2 * Copyright © 2013 Intel Corporation
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the next
12 * paragraph) shall be included in all copies or substantial portions of the
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,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
27 * State atom for client-programmable geometry shaders, and support code.
31 #include "brw_context.h"
32 #include "brw_vec4_gs_visitor.h"
33 #include "brw_state.h"
34 #include "brw_ff_gs.h"
38 assign_gs_binding_table_offsets(const struct brw_device_info
*devinfo
,
39 const struct gl_shader_program
*shader_prog
,
40 const struct gl_program
*prog
,
41 struct brw_gs_prog_data
*prog_data
)
43 /* In gen6 we reserve the first BRW_MAX_SOL_BINDINGS entries for transform
46 uint32_t reserved
= devinfo
->gen
== 6 ? BRW_MAX_SOL_BINDINGS
: 0;
48 brw_assign_common_binding_table_offsets(MESA_SHADER_GEOMETRY
, devinfo
,
50 &prog_data
->base
.base
,
55 brw_codegen_gs_prog(struct brw_context
*brw
,
56 struct gl_shader_program
*prog
,
57 struct brw_geometry_program
*gp
,
58 struct brw_gs_prog_key
*key
)
60 struct brw_compiler
*compiler
= brw
->intelScreen
->compiler
;
61 struct gl_shader
*shader
= prog
->_LinkedShaders
[MESA_SHADER_GEOMETRY
];
62 struct brw_stage_state
*stage_state
= &brw
->gs
.base
;
63 struct brw_gs_prog_data prog_data
;
64 memset(&prog_data
, 0, sizeof(prog_data
));
66 assign_gs_binding_table_offsets(brw
->intelScreen
->devinfo
, prog
,
67 &gp
->program
.Base
, &prog_data
);
69 /* Allocate the references to the uniforms that will end up in the
70 * prog_data associated with the compiled program, and which will be freed
73 * Note: param_count needs to be num_uniform_components * 4, since we add
74 * padding around uniform values below vec4 size, so the worst case is that
75 * every uniform is a float which gets padded to the size of a vec4.
77 struct gl_shader
*gs
= prog
->_LinkedShaders
[MESA_SHADER_GEOMETRY
];
78 int param_count
= gp
->program
.Base
.nir
->num_uniforms
* 4;
80 prog_data
.base
.base
.param
=
81 rzalloc_array(NULL
, const gl_constant_value
*, param_count
);
82 prog_data
.base
.base
.pull_param
=
83 rzalloc_array(NULL
, const gl_constant_value
*, param_count
);
84 prog_data
.base
.base
.image_param
=
85 rzalloc_array(NULL
, struct brw_image_param
, gs
->NumImages
);
86 prog_data
.base
.base
.nr_params
= param_count
;
87 prog_data
.base
.base
.nr_image_params
= gs
->NumImages
;
89 brw_nir_setup_glsl_uniforms(gp
->program
.Base
.nir
, prog
, &gp
->program
.Base
,
90 &prog_data
.base
.base
, compiler
->scalar_gs
);
92 GLbitfield64 outputs_written
= gp
->program
.Base
.OutputsWritten
;
94 brw_compute_vue_map(brw
->intelScreen
->devinfo
,
95 &prog_data
.base
.vue_map
, outputs_written
,
96 prog
? prog
->SeparateShader
: false);
98 if (unlikely(INTEL_DEBUG
& DEBUG_GS
))
99 brw_dump_ir("geometry", prog
, gs
, NULL
);
102 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
103 st_index
= brw_get_shader_time_index(brw
, prog
, NULL
, ST_GS
);
105 void *mem_ctx
= ralloc_context(NULL
);
106 unsigned program_size
;
108 const unsigned *program
=
109 brw_compile_gs(brw
->intelScreen
->compiler
, brw
, mem_ctx
, key
,
110 &prog_data
, shader
->Program
->nir
, prog
,
111 st_index
, &program_size
, &error_str
);
112 if (program
== NULL
) {
113 ralloc_free(mem_ctx
);
117 /* Scratch space is used for register spilling */
118 if (prog_data
.base
.base
.total_scratch
) {
119 brw_get_scratch_bo(brw
, &stage_state
->scratch_bo
,
120 prog_data
.base
.base
.total_scratch
*
121 brw
->max_gs_threads
);
124 brw_upload_cache(&brw
->cache
, BRW_CACHE_GS_PROG
,
126 program
, program_size
,
127 &prog_data
, sizeof(prog_data
),
128 &stage_state
->prog_offset
, &brw
->gs
.prog_data
);
129 ralloc_free(mem_ctx
);
135 brw_gs_state_dirty(struct brw_context
*brw
)
137 return brw_state_dirty(brw
,
139 BRW_NEW_GEOMETRY_PROGRAM
|
140 BRW_NEW_TRANSFORM_FEEDBACK
);
144 brw_gs_populate_key(struct brw_context
*brw
,
145 struct brw_gs_prog_key
*key
)
147 struct gl_context
*ctx
= &brw
->ctx
;
148 struct brw_stage_state
*stage_state
= &brw
->gs
.base
;
149 struct brw_geometry_program
*gp
=
150 (struct brw_geometry_program
*) brw
->geometry_program
;
151 struct gl_program
*prog
= &gp
->program
.Base
;
153 memset(key
, 0, sizeof(*key
));
155 key
->program_string_id
= gp
->id
;
158 brw_populate_sampler_prog_key_data(ctx
, prog
, stage_state
->sampler_count
,
163 brw_upload_gs_prog(struct brw_context
*brw
)
165 struct gl_context
*ctx
= &brw
->ctx
;
166 struct gl_shader_program
**current
= ctx
->_Shader
->CurrentProgram
;
167 struct brw_stage_state
*stage_state
= &brw
->gs
.base
;
168 struct brw_gs_prog_key key
;
169 /* BRW_NEW_GEOMETRY_PROGRAM */
170 struct brw_geometry_program
*gp
=
171 (struct brw_geometry_program
*) brw
->geometry_program
;
173 if (!brw_gs_state_dirty(brw
))
177 /* No geometry shader. Vertex data just passes straight through. */
179 (brw
->ctx
.NewDriverState
& BRW_NEW_TRANSFORM_FEEDBACK
)) {
180 gen6_brw_upload_ff_gs_prog(brw
);
184 /* Other state atoms had better not try to access prog_data, since
185 * there's no GS program.
187 brw
->gs
.prog_data
= NULL
;
188 brw
->gs
.base
.prog_data
= NULL
;
193 brw_gs_populate_key(brw
, &key
);
195 if (!brw_search_cache(&brw
->cache
, BRW_CACHE_GS_PROG
,
197 &stage_state
->prog_offset
, &brw
->gs
.prog_data
)) {
198 bool success
= brw_codegen_gs_prog(brw
, current
[MESA_SHADER_GEOMETRY
],
203 brw
->gs
.base
.prog_data
= &brw
->gs
.prog_data
->base
.base
;
207 brw_gs_precompile(struct gl_context
*ctx
,
208 struct gl_shader_program
*shader_prog
,
209 struct gl_program
*prog
)
211 struct brw_context
*brw
= brw_context(ctx
);
212 struct brw_gs_prog_key key
;
213 uint32_t old_prog_offset
= brw
->gs
.base
.prog_offset
;
214 struct brw_gs_prog_data
*old_prog_data
= brw
->gs
.prog_data
;
217 struct gl_geometry_program
*gp
= (struct gl_geometry_program
*) prog
;
218 struct brw_geometry_program
*bgp
= brw_geometry_program(gp
);
220 memset(&key
, 0, sizeof(key
));
222 brw_setup_tex_for_precompile(brw
, &key
.tex
, prog
);
223 key
.program_string_id
= bgp
->id
;
225 success
= brw_codegen_gs_prog(brw
, shader_prog
, bgp
, &key
);
227 brw
->gs
.base
.prog_offset
= old_prog_offset
;
228 brw
->gs
.prog_data
= old_prog_data
;