1 /* 2 * Copyright 2014 Intel Corporation 3 * 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: 10 * 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 13 * Software. 14 * 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 21 * IN THE SOFTWARE. 22 * 23 * Authors: 24 * Connor Abbott (cwabbott0 (at) gmail.com) 25 * 26 */ 27 28 /** 29 * This header file defines all the available intrinsics in one place. It 30 * expands to a list of macros of the form: 31 * 32 * INTRINSIC(name, num_srcs, src_components, has_dest, dest_components, 33 * num_variables, num_indices, idx0, idx1, idx2, flags) 34 * 35 * Which should correspond one-to-one with the nir_intrinsic_info structure. It 36 * is included in both ir.h to create the nir_intrinsic enum (with members of 37 * the form nir_intrinsic_(name)) and and in opcodes.c to create 38 * nir_intrinsic_infos, which is a const array of nir_intrinsic_info structures 39 * for each intrinsic. 40 */ 41 42 #define ARR(...) { __VA_ARGS__ } 43 44 INTRINSIC(nop, 0, ARR(0), false, 0, 0, 0, xx, xx, xx, 45 NIR_INTRINSIC_CAN_ELIMINATE) 46 47 INTRINSIC(load_var, 0, ARR(0), true, 0, 1, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE) 48 INTRINSIC(store_var, 1, ARR(0), false, 0, 1, 1, WRMASK, xx, xx, 0) 49 INTRINSIC(copy_var, 0, ARR(0), false, 0, 2, 0, xx, xx, xx, 0) 50 51 /* 52 * Interpolation of input. The interp_var_at* intrinsics are similar to the 53 * load_var intrinsic acting on a shader input except that they interpolate 54 * the input differently. The at_sample and at_offset intrinsics take an 55 * additional source that is an integer sample id or a vec2 position offset 56 * respectively. 57 */ 58 59 INTRINSIC(interp_var_at_centroid, 0, ARR(0), true, 0, 1, 0, xx, xx, xx, 60 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 61 INTRINSIC(interp_var_at_sample, 1, ARR(1), true, 0, 1, 0, xx, xx, xx, 62 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 63 INTRINSIC(interp_var_at_offset, 1, ARR(2), true, 0, 1, 0, xx, xx, xx, 64 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 65 66 /* 67 * Ask the driver for the size of a given buffer. It takes the buffer index 68 * as source. 69 */ 70 INTRINSIC(get_buffer_size, 1, ARR(1), true, 1, 0, 0, xx, xx, xx, 71 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 72 73 /* 74 * a barrier is an intrinsic with no inputs/outputs but which can't be moved 75 * around/optimized in general 76 */ 77 #define BARRIER(name) INTRINSIC(name, 0, ARR(0), false, 0, 0, 0, xx, xx, xx, 0) 78 79 BARRIER(barrier) 80 BARRIER(discard) 81 82 /* 83 * Memory barrier with semantics analogous to the memoryBarrier() GLSL 84 * intrinsic. 85 */ 86 BARRIER(memory_barrier) 87 88 /* 89 * Shader clock intrinsic with semantics analogous to the clock2x32ARB() 90 * GLSL intrinsic. 91 * The latter can be used as code motion barrier, which is currently not 92 * feasible with NIR. 93 */ 94 INTRINSIC(shader_clock, 0, ARR(0), true, 1, 0, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE) 95 96 /* 97 * Memory barrier with semantics analogous to the compute shader 98 * groupMemoryBarrier(), memoryBarrierAtomicCounter(), memoryBarrierBuffer(), 99 * memoryBarrierImage() and memoryBarrierShared() GLSL intrinsics. 100 */ 101 BARRIER(group_memory_barrier) 102 BARRIER(memory_barrier_atomic_counter) 103 BARRIER(memory_barrier_buffer) 104 BARRIER(memory_barrier_image) 105 BARRIER(memory_barrier_shared) 106 107 /** A conditional discard, with a single boolean source. */ 108 INTRINSIC(discard_if, 1, ARR(1), false, 0, 0, 0, xx, xx, xx, 0) 109 110 /** 111 * Basic Geometry Shader intrinsics. 112 * 113 * emit_vertex implements GLSL's EmitStreamVertex() built-in. It takes a single 114 * index, which is the stream ID to write to. 115 * 116 * end_primitive implements GLSL's EndPrimitive() built-in. 117 */ 118 INTRINSIC(emit_vertex, 0, ARR(0), false, 0, 0, 1, STREAM_ID, xx, xx, 0) 119 INTRINSIC(end_primitive, 0, ARR(0), false, 0, 0, 1, STREAM_ID, xx, xx, 0) 120 121 /** 122 * Geometry Shader intrinsics with a vertex count. 123 * 124 * Alternatively, drivers may implement these intrinsics, and use 125 * nir_lower_gs_intrinsics() to convert from the basic intrinsics. 126 * 127 * These maintain a count of the number of vertices emitted, as an additional 128 * unsigned integer source. 129 */ 130 INTRINSIC(emit_vertex_with_counter, 1, ARR(1), false, 0, 0, 1, STREAM_ID, xx, xx, 0) 131 INTRINSIC(end_primitive_with_counter, 1, ARR(1), false, 0, 0, 1, STREAM_ID, xx, xx, 0) 132 INTRINSIC(set_vertex_count, 1, ARR(1), false, 0, 0, 0, xx, xx, xx, 0) 133 134 /* 135 * Atomic counters 136 * 137 * The *_var variants take an atomic_uint nir_variable, while the other, 138 * lowered, variants take a constant buffer index and register offset. 139 */ 140 141 #define ATOMIC(name, flags) \ 142 INTRINSIC(name##_var, 0, ARR(0), true, 1, 1, 0, xx, xx, xx, flags) \ 143 INTRINSIC(name, 1, ARR(1), true, 1, 0, 1, BASE, xx, xx, flags) 144 #define ATOMIC2(name) \ 145 INTRINSIC(name##_var, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) \ 146 INTRINSIC(name, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 147 #define ATOMIC3(name) \ 148 INTRINSIC(name##_var, 2, ARR(1, 1), true, 1, 1, 0, xx, xx, xx, 0) \ 149 INTRINSIC(name, 3, ARR(1, 1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 150 151 ATOMIC(atomic_counter_inc, 0) 152 ATOMIC(atomic_counter_dec, 0) 153 ATOMIC(atomic_counter_read, NIR_INTRINSIC_CAN_ELIMINATE) 154 ATOMIC2(atomic_counter_add) 155 ATOMIC2(atomic_counter_min) 156 ATOMIC2(atomic_counter_max) 157 ATOMIC2(atomic_counter_and) 158 ATOMIC2(atomic_counter_or) 159 ATOMIC2(atomic_counter_xor) 160 ATOMIC2(atomic_counter_exchange) 161 ATOMIC3(atomic_counter_comp_swap) 162 163 /* 164 * Image load, store and atomic intrinsics. 165 * 166 * All image intrinsics take an image target passed as a nir_variable. Image 167 * variables contain a number of memory and layout qualifiers that influence 168 * the semantics of the intrinsic. 169 * 170 * All image intrinsics take a four-coordinate vector and a sample index as 171 * first two sources, determining the location within the image that will be 172 * accessed by the intrinsic. Components not applicable to the image target 173 * in use are undefined. Image store takes an additional four-component 174 * argument with the value to be written, and image atomic operations take 175 * either one or two additional scalar arguments with the same meaning as in 176 * the ARB_shader_image_load_store specification. 177 */ 178 INTRINSIC(image_load, 2, ARR(4, 1), true, 4, 1, 0, xx, xx, xx, 179 NIR_INTRINSIC_CAN_ELIMINATE) 180 INTRINSIC(image_store, 3, ARR(4, 1, 4), false, 0, 1, 0, xx, xx, xx, 0) 181 INTRINSIC(image_atomic_add, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0) 182 INTRINSIC(image_atomic_min, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0) 183 INTRINSIC(image_atomic_max, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0) 184 INTRINSIC(image_atomic_and, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0) 185 INTRINSIC(image_atomic_or, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0) 186 INTRINSIC(image_atomic_xor, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0) 187 INTRINSIC(image_atomic_exchange, 3, ARR(4, 1, 1), true, 1, 1, 0, xx, xx, xx, 0) 188 INTRINSIC(image_atomic_comp_swap, 4, ARR(4, 1, 1, 1), true, 1, 1, 0, xx, xx, xx, 0) 189 INTRINSIC(image_size, 0, ARR(0), true, 4, 1, 0, xx, xx, xx, 190 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 191 INTRINSIC(image_samples, 0, ARR(0), true, 1, 1, 0, xx, xx, xx, 192 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 193 194 /* 195 * Vulkan descriptor set intrinsic 196 * 197 * The Vulkan API uses a different binding model from GL. In the Vulkan 198 * API, all external resources are represented by a tuple: 199 * 200 * (descriptor set, binding, array index) 201 * 202 * where the array index is the only thing allowed to be indirect. The 203 * vulkan_surface_index intrinsic takes the descriptor set and binding as 204 * its first two indices and the array index as its source. The third 205 * index is a nir_variable_mode in case that's useful to the backend. 206 * 207 * The intended usage is that the shader will call vulkan_surface_index to 208 * get an index and then pass that as the buffer index ubo/ssbo calls. 209 */ 210 INTRINSIC(vulkan_resource_index, 1, ARR(1), true, 1, 0, 2, 211 DESC_SET, BINDING, xx, 212 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 213 214 /* 215 * variable atomic intrinsics 216 * 217 * All of these variable atomic memory operations read a value from memory, 218 * compute a new value using one of the operations below, write the new value 219 * to memory, and return the original value read. 220 * 221 * All operations take 1 source except CompSwap that takes 2. These sources 222 * represent: 223 * 224 * 0: The data parameter to the atomic function (i.e. the value to add 225 * in shared_atomic_add, etc). 226 * 1: For CompSwap only: the second data parameter. 227 * 228 * All operations take 1 variable deref. 229 */ 230 INTRINSIC(var_atomic_add, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) 231 INTRINSIC(var_atomic_imin, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) 232 INTRINSIC(var_atomic_umin, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) 233 INTRINSIC(var_atomic_imax, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) 234 INTRINSIC(var_atomic_umax, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) 235 INTRINSIC(var_atomic_and, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) 236 INTRINSIC(var_atomic_or, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) 237 INTRINSIC(var_atomic_xor, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) 238 INTRINSIC(var_atomic_exchange, 1, ARR(1), true, 1, 1, 0, xx, xx, xx, 0) 239 INTRINSIC(var_atomic_comp_swap, 2, ARR(1, 1), true, 1, 1, 0, xx, xx, xx, 0) 240 241 /* 242 * SSBO atomic intrinsics 243 * 244 * All of the SSBO atomic memory operations read a value from memory, 245 * compute a new value using one of the operations below, write the new 246 * value to memory, and return the original value read. 247 * 248 * All operations take 3 sources except CompSwap that takes 4. These 249 * sources represent: 250 * 251 * 0: The SSBO buffer index. 252 * 1: The offset into the SSBO buffer of the variable that the atomic 253 * operation will operate on. 254 * 2: The data parameter to the atomic function (i.e. the value to add 255 * in ssbo_atomic_add, etc). 256 * 3: For CompSwap only: the second data parameter. 257 */ 258 INTRINSIC(ssbo_atomic_add, 3, ARR(1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 259 INTRINSIC(ssbo_atomic_imin, 3, ARR(1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 260 INTRINSIC(ssbo_atomic_umin, 3, ARR(1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 261 INTRINSIC(ssbo_atomic_imax, 3, ARR(1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 262 INTRINSIC(ssbo_atomic_umax, 3, ARR(1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 263 INTRINSIC(ssbo_atomic_and, 3, ARR(1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 264 INTRINSIC(ssbo_atomic_or, 3, ARR(1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 265 INTRINSIC(ssbo_atomic_xor, 3, ARR(1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 266 INTRINSIC(ssbo_atomic_exchange, 3, ARR(1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 267 INTRINSIC(ssbo_atomic_comp_swap, 4, ARR(1, 1, 1, 1), true, 1, 0, 0, xx, xx, xx, 0) 268 269 /* 270 * CS shared variable atomic intrinsics 271 * 272 * All of the shared variable atomic memory operations read a value from 273 * memory, compute a new value using one of the operations below, write the 274 * new value to memory, and return the original value read. 275 * 276 * All operations take 2 sources except CompSwap that takes 3. These 277 * sources represent: 278 * 279 * 0: The offset into the shared variable storage region that the atomic 280 * operation will operate on. 281 * 1: The data parameter to the atomic function (i.e. the value to add 282 * in shared_atomic_add, etc). 283 * 2: For CompSwap only: the second data parameter. 284 */ 285 INTRINSIC(shared_atomic_add, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 286 INTRINSIC(shared_atomic_imin, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 287 INTRINSIC(shared_atomic_umin, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 288 INTRINSIC(shared_atomic_imax, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 289 INTRINSIC(shared_atomic_umax, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 290 INTRINSIC(shared_atomic_and, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 291 INTRINSIC(shared_atomic_or, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 292 INTRINSIC(shared_atomic_xor, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 293 INTRINSIC(shared_atomic_exchange, 2, ARR(1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 294 INTRINSIC(shared_atomic_comp_swap, 3, ARR(1, 1, 1), true, 1, 0, 1, BASE, xx, xx, 0) 295 296 /* Used by nir_builder.h to generate loader helpers for the system values. */ 297 #ifndef DEFINE_SYSTEM_VALUE 298 #define DEFINE_SYSTEM_VALUE(name) 299 #endif 300 301 #define SYSTEM_VALUE(name, components, num_indices, idx0, idx1, idx2) \ 302 DEFINE_SYSTEM_VALUE(name) \ 303 INTRINSIC(load_##name, 0, ARR(0), true, components, 0, num_indices, \ 304 idx0, idx1, idx2, \ 305 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 306 307 SYSTEM_VALUE(front_face, 1, 0, xx, xx, xx) 308 SYSTEM_VALUE(vertex_id, 1, 0, xx, xx, xx) 309 SYSTEM_VALUE(vertex_id_zero_base, 1, 0, xx, xx, xx) 310 SYSTEM_VALUE(base_vertex, 1, 0, xx, xx, xx) 311 SYSTEM_VALUE(instance_id, 1, 0, xx, xx, xx) 312 SYSTEM_VALUE(base_instance, 1, 0, xx, xx, xx) 313 SYSTEM_VALUE(draw_id, 1, 0, xx, xx, xx) 314 SYSTEM_VALUE(sample_id, 1, 0, xx, xx, xx) 315 SYSTEM_VALUE(sample_pos, 2, 0, xx, xx, xx) 316 SYSTEM_VALUE(sample_mask_in, 1, 0, xx, xx, xx) 317 SYSTEM_VALUE(primitive_id, 1, 0, xx, xx, xx) 318 SYSTEM_VALUE(invocation_id, 1, 0, xx, xx, xx) 319 SYSTEM_VALUE(tess_coord, 3, 0, xx, xx, xx) 320 SYSTEM_VALUE(tess_level_outer, 4, 0, xx, xx, xx) 321 SYSTEM_VALUE(tess_level_inner, 2, 0, xx, xx, xx) 322 SYSTEM_VALUE(patch_vertices_in, 1, 0, xx, xx, xx) 323 SYSTEM_VALUE(local_invocation_id, 3, 0, xx, xx, xx) 324 SYSTEM_VALUE(local_invocation_index, 1, 0, xx, xx, xx) 325 SYSTEM_VALUE(work_group_id, 3, 0, xx, xx, xx) 326 SYSTEM_VALUE(user_clip_plane, 4, 1, UCP_ID, xx, xx) 327 SYSTEM_VALUE(num_work_groups, 3, 0, xx, xx, xx) 328 SYSTEM_VALUE(helper_invocation, 1, 0, xx, xx, xx) 329 SYSTEM_VALUE(channel_num, 1, 0, xx, xx, xx) 330 SYSTEM_VALUE(alpha_ref_float, 1, 0, xx, xx, xx) 331 SYSTEM_VALUE(layer_id, 1, 0, xx, xx, xx) 332 333 /* Blend constant color values. Float values are clamped. */ 334 SYSTEM_VALUE(blend_const_color_r_float, 1, 0, xx, xx, xx) 335 SYSTEM_VALUE(blend_const_color_g_float, 1, 0, xx, xx, xx) 336 SYSTEM_VALUE(blend_const_color_b_float, 1, 0, xx, xx, xx) 337 SYSTEM_VALUE(blend_const_color_a_float, 1, 0, xx, xx, xx) 338 SYSTEM_VALUE(blend_const_color_rgba8888_unorm, 1, 0, xx, xx, xx) 339 SYSTEM_VALUE(blend_const_color_aaaa8888_unorm, 1, 0, xx, xx, xx) 340 341 /** 342 * Barycentric coordinate intrinsics. 343 * 344 * These set up the barycentric coordinates for a particular interpolation. 345 * The first three are for the simple cases: pixel, centroid, or per-sample 346 * (at gl_SampleID). The next two handle interpolating at a specified 347 * sample location, or interpolating with a vec2 offset, 348 * 349 * The interp_mode index should be either the INTERP_MODE_SMOOTH or 350 * INTERP_MODE_NOPERSPECTIVE enum values. 351 * 352 * The vec2 value produced by these intrinsics is intended for use as the 353 * barycoord source of a load_interpolated_input intrinsic. 354 */ 355 356 #define BARYCENTRIC(name, sources, source_components) \ 357 INTRINSIC(load_barycentric_##name, sources, ARR(source_components), \ 358 true, 2, 0, 1, INTERP_MODE, xx, xx, \ 359 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 360 361 /* no sources. const_index[] = { interp_mode } */ 362 BARYCENTRIC(pixel, 0, 0) 363 BARYCENTRIC(centroid, 0, 0) 364 BARYCENTRIC(sample, 0, 0) 365 /* src[] = { sample_id }. const_index[] = { interp_mode } */ 366 BARYCENTRIC(at_sample, 1, 1) 367 /* src[] = { offset.xy }. const_index[] = { interp_mode } */ 368 BARYCENTRIC(at_offset, 1, 2) 369 370 /* 371 * Load operations pull data from some piece of GPU memory. All load 372 * operations operate in terms of offsets into some piece of theoretical 373 * memory. Loads from externally visible memory (UBO and SSBO) simply take a 374 * byte offset as a source. Loads from opaque memory (uniforms, inputs, etc.) 375 * take a base+offset pair where the base (const_index[0]) gives the location 376 * of the start of the variable being loaded and and the offset source is a 377 * offset into that variable. 378 * 379 * Uniform load operations have a second "range" index that specifies the 380 * range (starting at base) of the data from which we are loading. If 381 * const_index[1] == 0, then the range is unknown. 382 * 383 * Some load operations such as UBO/SSBO load and per_vertex loads take an 384 * additional source to specify which UBO/SSBO/vertex to load from. 385 * 386 * The exact address type depends on the lowering pass that generates the 387 * load/store intrinsics. Typically, this is vec4 units for things such as 388 * varying slots and float units for fragment shader inputs. UBO and SSBO 389 * offsets are always in bytes. 390 */ 391 392 #define LOAD(name, srcs, num_indices, idx0, idx1, idx2, flags) \ 393 INTRINSIC(load_##name, srcs, ARR(1, 1, 1, 1), true, 0, 0, num_indices, idx0, idx1, idx2, flags) 394 395 /* src[] = { offset }. const_index[] = { base, range } */ 396 LOAD(uniform, 1, 2, BASE, RANGE, xx, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 397 /* src[] = { buffer_index, offset }. No const_index */ 398 LOAD(ubo, 2, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 399 /* src[] = { offset }. const_index[] = { base, component } */ 400 LOAD(input, 1, 2, BASE, COMPONENT, xx, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 401 /* src[] = { vertex, offset }. const_index[] = { base, component } */ 402 LOAD(per_vertex_input, 2, 2, BASE, COMPONENT, xx, NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 403 /* src[] = { barycoord, offset }. const_index[] = { base, component } */ 404 INTRINSIC(load_interpolated_input, 2, ARR(2, 1), true, 0, 0, 405 2, BASE, COMPONENT, xx, 406 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 407 408 /* src[] = { buffer_index, offset }. No const_index */ 409 LOAD(ssbo, 2, 0, xx, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE) 410 /* src[] = { offset }. const_index[] = { base, component } */ 411 LOAD(output, 1, 1, BASE, COMPONENT, xx, NIR_INTRINSIC_CAN_ELIMINATE) 412 /* src[] = { vertex, offset }. const_index[] = { base, component } */ 413 LOAD(per_vertex_output, 2, 1, BASE, COMPONENT, xx, NIR_INTRINSIC_CAN_ELIMINATE) 414 /* src[] = { offset }. const_index[] = { base } */ 415 LOAD(shared, 1, 1, BASE, xx, xx, NIR_INTRINSIC_CAN_ELIMINATE) 416 /* src[] = { offset }. const_index[] = { base, range } */ 417 LOAD(push_constant, 1, 2, BASE, RANGE, xx, 418 NIR_INTRINSIC_CAN_ELIMINATE | NIR_INTRINSIC_CAN_REORDER) 419 420 /* 421 * Stores work the same way as loads, except now the first source is the value 422 * to store and the second (and possibly third) source specify where to store 423 * the value. SSBO and shared memory stores also have a write mask as 424 * const_index[0]. 425 */ 426 427 #define STORE(name, srcs, num_indices, idx0, idx1, idx2, flags) \ 428 INTRINSIC(store_##name, srcs, ARR(0, 1, 1, 1), false, 0, 0, num_indices, idx0, idx1, idx2, flags) 429 430 /* src[] = { value, offset }. const_index[] = { base, write_mask, component } */ 431 STORE(output, 2, 3, BASE, WRMASK, COMPONENT, 0) 432 /* src[] = { value, vertex, offset }. 433 * const_index[] = { base, write_mask, component } 434 */ 435 STORE(per_vertex_output, 3, 3, BASE, WRMASK, COMPONENT, 0) 436 /* src[] = { value, block_index, offset }. const_index[] = { write_mask } */ 437 STORE(ssbo, 3, 1, WRMASK, xx, xx, 0) 438 /* src[] = { value, offset }. const_index[] = { base, write_mask } */ 439 STORE(shared, 2, 2, BASE, WRMASK, xx, 0) 440 441 LAST_INTRINSIC(store_shared) 442 443 #undef DEFINE_SYSTEM_VALUE 444 #undef INTRINSIC 445 #undef LAST_INTRINSIC 446
