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(UNUSED 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
->data
->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
->data
->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
)
446 /* First bind the Pipeline to pipeline binding point */
447 _mesa_reference_pipeline_object(ctx
, &ctx
->Pipeline
.Current
, pipe
);
449 /* Section 2.11.3 (Program Objects) of the OpenGL 4.1 spec says:
451 * "If there is a current program object established by UseProgram,
452 * that program is considered current for all stages. Otherwise, if
453 * there is a bound program pipeline object (see section 2.11.4), the
454 * program bound to the appropriate stage of the pipeline object is
455 * considered current."
457 if (&ctx
->Shader
!= ctx
->_Shader
) {
459 /* Bound the pipeline to the current program and
460 * restore the pipeline state
462 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, pipe
);
464 /* Unbind the pipeline */
465 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
,
466 ctx
->Pipeline
.Default
);
469 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
471 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
472 _mesa_shader_program_init_subroutine_defaults(ctx
, ctx
->_Shader
->CurrentProgram
[i
]);
477 * Delete a set of pipeline objects.
479 * \param n Number of pipeline objects to delete.
480 * \param ids pipeline of \c n pipeline object IDs.
483 _mesa_DeleteProgramPipelines(GLsizei n
, const GLuint
*pipelines
)
485 GET_CURRENT_CONTEXT(ctx
);
488 if (MESA_VERBOSE
& VERBOSE_API
)
489 _mesa_debug(ctx
, "glDeleteProgramPipelines(%d, %p)\n", n
, pipelines
);
492 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteProgramPipelines(n<0)");
496 for (i
= 0; i
< n
; i
++) {
497 struct gl_pipeline_object
*obj
=
498 _mesa_lookup_pipeline_object(ctx
, pipelines
[i
]);
501 assert(obj
->Name
== pipelines
[i
]);
503 /* If the pipeline object is currently bound, the spec says "If an
504 * object that is currently bound is deleted, the binding for that
505 * object reverts to zero and no program pipeline object becomes
508 if (obj
== ctx
->Pipeline
.Current
) {
509 _mesa_BindProgramPipeline(0);
512 /* The ID is immediately freed for re-use */
513 remove_pipeline_object(ctx
, obj
);
515 /* Unreference the pipeline object.
516 * If refcount hits zero, the object will be deleted.
518 _mesa_reference_pipeline_object(ctx
, &obj
, NULL
);
524 * Generate a set of unique pipeline object IDs and store them in \c pipelines.
525 * \param n Number of IDs to generate.
526 * \param pipelines pipeline of \c n locations to store the IDs.
529 create_program_pipelines(struct gl_context
*ctx
, GLsizei n
, GLuint
*pipelines
,
536 func
= dsa
? "glCreateProgramPipelines" : "glGenProgramPipelines";
539 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s (n < 0)", func
);
547 first
= _mesa_HashFindFreeKeyBlock(ctx
->Pipeline
.Objects
, n
);
549 for (i
= 0; i
< n
; i
++) {
550 struct gl_pipeline_object
*obj
;
551 GLuint name
= first
+ i
;
553 obj
= _mesa_new_pipeline_object(ctx
, name
);
555 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
560 /* make dsa-allocated objects behave like program objects */
561 obj
->EverBound
= GL_TRUE
;
564 save_pipeline_object(ctx
, obj
);
565 pipelines
[i
] = first
+ i
;
571 _mesa_GenProgramPipelines(GLsizei n
, GLuint
*pipelines
)
573 GET_CURRENT_CONTEXT(ctx
);
575 if (MESA_VERBOSE
& VERBOSE_API
)
576 _mesa_debug(ctx
, "glGenProgramPipelines(%d, %p)\n", n
, pipelines
);
578 create_program_pipelines(ctx
, n
, pipelines
, false);
582 _mesa_CreateProgramPipelines(GLsizei n
, GLuint
*pipelines
)
584 GET_CURRENT_CONTEXT(ctx
);
586 if (MESA_VERBOSE
& VERBOSE_API
)
587 _mesa_debug(ctx
, "glCreateProgramPipelines(%d, %p)\n", n
, pipelines
);
589 create_program_pipelines(ctx
, n
, pipelines
, true);
593 * Determine if ID is the name of an pipeline object.
595 * \param id ID of the potential pipeline object.
596 * \return \c GL_TRUE if \c id is the name of a pipeline object,
597 * \c GL_FALSE otherwise.
600 _mesa_IsProgramPipeline(GLuint pipeline
)
602 GET_CURRENT_CONTEXT(ctx
);
604 if (MESA_VERBOSE
& VERBOSE_API
)
605 _mesa_debug(ctx
, "glIsProgramPipeline(%u)\n", pipeline
);
607 struct gl_pipeline_object
*obj
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
611 return obj
->EverBound
;
615 * glGetProgramPipelineiv() - get pipeline shader state.
618 _mesa_GetProgramPipelineiv(GLuint pipeline
, GLenum pname
, GLint
*params
)
620 GET_CURRENT_CONTEXT(ctx
);
621 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
623 if (MESA_VERBOSE
& VERBOSE_API
)
624 _mesa_debug(ctx
, "glGetProgramPipelineiv(%u, %d, %p)\n",
625 pipeline
, pname
, params
);
627 /* Are geometry shaders available in this context?
629 const bool has_gs
= _mesa_has_geometry_shaders(ctx
);
630 const bool has_tess
= _mesa_has_tessellation(ctx
);
633 _mesa_error(ctx
, GL_INVALID_OPERATION
,
634 "glGetProgramPipelineiv(pipeline)");
638 /* Object is created by any Pipeline call but glGenProgramPipelines,
639 * glIsProgramPipeline and GetProgramPipelineInfoLog
641 pipe
->EverBound
= GL_TRUE
;
644 case GL_ACTIVE_PROGRAM
:
645 *params
= pipe
->ActiveProgram
? pipe
->ActiveProgram
->Name
: 0;
647 case GL_INFO_LOG_LENGTH
:
648 *params
= (pipe
->InfoLog
&& pipe
->InfoLog
[0] != '\0') ?
649 strlen(pipe
->InfoLog
) + 1 : 0;
651 case GL_VALIDATE_STATUS
:
652 *params
= pipe
->Validated
;
654 case GL_VERTEX_SHADER
:
655 *params
= pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]
656 ? pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]->Name
: 0;
658 case GL_TESS_EVALUATION_SHADER
:
661 *params
= pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
]
662 ? pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
]->Name
: 0;
664 case GL_TESS_CONTROL_SHADER
:
667 *params
= pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
]
668 ? pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
]->Name
: 0;
670 case GL_GEOMETRY_SHADER
:
673 *params
= pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
]
674 ? pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
]->Name
: 0;
676 case GL_FRAGMENT_SHADER
:
677 *params
= pipe
->CurrentProgram
[MESA_SHADER_FRAGMENT
]
678 ? pipe
->CurrentProgram
[MESA_SHADER_FRAGMENT
]->Name
: 0;
680 case GL_COMPUTE_SHADER
:
681 if (!_mesa_has_compute_shaders(ctx
))
683 *params
= pipe
->CurrentProgram
[MESA_SHADER_COMPUTE
]
684 ? pipe
->CurrentProgram
[MESA_SHADER_COMPUTE
]->Name
: 0;
690 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramPipelineiv(pname=%s)",
691 _mesa_enum_to_string(pname
));
695 * Determines whether every stage in a linked program is active in the
696 * specified pipeline.
699 program_stages_all_active(struct gl_pipeline_object
*pipe
,
700 const struct gl_shader_program
*prog
)
708 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
709 if (prog
->_LinkedShaders
[i
]) {
710 if (pipe
->CurrentProgram
[i
]) {
711 if (prog
->Name
!= pipe
->CurrentProgram
[i
]->Name
) {
721 pipe
->InfoLog
= ralloc_asprintf(pipe
,
722 "Program %d is not active for all "
723 "shaders that was linked",
731 program_stages_interleaved_illegally(const struct gl_pipeline_object
*pipe
)
733 struct gl_shader_program
*prev
= NULL
;
736 /* Look for programs bound to stages: A -> B -> A, with any intervening
737 * sequence of unrelated programs or empty stages.
739 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
740 struct gl_shader_program
*cur
= pipe
->CurrentProgram
[i
];
742 /* Empty stages anywhere in the pipe are OK */
743 if (!cur
|| cur
== prev
)
747 /* We've seen an A -> B transition; look at the rest of the pipe
748 * to see if we ever see A again.
750 for (j
= i
+ 1; j
< MESA_SHADER_STAGES
; j
++) {
751 if (pipe
->CurrentProgram
[j
] == prev
)
763 _mesa_validate_program_pipeline(struct gl_context
* ctx
,
764 struct gl_pipeline_object
*pipe
)
767 bool program_empty
= true;
769 pipe
->Validated
= GL_FALSE
;
771 /* Release and reset the info log.
773 if (pipe
->InfoLog
!= NULL
)
774 ralloc_free(pipe
->InfoLog
);
776 pipe
->InfoLog
= NULL
;
778 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
779 * OpenGL 4.1 spec says:
781 * "[INVALID_OPERATION] is generated by any command that transfers
782 * vertices to the GL if:
784 * - A program object is active for at least one, but not all of
785 * the shader stages that were present when the program was
788 * For each possible program stage, verify that the program bound to that
789 * stage has all of its stages active. In other words, if the program
790 * bound to the vertex stage also has a fragment shader, the fragment
791 * shader must also be bound to the fragment stage.
793 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
794 if (!program_stages_all_active(pipe
, pipe
->CurrentProgram
[i
])) {
799 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
800 * OpenGL 4.1 spec says:
802 * "[INVALID_OPERATION] is generated by any command that transfers
803 * vertices to the GL if:
807 * - One program object is active for at least two shader stages
808 * and a second program is active for a shader stage between two
809 * stages for which the first program was active."
811 if (program_stages_interleaved_illegally(pipe
)) {
814 "Program is active for multiple shader stages with an "
815 "intervening stage provided by another program");
819 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
820 * OpenGL 4.1 spec says:
822 * "[INVALID_OPERATION] is generated by any command that transfers
823 * vertices to the GL if:
827 * - There is an active program for tessellation control,
828 * tessellation evaluation, or geometry stages with corresponding
829 * executable shader, but there is no active program with
830 * executable vertex shader."
832 if (!pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]
833 && (pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
] ||
834 pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
] ||
835 pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
])) {
836 pipe
->InfoLog
= ralloc_strdup(pipe
, "Program lacks a vertex shader");
840 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
841 * OpenGL 4.1 spec says:
843 * "[INVALID_OPERATION] is generated by any command that transfers
844 * vertices to the GL if:
848 * - There is no current program object specified by UseProgram,
849 * there is a current program pipeline object, and the current
850 * program for any shader stage has been relinked since being
851 * applied to the pipeline object via UseProgramStages with the
852 * PROGRAM_SEPARABLE parameter set to FALSE.
854 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
855 if (pipe
->CurrentProgram
[i
] && !pipe
->CurrentProgram
[i
]->SeparateShader
) {
856 pipe
->InfoLog
= ralloc_asprintf(pipe
,
857 "Program %d was relinked without "
858 "PROGRAM_SEPARABLE state",
859 pipe
->CurrentProgram
[i
]->Name
);
864 /* Section 11.1.3.11 (Validation) of the OpenGL 4.5 spec says:
866 * "An INVALID_OPERATION error is generated by any command that trans-
867 * fers vertices to the GL or launches compute work if the current set
868 * of active program objects cannot be executed, for reasons including:
872 * - There is no current program object specified by UseProgram,
873 * there is a current program pipeline object, and that object is
874 * empty (no executable code is installed for any stage).
876 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
877 if (pipe
->CurrentProgram
[i
]) {
878 program_empty
= false;
887 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
888 * OpenGL 4.1 spec says:
890 * "[INVALID_OPERATION] is generated by any command that transfers
891 * vertices to the GL if:
895 * - Any two active samplers in the current program object are of
896 * different types, but refer to the same texture image unit.
898 * - The number of active samplers in the program exceeds the
899 * maximum number of texture image units allowed."
901 if (!_mesa_sampler_uniforms_pipeline_are_valid(pipe
))
904 /* Validate inputs against outputs, this cannot be done during linking
905 * since programs have been linked separately from each other.
907 * Section 11.1.3.11 (Validation) of the OpenGL 4.5 Core Profile spec says:
909 * "Separable program objects may have validation failures that cannot be
910 * detected without the complete program pipeline. Mismatched interfaces,
911 * improper usage of program objects together, and the same
912 * state-dependent failures can result in validation errors for such
915 * OpenGL ES 3.1 specification has the same text.
917 * Section 11.1.3.11 (Validation) of the OpenGL ES spec also says:
919 * An INVALID_OPERATION error is generated by any command that transfers
920 * vertices to the GL or launches compute work if the current set of
921 * active program objects cannot be executed, for reasons including:
923 * * The current program pipeline object contains a shader interface
924 * that doesn't have an exact match (see section 7.4.1)
926 * Based on this, only perform the most-strict checking on ES or when the
927 * application has created a debug context.
929 if ((_mesa_is_gles(ctx
) || (ctx
->Const
.ContextFlags
& GL_CONTEXT_FLAG_DEBUG_BIT
)) &&
930 !_mesa_validate_pipeline_io(pipe
)) {
931 if (_mesa_is_gles(ctx
))
934 static GLuint msg_id
= 0;
936 _mesa_gl_debug(ctx
, &msg_id
,
937 MESA_DEBUG_SOURCE_API
,
938 MESA_DEBUG_TYPE_PORTABILITY
,
939 MESA_DEBUG_SEVERITY_MEDIUM
,
940 "glValidateProgramPipeline: pipeline %u does not meet "
941 "strict OpenGL ES 3.1 requirements and may not be "
942 "portable across desktop hardware\n",
946 pipe
->Validated
= GL_TRUE
;
951 * Check compatibility of pipeline's program
954 _mesa_ValidateProgramPipeline(GLuint pipeline
)
956 GET_CURRENT_CONTEXT(ctx
);
958 if (MESA_VERBOSE
& VERBOSE_API
)
959 _mesa_debug(ctx
, "glValidateProgramPipeline(%u)\n", pipeline
);
961 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
964 _mesa_error(ctx
, GL_INVALID_OPERATION
,
965 "glValidateProgramPipeline(pipeline)");
969 _mesa_validate_program_pipeline(ctx
, pipe
);
973 _mesa_GetProgramPipelineInfoLog(GLuint pipeline
, GLsizei bufSize
,
974 GLsizei
*length
, GLchar
*infoLog
)
976 GET_CURRENT_CONTEXT(ctx
);
978 if (MESA_VERBOSE
& VERBOSE_API
)
979 _mesa_debug(ctx
, "glGetProgramPipelineInfoLog(%u, %d, %p, %p)\n",
980 pipeline
, bufSize
, length
, infoLog
);
982 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
985 _mesa_error(ctx
, GL_INVALID_VALUE
,
986 "glGetProgramPipelineInfoLog(pipeline)");
991 _mesa_error(ctx
, GL_INVALID_VALUE
,
992 "glGetProgramPipelineInfoLog(bufSize)");
996 _mesa_copy_string(infoLog
, bufSize
, length
, pipe
->InfoLog
);