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 "glsl/glsl_parser_extras.h"
47 #include "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
);
347 * Use the named shader program for subsequent glUniform calls (if pipeline
351 _mesa_ActiveShaderProgram(GLuint pipeline
, GLuint program
)
353 GET_CURRENT_CONTEXT(ctx
);
354 struct gl_shader_program
*shProg
= NULL
;
355 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
357 if (MESA_VERBOSE
& VERBOSE_API
)
358 _mesa_debug(ctx
, "glActiveShaderProgram(%u, %u)\n", pipeline
, program
);
361 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
362 "glActiveShaderProgram(program)");
368 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glActiveShaderProgram(pipeline)");
372 /* Object is created by any Pipeline call but glGenProgramPipelines,
373 * glIsProgramPipeline and GetProgramPipelineInfoLog
375 pipe
->EverBound
= GL_TRUE
;
377 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
378 _mesa_error(ctx
, GL_INVALID_OPERATION
,
379 "glActiveShaderProgram(program %u not linked)", shProg
->Name
);
383 _mesa_reference_shader_program(ctx
, &pipe
->ActiveProgram
, shProg
);
387 * Make program of the pipeline current
390 _mesa_BindProgramPipeline(GLuint pipeline
)
392 GET_CURRENT_CONTEXT(ctx
);
393 struct gl_pipeline_object
*newObj
= NULL
;
395 if (MESA_VERBOSE
& VERBOSE_API
)
396 _mesa_debug(ctx
, "glBindProgramPipeline(%u)\n", pipeline
);
398 /* Rebinding the same pipeline object: no change.
400 if (ctx
->_Shader
->Name
== pipeline
)
403 /* Section 2.17.2 (Transform Feedback Primitive Capture) of the OpenGL 4.1
406 * "The error INVALID_OPERATION is generated:
410 * - by BindProgramPipeline if the current transform feedback
411 * object is active and not paused;
413 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
414 _mesa_error(ctx
, GL_INVALID_OPERATION
,
415 "glBindProgramPipeline(transform feedback active)");
419 /* Get pointer to new pipeline object (newObj)
422 /* non-default pipeline object */
423 newObj
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
425 _mesa_error(ctx
, GL_INVALID_OPERATION
,
426 "glBindProgramPipeline(non-gen name)");
430 /* Object is created by any Pipeline call but glGenProgramPipelines,
431 * glIsProgramPipeline and GetProgramPipelineInfoLog
433 newObj
->EverBound
= GL_TRUE
;
436 _mesa_bind_pipeline(ctx
, newObj
);
440 _mesa_bind_pipeline(struct gl_context
*ctx
,
441 struct gl_pipeline_object
*pipe
)
443 /* First bind the Pipeline to pipeline binding point */
444 _mesa_reference_pipeline_object(ctx
, &ctx
->Pipeline
.Current
, pipe
);
446 /* Section 2.11.3 (Program Objects) of the OpenGL 4.1 spec says:
448 * "If there is a current program object established by UseProgram,
449 * that program is considered current for all stages. Otherwise, if
450 * there is a bound program pipeline object (see section 2.11.4), the
451 * program bound to the appropriate stage of the pipeline object is
452 * considered current."
454 if (&ctx
->Shader
!= ctx
->_Shader
) {
456 /* Bound the pipeline to the current program and
457 * restore the pipeline state
459 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, pipe
);
461 /* Unbind the pipeline */
462 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
,
463 ctx
->Pipeline
.Default
);
466 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
468 if (ctx
->Driver
.UseProgram
)
469 ctx
->Driver
.UseProgram(ctx
, NULL
);
474 * Delete a set of pipeline objects.
476 * \param n Number of pipeline objects to delete.
477 * \param ids pipeline of \c n pipeline object IDs.
480 _mesa_DeleteProgramPipelines(GLsizei n
, const GLuint
*pipelines
)
482 GET_CURRENT_CONTEXT(ctx
);
485 if (MESA_VERBOSE
& VERBOSE_API
)
486 _mesa_debug(ctx
, "glDeleteProgramPipelines(%d, %p)\n", n
, pipelines
);
489 _mesa_error(ctx
, GL_INVALID_VALUE
, "glDeleteProgramPipelines(n<0)");
493 for (i
= 0; i
< n
; i
++) {
494 struct gl_pipeline_object
*obj
=
495 _mesa_lookup_pipeline_object(ctx
, pipelines
[i
]);
498 assert(obj
->Name
== pipelines
[i
]);
500 /* If the pipeline object is currently bound, the spec says "If an
501 * object that is currently bound is deleted, the binding for that
502 * object reverts to zero and no program pipeline object becomes
505 if (obj
== ctx
->Pipeline
.Current
) {
506 _mesa_BindProgramPipeline(0);
509 /* The ID is immediately freed for re-use */
510 remove_pipeline_object(ctx
, obj
);
512 /* Unreference the pipeline object.
513 * If refcount hits zero, the object will be deleted.
515 _mesa_reference_pipeline_object(ctx
, &obj
, NULL
);
521 * Generate a set of unique pipeline object IDs and store them in \c pipelines.
522 * \param n Number of IDs to generate.
523 * \param pipelines pipeline of \c n locations to store the IDs.
526 create_program_pipelines(struct gl_context
*ctx
, GLsizei n
, GLuint
*pipelines
,
533 func
= dsa
? "glCreateProgramPipelines" : "glGenProgramPipelines";
536 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s (n < 0)", func
);
544 first
= _mesa_HashFindFreeKeyBlock(ctx
->Pipeline
.Objects
, n
);
546 for (i
= 0; i
< n
; i
++) {
547 struct gl_pipeline_object
*obj
;
548 GLuint name
= first
+ i
;
550 obj
= _mesa_new_pipeline_object(ctx
, name
);
552 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "%s", func
);
557 /* make dsa-allocated objects behave like program objects */
558 obj
->EverBound
= GL_TRUE
;
561 save_pipeline_object(ctx
, obj
);
562 pipelines
[i
] = first
+ i
;
568 _mesa_GenProgramPipelines(GLsizei n
, GLuint
*pipelines
)
570 GET_CURRENT_CONTEXT(ctx
);
572 if (MESA_VERBOSE
& VERBOSE_API
)
573 _mesa_debug(ctx
, "glGenProgramPipelines(%d, %p)\n", n
, pipelines
);
575 create_program_pipelines(ctx
, n
, pipelines
, false);
579 _mesa_CreateProgramPipelines(GLsizei n
, GLuint
*pipelines
)
581 GET_CURRENT_CONTEXT(ctx
);
583 if (MESA_VERBOSE
& VERBOSE_API
)
584 _mesa_debug(ctx
, "glCreateProgramPipelines(%d, %p)\n", n
, pipelines
);
586 create_program_pipelines(ctx
, n
, pipelines
, true);
590 * Determine if ID is the name of an pipeline object.
592 * \param id ID of the potential pipeline object.
593 * \return \c GL_TRUE if \c id is the name of a pipeline object,
594 * \c GL_FALSE otherwise.
597 _mesa_IsProgramPipeline(GLuint pipeline
)
599 GET_CURRENT_CONTEXT(ctx
);
601 if (MESA_VERBOSE
& VERBOSE_API
)
602 _mesa_debug(ctx
, "glIsProgramPipeline(%u)\n", pipeline
);
604 struct gl_pipeline_object
*obj
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
608 return obj
->EverBound
;
612 * glGetProgramPipelineiv() - get pipeline shader state.
615 _mesa_GetProgramPipelineiv(GLuint pipeline
, GLenum pname
, GLint
*params
)
617 GET_CURRENT_CONTEXT(ctx
);
618 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
620 if (MESA_VERBOSE
& VERBOSE_API
)
621 _mesa_debug(ctx
, "glGetProgramPipelineiv(%u, %d, %p)\n",
622 pipeline
, pname
, params
);
624 /* Are geometry shaders available in this context?
626 const bool has_gs
= _mesa_has_geometry_shaders(ctx
);
627 const bool has_tess
= _mesa_has_tessellation(ctx
);;
630 _mesa_error(ctx
, GL_INVALID_OPERATION
,
631 "glGetProgramPipelineiv(pipeline)");
635 /* Object is created by any Pipeline call but glGenProgramPipelines,
636 * glIsProgramPipeline and GetProgramPipelineInfoLog
638 pipe
->EverBound
= GL_TRUE
;
641 case GL_ACTIVE_PROGRAM
:
642 *params
= pipe
->ActiveProgram
? pipe
->ActiveProgram
->Name
: 0;
644 case GL_INFO_LOG_LENGTH
:
645 *params
= pipe
->InfoLog
? strlen(pipe
->InfoLog
) + 1 : 0;
647 case GL_VALIDATE_STATUS
:
648 *params
= pipe
->Validated
;
650 case GL_VERTEX_SHADER
:
651 *params
= pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]
652 ? pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]->Name
: 0;
654 case GL_TESS_EVALUATION_SHADER
:
657 *params
= pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
]
658 ? pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
]->Name
: 0;
660 case GL_TESS_CONTROL_SHADER
:
663 *params
= pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
]
664 ? pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
]->Name
: 0;
666 case GL_GEOMETRY_SHADER
:
669 *params
= pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
]
670 ? pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
]->Name
: 0;
672 case GL_FRAGMENT_SHADER
:
673 *params
= pipe
->CurrentProgram
[MESA_SHADER_FRAGMENT
]
674 ? pipe
->CurrentProgram
[MESA_SHADER_FRAGMENT
]->Name
: 0;
676 case GL_COMPUTE_SHADER
:
677 if (!_mesa_has_compute_shaders(ctx
))
679 *params
= pipe
->CurrentProgram
[MESA_SHADER_COMPUTE
]
680 ? pipe
->CurrentProgram
[MESA_SHADER_COMPUTE
]->Name
: 0;
686 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramPipelineiv(pname=%s)",
687 _mesa_enum_to_string(pname
));
691 * Determines whether every stage in a linked program is active in the
692 * specified pipeline.
695 program_stages_all_active(struct gl_pipeline_object
*pipe
,
696 const struct gl_shader_program
*prog
)
704 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
705 if (prog
->_LinkedShaders
[i
]) {
706 if (pipe
->CurrentProgram
[i
]) {
707 if (prog
->Name
!= pipe
->CurrentProgram
[i
]->Name
) {
717 pipe
->InfoLog
= ralloc_asprintf(pipe
,
718 "Program %d is not active for all "
719 "shaders that was linked",
727 program_stages_interleaved_illegally(const struct gl_pipeline_object
*pipe
)
729 struct gl_shader_program
*prev
= NULL
;
732 /* Look for programs bound to stages: A -> B -> A, with any intervening
733 * sequence of unrelated programs or empty stages.
735 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
736 struct gl_shader_program
*cur
= pipe
->CurrentProgram
[i
];
738 /* Empty stages anywhere in the pipe are OK */
739 if (!cur
|| cur
== prev
)
743 /* We've seen an A -> B transition; look at the rest of the pipe
744 * to see if we ever see A again.
746 for (j
= i
+ 1; j
< MESA_SHADER_STAGES
; j
++) {
747 if (pipe
->CurrentProgram
[j
] == prev
)
759 _mesa_validate_program_pipeline(struct gl_context
* ctx
,
760 struct gl_pipeline_object
*pipe
)
763 bool program_empty
= true;
765 pipe
->Validated
= GL_FALSE
;
767 /* Release and reset the info log.
769 if (pipe
->InfoLog
!= NULL
)
770 ralloc_free(pipe
->InfoLog
);
772 pipe
->InfoLog
= NULL
;
774 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
775 * OpenGL 4.1 spec says:
777 * "[INVALID_OPERATION] is generated by any command that transfers
778 * vertices to the GL if:
780 * - A program object is active for at least one, but not all of
781 * the shader stages that were present when the program was
784 * For each possible program stage, verify that the program bound to that
785 * stage has all of its stages active. In other words, if the program
786 * bound to the vertex stage also has a fragment shader, the fragment
787 * shader must also be bound to the fragment stage.
789 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
790 if (!program_stages_all_active(pipe
, pipe
->CurrentProgram
[i
])) {
795 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
796 * OpenGL 4.1 spec says:
798 * "[INVALID_OPERATION] is generated by any command that transfers
799 * vertices to the GL if:
803 * - One program object is active for at least two shader stages
804 * and a second program is active for a shader stage between two
805 * stages for which the first program was active."
807 if (program_stages_interleaved_illegally(pipe
)) {
810 "Program is active for multiple shader stages with an "
811 "intervening stage provided by another program");
815 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
816 * OpenGL 4.1 spec says:
818 * "[INVALID_OPERATION] is generated by any command that transfers
819 * vertices to the GL if:
823 * - There is an active program for tessellation control,
824 * tessellation evaluation, or geometry stages with corresponding
825 * executable shader, but there is no active program with
826 * executable vertex shader."
828 if (!pipe
->CurrentProgram
[MESA_SHADER_VERTEX
]
829 && (pipe
->CurrentProgram
[MESA_SHADER_GEOMETRY
] ||
830 pipe
->CurrentProgram
[MESA_SHADER_TESS_CTRL
] ||
831 pipe
->CurrentProgram
[MESA_SHADER_TESS_EVAL
])) {
832 pipe
->InfoLog
= ralloc_strdup(pipe
, "Program lacks a vertex shader");
836 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
837 * OpenGL 4.1 spec says:
839 * "[INVALID_OPERATION] is generated by any command that transfers
840 * vertices to the GL if:
844 * - There is no current program object specified by UseProgram,
845 * there is a current program pipeline object, and the current
846 * program for any shader stage has been relinked since being
847 * applied to the pipeline object via UseProgramStages with the
848 * PROGRAM_SEPARABLE parameter set to FALSE.
850 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
851 if (pipe
->CurrentProgram
[i
] && !pipe
->CurrentProgram
[i
]->SeparateShader
) {
852 pipe
->InfoLog
= ralloc_asprintf(pipe
,
853 "Program %d was relinked without "
854 "PROGRAM_SEPARABLE state",
855 pipe
->CurrentProgram
[i
]->Name
);
860 /* Section 11.1.3.11 (Validation) of the OpenGL 4.5 spec says:
862 * "An INVALID_OPERATION error is generated by any command that trans-
863 * fers vertices to the GL or launches compute work if the current set
864 * of active program objects cannot be executed, for reasons including:
868 * - There is no current program object specified by UseProgram,
869 * there is a current program pipeline object, and that object is
870 * empty (no executable code is installed for any stage).
872 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
873 if (pipe
->CurrentProgram
[i
]) {
874 program_empty
= false;
883 /* Section 2.11.11 (Shader Execution), subheading "Validation," of the
884 * OpenGL 4.1 spec says:
886 * "[INVALID_OPERATION] is generated by any command that transfers
887 * vertices to the GL if:
891 * - Any two active samplers in the current program object are of
892 * different types, but refer to the same texture image unit.
894 * - The number of active samplers in the program exceeds the
895 * maximum number of texture image units allowed."
897 if (!_mesa_sampler_uniforms_pipeline_are_valid(pipe
))
900 /* Validate inputs against outputs, this cannot be done during linking
901 * since programs have been linked separately from each other.
903 * From OpenGL 4.5 Core spec:
904 * "Separable program objects may have validation failures that cannot be
905 * detected without the complete program pipeline. Mismatched interfaces,
906 * improper usage of program objects together, and the same
907 * state-dependent failures can result in validation errors for such
910 * OpenGL ES 3.1 specification has the same text.
912 if (!_mesa_validate_pipeline_io(pipe
))
915 pipe
->Validated
= GL_TRUE
;
920 * Check compatibility of pipeline's program
923 _mesa_ValidateProgramPipeline(GLuint pipeline
)
925 GET_CURRENT_CONTEXT(ctx
);
927 if (MESA_VERBOSE
& VERBOSE_API
)
928 _mesa_debug(ctx
, "glValidateProgramPipeline(%u)\n", pipeline
);
930 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
933 _mesa_error(ctx
, GL_INVALID_OPERATION
,
934 "glValidateProgramPipeline(pipeline)");
938 _mesa_validate_program_pipeline(ctx
, pipe
);
942 _mesa_GetProgramPipelineInfoLog(GLuint pipeline
, GLsizei bufSize
,
943 GLsizei
*length
, GLchar
*infoLog
)
945 GET_CURRENT_CONTEXT(ctx
);
947 if (MESA_VERBOSE
& VERBOSE_API
)
948 _mesa_debug(ctx
, "glGetProgramPipelineInfoLog(%u, %d, %p, %p)\n",
949 pipeline
, bufSize
, length
, infoLog
);
951 struct gl_pipeline_object
*pipe
= _mesa_lookup_pipeline_object(ctx
, pipeline
);
954 _mesa_error(ctx
, GL_INVALID_VALUE
,
955 "glGetProgramPipelineInfoLog(pipeline)");
960 _mesa_error(ctx
, GL_INVALID_VALUE
,
961 "glGetProgramPipelineInfoLog(bufSize)");
966 _mesa_copy_string(infoLog
, bufSize
, length
, pipe
->InfoLog
);