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 "gallivm/lp_bld_flow.h"
  30 #include "gallivm/lp_bld_init.h"
  31 #include "gallivm/lp_bld_tgsi.h"
  32 #include "tgsi/tgsi_parse.h"
  33 #include "ac_shader_abi.h"
  34
  35 #include <llvm-c/Core.h>
  36 #include <llvm-c/TargetMachine.h>
  37
  38 struct pipe_debug_callback;
  39
  40 #define RADEON_LLVM_MAX_INPUT_SLOTS 32
  41 #define RADEON_LLVM_MAX_INPUTS 32 * 4
  42 #define RADEON_LLVM_MAX_OUTPUTS 32 * 4
  43
  44 #define RADEON_LLVM_MAX_SYSTEM_VALUES 11
  45 #define RADEON_LLVM_MAX_ADDRS 16
  46
  47 struct si_shader_output_values {
  48         LLVMValueRef values[4];
  49         unsigned semantic_name;
  50         unsigned semantic_index;
  51         ubyte vertex_stream[4];
  52 };
  53
  54 struct si_shader_context {
  55         struct lp_build_tgsi_context bld_base;
  56         struct gallivm_state gallivm;
  57         struct ac_llvm_context ac;
  58         struct si_shader *shader;
  59         struct si_screen *screen;
  60
  61         unsigned type; /* PIPE_SHADER_* specifies the type of shader. */
  62
  63         /* For clamping the non-constant index in resource indexing: */
  64         unsigned num_const_buffers;
  65         unsigned num_shader_buffers;
  66         unsigned num_images;
  67         unsigned num_samplers;
  68
  69         struct ac_shader_args args;
  70         struct ac_shader_abi abi;
  71
  72         /** This function is responsible for initilizing the inputs array and will be
  73           * called once for each input declared in the TGSI shader.
  74           */
  75         void (*load_input)(struct si_shader_context *,
  76                            unsigned input_index,
  77                            const struct tgsi_full_declaration *decl,
  78                            LLVMValueRef out[4]);
  79
  80         /** This array contains the input values for the shader.  Typically these
  81           * values will be in the form of a target intrinsic that will inform the
  82           * backend how to load the actual inputs to the shader.
  83           */
  84         struct tgsi_full_declaration input_decls[RADEON_LLVM_MAX_INPUT_SLOTS];
  85         LLVMValueRef inputs[RADEON_LLVM_MAX_INPUTS];
  86         LLVMValueRef outputs[RADEON_LLVM_MAX_OUTPUTS][TGSI_NUM_CHANNELS];
  87         LLVMValueRef addrs[RADEON_LLVM_MAX_ADDRS][TGSI_NUM_CHANNELS];
  88
  89         /** This pointer is used to contain the temporary values.
  90           * The amount of temporary used in tgsi can't be bound to a max value and
  91           * thus we must allocate this array at runtime.
  92           */
  93         LLVMValueRef *temps;
  94         unsigned temps_count;
  95         LLVMValueRef system_values[RADEON_LLVM_MAX_SYSTEM_VALUES];
  96
  97         LLVMValueRef *imms;
  98         unsigned imms_num;
  99
 100         LLVMBasicBlockRef merged_wrap_if_entry_block;
 101         int merged_wrap_if_label;
 102
 103         struct tgsi_array_info *temp_arrays;
 104         LLVMValueRef *temp_array_allocas;
 105
 106         LLVMValueRef undef_alloca;
 107
 108         LLVMValueRef main_fn;
 109         LLVMTypeRef return_type;
 110
 111         struct ac_arg const_and_shader_buffers;
 112         struct ac_arg samplers_and_images;
 113
 114         /* For merged shaders, the per-stage descriptors for the stage other
 115          * than the one we're processing, used to pass them through from the
 116          * first stage to the second.
 117          */
 118         struct ac_arg other_const_and_shader_buffers;
 119         struct ac_arg other_samplers_and_images;
 120
 121         struct ac_arg rw_buffers;
 122         struct ac_arg bindless_samplers_and_images;
 123         /* Common inputs for merged shaders. */
 124         struct ac_arg merged_wave_info;
 125         struct ac_arg merged_scratch_offset;
 126         /* API VS */
 127         struct ac_arg vertex_buffers;
 128         struct ac_arg rel_auto_id;
 129         struct ac_arg vs_prim_id;
 130         struct ac_arg vertex_index0;
 131         /* VS states and layout of LS outputs / TCS inputs at the end
 132          *   [0] = clamp vertex color
 133          *   [1] = indexed
 134          *   [8:20] = stride between patches in DW = num_inputs * num_vertices * 4
 135          *            max = 32*32*4 + 32*4
 136          *   [24:31] = stride between vertices in DW = num_inputs * 4
 137          *             max = 32*4
 138          */
 139         struct ac_arg vs_state_bits;
 140         struct ac_arg vs_blit_inputs;
 141         /* HW VS */
 142         struct ac_arg streamout_config;
 143         struct ac_arg streamout_write_index;
 144         struct ac_arg streamout_offset[4];
 145
 146         /* API TCS & TES */
 147         /* Layout of TCS outputs in the offchip buffer
 148          * # 6 bits
 149          *   [0:5] = the number of patches per threadgroup, max = NUM_PATCHES (40)
 150          * # 6 bits
 151          *   [6:11] = the number of output vertices per patch, max = 32
 152          * # 20 bits
 153          *   [12:31] = the offset of per patch attributes in the buffer in bytes.
 154          *             max = NUM_PATCHES*32*32*16
 155          */
 156         struct ac_arg tcs_offchip_layout;
 157
 158         /* API TCS */
 159         /* Offsets where TCS outputs and TCS patch outputs live in LDS:
 160          *   [0:15] = TCS output patch0 offset / 16, max = NUM_PATCHES * 32 * 32
 161          *   [16:31] = TCS output patch0 offset for per-patch / 16
 162          *             max = (NUM_PATCHES + 1) * 32*32
 163          */
 164         struct ac_arg tcs_out_lds_offsets;
 165         /* Layout of TCS outputs / TES inputs:
 166          *   [0:12] = stride between output patches in DW, num_outputs * num_vertices * 4
 167          *            max = 32*32*4 + 32*4
 168          *   [13:18] = gl_PatchVerticesIn, max = 32
 169          *   [19:31] = high 13 bits of the 32-bit address of tessellation ring buffers
 170          */
 171         struct ac_arg tcs_out_lds_layout;
 172         struct ac_arg tcs_offchip_offset;
 173         struct ac_arg tcs_factor_offset;
 174
 175         /* API TES */
 176         struct ac_arg tes_offchip_addr;
 177         struct ac_arg tes_u;
 178         struct ac_arg tes_v;
 179         struct ac_arg tes_rel_patch_id;
 180         /* HW ES */
 181         struct ac_arg es2gs_offset;
 182         /* HW GS */
 183         /* On gfx10:
 184          *  - bits 0..10: ordered_wave_id
 185          *  - bits 12..20: number of vertices in group
 186          *  - bits 22..30: number of primitives in group
 187          */
 188         struct ac_arg gs_tg_info;
 189         /* API GS */
 190         struct ac_arg gs2vs_offset;
 191         struct ac_arg gs_wave_id; /* GFX6 */
 192         struct ac_arg gs_vtx_offset[6]; /* in dwords (GFX6) */
 193         struct ac_arg gs_vtx01_offset; /* in dwords (GFX9) */
 194         struct ac_arg gs_vtx23_offset; /* in dwords (GFX9) */
 195         struct ac_arg gs_vtx45_offset; /* in dwords (GFX9) */
 196         /* PS */
 197         struct ac_arg pos_fixed_pt;
 198         /* CS */
 199         struct ac_arg block_size;
 200         struct ac_arg cs_user_data;
 201
 202         struct ac_llvm_compiler *compiler;
 203
 204         /* Preloaded descriptors. */
 205         LLVMValueRef esgs_ring;
 206         LLVMValueRef gsvs_ring[4];
 207         LLVMValueRef tess_offchip_ring;
 208
 209         LLVMValueRef invoc0_tess_factors[6]; /* outer[4], inner[2] */
 210         LLVMValueRef gs_next_vertex[4];
 211         LLVMValueRef gs_curprim_verts[4];
 212         LLVMValueRef gs_generated_prims[4];
 213         LLVMValueRef gs_ngg_emit;
 214         LLVMValueRef gs_ngg_scratch;
 215         LLVMValueRef postponed_kill;
 216         LLVMValueRef return_value;
 217
 218         LLVMTypeRef voidt;
 219         LLVMTypeRef i1;
 220         LLVMTypeRef i8;
 221         LLVMTypeRef i32;
 222         LLVMTypeRef i64;
 223         LLVMTypeRef i128;
 224         LLVMTypeRef f32;
 225         LLVMTypeRef v2i32;
 226         LLVMTypeRef v4i32;
 227         LLVMTypeRef v4f32;
 228         LLVMTypeRef v8i32;
 229
 230         LLVMValueRef i32_0;
 231         LLVMValueRef i32_1;
 232         LLVMValueRef i1false;
 233         LLVMValueRef i1true;
 234 };
 235
 236 static inline struct si_shader_context *
 237 si_shader_context(struct lp_build_tgsi_context *bld_base)
 238 {
 239         return (struct si_shader_context*)bld_base;
 240 }
 241
 242 static inline struct si_shader_context *
 243 si_shader_context_from_abi(struct ac_shader_abi *abi)
 244 {
 245         struct si_shader_context *ctx = NULL;
 246         return container_of(abi, ctx, abi);
 247 }
 248
 249 void si_create_function(struct si_shader_context *ctx,
 250                         const char *name,
 251                         LLVMTypeRef *returns, unsigned num_returns,
 252                         unsigned max_workgroup_size);
 253 unsigned si_llvm_compile(LLVMModuleRef M, struct si_shader_binary *binary,
 254                          struct ac_llvm_compiler *compiler,
 255                          struct pipe_debug_callback *debug,
 256                          bool less_optimized, unsigned wave_size);
 257
 258 LLVMTypeRef tgsi2llvmtype(struct lp_build_tgsi_context *bld_base,
 259                           enum tgsi_opcode_type type);
 260
 261 LLVMValueRef bitcast(struct lp_build_tgsi_context *bld_base,
 262                      enum tgsi_opcode_type type, LLVMValueRef value);
 263
 264 LLVMValueRef si_llvm_bound_index(struct si_shader_context *ctx,
 265                                  LLVMValueRef index,
 266                                  unsigned num);
 267
 268 void si_llvm_context_init(struct si_shader_context *ctx,
 269                           struct si_screen *sscreen,
 270                           struct ac_llvm_compiler *compiler,
 271                           unsigned wave_size,
 272                           unsigned ballot_mask_bits);
 273 void si_llvm_context_set_ir(struct si_shader_context *ctx,
 274                             struct si_shader *shader,
 275                             struct nir_shader *nir);
 276
 277 void si_llvm_create_func(struct si_shader_context *ctx,
 278                          const char *name,
 279                          LLVMTypeRef *return_types, unsigned num_return_elems);
 280
 281 void si_llvm_dispose(struct si_shader_context *ctx);
 282
 283 void si_llvm_optimize_module(struct si_shader_context *ctx);
 284
 285 LLVMValueRef si_llvm_emit_fetch_64bit(struct lp_build_tgsi_context *bld_base,
 286                                       LLVMTypeRef type,
 287                                       LLVMValueRef ptr,
 288                                       LLVMValueRef ptr2);
 289
 290 LLVMValueRef si_llvm_emit_fetch(struct lp_build_tgsi_context *bld_base,
 291                                 const struct tgsi_full_src_register *reg,
 292                                 enum tgsi_opcode_type type,
 293                                 unsigned swizzle);
 294
 295 void si_llvm_emit_kill(struct ac_shader_abi *abi, LLVMValueRef visible);
 296
 297 LLVMValueRef si_nir_load_input_tes(struct ac_shader_abi *abi,
 298                                    LLVMTypeRef type,
 299                                    LLVMValueRef vertex_index,
 300                                    LLVMValueRef param_index,
 301                                    unsigned const_index,
 302                                    unsigned location,
 303                                    unsigned driver_location,
 304                                    unsigned component,
 305                                    unsigned num_components,
 306                                    bool is_patch,
 307                                    bool is_compact,
 308                                    bool load_input);
 309
 310 LLVMValueRef si_llvm_load_input_gs(struct ac_shader_abi *abi,
 311                                    unsigned input_index,
 312                                    unsigned vtx_offset_param,
 313                                    LLVMTypeRef type,
 314                                    unsigned swizzle);
 315
 316 LLVMValueRef si_nir_lookup_interp_param(struct ac_shader_abi *abi,
 317                                         enum glsl_interp_mode interp,
 318                                         unsigned location);
 319
 320 void si_llvm_emit_store(struct lp_build_tgsi_context *bld_base,
 321                         const struct tgsi_full_instruction *inst,
 322                         const struct tgsi_opcode_info *info,
 323                         unsigned index,
 324                         LLVMValueRef dst[4]);
 325
 326 LLVMValueRef si_get_indirect_index(struct si_shader_context *ctx,
 327                                    const struct tgsi_ind_register *ind,
 328                                    unsigned addr_mul, int rel_index);
 329 LLVMValueRef si_get_bounded_indirect_index(struct si_shader_context *ctx,
 330                                            const struct tgsi_ind_register *ind,
 331                                            int rel_index, unsigned num);
 332 LLVMValueRef si_get_sample_id(struct si_shader_context *ctx);
 333
 334 void si_shader_context_init_alu(struct si_shader_context *ctx);
 335 void si_shader_context_init_mem(struct si_shader_context *ctx);
 336
 337 LLVMValueRef si_load_sampler_desc(struct si_shader_context *ctx,
 338                                   LLVMValueRef list, LLVMValueRef index,
 339                                   enum ac_descriptor_type type);
 340 LLVMValueRef si_load_image_desc(struct si_shader_context *ctx,
 341                                 LLVMValueRef list, LLVMValueRef index,
 342                                 enum ac_descriptor_type desc_type,
 343                                 bool uses_store, bool bindless);
 344 LLVMValueRef si_nir_emit_fbfetch(struct ac_shader_abi *abi);
 345
 346 void si_load_system_value(struct si_shader_context *ctx,
 347                           unsigned index,
 348                           const struct tgsi_full_declaration *decl);
 349 void si_declare_compute_memory(struct si_shader_context *ctx);
 350 void si_tgsi_declare_compute_memory(struct si_shader_context *ctx,
 351                                     const struct tgsi_full_declaration *decl);
 352
 353 LLVMValueRef si_get_primitive_id(struct si_shader_context *ctx,
 354                                  unsigned swizzle);
 355 void si_llvm_export_vs(struct si_shader_context *ctx,
 356                        struct si_shader_output_values *outputs,
 357                        unsigned noutput);
 358 void si_emit_streamout_output(struct si_shader_context *ctx,
 359                               LLVMValueRef const *so_buffers,
 360                               LLVMValueRef const *so_write_offsets,
 361                               struct pipe_stream_output *stream_out,
 362                               struct si_shader_output_values *shader_out);
 363
 364 void si_llvm_load_input_vs(
 365         struct si_shader_context *ctx,
 366         unsigned input_index,
 367         LLVMValueRef out[4]);
 368 void si_llvm_load_input_fs(
 369         struct si_shader_context *ctx,
 370         unsigned input_index,
 371         LLVMValueRef out[4]);
 372
 373 bool si_nir_build_llvm(struct si_shader_context *ctx, struct nir_shader *nir);
 374
 375 LLVMValueRef si_unpack_param(struct si_shader_context *ctx,
 376                              struct ac_arg param, unsigned rshift,
 377                              unsigned bitwidth);
 378 LLVMValueRef si_is_es_thread(struct si_shader_context *ctx);
 379 LLVMValueRef si_is_gs_thread(struct si_shader_context *ctx);
 380
 381 void gfx10_emit_ngg_epilogue(struct ac_shader_abi *abi,
 382                              unsigned max_outputs,
 383                              LLVMValueRef *addrs);
 384 void gfx10_ngg_gs_emit_vertex(struct si_shader_context *ctx,
 385                               unsigned stream,
 386                               LLVMValueRef *addrs);
 387 void gfx10_ngg_gs_emit_prologue(struct si_shader_context *ctx);
 388 void gfx10_ngg_gs_emit_epilogue(struct si_shader_context *ctx);
 389 void gfx10_ngg_calculate_subgroup_info(struct si_shader *shader);
 390
 391 #endif