2 * Mesa 3-D graphics library
4 * Copyright © 2013 Gregory Hainaut <gregory.hainaut@gmail.com>
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
28 * \author Hainaut Gregory <gregory.hainaut@gmail.com>
30 * Implementation of pipeline object related API functions. Based on
31 * GL_ARB_separate_shader_objects extension.
35 #include "main/glheader.h"
36 #include "main/context.h"
37 #include "main/dispatch.h"
38 #include "main/enums.h"
39 #include "main/hash.h"
40 #include "main/mtypes.h"
41 #include "main/pipelineobj.h"
42 #include "main/shaderapi.h"
43 #include "main/shaderobj.h"
44 #include "main/transformfeedback.h"
45 #include "main/uniforms.h"
46 #include "compiler/glsl/glsl_parser_extras.h"
47 #include "compiler/glsl/ir_uniform.h"
48 #include "program/program.h"
49 #include "program/prog_parameter.h"
50 #include "util/ralloc.h"
53 * Delete a pipeline object.
56 _mesa_delete_pipeline_object(struct gl_context
*ctx
,
57 struct gl_pipeline_object
*obj
)
61 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
62 _mesa_reference_program(ctx
, &obj
->CurrentProgram
[i
], NULL
);
63 _mesa_reference_shader_program(ctx
, &obj
->ReferencedPrograms
[i
], NULL
);
66 _mesa_reference_shader_program(ctx
, &obj
->ActiveProgram
, NULL
);
72 * Allocate and initialize a new pipeline object.
74 static struct gl_pipeline_object
*
75 _mesa_new_pipeline_object(struct gl_context
*ctx
, GLuint name
)
77 struct gl_pipeline_object
*obj
= rzalloc(NULL
, struct gl_pipeline_object
);
81 obj
->Flags
= _mesa_get_shader_flags();
89 * Initialize pipeline object state for given context.
92 _mesa_init_pipeline(struct gl_context
*ctx
)
94 ctx
->Pipeline
.Objects
= _mesa_NewHashTable();
96 ctx
->Pipeline
.Current
= NULL
;
98 /* Install a default Pipeline */
99 ctx
->Pipeline
.Default
= _mesa_new_pipeline_object(ctx
, 0);
100 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
105 * Callback for deleting a pipeline object. Called by _mesa_HashDeleteAll().
108 delete_pipelineobj_cb(UNUSED GLuint id
, void *data
, void *userData
)
110 struct gl_pipeline_object
*obj
= (struct gl_pipeline_object
*) data
;
111 struct gl_context
*ctx
= (struct gl_context
*) userData
;
112 _mesa_delete_pipeline_object(ctx
, obj
);
117 * Free pipeline state for given context.
120 _mesa_free_pipeline_data(struct gl_context
*ctx
)
122 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
124 _mesa_HashDeleteAll(ctx
->Pipeline
.Objects
, delete_pipelineobj_cb
, ctx
);
125 _mesa_DeleteHashTable(ctx
->Pipeline
.Objects
);
127 _mesa_delete_pipeline_object(ctx
, ctx
->Pipeline
.Default
);
131 * Look up the pipeline object for the given ID.
134 * Either a pointer to the pipeline object with the specified ID or \c NULL for
135 * a non-existent ID. The spec defines ID 0 as being technically
138 struct gl_pipeline_object
*
139 _mesa_lookup_pipeline_object(struct gl_context
*ctx
, GLuint id
)
144 return (struct gl_pipeline_object
*)
145 _mesa_HashLookupLocked(ctx
->Pipeline
.Objects
, id
);
149 * Add the given pipeline object to the pipeline object pool.
152 save_pipeline_object(struct gl_context
*ctx
, struct gl_pipeline_object
*obj
)
155 _mesa_HashInsertLocked(ctx
->Pipeline
.Objects
, obj
->Name
, obj
);
160 * Remove the given pipeline object from the pipeline object pool.
161 * Do not deallocate the pipeline object though.
164 remove_pipeline_object(struct gl_context
*ctx
, struct gl_pipeline_object
*obj
)
167 _mesa_HashRemoveLocked(ctx
->Pipeline
.Objects
, obj
->Name
);
172 * Set ptr to obj w/ reference counting.
173 * Note: this should only be called from the _mesa_reference_pipeline_object()
177 _mesa_reference_pipeline_object_(struct gl_context
*ctx
,
178 struct gl_pipeline_object
**ptr
,
179 struct gl_pipeline_object
*obj
)
184 /* Unreference the old pipeline object */
185 struct gl_pipeline_object
*oldObj
= *ptr
;
187 assert(oldObj
->RefCount
> 0);
190 if (oldObj
->RefCount
== 0) {
191 _mesa_delete_pipeline_object(ctx
, oldObj
);
199 /* reference new pipeline object */
200 assert(obj
->RefCount
> 0);
208 use_program_stage(struct gl_context
*ctx
, GLenum type
,
209 struct gl_shader_program
*shProg
,
210 struct gl_pipeline_object
*pipe
) {
211 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
212 struct gl_program
*prog
= NULL
;
213 if (shProg
&& shProg
->_LinkedShaders
[stage
])
214 prog
= shProg
->_LinkedShaders
[stage
]->Program
;
216 _mesa_use_program(ctx
, stage
, shProg
, prog
, pipe
);
220 use_program_stages(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
221 GLbitfield stages
, struct gl_pipeline_object
*pipe
) {
223 /* Enable individual stages from the program as requested by the
224 * application. If there is no shader for a requested stage in the
225 * program, _mesa_use_shader_program will enable fixed-function processing
226 * as dictated by the spec.
228 * Section 2.11.4 (Program Pipeline Objects) of the OpenGL 4.1 spec
231 * "If UseProgramStages is called with program set to zero or with a
232 * program object that contains no executable code for the given
233 * stages, it is as if the pipeline object has no programmable stage
234 * configured for the indicated shader stages."
236 if ((stages
& GL_VERTEX_SHADER_BIT
) != 0)
237 use_program_stage(ctx
, GL_VERTEX_SHADER
, shProg
, pipe
);
239 if ((stages
& GL_FRAGMENT_SHADER_BIT
) != 0)
240 use_program_stage(ctx
, GL_FRAGMENT_SHADER
, shProg
, pipe
);
242 if ((stages
& GL_GEOMETRY_SHADER_BIT
) != 0)
243 use_program_stage(ctx
, GL_GEOMETRY_SHADER
, shProg
, pipe
);
245 if ((stages
& GL_TESS_CONTROL_SHADER_BIT
) != 0)
246 use_program_stage(ctx
, GL_TESS_CONTROL_SHADER
, shProg
, pipe
);
248 if ((stages
& GL_TESS_EVALUATION_SHADER_BIT
) != 0)
249 use_program_stage(ctx
, GL_TESS_EVALUATION_SHADER
, shProg
, pipe
);
251 if ((stages
& GL_COMPUTE_SHADER_BIT
) != 0)
252 use_program_stage(ctx
, GL_COMPUTE_SHADER
, shProg
, pipe
);
254 pipe
->Validated
= false;
258 _mesa_UseProgramStages_no_error(GLuint pipeline
, GLbitfield stages
,
261 GET_CURRENT_CONTEXT(ctx
);
263 struct gl_pipeline_object
*pipe
=
264 _mesa_lookup_pipeline_object(ctx
, pipeline
);
265 struct gl_shader_program
*shProg
= NULL
;
268 shProg
= _mesa_lookup_shader_program(ctx
, prog
);
270 /* Object is created by any Pipeline call but glGenProgramPipelines,
271 * glIsProgramPipeline and GetProgramPipelineInfoLog
273 pipe
->EverBound
= GL_TRUE
;
275 use_program_stages(ctx
, shProg
, stages
, pipe
);
279 * Bound program to severals stages of the pipeline
282 _mesa_UseProgramStages(GLuint pipeline
, GLbitfield stages
, GLuint program
)
284 GET_CURRENT_CONTEXT(ctx
);
286 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
287 struct gl_shader_program
*shProg
= NULL
;
288 GLbitfield any_valid_stages
;
290 if (MESA_VERBOSE
& VERBOSE_API
)
291 _mesa_debug(ctx
, "glUseProgramStages(%u, 0x%x, %u)\n",
292 pipeline
, stages
, program
);
295 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUseProgramStages(pipeline)");
299 /* Object is created by any Pipeline call but glGenProgramPipelines,
300 * glIsProgramPipeline and GetProgramPipelineInfoLog
302 pipe
->EverBound
= GL_TRUE
;
304 /* Section 2.11.4 (Program Pipeline Objects) of the OpenGL 4.1 spec says:
306 * "If stages is not the special value ALL_SHADER_BITS, and has a bit
307 * set that is not recognized, the error INVALID_VALUE is generated."
309 any_valid_stages
= GL_VERTEX_SHADER_BIT
| GL_FRAGMENT_SHADER_BIT
;
310 if (_mesa_has_geometry_shaders(ctx
))
311 any_valid_stages
|= GL_GEOMETRY_SHADER_BIT
;
312 if (_mesa_has_tessellation(ctx
))
313 any_valid_stages
|= GL_TESS_CONTROL_SHADER_BIT
|
314 GL_TESS_EVALUATION_SHADER_BIT
;
315 if (_mesa_has_compute_shaders(ctx
))
316 any_valid_stages
|= GL_COMPUTE_SHADER_BIT
;
318 if (stages
!= GL_ALL_SHADER_BITS
&& (stages
& ~any_valid_stages
) != 0) {
319 _mesa_error(ctx
, GL_INVALID_VALUE
, "glUseProgramStages(Stages)");
323 /* Section 2.17.2 (Transform Feedback Primitive Capture) of the OpenGL 4.1
326 * "The error INVALID_OPERATION is generated:
330 * - by UseProgramStages if the program pipeline object it refers
331 * to is current and the current transform feedback object is
332 * active and not paused;
334 if (ctx
->_Shader
== pipe
) {
335 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
336 _mesa_error(ctx
, GL_INVALID_OPERATION
,
337 "glUseProgramStages(transform feedback active)");
343 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
344 "glUseProgramStages");
348 /* Section 2.11.4 (Program Pipeline Objects) of the OpenGL 4.1 spec
351 * "If the program object named by program was linked without the
352 * PROGRAM_SEPARABLE parameter set, or was not linked successfully,
353 * the error INVALID_OPERATION is generated and the corresponding
354 * shader stages in the pipeline program pipeline object are not
357 if (!shProg
->data
->LinkStatus
) {
358 _mesa_error(ctx
, GL_INVALID_OPERATION
,
359 "glUseProgramStages(program not linked)");
363 if (!shProg
->SeparateShader
) {
364 _mesa_error(ctx
, GL_INVALID_OPERATION
,
365 "glUseProgramStages(program wasn't linked with the "
366 "PROGRAM_SEPARABLE flag)");
371 use_program_stages(ctx
, shProg
, stages
, pipe
);
375 _mesa_ActiveShaderProgram_no_error(GLuint pipeline
, GLuint program
)
377 GET_CURRENT_CONTEXT(ctx
);
378 struct gl_shader_program
*shProg
= NULL
;
379 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
382 shProg
= _mesa_lookup_shader_program(ctx
, program
);
384 /* Object is created by any Pipeline call but glGenProgramPipelines,
385 * glIsProgramPipeline and GetProgramPipelineInfoLog
387 pipe
->EverBound
= GL_TRUE
;
389 _mesa_reference_shader_program(ctx
, &pipe
->ActiveProgram
, shProg
);
393 * Use the named shader program for subsequent glUniform calls (if pipeline
397 _mesa_ActiveShaderProgram(GLuint pipeline
, GLuint program
)
399 GET_CURRENT_CONTEXT(ctx
);
400 struct gl_shader_program
*shProg
= NULL
;
401 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
403 if (MESA_VERBOSE
& VERBOSE_API
)
404 _mesa_debug(ctx
, "glActiveShaderProgram(%u, %u)\n", pipeline
, program
);
407 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
408 "glActiveShaderProgram(program)");
414 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glActiveShaderProgram(pipeline)");
418 /* Object is created by any Pipeline call but glGenProgramPipelines,
419 * glIsProgramPipeline and GetProgramPipelineInfoLog
421 pipe
->EverBound
= GL_TRUE
;
423 if ((shProg
!= NULL
) && !shProg
->data
->LinkStatus
) {
424 _mesa_error(ctx
, GL_INVALID_OPERATION
,
425 "glActiveShaderProgram(program %u not linked)", shProg
->Name
);
429 _mesa_reference_shader_program(ctx
, &pipe
->ActiveProgram
, shProg
);
433 _mesa_BindProgramPipeline_no_error(GLuint pipeline
)
435 GET_CURRENT_CONTEXT(ctx
);
436 struct gl_pipeline_object
*newObj
= NULL
;
438 /* Rebinding the same pipeline object: no change.
440 if (ctx
->_Shader
->Name
== pipeline
)
443 /* Get pointer to new pipeline object (newObj)
446 /* non-default pipeline object */
447 newObj
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
449 /* Object is created by any Pipeline call but glGenProgramPipelines,
450 * glIsProgramPipeline and GetProgramPipelineInfoLog
452 newObj
->EverBound
= GL_TRUE
;
455 _mesa_bind_pipeline(ctx
, newObj
);
459 * Make program of the pipeline current
462 _mesa_BindProgramPipeline(GLuint pipeline
)
464 GET_CURRENT_CONTEXT(ctx
);
465 struct gl_pipeline_object
*newObj
= NULL
;
467 if (MESA_VERBOSE
& VERBOSE_API
)
468 _mesa_debug(ctx
, "glBindProgramPipeline(%u)\n", pipeline
);
470 /* Rebinding the same pipeline object: no change.
472 if (ctx
->_Shader
->Name
== pipeline
)
475 /* Section 2.17.2 (Transform Feedback Primitive Capture) of the OpenGL 4.1
478 * "The error INVALID_OPERATION is generated:
482 * - by BindProgramPipeline if the current transform feedback
483 * object is active and not paused;
485 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
486 _mesa_error(ctx
, GL_INVALID_OPERATION
,
487 "glBindProgramPipeline(transform feedback active)");
491 /* Get pointer to new pipeline object (newObj)
494 /* non-default pipeline object */
495 newObj
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
497 _mesa_error(ctx
, GL_INVALID_OPERATION
,
498 "glBindProgramPipeline(non-gen name)");
502 /* Object is created by any Pipeline call but glGenProgramPipelines,
503 * glIsProgramPipeline and GetProgramPipelineInfoLog
505 newObj
->EverBound
= GL_TRUE
;
508 _mesa_bind_pipeline(ctx
, newObj
);
512 _mesa_bind_pipeline(struct gl_context
*ctx
,
513 struct gl_pipeline_object
*pipe
)
516 /* First bind the Pipeline to pipeline binding point */
517 _mesa_reference_pipeline_object(ctx
, &ctx
->Pipeline
.Current
, pipe
);
519 /* Section 2.11.3 (Program Objects) of the OpenGL 4.1 spec says:
521 * "If there is a current program object established by UseProgram,
522 * that program is considered current for all stages. Otherwise, if
523 * there is a bound program pipeline object (see section 2.11.4), the
524 * program bound to the appropriate stage of the pipeline object is
525 * considered current."
527 if (&ctx
->Shader
!= ctx
->_Shader
) {
528 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
531 /* Bound the pipeline to the current program and
532 * restore the pipeline state
534 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, pipe
);
536 /* Unbind the pipeline */
537 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
,
538 ctx
->Pipeline
.Default
);
541 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
542 struct gl_program
*prog
= ctx
->_Shader
->CurrentProgram
[i
];
544 _mesa_program_init_subroutine_defaults(ctx
, prog
);
551 * Delete a set of pipeline objects.
553 * \param n Number of pipeline objects to delete.
554 * \param ids pipeline of \c n pipeline object IDs.
557 _mesa_DeleteProgramPipelines(GLsizei n
, const GLuint
*pipelines
)
559 GET_CURRENT_CONTEXT(ctx
);
562 if (MESA_VERBOSE
& VERBOSE_API
)
563 _mesa_debug(ctx
, "glDeleteProgramPipelines(%d, %p)\n", n
, pipelines
);
566 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteProgramPipelines(n<0)");
570 for (i
= 0; i
< n
; i
++) {
571 struct gl_pipeline_object
*obj
=
572 _mesa_lookup_pipeline_object(ctx
, pipelines
[i
]);
575 assert(obj
->Name
== pipelines
[i
]);
577 /* If the pipeline object is currently bound, the spec says "If an
578 * object that is currently bound is deleted, the binding for that
579 * object reverts to zero and no program pipeline object becomes
582 if (obj
== ctx
->Pipeline
.Current
) {
583 _mesa_BindProgramPipeline(0);
586 /* The ID is immediately freed for re-use */
587 remove_pipeline_object(ctx
, obj
);
589 /* Unreference the pipeline object.
590 * If refcount hits zero, the object will be deleted.
592 _mesa_reference_pipeline_object(ctx
, &obj
, NULL
);
598 * Generate a set of unique pipeline object IDs and store them in \c pipelines.
599 * \param n Number of IDs to generate.
600 * \param pipelines pipeline of \c n locations to store the IDs.
603 create_program_pipelines(struct gl_context
*ctx
, GLsizei n
, GLuint
*pipelines
,
610 func
= dsa
? "glCreateProgramPipelines" : "glGenProgramPipelines";
613 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s (n < 0)", func
);
621 first
= _mesa_HashFindFreeKeyBlock(ctx
->Pipeline
.Objects
, n
);
623 for (i
= 0; i
< n
; i
++) {
624 struct gl_pipeline_object
*obj
;
625 GLuint name
= first
+ i
;
627 obj
= _mesa_new_pipeline_object(ctx
, name
);
629 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
634 /* make dsa-allocated objects behave like program objects */
635 obj
->EverBound
= GL_TRUE
;
638 save_pipeline_object(ctx
, obj
);
639 pipelines
[i
] = first
+ i
;
645 _mesa_GenProgramPipelines(GLsizei n
, GLuint
*pipelines
)
647 GET_CURRENT_CONTEXT(ctx
);
649 if (MESA_VERBOSE
& VERBOSE_API
)
650 _mesa_debug(ctx
, "glGenProgramPipelines(%d, %p)\n", n
, pipelines
);
652 create_program_pipelines(ctx
, n
, pipelines
, false);
656 _mesa_CreateProgramPipelines(GLsizei n
, GLuint
*pipelines
)
658 GET_CURRENT_CONTEXT(ctx
);
660 if (MESA_VERBOSE
& VERBOSE_API
)
661 _mesa_debug(ctx
, "glCreateProgramPipelines(%d, %p)\n", n
, pipelines
);
663 create_program_pipelines(ctx
, n
, pipelines
, true);
667 * Determine if ID is the name of an pipeline object.
669 * \param id ID of the potential pipeline object.
670 * \return \c GL_TRUE if \c id is the name of a pipeline object,
671 * \c GL_FALSE otherwise.
674 _mesa_IsProgramPipeline(GLuint pipeline
)
676 GET_CURRENT_CONTEXT(ctx
);
678 if (MESA_VERBOSE
& VERBOSE_API
)
679 _mesa_debug(ctx
, "glIsProgramPipeline(%u)\n", pipeline
);
681 struct gl_pipeline_object
*obj
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
685 return obj
->EverBound
;
689 * glGetProgramPipelineiv() - get pipeline shader state.
692 _mesa_GetProgramPipelineiv(GLuint pipeline
, GLenum pname
, GLint
*params
)
694 GET_CURRENT_CONTEXT(ctx
);
695 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
697 if (MESA_VERBOSE
& VERBOSE_API
)
698 _mesa_debug(ctx
, "glGetProgramPipelineiv(%u, %d, %p)\n",
699 pipeline
, pname
, params
);
701 /* Are geometry shaders available in this context?
703 const bool has_gs
= _mesa_has_geometry_shaders(ctx
);
704 const bool has_tess
= _mesa_has_tessellation(ctx
);
707 _mesa_error(ctx
, GL_INVALID_OPERATION
,
708 "glGetProgramPipelineiv(pipeline)");
712 /* Object is created by any Pipeline call but glGenProgramPipelines,
713 * glIsProgramPipeline and GetProgramPipelineInfoLog
715 pipe
->EverBound
= GL_TRUE
;
718 case GL_ACTIVE_PROGRAM
:
719 *params
= pipe
->ActiveProgram
? pipe
->ActiveProgram
->Name
: 0;
721 case GL_INFO_LOG_LENGTH
:
722 *params
= (pipe
->InfoLog
&& pipe
->InfoLog
[0] != '\0') ?
723 strlen(pipe
->InfoLog
) + 1 : 0;
725 case GL_VALIDATE_STATUS
:
726 *params
= pipe
->Validated
;
728 case GL_VERTEX_SHADER
:
729 *params
= pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]
730 ? pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]->Id
: 0;
732 case GL_TESS_EVALUATION_SHADER
:
735 *params
= pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
]
736 ? pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
]->Id
: 0;
738 case GL_TESS_CONTROL_SHADER
:
741 *params
= pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
]
742 ? pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
]->Id
: 0;
744 case GL_GEOMETRY_SHADER
:
747 *params
= pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
]
748 ? pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
]->Id
: 0;
750 case GL_FRAGMENT_SHADER
:
751 *params
= pipe
->CurrentProgram
[MESA_SHADER_FRAGMENT
]
752 ? pipe
->CurrentProgram
[MESA_SHADER_FRAGMENT
]->Id
: 0;
754 case GL_COMPUTE_SHADER
:
755 if (!_mesa_has_compute_shaders(ctx
))
757 *params
= pipe
->CurrentProgram
[MESA_SHADER_COMPUTE
]
758 ? pipe
->CurrentProgram
[MESA_SHADER_COMPUTE
]->Id
: 0;
764 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramPipelineiv(pname=%s)",
765 _mesa_enum_to_string(pname
));
769 * Determines whether every stage in a linked program is active in the
770 * specified pipeline.
773 program_stages_all_active(struct gl_pipeline_object
*pipe
,
774 const struct gl_program
*prog
)
781 unsigned mask
= prog
->sh
.data
->linked_stages
;
783 const int i
= u_bit_scan(&mask
);
784 if (pipe
->CurrentProgram
[i
]) {
785 if (prog
->Id
!= pipe
->CurrentProgram
[i
]->Id
) {
794 pipe
->InfoLog
= ralloc_asprintf(pipe
,
795 "Program %d is not active for all "
796 "shaders that was linked",
804 program_stages_interleaved_illegally(const struct gl_pipeline_object
*pipe
)
806 unsigned prev_linked_stages
= 0;
808 /* Look for programs bound to stages: A -> B -> A, with any intervening
809 * sequence of unrelated programs or empty stages.
811 for (unsigned i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
812 struct gl_program
*cur
= pipe
->CurrentProgram
[i
];
814 /* Empty stages anywhere in the pipe are OK. Also we can be confident
815 * that if the linked_stages mask matches we are looking at the same
816 * linked program because a previous validation call to
817 * program_stages_all_active() will have already failed if two different
818 * programs with the sames stages linked are not active for all linked
821 if (!cur
|| cur
->sh
.data
->linked_stages
== prev_linked_stages
)
824 if (prev_linked_stages
) {
825 /* We've seen an A -> B transition; look at the rest of the pipe
826 * to see if we ever see A again.
828 if (prev_linked_stages
>> (i
+ 1))
832 prev_linked_stages
= cur
->sh
.data
->linked_stages
;
839 _mesa_validate_program_pipeline(struct gl_context
* ctx
,
840 struct gl_pipeline_object
*pipe
)
843 bool program_empty
= true;
845 pipe
->Validated
= GL_FALSE
;
847 /* Release and reset the info log.
849 if (pipe
->InfoLog
!= NULL
)
850 ralloc_free(pipe
->InfoLog
);
852 pipe
->InfoLog
= NULL
;
854 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
855 * OpenGL 4.1 spec says:
857 * "[INVALID_OPERATION] is generated by any command that transfers
858 * vertices to the GL if:
860 * - A program object is active for at least one, but not all of
861 * the shader stages that were present when the program was
864 * For each possible program stage, verify that the program bound to that
865 * stage has all of its stages active. In other words, if the program
866 * bound to the vertex stage also has a fragment shader, the fragment
867 * shader must also be bound to the fragment stage.
869 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
870 if (!program_stages_all_active(pipe
, pipe
->CurrentProgram
[i
])) {
875 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
876 * OpenGL 4.1 spec says:
878 * "[INVALID_OPERATION] is generated by any command that transfers
879 * vertices to the GL if:
883 * - One program object is active for at least two shader stages
884 * and a second program is active for a shader stage between two
885 * stages for which the first program was active."
887 if (program_stages_interleaved_illegally(pipe
)) {
890 "Program is active for multiple shader stages with an "
891 "intervening stage provided by another program");
895 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
896 * OpenGL 4.1 spec says:
898 * "[INVALID_OPERATION] is generated by any command that transfers
899 * vertices to the GL if:
903 * - There is an active program for tessellation control,
904 * tessellation evaluation, or geometry stages with corresponding
905 * executable shader, but there is no active program with
906 * executable vertex shader."
908 if (!pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]
909 && (pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
] ||
910 pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
] ||
911 pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
])) {
912 pipe
->InfoLog
= ralloc_strdup(pipe
, "Program lacks a vertex shader");
916 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
917 * OpenGL 4.1 spec says:
919 * "[INVALID_OPERATION] is generated by any command that transfers
920 * vertices to the GL if:
924 * - There is no current program object specified by UseProgram,
925 * there is a current program pipeline object, and the current
926 * program for any shader stage has been relinked since being
927 * applied to the pipeline object via UseProgramStages with the
928 * PROGRAM_SEPARABLE parameter set to FALSE.
930 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
931 if (pipe
->CurrentProgram
[i
] &&
932 !pipe
->CurrentProgram
[i
]->info
.separate_shader
) {
933 pipe
->InfoLog
= ralloc_asprintf(pipe
,
934 "Program %d was relinked without "
935 "PROGRAM_SEPARABLE state",
936 pipe
->CurrentProgram
[i
]->Id
);
941 /* Section 11.1.3.11 (Validation) of the OpenGL 4.5 spec says:
943 * "An INVALID_OPERATION error is generated by any command that trans-
944 * fers vertices to the GL or launches compute work if the current set
945 * of active program objects cannot be executed, for reasons including:
949 * - There is no current program object specified by UseProgram,
950 * there is a current program pipeline object, and that object is
951 * empty (no executable code is installed for any stage).
953 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
954 if (pipe
->CurrentProgram
[i
]) {
955 program_empty
= false;
964 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
965 * OpenGL 4.1 spec says:
967 * "[INVALID_OPERATION] is generated by any command that transfers
968 * vertices to the GL if:
972 * - Any two active samplers in the current program object are of
973 * different types, but refer to the same texture image unit.
975 * - The number of active samplers in the program exceeds the
976 * maximum number of texture image units allowed."
978 if (!_mesa_sampler_uniforms_pipeline_are_valid(pipe
))
981 /* Validate inputs against outputs, this cannot be done during linking
982 * since programs have been linked separately from each other.
984 * Section 11.1.3.11 (Validation) of the OpenGL 4.5 Core Profile spec says:
986 * "Separable program objects may have validation failures that cannot be
987 * detected without the complete program pipeline. Mismatched interfaces,
988 * improper usage of program objects together, and the same
989 * state-dependent failures can result in validation errors for such
992 * OpenGL ES 3.1 specification has the same text.
994 * Section 11.1.3.11 (Validation) of the OpenGL ES spec also says:
996 * An INVALID_OPERATION error is generated by any command that transfers
997 * vertices to the GL or launches compute work if the current set of
998 * active program objects cannot be executed, for reasons including:
1000 * * The current program pipeline object contains a shader interface
1001 * that doesn't have an exact match (see section 7.4.1)
1003 * Based on this, only perform the most-strict checking on ES or when the
1004 * application has created a debug context.
1006 if ((_mesa_is_gles(ctx
) || (ctx
->Const
.ContextFlags
& GL_CONTEXT_FLAG_DEBUG_BIT
)) &&
1007 !_mesa_validate_pipeline_io(pipe
)) {
1008 if (_mesa_is_gles(ctx
))
1011 static GLuint msg_id
= 0;
1013 _mesa_gl_debug(ctx
, &msg_id
,
1014 MESA_DEBUG_SOURCE_API
,
1015 MESA_DEBUG_TYPE_PORTABILITY
,
1016 MESA_DEBUG_SEVERITY_MEDIUM
,
1017 "glValidateProgramPipeline: pipeline %u does not meet "
1018 "strict OpenGL ES 3.1 requirements and may not be "
1019 "portable across desktop hardware\n",
1023 pipe
->Validated
= GL_TRUE
;
1028 * Check compatibility of pipeline's program
1031 _mesa_ValidateProgramPipeline(GLuint pipeline
)
1033 GET_CURRENT_CONTEXT(ctx
);
1035 if (MESA_VERBOSE
& VERBOSE_API
)
1036 _mesa_debug(ctx
, "glValidateProgramPipeline(%u)\n", pipeline
);
1038 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
1041 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1042 "glValidateProgramPipeline(pipeline)");
1046 _mesa_validate_program_pipeline(ctx
, pipe
);
1050 _mesa_GetProgramPipelineInfoLog(GLuint pipeline
, GLsizei bufSize
,
1051 GLsizei
*length
, GLchar
*infoLog
)
1053 GET_CURRENT_CONTEXT(ctx
);
1055 if (MESA_VERBOSE
& VERBOSE_API
)
1056 _mesa_debug(ctx
, "glGetProgramPipelineInfoLog(%u, %d, %p, %p)\n",
1057 pipeline
, bufSize
, length
, infoLog
);
1059 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
1062 _mesa_error(ctx
, GL_INVALID_VALUE
,
1063 "glGetProgramPipelineInfoLog(pipeline)");
1068 _mesa_error(ctx
, GL_INVALID_VALUE
,
1069 "glGetProgramPipelineInfoLog(bufSize)");
1073 _mesa_copy_string(infoLog
, bufSize
, length
, pipe
->InfoLog
);