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 "ac_shader_abi.h"
  29 #include "si_shader.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    struct ac_arg cs_shaderbuf[3];
 175    struct ac_arg cs_image[3];
 176
 177    struct ac_llvm_compiler *compiler;
 178
 179    /* Preloaded descriptors. */
 180    LLVMValueRef esgs_ring;
 181    LLVMValueRef gsvs_ring[4];
 182    LLVMValueRef tess_offchip_ring;
 183
 184    LLVMValueRef invoc0_tess_factors[6]; /* outer[4], inner[2] */
 185    LLVMValueRef gs_next_vertex[4];
 186    LLVMValueRef gs_curprim_verts[4];
 187    LLVMValueRef gs_generated_prims[4];
 188    LLVMValueRef gs_ngg_emit;
 189    LLVMValueRef gs_ngg_scratch;
 190    LLVMValueRef postponed_kill;
 191    LLVMValueRef return_value;
 192 };
 193
 194 static inline struct si_shader_context *si_shader_context_from_abi(struct ac_shader_abi *abi)
 195 {
 196    struct si_shader_context *ctx = NULL;
 197    return container_of(abi, ctx, abi);
 198 }
 199
 200 bool si_is_multi_part_shader(struct si_shader *shader);
 201 bool si_is_merged_shader(struct si_shader *shader);
 202 void si_add_arg_checked(struct ac_shader_args *args, enum ac_arg_regfile file, unsigned registers,
 203                         enum ac_arg_type type, struct ac_arg *arg, unsigned idx);
 204 unsigned si_get_max_workgroup_size(const struct si_shader *shader);
 205 bool si_need_ps_prolog(const union si_shader_part_key *key);
 206 void si_get_ps_prolog_key(struct si_shader *shader, union si_shader_part_key *key,
 207                           bool separate_prolog);
 208 void si_get_ps_epilog_key(struct si_shader *shader, union si_shader_part_key *key);
 209 void si_fix_resource_usage(struct si_screen *sscreen, struct si_shader *shader);
 210 void si_create_function(struct si_shader_context *ctx, bool ngg_cull_shader);
 211
 212 bool gfx10_ngg_export_prim_early(struct si_shader *shader);
 213 void gfx10_ngg_build_sendmsg_gs_alloc_req(struct si_shader_context *ctx);
 214 void gfx10_ngg_build_export_prim(struct si_shader_context *ctx, LLVMValueRef user_edgeflags[3],
 215                                  LLVMValueRef prim_passthrough);
 216 void gfx10_emit_ngg_culling_epilogue(struct ac_shader_abi *abi, unsigned max_outputs,
 217                                      LLVMValueRef *addrs);
 218 void gfx10_emit_ngg_epilogue(struct ac_shader_abi *abi, unsigned max_outputs, LLVMValueRef *addrs);
 219 void gfx10_ngg_gs_emit_vertex(struct si_shader_context *ctx, unsigned stream, LLVMValueRef *addrs);
 220 void gfx10_ngg_gs_emit_prologue(struct si_shader_context *ctx);
 221 void gfx10_ngg_gs_emit_epilogue(struct si_shader_context *ctx);
 222 bool gfx10_ngg_calculate_subgroup_info(struct si_shader *shader);
 223
 224 /* si_shader_llvm.c */
 225 bool si_compile_llvm(struct si_screen *sscreen, struct si_shader_binary *binary,
 226                      struct ac_shader_config *conf, struct ac_llvm_compiler *compiler,
 227                      struct ac_llvm_context *ac, struct pipe_debug_callback *debug,
 228                      enum pipe_shader_type shader_type, const char *name, bool less_optimized);
 229 void si_llvm_context_init(struct si_shader_context *ctx, struct si_screen *sscreen,
 230                           struct ac_llvm_compiler *compiler, unsigned wave_size);
 231 void si_llvm_create_func(struct si_shader_context *ctx, const char *name, LLVMTypeRef *return_types,
 232                          unsigned num_return_elems, unsigned max_workgroup_size);
 233 void si_llvm_optimize_module(struct si_shader_context *ctx);
 234 void si_llvm_dispose(struct si_shader_context *ctx);
 235 LLVMValueRef si_buffer_load_const(struct si_shader_context *ctx, LLVMValueRef resource,
 236                                   LLVMValueRef offset);
 237 void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret);
 238 LLVMValueRef si_insert_input_ret(struct si_shader_context *ctx, LLVMValueRef ret,
 239                                  struct ac_arg param, unsigned return_index);
 240 LLVMValueRef si_insert_input_ret_float(struct si_shader_context *ctx, LLVMValueRef ret,
 241                                        struct ac_arg param, unsigned return_index);
 242 LLVMValueRef si_insert_input_ptr(struct si_shader_context *ctx, LLVMValueRef ret,
 243                                  struct ac_arg param, unsigned return_index);
 244 LLVMValueRef si_prolog_get_rw_buffers(struct si_shader_context *ctx);
 245 LLVMValueRef si_build_gather_64bit(struct si_shader_context *ctx, LLVMTypeRef type,
 246                                    LLVMValueRef val1, LLVMValueRef val2);
 247 void si_llvm_emit_barrier(struct si_shader_context *ctx);
 248 void si_llvm_declare_esgs_ring(struct si_shader_context *ctx);
 249 void si_init_exec_from_input(struct si_shader_context *ctx, struct ac_arg param,
 250                              unsigned bitoffset);
 251 LLVMValueRef si_unpack_param(struct si_shader_context *ctx, struct ac_arg param, unsigned rshift,
 252                              unsigned bitwidth);
 253 LLVMValueRef si_get_primitive_id(struct si_shader_context *ctx, unsigned swizzle);
 254 LLVMValueRef si_llvm_get_block_size(struct ac_shader_abi *abi);
 255 void si_llvm_declare_compute_memory(struct si_shader_context *ctx);
 256 bool si_nir_build_llvm(struct si_shader_context *ctx, struct nir_shader *nir);
 257 void si_build_wrapper_function(struct si_shader_context *ctx, LLVMValueRef *parts,
 258                                unsigned num_parts, unsigned main_part,
 259                                unsigned next_shader_first_part);
 260
 261 /* si_shader_llvm_gs.c */
 262 LLVMValueRef si_is_es_thread(struct si_shader_context *ctx);
 263 LLVMValueRef si_is_gs_thread(struct si_shader_context *ctx);
 264 void si_llvm_emit_es_epilogue(struct ac_shader_abi *abi, unsigned max_outputs, LLVMValueRef *addrs);
 265 void si_preload_esgs_ring(struct si_shader_context *ctx);
 266 void si_preload_gs_rings(struct si_shader_context *ctx);
 267 void si_llvm_build_gs_prolog(struct si_shader_context *ctx, union si_shader_part_key *key);
 268 void si_llvm_init_gs_callbacks(struct si_shader_context *ctx);
 269
 270 /* si_shader_llvm_tess.c */
 271 void si_llvm_preload_tes_rings(struct si_shader_context *ctx);
 272 void si_llvm_emit_ls_epilogue(struct ac_shader_abi *abi, unsigned max_outputs, LLVMValueRef *addrs);
 273 void si_llvm_build_tcs_epilog(struct si_shader_context *ctx, union si_shader_part_key *key);
 274 void si_llvm_init_tcs_callbacks(struct si_shader_context *ctx);
 275 void si_llvm_init_tes_callbacks(struct si_shader_context *ctx, bool ngg_cull_shader);
 276
 277 /* si_shader_llvm_ps.c */
 278 LLVMValueRef si_get_sample_id(struct si_shader_context *ctx);
 279 void si_llvm_build_ps_prolog(struct si_shader_context *ctx, union si_shader_part_key *key);
 280 void si_llvm_build_ps_epilog(struct si_shader_context *ctx, union si_shader_part_key *key);
 281 void si_llvm_build_monolithic_ps(struct si_shader_context *ctx, struct si_shader *shader);
 282 void si_llvm_init_ps_callbacks(struct si_shader_context *ctx);
 283
 284 /* si_shader_llvm_resources.c */
 285 void si_llvm_init_resource_callbacks(struct si_shader_context *ctx);
 286
 287 /* si_shader_llvm_vs.c */
 288 void si_llvm_load_vs_inputs(struct si_shader_context *ctx, struct nir_shader *nir);
 289 void si_llvm_streamout_store_output(struct si_shader_context *ctx, LLVMValueRef const *so_buffers,
 290                                     LLVMValueRef const *so_write_offsets,
 291                                     struct pipe_stream_output *stream_out,
 292                                     struct si_shader_output_values *shader_out);
 293 void si_llvm_emit_streamout(struct si_shader_context *ctx, struct si_shader_output_values *outputs,
 294                             unsigned noutput, unsigned stream);
 295 void si_llvm_build_vs_exports(struct si_shader_context *ctx,
 296                               struct si_shader_output_values *outputs, unsigned noutput);
 297 void si_llvm_emit_vs_epilogue(struct ac_shader_abi *abi, unsigned max_outputs, LLVMValueRef *addrs);
 298 void si_llvm_build_vs_prolog(struct si_shader_context *ctx, union si_shader_part_key *key);
 299 void si_llvm_init_vs_callbacks(struct si_shader_context *ctx, bool ngg_cull_shader);
 300
 301 #endif