2 # Copyright (C) 2018 Red Hat
3 # Copyright (C) 2014 Intel Corporation
5 # Permission is hereby granted, free of charge, to any person obtaining a
6 # copy of this software and associated documentation files (the "Software"),
7 # to deal in the Software without restriction, including without limitation
8 # the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 # and/or sell copies of the Software, and to permit persons to whom the
10 # Software is furnished to do so, subject to the following conditions:
12 # The above copyright notice and this permission notice (including the next
13 # paragraph) shall be included in all copies or substantial portions of the
16 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 # THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
21 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
25 # This file defines all the available intrinsics in one place.
27 # The Intrinsic class corresponds one-to-one with nir_intrinsic_info
30 class Intrinsic(object):
31 """Class that represents all the information about an intrinsic opcode.
32 NOTE: this must be kept in sync with nir_intrinsic_info.
34 def __init__(self
, name
, src_components
, dest_components
,
35 indices
, flags
, sysval
, bit_sizes
):
38 - name: the intrinsic name
39 - src_components: list of the number of components per src, 0 means
40 vectorized instruction with number of components given in the
41 num_components field in nir_intrinsic_instr.
42 - dest_components: number of destination components, -1 means no
43 dest, 0 means number of components given in num_components field
44 in nir_intrinsic_instr.
45 - indices: list of constant indicies
46 - flags: list of semantic flags
47 - sysval: is this a system-value intrinsic
48 - bit_sizes: allowed dest bit_sizes
50 assert isinstance(name
, str)
51 assert isinstance(src_components
, list)
53 assert isinstance(src_components
[0], int)
54 assert isinstance(dest_components
, int)
55 assert isinstance(indices
, list)
57 assert isinstance(indices
[0], str)
58 assert isinstance(flags
, list)
60 assert isinstance(flags
[0], str)
61 assert isinstance(sysval
, bool)
63 assert isinstance(bit_sizes
[0], int)
66 self
.num_srcs
= len(src_components
)
67 self
.src_components
= src_components
68 self
.has_dest
= (dest_components
>= 0)
69 self
.dest_components
= dest_components
70 self
.num_indices
= len(indices
)
71 self
.indices
= indices
74 self
.bit_sizes
= bit_sizes
80 # A constant 'base' value that is added to an offset src:
81 BASE
= "NIR_INTRINSIC_BASE"
82 # For store instructions, a writemask:
83 WRMASK
= "NIR_INTRINSIC_WRMASK"
84 # The stream-id for GS emit_vertex/end_primitive intrinsics:
85 STREAM_ID
= "NIR_INTRINSIC_STREAM_ID"
86 # The clip-plane id for load_user_clip_plane intrinsics:
87 UCP_ID
= "NIR_INTRINSIC_UCP_ID"
88 # The amount of data, starting from BASE, that this instruction
89 # may access. This is used to provide bounds if the offset is
91 RANGE
= "NIR_INTRINSIC_RANGE"
92 # The vulkan descriptor set binding for vulkan_resource_index
94 DESC_SET
= "NIR_INTRINSIC_DESC_SET"
95 # The vulkan descriptor set binding for vulkan_resource_index
97 BINDING
= "NIR_INTRINSIC_BINDING"
99 COMPONENT
= "NIR_INTRINSIC_COMPONENT"
100 # Interpolation mode (only meaningful for FS inputs)
101 INTERP_MODE
= "NIR_INTRINSIC_INTERP_MODE"
102 # A binary nir_op to use when performing a reduction or scan operation
103 REDUCTION_OP
= "NIR_INTRINSIC_REDUCTION_OP"
104 # Cluster size for reduction operations
105 CLUSTER_SIZE
= "NIR_INTRINSIC_CLUSTER_SIZE"
106 # Parameter index for a load_param intrinsic
107 PARAM_IDX
= "NIR_INTRINSIC_PARAM_IDX"
108 # Image dimensionality for image intrinsics
109 IMAGE_DIM
= "NIR_INTRINSIC_IMAGE_DIM"
110 # Non-zero if we are accessing an array image
111 IMAGE_ARRAY
= "NIR_INTRINSIC_IMAGE_ARRAY"
112 # Access qualifiers for image and memory access intrinsics
113 ACCESS
= "NIR_INTRINSIC_ACCESS"
114 DST_ACCESS
= "NIR_INTRINSIC_DST_ACCESS"
115 SRC_ACCESS
= "NIR_INTRINSIC_SRC_ACCESS"
116 # Image format for image intrinsics
117 FORMAT
= "NIR_INTRINSIC_FORMAT"
118 # Offset or address alignment
119 ALIGN_MUL
= "NIR_INTRINSIC_ALIGN_MUL"
120 ALIGN_OFFSET
= "NIR_INTRINSIC_ALIGN_OFFSET"
121 # The vulkan descriptor type for vulkan_resource_index
122 DESC_TYPE
= "NIR_INTRINSIC_DESC_TYPE"
123 # The nir_alu_type of a uniform/input/output
124 TYPE
= "NIR_INTRINSIC_TYPE"
125 # The swizzle mask for quad_swizzle_amd & masked_swizzle_amd
126 SWIZZLE_MASK
= "NIR_INTRINSIC_SWIZZLE_MASK"
127 # Driver location of attribute
128 DRIVER_LOCATION
= "NIR_INTRINSIC_DRIVER_LOCATION"
129 # Ordering and visibility of a memory operation
130 MEMORY_SEMANTICS
= "NIR_INTRINSIC_MEMORY_SEMANTICS"
131 # Modes affected by a memory operation
132 MEMORY_MODES
= "NIR_INTRINSIC_MEMORY_MODES"
133 # Scope of a memory operation
134 MEMORY_SCOPE
= "NIR_INTRINSIC_MEMORY_SCOPE"
135 # Scope of a control barrier
136 EXECUTION_SCOPE
= "NIR_INTRINSIC_EXECUTION_SCOPE"
137 IO_SEMANTICS
= "NIR_INTRINSIC_IO_SEMANTICS"
143 CAN_ELIMINATE
= "NIR_INTRINSIC_CAN_ELIMINATE"
144 CAN_REORDER
= "NIR_INTRINSIC_CAN_REORDER"
148 # Defines a new NIR intrinsic. By default, the intrinsic will have no sources
149 # and no destination.
151 # You can set dest_comp=n to enable a destination for the intrinsic, in which
152 # case it will have that many components, or =0 for "as many components as the
153 # NIR destination value."
155 # Set src_comp=n to enable sources for the intruction. It can be an array of
156 # component counts, or (for convenience) a scalar component count if there's
157 # only one source. If a component count is 0, it will be as many components as
158 # the intrinsic has based on the dest_comp.
159 def intrinsic(name
, src_comp
=[], dest_comp
=-1, indices
=[],
160 flags
=[], sysval
=False, bit_sizes
=[]):
161 assert name
not in INTR_OPCODES
162 INTR_OPCODES
[name
] = Intrinsic(name
, src_comp
, dest_comp
,
163 indices
, flags
, sysval
, bit_sizes
)
165 intrinsic("nop", flags
=[CAN_ELIMINATE
])
167 intrinsic("load_param", dest_comp
=0, indices
=[PARAM_IDX
], flags
=[CAN_ELIMINATE
])
169 intrinsic("load_deref", dest_comp
=0, src_comp
=[-1],
170 indices
=[ACCESS
], flags
=[CAN_ELIMINATE
])
171 intrinsic("store_deref", src_comp
=[-1, 0], indices
=[WRMASK
, ACCESS
])
172 intrinsic("copy_deref", src_comp
=[-1, -1], indices
=[DST_ACCESS
, SRC_ACCESS
])
174 # Interpolation of input. The interp_deref_at* intrinsics are similar to the
175 # load_var intrinsic acting on a shader input except that they interpolate the
176 # input differently. The at_sample, at_offset and at_vertex intrinsics take an
177 # additional source that is an integer sample id, a vec2 position offset, or a
178 # vertex ID respectively.
180 intrinsic("interp_deref_at_centroid", dest_comp
=0, src_comp
=[1],
181 flags
=[ CAN_ELIMINATE
, CAN_REORDER
])
182 intrinsic("interp_deref_at_sample", src_comp
=[1, 1], dest_comp
=0,
183 flags
=[CAN_ELIMINATE
, CAN_REORDER
])
184 intrinsic("interp_deref_at_offset", src_comp
=[1, 2], dest_comp
=0,
185 flags
=[CAN_ELIMINATE
, CAN_REORDER
])
186 intrinsic("interp_deref_at_vertex", src_comp
=[1, 1], dest_comp
=0,
187 flags
=[CAN_ELIMINATE
, CAN_REORDER
])
189 # Gets the length of an unsized array at the end of a buffer
190 intrinsic("deref_buffer_array_length", src_comp
=[-1], dest_comp
=1,
191 flags
=[CAN_ELIMINATE
, CAN_REORDER
])
193 # Ask the driver for the size of a given buffer. It takes the buffer index
195 intrinsic("get_buffer_size", src_comp
=[-1], dest_comp
=1,
196 flags
=[CAN_ELIMINATE
, CAN_REORDER
])
198 # a barrier is an intrinsic with no inputs/outputs but which can't be moved
199 # around/optimized in general
205 # Demote fragment shader invocation to a helper invocation. Any stores to
206 # memory after this instruction are suppressed and the fragment does not write
207 # outputs to the framebuffer. Unlike discard, demote needs to ensure that
208 # derivatives will still work for invocations that were not demoted.
210 # As specified by SPV_EXT_demote_to_helper_invocation.
212 intrinsic("is_helper_invocation", dest_comp
=1, flags
=[CAN_ELIMINATE
])
214 # A workgroup-level control barrier. Any thread which hits this barrier will
215 # pause until all threads within the current workgroup have also hit the
216 # barrier. For compute shaders, the workgroup is defined as the local group.
217 # For tessellation control shaders, the workgroup is defined as the current
218 # patch. This intrinsic does not imply any sort of memory barrier.
219 barrier("control_barrier")
221 # Memory barrier with semantics analogous to the memoryBarrier() GLSL
223 barrier("memory_barrier")
225 # Control/Memory barrier with explicit scope. Follows the semantics of SPIR-V
226 # OpMemoryBarrier and OpControlBarrier, used to implement Vulkan Memory Model.
227 # Storage that the barrier applies is represented using NIR variable modes.
228 # For an OpMemoryBarrier, set EXECUTION_SCOPE to NIR_SCOPE_NONE.
229 intrinsic("scoped_barrier",
230 indices
=[EXECUTION_SCOPE
, MEMORY_SEMANTICS
, MEMORY_MODES
, MEMORY_SCOPE
])
232 # Shader clock intrinsic with semantics analogous to the clock2x32ARB()
234 # The latter can be used as code motion barrier, which is currently not
236 intrinsic("shader_clock", dest_comp
=2, flags
=[CAN_ELIMINATE
],
237 indices
=[MEMORY_SCOPE
])
239 # Shader ballot intrinsics with semantics analogous to the
242 # readInvocationARB()
243 # readFirstInvocationARB()
245 # GLSL functions from ARB_shader_ballot.
246 intrinsic("ballot", src_comp
=[1], dest_comp
=0, flags
=[CAN_ELIMINATE
])
247 intrinsic("read_invocation", src_comp
=[0, 1], dest_comp
=0, flags
=[CAN_ELIMINATE
])
248 intrinsic("read_first_invocation", src_comp
=[0], dest_comp
=0, flags
=[CAN_ELIMINATE
])
250 # Additional SPIR-V ballot intrinsics
252 # These correspond to the SPIR-V opcodes
254 # OpGroupUniformElect
255 # OpSubgroupFirstInvocationKHR
256 intrinsic("elect", dest_comp
=1, flags
=[CAN_ELIMINATE
])
257 intrinsic("first_invocation", dest_comp
=1, flags
=[CAN_ELIMINATE
])
259 # Memory barrier with semantics analogous to the compute shader
260 # groupMemoryBarrier(), memoryBarrierAtomicCounter(), memoryBarrierBuffer(),
261 # memoryBarrierImage() and memoryBarrierShared() GLSL intrinsics.
262 barrier("group_memory_barrier")
263 barrier("memory_barrier_atomic_counter")
264 barrier("memory_barrier_buffer")
265 barrier("memory_barrier_image")
266 barrier("memory_barrier_shared")
267 barrier("begin_invocation_interlock")
268 barrier("end_invocation_interlock")
270 # Memory barrier for synchronizing TCS patch outputs
271 barrier("memory_barrier_tcs_patch")
273 # A conditional discard/demote, with a single boolean source.
274 intrinsic("discard_if", src_comp
=[1])
275 intrinsic("demote_if", src_comp
=[1])
277 # ARB_shader_group_vote intrinsics
278 intrinsic("vote_any", src_comp
=[1], dest_comp
=1, flags
=[CAN_ELIMINATE
])
279 intrinsic("vote_all", src_comp
=[1], dest_comp
=1, flags
=[CAN_ELIMINATE
])
280 intrinsic("vote_feq", src_comp
=[0], dest_comp
=1, flags
=[CAN_ELIMINATE
])
281 intrinsic("vote_ieq", src_comp
=[0], dest_comp
=1, flags
=[CAN_ELIMINATE
])
283 # Ballot ALU operations from SPIR-V.
285 # These operations work like their ALU counterparts except that the operate
286 # on a uvec4 which is treated as a 128bit integer. Also, they are, in
287 # general, free to ignore any bits which are above the subgroup size.
288 intrinsic("ballot_bitfield_extract", src_comp
=[4, 1], dest_comp
=1, flags
=[CAN_ELIMINATE
])
289 intrinsic("ballot_bit_count_reduce", src_comp
=[4], dest_comp
=1, flags
=[CAN_ELIMINATE
])
290 intrinsic("ballot_bit_count_inclusive", src_comp
=[4], dest_comp
=1, flags
=[CAN_ELIMINATE
])
291 intrinsic("ballot_bit_count_exclusive", src_comp
=[4], dest_comp
=1, flags
=[CAN_ELIMINATE
])
292 intrinsic("ballot_find_lsb", src_comp
=[4], dest_comp
=1, flags
=[CAN_ELIMINATE
])
293 intrinsic("ballot_find_msb", src_comp
=[4], dest_comp
=1, flags
=[CAN_ELIMINATE
])
295 # Shuffle operations from SPIR-V.
296 intrinsic("shuffle", src_comp
=[0, 1], dest_comp
=0, flags
=[CAN_ELIMINATE
])
297 intrinsic("shuffle_xor", src_comp
=[0, 1], dest_comp
=0, flags
=[CAN_ELIMINATE
])
298 intrinsic("shuffle_up", src_comp
=[0, 1], dest_comp
=0, flags
=[CAN_ELIMINATE
])
299 intrinsic("shuffle_down", src_comp
=[0, 1], dest_comp
=0, flags
=[CAN_ELIMINATE
])
301 # Quad operations from SPIR-V.
302 intrinsic("quad_broadcast", src_comp
=[0, 1], dest_comp
=0, flags
=[CAN_ELIMINATE
])
303 intrinsic("quad_swap_horizontal", src_comp
=[0], dest_comp
=0, flags
=[CAN_ELIMINATE
])
304 intrinsic("quad_swap_vertical", src_comp
=[0], dest_comp
=0, flags
=[CAN_ELIMINATE
])
305 intrinsic("quad_swap_diagonal", src_comp
=[0], dest_comp
=0, flags
=[CAN_ELIMINATE
])
307 intrinsic("reduce", src_comp
=[0], dest_comp
=0, indices
=[REDUCTION_OP
, CLUSTER_SIZE
],
308 flags
=[CAN_ELIMINATE
])
309 intrinsic("inclusive_scan", src_comp
=[0], dest_comp
=0, indices
=[REDUCTION_OP
],
310 flags
=[CAN_ELIMINATE
])
311 intrinsic("exclusive_scan", src_comp
=[0], dest_comp
=0, indices
=[REDUCTION_OP
],
312 flags
=[CAN_ELIMINATE
])
314 # AMD shader ballot operations
315 intrinsic("quad_swizzle_amd", src_comp
=[0], dest_comp
=0, indices
=[SWIZZLE_MASK
],
316 flags
=[CAN_ELIMINATE
])
317 intrinsic("masked_swizzle_amd", src_comp
=[0], dest_comp
=0, indices
=[SWIZZLE_MASK
],
318 flags
=[CAN_ELIMINATE
])
319 intrinsic("write_invocation_amd", src_comp
=[0, 0, 1], dest_comp
=0, flags
=[CAN_ELIMINATE
])
320 intrinsic("mbcnt_amd", src_comp
=[1], dest_comp
=1, flags
=[CAN_ELIMINATE
])
322 # Basic Geometry Shader intrinsics.
324 # emit_vertex implements GLSL's EmitStreamVertex() built-in. It takes a single
325 # index, which is the stream ID to write to.
327 # end_primitive implements GLSL's EndPrimitive() built-in.
328 intrinsic("emit_vertex", indices
=[STREAM_ID
])
329 intrinsic("end_primitive", indices
=[STREAM_ID
])
331 # Geometry Shader intrinsics with a vertex count.
333 # Alternatively, drivers may implement these intrinsics, and use
334 # nir_lower_gs_intrinsics() to convert from the basic intrinsics.
336 # These maintain a count of the number of vertices emitted, as an additional
337 # unsigned integer source.
338 intrinsic("emit_vertex_with_counter", src_comp
=[1], indices
=[STREAM_ID
])
339 intrinsic("end_primitive_with_counter", src_comp
=[1], indices
=[STREAM_ID
])
340 intrinsic("set_vertex_count", src_comp
=[1])
344 # The *_var variants take an atomic_uint nir_variable, while the other,
345 # lowered, variants take a constant buffer index and register offset.
347 def atomic(name
, flags
=[]):
348 intrinsic(name
+ "_deref", src_comp
=[-1], dest_comp
=1, flags
=flags
)
349 intrinsic(name
, src_comp
=[1], dest_comp
=1, indices
=[BASE
], flags
=flags
)
352 intrinsic(name
+ "_deref", src_comp
=[-1, 1], dest_comp
=1)
353 intrinsic(name
, src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
356 intrinsic(name
+ "_deref", src_comp
=[-1, 1, 1], dest_comp
=1)
357 intrinsic(name
, src_comp
=[1, 1, 1], dest_comp
=1, indices
=[BASE
])
359 atomic("atomic_counter_inc")
360 atomic("atomic_counter_pre_dec")
361 atomic("atomic_counter_post_dec")
362 atomic("atomic_counter_read", flags
=[CAN_ELIMINATE
])
363 atomic2("atomic_counter_add")
364 atomic2("atomic_counter_min")
365 atomic2("atomic_counter_max")
366 atomic2("atomic_counter_and")
367 atomic2("atomic_counter_or")
368 atomic2("atomic_counter_xor")
369 atomic2("atomic_counter_exchange")
370 atomic3("atomic_counter_comp_swap")
372 # Image load, store and atomic intrinsics.
374 # All image intrinsics come in three versions. One which take an image target
375 # passed as a deref chain as the first source, one which takes an index as the
376 # first source, and one which takes a bindless handle as the first source.
377 # In the first version, the image variable contains the memory and layout
378 # qualifiers that influence the semantics of the intrinsic. In the second and
379 # third, the image format and access qualifiers are provided as constant
382 # All image intrinsics take a four-coordinate vector and a sample index as
383 # 2nd and 3rd sources, determining the location within the image that will be
384 # accessed by the intrinsic. Components not applicable to the image target
385 # in use are undefined. Image store takes an additional four-component
386 # argument with the value to be written, and image atomic operations take
387 # either one or two additional scalar arguments with the same meaning as in
388 # the ARB_shader_image_load_store specification.
389 def image(name
, src_comp
=[], extra_indices
=[], **kwargs
):
390 intrinsic("image_deref_" + name
, src_comp
=[1] + src_comp
,
391 indices
=[ACCESS
] + extra_indices
, **kwargs
)
392 intrinsic("image_" + name
, src_comp
=[1] + src_comp
,
393 indices
=[IMAGE_DIM
, IMAGE_ARRAY
, FORMAT
, ACCESS
] + extra_indices
, **kwargs
)
394 intrinsic("bindless_image_" + name
, src_comp
=[1] + src_comp
,
395 indices
=[IMAGE_DIM
, IMAGE_ARRAY
, FORMAT
, ACCESS
] + extra_indices
, **kwargs
)
397 image("load", src_comp
=[4, 1, 1], extra_indices
=[TYPE
], dest_comp
=0, flags
=[CAN_ELIMINATE
])
398 image("store", src_comp
=[4, 1, 0, 1], extra_indices
=[TYPE
])
399 image("atomic_add", src_comp
=[4, 1, 1], dest_comp
=1)
400 image("atomic_imin", src_comp
=[4, 1, 1], dest_comp
=1)
401 image("atomic_umin", src_comp
=[4, 1, 1], dest_comp
=1)
402 image("atomic_imax", src_comp
=[4, 1, 1], dest_comp
=1)
403 image("atomic_umax", src_comp
=[4, 1, 1], dest_comp
=1)
404 image("atomic_and", src_comp
=[4, 1, 1], dest_comp
=1)
405 image("atomic_or", src_comp
=[4, 1, 1], dest_comp
=1)
406 image("atomic_xor", src_comp
=[4, 1, 1], dest_comp
=1)
407 image("atomic_exchange", src_comp
=[4, 1, 1], dest_comp
=1)
408 image("atomic_comp_swap", src_comp
=[4, 1, 1, 1], dest_comp
=1)
409 image("atomic_fadd", src_comp
=[4, 1, 1], dest_comp
=1)
410 image("size", dest_comp
=0, src_comp
=[1], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
411 image("samples", dest_comp
=1, flags
=[CAN_ELIMINATE
, CAN_REORDER
])
412 image("atomic_inc_wrap", src_comp
=[4, 1, 1], dest_comp
=1)
413 image("atomic_dec_wrap", src_comp
=[4, 1, 1], dest_comp
=1)
414 # CL-specific format queries
415 image("format", dest_comp
=1, flags
=[CAN_ELIMINATE
, CAN_REORDER
])
416 image("order", dest_comp
=1, flags
=[CAN_ELIMINATE
, CAN_REORDER
])
418 # Vulkan descriptor set intrinsics
420 # The Vulkan API uses a different binding model from GL. In the Vulkan
421 # API, all external resources are represented by a tuple:
423 # (descriptor set, binding, array index)
425 # where the array index is the only thing allowed to be indirect. The
426 # vulkan_surface_index intrinsic takes the descriptor set and binding as
427 # its first two indices and the array index as its source. The third
428 # index is a nir_variable_mode in case that's useful to the backend.
430 # The intended usage is that the shader will call vulkan_surface_index to
431 # get an index and then pass that as the buffer index ubo/ssbo calls.
433 # The vulkan_resource_reindex intrinsic takes a resource index in src0
434 # (the result of a vulkan_resource_index or vulkan_resource_reindex) which
435 # corresponds to the tuple (set, binding, index) and computes an index
436 # corresponding to tuple (set, binding, idx + src1).
437 intrinsic("vulkan_resource_index", src_comp
=[1], dest_comp
=0,
438 indices
=[DESC_SET
, BINDING
, DESC_TYPE
],
439 flags
=[CAN_ELIMINATE
, CAN_REORDER
])
440 intrinsic("vulkan_resource_reindex", src_comp
=[0, 1], dest_comp
=0,
441 indices
=[DESC_TYPE
], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
442 intrinsic("load_vulkan_descriptor", src_comp
=[-1], dest_comp
=0,
443 indices
=[DESC_TYPE
], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
445 # variable atomic intrinsics
447 # All of these variable atomic memory operations read a value from memory,
448 # compute a new value using one of the operations below, write the new value
449 # to memory, and return the original value read.
451 # All operations take 2 sources except CompSwap that takes 3. These sources
454 # 0: A deref to the memory on which to perform the atomic
455 # 1: The data parameter to the atomic function (i.e. the value to add
456 # in shared_atomic_add, etc).
457 # 2: For CompSwap only: the second data parameter.
458 intrinsic("deref_atomic_add", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
459 intrinsic("deref_atomic_imin", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
460 intrinsic("deref_atomic_umin", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
461 intrinsic("deref_atomic_imax", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
462 intrinsic("deref_atomic_umax", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
463 intrinsic("deref_atomic_and", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
464 intrinsic("deref_atomic_or", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
465 intrinsic("deref_atomic_xor", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
466 intrinsic("deref_atomic_exchange", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
467 intrinsic("deref_atomic_comp_swap", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
468 intrinsic("deref_atomic_fadd", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
469 intrinsic("deref_atomic_fmin", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
470 intrinsic("deref_atomic_fmax", src_comp
=[-1, 1], dest_comp
=1, indices
=[ACCESS
])
471 intrinsic("deref_atomic_fcomp_swap", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
473 # SSBO atomic intrinsics
475 # All of the SSBO atomic memory operations read a value from memory,
476 # compute a new value using one of the operations below, write the new
477 # value to memory, and return the original value read.
479 # All operations take 3 sources except CompSwap that takes 4. These
482 # 0: The SSBO buffer index.
483 # 1: The offset into the SSBO buffer of the variable that the atomic
484 # operation will operate on.
485 # 2: The data parameter to the atomic function (i.e. the value to add
486 # in ssbo_atomic_add, etc).
487 # 3: For CompSwap only: the second data parameter.
488 intrinsic("ssbo_atomic_add", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
489 intrinsic("ssbo_atomic_imin", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
490 intrinsic("ssbo_atomic_umin", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
491 intrinsic("ssbo_atomic_imax", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
492 intrinsic("ssbo_atomic_umax", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
493 intrinsic("ssbo_atomic_and", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
494 intrinsic("ssbo_atomic_or", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
495 intrinsic("ssbo_atomic_xor", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
496 intrinsic("ssbo_atomic_exchange", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
497 intrinsic("ssbo_atomic_comp_swap", src_comp
=[-1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
498 intrinsic("ssbo_atomic_fadd", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
499 intrinsic("ssbo_atomic_fmin", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
500 intrinsic("ssbo_atomic_fmax", src_comp
=[-1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
501 intrinsic("ssbo_atomic_fcomp_swap", src_comp
=[-1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
503 # CS shared variable atomic intrinsics
505 # All of the shared variable atomic memory operations read a value from
506 # memory, compute a new value using one of the operations below, write the
507 # new value to memory, and return the original value read.
509 # All operations take 2 sources except CompSwap that takes 3. These
512 # 0: The offset into the shared variable storage region that the atomic
513 # operation will operate on.
514 # 1: The data parameter to the atomic function (i.e. the value to add
515 # in shared_atomic_add, etc).
516 # 2: For CompSwap only: the second data parameter.
517 intrinsic("shared_atomic_add", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
518 intrinsic("shared_atomic_imin", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
519 intrinsic("shared_atomic_umin", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
520 intrinsic("shared_atomic_imax", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
521 intrinsic("shared_atomic_umax", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
522 intrinsic("shared_atomic_and", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
523 intrinsic("shared_atomic_or", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
524 intrinsic("shared_atomic_xor", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
525 intrinsic("shared_atomic_exchange", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
526 intrinsic("shared_atomic_comp_swap", src_comp
=[1, 1, 1], dest_comp
=1, indices
=[BASE
])
527 intrinsic("shared_atomic_fadd", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
528 intrinsic("shared_atomic_fmin", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
529 intrinsic("shared_atomic_fmax", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
530 intrinsic("shared_atomic_fcomp_swap", src_comp
=[1, 1, 1], dest_comp
=1, indices
=[BASE
])
532 # Global atomic intrinsics
534 # All of the shared variable atomic memory operations read a value from
535 # memory, compute a new value using one of the operations below, write the
536 # new value to memory, and return the original value read.
538 # All operations take 2 sources except CompSwap that takes 3. These
541 # 0: The memory address that the atomic operation will operate on.
542 # 1: The data parameter to the atomic function (i.e. the value to add
543 # in shared_atomic_add, etc).
544 # 2: For CompSwap only: the second data parameter.
545 intrinsic("global_atomic_add", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
546 intrinsic("global_atomic_imin", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
547 intrinsic("global_atomic_umin", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
548 intrinsic("global_atomic_imax", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
549 intrinsic("global_atomic_umax", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
550 intrinsic("global_atomic_and", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
551 intrinsic("global_atomic_or", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
552 intrinsic("global_atomic_xor", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
553 intrinsic("global_atomic_exchange", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
554 intrinsic("global_atomic_comp_swap", src_comp
=[1, 1, 1], dest_comp
=1, indices
=[BASE
])
555 intrinsic("global_atomic_fadd", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
556 intrinsic("global_atomic_fmin", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
557 intrinsic("global_atomic_fmax", src_comp
=[1, 1], dest_comp
=1, indices
=[BASE
])
558 intrinsic("global_atomic_fcomp_swap", src_comp
=[1, 1, 1], dest_comp
=1, indices
=[BASE
])
560 def system_value(name
, dest_comp
, indices
=[], bit_sizes
=[32]):
561 intrinsic("load_" + name
, [], dest_comp
, indices
,
562 flags
=[CAN_ELIMINATE
, CAN_REORDER
], sysval
=True,
565 system_value("frag_coord", 4)
566 system_value("point_coord", 2)
567 system_value("line_coord", 1)
568 system_value("front_face", 1, bit_sizes
=[1, 32])
569 system_value("vertex_id", 1)
570 system_value("vertex_id_zero_base", 1)
571 system_value("first_vertex", 1)
572 system_value("is_indexed_draw", 1)
573 system_value("base_vertex", 1)
574 system_value("instance_id", 1)
575 system_value("base_instance", 1)
576 system_value("draw_id", 1)
577 system_value("sample_id", 1)
578 # sample_id_no_per_sample is like sample_id but does not imply per-
579 # sample shading. See the lower_helper_invocation option.
580 system_value("sample_id_no_per_sample", 1)
581 system_value("sample_pos", 2)
582 system_value("sample_mask_in", 1)
583 system_value("primitive_id", 1)
584 system_value("invocation_id", 1)
585 system_value("tess_coord", 3)
586 system_value("tess_level_outer", 4)
587 system_value("tess_level_inner", 2)
588 system_value("tess_level_outer_default", 4)
589 system_value("tess_level_inner_default", 2)
590 system_value("patch_vertices_in", 1)
591 system_value("local_invocation_id", 3)
592 system_value("local_invocation_index", 1)
593 # zero_base indicates it starts from 0 for the current dispatch
594 # non-zero_base indicates the base is included
595 system_value("work_group_id", 3, bit_sizes
=[32, 64])
596 system_value("work_group_id_zero_base", 3)
597 system_value("base_work_group_id", 3, bit_sizes
=[32, 64])
598 system_value("user_clip_plane", 4, indices
=[UCP_ID
])
599 system_value("num_work_groups", 3, bit_sizes
=[32, 64])
600 system_value("helper_invocation", 1, bit_sizes
=[1, 32])
601 system_value("alpha_ref_float", 1)
602 system_value("layer_id", 1)
603 system_value("view_index", 1)
604 system_value("subgroup_size", 1)
605 system_value("subgroup_invocation", 1)
606 system_value("subgroup_eq_mask", 0, bit_sizes
=[32, 64])
607 system_value("subgroup_ge_mask", 0, bit_sizes
=[32, 64])
608 system_value("subgroup_gt_mask", 0, bit_sizes
=[32, 64])
609 system_value("subgroup_le_mask", 0, bit_sizes
=[32, 64])
610 system_value("subgroup_lt_mask", 0, bit_sizes
=[32, 64])
611 system_value("num_subgroups", 1)
612 system_value("subgroup_id", 1)
613 system_value("local_group_size", 3)
614 # note: the definition of global_invocation_id_zero_base is based on
615 # (work_group_id * local_group_size) + local_invocation_id.
616 # it is *not* based on work_group_id_zero_base, meaning the work group
617 # base is already accounted for, and the global base is additive on top of that
618 system_value("global_invocation_id", 3, bit_sizes
=[32, 64])
619 system_value("global_invocation_id_zero_base", 3, bit_sizes
=[32, 64])
620 system_value("base_global_invocation_id", 3, bit_sizes
=[32, 64])
621 system_value("global_invocation_index", 1, bit_sizes
=[32, 64])
622 system_value("work_dim", 1)
623 system_value("line_width", 1)
624 system_value("aa_line_width", 1)
625 # BASE=0 for global/shader, BASE=1 for local/function
626 system_value("scratch_base_ptr", 0, bit_sizes
=[32,64], indices
=[BASE
])
628 # Driver-specific viewport scale/offset parameters.
630 # VC4 and V3D need to emit a scaled version of the position in the vertex
631 # shaders for binning, and having system values lets us move the math for that
634 # Panfrost needs to implement all coordinate transformation in the
635 # vertex shader; system values allow us to share this routine in NIR.
636 system_value("viewport_x_scale", 1)
637 system_value("viewport_y_scale", 1)
638 system_value("viewport_z_scale", 1)
639 system_value("viewport_z_offset", 1)
640 system_value("viewport_scale", 3)
641 system_value("viewport_offset", 3)
643 # Blend constant color values. Float values are clamped. Vectored versions are
644 # provided as well for driver convenience
646 system_value("blend_const_color_r_float", 1)
647 system_value("blend_const_color_g_float", 1)
648 system_value("blend_const_color_b_float", 1)
649 system_value("blend_const_color_a_float", 1)
650 system_value("blend_const_color_rgba", 4)
651 system_value("blend_const_color_rgba8888_unorm", 1)
652 system_value("blend_const_color_aaaa8888_unorm", 1)
654 # System values for gl_Color, for radeonsi which interpolates these in the
655 # shader prolog to handle two-sided color without recompiles and therefore
656 # doesn't handle these in the main shader part like normal varyings.
657 system_value("color0", 4)
658 system_value("color1", 4)
660 # System value for internal compute shaders in radeonsi.
661 system_value("user_data_amd", 4)
663 # Barycentric coordinate intrinsics.
665 # These set up the barycentric coordinates for a particular interpolation.
666 # The first four are for the simple cases: pixel, centroid, per-sample
667 # (at gl_SampleID), or pull model (1/W, 1/I, 1/J) at the pixel center. The next
668 # three two handle interpolating at a specified sample location, or
669 # interpolating with a vec2 offset,
671 # The interp_mode index should be either the INTERP_MODE_SMOOTH or
672 # INTERP_MODE_NOPERSPECTIVE enum values.
674 # The vec2 value produced by these intrinsics is intended for use as the
675 # barycoord source of a load_interpolated_input intrinsic.
677 def barycentric(name
, dst_comp
, src_comp
=[]):
678 intrinsic("load_barycentric_" + name
, src_comp
=src_comp
, dest_comp
=dst_comp
,
679 indices
=[INTERP_MODE
], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
682 barycentric("pixel", 2)
683 barycentric("centroid", 2)
684 barycentric("sample", 2)
685 barycentric("model", 3)
686 # src[] = { sample_id }.
687 barycentric("at_sample", 2, [1])
688 # src[] = { offset.xy }.
689 barycentric("at_offset", 2, [2])
691 # Load sample position:
693 # Takes a sample # and returns a sample position. Used for lowering
694 # interpolateAtSample() to interpolateAtOffset()
695 intrinsic("load_sample_pos_from_id", src_comp
=[1], dest_comp
=2,
696 flags
=[CAN_ELIMINATE
, CAN_REORDER
])
698 # Loads what I believe is the primitive size, for scaling ij to pixel size:
699 intrinsic("load_size_ir3", dest_comp
=1, flags
=[CAN_ELIMINATE
, CAN_REORDER
])
701 # Fragment shader input interpolation delta intrinsic.
703 # For hw where fragment shader input interpolation is handled in shader, the
704 # load_fs_input_interp deltas intrinsics can be used to load the input deltas
705 # used for interpolation as follows:
707 # vec3 iid = load_fs_input_interp_deltas(varying_slot)
708 # vec2 bary = load_barycentric_*(...)
709 # float result = iid.x + iid.y * bary.y + iid.z * bary.x
711 intrinsic("load_fs_input_interp_deltas", src_comp
=[1], dest_comp
=3,
712 indices
=[BASE
, COMPONENT
, IO_SEMANTICS
], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
714 # Load operations pull data from some piece of GPU memory. All load
715 # operations operate in terms of offsets into some piece of theoretical
716 # memory. Loads from externally visible memory (UBO and SSBO) simply take a
717 # byte offset as a source. Loads from opaque memory (uniforms, inputs, etc.)
718 # take a base+offset pair where the nir_intrinsic_base() gives the location
719 # of the start of the variable being loaded and and the offset source is a
720 # offset into that variable.
722 # Uniform load operations have a nir_intrinsic_range() index that specifies the
723 # range (starting at base) of the data from which we are loading. If
724 # range == 0, then the range is unknown.
726 # Some load operations such as UBO/SSBO load and per_vertex loads take an
727 # additional source to specify which UBO/SSBO/vertex to load from.
729 # The exact address type depends on the lowering pass that generates the
730 # load/store intrinsics. Typically, this is vec4 units for things such as
731 # varying slots and float units for fragment shader inputs. UBO and SSBO
732 # offsets are always in bytes.
734 def load(name
, src_comp
, indices
=[], flags
=[]):
735 intrinsic("load_" + name
, src_comp
, dest_comp
=0, indices
=indices
,
738 # src[] = { offset }.
739 load("uniform", [1], [BASE
, RANGE
, TYPE
], [CAN_ELIMINATE
, CAN_REORDER
])
740 # src[] = { buffer_index, offset }.
741 load("ubo", [-1, 1], [ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
742 # src[] = { buffer_index, offset in vec4 units }
743 load("ubo_vec4", [-1, 1], [ACCESS
, COMPONENT
], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
744 # src[] = { offset }.
745 load("input", [1], [BASE
, COMPONENT
, TYPE
, IO_SEMANTICS
], [CAN_ELIMINATE
, CAN_REORDER
])
746 # src[] = { vertex_id, offset }.
747 load("input_vertex", [1, 1], [BASE
, COMPONENT
, TYPE
, IO_SEMANTICS
], [CAN_ELIMINATE
, CAN_REORDER
])
748 # src[] = { vertex, offset }.
749 load("per_vertex_input", [1, 1], [BASE
, COMPONENT
, IO_SEMANTICS
], [CAN_ELIMINATE
, CAN_REORDER
])
750 # src[] = { barycoord, offset }.
751 load("interpolated_input", [2, 1], [BASE
, COMPONENT
, IO_SEMANTICS
], [CAN_ELIMINATE
, CAN_REORDER
])
753 # src[] = { buffer_index, offset }.
754 load("ssbo", [-1, 1], [ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
], [CAN_ELIMINATE
])
755 # src[] = { buffer_index }
756 load("ssbo_address", [1], [], [CAN_ELIMINATE
, CAN_REORDER
])
757 # src[] = { offset }.
758 load("output", [1], [BASE
, COMPONENT
, IO_SEMANTICS
], flags
=[CAN_ELIMINATE
])
759 # src[] = { vertex, offset }.
760 load("per_vertex_output", [1, 1], [BASE
, COMPONENT
, IO_SEMANTICS
], [CAN_ELIMINATE
])
761 # src[] = { offset }.
762 load("shared", [1], [BASE
, ALIGN_MUL
, ALIGN_OFFSET
], [CAN_ELIMINATE
])
763 # src[] = { offset }.
764 load("push_constant", [1], [BASE
, RANGE
], [CAN_ELIMINATE
, CAN_REORDER
])
765 # src[] = { offset }.
766 load("constant", [1], [BASE
, RANGE
, ALIGN_MUL
, ALIGN_OFFSET
],
767 [CAN_ELIMINATE
, CAN_REORDER
])
768 # src[] = { address }.
769 load("global", [1], [ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
], [CAN_ELIMINATE
])
770 # src[] = { address }.
771 load("global_constant", [1], [ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
],
772 [CAN_ELIMINATE
, CAN_REORDER
])
773 # src[] = { address }.
774 load("kernel_input", [1], [BASE
, RANGE
, ALIGN_MUL
, ALIGN_OFFSET
], [CAN_ELIMINATE
, CAN_REORDER
])
775 # src[] = { offset }.
776 load("scratch", [1], [ALIGN_MUL
, ALIGN_OFFSET
], [CAN_ELIMINATE
])
778 # Stores work the same way as loads, except now the first source is the value
779 # to store and the second (and possibly third) source specify where to store
780 # the value. SSBO and shared memory stores also have a
781 # nir_intrinsic_write_mask()
783 def store(name
, srcs
, indices
=[], flags
=[]):
784 intrinsic("store_" + name
, [0] + srcs
, indices
=indices
, flags
=flags
)
786 # src[] = { value, offset }.
787 store("output", [1], [BASE
, WRMASK
, COMPONENT
, TYPE
, IO_SEMANTICS
])
788 # src[] = { value, vertex, offset }.
789 store("per_vertex_output", [1, 1], [BASE
, WRMASK
, COMPONENT
, IO_SEMANTICS
])
790 # src[] = { value, block_index, offset }
791 store("ssbo", [-1, 1], [WRMASK
, ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
])
792 # src[] = { value, offset }.
793 store("shared", [1], [BASE
, WRMASK
, ALIGN_MUL
, ALIGN_OFFSET
])
794 # src[] = { value, address }.
795 store("global", [1], [WRMASK
, ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
])
796 # src[] = { value, offset }.
797 store("scratch", [1], [ALIGN_MUL
, ALIGN_OFFSET
, WRMASK
])
799 # IR3-specific version of most SSBO intrinsics. The only different
800 # compare to the originals is that they add an extra source to hold
801 # the dword-offset, which is needed by the backend code apart from
802 # the byte-offset already provided by NIR in one of the sources.
804 # NIR lowering pass 'ir3_nir_lower_io_offset' will replace the
805 # original SSBO intrinsics by these, placing the computed
806 # dword-offset always in the last source.
808 # The float versions are not handled because those are not supported
810 store("ssbo_ir3", [1, 1, 1],
811 indices
=[WRMASK
, ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
])
812 load("ssbo_ir3", [1, 1, 1],
813 indices
=[ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
], flags
=[CAN_ELIMINATE
])
814 intrinsic("ssbo_atomic_add_ir3", src_comp
=[1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
815 intrinsic("ssbo_atomic_imin_ir3", src_comp
=[1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
816 intrinsic("ssbo_atomic_umin_ir3", src_comp
=[1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
817 intrinsic("ssbo_atomic_imax_ir3", src_comp
=[1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
818 intrinsic("ssbo_atomic_umax_ir3", src_comp
=[1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
819 intrinsic("ssbo_atomic_and_ir3", src_comp
=[1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
820 intrinsic("ssbo_atomic_or_ir3", src_comp
=[1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
821 intrinsic("ssbo_atomic_xor_ir3", src_comp
=[1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
822 intrinsic("ssbo_atomic_exchange_ir3", src_comp
=[1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
823 intrinsic("ssbo_atomic_comp_swap_ir3", src_comp
=[1, 1, 1, 1, 1], dest_comp
=1, indices
=[ACCESS
])
825 # System values for freedreno geometry shaders.
826 system_value("vs_primitive_stride_ir3", 1)
827 system_value("vs_vertex_stride_ir3", 1)
828 system_value("gs_header_ir3", 1)
829 system_value("primitive_location_ir3", 1, indices
=[DRIVER_LOCATION
])
831 # System values for freedreno tessellation shaders.
832 system_value("hs_patch_stride_ir3", 1)
833 system_value("tess_factor_base_ir3", 2)
834 system_value("tess_param_base_ir3", 2)
835 system_value("tcs_header_ir3", 1)
837 # IR3-specific intrinsics for tessellation control shaders. cond_end_ir3 end
838 # the shader when src0 is false and is used to narrow down the TCS shader to
839 # just thread 0 before writing out tessellation levels.
840 intrinsic("cond_end_ir3", src_comp
=[1])
841 # end_patch_ir3 is used just before thread 0 exist the TCS and presumably
842 # signals the TE that the patch is complete and can be tessellated.
843 intrinsic("end_patch_ir3")
845 # IR3-specific load/store intrinsics. These access a buffer used to pass data
846 # between geometry stages - perhaps it's explicit access to the vertex cache.
848 # src[] = { value, offset }.
849 store("shared_ir3", [1], [BASE
, ALIGN_MUL
, ALIGN_OFFSET
])
850 # src[] = { offset }.
851 load("shared_ir3", [1], [BASE
, ALIGN_MUL
, ALIGN_OFFSET
], [CAN_ELIMINATE
])
853 # IR3-specific load/store global intrinsics. They take a 64-bit base address
854 # and a 32-bit offset. The hardware will add the base and the offset, which
855 # saves us from doing 64-bit math on the base address.
857 # src[] = { value, address(vec2 of hi+lo uint32_t), offset }.
858 # const_index[] = { write_mask, align_mul, align_offset }
859 store("global_ir3", [2, 1], indices
=[ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
])
860 # src[] = { address(vec2 of hi+lo uint32_t), offset }.
861 # const_index[] = { access, align_mul, align_offset }
862 load("global_ir3", [2, 1], indices
=[ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
], flags
=[CAN_ELIMINATE
])
864 # IR3-specific bindless handle specifier. Similar to vulkan_resource_index, but
865 # without the binding because the hardware expects a single flattened index
866 # rather than a (binding, index) pair. We may also want to use this with GL.
867 # Note that this doesn't actually turn into a HW instruction.
868 intrinsic("bindless_resource_ir3", [1], dest_comp
=1, indices
=[DESC_SET
], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
870 # Intrinsics used by the Midgard/Bifrost blend pipeline. These are defined
871 # within a blend shader to read/write the raw value from the tile buffer,
872 # without applying any format conversion in the process. If the shader needs
873 # usable pixel values, it must apply format conversions itself.
875 # These definitions are generic, but they are explicitly vendored to prevent
876 # other drivers from using them, as their semantics is defined in terms of the
877 # Midgard/Bifrost hardware tile buffer and may not line up with anything sane.
878 # One notable divergence is sRGB, which is asymmetric: raw_input_pan requires
879 # an sRGB->linear conversion, but linear values should be written to
880 # raw_output_pan and the hardware handles linear->sRGB.
883 store("raw_output_pan", [], [])
884 store("combined_output_pan", [1, 1, 1], [BASE
, COMPONENT
])
885 load("raw_output_pan", [1], [BASE
], [CAN_ELIMINATE
, CAN_REORDER
])
887 # Loads the sampler paramaters <min_lod, max_lod, lod_bias>
888 # src[] = { sampler_index }
889 load("sampler_lod_parameters_pan", [1], [CAN_ELIMINATE
, CAN_REORDER
])
891 # R600 specific instrincs
893 # R600 can only fetch 16 byte aligned data from an UBO, and the actual offset
894 # is given in vec4 units, so we have to fetch the a vec4 and get the component
896 # src[] = { buffer_index, offset }.
897 load("ubo_r600", [1, 1], [ACCESS
, ALIGN_MUL
, ALIGN_OFFSET
], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
899 # location where the tesselation data is stored in LDS
900 system_value("tcs_in_param_base_r600", 4)
901 system_value("tcs_out_param_base_r600", 4)
902 system_value("tcs_rel_patch_id_r600", 1)
903 system_value("tcs_tess_factor_base_r600", 1)
905 # load as many components as needed giving per-component addresses
906 intrinsic("load_local_shared_r600", src_comp
=[0], dest_comp
=0, indices
= [COMPONENT
], flags
= [CAN_ELIMINATE
, CAN_REORDER
])
908 store("local_shared_r600", [1], [WRMASK
])
911 # V3D-specific instrinc for tile buffer color reads.
913 # The hardware requires that we read the samples and components of a pixel
914 # in order, so we cannot eliminate or remove any loads in a sequence.
916 # src[] = { render_target }
917 # BASE = sample index
918 load("tlb_color_v3d", [1], [BASE
, COMPONENT
], [])
920 # V3D-specific instrinc for per-sample tile buffer color writes.
922 # The driver backend needs to identify per-sample color writes and emit
923 # specific code for them.
925 # src[] = { value, render_target }
926 # BASE = sample index
927 store("tlb_sample_color_v3d", [1], [BASE
, COMPONENT
, TYPE
], [])
929 # V3D-specific intrinsic to load the number of layers attached to
930 # the target framebuffer
931 intrinsic("load_fb_layers_v3d", dest_comp
=1, flags
=[CAN_ELIMINATE
, CAN_REORDER
])
933 # Intel-specific query for loading from the brw_image_param struct passed
934 # into the shader as a uniform. The variable is a deref to the image
935 # variable. The const index specifies which of the six parameters to load.
936 intrinsic("image_deref_load_param_intel", src_comp
=[1], dest_comp
=0,
937 indices
=[BASE
], flags
=[CAN_ELIMINATE
, CAN_REORDER
])
938 image("load_raw_intel", src_comp
=[1], dest_comp
=0,
939 flags
=[CAN_ELIMINATE
])
940 image("store_raw_intel", src_comp
=[1, 0])
942 # Number of data items being operated on for a SIMD program.
943 system_value("simd_width_intel", 1)