1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
|
/*
* Copyright © 2015 Intel Corporation
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#include "brw_shader.h"
#include "brw_nir.h"
#include "compiler/glsl/ir_uniform.h"
static void
brw_nir_setup_glsl_builtin_uniform(nir_variable *var,
const struct gl_program *prog,
struct brw_stage_prog_data *stage_prog_data,
bool is_scalar)
{
const nir_state_slot *const slots = var->state_slots;
assert(var->state_slots != NULL);
unsigned uniform_index = var->data.driver_location / 4;
for (unsigned int i = 0; i < var->num_state_slots; i++) {
/* This state reference has already been setup by ir_to_mesa, but we'll
* get the same index back here.
*/
int index = _mesa_add_state_reference(prog->Parameters,
(gl_state_index *)slots[i].tokens);
/* Add each of the unique swizzles of the element as a parameter.
* This'll end up matching the expected layout of the
* array/matrix/structure we're trying to fill in.
*/
int last_swiz = -1;
for (unsigned j = 0; j < 4; j++) {
int swiz = GET_SWZ(slots[i].swizzle, j);
/* If we hit a pair of identical swizzles, this means we've hit the
* end of the builtin variable. In scalar mode, we should just quit
* and move on to the next one. In vec4, we need to continue and pad
* it out to 4 components.
*/
if (swiz == last_swiz && is_scalar)
break;
last_swiz = swiz;
stage_prog_data->param[uniform_index++] =
&prog->Parameters->ParameterValues[index][swiz];
}
}
}
static void
brw_nir_setup_glsl_uniform(gl_shader_stage stage, nir_variable *var,
struct gl_shader_program *shader_prog,
struct brw_stage_prog_data *stage_prog_data,
bool is_scalar)
{
int namelen = strlen(var->name);
/* The data for our (non-builtin) uniforms is stored in a series of
* gl_uniform_driver_storage structs for each subcomponent that
* glGetUniformLocation() could name. We know it's been set up in the same
* order we'd walk the type, so walk the list of storage and find anything
* with our name, or the prefix of a component that starts with our name.
*/
unsigned uniform_index = var->data.driver_location / 4;
for (unsigned u = 0; u < shader_prog->NumUniformStorage; u++) {
struct gl_uniform_storage *storage = &shader_prog->UniformStorage[u];
if (storage->builtin)
continue;
if (strncmp(var->name, storage->name, namelen) != 0 ||
(storage->name[namelen] != 0 &&
storage->name[namelen] != '.' &&
storage->name[namelen] != '[')) {
continue;
}
if (storage->type->is_image()) {
brw_setup_image_uniform_values(stage, stage_prog_data,
uniform_index, storage);
uniform_index +=
BRW_IMAGE_PARAM_SIZE * MAX2(storage->array_elements, 1);
} else {
gl_constant_value *components = storage->storage;
unsigned vector_count = (MAX2(storage->array_elements, 1) *
storage->type->matrix_columns);
unsigned vector_size = storage->type->vector_elements;
for (unsigned s = 0; s < vector_count; s++) {
unsigned i;
for (i = 0; i < vector_size; i++) {
stage_prog_data->param[uniform_index++] = components++;
}
if (!is_scalar) {
/* Pad out with zeros if needed (only needed for vec4) */
for (; i < 4; i++) {
static const gl_constant_value zero = { 0.0 };
stage_prog_data->param[uniform_index++] = &zero;
}
}
}
}
}
}
void
brw_nir_setup_glsl_uniforms(nir_shader *shader,
struct gl_shader_program *shader_prog,
const struct gl_program *prog,
struct brw_stage_prog_data *stage_prog_data,
bool is_scalar)
{
nir_foreach_variable(var, &shader->uniforms) {
/* UBO's, atomics and samplers don't take up space in the
uniform file */
if (var->interface_type != NULL || var->type->contains_atomic())
continue;
if (strncmp(var->name, "gl_", 3) == 0) {
brw_nir_setup_glsl_builtin_uniform(var, prog, stage_prog_data,
is_scalar);
} else {
brw_nir_setup_glsl_uniform(shader->stage, var, shader_prog,
stage_prog_data, is_scalar);
}
}
}
void
brw_nir_setup_arb_uniforms(nir_shader *shader, struct gl_program *prog,
struct brw_stage_prog_data *stage_prog_data)
{
struct gl_program_parameter_list *plist = prog->Parameters;
#ifndef NDEBUG
if (!shader->uniforms.is_empty()) {
/* For ARB programs, only a single "parameters" variable is generated to
* support uniform data.
*/
assert(shader->uniforms.length() == 1);
nir_variable *var = (nir_variable *) shader->uniforms.get_head();
assert(strcmp(var->name, "parameters") == 0);
assert(var->type->array_size() == (int)plist->NumParameters);
}
#endif
for (unsigned p = 0; p < plist->NumParameters; p++) {
/* Parameters should be either vec4 uniforms or single component
* constants; matrices and other larger types should have been broken
* down earlier.
*/
assert(plist->Parameters[p].Size <= 4);
unsigned i;
for (i = 0; i < plist->Parameters[p].Size; i++) {
stage_prog_data->param[4 * p + i] = &plist->ParameterValues[p][i];
}
for (; i < 4; i++) {
static const gl_constant_value zero = { 0.0 };
stage_prog_data->param[4 * p + i] = &zero;
}
}
}
|
