2 * Copyright © 2011 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
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19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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21 * DEALINGS IN THE SOFTWARE.
25 * \file shader_query.cpp
26 * C-to-C++ bridge functions to query GLSL shader data
28 * \author Ian Romanick <ian.d.romanick@intel.com>
31 #include "main/core.h"
32 #include "glsl_symbol_table.h"
34 #include "shaderobj.h"
35 #include "program/hash_table.h"
36 #include "../glsl/program.h"
38 #include "main/enums.h"
41 #include "shaderapi.h"
45 program_resource_location(struct gl_shader_program
*shProg
,
46 struct gl_program_resource
*res
, const char *name
);
49 * Declare convenience functions to return resource data in a given type.
50 * Warning! this is not type safe so be *very* careful when using these.
52 #define DECL_RESOURCE_FUNC(name, type) \
53 const type * RESOURCE_ ## name (gl_program_resource *res) { \
55 return (type *) res->Data; \
58 DECL_RESOURCE_FUNC(VAR
, ir_variable
);
59 DECL_RESOURCE_FUNC(UBO
, gl_uniform_block
);
60 DECL_RESOURCE_FUNC(UNI
, gl_uniform_storage
);
61 DECL_RESOURCE_FUNC(ATC
, gl_active_atomic_buffer
);
62 DECL_RESOURCE_FUNC(XFB
, gl_transform_feedback_varying_info
);
65 _mesa_BindAttribLocation(GLhandleARB program
, GLuint index
,
66 const GLcharARB
*name
)
68 GET_CURRENT_CONTEXT(ctx
);
70 struct gl_shader_program
*const shProg
=
71 _mesa_lookup_shader_program_err(ctx
, program
, "glBindAttribLocation");
78 if (strncmp(name
, "gl_", 3) == 0) {
79 _mesa_error(ctx
, GL_INVALID_OPERATION
,
80 "glBindAttribLocation(illegal name)");
84 if (index
>= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
) {
85 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindAttribLocation(index)");
89 /* Replace the current value if it's already in the list. Add
90 * VERT_ATTRIB_GENERIC0 because that's how the linker differentiates
91 * between built-in attributes and user-defined attributes.
93 shProg
->AttributeBindings
->put(index
+ VERT_ATTRIB_GENERIC0
, name
);
96 * Note that this attribute binding won't go into effect until
97 * glLinkProgram is called again.
102 is_active_attrib(const ir_variable
*var
)
107 switch (var
->data
.mode
) {
108 case ir_var_shader_in
:
109 return var
->data
.location
!= -1;
111 case ir_var_system_value
:
112 /* From GL 4.3 core spec, section 11.1.1 (Vertex Attributes):
113 * "For GetActiveAttrib, all active vertex shader input variables
114 * are enumerated, including the special built-in inputs gl_VertexID
115 * and gl_InstanceID."
117 return var
->data
.location
== SYSTEM_VALUE_VERTEX_ID
||
118 var
->data
.location
== SYSTEM_VALUE_VERTEX_ID_ZERO_BASE
||
119 var
->data
.location
== SYSTEM_VALUE_INSTANCE_ID
;
127 _mesa_GetActiveAttrib(GLhandleARB program
, GLuint desired_index
,
128 GLsizei maxLength
, GLsizei
* length
, GLint
* size
,
129 GLenum
* type
, GLcharARB
* name
)
131 GET_CURRENT_CONTEXT(ctx
);
132 struct gl_shader_program
*shProg
;
135 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetActiveAttrib(maxLength < 0)");
139 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetActiveAttrib");
143 if (!shProg
->LinkStatus
) {
144 _mesa_error(ctx
, GL_INVALID_VALUE
,
145 "glGetActiveAttrib(program not linked)");
149 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
] == NULL
) {
150 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetActiveAttrib(no vertex shader)");
154 struct gl_program_resource
*res
=
155 _mesa_program_resource_find_index(shProg
, GL_PROGRAM_INPUT
,
158 /* User asked for index that does not exist. */
160 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetActiveAttrib(index)");
164 const ir_variable
*const var
= RESOURCE_VAR(res
);
166 if (!is_active_attrib(var
))
169 const char *var_name
= var
->name
;
171 /* Since gl_VertexID may be lowered to gl_VertexIDMESA, we need to
172 * consider gl_VertexIDMESA as gl_VertexID for purposes of checking
175 if (var
->data
.mode
== ir_var_system_value
&&
176 var
->data
.location
== SYSTEM_VALUE_VERTEX_ID_ZERO_BASE
) {
177 var_name
= "gl_VertexID";
180 _mesa_copy_string(name
, maxLength
, length
, var_name
);
183 _mesa_program_resource_prop(shProg
, res
, desired_index
, GL_ARRAY_SIZE
,
184 size
, "glGetActiveAttrib");
187 _mesa_program_resource_prop(shProg
, res
, desired_index
, GL_TYPE
,
188 (GLint
*) type
, "glGetActiveAttrib");
191 /* Locations associated with shader variables (array or non-array) can be
192 * queried using its base name or using the base name appended with the
193 * valid array index. For example, in case of below vertex shader, valid
194 * queries can be made to know the location of "xyz", "array", "array[0]",
195 * "array[1]", "array[2]" and "array[3]". In this example index reurned
196 * will be 0, 0, 0, 1, 2, 3 respectively.
199 * layout(location=0) in vec4 xyz;
200 * layout(location=1) in vec4[4] array;
204 * This requirement came up with the addition of ARB_program_interface_query
205 * to OpenGL 4.3 specification. See page 101 (page 122 of the PDF) for details.
207 * This utility function is used by:
208 * _mesa_GetAttribLocation
209 * _mesa_GetFragDataLocation
210 * _mesa_GetFragDataIndex
213 * if the 'name' string matches var->name.
214 * Returns 'matched index':
215 * if the 'name' string matches var->name appended with valid array index.
218 get_matching_index(const ir_variable
*const var
, const char *name
) {
220 const char *const paren
= strchr(name
, '[');
221 const unsigned len
= (paren
!= NULL
) ? paren
- name
: strlen(name
);
224 if (!var
->type
->is_array())
228 idx
= (unsigned) strtol(paren
+ 1, &endptr
, 10);
229 const unsigned idx_len
= endptr
!= (paren
+ 1) ? endptr
- paren
- 1 : 0;
231 /* Validate the sub string representing index in 'name' string */
232 if ((idx
> 0 && paren
[1] == '0') /* leading zeroes */
233 || (idx
== 0 && idx_len
> 1) /* all zeroes */
234 || paren
[1] == ' ' /* whitespace */
235 || endptr
[0] != ']' /* closing brace */
236 || endptr
[1] != '\0' /* null char */
237 || idx_len
== 0 /* missing index */
238 || idx
>= var
->type
->length
) /* exceeding array bound */
242 if (strncmp(var
->name
, name
, len
) == 0 && var
->name
[len
] == '\0')
249 _mesa_GetAttribLocation(GLhandleARB program
, const GLcharARB
* name
)
251 GET_CURRENT_CONTEXT(ctx
);
252 struct gl_shader_program
*const shProg
=
253 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttribLocation");
259 if (!shProg
->LinkStatus
) {
260 _mesa_error(ctx
, GL_INVALID_OPERATION
,
261 "glGetAttribLocation(program not linked)");
268 /* Not having a vertex shader is not an error.
270 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
] == NULL
)
273 struct gl_program_resource
*res
=
274 _mesa_program_resource_find_name(shProg
, GL_PROGRAM_INPUT
, name
);
279 GLint loc
= program_resource_location(shProg
, res
, name
);
281 /* The extra check against against 0 is made because of builtin-attribute
282 * locations that have offset applied. Function program_resource_location
283 * can return built-in attribute locations < 0 and glGetAttribLocation
284 * cannot be used on "conventional" attributes.
286 * From page 95 of the OpenGL 3.0 spec:
288 * "If name is not an active attribute, if name is a conventional
289 * attribute, or if an error occurs, -1 will be returned."
291 return (loc
>= 0) ? loc
: -1;
295 _mesa_count_active_attribs(struct gl_shader_program
*shProg
)
297 if (!shProg
->LinkStatus
298 || shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
] == NULL
) {
302 struct gl_program_resource
*res
= shProg
->ProgramResourceList
;
304 for (unsigned j
= 0; j
< shProg
->NumProgramResourceList
; j
++, res
++) {
305 if (res
->Type
== GL_PROGRAM_INPUT
&&
306 res
->StageReferences
& (1 << MESA_SHADER_VERTEX
) &&
307 is_active_attrib(RESOURCE_VAR(res
)))
315 _mesa_longest_attribute_name_length(struct gl_shader_program
*shProg
)
317 if (!shProg
->LinkStatus
318 || shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
] == NULL
) {
322 struct gl_program_resource
*res
= shProg
->ProgramResourceList
;
324 for (unsigned j
= 0; j
< shProg
->NumProgramResourceList
; j
++, res
++) {
325 if (res
->Type
== GL_PROGRAM_INPUT
&&
326 res
->StageReferences
& (1 << MESA_SHADER_VERTEX
)) {
328 const size_t length
= strlen(RESOURCE_VAR(res
)->name
);
329 if (length
>= longest
)
330 longest
= length
+ 1;
338 _mesa_BindFragDataLocation(GLuint program
, GLuint colorNumber
,
341 _mesa_BindFragDataLocationIndexed(program
, colorNumber
, 0, name
);
345 _mesa_BindFragDataLocationIndexed(GLuint program
, GLuint colorNumber
,
346 GLuint index
, const GLchar
*name
)
348 GET_CURRENT_CONTEXT(ctx
);
350 struct gl_shader_program
*const shProg
=
351 _mesa_lookup_shader_program_err(ctx
, program
, "glBindFragDataLocationIndexed");
358 if (strncmp(name
, "gl_", 3) == 0) {
359 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glBindFragDataLocationIndexed(illegal name)");
364 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindFragDataLocationIndexed(index)");
368 if (index
== 0 && colorNumber
>= ctx
->Const
.MaxDrawBuffers
) {
369 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindFragDataLocationIndexed(colorNumber)");
373 if (index
== 1 && colorNumber
>= ctx
->Const
.MaxDualSourceDrawBuffers
) {
374 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindFragDataLocationIndexed(colorNumber)");
378 /* Replace the current value if it's already in the list. Add
379 * FRAG_RESULT_DATA0 because that's how the linker differentiates
380 * between built-in attributes and user-defined attributes.
382 shProg
->FragDataBindings
->put(colorNumber
+ FRAG_RESULT_DATA0
, name
);
383 shProg
->FragDataIndexBindings
->put(index
, name
);
385 * Note that this binding won't go into effect until
386 * glLinkProgram is called again.
392 _mesa_GetFragDataIndex(GLuint program
, const GLchar
*name
)
394 GET_CURRENT_CONTEXT(ctx
);
395 struct gl_shader_program
*const shProg
=
396 _mesa_lookup_shader_program_err(ctx
, program
, "glGetFragDataIndex");
402 if (!shProg
->LinkStatus
) {
403 _mesa_error(ctx
, GL_INVALID_OPERATION
,
404 "glGetFragDataIndex(program not linked)");
411 if (strncmp(name
, "gl_", 3) == 0) {
412 _mesa_error(ctx
, GL_INVALID_OPERATION
,
413 "glGetFragDataIndex(illegal name)");
417 /* Not having a fragment shader is not an error.
419 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
] == NULL
)
422 return _mesa_program_resource_location_index(shProg
, GL_PROGRAM_OUTPUT
,
427 _mesa_GetFragDataLocation(GLuint program
, const GLchar
*name
)
429 GET_CURRENT_CONTEXT(ctx
);
430 struct gl_shader_program
*const shProg
=
431 _mesa_lookup_shader_program_err(ctx
, program
, "glGetFragDataLocation");
437 if (!shProg
->LinkStatus
) {
438 _mesa_error(ctx
, GL_INVALID_OPERATION
,
439 "glGetFragDataLocation(program not linked)");
446 if (strncmp(name
, "gl_", 3) == 0) {
447 _mesa_error(ctx
, GL_INVALID_OPERATION
,
448 "glGetFragDataLocation(illegal name)");
452 /* Not having a fragment shader is not an error.
454 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
] == NULL
)
457 struct gl_program_resource
*res
=
458 _mesa_program_resource_find_name(shProg
, GL_PROGRAM_OUTPUT
, name
);
463 GLint loc
= program_resource_location(shProg
, res
, name
);
465 /* The extra check against against 0 is made because of builtin-attribute
466 * locations that have offset applied. Function program_resource_location
467 * can return built-in attribute locations < 0 and glGetFragDataLocation
468 * cannot be used on "conventional" attributes.
470 * From page 95 of the OpenGL 3.0 spec:
472 * "If name is not an active attribute, if name is a conventional
473 * attribute, or if an error occurs, -1 will be returned."
475 return (loc
>= 0) ? loc
: -1;
479 _mesa_program_resource_name(struct gl_program_resource
*res
)
482 case GL_UNIFORM_BLOCK
:
483 return RESOURCE_UBO(res
)->Name
;
484 case GL_TRANSFORM_FEEDBACK_VARYING
:
485 return RESOURCE_XFB(res
)->Name
;
486 case GL_PROGRAM_INPUT
:
487 case GL_PROGRAM_OUTPUT
:
488 return RESOURCE_VAR(res
)->name
;
490 return RESOURCE_UNI(res
)->name
;
492 assert(!"support for resource type not implemented");
499 _mesa_program_resource_array_size(struct gl_program_resource
*res
)
502 case GL_TRANSFORM_FEEDBACK_VARYING
:
503 return RESOURCE_XFB(res
)->Size
> 1 ?
504 RESOURCE_XFB(res
)->Size
: 0;
505 case GL_PROGRAM_INPUT
:
506 case GL_PROGRAM_OUTPUT
:
507 return RESOURCE_VAR(res
)->data
.max_array_access
;
509 return RESOURCE_UNI(res
)->array_elements
;
510 case GL_ATOMIC_COUNTER_BUFFER
:
511 case GL_UNIFORM_BLOCK
:
514 assert(!"support for resource type not implemented");
520 array_index_of_resource(struct gl_program_resource
*res
,
526 case GL_PROGRAM_INPUT
:
527 case GL_PROGRAM_OUTPUT
:
528 return get_matching_index(RESOURCE_VAR(res
), name
);
530 assert(!"support for resource type not implemented");
535 /* Find a program resource with specific name in given interface.
537 struct gl_program_resource
*
538 _mesa_program_resource_find_name(struct gl_shader_program
*shProg
,
539 GLenum programInterface
, const char *name
)
541 struct gl_program_resource
*res
= shProg
->ProgramResourceList
;
542 for (unsigned i
= 0; i
< shProg
->NumProgramResourceList
; i
++, res
++) {
543 if (res
->Type
!= programInterface
)
546 /* Resource basename. */
547 const char *rname
= _mesa_program_resource_name(res
);
548 unsigned baselen
= strlen(rname
);
550 switch (programInterface
) {
551 case GL_TRANSFORM_FEEDBACK_VARYING
:
552 case GL_UNIFORM_BLOCK
:
554 if (strncmp(rname
, name
, baselen
) == 0) {
555 /* Basename match, check if array or struct. */
556 if (name
[baselen
] == '\0' ||
557 name
[baselen
] == '[' ||
558 name
[baselen
] == '.') {
563 case GL_PROGRAM_INPUT
:
564 case GL_PROGRAM_OUTPUT
:
565 if (array_index_of_resource(res
, name
) >= 0)
569 assert(!"not implemented for given interface");
576 calc_resource_index(struct gl_shader_program
*shProg
,
577 struct gl_program_resource
*res
)
581 for (i
= 0; i
< shProg
->NumProgramResourceList
; i
++) {
582 if (&shProg
->ProgramResourceList
[i
] == res
)
584 if (shProg
->ProgramResourceList
[i
].Type
== res
->Type
)
587 return GL_INVALID_INDEX
;
591 * Calculate index for the given resource.
594 _mesa_program_resource_index(struct gl_shader_program
*shProg
,
595 struct gl_program_resource
*res
)
598 return GL_INVALID_INDEX
;
601 case GL_UNIFORM_BLOCK
:
602 return RESOURCE_UBO(res
)- shProg
->UniformBlocks
;
603 case GL_ATOMIC_COUNTER_BUFFER
:
604 return RESOURCE_ATC(res
) - shProg
->AtomicBuffers
;
605 case GL_TRANSFORM_FEEDBACK_VARYING
:
607 return calc_resource_index(shProg
, res
);
611 /* Find a program resource with specific index in given interface.
613 struct gl_program_resource
*
614 _mesa_program_resource_find_index(struct gl_shader_program
*shProg
,
615 GLenum programInterface
, GLuint index
)
617 struct gl_program_resource
*res
= shProg
->ProgramResourceList
;
620 for (unsigned i
= 0; i
< shProg
->NumProgramResourceList
; i
++, res
++) {
621 if (res
->Type
!= programInterface
)
625 case GL_UNIFORM_BLOCK
:
626 case GL_ATOMIC_COUNTER_BUFFER
:
627 if (_mesa_program_resource_index(shProg
, res
) == index
)
630 case GL_TRANSFORM_FEEDBACK_VARYING
:
631 case GL_PROGRAM_INPUT
:
632 case GL_PROGRAM_OUTPUT
:
634 if (++idx
== (int) index
)
638 assert(!"not implemented for given interface");
644 /* Get full name of a program resource.
647 _mesa_get_program_resource_name(struct gl_shader_program
*shProg
,
648 GLenum programInterface
, GLuint index
,
649 GLsizei bufSize
, GLsizei
*length
,
650 GLchar
*name
, const char *caller
)
652 GET_CURRENT_CONTEXT(ctx
);
654 /* Find resource with given interface and index. */
655 struct gl_program_resource
*res
=
656 _mesa_program_resource_find_index(shProg
, programInterface
, index
);
658 /* The error INVALID_VALUE is generated if <index> is greater than
659 * or equal to the number of entries in the active resource list for
660 * <programInterface>.
663 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(index %u)", caller
, index
);
668 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(bufSize %d)", caller
, bufSize
);
675 length
= &localLength
;
677 _mesa_copy_string(name
, bufSize
, length
, _mesa_program_resource_name(res
));
679 /* Page 61 (page 73 of the PDF) in section 2.11 of the OpenGL ES 3.0
682 * "If the active uniform is an array, the uniform name returned in
683 * name will always be the name of the uniform array appended with
686 * The same text also appears in the OpenGL 4.2 spec. It does not,
687 * however, appear in any previous spec. Previous specifications are
688 * ambiguous in this regard. However, either name can later be passed
689 * to glGetUniformLocation (and related APIs), so there shouldn't be any
690 * harm in always appending "[0]" to uniform array names.
692 * Geometry shader stage has different naming convention where the 'normal'
693 * condition is an array, therefore for variables referenced in geometry
694 * stage we do not add '[0]'.
696 * Note, that TCS outputs and TES inputs should not have index appended
699 bool add_index
= !(((programInterface
== GL_PROGRAM_INPUT
) &&
700 res
->StageReferences
& (1 << MESA_SHADER_GEOMETRY
)));
702 if (add_index
&& _mesa_program_resource_array_size(res
)) {
705 /* The comparison is strange because *length does *NOT* include the
706 * terminating NUL, but maxLength does.
708 for (i
= 0; i
< 3 && (*length
+ i
+ 1) < bufSize
; i
++)
709 name
[*length
+ i
] = "[0]"[i
];
711 name
[*length
+ i
] = '\0';
718 program_resource_location(struct gl_shader_program
*shProg
,
719 struct gl_program_resource
*res
, const char *name
)
721 unsigned index
, offset
;
722 int array_index
= -1;
724 if (res
->Type
== GL_PROGRAM_INPUT
|| res
->Type
== GL_PROGRAM_OUTPUT
) {
725 array_index
= array_index_of_resource(res
, name
);
730 /* VERT_ATTRIB_GENERIC0 and FRAG_RESULT_DATA0 are decremented as these
731 * offsets are used internally to differentiate between built-in attributes
732 * and user-defined attributes.
735 case GL_PROGRAM_INPUT
:
736 return RESOURCE_VAR(res
)->data
.location
+ array_index
- VERT_ATTRIB_GENERIC0
;
737 case GL_PROGRAM_OUTPUT
:
738 return RESOURCE_VAR(res
)->data
.location
+ array_index
- FRAG_RESULT_DATA0
;
740 index
= _mesa_get_uniform_location(shProg
, name
, &offset
);
742 if (index
== GL_INVALID_INDEX
)
745 /* From the GL_ARB_uniform_buffer_object spec:
747 * "The value -1 will be returned if <name> does not correspond to an
748 * active uniform variable name in <program>, if <name> is associated
749 * with a named uniform block, or if <name> starts with the reserved
752 if (RESOURCE_UNI(res
)->block_index
!= -1 ||
753 RESOURCE_UNI(res
)->atomic_buffer_index
!= -1)
756 /* location in remap table + array element offset */
757 return RESOURCE_UNI(res
)->remap_location
+ offset
;
765 * Function implements following location queries:
766 * glGetAttribLocation
767 * glGetFragDataLocation
768 * glGetUniformLocation
771 _mesa_program_resource_location(struct gl_shader_program
*shProg
,
772 GLenum programInterface
, const char *name
)
774 struct gl_program_resource
*res
=
775 _mesa_program_resource_find_name(shProg
, programInterface
, name
);
777 /* Resource not found. */
781 return program_resource_location(shProg
, res
, name
);
785 * Function implements following index queries:
789 _mesa_program_resource_location_index(struct gl_shader_program
*shProg
,
790 GLenum programInterface
, const char *name
)
792 struct gl_program_resource
*res
=
793 _mesa_program_resource_find_name(shProg
, programInterface
, name
);
795 /* Non-existent variable or resource is not referenced by fragment stage. */
796 if (!res
|| !(res
->StageReferences
& (1 << MESA_SHADER_FRAGMENT
)))
799 return RESOURCE_VAR(res
)->data
.index
;
803 stage_from_enum(GLenum ref
)
806 case GL_REFERENCED_BY_VERTEX_SHADER
:
807 return MESA_SHADER_VERTEX
;
808 case GL_REFERENCED_BY_GEOMETRY_SHADER
:
809 return MESA_SHADER_GEOMETRY
;
810 case GL_REFERENCED_BY_FRAGMENT_SHADER
:
811 return MESA_SHADER_FRAGMENT
;
813 assert(!"shader stage not supported");
814 return MESA_SHADER_STAGES
;
819 * Check if resource is referenced by given 'referenced by' stage enum.
820 * ATC and UBO resources hold stage references of their own.
823 is_resource_referenced(struct gl_shader_program
*shProg
,
824 struct gl_program_resource
*res
,
825 GLuint index
, uint8_t stage
)
827 if (res
->Type
== GL_ATOMIC_COUNTER_BUFFER
)
828 return RESOURCE_ATC(res
)->StageReferences
[stage
];
830 if (res
->Type
== GL_UNIFORM_BLOCK
)
831 return shProg
->UniformBlockStageIndex
[stage
][index
] != -1;
833 return res
->StageReferences
& (1 << stage
);
837 get_buffer_property(struct gl_shader_program
*shProg
,
838 struct gl_program_resource
*res
, const GLenum prop
,
839 GLint
*val
, const char *caller
)
841 GET_CURRENT_CONTEXT(ctx
);
842 if (res
->Type
!= GL_UNIFORM_BLOCK
&&
843 res
->Type
!= GL_ATOMIC_COUNTER_BUFFER
)
844 goto invalid_operation
;
846 if (res
->Type
== GL_UNIFORM_BLOCK
) {
848 case GL_BUFFER_BINDING
:
849 *val
= RESOURCE_UBO(res
)->Binding
;
851 case GL_BUFFER_DATA_SIZE
:
852 *val
= RESOURCE_UBO(res
)->UniformBufferSize
;
854 case GL_NUM_ACTIVE_VARIABLES
:
856 for (unsigned i
= 0; i
< RESOURCE_UBO(res
)->NumUniforms
; i
++) {
857 const char *iname
= RESOURCE_UBO(res
)->Uniforms
[i
].IndexName
;
858 struct gl_program_resource
*uni
=
859 _mesa_program_resource_find_name(shProg
, GL_UNIFORM
, iname
);
865 case GL_ACTIVE_VARIABLES
:
866 for (unsigned i
= 0; i
< RESOURCE_UBO(res
)->NumUniforms
; i
++) {
867 const char *iname
= RESOURCE_UBO(res
)->Uniforms
[i
].IndexName
;
868 struct gl_program_resource
*uni
=
869 _mesa_program_resource_find_name(shProg
, GL_UNIFORM
, iname
);
873 _mesa_program_resource_index(shProg
, uni
);
875 return RESOURCE_UBO(res
)->NumUniforms
;
877 } else if (res
->Type
== GL_ATOMIC_COUNTER_BUFFER
) {
879 case GL_BUFFER_BINDING
:
880 *val
= RESOURCE_ATC(res
)->Binding
;
882 case GL_BUFFER_DATA_SIZE
:
883 *val
= RESOURCE_ATC(res
)->MinimumSize
;
885 case GL_NUM_ACTIVE_VARIABLES
:
886 *val
= RESOURCE_ATC(res
)->NumUniforms
;
888 case GL_ACTIVE_VARIABLES
:
889 for (unsigned i
= 0; i
< RESOURCE_ATC(res
)->NumUniforms
; i
++)
890 *val
++ = RESOURCE_ATC(res
)->Uniforms
[i
];
891 return RESOURCE_ATC(res
)->NumUniforms
;
894 assert(!"support for property type not implemented");
897 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(%s prop %s)", caller
,
898 _mesa_lookup_enum_by_nr(res
->Type
),
899 _mesa_lookup_enum_by_nr(prop
));
905 _mesa_program_resource_prop(struct gl_shader_program
*shProg
,
906 struct gl_program_resource
*res
, GLuint index
,
907 const GLenum prop
, GLint
*val
, const char *caller
)
909 GET_CURRENT_CONTEXT(ctx
);
911 #define VALIDATE_TYPE(type)\
912 if (res->Type != type)\
913 goto invalid_operation;
917 if (res
->Type
== GL_ATOMIC_COUNTER_BUFFER
)
918 goto invalid_operation
;
919 /* Base name +3 if array '[0]' + terminator. */
920 *val
= strlen(_mesa_program_resource_name(res
)) +
921 (_mesa_program_resource_array_size(res
) > 0 ? 3 : 0) + 1;
926 *val
= RESOURCE_UNI(res
)->type
->gl_type
;
928 case GL_PROGRAM_INPUT
:
929 case GL_PROGRAM_OUTPUT
:
930 *val
= RESOURCE_VAR(res
)->type
->gl_type
;
932 case GL_TRANSFORM_FEEDBACK_VARYING
:
933 *val
= RESOURCE_XFB(res
)->Type
;
936 goto invalid_operation
;
941 *val
= MAX2(RESOURCE_UNI(res
)->array_elements
, 1);
943 case GL_PROGRAM_INPUT
:
944 case GL_PROGRAM_OUTPUT
:
945 *val
= MAX2(RESOURCE_VAR(res
)->type
->length
, 1);
947 case GL_TRANSFORM_FEEDBACK_VARYING
:
948 *val
= MAX2(RESOURCE_XFB(res
)->Size
, 1);
951 goto invalid_operation
;
954 VALIDATE_TYPE(GL_UNIFORM
);
955 *val
= RESOURCE_UNI(res
)->offset
;
958 VALIDATE_TYPE(GL_UNIFORM
);
959 *val
= RESOURCE_UNI(res
)->block_index
;
961 case GL_ARRAY_STRIDE
:
962 VALIDATE_TYPE(GL_UNIFORM
);
963 *val
= RESOURCE_UNI(res
)->array_stride
;
965 case GL_MATRIX_STRIDE
:
966 VALIDATE_TYPE(GL_UNIFORM
);
967 *val
= RESOURCE_UNI(res
)->matrix_stride
;
969 case GL_IS_ROW_MAJOR
:
970 VALIDATE_TYPE(GL_UNIFORM
);
971 *val
= RESOURCE_UNI(res
)->row_major
;
973 case GL_ATOMIC_COUNTER_BUFFER_INDEX
:
974 VALIDATE_TYPE(GL_UNIFORM
);
975 *val
= RESOURCE_UNI(res
)->atomic_buffer_index
;
977 case GL_BUFFER_BINDING
:
978 case GL_BUFFER_DATA_SIZE
:
979 case GL_NUM_ACTIVE_VARIABLES
:
980 case GL_ACTIVE_VARIABLES
:
981 return get_buffer_property(shProg
, res
, prop
, val
, caller
);
982 case GL_REFERENCED_BY_VERTEX_SHADER
:
983 case GL_REFERENCED_BY_GEOMETRY_SHADER
:
984 case GL_REFERENCED_BY_FRAGMENT_SHADER
:
987 case GL_PROGRAM_INPUT
:
988 case GL_PROGRAM_OUTPUT
:
989 case GL_UNIFORM_BLOCK
:
990 case GL_ATOMIC_COUNTER_BUFFER
:
991 *val
= is_resource_referenced(shProg
, res
, index
,
992 stage_from_enum(prop
));
995 goto invalid_operation
;
1000 case GL_PROGRAM_INPUT
:
1001 case GL_PROGRAM_OUTPUT
:
1002 *val
= program_resource_location(shProg
, res
,
1003 _mesa_program_resource_name(res
));
1006 goto invalid_operation
;
1008 case GL_LOCATION_INDEX
:
1009 if (res
->Type
!= GL_PROGRAM_OUTPUT
)
1010 goto invalid_operation
;
1011 *val
= RESOURCE_VAR(res
)->data
.index
;
1014 /* GL_ARB_tessellation_shader */
1015 case GL_IS_PER_PATCH
:
1016 case GL_REFERENCED_BY_TESS_CONTROL_SHADER
:
1017 case GL_REFERENCED_BY_TESS_EVALUATION_SHADER
:
1018 /* GL_ARB_compute_shader */
1019 case GL_REFERENCED_BY_COMPUTE_SHADER
:
1021 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(%s prop %s)", caller
,
1022 _mesa_lookup_enum_by_nr(res
->Type
),
1023 _mesa_lookup_enum_by_nr(prop
));
1027 #undef VALIDATE_TYPE
1030 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(%s prop %s)", caller
,
1031 _mesa_lookup_enum_by_nr(res
->Type
),
1032 _mesa_lookup_enum_by_nr(prop
));
1037 _mesa_get_program_resourceiv(struct gl_shader_program
*shProg
,
1038 GLenum programInterface
, GLuint index
, GLsizei propCount
,
1039 const GLenum
*props
, GLsizei bufSize
,
1040 GLsizei
*length
, GLint
*params
)
1042 GET_CURRENT_CONTEXT(ctx
);
1043 GLint
*val
= (GLint
*) params
;
1044 const GLenum
*prop
= props
;
1047 struct gl_program_resource
*res
=
1048 _mesa_program_resource_find_index(shProg
, programInterface
, index
);
1050 /* No such resource found or bufSize negative. */
1051 if (!res
|| bufSize
< 0) {
1052 _mesa_error(ctx
, GL_INVALID_VALUE
,
1053 "glGetProgramResourceiv(%s index %d bufSize %d)",
1054 _mesa_lookup_enum_by_nr(programInterface
), index
, bufSize
);
1058 /* Write propCount values until error occurs or bufSize reached. */
1059 for (int i
= 0; i
< propCount
&& i
< bufSize
; i
++, val
++, prop
++) {
1061 _mesa_program_resource_prop(shProg
, res
, index
, *prop
, val
,
1062 "glGetProgramResourceiv");
1064 /* Error happened. */
1065 if (props_written
== 0)
1068 amount
+= props_written
;
1071 /* If <length> is not NULL, the actual number of integer values
1072 * written to <params> will be written to <length>.