src/gallium/drivers/radeonsi/si_shader_internal.h

   1 /*
   2  * Copyright 2016 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 #ifndef SI_SHADER_PRIVATE_H
  26 #define SI_SHADER_PRIVATE_H
  27
  28 #include "si_shader.h"
  29 #include "ac_shader_abi.h"
  30
  31 struct pipe_debug_callback;
  32
  33 #define RADEON_LLVM_MAX_INPUTS 32 * 4
  34
  35 /* Ideally pass the sample mask input to the PS epilog as v14, which
  36  * is its usual location, so that the shader doesn't have to add v_mov.
  37  */
  38 #define PS_EPILOG_SAMPLEMASK_MIN_LOC 14
  39
  40 struct si_shader_output_values {
  41         LLVMValueRef values[4];
  42         unsigned semantic_name;
  43         unsigned semantic_index;
  44         ubyte vertex_stream[4];
  45 };
  46
  47 struct si_shader_context {
  48         struct ac_llvm_context ac;
  49         struct si_shader *shader;
  50         struct si_screen *screen;
  51
  52         unsigned type; /* PIPE_SHADER_* specifies the type of shader. */
  53
  54         /* For clamping the non-constant index in resource indexing: */
  55         unsigned num_const_buffers;
  56         unsigned num_shader_buffers;
  57         unsigned num_images;
  58         unsigned num_samplers;
  59
  60         struct ac_shader_args args;
  61         struct ac_shader_abi abi;
  62
  63         LLVMValueRef inputs[RADEON_LLVM_MAX_INPUTS];
  64
  65         LLVMBasicBlockRef merged_wrap_if_entry_block;
  66         int merged_wrap_if_label;
  67
  68         LLVMValueRef main_fn;
  69         LLVMTypeRef return_type;
  70
  71         struct ac_arg const_and_shader_buffers;
  72         struct ac_arg samplers_and_images;
  73
  74         /* For merged shaders, the per-stage descriptors for the stage other
  75          * than the one we're processing, used to pass them through from the
  76          * first stage to the second.
  77          */
  78         struct ac_arg other_const_and_shader_buffers;
  79         struct ac_arg other_samplers_and_images;
  80
  81         struct ac_arg rw_buffers;
  82         struct ac_arg bindless_samplers_and_images;
  83         /* Common inputs for merged shaders. */
  84         struct ac_arg merged_wave_info;
  85         struct ac_arg merged_scratch_offset;
  86         struct ac_arg small_prim_cull_info;
  87         /* API VS */
  88         struct ac_arg vertex_buffers;
  89         struct ac_arg vb_descriptors[5];
  90         struct ac_arg rel_auto_id;
  91         struct ac_arg vs_prim_id;
  92         struct ac_arg vertex_index0;
  93         /* VS states and layout of LS outputs / TCS inputs at the end
  94          *   [0] = clamp vertex color
  95          *   [1] = indexed
  96          *   [2:3] = NGG: output primitive type
  97          *   [4:5] = NGG: provoking vertex index
  98          *   [6]   = NGG: streamout queries enabled
  99          *   [7:10] = NGG: small prim filter precision = num_samples / quant_mode,
 100          *            but in reality it's: 1/2^n, from 1/16 to 1/4096 = 1/2^4 to 1/2^12
 101          *            Only the first 4 bits of the exponent are stored.
 102          *            Set it like this: (fui(num_samples / quant_mode) >> 23)
 103          *            Expand to FP32 like this: ((0x70 | value) << 23);
 104          *            With 0x70 = 112, we get 2^(112 + value - 127) = 2^(value - 15)
 105          *            = 1/2^(15 - value) in FP32
 106          *   [11:23] = stride between patches in DW = num_inputs * num_vertices * 4
 107          *             max = 32*32*4 + 32*4
 108          *   [24:31] = stride between vertices in DW = num_inputs * 4
 109          *             max = 32*4
 110          */
 111         struct ac_arg vs_state_bits;
 112         struct ac_arg vs_blit_inputs;
 113         struct ac_arg ngg_old_thread_id; /* generated by the NGG cull shader */
 114         /* HW VS */
 115         struct ac_arg streamout_config;
 116         struct ac_arg streamout_write_index;
 117         struct ac_arg streamout_offset[4];
 118
 119         /* API TCS & TES */
 120         /* Layout of TCS outputs in the offchip buffer
 121          * # 6 bits
 122          *   [0:5] = the number of patches per threadgroup, max = NUM_PATCHES (40)
 123          * # 6 bits
 124          *   [6:11] = the number of output vertices per patch, max = 32
 125          * # 20 bits
 126          *   [12:31] = the offset of per patch attributes in the buffer in bytes.
 127          *             max = NUM_PATCHES*32*32*16
 128          */
 129         struct ac_arg tcs_offchip_layout;
 130
 131         /* API TCS */
 132         /* Offsets where TCS outputs and TCS patch outputs live in LDS:
 133          *   [0:15] = TCS output patch0 offset / 16, max = NUM_PATCHES * 32 * 32
 134          *   [16:31] = TCS output patch0 offset for per-patch / 16
 135          *             max = (NUM_PATCHES + 1) * 32*32
 136          */
 137         struct ac_arg tcs_out_lds_offsets;
 138         /* Layout of TCS outputs / TES inputs:
 139          *   [0:12] = stride between output patches in DW, num_outputs * num_vertices * 4
 140          *            max = 32*32*4 + 32*4
 141          *   [13:18] = gl_PatchVerticesIn, max = 32
 142          *   [19:31] = high 13 bits of the 32-bit address of tessellation ring buffers
 143          */
 144         struct ac_arg tcs_out_lds_layout;
 145         struct ac_arg tcs_offchip_offset;
 146         struct ac_arg tcs_factor_offset;
 147
 148         /* API TES */
 149         struct ac_arg tes_offchip_addr;
 150         struct ac_arg tes_u;
 151         struct ac_arg tes_v;
 152         struct ac_arg tes_rel_patch_id;
 153         /* HW ES */
 154         struct ac_arg es2gs_offset;
 155         /* HW GS */
 156         /* On gfx10:
 157          *  - bits 0..11: ordered_wave_id
 158          *  - bits 12..20: number of vertices in group
 159          *  - bits 22..30: number of primitives in group
 160          */
 161         struct ac_arg gs_tg_info;
 162         /* API GS */
 163         struct ac_arg gs2vs_offset;
 164         struct ac_arg gs_wave_id; /* GFX6 */
 165         struct ac_arg gs_vtx_offset[6]; /* in dwords (GFX6) */
 166         struct ac_arg gs_vtx01_offset; /* in dwords (GFX9) */
 167         struct ac_arg gs_vtx23_offset; /* in dwords (GFX9) */
 168         struct ac_arg gs_vtx45_offset; /* in dwords (GFX9) */
 169         /* PS */
 170         struct ac_arg pos_fixed_pt;
 171         /* CS */
 172         struct ac_arg block_size;
 173         struct ac_arg cs_user_data;
 174
 175         struct ac_llvm_compiler *compiler;
 176
 177         /* Preloaded descriptors. */
 178         LLVMValueRef esgs_ring;
 179         LLVMValueRef gsvs_ring[4];
 180         LLVMValueRef tess_offchip_ring;
 181
 182         LLVMValueRef invoc0_tess_factors[6]; /* outer[4], inner[2] */
 183         LLVMValueRef gs_next_vertex[4];
 184         LLVMValueRef gs_curprim_verts[4];
 185         LLVMValueRef gs_generated_prims[4];
 186         LLVMValueRef gs_ngg_emit;
 187         LLVMValueRef gs_ngg_scratch;
 188         LLVMValueRef postponed_kill;
 189         LLVMValueRef return_value;
 190 };
 191
 192 static inline struct si_shader_context *
 193 si_shader_context_from_abi(struct ac_shader_abi *abi)
 194 {
 195         struct si_shader_context *ctx = NULL;
 196         return container_of(abi, ctx, abi);
 197 }
 198
 199 LLVMValueRef si_nir_load_input_tes(struct ac_shader_abi *abi,
 200                                    LLVMTypeRef type,
 201                                    LLVMValueRef vertex_index,
 202                                    LLVMValueRef param_index,
 203                                    unsigned const_index,
 204                                    unsigned location,
 205                                    unsigned driver_location,
 206                                    unsigned component,
 207                                    unsigned num_components,
 208                                    bool is_patch,
 209                                    bool is_compact,
 210                                    bool load_input);
 211 bool si_is_merged_shader(struct si_shader_context *ctx);
 212 LLVMValueRef si_get_sample_id(struct si_shader_context *ctx);
 213 void si_declare_compute_memory(struct si_shader_context *ctx);
 214 LLVMValueRef si_get_primitive_id(struct si_shader_context *ctx,
 215                                  unsigned swizzle);
 216 void si_add_arg_checked(struct ac_shader_args *args,
 217                         enum ac_arg_regfile file,
 218                         unsigned registers, enum ac_arg_type type,
 219                         struct ac_arg *arg,
 220                         unsigned idx);
 221 bool si_nir_build_llvm(struct si_shader_context *ctx, struct nir_shader *nir);
 222
 223 LLVMValueRef si_unpack_param(struct si_shader_context *ctx,
 224                              struct ac_arg param, unsigned rshift,
 225                              unsigned bitwidth);
 226 void si_build_wrapper_function(struct si_shader_context *ctx, LLVMValueRef *parts,
 227                                unsigned num_parts, unsigned main_part,
 228                                unsigned next_shader_first_part);
 229 bool si_need_ps_prolog(const union si_shader_part_key *key);
 230 void si_get_ps_prolog_key(struct si_shader *shader,
 231                           union si_shader_part_key *key,
 232                           bool separate_prolog);
 233 void si_get_ps_epilog_key(struct si_shader *shader,
 234                           union si_shader_part_key *key);
 235 void si_fix_resource_usage(struct si_screen *sscreen, struct si_shader *shader);
 236 void si_create_function(struct si_shader_context *ctx, bool ngg_cull_shader);
 237
 238 bool gfx10_ngg_export_prim_early(struct si_shader *shader);
 239 void gfx10_ngg_build_sendmsg_gs_alloc_req(struct si_shader_context *ctx);
 240 void gfx10_ngg_build_export_prim(struct si_shader_context *ctx,
 241                                  LLVMValueRef user_edgeflags[3],
 242                                  LLVMValueRef prim_passthrough);
 243 void gfx10_emit_ngg_culling_epilogue_4x_wave32(struct ac_shader_abi *abi,
 244                                                unsigned max_outputs,
 245                                                LLVMValueRef *addrs);
 246 void gfx10_emit_ngg_epilogue(struct ac_shader_abi *abi,
 247                              unsigned max_outputs,
 248                              LLVMValueRef *addrs);
 249 void gfx10_ngg_gs_emit_vertex(struct si_shader_context *ctx,
 250                               unsigned stream,
 251                               LLVMValueRef *addrs);
 252 void gfx10_ngg_gs_emit_prologue(struct si_shader_context *ctx);
 253 void gfx10_ngg_gs_emit_epilogue(struct si_shader_context *ctx);
 254 void gfx10_ngg_calculate_subgroup_info(struct si_shader *shader);
 255
 256 /* si_shader_llvm.c */
 257 int si_compile_llvm(struct si_screen *sscreen,
 258                     struct si_shader_binary *binary,
 259                     struct ac_shader_config *conf,
 260                     struct ac_llvm_compiler *compiler,
 261                     struct ac_llvm_context *ac,
 262                     struct pipe_debug_callback *debug,
 263                     enum pipe_shader_type shader_type,
 264                     const char *name,
 265                     bool less_optimized);
 266 void si_llvm_context_init(struct si_shader_context *ctx,
 267                           struct si_screen *sscreen,
 268                           struct ac_llvm_compiler *compiler,
 269                           unsigned wave_size);
 270 void si_llvm_create_func(struct si_shader_context *ctx, const char *name,
 271                          LLVMTypeRef *return_types, unsigned num_return_elems,
 272                          unsigned max_workgroup_size);
 273 void si_llvm_optimize_module(struct si_shader_context *ctx);
 274 void si_llvm_dispose(struct si_shader_context *ctx);
 275 LLVMValueRef si_buffer_load_const(struct si_shader_context *ctx,
 276                                   LLVMValueRef resource, LLVMValueRef offset);
 277 void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret);
 278 LLVMValueRef si_insert_input_ret(struct si_shader_context *ctx, LLVMValueRef ret,
 279                                  struct ac_arg param, unsigned return_index);
 280 LLVMValueRef si_insert_input_ret_float(struct si_shader_context *ctx, LLVMValueRef ret,
 281                                        struct ac_arg param, unsigned return_index);
 282 LLVMValueRef si_insert_input_ptr(struct si_shader_context *ctx, LLVMValueRef ret,
 283                                  struct ac_arg param, unsigned return_index);
 284 LLVMValueRef si_prolog_get_rw_buffers(struct si_shader_context *ctx);
 285 LLVMValueRef si_build_gather_64bit(struct si_shader_context *ctx,
 286                                    LLVMTypeRef type, LLVMValueRef val1,
 287                                    LLVMValueRef val2);
 288 void si_llvm_emit_barrier(struct si_shader_context *ctx);
 289 void si_llvm_declare_esgs_ring(struct si_shader_context *ctx);
 290 void si_init_exec_from_input(struct si_shader_context *ctx, struct ac_arg param,
 291                              unsigned bitoffset);
 292
 293 /* si_shader_llvm_gs.c */
 294 LLVMValueRef si_is_es_thread(struct si_shader_context *ctx);
 295 LLVMValueRef si_is_gs_thread(struct si_shader_context *ctx);
 296 void si_llvm_emit_es_epilogue(struct ac_shader_abi *abi, unsigned max_outputs,
 297                               LLVMValueRef *addrs);
 298 void si_preload_esgs_ring(struct si_shader_context *ctx);
 299 void si_preload_gs_rings(struct si_shader_context *ctx);
 300 void si_llvm_build_gs_prolog(struct si_shader_context *ctx,
 301                              union si_shader_part_key *key);
 302 void si_llvm_init_gs_callbacks(struct si_shader_context *ctx);
 303
 304 /* si_shader_llvm_tess.c */
 305 void si_llvm_preload_tes_rings(struct si_shader_context *ctx);
 306 void si_llvm_emit_ls_epilogue(struct ac_shader_abi *abi, unsigned max_outputs,
 307                               LLVMValueRef *addrs);
 308 void si_llvm_build_tcs_epilog(struct si_shader_context *ctx,
 309                               union si_shader_part_key *key);
 310 void si_llvm_init_tcs_callbacks(struct si_shader_context *ctx);
 311 void si_llvm_init_tes_callbacks(struct si_shader_context *ctx, bool ngg_cull_shader);
 312
 313 /* si_shader_llvm_ps.c */
 314 void si_llvm_build_ps_prolog(struct si_shader_context *ctx,
 315                              union si_shader_part_key *key);
 316 void si_llvm_build_ps_epilog(struct si_shader_context *ctx,
 317                              union si_shader_part_key *key);
 318 void si_llvm_build_monolithic_ps(struct si_shader_context *ctx,
 319                                  struct si_shader *shader);
 320 void si_llvm_init_ps_callbacks(struct si_shader_context *ctx);
 321
 322 /* si_shader_llvm_resources.c */
 323 void si_llvm_init_resource_callbacks(struct si_shader_context *ctx);
 324
 325 /* si_shader_llvm_vs.c */
 326 void si_llvm_load_vs_inputs(struct si_shader_context *ctx, struct nir_shader *nir);
 327 void si_llvm_streamout_store_output(struct si_shader_context *ctx,
 328                                     LLVMValueRef const *so_buffers,
 329                                     LLVMValueRef const *so_write_offsets,
 330                                     struct pipe_stream_output *stream_out,
 331                                     struct si_shader_output_values *shader_out);
 332 void si_llvm_emit_streamout(struct si_shader_context *ctx,
 333                             struct si_shader_output_values *outputs,
 334                             unsigned noutput, unsigned stream);
 335 void si_llvm_build_vs_exports(struct si_shader_context *ctx,
 336                               struct si_shader_output_values *outputs,
 337                               unsigned noutput);
 338 void si_llvm_emit_vs_epilogue(struct ac_shader_abi *abi, unsigned max_outputs,
 339                               LLVMValueRef *addrs);
 340 void si_llvm_build_vs_prolog(struct si_shader_context *ctx,
 341                              union si_shader_part_key *key);
 342 void si_llvm_init_vs_callbacks(struct si_shader_context *ctx, bool ngg_cull_shader);
 343
 344 #endif