2 * Copyright © 2012 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.
24 #include "main/core.h"
27 #include "ir_uniform.h"
29 /* These functions are put in a "private" namespace instead of being marked
30 * static so that the unit tests can access them. See
31 * http://code.google.com/p/googletest/wiki/AdvancedGuide#Testing_Private_Code
36 get_storage(gl_uniform_storage
*storage
, unsigned num_storage
,
39 for (unsigned int i
= 0; i
< num_storage
; i
++) {
40 if (strcmp(name
, storage
[i
].name
) == 0)
48 copy_constant_to_storage(union gl_constant_value
*storage
,
49 const ir_constant
*val
,
50 const enum glsl_base_type base_type
,
51 const unsigned int elements
,
52 unsigned int boolean_true
)
54 for (unsigned int i
= 0; i
< elements
; i
++) {
57 storage
[i
].u
= val
->value
.u
[i
];
60 case GLSL_TYPE_SAMPLER
:
61 storage
[i
].i
= val
->value
.i
[i
];
64 storage
[i
].f
= val
->value
.f
[i
];
66 case GLSL_TYPE_DOUBLE
:
67 /* XXX need to check on big-endian */
68 storage
[i
* 2].u
= *(uint32_t *)&val
->value
.d
[i
];
69 storage
[i
* 2 + 1].u
= *(((uint32_t *)&val
->value
.d
[i
]) + 1);
72 storage
[i
].b
= val
->value
.b
[i
] ? boolean_true
: 0;
75 case GLSL_TYPE_STRUCT
:
77 case GLSL_TYPE_ATOMIC_UINT
:
78 case GLSL_TYPE_INTERFACE
:
80 case GLSL_TYPE_SUBROUTINE
:
81 case GLSL_TYPE_FUNCTION
:
83 /* All other types should have already been filtered by other
84 * paths in the caller.
86 assert(!"Should not get here.");
93 * Initialize an opaque uniform from the value of an explicit binding
94 * qualifier specified in the shader. Atomic counters are different because
95 * they have no storage and should be handled elsewhere.
98 set_opaque_binding(void *mem_ctx
, gl_shader_program
*prog
,
99 const glsl_type
*type
, const char *name
, int *binding
)
102 if (type
->is_array() && type
->fields
.array
->is_array()) {
103 const glsl_type
*const element_type
= type
->fields
.array
;
105 for (unsigned int i
= 0; i
< type
->length
; i
++) {
106 const char *element_name
= ralloc_asprintf(mem_ctx
, "%s[%d]", name
, i
);
108 set_opaque_binding(mem_ctx
, prog
, element_type
,
109 element_name
, binding
);
112 struct gl_uniform_storage
*const storage
=
113 get_storage(prog
->UniformStorage
, prog
->NumUniformStorage
, name
);
115 if (storage
== NULL
) {
116 assert(storage
!= NULL
);
120 const unsigned elements
= MAX2(storage
->array_elements
, 1);
122 /* Section 4.4.4 (Opaque-Uniform Layout Qualifiers) of the GLSL 4.20 spec
125 * "If the binding identifier is used with an array, the first element
126 * of the array takes the specified unit and each subsequent element
127 * takes the next consecutive unit."
129 for (unsigned int i
= 0; i
< elements
; i
++) {
130 storage
->storage
[i
].i
= (*binding
)++;
133 for (int sh
= 0; sh
< MESA_SHADER_STAGES
; sh
++) {
134 gl_linked_shader
*shader
= prog
->_LinkedShaders
[sh
];
137 if (storage
->type
->base_type
== GLSL_TYPE_SAMPLER
&&
138 storage
->opaque
[sh
].active
) {
139 for (unsigned i
= 0; i
< elements
; i
++) {
140 const unsigned index
= storage
->opaque
[sh
].index
+ i
;
141 shader
->SamplerUnits
[index
] = storage
->storage
[i
].i
;
144 } else if (storage
->type
->base_type
== GLSL_TYPE_IMAGE
&&
145 storage
->opaque
[sh
].active
) {
146 for (unsigned i
= 0; i
< elements
; i
++) {
147 const unsigned index
= storage
->opaque
[sh
].index
+ i
;
148 if (index
>= ARRAY_SIZE(shader
->ImageUnits
))
150 shader
->ImageUnits
[index
] = storage
->storage
[i
].i
;
159 set_block_binding(gl_shader_program
*prog
, const char *block_name
,
160 unsigned mode
, int binding
)
162 unsigned num_blocks
= mode
== ir_var_uniform
? prog
->NumUniformBlocks
:
163 prog
->NumShaderStorageBlocks
;
164 struct gl_uniform_block
*blks
= mode
== ir_var_uniform
?
165 prog
->UniformBlocks
: prog
->ShaderStorageBlocks
;
167 for (unsigned i
= 0; i
< num_blocks
; i
++) {
168 if (!strcmp(blks
[i
].Name
, block_name
)) {
169 blks
[i
].Binding
= binding
;
174 unreachable("Failed to initialize block binding");
178 set_uniform_initializer(void *mem_ctx
, gl_shader_program
*prog
,
179 const char *name
, const glsl_type
*type
,
180 ir_constant
*val
, unsigned int boolean_true
)
182 const glsl_type
*t_without_array
= type
->without_array();
183 if (type
->is_record()) {
184 ir_constant
*field_constant
;
186 field_constant
= (ir_constant
*)val
->components
.get_head();
188 for (unsigned int i
= 0; i
< type
->length
; i
++) {
189 const glsl_type
*field_type
= type
->fields
.structure
[i
].type
;
190 const char *field_name
= ralloc_asprintf(mem_ctx
, "%s.%s", name
,
191 type
->fields
.structure
[i
].name
);
192 set_uniform_initializer(mem_ctx
, prog
, field_name
,
193 field_type
, field_constant
, boolean_true
);
194 field_constant
= (ir_constant
*)field_constant
->next
;
197 } else if (t_without_array
->is_record() ||
198 (type
->is_array() && type
->fields
.array
->is_array())) {
199 const glsl_type
*const element_type
= type
->fields
.array
;
201 for (unsigned int i
= 0; i
< type
->length
; i
++) {
202 const char *element_name
= ralloc_asprintf(mem_ctx
, "%s[%d]", name
, i
);
204 set_uniform_initializer(mem_ctx
, prog
, element_name
,
205 element_type
, val
->array_elements
[i
],
211 struct gl_uniform_storage
*const storage
=
212 get_storage(prog
->UniformStorage
,
213 prog
->NumUniformStorage
,
215 if (storage
== NULL
) {
216 assert(storage
!= NULL
);
220 if (val
->type
->is_array()) {
221 const enum glsl_base_type base_type
=
222 val
->array_elements
[0]->type
->base_type
;
223 const unsigned int elements
= val
->array_elements
[0]->type
->components();
224 unsigned int idx
= 0;
225 unsigned dmul
= glsl_base_type_is_64bit(base_type
) ? 2 : 1;
227 assert(val
->type
->length
>= storage
->array_elements
);
228 for (unsigned int i
= 0; i
< storage
->array_elements
; i
++) {
229 copy_constant_to_storage(& storage
->storage
[idx
],
230 val
->array_elements
[i
],
235 idx
+= elements
* dmul
;
238 copy_constant_to_storage(storage
->storage
,
240 val
->type
->base_type
,
241 val
->type
->components(),
244 if (storage
->type
->is_sampler()) {
245 for (int sh
= 0; sh
< MESA_SHADER_STAGES
; sh
++) {
246 gl_linked_shader
*shader
= prog
->_LinkedShaders
[sh
];
248 if (shader
&& storage
->opaque
[sh
].active
) {
249 unsigned index
= storage
->opaque
[sh
].index
;
251 shader
->SamplerUnits
[index
] = storage
->storage
[0].i
;
260 link_set_uniform_initializers(struct gl_shader_program
*prog
,
261 unsigned int boolean_true
)
263 void *mem_ctx
= NULL
;
265 for (unsigned int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
266 struct gl_linked_shader
*shader
= prog
->_LinkedShaders
[i
];
271 foreach_in_list(ir_instruction
, node
, shader
->ir
) {
272 ir_variable
*const var
= node
->as_variable();
274 if (!var
|| (var
->data
.mode
!= ir_var_uniform
&&
275 var
->data
.mode
!= ir_var_shader_storage
))
279 mem_ctx
= ralloc_context(NULL
);
281 if (var
->data
.explicit_binding
) {
282 const glsl_type
*const type
= var
->type
;
284 if (type
->without_array()->is_sampler() ||
285 type
->without_array()->is_image()) {
286 int binding
= var
->data
.binding
;
287 linker::set_opaque_binding(mem_ctx
, prog
, var
->type
,
288 var
->name
, &binding
);
289 } else if (var
->is_in_buffer_block()) {
290 const glsl_type
*const iface_type
= var
->get_interface_type();
292 /* If the variable is an array and it is an interface instance,
293 * we need to set the binding for each array element. Just
294 * checking that the variable is an array is not sufficient.
295 * The variable could be an array element of a uniform block
296 * that lacks an instance name. For example:
302 * In this case "f" would pass is_in_buffer_block (above) and
303 * type->is_array(), but it will fail is_interface_instance().
305 if (var
->is_interface_instance() && var
->type
->is_array()) {
306 for (unsigned i
= 0; i
< var
->type
->length
; i
++) {
308 ralloc_asprintf(mem_ctx
, "%s[%u]", iface_type
->name
, i
);
310 /* Section 4.4.3 (Uniform Block Layout Qualifiers) of the
311 * GLSL 4.20 spec says:
313 * "If the binding identifier is used with a uniform
314 * block instanced as an array then the first element
315 * of the array takes the specified block binding and
316 * each subsequent element takes the next consecutive
317 * uniform block binding point."
319 linker::set_block_binding(prog
, name
, var
->data
.mode
,
320 var
->data
.binding
+ i
);
323 linker::set_block_binding(prog
, iface_type
->name
,
327 } else if (type
->contains_atomic()) {
328 /* we don't actually need to do anything. */
330 assert(!"Explicit binding not on a sampler, UBO or atomic.");
332 } else if (var
->constant_initializer
) {
333 linker::set_uniform_initializer(mem_ctx
, prog
, var
->name
,
334 var
->type
, var
->constant_initializer
,
340 ralloc_free(mem_ctx
);