2 * Mesa 3-D graphics library
4 * Copyright (C) 2004-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009-2010 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR 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
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
30 * Implementation of GLSL-related API functions.
31 * The glUniform* functions are in uniforms.c
35 * 1. Check that the right error code is generated for all _mesa_error() calls.
36 * 2. Insert FLUSH_VERTICES calls in various places
41 #include "main/glheader.h"
42 #include "main/context.h"
43 #include "main/dispatch.h"
44 #include "main/enums.h"
45 #include "main/hash.h"
46 #include "main/mtypes.h"
47 #include "main/pipelineobj.h"
48 #include "main/shaderapi.h"
49 #include "main/shaderobj.h"
50 #include "main/transformfeedback.h"
51 #include "main/uniforms.h"
52 #include "compiler/glsl/glsl_parser_extras.h"
53 #include "compiler/glsl/ir.h"
54 #include "compiler/glsl/ir_uniform.h"
55 #include "compiler/glsl/program.h"
56 #include "program/program.h"
57 #include "program/prog_print.h"
58 #include "program/prog_parameter.h"
59 #include "util/ralloc.h"
60 #include "util/hash_table.h"
61 #include "util/mesa-sha1.h"
62 #include "util/crc32.h"
65 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
68 _mesa_get_shader_flags(void)
70 GLbitfield flags
= 0x0;
71 const char *env
= getenv("MESA_GLSL");
74 if (strstr(env
, "dump_on_error"))
75 flags
|= GLSL_DUMP_ON_ERROR
;
76 else if (strstr(env
, "dump"))
78 if (strstr(env
, "log"))
80 if (strstr(env
, "nopvert"))
81 flags
|= GLSL_NOP_VERT
;
82 if (strstr(env
, "nopfrag"))
83 flags
|= GLSL_NOP_FRAG
;
84 if (strstr(env
, "nopt"))
86 else if (strstr(env
, "opt"))
88 if (strstr(env
, "uniform"))
89 flags
|= GLSL_UNIFORMS
;
90 if (strstr(env
, "useprog"))
91 flags
|= GLSL_USE_PROG
;
92 if (strstr(env
, "errors"))
93 flags
|= GLSL_REPORT_ERRORS
;
100 * Memoized version of getenv("MESA_SHADER_CAPTURE_PATH").
103 _mesa_get_shader_capture_path(void)
105 static bool read_env_var
= false;
106 static const char *path
= NULL
;
109 path
= getenv("MESA_SHADER_CAPTURE_PATH");
117 * Initialize context's shader state.
120 _mesa_init_shader_state(struct gl_context
*ctx
)
122 /* Device drivers may override these to control what kind of instructions
123 * are generated by the GLSL compiler.
125 struct gl_shader_compiler_options options
;
129 memset(&options
, 0, sizeof(options
));
130 options
.MaxUnrollIterations
= 32;
131 options
.MaxIfDepth
= UINT_MAX
;
133 for (sh
= 0; sh
< MESA_SHADER_STAGES
; ++sh
)
134 memcpy(&ctx
->Const
.ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
136 ctx
->Shader
.Flags
= _mesa_get_shader_flags();
138 if (ctx
->Shader
.Flags
!= 0)
139 ctx
->Const
.GenerateTemporaryNames
= true;
141 /* Extended for ARB_separate_shader_objects */
142 ctx
->Shader
.RefCount
= 1;
143 mtx_init(&ctx
->Shader
.Mutex
, mtx_plain
);
145 ctx
->TessCtrlProgram
.patch_vertices
= 3;
146 for (i
= 0; i
< 4; ++i
)
147 ctx
->TessCtrlProgram
.patch_default_outer_level
[i
] = 1.0;
148 for (i
= 0; i
< 2; ++i
)
149 ctx
->TessCtrlProgram
.patch_default_inner_level
[i
] = 1.0;
154 * Free the per-context shader-related state.
157 _mesa_free_shader_state(struct gl_context
*ctx
)
160 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
161 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[i
],
164 _mesa_reference_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
, NULL
);
165 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
167 /* Extended for ARB_separate_shader_objects */
168 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
170 assert(ctx
->Shader
.RefCount
== 1);
171 mtx_destroy(&ctx
->Shader
.Mutex
);
176 * Copy string from <src> to <dst>, up to maxLength characters, returning
177 * length of <dst> in <length>.
178 * \param src the strings source
179 * \param maxLength max chars to copy
180 * \param length returns number of chars copied
181 * \param dst the string destination
184 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
185 GLsizei
*length
, const GLchar
*src
)
188 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
199 * Confirm that the a shader type is valid and supported by the implementation
201 * \param ctx Current GL context
202 * \param type Shader target
206 _mesa_validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
208 /* Note: when building built-in GLSL functions, this function may be
209 * invoked with ctx == NULL. In that case, we can only validate that it's
210 * a shader target we recognize, not that it's supported in the current
211 * context. But that's fine--we don't need any further validation than
212 * that when building built-in GLSL functions.
216 case GL_FRAGMENT_SHADER
:
217 return ctx
== NULL
|| ctx
->Extensions
.ARB_fragment_shader
;
218 case GL_VERTEX_SHADER
:
219 return ctx
== NULL
|| ctx
->Extensions
.ARB_vertex_shader
;
220 case GL_GEOMETRY_SHADER_ARB
:
221 return ctx
== NULL
|| _mesa_has_geometry_shaders(ctx
);
222 case GL_TESS_CONTROL_SHADER
:
223 case GL_TESS_EVALUATION_SHADER
:
224 return ctx
== NULL
|| _mesa_has_tessellation(ctx
);
225 case GL_COMPUTE_SHADER
:
226 return ctx
== NULL
|| _mesa_has_compute_shaders(ctx
);
234 is_program(struct gl_context
*ctx
, GLuint name
)
236 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
237 return shProg
? GL_TRUE
: GL_FALSE
;
242 is_shader(struct gl_context
*ctx
, GLuint name
)
244 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
245 return shader
? GL_TRUE
: GL_FALSE
;
250 * Attach shader to a shader program.
253 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
255 struct gl_shader_program
*shProg
;
256 struct gl_shader
*sh
;
259 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
261 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
265 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
270 n
= shProg
->NumShaders
;
271 for (i
= 0; i
< n
; i
++) {
272 if (shProg
->Shaders
[i
] == sh
) {
273 /* The shader is already attched to this program. The
274 * GL_ARB_shader_objects spec says:
276 * "The error INVALID_OPERATION is generated by AttachObjectARB
277 * if <obj> is already attached to <containerObj>."
279 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
281 } else if (same_type_disallowed
&&
282 shProg
->Shaders
[i
]->Stage
== sh
->Stage
) {
283 /* Shader with the same type is already attached to this program,
284 * OpenGL ES 2.0 and 3.0 specs say:
286 * "Multiple shader objects of the same type may not be attached
287 * to a single program object. [...] The error INVALID_OPERATION
288 * is generated if [...] another shader object of the same type
289 * as shader is already attached to program."
291 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
297 shProg
->Shaders
= realloc(shProg
->Shaders
,
298 (n
+ 1) * sizeof(struct gl_shader
*));
299 if (!shProg
->Shaders
) {
300 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
305 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
306 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
307 shProg
->NumShaders
++;
312 create_shader(struct gl_context
*ctx
, GLenum type
)
314 struct gl_shader
*sh
;
317 if (!_mesa_validate_shader_target(ctx
, type
)) {
318 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(%s)",
319 _mesa_enum_to_string(type
));
323 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
324 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
325 sh
= _mesa_new_shader(name
, _mesa_shader_enum_to_shader_stage(type
));
327 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, sh
);
328 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
335 create_shader_program(struct gl_context
*ctx
)
338 struct gl_shader_program
*shProg
;
340 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
342 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
344 shProg
= _mesa_new_shader_program(name
);
346 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, shProg
);
348 assert(shProg
->RefCount
== 1);
350 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
357 * Delete a shader program. Actually, just decrement the program's
358 * reference count and mark it as DeletePending.
359 * Used to implement glDeleteProgram() and glDeleteObjectARB().
362 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
365 * NOTE: deleting shaders/programs works a bit differently than
366 * texture objects (and buffer objects, etc). Shader/program
367 * handles/IDs exist in the hash table until the object is really
368 * deleted (refcount==0). With texture objects, the handle/ID is
369 * removed from the hash table in glDeleteTextures() while the tex
370 * object itself might linger until its refcount goes to zero.
372 struct gl_shader_program
*shProg
;
374 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
378 if (!shProg
->DeletePending
) {
379 shProg
->DeletePending
= GL_TRUE
;
381 /* effectively, decr shProg's refcount */
382 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
388 delete_shader(struct gl_context
*ctx
, GLuint shader
)
390 struct gl_shader
*sh
;
392 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
396 if (!sh
->DeletePending
) {
397 sh
->DeletePending
= GL_TRUE
;
399 /* effectively, decr sh's refcount */
400 _mesa_reference_shader(ctx
, &sh
, NULL
);
406 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
408 struct gl_shader_program
*shProg
;
412 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
416 n
= shProg
->NumShaders
;
418 for (i
= 0; i
< n
; i
++) {
419 if (shProg
->Shaders
[i
]->Name
== shader
) {
421 struct gl_shader
**newList
;
424 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
426 /* alloc new, smaller array */
427 newList
= malloc((n
- 1) * sizeof(struct gl_shader
*));
429 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
432 /* Copy old list entries to new list, skipping removed entry at [i] */
433 for (j
= 0; j
< i
; j
++) {
434 newList
[j
] = shProg
->Shaders
[j
];
437 newList
[j
++] = shProg
->Shaders
[i
];
440 /* Free old list and install new one */
441 free(shProg
->Shaders
);
442 shProg
->Shaders
= newList
;
443 shProg
->NumShaders
= n
- 1;
446 /* sanity check - make sure the new list's entries are sensible */
447 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
448 assert(shProg
->Shaders
[j
]->Stage
== MESA_SHADER_VERTEX
||
449 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_TESS_CTRL
||
450 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_TESS_EVAL
||
451 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_GEOMETRY
||
452 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_FRAGMENT
);
453 assert(shProg
->Shaders
[j
]->RefCount
> 0);
464 if (is_shader(ctx
, shader
) || is_program(ctx
, shader
))
465 err
= GL_INVALID_OPERATION
;
467 err
= GL_INVALID_VALUE
;
468 _mesa_error(ctx
, err
, "glDetachShader(shader)");
475 * Return list of shaders attached to shader program.
478 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
479 GLsizei
*count
, GLuint
*obj
)
481 struct gl_shader_program
*shProg
;
484 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetAttachedShaders(maxCount < 0)");
489 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
493 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
494 obj
[i
] = shProg
->Shaders
[i
]->Name
;
503 * glGetHandleARB() - return ID/name of currently bound shader program.
506 get_handle(struct gl_context
*ctx
, GLenum pname
)
508 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
509 if (ctx
->_Shader
->ActiveProgram
)
510 return ctx
->_Shader
->ActiveProgram
->Name
;
515 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
522 * Check if a geometry shader query is valid at this time. If not, report an
523 * error and return false.
525 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
527 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
528 * are queried for a program which has not been linked successfully, or
529 * which does not contain objects to form a geometry shader, then an
530 * INVALID_OPERATION error is generated."
533 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
535 if (shProg
->data
->LinkStatus
&&
536 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
540 _mesa_error(ctx
, GL_INVALID_OPERATION
,
541 "glGetProgramv(linked geometry shader required)");
547 * Check if a tessellation control shader query is valid at this time.
548 * If not, report an error and return false.
550 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
552 * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
553 * not been linked successfully, or which does not contain objects to
554 * form a tessellation control shader, then an INVALID_OPERATION error is
558 check_tcs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
560 if (shProg
->data
->LinkStatus
&&
561 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
] != NULL
) {
565 _mesa_error(ctx
, GL_INVALID_OPERATION
,
566 "glGetProgramv(linked tessellation control shader required)");
572 * Check if a tessellation evaluation shader query is valid at this time.
573 * If not, report an error and return false.
575 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
577 * "If any of the pname values in this paragraph are queried for a program
578 * which has not been linked successfully, or which does not contain
579 * objects to form a tessellation evaluation shader, then an
580 * INVALID_OPERATION error is generated."
584 check_tes_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
586 if (shProg
->data
->LinkStatus
&&
587 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
] != NULL
) {
591 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramv(linked tessellation "
592 "evaluation shader required)");
598 * glGetProgramiv() - get shader program state.
599 * Note that this is for GLSL shader programs, not ARB vertex/fragment
600 * programs (see glGetProgramivARB).
603 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
,
606 struct gl_shader_program
*shProg
607 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramiv(program)");
609 /* Is transform feedback available in this context?
612 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
613 || ctx
->API
== API_OPENGL_CORE
614 || _mesa_is_gles3(ctx
);
616 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
617 * and GL 3.2) are available in this context
619 const bool has_core_gs
= _mesa_has_geometry_shaders(ctx
);
620 const bool has_tess
= _mesa_has_tessellation(ctx
);
622 /* Are uniform buffer objects available in this context?
625 (ctx
->API
== API_OPENGL_COMPAT
&&
626 ctx
->Extensions
.ARB_uniform_buffer_object
)
627 || ctx
->API
== API_OPENGL_CORE
628 || _mesa_is_gles3(ctx
);
635 case GL_DELETE_STATUS
:
636 *params
= shProg
->DeletePending
;
639 *params
= shProg
->data
->LinkStatus
;
641 case GL_VALIDATE_STATUS
:
642 *params
= shProg
->data
->Validated
;
644 case GL_INFO_LOG_LENGTH
:
645 *params
= (shProg
->data
->InfoLog
&& shProg
->data
->InfoLog
[0] != '\0') ?
646 strlen(shProg
->data
->InfoLog
) + 1 : 0;
648 case GL_ATTACHED_SHADERS
:
649 *params
= shProg
->NumShaders
;
651 case GL_ACTIVE_ATTRIBUTES
:
652 *params
= _mesa_count_active_attribs(shProg
);
654 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
655 *params
= _mesa_longest_attribute_name_length(shProg
);
657 case GL_ACTIVE_UNIFORMS
: {
659 const unsigned num_uniforms
=
660 shProg
->data
->NumUniformStorage
- shProg
->data
->NumHiddenUniforms
;
661 for (*params
= 0, i
= 0; i
< num_uniforms
; i
++) {
662 if (!shProg
->data
->UniformStorage
[i
].is_shader_storage
)
667 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
670 const unsigned num_uniforms
=
671 shProg
->data
->NumUniformStorage
- shProg
->data
->NumHiddenUniforms
;
673 for (i
= 0; i
< num_uniforms
; i
++) {
674 if (shProg
->data
->UniformStorage
[i
].is_shader_storage
)
677 /* Add one for the terminating NUL character for a non-array, and
678 * 4 for the "[0]" and the NUL for an array.
680 const GLint len
= strlen(shProg
->data
->UniformStorage
[i
].name
) + 1 +
681 ((shProg
->data
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
690 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
693 *params
= shProg
->TransformFeedback
.NumVarying
;
695 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
701 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
702 /* Add one for the terminating NUL character.
705 strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
714 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
717 *params
= shProg
->TransformFeedback
.BufferMode
;
719 case GL_GEOMETRY_VERTICES_OUT
:
722 if (check_gs_query(ctx
, shProg
)) {
723 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
724 info
.Geom
.VerticesOut
;
727 case GL_GEOMETRY_SHADER_INVOCATIONS
:
728 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
730 if (check_gs_query(ctx
, shProg
)) {
731 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
732 info
.Geom
.Invocations
;
735 case GL_GEOMETRY_INPUT_TYPE
:
738 if (check_gs_query(ctx
, shProg
)) {
739 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
743 case GL_GEOMETRY_OUTPUT_TYPE
:
746 if (check_gs_query(ctx
, shProg
)) {
747 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
748 info
.Geom
.OutputType
;
751 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
758 for (i
= 0; i
< shProg
->data
->NumUniformBlocks
; i
++) {
759 /* Add one for the terminating NUL character.
761 const GLint len
= strlen(shProg
->data
->UniformBlocks
[i
].Name
) + 1;
770 case GL_ACTIVE_UNIFORM_BLOCKS
:
774 *params
= shProg
->data
->NumUniformBlocks
;
776 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
777 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
778 * only available with desktop OpenGL 3.0+ with the
779 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
781 * On desktop, we ignore the 3.0+ requirement because it is silly.
783 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
786 *params
= shProg
->BinaryRetreivableHint
;
788 case GL_PROGRAM_BINARY_LENGTH
:
791 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
792 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
795 *params
= shProg
->data
->NumAtomicBuffers
;
797 case GL_COMPUTE_WORK_GROUP_SIZE
: {
799 if (!_mesa_has_compute_shaders(ctx
))
801 if (!shProg
->data
->LinkStatus
) {
802 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
806 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
807 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
811 for (i
= 0; i
< 3; i
++)
812 params
[i
] = shProg
->Comp
.LocalSize
[i
];
815 case GL_PROGRAM_SEPARABLE
:
816 /* If the program has not been linked, return initial value 0. */
817 *params
= (shProg
->data
->LinkStatus
== GL_FALSE
) ? 0 : shProg
->SeparateShader
;
820 /* ARB_tessellation_shader */
821 case GL_TESS_CONTROL_OUTPUT_VERTICES
:
824 if (check_tcs_query(ctx
, shProg
)) {
825 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->
826 info
.TessCtrl
.VerticesOut
;
829 case GL_TESS_GEN_MODE
:
832 if (check_tes_query(ctx
, shProg
)) {
833 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
834 info
.TessEval
.PrimitiveMode
;
837 case GL_TESS_GEN_SPACING
:
840 if (check_tes_query(ctx
, shProg
)) {
841 const struct gl_linked_shader
*tes
=
842 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
];
843 switch (tes
->info
.TessEval
.Spacing
) {
844 case TESS_SPACING_EQUAL
:
847 case TESS_SPACING_FRACTIONAL_ODD
:
848 *params
= GL_FRACTIONAL_ODD
;
850 case TESS_SPACING_FRACTIONAL_EVEN
:
851 *params
= GL_FRACTIONAL_EVEN
;
853 case TESS_SPACING_UNSPECIFIED
:
859 case GL_TESS_GEN_VERTEX_ORDER
:
862 if (check_tes_query(ctx
, shProg
)) {
863 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
864 info
.TessEval
.VertexOrder
;
867 case GL_TESS_GEN_POINT_MODE
:
870 if (check_tes_query(ctx
, shProg
)) {
871 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
872 info
.TessEval
.PointMode
;
879 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
880 _mesa_enum_to_string(pname
));
885 * glGetShaderiv() - get GLSL shader state
888 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
890 struct gl_shader
*shader
=
891 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
899 *params
= shader
->Type
;
901 case GL_DELETE_STATUS
:
902 *params
= shader
->DeletePending
;
904 case GL_COMPILE_STATUS
:
905 *params
= shader
->CompileStatus
;
907 case GL_INFO_LOG_LENGTH
:
908 *params
= (shader
->InfoLog
&& shader
->InfoLog
[0] != '\0') ?
909 strlen(shader
->InfoLog
) + 1 : 0;
911 case GL_SHADER_SOURCE_LENGTH
:
912 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
915 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
922 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
923 GLsizei
*length
, GLchar
*infoLog
)
925 struct gl_shader_program
*shProg
;
927 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
928 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
930 * "If a negative number is provided where an argument of type sizei or
931 * sizeiptr is specified, an INVALID_VALUE error is generated."
934 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(bufSize < 0)");
938 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
939 "glGetProgramInfoLog(program)");
944 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->data
->InfoLog
);
949 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
950 GLsizei
*length
, GLchar
*infoLog
)
952 struct gl_shader
*sh
;
954 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
955 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
957 * "If a negative number is provided where an argument of type sizei or
958 * sizeiptr is specified, an INVALID_VALUE error is generated."
961 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(bufSize < 0)");
965 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderInfoLog(shader)");
970 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
975 * Return shader source code.
978 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
979 GLsizei
*length
, GLchar
*sourceOut
)
981 struct gl_shader
*sh
;
984 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderSource(bufSize < 0)");
988 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
992 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
997 * Set/replace shader source code. A helper function used by
998 * glShaderSource[ARB].
1001 shader_source(struct gl_shader
*sh
, const GLchar
*source
)
1005 /* free old shader source string and install new one */
1006 free((void *)sh
->Source
);
1007 sh
->Source
= source
;
1009 sh
->SourceChecksum
= util_hash_crc32(sh
->Source
, strlen(sh
->Source
));
1018 _mesa_compile_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
1024 /* If the user called glCompileShader without first calling
1025 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
1027 sh
->CompileStatus
= GL_FALSE
;
1029 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1030 _mesa_log("GLSL source for %s shader %d:\n",
1031 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1032 _mesa_log("%s\n", sh
->Source
);
1035 /* this call will set the shader->CompileStatus field to indicate if
1036 * compilation was successful.
1038 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
1040 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
1041 _mesa_write_shader_to_file(sh
);
1044 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1045 if (sh
->CompileStatus
) {
1047 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
1048 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
1050 _mesa_log("No GLSL IR for shader %d (shader may be from "
1051 "cache)\n", sh
->Name
);
1055 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
1057 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
1058 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
1059 _mesa_log("%s\n", sh
->InfoLog
);
1064 if (!sh
->CompileStatus
) {
1065 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1066 _mesa_log("GLSL source for %s shader %d:\n",
1067 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1068 _mesa_log("%s\n", sh
->Source
);
1069 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1072 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1073 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1074 sh
->Name
, sh
->InfoLog
);
1081 * Link a program's shaders.
1084 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1089 /* From the ARB_transform_feedback2 specification:
1090 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1091 * the name of a program being used by one or more transform feedback
1092 * objects, even if the objects are not currently bound or are paused."
1094 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1095 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1096 "glLinkProgram(transform feedback is using the program)");
1100 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1102 _mesa_glsl_link_shader(ctx
, shProg
);
1104 /* Capture .shader_test files. */
1105 const char *capture_path
= _mesa_get_shader_capture_path();
1106 if (shProg
->Name
!= 0 && shProg
->Name
!= ~0 && capture_path
!= NULL
) {
1108 char *filename
= ralloc_asprintf(NULL
, "%s/%u.shader_test",
1109 capture_path
, shProg
->Name
);
1110 file
= fopen(filename
, "w");
1112 fprintf(file
, "[require]\nGLSL%s >= %u.%02u\n",
1113 shProg
->IsES
? " ES" : "",
1114 shProg
->data
->Version
/ 100, shProg
->data
->Version
% 100);
1115 if (shProg
->SeparateShader
)
1116 fprintf(file
, "GL_ARB_separate_shader_objects\nSSO ENABLED\n");
1117 fprintf(file
, "\n");
1119 for (unsigned i
= 0; i
< shProg
->NumShaders
; i
++) {
1120 fprintf(file
, "[%s shader]\n%s\n",
1121 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1122 shProg
->Shaders
[i
]->Source
);
1126 _mesa_warning(ctx
, "Failed to open %s", filename
);
1129 ralloc_free(filename
);
1132 if (shProg
->data
->LinkStatus
== GL_FALSE
&&
1133 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1134 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1135 shProg
->Name
, shProg
->data
->InfoLog
);
1142 printf("Link %u shaders in program %u: %s\n",
1143 shProg
->NumShaders
, shProg
->Name
,
1144 shProg
->data
->LinkStatus
? "Success" : "Failed");
1146 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1147 printf(" shader %u, stage %u\n",
1148 shProg
->Shaders
[i
]->Name
,
1149 shProg
->Shaders
[i
]->Stage
);
1156 * Print basic shader info (for debug).
1159 print_shader_info(const struct gl_shader_program
*shProg
)
1163 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1164 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1166 printf(" %s shader %u, checksum %u\n",
1167 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1168 shProg
->Shaders
[i
]->Name
,
1169 shProg
->Shaders
[i
]->SourceChecksum
);
1171 printf(" %s shader %u\n",
1172 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1173 shProg
->Shaders
[i
]->Name
);
1176 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1177 printf(" vert prog %u\n",
1178 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1179 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1180 printf(" frag prog %u\n",
1181 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1182 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1183 printf(" geom prog %u\n",
1184 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1185 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1186 printf(" tesc prog %u\n",
1187 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1188 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1189 printf(" tese prog %u\n",
1190 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1195 * Use the named shader program for subsequent glUniform calls
1198 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1201 if ((shProg
!= NULL
) && !shProg
->data
->LinkStatus
) {
1202 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1203 "%s(program %u not linked)", caller
, shProg
->Name
);
1207 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1208 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1214 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1215 struct gl_shader_program
*shProg
,
1216 struct gl_pipeline_object
*shTarget
)
1218 struct gl_shader_program
**target
;
1220 target
= &shTarget
->CurrentProgram
[stage
];
1221 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1225 _mesa_shader_program_init_subroutine_defaults(ctx
, shProg
);
1227 if (*target
!= shProg
) {
1228 /* Program is current, flush it */
1229 if (shTarget
== ctx
->_Shader
) {
1230 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1233 /* If the shader is also bound as the current rendering shader, unbind
1234 * it from that binding point as well. This ensures that the correct
1235 * semantics of glDeleteProgram are maintained.
1238 case MESA_SHADER_VERTEX
:
1239 case MESA_SHADER_TESS_CTRL
:
1240 case MESA_SHADER_TESS_EVAL
:
1241 case MESA_SHADER_GEOMETRY
:
1242 case MESA_SHADER_COMPUTE
:
1243 /* Empty for now. */
1245 case MESA_SHADER_FRAGMENT
:
1246 if (*target
!= NULL
&&
1247 ((*target
)->_LinkedShaders
[MESA_SHADER_FRAGMENT
] &&
1248 (*target
)->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
==
1249 ctx
->_Shader
->_CurrentFragmentProgram
)) {
1250 _mesa_reference_program(ctx
,
1251 &ctx
->_Shader
->_CurrentFragmentProgram
,
1257 _mesa_reference_shader_program(ctx
, target
, shProg
);
1264 * Use the named shader program for subsequent rendering.
1267 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1270 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1271 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1272 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1277 * Do validation of the given shader program.
1278 * \param errMsg returns error message if validation fails.
1279 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1282 validate_shader_program(const struct gl_shader_program
*shProg
,
1285 if (!shProg
->data
->LinkStatus
) {
1289 /* From the GL spec, a program is invalid if any of these are true:
1291 any two active samplers in the current program object are of
1292 different types, but refer to the same texture image unit,
1294 any active sampler in the current program object refers to a texture
1295 image unit where fixed-function fragment processing accesses a
1296 texture target that does not match the sampler type, or
1298 the sum of the number of active samplers in the program and the
1299 number of texture image units enabled for fixed-function fragment
1300 processing exceeds the combined limit on the total number of texture
1301 image units allowed.
1305 * Check: any two active samplers in the current program object are of
1306 * different types, but refer to the same texture image unit,
1308 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1316 * Called via glValidateProgram()
1319 validate_program(struct gl_context
*ctx
, GLuint program
)
1321 struct gl_shader_program
*shProg
;
1322 char errMsg
[100] = "";
1324 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1329 shProg
->data
->Validated
= validate_shader_program(shProg
, errMsg
);
1330 if (!shProg
->data
->Validated
) {
1331 /* update info log */
1332 if (shProg
->data
->InfoLog
) {
1333 ralloc_free(shProg
->data
->InfoLog
);
1335 shProg
->data
->InfoLog
= ralloc_strdup(shProg
->data
, errMsg
);
1342 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1344 GET_CURRENT_CONTEXT(ctx
);
1345 attach_shader(ctx
, program
, shader
);
1350 _mesa_AttachShader(GLuint program
, GLuint shader
)
1352 GET_CURRENT_CONTEXT(ctx
);
1353 attach_shader(ctx
, program
, shader
);
1358 _mesa_CompileShader(GLuint shaderObj
)
1360 GET_CURRENT_CONTEXT(ctx
);
1361 if (MESA_VERBOSE
& VERBOSE_API
)
1362 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1363 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1364 "glCompileShader"));
1369 _mesa_CreateShader(GLenum type
)
1371 GET_CURRENT_CONTEXT(ctx
);
1372 if (MESA_VERBOSE
& VERBOSE_API
)
1373 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1374 return create_shader(ctx
, type
);
1378 GLhandleARB GLAPIENTRY
1379 _mesa_CreateShaderObjectARB(GLenum type
)
1381 GET_CURRENT_CONTEXT(ctx
);
1382 return create_shader(ctx
, type
);
1387 _mesa_CreateProgram(void)
1389 GET_CURRENT_CONTEXT(ctx
);
1390 if (MESA_VERBOSE
& VERBOSE_API
)
1391 _mesa_debug(ctx
, "glCreateProgram\n");
1392 return create_shader_program(ctx
);
1396 GLhandleARB GLAPIENTRY
1397 _mesa_CreateProgramObjectARB(void)
1399 GET_CURRENT_CONTEXT(ctx
);
1400 return create_shader_program(ctx
);
1405 _mesa_DeleteObjectARB(GLhandleARB obj
)
1407 if (MESA_VERBOSE
& VERBOSE_API
) {
1408 GET_CURRENT_CONTEXT(ctx
);
1409 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1413 GET_CURRENT_CONTEXT(ctx
);
1414 FLUSH_VERTICES(ctx
, 0);
1415 if (is_program(ctx
, obj
)) {
1416 delete_shader_program(ctx
, obj
);
1418 else if (is_shader(ctx
, obj
)) {
1419 delete_shader(ctx
, obj
);
1429 _mesa_DeleteProgram(GLuint name
)
1432 GET_CURRENT_CONTEXT(ctx
);
1433 FLUSH_VERTICES(ctx
, 0);
1434 delete_shader_program(ctx
, name
);
1440 _mesa_DeleteShader(GLuint name
)
1443 GET_CURRENT_CONTEXT(ctx
);
1444 FLUSH_VERTICES(ctx
, 0);
1445 delete_shader(ctx
, name
);
1451 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1453 GET_CURRENT_CONTEXT(ctx
);
1454 detach_shader(ctx
, program
, shader
);
1459 _mesa_DetachShader(GLuint program
, GLuint shader
)
1461 GET_CURRENT_CONTEXT(ctx
);
1462 detach_shader(ctx
, program
, shader
);
1467 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1468 GLsizei
* count
, GLhandleARB
* obj
)
1470 GET_CURRENT_CONTEXT(ctx
);
1471 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1476 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1477 GLsizei
*count
, GLuint
*obj
)
1479 GET_CURRENT_CONTEXT(ctx
);
1480 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1485 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1486 GLcharARB
* infoLog
)
1488 GET_CURRENT_CONTEXT(ctx
);
1489 if (is_program(ctx
, object
)) {
1490 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1492 else if (is_shader(ctx
, object
)) {
1493 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1496 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1502 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1504 GET_CURRENT_CONTEXT(ctx
);
1505 /* Implement in terms of GetProgramiv, GetShaderiv */
1506 if (is_program(ctx
, object
)) {
1507 if (pname
== GL_OBJECT_TYPE_ARB
) {
1508 *params
= GL_PROGRAM_OBJECT_ARB
;
1511 get_programiv(ctx
, object
, pname
, params
);
1514 else if (is_shader(ctx
, object
)) {
1515 if (pname
== GL_OBJECT_TYPE_ARB
) {
1516 *params
= GL_SHADER_OBJECT_ARB
;
1519 get_shaderiv(ctx
, object
, pname
, params
);
1523 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1529 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1532 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1533 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1534 params
[0] = (GLfloat
) iparams
[0];
1539 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1541 GET_CURRENT_CONTEXT(ctx
);
1542 get_programiv(ctx
, program
, pname
, params
);
1547 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1549 GET_CURRENT_CONTEXT(ctx
);
1550 get_shaderiv(ctx
, shader
, pname
, params
);
1555 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1556 GLsizei
*length
, GLchar
*infoLog
)
1558 GET_CURRENT_CONTEXT(ctx
);
1559 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1564 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1565 GLsizei
*length
, GLchar
*infoLog
)
1567 GET_CURRENT_CONTEXT(ctx
);
1568 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1573 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1574 GLsizei
*length
, GLchar
*sourceOut
)
1576 GET_CURRENT_CONTEXT(ctx
);
1577 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1581 GLhandleARB GLAPIENTRY
1582 _mesa_GetHandleARB(GLenum pname
)
1584 GET_CURRENT_CONTEXT(ctx
);
1585 return get_handle(ctx
, pname
);
1589 GLboolean GLAPIENTRY
1590 _mesa_IsProgram(GLuint name
)
1592 GET_CURRENT_CONTEXT(ctx
);
1593 return is_program(ctx
, name
);
1597 GLboolean GLAPIENTRY
1598 _mesa_IsShader(GLuint name
)
1600 GET_CURRENT_CONTEXT(ctx
);
1601 return is_shader(ctx
, name
);
1606 _mesa_LinkProgram(GLuint programObj
)
1608 GET_CURRENT_CONTEXT(ctx
);
1609 if (MESA_VERBOSE
& VERBOSE_API
)
1610 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1611 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1615 #if defined(HAVE_SHA1)
1617 * Generate a SHA-1 hash value string for given source string.
1620 generate_sha1(const char *source
, char sha_str
[64])
1622 unsigned char sha
[20];
1623 _mesa_sha1_compute(source
, strlen(source
), sha
);
1624 _mesa_sha1_format(sha_str
, sha
);
1628 * Construct a full path for shader replacement functionality using
1631 * <path>/<stage prefix>_<CHECKSUM>.glsl
1634 construct_name(const gl_shader_stage stage
, const char *source
,
1638 static const char *types
[] = {
1639 "VS", "TC", "TE", "GS", "FS", "CS",
1642 generate_sha1(source
, sha
);
1643 return ralloc_asprintf(NULL
, "%s/%s_%s.glsl", path
, types
[stage
], sha
);
1647 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1650 dump_shader(const gl_shader_stage stage
, const char *source
)
1652 static bool path_exists
= true;
1659 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1661 path_exists
= false;
1665 char *name
= construct_name(stage
, source
, dump_path
);
1667 f
= fopen(name
, "w");
1672 GET_CURRENT_CONTEXT(ctx
);
1673 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1680 * Read shader source code from a file.
1681 * Useful for debugging to override an app's shader.
1684 read_shader(const gl_shader_stage stage
, const char *source
)
1687 static bool path_exists
= true;
1688 int len
, shader_size
= 0;
1695 read_path
= getenv("MESA_SHADER_READ_PATH");
1697 path_exists
= false;
1701 char *name
= construct_name(stage
, source
, read_path
);
1702 f
= fopen(name
, "r");
1707 /* allocate enough room for the entire shader */
1708 fseek(f
, 0, SEEK_END
);
1709 shader_size
= ftell(f
);
1711 assert(shader_size
);
1713 /* add one for terminating zero */
1716 buffer
= malloc(shader_size
);
1719 len
= fread(buffer
, 1, shader_size
, f
);
1726 #endif /* HAVE_SHA1 */
1729 * Called via glShaderSource() and glShaderSourceARB() API functions.
1730 * Basically, concatenate the source code strings into one long string
1731 * and pass it to _mesa_shader_source().
1734 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1735 const GLchar
* const * string
, const GLint
* length
)
1737 GET_CURRENT_CONTEXT(ctx
);
1739 GLsizei i
, totalLength
;
1741 struct gl_shader
*sh
;
1743 #if defined(HAVE_SHA1)
1744 GLcharARB
*replacement
;
1745 #endif /* HAVE_SHA1 */
1747 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1751 if (string
== NULL
) {
1752 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1757 * This array holds offsets of where the appropriate string ends, thus the
1758 * last element will be set to the total length of the source code.
1760 offsets
= malloc(count
* sizeof(GLint
));
1761 if (offsets
== NULL
) {
1762 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1766 for (i
= 0; i
< count
; i
++) {
1767 if (string
[i
] == NULL
) {
1768 free((GLvoid
*) offsets
);
1769 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1770 "glShaderSourceARB(null string)");
1773 if (length
== NULL
|| length
[i
] < 0)
1774 offsets
[i
] = strlen(string
[i
]);
1776 offsets
[i
] = length
[i
];
1777 /* accumulate string lengths */
1779 offsets
[i
] += offsets
[i
- 1];
1782 /* Total length of source string is sum off all strings plus two.
1783 * One extra byte for terminating zero, another extra byte to silence
1784 * valgrind warnings in the parser/grammer code.
1786 totalLength
= offsets
[count
- 1] + 2;
1787 source
= malloc(totalLength
* sizeof(GLcharARB
));
1788 if (source
== NULL
) {
1789 free((GLvoid
*) offsets
);
1790 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1794 for (i
= 0; i
< count
; i
++) {
1795 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1796 memcpy(source
+ start
, string
[i
],
1797 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1799 source
[totalLength
- 1] = '\0';
1800 source
[totalLength
- 2] = '\0';
1802 #if defined(HAVE_SHA1)
1803 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1804 * if corresponding entry found from MESA_SHADER_READ_PATH.
1806 dump_shader(sh
->Stage
, source
);
1808 replacement
= read_shader(sh
->Stage
, source
);
1811 source
= replacement
;
1813 #endif /* HAVE_SHA1 */
1815 shader_source(sh
, source
);
1822 _mesa_UseProgram(GLuint program
)
1824 GET_CURRENT_CONTEXT(ctx
);
1825 struct gl_shader_program
*shProg
;
1827 if (MESA_VERBOSE
& VERBOSE_API
)
1828 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1830 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1831 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1832 "glUseProgram(transform feedback active)");
1837 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1841 if (!shProg
->data
->LinkStatus
) {
1842 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1843 "glUseProgram(program %u not linked)", program
);
1848 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1849 print_shader_info(shProg
);
1856 /* The ARB_separate_shader_object spec says:
1858 * "The executable code for an individual shader stage is taken from
1859 * the current program for that stage. If there is a current program
1860 * object established by UseProgram, that program is considered current
1861 * for all stages. Otherwise, if there is a bound program pipeline
1862 * object (section 2.14.PPO), the program bound to the appropriate
1863 * stage of the pipeline object is considered current."
1866 /* Attach shader state to the binding point */
1867 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1868 /* Update the program */
1869 _mesa_use_program(ctx
, shProg
);
1871 /* Must be done first: detach the progam */
1872 _mesa_use_program(ctx
, shProg
);
1873 /* Unattach shader_state binding point */
1874 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1875 /* If a pipeline was bound, rebind it */
1876 if (ctx
->Pipeline
.Current
) {
1877 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1884 _mesa_ValidateProgram(GLuint program
)
1886 GET_CURRENT_CONTEXT(ctx
);
1887 validate_program(ctx
, program
);
1892 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1895 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1896 GLint
* range
, GLint
* precision
)
1898 const struct gl_program_constants
*limits
;
1899 const struct gl_precision
*p
;
1900 GET_CURRENT_CONTEXT(ctx
);
1902 switch (shadertype
) {
1903 case GL_VERTEX_SHADER
:
1904 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1906 case GL_FRAGMENT_SHADER
:
1907 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1910 _mesa_error(ctx
, GL_INVALID_ENUM
,
1911 "glGetShaderPrecisionFormat(shadertype)");
1915 switch (precisiontype
) {
1917 p
= &limits
->LowFloat
;
1919 case GL_MEDIUM_FLOAT
:
1920 p
= &limits
->MediumFloat
;
1923 p
= &limits
->HighFloat
;
1926 p
= &limits
->LowInt
;
1929 p
= &limits
->MediumInt
;
1932 p
= &limits
->HighInt
;
1935 _mesa_error(ctx
, GL_INVALID_ENUM
,
1936 "glGetShaderPrecisionFormat(precisiontype)");
1940 range
[0] = p
->RangeMin
;
1941 range
[1] = p
->RangeMax
;
1942 precision
[0] = p
->Precision
;
1947 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1950 _mesa_ReleaseShaderCompiler(void)
1952 _mesa_destroy_shader_compiler_caches();
1957 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1960 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1961 const void* binary
, GLint length
)
1963 GET_CURRENT_CONTEXT(ctx
);
1965 (void) binaryformat
;
1968 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1969 * page 88 of the OpenGL 4.5 specs state:
1971 * "An INVALID_VALUE error is generated if count or length is negative.
1972 * An INVALID_ENUM error is generated if binaryformat is not a supported
1973 * format returned in SHADER_BINARY_FORMATS."
1975 if (n
< 0 || length
< 0) {
1976 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1980 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1985 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1986 GLenum
*binaryFormat
, GLvoid
*binary
)
1988 struct gl_shader_program
*shProg
;
1989 GLsizei length_dummy
;
1990 GET_CURRENT_CONTEXT(ctx
);
1993 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1997 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
2001 /* The ARB_get_program_binary spec says:
2003 * "If <length> is NULL, then no length is returned."
2005 * Ensure that length always points to valid storage to avoid multiple NULL
2006 * pointer checks below.
2009 length
= &length_dummy
;
2012 /* The ARB_get_program_binary spec says:
2014 * "When a program object's LINK_STATUS is FALSE, its program binary
2015 * length is zero, and a call to GetProgramBinary will generate an
2016 * INVALID_OPERATION error.
2018 if (!shProg
->data
->LinkStatus
) {
2019 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2020 "glGetProgramBinary(program %u not linked)",
2027 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2028 "glGetProgramBinary(driver supports zero binary formats)");
2030 (void) binaryFormat
;
2035 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
2036 const GLvoid
*binary
, GLsizei length
)
2038 struct gl_shader_program
*shProg
;
2039 GET_CURRENT_CONTEXT(ctx
);
2041 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
2045 (void) binaryFormat
;
2048 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2050 * "If a negative number is provided where an argument of type sizei or
2051 * sizeiptr is specified, an INVALID_VALUE error is generated."
2054 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
2058 /* The ARB_get_program_binary spec says:
2060 * "<binaryFormat> and <binary> must be those returned by a previous
2061 * call to GetProgramBinary, and <length> must be the length of the
2062 * program binary as returned by GetProgramBinary or GetProgramiv with
2063 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2064 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2067 * Since any value of binaryFormat passed "is not one of those specified as
2068 * allowable for [this] command, an INVALID_ENUM error is generated."
2070 shProg
->data
->LinkStatus
= GL_FALSE
;
2071 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
2076 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
2078 struct gl_shader_program
*shProg
;
2079 GET_CURRENT_CONTEXT(ctx
);
2081 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
2082 "glProgramParameteri");
2087 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
2088 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2089 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2090 * even be in the dispatch table, so we shouldn't need to expclicitly
2093 * On desktop, we ignore the 3.0+ requirement because it is silly.
2096 /* The ARB_get_program_binary extension spec says:
2098 * "An INVALID_VALUE error is generated if the <value> argument to
2099 * ProgramParameteri is not TRUE or FALSE."
2101 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2105 /* No need to notify the driver. Any changes will actually take effect
2106 * the next time the shader is linked.
2108 * The ARB_get_program_binary extension spec says:
2110 * "To indicate that a program binary is likely to be retrieved,
2111 * ProgramParameteri should be called with <pname>
2112 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2113 * will not be in effect until the next time LinkProgram or
2114 * ProgramBinary has been called successfully."
2116 * The resloution of issue 9 in the extension spec also says:
2118 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2119 * to indicate to the GL implementation that this program will
2120 * likely be saved with GetProgramBinary at some point. This will
2121 * give the GL implementation the opportunity to track any state
2122 * changes made to the program before being saved such that when it
2123 * is loaded again a recompile can be avoided."
2125 shProg
->BinaryRetreivableHint
= value
;
2128 case GL_PROGRAM_SEPARABLE
:
2129 /* Spec imply that the behavior is the same as ARB_get_program_binary
2130 * Chapter 7.3 Program Objects
2132 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2135 shProg
->SeparateShader
= value
;
2139 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2140 _mesa_enum_to_string(pname
));
2145 _mesa_error(ctx
, GL_INVALID_VALUE
,
2146 "glProgramParameteri(pname=%s, value=%d): "
2147 "value must be 0 or 1.",
2148 _mesa_enum_to_string(pname
),
2154 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2155 struct gl_shader_program
*shProg
,
2156 struct gl_pipeline_object
*shTarget
)
2158 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2159 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2164 * Copy program-specific data generated by linking from the gl_shader_program
2165 * object to the gl_program object referred to by the gl_linked_shader.
2167 * This function expects _mesa_reference_program() to have been previously
2168 * called setting the gl_linked_shaders program reference.
2171 _mesa_copy_linked_program_data(const struct gl_shader_program
*src
,
2172 struct gl_linked_shader
*dst_sh
)
2174 assert(dst_sh
->Program
);
2176 struct gl_program
*dst
= dst_sh
->Program
;
2178 dst
->info
.separate_shader
= src
->SeparateShader
;
2180 switch (dst_sh
->Stage
) {
2181 case MESA_SHADER_VERTEX
:
2182 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2183 dst
->CullDistanceArraySize
= src
->Vert
.CullDistanceArraySize
;
2185 case MESA_SHADER_TESS_CTRL
: {
2186 dst
->info
.tess
.tcs_vertices_out
= dst_sh
->info
.TessCtrl
.VerticesOut
;
2189 case MESA_SHADER_TESS_EVAL
: {
2190 dst
->info
.tess
.primitive_mode
= dst_sh
->info
.TessEval
.PrimitiveMode
;
2191 dst
->info
.tess
.spacing
= dst_sh
->info
.TessEval
.Spacing
;
2192 dst
->info
.tess
.ccw
= dst_sh
->info
.TessEval
.VertexOrder
== GL_CCW
;
2193 dst
->info
.tess
.point_mode
= dst_sh
->info
.TessEval
.PointMode
;
2194 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2195 dst
->CullDistanceArraySize
= src
->TessEval
.CullDistanceArraySize
;
2198 case MESA_SHADER_GEOMETRY
: {
2199 dst
->info
.gs
.vertices_in
= src
->Geom
.VerticesIn
;
2200 dst
->info
.gs
.vertices_out
= dst_sh
->info
.Geom
.VerticesOut
;
2201 dst
->info
.gs
.invocations
= dst_sh
->info
.Geom
.Invocations
;
2202 dst
->info
.gs
.input_primitive
= dst_sh
->info
.Geom
.InputType
;
2203 dst
->info
.gs
.output_primitive
= dst_sh
->info
.Geom
.OutputType
;
2204 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2205 dst
->CullDistanceArraySize
= src
->Geom
.CullDistanceArraySize
;
2206 dst
->info
.gs
.uses_end_primitive
= src
->Geom
.UsesEndPrimitive
;
2207 dst
->info
.gs
.uses_streams
= src
->Geom
.UsesStreams
;
2210 case MESA_SHADER_FRAGMENT
: {
2211 dst
->info
.fs
.depth_layout
= src
->FragDepthLayout
;
2212 dst
->info
.fs
.early_fragment_tests
= dst_sh
->info
.EarlyFragmentTests
;
2213 dst
->info
.fs
.inner_coverage
= dst_sh
->info
.InnerCoverage
;
2214 dst
->info
.fs
.post_depth_coverage
= dst_sh
->info
.PostDepthCoverage
;
2217 case MESA_SHADER_COMPUTE
: {
2218 for (int i
= 0; i
< 3; i
++)
2219 dst
->info
.cs
.local_size
[i
] = src
->Comp
.LocalSize
[i
];
2220 dst
->info
.cs
.shared_size
= src
->Comp
.SharedSize
;
2221 dst
->info
.cs
.local_size_variable
= src
->Comp
.LocalSizeVariable
;
2230 * ARB_separate_shader_objects: Compile & Link Program
2233 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2234 const GLchar
* const *strings
)
2236 GET_CURRENT_CONTEXT(ctx
);
2238 const GLuint shader
= create_shader(ctx
, type
);
2242 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2243 * GL_INVALID_VALUE should be generated if count < 0
2246 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2251 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2253 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2254 _mesa_compile_shader(ctx
, sh
);
2256 program
= create_shader_program(ctx
);
2258 struct gl_shader_program
*shProg
;
2259 GLint compiled
= GL_FALSE
;
2261 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2263 shProg
->SeparateShader
= GL_TRUE
;
2265 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2267 attach_shader(ctx
, program
, shader
);
2268 _mesa_link_program(ctx
, shProg
);
2269 detach_shader(ctx
, program
, shader
);
2273 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2274 append
-error
-to
-info
-log
;
2275 shProg
->data
->LinkStatus
= GL_FALSE
;
2280 ralloc_strcat(&shProg
->data
->InfoLog
, sh
->InfoLog
);
2283 delete_shader(ctx
, shader
);
2291 * For GL_ARB_tessellation_shader
2293 extern void GLAPIENTRY
2294 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2296 GET_CURRENT_CONTEXT(ctx
);
2298 if (!_mesa_has_tessellation(ctx
)) {
2299 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2303 if (pname
!= GL_PATCH_VERTICES
) {
2304 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2308 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2309 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2313 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2317 extern void GLAPIENTRY
2318 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2320 GET_CURRENT_CONTEXT(ctx
);
2322 if (!_mesa_has_tessellation(ctx
)) {
2323 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2328 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2329 FLUSH_VERTICES(ctx
, 0);
2330 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2331 4 * sizeof(GLfloat
));
2332 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2334 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2335 FLUSH_VERTICES(ctx
, 0);
2336 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2337 2 * sizeof(GLfloat
));
2338 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2341 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2347 * ARB_shader_subroutine
2350 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2353 GET_CURRENT_CONTEXT(ctx
);
2354 const char *api_name
= "glGetSubroutineUniformLocation";
2355 struct gl_shader_program
*shProg
;
2356 GLenum resource_type
;
2357 gl_shader_stage stage
;
2359 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2360 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2364 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2365 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2369 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2373 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2374 if (!shProg
->_LinkedShaders
[stage
]) {
2375 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2379 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2380 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2384 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2387 GET_CURRENT_CONTEXT(ctx
);
2388 const char *api_name
= "glGetSubroutineIndex";
2389 struct gl_shader_program
*shProg
;
2390 struct gl_program_resource
*res
;
2391 GLenum resource_type
;
2392 gl_shader_stage stage
;
2394 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2395 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2399 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2400 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2404 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2408 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2409 if (!shProg
->_LinkedShaders
[stage
]) {
2410 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2414 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2415 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2420 return _mesa_program_resource_index(shProg
, res
);
2425 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2426 GLuint index
, GLenum pname
, GLint
*values
)
2428 GET_CURRENT_CONTEXT(ctx
);
2429 const char *api_name
= "glGetActiveSubroutineUniformiv";
2430 struct gl_shader_program
*shProg
;
2431 struct gl_linked_shader
*sh
;
2432 gl_shader_stage stage
;
2433 struct gl_program_resource
*res
;
2434 const struct gl_uniform_storage
*uni
;
2435 GLenum resource_type
;
2438 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2439 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2443 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2444 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2448 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2452 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2453 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2455 sh
= shProg
->_LinkedShaders
[stage
];
2457 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2461 struct gl_program
*p
= shProg
->_LinkedShaders
[stage
]->Program
;
2462 if (index
>= p
->sh
.NumSubroutineUniforms
) {
2463 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2468 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2469 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2472 values
[0] = uni
->num_compatible_subroutines
;
2476 case GL_COMPATIBLE_SUBROUTINES
: {
2477 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2481 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2482 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2483 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2484 if (fn
->types
[j
] == uni
->type
) {
2485 values
[count
++] = i
;
2493 case GL_UNIFORM_SIZE
:
2494 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2497 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2500 case GL_UNIFORM_NAME_LENGTH
:
2501 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2503 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2504 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2508 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2515 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2516 GLuint index
, GLsizei bufsize
,
2517 GLsizei
*length
, GLchar
*name
)
2519 GET_CURRENT_CONTEXT(ctx
);
2520 const char *api_name
= "glGetActiveSubroutineUniformName";
2521 struct gl_shader_program
*shProg
;
2522 GLenum resource_type
;
2523 gl_shader_stage stage
;
2525 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2526 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2530 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2531 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2535 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2539 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2540 if (!shProg
->_LinkedShaders
[stage
]) {
2541 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2545 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2546 /* get program resource name */
2547 _mesa_get_program_resource_name(shProg
, resource_type
,
2549 length
, name
, api_name
);
2554 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2555 GLuint index
, GLsizei bufsize
,
2556 GLsizei
*length
, GLchar
*name
)
2558 GET_CURRENT_CONTEXT(ctx
);
2559 const char *api_name
= "glGetActiveSubroutineName";
2560 struct gl_shader_program
*shProg
;
2561 GLenum resource_type
;
2562 gl_shader_stage stage
;
2564 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2565 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2569 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2570 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2574 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2578 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2579 if (!shProg
->_LinkedShaders
[stage
]) {
2580 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2583 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2584 _mesa_get_program_resource_name(shProg
, resource_type
,
2586 length
, name
, api_name
);
2590 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2591 const GLuint
*indices
)
2593 GET_CURRENT_CONTEXT(ctx
);
2594 const char *api_name
= "glUniformSubroutinesuiv";
2595 struct gl_shader_program
*shProg
;
2596 struct gl_linked_shader
*sh
;
2597 gl_shader_stage stage
;
2600 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2601 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2605 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2606 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2610 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2611 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2613 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2617 sh
= shProg
->_LinkedShaders
[stage
];
2619 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2623 struct gl_program
*p
= shProg
->_LinkedShaders
[stage
]->Program
;
2624 if (count
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2625 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2631 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2637 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2640 for (j
= i
; j
< i
+ uni_count
; j
++) {
2641 struct gl_subroutine_function
*subfn
= NULL
;
2642 if (indices
[j
] > p
->sh
.MaxSubroutineFunctionIndex
) {
2643 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2647 for (f
= 0; f
< p
->sh
.NumSubroutineFunctions
; f
++) {
2648 if (p
->sh
.SubroutineFunctions
[f
].index
== indices
[j
])
2649 subfn
= &p
->sh
.SubroutineFunctions
[f
];
2656 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2657 if (subfn
->types
[k
] == uni
->type
)
2660 if (k
== subfn
->num_compat_types
) {
2661 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2665 ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[j
] = indices
[j
];
2670 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2675 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2678 GET_CURRENT_CONTEXT(ctx
);
2679 const char *api_name
= "glGetUniformSubroutineuiv";
2680 struct gl_shader_program
*shProg
;
2681 struct gl_linked_shader
*sh
;
2682 gl_shader_stage stage
;
2684 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2685 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2689 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2690 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2694 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2695 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2697 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2701 sh
= shProg
->_LinkedShaders
[stage
];
2703 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2707 struct gl_program
*p
= sh
->Program
;
2708 if (location
>= p
->sh
.NumSubroutineUniformRemapTable
) {
2709 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2713 *params
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[location
];
2718 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2719 GLenum pname
, GLint
*values
)
2721 GET_CURRENT_CONTEXT(ctx
);
2722 const char *api_name
= "glGetProgramStageiv";
2723 struct gl_shader_program
*shProg
;
2724 struct gl_linked_shader
*sh
;
2725 gl_shader_stage stage
;
2727 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2728 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2732 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2733 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2737 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2741 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2742 sh
= shProg
->_LinkedShaders
[stage
];
2744 /* ARB_shader_subroutine doesn't ask the program to be linked, or list any
2745 * INVALID_OPERATION in the case of not be linked.
2747 * And for some pnames, like GL_ACTIVE_SUBROUTINE_UNIFORMS, you can ask the
2748 * same info using other specs (ARB_program_interface_query), without the
2749 * need of the program to be linked, being the value for that case 0.
2751 * But at the same time, some other methods require the program to be
2752 * linked for pname related to locations, so it would be inconsistent to
2753 * not do the same here. So we are:
2754 * * Return GL_INVALID_OPERATION if not linked only for locations.
2755 * * Setting a default value of 0, to be returned if not linked.
2759 if (pname
== GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
) {
2760 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2765 struct gl_program
*p
= sh
->Program
;
2767 case GL_ACTIVE_SUBROUTINES
:
2768 values
[0] = p
->sh
.NumSubroutineFunctions
;
2770 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2771 values
[0] = p
->sh
.NumSubroutineUniformRemapTable
;
2773 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2774 values
[0] = p
->sh
.NumSubroutineUniforms
;
2776 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2780 GLenum resource_type
;
2781 struct gl_program_resource
*res
;
2783 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2784 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2785 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2787 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2792 values
[0] = max_len
;
2795 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2799 GLenum resource_type
;
2800 struct gl_program_resource
*res
;
2802 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2803 for (i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2804 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2806 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2807 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2813 values
[0] = max_len
;
2817 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2824 find_compat_subroutine(struct gl_program
*p
, const struct glsl_type
*type
)
2828 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2829 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2830 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2831 if (fn
->types
[j
] == type
)
2839 _mesa_shader_write_subroutine_index(struct gl_context
*ctx
,
2840 struct gl_program
*p
)
2844 if (p
->sh
.NumSubroutineUniformRemapTable
== 0)
2849 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2858 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2859 for (j
= 0; j
< uni_count
; j
++) {
2860 val
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[i
+ j
];
2861 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2864 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2866 } while(i
< p
->sh
.NumSubroutineUniformRemapTable
);
2870 _mesa_shader_write_subroutine_indices(struct gl_context
*ctx
,
2871 gl_shader_stage stage
)
2873 if (ctx
->_Shader
->CurrentProgram
[stage
] &&
2874 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
])
2875 _mesa_shader_write_subroutine_index(ctx
,
2876 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
]->Program
);
2880 _mesa_program_init_subroutine_defaults(struct gl_context
*ctx
,
2881 struct gl_program
*p
)
2885 struct gl_subroutine_index_binding
*binding
= &ctx
->SubroutineIndex
[p
->info
.stage
];
2886 if (binding
->NumIndex
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2887 binding
->IndexPtr
= realloc(binding
->IndexPtr
,
2888 p
->sh
.NumSubroutineUniformRemapTable
* (sizeof(GLuint
)));
2889 binding
->NumIndex
= p
->sh
.NumSubroutineUniformRemapTable
;
2892 for (int i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2893 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2898 binding
->IndexPtr
[i
] = find_compat_subroutine(p
, uni
->type
);
2903 _mesa_shader_program_init_subroutine_defaults(struct gl_context
*ctx
,
2904 struct gl_shader_program
*shProg
)
2911 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2912 if (!shProg
->_LinkedShaders
[i
])
2915 _mesa_program_init_subroutine_defaults(ctx
, shProg
->_LinkedShaders
[i
]->Program
);