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/bitset.h"
38 #include "util/macros.h"
39 #include "compiler/nir_types.h"
40 #include "compiler/shader_enums.h"
41 #include "compiler/shader_info.h"
45 #include "util/debug.h"
48 #include "nir_opcodes.h"
50 #if defined(_WIN32) && !defined(snprintf)
51 #define snprintf _snprintf
59 struct gl_shader_program
;
62 #define NIR_TRUE (~0u)
64 /** Defines a cast function
66 * This macro defines a cast function from in_type to out_type where
67 * out_type is some structure type that contains a field of type out_type.
69 * Note that you have to be a bit careful as the generated cast function
72 #define NIR_DEFINE_CAST(name, in_type, out_type, field, \
73 type_field, type_value) \
74 static inline out_type * \
75 name(const in_type *parent) \
77 assert(parent && parent->type_field == type_value); \
78 return exec_node_data(out_type, parent, field); \
87 * Description of built-in state associated with a uniform
89 * \sa nir_variable::state_slots
97 nir_var_shader_in
= (1 << 0),
98 nir_var_shader_out
= (1 << 1),
99 nir_var_global
= (1 << 2),
100 nir_var_local
= (1 << 3),
101 nir_var_uniform
= (1 << 4),
102 nir_var_shader_storage
= (1 << 5),
103 nir_var_system_value
= (1 << 6),
104 nir_var_param
= (1 << 7),
105 nir_var_shared
= (1 << 8),
123 typedef struct nir_constant
{
125 * Value of the constant.
127 * The field used to back the values supplied by the constant is determined
128 * by the type associated with the \c nir_variable. Constants may be
129 * scalars, vectors, or matrices.
131 nir_const_value values
[4];
133 /* we could get this from the var->type but makes clone *much* easier to
134 * not have to care about the type.
136 unsigned num_elements
;
138 /* Array elements / Structure Fields */
139 struct nir_constant
**elements
;
143 * \brief Layout qualifiers for gl_FragDepth.
145 * The AMD/ARB_conservative_depth extensions allow gl_FragDepth to be redeclared
146 * with a layout qualifier.
149 nir_depth_layout_none
, /**< No depth layout is specified. */
150 nir_depth_layout_any
,
151 nir_depth_layout_greater
,
152 nir_depth_layout_less
,
153 nir_depth_layout_unchanged
157 * Either a uniform, global variable, shader input, or shader output. Based on
158 * ir_variable - it should be easy to translate between the two.
161 typedef struct nir_variable
{
162 struct exec_node node
;
165 * Declared type of the variable
167 const struct glsl_type
*type
;
170 * Declared name of the variable
174 struct nir_variable_data
{
176 * Storage class of the variable.
178 * \sa nir_variable_mode
180 nir_variable_mode mode
;
183 * Is the variable read-only?
185 * This is set for variables declared as \c const, shader inputs,
188 unsigned read_only
:1;
192 unsigned invariant
:1;
195 * Interpolation mode for shader inputs / outputs
197 * \sa glsl_interp_mode
199 unsigned interpolation
:2;
202 * \name ARB_fragment_coord_conventions
205 unsigned origin_upper_left
:1;
206 unsigned pixel_center_integer
:1;
210 * If non-zero, then this variable may be packed along with other variables
211 * into a single varying slot, so this offset should be applied when
212 * accessing components. For example, an offset of 1 means that the x
213 * component of this variable is actually stored in component y of the
214 * location specified by \c location.
216 unsigned location_frac
:2;
219 * If true, this variable represents an array of scalars that should
220 * be tightly packed. In other words, consecutive array elements
221 * should be stored one component apart, rather than one slot apart.
226 * Whether this is a fragment shader output implicitly initialized with
227 * the previous contents of the specified render target at the
228 * framebuffer location corresponding to this shader invocation.
230 unsigned fb_fetch_output
:1;
233 * \brief Layout qualifier for gl_FragDepth.
235 * This is not equal to \c ir_depth_layout_none if and only if this
236 * variable is \c gl_FragDepth and a layout qualifier is specified.
238 nir_depth_layout depth_layout
;
241 * Storage location of the base of this variable
243 * The precise meaning of this field depends on the nature of the variable.
245 * - Vertex shader input: one of the values from \c gl_vert_attrib.
246 * - Vertex shader output: one of the values from \c gl_varying_slot.
247 * - Geometry shader input: one of the values from \c gl_varying_slot.
248 * - Geometry shader output: one of the values from \c gl_varying_slot.
249 * - Fragment shader input: one of the values from \c gl_varying_slot.
250 * - Fragment shader output: one of the values from \c gl_frag_result.
251 * - Uniforms: Per-stage uniform slot number for default uniform block.
252 * - Uniforms: Index within the uniform block definition for UBO members.
253 * - Non-UBO Uniforms: uniform slot number.
254 * - Other: This field is not currently used.
256 * If the variable is a uniform, shader input, or shader output, and the
257 * slot has not been assigned, the value will be -1.
262 * The actual location of the variable in the IR. Only valid for inputs
265 unsigned int driver_location
;
268 * output index for dual source blending.
273 * Descriptor set binding for sampler or UBO.
278 * Initial binding point for a sampler or UBO.
280 * For array types, this represents the binding point for the first element.
285 * Location an atomic counter is stored at.
290 * ARB_shader_image_load_store qualifiers.
293 bool read_only
; /**< "readonly" qualifier. */
294 bool write_only
; /**< "writeonly" qualifier. */
299 /** Image internal format if specified explicitly, otherwise GL_NONE. */
305 * Built-in state that backs this uniform
307 * Once set at variable creation, \c state_slots must remain invariant.
308 * This is because, ideally, this array would be shared by all clones of
309 * this variable in the IR tree. In other words, we'd really like for it
310 * to be a fly-weight.
312 * If the variable is not a uniform, \c num_state_slots will be zero and
313 * \c state_slots will be \c NULL.
316 unsigned num_state_slots
; /**< Number of state slots used */
317 nir_state_slot
*state_slots
; /**< State descriptors. */
321 * Constant expression assigned in the initializer of the variable
323 * This field should only be used temporarily by creators of NIR shaders
324 * and then lower_constant_initializers can be used to get rid of them.
325 * Most of the rest of NIR ignores this field or asserts that it's NULL.
327 nir_constant
*constant_initializer
;
330 * For variables that are in an interface block or are an instance of an
331 * interface block, this is the \c GLSL_TYPE_INTERFACE type for that block.
333 * \sa ir_variable::location
335 const struct glsl_type
*interface_type
;
338 #define nir_foreach_variable(var, var_list) \
339 foreach_list_typed(nir_variable, var, node, var_list)
341 #define nir_foreach_variable_safe(var, var_list) \
342 foreach_list_typed_safe(nir_variable, var, node, var_list)
345 nir_variable_is_global(const nir_variable
*var
)
347 return var
->data
.mode
!= nir_var_local
&& var
->data
.mode
!= nir_var_param
;
350 typedef struct nir_register
{
351 struct exec_node node
;
353 unsigned num_components
; /** < number of vector components */
354 unsigned num_array_elems
; /** < size of array (0 for no array) */
356 /* The bit-size of each channel; must be one of 8, 16, 32, or 64 */
359 /** generic register index. */
362 /** only for debug purposes, can be NULL */
365 /** whether this register is local (per-function) or global (per-shader) */
369 * If this flag is set to true, then accessing channels >= num_components
370 * is well-defined, and simply spills over to the next array element. This
371 * is useful for backends that can do per-component accessing, in
372 * particular scalar backends. By setting this flag and making
373 * num_components equal to 1, structures can be packed tightly into
374 * registers and then registers can be accessed per-component to get to
375 * each structure member, even if it crosses vec4 boundaries.
379 /** set of nir_srcs where this register is used (read from) */
380 struct list_head uses
;
382 /** set of nir_dests where this register is defined (written to) */
383 struct list_head defs
;
385 /** set of nir_ifs where this register is used as a condition */
386 struct list_head if_uses
;
389 #define nir_foreach_register(reg, reg_list) \
390 foreach_list_typed(nir_register, reg, node, reg_list)
391 #define nir_foreach_register_safe(reg, reg_list) \
392 foreach_list_typed_safe(nir_register, reg, node, reg_list)
398 nir_instr_type_intrinsic
,
399 nir_instr_type_load_const
,
401 nir_instr_type_ssa_undef
,
403 nir_instr_type_parallel_copy
,
406 typedef struct nir_instr
{
407 struct exec_node node
;
409 struct nir_block
*block
;
411 /** generic instruction index. */
414 /* A temporary for optimization and analysis passes to use for storing
415 * flags. For instance, DCE uses this to store the "dead/live" info.
420 static inline nir_instr
*
421 nir_instr_next(nir_instr
*instr
)
423 struct exec_node
*next
= exec_node_get_next(&instr
->node
);
424 if (exec_node_is_tail_sentinel(next
))
427 return exec_node_data(nir_instr
, next
, node
);
430 static inline nir_instr
*
431 nir_instr_prev(nir_instr
*instr
)
433 struct exec_node
*prev
= exec_node_get_prev(&instr
->node
);
434 if (exec_node_is_head_sentinel(prev
))
437 return exec_node_data(nir_instr
, prev
, node
);
441 nir_instr_is_first(nir_instr
*instr
)
443 return exec_node_is_head_sentinel(exec_node_get_prev(&instr
->node
));
447 nir_instr_is_last(nir_instr
*instr
)
449 return exec_node_is_tail_sentinel(exec_node_get_next(&instr
->node
));
452 typedef struct nir_ssa_def
{
453 /** for debugging only, can be NULL */
456 /** generic SSA definition index. */
459 /** Index into the live_in and live_out bitfields */
462 nir_instr
*parent_instr
;
464 /** set of nir_instrs where this register is used (read from) */
465 struct list_head uses
;
467 /** set of nir_ifs where this register is used as a condition */
468 struct list_head if_uses
;
470 uint8_t num_components
;
472 /* The bit-size of each channel; must be one of 8, 16, 32, or 64 */
480 struct nir_src
*indirect
; /** < NULL for no indirect offset */
481 unsigned base_offset
;
483 /* TODO use-def chain goes here */
487 nir_instr
*parent_instr
;
488 struct list_head def_link
;
491 struct nir_src
*indirect
; /** < NULL for no indirect offset */
492 unsigned base_offset
;
494 /* TODO def-use chain goes here */
499 typedef struct nir_src
{
501 nir_instr
*parent_instr
;
502 struct nir_if
*parent_if
;
505 struct list_head use_link
;
515 static inline nir_src
518 nir_src src
= { { NULL
} };
522 #define NIR_SRC_INIT nir_src_init()
524 #define nir_foreach_use(src, reg_or_ssa_def) \
525 list_for_each_entry(nir_src, src, &(reg_or_ssa_def)->uses, use_link)
527 #define nir_foreach_use_safe(src, reg_or_ssa_def) \
528 list_for_each_entry_safe(nir_src, src, &(reg_or_ssa_def)->uses, use_link)
530 #define nir_foreach_if_use(src, reg_or_ssa_def) \
531 list_for_each_entry(nir_src, src, &(reg_or_ssa_def)->if_uses, use_link)
533 #define nir_foreach_if_use_safe(src, reg_or_ssa_def) \
534 list_for_each_entry_safe(nir_src, src, &(reg_or_ssa_def)->if_uses, use_link)
545 static inline nir_dest
548 nir_dest dest
= { { { NULL
} } };
552 #define NIR_DEST_INIT nir_dest_init()
554 #define nir_foreach_def(dest, reg) \
555 list_for_each_entry(nir_dest, dest, &(reg)->defs, reg.def_link)
557 #define nir_foreach_def_safe(dest, reg) \
558 list_for_each_entry_safe(nir_dest, dest, &(reg)->defs, reg.def_link)
560 static inline nir_src
561 nir_src_for_ssa(nir_ssa_def
*def
)
563 nir_src src
= NIR_SRC_INIT
;
571 static inline nir_src
572 nir_src_for_reg(nir_register
*reg
)
574 nir_src src
= NIR_SRC_INIT
;
578 src
.reg
.indirect
= NULL
;
579 src
.reg
.base_offset
= 0;
584 static inline nir_dest
585 nir_dest_for_reg(nir_register
*reg
)
587 nir_dest dest
= NIR_DEST_INIT
;
594 static inline unsigned
595 nir_src_bit_size(nir_src src
)
597 return src
.is_ssa
? src
.ssa
->bit_size
: src
.reg
.reg
->bit_size
;
600 static inline unsigned
601 nir_dest_bit_size(nir_dest dest
)
603 return dest
.is_ssa
? dest
.ssa
.bit_size
: dest
.reg
.reg
->bit_size
;
606 void nir_src_copy(nir_src
*dest
, const nir_src
*src
, void *instr_or_if
);
607 void nir_dest_copy(nir_dest
*dest
, const nir_dest
*src
, nir_instr
*instr
);
613 * \name input modifiers
617 * For inputs interpreted as floating point, flips the sign bit. For
618 * inputs interpreted as integers, performs the two's complement negation.
623 * Clears the sign bit for floating point values, and computes the integer
624 * absolute value for integers. Note that the negate modifier acts after
625 * the absolute value modifier, therefore if both are set then all inputs
626 * will become negative.
632 * For each input component, says which component of the register it is
633 * chosen from. Note that which elements of the swizzle are used and which
634 * are ignored are based on the write mask for most opcodes - for example,
635 * a statement like "foo.xzw = bar.zyx" would have a writemask of 1101b and
636 * a swizzle of {2, x, 1, 0} where x means "don't care."
645 * \name saturate output modifier
647 * Only valid for opcodes that output floating-point numbers. Clamps the
648 * output to between 0.0 and 1.0 inclusive.
653 unsigned write_mask
: 4; /* ignored if dest.is_ssa is true */
657 nir_type_invalid
= 0, /* Not a valid type */
662 nir_type_bool32
= 32 | nir_type_bool
,
663 nir_type_int8
= 8 | nir_type_int
,
664 nir_type_int16
= 16 | nir_type_int
,
665 nir_type_int32
= 32 | nir_type_int
,
666 nir_type_int64
= 64 | nir_type_int
,
667 nir_type_uint8
= 8 | nir_type_uint
,
668 nir_type_uint16
= 16 | nir_type_uint
,
669 nir_type_uint32
= 32 | nir_type_uint
,
670 nir_type_uint64
= 64 | nir_type_uint
,
671 nir_type_float16
= 16 | nir_type_float
,
672 nir_type_float32
= 32 | nir_type_float
,
673 nir_type_float64
= 64 | nir_type_float
,
676 #define NIR_ALU_TYPE_SIZE_MASK 0xfffffff8
677 #define NIR_ALU_TYPE_BASE_TYPE_MASK 0x00000007
679 static inline unsigned
680 nir_alu_type_get_type_size(nir_alu_type type
)
682 return type
& NIR_ALU_TYPE_SIZE_MASK
;
685 static inline unsigned
686 nir_alu_type_get_base_type(nir_alu_type type
)
688 return type
& NIR_ALU_TYPE_BASE_TYPE_MASK
;
691 static inline nir_alu_type
692 nir_get_nir_type_for_glsl_base_type(enum glsl_base_type base_type
)
696 return nir_type_bool32
;
699 return nir_type_uint32
;
702 return nir_type_int32
;
704 case GLSL_TYPE_UINT64
:
705 return nir_type_uint64
;
707 case GLSL_TYPE_INT64
:
708 return nir_type_int64
;
710 case GLSL_TYPE_FLOAT
:
711 return nir_type_float32
;
713 case GLSL_TYPE_DOUBLE
:
714 return nir_type_float64
;
717 unreachable("unknown type");
721 static inline nir_alu_type
722 nir_get_nir_type_for_glsl_type(const struct glsl_type
*type
)
724 return nir_get_nir_type_for_glsl_base_type(glsl_get_base_type(type
));
727 nir_op
nir_type_conversion_op(nir_alu_type src
, nir_alu_type dst
);
730 NIR_OP_IS_COMMUTATIVE
= (1 << 0),
731 NIR_OP_IS_ASSOCIATIVE
= (1 << 1),
732 } nir_op_algebraic_property
;
740 * The number of components in the output
742 * If non-zero, this is the size of the output and input sizes are
743 * explicitly given; swizzle and writemask are still in effect, but if
744 * the output component is masked out, then the input component may
747 * If zero, the opcode acts in the standard, per-component manner; the
748 * operation is performed on each component (except the ones that are
749 * masked out) with the input being taken from the input swizzle for
752 * The size of some of the inputs may be given (i.e. non-zero) even
753 * though output_size is zero; in that case, the inputs with a zero
754 * size act per-component, while the inputs with non-zero size don't.
756 unsigned output_size
;
759 * The type of vector that the instruction outputs. Note that the
760 * staurate modifier is only allowed on outputs with the float type.
763 nir_alu_type output_type
;
766 * The number of components in each input
768 unsigned input_sizes
[4];
771 * The type of vector that each input takes. Note that negate and
772 * absolute value are only allowed on inputs with int or float type and
773 * behave differently on the two.
775 nir_alu_type input_types
[4];
777 nir_op_algebraic_property algebraic_properties
;
780 extern const nir_op_info nir_op_infos
[nir_num_opcodes
];
782 typedef struct nir_alu_instr
{
786 /** Indicates that this ALU instruction generates an exact value
788 * This is kind of a mixture of GLSL "precise" and "invariant" and not
789 * really equivalent to either. This indicates that the value generated by
790 * this operation is high-precision and any code transformations that touch
791 * it must ensure that the resulting value is bit-for-bit identical to the
800 void nir_alu_src_copy(nir_alu_src
*dest
, const nir_alu_src
*src
,
801 nir_alu_instr
*instr
);
802 void nir_alu_dest_copy(nir_alu_dest
*dest
, const nir_alu_dest
*src
,
803 nir_alu_instr
*instr
);
805 /* is this source channel used? */
807 nir_alu_instr_channel_used(nir_alu_instr
*instr
, unsigned src
, unsigned channel
)
809 if (nir_op_infos
[instr
->op
].input_sizes
[src
] > 0)
810 return channel
< nir_op_infos
[instr
->op
].input_sizes
[src
];
812 return (instr
->dest
.write_mask
>> channel
) & 1;
816 * For instructions whose destinations are SSA, get the number of channels
819 static inline unsigned
820 nir_ssa_alu_instr_src_components(const nir_alu_instr
*instr
, unsigned src
)
822 assert(instr
->dest
.dest
.is_ssa
);
824 if (nir_op_infos
[instr
->op
].input_sizes
[src
] > 0)
825 return nir_op_infos
[instr
->op
].input_sizes
[src
];
827 return instr
->dest
.dest
.ssa
.num_components
;
830 bool nir_alu_srcs_equal(const nir_alu_instr
*alu1
, const nir_alu_instr
*alu2
,
831 unsigned src1
, unsigned src2
);
835 nir_deref_type_array
,
836 nir_deref_type_struct
839 typedef struct nir_deref
{
840 nir_deref_type deref_type
;
841 struct nir_deref
*child
;
842 const struct glsl_type
*type
;
851 /* This enum describes how the array is referenced. If the deref is
852 * direct then the base_offset is used. If the deref is indirect then
853 * offset is given by base_offset + indirect. If the deref is a wildcard
854 * then the deref refers to all of the elements of the array at the same
855 * time. Wildcard dereferences are only ever allowed in copy_var
856 * intrinsics and the source and destination derefs must have matching
860 nir_deref_array_type_direct
,
861 nir_deref_array_type_indirect
,
862 nir_deref_array_type_wildcard
,
863 } nir_deref_array_type
;
868 nir_deref_array_type deref_array_type
;
869 unsigned base_offset
;
879 NIR_DEFINE_CAST(nir_deref_as_var
, nir_deref
, nir_deref_var
, deref
,
880 deref_type
, nir_deref_type_var
)
881 NIR_DEFINE_CAST(nir_deref_as_array
, nir_deref
, nir_deref_array
, deref
,
882 deref_type
, nir_deref_type_array
)
883 NIR_DEFINE_CAST(nir_deref_as_struct
, nir_deref
, nir_deref_struct
, deref
,
884 deref_type
, nir_deref_type_struct
)
886 /* Returns the last deref in the chain. */
887 static inline nir_deref
*
888 nir_deref_tail(nir_deref
*deref
)
891 deref
= deref
->child
;
899 nir_deref_var
**params
;
900 nir_deref_var
*return_deref
;
902 struct nir_function
*callee
;
905 #define INTRINSIC(name, num_srcs, src_components, has_dest, dest_components, \
906 num_variables, num_indices, idx0, idx1, idx2, flags) \
907 nir_intrinsic_##name,
909 #define LAST_INTRINSIC(name) nir_last_intrinsic = nir_intrinsic_##name,
912 #include "nir_intrinsics.h"
913 nir_num_intrinsics
= nir_last_intrinsic
+ 1
916 #define NIR_INTRINSIC_MAX_CONST_INDEX 3
918 /** Represents an intrinsic
920 * An intrinsic is an instruction type for handling things that are
921 * more-or-less regular operations but don't just consume and produce SSA
922 * values like ALU operations do. Intrinsics are not for things that have
923 * special semantic meaning such as phi nodes and parallel copies.
924 * Examples of intrinsics include variable load/store operations, system
925 * value loads, and the like. Even though texturing more-or-less falls
926 * under this category, texturing is its own instruction type because
927 * trying to represent texturing with intrinsics would lead to a
928 * combinatorial explosion of intrinsic opcodes.
930 * By having a single instruction type for handling a lot of different
931 * cases, optimization passes can look for intrinsics and, for the most
932 * part, completely ignore them. Each intrinsic type also has a few
933 * possible flags that govern whether or not they can be reordered or
934 * eliminated. That way passes like dead code elimination can still work
935 * on intrisics without understanding the meaning of each.
937 * Each intrinsic has some number of constant indices, some number of
938 * variables, and some number of sources. What these sources, variables,
939 * and indices mean depends on the intrinsic and is documented with the
940 * intrinsic declaration in nir_intrinsics.h. Intrinsics and texture
941 * instructions are the only types of instruction that can operate on
947 nir_intrinsic_op intrinsic
;
951 /** number of components if this is a vectorized intrinsic
953 * Similarly to ALU operations, some intrinsics are vectorized.
954 * An intrinsic is vectorized if nir_intrinsic_infos.dest_components == 0.
955 * For vectorized intrinsics, the num_components field specifies the
956 * number of destination components and the number of source components
957 * for all sources with nir_intrinsic_infos.src_components[i] == 0.
959 uint8_t num_components
;
961 int const_index
[NIR_INTRINSIC_MAX_CONST_INDEX
];
963 nir_deref_var
*variables
[2];
966 } nir_intrinsic_instr
;
969 * \name NIR intrinsics semantic flags
971 * information about what the compiler can do with the intrinsics.
973 * \sa nir_intrinsic_info::flags
977 * whether the intrinsic can be safely eliminated if none of its output
978 * value is not being used.
980 NIR_INTRINSIC_CAN_ELIMINATE
= (1 << 0),
983 * Whether the intrinsic can be reordered with respect to any other
984 * intrinsic, i.e. whether the only reordering dependencies of the
985 * intrinsic are due to the register reads/writes.
987 NIR_INTRINSIC_CAN_REORDER
= (1 << 1),
988 } nir_intrinsic_semantic_flag
;
991 * \name NIR intrinsics const-index flag
993 * Indicates the usage of a const_index slot.
995 * \sa nir_intrinsic_info::index_map
999 * Generally instructions that take a offset src argument, can encode
1000 * a constant 'base' value which is added to the offset.
1002 NIR_INTRINSIC_BASE
= 1,
1005 * For store instructions, a writemask for the store.
1007 NIR_INTRINSIC_WRMASK
= 2,
1010 * The stream-id for GS emit_vertex/end_primitive intrinsics.
1012 NIR_INTRINSIC_STREAM_ID
= 3,
1015 * The clip-plane id for load_user_clip_plane intrinsic.
1017 NIR_INTRINSIC_UCP_ID
= 4,
1020 * The amount of data, starting from BASE, that this instruction may
1021 * access. This is used to provide bounds if the offset is not constant.
1023 NIR_INTRINSIC_RANGE
= 5,
1026 * The Vulkan descriptor set for vulkan_resource_index intrinsic.
1028 NIR_INTRINSIC_DESC_SET
= 6,
1031 * The Vulkan descriptor set binding for vulkan_resource_index intrinsic.
1033 NIR_INTRINSIC_BINDING
= 7,
1038 NIR_INTRINSIC_COMPONENT
= 8,
1041 * Interpolation mode (only meaningful for FS inputs).
1043 NIR_INTRINSIC_INTERP_MODE
= 9,
1045 NIR_INTRINSIC_NUM_INDEX_FLAGS
,
1047 } nir_intrinsic_index_flag
;
1049 #define NIR_INTRINSIC_MAX_INPUTS 4
1054 unsigned num_srcs
; /** < number of register/SSA inputs */
1056 /** number of components of each input register
1058 * If this value is 0, the number of components is given by the
1059 * num_components field of nir_intrinsic_instr.
1061 unsigned src_components
[NIR_INTRINSIC_MAX_INPUTS
];
1065 /** number of components of the output register
1067 * If this value is 0, the number of components is given by the
1068 * num_components field of nir_intrinsic_instr.
1070 unsigned dest_components
;
1072 /** the number of inputs/outputs that are variables */
1073 unsigned num_variables
;
1075 /** the number of constant indices used by the intrinsic */
1076 unsigned num_indices
;
1078 /** indicates the usage of intr->const_index[n] */
1079 unsigned index_map
[NIR_INTRINSIC_NUM_INDEX_FLAGS
];
1081 /** semantic flags for calls to this intrinsic */
1082 nir_intrinsic_semantic_flag flags
;
1083 } nir_intrinsic_info
;
1085 extern const nir_intrinsic_info nir_intrinsic_infos
[nir_num_intrinsics
];
1088 #define INTRINSIC_IDX_ACCESSORS(name, flag, type) \
1089 static inline type \
1090 nir_intrinsic_##name(nir_intrinsic_instr *instr) \
1092 const nir_intrinsic_info *info = &nir_intrinsic_infos[instr->intrinsic]; \
1093 assert(info->index_map[NIR_INTRINSIC_##flag] > 0); \
1094 return instr->const_index[info->index_map[NIR_INTRINSIC_##flag] - 1]; \
1096 static inline void \
1097 nir_intrinsic_set_##name(nir_intrinsic_instr *instr, type val) \
1099 const nir_intrinsic_info *info = &nir_intrinsic_infos[instr->intrinsic]; \
1100 assert(info->index_map[NIR_INTRINSIC_##flag] > 0); \
1101 instr->const_index[info->index_map[NIR_INTRINSIC_##flag] - 1] = val; \
1104 INTRINSIC_IDX_ACCESSORS(write_mask
, WRMASK
, unsigned)
1105 INTRINSIC_IDX_ACCESSORS(base
, BASE
, int)
1106 INTRINSIC_IDX_ACCESSORS(stream_id
, STREAM_ID
, unsigned)
1107 INTRINSIC_IDX_ACCESSORS(ucp_id
, UCP_ID
, unsigned)
1108 INTRINSIC_IDX_ACCESSORS(range
, RANGE
, unsigned)
1109 INTRINSIC_IDX_ACCESSORS(desc_set
, DESC_SET
, unsigned)
1110 INTRINSIC_IDX_ACCESSORS(binding
, BINDING
, unsigned)
1111 INTRINSIC_IDX_ACCESSORS(component
, COMPONENT
, unsigned)
1112 INTRINSIC_IDX_ACCESSORS(interp_mode
, INTERP_MODE
, unsigned)
1115 * \group texture information
1117 * This gives semantic information about textures which is useful to the
1118 * frontend, the backend, and lowering passes, but not the optimizer.
1123 nir_tex_src_projector
,
1124 nir_tex_src_comparator
, /* shadow comparator */
1128 nir_tex_src_ms_index
, /* MSAA sample index */
1129 nir_tex_src_ms_mcs
, /* MSAA compression value */
1132 nir_tex_src_texture_offset
, /* < dynamically uniform indirect offset */
1133 nir_tex_src_sampler_offset
, /* < dynamically uniform indirect offset */
1134 nir_tex_src_plane
, /* < selects plane for planar textures */
1135 nir_num_tex_src_types
1140 nir_tex_src_type src_type
;
1144 nir_texop_tex
, /**< Regular texture look-up */
1145 nir_texop_txb
, /**< Texture look-up with LOD bias */
1146 nir_texop_txl
, /**< Texture look-up with explicit LOD */
1147 nir_texop_txd
, /**< Texture look-up with partial derivatvies */
1148 nir_texop_txf
, /**< Texel fetch with explicit LOD */
1149 nir_texop_txf_ms
, /**< Multisample texture fetch */
1150 nir_texop_txf_ms_mcs
, /**< Multisample compression value fetch */
1151 nir_texop_txs
, /**< Texture size */
1152 nir_texop_lod
, /**< Texture lod query */
1153 nir_texop_tg4
, /**< Texture gather */
1154 nir_texop_query_levels
, /**< Texture levels query */
1155 nir_texop_texture_samples
, /**< Texture samples query */
1156 nir_texop_samples_identical
, /**< Query whether all samples are definitely
1164 enum glsl_sampler_dim sampler_dim
;
1165 nir_alu_type dest_type
;
1170 unsigned num_srcs
, coord_components
;
1171 bool is_array
, is_shadow
;
1174 * If is_shadow is true, whether this is the old-style shadow that outputs 4
1175 * components or the new-style shadow that outputs 1 component.
1177 bool is_new_style_shadow
;
1179 /* gather component selector */
1180 unsigned component
: 2;
1182 /** The texture index
1184 * If this texture instruction has a nir_tex_src_texture_offset source,
1185 * then the texture index is given by texture_index + texture_offset.
1187 unsigned texture_index
;
1189 /** The size of the texture array or 0 if it's not an array */
1190 unsigned texture_array_size
;
1192 /** The texture deref
1194 * If this is null, use texture_index instead.
1196 nir_deref_var
*texture
;
1198 /** The sampler index
1200 * The following operations do not require a sampler and, as such, this
1201 * field should be ignored:
1203 * - nir_texop_txf_ms
1207 * - nir_texop_query_levels
1208 * - nir_texop_texture_samples
1209 * - nir_texop_samples_identical
1211 * If this texture instruction has a nir_tex_src_sampler_offset source,
1212 * then the sampler index is given by sampler_index + sampler_offset.
1214 unsigned sampler_index
;
1216 /** The sampler deref
1218 * If this is null, use sampler_index instead.
1220 nir_deref_var
*sampler
;
1223 static inline unsigned
1224 nir_tex_instr_dest_size(nir_tex_instr
*instr
)
1226 switch (instr
->op
) {
1227 case nir_texop_txs
: {
1229 switch (instr
->sampler_dim
) {
1230 case GLSL_SAMPLER_DIM_1D
:
1231 case GLSL_SAMPLER_DIM_BUF
:
1234 case GLSL_SAMPLER_DIM_2D
:
1235 case GLSL_SAMPLER_DIM_CUBE
:
1236 case GLSL_SAMPLER_DIM_MS
:
1237 case GLSL_SAMPLER_DIM_RECT
:
1238 case GLSL_SAMPLER_DIM_EXTERNAL
:
1239 case GLSL_SAMPLER_DIM_SUBPASS
:
1242 case GLSL_SAMPLER_DIM_3D
:
1246 unreachable("not reached");
1248 if (instr
->is_array
)
1256 case nir_texop_texture_samples
:
1257 case nir_texop_query_levels
:
1258 case nir_texop_samples_identical
:
1262 if (instr
->is_shadow
&& instr
->is_new_style_shadow
)
1269 /* Returns true if this texture operation queries something about the texture
1270 * rather than actually sampling it.
1273 nir_tex_instr_is_query(nir_tex_instr
*instr
)
1275 switch (instr
->op
) {
1278 case nir_texop_texture_samples
:
1279 case nir_texop_query_levels
:
1280 case nir_texop_txf_ms_mcs
:
1287 case nir_texop_txf_ms
:
1291 unreachable("Invalid texture opcode");
1295 static inline nir_alu_type
1296 nir_tex_instr_src_type(nir_tex_instr
*instr
, unsigned src
)
1298 switch (instr
->src
[src
].src_type
) {
1299 case nir_tex_src_coord
:
1300 switch (instr
->op
) {
1302 case nir_texop_txf_ms
:
1303 case nir_texop_txf_ms_mcs
:
1304 case nir_texop_samples_identical
:
1305 return nir_type_int
;
1308 return nir_type_float
;
1311 case nir_tex_src_lod
:
1312 switch (instr
->op
) {
1315 return nir_type_int
;
1318 return nir_type_float
;
1321 case nir_tex_src_projector
:
1322 case nir_tex_src_comparator
:
1323 case nir_tex_src_bias
:
1324 case nir_tex_src_ddx
:
1325 case nir_tex_src_ddy
:
1326 return nir_type_float
;
1328 case nir_tex_src_offset
:
1329 case nir_tex_src_ms_index
:
1330 case nir_tex_src_texture_offset
:
1331 case nir_tex_src_sampler_offset
:
1332 return nir_type_int
;
1335 unreachable("Invalid texture source type");
1339 static inline unsigned
1340 nir_tex_instr_src_size(nir_tex_instr
*instr
, unsigned src
)
1342 if (instr
->src
[src
].src_type
== nir_tex_src_coord
)
1343 return instr
->coord_components
;
1345 /* The MCS value is expected to be a vec4 returned by a txf_ms_mcs */
1346 if (instr
->src
[src
].src_type
== nir_tex_src_ms_mcs
)
1349 if (instr
->src
[src
].src_type
== nir_tex_src_offset
||
1350 instr
->src
[src
].src_type
== nir_tex_src_ddx
||
1351 instr
->src
[src
].src_type
== nir_tex_src_ddy
) {
1352 if (instr
->is_array
)
1353 return instr
->coord_components
- 1;
1355 return instr
->coord_components
;
1362 nir_tex_instr_src_index(nir_tex_instr
*instr
, nir_tex_src_type type
)
1364 for (unsigned i
= 0; i
< instr
->num_srcs
; i
++)
1365 if (instr
->src
[i
].src_type
== type
)
1371 void nir_tex_instr_remove_src(nir_tex_instr
*tex
, unsigned src_idx
);
1376 nir_const_value value
;
1379 } nir_load_const_instr
;
1392 /* creates a new SSA variable in an undefined state */
1397 } nir_ssa_undef_instr
;
1400 struct exec_node node
;
1402 /* The predecessor block corresponding to this source */
1403 struct nir_block
*pred
;
1408 #define nir_foreach_phi_src(phi_src, phi) \
1409 foreach_list_typed(nir_phi_src, phi_src, node, &(phi)->srcs)
1410 #define nir_foreach_phi_src_safe(phi_src, phi) \
1411 foreach_list_typed_safe(nir_phi_src, phi_src, node, &(phi)->srcs)
1416 struct exec_list srcs
; /** < list of nir_phi_src */
1422 struct exec_node node
;
1425 } nir_parallel_copy_entry
;
1427 #define nir_foreach_parallel_copy_entry(entry, pcopy) \
1428 foreach_list_typed(nir_parallel_copy_entry, entry, node, &(pcopy)->entries)
1433 /* A list of nir_parallel_copy_entrys. The sources of all of the
1434 * entries are copied to the corresponding destinations "in parallel".
1435 * In other words, if we have two entries: a -> b and b -> a, the values
1438 struct exec_list entries
;
1439 } nir_parallel_copy_instr
;
1441 NIR_DEFINE_CAST(nir_instr_as_alu
, nir_instr
, nir_alu_instr
, instr
,
1442 type
, nir_instr_type_alu
)
1443 NIR_DEFINE_CAST(nir_instr_as_call
, nir_instr
, nir_call_instr
, instr
,
1444 type
, nir_instr_type_call
)
1445 NIR_DEFINE_CAST(nir_instr_as_jump
, nir_instr
, nir_jump_instr
, instr
,
1446 type
, nir_instr_type_jump
)
1447 NIR_DEFINE_CAST(nir_instr_as_tex
, nir_instr
, nir_tex_instr
, instr
,
1448 type
, nir_instr_type_tex
)
1449 NIR_DEFINE_CAST(nir_instr_as_intrinsic
, nir_instr
, nir_intrinsic_instr
, instr
,
1450 type
, nir_instr_type_intrinsic
)
1451 NIR_DEFINE_CAST(nir_instr_as_load_const
, nir_instr
, nir_load_const_instr
, instr
,
1452 type
, nir_instr_type_load_const
)
1453 NIR_DEFINE_CAST(nir_instr_as_ssa_undef
, nir_instr
, nir_ssa_undef_instr
, instr
,
1454 type
, nir_instr_type_ssa_undef
)
1455 NIR_DEFINE_CAST(nir_instr_as_phi
, nir_instr
, nir_phi_instr
, instr
,
1456 type
, nir_instr_type_phi
)
1457 NIR_DEFINE_CAST(nir_instr_as_parallel_copy
, nir_instr
,
1458 nir_parallel_copy_instr
, instr
,
1459 type
, nir_instr_type_parallel_copy
)
1464 * Control flow consists of a tree of control flow nodes, which include
1465 * if-statements and loops. The leaves of the tree are basic blocks, lists of
1466 * instructions that always run start-to-finish. Each basic block also keeps
1467 * track of its successors (blocks which may run immediately after the current
1468 * block) and predecessors (blocks which could have run immediately before the
1469 * current block). Each function also has a start block and an end block which
1470 * all return statements point to (which is always empty). Together, all the
1471 * blocks with their predecessors and successors make up the control flow
1472 * graph (CFG) of the function. There are helpers that modify the tree of
1473 * control flow nodes while modifying the CFG appropriately; these should be
1474 * used instead of modifying the tree directly.
1481 nir_cf_node_function
1484 typedef struct nir_cf_node
{
1485 struct exec_node node
;
1486 nir_cf_node_type type
;
1487 struct nir_cf_node
*parent
;
1490 typedef struct nir_block
{
1491 nir_cf_node cf_node
;
1493 struct exec_list instr_list
; /** < list of nir_instr */
1495 /** generic block index; generated by nir_index_blocks */
1499 * Each block can only have up to 2 successors, so we put them in a simple
1500 * array - no need for anything more complicated.
1502 struct nir_block
*successors
[2];
1504 /* Set of nir_block predecessors in the CFG */
1505 struct set
*predecessors
;
1508 * this node's immediate dominator in the dominance tree - set to NULL for
1511 struct nir_block
*imm_dom
;
1513 /* This node's children in the dominance tree */
1514 unsigned num_dom_children
;
1515 struct nir_block
**dom_children
;
1517 /* Set of nir_blocks on the dominance frontier of this block */
1518 struct set
*dom_frontier
;
1521 * These two indices have the property that dom_{pre,post}_index for each
1522 * child of this block in the dominance tree will always be between
1523 * dom_pre_index and dom_post_index for this block, which makes testing if
1524 * a given block is dominated by another block an O(1) operation.
1526 unsigned dom_pre_index
, dom_post_index
;
1528 /* live in and out for this block; used for liveness analysis */
1529 BITSET_WORD
*live_in
;
1530 BITSET_WORD
*live_out
;
1533 static inline nir_instr
*
1534 nir_block_first_instr(nir_block
*block
)
1536 struct exec_node
*head
= exec_list_get_head(&block
->instr_list
);
1537 return exec_node_data(nir_instr
, head
, node
);
1540 static inline nir_instr
*
1541 nir_block_last_instr(nir_block
*block
)
1543 struct exec_node
*tail
= exec_list_get_tail(&block
->instr_list
);
1544 return exec_node_data(nir_instr
, tail
, node
);
1547 #define nir_foreach_instr(instr, block) \
1548 foreach_list_typed(nir_instr, instr, node, &(block)->instr_list)
1549 #define nir_foreach_instr_reverse(instr, block) \
1550 foreach_list_typed_reverse(nir_instr, instr, node, &(block)->instr_list)
1551 #define nir_foreach_instr_safe(instr, block) \
1552 foreach_list_typed_safe(nir_instr, instr, node, &(block)->instr_list)
1553 #define nir_foreach_instr_reverse_safe(instr, block) \
1554 foreach_list_typed_reverse_safe(nir_instr, instr, node, &(block)->instr_list)
1556 typedef struct nir_if
{
1557 nir_cf_node cf_node
;
1560 struct exec_list then_list
; /** < list of nir_cf_node */
1561 struct exec_list else_list
; /** < list of nir_cf_node */
1567 nir_instr
*conditional_instr
;
1569 nir_block
*break_block
;
1570 nir_block
*continue_from_block
;
1572 bool continue_from_then
;
1574 struct list_head loop_terminator_link
;
1575 } nir_loop_terminator
;
1578 /* Number of instructions in the loop */
1579 unsigned num_instructions
;
1581 /* How many times the loop is run (if known) */
1582 unsigned trip_count
;
1583 bool is_trip_count_known
;
1585 /* Unroll the loop regardless of its size */
1588 nir_loop_terminator
*limiting_terminator
;
1590 /* A list of loop_terminators terminating this loop. */
1591 struct list_head loop_terminator_list
;
1595 nir_cf_node cf_node
;
1597 struct exec_list body
; /** < list of nir_cf_node */
1599 nir_loop_info
*info
;
1603 * Various bits of metadata that can may be created or required by
1604 * optimization and analysis passes
1607 nir_metadata_none
= 0x0,
1608 nir_metadata_block_index
= 0x1,
1609 nir_metadata_dominance
= 0x2,
1610 nir_metadata_live_ssa_defs
= 0x4,
1611 nir_metadata_not_properly_reset
= 0x8,
1612 nir_metadata_loop_analysis
= 0x10,
1616 nir_cf_node cf_node
;
1618 /** pointer to the function of which this is an implementation */
1619 struct nir_function
*function
;
1621 struct exec_list body
; /** < list of nir_cf_node */
1623 nir_block
*end_block
;
1625 /** list for all local variables in the function */
1626 struct exec_list locals
;
1628 /** array of variables used as parameters */
1629 unsigned num_params
;
1630 nir_variable
**params
;
1632 /** variable used to hold the result of the function */
1633 nir_variable
*return_var
;
1635 /** list of local registers in the function */
1636 struct exec_list registers
;
1638 /** next available local register index */
1641 /** next available SSA value index */
1644 /* total number of basic blocks, only valid when block_index_dirty = false */
1645 unsigned num_blocks
;
1647 nir_metadata valid_metadata
;
1648 } nir_function_impl
;
1650 ATTRIBUTE_RETURNS_NONNULL
static inline nir_block
*
1651 nir_start_block(nir_function_impl
*impl
)
1653 return (nir_block
*) impl
->body
.head_sentinel
.next
;
1656 ATTRIBUTE_RETURNS_NONNULL
static inline nir_block
*
1657 nir_impl_last_block(nir_function_impl
*impl
)
1659 return (nir_block
*) impl
->body
.tail_sentinel
.prev
;
1662 static inline nir_cf_node
*
1663 nir_cf_node_next(nir_cf_node
*node
)
1665 struct exec_node
*next
= exec_node_get_next(&node
->node
);
1666 if (exec_node_is_tail_sentinel(next
))
1669 return exec_node_data(nir_cf_node
, next
, node
);
1672 static inline nir_cf_node
*
1673 nir_cf_node_prev(nir_cf_node
*node
)
1675 struct exec_node
*prev
= exec_node_get_prev(&node
->node
);
1676 if (exec_node_is_head_sentinel(prev
))
1679 return exec_node_data(nir_cf_node
, prev
, node
);
1683 nir_cf_node_is_first(const nir_cf_node
*node
)
1685 return exec_node_is_head_sentinel(node
->node
.prev
);
1689 nir_cf_node_is_last(const nir_cf_node
*node
)
1691 return exec_node_is_tail_sentinel(node
->node
.next
);
1694 NIR_DEFINE_CAST(nir_cf_node_as_block
, nir_cf_node
, nir_block
, cf_node
,
1695 type
, nir_cf_node_block
)
1696 NIR_DEFINE_CAST(nir_cf_node_as_if
, nir_cf_node
, nir_if
, cf_node
,
1697 type
, nir_cf_node_if
)
1698 NIR_DEFINE_CAST(nir_cf_node_as_loop
, nir_cf_node
, nir_loop
, cf_node
,
1699 type
, nir_cf_node_loop
)
1700 NIR_DEFINE_CAST(nir_cf_node_as_function
, nir_cf_node
,
1701 nir_function_impl
, cf_node
, type
, nir_cf_node_function
)
1703 static inline nir_block
*
1704 nir_if_first_then_block(nir_if
*if_stmt
)
1706 struct exec_node
*head
= exec_list_get_head(&if_stmt
->then_list
);
1707 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, head
, node
));
1710 static inline nir_block
*
1711 nir_if_last_then_block(nir_if
*if_stmt
)
1713 struct exec_node
*tail
= exec_list_get_tail(&if_stmt
->then_list
);
1714 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, tail
, node
));
1717 static inline nir_block
*
1718 nir_if_first_else_block(nir_if
*if_stmt
)
1720 struct exec_node
*head
= exec_list_get_head(&if_stmt
->else_list
);
1721 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, head
, node
));
1724 static inline nir_block
*
1725 nir_if_last_else_block(nir_if
*if_stmt
)
1727 struct exec_node
*tail
= exec_list_get_tail(&if_stmt
->else_list
);
1728 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, tail
, node
));
1731 static inline nir_block
*
1732 nir_loop_first_block(nir_loop
*loop
)
1734 struct exec_node
*head
= exec_list_get_head(&loop
->body
);
1735 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, head
, node
));
1738 static inline nir_block
*
1739 nir_loop_last_block(nir_loop
*loop
)
1741 struct exec_node
*tail
= exec_list_get_tail(&loop
->body
);
1742 return nir_cf_node_as_block(exec_node_data(nir_cf_node
, tail
, node
));
1748 nir_parameter_inout
,
1749 } nir_parameter_type
;
1752 nir_parameter_type param_type
;
1753 const struct glsl_type
*type
;
1756 typedef struct nir_function
{
1757 struct exec_node node
;
1760 struct nir_shader
*shader
;
1762 unsigned num_params
;
1763 nir_parameter
*params
;
1764 const struct glsl_type
*return_type
;
1766 /** The implementation of this function.
1768 * If the function is only declared and not implemented, this is NULL.
1770 nir_function_impl
*impl
;
1773 typedef struct nir_shader_compiler_options
{
1778 /** Lowers flrp when it does not support doubles */
1785 bool lower_bitfield_extract
;
1786 bool lower_bitfield_insert
;
1787 bool lower_uadd_carry
;
1788 bool lower_usub_borrow
;
1789 /** lowers fneg and ineg to fsub and isub. */
1791 /** lowers fsub and isub to fadd+fneg and iadd+ineg. */
1794 /* lower {slt,sge,seq,sne} to {flt,fge,feq,fne} + b2f: */
1797 /** enables rules to lower idiv by power-of-two: */
1800 /* Does the native fdot instruction replicate its result for four
1801 * components? If so, then opt_algebraic_late will turn all fdotN
1802 * instructions into fdot_replicatedN instructions.
1804 bool fdot_replicates
;
1806 /** lowers ffract to fsub+ffloor: */
1809 bool lower_pack_half_2x16
;
1810 bool lower_pack_unorm_2x16
;
1811 bool lower_pack_snorm_2x16
;
1812 bool lower_pack_unorm_4x8
;
1813 bool lower_pack_snorm_4x8
;
1814 bool lower_unpack_half_2x16
;
1815 bool lower_unpack_unorm_2x16
;
1816 bool lower_unpack_snorm_2x16
;
1817 bool lower_unpack_unorm_4x8
;
1818 bool lower_unpack_snorm_4x8
;
1820 bool lower_extract_byte
;
1821 bool lower_extract_word
;
1824 * Does the driver support real 32-bit integers? (Otherwise, integers
1825 * are simulated by floats.)
1827 bool native_integers
;
1829 /* Indicates that the driver only has zero-based vertex id */
1830 bool vertex_id_zero_based
;
1832 bool lower_cs_local_index_from_id
;
1835 * Should nir_lower_io() create load_interpolated_input intrinsics?
1837 * If not, it generates regular load_input intrinsics and interpolation
1838 * information must be inferred from the list of input nir_variables.
1840 bool use_interpolated_input_intrinsics
;
1842 unsigned max_unroll_iterations
;
1843 } nir_shader_compiler_options
;
1845 typedef struct nir_shader
{
1846 /** list of uniforms (nir_variable) */
1847 struct exec_list uniforms
;
1849 /** list of inputs (nir_variable) */
1850 struct exec_list inputs
;
1852 /** list of outputs (nir_variable) */
1853 struct exec_list outputs
;
1855 /** list of shared compute variables (nir_variable) */
1856 struct exec_list shared
;
1858 /** Set of driver-specific options for the shader.
1860 * The memory for the options is expected to be kept in a single static
1861 * copy by the driver.
1863 const struct nir_shader_compiler_options
*options
;
1865 /** Various bits of compile-time information about a given shader */
1866 struct shader_info
*info
;
1868 /** list of global variables in the shader (nir_variable) */
1869 struct exec_list globals
;
1871 /** list of system value variables in the shader (nir_variable) */
1872 struct exec_list system_values
;
1874 struct exec_list functions
; /** < list of nir_function */
1876 /** list of global register in the shader */
1877 struct exec_list registers
;
1879 /** next available global register index */
1883 * the highest index a load_input_*, load_uniform_*, etc. intrinsic can
1886 unsigned num_inputs
, num_uniforms
, num_outputs
, num_shared
;
1888 /** The shader stage, such as MESA_SHADER_VERTEX. */
1889 gl_shader_stage stage
;
1892 static inline nir_function_impl
*
1893 nir_shader_get_entrypoint(nir_shader
*shader
)
1895 assert(exec_list_length(&shader
->functions
) == 1);
1896 struct exec_node
*func_node
= exec_list_get_head(&shader
->functions
);
1897 nir_function
*func
= exec_node_data(nir_function
, func_node
, node
);
1898 assert(func
->return_type
== glsl_void_type());
1899 assert(func
->num_params
== 0);
1904 #define nir_foreach_function(func, shader) \
1905 foreach_list_typed(nir_function, func, node, &(shader)->functions)
1907 nir_shader
*nir_shader_create(void *mem_ctx
,
1908 gl_shader_stage stage
,
1909 const nir_shader_compiler_options
*options
,
1912 /** creates a register, including assigning it an index and adding it to the list */
1913 nir_register
*nir_global_reg_create(nir_shader
*shader
);
1915 nir_register
*nir_local_reg_create(nir_function_impl
*impl
);
1917 void nir_reg_remove(nir_register
*reg
);
1919 /** Adds a variable to the appropriate list in nir_shader */
1920 void nir_shader_add_variable(nir_shader
*shader
, nir_variable
*var
);
1923 nir_function_impl_add_variable(nir_function_impl
*impl
, nir_variable
*var
)
1925 assert(var
->data
.mode
== nir_var_local
);
1926 exec_list_push_tail(&impl
->locals
, &var
->node
);
1929 /** creates a variable, sets a few defaults, and adds it to the list */
1930 nir_variable
*nir_variable_create(nir_shader
*shader
,
1931 nir_variable_mode mode
,
1932 const struct glsl_type
*type
,
1934 /** creates a local variable and adds it to the list */
1935 nir_variable
*nir_local_variable_create(nir_function_impl
*impl
,
1936 const struct glsl_type
*type
,
1939 /** creates a function and adds it to the shader's list of functions */
1940 nir_function
*nir_function_create(nir_shader
*shader
, const char *name
);
1942 nir_function_impl
*nir_function_impl_create(nir_function
*func
);
1943 /** creates a function_impl that isn't tied to any particular function */
1944 nir_function_impl
*nir_function_impl_create_bare(nir_shader
*shader
);
1946 nir_block
*nir_block_create(nir_shader
*shader
);
1947 nir_if
*nir_if_create(nir_shader
*shader
);
1948 nir_loop
*nir_loop_create(nir_shader
*shader
);
1950 nir_function_impl
*nir_cf_node_get_function(nir_cf_node
*node
);
1952 /** requests that the given pieces of metadata be generated */
1953 void nir_metadata_require(nir_function_impl
*impl
, nir_metadata required
, ...);
1954 /** dirties all but the preserved metadata */
1955 void nir_metadata_preserve(nir_function_impl
*impl
, nir_metadata preserved
);
1957 /** creates an instruction with default swizzle/writemask/etc. with NULL registers */
1958 nir_alu_instr
*nir_alu_instr_create(nir_shader
*shader
, nir_op op
);
1960 nir_jump_instr
*nir_jump_instr_create(nir_shader
*shader
, nir_jump_type type
);
1962 nir_load_const_instr
*nir_load_const_instr_create(nir_shader
*shader
,
1963 unsigned num_components
,
1966 nir_intrinsic_instr
*nir_intrinsic_instr_create(nir_shader
*shader
,
1967 nir_intrinsic_op op
);
1969 nir_call_instr
*nir_call_instr_create(nir_shader
*shader
,
1970 nir_function
*callee
);
1972 nir_tex_instr
*nir_tex_instr_create(nir_shader
*shader
, unsigned num_srcs
);
1974 nir_phi_instr
*nir_phi_instr_create(nir_shader
*shader
);
1976 nir_parallel_copy_instr
*nir_parallel_copy_instr_create(nir_shader
*shader
);
1978 nir_ssa_undef_instr
*nir_ssa_undef_instr_create(nir_shader
*shader
,
1979 unsigned num_components
,
1982 nir_deref_var
*nir_deref_var_create(void *mem_ctx
, nir_variable
*var
);
1983 nir_deref_array
*nir_deref_array_create(void *mem_ctx
);
1984 nir_deref_struct
*nir_deref_struct_create(void *mem_ctx
, unsigned field_index
);
1986 typedef bool (*nir_deref_foreach_leaf_cb
)(nir_deref_var
*deref
, void *state
);
1987 bool nir_deref_foreach_leaf(nir_deref_var
*deref
,
1988 nir_deref_foreach_leaf_cb cb
, void *state
);
1990 nir_load_const_instr
*
1991 nir_deref_get_const_initializer_load(nir_shader
*shader
, nir_deref_var
*deref
);
1994 * NIR Cursors and Instruction Insertion API
1997 * A tiny struct representing a point to insert/extract instructions or
1998 * control flow nodes. Helps reduce the combinatorial explosion of possible
1999 * points to insert/extract.
2001 * \sa nir_control_flow.h
2004 nir_cursor_before_block
,
2005 nir_cursor_after_block
,
2006 nir_cursor_before_instr
,
2007 nir_cursor_after_instr
,
2008 } nir_cursor_option
;
2011 nir_cursor_option option
;
2018 static inline nir_block
*
2019 nir_cursor_current_block(nir_cursor cursor
)
2021 if (cursor
.option
== nir_cursor_before_instr
||
2022 cursor
.option
== nir_cursor_after_instr
) {
2023 return cursor
.instr
->block
;
2025 return cursor
.block
;
2029 bool nir_cursors_equal(nir_cursor a
, nir_cursor b
);
2031 static inline nir_cursor
2032 nir_before_block(nir_block
*block
)
2035 cursor
.option
= nir_cursor_before_block
;
2036 cursor
.block
= block
;
2040 static inline nir_cursor
2041 nir_after_block(nir_block
*block
)
2044 cursor
.option
= nir_cursor_after_block
;
2045 cursor
.block
= block
;
2049 static inline nir_cursor
2050 nir_before_instr(nir_instr
*instr
)
2053 cursor
.option
= nir_cursor_before_instr
;
2054 cursor
.instr
= instr
;
2058 static inline nir_cursor
2059 nir_after_instr(nir_instr
*instr
)
2062 cursor
.option
= nir_cursor_after_instr
;
2063 cursor
.instr
= instr
;
2067 static inline nir_cursor
2068 nir_after_block_before_jump(nir_block
*block
)
2070 nir_instr
*last_instr
= nir_block_last_instr(block
);
2071 if (last_instr
&& last_instr
->type
== nir_instr_type_jump
) {
2072 return nir_before_instr(last_instr
);
2074 return nir_after_block(block
);
2078 static inline nir_cursor
2079 nir_before_cf_node(nir_cf_node
*node
)
2081 if (node
->type
== nir_cf_node_block
)
2082 return nir_before_block(nir_cf_node_as_block(node
));
2084 return nir_after_block(nir_cf_node_as_block(nir_cf_node_prev(node
)));
2087 static inline nir_cursor
2088 nir_after_cf_node(nir_cf_node
*node
)
2090 if (node
->type
== nir_cf_node_block
)
2091 return nir_after_block(nir_cf_node_as_block(node
));
2093 return nir_before_block(nir_cf_node_as_block(nir_cf_node_next(node
)));
2096 static inline nir_cursor
2097 nir_after_phis(nir_block
*block
)
2099 nir_foreach_instr(instr
, block
) {
2100 if (instr
->type
!= nir_instr_type_phi
)
2101 return nir_before_instr(instr
);
2103 return nir_after_block(block
);
2106 static inline nir_cursor
2107 nir_after_cf_node_and_phis(nir_cf_node
*node
)
2109 if (node
->type
== nir_cf_node_block
)
2110 return nir_after_block(nir_cf_node_as_block(node
));
2112 nir_block
*block
= nir_cf_node_as_block(nir_cf_node_next(node
));
2114 return nir_after_phis(block
);
2117 static inline nir_cursor
2118 nir_before_cf_list(struct exec_list
*cf_list
)
2120 nir_cf_node
*first_node
= exec_node_data(nir_cf_node
,
2121 exec_list_get_head(cf_list
), node
);
2122 return nir_before_cf_node(first_node
);
2125 static inline nir_cursor
2126 nir_after_cf_list(struct exec_list
*cf_list
)
2128 nir_cf_node
*last_node
= exec_node_data(nir_cf_node
,
2129 exec_list_get_tail(cf_list
), node
);
2130 return nir_after_cf_node(last_node
);
2134 * Insert a NIR instruction at the given cursor.
2136 * Note: This does not update the cursor.
2138 void nir_instr_insert(nir_cursor cursor
, nir_instr
*instr
);
2141 nir_instr_insert_before(nir_instr
*instr
, nir_instr
*before
)
2143 nir_instr_insert(nir_before_instr(instr
), before
);
2147 nir_instr_insert_after(nir_instr
*instr
, nir_instr
*after
)
2149 nir_instr_insert(nir_after_instr(instr
), after
);
2153 nir_instr_insert_before_block(nir_block
*block
, nir_instr
*before
)
2155 nir_instr_insert(nir_before_block(block
), before
);
2159 nir_instr_insert_after_block(nir_block
*block
, nir_instr
*after
)
2161 nir_instr_insert(nir_after_block(block
), after
);
2165 nir_instr_insert_before_cf(nir_cf_node
*node
, nir_instr
*before
)
2167 nir_instr_insert(nir_before_cf_node(node
), before
);
2171 nir_instr_insert_after_cf(nir_cf_node
*node
, nir_instr
*after
)
2173 nir_instr_insert(nir_after_cf_node(node
), after
);
2177 nir_instr_insert_before_cf_list(struct exec_list
*list
, nir_instr
*before
)
2179 nir_instr_insert(nir_before_cf_list(list
), before
);
2183 nir_instr_insert_after_cf_list(struct exec_list
*list
, nir_instr
*after
)
2185 nir_instr_insert(nir_after_cf_list(list
), after
);
2188 void nir_instr_remove(nir_instr
*instr
);
2192 typedef bool (*nir_foreach_ssa_def_cb
)(nir_ssa_def
*def
, void *state
);
2193 typedef bool (*nir_foreach_dest_cb
)(nir_dest
*dest
, void *state
);
2194 typedef bool (*nir_foreach_src_cb
)(nir_src
*src
, void *state
);
2195 bool nir_foreach_ssa_def(nir_instr
*instr
, nir_foreach_ssa_def_cb cb
,
2197 bool nir_foreach_dest(nir_instr
*instr
, nir_foreach_dest_cb cb
, void *state
);
2198 bool nir_foreach_src(nir_instr
*instr
, nir_foreach_src_cb cb
, void *state
);
2200 nir_const_value
*nir_src_as_const_value(nir_src src
);
2201 bool nir_src_is_dynamically_uniform(nir_src src
);
2202 bool nir_srcs_equal(nir_src src1
, nir_src src2
);
2203 void nir_instr_rewrite_src(nir_instr
*instr
, nir_src
*src
, nir_src new_src
);
2204 void nir_instr_move_src(nir_instr
*dest_instr
, nir_src
*dest
, nir_src
*src
);
2205 void nir_if_rewrite_condition(nir_if
*if_stmt
, nir_src new_src
);
2206 void nir_instr_rewrite_dest(nir_instr
*instr
, nir_dest
*dest
,
2209 void nir_ssa_dest_init(nir_instr
*instr
, nir_dest
*dest
,
2210 unsigned num_components
, unsigned bit_size
,
2212 void nir_ssa_def_init(nir_instr
*instr
, nir_ssa_def
*def
,
2213 unsigned num_components
, unsigned bit_size
,
2215 void nir_ssa_def_rewrite_uses(nir_ssa_def
*def
, nir_src new_src
);
2216 void nir_ssa_def_rewrite_uses_after(nir_ssa_def
*def
, nir_src new_src
,
2217 nir_instr
*after_me
);
2219 uint8_t nir_ssa_def_components_read(nir_ssa_def
*def
);
2222 * finds the next basic block in source-code order, returns NULL if there is
2226 nir_block
*nir_block_cf_tree_next(nir_block
*block
);
2228 /* Performs the opposite of nir_block_cf_tree_next() */
2230 nir_block
*nir_block_cf_tree_prev(nir_block
*block
);
2232 /* Gets the first block in a CF node in source-code order */
2234 nir_block
*nir_cf_node_cf_tree_first(nir_cf_node
*node
);
2236 /* Gets the last block in a CF node in source-code order */
2238 nir_block
*nir_cf_node_cf_tree_last(nir_cf_node
*node
);
2240 /* Gets the next block after a CF node in source-code order */
2242 nir_block
*nir_cf_node_cf_tree_next(nir_cf_node
*node
);
2244 /* Macros for loops that visit blocks in source-code order */
2246 #define nir_foreach_block(block, impl) \
2247 for (nir_block *block = nir_start_block(impl); block != NULL; \
2248 block = nir_block_cf_tree_next(block))
2250 #define nir_foreach_block_safe(block, impl) \
2251 for (nir_block *block = nir_start_block(impl), \
2252 *next = nir_block_cf_tree_next(block); \
2254 block = next, next = nir_block_cf_tree_next(block))
2256 #define nir_foreach_block_reverse(block, impl) \
2257 for (nir_block *block = nir_impl_last_block(impl); block != NULL; \
2258 block = nir_block_cf_tree_prev(block))
2260 #define nir_foreach_block_reverse_safe(block, impl) \
2261 for (nir_block *block = nir_impl_last_block(impl), \
2262 *prev = nir_block_cf_tree_prev(block); \
2264 block = prev, prev = nir_block_cf_tree_prev(block))
2266 #define nir_foreach_block_in_cf_node(block, node) \
2267 for (nir_block *block = nir_cf_node_cf_tree_first(node); \
2268 block != nir_cf_node_cf_tree_next(node); \
2269 block = nir_block_cf_tree_next(block))
2271 /* If the following CF node is an if, this function returns that if.
2272 * Otherwise, it returns NULL.
2274 nir_if
*nir_block_get_following_if(nir_block
*block
);
2276 nir_loop
*nir_block_get_following_loop(nir_block
*block
);
2278 void nir_index_local_regs(nir_function_impl
*impl
);
2279 void nir_index_global_regs(nir_shader
*shader
);
2280 void nir_index_ssa_defs(nir_function_impl
*impl
);
2281 unsigned nir_index_instrs(nir_function_impl
*impl
);
2283 void nir_index_blocks(nir_function_impl
*impl
);
2285 void nir_print_shader(nir_shader
*shader
, FILE *fp
);
2286 void nir_print_shader_annotated(nir_shader
*shader
, FILE *fp
, struct hash_table
*errors
);
2287 void nir_print_instr(const nir_instr
*instr
, FILE *fp
);
2289 nir_shader
*nir_shader_clone(void *mem_ctx
, const nir_shader
*s
);
2290 nir_function_impl
*nir_function_impl_clone(const nir_function_impl
*fi
);
2291 nir_constant
*nir_constant_clone(const nir_constant
*c
, nir_variable
*var
);
2292 nir_variable
*nir_variable_clone(const nir_variable
*c
, nir_shader
*shader
);
2293 nir_deref
*nir_deref_clone(const nir_deref
*deref
, void *mem_ctx
);
2294 nir_deref_var
*nir_deref_var_clone(const nir_deref_var
*deref
, void *mem_ctx
);
2297 void nir_validate_shader(nir_shader
*shader
);
2298 void nir_metadata_set_validation_flag(nir_shader
*shader
);
2299 void nir_metadata_check_validation_flag(nir_shader
*shader
);
2302 should_clone_nir(void)
2304 static int should_clone
= -1;
2305 if (should_clone
< 0)
2306 should_clone
= env_var_as_boolean("NIR_TEST_CLONE", false);
2308 return should_clone
;
2311 static inline void nir_validate_shader(nir_shader
*shader
) { (void) shader
; }
2312 static inline void nir_metadata_set_validation_flag(nir_shader
*shader
) { (void) shader
; }
2313 static inline void nir_metadata_check_validation_flag(nir_shader
*shader
) { (void) shader
; }
2314 static inline bool should_clone_nir(void) { return false; }
2317 #define _PASS(nir, do_pass) do { \
2319 nir_validate_shader(nir); \
2320 if (should_clone_nir()) { \
2321 nir_shader *clone = nir_shader_clone(ralloc_parent(nir), nir); \
2327 #define NIR_PASS(progress, nir, pass, ...) _PASS(nir, \
2328 nir_metadata_set_validation_flag(nir); \
2329 if (pass(nir, ##__VA_ARGS__)) { \
2331 nir_metadata_check_validation_flag(nir); \
2335 #define NIR_PASS_V(nir, pass, ...) _PASS(nir, \
2336 pass(nir, ##__VA_ARGS__); \
2339 void nir_calc_dominance_impl(nir_function_impl
*impl
);
2340 void nir_calc_dominance(nir_shader
*shader
);
2342 nir_block
*nir_dominance_lca(nir_block
*b1
, nir_block
*b2
);
2343 bool nir_block_dominates(nir_block
*parent
, nir_block
*child
);
2345 void nir_dump_dom_tree_impl(nir_function_impl
*impl
, FILE *fp
);
2346 void nir_dump_dom_tree(nir_shader
*shader
, FILE *fp
);
2348 void nir_dump_dom_frontier_impl(nir_function_impl
*impl
, FILE *fp
);
2349 void nir_dump_dom_frontier(nir_shader
*shader
, FILE *fp
);
2351 void nir_dump_cfg_impl(nir_function_impl
*impl
, FILE *fp
);
2352 void nir_dump_cfg(nir_shader
*shader
, FILE *fp
);
2354 int nir_gs_count_vertices(const nir_shader
*shader
);
2356 bool nir_split_var_copies(nir_shader
*shader
);
2358 bool nir_lower_returns_impl(nir_function_impl
*impl
);
2359 bool nir_lower_returns(nir_shader
*shader
);
2361 bool nir_inline_functions(nir_shader
*shader
);
2363 bool nir_propagate_invariant(nir_shader
*shader
);
2365 void nir_lower_var_copy_instr(nir_intrinsic_instr
*copy
, nir_shader
*shader
);
2366 bool nir_lower_var_copies(nir_shader
*shader
);
2368 bool nir_lower_global_vars_to_local(nir_shader
*shader
);
2370 bool nir_lower_indirect_derefs(nir_shader
*shader
, nir_variable_mode modes
);
2372 bool nir_lower_locals_to_regs(nir_shader
*shader
);
2374 void nir_lower_io_to_temporaries(nir_shader
*shader
,
2375 nir_function_impl
*entrypoint
,
2376 bool outputs
, bool inputs
);
2378 void nir_shader_gather_info(nir_shader
*shader
, nir_function_impl
*entrypoint
);
2380 void nir_assign_var_locations(struct exec_list
*var_list
, unsigned *size
,
2381 int (*type_size
)(const struct glsl_type
*));
2384 /* If set, this forces all non-flat fragment shader inputs to be
2385 * interpolated as if with the "sample" qualifier. This requires
2386 * nir_shader_compiler_options::use_interpolated_input_intrinsics.
2388 nir_lower_io_force_sample_interpolation
= (1 << 1),
2389 } nir_lower_io_options
;
2390 bool nir_lower_io(nir_shader
*shader
,
2391 nir_variable_mode modes
,
2392 int (*type_size
)(const struct glsl_type
*),
2393 nir_lower_io_options
);
2394 nir_src
*nir_get_io_offset_src(nir_intrinsic_instr
*instr
);
2395 nir_src
*nir_get_io_vertex_index_src(nir_intrinsic_instr
*instr
);
2397 bool nir_is_per_vertex_io(nir_variable
*var
, gl_shader_stage stage
);
2399 void nir_lower_io_types(nir_shader
*shader
);
2400 bool nir_lower_regs_to_ssa_impl(nir_function_impl
*impl
);
2401 bool nir_lower_regs_to_ssa(nir_shader
*shader
);
2402 bool nir_lower_vars_to_ssa(nir_shader
*shader
);
2404 bool nir_remove_dead_variables(nir_shader
*shader
, nir_variable_mode modes
);
2405 bool nir_lower_constant_initializers(nir_shader
*shader
,
2406 nir_variable_mode modes
);
2408 bool nir_move_vec_src_uses_to_dest(nir_shader
*shader
);
2409 bool nir_lower_vec_to_movs(nir_shader
*shader
);
2410 bool nir_lower_alu_to_scalar(nir_shader
*shader
);
2411 bool nir_lower_load_const_to_scalar(nir_shader
*shader
);
2413 bool nir_lower_phis_to_scalar(nir_shader
*shader
);
2414 void nir_lower_io_to_scalar(nir_shader
*shader
, nir_variable_mode mask
);
2416 bool nir_lower_samplers(nir_shader
*shader
,
2417 const struct gl_shader_program
*shader_program
);
2419 bool nir_lower_system_values(nir_shader
*shader
);
2421 typedef struct nir_lower_tex_options
{
2423 * bitmask of (1 << GLSL_SAMPLER_DIM_x) to control for which
2424 * sampler types a texture projector is lowered.
2429 * If true, lower away nir_tex_src_offset for all texelfetch instructions.
2431 bool lower_txf_offset
;
2434 * If true, lower away nir_tex_src_offset for all rect textures.
2436 bool lower_rect_offset
;
2439 * If true, lower rect textures to 2D, using txs to fetch the
2440 * texture dimensions and dividing the texture coords by the
2441 * texture dims to normalize.
2446 * If true, convert yuv to rgb.
2448 unsigned lower_y_uv_external
;
2449 unsigned lower_y_u_v_external
;
2450 unsigned lower_yx_xuxv_external
;
2453 * To emulate certain texture wrap modes, this can be used
2454 * to saturate the specified tex coord to [0.0, 1.0]. The
2455 * bits are according to sampler #, ie. if, for example:
2457 * (conf->saturate_s & (1 << n))
2459 * is true, then the s coord for sampler n is saturated.
2461 * Note that clamping must happen *after* projector lowering
2462 * so any projected texture sample instruction with a clamped
2463 * coordinate gets automatically lowered, regardless of the
2464 * 'lower_txp' setting.
2466 unsigned saturate_s
;
2467 unsigned saturate_t
;
2468 unsigned saturate_r
;
2470 /* Bitmask of textures that need swizzling.
2472 * If (swizzle_result & (1 << texture_index)), then the swizzle in
2473 * swizzles[texture_index] is applied to the result of the texturing
2476 unsigned swizzle_result
;
2478 /* A swizzle for each texture. Values 0-3 represent x, y, z, or w swizzles
2479 * while 4 and 5 represent 0 and 1 respectively.
2481 uint8_t swizzles
[32][4];
2484 * Bitmap of textures that need srgb to linear conversion. If
2485 * (lower_srgb & (1 << texture_index)) then the rgb (xyz) components
2486 * of the texture are lowered to linear.
2488 unsigned lower_srgb
;
2491 * If true, lower nir_texop_txd on cube maps with nir_texop_txl.
2493 bool lower_txd_cube_map
;
2496 * If true, lower nir_texop_txd on shadow samplers (except cube maps)
2497 * with nir_texop_txl. Notice that cube map shadow samplers are lowered
2498 * with lower_txd_cube_map.
2500 bool lower_txd_shadow
;
2501 } nir_lower_tex_options
;
2503 bool nir_lower_tex(nir_shader
*shader
,
2504 const nir_lower_tex_options
*options
);
2506 bool nir_lower_idiv(nir_shader
*shader
);
2508 bool nir_lower_clip_vs(nir_shader
*shader
, unsigned ucp_enables
);
2509 bool nir_lower_clip_fs(nir_shader
*shader
, unsigned ucp_enables
);
2510 bool nir_lower_clip_cull_distance_arrays(nir_shader
*nir
);
2512 void nir_lower_two_sided_color(nir_shader
*shader
);
2514 bool nir_lower_clamp_color_outputs(nir_shader
*shader
);
2516 void nir_lower_passthrough_edgeflags(nir_shader
*shader
);
2517 void nir_lower_tes_patch_vertices(nir_shader
*tes
, unsigned patch_vertices
);
2519 typedef struct nir_lower_wpos_ytransform_options
{
2520 int state_tokens
[5];
2521 bool fs_coord_origin_upper_left
:1;
2522 bool fs_coord_origin_lower_left
:1;
2523 bool fs_coord_pixel_center_integer
:1;
2524 bool fs_coord_pixel_center_half_integer
:1;
2525 } nir_lower_wpos_ytransform_options
;
2527 bool nir_lower_wpos_ytransform(nir_shader
*shader
,
2528 const nir_lower_wpos_ytransform_options
*options
);
2529 bool nir_lower_wpos_center(nir_shader
*shader
, const bool for_sample_shading
);
2531 typedef struct nir_lower_drawpixels_options
{
2532 int texcoord_state_tokens
[5];
2533 int scale_state_tokens
[5];
2534 int bias_state_tokens
[5];
2535 unsigned drawpix_sampler
;
2536 unsigned pixelmap_sampler
;
2538 bool scale_and_bias
:1;
2539 } nir_lower_drawpixels_options
;
2541 void nir_lower_drawpixels(nir_shader
*shader
,
2542 const nir_lower_drawpixels_options
*options
);
2544 typedef struct nir_lower_bitmap_options
{
2547 } nir_lower_bitmap_options
;
2549 void nir_lower_bitmap(nir_shader
*shader
, const nir_lower_bitmap_options
*options
);
2551 bool nir_lower_atomics(nir_shader
*shader
,
2552 const struct gl_shader_program
*shader_program
);
2553 bool nir_lower_atomics_to_ssbo(nir_shader
*shader
, unsigned ssbo_offset
);
2554 bool nir_lower_to_source_mods(nir_shader
*shader
);
2556 bool nir_lower_gs_intrinsics(nir_shader
*shader
);
2559 nir_lower_imul64
= (1 << 0),
2560 nir_lower_isign64
= (1 << 1),
2561 /** Lower all int64 modulus and division opcodes */
2562 nir_lower_divmod64
= (1 << 2),
2563 } nir_lower_int64_options
;
2565 bool nir_lower_int64(nir_shader
*shader
, nir_lower_int64_options options
);
2568 nir_lower_drcp
= (1 << 0),
2569 nir_lower_dsqrt
= (1 << 1),
2570 nir_lower_drsq
= (1 << 2),
2571 nir_lower_dtrunc
= (1 << 3),
2572 nir_lower_dfloor
= (1 << 4),
2573 nir_lower_dceil
= (1 << 5),
2574 nir_lower_dfract
= (1 << 6),
2575 nir_lower_dround_even
= (1 << 7),
2576 nir_lower_dmod
= (1 << 8)
2577 } nir_lower_doubles_options
;
2579 bool nir_lower_doubles(nir_shader
*shader
, nir_lower_doubles_options options
);
2580 bool nir_lower_64bit_pack(nir_shader
*shader
);
2582 bool nir_normalize_cubemap_coords(nir_shader
*shader
);
2584 void nir_live_ssa_defs_impl(nir_function_impl
*impl
);
2586 void nir_loop_analyze_impl(nir_function_impl
*impl
,
2587 nir_variable_mode indirect_mask
);
2589 bool nir_ssa_defs_interfere(nir_ssa_def
*a
, nir_ssa_def
*b
);
2591 bool nir_repair_ssa_impl(nir_function_impl
*impl
);
2592 bool nir_repair_ssa(nir_shader
*shader
);
2594 void nir_convert_loop_to_lcssa(nir_loop
*loop
);
2596 /* If phi_webs_only is true, only convert SSA values involved in phi nodes to
2597 * registers. If false, convert all values (even those not involved in a phi
2598 * node) to registers.
2600 bool nir_convert_from_ssa(nir_shader
*shader
, bool phi_webs_only
);
2602 bool nir_lower_phis_to_regs_block(nir_block
*block
);
2603 bool nir_lower_ssa_defs_to_regs_block(nir_block
*block
);
2605 bool nir_opt_algebraic(nir_shader
*shader
);
2606 bool nir_opt_algebraic_before_ffma(nir_shader
*shader
);
2607 bool nir_opt_algebraic_late(nir_shader
*shader
);
2608 bool nir_opt_constant_folding(nir_shader
*shader
);
2610 bool nir_opt_global_to_local(nir_shader
*shader
);
2612 bool nir_copy_prop(nir_shader
*shader
);
2614 bool nir_opt_copy_prop_vars(nir_shader
*shader
);
2616 bool nir_opt_cse(nir_shader
*shader
);
2618 bool nir_opt_dce(nir_shader
*shader
);
2620 bool nir_opt_dead_cf(nir_shader
*shader
);
2622 bool nir_opt_gcm(nir_shader
*shader
, bool value_number
);
2624 bool nir_opt_if(nir_shader
*shader
);
2626 bool nir_opt_loop_unroll(nir_shader
*shader
, nir_variable_mode indirect_mask
);
2628 bool nir_opt_move_comparisons(nir_shader
*shader
);
2630 bool nir_opt_peephole_select(nir_shader
*shader
, unsigned limit
);
2632 bool nir_opt_remove_phis(nir_shader
*shader
);
2634 bool nir_opt_trivial_continues(nir_shader
*shader
);
2636 bool nir_opt_undef(nir_shader
*shader
);
2638 bool nir_opt_conditional_discard(nir_shader
*shader
);
2640 void nir_sweep(nir_shader
*shader
);
2642 nir_intrinsic_op
nir_intrinsic_from_system_value(gl_system_value val
);
2643 gl_system_value
nir_system_value_from_intrinsic(nir_intrinsic_op intrin
);