generic_atomic_exchange
:
937 op
= nir_intrinsic_deref_atomic_exchange
;
939 case ir_intrinsic_generic_atomic_comp_swap
:
940 op
= ir
->return_deref
->type
->is_integer_32_64()
941 ? nir_intrinsic_deref_atomic_comp_swap
942 : nir_intrinsic_deref_atomic_fcomp_swap
;
944 case ir_intrinsic_atomic_counter_read
:
945 op
= nir_intrinsic_atomic_counter_read_deref
;
947 case ir_intrinsic_atomic_counter_increment
:
948 op
= nir_intrinsic_atomic_counter_inc_deref
;
950 case ir_intrinsic_atomic_counter_predecrement
:
951 op
= nir_intrinsic_atomic_counter_pre_dec_deref
;
953 case ir_intrinsic_atomic_counter_add
:
954 op
= nir_intrinsic_atomic_counter_add_deref
;
956 case ir_intrinsic_atomic_counter_and
:
957 op
= nir_intrinsic_atomic_counter_and_deref
;
959 case ir_intrinsic_atomic_counter_or
:
960 op
= nir_intrinsic_atomic_counter_or_deref
;
962 case ir_intrinsic_atomic_counter_xor
:
963 op
= nir_intrinsic_atomic_counter_xor_deref
;
965 case ir_intrinsic_atomic_counter_min
:
966 op
= nir_intrinsic_atomic_counter_min_deref
;
968 case ir_intrinsic_atomic_counter_max
:
969 op
= nir_intrinsic_atomic_counter_max_deref
;
971 case ir_intrinsic_atomic_counter_exchange
:
972 op
= nir_intrinsic_atomic_counter_exchange_deref
;
974 case ir_intrinsic_atomic_counter_comp_swap
:
975 op
= nir_intrinsic_atomic_counter_comp_swap_deref
;
977 case ir_intrinsic_image_load
:
978 op
= nir_intrinsic_image_deref_load
;
980 case ir_intrinsic_image_store
:
981 op
= nir_intrinsic_image_deref_store
;
983 case ir_intrinsic_image_atomic_add
:
984 op
= ir
->return_deref
->type
->is_integer_32_64()
985 ? nir_intrinsic_image_deref_atomic_add
986 : nir_intrinsic_image_deref_atomic_fadd
;
988 case ir_intrinsic_image_atomic_min
:
989 if (ir
->return_deref
->type
== glsl_type::int_type
)
990 op
= nir_intrinsic_image_deref_atomic_imin
;
991 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
992 op
= nir_intrinsic_image_deref_atomic_umin
;
994 unreachable("Invalid type");
996 case ir_intrinsic_image_atomic_max
:
997 if (ir
->return_deref
->type
== glsl_type::int_type
)
998 op
= nir_intrinsic_image_deref_atomic_imax
;
999 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1000 op
= nir_intrinsic_image_deref_atomic_umax
;
1002 unreachable("Invalid type");
1004 case ir_intrinsic_image_atomic_and
:
1005 op
= nir_intrinsic_image_deref_atomic_and
;
1007 case ir_intrinsic_image_atomic_or
:
1008 op
= nir_intrinsic_image_deref_atomic_or
;
1010 case ir_intrinsic_image_atomic_xor
:
1011 op
= nir_intrinsic_image_deref_atomic_xor
;
1013 case ir_intrinsic_image_atomic_exchange
:
1014 op
= nir_intrinsic_image_deref_atomic_exchange
;
1016 case ir_intrinsic_image_atomic_comp_swap
:
1017 op
= nir_intrinsic_image_deref_atomic_comp_swap
;
1019 case ir_intrinsic_image_atomic_inc_wrap
:
1020 op
= nir_intrinsic_image_deref_atomic_inc_wrap
;
1022 case ir_intrinsic_image_atomic_dec_wrap
:
1023 op
= nir_intrinsic_image_deref_atomic_dec_wrap
;
1025 case ir_intrinsic_memory_barrier
:
1026 op
= nir_intrinsic_memory_barrier
;
1028 case ir_intrinsic_image_size
:
1029 op
= nir_intrinsic_image_deref_size
;
1031 case ir_intrinsic_image_samples
:
1032 op
= nir_intrinsic_image_deref_samples
;
1034 case ir_intrinsic_ssbo_store
:
1035 op
= nir_intrinsic_store_ssbo
;
1037 case ir_intrinsic_ssbo_load
:
1038 op
= nir_intrinsic_load_ssbo
;
1040 case ir_intrinsic_ssbo_atomic_add
:
1041 op
= ir
->return_deref
->type
->is_integer_32_64()
1042 ? nir_intrinsic_ssbo_atomic_add
: nir_intrinsic_ssbo_atomic_fadd
;
1044 case ir_intrinsic_ssbo_atomic_and
:
1045 op
= nir_intrinsic_ssbo_atomic_and
;
1047 case ir_intrinsic_ssbo_atomic_or
:
1048 op
= nir_intrinsic_ssbo_atomic_or
;
1050 case ir_intrinsic_ssbo_atomic_xor
:
1051 op
= nir_intrinsic_ssbo_atomic_xor
;
1053 case ir_intrinsic_ssbo_atomic_min
:
1054 assert(ir
->return_deref
);
1055 if (ir
->return_deref
->type
== glsl_type::int_type
)
1056 op
= nir_intrinsic_ssbo_atomic_imin
;
1057 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1058 op
= nir_intrinsic_ssbo_atomic_umin
;
1059 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1060 op
= nir_intrinsic_ssbo_atomic_fmin
;
1062 unreachable("Invalid type");
1064 case ir_intrinsic_ssbo_atomic_max
:
1065 assert(ir
->return_deref
);
1066 if (ir
->return_deref
->type
== glsl_type::int_type
)
1067 op
= nir_intrinsic_ssbo_atomic_imax
;
1068 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1069 op
= nir_intrinsic_ssbo_atomic_umax
;
1070 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1071 op
= nir_intrinsic_ssbo_atomic_fmax
;
1073 unreachable("Invalid type");
1075 case ir_intrinsic_ssbo_atomic_exchange
:
1076 op
= nir_intrinsic_ssbo_atomic_exchange
;
1078 case ir_intrinsic_ssbo_atomic_comp_swap
:
1079 op
= ir
->return_deref
->type
->is_integer_32_64()
1080 ? nir_intrinsic_ssbo_atomic_comp_swap
1081 : nir_intrinsic_ssbo_atomic_fcomp_swap
;
1083 case ir_intrinsic_shader_clock
:
1084 op
= nir_intrinsic_shader_clock
;
1086 case ir_intrinsic_begin_invocation_interlock
:
1087 op
= nir_intrinsic_begin_invocation_interlock
;
1089 case ir_intrinsic_end_invocation_interlock
:
1090 op
= nir_intrinsic_end_invocation_interlock
;
1092 case ir_intrinsic_group_memory_barrier
:
1093 op
= nir_intrinsic_group_memory_barrier
;
1095 case ir_intrinsic_memory_barrier_atomic_counter
:
1096 op
= nir_intrinsic_memory_barrier_atomic_counter
;
1098 case ir_intrinsic_memory_barrier_buffer
:
1099 op
= nir_intrinsic_memory_barrier_buffer
;
1101 case ir_intrinsic_memory_barrier_image
:
1102 op
= nir_intrinsic_memory_barrier_image
;
1104 case ir_intrinsic_memory_barrier_shared
:
1105 op
= nir_intrinsic_memory_barrier_shared
;
1107 case ir_intrinsic_shared_load
:
1108 op
= nir_intrinsic_load_shared
;
1110 case ir_intrinsic_shared_store
:
1111 op
= nir_intrinsic_store_shared
;
1113 case ir_intrinsic_shared_atomic_add
:
1114 op
= ir
->return_deref
->type
->is_integer_32_64()
1115 ? nir_intrinsic_shared_atomic_add
1116 : nir_intrinsic_shared_atomic_fadd
;
1118 case ir_intrinsic_shared_atomic_and
:
1119 op
= nir_intrinsic_shared_atomic_and
;
1121 case ir_intrinsic_shared_atomic_or
:
1122 op
= nir_intrinsic_shared_atomic_or
;
1124 case ir_intrinsic_shared_atomic_xor
:
1125 op
= nir_intrinsic_shared_atomic_xor
;
1127 case ir_intrinsic_shared_atomic_min
:
1128 assert(ir
->return_deref
);
1129 if (ir
->return_deref
->type
== glsl_type::int_type
)
1130 op
= nir_intrinsic_shared_atomic_imin
;
1131 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1132 op
= nir_intrinsic_shared_atomic_umin
;
1133 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1134 op
= nir_intrinsic_shared_atomic_fmin
;
1136 unreachable("Invalid type");
1138 case ir_intrinsic_shared_atomic_max
:
1139 assert(ir
->return_deref
);
1140 if (ir
->return_deref
->type
== glsl_type::int_type
)
1141 op
= nir_intrinsic_shared_atomic_imax
;
1142 else if (ir
->return_deref
->type
== glsl_type::uint_type
)
1143 op
= nir_intrinsic_shared_atomic_umax
;
1144 else if (ir
->return_deref
->type
== glsl_type::float_type
)
1145 op
= nir_intrinsic_shared_atomic_fmax
;
1147 unreachable("Invalid type");
1149 case ir_intrinsic_shared_atomic_exchange
:
1150 op
= nir_intrinsic_shared_atomic_exchange
;
1152 case ir_intrinsic_shared_atomic_comp_swap
:
1153 op
= ir
->return_deref
->type
->is_integer_32_64()
1154 ? nir_intrinsic_shared_atomic_comp_swap
1155 : nir_intrinsic_shared_atomic_fcomp_swap
;
1157 case ir_intrinsic_vote_any
:
1158 op
= nir_intrinsic_vote_any
;
1160 case ir_intrinsic_vote_all
:
1161 op
= nir_intrinsic_vote_all
;
1163 case ir_intrinsic_vote_eq
:
1164 op
= nir_intrinsic_vote_ieq
;
1166 case ir_intrinsic_ballot
:
1167 op
= nir_intrinsic_ballot
;
1169 case ir_intrinsic_read_invocation
:
1170 op
= nir_intrinsic_read_invocation
;
1172 case ir_intrinsic_read_first_invocation
:
1173 op
= nir_intrinsic_read_first_invocation
;
1175 case ir_intrinsic_helper_invocation
:
1176 op
= nir_intrinsic_is_helper_invocation
;
1179 unreachable("not reached");
1182 nir_intrinsic_instr
*instr
= nir_intrinsic_instr_create(shader
, op
);
1183 nir_ssa_def
*ret
= &instr
->dest
.ssa
;
1186 case nir_intrinsic_deref_atomic_add
:
1187 case nir_intrinsic_deref_atomic_imin
:
1188 case nir_intrinsic_deref_atomic_umin
:
1189 case nir_intrinsic_deref_atomic_imax
:
1190 case nir_intrinsic_deref_atomic_umax
:
1191 case nir_intrinsic_deref_atomic_and
:
1192 case nir_intrinsic_deref_atomic_or
:
1193 case nir_intrinsic_deref_atomic_xor
:
1194 case nir_intrinsic_deref_atomic_exchange
:
1195 case nir_intrinsic_deref_atomic_comp_swap
:
1196 case nir_intrinsic_deref_atomic_fadd
:
1197 case nir_intrinsic_deref_atomic_fmin
:
1198 case nir_intrinsic_deref_atomic_fmax
:
1199 case nir_intrinsic_deref_atomic_fcomp_swap
: {
1200 int param_count
= ir
->actual_parameters
.length();
1201 assert(param_count
== 2 || param_count
== 3);
1204 exec_node
*param
= ir
->actual_parameters
.get_head();
1205 ir_rvalue
*rvalue
= (ir_rvalue
*) param
;
1206 ir_dereference
*deref
= rvalue
->as_dereference();
1207 ir_swizzle
*swizzle
= NULL
;
1209 /* We may have a swizzle to pick off a single vec4 component */
1210 swizzle
= rvalue
->as_swizzle();
1211 assert(swizzle
&& swizzle
->type
->vector_elements
== 1);
1212 deref
= swizzle
->val
->as_dereference();
1215 nir_deref_instr
*nir_deref
= evaluate_deref(deref
);
1217 nir_deref
= nir_build_deref_array_imm(&b
, nir_deref
,
1220 instr
->src
[0] = nir_src_for_ssa(&nir_deref
->dest
.ssa
);
1222 nir_intrinsic_set_access(instr
, deref_get_qualifier(nir_deref
));
1224 /* data1 parameter (this is always present) */
1225 param
= param
->get_next();
1226 ir_instruction
*inst
= (ir_instruction
*) param
;
1227 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1229 /* data2 parameter (only with atomic_comp_swap) */
1230 if (param_count
== 3) {
1231 assert(op
== nir_intrinsic_deref_atomic_comp_swap
||
1232 op
== nir_intrinsic_deref_atomic_fcomp_swap
);
1233 param
= param
->get_next();
1234 inst
= (ir_instruction
*) param
;
1235 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1239 assert(ir
->return_deref
);
1240 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1241 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1242 nir_builder_instr_insert(&b
, &instr
->instr
);
1245 case nir_intrinsic_atomic_counter_read_deref
:
1246 case nir_intrinsic_atomic_counter_inc_deref
:
1247 case nir_intrinsic_atomic_counter_pre_dec_deref
:
1248 case nir_intrinsic_atomic_counter_add_deref
:
1249 case nir_intrinsic_atomic_counter_min_deref
:
1250 case nir_intrinsic_atomic_counter_max_deref
:
1251 case nir_intrinsic_atomic_counter_and_deref
:
1252 case nir_intrinsic_atomic_counter_or_deref
:
1253 case nir_intrinsic_atomic_counter_xor_deref
:
1254 case nir_intrinsic_atomic_counter_exchange_deref
:
1255 case nir_intrinsic_atomic_counter_comp_swap_deref
: {
1256 /* Set the counter variable dereference. */
1257 exec_node
*param
= ir
->actual_parameters
.get_head();
1258 ir_dereference
*counter
= (ir_dereference
*)param
;
1260 instr
->src
[0] = nir_src_for_ssa(&evaluate_deref(counter
)->dest
.ssa
);
1261 param
= param
->get_next();
1263 /* Set the intrinsic destination. */
1264 if (ir
->return_deref
) {
1265 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 32, NULL
);
1268 /* Set the intrinsic parameters. */
1269 if (!param
->is_tail_sentinel()) {
1271 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1272 param
= param
->get_next();
1275 if (!param
->is_tail_sentinel()) {
1277 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1278 param
= param
->get_next();
1281 nir_builder_instr_insert(&b
, &instr
->instr
);
1284 case nir_intrinsic_image_deref_load
:
1285 case nir_intrinsic_image_deref_store
:
1286 case nir_intrinsic_image_deref_atomic_add
:
1287 case nir_intrinsic_image_deref_atomic_imin
:
1288 case nir_intrinsic_image_deref_atomic_umin
:
1289 case nir_intrinsic_image_deref_atomic_imax
:
1290 case nir_intrinsic_image_deref_atomic_umax
:
1291 case nir_intrinsic_image_deref_atomic_and
:
1292 case nir_intrinsic_image_deref_atomic_or
:
1293 case nir_intrinsic_image_deref_atomic_xor
:
1294 case nir_intrinsic_image_deref_atomic_exchange
:
1295 case nir_intrinsic_image_deref_atomic_comp_swap
:
1296 case nir_intrinsic_image_deref_atomic_fadd
:
1297 case nir_intrinsic_image_deref_samples
:
1298 case nir_intrinsic_image_deref_size
:
1299 case nir_intrinsic_image_deref_atomic_inc_wrap
:
1300 case nir_intrinsic_image_deref_atomic_dec_wrap
: {
1301 nir_ssa_undef_instr
*instr_undef
=
1302 nir_ssa_undef_instr_create(shader
, 1, 32);
1303 nir_builder_instr_insert(&b
, &instr_undef
->instr
);
1305 /* Set the image variable dereference. */
1306 exec_node
*param
= ir
->actual_parameters
.get_head();
1307 ir_dereference
*image
= (ir_dereference
*)param
;
1308 nir_deref_instr
*deref
= evaluate_deref(image
);
1309 const glsl_type
*type
= deref
->type
;
1311 nir_intrinsic_set_access(instr
, deref_get_qualifier(deref
));
1313 instr
->src
[0] = nir_src_for_ssa(&deref
->dest
.ssa
);
1314 param
= param
->get_next();
1316 /* Set the intrinsic destination. */
1317 if (ir
->return_deref
) {
1318 unsigned num_components
= ir
->return_deref
->type
->vector_elements
;
1319 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1320 num_components
, 32, NULL
);
1323 if (op
== nir_intrinsic_image_deref_size
) {
1324 instr
->num_components
= instr
->dest
.ssa
.num_components
;
1325 } else if (op
== nir_intrinsic_image_deref_load
||
1326 op
== nir_intrinsic_image_deref_store
) {
1327 instr
->num_components
= 4;
1330 if (op
== nir_intrinsic_image_deref_size
||
1331 op
== nir_intrinsic_image_deref_samples
) {
1332 nir_builder_instr_insert(&b
, &instr
->instr
);
1336 /* Set the address argument, extending the coordinate vector to four
1339 nir_ssa_def
*src_addr
=
1340 evaluate_rvalue((ir_dereference
*)param
);
1341 nir_ssa_def
*srcs
[4];
1343 for (int i
= 0; i
< 4; i
++) {
1344 if (i
< type
->coordinate_components())
1345 srcs
[i
] = nir_channel(&b
, src_addr
, i
);
1347 srcs
[i
] = &instr_undef
->def
;
1350 instr
->src
[1] = nir_src_for_ssa(nir_vec(&b
, srcs
, 4));
1351 param
= param
->get_next();
1353 /* Set the sample argument, which is undefined for single-sample
1356 if (type
->sampler_dimensionality
== GLSL_SAMPLER_DIM_MS
) {
1358 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1359 param
= param
->get_next();
1361 instr
->src
[2] = nir_src_for_ssa(&instr_undef
->def
);
1364 /* Set the intrinsic parameters. */
1365 if (!param
->is_tail_sentinel()) {
1367 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1368 param
= param
->get_next();
1371 if (!param
->is_tail_sentinel()) {
1373 nir_src_for_ssa(evaluate_rvalue((ir_dereference
*)param
));
1374 param
= param
->get_next();
1376 nir_builder_instr_insert(&b
, &instr
->instr
);
1379 case nir_intrinsic_memory_barrier
:
1380 case nir_intrinsic_group_memory_barrier
:
1381 case nir_intrinsic_memory_barrier_atomic_counter
:
1382 case nir_intrinsic_memory_barrier_buffer
:
1383 case nir_intrinsic_memory_barrier_image
:
1384 case nir_intrinsic_memory_barrier_shared
:
1385 nir_builder_instr_insert(&b
, &instr
->instr
);
1387 case nir_intrinsic_shader_clock
:
1388 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 2, 32, NULL
);
1389 instr
->num_components
= 2;
1390 nir_builder_instr_insert(&b
, &instr
->instr
);
1392 case nir_intrinsic_begin_invocation_interlock
:
1393 nir_builder_instr_insert(&b
, &instr
->instr
);
1395 case nir_intrinsic_end_invocation_interlock
:
1396 nir_builder_instr_insert(&b
, &instr
->instr
);
1398 case nir_intrinsic_store_ssbo
: {
1399 exec_node
*param
= ir
->actual_parameters
.get_head();
1400 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1402 param
= param
->get_next();
1403 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1405 param
= param
->get_next();
1406 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1408 param
= param
->get_next();
1409 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1412 nir_ssa_def
*nir_val
= evaluate_rvalue(val
);
1413 if (val
->type
->is_boolean())
1414 nir_val
= nir_b2i32(&b
, nir_val
);
1416 instr
->src
[0] = nir_src_for_ssa(nir_val
);
1417 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(block
));
1418 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(offset
));
1419 intrinsic_set_std430_align(instr
, val
->type
);
1420 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1421 instr
->num_components
= val
->type
->vector_elements
;
1423 nir_builder_instr_insert(&b
, &instr
->instr
);
1426 case nir_intrinsic_load_ssbo
: {
1427 exec_node
*param
= ir
->actual_parameters
.get_head();
1428 ir_rvalue
*block
= ((ir_instruction
*)param
)->as_rvalue();
1430 param
= param
->get_next();
1431 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1433 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(block
));
1434 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1436 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1437 instr
->num_components
= type
->vector_elements
;
1438 intrinsic_set_std430_align(instr
, type
);
1440 /* Setup destination register */
1441 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
1442 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1443 type
->vector_elements
, bit_size
, NULL
);
1445 /* Insert the created nir instruction now since in the case of boolean
1446 * result we will need to emit another instruction after it
1448 nir_builder_instr_insert(&b
, &instr
->instr
);
1451 * In SSBO/UBO's, a true boolean value is any non-zero value, but we
1452 * consider a true boolean to be ~0. Fix this up with a != 0
1455 if (type
->is_boolean())
1456 ret
= nir_i2b(&b
, &instr
->dest
.ssa
);
1459 case nir_intrinsic_ssbo_atomic_add
:
1460 case nir_intrinsic_ssbo_atomic_imin
:
1461 case nir_intrinsic_ssbo_atomic_umin
:
1462 case nir_intrinsic_ssbo_atomic_imax
:
1463 case nir_intrinsic_ssbo_atomic_umax
:
1464 case nir_intrinsic_ssbo_atomic_and
:
1465 case nir_intrinsic_ssbo_atomic_or
:
1466 case nir_intrinsic_ssbo_atomic_xor
:
1467 case nir_intrinsic_ssbo_atomic_exchange
:
1468 case nir_intrinsic_ssbo_atomic_comp_swap
:
1469 case nir_intrinsic_ssbo_atomic_fadd
:
1470 case nir_intrinsic_ssbo_atomic_fmin
:
1471 case nir_intrinsic_ssbo_atomic_fmax
:
1472 case nir_intrinsic_ssbo_atomic_fcomp_swap
: {
1473 int param_count
= ir
->actual_parameters
.length();
1474 assert(param_count
== 3 || param_count
== 4);
1477 exec_node
*param
= ir
->actual_parameters
.get_head();
1478 ir_instruction
*inst
= (ir_instruction
*) param
;
1479 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1482 param
= param
->get_next();
1483 inst
= (ir_instruction
*) param
;
1484 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1486 /* data1 parameter (this is always present) */
1487 param
= param
->get_next();
1488 inst
= (ir_instruction
*) param
;
1489 instr
->src
[2] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1491 /* data2 parameter (only with atomic_comp_swap) */
1492 if (param_count
== 4) {
1493 assert(op
== nir_intrinsic_ssbo_atomic_comp_swap
||
1494 op
== nir_intrinsic_ssbo_atomic_fcomp_swap
);
1495 param
= param
->get_next();
1496 inst
= (ir_instruction
*) param
;
1497 instr
->src
[3] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1501 assert(ir
->return_deref
);
1502 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1503 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1504 nir_builder_instr_insert(&b
, &instr
->instr
);
1507 case nir_intrinsic_load_shared
: {
1508 exec_node
*param
= ir
->actual_parameters
.get_head();
1509 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1511 nir_intrinsic_set_base(instr
, 0);
1512 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(offset
));
1514 const glsl_type
*type
= ir
->return_deref
->var
->type
;
1515 instr
->num_components
= type
->vector_elements
;
1516 intrinsic_set_std430_align(instr
, type
);
1518 /* Setup destination register */
1519 unsigned bit_size
= type
->is_boolean() ? 32 : glsl_get_bit_size(type
);
1520 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1521 type
->vector_elements
, bit_size
, NULL
);
1523 nir_builder_instr_insert(&b
, &instr
->instr
);
1525 /* The value in shared memory is a 32-bit value */
1526 if (type
->is_boolean())
1527 ret
= nir_i2b(&b
, &instr
->dest
.ssa
);
1530 case nir_intrinsic_store_shared
: {
1531 exec_node
*param
= ir
->actual_parameters
.get_head();
1532 ir_rvalue
*offset
= ((ir_instruction
*)param
)->as_rvalue();
1534 param
= param
->get_next();
1535 ir_rvalue
*val
= ((ir_instruction
*)param
)->as_rvalue();
1537 param
= param
->get_next();
1538 ir_constant
*write_mask
= ((ir_instruction
*)param
)->as_constant();
1541 nir_intrinsic_set_base(instr
, 0);
1542 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(offset
));
1544 nir_intrinsic_set_write_mask(instr
, write_mask
->value
.u
[0]);
1546 nir_ssa_def
*nir_val
= evaluate_rvalue(val
);
1547 /* The value in shared memory is a 32-bit value */
1548 if (val
->type
->is_boolean())
1549 nir_val
= nir_b2i32(&b
, nir_val
);
1551 instr
->src
[0] = nir_src_for_ssa(nir_val
);
1552 instr
->num_components
= val
->type
->vector_elements
;
1553 intrinsic_set_std430_align(instr
, val
->type
);
1555 nir_builder_instr_insert(&b
, &instr
->instr
);
1558 case nir_intrinsic_shared_atomic_add
:
1559 case nir_intrinsic_shared_atomic_imin
:
1560 case nir_intrinsic_shared_atomic_umin
:
1561 case nir_intrinsic_shared_atomic_imax
:
1562 case nir_intrinsic_shared_atomic_umax
:
1563 case nir_intrinsic_shared_atomic_and
:
1564 case nir_intrinsic_shared_atomic_or
:
1565 case nir_intrinsic_shared_atomic_xor
:
1566 case nir_intrinsic_shared_atomic_exchange
:
1567 case nir_intrinsic_shared_atomic_comp_swap
:
1568 case nir_intrinsic_shared_atomic_fadd
:
1569 case nir_intrinsic_shared_atomic_fmin
:
1570 case nir_intrinsic_shared_atomic_fmax
:
1571 case nir_intrinsic_shared_atomic_fcomp_swap
: {
1572 int param_count
= ir
->actual_parameters
.length();
1573 assert(param_count
== 2 || param_count
== 3);
1576 exec_node
*param
= ir
->actual_parameters
.get_head();
1577 ir_instruction
*inst
= (ir_instruction
*) param
;
1578 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1580 /* data1 parameter (this is always present) */
1581 param
= param
->get_next();
1582 inst
= (ir_instruction
*) param
;
1583 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1585 /* data2 parameter (only with atomic_comp_swap) */
1586 if (param_count
== 3) {
1587 assert(op
== nir_intrinsic_shared_atomic_comp_swap
||
1588 op
== nir_intrinsic_shared_atomic_fcomp_swap
);
1589 param
= param
->get_next();
1590 inst
= (ir_instruction
*) param
;
1592 nir_src_for_ssa(evaluate_rvalue(inst
->as_rvalue()));
1596 assert(ir
->return_deref
);
1597 unsigned bit_size
= glsl_get_bit_size(ir
->return_deref
->type
);
1598 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1599 ir
->return_deref
->type
->vector_elements
,
1601 nir_builder_instr_insert(&b
, &instr
->instr
);
1604 case nir_intrinsic_vote_any
:
1605 case nir_intrinsic_vote_all
:
1606 case nir_intrinsic_vote_ieq
: {
1607 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 1, NULL
);
1608 instr
->num_components
= 1;
1610 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1611 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1613 nir_builder_instr_insert(&b
, &instr
->instr
);
1617 case nir_intrinsic_ballot
: {
1618 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1619 ir
->return_deref
->type
->vector_elements
, 64, NULL
);
1620 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1622 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1623 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1625 nir_builder_instr_insert(&b
, &instr
->instr
);
1628 case nir_intrinsic_read_invocation
: {
1629 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1630 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1631 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1633 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1634 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1636 ir_rvalue
*invocation
= (ir_rvalue
*) ir
->actual_parameters
.get_head()->next
;
1637 instr
->src
[1] = nir_src_for_ssa(evaluate_rvalue(invocation
));
1639 nir_builder_instr_insert(&b
, &instr
->instr
);
1642 case nir_intrinsic_read_first_invocation
: {
1643 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
,
1644 ir
->return_deref
->type
->vector_elements
, 32, NULL
);
1645 instr
->num_components
= ir
->return_deref
->type
->vector_elements
;
1647 ir_rvalue
*value
= (ir_rvalue
*) ir
->actual_parameters
.get_head();
1648 instr
->src
[0] = nir_src_for_ssa(evaluate_rvalue(value
));
1650 nir_builder_instr_insert(&b
, &instr
->instr
);
1653 case nir_intrinsic_is_helper_invocation
: {
1654 nir_ssa_dest_init(&instr
->instr
, &instr
->dest
, 1, 1, NULL
);
1655 instr
->num_components
= 1;
1656 nir_builder_instr_insert(&b
, &instr
->instr
);
1660 unreachable("not reached");
1663 if (ir
->return_deref
)
1664 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), ret
, ~0);
1669 struct hash_entry
*entry
=
1670 _mesa_hash_table_search(this->overload_table
, ir
->callee
);
1672 nir_function
*callee
= (nir_function
*) entry
->data
;
1674 nir_call_instr
*call
= nir_call_instr_create(this->shader
, callee
);
1677 nir_deref_instr
*ret_deref
= NULL
;
1678 if (ir
->return_deref
) {
1679 nir_variable
*ret_tmp
=
1680 nir_local_variable_create(this->impl
, ir
->return_deref
->type
,
1682 ret_deref
= nir_build_deref_var(&b
, ret_tmp
);
1683 call
->params
[i
++] = nir_src_for_ssa(&ret_deref
->dest
.ssa
);
1686 foreach_two_lists(formal_node
, &ir
->callee
->parameters
,
1687 actual_node
, &ir
->actual_parameters
) {
1688 ir_rvalue
*param_rvalue
= (ir_rvalue
*) actual_node
;
1689 ir_variable
*sig_param
= (ir_variable
*) formal_node
;
1691 if (sig_param
->data
.mode
== ir_var_function_out
) {
1692 nir_deref_instr
*out_deref
= evaluate_deref(param_rvalue
);
1693 call
->params
[i
] = nir_src_for_ssa(&out_deref
->dest
.ssa
);
1694 } else if (sig_param
->data
.mode
== ir_var_function_in
) {
1695 nir_ssa_def
*val
= evaluate_rvalue(param_rvalue
);
1696 nir_src src
= nir_src_for_ssa(val
);
1698 nir_src_copy(&call
->params
[i
], &src
, call
);
1699 } else if (sig_param
->data
.mode
== ir_var_function_inout
) {
1700 unreachable("unimplemented: inout parameters");
1706 nir_builder_instr_insert(&b
, &call
->instr
);
1708 if (ir
->return_deref
)
1709 nir_store_deref(&b
, evaluate_deref(ir
->return_deref
), nir_load_deref(&b
, ret_deref
), ~0);
1713 nir_visitor::visit(ir_assignment
*ir
)
1715 unsigned num_components
= ir
->lhs
->type
->vector_elements
;
1717 b
.exact
= ir
->lhs
->variable_referenced()->data
.invariant
||
1718 ir
->lhs
->variable_referenced()->data
.precise
;
1720 if ((ir
->rhs
->as_dereference() || ir
->rhs
->as_constant()) &&
1721 (ir
->write_mask
== (1 << num_components
) - 1 || ir
->write_mask
== 0)) {
1722 nir_deref_instr
*lhs
= evaluate_deref(ir
->lhs
);
1723 nir_deref_instr
*rhs
= evaluate_deref(ir
->rhs
);
1724 enum gl_access_qualifier lhs_qualifiers
= deref_get_qualifier(lhs
);
1725 enum gl_access_qualifier rhs_qualifiers
= deref_get_qualifier(rhs
);
1726 if (ir
->condition
) {
1727 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1728 nir_copy_deref_with_access(&b
, lhs
, rhs
, lhs_qualifiers
,
1730 nir_pop_if(&b
, NULL
);
1732 nir_copy_deref_with_access(&b
, lhs
, rhs
, lhs_qualifiers
,
1738 assert(ir
->rhs
->type
->is_scalar() || ir
->rhs
->type
->is_vector());
1740 ir
->lhs
->accept(this);
1741 nir_deref_instr
*lhs_deref
= this->deref
;
1742 nir_ssa_def
*src
= evaluate_rvalue(ir
->rhs
);
1744 if (ir
->write_mask
!= (1 << num_components
) - 1 && ir
->write_mask
!= 0) {
1745 /* GLSL IR will give us the input to the write-masked assignment in a
1746 * single packed vector. So, for example, if the writemask is xzw, then
1747 * we have to swizzle x -> x, y -> z, and z -> w and get the y component
1751 unsigned component
= 0;
1752 for (unsigned i
= 0; i
< 4; i
++) {
1753 swiz
[i
] = ir
->write_mask
& (1 << i
) ? component
++ : 0;
1755 src
= nir_swizzle(&b
, src
, swiz
, num_components
);
1758 enum gl_access_qualifier qualifiers
= deref_get_qualifier(lhs_deref
);
1759 if (ir
->condition
) {
1760 nir_push_if(&b
, evaluate_rvalue(ir
->condition
));
1761 nir_store_deref_with_access(&b
, lhs_deref
, src
, ir
->write_mask
,
1763 nir_pop_if(&b
, NULL
);
1765 nir_store_deref_with_access(&b
, lhs_deref
, src
, ir
->write_mask
,
1771 * Given an instruction, returns a pointer to its destination or NULL if there
1772 * is no destination.
1774 * Note that this only handles instructions we generate at this level.
1777 get_instr_dest(nir_instr
*instr
)
1779 nir_alu_instr
*alu_instr
;
1780 nir_intrinsic_instr
*intrinsic_instr
;
1781 nir_tex_instr
*tex_instr
;
1783 switch (instr
->type
) {
1784 case nir_instr_type_alu
:
1785 alu_instr
= nir_instr_as_alu(instr
);
1786 return &alu_instr
->dest
.dest
;
1788 case nir_instr_type_intrinsic
:
1789 intrinsic_instr
= nir_instr_as_intrinsic(instr
);
1790 if (nir_intrinsic_infos
[intrinsic_instr
->intrinsic
].has_dest
)
1791 return &intrinsic_instr
->dest
;
1795 case nir_instr_type_tex
:
1796 tex_instr
= nir_instr_as_tex(instr
);
1797 return &tex_instr
->dest
;
1800 unreachable("not reached");
1807 nir_visitor::add_instr(nir_instr
*instr
, unsigned num_components
,
1810 nir_dest
*dest
= get_instr_dest(instr
);
1813 nir_ssa_dest_init(instr
, dest
, num_components
, bit_size
, NULL
);
1815 nir_builder_instr_insert(&b
, instr
);
1818 assert(dest
->is_ssa
);
1819 this->result
= &dest
->ssa
;
1824 nir_visitor::evaluate_rvalue(ir_rvalue
* ir
)
1827 if (ir
->as_dereference() || ir
->as_constant()) {
1829 * A dereference is being used on the right hand side, which means we
1830 * must emit a variable load.
1833 enum gl_access_qualifier access
= deref_get_qualifier(this->deref
);
1834 this->result
= nir_load_deref_with_access(&b
, this->deref
, access
);
1837 return this->result
;
1841 type_is_float(glsl_base_type type
)
1843 return type
== GLSL_TYPE_FLOAT
|| type
== GLSL_TYPE_DOUBLE
||
1844 type
== GLSL_TYPE_FLOAT16
;
1848 type_is_signed(glsl_base_type type
)
1850 return type
== GLSL_TYPE_INT
|| type
== GLSL_TYPE_INT64
||
1851 type
== GLSL_TYPE_INT16
;
1855 nir_visitor::visit(ir_expression
*ir
)
1857 /* Some special cases */
1858 switch (ir
->operation
) {
1859 case ir_binop_ubo_load
: {
1860 nir_intrinsic_instr
*load
=
1861 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_load_ubo
);
1862 unsigned bit_size
= ir
->type
->is_boolean() ? 32 :
1863 glsl_get_bit_size(ir
->type
);
1864 load
->num_components
= ir
->type
->vector_elements
;
1865 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
1866 load
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1867 intrinsic_set_std430_align(load
, ir
->type
);
1868 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
1871 * In UBO's, a true boolean value is any non-zero value, but we consider
1872 * a true boolean to be ~0. Fix this up with a != 0 comparison.
1875 if (ir
->type
->is_boolean())
1876 this->result
= nir_i2b(&b
, &load
->dest
.ssa
);
1881 case ir_unop_interpolate_at_centroid
:
1882 case ir_binop_interpolate_at_offset
:
1883 case ir_binop_interpolate_at_sample
: {
1884 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1885 ir_swizzle
*swizzle
= NULL
;
1887 /* the api does not allow a swizzle here, but the varying packing code
1888 * may have pushed one into here.
1890 swizzle
= ir
->operands
[0]->as_swizzle();
1892 deref
= swizzle
->val
->as_dereference();
1896 deref
->accept(this);
1898 nir_intrinsic_op op
;
1899 if (this->deref
->mode
== nir_var_shader_in
) {
1900 switch (ir
->operation
) {
1901 case ir_unop_interpolate_at_centroid
:
1902 op
= nir_intrinsic_interp_deref_at_centroid
;
1904 case ir_binop_interpolate_at_offset
:
1905 op
= nir_intrinsic_interp_deref_at_offset
;
1907 case ir_binop_interpolate_at_sample
:
1908 op
= nir_intrinsic_interp_deref_at_sample
;
1911 unreachable("Invalid interpolation intrinsic");
1914 /* This case can happen if the vertex shader does not write the
1915 * given varying. In this case, the linker will lower it to a
1916 * global variable. Since interpolating a variable makes no
1917 * sense, we'll just turn it into a load which will probably
1918 * eventually end up as an SSA definition.
1920 assert(this->deref
->mode
== nir_var_shader_temp
);
1921 op
= nir_intrinsic_load_deref
;
1924 nir_intrinsic_instr
*intrin
= nir_intrinsic_instr_create(shader
, op
);
1925 intrin
->num_components
= deref
->type
->vector_elements
;
1926 intrin
->src
[0] = nir_src_for_ssa(&this->deref
->dest
.ssa
);
1928 if (intrin
->intrinsic
== nir_intrinsic_interp_deref_at_offset
||
1929 intrin
->intrinsic
== nir_intrinsic_interp_deref_at_sample
)
1930 intrin
->src
[1] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[1]));
1932 unsigned bit_size
= glsl_get_bit_size(deref
->type
);
1933 add_instr(&intrin
->instr
, deref
->type
->vector_elements
, bit_size
);
1936 unsigned swiz
[4] = {
1937 swizzle
->mask
.x
, swizzle
->mask
.y
, swizzle
->mask
.z
, swizzle
->mask
.w
1940 result
= nir_swizzle(&b
, result
, swiz
,
1941 swizzle
->type
->vector_elements
);
1947 case ir_unop_ssbo_unsized_array_length
: {
1948 nir_intrinsic_instr
*intrin
=
1949 nir_intrinsic_instr_create(b
.shader
,
1950 nir_intrinsic_deref_buffer_array_length
);
1952 ir_dereference
*deref
= ir
->operands
[0]->as_dereference();
1953 intrin
->src
[0] = nir_src_for_ssa(&evaluate_deref(deref
)->dest
.ssa
);
1955 add_instr(&intrin
->instr
, 1, 32);
1963 nir_ssa_def
*srcs
[4];
1964 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1965 srcs
[i
] = evaluate_rvalue(ir
->operands
[i
]);
1967 glsl_base_type types
[4];
1968 for (unsigned i
= 0; i
< ir
->num_operands
; i
++)
1969 types
[i
] = ir
->operands
[i
]->type
->base_type
;
1971 glsl_base_type out_type
= ir
->type
->base_type
;
1973 switch (ir
->operation
) {
1974 case ir_unop_bit_not
: result
= nir_inot(&b
, srcs
[0]); break;
1975 case ir_unop_logic_not
:
1976 result
= nir_inot(&b
, srcs
[0]);
1979 result
= type_is_float(types
[0]) ? nir_fneg(&b
, srcs
[0])
1980 : nir_ineg(&b
, srcs
[0]);
1983 result
= type_is_float(types
[0]) ? nir_fabs(&b
, srcs
[0])
1984 : nir_iabs(&b
, srcs
[0]);
1986 case ir_unop_saturate
:
1987 assert(type_is_float(types
[0]));
1988 result
= nir_fsat(&b
, srcs
[0]);
1991 result
= type_is_float(types
[0]) ? nir_fsign(&b
, srcs
[0])
1992 : nir_isign(&b
, srcs
[0]);
1994 case ir_unop_rcp
: result
= nir_frcp(&b
, srcs
[0]); break;
1995 case ir_unop_rsq
: result
= nir_frsq(&b
, srcs
[0]); break;
1996 case ir_unop_sqrt
: result
= nir_fsqrt(&b
, srcs
[0]); break;
1997 case ir_unop_exp
: unreachable("ir_unop_exp should have been lowered");
1998 case ir_unop_log
: unreachable("ir_unop_log should have been lowered");
1999 case ir_unop_exp2
: result
= nir_fexp2(&b
, srcs
[0]); break;
2000 case ir_unop_log2
: result
= nir_flog2(&b
, srcs
[0]); break;
2036 case ir_unop_i642u64
:
2037 case ir_unop_u642i64
: {
2038 nir_alu_type src_type
= nir_get_nir_type_for_glsl_base_type(types
[0]);
2039 nir_alu_type dst_type
= nir_get_nir_type_for_glsl_base_type(out_type
);
2040 result
= nir_build_alu(&b
, nir_type_conversion_op(src_type
, dst_type
,
2041 nir_rounding_mode_undef
),
2042 srcs
[0], NULL
, NULL
, NULL
);
2043 /* b2i and b2f don't have fixed bit-size versions so the builder will
2044 * just assume 32 and we have to fix it up here.
2046 result
->bit_size
= nir_alu_type_get_type_size(dst_type
);
2050 case ir_unop_bitcast_i2f
:
2051 case ir_unop_bitcast_f2i
:
2052 case ir_unop_bitcast_u2f
:
2053 case ir_unop_bitcast_f2u
:
2054 case ir_unop_bitcast_i642d
:
2055 case ir_unop_bitcast_d2i64
:
2056 case ir_unop_bitcast_u642d
:
2057 case ir_unop_bitcast_d2u64
:
2058 case ir_unop_subroutine_to_int
:
2060 result
= nir_mov(&b
, srcs
[0]);
2062 case ir_unop_trunc
: result
= nir_ftrunc(&b
, srcs
[0]); break;
2063 case ir_unop_ceil
: result
= nir_fceil(&b
, srcs
[0]); break;
2064 case ir_unop_floor
: result
= nir_ffloor(&b
, srcs
[0]); break;
2065 case ir_unop_fract
: result
= nir_ffract(&b
, srcs
[0]); break;
2066 case ir_unop_frexp_exp
: result
= nir_frexp_exp(&b
, srcs
[0]); break;
2067 case ir_unop_frexp_sig
: result
= nir_frexp_sig(&b
, srcs
[0]); break;
2068 case ir_unop_round_even
: result
= nir_fround_even(&b
, srcs
[0]); break;
2069 case ir_unop_sin
: result
= nir_fsin(&b
, srcs
[0]); break;
2070 case ir_unop_cos
: result
= nir_fcos(&b
, srcs
[0]); break;
2071 case ir_unop_dFdx
: result
= nir_fddx(&b
, srcs
[0]); break;
2072 case ir_unop_dFdy
: result
= nir_fddy(&b
, srcs
[0]); break;
2073 case ir_unop_dFdx_fine
: result
= nir_fddx_fine(&b
, srcs
[0]); break;
2074 case ir_unop_dFdy_fine
: result
= nir_fddy_fine(&b
, srcs
[0]); break;
2075 case ir_unop_dFdx_coarse
: result
= nir_fddx_coarse(&b
, srcs
[0]); break;
2076 case ir_unop_dFdy_coarse
: result
= nir_fddy_coarse(&b
, srcs
[0]); break;
2077 case ir_unop_pack_snorm_2x16
:
2078 result
= nir_pack_snorm_2x16(&b
, srcs
[0]);
2080 case ir_unop_pack_snorm_4x8
:
2081 result
= nir_pack_snorm_4x8(&b
, srcs
[0]);
2083 case ir_unop_pack_unorm_2x16
:
2084 result
= nir_pack_unorm_2x16(&b
, srcs
[0]);
2086 case ir_unop_pack_unorm_4x8
:
2087 result
= nir_pack_unorm_4x8(&b
, srcs
[0]);
2089 case ir_unop_pack_half_2x16
:
2090 result
= nir_pack_half_2x16(&b
, srcs
[0]);
2092 case ir_unop_unpack_snorm_2x16
:
2093 result
= nir_unpack_snorm_2x16(&b
, srcs
[0]);
2095 case ir_unop_unpack_snorm_4x8
:
2096 result
= nir_unpack_snorm_4x8(&b
, srcs
[0]);
2098 case ir_unop_unpack_unorm_2x16
:
2099 result
= nir_unpack_unorm_2x16(&b
, srcs
[0]);
2101 case ir_unop_unpack_unorm_4x8
:
2102 result
= nir_unpack_unorm_4x8(&b
, srcs
[0]);
2104 case ir_unop_unpack_half_2x16
:
2105 result
= nir_unpack_half_2x16(&b
, srcs
[0]);
2107 case ir_unop_pack_sampler_2x32
:
2108 case ir_unop_pack_image_2x32
:
2109 case ir_unop_pack_double_2x32
:
2110 case ir_unop_pack_int_2x32
:
2111 case ir_unop_pack_uint_2x32
:
2112 result
= nir_pack_64_2x32(&b
, srcs
[0]);
2114 case ir_unop_unpack_sampler_2x32
:
2115 case ir_unop_unpack_image_2x32
:
2116 case ir_unop_unpack_double_2x32
:
2117 case ir_unop_unpack_int_2x32
:
2118 case ir_unop_unpack_uint_2x32
:
2119 result
= nir_unpack_64_2x32(&b
, srcs
[0]);
2121 case ir_unop_bitfield_reverse
:
2122 result
= nir_bitfield_reverse(&b
, srcs
[0]);
2124 case ir_unop_bit_count
:
2125 result
= nir_bit_count(&b
, srcs
[0]);
2127 case ir_unop_find_msb
:
2129 case GLSL_TYPE_UINT
:
2130 result
= nir_ufind_msb(&b
, srcs
[0]);
2133 result
= nir_ifind_msb(&b
, srcs
[0]);
2136 unreachable("Invalid type for findMSB()");
2139 case ir_unop_find_lsb
:
2140 result
= nir_find_lsb(&b
, srcs
[0]);
2144 switch (ir
->type
->vector_elements
) {
2146 switch (ir
->operands
[0]->type
->vector_elements
) {
2147 case 1: result
= nir_fnoise1_1(&b
, srcs
[0]); break;
2148 case 2: result
= nir_fnoise1_2(&b
, srcs
[0]); break;
2149 case 3: result
= nir_fnoise1_3(&b
, srcs
[0]); break;
2150 case 4: result
= nir_fnoise1_4(&b
, srcs
[0]); break;
2151 default: unreachable("not reached");
2155 switch (ir
->operands
[0]->type
->vector_elements
) {
2156 case 1: result
= nir_fnoise2_1(&b
, srcs
[0]); break;
2157 case 2: result
= nir_fnoise2_2(&b
, srcs
[0]); break;
2158 case 3: result
= nir_fnoise2_3(&b
, srcs
[0]); break;
2159 case 4: result
= nir_fnoise2_4(&b
, srcs
[0]); break;
2160 default: unreachable("not reached");
2164 switch (ir
->operands
[0]->type
->vector_elements
) {
2165 case 1: result
= nir_fnoise3_1(&b
, srcs
[0]); break;
2166 case 2: result
= nir_fnoise3_2(&b
, srcs
[0]); break;
2167 case 3: result
= nir_fnoise3_3(&b
, srcs
[0]); break;
2168 case 4: result
= nir_fnoise3_4(&b
, srcs
[0]); break;
2169 default: unreachable("not reached");
2173 switch (ir
->operands
[0]->type
->vector_elements
) {
2174 case 1: result
= nir_fnoise4_1(&b
, srcs
[0]); break;
2175 case 2: result
= nir_fnoise4_2(&b
, srcs
[0]); break;
2176 case 3: result
= nir_fnoise4_3(&b
, srcs
[0]); break;
2177 case 4: result
= nir_fnoise4_4(&b
, srcs
[0]); break;
2178 default: unreachable("not reached");
2182 unreachable("not reached");
2185 case ir_unop_get_buffer_size
: {
2186 nir_intrinsic_instr
*load
= nir_intrinsic_instr_create(
2188 nir_intrinsic_get_buffer_size
);
2189 load
->num_components
= ir
->type
->vector_elements
;
2190 load
->src
[0] = nir_src_for_ssa(evaluate_rvalue(ir
->operands
[0]));
2191 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2192 add_instr(&load
->instr
, ir
->type
->vector_elements
, bit_size
);
2197 result
= nir_atan(&b
, srcs
[0]);
2201 result
= type_is_float(out_type
) ? nir_fadd(&b
, srcs
[0], srcs
[1])
2202 : nir_iadd(&b
, srcs
[0], srcs
[1]);
2205 result
= type_is_float(out_type
) ? nir_fsub(&b
, srcs
[0], srcs
[1])
2206 : nir_isub(&b
, srcs
[0], srcs
[1]);
2209 if (type_is_float(out_type
))
2210 result
= nir_fmul(&b
, srcs
[0], srcs
[1]);
2211 else if (out_type
== GLSL_TYPE_INT64
&&
2212 (ir
->operands
[0]->type
->base_type
== GLSL_TYPE_INT
||
2213 ir
->operands
[1]->type
->base_type
== GLSL_TYPE_INT
))
2214 result
= nir_imul_2x32_64(&b
, srcs
[0], srcs
[1]);
2215 else if (out_type
== GLSL_TYPE_UINT64
&&
2216 (ir
->operands
[0]->type
->base_type
== GLSL_TYPE_UINT
||
2217 ir
->operands
[1]->type
->base_type
== GLSL_TYPE_UINT
))
2218 result
= nir_umul_2x32_64(&b
, srcs
[0], srcs
[1]);
2220 result
= nir_imul(&b
, srcs
[0], srcs
[1]);
2223 if (type_is_float(out_type
))
2224 result
= nir_fdiv(&b
, srcs
[0], srcs
[1]);
2225 else if (type_is_signed(out_type
))
2226 result
= nir_idiv(&b
, srcs
[0], srcs
[1]);
2228 result
= nir_udiv(&b
, srcs
[0], srcs
[1]);
2231 result
= type_is_float(out_type
) ? nir_fmod(&b
, srcs
[0], srcs
[1])
2232 : nir_umod(&b
, srcs
[0], srcs
[1]);
2235 if (type_is_float(out_type
))
2236 result
= nir_fmin(&b
, srcs
[0], srcs
[1]);
2237 else if (type_is_signed(out_type
))
2238 result
= nir_imin(&b
, srcs
[0], srcs
[1]);
2240 result
= nir_umin(&b
, srcs
[0], srcs
[1]);
2243 if (type_is_float(out_type
))
2244 result
= nir_fmax(&b
, srcs
[0], srcs
[1]);
2245 else if (type_is_signed(out_type
))
2246 result
= nir_imax(&b
, srcs
[0], srcs
[1]);
2248 result
= nir_umax(&b
, srcs
[0], srcs
[1]);
2250 case ir_binop_pow
: result
= nir_fpow(&b
, srcs
[0], srcs
[1]); break;
2251 case ir_binop_bit_and
: result
= nir_iand(&b
, srcs
[0], srcs
[1]); break;
2252 case ir_binop_bit_or
: result
= nir_ior(&b
, srcs
[0], srcs
[1]); break;
2253 case ir_binop_bit_xor
: result
= nir_ixor(&b
, srcs
[0], srcs
[1]); break;
2254 case ir_binop_logic_and
:
2255 result
= nir_iand(&b
, srcs
[0], srcs
[1]);
2257 case ir_binop_logic_or
:
2258 result
= nir_ior(&b
, srcs
[0], srcs
[1]);
2260 case ir_binop_logic_xor
:
2261 result
= nir_ixor(&b
, srcs
[0], srcs
[1]);
2263 case ir_binop_lshift
: result
= nir_ishl(&b
, srcs
[0], srcs
[1]); break;
2264 case ir_binop_rshift
:
2265 result
= (type_is_signed(out_type
)) ? nir_ishr(&b
, srcs
[0], srcs
[1])
2266 : nir_ushr(&b
, srcs
[0], srcs
[1]);
2268 case ir_binop_imul_high
:
2269 result
= (out_type
== GLSL_TYPE_INT
) ? nir_imul_high(&b
, srcs
[0], srcs
[1])
2270 : nir_umul_high(&b
, srcs
[0], srcs
[1]);
2272 case ir_binop_carry
: result
= nir_uadd_carry(&b
, srcs
[0], srcs
[1]); break;
2273 case ir_binop_borrow
: result
= nir_usub_borrow(&b
, srcs
[0], srcs
[1]); break;
2275 if (type_is_float(types
[0]))
2276 result
= nir_flt(&b
, srcs
[0], srcs
[1]);
2277 else if (type_is_signed(types
[0]))
2278 result
= nir_ilt(&b
, srcs
[0], srcs
[1]);
2280 result
= nir_ult(&b
, srcs
[0], srcs
[1]);
2282 case ir_binop_gequal
:
2283 if (type_is_float(types
[0]))
2284 result
= nir_fge(&b
, srcs
[0], srcs
[1]);
2285 else if (type_is_signed(types
[0]))
2286 result
= nir_ige(&b
, srcs
[0], srcs
[1]);
2288 result
= nir_uge(&b
, srcs
[0], srcs
[1]);
2290 case ir_binop_equal
:
2291 if (type_is_float(types
[0]))
2292 result
= nir_feq(&b
, srcs
[0], srcs
[1]);
2294 result
= nir_ieq(&b
, srcs
[0], srcs
[1]);
2296 case ir_binop_nequal
:
2297 if (type_is_float(types
[0]))
2298 result
= nir_fne(&b
, srcs
[0], srcs
[1]);
2300 result
= nir_ine(&b
, srcs
[0], srcs
[1]);
2302 case ir_binop_all_equal
:
2303 if (type_is_float(types
[0])) {
2304 switch (ir
->operands
[0]->type
->vector_elements
) {
2305 case 1: result
= nir_feq(&b
, srcs
[0], srcs
[1]); break;
2306 case 2: result
= nir_ball_fequal2(&b
, srcs
[0], srcs
[1]); break;
2307 case 3: result
= nir_ball_fequal3(&b
, srcs
[0], srcs
[1]); break;
2308 case 4: result
= nir_ball_fequal4(&b
, srcs
[0], srcs
[1]); break;
2310 unreachable("not reached");
2313 switch (ir
->operands
[0]->type
->vector_elements
) {
2314 case 1: result
= nir_ieq(&b
, srcs
[0], srcs
[1]); break;
2315 case 2: result
= nir_ball_iequal2(&b
, srcs
[0], srcs
[1]); break;
2316 case 3: result
= nir_ball_iequal3(&b
, srcs
[0], srcs
[1]); break;
2317 case 4: result
= nir_ball_iequal4(&b
, srcs
[0], srcs
[1]); break;
2319 unreachable("not reached");
2323 case ir_binop_any_nequal
:
2324 if (type_is_float(types
[0])) {
2325 switch (ir
->operands
[0]->type
->vector_elements
) {
2326 case 1: result
= nir_fne(&b
, srcs
[0], srcs
[1]); break;
2327 case 2: result
= nir_bany_fnequal2(&b
, srcs
[0], srcs
[1]); break;
2328 case 3: result
= nir_bany_fnequal3(&b
, srcs
[0], srcs
[1]); break;
2329 case 4: result
= nir_bany_fnequal4(&b
, srcs
[0], srcs
[1]); break;
2331 unreachable("not reached");
2334 switch (ir
->operands
[0]->type
->vector_elements
) {
2335 case 1: result
= nir_ine(&b
, srcs
[0], srcs
[1]); break;
2336 case 2: result
= nir_bany_inequal2(&b
, srcs
[0], srcs
[1]); break;
2337 case 3: result
= nir_bany_inequal3(&b
, srcs
[0], srcs
[1]); break;
2338 case 4: result
= nir_bany_inequal4(&b
, srcs
[0], srcs
[1]); break;
2340 unreachable("not reached");
2345 switch (ir
->operands
[0]->type
->vector_elements
) {
2346 case 2: result
= nir_fdot2(&b
, srcs
[0], srcs
[1]); break;
2347 case 3: result
= nir_fdot3(&b
, srcs
[0], srcs
[1]); break;
2348 case 4: result
= nir_fdot4(&b
, srcs
[0], srcs
[1]); break;
2350 unreachable("not reached");
2353 case ir_binop_vector_extract
: {
2354 result
= nir_channel(&b
, srcs
[0], 0);
2355 for (unsigned i
= 1; i
< ir
->operands
[0]->type
->vector_elements
; i
++) {
2356 nir_ssa_def
*swizzled
= nir_channel(&b
, srcs
[0], i
);
2357 result
= nir_bcsel(&b
, nir_ieq(&b
, srcs
[1], nir_imm_int(&b
, i
)),
2363 case ir_binop_atan2
:
2364 result
= nir_atan2(&b
, srcs
[0], srcs
[1]);
2367 case ir_binop_ldexp
: result
= nir_ldexp(&b
, srcs
[0], srcs
[1]); break;
2369 result
= nir_ffma(&b
, srcs
[0], srcs
[1], srcs
[2]);
2372 result
= nir_flrp(&b
, srcs
[0], srcs
[1], srcs
[2]);
2375 result
= nir_bcsel(&b
, srcs
[0], srcs
[1], srcs
[2]);
2377 case ir_triop_bitfield_extract
:
2378 result
= (out_type
== GLSL_TYPE_INT
) ?
2379 nir_ibitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]) :
2380 nir_ubitfield_extract(&b
, srcs
[0], srcs
[1], srcs
[2]);
2382 case ir_quadop_bitfield_insert
:
2383 result
= nir_bitfield_insert(&b
, srcs
[0], srcs
[1], srcs
[2], srcs
[3]);
2385 case ir_quadop_vector
:
2386 result
= nir_vec(&b
, srcs
, ir
->type
->vector_elements
);
2390 unreachable("not reached");
2395 nir_visitor::visit(ir_swizzle
*ir
)
2397 unsigned swizzle
[4] = { ir
->mask
.x
, ir
->mask
.y
, ir
->mask
.z
, ir
->mask
.w
};
2398 result
= nir_swizzle(&b
, evaluate_rvalue(ir
->val
), swizzle
,
2399 ir
->type
->vector_elements
);
2403 nir_visitor::visit(ir_texture
*ir
)
2410 num_srcs
= 1; /* coordinate */
2415 op
= (ir
->op
== ir_txb
) ? nir_texop_txb
: nir_texop_txl
;
2416 num_srcs
= 2; /* coordinate, bias/lod */
2420 op
= nir_texop_txd
; /* coordinate, dPdx, dPdy */
2426 if (ir
->lod_info
.lod
!= NULL
)
2427 num_srcs
= 2; /* coordinate, lod */
2429 num_srcs
= 1; /* coordinate */
2433 op
= nir_texop_txf_ms
;
2434 num_srcs
= 2; /* coordinate, sample_index */
2439 if (ir
->lod_info
.lod
!= NULL
)
2440 num_srcs
= 1; /* lod */
2447 num_srcs
= 1; /* coordinate */
2452 num_srcs
= 1; /* coordinate */
2455 case ir_query_levels
:
2456 op
= nir_texop_query_levels
;
2460 case ir_texture_samples
:
2461 op
= nir_texop_texture_samples
;
2465 case ir_samples_identical
:
2466 op
= nir_texop_samples_identical
;
2467 num_srcs
= 1; /* coordinate */
2471 unreachable("not reached");
2474 if (ir
->projector
!= NULL
)
2476 if (ir
->shadow_comparator
!= NULL
)
2478 /* offsets are constants we store inside nir_tex_intrs.offsets */
2479 if (ir
->offset
!= NULL
&& !ir
->offset
->type
->is_array())
2482 /* Add one for the texture deref */
2485 nir_tex_instr
*instr
= nir_tex_instr_create(this->shader
, num_srcs
);
2488 instr
->sampler_dim
=
2489 (glsl_sampler_dim
) ir
->sampler
->type
->sampler_dimensionality
;
2490 instr
->is_array
= ir
->sampler
->type
->sampler_array
;
2491 instr
->is_shadow
= ir
->sampler
->type
->sampler_shadow
;
2492 if (instr
->is_shadow
)
2493 instr
->is_new_style_shadow
= (ir
->type
->vector_elements
== 1);
2494 switch (ir
->type
->base_type
) {
2495 case GLSL_TYPE_FLOAT
:
2496 instr
->dest_type
= nir_type_float
;
2499 instr
->dest_type
= nir_type_int
;
2501 case GLSL_TYPE_BOOL
:
2502 case GLSL_TYPE_UINT
:
2503 instr
->dest_type
= nir_type_uint
;
2506 unreachable("not reached");
2509 nir_deref_instr
*sampler_deref
= evaluate_deref(ir
->sampler
);
2511 /* check for bindless handles */
2512 if (sampler_deref
->mode
!= nir_var_uniform
||
2513 nir_deref_instr_get_variable(sampler_deref
)->data
.bindless
) {
2514 nir_ssa_def
*load
= nir_load_deref(&b
, sampler_deref
);
2515 instr
->src
[0].src
= nir_src_for_ssa(load
);
2516 instr
->src
[0].src_type
= nir_tex_src_texture_handle
;
2517 instr
->src
[1].src
= nir_src_for_ssa(load
);
2518 instr
->src
[1].src_type
= nir_tex_src_sampler_handle
;
2520 instr
->src
[0].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2521 instr
->src
[0].src_type
= nir_tex_src_texture_deref
;
2522 instr
->src
[1].src
= nir_src_for_ssa(&sampler_deref
->dest
.ssa
);
2523 instr
->src
[1].src_type
= nir_tex_src_sampler_deref
;
2526 unsigned src_number
= 2;
2528 if (ir
->coordinate
!= NULL
) {
2529 instr
->coord_components
= ir
->coordinate
->type
->vector_elements
;
2530 instr
->src
[src_number
].src
=
2531 nir_src_for_ssa(evaluate_rvalue(ir
->coordinate
));
2532 instr
->src
[src_number
].src_type
= nir_tex_src_coord
;
2536 if (ir
->projector
!= NULL
) {
2537 instr
->src
[src_number
].src
=
2538 nir_src_for_ssa(evaluate_rvalue(ir
->projector
));
2539 instr
->src
[src_number
].src_type
= nir_tex_src_projector
;
2543 if (ir
->shadow_comparator
!= NULL
) {
2544 instr
->src
[src_number
].src
=
2545 nir_src_for_ssa(evaluate_rvalue(ir
->shadow_comparator
));
2546 instr
->src
[src_number
].src_type
= nir_tex_src_comparator
;
2550 if (ir
->offset
!= NULL
) {
2551 if (ir
->offset
->type
->is_array()) {
2552 for (int i
= 0; i
< ir
->offset
->type
->array_size(); i
++) {
2553 const ir_constant
*c
=
2554 ir
->offset
->as_constant()->get_array_element(i
);
2556 for (unsigned j
= 0; j
< 2; ++j
) {
2557 int val
= c
->get_int_component(j
);
2558 assert(val
<= 31 && val
>= -32);
2559 instr
->tg4_offsets
[i
][j
] = val
;
2563 assert(ir
->offset
->type
->is_vector() || ir
->offset
->type
->is_scalar());
2565 instr
->src
[src_number
].src
=
2566 nir_src_for_ssa(evaluate_rvalue(ir
->offset
));
2567 instr
->src
[src_number
].src_type
= nir_tex_src_offset
;
2574 instr
->src
[src_number
].src
=
2575 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.bias
));
2576 instr
->src
[src_number
].src_type
= nir_tex_src_bias
;
2583 if (ir
->lod_info
.lod
!= NULL
) {
2584 instr
->src
[src_number
].src
=
2585 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.lod
));
2586 instr
->src
[src_number
].src_type
= nir_tex_src_lod
;
2592 instr
->src
[src_number
].src
=
2593 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdx
));
2594 instr
->src
[src_number
].src_type
= nir_tex_src_ddx
;
2596 instr
->src
[src_number
].src
=
2597 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.grad
.dPdy
));
2598 instr
->src
[src_number
].src_type
= nir_tex_src_ddy
;
2603 instr
->src
[src_number
].src
=
2604 nir_src_for_ssa(evaluate_rvalue(ir
->lod_info
.sample_index
));
2605 instr
->src
[src_number
].src_type
= nir_tex_src_ms_index
;
2610 instr
->component
= ir
->lod_info
.component
->as_constant()->value
.u
[0];
2617 assert(src_number
== num_srcs
);
2619 unsigned bit_size
= glsl_get_bit_size(ir
->type
);
2620 add_instr(&instr
->instr
, nir_tex_instr_dest_size(instr
), bit_size
);
2624 nir_visitor::visit(ir_constant
*ir
)
2627 * We don't know if this variable is an array or struct that gets
2628 * dereferenced, so do the safe thing an make it a variable with a
2629 * constant initializer and return a dereference.
2633 nir_local_variable_create(this->impl
, ir
->type
, "const_temp");
2634 var
->data
.read_only
= true;
2635 var
->constant_initializer
= constant_copy(ir
, var
);
2637 this->deref
= nir_build_deref_var(&b
, var
);
2641 nir_visitor::visit(ir_dereference_variable
*ir
)
2643 if (ir
->variable_referenced()->data
.mode
== ir_var_function_out
) {
2644 unsigned i
= (sig
->return_type
!= glsl_type::void_type
) ? 1 : 0;
2646 foreach_in_list(ir_variable
, param
, &sig
->parameters
) {
2647 if (param
== ir
->variable_referenced()) {
2653 this->deref
= nir_build_deref_cast(&b
, nir_load_param(&b
, i
),
2654 nir_var_function_temp
, ir
->type
, 0);
2658 assert(ir
->variable_referenced()->data
.mode
!= ir_var_function_inout
);
2660 struct hash_entry
*entry
=
2661 _mesa_hash_table_search(this->var_table
, ir
->var
);
2663 nir_variable
*var
= (nir_variable
*) entry
->data
;
2665 this->deref
= nir_build_deref_var(&b
, var
);
2669 nir_visitor::visit(ir_dereference_record
*ir
)
2671 ir
->record
->accept(this);
2673 int field_index
= ir
->field_idx
;
2674 assert(field_index
>= 0);
2676 this->deref
= nir_build_deref_struct(&b
, this->deref
, field_index
);
2680 nir_visitor::visit(ir_dereference_array
*ir
)
2682 nir_ssa_def
*index
= evaluate_rvalue(ir
->array_index
);
2684 ir
->array
->accept(this);
2686 this->deref
= nir_build_deref_array(&b
, this->deref
, index
);
2690 nir_visitor::visit(ir_barrier
*)
2692 nir_intrinsic_instr
*instr
=
2693 nir_intrinsic_instr_create(this->shader
, nir_intrinsic_barrier
);
2694 nir_builder_instr_insert(&b
, &instr
->instr
);
2698 glsl_float64_funcs_to_nir(struct gl_context
*ctx
,
2699 const nir_shader_compiler_options
*options
)
2701 /* We pretend it's a vertex shader. Ultimately, the stage shouldn't
2702 * matter because we're not optimizing anything here.
2704 struct gl_shader
*sh
= _mesa_new_shader(-1, MESA_SHADER_VERTEX
);
2705 sh
->Source
= float64_source
;
2706 sh
->CompileStatus
= COMPILE_FAILURE
;
2707 _mesa_glsl_compile_shader(ctx
, sh
, false, false, true);
2709 if (!sh
->CompileStatus
) {
2712 "fp64 software impl compile failed:\n%s\nsource:\n%s\n",
2713 sh
->InfoLog
, float64_source
);
2718 nir_shader
*nir
= nir_shader_create(NULL
, MESA_SHADER_VERTEX
, options
, NULL
);
2720 nir_visitor
v1(ctx
, nir
);
2721 nir_function_visitor
v2(&v1
);
2723 visit_exec_list(sh
->ir
, &v1
);
2725 /* _mesa_delete_shader will try to free sh->Source but it's static const */
2727 _mesa_delete_shader(ctx
, sh
);
2729 nir_validate_shader(nir
, "float64_funcs_to_nir");
2731 NIR_PASS_V(nir
, nir_lower_constant_initializers
, nir_var_function_temp
);
2732 NIR_PASS_V(nir
, nir_lower_returns
);
2733 NIR_PASS_V(nir
, nir_inline_functions
);
2734 NIR_PASS_V(nir
, nir_opt_deref
);
2736 /* Do some optimizations to clean up the shader now. By optimizing the
2737 * functions in the library, we avoid having to re-do that work every
2738 * time we inline a copy of a function. Reducing basic blocks also helps
2739 * with compile times.
2741 NIR_PASS_V(nir
, nir_lower_vars_to_ssa
);
2742 NIR_PASS_V(nir
, nir_copy_prop
);
2743 NIR_PASS_V(nir
, nir_opt_dce
);
2744 NIR_PASS_V(nir
, nir_opt_cse
);
2745 NIR_PASS_V(nir
, nir_opt_gcm
, true);
2746 NIR_PASS_V(nir
, nir_opt_peephole_select
, 1, false, false);
2747 NIR_PASS_V(nir
, nir_opt_dce
);