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 /* Ideally pass the sample mask input to the PS epilog as v14, which
34 * is its usual location, so that the shader doesn't have to add v_mov.
35 */
36 #define PS_EPILOG_SAMPLEMASK_MIN_LOC 14
37
38 struct si_shader_output_values {
39 LLVMValueRef values[4];
40 ubyte vertex_stream[4];
41 ubyte semantic;
42 };
43
44 struct si_shader_context {
45 struct ac_llvm_context ac;
46 struct si_shader *shader;
47 struct si_shader_selector *next_shader_sel;
48 struct si_screen *screen;
49
50 gl_shader_stage stage;
51
52 /* For clamping the non-constant index in resource indexing: */
53 unsigned num_const_buffers;
54 unsigned num_shader_buffers;
55 unsigned num_images;
56 unsigned num_samplers;
57
58 struct ac_shader_args args;
59 struct ac_shader_abi abi;
60
61 LLVMBasicBlockRef merged_wrap_if_entry_block;
62 int merged_wrap_if_label;
63
64 LLVMValueRef main_fn;
65 LLVMTypeRef return_type;
66
67 struct ac_arg const_and_shader_buffers;
68 struct ac_arg samplers_and_images;
69
70 /* For merged shaders, the per-stage descriptors for the stage other
71 * than the one we're processing, used to pass them through from the
72 * first stage to the second.
73 */
74 struct ac_arg other_const_and_shader_buffers;
75 struct ac_arg other_samplers_and_images;
76
77 struct ac_arg internal_bindings;
78 struct ac_arg bindless_samplers_and_images;
79 struct ac_arg small_prim_cull_info;
80 /* API VS */
81 struct ac_arg vb_descriptors[5];
82 struct ac_arg vertex_index0;
83 /* VS states and layout of LS outputs / TCS inputs at the end
84 * [0] = clamp vertex color
85 * [1] = indexed
86 * [2:3] = NGG: output primitive type
87 * [4:5] = NGG: provoking vertex index
88 * [6] = NGG: streamout queries enabled
89 * [7:10] = NGG: small prim filter precision = num_samples / quant_mode,
90 * but in reality it's: 1/2^n, from 1/16 to 1/4096 = 1/2^4 to 1/2^12
91 * Only the first 4 bits of the exponent are stored.
92 * Set it like this: (fui(num_samples / quant_mode) >> 23)
93 * Expand to FP32 like this: ((0x70 | value) << 23);
94 * With 0x70 = 112, we get 2^(112 + value - 127) = 2^(value - 15)
95 * = 1/2^(15 - value) in FP32
96 * [11:23] = stride between patches in DW = num_inputs * num_vertices * 4
97 * max = 32*32*4 + 32*4
98 * [24:31] = stride between vertices in DW = num_inputs * 4
99 * max = 32*4
100 */
101 struct ac_arg vs_state_bits;
102 struct ac_arg vs_blit_inputs;
103
104 /* API TCS & TES */
105 /* Layout of TCS outputs in the offchip buffer
106 * # 6 bits
107 * [0:5] = the number of patches per threadgroup - 1, max = 63
108 * # 5 bits
109 * [6:10] = the number of output vertices per patch - 1, max = 31
110 * # 21 bits
111 * [11:31] = the offset of per patch attributes in the buffer in bytes.
112 * max = NUM_PATCHES*32*32*16 = 1M
113 */
114 struct ac_arg tcs_offchip_layout;
115
116 /* API TCS */
117 /* Offsets where TCS outputs and TCS patch outputs live in LDS:
118 * [0:15] = TCS output patch0 offset / 16, max = NUM_PATCHES * 32 * 32 = 64K (TODO: not enough bits)
119 * [16:31] = TCS output patch0 offset for per-patch / 16
120 * max = (NUM_PATCHES + 1) * 32*32 = 66624 (TODO: not enough bits)
121 */
122 struct ac_arg tcs_out_lds_offsets;
123 /* Layout of TCS outputs / TES inputs:
124 * [0:12] = stride between output patches in DW, num_outputs * num_vertices * 4
125 * max = 32*32*4 + 32*4 = 4224
126 * [13:18] = gl_PatchVerticesIn, max = 32
127 * [19:31] = high 13 bits of the 32-bit address of tessellation ring buffers
128 */
129 struct ac_arg tcs_out_lds_layout;
130
131 /* API TES */
132 struct ac_arg tes_offchip_addr;
133 /* PS */
134 struct ac_arg pos_fixed_pt;
135 /* CS */
136 struct ac_arg block_size;
137 struct ac_arg cs_user_data;
138 struct ac_arg cs_shaderbuf[3];
139 struct ac_arg cs_image[3];
140
141 struct ac_llvm_compiler *compiler;
142
143 /* Preloaded descriptors. */
144 LLVMValueRef esgs_ring;
145 LLVMValueRef gsvs_ring[4];
146 LLVMValueRef tess_offchip_ring;
147
148 LLVMValueRef invoc0_tess_factors[6]; /* outer[4], inner[2] */
149 LLVMValueRef gs_next_vertex[4];
150 LLVMValueRef gs_curprim_verts[4];
151 LLVMValueRef gs_generated_prims[4];
152 LLVMValueRef gs_ngg_emit;
153 LLVMValueRef gs_ngg_scratch;
154 LLVMValueRef return_value;
155 };
156
si_shader_context_from_abi(struct ac_shader_abi * abi)157 static inline struct si_shader_context *si_shader_context_from_abi(struct ac_shader_abi *abi)
158 {
159 return container_of(abi, struct si_shader_context, abi);
160 }
161
162 /* si_shader.c */
163 bool si_is_multi_part_shader(struct si_shader *shader);
164 bool si_is_merged_shader(struct si_shader *shader);
165 void si_add_arg_checked(struct ac_shader_args *args, enum ac_arg_regfile file, unsigned registers,
166 enum ac_arg_type type, struct ac_arg *arg, unsigned idx);
167 void si_init_shader_args(struct si_shader_context *ctx, bool ngg_cull_shader);
168 unsigned si_get_max_workgroup_size(const struct si_shader *shader);
169 bool si_vs_needs_prolog(const struct si_shader_selector *sel,
170 const struct si_vs_prolog_bits *prolog_key,
171 const struct si_shader_key *key, bool ngg_cull_shader);
172 void si_get_vs_prolog_key(const struct si_shader_info *info, unsigned num_input_sgprs,
173 bool ngg_cull_shader, const struct si_vs_prolog_bits *prolog_key,
174 struct si_shader *shader_out, union si_shader_part_key *key);
175 struct nir_shader *si_get_nir_shader(struct si_shader_selector *sel,
176 const struct si_shader_key *key,
177 bool *free_nir);
178 bool si_need_ps_prolog(const union si_shader_part_key *key);
179 void si_get_ps_prolog_key(struct si_shader *shader, union si_shader_part_key *key,
180 bool separate_prolog);
181 void si_get_ps_epilog_key(struct si_shader *shader, union si_shader_part_key *key);
182 void si_fix_resource_usage(struct si_screen *sscreen, struct si_shader *shader);
183
184 /* gfx10_shader_ngg.c */
185 bool gfx10_ngg_export_prim_early(struct si_shader *shader);
186 void gfx10_ngg_build_sendmsg_gs_alloc_req(struct si_shader_context *ctx);
187 void gfx10_ngg_build_export_prim(struct si_shader_context *ctx, LLVMValueRef user_edgeflags[3],
188 LLVMValueRef prim_passthrough);
189 void gfx10_emit_ngg_culling_epilogue(struct ac_shader_abi *abi);
190 void gfx10_emit_ngg_epilogue(struct ac_shader_abi *abi);
191 void gfx10_ngg_gs_emit_vertex(struct si_shader_context *ctx, unsigned stream, LLVMValueRef *addrs);
192 void gfx10_ngg_gs_emit_prologue(struct si_shader_context *ctx);
193 void gfx10_ngg_gs_emit_epilogue(struct si_shader_context *ctx);
194 unsigned gfx10_ngg_get_scratch_dw_size(struct si_shader *shader);
195 bool gfx10_ngg_calculate_subgroup_info(struct si_shader *shader);
196
197 /* si_shader_llvm.c */
198 bool si_compile_llvm(struct si_screen *sscreen, struct si_shader_binary *binary,
199 struct ac_shader_config *conf, struct ac_llvm_compiler *compiler,
200 struct ac_llvm_context *ac, struct pipe_debug_callback *debug,
201 gl_shader_stage stage, const char *name, bool less_optimized);
202 void si_llvm_context_init(struct si_shader_context *ctx, struct si_screen *sscreen,
203 struct ac_llvm_compiler *compiler, unsigned wave_size);
204 void si_llvm_create_func(struct si_shader_context *ctx, const char *name, LLVMTypeRef *return_types,
205 unsigned num_return_elems, unsigned max_workgroup_size);
206 void si_llvm_create_main_func(struct si_shader_context *ctx, bool ngg_cull_shader);
207 void si_llvm_optimize_module(struct si_shader_context *ctx);
208 void si_llvm_dispose(struct si_shader_context *ctx);
209 LLVMValueRef si_buffer_load_const(struct si_shader_context *ctx, LLVMValueRef resource,
210 LLVMValueRef offset);
211 void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret);
212 LLVMValueRef si_insert_input_ret(struct si_shader_context *ctx, LLVMValueRef ret,
213 struct ac_arg param, unsigned return_index);
214 LLVMValueRef si_insert_input_ret_float(struct si_shader_context *ctx, LLVMValueRef ret,
215 struct ac_arg param, unsigned return_index);
216 LLVMValueRef si_insert_input_ptr(struct si_shader_context *ctx, LLVMValueRef ret,
217 struct ac_arg param, unsigned return_index);
218 LLVMValueRef si_prolog_get_internal_bindings(struct si_shader_context *ctx);
219 void si_llvm_emit_barrier(struct si_shader_context *ctx);
220 void si_llvm_declare_esgs_ring(struct si_shader_context *ctx);
221 LLVMValueRef si_unpack_param(struct si_shader_context *ctx, struct ac_arg param, unsigned rshift,
222 unsigned bitwidth);
223 LLVMValueRef si_get_primitive_id(struct si_shader_context *ctx, unsigned swizzle);
224 void si_build_wrapper_function(struct si_shader_context *ctx, LLVMValueRef *parts,
225 unsigned num_parts, unsigned main_part,
226 unsigned next_shader_first_part, bool same_thread_count);
227 bool si_llvm_translate_nir(struct si_shader_context *ctx, struct si_shader *shader,
228 struct nir_shader *nir, bool free_nir, bool ngg_cull_shader);
229 bool si_llvm_compile_shader(struct si_screen *sscreen, struct ac_llvm_compiler *compiler,
230 struct si_shader *shader, struct pipe_debug_callback *debug,
231 struct nir_shader *nir, bool free_nir);
232
233 /* si_shader_llvm_gs.c */
234 LLVMValueRef si_is_es_thread(struct si_shader_context *ctx);
235 LLVMValueRef si_is_gs_thread(struct si_shader_context *ctx);
236 void si_llvm_emit_es_epilogue(struct ac_shader_abi *abi);
237 void si_preload_esgs_ring(struct si_shader_context *ctx);
238 void si_preload_gs_rings(struct si_shader_context *ctx);
239 void si_llvm_build_gs_prolog(struct si_shader_context *ctx, union si_shader_part_key *key);
240 void si_llvm_init_gs_callbacks(struct si_shader_context *ctx);
241
242 /* si_shader_llvm_tess.c */
243 void si_llvm_preload_tes_rings(struct si_shader_context *ctx);
244 void si_llvm_emit_ls_epilogue(struct ac_shader_abi *abi);
245 void si_llvm_build_tcs_epilog(struct si_shader_context *ctx, union si_shader_part_key *key);
246 void si_llvm_init_tcs_callbacks(struct si_shader_context *ctx);
247 void si_llvm_init_tes_callbacks(struct si_shader_context *ctx, bool ngg_cull_shader);
248
249 /* si_shader_llvm_ps.c */
250 LLVMValueRef si_get_sample_id(struct si_shader_context *ctx);
251 void si_llvm_build_ps_prolog(struct si_shader_context *ctx, union si_shader_part_key *key);
252 void si_llvm_build_ps_epilog(struct si_shader_context *ctx, union si_shader_part_key *key);
253 void si_llvm_build_monolithic_ps(struct si_shader_context *ctx, struct si_shader *shader);
254 void si_llvm_init_ps_callbacks(struct si_shader_context *ctx);
255
256 /* si_shader_llvm_resources.c */
257 void si_llvm_init_resource_callbacks(struct si_shader_context *ctx);
258
259 /* si_shader_llvm_vs.c */
260 void si_llvm_streamout_store_output(struct si_shader_context *ctx, LLVMValueRef const *so_buffers,
261 LLVMValueRef const *so_write_offsets,
262 struct pipe_stream_output *stream_out,
263 struct si_shader_output_values *shader_out);
264 void si_llvm_emit_streamout(struct si_shader_context *ctx, struct si_shader_output_values *outputs,
265 unsigned noutput, unsigned stream);
266 void si_llvm_build_vs_exports(struct si_shader_context *ctx,
267 struct si_shader_output_values *outputs, unsigned noutput);
268 void si_llvm_emit_vs_epilogue(struct ac_shader_abi *abi);
269 void si_llvm_build_vs_prolog(struct si_shader_context *ctx, union si_shader_part_key *key);
270 void si_llvm_init_vs_callbacks(struct si_shader_context *ctx, bool ngg_cull_shader);
271
272 #endif
273