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
,
1616 * Generate a SHA-1 hash value string for given source string.
1619 generate_sha1(const char *source
, char sha_str
[64])
1621 unsigned char sha
[20];
1622 _mesa_sha1_compute(source
, strlen(source
), sha
);
1623 _mesa_sha1_format(sha_str
, sha
);
1627 * Construct a full path for shader replacement functionality using
1630 * <path>/<stage prefix>_<CHECKSUM>.glsl
1633 construct_name(const gl_shader_stage stage
, const char *source
,
1637 static const char *types
[] = {
1638 "VS", "TC", "TE", "GS", "FS", "CS",
1641 generate_sha1(source
, sha
);
1642 return ralloc_asprintf(NULL
, "%s/%s_%s.glsl", path
, types
[stage
], sha
);
1646 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1649 dump_shader(const gl_shader_stage stage
, const char *source
)
1651 static bool path_exists
= true;
1658 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1660 path_exists
= false;
1664 char *name
= construct_name(stage
, source
, dump_path
);
1666 f
= fopen(name
, "w");
1671 GET_CURRENT_CONTEXT(ctx
);
1672 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1679 * Read shader source code from a file.
1680 * Useful for debugging to override an app's shader.
1683 read_shader(const gl_shader_stage stage
, const char *source
)
1686 static bool path_exists
= true;
1687 int len
, shader_size
= 0;
1694 read_path
= getenv("MESA_SHADER_READ_PATH");
1696 path_exists
= false;
1700 char *name
= construct_name(stage
, source
, read_path
);
1701 f
= fopen(name
, "r");
1706 /* allocate enough room for the entire shader */
1707 fseek(f
, 0, SEEK_END
);
1708 shader_size
= ftell(f
);
1710 assert(shader_size
);
1712 /* add one for terminating zero */
1715 buffer
= malloc(shader_size
);
1718 len
= fread(buffer
, 1, shader_size
, f
);
1727 * Called via glShaderSource() and glShaderSourceARB() API functions.
1728 * Basically, concatenate the source code strings into one long string
1729 * and pass it to _mesa_shader_source().
1732 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1733 const GLchar
* const * string
, const GLint
* length
)
1735 GET_CURRENT_CONTEXT(ctx
);
1737 GLsizei i
, totalLength
;
1739 struct gl_shader
*sh
;
1741 GLcharARB
*replacement
;
1743 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1747 if (string
== NULL
) {
1748 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1753 * This array holds offsets of where the appropriate string ends, thus the
1754 * last element will be set to the total length of the source code.
1756 offsets
= malloc(count
* sizeof(GLint
));
1757 if (offsets
== NULL
) {
1758 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1762 for (i
= 0; i
< count
; i
++) {
1763 if (string
[i
] == NULL
) {
1764 free((GLvoid
*) offsets
);
1765 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1766 "glShaderSourceARB(null string)");
1769 if (length
== NULL
|| length
[i
] < 0)
1770 offsets
[i
] = strlen(string
[i
]);
1772 offsets
[i
] = length
[i
];
1773 /* accumulate string lengths */
1775 offsets
[i
] += offsets
[i
- 1];
1778 /* Total length of source string is sum off all strings plus two.
1779 * One extra byte for terminating zero, another extra byte to silence
1780 * valgrind warnings in the parser/grammer code.
1782 totalLength
= offsets
[count
- 1] + 2;
1783 source
= malloc(totalLength
* sizeof(GLcharARB
));
1784 if (source
== NULL
) {
1785 free((GLvoid
*) offsets
);
1786 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1790 for (i
= 0; i
< count
; i
++) {
1791 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1792 memcpy(source
+ start
, string
[i
],
1793 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1795 source
[totalLength
- 1] = '\0';
1796 source
[totalLength
- 2] = '\0';
1798 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1799 * if corresponding entry found from MESA_SHADER_READ_PATH.
1801 dump_shader(sh
->Stage
, source
);
1803 replacement
= read_shader(sh
->Stage
, source
);
1806 source
= replacement
;
1809 shader_source(sh
, source
);
1816 _mesa_UseProgram(GLuint program
)
1818 GET_CURRENT_CONTEXT(ctx
);
1819 struct gl_shader_program
*shProg
;
1821 if (MESA_VERBOSE
& VERBOSE_API
)
1822 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1824 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1825 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1826 "glUseProgram(transform feedback active)");
1831 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1835 if (!shProg
->data
->LinkStatus
) {
1836 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1837 "glUseProgram(program %u not linked)", program
);
1842 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1843 print_shader_info(shProg
);
1850 /* The ARB_separate_shader_object spec says:
1852 * "The executable code for an individual shader stage is taken from
1853 * the current program for that stage. If there is a current program
1854 * object established by UseProgram, that program is considered current
1855 * for all stages. Otherwise, if there is a bound program pipeline
1856 * object (section 2.14.PPO), the program bound to the appropriate
1857 * stage of the pipeline object is considered current."
1860 /* Attach shader state to the binding point */
1861 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1862 /* Update the program */
1863 _mesa_use_program(ctx
, shProg
);
1865 /* Must be done first: detach the progam */
1866 _mesa_use_program(ctx
, shProg
);
1867 /* Unattach shader_state binding point */
1868 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1869 /* If a pipeline was bound, rebind it */
1870 if (ctx
->Pipeline
.Current
) {
1871 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1878 _mesa_ValidateProgram(GLuint program
)
1880 GET_CURRENT_CONTEXT(ctx
);
1881 validate_program(ctx
, program
);
1886 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1889 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1890 GLint
* range
, GLint
* precision
)
1892 const struct gl_program_constants
*limits
;
1893 const struct gl_precision
*p
;
1894 GET_CURRENT_CONTEXT(ctx
);
1896 switch (shadertype
) {
1897 case GL_VERTEX_SHADER
:
1898 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1900 case GL_FRAGMENT_SHADER
:
1901 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1904 _mesa_error(ctx
, GL_INVALID_ENUM
,
1905 "glGetShaderPrecisionFormat(shadertype)");
1909 switch (precisiontype
) {
1911 p
= &limits
->LowFloat
;
1913 case GL_MEDIUM_FLOAT
:
1914 p
= &limits
->MediumFloat
;
1917 p
= &limits
->HighFloat
;
1920 p
= &limits
->LowInt
;
1923 p
= &limits
->MediumInt
;
1926 p
= &limits
->HighInt
;
1929 _mesa_error(ctx
, GL_INVALID_ENUM
,
1930 "glGetShaderPrecisionFormat(precisiontype)");
1934 range
[0] = p
->RangeMin
;
1935 range
[1] = p
->RangeMax
;
1936 precision
[0] = p
->Precision
;
1941 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1944 _mesa_ReleaseShaderCompiler(void)
1946 _mesa_destroy_shader_compiler_caches();
1951 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1954 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1955 const void* binary
, GLint length
)
1957 GET_CURRENT_CONTEXT(ctx
);
1959 (void) binaryformat
;
1962 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1963 * page 88 of the OpenGL 4.5 specs state:
1965 * "An INVALID_VALUE error is generated if count or length is negative.
1966 * An INVALID_ENUM error is generated if binaryformat is not a supported
1967 * format returned in SHADER_BINARY_FORMATS."
1969 if (n
< 0 || length
< 0) {
1970 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1974 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1979 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1980 GLenum
*binaryFormat
, GLvoid
*binary
)
1982 struct gl_shader_program
*shProg
;
1983 GLsizei length_dummy
;
1984 GET_CURRENT_CONTEXT(ctx
);
1987 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1991 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1995 /* The ARB_get_program_binary spec says:
1997 * "If <length> is NULL, then no length is returned."
1999 * Ensure that length always points to valid storage to avoid multiple NULL
2000 * pointer checks below.
2003 length
= &length_dummy
;
2006 /* The ARB_get_program_binary spec says:
2008 * "When a program object's LINK_STATUS is FALSE, its program binary
2009 * length is zero, and a call to GetProgramBinary will generate an
2010 * INVALID_OPERATION error.
2012 if (!shProg
->data
->LinkStatus
) {
2013 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2014 "glGetProgramBinary(program %u not linked)",
2021 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2022 "glGetProgramBinary(driver supports zero binary formats)");
2024 (void) binaryFormat
;
2029 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
2030 const GLvoid
*binary
, GLsizei length
)
2032 struct gl_shader_program
*shProg
;
2033 GET_CURRENT_CONTEXT(ctx
);
2035 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
2039 (void) binaryFormat
;
2042 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2044 * "If a negative number is provided where an argument of type sizei or
2045 * sizeiptr is specified, an INVALID_VALUE error is generated."
2048 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
2052 /* The ARB_get_program_binary spec says:
2054 * "<binaryFormat> and <binary> must be those returned by a previous
2055 * call to GetProgramBinary, and <length> must be the length of the
2056 * program binary as returned by GetProgramBinary or GetProgramiv with
2057 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2058 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2061 * Since any value of binaryFormat passed "is not one of those specified as
2062 * allowable for [this] command, an INVALID_ENUM error is generated."
2064 shProg
->data
->LinkStatus
= GL_FALSE
;
2065 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
2070 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
2072 struct gl_shader_program
*shProg
;
2073 GET_CURRENT_CONTEXT(ctx
);
2075 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
2076 "glProgramParameteri");
2081 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
2082 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2083 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2084 * even be in the dispatch table, so we shouldn't need to expclicitly
2087 * On desktop, we ignore the 3.0+ requirement because it is silly.
2090 /* The ARB_get_program_binary extension spec says:
2092 * "An INVALID_VALUE error is generated if the <value> argument to
2093 * ProgramParameteri is not TRUE or FALSE."
2095 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2099 /* No need to notify the driver. Any changes will actually take effect
2100 * the next time the shader is linked.
2102 * The ARB_get_program_binary extension spec says:
2104 * "To indicate that a program binary is likely to be retrieved,
2105 * ProgramParameteri should be called with <pname>
2106 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2107 * will not be in effect until the next time LinkProgram or
2108 * ProgramBinary has been called successfully."
2110 * The resloution of issue 9 in the extension spec also says:
2112 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2113 * to indicate to the GL implementation that this program will
2114 * likely be saved with GetProgramBinary at some point. This will
2115 * give the GL implementation the opportunity to track any state
2116 * changes made to the program before being saved such that when it
2117 * is loaded again a recompile can be avoided."
2119 shProg
->BinaryRetreivableHint
= value
;
2122 case GL_PROGRAM_SEPARABLE
:
2123 /* Spec imply that the behavior is the same as ARB_get_program_binary
2124 * Chapter 7.3 Program Objects
2126 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2129 shProg
->SeparateShader
= value
;
2133 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2134 _mesa_enum_to_string(pname
));
2139 _mesa_error(ctx
, GL_INVALID_VALUE
,
2140 "glProgramParameteri(pname=%s, value=%d): "
2141 "value must be 0 or 1.",
2142 _mesa_enum_to_string(pname
),
2148 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2149 struct gl_shader_program
*shProg
,
2150 struct gl_pipeline_object
*shTarget
)
2152 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2153 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2158 * Copy program-specific data generated by linking from the gl_shader_program
2159 * object to the gl_program object referred to by the gl_linked_shader.
2161 * This function expects _mesa_reference_program() to have been previously
2162 * called setting the gl_linked_shaders program reference.
2165 _mesa_copy_linked_program_data(const struct gl_shader_program
*src
,
2166 struct gl_linked_shader
*dst_sh
)
2168 assert(dst_sh
->Program
);
2170 struct gl_program
*dst
= dst_sh
->Program
;
2172 dst
->info
.separate_shader
= src
->SeparateShader
;
2174 switch (dst_sh
->Stage
) {
2175 case MESA_SHADER_VERTEX
:
2176 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2177 dst
->CullDistanceArraySize
= src
->Vert
.CullDistanceArraySize
;
2179 case MESA_SHADER_TESS_CTRL
: {
2180 dst
->info
.tess
.tcs_vertices_out
= dst_sh
->info
.TessCtrl
.VerticesOut
;
2183 case MESA_SHADER_TESS_EVAL
: {
2184 dst
->info
.tess
.primitive_mode
= dst_sh
->info
.TessEval
.PrimitiveMode
;
2185 dst
->info
.tess
.spacing
= dst_sh
->info
.TessEval
.Spacing
;
2186 dst
->info
.tess
.ccw
= dst_sh
->info
.TessEval
.VertexOrder
== GL_CCW
;
2187 dst
->info
.tess
.point_mode
= dst_sh
->info
.TessEval
.PointMode
;
2188 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2189 dst
->CullDistanceArraySize
= src
->TessEval
.CullDistanceArraySize
;
2192 case MESA_SHADER_GEOMETRY
: {
2193 dst
->info
.gs
.vertices_in
= src
->Geom
.VerticesIn
;
2194 dst
->info
.gs
.vertices_out
= dst_sh
->info
.Geom
.VerticesOut
;
2195 dst
->info
.gs
.invocations
= dst_sh
->info
.Geom
.Invocations
;
2196 dst
->info
.gs
.input_primitive
= dst_sh
->info
.Geom
.InputType
;
2197 dst
->info
.gs
.output_primitive
= dst_sh
->info
.Geom
.OutputType
;
2198 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2199 dst
->CullDistanceArraySize
= src
->Geom
.CullDistanceArraySize
;
2200 dst
->info
.gs
.uses_end_primitive
= src
->Geom
.UsesEndPrimitive
;
2201 dst
->info
.gs
.uses_streams
= src
->Geom
.UsesStreams
;
2204 case MESA_SHADER_FRAGMENT
: {
2205 dst
->info
.fs
.depth_layout
= src
->FragDepthLayout
;
2206 dst
->info
.fs
.early_fragment_tests
= dst_sh
->info
.EarlyFragmentTests
;
2207 dst
->info
.fs
.inner_coverage
= dst_sh
->info
.InnerCoverage
;
2208 dst
->info
.fs
.post_depth_coverage
= dst_sh
->info
.PostDepthCoverage
;
2211 case MESA_SHADER_COMPUTE
: {
2212 for (int i
= 0; i
< 3; i
++)
2213 dst
->info
.cs
.local_size
[i
] = src
->Comp
.LocalSize
[i
];
2214 dst
->info
.cs
.shared_size
= src
->Comp
.SharedSize
;
2215 dst
->info
.cs
.local_size_variable
= src
->Comp
.LocalSizeVariable
;
2224 * ARB_separate_shader_objects: Compile & Link Program
2227 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2228 const GLchar
* const *strings
)
2230 GET_CURRENT_CONTEXT(ctx
);
2232 const GLuint shader
= create_shader(ctx
, type
);
2236 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2237 * GL_INVALID_VALUE should be generated if count < 0
2240 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2245 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2247 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2248 _mesa_compile_shader(ctx
, sh
);
2250 program
= create_shader_program(ctx
);
2252 struct gl_shader_program
*shProg
;
2253 GLint compiled
= GL_FALSE
;
2255 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2257 shProg
->SeparateShader
= GL_TRUE
;
2259 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2261 attach_shader(ctx
, program
, shader
);
2262 _mesa_link_program(ctx
, shProg
);
2263 detach_shader(ctx
, program
, shader
);
2267 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2268 append
-error
-to
-info
-log
;
2269 shProg
->data
->LinkStatus
= GL_FALSE
;
2274 ralloc_strcat(&shProg
->data
->InfoLog
, sh
->InfoLog
);
2277 delete_shader(ctx
, shader
);
2285 * For GL_ARB_tessellation_shader
2287 extern void GLAPIENTRY
2288 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2290 GET_CURRENT_CONTEXT(ctx
);
2292 if (!_mesa_has_tessellation(ctx
)) {
2293 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2297 if (pname
!= GL_PATCH_VERTICES
) {
2298 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2302 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2303 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2307 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2311 extern void GLAPIENTRY
2312 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2314 GET_CURRENT_CONTEXT(ctx
);
2316 if (!_mesa_has_tessellation(ctx
)) {
2317 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2322 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2323 FLUSH_VERTICES(ctx
, 0);
2324 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2325 4 * sizeof(GLfloat
));
2326 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2328 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2329 FLUSH_VERTICES(ctx
, 0);
2330 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2331 2 * sizeof(GLfloat
));
2332 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2335 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2341 * ARB_shader_subroutine
2344 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2347 GET_CURRENT_CONTEXT(ctx
);
2348 const char *api_name
= "glGetSubroutineUniformLocation";
2349 struct gl_shader_program
*shProg
;
2350 GLenum resource_type
;
2351 gl_shader_stage stage
;
2353 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2354 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2358 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2359 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2363 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2367 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2368 if (!shProg
->_LinkedShaders
[stage
]) {
2369 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2373 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2374 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2378 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2381 GET_CURRENT_CONTEXT(ctx
);
2382 const char *api_name
= "glGetSubroutineIndex";
2383 struct gl_shader_program
*shProg
;
2384 struct gl_program_resource
*res
;
2385 GLenum resource_type
;
2386 gl_shader_stage stage
;
2388 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2389 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2393 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2394 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2398 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2402 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2403 if (!shProg
->_LinkedShaders
[stage
]) {
2404 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2408 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2409 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2414 return _mesa_program_resource_index(shProg
, res
);
2419 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2420 GLuint index
, GLenum pname
, GLint
*values
)
2422 GET_CURRENT_CONTEXT(ctx
);
2423 const char *api_name
= "glGetActiveSubroutineUniformiv";
2424 struct gl_shader_program
*shProg
;
2425 struct gl_linked_shader
*sh
;
2426 gl_shader_stage stage
;
2427 struct gl_program_resource
*res
;
2428 const struct gl_uniform_storage
*uni
;
2429 GLenum resource_type
;
2432 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2433 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2437 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2438 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2442 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2446 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2447 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2449 sh
= shProg
->_LinkedShaders
[stage
];
2451 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2455 struct gl_program
*p
= shProg
->_LinkedShaders
[stage
]->Program
;
2456 if (index
>= p
->sh
.NumSubroutineUniforms
) {
2457 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2462 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2463 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2466 values
[0] = uni
->num_compatible_subroutines
;
2470 case GL_COMPATIBLE_SUBROUTINES
: {
2471 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2475 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2476 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2477 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2478 if (fn
->types
[j
] == uni
->type
) {
2479 values
[count
++] = i
;
2487 case GL_UNIFORM_SIZE
:
2488 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2491 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2494 case GL_UNIFORM_NAME_LENGTH
:
2495 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2497 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2498 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2502 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2509 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2510 GLuint index
, GLsizei bufsize
,
2511 GLsizei
*length
, GLchar
*name
)
2513 GET_CURRENT_CONTEXT(ctx
);
2514 const char *api_name
= "glGetActiveSubroutineUniformName";
2515 struct gl_shader_program
*shProg
;
2516 GLenum resource_type
;
2517 gl_shader_stage stage
;
2519 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2520 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2524 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2525 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2529 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2533 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2534 if (!shProg
->_LinkedShaders
[stage
]) {
2535 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2539 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2540 /* get program resource name */
2541 _mesa_get_program_resource_name(shProg
, resource_type
,
2543 length
, name
, api_name
);
2548 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2549 GLuint index
, GLsizei bufsize
,
2550 GLsizei
*length
, GLchar
*name
)
2552 GET_CURRENT_CONTEXT(ctx
);
2553 const char *api_name
= "glGetActiveSubroutineName";
2554 struct gl_shader_program
*shProg
;
2555 GLenum resource_type
;
2556 gl_shader_stage stage
;
2558 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2559 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2563 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2564 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2568 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2572 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2573 if (!shProg
->_LinkedShaders
[stage
]) {
2574 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2577 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2578 _mesa_get_program_resource_name(shProg
, resource_type
,
2580 length
, name
, api_name
);
2584 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2585 const GLuint
*indices
)
2587 GET_CURRENT_CONTEXT(ctx
);
2588 const char *api_name
= "glUniformSubroutinesuiv";
2589 struct gl_shader_program
*shProg
;
2590 struct gl_linked_shader
*sh
;
2591 gl_shader_stage stage
;
2594 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2595 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2599 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2600 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2604 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2605 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2607 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2611 sh
= shProg
->_LinkedShaders
[stage
];
2613 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2617 struct gl_program
*p
= shProg
->_LinkedShaders
[stage
]->Program
;
2618 if (count
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2619 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2625 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2631 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2634 for (j
= i
; j
< i
+ uni_count
; j
++) {
2635 struct gl_subroutine_function
*subfn
= NULL
;
2636 if (indices
[j
] > p
->sh
.MaxSubroutineFunctionIndex
) {
2637 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2641 for (f
= 0; f
< p
->sh
.NumSubroutineFunctions
; f
++) {
2642 if (p
->sh
.SubroutineFunctions
[f
].index
== indices
[j
])
2643 subfn
= &p
->sh
.SubroutineFunctions
[f
];
2650 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2651 if (subfn
->types
[k
] == uni
->type
)
2654 if (k
== subfn
->num_compat_types
) {
2655 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2659 ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[j
] = indices
[j
];
2664 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2669 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2672 GET_CURRENT_CONTEXT(ctx
);
2673 const char *api_name
= "glGetUniformSubroutineuiv";
2674 struct gl_shader_program
*shProg
;
2675 struct gl_linked_shader
*sh
;
2676 gl_shader_stage stage
;
2678 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2679 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2683 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2684 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2688 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2689 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2691 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2695 sh
= shProg
->_LinkedShaders
[stage
];
2697 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2701 struct gl_program
*p
= sh
->Program
;
2702 if (location
>= p
->sh
.NumSubroutineUniformRemapTable
) {
2703 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2707 *params
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[location
];
2712 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2713 GLenum pname
, GLint
*values
)
2715 GET_CURRENT_CONTEXT(ctx
);
2716 const char *api_name
= "glGetProgramStageiv";
2717 struct gl_shader_program
*shProg
;
2718 struct gl_linked_shader
*sh
;
2719 gl_shader_stage stage
;
2721 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2722 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2726 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2727 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2731 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2735 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2736 sh
= shProg
->_LinkedShaders
[stage
];
2738 /* ARB_shader_subroutine doesn't ask the program to be linked, or list any
2739 * INVALID_OPERATION in the case of not be linked.
2741 * And for some pnames, like GL_ACTIVE_SUBROUTINE_UNIFORMS, you can ask the
2742 * same info using other specs (ARB_program_interface_query), without the
2743 * need of the program to be linked, being the value for that case 0.
2745 * But at the same time, some other methods require the program to be
2746 * linked for pname related to locations, so it would be inconsistent to
2747 * not do the same here. So we are:
2748 * * Return GL_INVALID_OPERATION if not linked only for locations.
2749 * * Setting a default value of 0, to be returned if not linked.
2753 if (pname
== GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
) {
2754 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2759 struct gl_program
*p
= sh
->Program
;
2761 case GL_ACTIVE_SUBROUTINES
:
2762 values
[0] = p
->sh
.NumSubroutineFunctions
;
2764 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2765 values
[0] = p
->sh
.NumSubroutineUniformRemapTable
;
2767 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2768 values
[0] = p
->sh
.NumSubroutineUniforms
;
2770 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2774 GLenum resource_type
;
2775 struct gl_program_resource
*res
;
2777 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2778 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2779 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2781 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2786 values
[0] = max_len
;
2789 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2793 GLenum resource_type
;
2794 struct gl_program_resource
*res
;
2796 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2797 for (i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2798 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2800 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2801 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2807 values
[0] = max_len
;
2811 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2818 find_compat_subroutine(struct gl_program
*p
, const struct glsl_type
*type
)
2822 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2823 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2824 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2825 if (fn
->types
[j
] == type
)
2833 _mesa_shader_write_subroutine_index(struct gl_context
*ctx
,
2834 struct gl_program
*p
)
2838 if (p
->sh
.NumSubroutineUniformRemapTable
== 0)
2843 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2852 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2853 for (j
= 0; j
< uni_count
; j
++) {
2854 val
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[i
+ j
];
2855 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2858 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2860 } while(i
< p
->sh
.NumSubroutineUniformRemapTable
);
2864 _mesa_shader_write_subroutine_indices(struct gl_context
*ctx
,
2865 gl_shader_stage stage
)
2867 if (ctx
->_Shader
->CurrentProgram
[stage
] &&
2868 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
])
2869 _mesa_shader_write_subroutine_index(ctx
,
2870 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
]->Program
);
2874 _mesa_program_init_subroutine_defaults(struct gl_context
*ctx
,
2875 struct gl_program
*p
)
2879 struct gl_subroutine_index_binding
*binding
= &ctx
->SubroutineIndex
[p
->info
.stage
];
2880 if (binding
->NumIndex
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2881 binding
->IndexPtr
= realloc(binding
->IndexPtr
,
2882 p
->sh
.NumSubroutineUniformRemapTable
* (sizeof(GLuint
)));
2883 binding
->NumIndex
= p
->sh
.NumSubroutineUniformRemapTable
;
2886 for (int i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2887 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2892 binding
->IndexPtr
[i
] = find_compat_subroutine(p
, uni
->type
);
2897 _mesa_shader_program_init_subroutine_defaults(struct gl_context
*ctx
,
2898 struct gl_shader_program
*shProg
)
2905 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2906 if (!shProg
->_LinkedShaders
[i
])
2909 _mesa_program_init_subroutine_defaults(ctx
, shProg
->_LinkedShaders
[i
]->Program
);