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 struct si_shader_output_values {
34 LLVMValueRef values[4];
35 ubyte vertex_streams;
36 ubyte semantic;
37 };
38
39 struct si_shader_context {
40 struct ac_llvm_context ac;
41 struct si_shader *shader;
42 struct si_shader_selector *next_shader_sel;
43 struct si_screen *screen;
44
45 gl_shader_stage stage;
46
47 /* For clamping the non-constant index in resource indexing: */
48 unsigned num_const_buffers;
49 unsigned num_shader_buffers;
50 unsigned num_images;
51 unsigned num_samplers;
52
53 struct ac_shader_args args;
54 struct ac_shader_abi abi;
55
56 LLVMBasicBlockRef merged_wrap_if_entry_block;
57 int merged_wrap_if_label;
58
59 LLVMValueRef main_fn;
60 LLVMTypeRef return_type;
61
62 struct ac_arg const_and_shader_buffers;
63 struct ac_arg samplers_and_images;
64
65 /* For merged shaders, the per-stage descriptors for the stage other
66 * than the one we're processing, used to pass them through from the
67 * first stage to the second.
68 */
69 struct ac_arg other_const_and_shader_buffers;
70 struct ac_arg other_samplers_and_images;
71
72 struct ac_arg internal_bindings;
73 struct ac_arg bindless_samplers_and_images;
74 struct ac_arg small_prim_cull_info;
75 /* API VS */
76 struct ac_arg vb_descriptors[5];
77 struct ac_arg vertex_index0;
78 /* VS states and layout of LS outputs / TCS inputs at the end
79 * [0] = clamp vertex color
80 * [1] = indexed
81 * [2:3] = NGG: output primitive type
82 * [4:5] = NGG: provoking vertex index
83 * [6] = NGG: streamout queries enabled
84 * [7:10] = NGG: small prim filter precision = num_samples / quant_mode,
85 * but in reality it's: 1/2^n, from 1/16 to 1/4096 = 1/2^4 to 1/2^12
86 * Only the first 4 bits of the exponent are stored.
87 * Set it like this: (fui(num_samples / quant_mode) >> 23)
88 * Expand to FP32 like this: ((0x70 | value) << 23);
89 * With 0x70 = 112, we get 2^(112 + value - 127) = 2^(value - 15)
90 * = 1/2^(15 - value) in FP32
91 * [11:23] = stride between patches in DW = num_inputs * num_vertices * 4
92 * max = 32*32*4 + 32*4
93 * [24:31] = stride between vertices in DW = num_inputs * 4
94 * max = 32*4
95 */
96 struct ac_arg vs_state_bits;
97 struct ac_arg vs_blit_inputs;
98
99 /* API TCS & TES */
100 /* Layout of TCS outputs in the offchip buffer
101 * # 6 bits
102 * [0:5] = the number of patches per threadgroup - 1, max = 63
103 * # 5 bits
104 * [6:10] = the number of output vertices per patch - 1, max = 31
105 * # 21 bits
106 * [11:31] = the offset of per patch attributes in the buffer in bytes.
107 * max = NUM_PATCHES*32*32*16 = 1M
108 */
109 struct ac_arg tcs_offchip_layout;
110
111 /* API TCS */
112 /* Offsets where TCS outputs and TCS patch outputs live in LDS:
113 * [0:15] = TCS output patch0 offset / 16, max = NUM_PATCHES * 32 * 32 = 64K (TODO: not enough bits)
114 * [16:31] = TCS output patch0 offset for per-patch / 16
115 * max = (NUM_PATCHES + 1) * 32*32 = 66624 (TODO: not enough bits)
116 */
117 struct ac_arg tcs_out_lds_offsets;
118 /* Layout of TCS outputs / TES inputs:
119 * [0:12] = stride between output patches in DW, num_outputs * num_vertices * 4
120 * max = 32*32*4 + 32*4 = 4224
121 * [13:18] = gl_PatchVerticesIn, max = 32
122 * [19:31] = high 13 bits of the 32-bit address of tessellation ring buffers
123 */
124 struct ac_arg tcs_out_lds_layout;
125
126 /* API TES */
127 struct ac_arg tes_offchip_addr;
128 /* PS */
129 struct ac_arg pos_fixed_pt;
130 /* CS */
131 struct ac_arg block_size;
132 struct ac_arg cs_user_data;
133 struct ac_arg cs_shaderbuf[3];
134 struct ac_arg cs_image[3];
135
136 struct ac_llvm_compiler *compiler;
137
138 /* GS vertex offsets unpacked with the gfx6-9 tristrip_adj bug workaround. */
139 LLVMValueRef gs_vtx_offset[6];
140
141 /* Preloaded descriptors. */
142 LLVMValueRef esgs_ring;
143 LLVMValueRef gsvs_ring[4];
144 LLVMValueRef tess_offchip_ring;
145
146 LLVMValueRef invoc0_tess_factors[6]; /* outer[4], inner[2] */
147 LLVMValueRef gs_next_vertex[4];
148 LLVMValueRef gs_curprim_verts[4];
149 LLVMValueRef gs_generated_prims[4];
150 LLVMValueRef gs_ngg_emit;
151 LLVMValueRef gs_ngg_scratch;
152 LLVMValueRef return_value;
153 };
154
si_shader_context_from_abi(struct ac_shader_abi * abi)155 static inline struct si_shader_context *si_shader_context_from_abi(struct ac_shader_abi *abi)
156 {
157 return container_of(abi, struct si_shader_context, abi);
158 }
159
160 /* si_shader.c */
161 bool si_is_multi_part_shader(struct si_shader *shader);
162 bool si_is_merged_shader(struct si_shader *shader);
163 void si_add_arg_checked(struct ac_shader_args *args, enum ac_arg_regfile file, unsigned registers,
164 enum ac_arg_type type, struct ac_arg *arg, unsigned idx);
165 void si_init_shader_args(struct si_shader_context *ctx, bool ngg_cull_shader);
166 unsigned si_get_max_workgroup_size(const struct si_shader *shader);
167 bool si_vs_needs_prolog(const struct si_shader_selector *sel,
168 const struct si_vs_prolog_bits *prolog_key,
169 const union si_shader_key *key, bool ngg_cull_shader, bool is_gs);
170 void si_get_vs_prolog_key(const struct si_shader_info *info, unsigned num_input_sgprs,
171 bool ngg_cull_shader, const struct si_vs_prolog_bits *prolog_key,
172 struct si_shader *shader_out, union si_shader_part_key *key);
173 struct nir_shader *si_get_nir_shader(struct si_shader_selector *sel,
174 const union si_shader_key *key,
175 bool *free_nir);
176 bool si_need_ps_prolog(const union si_shader_part_key *key);
177 void si_get_ps_prolog_key(struct si_shader *shader, union si_shader_part_key *key,
178 bool separate_prolog);
179 void si_get_ps_epilog_key(struct si_shader *shader, union si_shader_part_key *key);
180 void si_fix_resource_usage(struct si_screen *sscreen, struct si_shader *shader);
181
182 /* gfx10_shader_ngg.c */
183 LLVMValueRef gfx10_get_thread_id_in_tg(struct si_shader_context *ctx);
184 bool gfx10_ngg_export_prim_early(struct si_shader *shader);
185 void gfx10_ngg_build_sendmsg_gs_alloc_req(struct si_shader_context *ctx);
186 void gfx10_ngg_build_export_prim(struct si_shader_context *ctx, LLVMValueRef user_edgeflags[3],
187 LLVMValueRef prim_passthrough);
188 void gfx10_emit_ngg_culling_epilogue(struct ac_shader_abi *abi);
189 void gfx10_emit_ngg_epilogue(struct ac_shader_abi *abi);
190 void gfx10_ngg_gs_emit_vertex(struct si_shader_context *ctx, unsigned stream, LLVMValueRef *addrs);
191 void gfx10_ngg_gs_emit_prologue(struct si_shader_context *ctx);
192 void gfx10_ngg_gs_emit_epilogue(struct si_shader_context *ctx);
193 unsigned gfx10_ngg_get_scratch_dw_size(struct si_shader *shader);
194 bool gfx10_ngg_calculate_subgroup_info(struct si_shader *shader);
195
196 /* si_shader_llvm.c */
197 bool si_compile_llvm(struct si_screen *sscreen, struct si_shader_binary *binary,
198 struct ac_shader_config *conf, struct ac_llvm_compiler *compiler,
199 struct ac_llvm_context *ac, struct pipe_debug_callback *debug,
200 gl_shader_stage stage, const char *name, bool less_optimized);
201 void si_llvm_context_init(struct si_shader_context *ctx, struct si_screen *sscreen,
202 struct ac_llvm_compiler *compiler, unsigned wave_size);
203 void si_llvm_create_func(struct si_shader_context *ctx, const char *name, LLVMTypeRef *return_types,
204 unsigned num_return_elems, unsigned max_workgroup_size);
205 void si_llvm_create_main_func(struct si_shader_context *ctx, bool ngg_cull_shader);
206 void si_llvm_optimize_module(struct si_shader_context *ctx);
207 void si_llvm_dispose(struct si_shader_context *ctx);
208 LLVMValueRef si_buffer_load_const(struct si_shader_context *ctx, LLVMValueRef resource,
209 LLVMValueRef offset);
210 void si_llvm_build_ret(struct si_shader_context *ctx, LLVMValueRef ret);
211 LLVMValueRef si_insert_input_ret(struct si_shader_context *ctx, LLVMValueRef ret,
212 struct ac_arg param, unsigned return_index);
213 LLVMValueRef si_insert_input_ret_float(struct si_shader_context *ctx, LLVMValueRef ret,
214 struct ac_arg param, unsigned return_index);
215 LLVMValueRef si_insert_input_ptr(struct si_shader_context *ctx, LLVMValueRef ret,
216 struct ac_arg param, unsigned return_index);
217 LLVMValueRef si_prolog_get_internal_bindings(struct si_shader_context *ctx);
218 void si_llvm_emit_barrier(struct si_shader_context *ctx);
219 void si_llvm_declare_esgs_ring(struct si_shader_context *ctx);
220 LLVMValueRef si_unpack_param(struct si_shader_context *ctx, struct ac_arg param, unsigned rshift,
221 unsigned bitwidth);
222 LLVMValueRef si_get_primitive_id(struct si_shader_context *ctx, unsigned swizzle);
223 void si_build_wrapper_function(struct si_shader_context *ctx, LLVMValueRef *parts,
224 unsigned num_parts, unsigned main_part,
225 unsigned next_shader_first_part, bool same_thread_count);
226 bool si_llvm_translate_nir(struct si_shader_context *ctx, struct si_shader *shader,
227 struct nir_shader *nir, bool free_nir, bool ngg_cull_shader);
228 bool si_llvm_compile_shader(struct si_screen *sscreen, struct ac_llvm_compiler *compiler,
229 struct si_shader *shader, struct pipe_debug_callback *debug,
230 struct nir_shader *nir, bool free_nir);
231
232 /* si_shader_llvm_gs.c */
233 LLVMValueRef si_is_es_thread(struct si_shader_context *ctx);
234 LLVMValueRef si_is_gs_thread(struct si_shader_context *ctx);
235 void si_llvm_emit_es_epilogue(struct ac_shader_abi *abi);
236 void si_preload_esgs_ring(struct si_shader_context *ctx);
237 void si_preload_gs_rings(struct si_shader_context *ctx);
238 void si_llvm_init_gs_callbacks(struct si_shader_context *ctx);
239
240 /* si_shader_llvm_tess.c */
241 void si_llvm_preload_tes_rings(struct si_shader_context *ctx);
242 void si_llvm_emit_ls_epilogue(struct ac_shader_abi *abi);
243 void si_llvm_build_tcs_epilog(struct si_shader_context *ctx, union si_shader_part_key *key);
244 void si_llvm_init_tcs_callbacks(struct si_shader_context *ctx);
245 void si_llvm_init_tes_callbacks(struct si_shader_context *ctx, bool ngg_cull_shader);
246
247 /* si_shader_llvm_ps.c */
248 LLVMValueRef si_get_sample_id(struct si_shader_context *ctx);
249 void si_llvm_build_ps_prolog(struct si_shader_context *ctx, union si_shader_part_key *key);
250 void si_llvm_build_ps_epilog(struct si_shader_context *ctx, union si_shader_part_key *key);
251 void si_llvm_build_monolithic_ps(struct si_shader_context *ctx, struct si_shader *shader);
252 void si_llvm_init_ps_callbacks(struct si_shader_context *ctx);
253
254 /* si_shader_llvm_resources.c */
255 void si_llvm_init_resource_callbacks(struct si_shader_context *ctx);
256
257 /* si_shader_llvm_vs.c */
258 void si_llvm_clipvertex_to_clipdist(struct si_shader_context *ctx,
259 struct ac_export_args clipdist[2], LLVMValueRef clipvertex[4]);
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