src/gallium/drivers/radeonsi/si_shader.h

   1 /*
   2  * Copyright 2012 Advanced Micro Devices, Inc.
   3  * All Rights Reserved.
   4  *
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   9  * license, and/or sell copies of the Software, and to permit persons to whom
  10  * the Software is furnished to do so, subject to the following conditions:
  11  *
  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
  14  * Software.
  15  *
  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 NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  20  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  21  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  22  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /* The compiler middle-end architecture: Explaining (non-)monolithic shaders
  26  * -------------------------------------------------------------------------
  27  *
  28  * Typically, there is one-to-one correspondence between API and HW shaders,
  29  * that is, for every API shader, there is exactly one shader binary in
  30  * the driver.
  31  *
  32  * The problem with that is that we also have to emulate some API states
  33  * (e.g. alpha-test, and many others) in shaders too. The two obvious ways
  34  * to deal with it are:
  35  * - each shader has multiple variants for each combination of emulated states,
  36  *   and the variants are compiled on demand, possibly relying on a shader
  37  *   cache for good performance
  38  * - patch shaders at the binary level
  39  *
  40  * This driver uses something completely different. The emulated states are
  41  * usually implemented at the beginning or end of shaders. Therefore, we can
  42  * split the shader into 3 parts:
  43  * - prolog part (shader code dependent on states)
  44  * - main part (the API shader)
  45  * - epilog part (shader code dependent on states)
  46  *
  47  * Each part is compiled as a separate shader and the final binaries are
  48  * concatenated. This type of shader is called non-monolithic, because it
  49  * consists of multiple independent binaries. Creating a new shader variant
  50  * is therefore only a concatenation of shader parts (binaries) and doesn't
  51  * involve any compilation. The main shader parts are the only parts that are
  52  * compiled when applications create shader objects. The prolog and epilog
  53  * parts are compiled on the first use and saved, so that their binaries can
  54  * be reused by many other shaders.
  55  *
  56  * One of the roles of the prolog part is to compute vertex buffer addresses
  57  * for vertex shaders. A few of the roles of the epilog part are color buffer
  58  * format conversions in pixel shaders that we have to do manually, and write
  59  * tessellation factors in tessellation control shaders. The prolog and epilog
  60  * have many other important responsibilities in various shader stages.
  61  * They don't just "emulate legacy stuff".
  62  *
  63  * Monolithic shaders are shaders where the parts are combined before LLVM
  64  * compilation, and the whole thing is compiled and optimized as one unit with
  65  * one binary on the output. The result is the same as the non-monolithic
  66  * shader, but the final code can be better, because LLVM can optimize across
  67  * all shader parts. Monolithic shaders aren't usually used except for these
  68  * special cases:
  69  *
  70  * 1) Some rarely-used states require modification of the main shader part
  71  *    itself, and in such cases, only the monolithic shader variant is
  72  *    compiled, and that's always done on the first use.
  73  *
  74  * 2) When we do cross-stage optimizations for separate shader objects and
  75  *    e.g. eliminate unused shader varyings, the resulting optimized shader
  76  *    variants are always compiled as monolithic shaders, and always
  77  *    asynchronously (i.e. not stalling ongoing rendering). We call them
  78  *    "optimized monolithic" shaders. The important property here is that
  79  *    the non-monolithic unoptimized shader variant is always available for use
  80  *    when the asynchronous compilation of the optimized shader is not done
  81  *    yet.
  82  *
  83  * Starting with GFX9 chips, some shader stages are merged, and the number of
  84  * shader parts per shader increased. The complete new list of shader parts is:
  85  * - 1st shader: prolog part
  86  * - 1st shader: main part
  87  * - 2nd shader: prolog part
  88  * - 2nd shader: main part
  89  * - 2nd shader: epilog part
  90  */
  91
  92 /* How linking shader inputs and outputs between vertex, tessellation, and
  93  * geometry shaders works.
  94  *
  95  * Inputs and outputs between shaders are stored in a buffer. This buffer
  96  * lives in LDS (typical case for tessellation), but it can also live
  97  * in memory (ESGS). Each input or output has a fixed location within a vertex.
  98  * The highest used input or output determines the stride between vertices.
  99  *
 100  * Since GS and tessellation are only possible in the OpenGL core profile,
 101  * only these semantics are valid for per-vertex data:
 102  *
 103  *   Name             Location
 104  *
 105  *   POSITION         0
 106  *   PSIZE            1
 107  *   CLIPDIST0..1     2..3
 108  *   CULLDIST0..1     (not implemented)
 109  *   GENERIC0..31     4..35
 110  *
 111  * For example, a shader only writing GENERIC0 has the output stride of 5.
 112  *
 113  * Only these semantics are valid for per-patch data:
 114  *
 115  *   Name             Location
 116  *
 117  *   TESSOUTER        0
 118  *   TESSINNER        1
 119  *   PATCH0..29       2..31
 120  *
 121  * That's how independent shaders agree on input and output locations.
 122  * The si_shader_io_get_unique_index function assigns the locations.
 123  *
 124  * For tessellation, other required information for calculating the input and
 125  * output addresses like the vertex stride, the patch stride, and the offsets
 126  * where per-vertex and per-patch data start, is passed to the shader via
 127  * user data SGPRs. The offsets and strides are calculated at draw time and
 128  * aren't available at compile time.
 129  */
 130
 131 #ifndef SI_SHADER_H
 132 #define SI_SHADER_H
 133
 134 #include <llvm-c/Core.h> /* LLVMModuleRef */
 135 #include <llvm-c/TargetMachine.h>
 136 #include "tgsi/tgsi_scan.h"
 137 #include "util/u_inlines.h"
 138 #include "util/u_queue.h"
 139
 140 #include "ac_binary.h"
 141 #include "ac_llvm_build.h"
 142 #include "ac_llvm_util.h"
 143
 144 #include <stdio.h>
 145
 146 struct nir_shader;
 147 struct si_shader;
 148 struct si_context;
 149
 150 #define SI_MAX_ATTRIBS          16
 151 #define SI_MAX_VS_OUTPUTS       40
 152
 153 /* Shader IO unique indices are supported for TGSI_SEMANTIC_GENERIC with an
 154  * index smaller than this.
 155  */
 156 #define SI_MAX_IO_GENERIC       43
 157
 158 /* SGPR user data indices */
 159 enum {
 160         SI_SGPR_RW_BUFFERS,  /* rings (& stream-out, VS only) */
 161         SI_SGPR_BINDLESS_SAMPLERS_AND_IMAGES,
 162         SI_SGPR_CONST_AND_SHADER_BUFFERS, /* or just a constant buffer 0 pointer */
 163         SI_SGPR_SAMPLERS_AND_IMAGES,
 164         SI_NUM_RESOURCE_SGPRS,
 165
 166         /* API VS, TES without GS, GS copy shader */
 167         SI_SGPR_VS_STATE_BITS = SI_NUM_RESOURCE_SGPRS,
 168         SI_NUM_VS_STATE_RESOURCE_SGPRS,
 169
 170         /* all VS variants */
 171         SI_SGPR_BASE_VERTEX = SI_NUM_VS_STATE_RESOURCE_SGPRS,
 172         SI_SGPR_START_INSTANCE,
 173         SI_SGPR_DRAWID,
 174         SI_VS_NUM_USER_SGPR,
 175
 176         SI_SGPR_VS_BLIT_DATA = SI_SGPR_CONST_AND_SHADER_BUFFERS,
 177
 178         /* TES */
 179         SI_SGPR_TES_OFFCHIP_LAYOUT = SI_NUM_VS_STATE_RESOURCE_SGPRS,
 180         SI_SGPR_TES_OFFCHIP_ADDR,
 181         SI_TES_NUM_USER_SGPR,
 182
 183         /* GFX6-8: TCS only */
 184         GFX6_SGPR_TCS_OFFCHIP_LAYOUT = SI_NUM_RESOURCE_SGPRS,
 185         GFX6_SGPR_TCS_OUT_OFFSETS,
 186         GFX6_SGPR_TCS_OUT_LAYOUT,
 187         GFX6_SGPR_TCS_IN_LAYOUT,
 188         GFX6_TCS_NUM_USER_SGPR,
 189
 190         /* GFX9: Merged shaders. */
 191         /* 2ND_CONST_AND_SHADER_BUFFERS is set in USER_DATA_ADDR_LO (SGPR0). */
 192         /* 2ND_SAMPLERS_AND_IMAGES is set in USER_DATA_ADDR_HI (SGPR1). */
 193         GFX9_MERGED_NUM_USER_SGPR = SI_VS_NUM_USER_SGPR,
 194
 195         /* GFX9: Merged LS-HS (VS-TCS) only. */
 196         GFX9_SGPR_TCS_OFFCHIP_LAYOUT = GFX9_MERGED_NUM_USER_SGPR,
 197         GFX9_SGPR_TCS_OUT_OFFSETS,
 198         GFX9_SGPR_TCS_OUT_LAYOUT,
 199         GFX9_TCS_NUM_USER_SGPR,
 200
 201         /* GS limits */
 202         GFX6_GS_NUM_USER_SGPR = SI_NUM_RESOURCE_SGPRS,
 203         GFX9_VSGS_NUM_USER_SGPR = SI_VS_NUM_USER_SGPR,
 204         GFX9_TESGS_NUM_USER_SGPR = SI_TES_NUM_USER_SGPR,
 205         SI_GSCOPY_NUM_USER_SGPR = SI_NUM_VS_STATE_RESOURCE_SGPRS,
 206
 207         /* PS only */
 208         SI_SGPR_ALPHA_REF       = SI_NUM_RESOURCE_SGPRS,
 209         SI_PS_NUM_USER_SGPR,
 210 };
 211
 212 /* LLVM function parameter indices */
 213 enum {
 214         SI_NUM_RESOURCE_PARAMS = 4,
 215
 216         /* PS only parameters */
 217         SI_PARAM_ALPHA_REF = SI_NUM_RESOURCE_PARAMS,
 218         SI_PARAM_PRIM_MASK,
 219         SI_PARAM_PERSP_SAMPLE,
 220         SI_PARAM_PERSP_CENTER,
 221         SI_PARAM_PERSP_CENTROID,
 222         SI_PARAM_PERSP_PULL_MODEL,
 223         SI_PARAM_LINEAR_SAMPLE,
 224         SI_PARAM_LINEAR_CENTER,
 225         SI_PARAM_LINEAR_CENTROID,
 226         SI_PARAM_LINE_STIPPLE_TEX,
 227         SI_PARAM_POS_X_FLOAT,
 228         SI_PARAM_POS_Y_FLOAT,
 229         SI_PARAM_POS_Z_FLOAT,
 230         SI_PARAM_POS_W_FLOAT,
 231         SI_PARAM_FRONT_FACE,
 232         SI_PARAM_ANCILLARY,
 233         SI_PARAM_SAMPLE_COVERAGE,
 234         SI_PARAM_POS_FIXED_PT,
 235
 236         SI_NUM_PARAMS = SI_PARAM_POS_FIXED_PT + 9, /* +8 for COLOR[0..1] */
 237 };
 238
 239 /* Fields of driver-defined VS state SGPR. */
 240 /* Clamp vertex color output (only used in VS as VS). */
 241 #define S_VS_STATE_CLAMP_VERTEX_COLOR(x)        (((unsigned)(x) & 0x1) << 0)
 242 #define C_VS_STATE_CLAMP_VERTEX_COLOR           0xFFFFFFFE
 243 #define S_VS_STATE_INDEXED(x)                   (((unsigned)(x) & 0x1) << 1)
 244 #define C_VS_STATE_INDEXED                      0xFFFFFFFD
 245 #define S_VS_STATE_LS_OUT_PATCH_SIZE(x)         (((unsigned)(x) & 0x1FFF) << 8)
 246 #define C_VS_STATE_LS_OUT_PATCH_SIZE            0xFFE000FF
 247 #define S_VS_STATE_LS_OUT_VERTEX_SIZE(x)        (((unsigned)(x) & 0xFF) << 24)
 248 #define C_VS_STATE_LS_OUT_VERTEX_SIZE           0x00FFFFFF
 249
 250 /* SI-specific system values. */
 251 enum {
 252         /* Values from set_tess_state. */
 253         TGSI_SEMANTIC_DEFAULT_TESSOUTER_SI = TGSI_SEMANTIC_COUNT,
 254         TGSI_SEMANTIC_DEFAULT_TESSINNER_SI,
 255
 256         /* Up to 4 dwords in user SGPRs for compute shaders. */
 257         TGSI_SEMANTIC_CS_USER_DATA,
 258 };
 259
 260 enum {
 261         /* Use a property enum that CS wouldn't use. */
 262         TGSI_PROPERTY_CS_LOCAL_SIZE = TGSI_PROPERTY_FS_COORD_ORIGIN,
 263
 264         /* The number of used user data dwords in the range [1, 4]. */
 265         TGSI_PROPERTY_CS_USER_DATA_DWORDS = TGSI_PROPERTY_FS_COORD_PIXEL_CENTER,
 266
 267         /* Use a property enum that VS wouldn't use. */
 268         TGSI_PROPERTY_VS_BLIT_SGPRS = TGSI_PROPERTY_FS_COORD_ORIGIN,
 269
 270         /* These represent the number of SGPRs the shader uses. */
 271         SI_VS_BLIT_SGPRS_POS = 3,
 272         SI_VS_BLIT_SGPRS_POS_COLOR = 7,
 273         SI_VS_BLIT_SGPRS_POS_TEXCOORD = 9,
 274 };
 275
 276 /* For VS shader key fix_fetch. */
 277 enum {
 278         SI_FIX_FETCH_NONE = 0,
 279         SI_FIX_FETCH_A2_SNORM,
 280         SI_FIX_FETCH_A2_SSCALED,
 281         SI_FIX_FETCH_A2_SINT,
 282         SI_FIX_FETCH_RGBA_32_UNORM,
 283         SI_FIX_FETCH_RGBX_32_UNORM,
 284         SI_FIX_FETCH_RGBA_32_SNORM,
 285         SI_FIX_FETCH_RGBX_32_SNORM,
 286         SI_FIX_FETCH_RGBA_32_USCALED,
 287         SI_FIX_FETCH_RGBA_32_SSCALED,
 288         SI_FIX_FETCH_RGBA_32_FIXED,
 289         SI_FIX_FETCH_RGBX_32_FIXED,
 290         SI_FIX_FETCH_RG_64_FLOAT,
 291         SI_FIX_FETCH_RGB_64_FLOAT,
 292         SI_FIX_FETCH_RGBA_64_FLOAT,
 293         SI_FIX_FETCH_RGB_8,     /* A = 1.0 */
 294         SI_FIX_FETCH_RGB_8_INT, /* A = 1 */
 295         SI_FIX_FETCH_RGB_16,
 296         SI_FIX_FETCH_RGB_16_INT,
 297 };
 298
 299 struct si_shader;
 300
 301 /* State of the context creating the shader object. */
 302 struct si_compiler_ctx_state {
 303         /* Should only be used by si_init_shader_selector_async and
 304          * si_build_shader_variant if thread_index == -1 (non-threaded). */
 305         struct ac_llvm_compiler         *compiler;
 306
 307         /* Used if thread_index == -1 or if debug.async is true. */
 308         struct pipe_debug_callback      debug;
 309
 310         /* Used for creating the log string for gallium/ddebug. */
 311         bool                            is_debug_context;
 312 };
 313
 314 /* A shader selector is a gallium CSO and contains shader variants and
 315  * binaries for one TGSI program. This can be shared by multiple contexts.
 316  */
 317 struct si_shader_selector {
 318         struct pipe_reference   reference;
 319         struct si_screen        *screen;
 320         struct util_queue_fence ready;
 321         struct si_compiler_ctx_state compiler_ctx_state;
 322
 323         mtx_t           mutex;
 324         struct si_shader        *first_variant; /* immutable after the first variant */
 325         struct si_shader        *last_variant; /* mutable */
 326
 327         /* The compiled TGSI shader expecting a prolog and/or epilog (not
 328          * uploaded to a buffer).
 329          */
 330         struct si_shader        *main_shader_part;
 331         struct si_shader        *main_shader_part_ls; /* as_ls is set in the key */
 332         struct si_shader        *main_shader_part_es; /* as_es is set in the key */
 333
 334         struct si_shader        *gs_copy_shader;
 335
 336         struct tgsi_token       *tokens;
 337         struct nir_shader       *nir;
 338         struct pipe_stream_output_info  so;
 339         struct tgsi_shader_info         info;
 340         struct tgsi_tessctrl_info       tcs_info;
 341
 342         /* PIPE_SHADER_[VERTEX|FRAGMENT|...] */
 343         unsigned        type;
 344         bool            vs_needs_prolog;
 345         bool            force_correct_derivs_after_kill;
 346         unsigned        pa_cl_vs_out_cntl;
 347         ubyte           clipdist_mask;
 348         ubyte           culldist_mask;
 349
 350         /* ES parameters. */
 351         unsigned        esgs_itemsize; /* vertex stride */
 352         unsigned        lshs_vertex_stride;
 353
 354         /* GS parameters. */
 355         unsigned        gs_input_verts_per_prim;
 356         unsigned        gs_output_prim;
 357         unsigned        gs_max_out_vertices;
 358         unsigned        gs_num_invocations;
 359         unsigned        max_gs_stream; /* count - 1 */
 360         unsigned        gsvs_vertex_size;
 361         unsigned        max_gsvs_emit_size;
 362         unsigned        enabled_streamout_buffer_mask;
 363
 364         /* PS parameters. */
 365         unsigned        color_attr_index[2];
 366         unsigned        db_shader_control;
 367         /* Set 0xf or 0x0 (4 bits) per each written output.
 368          * ANDed with spi_shader_col_format.
 369          */
 370         unsigned        colors_written_4bit;
 371
 372         uint64_t        outputs_written_before_ps; /* "get_unique_index" bits */
 373         uint64_t        outputs_written;        /* "get_unique_index" bits */
 374         uint32_t        patch_outputs_written;  /* "get_unique_index_patch" bits */
 375
 376         uint64_t        inputs_read;            /* "get_unique_index" bits */
 377
 378         /* bitmasks of used descriptor slots */
 379         uint32_t        active_const_and_shader_buffers;
 380         uint64_t        active_samplers_and_images;
 381 };
 382
 383 /* Valid shader configurations:
 384  *
 385  * API shaders       VS | TCS | TES | GS |pass| PS
 386  * are compiled as:     |     |     |    |thru|
 387  *                      |     |     |    |    |
 388  * Only VS & PS:     VS |     |     |    |    | PS
 389  * GFX6 - with GS:   ES |     |     | GS | VS | PS
 390  *      - with tess: LS | HS  | VS  |    |    | PS
 391  *      - with both: LS | HS  | ES  | GS | VS | PS
 392  * GFX9 - with GS:   -> |     |     | GS | VS | PS
 393  *      - with tess: -> | HS  | VS  |    |    | PS
 394  *      - with both: -> | HS  | ->  | GS | VS | PS
 395  *
 396  * -> = merged with the next stage
 397  */
 398
 399 /* Use the byte alignment for all following structure members for optimal
 400  * shader key memory footprint.
 401  */
 402 #pragma pack(push, 1)
 403
 404 /* Common VS bits between the shader key and the prolog key. */
 405 struct si_vs_prolog_bits {
 406         /* - If neither "is_one" nor "is_fetched" has a bit set, the instance
 407          *   divisor is 0.
 408          * - If "is_one" has a bit set, the instance divisor is 1.
 409          * - If "is_fetched" has a bit set, the instance divisor will be loaded
 410          *   from the constant buffer.
 411          */
 412         uint16_t        instance_divisor_is_one;     /* bitmask of inputs */
 413         uint16_t        instance_divisor_is_fetched; /* bitmask of inputs */
 414         unsigned        ls_vgpr_fix:1;
 415 };
 416
 417 /* Common TCS bits between the shader key and the epilog key. */
 418 struct si_tcs_epilog_bits {
 419         unsigned        prim_mode:3;
 420         unsigned        invoc0_tess_factors_are_def:1;
 421         unsigned        tes_reads_tess_factors:1;
 422 };
 423
 424 struct si_gs_prolog_bits {
 425         unsigned        tri_strip_adj_fix:1;
 426         unsigned        gfx9_prev_is_vs:1;
 427 };
 428
 429 /* Common PS bits between the shader key and the prolog key. */
 430 struct si_ps_prolog_bits {
 431         unsigned        color_two_side:1;
 432         unsigned        flatshade_colors:1;
 433         unsigned        poly_stipple:1;
 434         unsigned        force_persp_sample_interp:1;
 435         unsigned        force_linear_sample_interp:1;
 436         unsigned        force_persp_center_interp:1;
 437         unsigned        force_linear_center_interp:1;
 438         unsigned        bc_optimize_for_persp:1;
 439         unsigned        bc_optimize_for_linear:1;
 440         unsigned        samplemask_log_ps_iter:3;
 441 };
 442
 443 /* Common PS bits between the shader key and the epilog key. */
 444 struct si_ps_epilog_bits {
 445         unsigned        spi_shader_col_format;
 446         unsigned        color_is_int8:8;
 447         unsigned        color_is_int10:8;
 448         unsigned        last_cbuf:3;
 449         unsigned        alpha_func:3;
 450         unsigned        alpha_to_one:1;
 451         unsigned        poly_line_smoothing:1;
 452         unsigned        clamp_color:1;
 453 };
 454
 455 union si_shader_part_key {
 456         struct {
 457                 struct si_vs_prolog_bits states;
 458                 unsigned        num_input_sgprs:6;
 459                 /* For merged stages such as LS-HS, HS input VGPRs are first. */
 460                 unsigned        num_merged_next_stage_vgprs:3;
 461                 unsigned        last_input:4;
 462                 unsigned        as_ls:1;
 463                 unsigned        as_es:1;
 464                 /* Prologs for monolithic shaders shouldn't set EXEC. */
 465                 unsigned        is_monolithic:1;
 466         } vs_prolog;
 467         struct {
 468                 struct si_tcs_epilog_bits states;
 469         } tcs_epilog;
 470         struct {
 471                 struct si_gs_prolog_bits states;
 472                 /* Prologs of monolithic shaders shouldn't set EXEC. */
 473                 unsigned        is_monolithic:1;
 474         } gs_prolog;
 475         struct {
 476                 struct si_ps_prolog_bits states;
 477                 unsigned        num_input_sgprs:6;
 478                 unsigned        num_input_vgprs:5;
 479                 /* Color interpolation and two-side color selection. */
 480                 unsigned        colors_read:8; /* color input components read */
 481                 unsigned        num_interp_inputs:5; /* BCOLOR is at this location */
 482                 unsigned        face_vgpr_index:5;
 483                 unsigned        ancillary_vgpr_index:5;
 484                 unsigned        wqm:1;
 485                 char            color_attr_index[2];
 486                 signed char     color_interp_vgpr_index[2]; /* -1 == constant */
 487         } ps_prolog;
 488         struct {
 489                 struct si_ps_epilog_bits states;
 490                 unsigned        colors_written:8;
 491                 unsigned        writes_z:1;
 492                 unsigned        writes_stencil:1;
 493                 unsigned        writes_samplemask:1;
 494         } ps_epilog;
 495 };
 496
 497 struct si_shader_key {
 498         /* Prolog and epilog flags. */
 499         union {
 500                 struct {
 501                         struct si_vs_prolog_bits prolog;
 502                 } vs;
 503                 struct {
 504                         struct si_vs_prolog_bits ls_prolog; /* for merged LS-HS */
 505                         struct si_shader_selector *ls;   /* for merged LS-HS */
 506                         struct si_tcs_epilog_bits epilog;
 507                 } tcs; /* tessellation control shader */
 508                 struct {
 509                         struct si_vs_prolog_bits vs_prolog; /* for merged ES-GS */
 510                         struct si_shader_selector *es;   /* for merged ES-GS */
 511                         struct si_gs_prolog_bits prolog;
 512                 } gs;
 513                 struct {
 514                         struct si_ps_prolog_bits prolog;
 515                         struct si_ps_epilog_bits epilog;
 516                 } ps;
 517         } part;
 518
 519         /* These two are initially set according to the NEXT_SHADER property,
 520          * or guessed if the property doesn't seem correct.
 521          */
 522         unsigned as_es:1; /* export shader, which precedes GS */
 523         unsigned as_ls:1; /* local shader, which precedes TCS */
 524
 525         /* Flags for monolithic compilation only. */
 526         struct {
 527                 /* One byte for every input: SI_FIX_FETCH_* enums. */
 528                 uint8_t         vs_fix_fetch[SI_MAX_ATTRIBS];
 529
 530                 union {
 531                         uint64_t        ff_tcs_inputs_to_copy; /* for fixed-func TCS */
 532                         /* When PS needs PrimID and GS is disabled. */
 533                         unsigned        vs_export_prim_id:1;
 534                         struct {
 535                                 unsigned interpolate_at_sample_force_center:1;
 536                                 unsigned fbfetch_msaa;
 537                                 unsigned fbfetch_is_1D;
 538                                 unsigned fbfetch_layered;
 539                         } ps;
 540                 } u;
 541         } mono;
 542
 543         /* Optimization flags for asynchronous compilation only. */
 544         struct {
 545                 /* For HW VS (it can be VS, TES, GS) */
 546                 uint64_t        kill_outputs; /* "get_unique_index" bits */
 547                 unsigned        clip_disable:1;
 548
 549                 /* For shaders where monolithic variants have better code.
 550                  *
 551                  * This is a flag that has no effect on code generation,
 552                  * but forces monolithic shaders to be used as soon as
 553                  * possible, because it's in the "opt" group.
 554                  */
 555                 unsigned        prefer_mono:1;
 556         } opt;
 557 };
 558
 559 /* Restore the pack alignment to default. */
 560 #pragma pack(pop)
 561
 562 struct si_shader_config {
 563         unsigned                        num_sgprs;
 564         unsigned                        num_vgprs;
 565         unsigned                        spilled_sgprs;
 566         unsigned                        spilled_vgprs;
 567         unsigned                        private_mem_vgprs;
 568         unsigned                        lds_size;
 569         unsigned                        max_simd_waves;
 570         unsigned                        spi_ps_input_ena;
 571         unsigned                        spi_ps_input_addr;
 572         unsigned                        float_mode;
 573         unsigned                        scratch_bytes_per_wave;
 574         unsigned                        rsrc1;
 575         unsigned                        rsrc2;
 576 };
 577
 578 /* GCN-specific shader info. */
 579 struct si_shader_info {
 580         ubyte                   vs_output_param_offset[SI_MAX_VS_OUTPUTS];
 581         ubyte                   num_input_sgprs;
 582         ubyte                   num_input_vgprs;
 583         signed char             face_vgpr_index;
 584         signed char             ancillary_vgpr_index;
 585         bool                    uses_instanceid;
 586         ubyte                   nr_pos_exports;
 587         ubyte                   nr_param_exports;
 588 };
 589
 590 struct si_shader {
 591         struct si_compiler_ctx_state    compiler_ctx_state;
 592
 593         struct si_shader_selector       *selector;
 594         struct si_shader_selector       *previous_stage_sel; /* for refcounting */
 595         struct si_shader                *next_variant;
 596
 597         struct si_shader_part           *prolog;
 598         struct si_shader                *previous_stage; /* for GFX9 */
 599         struct si_shader_part           *prolog2;
 600         struct si_shader_part           *epilog;
 601
 602         struct si_pm4_state             *pm4;
 603         struct r600_resource            *bo;
 604         struct r600_resource            *scratch_bo;
 605         struct si_shader_key            key;
 606         struct util_queue_fence         ready;
 607         bool                            compilation_failed;
 608         bool                            is_monolithic;
 609         bool                            is_optimized;
 610         bool                            is_binary_shared;
 611         bool                            is_gs_copy_shader;
 612
 613         /* The following data is all that's needed for binary shaders. */
 614         struct ac_shader_binary binary;
 615         struct si_shader_config         config;
 616         struct si_shader_info           info;
 617
 618         /* Shader key + LLVM IR + disassembly + statistics.
 619          * Generated for debug contexts only.
 620          */
 621         char                            *shader_log;
 622         size_t                          shader_log_size;
 623
 624         /* For save precompute context registers values. */
 625         union {
 626                 struct {
 627                         unsigned        vgt_gsvs_ring_offset_1;
 628                         unsigned        vgt_gsvs_ring_offset_2;
 629                         unsigned        vgt_gsvs_ring_offset_3;
 630                         unsigned        vgt_gs_out_prim_type;
 631                         unsigned        vgt_gsvs_ring_itemsize;
 632                         unsigned        vgt_gs_max_vert_out;
 633                         unsigned        vgt_gs_vert_itemsize;
 634                         unsigned        vgt_gs_vert_itemsize_1;
 635                         unsigned        vgt_gs_vert_itemsize_2;
 636                         unsigned        vgt_gs_vert_itemsize_3;
 637                         unsigned        vgt_gs_instance_cnt;
 638                         unsigned        vgt_gs_onchip_cntl;
 639                         unsigned        vgt_gs_max_prims_per_subgroup;
 640                         unsigned        vgt_esgs_ring_itemsize;
 641                 } gs;
 642
 643                 struct {
 644                         unsigned        vgt_gs_mode;
 645                         unsigned        vgt_primitiveid_en;
 646                         unsigned        vgt_reuse_off;
 647                         unsigned        spi_vs_out_config;
 648                         unsigned        spi_shader_pos_format;
 649                         unsigned        pa_cl_vte_cntl;
 650                 } vs;
 651
 652                 struct {
 653                         unsigned        spi_ps_input_ena;
 654                         unsigned        spi_ps_input_addr;
 655                         unsigned        spi_baryc_cntl;
 656                         unsigned        spi_ps_in_control;
 657                         unsigned        spi_shader_z_format;
 658                         unsigned        spi_shader_col_format;
 659                         unsigned        cb_shader_mask;
 660                 } ps;
 661         } ctx_reg;
 662
 663         /*For save precompute registers value */
 664         unsigned vgt_tf_param; /* VGT_TF_PARAM */
 665         unsigned vgt_vertex_reuse_block_cntl; /* VGT_VERTEX_REUSE_BLOCK_CNTL */
 666 };
 667
 668 struct si_shader_part {
 669         struct si_shader_part *next;
 670         union si_shader_part_key key;
 671         struct ac_shader_binary binary;
 672         struct si_shader_config config;
 673 };
 674
 675 /* si_shader.c */
 676 struct si_shader *
 677 si_generate_gs_copy_shader(struct si_screen *sscreen,
 678                            struct ac_llvm_compiler *compiler,
 679                            struct si_shader_selector *gs_selector,
 680                            struct pipe_debug_callback *debug);
 681 int si_compile_tgsi_shader(struct si_screen *sscreen,
 682                            struct ac_llvm_compiler *compiler,
 683                            struct si_shader *shader,
 684                            struct pipe_debug_callback *debug);
 685 int si_shader_create(struct si_screen *sscreen, struct ac_llvm_compiler *compiler,
 686                      struct si_shader *shader,
 687                      struct pipe_debug_callback *debug);
 688 void si_shader_destroy(struct si_shader *shader);
 689 unsigned si_shader_io_get_unique_index_patch(unsigned semantic_name, unsigned index);
 690 unsigned si_shader_io_get_unique_index(unsigned semantic_name, unsigned index,
 691                                        unsigned is_varying);
 692 int si_shader_binary_upload(struct si_screen *sscreen, struct si_shader *shader);
 693 void si_shader_dump(struct si_screen *sscreen, const struct si_shader *shader,
 694                     struct pipe_debug_callback *debug, unsigned processor,
 695                     FILE *f, bool check_debug_option);
 696 void si_shader_dump_stats_for_shader_db(const struct si_shader *shader,
 697                                         struct pipe_debug_callback *debug);
 698 void si_multiwave_lds_size_workaround(struct si_screen *sscreen,
 699                                       unsigned *lds_size);
 700 void si_shader_apply_scratch_relocs(struct si_shader *shader,
 701                                     uint64_t scratch_va);
 702 void si_shader_binary_read_config(struct ac_shader_binary *binary,
 703                                   struct si_shader_config *conf,
 704                                   unsigned symbol_offset);
 705 const char *si_get_shader_name(const struct si_shader *shader, unsigned processor);
 706
 707 /* si_shader_nir.c */
 708 void si_nir_scan_shader(const struct nir_shader *nir,
 709                         struct tgsi_shader_info *info);
 710 void si_nir_scan_tess_ctrl(const struct nir_shader *nir,
 711                            struct tgsi_tessctrl_info *out);
 712 void si_lower_nir(struct si_shader_selector *sel);
 713
 714 /* Inline helpers. */
 715
 716 /* Return the pointer to the main shader part's pointer. */
 717 static inline struct si_shader **
 718 si_get_main_shader_part(struct si_shader_selector *sel,
 719                         struct si_shader_key *key)
 720 {
 721         if (key->as_ls)
 722                 return &sel->main_shader_part_ls;
 723         if (key->as_es)
 724                 return &sel->main_shader_part_es;
 725         return &sel->main_shader_part;
 726 }
 727
 728 static inline bool
 729 si_shader_uses_bindless_samplers(struct si_shader_selector *selector)
 730 {
 731         return selector ? selector->info.uses_bindless_samplers : false;
 732 }
 733
 734 static inline bool
 735 si_shader_uses_bindless_images(struct si_shader_selector *selector)
 736 {
 737         return selector ? selector->info.uses_bindless_images : false;
 738 }
 739
 740 void si_destroy_shader_selector(struct si_context *sctx,
 741                                 struct si_shader_selector *sel);
 742
 743 static inline void
 744 si_shader_selector_reference(struct si_context *sctx,
 745                              struct si_shader_selector **dst,
 746                              struct si_shader_selector *src)
 747 {
 748         if (pipe_reference(&(*dst)->reference, &src->reference))
 749                 si_destroy_shader_selector(sctx, *dst);
 750
 751         *dst = src;
 752 }
 753
 754 #endif