src/gallium/drivers/lima/lima_program.c

   1 /*
   2  * Copyright (c) 2017-2019 Lima Project
   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, sub license,
   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
  12  * next paragraph) shall be included in all copies or substantial portions
  13  * of the 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 NON-INFRINGEMENT. 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
  21  * DEALINGS IN THE SOFTWARE.
  22  *
  23  */
  24
  25 #include "util/u_memory.h"
  26 #include "util/ralloc.h"
  27 #include "util/u_debug.h"
  28
  29 #include "tgsi/tgsi_dump.h"
  30 #include "compiler/nir/nir.h"
  31 #include "nir/tgsi_to_nir.h"
  32
  33 #include "pipe/p_state.h"
  34
  35 #include "lima_screen.h"
  36 #include "lima_context.h"
  37 #include "lima_program.h"
  38 #include "lima_bo.h"
  39 #include "ir/lima_ir.h"
  40
  41 static const nir_shader_compiler_options vs_nir_options = {
  42    .lower_ffma = true,
  43    .lower_fpow = true,
  44    .lower_ffract = true,
  45    .lower_fdiv = true,
  46    .lower_fsqrt = true,
  47    .lower_sub = true,
  48    .lower_flrp32 = true,
  49    .lower_flrp64 = true,
  50    /* could be implemented by clamp */
  51    .lower_fsat = true,
  52 };
  53
  54 static const nir_shader_compiler_options fs_nir_options = {
  55    .lower_fpow = true,
  56    .lower_fdiv = true,
  57    .lower_sub = true,
  58    .lower_flrp32 = true,
  59    .lower_flrp64 = true,
  60    .lower_fsign = true,
  61 };
  62
  63 const void *
  64 lima_program_get_compiler_options(enum pipe_shader_type shader)
  65 {
  66    switch (shader) {
  67    case PIPE_SHADER_VERTEX:
  68       return &vs_nir_options;
  69    case PIPE_SHADER_FRAGMENT:
  70       return &fs_nir_options;
  71    default:
  72       return NULL;
  73    }
  74 }
  75
  76 static int
  77 type_size(const struct glsl_type *type, bool bindless)
  78 {
  79    return glsl_count_attribute_slots(type, false);
  80 }
  81
  82 static void
  83 lima_program_optimize_vs_nir(struct nir_shader *s)
  84 {
  85    bool progress;
  86
  87    NIR_PASS_V(s, nir_lower_io, nir_var_all, type_size, 0);
  88    NIR_PASS_V(s, nir_lower_regs_to_ssa);
  89    NIR_PASS_V(s, nir_lower_load_const_to_scalar);
  90    NIR_PASS_V(s, lima_nir_lower_uniform_to_scalar);
  91    NIR_PASS_V(s, nir_lower_io_to_scalar,
  92               nir_var_shader_in|nir_var_shader_out);
  93    NIR_PASS_V(s, nir_lower_bool_to_float);
  94
  95    do {
  96       progress = false;
  97
  98       NIR_PASS_V(s, nir_lower_vars_to_ssa);
  99       NIR_PASS(progress, s, nir_lower_alu_to_scalar);
 100       NIR_PASS(progress, s, nir_lower_phis_to_scalar);
 101       NIR_PASS(progress, s, nir_copy_prop);
 102       NIR_PASS(progress, s, nir_opt_remove_phis);
 103       NIR_PASS(progress, s, nir_opt_dce);
 104       NIR_PASS(progress, s, nir_opt_dead_cf);
 105       NIR_PASS(progress, s, nir_opt_cse);
 106       NIR_PASS(progress, s, nir_opt_peephole_select, 8, true, true);
 107       NIR_PASS(progress, s, nir_opt_algebraic);
 108       NIR_PASS(progress, s, nir_opt_constant_folding);
 109       NIR_PASS(progress, s, nir_opt_undef);
 110       NIR_PASS(progress, s, nir_opt_loop_unroll,
 111                nir_var_shader_in |
 112                nir_var_shader_out |
 113                nir_var_function_temp);
 114    } while (progress);
 115
 116    NIR_PASS_V(s, nir_lower_locals_to_regs);
 117    NIR_PASS_V(s, nir_convert_from_ssa, true);
 118    NIR_PASS_V(s, nir_remove_dead_variables, nir_var_function_temp);
 119    nir_sweep(s);
 120 }
 121
 122 static void
 123 lima_program_optimize_fs_nir(struct nir_shader *s)
 124 {
 125    bool progress;
 126
 127    NIR_PASS_V(s, nir_lower_fragcoord_wtrans);
 128    NIR_PASS_V(s, nir_lower_io, nir_var_all, type_size, 0);
 129    NIR_PASS_V(s, nir_lower_regs_to_ssa);
 130    NIR_PASS_V(s, nir_lower_bool_to_float);
 131
 132    do {
 133       progress = false;
 134
 135       NIR_PASS_V(s, nir_lower_vars_to_ssa);
 136       //NIR_PASS(progress, s, nir_lower_alu_to_scalar);
 137       NIR_PASS(progress, s, nir_lower_phis_to_scalar);
 138       NIR_PASS(progress, s, nir_copy_prop);
 139       NIR_PASS(progress, s, nir_opt_remove_phis);
 140       NIR_PASS(progress, s, nir_opt_dce);
 141       NIR_PASS(progress, s, nir_opt_dead_cf);
 142       NIR_PASS(progress, s, nir_opt_cse);
 143       NIR_PASS(progress, s, nir_opt_peephole_select, 8, true, true);
 144       NIR_PASS(progress, s, nir_opt_algebraic);
 145       NIR_PASS(progress, s, nir_opt_constant_folding);
 146       NIR_PASS(progress, s, nir_opt_undef);
 147       NIR_PASS(progress, s, nir_opt_loop_unroll,
 148                nir_var_shader_in |
 149                nir_var_shader_out |
 150                nir_var_function_temp);
 151    } while (progress);
 152
 153    /* Lower modifiers */
 154    NIR_PASS_V(s, nir_lower_to_source_mods, nir_lower_all_source_mods);
 155    NIR_PASS_V(s, nir_copy_prop);
 156    NIR_PASS_V(s, nir_opt_dce);
 157
 158    NIR_PASS_V(s, nir_lower_locals_to_regs);
 159    NIR_PASS_V(s, nir_convert_from_ssa, true);
 160    NIR_PASS_V(s, nir_remove_dead_variables, nir_var_function_temp);
 161
 162    NIR_PASS_V(s, nir_move_vec_src_uses_to_dest);
 163    NIR_PASS_V(s, nir_lower_vec_to_movs);
 164
 165    nir_sweep(s);
 166 }
 167
 168 static void *
 169 lima_create_fs_state(struct pipe_context *pctx,
 170                      const struct pipe_shader_state *cso)
 171 {
 172    struct lima_screen *screen = lima_screen(pctx->screen);
 173    struct lima_fs_shader_state *so = rzalloc(NULL, struct lima_fs_shader_state);
 174
 175    if (!so)
 176       return NULL;
 177
 178    nir_shader *nir;
 179    if (cso->type == PIPE_SHADER_IR_NIR)
 180       nir = cso->ir.nir;
 181    else {
 182       assert(cso->type == PIPE_SHADER_IR_TGSI);
 183
 184       nir = tgsi_to_nir(cso->tokens, pctx->screen);
 185    }
 186
 187    lima_program_optimize_fs_nir(nir);
 188
 189    if (lima_debug & LIMA_DEBUG_PP)
 190       nir_print_shader(nir, stdout);
 191
 192    if (!ppir_compile_nir(so, nir, screen->pp_ra)) {
 193       ralloc_free(so);
 194       return NULL;
 195    }
 196
 197    return so;
 198 }
 199
 200 static void
 201 lima_bind_fs_state(struct pipe_context *pctx, void *hwcso)
 202 {
 203    struct lima_context *ctx = lima_context(pctx);
 204
 205    ctx->fs = hwcso;
 206    ctx->dirty |= LIMA_CONTEXT_DIRTY_SHADER_FRAG;
 207 }
 208
 209 static void
 210 lima_delete_fs_state(struct pipe_context *pctx, void *hwcso)
 211 {
 212    struct lima_fs_shader_state *so = hwcso;
 213
 214    if (so->bo)
 215       lima_bo_free(so->bo);
 216
 217    ralloc_free(so);
 218 }
 219
 220 bool
 221 lima_update_vs_state(struct lima_context *ctx)
 222 {
 223    struct lima_vs_shader_state *vs = ctx->vs;
 224    if (!vs->bo) {
 225       struct lima_screen *screen = lima_screen(ctx->base.screen);
 226       vs->bo = lima_bo_create(screen, vs->shader_size, 0);
 227       if (!vs->bo) {
 228          fprintf(stderr, "lima: create vs shader bo fail\n");
 229          return false;
 230       }
 231
 232       memcpy(lima_bo_map(vs->bo), vs->shader, vs->shader_size);
 233       ralloc_free(vs->shader);
 234       vs->shader = NULL;
 235    }
 236
 237    return true;
 238 }
 239
 240 bool
 241 lima_update_fs_state(struct lima_context *ctx)
 242 {
 243    struct lima_fs_shader_state *fs = ctx->fs;
 244    if (!fs->bo) {
 245       struct lima_screen *screen = lima_screen(ctx->base.screen);
 246       fs->bo = lima_bo_create(screen, fs->shader_size, 0);
 247       if (!fs->bo) {
 248          fprintf(stderr, "lima: create fs shader bo fail\n");
 249          return false;
 250       }
 251
 252       memcpy(lima_bo_map(fs->bo), fs->shader, fs->shader_size);
 253       ralloc_free(fs->shader);
 254       fs->shader = NULL;
 255    }
 256
 257    return true;
 258 }
 259
 260 static void *
 261 lima_create_vs_state(struct pipe_context *pctx,
 262                      const struct pipe_shader_state *cso)
 263 {
 264    struct lima_vs_shader_state *so = rzalloc(NULL, struct lima_vs_shader_state);
 265
 266    if (!so)
 267       return NULL;
 268
 269    nir_shader *nir;
 270    if (cso->type == PIPE_SHADER_IR_NIR)
 271       nir = cso->ir.nir;
 272    else {
 273       assert(cso->type == PIPE_SHADER_IR_TGSI);
 274
 275       nir = tgsi_to_nir(cso->tokens, pctx->screen);
 276    }
 277
 278    lima_program_optimize_vs_nir(nir);
 279
 280    if (lima_debug & LIMA_DEBUG_GP)
 281       nir_print_shader(nir, stdout);
 282
 283    if (!gpir_compile_nir(so, nir)) {
 284       ralloc_free(so);
 285       return NULL;
 286    }
 287
 288    return so;
 289 }
 290
 291 static void
 292 lima_bind_vs_state(struct pipe_context *pctx, void *hwcso)
 293 {
 294    struct lima_context *ctx = lima_context(pctx);
 295
 296    ctx->vs = hwcso;
 297    ctx->dirty |= LIMA_CONTEXT_DIRTY_SHADER_VERT;
 298 }
 299
 300 static void
 301 lima_delete_vs_state(struct pipe_context *pctx, void *hwcso)
 302 {
 303    struct lima_vs_shader_state *so = hwcso;
 304
 305    if (so->bo)
 306       lima_bo_free(so->bo);
 307
 308    ralloc_free(so);
 309 }
 310
 311 void
 312 lima_program_init(struct lima_context *ctx)
 313 {
 314    ctx->base.create_fs_state = lima_create_fs_state;
 315    ctx->base.bind_fs_state = lima_bind_fs_state;
 316    ctx->base.delete_fs_state = lima_delete_fs_state;
 317
 318    ctx->base.create_vs_state = lima_create_vs_state;
 319    ctx->base.bind_vs_state = lima_bind_vs_state;
 320    ctx->base.delete_vs_state = lima_delete_vs_state;
 321 }