2 * Copyright © 2014 Intel Corporation
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5 * copy of this software and associated documentation files (the "Software"),
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9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
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15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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21 * DEALINGS IN THE SOFTWARE.
27 * Tessellation evaluation shader state upload code.
30 #include "brw_context.h"
31 #include "compiler/brw_nir.h"
32 #include "brw_program.h"
33 #include "brw_state.h"
34 #include "program/prog_parameter.h"
37 brw_tes_debug_recompile(struct brw_context
*brw
, struct gl_program
*prog
,
38 const struct brw_tes_prog_key
*key
)
40 perf_debug("Recompiling tessellation evaluation shader for program %d\n",
44 const struct brw_tes_prog_key
*old_key
=
45 brw_find_previous_compile(&brw
->cache
, BRW_CACHE_TES_PROG
,
46 key
->program_string_id
);
49 perf_debug(" Didn't find previous compile in the shader cache for "
54 found
|= brw_debug_recompile_sampler_key(brw
, &old_key
->tex
, &key
->tex
);
55 found
|= key_debug(brw
, "inputs read", old_key
->inputs_read
,
57 found
|= key_debug(brw
, "patch inputs read", old_key
->patch_inputs_read
,
58 key
->patch_inputs_read
);
61 perf_debug(" Something else\n");
66 brw_codegen_tes_prog(struct brw_context
*brw
,
67 struct brw_program
*tep
,
68 struct brw_tes_prog_key
*key
)
70 const struct brw_compiler
*compiler
= brw
->screen
->compiler
;
71 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
72 struct brw_stage_state
*stage_state
= &brw
->tes
.base
;
73 nir_shader
*nir
= tep
->program
.nir
;
74 struct brw_tes_prog_data prog_data
;
75 bool start_busy
= false;
76 double start_time
= 0;
78 memset(&prog_data
, 0, sizeof(prog_data
));
80 brw_assign_common_binding_table_offsets(devinfo
, &tep
->program
,
81 &prog_data
.base
.base
, 0);
83 /* Allocate the references to the uniforms that will end up in the
84 * prog_data associated with the compiled program, and which will be freed
87 * Note: param_count needs to be num_uniform_components * 4, since we add
88 * padding around uniform values below vec4 size, so the worst case is that
89 * every uniform is a float which gets padded to the size of a vec4.
91 int param_count
= nir
->num_uniforms
/ 4;
93 prog_data
.base
.base
.param
=
94 rzalloc_array(NULL
, const gl_constant_value
*, param_count
);
95 prog_data
.base
.base
.pull_param
=
96 rzalloc_array(NULL
, const gl_constant_value
*, param_count
);
97 prog_data
.base
.base
.image_param
=
98 rzalloc_array(NULL
, struct brw_image_param
,
99 tep
->program
.info
.num_images
);
100 prog_data
.base
.base
.nr_params
= param_count
;
101 prog_data
.base
.base
.nr_image_params
= tep
->program
.info
.num_images
;
103 brw_nir_setup_glsl_uniforms(nir
, &tep
->program
, &prog_data
.base
.base
,
104 compiler
->scalar_stage
[MESA_SHADER_TESS_EVAL
]);
107 if (unlikely(INTEL_DEBUG
& DEBUG_SHADER_TIME
))
108 st_index
= brw_get_shader_time_index(brw
, &tep
->program
, ST_TES
, true);
110 if (unlikely(brw
->perf_debug
)) {
111 start_busy
= brw
->batch
.last_bo
&& drm_intel_bo_busy(brw
->batch
.last_bo
);
112 start_time
= get_time();
115 struct brw_vue_map input_vue_map
;
116 brw_compute_tess_vue_map(&input_vue_map
, key
->inputs_read
,
117 key
->patch_inputs_read
);
119 void *mem_ctx
= ralloc_context(NULL
);
120 unsigned program_size
;
122 const unsigned *program
=
123 brw_compile_tes(compiler
, brw
, mem_ctx
, key
, &input_vue_map
, &prog_data
,
124 nir
, &tep
->program
, st_index
, &program_size
, &error_str
);
125 if (program
== NULL
) {
126 tep
->program
.sh
.data
->LinkStatus
= linking_failure
;
127 ralloc_strcat(&tep
->program
.sh
.data
->InfoLog
, error_str
);
129 _mesa_problem(NULL
, "Failed to compile tessellation evaluation shader: "
132 ralloc_free(mem_ctx
);
136 if (unlikely(brw
->perf_debug
)) {
137 if (tep
->compiled_once
) {
138 brw_tes_debug_recompile(brw
, &tep
->program
, key
);
140 if (start_busy
&& !drm_intel_bo_busy(brw
->batch
.last_bo
)) {
141 perf_debug("TES compile took %.03f ms and stalled the GPU\n",
142 (get_time() - start_time
) * 1000);
144 tep
->compiled_once
= true;
147 /* Scratch space is used for register spilling */
148 brw_alloc_stage_scratch(brw
, stage_state
,
149 prog_data
.base
.base
.total_scratch
,
150 devinfo
->max_tes_threads
);
152 brw_upload_cache(&brw
->cache
, BRW_CACHE_TES_PROG
,
154 program
, program_size
,
155 &prog_data
, sizeof(prog_data
),
156 &stage_state
->prog_offset
, &brw
->tes
.base
.prog_data
);
157 ralloc_free(mem_ctx
);
163 brw_tes_populate_key(struct brw_context
*brw
,
164 struct brw_tes_prog_key
*key
)
166 struct brw_program
*tcp
= (struct brw_program
*) brw
->tess_ctrl_program
;
167 struct brw_program
*tep
= (struct brw_program
*) brw
->tess_eval_program
;
168 struct gl_program
*prog
= &tep
->program
;
170 uint64_t per_vertex_slots
= prog
->info
.inputs_read
;
171 uint32_t per_patch_slots
= prog
->info
.patch_inputs_read
;
173 memset(key
, 0, sizeof(*key
));
175 key
->program_string_id
= tep
->id
;
177 /* The TCS may have additional outputs which aren't read by the
178 * TES (possibly for cross-thread communication). These need to
179 * be stored in the Patch URB Entry as well.
182 struct gl_program
*tcp_prog
= &tcp
->program
;
183 per_vertex_slots
|= tcp_prog
->info
.outputs_written
&
184 ~(VARYING_BIT_TESS_LEVEL_INNER
| VARYING_BIT_TESS_LEVEL_OUTER
);
185 per_patch_slots
|= tcp_prog
->info
.patch_outputs_written
;
188 key
->inputs_read
= per_vertex_slots
;
189 key
->patch_inputs_read
= per_patch_slots
;
192 brw_populate_sampler_prog_key_data(&brw
->ctx
, prog
, &key
->tex
);
196 brw_upload_tes_prog(struct brw_context
*brw
)
198 struct brw_stage_state
*stage_state
= &brw
->tes
.base
;
199 struct brw_tes_prog_key key
;
200 /* BRW_NEW_TESS_PROGRAMS */
201 struct brw_program
*tep
= (struct brw_program
*) brw
->tess_eval_program
;
203 if (!brw_state_dirty(brw
,
205 BRW_NEW_TESS_PROGRAMS
))
208 brw_tes_populate_key(brw
, &key
);
210 if (!brw_search_cache(&brw
->cache
, BRW_CACHE_TES_PROG
,
212 &stage_state
->prog_offset
,
213 &brw
->tes
.base
.prog_data
)) {
214 bool success
= brw_codegen_tes_prog(brw
, tep
, &key
);
222 brw_tes_precompile(struct gl_context
*ctx
,
223 struct gl_shader_program
*shader_prog
,
224 struct gl_program
*prog
)
226 struct brw_context
*brw
= brw_context(ctx
);
227 struct brw_tes_prog_key key
;
228 uint32_t old_prog_offset
= brw
->tes
.base
.prog_offset
;
229 struct brw_stage_prog_data
*old_prog_data
= brw
->tes
.base
.prog_data
;
232 struct brw_program
*btep
= brw_program(prog
);
234 memset(&key
, 0, sizeof(key
));
236 key
.program_string_id
= btep
->id
;
237 key
.inputs_read
= prog
->nir
->info
->inputs_read
;
238 key
.patch_inputs_read
= prog
->nir
->info
->patch_inputs_read
;
240 if (shader_prog
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]) {
241 struct gl_program
*tcp
=
242 shader_prog
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
;
243 key
.inputs_read
|= tcp
->nir
->info
->outputs_written
&
244 ~(VARYING_BIT_TESS_LEVEL_INNER
| VARYING_BIT_TESS_LEVEL_OUTER
);
245 key
.patch_inputs_read
|= tcp
->nir
->info
->patch_outputs_written
;
248 brw_setup_tex_for_precompile(brw
, &key
.tex
, prog
);
250 success
= brw_codegen_tes_prog(brw
, btep
, &key
);
252 brw
->tes
.base
.prog_offset
= old_prog_offset
;
253 brw
->tes
.base
.prog_data
= old_prog_data
;