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 _mesa_reference_shader_program(ctx
, &obj
->_CurrentFragmentProgram
, NULL
);
63 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
64 _mesa_reference_shader_program(ctx
, &obj
->CurrentProgram
[i
], NULL
);
66 _mesa_reference_shader_program(ctx
, &obj
->ActiveProgram
, NULL
);
67 mtx_destroy(&obj
->Mutex
);
73 * Allocate and initialize a new pipeline object.
75 static struct gl_pipeline_object
*
76 _mesa_new_pipeline_object(struct gl_context
*ctx
, GLuint name
)
78 struct gl_pipeline_object
*obj
= rzalloc(NULL
, struct gl_pipeline_object
);
81 mtx_init(&obj
->Mutex
, mtx_plain
);
83 obj
->Flags
= _mesa_get_shader_flags();
91 * Initialize pipeline object state for given context.
94 _mesa_init_pipeline(struct gl_context
*ctx
)
96 ctx
->Pipeline
.Objects
= _mesa_NewHashTable();
98 ctx
->Pipeline
.Current
= NULL
;
100 /* Install a default Pipeline */
101 ctx
->Pipeline
.Default
= _mesa_new_pipeline_object(ctx
, 0);
102 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
107 * Callback for deleting a pipeline object. Called by _mesa_HashDeleteAll().
110 delete_pipelineobj_cb(GLuint id
, void *data
, void *userData
)
112 struct gl_pipeline_object
*obj
= (struct gl_pipeline_object
*) data
;
113 struct gl_context
*ctx
= (struct gl_context
*) userData
;
114 _mesa_delete_pipeline_object(ctx
, obj
);
119 * Free pipeline state for given context.
122 _mesa_free_pipeline_data(struct gl_context
*ctx
)
124 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
126 _mesa_HashDeleteAll(ctx
->Pipeline
.Objects
, delete_pipelineobj_cb
, ctx
);
127 _mesa_DeleteHashTable(ctx
->Pipeline
.Objects
);
129 _mesa_delete_pipeline_object(ctx
, ctx
->Pipeline
.Default
);
133 * Look up the pipeline object for the given ID.
136 * Either a pointer to the pipeline object with the specified ID or \c NULL for
137 * a non-existent ID. The spec defines ID 0 as being technically
140 struct gl_pipeline_object
*
141 _mesa_lookup_pipeline_object(struct gl_context
*ctx
, GLuint id
)
146 return (struct gl_pipeline_object
*)
147 _mesa_HashLookup(ctx
->Pipeline
.Objects
, id
);
151 * Add the given pipeline object to the pipeline object pool.
154 save_pipeline_object(struct gl_context
*ctx
, struct gl_pipeline_object
*obj
)
157 _mesa_HashInsert(ctx
->Pipeline
.Objects
, obj
->Name
, obj
);
162 * Remove the given pipeline object from the pipeline object pool.
163 * Do not deallocate the pipeline object though.
166 remove_pipeline_object(struct gl_context
*ctx
, struct gl_pipeline_object
*obj
)
169 _mesa_HashRemove(ctx
->Pipeline
.Objects
, obj
->Name
);
174 * Set ptr to obj w/ reference counting.
175 * Note: this should only be called from the _mesa_reference_pipeline_object()
179 _mesa_reference_pipeline_object_(struct gl_context
*ctx
,
180 struct gl_pipeline_object
**ptr
,
181 struct gl_pipeline_object
*obj
)
186 /* Unreference the old pipeline object */
187 GLboolean deleteFlag
= GL_FALSE
;
188 struct gl_pipeline_object
*oldObj
= *ptr
;
190 mtx_lock(&oldObj
->Mutex
);
191 assert(oldObj
->RefCount
> 0);
193 deleteFlag
= (oldObj
->RefCount
== 0);
194 mtx_unlock(&oldObj
->Mutex
);
197 _mesa_delete_pipeline_object(ctx
, oldObj
);
205 /* reference new pipeline object */
206 mtx_lock(&obj
->Mutex
);
207 if (obj
->RefCount
== 0) {
208 /* this pipeline's being deleted (look just above) */
209 /* Not sure this can ever really happen. Warn if it does. */
210 _mesa_problem(NULL
, "referencing deleted pipeline object");
217 mtx_unlock(&obj
->Mutex
);
222 * Bound program to severals stages of the pipeline
225 _mesa_UseProgramStages(GLuint pipeline
, GLbitfield stages
, GLuint program
)
227 GET_CURRENT_CONTEXT(ctx
);
229 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
230 struct gl_shader_program
*shProg
= NULL
;
231 GLbitfield any_valid_stages
;
233 if (MESA_VERBOSE
& VERBOSE_API
)
234 _mesa_debug(ctx
, "glUseProgramStages(%u, 0x%x, %u)\n",
235 pipeline
, stages
, program
);
238 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUseProgramStages(pipeline)");
242 /* Object is created by any Pipeline call but glGenProgramPipelines,
243 * glIsProgramPipeline and GetProgramPipelineInfoLog
245 pipe
->EverBound
= GL_TRUE
;
247 /* Section 2.11.4 (Program Pipeline Objects) of the OpenGL 4.1 spec says:
249 * "If stages is not the special value ALL_SHADER_BITS, and has a bit
250 * set that is not recognized, the error INVALID_VALUE is generated."
252 any_valid_stages
= GL_VERTEX_SHADER_BIT
| GL_FRAGMENT_SHADER_BIT
;
253 if (_mesa_has_geometry_shaders(ctx
))
254 any_valid_stages
|= GL_GEOMETRY_SHADER_BIT
;
255 if (_mesa_has_tessellation(ctx
))
256 any_valid_stages
|= GL_TESS_CONTROL_SHADER_BIT
|
257 GL_TESS_EVALUATION_SHADER_BIT
;
258 if (_mesa_has_compute_shaders(ctx
))
259 any_valid_stages
|= GL_COMPUTE_SHADER_BIT
;
261 if (stages
!= GL_ALL_SHADER_BITS
&& (stages
& ~any_valid_stages
) != 0) {
262 _mesa_error(ctx
, GL_INVALID_VALUE
, "glUseProgramStages(Stages)");
266 /* Section 2.17.2 (Transform Feedback Primitive Capture) of the OpenGL 4.1
269 * "The error INVALID_OPERATION is generated:
273 * - by UseProgramStages if the program pipeline object it refers
274 * to is current and the current transform feedback object is
275 * active and not paused;
277 if (ctx
->_Shader
== pipe
) {
278 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
279 _mesa_error(ctx
, GL_INVALID_OPERATION
,
280 "glUseProgramStages(transform feedback active)");
286 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
287 "glUseProgramStages");
291 /* Section 2.11.4 (Program Pipeline Objects) of the OpenGL 4.1 spec
294 * "If the program object named by program was linked without the
295 * PROGRAM_SEPARABLE parameter set, or was not linked successfully,
296 * the error INVALID_OPERATION is generated and the corresponding
297 * shader stages in the pipeline program pipeline object are not
300 if (!shProg
->LinkStatus
) {
301 _mesa_error(ctx
, GL_INVALID_OPERATION
,
302 "glUseProgramStages(program not linked)");
306 if (!shProg
->SeparateShader
) {
307 _mesa_error(ctx
, GL_INVALID_OPERATION
,
308 "glUseProgramStages(program wasn't linked with the "
309 "PROGRAM_SEPARABLE flag)");
314 /* Enable individual stages from the program as requested by the
315 * application. If there is no shader for a requested stage in the
316 * program, _mesa_use_shader_program will enable fixed-function processing
317 * as dictated by the spec.
319 * Section 2.11.4 (Program Pipeline Objects) of the OpenGL 4.1 spec
322 * "If UseProgramStages is called with program set to zero or with a
323 * program object that contains no executable code for the given
324 * stages, it is as if the pipeline object has no programmable stage
325 * configured for the indicated shader stages."
327 if ((stages
& GL_VERTEX_SHADER_BIT
) != 0)
328 _mesa_use_shader_program(ctx
, GL_VERTEX_SHADER
, shProg
, pipe
);
330 if ((stages
& GL_FRAGMENT_SHADER_BIT
) != 0)
331 _mesa_use_shader_program(ctx
, GL_FRAGMENT_SHADER
, shProg
, pipe
);
333 if ((stages
& GL_GEOMETRY_SHADER_BIT
) != 0)
334 _mesa_use_shader_program(ctx
, GL_GEOMETRY_SHADER
, shProg
, pipe
);
336 if ((stages
& GL_TESS_CONTROL_SHADER_BIT
) != 0)
337 _mesa_use_shader_program(ctx
, GL_TESS_CONTROL_SHADER
, shProg
, pipe
);
339 if ((stages
& GL_TESS_EVALUATION_SHADER_BIT
) != 0)
340 _mesa_use_shader_program(ctx
, GL_TESS_EVALUATION_SHADER
, shProg
, pipe
);
342 if ((stages
& GL_COMPUTE_SHADER_BIT
) != 0)
343 _mesa_use_shader_program(ctx
, GL_COMPUTE_SHADER
, shProg
, pipe
);
345 pipe
->Validated
= false;
349 * Use the named shader program for subsequent glUniform calls (if pipeline
353 _mesa_ActiveShaderProgram(GLuint pipeline
, GLuint program
)
355 GET_CURRENT_CONTEXT(ctx
);
356 struct gl_shader_program
*shProg
= NULL
;
357 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
359 if (MESA_VERBOSE
& VERBOSE_API
)
360 _mesa_debug(ctx
, "glActiveShaderProgram(%u, %u)\n", pipeline
, program
);
363 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
364 "glActiveShaderProgram(program)");
370 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glActiveShaderProgram(pipeline)");
374 /* Object is created by any Pipeline call but glGenProgramPipelines,
375 * glIsProgramPipeline and GetProgramPipelineInfoLog
377 pipe
->EverBound
= GL_TRUE
;
379 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
380 _mesa_error(ctx
, GL_INVALID_OPERATION
,
381 "glActiveShaderProgram(program %u not linked)", shProg
->Name
);
385 _mesa_reference_shader_program(ctx
, &pipe
->ActiveProgram
, shProg
);
389 * Make program of the pipeline current
392 _mesa_BindProgramPipeline(GLuint pipeline
)
394 GET_CURRENT_CONTEXT(ctx
);
395 struct gl_pipeline_object
*newObj
= NULL
;
397 if (MESA_VERBOSE
& VERBOSE_API
)
398 _mesa_debug(ctx
, "glBindProgramPipeline(%u)\n", pipeline
);
400 /* Rebinding the same pipeline object: no change.
402 if (ctx
->_Shader
->Name
== pipeline
)
405 /* Section 2.17.2 (Transform Feedback Primitive Capture) of the OpenGL 4.1
408 * "The error INVALID_OPERATION is generated:
412 * - by BindProgramPipeline if the current transform feedback
413 * object is active and not paused;
415 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
416 _mesa_error(ctx
, GL_INVALID_OPERATION
,
417 "glBindProgramPipeline(transform feedback active)");
421 /* Get pointer to new pipeline object (newObj)
424 /* non-default pipeline object */
425 newObj
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
427 _mesa_error(ctx
, GL_INVALID_OPERATION
,
428 "glBindProgramPipeline(non-gen name)");
432 /* Object is created by any Pipeline call but glGenProgramPipelines,
433 * glIsProgramPipeline and GetProgramPipelineInfoLog
435 newObj
->EverBound
= GL_TRUE
;
438 _mesa_bind_pipeline(ctx
, newObj
);
442 _mesa_bind_pipeline(struct gl_context
*ctx
,
443 struct gl_pipeline_object
*pipe
)
445 /* First bind the Pipeline to pipeline binding point */
446 _mesa_reference_pipeline_object(ctx
, &ctx
->Pipeline
.Current
, pipe
);
448 /* Section 2.11.3 (Program Objects) of the OpenGL 4.1 spec says:
450 * "If there is a current program object established by UseProgram,
451 * that program is considered current for all stages. Otherwise, if
452 * there is a bound program pipeline object (see section 2.11.4), the
453 * program bound to the appropriate stage of the pipeline object is
454 * considered current."
456 if (&ctx
->Shader
!= ctx
->_Shader
) {
458 /* Bound the pipeline to the current program and
459 * restore the pipeline state
461 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, pipe
);
463 /* Unbind the pipeline */
464 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
,
465 ctx
->Pipeline
.Default
);
468 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
470 if (ctx
->Driver
.UseProgram
)
471 ctx
->Driver
.UseProgram(ctx
, NULL
);
476 * Delete a set of pipeline objects.
478 * \param n Number of pipeline objects to delete.
479 * \param ids pipeline of \c n pipeline object IDs.
482 _mesa_DeleteProgramPipelines(GLsizei n
, const GLuint
*pipelines
)
484 GET_CURRENT_CONTEXT(ctx
);
487 if (MESA_VERBOSE
& VERBOSE_API
)
488 _mesa_debug(ctx
, "glDeleteProgramPipelines(%d, %p)\n", n
, pipelines
);
491 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteProgramPipelines(n<0)");
495 for (i
= 0; i
< n
; i
++) {
496 struct gl_pipeline_object
*obj
=
497 _mesa_lookup_pipeline_object(ctx
, pipelines
[i
]);
500 assert(obj
->Name
== pipelines
[i
]);
502 /* If the pipeline object is currently bound, the spec says "If an
503 * object that is currently bound is deleted, the binding for that
504 * object reverts to zero and no program pipeline object becomes
507 if (obj
== ctx
->Pipeline
.Current
) {
508 _mesa_BindProgramPipeline(0);
511 /* The ID is immediately freed for re-use */
512 remove_pipeline_object(ctx
, obj
);
514 /* Unreference the pipeline object.
515 * If refcount hits zero, the object will be deleted.
517 _mesa_reference_pipeline_object(ctx
, &obj
, NULL
);
523 * Generate a set of unique pipeline object IDs and store them in \c pipelines.
524 * \param n Number of IDs to generate.
525 * \param pipelines pipeline of \c n locations to store the IDs.
528 create_program_pipelines(struct gl_context
*ctx
, GLsizei n
, GLuint
*pipelines
,
535 func
= dsa
? "glCreateProgramPipelines" : "glGenProgramPipelines";
538 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s (n < 0)", func
);
546 first
= _mesa_HashFindFreeKeyBlock(ctx
->Pipeline
.Objects
, n
);
548 for (i
= 0; i
< n
; i
++) {
549 struct gl_pipeline_object
*obj
;
550 GLuint name
= first
+ i
;
552 obj
= _mesa_new_pipeline_object(ctx
, name
);
554 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
559 /* make dsa-allocated objects behave like program objects */
560 obj
->EverBound
= GL_TRUE
;
563 save_pipeline_object(ctx
, obj
);
564 pipelines
[i
] = first
+ i
;
570 _mesa_GenProgramPipelines(GLsizei n
, GLuint
*pipelines
)
572 GET_CURRENT_CONTEXT(ctx
);
574 if (MESA_VERBOSE
& VERBOSE_API
)
575 _mesa_debug(ctx
, "glGenProgramPipelines(%d, %p)\n", n
, pipelines
);
577 create_program_pipelines(ctx
, n
, pipelines
, false);
581 _mesa_CreateProgramPipelines(GLsizei n
, GLuint
*pipelines
)
583 GET_CURRENT_CONTEXT(ctx
);
585 if (MESA_VERBOSE
& VERBOSE_API
)
586 _mesa_debug(ctx
, "glCreateProgramPipelines(%d, %p)\n", n
, pipelines
);
588 create_program_pipelines(ctx
, n
, pipelines
, true);
592 * Determine if ID is the name of an pipeline object.
594 * \param id ID of the potential pipeline object.
595 * \return \c GL_TRUE if \c id is the name of a pipeline object,
596 * \c GL_FALSE otherwise.
599 _mesa_IsProgramPipeline(GLuint pipeline
)
601 GET_CURRENT_CONTEXT(ctx
);
603 if (MESA_VERBOSE
& VERBOSE_API
)
604 _mesa_debug(ctx
, "glIsProgramPipeline(%u)\n", pipeline
);
606 struct gl_pipeline_object
*obj
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
610 return obj
->EverBound
;
614 * glGetProgramPipelineiv() - get pipeline shader state.
617 _mesa_GetProgramPipelineiv(GLuint pipeline
, GLenum pname
, GLint
*params
)
619 GET_CURRENT_CONTEXT(ctx
);
620 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
622 if (MESA_VERBOSE
& VERBOSE_API
)
623 _mesa_debug(ctx
, "glGetProgramPipelineiv(%u, %d, %p)\n",
624 pipeline
, pname
, params
);
626 /* Are geometry shaders available in this context?
628 const bool has_gs
= _mesa_has_geometry_shaders(ctx
);
629 const bool has_tess
= _mesa_has_tessellation(ctx
);;
632 _mesa_error(ctx
, GL_INVALID_OPERATION
,
633 "glGetProgramPipelineiv(pipeline)");
637 /* Object is created by any Pipeline call but glGenProgramPipelines,
638 * glIsProgramPipeline and GetProgramPipelineInfoLog
640 pipe
->EverBound
= GL_TRUE
;
643 case GL_ACTIVE_PROGRAM
:
644 *params
= pipe
->ActiveProgram
? pipe
->ActiveProgram
->Name
: 0;
646 case GL_INFO_LOG_LENGTH
:
647 *params
= pipe
->InfoLog
? strlen(pipe
->InfoLog
) + 1 : 0;
649 case GL_VALIDATE_STATUS
:
650 *params
= pipe
->Validated
;
652 case GL_VERTEX_SHADER
:
653 *params
= pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]
654 ? pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]->Name
: 0;
656 case GL_TESS_EVALUATION_SHADER
:
659 *params
= pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
]
660 ? pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
]->Name
: 0;
662 case GL_TESS_CONTROL_SHADER
:
665 *params
= pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
]
666 ? pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
]->Name
: 0;
668 case GL_GEOMETRY_SHADER
:
671 *params
= pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
]
672 ? pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
]->Name
: 0;
674 case GL_FRAGMENT_SHADER
:
675 *params
= pipe
->CurrentProgram
[MESA_SHADER_FRAGMENT
]
676 ? pipe
->CurrentProgram
[MESA_SHADER_FRAGMENT
]->Name
: 0;
678 case GL_COMPUTE_SHADER
:
679 if (!_mesa_has_compute_shaders(ctx
))
681 *params
= pipe
->CurrentProgram
[MESA_SHADER_COMPUTE
]
682 ? pipe
->CurrentProgram
[MESA_SHADER_COMPUTE
]->Name
: 0;
688 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramPipelineiv(pname=%s)",
689 _mesa_enum_to_string(pname
));
693 * Determines whether every stage in a linked program is active in the
694 * specified pipeline.
697 program_stages_all_active(struct gl_pipeline_object
*pipe
,
698 const struct gl_shader_program
*prog
)
706 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
707 if (prog
->_LinkedShaders
[i
]) {
708 if (pipe
->CurrentProgram
[i
]) {
709 if (prog
->Name
!= pipe
->CurrentProgram
[i
]->Name
) {
719 pipe
->InfoLog
= ralloc_asprintf(pipe
,
720 "Program %d is not active for all "
721 "shaders that was linked",
729 program_stages_interleaved_illegally(const struct gl_pipeline_object
*pipe
)
731 struct gl_shader_program
*prev
= NULL
;
734 /* Look for programs bound to stages: A -> B -> A, with any intervening
735 * sequence of unrelated programs or empty stages.
737 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
738 struct gl_shader_program
*cur
= pipe
->CurrentProgram
[i
];
740 /* Empty stages anywhere in the pipe are OK */
741 if (!cur
|| cur
== prev
)
745 /* We've seen an A -> B transition; look at the rest of the pipe
746 * to see if we ever see A again.
748 for (j
= i
+ 1; j
< MESA_SHADER_STAGES
; j
++) {
749 if (pipe
->CurrentProgram
[j
] == prev
)
761 _mesa_validate_program_pipeline(struct gl_context
* ctx
,
762 struct gl_pipeline_object
*pipe
)
765 bool program_empty
= true;
767 pipe
->Validated
= GL_FALSE
;
769 /* Release and reset the info log.
771 if (pipe
->InfoLog
!= NULL
)
772 ralloc_free(pipe
->InfoLog
);
774 pipe
->InfoLog
= NULL
;
776 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
777 * OpenGL 4.1 spec says:
779 * "[INVALID_OPERATION] is generated by any command that transfers
780 * vertices to the GL if:
782 * - A program object is active for at least one, but not all of
783 * the shader stages that were present when the program was
786 * For each possible program stage, verify that the program bound to that
787 * stage has all of its stages active. In other words, if the program
788 * bound to the vertex stage also has a fragment shader, the fragment
789 * shader must also be bound to the fragment stage.
791 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
792 if (!program_stages_all_active(pipe
, pipe
->CurrentProgram
[i
])) {
797 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
798 * OpenGL 4.1 spec says:
800 * "[INVALID_OPERATION] is generated by any command that transfers
801 * vertices to the GL if:
805 * - One program object is active for at least two shader stages
806 * and a second program is active for a shader stage between two
807 * stages for which the first program was active."
809 if (program_stages_interleaved_illegally(pipe
)) {
812 "Program is active for multiple shader stages with an "
813 "intervening stage provided by another program");
817 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
818 * OpenGL 4.1 spec says:
820 * "[INVALID_OPERATION] is generated by any command that transfers
821 * vertices to the GL if:
825 * - There is an active program for tessellation control,
826 * tessellation evaluation, or geometry stages with corresponding
827 * executable shader, but there is no active program with
828 * executable vertex shader."
830 if (!pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]
831 && (pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
] ||
832 pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
] ||
833 pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
])) {
834 pipe
->InfoLog
= ralloc_strdup(pipe
, "Program lacks a vertex shader");
838 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
839 * OpenGL 4.1 spec says:
841 * "[INVALID_OPERATION] is generated by any command that transfers
842 * vertices to the GL if:
846 * - There is no current program object specified by UseProgram,
847 * there is a current program pipeline object, and the current
848 * program for any shader stage has been relinked since being
849 * applied to the pipeline object via UseProgramStages with the
850 * PROGRAM_SEPARABLE parameter set to FALSE.
852 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
853 if (pipe
->CurrentProgram
[i
] && !pipe
->CurrentProgram
[i
]->SeparateShader
) {
854 pipe
->InfoLog
= ralloc_asprintf(pipe
,
855 "Program %d was relinked without "
856 "PROGRAM_SEPARABLE state",
857 pipe
->CurrentProgram
[i
]->Name
);
862 /* Section 11.1.3.11 (Validation) of the OpenGL 4.5 spec says:
864 * "An INVALID_OPERATION error is generated by any command that trans-
865 * fers vertices to the GL or launches compute work if the current set
866 * of active program objects cannot be executed, for reasons including:
870 * - There is no current program object specified by UseProgram,
871 * there is a current program pipeline object, and that object is
872 * empty (no executable code is installed for any stage).
874 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
875 if (pipe
->CurrentProgram
[i
]) {
876 program_empty
= false;
885 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
886 * OpenGL 4.1 spec says:
888 * "[INVALID_OPERATION] is generated by any command that transfers
889 * vertices to the GL if:
893 * - Any two active samplers in the current program object are of
894 * different types, but refer to the same texture image unit.
896 * - The number of active samplers in the program exceeds the
897 * maximum number of texture image units allowed."
899 if (!_mesa_sampler_uniforms_pipeline_are_valid(pipe
))
902 /* Validate inputs against outputs, this cannot be done during linking
903 * since programs have been linked separately from each other.
905 * From OpenGL 4.5 Core spec:
906 * "Separable program objects may have validation failures that cannot be
907 * detected without the complete program pipeline. Mismatched interfaces,
908 * improper usage of program objects together, and the same
909 * state-dependent failures can result in validation errors for such
912 * OpenGL ES 3.1 specification has the same text.
914 if (!_mesa_validate_pipeline_io(pipe
))
917 pipe
->Validated
= GL_TRUE
;
922 * Check compatibility of pipeline's program
925 _mesa_ValidateProgramPipeline(GLuint pipeline
)
927 GET_CURRENT_CONTEXT(ctx
);
929 if (MESA_VERBOSE
& VERBOSE_API
)
930 _mesa_debug(ctx
, "glValidateProgramPipeline(%u)\n", pipeline
);
932 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
935 _mesa_error(ctx
, GL_INVALID_OPERATION
,
936 "glValidateProgramPipeline(pipeline)");
940 _mesa_validate_program_pipeline(ctx
, pipe
);
944 _mesa_GetProgramPipelineInfoLog(GLuint pipeline
, GLsizei bufSize
,
945 GLsizei
*length
, GLchar
*infoLog
)
947 GET_CURRENT_CONTEXT(ctx
);
949 if (MESA_VERBOSE
& VERBOSE_API
)
950 _mesa_debug(ctx
, "glGetProgramPipelineInfoLog(%u, %d, %p, %p)\n",
951 pipeline
, bufSize
, length
, infoLog
);
953 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
956 _mesa_error(ctx
, GL_INVALID_VALUE
,
957 "glGetProgramPipelineInfoLog(pipeline)");
962 _mesa_error(ctx
, GL_INVALID_VALUE
,
963 "glGetProgramPipelineInfoLog(bufSize)");
968 _mesa_copy_string(infoLog
, bufSize
, length
, pipe
->InfoLog
);