2 * Copyright 2018 Collabora Ltd.
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5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
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9 * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
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20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
24 #include "zink_compiler.h"
25 #include "zink_screen.h"
26 #include "nir_to_spirv/nir_to_spirv.h"
28 #include "pipe/p_state.h"
31 #include "compiler/nir/nir_builder.h"
33 #include "nir/tgsi_to_nir.h"
34 #include "tgsi/tgsi_dump.h"
35 #include "tgsi/tgsi_from_mesa.h"
37 #include "util/u_memory.h"
40 lower_discard_if_instr(nir_intrinsic_instr
*instr
, nir_builder
*b
)
42 if (instr
->intrinsic
== nir_intrinsic_discard_if
) {
43 b
->cursor
= nir_before_instr(&instr
->instr
);
45 nir_if
*if_stmt
= nir_push_if(b
, nir_ssa_for_src(b
, instr
->src
[0], 1));
46 nir_intrinsic_instr
*discard
=
47 nir_intrinsic_instr_create(b
->shader
, nir_intrinsic_discard
);
48 nir_builder_instr_insert(b
, &discard
->instr
);
49 nir_pop_if(b
, if_stmt
);
50 nir_instr_remove(&instr
->instr
);
53 assert(instr
->intrinsic
!= nir_intrinsic_discard
||
54 nir_block_last_instr(instr
->instr
.block
) == &instr
->instr
);
60 lower_discard_if(nir_shader
*shader
)
62 bool progress
= false;
64 nir_foreach_function(function
, shader
) {
67 nir_builder_init(&builder
, function
->impl
);
68 nir_foreach_block(block
, function
->impl
) {
69 nir_foreach_instr_safe(instr
, block
) {
70 if (instr
->type
== nir_instr_type_intrinsic
)
71 progress
|= lower_discard_if_instr(
72 nir_instr_as_intrinsic(instr
),
77 nir_metadata_preserve(function
->impl
, nir_metadata_dominance
);
84 static const struct nir_shader_compiler_options nir_options
= {
85 .lower_all_io_to_temps
= true,
94 zink_get_compiler_options(struct pipe_screen
*screen
,
95 enum pipe_shader_ir ir
,
96 enum pipe_shader_type shader
)
98 assert(ir
== PIPE_SHADER_IR_NIR
);
103 zink_tgsi_to_nir(struct pipe_screen
*screen
, const struct tgsi_token
*tokens
)
105 if (zink_debug
& ZINK_DEBUG_TGSI
) {
106 fprintf(stderr
, "TGSI shader:\n---8<---\n");
107 tgsi_dump_to_file(tokens
, 0, stderr
);
108 fprintf(stderr
, "---8<---\n\n");
111 return tgsi_to_nir(tokens
, screen
, false);
115 optimize_nir(struct nir_shader
*s
)
120 NIR_PASS_V(s
, nir_lower_vars_to_ssa
);
121 NIR_PASS(progress
, s
, nir_copy_prop
);
122 NIR_PASS(progress
, s
, nir_opt_remove_phis
);
123 NIR_PASS(progress
, s
, nir_opt_dce
);
124 NIR_PASS(progress
, s
, nir_opt_dead_cf
);
125 NIR_PASS(progress
, s
, nir_opt_cse
);
126 NIR_PASS(progress
, s
, nir_opt_peephole_select
, 8, true, true);
127 NIR_PASS(progress
, s
, nir_opt_algebraic
);
128 NIR_PASS(progress
, s
, nir_opt_constant_folding
);
129 NIR_PASS(progress
, s
, nir_opt_undef
);
130 NIR_PASS(progress
, s
, zink_nir_lower_b2b
);
135 zink_compile_nir(struct zink_screen
*screen
, struct nir_shader
*nir
)
137 struct zink_shader
*ret
= CALLOC_STRUCT(zink_shader
);
139 NIR_PASS_V(nir
, nir_lower_uniforms_to_ubo
, 1);
140 NIR_PASS_V(nir
, nir_lower_clip_halfz
);
141 NIR_PASS_V(nir
, nir_lower_regs_to_ssa
);
143 NIR_PASS_V(nir
, nir_remove_dead_variables
, nir_var_function_temp
);
144 NIR_PASS_V(nir
, lower_discard_if
);
145 NIR_PASS_V(nir
, nir_convert_from_ssa
, true);
147 if (zink_debug
& ZINK_DEBUG_NIR
) {
148 fprintf(stderr
, "NIR shader:\n---8<---\n");
149 nir_print_shader(nir
, stderr
);
150 fprintf(stderr
, "---8<---\n");
153 ret
->num_bindings
= 0;
154 nir_foreach_variable(var
, &nir
->uniforms
) {
155 if (var
->data
.mode
== nir_var_mem_ubo
) {
156 int binding
= zink_binding(nir
->info
.stage
,
157 VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER
,
159 ret
->bindings
[ret
->num_bindings
].index
= var
->data
.binding
;
160 ret
->bindings
[ret
->num_bindings
].binding
= binding
;
161 ret
->bindings
[ret
->num_bindings
].type
= VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER
;
164 assert(var
->data
.mode
== nir_var_uniform
);
165 if (glsl_type_is_array(var
->type
) &&
166 glsl_type_is_sampler(glsl_get_array_element(var
->type
))) {
167 for (int i
= 0; i
< glsl_get_length(var
->type
); ++i
) {
168 int binding
= zink_binding(nir
->info
.stage
,
169 VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER
,
170 var
->data
.binding
+ i
);
171 ret
->bindings
[ret
->num_bindings
].index
= var
->data
.binding
+ i
;
172 ret
->bindings
[ret
->num_bindings
].binding
= binding
;
173 ret
->bindings
[ret
->num_bindings
].type
= VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER
;
176 } else if (glsl_type_is_sampler(var
->type
)) {
177 int binding
= zink_binding(nir
->info
.stage
,
178 VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER
,
180 ret
->bindings
[ret
->num_bindings
].index
= var
->data
.binding
;
181 ret
->bindings
[ret
->num_bindings
].binding
= binding
;
182 ret
->bindings
[ret
->num_bindings
].type
= VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER
;
188 ret
->info
= nir
->info
;
190 struct spirv_shader
*spirv
= nir_to_spirv(nir
);
193 if (zink_debug
& ZINK_DEBUG_SPIRV
) {
196 snprintf(buf
, sizeof(buf
), "dump%02d.spv", i
++);
197 FILE *fp
= fopen(buf
, "wb");
198 fwrite(spirv
->words
, sizeof(uint32_t), spirv
->num_words
, fp
);
200 fprintf(stderr
, "wrote '%s'...\n", buf
);
203 VkShaderModuleCreateInfo smci
= {};
204 smci
.sType
= VK_STRUCTURE_TYPE_SHADER_MODULE_CREATE_INFO
;
205 smci
.codeSize
= spirv
->num_words
* sizeof(uint32_t);
206 smci
.pCode
= spirv
->words
;
208 if (vkCreateShaderModule(screen
->dev
, &smci
, NULL
, &ret
->shader_module
) != VK_SUCCESS
)
215 zink_shader_free(struct zink_screen
*screen
, struct zink_shader
*shader
)
217 vkDestroyShaderModule(screen
->dev
, shader
->shader_module
, NULL
);