2 * Copyright © 2014 Connor Abbott
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)
31 #include "util/hash_table.h"
32 #include "compiler/glsl/list.h"
33 #include "GL/gl.h" /* GLenum */
34 #include "util/list.h"
35 #include "util/ralloc.h"
37 #include "util/bitscan.h"
38 #include "util/bitset.h"
39 #include "util/macros.h"
40 #include "compiler/nir_types.h"
41 #include "compiler/shader_enums.h"
42 #include "compiler/shader_info.h"
46 #include "util/debug.h"
49 #include "nir_opcodes.h"
51 #if defined(_WIN32) && !defined(snprintf)
52 #define snprintf _snprintf
60 #define NIR_TRUE (~0u)
61 #define NIR_MAX_VEC_COMPONENTS 4
62 #define NIR_MAX_MATRIX_COLUMNS 4
63 #define NIR_STREAM_PACKED (1 << 8)
64 typedef uint8_t nir_component_mask_t
;
66 /** Defines a cast function
68 * This macro defines a cast function from in_type to out_type where
69 * out_type is some structure type that contains a field of type out_type.
71 * Note that you have to be a bit careful as the generated cast function
74 #define NIR_DEFINE_CAST(name, in_type, out_type, field, \
75 type_field, type_value) \
76 static inline out_type * \
77 name(const in_type *parent) \
79 assert(parent && parent->type_field == type_value); \
80 return exec_node_data(out_type, parent, field); \
90 * Description of built-in state associated with a uniform
92 * \sa nir_variable::state_slots
95 gl_state_index16 tokens
[STATE_LENGTH
];
100 nir_var_shader_in
= (1 << 0),
101 nir_var_shader_out
= (1 << 1),
102 nir_var_shader_temp
= (1 << 2),
103 nir_var_function_temp
= (1 << 3),
104 nir_var_uniform
= (1 << 4),
105 nir_var_mem_ubo
= (1 << 5),
106 nir_var_system_value
= (1 << 6),
107 nir_var_mem_ssbo
= (1 << 7),
108 nir_var_mem_shared
= (1 << 8),
109 nir_var_mem_global
= (1 << 9),
117 nir_rounding_mode_undef
= 0,
118 nir_rounding_mode_rtne
= 1, /* round to nearest even */
119 nir_rounding_mode_ru
= 2, /* round up */
120 nir_rounding_mode_rd
= 3, /* round down */
121 nir_rounding_mode_rtz
= 4, /* round towards zero */
138 #define nir_const_value_to_array(arr, c, components, m) \
140 for (unsigned i = 0; i < components; ++i) \
144 static inline nir_const_value
145 nir_const_value_for_raw_uint(uint64_t x
, unsigned bit_size
)
148 memset(&v
, 0, sizeof(v
));
151 case 1: v
.b
= x
; break;
152 case 8: v
.u8
= x
; break;
153 case 16: v
.u16
= x
; break;
154 case 32: v
.u32
= x
; break;
155 case 64: v
.u64
= x
; break;
157 unreachable("Invalid bit size");
163 static inline nir_const_value
164 nir_const_value_for_int(int64_t i
, unsigned bit_size
)
167 memset(&v
, 0, sizeof(v
));
169 assert(bit_size
<= 64);
171 assert(i
>= (-(1ll << (bit_size
- 1))));
172 assert(i
< (1ll << (bit_size
- 1)));
175 return nir_const_value_for_raw_uint(i
, bit_size
);
178 static inline nir_const_value
179 nir_const_value_for_uint(uint64_t u
, unsigned bit_size
)
182 memset(&v
, 0, sizeof(v
));
184 assert(bit_size
<= 64);
186 assert(u
< (1ull << bit_size
));
188 return nir_const_value_for_raw_uint(u
, bit_size
);
191 static inline nir_const_value
192 nir_const_value_for_bool(bool b
, unsigned bit_size
)
194 /* Booleans use a 0/-1 convention */
195 return nir_const_value_for_int(-(int)b
, bit_size
);
198 /* This one isn't inline because it requires half-float conversion */
199 nir_const_value
nir_const_value_for_float(double b
, unsigned bit_size
);
201 static inline int64_t
202 nir_const_value_as_int(nir_const_value value
, unsigned bit_size
)
205 /* int1_t uses 0/-1 convention */
206 case 1: return -(int)value
.b
;
207 case 8: return value
.i8
;
208 case 16: return value
.i16
;
209 case 32: return value
.i32
;
210 case 64: return value
.i64
;
212 unreachable("Invalid bit size");
216 static inline uint64_t
217 nir_const_value_as_uint(nir_const_value value
, unsigned bit_size
)
220 case 1: return value
.b
;
221 case 8: return value
.u8
;
222 case 16: return value
.u16
;
223 case 32: return value
.u32
;
224 case 64: return value
.u64
;
226 unreachable("Invalid bit size");
231 nir_const_value_as_bool(nir_const_value value
, unsigned bit_size
)
233 int64_t i
= nir_const_value_as_int(value
, bit_size
);
235 /* Booleans of any size use 0/-1 convention */
236 assert(i
== 0 || i
== -1);
241 /* This one isn't inline because it requires half-float conversion */
242 double nir_const_value_as_float(nir_const_value value
, unsigned bit_size
);
244 typedef struct nir_constant
{
246 * Value of the constant.
248 * The field used to back the values supplied by the constant is determined
249 * by the type associated with the \c nir_variable. Constants may be
250 * scalars, vectors, or matrices.
252 nir_const_value values
[NIR_MAX_VEC_COMPONENTS
];
254 /* we could get this from the var->type but makes clone *much* easier to
255 * not have to care about the type.
257 unsigned num_elements
;
259 /* Array elements / Structure Fields */
260 struct nir_constant
**elements
;
264 * \brief Layout qualifiers for gl_FragDepth.
266 * The AMD/ARB_conservative_depth extensions allow gl_FragDepth to be redeclared
267 * with a layout qualifier.
270 nir_depth_layout_none
, /**< No depth layout is specified. */
271 nir_depth_layout_any
,
272 nir_depth_layout_greater
,
273 nir_depth_layout_less
,
274 nir_depth_layout_unchanged
278 * Enum keeping track of how a variable was declared.
282 * Normal declaration.
284 nir_var_declared_normally
= 0,
287 * Variable is implicitly generated by the compiler and should not be
288 * visible via the API.
291 } nir_var_declaration_type
;
294 * Either a uniform, global variable, shader input, or shader output. Based on
295 * ir_variable - it should be easy to translate between the two.
298 typedef struct nir_variable
{
299 struct exec_node node
;
302 * Declared type of the variable
304 const struct glsl_type
*type
;
307 * Declared name of the variable
311 struct nir_variable_data
{
313 * Storage class of the variable.
315 * \sa nir_variable_mode
317 nir_variable_mode mode
;
320 * Is the variable read-only?
322 * This is set for variables declared as \c const, shader inputs,
325 unsigned read_only
:1;
329 unsigned invariant
:1;
332 * Can this variable be coalesced with another?
334 * This is set by nir_lower_io_to_temporaries to say that any
335 * copies involving this variable should stay put. Propagating it can
336 * duplicate the resulting load/store, which is not wanted, and may
337 * result in a load/store of the variable with an indirect offset which
338 * the backend may not be able to handle.
340 unsigned cannot_coalesce
:1;
343 * When separate shader programs are enabled, only input/outputs between
344 * the stages of a multi-stage separate program can be safely removed
345 * from the shader interface. Other input/outputs must remains active.
347 * This is also used to make sure xfb varyings that are unused by the
348 * fragment shader are not removed.
350 unsigned always_active_io
:1;
353 * Interpolation mode for shader inputs / outputs
355 * \sa glsl_interp_mode
357 unsigned interpolation
:2;
360 * If non-zero, then this variable may be packed along with other variables
361 * into a single varying slot, so this offset should be applied when
362 * accessing components. For example, an offset of 1 means that the x
363 * component of this variable is actually stored in component y of the
364 * location specified by \c location.
366 unsigned location_frac
:2;
369 * If true, this variable represents an array of scalars that should
370 * be tightly packed. In other words, consecutive array elements
371 * should be stored one component apart, rather than one slot apart.
376 * Whether this is a fragment shader output implicitly initialized with
377 * the previous contents of the specified render target at the
378 * framebuffer location corresponding to this shader invocation.
380 unsigned fb_fetch_output
:1;
383 * Non-zero if this variable is considered bindless as defined by
384 * ARB_bindless_texture.
389 * Was an explicit binding set in the shader?
391 unsigned explicit_binding
:1;
394 * Was a transfer feedback buffer set in the shader?
396 unsigned explicit_xfb_buffer
:1;
399 * Was a transfer feedback stride set in the shader?
401 unsigned explicit_xfb_stride
:1;
404 * Was an explicit offset set in the shader?
406 unsigned explicit_offset
:1;
409 * How the variable was declared. See nir_var_declaration_type.
411 * This is used to detect variables generated by the compiler, so should
412 * not be visible via the API.
414 unsigned how_declared
:2;
417 * \brief Layout qualifier for gl_FragDepth.
419 * This is not equal to \c ir_depth_layout_none if and only if this
420 * variable is \c gl_FragDepth and a layout qualifier is specified.
422 nir_depth_layout depth_layout
;
425 * Storage location of the base of this variable
427 * The precise meaning of this field depends on the nature of the variable.
429 * - Vertex shader input: one of the values from \c gl_vert_attrib.
430 * - Vertex shader output: one of the values from \c gl_varying_slot.
431 * - Geometry shader input: one of the values from \c gl_varying_slot.
432 * - Geometry shader output: one of the values from \c gl_varying_slot.
433 * - Fragment shader input: one of the values from \c gl_varying_slot.
434 * - Fragment shader output: one of the values from \c gl_frag_result.
435 * - Uniforms: Per-stage uniform slot number for default uniform block.
436 * - Uniforms: Index within the uniform block definition for UBO members.
437 * - Non-UBO Uniforms: uniform slot number.
438 * - Other: This field is not currently used.
440 * If the variable is a uniform, shader input, or shader output, and the
441 * slot has not been assigned, the value will be -1.
446 * The actual location of the variable in the IR. Only valid for inputs
449 unsigned int driver_location
;
452 * Vertex stream output identifier.
454 * For packed outputs, NIR_STREAM_PACKED is set and bits [2*i+1,2*i]
455 * indicate the stream of the i-th component.
460 * output index for dual source blending.
465 * Descriptor set binding for sampler or UBO.
470 * Initial binding point for a sampler or UBO.
472 * For array types, this represents the binding point for the first element.
477 * Location an atomic counter or transform feedback is stored at.
482 * Transform feedback buffer.
487 * Transform feedback stride.
492 * ARB_shader_image_load_store qualifiers.
495 enum gl_access_qualifier access
;
497 /** Image internal format if specified explicitly, otherwise GL_NONE. */
502 /* Number of nir_variable_data members */
503 unsigned num_members
;
506 * Built-in state that backs this uniform
508 * Once set at variable creation, \c state_slots must remain invariant.
509 * This is because, ideally, this array would be shared by all clones of
510 * this variable in the IR tree. In other words, we'd really like for it
511 * to be a fly-weight.
513 * If the variable is not a uniform, \c num_state_slots will be zero and
514 * \c state_slots will be \c NULL.
517 unsigned num_state_slots
; /**< Number of state slots used */
518 nir_state_slot
*state_slots
; /**< State descriptors. */
522 * Constant expression assigned in the initializer of the variable
524 * This field should only be used temporarily by creators of NIR shaders
525 * and then lower_constant_initializers can be used to get rid of them.
526 * Most of the rest of NIR ignores this field or asserts that it's NULL.
528 nir_constant
*constant_initializer
;
531 * For variables that are in an interface block or are an instance of an
532 * interface block, this is the \c GLSL_TYPE_INTERFACE type for that block.
534 * \sa ir_variable::location
536 const struct glsl_type
*interface_type
;
539 * Description of per-member data for per-member struct variables
541 * This is used for variables which are actually an amalgamation of
542 * multiple entities such as a struct of built-in values or a struct of
543 * inputs each with their own layout specifier. This is only allowed on
544 * variables with a struct or array of array of struct type.
546 struct nir_variable_data
*members
;
549 #define nir_foreach_variable(var, var_list) \
550 foreach_list_typed(nir_variable, var, node, var_list)
552 #define nir_foreach_variable_safe(var, var_list) \
553 foreach_list_typed_safe(nir_variable, var, node, var_list)
556 nir_variable_is_global(const nir_variable
*var
)
558 return var
->data
.mode
!= nir_var_function_temp
;
561 typedef struct nir_register
{
562 struct exec_node node
;
564 unsigned num_components
; /** < number of vector components */
565 unsigned num_array_elems
; /** < size of array (0 for no array) */
567 /* The bit-size of each channel; must be one of 8, 16, 32, or 64 */
570 /** generic register index. */
573 /** only for debug purposes, can be NULL */
576 /** set of nir_srcs where this register is used (read from) */
577 struct list_head uses
;
579 /** set of nir_dests where this register is defined (written to) */
580 struct list_head defs
;
582 /** set of nir_ifs where this register is used as a condition */
583 struct list_head if_uses
;
586 #define nir_foreach_register(reg, reg_list) \
587 foreach_list_typed(nir_register, reg, node, reg_list)
588 #define nir_foreach_register_safe(reg, reg_list) \
589 foreach_list_typed_safe(nir_register, reg, node, reg_list)
591 typedef enum PACKED
{
593 nir_instr_type_deref
,
596 nir_instr_type_intrinsic
,
597 nir_instr_type_load_const
,
599 nir_instr_type_ssa_undef
,
601 nir_instr_type_parallel_copy
,
604 typedef struct nir_instr
{
605 struct exec_node node
;
606 struct nir_block
*block
;
609 /* A temporary for optimization and analysis passes to use for storing
610 * flags. For instance, DCE uses this to store the "dead/live" info.
614 /** generic instruction index. */
618 static inline nir_instr
*
619 nir_instr_next(nir_instr
*instr
)
621 struct exec_node
*next
= exec_node_get_next(&instr
->node
);
622 if (exec_node_is_tail_sentinel(next
))
625 return exec_node_data(nir_instr
, next
, node
);
628 static inline nir_instr
*
629 nir_instr_prev(nir_instr
*instr
)
631 struct exec_node
*prev
= exec_node_get_prev(&instr
->node
);
632 if (exec_node_is_head_sentinel(prev
))
635 return exec_node_data(nir_instr
, prev
, node
);
639 nir_instr_is_first(const nir_instr
*instr
)
641 return exec_node_is_head_sentinel(exec_node_get_prev_const(&instr
->node
));
645 nir_instr_is_last(const nir_instr
*instr
)
647 return exec_node_is_tail_sentinel(exec_node_get_next_const(&instr
->node
));
650 typedef struct nir_ssa_def
{
651 /** for debugging only, can be NULL */
654 /** generic SSA definition index. */
657 /** Index into the live_in and live_out bitfields */
660 /** Instruction which produces this SSA value. */
661 nir_instr
*parent_instr
;
663 /** set of nir_instrs where this register is used (read from) */
664 struct list_head uses
;
666 /** set of nir_ifs where this register is used as a condition */
667 struct list_head if_uses
;
669 uint8_t num_components
;
671 /* The bit-size of each channel; must be one of 8, 16, 32, or 64 */
679 struct nir_src
*indirect
; /** < NULL for no indirect offset */
680 unsigned base_offset
;
682 /* TODO use-def chain goes here */
686 nir_instr
*parent_instr
;
687 struct list_head def_link
;
690 struct nir_src
*indirect
; /** < NULL for no indirect offset */
691 unsigned base_offset
;
693 /* TODO def-use chain goes here */
698 typedef struct nir_src
{
700 /** Instruction that consumes this value as a source. */
701 nir_instr
*parent_instr
;
702 struct nir_if
*parent_if
;
705 struct list_head use_link
;
715 static inline nir_src
718 nir_src src
= { { NULL
} };
722 #define NIR_SRC_INIT nir_src_init()
724 #define nir_foreach_use(src, reg_or_ssa_def) \
725 list_for_each_entry(nir_src, src, &(reg_or_ssa_def)->uses, use_link)
727 #define nir_foreach_use_safe(src, reg_or_ssa_def) \
728 list_for_each_entry_safe(nir_src, src, &(reg_or_ssa_def)->uses, use_link)
730 #define nir_foreach_if_use(src, reg_or_ssa_def) \
731 list_for_each_entry(nir_src, src, &(reg_or_ssa_def)->if_uses, use_link)
733 #define nir_foreach_if_use_safe(src, reg_or_ssa_def) \
734 list_for_each_entry_safe(nir_src, src, &(reg_or_ssa_def)->if_uses, use_link)
745 static inline nir_dest
748 nir_dest dest
= { { { NULL
} } };
752 #define NIR_DEST_INIT nir_dest_init()
754 #define nir_foreach_def(dest, reg) \
755 list_for_each_entry(nir_dest, dest, &(reg)->defs, reg.def_link)
757 #define nir_foreach_def_safe(dest, reg) \
758 list_for_each_entry_safe(nir_dest, dest, &(reg)->defs, reg.def_link)
760 static inline nir_src
761 nir_src_for_ssa(nir_ssa_def
*def
)
763 nir_src src
= NIR_SRC_INIT
;
771 static inline nir_src
772 nir_src_for_reg(nir_register
*reg
)
774 nir_src src
= NIR_SRC_INIT
;
778 src
.reg
.indirect
= NULL
;
779 src
.reg
.base_offset
= 0;
784 static inline nir_dest
785 nir_dest_for_reg(nir_register
*reg
)
787 nir_dest dest
= NIR_DEST_INIT
;
794 static inline unsigned
795 nir_src_bit_size(nir_src src
)
797 return src
.is_ssa
? src
.ssa
->bit_size
: src
.reg
.reg
->bit_size
;
800 static inline unsigned
801 nir_src_num_components(nir_src src
)
803 return src
.is_ssa
? src
.ssa
->num_components
: src
.reg
.reg
->num_components
;
807 nir_src_is_const(nir_src src
)
810 src
.ssa
->parent_instr
->type
== nir_instr_type_load_const
;
813 static inline unsigned
814 nir_dest_bit_size(nir_dest dest
)
816 return dest
.is_ssa
? dest
.ssa
.bit_size
: dest
.reg
.reg
->bit_size
;
819 static inline unsigned
820 nir_dest_num_components(nir_dest dest
)
822 return dest
.is_ssa
? dest
.ssa
.num_components
: dest
.reg
.reg
->num_components
;
825 void nir_src_copy(nir_src
*dest
, const nir_src
*src
, void *instr_or_if
);
826 void nir_dest_copy(nir_dest
*dest
, const nir_dest
*src
, nir_instr
*instr
);
832 * \name input modifiers
836 * For inputs interpreted as floating point, flips the sign bit. For
837 * inputs interpreted as integers, performs the two's complement negation.
842 * Clears the sign bit for floating point values, and computes the integer
843 * absolute value for integers. Note that the negate modifier acts after
844 * the absolute value modifier, therefore if both are set then all inputs
845 * will become negative.
851 * For each input component, says which component of the register it is
852 * chosen from. Note that which elements of the swizzle are used and which
853 * are ignored are based on the write mask for most opcodes - for example,
854 * a statement like "foo.xzw = bar.zyx" would have a writemask of 1101b and
855 * a swizzle of {2, x, 1, 0} where x means "don't care."
857 uint8_t swizzle
[NIR_MAX_VEC_COMPONENTS
];
864 * \name saturate output modifier
866 * Only valid for opcodes that output floating-point numbers. Clamps the
867 * output to between 0.0 and 1.0 inclusive.
872 unsigned write_mask
: NIR_MAX_VEC_COMPONENTS
; /* ignored if dest.is_ssa is true */
875 /** NIR sized and unsized types
877 * The values in this enum are carefully chosen so that the sized type is
878 * just the unsized type OR the number of bits.
881 nir_type_invalid
= 0, /* Not a valid type */
885 nir_type_float
= 128,
886 nir_type_bool1
= 1 | nir_type_bool
,
887 nir_type_bool32
= 32 | nir_type_bool
,
888 nir_type_int1
= 1 | nir_type_int
,
889 nir_type_int8
= 8 | nir_type_int
,
890 nir_type_int16
= 16 | nir_type_int
,
891 nir_type_int32
= 32 | nir_type_int
,
892 nir_type_int64
= 64 | nir_type_int
,
893 nir_type_uint1
= 1 | nir_type_uint
,
894 nir_type_uint8
= 8 | nir_type_uint
,
895 nir_type_uint16
= 16 | nir_type_uint
,
896 nir_type_uint32
= 32 | nir_type_uint
,
897 nir_type_uint64
= 64 | nir_type_uint
,
898 nir_type_float16
= 16 | nir_type_float
,
899 nir_type_float32
= 32 | nir_type_float
,
900 nir_type_float64
= 64 | nir_type_float
,
903 #define NIR_ALU_TYPE_SIZE_MASK 0x79
904 #define NIR_ALU_TYPE_BASE_TYPE_MASK 0x86
906 static inline unsigned
907 nir_alu_type_get_type_size(nir_alu_type type
)
909 return type
& NIR_ALU_TYPE_SIZE_MASK
;
912 static inline unsigned
913 nir_alu_type_get_base_type(nir_alu_type type
)
915 return type
& NIR_ALU_TYPE_BASE_TYPE_MASK
;
918 static inline nir_alu_type
919 nir_get_nir_type_for_glsl_base_type(enum glsl_base_type base_type
)
923 return nir_type_bool1
;
926 return nir_type_uint32
;
929 return nir_type_int32
;
931 case GLSL_TYPE_UINT16
:
932 return nir_type_uint16
;
934 case GLSL_TYPE_INT16
:
935 return nir_type_int16
;
937 case GLSL_TYPE_UINT8
:
938 return nir_type_uint8
;
940 return nir_type_int8
;
941 case GLSL_TYPE_UINT64
:
942 return nir_type_uint64
;
944 case GLSL_TYPE_INT64
:
945 return nir_type_int64
;
947 case GLSL_TYPE_FLOAT
:
948 return nir_type_float32
;
950 case GLSL_TYPE_FLOAT16
:
951 return nir_type_float16
;
953 case GLSL_TYPE_DOUBLE
:
954 return nir_type_float64
;
957 case GLSL_TYPE_SAMPLER
:
958 case GLSL_TYPE_IMAGE
:
959 case GLSL_TYPE_ATOMIC_UINT
:
960 case GLSL_TYPE_STRUCT
:
961 case GLSL_TYPE_INTERFACE
:
962 case GLSL_TYPE_ARRAY
:
964 case GLSL_TYPE_SUBROUTINE
:
965 case GLSL_TYPE_FUNCTION
:
966 case GLSL_TYPE_ERROR
:
967 return nir_type_invalid
;
970 unreachable("unknown type");
973 static inline nir_alu_type
974 nir_get_nir_type_for_glsl_type(const struct glsl_type
*type
)
976 return nir_get_nir_type_for_glsl_base_type(glsl_get_base_type(type
));
979 nir_op
nir_type_conversion_op(nir_alu_type src
, nir_alu_type dst
,
980 nir_rounding_mode rnd
);
983 nir_op_vec(unsigned components
)
985 switch (components
) {
986 case 1: return nir_op_mov
;
987 case 2: return nir_op_vec2
;
988 case 3: return nir_op_vec3
;
989 case 4: return nir_op_vec4
;
990 default: unreachable("bad component count");
995 nir_is_float_control_signed_zero_inf_nan_preserve(unsigned execution_mode
, unsigned bit_size
)
997 return (16 == bit_size
&& execution_mode
& FLOAT_CONTROLS_SIGNED_ZERO_INF_NAN_PRESERVE_FP16
) ||
998 (32 == bit_size
&& execution_mode
& FLOAT_CONTROLS_SIGNED_ZERO_INF_NAN_PRESERVE_FP32
) ||
999 (64 == bit_size
&& execution_mode
& FLOAT_CONTROLS_SIGNED_ZERO_INF_NAN_PRESERVE_FP64
);
1003 nir_is_denorm_flush_to_zero(unsigned execution_mode
, unsigned bit_size
)
1005 return (16 == bit_size
&& execution_mode
& FLOAT_CONTROLS_DENORM_FLUSH_TO_ZERO_FP16
) ||
1006 (32 == bit_size
&& execution_mode
& FLOAT_CONTROLS_DENORM_FLUSH_TO_ZERO_FP32
) ||
1007 (64 == bit_size
&& execution_mode
& FLOAT_CONTROLS_DENORM_FLUSH_TO_ZERO_FP64
);
1011 nir_is_denorm_preserve(unsigned execution_mode
, unsigned bit_size
)
1013 return (16 == bit_size
&& execution_mode
& FLOAT_CONTROLS_DENORM_PRESERVE_FP16
) ||
1014 (32 == bit_size
&& execution_mode
& FLOAT_CONTROLS_DENORM_PRESERVE_FP32
) ||
1015 (64 == bit_size
&& execution_mode
& FLOAT_CONTROLS_DENORM_PRESERVE_FP64
);
1019 nir_is_rounding_mode_rtne(unsigned execution_mode
, unsigned bit_size
)
1021 return (16 == bit_size
&& execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTE_FP16
) ||
1022 (32 == bit_size
&& execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTE_FP32
) ||
1023 (64 == bit_size
&& execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTE_FP64
);
1027 nir_is_rounding_mode_rtz(unsigned execution_mode
, unsigned bit_size
)
1029 return (16 == bit_size
&& execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTZ_FP16
) ||
1030 (32 == bit_size
&& execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTZ_FP32
) ||
1031 (64 == bit_size
&& execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTZ_FP64
);
1035 nir_has_any_rounding_mode_rtz(unsigned execution_mode
)
1037 return (execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTZ_FP16
) ||
1038 (execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTZ_FP32
) ||
1039 (execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTZ_FP64
);
1043 nir_has_any_rounding_mode_rtne(unsigned execution_mode
)
1045 return (execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTE_FP16
) ||
1046 (execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTE_FP32
) ||
1047 (execution_mode
& FLOAT_CONTROLS_ROUNDING_MODE_RTE_FP64
);
1050 static inline nir_rounding_mode
1051 nir_get_rounding_mode_from_float_controls(unsigned execution_mode
,
1054 if (nir_alu_type_get_base_type(type
) != nir_type_float
)
1055 return nir_rounding_mode_undef
;
1057 unsigned bit_size
= nir_alu_type_get_type_size(type
);
1059 if (nir_is_rounding_mode_rtz(execution_mode
, bit_size
))
1060 return nir_rounding_mode_rtz
;
1061 if (nir_is_rounding_mode_rtne(execution_mode
, bit_size
))
1062 return nir_rounding_mode_rtne
;
1063 return nir_rounding_mode_undef
;
1067 nir_has_any_rounding_mode_enabled(unsigned execution_mode
)
1070 nir_has_any_rounding_mode_rtne(execution_mode
) ||
1071 nir_has_any_rounding_mode_rtz(execution_mode
);
1077 * Operation where the first two sources are commutative.
1079 * For 2-source operations, this just mathematical commutativity. Some
1080 * 3-source operations, like ffma, are only commutative in the first two
1083 NIR_OP_IS_2SRC_COMMUTATIVE
= (1 << 0),
1084 NIR_OP_IS_ASSOCIATIVE
= (1 << 1),
1085 } nir_op_algebraic_property
;
1090 unsigned num_inputs
;
1093 * The number of components in the output
1095 * If non-zero, this is the size of the output and input sizes are
1096 * explicitly given; swizzle and writemask are still in effect, but if
1097 * the output component is masked out, then the input component may
1100 * If zero, the opcode acts in the standard, per-component manner; the
1101 * operation is performed on each component (except the ones that are
1102 * masked out) with the input being taken from the input swizzle for
1105 * The size of some of the inputs may be given (i.e. non-zero) even
1106 * though output_size is zero; in that case, the inputs with a zero
1107 * size act per-component, while the inputs with non-zero size don't.
1109 unsigned output_size
;
1112 * The type of vector that the instruction outputs. Note that the
1113 * staurate modifier is only allowed on outputs with the float type.
1116 nir_alu_type output_type
;
1119 * The number of components in each input
1121 unsigned input_sizes
[NIR_MAX_VEC_COMPONENTS
];
1124 * The type of vector that each input takes. Note that negate and
1125 * absolute value are only allowed on inputs with int or float type and
1126 * behave differently on the two.
1128 nir_alu_type input_types
[NIR_MAX_VEC_COMPONENTS
];
1130 nir_op_algebraic_property algebraic_properties
;
1132 /* Whether this represents a numeric conversion opcode */
1136 extern const nir_op_info nir_op_infos
[nir_num_opcodes
];
1138 typedef struct nir_alu_instr
{
1142 /** Indicates that this ALU instruction generates an exact value
1144 * This is kind of a mixture of GLSL "precise" and "invariant" and not
1145 * really equivalent to either. This indicates that the value generated by
1146 * this operation is high-precision and any code transformations that touch
1147 * it must ensure that the resulting value is bit-for-bit identical to the
1153 * Indicates that this instruction do not cause wrapping to occur, in the
1154 * form of overflow or underflow.
1156 bool no_signed_wrap
:1;
1157 bool no_unsigned_wrap
:1;
1163 void nir_alu_src_copy(nir_alu_src
*dest
, const nir_alu_src
*src
,
1164 nir_alu_instr
*instr
);
1165 void nir_alu_dest_copy(nir_alu_dest
*dest
, const nir_alu_dest
*src
,
1166 nir_alu_instr
*instr
);
1168 /* is this source channel used? */
1170 nir_alu_instr_channel_used(const nir_alu_instr
*instr
, unsigned src
,
1173 if (nir_op_infos
[instr
->op
].input_sizes
[src
] > 0)
1174 return channel
< nir_op_infos
[instr
->op
].input_sizes
[src
];
1176 return (instr
->dest
.write_mask
>> channel
) & 1;
1179 static inline nir_component_mask_t
1180 nir_alu_instr_src_read_mask(const nir_alu_instr
*instr
, unsigned src
)
1182 nir_component_mask_t read_mask
= 0;
1183 for (unsigned c
= 0; c
< NIR_MAX_VEC_COMPONENTS
; c
++) {
1184 if (!nir_alu_instr_channel_used(instr
, src
, c
))
1187 read_mask
|= (1 << instr
->src
[src
].swizzle
[c
]);
1193 * Get the number of channels used for a source
1195 static inline unsigned
1196 nir_ssa_alu_instr_src_components(const nir_alu_instr
*instr
, unsigned src
)
1198 if (nir_op_infos
[instr
->op
].input_sizes
[src
] > 0)
1199 return nir_op_infos
[instr
->op
].input_sizes
[src
];
1201 return nir_dest_num_components(instr
->dest
.dest
);
1205 nir_alu_instr_is_comparison(const nir_alu_instr
*instr
)
1207 switch (instr
->op
) {
1227 bool nir_const_value_negative_equal(nir_const_value c1
, nir_const_value c2
,
1228 nir_alu_type full_type
);
1230 bool nir_alu_srcs_equal(const nir_alu_instr
*alu1
, const nir_alu_instr
*alu2
,
1231 unsigned src1
, unsigned src2
);
1233 bool nir_alu_srcs_negative_equal(const nir_alu_instr
*alu1
,
1234 const nir_alu_instr
*alu2
,
1235 unsigned src1
, unsigned src2
);
1239 nir_deref_type_array
,
1240 nir_deref_type_array_wildcard
,
1241 nir_deref_type_ptr_as_array
,
1242 nir_deref_type_struct
,
1243 nir_deref_type_cast
,
1249 /** The type of this deref instruction */
1250 nir_deref_type deref_type
;
1252 /** The mode of the underlying variable */
1253 nir_variable_mode mode
;
1255 /** The dereferenced type of the resulting pointer value */
1256 const struct glsl_type
*type
;
1259 /** Variable being dereferenced if deref_type is a deref_var */
1262 /** Parent deref if deref_type is not deref_var */
1266 /** Additional deref parameters */
1277 unsigned ptr_stride
;
1281 /** Destination to store the resulting "pointer" */
1285 static inline nir_deref_instr
*nir_src_as_deref(nir_src src
);
1287 static inline nir_deref_instr
*
1288 nir_deref_instr_parent(const nir_deref_instr
*instr
)
1290 if (instr
->deref_type
== nir_deref_type_var
)
1293 return nir_src_as_deref(instr
->parent
);
1296 static inline nir_variable
*
1297 nir_deref_instr_get_variable(const nir_deref_instr
*instr
)
1299 while (instr
->deref_type
!= nir_deref_type_var
) {
1300 if (instr
->deref_type
== nir_deref_type_cast
)
1303 instr
= nir_deref_instr_parent(instr
);
1309 bool nir_deref_instr_has_indirect(nir_deref_instr
*instr
);
1310 bool nir_deref_instr_is_known_out_of_bounds(nir_deref_instr
*instr
);
1311 bool nir_deref_instr_has_complex_use(nir_deref_instr
*instr
);
1313 bool nir_deref_instr_remove_if_unused(nir_deref_instr
*instr
);
1315 unsigned nir_deref_instr_ptr_as_array_stride(nir_deref_instr
*instr
);
1320 struct nir_function
*callee
;
1322 unsigned num_params
;
1326 #include "nir_intrinsics.h"
1328 #define NIR_INTRINSIC_MAX_CONST_INDEX 4
1330 /** Represents an intrinsic
1332 * An intrinsic is an instruction type for handling things that are
1333 * more-or-less regular operations but don't just consume and produce SSA
1334 * values like ALU operations do. Intrinsics are not for things that have
1335 * special semantic meaning such as phi nodes and parallel copies.
1336 * Examples of intrinsics include variable load/store operations, system
1337 * value loads, and the like. Even though texturing more-or-less falls
1338 * under this category, texturing is its own instruction type because
1339 * trying to represent texturing with intrinsics would lead to a
1340 * combinatorial explosion of intrinsic opcodes.
1342 * By having a single instruction type for handling a lot of different
1343 * cases, optimization passes can look for intrinsics and, for the most
1344 * part, completely ignore them. Each intrinsic type also has a few
1345 * possible flags that govern whether or not they can be reordered or
1346 * eliminated. That way passes like dead code elimination can still work
1347 * on intrisics without understanding the meaning of each.
1349 * Each intrinsic has some number of constant indices, some number of
1350 * variables, and some number of sources. What these sources, variables,
1351 * and indices mean depends on the intrinsic and is documented with the
1352 * intrinsic declaration in nir_intrinsics.h. Intrinsics and texture
1353 * instructions are the only types of instruction that can operate on
1359 nir_intrinsic_op intrinsic
;
1363 /** number of components if this is a vectorized intrinsic
1365 * Similarly to ALU operations, some intrinsics are vectorized.
1366 * An intrinsic is vectorized if nir_intrinsic_infos.dest_components == 0.
1367 * For vectorized intrinsics, the num_components field specifies the
1368 * number of destination components and the number of source components
1369 * for all sources with nir_intrinsic_infos.src_components[i] == 0.
1371 uint8_t num_components
;
1373 int const_index
[NIR_INTRINSIC_MAX_CONST_INDEX
];
1376 } nir_intrinsic_instr
;
1378 static inline nir_variable
*
1379 nir_intrinsic_get_var(nir_intrinsic_instr
*intrin
, unsigned i
)
1381 return nir_deref_instr_get_variable(nir_src_as_deref(intrin
->src
[i
]));
1385 /* Memory ordering. */
1386 NIR_MEMORY_ACQUIRE
= 1 << 0,
1387 NIR_MEMORY_RELEASE
= 1 << 1,
1389 /* Memory visibility operations. */
1390 NIR_MEMORY_MAKE_AVAILABLE
= 1 << 3,
1391 NIR_MEMORY_MAKE_VISIBLE
= 1 << 4,
1392 } nir_memory_semantics
;
1396 NIR_SCOPE_QUEUE_FAMILY
,
1397 NIR_SCOPE_WORKGROUP
,
1399 NIR_SCOPE_INVOCATION
,
1403 * \name NIR intrinsics semantic flags
1405 * information about what the compiler can do with the intrinsics.
1407 * \sa nir_intrinsic_info::flags
1411 * whether the intrinsic can be safely eliminated if none of its output
1412 * value is not being used.
1414 NIR_INTRINSIC_CAN_ELIMINATE
= (1 << 0),
1417 * Whether the intrinsic can be reordered with respect to any other
1418 * intrinsic, i.e. whether the only reordering dependencies of the
1419 * intrinsic are due to the register reads/writes.
1421 NIR_INTRINSIC_CAN_REORDER
= (1 << 1),
1422 } nir_intrinsic_semantic_flag
;
1425 * \name NIR intrinsics const-index flag
1427 * Indicates the usage of a const_index slot.
1429 * \sa nir_intrinsic_info::index_map
1433 * Generally instructions that take a offset src argument, can encode
1434 * a constant 'base' value which is added to the offset.
1436 NIR_INTRINSIC_BASE
= 1,
1439 * For store instructions, a writemask for the store.
1441 NIR_INTRINSIC_WRMASK
,
1444 * The stream-id for GS emit_vertex/end_primitive intrinsics.
1446 NIR_INTRINSIC_STREAM_ID
,
1449 * The clip-plane id for load_user_clip_plane intrinsic.
1451 NIR_INTRINSIC_UCP_ID
,
1454 * The amount of data, starting from BASE, that this instruction may
1455 * access. This is used to provide bounds if the offset is not constant.
1457 NIR_INTRINSIC_RANGE
,
1460 * The Vulkan descriptor set for vulkan_resource_index intrinsic.
1462 NIR_INTRINSIC_DESC_SET
,
1465 * The Vulkan descriptor set binding for vulkan_resource_index intrinsic.
1467 NIR_INTRINSIC_BINDING
,
1472 NIR_INTRINSIC_COMPONENT
,
1475 * Interpolation mode (only meaningful for FS inputs).
1477 NIR_INTRINSIC_INTERP_MODE
,
1480 * A binary nir_op to use when performing a reduction or scan operation
1482 NIR_INTRINSIC_REDUCTION_OP
,
1485 * Cluster size for reduction operations
1487 NIR_INTRINSIC_CLUSTER_SIZE
,
1490 * Parameter index for a load_param intrinsic
1492 NIR_INTRINSIC_PARAM_IDX
,
1495 * Image dimensionality for image intrinsics
1497 * One of GLSL_SAMPLER_DIM_*
1499 NIR_INTRINSIC_IMAGE_DIM
,
1502 * Non-zero if we are accessing an array image
1504 NIR_INTRINSIC_IMAGE_ARRAY
,
1507 * Image format for image intrinsics
1509 NIR_INTRINSIC_FORMAT
,
1512 * Access qualifiers for image and memory access intrinsics
1514 NIR_INTRINSIC_ACCESS
,
1517 * Alignment for offsets and addresses
1519 * These two parameters, specify an alignment in terms of a multiplier and
1520 * an offset. The offset or address parameter X of the intrinsic is
1521 * guaranteed to satisfy the following:
1523 * (X - align_offset) % align_mul == 0
1525 NIR_INTRINSIC_ALIGN_MUL
,
1526 NIR_INTRINSIC_ALIGN_OFFSET
,
1529 * The Vulkan descriptor type for a vulkan_resource_[re]index intrinsic.
1531 NIR_INTRINSIC_DESC_TYPE
,
1534 * The nir_alu_type of a uniform/input/output
1539 * The swizzle mask for the instructions
1540 * SwizzleInvocationsAMD and SwizzleInvocationsMaskedAMD
1542 NIR_INTRINSIC_SWIZZLE_MASK
,
1544 /* Separate source/dest access flags for copies */
1545 NIR_INTRINSIC_SRC_ACCESS
,
1546 NIR_INTRINSIC_DST_ACCESS
,
1548 /* Driver location for nir_load_patch_location_ir3 */
1549 NIR_INTRINSIC_DRIVER_LOCATION
,
1552 * Mask of nir_memory_semantics, includes ordering and visibility.
1554 NIR_INTRINSIC_MEMORY_SEMANTICS
,
1557 * Mask of nir_variable_modes affected by the memory operation.
1559 NIR_INTRINSIC_MEMORY_MODES
,
1562 * Value of nir_scope.
1564 NIR_INTRINSIC_MEMORY_SCOPE
,
1566 NIR_INTRINSIC_NUM_INDEX_FLAGS
,
1568 } nir_intrinsic_index_flag
;
1570 #define NIR_INTRINSIC_MAX_INPUTS 5
1575 unsigned num_srcs
; /** < number of register/SSA inputs */
1577 /** number of components of each input register
1579 * If this value is 0, the number of components is given by the
1580 * num_components field of nir_intrinsic_instr. If this value is -1, the
1581 * intrinsic consumes however many components are provided and it is not
1584 int src_components
[NIR_INTRINSIC_MAX_INPUTS
];
1588 /** number of components of the output register
1590 * If this value is 0, the number of components is given by the
1591 * num_components field of nir_intrinsic_instr.
1593 unsigned dest_components
;
1595 /** bitfield of legal bit sizes */
1596 unsigned dest_bit_sizes
;
1598 /** the number of constant indices used by the intrinsic */
1599 unsigned num_indices
;
1601 /** indicates the usage of intr->const_index[n] */
1602 unsigned index_map
[NIR_INTRINSIC_NUM_INDEX_FLAGS
];
1604 /** semantic flags for calls to this intrinsic */
1605 nir_intrinsic_semantic_flag flags
;
1606 } nir_intrinsic_info
;
1608 extern const nir_intrinsic_info nir_intrinsic_infos
[nir_num_intrinsics
];
1610 static inline unsigned
1611 nir_intrinsic_src_components(nir_intrinsic_instr
*intr
, unsigned srcn
)
1613 const nir_intrinsic_info
*info
= &nir_intrinsic_infos
[intr
->intrinsic
];
1614 assert(srcn
< info
->num_srcs
);
1615 if (info
->src_components
[srcn
] > 0)
1616 return info
->src_components
[srcn
];
1617 else if (info
->src_components
[srcn
] == 0)
1618 return intr
->num_components
;
1620 return nir_src_num_components(intr
->src
[srcn
]);
1623 static inline unsigned
1624 nir_intrinsic_dest_components(nir_intrinsic_instr
*intr
)
1626 const nir_intrinsic_info
*info
= &nir_intrinsic_infos
[intr
->intrinsic
];
1627 if (!info
->has_dest
)
1629 else if (info
->dest_components
)
1630 return info
->dest_components
;
1632 return intr
->num_components
;
1635 #define INTRINSIC_IDX_ACCESSORS(name, flag, type) \
1636 static inline type \
1637 nir_intrinsic_##name(const nir_intrinsic_instr *instr) \
1639 const nir_intrinsic_info *info = &nir_intrinsic_infos[instr->intrinsic]; \
1640 assert(info->index_map[NIR_INTRINSIC_##flag] > 0); \
1641 return (type)instr->const_index[info->index_map[NIR_INTRINSIC_##flag] - 1]; \
1643 static inline void \
1644 nir_intrinsic_set_##name(nir_intrinsic_instr *instr, type val) \
1646 const nir_intrinsic_info *info = &nir_intrinsic_infos[instr->intrinsic]; \
1647 assert(info->index_map[NIR_INTRINSIC_##flag] > 0); \
1648 instr->const_index[info->index_map[NIR_INTRINSIC_##flag] - 1] = val; \
1651 INTRINSIC_IDX_ACCESSORS(write_mask
, WRMASK
, unsigned)
1652 INTRINSIC_IDX_ACCESSORS(base
, BASE
, int)
1653 INTRINSIC_IDX_ACCESSORS(stream_id
, STREAM_ID
, unsigned)
1654 INTRINSIC_IDX_ACCESSORS(ucp_id
, UCP_ID
, unsigned)
1655 INTRINSIC_IDX_ACCESSORS(range
, RANGE
, unsigned)
1656 INTRINSIC_IDX_ACCESSORS(desc_set
, DESC_SET
, unsigned)
1657 INTRINSIC_IDX_ACCESSORS(binding
, BINDING
, unsigned)
1658 INTRINSIC_IDX_ACCESSORS(component
, COMPONENT
, unsigned)
1659 INTRINSIC_IDX_ACCESSORS(interp_mode
, INTERP_MODE
, unsigned)
1660 INTRINSIC_IDX_ACCESSORS(reduction_op
, REDUCTION_OP
, unsigned)
1661 INTRINSIC_IDX_ACCESSORS(cluster_size
, CLUSTER_SIZE
, unsigned)
1662 INTRINSIC_IDX_ACCESSORS(param_idx
, PARAM_IDX
, unsigned)
1663 INTRINSIC_IDX_ACCESSORS(image_dim
, IMAGE_DIM
, enum glsl_sampler_dim
)
1664 INTRINSIC_IDX_ACCESSORS(image_array
, IMAGE_ARRAY
, bool)
1665 INTRINSIC_IDX_ACCESSORS(access
, ACCESS
, enum gl_access_qualifier
)
1666 INTRINSIC_IDX_ACCESSORS(src_access
, SRC_ACCESS
, enum gl_access_qualifier
)
1667 INTRINSIC_IDX_ACCESSORS(dst_access
, DST_ACCESS
, enum gl_access_qualifier
)
1668 INTRINSIC_IDX_ACCESSORS(format
, FORMAT
, unsigned)
1669 INTRINSIC_IDX_ACCESSORS(align_mul
, ALIGN_MUL
, unsigned)
1670 INTRINSIC_IDX_ACCESSORS(align_offset
, ALIGN_OFFSET
, unsigned)
1671 INTRINSIC_IDX_ACCESSORS(desc_type
, DESC_TYPE
, unsigned)
1672 INTRINSIC_IDX_ACCESSORS(type
, TYPE
, nir_alu_type
)
1673 INTRINSIC_IDX_ACCESSORS(swizzle_mask
, SWIZZLE_MASK
, unsigned)
1674 INTRINSIC_IDX_ACCESSORS(driver_location
, DRIVER_LOCATION
, unsigned)
1675 INTRINSIC_IDX_ACCESSORS(memory_semantics
, MEMORY_SEMANTICS
, nir_memory_semantics
)
1676 INTRINSIC_IDX_ACCESSORS(memory_modes
, MEMORY_MODES
, nir_variable_mode
)
1677 INTRINSIC_IDX_ACCESSORS(memory_scope
, MEMORY_SCOPE
, nir_scope
)
1680 nir_intrinsic_set_align(nir_intrinsic_instr
*intrin
,
1681 unsigned align_mul
, unsigned align_offset
)
1683 assert(util_is_power_of_two_nonzero(align_mul
));
1684 assert(align_offset
< align_mul
);
1685 nir_intrinsic_set_align_mul(intrin
, align_mul
);
1686 nir_intrinsic_set_align_offset(intrin
, align_offset
);
1689 /** Returns a simple alignment for a load/store intrinsic offset
1691 * Instead of the full mul+offset alignment scheme provided by the ALIGN_MUL
1692 * and ALIGN_OFFSET parameters, this helper takes both into account and
1693 * provides a single simple alignment parameter. The offset X is guaranteed
1694 * to satisfy X % align == 0.
1696 static inline unsigned
1697 nir_intrinsic_align(const nir_intrinsic_instr
*intrin
)
1699 const unsigned align_mul
= nir_intrinsic_align_mul(intrin
);
1700 const unsigned align_offset
= nir_intrinsic_align_offset(intrin
);
1701 assert(align_offset
< align_mul
);
1702 return align_offset
? 1 << (ffs(align_offset
) - 1) : align_mul
;
1705 /* Converts a image_deref_* intrinsic into a image_* one */
1706 void nir_rewrite_image_intrinsic(nir_intrinsic_instr
*instr
,
1707 nir_ssa_def
*handle
, bool bindless
);
1709 /* Determine if an intrinsic can be arbitrarily reordered and eliminated. */
1711 nir_intrinsic_can_reorder(nir_intrinsic_instr
*instr
)
1713 if (instr
->intrinsic
== nir_intrinsic_load_deref
||
1714 instr
->intrinsic
== nir_intrinsic_load_ssbo
||
1715 instr
->intrinsic
== nir_intrinsic_bindless_image_load
||
1716 instr
->intrinsic
== nir_intrinsic_image_deref_load
||
1717 instr
->intrinsic
== nir_intrinsic_image_load
) {
1718 return nir_intrinsic_access(instr
) & ACCESS_CAN_REORDER
;
1720 const nir_intrinsic_info
*info
=
1721 &nir_intrinsic_infos
[instr
->intrinsic
];
1722 return (info
->flags
& NIR_INTRINSIC_CAN_ELIMINATE
) &&
1723 (info
->flags
& NIR_INTRINSIC_CAN_REORDER
);
1728 * \group texture information
1730 * This gives semantic information about textures which is useful to the
1731 * frontend, the backend, and lowering passes, but not the optimizer.
1736 nir_tex_src_projector
,
1737 nir_tex_src_comparator
, /* shadow comparator */
1741 nir_tex_src_min_lod
,
1742 nir_tex_src_ms_index
, /* MSAA sample index */
1743 nir_tex_src_ms_mcs
, /* MSAA compression value */
1746 nir_tex_src_texture_deref
, /* < deref pointing to the texture */
1747 nir_tex_src_sampler_deref
, /* < deref pointing to the sampler */
1748 nir_tex_src_texture_offset
, /* < dynamically uniform indirect offset */
1749 nir_tex_src_sampler_offset
, /* < dynamically uniform indirect offset */
1750 nir_tex_src_texture_handle
, /* < bindless texture handle */
1751 nir_tex_src_sampler_handle
, /* < bindless sampler handle */
1752 nir_tex_src_plane
, /* < selects plane for planar textures */
1753 nir_num_tex_src_types
1758 nir_tex_src_type src_type
;
1762 nir_texop_tex
, /**< Regular texture look-up */
1763 nir_texop_txb
, /**< Texture look-up with LOD bias */
1764 nir_texop_txl
, /**< Texture look-up with explicit LOD */
1765 nir_texop_txd
, /**< Texture look-up with partial derivatives */
1766 nir_texop_txf
, /**< Texel fetch with explicit LOD */
1767 nir_texop_txf_ms
, /**< Multisample texture fetch */
1768 nir_texop_txf_ms_fb
, /**< Multisample texture fetch from framebuffer */
1769 nir_texop_txf_ms_mcs
, /**< Multisample compression value fetch */
1770 nir_texop_txs
, /**< Texture size */
1771 nir_texop_lod
, /**< Texture lod query */
1772 nir_texop_tg4
, /**< Texture gather */
1773 nir_texop_query_levels
, /**< Texture levels query */
1774 nir_texop_texture_samples
, /**< Texture samples query */
1775 nir_texop_samples_identical
, /**< Query whether all samples are definitely
1778 nir_texop_tex_prefetch
, /**< Regular texture look-up, eligible for pre-dispatch */
1784 enum glsl_sampler_dim sampler_dim
;
1785 nir_alu_type dest_type
;
1790 unsigned num_srcs
, coord_components
;
1791 bool is_array
, is_shadow
;
1794 * If is_shadow is true, whether this is the old-style shadow that outputs 4
1795 * components or the new-style shadow that outputs 1 component.
1797 bool is_new_style_shadow
;
1799 /* gather component selector */
1800 unsigned component
: 2;
1802 /* gather offsets */
1803 int8_t tg4_offsets
[4][2];
1805 /* True if the texture index or handle is not dynamically uniform */
1806 bool texture_non_uniform
;
1808 /* True if the sampler index or handle is not dynamically uniform */
1809 bool sampler_non_uniform
;
1811 /** The texture index
1813 * If this texture instruction has a nir_tex_src_texture_offset source,
1814 * then the texture index is given by texture_index + texture_offset.
1816 unsigned texture_index
;
1818 /** The size of the texture array or 0 if it's not an array */
1819 unsigned texture_array_size
;
1821 /** The sampler index
1823 * The following operations do not require a sampler and, as such, this
1824 * field should be ignored:
1826 * - nir_texop_txf_ms
1829 * - nir_texop_query_levels
1830 * - nir_texop_texture_samples
1831 * - nir_texop_samples_identical
1833 * If this texture instruction has a nir_tex_src_sampler_offset source,
1834 * then the sampler index is given by sampler_index + sampler_offset.
1836 unsigned sampler_index
;
1839 static inline unsigned
1840 nir_tex_instr_dest_size(const nir_tex_instr
*instr
)
1842 switch (instr
->op
) {
1843 case nir_texop_txs
: {
1845 switch (instr
->sampler_dim
) {
1846 case GLSL_SAMPLER_DIM_1D
:
1847 case GLSL_SAMPLER_DIM_BUF
:
1850 case GLSL_SAMPLER_DIM_2D
:
1851 case GLSL_SAMPLER_DIM_CUBE
:
1852 case GLSL_SAMPLER_DIM_MS
:
1853 case GLSL_SAMPLER_DIM_RECT
:
1854 case GLSL_SAMPLER_DIM_EXTERNAL
:
1855 case GLSL_SAMPLER_DIM_SUBPASS
:
1858 case GLSL_SAMPLER_DIM_3D
:
1862 unreachable("not reached");
1864 if (instr
->is_array
)
1872 case nir_texop_texture_samples
:
1873 case nir_texop_query_levels
:
1874 case nir_texop_samples_identical
:
1878 if (instr
->is_shadow
&& instr
->is_new_style_shadow
)
1885 /* Returns true if this texture operation queries something about the texture
1886 * rather than actually sampling it.
1889 nir_tex_instr_is_query(const nir_tex_instr
*instr
)
1891 switch (instr
->op
) {
1894 case nir_texop_texture_samples
:
1895 case nir_texop_query_levels
:
1896 case nir_texop_txf_ms_mcs
:
1903 case nir_texop_txf_ms
:
1904 case nir_texop_txf_ms_fb
:
1908 unreachable("Invalid texture opcode");
1913 nir_tex_instr_has_implicit_derivative(const nir_tex_instr
*instr
)
1915 switch (instr
->op
) {
1925 static inline nir_alu_type
1926 nir_tex_instr_src_type(const nir_tex_instr
*instr
, unsigned src
)
1928 switch (instr
->src
[src
].src_type
) {
1929 case nir_tex_src_coord
:
1930 switch (instr
->op
) {
1932 case nir_texop_txf_ms
:
1933 case nir_texop_txf_ms_fb
:
1934 case nir_texop_txf_ms_mcs
:
1935 case nir_texop_samples_identical
:
1936 return nir_type_int
;
1939 return nir_type_float
;
1942 case nir_tex_src_lod
:
1943 switch (instr
->op
) {
1946 return nir_type_int
;
1949 return nir_type_float
;
1952 case nir_tex_src_projector
:
1953 case nir_tex_src_comparator
:
1954 case nir_tex_src_bias
:
1955 case nir_tex_src_min_lod
:
1956 case nir_tex_src_ddx
:
1957 case nir_tex_src_ddy
:
1958 return nir_type_float
;
1960 case nir_tex_src_offset
:
1961 case nir_tex_src_ms_index
:
1962 case nir_tex_src_plane
:
1963 return nir_type_int
;
1965 case nir_tex_src_ms_mcs
:
1966 case nir_tex_src_texture_deref
:
1967 case nir_tex_src_sampler_deref
:
1968 case nir_tex_src_texture_offset
:
1969 case nir_tex_src_sampler_offset
:
1970 case nir_tex_src_texture_handle
:
1971 case nir_tex_src_sampler_handle
:
1972 return nir_type_uint
;
1974 case nir_num_tex_src_types
:
1975 unreachable("nir_num_tex_src_types is not a valid source type");
1978 unreachable("Invalid texture source type");
1981 static inline unsigned
1982 nir_tex_instr_src_size(const nir_tex_instr
*instr
, unsigned src
)
1984 if (instr
->src
[src
].src_type
== nir_tex_src_coord
)
1985 return instr
->coord_components
;
1987 /* The MCS value is expected to be a vec4 returned by a txf_ms_mcs */
1988 if (instr
->src
[src
].src_type
== nir_tex_src_ms_mcs
)
1991 if (instr
->src
[src
].src_type
== nir_tex_src_ddx
||
1992 instr
->src
[src
].src_type
== nir_tex_src_ddy
) {
1993 if (instr
->is_array
)
1994 return instr
->coord_components
- 1;
1996 return instr
->coord_components
;
1999 /* Usual APIs don't allow cube + offset, but we allow it, with 2 coords for
2000 * the offset, since a cube maps to a single face.
2002 if (instr
->src
[src
].src_type
== nir_tex_src_offset
) {
2003 if (instr
->sampler_dim
== GLSL_SAMPLER_DIM_CUBE
)
2005 else if (instr
->is_array
)
2006 return instr
->coord_components
- 1;
2008 return instr
->coord_components
;
2015 nir_tex_instr_src_index(const nir_tex_instr
*instr
, nir_tex_src_type type
)
2017 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++)
2018 if (instr
->src
[i
].src_type
== type
)
2024 void nir_tex_instr_add_src(nir_tex_instr
*tex
,
2025 nir_tex_src_type src_type
,
2028 void nir_tex_instr_remove_src(nir_tex_instr
*tex
, unsigned src_idx
);
2030 bool nir_tex_instr_has_explicit_tg4_offsets(nir_tex_instr
*tex
);
2037 nir_const_value value
[];
2038 } nir_load_const_instr
;
2051 /* creates a new SSA variable in an undefined state */
2056 } nir_ssa_undef_instr
;
2059 struct exec_node node
;
2061 /* The predecessor block corresponding to this source */
2062 struct nir_block
*pred
;
2067 #define nir_foreach_phi_src(phi_src, phi) \
2068 foreach_list_typed(nir_phi_src, phi_src, node, &(phi)->srcs)
2069 #define nir_foreach_phi_src_safe(phi_src, phi) \
2070 foreach_list_typed_safe(nir_phi_src, phi_src, node, &(phi)->srcs)
2075 struct exec_list srcs
; /** < list of nir_phi_src */
2081 struct exec_node node
;
2084 } nir_parallel_copy_entry
;
2086 #define nir_foreach_parallel_copy_entry(entry, pcopy) \
2087 foreach_list_typed(nir_parallel_copy_entry, entry, node, &(pcopy)->entries)
2092 /* A list of nir_parallel_copy_entrys. The sources of all of the
2093 * entries are copied to the corresponding destinations "in parallel".
2094 * In other words, if we have two entries: a -> b and b -> a, the values
2097 struct exec_list entries
;
2098 } nir_parallel_copy_instr
;
2100 NIR_DEFINE_CAST(nir_instr_as_alu
, nir_instr
, nir_alu_instr
, instr
,
2101 type
, nir_instr_type_alu
)
2102 NIR_DEFINE_CAST(nir_instr_as_deref
, nir_instr
, nir_deref_instr
, instr
,
2103 type
, nir_instr_type_deref
)
2104 NIR_DEFINE_CAST(nir_instr_as_call
, nir_instr
, nir_call_instr
, instr
,
2105 type
, nir_instr_type_call
)
2106 NIR_DEFINE_CAST(nir_instr_as_jump
, nir_instr
, nir_jump_instr
, instr
,
2107 type
, nir_instr_type_jump
)
2108 NIR_DEFINE_CAST(nir_instr_as_tex
, nir_instr
, nir_tex_instr
, instr
,
2109 type
, nir_instr_type_tex
)
2110 NIR_DEFINE_CAST(nir_instr_as_intrinsic
, nir_instr
, nir_intrinsic_instr
, instr
,
2111 type
, nir_instr_type_intrinsic
)
2112 NIR_DEFINE_CAST(nir_instr_as_load_const
, nir_instr
, nir_load_const_instr
, instr
,
2113 type
, nir_instr_type_load_const
)
2114 NIR_DEFINE_CAST(nir_instr_as_ssa_undef
, nir_instr
, nir_ssa_undef_instr
, instr
,
2115 type
, nir_instr_type_ssa_undef
)
2116 NIR_DEFINE_CAST(nir_instr_as_phi
, nir_instr
, nir_phi_instr
, instr
,
2117 type
, nir_instr_type_phi
)
2118 NIR_DEFINE_CAST(nir_instr_as_parallel_copy
, nir_instr
,
2119 nir_parallel_copy_instr
, instr
,
2120 type
, nir_instr_type_parallel_copy
)
2123 #define NIR_DEFINE_SRC_AS_CONST(type, suffix) \
2124 static inline type \
2125 nir_src_comp_as_##suffix(nir_src src, unsigned comp) \
2127 assert(nir_src_is_const(src)); \
2128 nir_load_const_instr *load = \
2129 nir_instr_as_load_const(src.ssa->parent_instr); \
2130 assert(comp < load->def.num_components); \
2131 return nir_const_value_as_##suffix(load->value[comp], \
2132 load->def.bit_size); \
2135 static inline type \
2136 nir_src_as_##suffix(nir_src src) \
2138 assert(nir_src_num_components(src) == 1); \
2139 return nir_src_comp_as_##suffix(src, 0); \
2142 NIR_DEFINE_SRC_AS_CONST(int64_t, int)
2143 NIR_DEFINE_SRC_AS_CONST(uint64_t, uint
)
2144 NIR_DEFINE_SRC_AS_CONST(bool, bool)
2145 NIR_DEFINE_SRC_AS_CONST(double, float)
2147 #undef NIR_DEFINE_SRC_AS_CONST
2156 nir_ssa_scalar_is_const(nir_ssa_scalar s
)
2158 return s
.def
->parent_instr
->type
== nir_instr_type_load_const
;
2161 static inline nir_const_value
2162 nir_ssa_scalar_as_const_value(nir_ssa_scalar s
)
2164 assert(s
.comp
< s
.def
->num_components
);
2165 nir_load_const_instr
*load
= nir_instr_as_load_const(s
.def
->parent_instr
);
2166 return load
->value
[s
.comp
];
2169 #define NIR_DEFINE_SCALAR_AS_CONST(type, suffix) \
2170 static inline type \
2171 nir_ssa_scalar_as_##suffix(nir_ssa_scalar s) \
2173 return nir_const_value_as_##suffix( \
2174 nir_ssa_scalar_as_const_value(s), s.def->bit_size); \
2177 NIR_DEFINE_SCALAR_AS_CONST(int64_t, int)
2178 NIR_DEFINE_SCALAR_AS_CONST(uint64_t, uint
)
2179 NIR_DEFINE_SCALAR_AS_CONST(bool, bool)
2180 NIR_DEFINE_SCALAR_AS_CONST(double, float)
2182 #undef NIR_DEFINE_SCALAR_AS_CONST
2185 nir_ssa_scalar_is_alu(nir_ssa_scalar s
)
2187 return s
.def
->parent_instr
->type
== nir_instr_type_alu
;
2190 static inline nir_op
2191 nir_ssa_scalar_alu_op(nir_ssa_scalar s
)
2193 return nir_instr_as_alu(s
.def
->parent_instr
)->op
;
2196 static inline nir_ssa_scalar
2197 nir_ssa_scalar_chase_alu_src(nir_ssa_scalar s
, unsigned alu_src_idx
)
2199 nir_ssa_scalar out
= { NULL
, 0 };
2201 nir_alu_instr
*alu
= nir_instr_as_alu(s
.def
->parent_instr
);
2202 assert(alu_src_idx
< nir_op_infos
[alu
->op
].num_inputs
);
2204 /* Our component must be written */
2205 assert(s
.comp
< s
.def
->num_components
);
2206 assert(alu
->dest
.write_mask
& (1u << s
.comp
));
2208 assert(alu
->src
[alu_src_idx
].src
.is_ssa
);
2209 out
.def
= alu
->src
[alu_src_idx
].src
.ssa
;
2211 if (nir_op_infos
[alu
->op
].input_sizes
[alu_src_idx
] == 0) {
2212 /* The ALU src is unsized so the source component follows the
2213 * destination component.
2215 out
.comp
= alu
->src
[alu_src_idx
].swizzle
[s
.comp
];
2217 /* This is a sized source so all source components work together to
2218 * produce all the destination components. Since we need to return a
2219 * scalar, this only works if the source is a scalar.
2221 assert(nir_op_infos
[alu
->op
].input_sizes
[alu_src_idx
] == 1);
2222 out
.comp
= alu
->src
[alu_src_idx
].swizzle
[0];
2224 assert(out
.comp
< out
.def
->num_components
);
2233 * Control flow consists of a tree of control flow nodes, which include
2234 * if-statements and loops. The leaves of the tree are basic blocks, lists of
2235 * instructions that always run start-to-finish. Each basic block also keeps
2236 * track of its successors (blocks which may run immediately after the current
2237 * block) and predecessors (blocks which could have run immediately before the
2238 * current block). Each function also has a start block and an end block which
2239 * all return statements point to (which is always empty). Together, all the
2240 * blocks with their predecessors and successors make up the control flow
2241 * graph (CFG) of the function. There are helpers that modify the tree of
2242 * control flow nodes while modifying the CFG appropriately; these should be
2243 * used instead of modifying the tree directly.
2250 nir_cf_node_function
2253 typedef struct nir_cf_node
{
2254 struct exec_node node
;
2255 nir_cf_node_type type
;
2256 struct nir_cf_node
*parent
;
2259 typedef struct nir_block
{
2260 nir_cf_node cf_node
;
2262 struct exec_list instr_list
; /** < list of nir_instr */
2264 /** generic block index; generated by nir_index_blocks */
2268 * Each block can only have up to 2 successors, so we put them in a simple
2269 * array - no need for anything more complicated.
2271 struct nir_block
*successors
[2];
2273 /* Set of nir_block predecessors in the CFG */
2274 struct set
*predecessors
;
2277 * this node's immediate dominator in the dominance tree - set to NULL for
2280 struct nir_block
*imm_dom
;
2282 /* This node's children in the dominance tree */
2283 unsigned num_dom_children
;
2284 struct nir_block
**dom_children
;
2286 /* Set of nir_blocks on the dominance frontier of this block */
2287 struct set
*dom_frontier
;
2290 * These two indices have the property that dom_{pre,post}_index for each
2291 * child of this block in the dominance tree will always be between
2292 * dom_pre_index and dom_post_index for this block, which makes testing if
2293 * a given block is dominated by another block an O(1) operation.
2295 unsigned dom_pre_index
, dom_post_index
;
2297 /* live in and out for this block; used for liveness analysis */
2298 BITSET_WORD
*live_in
;
2299 BITSET_WORD
*live_out
;
2302 static inline nir_instr
*
2303 nir_block_first_instr(nir_block
*block
)
2305 struct exec_node
*head
= exec_list_get_head(&block
->instr_list
);
2306 return exec_node_data(nir_instr
, head
, node
);
2309 static inline nir_instr
*
2310 nir_block_last_instr(nir_block
*block
)
2312 struct exec_node
*tail
= exec_list_get_tail(&block
->instr_list
);
2313 return exec_node_data(nir_instr
, tail
, node
);
2317 nir_block_ends_in_jump(nir_block
*block
)
2319 return !exec_list_is_empty(&block
->instr_list
) &&
2320 nir_block_last_instr(block
)->type
== nir_instr_type_jump
;
2323 #define nir_foreach_instr(instr, block) \
2324 foreach_list_typed(nir_instr, instr, node, &(block)->instr_list)
2325 #define nir_foreach_instr_reverse(instr, block) \
2326 foreach_list_typed_reverse(nir_instr, instr, node, &(block)->instr_list)
2327 #define nir_foreach_instr_safe(instr, block) \
2328 foreach_list_typed_safe(nir_instr, instr, node, &(block)->instr_list)
2329 #define nir_foreach_instr_reverse_safe(instr, block) \
2330 foreach_list_typed_reverse_safe(nir_instr, instr, node, &(block)->instr_list)
2333 nir_selection_control_none
= 0x0,
2334 nir_selection_control_flatten
= 0x1,
2335 nir_selection_control_dont_flatten
= 0x2,
2336 } nir_selection_control
;
2338 typedef struct nir_if
{
2339 nir_cf_node cf_node
;
2341 nir_selection_control control
;
2343 struct exec_list then_list
; /** < list of nir_cf_node */
2344 struct exec_list else_list
; /** < list of nir_cf_node */
2350 /** Instruction that generates nif::condition. */
2351 nir_instr
*conditional_instr
;
2353 /** Block within ::nif that has the break instruction. */
2354 nir_block
*break_block
;
2356 /** Last block for the then- or else-path that does not contain the break. */
2357 nir_block
*continue_from_block
;
2359 /** True when ::break_block is in the else-path of ::nif. */
2360 bool continue_from_then
;
2363 /* This is true if the terminators exact trip count is unknown. For
2366 * for (int i = 0; i < imin(x, 4); i++)
2369 * Here loop analysis would have set a max_trip_count of 4 however we dont
2370 * know for sure that this is the exact trip count.
2372 bool exact_trip_count_unknown
;
2374 struct list_head loop_terminator_link
;
2375 } nir_loop_terminator
;
2378 /* Estimated cost (in number of instructions) of the loop */
2379 unsigned instr_cost
;
2381 /* Guessed trip count based on array indexing */
2382 unsigned guessed_trip_count
;
2384 /* Maximum number of times the loop is run (if known) */
2385 unsigned max_trip_count
;
2387 /* Do we know the exact number of times the loop will be run */
2388 bool exact_trip_count_known
;
2390 /* Unroll the loop regardless of its size */
2393 /* Does the loop contain complex loop terminators, continues or other
2394 * complex behaviours? If this is true we can't rely on
2395 * loop_terminator_list to be complete or accurate.
2399 nir_loop_terminator
*limiting_terminator
;
2401 /* A list of loop_terminators terminating this loop. */
2402 struct list_head loop_terminator_list
;
2406 nir_loop_control_none
= 0x0,
2407 nir_loop_control_unroll
= 0x1,
2408 nir_loop_control_dont_unroll
= 0x2,
2412 nir_cf_node cf_node
;
2414 struct exec_list body
; /** < list of nir_cf_node */
2416 nir_loop_info
*info
;
2417 nir_loop_control control
;
2418 bool partially_unrolled
;
2422 * Various bits of metadata that can may be created or required by
2423 * optimization and analysis passes
2426 nir_metadata_none
= 0x0,
2427 nir_metadata_block_index
= 0x1,
2428 nir_metadata_dominance
= 0x2,
2429 nir_metadata_live_ssa_defs
= 0x4,
2430 nir_metadata_not_properly_reset
= 0x8,
2431 nir_metadata_loop_analysis
= 0x10,
2435 nir_cf_node cf_node
;
2437 /** pointer to the function of which this is an implementation */
2438 struct nir_function
*function
;
2440 struct exec_list body
; /** < list of nir_cf_node */
2442 nir_block
*end_block
;
2444 /** list for all local variables in the function */
2445 struct exec_list locals
;
2447 /** list of local registers in the function */
2448 struct exec_list registers
;
2450 /** next available local register index */
2453 /** next available SSA value index */
2456 /* total number of basic blocks, only valid when block_index_dirty = false */
2457 unsigned num_blocks
;
2459 nir_metadata valid_metadata
;
2460 } nir_function_impl
;
2462 ATTRIBUTE_RETURNS_NONNULL
static inline nir_block
*
2463 nir_start_block(nir_function_impl
*impl
)
2465 return (nir_block
*) impl
->body
.head_sentinel
.next
;
2468 ATTRIBUTE_RETURNS_NONNULL
static inline nir_block
*
2469 nir_impl_last_block(nir_function_impl
*impl
)
2471 return (nir_block
*) impl
->body
.tail_sentinel
.prev
;
2474 static inline nir_cf_node
*
2475 nir_cf_node_next(nir_cf_node
*node
)
2477 struct exec_node
*next
= exec_node_get_next(&node
->node
);
2478 if (exec_node_is_tail_sentinel(next
))
2481 return exec_node_data(nir_cf_node
, next
, node
);
2484 static inline nir_cf_node
*
2485 nir_cf_node_prev(nir_cf_node
*node
)
2487 struct exec_node
*prev
= exec_node_get_prev(&node
->node
);
2488 if (exec_node_is_head_sentinel(prev
))
2491 return exec_node_data(nir_cf_node
, prev
, node
);
2495 nir_cf_node_is_first(const nir_cf_node
*node
)
2497 return exec_node_is_head_sentinel(node
->node
.prev
);
2501 nir_cf_node_is_last(const nir_cf_node
*node
)
2503 return exec_node_is_tail_sentinel(node
->node
.next
);
2506 NIR_DEFINE_CAST(nir_cf_node_as_block
, nir_cf_node
, nir_block
, cf_node
,
2507 type
, nir_cf_node_block
)
2508 NIR_DEFINE_CAST(nir_cf_node_as_if
, nir_cf_node
, nir_if
, cf_node
,
2509 type
, nir_cf_node_if
)
2510 NIR_DEFINE_CAST(nir_cf_node_as_loop
, nir_cf_node
, nir_loop
, cf_node
,
2511 type
, nir_cf_node_loop
)
2512 NIR_DEFINE_CAST(nir_cf_node_as_function
, nir_cf_node
,
2513 nir_function_impl
, cf_node
, type
, nir_cf_node_function
)
2515 static inline nir_block
*
2516 nir_if_first_then_block(nir_if
*if_stmt
)
2518 struct exec_node
*head
= exec_list_get_head(&if_stmt
->then_list
);
2519 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, head
, node
));
2522 static inline nir_block
*
2523 nir_if_last_then_block(nir_if
*if_stmt
)
2525 struct exec_node
*tail
= exec_list_get_tail(&if_stmt
->then_list
);
2526 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, tail
, node
));
2529 static inline nir_block
*
2530 nir_if_first_else_block(nir_if
*if_stmt
)
2532 struct exec_node
*head
= exec_list_get_head(&if_stmt
->else_list
);
2533 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, head
, node
));
2536 static inline nir_block
*
2537 nir_if_last_else_block(nir_if
*if_stmt
)
2539 struct exec_node
*tail
= exec_list_get_tail(&if_stmt
->else_list
);
2540 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, tail
, node
));
2543 static inline nir_block
*
2544 nir_loop_first_block(nir_loop
*loop
)
2546 struct exec_node
*head
= exec_list_get_head(&loop
->body
);
2547 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, head
, node
));
2550 static inline nir_block
*
2551 nir_loop_last_block(nir_loop
*loop
)
2553 struct exec_node
*tail
= exec_list_get_tail(&loop
->body
);
2554 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, tail
, node
));
2558 * Return true if this list of cf_nodes contains a single empty block.
2561 nir_cf_list_is_empty_block(struct exec_list
*cf_list
)
2563 if (exec_list_is_singular(cf_list
)) {
2564 struct exec_node
*head
= exec_list_get_head(cf_list
);
2566 nir_cf_node_as_block(exec_node_data(nir_cf_node
, head
, node
));
2567 return exec_list_is_empty(&block
->instr_list
);
2573 uint8_t num_components
;
2577 typedef struct nir_function
{
2578 struct exec_node node
;
2581 struct nir_shader
*shader
;
2583 unsigned num_params
;
2584 nir_parameter
*params
;
2586 /** The implementation of this function.
2588 * If the function is only declared and not implemented, this is NULL.
2590 nir_function_impl
*impl
;
2596 nir_lower_imul64
= (1 << 0),
2597 nir_lower_isign64
= (1 << 1),
2598 /** Lower all int64 modulus and division opcodes */
2599 nir_lower_divmod64
= (1 << 2),
2600 /** Lower all 64-bit umul_high and imul_high opcodes */
2601 nir_lower_imul_high64
= (1 << 3),
2602 nir_lower_mov64
= (1 << 4),
2603 nir_lower_icmp64
= (1 << 5),
2604 nir_lower_iadd64
= (1 << 6),
2605 nir_lower_iabs64
= (1 << 7),
2606 nir_lower_ineg64
= (1 << 8),
2607 nir_lower_logic64
= (1 << 9),
2608 nir_lower_minmax64
= (1 << 10),
2609 nir_lower_shift64
= (1 << 11),
2610 nir_lower_imul_2x32_64
= (1 << 12),
2611 nir_lower_extract64
= (1 << 13),
2612 } nir_lower_int64_options
;
2615 nir_lower_drcp
= (1 << 0),
2616 nir_lower_dsqrt
= (1 << 1),
2617 nir_lower_drsq
= (1 << 2),
2618 nir_lower_dtrunc
= (1 << 3),
2619 nir_lower_dfloor
= (1 << 4),
2620 nir_lower_dceil
= (1 << 5),
2621 nir_lower_dfract
= (1 << 6),
2622 nir_lower_dround_even
= (1 << 7),
2623 nir_lower_dmod
= (1 << 8),
2624 nir_lower_dsub
= (1 << 9),
2625 nir_lower_ddiv
= (1 << 10),
2626 nir_lower_fp64_full_software
= (1 << 11),
2627 } nir_lower_doubles_options
;
2630 nir_divergence_single_prim_per_subgroup
= (1 << 0),
2631 nir_divergence_single_patch_per_tcs_subgroup
= (1 << 1),
2632 nir_divergence_single_patch_per_tes_subgroup
= (1 << 2),
2633 nir_divergence_view_index_uniform
= (1 << 3),
2634 } nir_divergence_options
;
2636 typedef struct nir_shader_compiler_options
{
2642 /** Lowers flrp when it does not support doubles */
2649 /** Lowers ibitfield_extract/ubitfield_extract to ibfe/ubfe. */
2650 bool lower_bitfield_extract
;
2651 /** Lowers ibitfield_extract/ubitfield_extract to compares, shifts. */
2652 bool lower_bitfield_extract_to_shifts
;
2653 /** Lowers bitfield_insert to bfi/bfm */
2654 bool lower_bitfield_insert
;
2655 /** Lowers bitfield_insert to compares, and shifts. */
2656 bool lower_bitfield_insert_to_shifts
;
2657 /** Lowers bitfield_insert to bfm/bitfield_select. */
2658 bool lower_bitfield_insert_to_bitfield_select
;
2659 /** Lowers bitfield_reverse to shifts. */
2660 bool lower_bitfield_reverse
;
2661 /** Lowers bit_count to shifts. */
2662 bool lower_bit_count
;
2663 /** Lowers ifind_msb to compare and ufind_msb */
2664 bool lower_ifind_msb
;
2665 /** Lowers find_lsb to ufind_msb and logic ops */
2666 bool lower_find_lsb
;
2667 bool lower_uadd_carry
;
2668 bool lower_usub_borrow
;
2669 /** Lowers imul_high/umul_high to 16-bit multiplies and carry operations. */
2670 bool lower_mul_high
;
2671 /** lowers fneg and ineg to fsub and isub. */
2673 /** lowers fsub and isub to fadd+fneg and iadd+ineg. */
2676 /* lower {slt,sge,seq,sne} to {flt,fge,feq,fne} + b2f: */
2679 /* lower fall_equalN/fany_nequalN (ex:fany_nequal4 to sne+fdot4+fsat) */
2680 bool lower_vector_cmp
;
2682 /** enables rules to lower idiv by power-of-two: */
2685 /** enable rules to avoid bit ops */
2688 /** enables rules to lower isign to imin+imax */
2691 /** enables rules to lower fsign to fsub and flt */
2694 /* lower fdph to fdot4 */
2697 /** lower fdot to fmul and fsum/fadd. */
2700 /* Does the native fdot instruction replicate its result for four
2701 * components? If so, then opt_algebraic_late will turn all fdotN
2702 * instructions into fdot_replicatedN instructions.
2704 bool fdot_replicates
;
2706 /** lowers ffloor to fsub+ffract: */
2709 /** lowers ffract to fsub+ffloor: */
2712 /** lowers fceil to fneg+ffloor+fneg: */
2719 bool lower_pack_half_2x16
;
2720 bool lower_pack_unorm_2x16
;
2721 bool lower_pack_snorm_2x16
;
2722 bool lower_pack_unorm_4x8
;
2723 bool lower_pack_snorm_4x8
;
2724 bool lower_unpack_half_2x16
;
2725 bool lower_unpack_unorm_2x16
;
2726 bool lower_unpack_snorm_2x16
;
2727 bool lower_unpack_unorm_4x8
;
2728 bool lower_unpack_snorm_4x8
;
2730 bool lower_extract_byte
;
2731 bool lower_extract_word
;
2733 bool lower_all_io_to_temps
;
2734 bool lower_all_io_to_elements
;
2736 /* Indicates that the driver only has zero-based vertex id */
2737 bool vertex_id_zero_based
;
2740 * If enabled, gl_BaseVertex will be lowered as:
2741 * is_indexed_draw (~0/0) & firstvertex
2743 bool lower_base_vertex
;
2746 * If enabled, gl_HelperInvocation will be lowered as:
2748 * !((1 << sample_id) & sample_mask_in))
2750 * This depends on some possibly hw implementation details, which may
2751 * not be true for all hw. In particular that the FS is only executed
2752 * for covered samples or for helper invocations. So, do not blindly
2753 * enable this option.
2755 * Note: See also issue #22 in ARB_shader_image_load_store
2757 bool lower_helper_invocation
;
2760 * Convert gl_SampleMaskIn to gl_HelperInvocation as follows:
2762 * gl_SampleMaskIn == 0 ---> gl_HelperInvocation
2763 * gl_SampleMaskIn != 0 ---> !gl_HelperInvocation
2765 bool optimize_sample_mask_in
;
2767 bool lower_cs_local_index_from_id
;
2768 bool lower_cs_local_id_from_index
;
2770 bool lower_device_index_to_zero
;
2772 /* Set if nir_lower_wpos_ytransform() should also invert gl_PointCoord. */
2773 bool lower_wpos_pntc
;
2779 * Should IO be re-vectorized? Some scalar ISAs still operate on vec4's
2780 * for IO purposes and would prefer loads/stores be vectorized.
2783 bool lower_to_scalar
;
2786 * Should nir_lower_io() create load_interpolated_input intrinsics?
2788 * If not, it generates regular load_input intrinsics and interpolation
2789 * information must be inferred from the list of input nir_variables.
2791 bool use_interpolated_input_intrinsics
;
2793 /* Lowers when 32x32->64 bit multiplication is not supported */
2794 bool lower_mul_2x32_64
;
2796 /* Lowers when rotate instruction is not supported */
2800 * Backend supports imul24, and would like to use it (when possible)
2801 * for address/offset calculation. If true, driver should call
2802 * nir_lower_amul(). (If not set, amul will automatically be lowered
2808 * Is this the Intel vec4 backend?
2810 * Used to inhibit algebraic optimizations that are known to be harmful on
2811 * the Intel vec4 backend. This is generally applicable to any
2812 * optimization that might cause more immediate values to be used in
2813 * 3-source (e.g., ffma and flrp) instructions.
2817 unsigned max_unroll_iterations
;
2819 nir_lower_int64_options lower_int64_options
;
2820 nir_lower_doubles_options lower_doubles_options
;
2821 } nir_shader_compiler_options
;
2823 typedef struct nir_shader
{
2824 /** list of uniforms (nir_variable) */
2825 struct exec_list uniforms
;
2827 /** list of inputs (nir_variable) */
2828 struct exec_list inputs
;
2830 /** list of outputs (nir_variable) */
2831 struct exec_list outputs
;
2833 /** list of shared compute variables (nir_variable) */
2834 struct exec_list shared
;
2836 /** Set of driver-specific options for the shader.
2838 * The memory for the options is expected to be kept in a single static
2839 * copy by the driver.
2841 const struct nir_shader_compiler_options
*options
;
2843 /** Various bits of compile-time information about a given shader */
2844 struct shader_info info
;
2846 /** list of global variables in the shader (nir_variable) */
2847 struct exec_list globals
;
2849 /** list of system value variables in the shader (nir_variable) */
2850 struct exec_list system_values
;
2852 struct exec_list functions
; /** < list of nir_function */
2855 * the highest index a load_input_*, load_uniform_*, etc. intrinsic can
2858 unsigned num_inputs
, num_uniforms
, num_outputs
, num_shared
;
2860 /** Size in bytes of required scratch space */
2861 unsigned scratch_size
;
2863 /** Constant data associated with this shader.
2865 * Constant data is loaded through load_constant intrinsics. See also
2866 * nir_opt_large_constants.
2868 void *constant_data
;
2869 unsigned constant_data_size
;
2872 #define nir_foreach_function(func, shader) \
2873 foreach_list_typed(nir_function, func, node, &(shader)->functions)
2875 static inline nir_function_impl
*
2876 nir_shader_get_entrypoint(nir_shader
*shader
)
2878 nir_function
*func
= NULL
;
2880 nir_foreach_function(function
, shader
) {
2881 assert(func
== NULL
);
2882 if (function
->is_entrypoint
) {
2893 assert(func
->num_params
== 0);
2898 nir_shader
*nir_shader_create(void *mem_ctx
,
2899 gl_shader_stage stage
,
2900 const nir_shader_compiler_options
*options
,
2903 nir_register
*nir_local_reg_create(nir_function_impl
*impl
);
2905 void nir_reg_remove(nir_register
*reg
);
2907 /** Adds a variable to the appropriate list in nir_shader */
2908 void nir_shader_add_variable(nir_shader
*shader
, nir_variable
*var
);
2911 nir_function_impl_add_variable(nir_function_impl
*impl
, nir_variable
*var
)
2913 assert(var
->data
.mode
== nir_var_function_temp
);
2914 exec_list_push_tail(&impl
->locals
, &var
->node
);
2917 /** creates a variable, sets a few defaults, and adds it to the list */
2918 nir_variable
*nir_variable_create(nir_shader
*shader
,
2919 nir_variable_mode mode
,
2920 const struct glsl_type
*type
,
2922 /** creates a local variable and adds it to the list */
2923 nir_variable
*nir_local_variable_create(nir_function_impl
*impl
,
2924 const struct glsl_type
*type
,
2927 /** creates a function and adds it to the shader's list of functions */
2928 nir_function
*nir_function_create(nir_shader
*shader
, const char *name
);
2930 nir_function_impl
*nir_function_impl_create(nir_function
*func
);
2931 /** creates a function_impl that isn't tied to any particular function */
2932 nir_function_impl
*nir_function_impl_create_bare(nir_shader
*shader
);
2934 nir_block
*nir_block_create(nir_shader
*shader
);
2935 nir_if
*nir_if_create(nir_shader
*shader
);
2936 nir_loop
*nir_loop_create(nir_shader
*shader
);
2938 nir_function_impl
*nir_cf_node_get_function(nir_cf_node
*node
);
2940 /** requests that the given pieces of metadata be generated */
2941 void nir_metadata_require(nir_function_impl
*impl
, nir_metadata required
, ...);
2942 /** dirties all but the preserved metadata */
2943 void nir_metadata_preserve(nir_function_impl
*impl
, nir_metadata preserved
);
2945 /** creates an instruction with default swizzle/writemask/etc. with NULL registers */
2946 nir_alu_instr
*nir_alu_instr_create(nir_shader
*shader
, nir_op op
);
2948 nir_deref_instr
*nir_deref_instr_create(nir_shader
*shader
,
2949 nir_deref_type deref_type
);
2951 nir_jump_instr
*nir_jump_instr_create(nir_shader
*shader
, nir_jump_type type
);
2953 nir_load_const_instr
*nir_load_const_instr_create(nir_shader
*shader
,
2954 unsigned num_components
,
2957 nir_intrinsic_instr
*nir_intrinsic_instr_create(nir_shader
*shader
,
2958 nir_intrinsic_op op
);
2960 nir_call_instr
*nir_call_instr_create(nir_shader
*shader
,
2961 nir_function
*callee
);
2963 nir_tex_instr
*nir_tex_instr_create(nir_shader
*shader
, unsigned num_srcs
);
2965 nir_phi_instr
*nir_phi_instr_create(nir_shader
*shader
);
2967 nir_parallel_copy_instr
*nir_parallel_copy_instr_create(nir_shader
*shader
);
2969 nir_ssa_undef_instr
*nir_ssa_undef_instr_create(nir_shader
*shader
,
2970 unsigned num_components
,
2973 nir_const_value
nir_alu_binop_identity(nir_op binop
, unsigned bit_size
);
2976 * NIR Cursors and Instruction Insertion API
2979 * A tiny struct representing a point to insert/extract instructions or
2980 * control flow nodes. Helps reduce the combinatorial explosion of possible
2981 * points to insert/extract.
2983 * \sa nir_control_flow.h
2986 nir_cursor_before_block
,
2987 nir_cursor_after_block
,
2988 nir_cursor_before_instr
,
2989 nir_cursor_after_instr
,
2990 } nir_cursor_option
;
2993 nir_cursor_option option
;
3000 static inline nir_block
*
3001 nir_cursor_current_block(nir_cursor cursor
)
3003 if (cursor
.option
== nir_cursor_before_instr
||
3004 cursor
.option
== nir_cursor_after_instr
) {
3005 return cursor
.instr
->block
;
3007 return cursor
.block
;
3011 bool nir_cursors_equal(nir_cursor a
, nir_cursor b
);
3013 static inline nir_cursor
3014 nir_before_block(nir_block
*block
)
3017 cursor
.option
= nir_cursor_before_block
;
3018 cursor
.block
= block
;
3022 static inline nir_cursor
3023 nir_after_block(nir_block
*block
)
3026 cursor
.option
= nir_cursor_after_block
;
3027 cursor
.block
= block
;
3031 static inline nir_cursor
3032 nir_before_instr(nir_instr
*instr
)
3035 cursor
.option
= nir_cursor_before_instr
;
3036 cursor
.instr
= instr
;
3040 static inline nir_cursor
3041 nir_after_instr(nir_instr
*instr
)
3044 cursor
.option
= nir_cursor_after_instr
;
3045 cursor
.instr
= instr
;
3049 static inline nir_cursor
3050 nir_after_block_before_jump(nir_block
*block
)
3052 nir_instr
*last_instr
= nir_block_last_instr(block
);
3053 if (last_instr
&& last_instr
->type
== nir_instr_type_jump
) {
3054 return nir_before_instr(last_instr
);
3056 return nir_after_block(block
);
3060 static inline nir_cursor
3061 nir_before_src(nir_src
*src
, bool is_if_condition
)
3063 if (is_if_condition
) {
3064 nir_block
*prev_block
=
3065 nir_cf_node_as_block(nir_cf_node_prev(&src
->parent_if
->cf_node
));
3066 assert(!nir_block_ends_in_jump(prev_block
));
3067 return nir_after_block(prev_block
);
3068 } else if (src
->parent_instr
->type
== nir_instr_type_phi
) {
3070 nir_phi_instr
*cond_phi
= nir_instr_as_phi(src
->parent_instr
);
3072 nir_foreach_phi_src(phi_src
, cond_phi
) {
3073 if (phi_src
->src
.ssa
== src
->ssa
) {
3080 /* The LIST_ENTRY macro is a generic container-of macro, it just happens
3081 * to have a more specific name.
3083 nir_phi_src
*phi_src
= LIST_ENTRY(nir_phi_src
, src
, src
);
3084 return nir_after_block_before_jump(phi_src
->pred
);
3086 return nir_before_instr(src
->parent_instr
);
3090 static inline nir_cursor
3091 nir_before_cf_node(nir_cf_node
*node
)
3093 if (node
->type
== nir_cf_node_block
)
3094 return nir_before_block(nir_cf_node_as_block(node
));
3096 return nir_after_block(nir_cf_node_as_block(nir_cf_node_prev(node
)));
3099 static inline nir_cursor
3100 nir_after_cf_node(nir_cf_node
*node
)
3102 if (node
->type
== nir_cf_node_block
)
3103 return nir_after_block(nir_cf_node_as_block(node
));
3105 return nir_before_block(nir_cf_node_as_block(nir_cf_node_next(node
)));
3108 static inline nir_cursor
3109 nir_after_phis(nir_block
*block
)
3111 nir_foreach_instr(instr
, block
) {
3112 if (instr
->type
!= nir_instr_type_phi
)
3113 return nir_before_instr(instr
);
3115 return nir_after_block(block
);
3118 static inline nir_cursor
3119 nir_after_cf_node_and_phis(nir_cf_node
*node
)
3121 if (node
->type
== nir_cf_node_block
)
3122 return nir_after_block(nir_cf_node_as_block(node
));
3124 nir_block
*block
= nir_cf_node_as_block(nir_cf_node_next(node
));
3126 return nir_after_phis(block
);
3129 static inline nir_cursor
3130 nir_before_cf_list(struct exec_list
*cf_list
)
3132 nir_cf_node
*first_node
= exec_node_data(nir_cf_node
,
3133 exec_list_get_head(cf_list
), node
);
3134 return nir_before_cf_node(first_node
);
3137 static inline nir_cursor
3138 nir_after_cf_list(struct exec_list
*cf_list
)
3140 nir_cf_node
*last_node
= exec_node_data(nir_cf_node
,
3141 exec_list_get_tail(cf_list
), node
);
3142 return nir_after_cf_node(last_node
);
3146 * Insert a NIR instruction at the given cursor.
3148 * Note: This does not update the cursor.
3150 void nir_instr_insert(nir_cursor cursor
, nir_instr
*instr
);
3153 nir_instr_insert_before(nir_instr
*instr
, nir_instr
*before
)
3155 nir_instr_insert(nir_before_instr(instr
), before
);
3159 nir_instr_insert_after(nir_instr
*instr
, nir_instr
*after
)
3161 nir_instr_insert(nir_after_instr(instr
), after
);
3165 nir_instr_insert_before_block(nir_block
*block
, nir_instr
*before
)
3167 nir_instr_insert(nir_before_block(block
), before
);
3171 nir_instr_insert_after_block(nir_block
*block
, nir_instr
*after
)
3173 nir_instr_insert(nir_after_block(block
), after
);
3177 nir_instr_insert_before_cf(nir_cf_node
*node
, nir_instr
*before
)
3179 nir_instr_insert(nir_before_cf_node(node
), before
);
3183 nir_instr_insert_after_cf(nir_cf_node
*node
, nir_instr
*after
)
3185 nir_instr_insert(nir_after_cf_node(node
), after
);
3189 nir_instr_insert_before_cf_list(struct exec_list
*list
, nir_instr
*before
)
3191 nir_instr_insert(nir_before_cf_list(list
), before
);
3195 nir_instr_insert_after_cf_list(struct exec_list
*list
, nir_instr
*after
)
3197 nir_instr_insert(nir_after_cf_list(list
), after
);
3200 void nir_instr_remove_v(nir_instr
*instr
);
3202 static inline nir_cursor
3203 nir_instr_remove(nir_instr
*instr
)
3206 nir_instr
*prev
= nir_instr_prev(instr
);
3208 cursor
= nir_after_instr(prev
);
3210 cursor
= nir_before_block(instr
->block
);
3212 nir_instr_remove_v(instr
);
3218 nir_ssa_def
*nir_instr_ssa_def(nir_instr
*instr
);
3220 typedef bool (*nir_foreach_ssa_def_cb
)(nir_ssa_def
*def
, void *state
);
3221 typedef bool (*nir_foreach_dest_cb
)(nir_dest
*dest
, void *state
);
3222 typedef bool (*nir_foreach_src_cb
)(nir_src
*src
, void *state
);
3223 bool nir_foreach_ssa_def(nir_instr
*instr
, nir_foreach_ssa_def_cb cb
,
3225 bool nir_foreach_dest(nir_instr
*instr
, nir_foreach_dest_cb cb
, void *state
);
3226 bool nir_foreach_src(nir_instr
*instr
, nir_foreach_src_cb cb
, void *state
);
3228 nir_const_value
*nir_src_as_const_value(nir_src src
);
3230 #define NIR_SRC_AS_(name, c_type, type_enum, cast_macro) \
3231 static inline c_type * \
3232 nir_src_as_ ## name (nir_src src) \
3234 return src.is_ssa && src.ssa->parent_instr->type == type_enum \
3235 ? cast_macro(src.ssa->parent_instr) : NULL; \
3238 NIR_SRC_AS_(alu_instr
, nir_alu_instr
, nir_instr_type_alu
, nir_instr_as_alu
)
3239 NIR_SRC_AS_(intrinsic
, nir_intrinsic_instr
,
3240 nir_instr_type_intrinsic
, nir_instr_as_intrinsic
)
3241 NIR_SRC_AS_(deref
, nir_deref_instr
, nir_instr_type_deref
, nir_instr_as_deref
)
3243 bool nir_src_is_dynamically_uniform(nir_src src
);
3244 bool nir_srcs_equal(nir_src src1
, nir_src src2
);
3245 bool nir_instrs_equal(const nir_instr
*instr1
, const nir_instr
*instr2
);
3246 void nir_instr_rewrite_src(nir_instr
*instr
, nir_src
*src
, nir_src new_src
);
3247 void nir_instr_move_src(nir_instr
*dest_instr
, nir_src
*dest
, nir_src
*src
);
3248 void nir_if_rewrite_condition(nir_if
*if_stmt
, nir_src new_src
);
3249 void nir_instr_rewrite_dest(nir_instr
*instr
, nir_dest
*dest
,
3252 void nir_ssa_dest_init(nir_instr
*instr
, nir_dest
*dest
,
3253 unsigned num_components
, unsigned bit_size
,
3255 void nir_ssa_def_init(nir_instr
*instr
, nir_ssa_def
*def
,
3256 unsigned num_components
, unsigned bit_size
,
3259 nir_ssa_dest_init_for_type(nir_instr
*instr
, nir_dest
*dest
,
3260 const struct glsl_type
*type
,
3263 assert(glsl_type_is_vector_or_scalar(type
));
3264 nir_ssa_dest_init(instr
, dest
, glsl_get_components(type
),
3265 glsl_get_bit_size(type
), name
);
3267 void nir_ssa_def_rewrite_uses(nir_ssa_def
*def
, nir_src new_src
);
3268 void nir_ssa_def_rewrite_uses_after(nir_ssa_def
*def
, nir_src new_src
,
3269 nir_instr
*after_me
);
3271 nir_component_mask_t
nir_ssa_def_components_read(const nir_ssa_def
*def
);
3274 * finds the next basic block in source-code order, returns NULL if there is
3278 nir_block
*nir_block_cf_tree_next(nir_block
*block
);
3280 /* Performs the opposite of nir_block_cf_tree_next() */
3282 nir_block
*nir_block_cf_tree_prev(nir_block
*block
);
3284 /* Gets the first block in a CF node in source-code order */
3286 nir_block
*nir_cf_node_cf_tree_first(nir_cf_node
*node
);
3288 /* Gets the last block in a CF node in source-code order */
3290 nir_block
*nir_cf_node_cf_tree_last(nir_cf_node
*node
);
3292 /* Gets the next block after a CF node in source-code order */
3294 nir_block
*nir_cf_node_cf_tree_next(nir_cf_node
*node
);
3296 /* Macros for loops that visit blocks in source-code order */
3298 #define nir_foreach_block(block, impl) \
3299 for (nir_block *block = nir_start_block(impl); block != NULL; \
3300 block = nir_block_cf_tree_next(block))
3302 #define nir_foreach_block_safe(block, impl) \
3303 for (nir_block *block = nir_start_block(impl), \
3304 *next = nir_block_cf_tree_next(block); \
3306 block = next, next = nir_block_cf_tree_next(block))
3308 #define nir_foreach_block_reverse(block, impl) \
3309 for (nir_block *block = nir_impl_last_block(impl); block != NULL; \
3310 block = nir_block_cf_tree_prev(block))
3312 #define nir_foreach_block_reverse_safe(block, impl) \
3313 for (nir_block *block = nir_impl_last_block(impl), \
3314 *prev = nir_block_cf_tree_prev(block); \
3316 block = prev, prev = nir_block_cf_tree_prev(block))
3318 #define nir_foreach_block_in_cf_node(block, node) \
3319 for (nir_block *block = nir_cf_node_cf_tree_first(node); \
3320 block != nir_cf_node_cf_tree_next(node); \
3321 block = nir_block_cf_tree_next(block))
3323 /* If the following CF node is an if, this function returns that if.
3324 * Otherwise, it returns NULL.
3326 nir_if
*nir_block_get_following_if(nir_block
*block
);
3328 nir_loop
*nir_block_get_following_loop(nir_block
*block
);
3330 void nir_index_local_regs(nir_function_impl
*impl
);
3331 void nir_index_ssa_defs(nir_function_impl
*impl
);
3332 unsigned nir_index_instrs(nir_function_impl
*impl
);
3334 void nir_index_blocks(nir_function_impl
*impl
);
3336 void nir_print_shader(nir_shader
*shader
, FILE *fp
);
3337 void nir_print_shader_annotated(nir_shader
*shader
, FILE *fp
, struct hash_table
*errors
);
3338 void nir_print_instr(const nir_instr
*instr
, FILE *fp
);
3339 void nir_print_deref(const nir_deref_instr
*deref
, FILE *fp
);
3341 /** Shallow clone of a single ALU instruction. */
3342 nir_alu_instr
*nir_alu_instr_clone(nir_shader
*s
, const nir_alu_instr
*orig
);
3344 nir_shader
*nir_shader_clone(void *mem_ctx
, const nir_shader
*s
);
3345 nir_function_impl
*nir_function_impl_clone(nir_shader
*shader
,
3346 const nir_function_impl
*fi
);
3347 nir_constant
*nir_constant_clone(const nir_constant
*c
, nir_variable
*var
);
3348 nir_variable
*nir_variable_clone(const nir_variable
*c
, nir_shader
*shader
);
3350 void nir_shader_replace(nir_shader
*dest
, nir_shader
*src
);
3352 void nir_shader_serialize_deserialize(nir_shader
*s
);
3355 void nir_validate_shader(nir_shader
*shader
, const char *when
);
3356 void nir_metadata_set_validation_flag(nir_shader
*shader
);
3357 void nir_metadata_check_validation_flag(nir_shader
*shader
);
3360 should_skip_nir(const char *name
)
3362 static const char *list
= NULL
;
3364 /* Comma separated list of names to skip. */
3365 list
= getenv("NIR_SKIP");
3373 return comma_separated_list_contains(list
, name
);
3377 should_clone_nir(void)
3379 static int should_clone
= -1;
3380 if (should_clone
< 0)
3381 should_clone
= env_var_as_boolean("NIR_TEST_CLONE", false);
3383 return should_clone
;
3387 should_serialize_deserialize_nir(void)
3389 static int test_serialize
= -1;
3390 if (test_serialize
< 0)
3391 test_serialize
= env_var_as_boolean("NIR_TEST_SERIALIZE", false);
3393 return test_serialize
;
3397 should_print_nir(void)
3399 static int should_print
= -1;
3400 if (should_print
< 0)
3401 should_print
= env_var_as_boolean("NIR_PRINT", false);
3403 return should_print
;
3406 static inline void nir_validate_shader(nir_shader
*shader
, const char *when
) { (void) shader
; (void)when
; }
3407 static inline void nir_metadata_set_validation_flag(nir_shader
*shader
) { (void) shader
; }
3408 static inline void nir_metadata_check_validation_flag(nir_shader
*shader
) { (void) shader
; }
3409 static inline bool should_skip_nir(UNUSED
const char *pass_name
) { return false; }
3410 static inline bool should_clone_nir(void) { return false; }
3411 static inline bool should_serialize_deserialize_nir(void) { return false; }
3412 static inline bool should_print_nir(void) { return false; }
3415 #define _PASS(pass, nir, do_pass) do { \
3416 if (should_skip_nir(#pass)) { \
3417 printf("skipping %s\n", #pass); \
3421 nir_validate_shader(nir, "after " #pass); \
3422 if (should_clone_nir()) { \
3423 nir_shader *clone = nir_shader_clone(ralloc_parent(nir), nir); \
3424 nir_shader_replace(nir, clone); \
3426 if (should_serialize_deserialize_nir()) { \
3427 nir_shader_serialize_deserialize(nir); \
3431 #define NIR_PASS(progress, nir, pass, ...) _PASS(pass, nir, \
3432 nir_metadata_set_validation_flag(nir); \
3433 if (should_print_nir()) \
3434 printf("%s\n", #pass); \
3435 if (pass(nir, ##__VA_ARGS__)) { \
3437 if (should_print_nir()) \
3438 nir_print_shader(nir, stdout); \
3439 nir_metadata_check_validation_flag(nir); \
3443 #define NIR_PASS_V(nir, pass, ...) _PASS(pass, nir, \
3444 if (should_print_nir()) \
3445 printf("%s\n", #pass); \
3446 pass(nir, ##__VA_ARGS__); \
3447 if (should_print_nir()) \
3448 nir_print_shader(nir, stdout); \
3451 #define NIR_SKIP(name) should_skip_nir(#name)
3453 /** An instruction filtering callback
3455 * Returns true if the instruction should be processed and false otherwise.
3457 typedef bool (*nir_instr_filter_cb
)(const nir_instr
*, const void *);
3459 /** A simple instruction lowering callback
3461 * Many instruction lowering passes can be written as a simple function which
3462 * takes an instruction as its input and returns a sequence of instructions
3463 * that implement the consumed instruction. This function type represents
3464 * such a lowering function. When called, a function with this prototype
3465 * should either return NULL indicating that no lowering needs to be done or
3466 * emit a sequence of instructions using the provided builder (whose cursor
3467 * will already be placed after the instruction to be lowered) and return the
3468 * resulting nir_ssa_def.
3470 typedef nir_ssa_def
*(*nir_lower_instr_cb
)(struct nir_builder
*,
3471 nir_instr
*, void *);
3474 * Special return value for nir_lower_instr_cb when some progress occurred
3475 * (like changing an input to the instr) that didn't result in a replacement
3476 * SSA def being generated.
3478 #define NIR_LOWER_INSTR_PROGRESS ((nir_ssa_def *)(uintptr_t)1)
3480 /** Iterate over all the instructions in a nir_function_impl and lower them
3481 * using the provided callbacks
3483 * This function implements the guts of a standard lowering pass for you. It
3484 * iterates over all of the instructions in a nir_function_impl and calls the
3485 * filter callback on each one. If the filter callback returns true, it then
3486 * calls the lowering call back on the instruction. (Splitting it this way
3487 * allows us to avoid some save/restore work for instructions we know won't be
3488 * lowered.) If the instruction is dead after the lowering is complete, it
3489 * will be removed. If new instructions are added, the lowering callback will
3490 * also be called on them in case multiple lowerings are required.
3492 * The metadata for the nir_function_impl will also be updated. If any blocks
3493 * are added (they cannot be removed), dominance and block indices will be
3496 bool nir_function_impl_lower_instructions(nir_function_impl
*impl
,
3497 nir_instr_filter_cb filter
,
3498 nir_lower_instr_cb lower
,
3500 bool nir_shader_lower_instructions(nir_shader
*shader
,
3501 nir_instr_filter_cb filter
,
3502 nir_lower_instr_cb lower
,
3505 void nir_calc_dominance_impl(nir_function_impl
*impl
);
3506 void nir_calc_dominance(nir_shader
*shader
);
3508 nir_block
*nir_dominance_lca(nir_block
*b1
, nir_block
*b2
);
3509 bool nir_block_dominates(nir_block
*parent
, nir_block
*child
);
3510 bool nir_block_is_unreachable(nir_block
*block
);
3512 void nir_dump_dom_tree_impl(nir_function_impl
*impl
, FILE *fp
);
3513 void nir_dump_dom_tree(nir_shader
*shader
, FILE *fp
);
3515 void nir_dump_dom_frontier_impl(nir_function_impl
*impl
, FILE *fp
);
3516 void nir_dump_dom_frontier(nir_shader
*shader
, FILE *fp
);
3518 void nir_dump_cfg_impl(nir_function_impl
*impl
, FILE *fp
);
3519 void nir_dump_cfg(nir_shader
*shader
, FILE *fp
);
3521 int nir_gs_count_vertices(const nir_shader
*shader
);
3523 bool nir_shrink_vec_array_vars(nir_shader
*shader
, nir_variable_mode modes
);
3524 bool nir_split_array_vars(nir_shader
*shader
, nir_variable_mode modes
);
3525 bool nir_split_var_copies(nir_shader
*shader
);
3526 bool nir_split_per_member_structs(nir_shader
*shader
);
3527 bool nir_split_struct_vars(nir_shader
*shader
, nir_variable_mode modes
);
3529 bool nir_lower_returns_impl(nir_function_impl
*impl
);
3530 bool nir_lower_returns(nir_shader
*shader
);
3532 void nir_inline_function_impl(struct nir_builder
*b
,
3533 const nir_function_impl
*impl
,
3534 nir_ssa_def
**params
);
3535 bool nir_inline_functions(nir_shader
*shader
);
3537 bool nir_propagate_invariant(nir_shader
*shader
);
3539 void nir_lower_var_copy_instr(nir_intrinsic_instr
*copy
, nir_shader
*shader
);
3540 void nir_lower_deref_copy_instr(struct nir_builder
*b
,
3541 nir_intrinsic_instr
*copy
);
3542 bool nir_lower_var_copies(nir_shader
*shader
);
3544 void nir_fixup_deref_modes(nir_shader
*shader
);
3546 bool nir_lower_global_vars_to_local(nir_shader
*shader
);
3549 nir_lower_direct_array_deref_of_vec_load
= (1 << 0),
3550 nir_lower_indirect_array_deref_of_vec_load
= (1 << 1),
3551 nir_lower_direct_array_deref_of_vec_store
= (1 << 2),
3552 nir_lower_indirect_array_deref_of_vec_store
= (1 << 3),
3553 } nir_lower_array_deref_of_vec_options
;
3555 bool nir_lower_array_deref_of_vec(nir_shader
*shader
, nir_variable_mode modes
,
3556 nir_lower_array_deref_of_vec_options options
);
3558 bool nir_lower_indirect_derefs(nir_shader
*shader
, nir_variable_mode modes
);
3560 bool nir_lower_locals_to_regs(nir_shader
*shader
);
3562 void nir_lower_io_to_temporaries(nir_shader
*shader
,
3563 nir_function_impl
*entrypoint
,
3564 bool outputs
, bool inputs
);
3566 bool nir_lower_vars_to_scratch(nir_shader
*shader
,
3567 nir_variable_mode modes
,
3569 glsl_type_size_align_func size_align
);
3571 void nir_shader_gather_info(nir_shader
*shader
, nir_function_impl
*entrypoint
);
3573 void nir_gather_ssa_types(nir_function_impl
*impl
,
3574 BITSET_WORD
*float_types
,
3575 BITSET_WORD
*int_types
);
3577 void nir_assign_var_locations(struct exec_list
*var_list
, unsigned *size
,
3578 int (*type_size
)(const struct glsl_type
*, bool));
3580 /* Some helpers to do very simple linking */
3581 bool nir_remove_unused_varyings(nir_shader
*producer
, nir_shader
*consumer
);
3582 bool nir_remove_unused_io_vars(nir_shader
*shader
, struct exec_list
*var_list
,
3583 uint64_t *used_by_other_stage
,
3584 uint64_t *used_by_other_stage_patches
);
3585 void nir_compact_varyings(nir_shader
*producer
, nir_shader
*consumer
,
3586 bool default_to_smooth_interp
);
3587 void nir_link_xfb_varyings(nir_shader
*producer
, nir_shader
*consumer
);
3588 bool nir_link_opt_varyings(nir_shader
*producer
, nir_shader
*consumer
);
3590 bool nir_lower_amul(nir_shader
*shader
,
3591 int (*type_size
)(const struct glsl_type
*, bool));
3593 void nir_assign_io_var_locations(struct exec_list
*var_list
,
3595 gl_shader_stage stage
);
3598 /* If set, this causes all 64-bit IO operations to be lowered on-the-fly
3599 * to 32-bit operations. This is only valid for nir_var_shader_in/out
3602 nir_lower_io_lower_64bit_to_32
= (1 << 0),
3604 /* If set, this forces all non-flat fragment shader inputs to be
3605 * interpolated as if with the "sample" qualifier. This requires
3606 * nir_shader_compiler_options::use_interpolated_input_intrinsics.
3608 nir_lower_io_force_sample_interpolation
= (1 << 1),
3609 } nir_lower_io_options
;
3610 bool nir_lower_io(nir_shader
*shader
,
3611 nir_variable_mode modes
,
3612 int (*type_size
)(const struct glsl_type
*, bool),
3613 nir_lower_io_options
);
3615 bool nir_io_add_const_offset_to_base(nir_shader
*nir
, nir_variable_mode mode
);
3618 nir_lower_vars_to_explicit_types(nir_shader
*shader
,
3619 nir_variable_mode modes
,
3620 glsl_type_size_align_func type_info
);
3624 * An address format which is a simple 32-bit global GPU address.
3626 nir_address_format_32bit_global
,
3629 * An address format which is a simple 64-bit global GPU address.
3631 nir_address_format_64bit_global
,
3634 * An address format which is a bounds-checked 64-bit global GPU address.
3636 * The address is comprised as a 32-bit vec4 where .xy are a uint64_t base
3637 * address stored with the low bits in .x and high bits in .y, .z is a
3638 * size, and .w is an offset. When the final I/O operation is lowered, .w
3639 * is checked against .z and the operation is predicated on the result.
3641 nir_address_format_64bit_bounded_global
,
3644 * An address format which is comprised of a vec2 where the first
3645 * component is a buffer index and the second is an offset.
3647 nir_address_format_32bit_index_offset
,
3650 * An address format which is a simple 32-bit offset.
3652 nir_address_format_32bit_offset
,
3655 * An address format representing a purely logical addressing model. In
3656 * this model, all deref chains must be complete from the dereference
3657 * operation to the variable. Cast derefs are not allowed. These
3658 * addresses will be 32-bit scalars but the format is immaterial because
3659 * you can always chase the chain.
3661 nir_address_format_logical
,
3662 } nir_address_format
;
3664 static inline unsigned
3665 nir_address_format_bit_size(nir_address_format addr_format
)
3667 switch (addr_format
) {
3668 case nir_address_format_32bit_global
: return 32;
3669 case nir_address_format_64bit_global
: return 64;
3670 case nir_address_format_64bit_bounded_global
: return 32;
3671 case nir_address_format_32bit_index_offset
: return 32;
3672 case nir_address_format_32bit_offset
: return 32;
3673 case nir_address_format_logical
: return 32;
3675 unreachable("Invalid address format");
3678 static inline unsigned
3679 nir_address_format_num_components(nir_address_format addr_format
)
3681 switch (addr_format
) {
3682 case nir_address_format_32bit_global
: return 1;
3683 case nir_address_format_64bit_global
: return 1;
3684 case nir_address_format_64bit_bounded_global
: return 4;
3685 case nir_address_format_32bit_index_offset
: return 2;
3686 case nir_address_format_32bit_offset
: return 1;
3687 case nir_address_format_logical
: return 1;
3689 unreachable("Invalid address format");
3692 static inline const struct glsl_type
*
3693 nir_address_format_to_glsl_type(nir_address_format addr_format
)
3695 unsigned bit_size
= nir_address_format_bit_size(addr_format
);
3696 assert(bit_size
== 32 || bit_size
== 64);
3697 return glsl_vector_type(bit_size
== 32 ? GLSL_TYPE_UINT
: GLSL_TYPE_UINT64
,
3698 nir_address_format_num_components(addr_format
));
3701 const nir_const_value
*nir_address_format_null_value(nir_address_format addr_format
);
3703 nir_ssa_def
*nir_build_addr_ieq(struct nir_builder
*b
, nir_ssa_def
*addr0
, nir_ssa_def
*addr1
,
3704 nir_address_format addr_format
);
3706 nir_ssa_def
*nir_build_addr_isub(struct nir_builder
*b
, nir_ssa_def
*addr0
, nir_ssa_def
*addr1
,
3707 nir_address_format addr_format
);
3709 nir_ssa_def
* nir_explicit_io_address_from_deref(struct nir_builder
*b
,
3710 nir_deref_instr
*deref
,
3711 nir_ssa_def
*base_addr
,
3712 nir_address_format addr_format
);
3713 void nir_lower_explicit_io_instr(struct nir_builder
*b
,
3714 nir_intrinsic_instr
*io_instr
,
3716 nir_address_format addr_format
);
3718 bool nir_lower_explicit_io(nir_shader
*shader
,
3719 nir_variable_mode modes
,
3720 nir_address_format
);
3722 nir_src
*nir_get_io_offset_src(nir_intrinsic_instr
*instr
);
3723 nir_src
*nir_get_io_vertex_index_src(nir_intrinsic_instr
*instr
);
3725 bool nir_is_per_vertex_io(const nir_variable
*var
, gl_shader_stage stage
);
3727 bool nir_lower_regs_to_ssa_impl(nir_function_impl
*impl
);
3728 bool nir_lower_regs_to_ssa(nir_shader
*shader
);
3729 bool nir_lower_vars_to_ssa(nir_shader
*shader
);
3731 bool nir_remove_dead_derefs(nir_shader
*shader
);
3732 bool nir_remove_dead_derefs_impl(nir_function_impl
*impl
);
3733 bool nir_remove_dead_variables(nir_shader
*shader
, nir_variable_mode modes
);
3734 bool nir_lower_constant_initializers(nir_shader
*shader
,
3735 nir_variable_mode modes
);
3737 bool nir_move_vec_src_uses_to_dest(nir_shader
*shader
);
3738 bool nir_lower_vec_to_movs(nir_shader
*shader
);
3739 void nir_lower_alpha_test(nir_shader
*shader
, enum compare_func func
,
3741 const gl_state_index16
*alpha_ref_state_tokens
);
3742 bool nir_lower_alu(nir_shader
*shader
);
3744 bool nir_lower_flrp(nir_shader
*shader
, unsigned lowering_mask
,
3745 bool always_precise
, bool have_ffma
);
3747 bool nir_lower_alu_to_scalar(nir_shader
*shader
, nir_instr_filter_cb cb
, const void *data
);
3748 bool nir_lower_bool_to_float(nir_shader
*shader
);
3749 bool nir_lower_bool_to_int32(nir_shader
*shader
);
3750 bool nir_lower_int_to_float(nir_shader
*shader
);
3751 bool nir_lower_load_const_to_scalar(nir_shader
*shader
);
3752 bool nir_lower_read_invocation_to_scalar(nir_shader
*shader
);
3753 bool nir_lower_phis_to_scalar(nir_shader
*shader
);
3754 void nir_lower_io_arrays_to_elements(nir_shader
*producer
, nir_shader
*consumer
);
3755 void nir_lower_io_arrays_to_elements_no_indirects(nir_shader
*shader
,
3757 void nir_lower_io_to_scalar(nir_shader
*shader
, nir_variable_mode mask
);
3758 void nir_lower_io_to_scalar_early(nir_shader
*shader
, nir_variable_mode mask
);
3759 bool nir_lower_io_to_vector(nir_shader
*shader
, nir_variable_mode mask
);
3761 void nir_lower_fragcoord_wtrans(nir_shader
*shader
);
3762 void nir_lower_viewport_transform(nir_shader
*shader
);
3763 bool nir_lower_uniforms_to_ubo(nir_shader
*shader
, int multiplier
);
3765 typedef struct nir_lower_subgroups_options
{
3766 uint8_t subgroup_size
;
3767 uint8_t ballot_bit_size
;
3768 bool lower_to_scalar
:1;
3769 bool lower_vote_trivial
:1;
3770 bool lower_vote_eq_to_ballot
:1;
3771 bool lower_subgroup_masks
:1;
3772 bool lower_shuffle
:1;
3773 bool lower_shuffle_to_32bit
:1;
3775 } nir_lower_subgroups_options
;
3777 bool nir_lower_subgroups(nir_shader
*shader
,
3778 const nir_lower_subgroups_options
*options
);
3780 bool nir_lower_system_values(nir_shader
*shader
);
3782 enum PACKED nir_lower_tex_packing
{
3783 nir_lower_tex_packing_none
= 0,
3784 /* The sampler returns up to 2 32-bit words of half floats or 16-bit signed
3785 * or unsigned ints based on the sampler type
3787 nir_lower_tex_packing_16
,
3788 /* The sampler returns 1 32-bit word of 4x8 unorm */
3789 nir_lower_tex_packing_8
,
3792 typedef struct nir_lower_tex_options
{
3794 * bitmask of (1 << GLSL_SAMPLER_DIM_x) to control for which
3795 * sampler types a texture projector is lowered.
3800 * If true, lower away nir_tex_src_offset for all texelfetch instructions.
3802 bool lower_txf_offset
;
3805 * If true, lower away nir_tex_src_offset for all rect textures.
3807 bool lower_rect_offset
;
3810 * If true, lower rect textures to 2D, using txs to fetch the
3811 * texture dimensions and dividing the texture coords by the
3812 * texture dims to normalize.
3817 * If true, convert yuv to rgb.
3819 unsigned lower_y_uv_external
;
3820 unsigned lower_y_u_v_external
;
3821 unsigned lower_yx_xuxv_external
;
3822 unsigned lower_xy_uxvx_external
;
3823 unsigned lower_ayuv_external
;
3824 unsigned lower_xyuv_external
;
3827 * To emulate certain texture wrap modes, this can be used
3828 * to saturate the specified tex coord to [0.0, 1.0]. The
3829 * bits are according to sampler #, ie. if, for example:
3831 * (conf->saturate_s & (1 << n))
3833 * is true, then the s coord for sampler n is saturated.
3835 * Note that clamping must happen *after* projector lowering
3836 * so any projected texture sample instruction with a clamped
3837 * coordinate gets automatically lowered, regardless of the
3838 * 'lower_txp' setting.
3840 unsigned saturate_s
;
3841 unsigned saturate_t
;
3842 unsigned saturate_r
;
3844 /* Bitmask of textures that need swizzling.
3846 * If (swizzle_result & (1 << texture_index)), then the swizzle in
3847 * swizzles[texture_index] is applied to the result of the texturing
3850 unsigned swizzle_result
;
3852 /* A swizzle for each texture. Values 0-3 represent x, y, z, or w swizzles
3853 * while 4 and 5 represent 0 and 1 respectively.
3855 uint8_t swizzles
[32][4];
3857 /* Can be used to scale sampled values in range required by the format. */
3858 float scale_factors
[32];
3861 * Bitmap of textures that need srgb to linear conversion. If
3862 * (lower_srgb & (1 << texture_index)) then the rgb (xyz) components
3863 * of the texture are lowered to linear.
3865 unsigned lower_srgb
;
3868 * If true, lower nir_texop_tex on shaders that doesn't support implicit
3869 * LODs to nir_texop_txl.
3871 bool lower_tex_without_implicit_lod
;
3874 * If true, lower nir_texop_txd on cube maps with nir_texop_txl.
3876 bool lower_txd_cube_map
;
3879 * If true, lower nir_texop_txd on 3D surfaces with nir_texop_txl.
3884 * If true, lower nir_texop_txd on shadow samplers (except cube maps)
3885 * with nir_texop_txl. Notice that cube map shadow samplers are lowered
3886 * with lower_txd_cube_map.
3888 bool lower_txd_shadow
;
3891 * If true, lower nir_texop_txd on all samplers to a nir_texop_txl.
3892 * Implies lower_txd_cube_map and lower_txd_shadow.
3897 * If true, lower nir_texop_txb that try to use shadow compare and min_lod
3898 * at the same time to a nir_texop_lod, some math, and nir_texop_tex.
3900 bool lower_txb_shadow_clamp
;
3903 * If true, lower nir_texop_txd on shadow samplers when it uses min_lod
3904 * with nir_texop_txl. This includes cube maps.
3906 bool lower_txd_shadow_clamp
;
3909 * If true, lower nir_texop_txd on when it uses both offset and min_lod
3910 * with nir_texop_txl. This includes cube maps.
3912 bool lower_txd_offset_clamp
;
3915 * If true, lower nir_texop_txd with min_lod to a nir_texop_txl if the
3916 * sampler is bindless.
3918 bool lower_txd_clamp_bindless_sampler
;
3921 * If true, lower nir_texop_txd with min_lod to a nir_texop_txl if the
3922 * sampler index is not statically determinable to be less than 16.
3924 bool lower_txd_clamp_if_sampler_index_not_lt_16
;
3927 * If true, lower nir_texop_txs with a non-0-lod into nir_texop_txs with
3928 * 0-lod followed by a nir_ishr.
3933 * If true, apply a .bagr swizzle on tg4 results to handle Broadcom's
3934 * mixed-up tg4 locations.
3936 bool lower_tg4_broadcom_swizzle
;
3939 * If true, lowers tg4 with 4 constant offsets to 4 tg4 calls
3941 bool lower_tg4_offsets
;
3943 enum nir_lower_tex_packing lower_tex_packing
[32];
3944 } nir_lower_tex_options
;
3946 bool nir_lower_tex(nir_shader
*shader
,
3947 const nir_lower_tex_options
*options
);
3949 enum nir_lower_non_uniform_access_type
{
3950 nir_lower_non_uniform_ubo_access
= (1 << 0),
3951 nir_lower_non_uniform_ssbo_access
= (1 << 1),
3952 nir_lower_non_uniform_texture_access
= (1 << 2),
3953 nir_lower_non_uniform_image_access
= (1 << 3),
3956 bool nir_lower_non_uniform_access(nir_shader
*shader
,
3957 enum nir_lower_non_uniform_access_type
);
3959 enum nir_lower_idiv_path
{
3960 /* This path is based on NV50LegalizeSSA::handleDIV(). It is the faster of
3961 * the two but it is not exact in some cases (for example, 1091317713u /
3962 * 1034u gives 5209173 instead of 1055432) */
3963 nir_lower_idiv_fast
,
3964 /* This path is based on AMDGPUTargetLowering::LowerUDIVREM() and
3965 * AMDGPUTargetLowering::LowerSDIVREM(). It requires more instructions than
3966 * the nv50 path and many of them are integer multiplications, so it is
3967 * probably slower. It should always return the correct result, though. */
3968 nir_lower_idiv_precise
,
3971 bool nir_lower_idiv(nir_shader
*shader
, enum nir_lower_idiv_path path
);
3973 bool nir_lower_input_attachments(nir_shader
*shader
, bool use_fragcoord_sysval
);
3975 bool nir_lower_clip_vs(nir_shader
*shader
, unsigned ucp_enables
,
3977 bool use_clipdist_array
,
3978 const gl_state_index16 clipplane_state_tokens
[][STATE_LENGTH
]);
3979 bool nir_lower_clip_gs(nir_shader
*shader
, unsigned ucp_enables
,
3980 bool use_clipdist_array
,
3981 const gl_state_index16 clipplane_state_tokens
[][STATE_LENGTH
]);
3982 bool nir_lower_clip_fs(nir_shader
*shader
, unsigned ucp_enables
,
3983 bool use_clipdist_array
);
3984 bool nir_lower_clip_cull_distance_arrays(nir_shader
*nir
);
3986 void nir_lower_point_size_mov(nir_shader
*shader
,
3987 const gl_state_index16
*pointsize_state_tokens
);
3989 bool nir_lower_frexp(nir_shader
*nir
);
3991 void nir_lower_two_sided_color(nir_shader
*shader
);
3993 bool nir_lower_clamp_color_outputs(nir_shader
*shader
);
3995 bool nir_lower_flatshade(nir_shader
*shader
);
3997 void nir_lower_passthrough_edgeflags(nir_shader
*shader
);
3998 bool nir_lower_patch_vertices(nir_shader
*nir
, unsigned static_count
,
3999 const gl_state_index16
*uniform_state_tokens
);
4001 typedef struct nir_lower_wpos_ytransform_options
{
4002 gl_state_index16 state_tokens
[STATE_LENGTH
];
4003 bool fs_coord_origin_upper_left
:1;
4004 bool fs_coord_origin_lower_left
:1;
4005 bool fs_coord_pixel_center_integer
:1;
4006 bool fs_coord_pixel_center_half_integer
:1;
4007 } nir_lower_wpos_ytransform_options
;
4009 bool nir_lower_wpos_ytransform(nir_shader
*shader
,
4010 const nir_lower_wpos_ytransform_options
*options
);
4011 bool nir_lower_wpos_center(nir_shader
*shader
, const bool for_sample_shading
);
4013 bool nir_lower_fb_read(nir_shader
*shader
);
4015 typedef struct nir_lower_drawpixels_options
{
4016 gl_state_index16 texcoord_state_tokens
[STATE_LENGTH
];
4017 gl_state_index16 scale_state_tokens
[STATE_LENGTH
];
4018 gl_state_index16 bias_state_tokens
[STATE_LENGTH
];
4019 unsigned drawpix_sampler
;
4020 unsigned pixelmap_sampler
;
4022 bool scale_and_bias
:1;
4023 } nir_lower_drawpixels_options
;
4025 void nir_lower_drawpixels(nir_shader
*shader
,
4026 const nir_lower_drawpixels_options
*options
);
4028 typedef struct nir_lower_bitmap_options
{
4031 } nir_lower_bitmap_options
;
4033 void nir_lower_bitmap(nir_shader
*shader
, const nir_lower_bitmap_options
*options
);
4035 bool nir_lower_atomics_to_ssbo(nir_shader
*shader
, unsigned ssbo_offset
);
4038 nir_lower_int_source_mods
= 1 << 0,
4039 nir_lower_float_source_mods
= 1 << 1,
4040 nir_lower_triop_abs
= 1 << 2,
4041 nir_lower_all_source_mods
= (1 << 3) - 1
4042 } nir_lower_to_source_mods_flags
;
4045 bool nir_lower_to_source_mods(nir_shader
*shader
, nir_lower_to_source_mods_flags options
);
4047 bool nir_lower_gs_intrinsics(nir_shader
*shader
);
4049 typedef unsigned (*nir_lower_bit_size_callback
)(const nir_alu_instr
*, void *);
4051 bool nir_lower_bit_size(nir_shader
*shader
,
4052 nir_lower_bit_size_callback callback
,
4053 void *callback_data
);
4055 nir_lower_int64_options
nir_lower_int64_op_to_options_mask(nir_op opcode
);
4056 bool nir_lower_int64(nir_shader
*shader
, nir_lower_int64_options options
);
4058 nir_lower_doubles_options
nir_lower_doubles_op_to_options_mask(nir_op opcode
);
4059 bool nir_lower_doubles(nir_shader
*shader
, const nir_shader
*softfp64
,
4060 nir_lower_doubles_options options
);
4061 bool nir_lower_pack(nir_shader
*shader
);
4063 bool nir_lower_point_size(nir_shader
*shader
, float min
, float max
);
4066 nir_lower_interpolation_at_sample
= (1 << 1),
4067 nir_lower_interpolation_at_offset
= (1 << 2),
4068 nir_lower_interpolation_centroid
= (1 << 3),
4069 nir_lower_interpolation_pixel
= (1 << 4),
4070 nir_lower_interpolation_sample
= (1 << 5),
4071 } nir_lower_interpolation_options
;
4073 bool nir_lower_interpolation(nir_shader
*shader
,
4074 nir_lower_interpolation_options options
);
4076 bool nir_normalize_cubemap_coords(nir_shader
*shader
);
4078 void nir_live_ssa_defs_impl(nir_function_impl
*impl
);
4080 void nir_loop_analyze_impl(nir_function_impl
*impl
,
4081 nir_variable_mode indirect_mask
);
4083 bool nir_ssa_defs_interfere(nir_ssa_def
*a
, nir_ssa_def
*b
);
4085 bool nir_repair_ssa_impl(nir_function_impl
*impl
);
4086 bool nir_repair_ssa(nir_shader
*shader
);
4088 void nir_convert_loop_to_lcssa(nir_loop
*loop
);
4089 bool nir_convert_to_lcssa(nir_shader
*shader
, bool skip_invariants
, bool skip_bool_invariants
);
4090 bool* nir_divergence_analysis(nir_shader
*shader
, nir_divergence_options options
);
4092 /* If phi_webs_only is true, only convert SSA values involved in phi nodes to
4093 * registers. If false, convert all values (even those not involved in a phi
4094 * node) to registers.
4096 bool nir_convert_from_ssa(nir_shader
*shader
, bool phi_webs_only
);
4098 bool nir_lower_phis_to_regs_block(nir_block
*block
);
4099 bool nir_lower_ssa_defs_to_regs_block(nir_block
*block
);
4100 bool nir_rematerialize_derefs_in_use_blocks_impl(nir_function_impl
*impl
);
4102 bool nir_lower_samplers(nir_shader
*shader
);
4104 /* This is here for unit tests. */
4105 bool nir_opt_comparison_pre_impl(nir_function_impl
*impl
);
4107 bool nir_opt_comparison_pre(nir_shader
*shader
);
4109 bool nir_opt_access(nir_shader
*shader
);
4110 bool nir_opt_algebraic(nir_shader
*shader
);
4111 bool nir_opt_algebraic_before_ffma(nir_shader
*shader
);
4112 bool nir_opt_algebraic_late(nir_shader
*shader
);
4113 bool nir_opt_constant_folding(nir_shader
*shader
);
4115 bool nir_opt_combine_stores(nir_shader
*shader
, nir_variable_mode modes
);
4117 bool nir_copy_prop(nir_shader
*shader
);
4119 bool nir_opt_copy_prop_vars(nir_shader
*shader
);
4121 bool nir_opt_cse(nir_shader
*shader
);
4123 bool nir_opt_dce(nir_shader
*shader
);
4125 bool nir_opt_dead_cf(nir_shader
*shader
);
4127 bool nir_opt_dead_write_vars(nir_shader
*shader
);
4129 bool nir_opt_deref_impl(nir_function_impl
*impl
);
4130 bool nir_opt_deref(nir_shader
*shader
);
4132 bool nir_opt_find_array_copies(nir_shader
*shader
);
4134 bool nir_opt_gcm(nir_shader
*shader
, bool value_number
);
4136 bool nir_opt_idiv_const(nir_shader
*shader
, unsigned min_bit_size
);
4138 bool nir_opt_if(nir_shader
*shader
, bool aggressive_last_continue
);
4140 bool nir_opt_intrinsics(nir_shader
*shader
);
4142 bool nir_opt_large_constants(nir_shader
*shader
,
4143 glsl_type_size_align_func size_align
,
4144 unsigned threshold
);
4146 bool nir_opt_loop_unroll(nir_shader
*shader
, nir_variable_mode indirect_mask
);
4149 nir_move_const_undef
= (1 << 0),
4150 nir_move_load_ubo
= (1 << 1),
4151 nir_move_load_input
= (1 << 2),
4152 nir_move_comparisons
= (1 << 3),
4155 bool nir_can_move_instr(nir_instr
*instr
, nir_move_options options
);
4157 bool nir_opt_sink(nir_shader
*shader
, nir_move_options options
);
4159 bool nir_opt_move(nir_shader
*shader
, nir_move_options options
);
4161 bool nir_opt_peephole_select(nir_shader
*shader
, unsigned limit
,
4162 bool indirect_load_ok
, bool expensive_alu_ok
);
4164 bool nir_opt_rematerialize_compares(nir_shader
*shader
);
4166 bool nir_opt_remove_phis(nir_shader
*shader
);
4167 bool nir_opt_remove_phis_block(nir_block
*block
);
4169 bool nir_opt_shrink_load(nir_shader
*shader
);
4171 bool nir_opt_trivial_continues(nir_shader
*shader
);
4173 bool nir_opt_undef(nir_shader
*shader
);
4175 bool nir_opt_vectorize(nir_shader
*shader
);
4177 bool nir_opt_conditional_discard(nir_shader
*shader
);
4179 void nir_strip(nir_shader
*shader
);
4181 void nir_sweep(nir_shader
*shader
);
4183 void nir_remap_dual_slot_attributes(nir_shader
*shader
,
4184 uint64_t *dual_slot_inputs
);
4185 uint64_t nir_get_single_slot_attribs_mask(uint64_t attribs
, uint64_t dual_slot
);
4187 nir_intrinsic_op
nir_intrinsic_from_system_value(gl_system_value val
);
4188 gl_system_value
nir_system_value_from_intrinsic(nir_intrinsic_op intrin
);
4191 nir_variable_is_in_ubo(const nir_variable
*var
)
4193 return (var
->data
.mode
== nir_var_mem_ubo
&&
4194 var
->interface_type
!= NULL
);
4198 nir_variable_is_in_ssbo(const nir_variable
*var
)
4200 return (var
->data
.mode
== nir_var_mem_ssbo
&&
4201 var
->interface_type
!= NULL
);
4205 nir_variable_is_in_block(const nir_variable
*var
)
4207 return nir_variable_is_in_ubo(var
) || nir_variable_is_in_ssbo(var
);