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_shader_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
,
166 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
168 /* Extended for ARB_separate_shader_objects */
169 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
171 assert(ctx
->Shader
.RefCount
== 1);
172 mtx_destroy(&ctx
->Shader
.Mutex
);
177 * Copy string from <src> to <dst>, up to maxLength characters, returning
178 * length of <dst> in <length>.
179 * \param src the strings source
180 * \param maxLength max chars to copy
181 * \param length returns number of chars copied
182 * \param dst the string destination
185 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
186 GLsizei
*length
, const GLchar
*src
)
189 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
200 * Confirm that the a shader type is valid and supported by the implementation
202 * \param ctx Current GL context
203 * \param type Shader target
207 _mesa_validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
209 /* Note: when building built-in GLSL functions, this function may be
210 * invoked with ctx == NULL. In that case, we can only validate that it's
211 * a shader target we recognize, not that it's supported in the current
212 * context. But that's fine--we don't need any further validation than
213 * that when building built-in GLSL functions.
217 case GL_FRAGMENT_SHADER
:
218 return ctx
== NULL
|| ctx
->Extensions
.ARB_fragment_shader
;
219 case GL_VERTEX_SHADER
:
220 return ctx
== NULL
|| ctx
->Extensions
.ARB_vertex_shader
;
221 case GL_GEOMETRY_SHADER_ARB
:
222 return ctx
== NULL
|| _mesa_has_geometry_shaders(ctx
);
223 case GL_TESS_CONTROL_SHADER
:
224 case GL_TESS_EVALUATION_SHADER
:
225 return ctx
== NULL
|| _mesa_has_tessellation(ctx
);
226 case GL_COMPUTE_SHADER
:
227 return ctx
== NULL
|| _mesa_has_compute_shaders(ctx
);
235 is_program(struct gl_context
*ctx
, GLuint name
)
237 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
238 return shProg
? GL_TRUE
: GL_FALSE
;
243 is_shader(struct gl_context
*ctx
, GLuint name
)
245 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
246 return shader
? GL_TRUE
: GL_FALSE
;
251 * Attach shader to a shader program.
254 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
256 struct gl_shader_program
*shProg
;
257 struct gl_shader
*sh
;
260 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
262 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
266 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
271 n
= shProg
->NumShaders
;
272 for (i
= 0; i
< n
; i
++) {
273 if (shProg
->Shaders
[i
] == sh
) {
274 /* The shader is already attched to this program. The
275 * GL_ARB_shader_objects spec says:
277 * "The error INVALID_OPERATION is generated by AttachObjectARB
278 * if <obj> is already attached to <containerObj>."
280 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
282 } else if (same_type_disallowed
&&
283 shProg
->Shaders
[i
]->Stage
== sh
->Stage
) {
284 /* Shader with the same type is already attached to this program,
285 * OpenGL ES 2.0 and 3.0 specs say:
287 * "Multiple shader objects of the same type may not be attached
288 * to a single program object. [...] The error INVALID_OPERATION
289 * is generated if [...] another shader object of the same type
290 * as shader is already attached to program."
292 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
298 shProg
->Shaders
= realloc(shProg
->Shaders
,
299 (n
+ 1) * sizeof(struct gl_shader
*));
300 if (!shProg
->Shaders
) {
301 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
306 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
307 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
308 shProg
->NumShaders
++;
313 create_shader(struct gl_context
*ctx
, GLenum type
)
315 struct gl_shader
*sh
;
318 if (!_mesa_validate_shader_target(ctx
, type
)) {
319 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(%s)",
320 _mesa_enum_to_string(type
));
324 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
325 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
326 sh
= _mesa_new_shader(name
, _mesa_shader_enum_to_shader_stage(type
));
328 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, sh
);
329 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
336 create_shader_program(struct gl_context
*ctx
)
339 struct gl_shader_program
*shProg
;
341 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
343 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
345 shProg
= _mesa_new_shader_program(name
);
347 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, shProg
);
349 assert(shProg
->RefCount
== 1);
351 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
358 * Delete a shader program. Actually, just decrement the program's
359 * reference count and mark it as DeletePending.
360 * Used to implement glDeleteProgram() and glDeleteObjectARB().
363 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
366 * NOTE: deleting shaders/programs works a bit differently than
367 * texture objects (and buffer objects, etc). Shader/program
368 * handles/IDs exist in the hash table until the object is really
369 * deleted (refcount==0). With texture objects, the handle/ID is
370 * removed from the hash table in glDeleteTextures() while the tex
371 * object itself might linger until its refcount goes to zero.
373 struct gl_shader_program
*shProg
;
375 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
379 if (!shProg
->DeletePending
) {
380 shProg
->DeletePending
= GL_TRUE
;
382 /* effectively, decr shProg's refcount */
383 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
389 delete_shader(struct gl_context
*ctx
, GLuint shader
)
391 struct gl_shader
*sh
;
393 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
397 if (!sh
->DeletePending
) {
398 sh
->DeletePending
= GL_TRUE
;
400 /* effectively, decr sh's refcount */
401 _mesa_reference_shader(ctx
, &sh
, NULL
);
407 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
409 struct gl_shader_program
*shProg
;
413 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
417 n
= shProg
->NumShaders
;
419 for (i
= 0; i
< n
; i
++) {
420 if (shProg
->Shaders
[i
]->Name
== shader
) {
422 struct gl_shader
**newList
;
425 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
427 /* alloc new, smaller array */
428 newList
= malloc((n
- 1) * sizeof(struct gl_shader
*));
430 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
433 /* Copy old list entries to new list, skipping removed entry at [i] */
434 for (j
= 0; j
< i
; j
++) {
435 newList
[j
] = shProg
->Shaders
[j
];
438 newList
[j
++] = shProg
->Shaders
[i
];
441 /* Free old list and install new one */
442 free(shProg
->Shaders
);
443 shProg
->Shaders
= newList
;
444 shProg
->NumShaders
= n
- 1;
447 /* sanity check - make sure the new list's entries are sensible */
448 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
449 assert(shProg
->Shaders
[j
]->Stage
== MESA_SHADER_VERTEX
||
450 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_TESS_CTRL
||
451 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_TESS_EVAL
||
452 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_GEOMETRY
||
453 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_FRAGMENT
);
454 assert(shProg
->Shaders
[j
]->RefCount
> 0);
465 if (is_shader(ctx
, shader
) || is_program(ctx
, shader
))
466 err
= GL_INVALID_OPERATION
;
468 err
= GL_INVALID_VALUE
;
469 _mesa_error(ctx
, err
, "glDetachShader(shader)");
476 * Return list of shaders attached to shader program.
479 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
480 GLsizei
*count
, GLuint
*obj
)
482 struct gl_shader_program
*shProg
;
485 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetAttachedShaders(maxCount < 0)");
490 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
494 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
495 obj
[i
] = shProg
->Shaders
[i
]->Name
;
504 * glGetHandleARB() - return ID/name of currently bound shader program.
507 get_handle(struct gl_context
*ctx
, GLenum pname
)
509 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
510 if (ctx
->_Shader
->ActiveProgram
)
511 return ctx
->_Shader
->ActiveProgram
->Name
;
516 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
523 * Check if a geometry shader query is valid at this time. If not, report an
524 * error and return false.
526 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
528 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
529 * are queried for a program which has not been linked successfully, or
530 * which does not contain objects to form a geometry shader, then an
531 * INVALID_OPERATION error is generated."
534 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
536 if (shProg
->data
->LinkStatus
&&
537 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
541 _mesa_error(ctx
, GL_INVALID_OPERATION
,
542 "glGetProgramv(linked geometry shader required)");
548 * Check if a tessellation control shader query is valid at this time.
549 * If not, report an error and return false.
551 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
553 * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
554 * not been linked successfully, or which does not contain objects to
555 * form a tessellation control shader, then an INVALID_OPERATION error is
559 check_tcs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
561 if (shProg
->data
->LinkStatus
&&
562 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
] != NULL
) {
566 _mesa_error(ctx
, GL_INVALID_OPERATION
,
567 "glGetProgramv(linked tessellation control shader required)");
573 * Check if a tessellation evaluation shader query is valid at this time.
574 * If not, report an error and return false.
576 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
578 * "If any of the pname values in this paragraph are queried for a program
579 * which has not been linked successfully, or which does not contain
580 * objects to form a tessellation evaluation shader, then an
581 * INVALID_OPERATION error is generated."
585 check_tes_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
587 if (shProg
->data
->LinkStatus
&&
588 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
] != NULL
) {
592 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramv(linked tessellation "
593 "evaluation shader required)");
599 * glGetProgramiv() - get shader program state.
600 * Note that this is for GLSL shader programs, not ARB vertex/fragment
601 * programs (see glGetProgramivARB).
604 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
,
607 struct gl_shader_program
*shProg
608 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramiv(program)");
610 /* Is transform feedback available in this context?
613 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
614 || ctx
->API
== API_OPENGL_CORE
615 || _mesa_is_gles3(ctx
);
617 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
618 * and GL 3.2) are available in this context
620 const bool has_core_gs
= _mesa_has_geometry_shaders(ctx
);
621 const bool has_tess
= _mesa_has_tessellation(ctx
);
623 /* Are uniform buffer objects available in this context?
626 (ctx
->API
== API_OPENGL_COMPAT
&&
627 ctx
->Extensions
.ARB_uniform_buffer_object
)
628 || ctx
->API
== API_OPENGL_CORE
629 || _mesa_is_gles3(ctx
);
636 case GL_DELETE_STATUS
:
637 *params
= shProg
->DeletePending
;
640 *params
= shProg
->data
->LinkStatus
;
642 case GL_VALIDATE_STATUS
:
643 *params
= shProg
->data
->Validated
;
645 case GL_INFO_LOG_LENGTH
:
646 *params
= (shProg
->data
->InfoLog
&& shProg
->data
->InfoLog
[0] != '\0') ?
647 strlen(shProg
->data
->InfoLog
) + 1 : 0;
649 case GL_ATTACHED_SHADERS
:
650 *params
= shProg
->NumShaders
;
652 case GL_ACTIVE_ATTRIBUTES
:
653 *params
= _mesa_count_active_attribs(shProg
);
655 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
656 *params
= _mesa_longest_attribute_name_length(shProg
);
658 case GL_ACTIVE_UNIFORMS
: {
660 const unsigned num_uniforms
=
661 shProg
->data
->NumUniformStorage
- shProg
->data
->NumHiddenUniforms
;
662 for (*params
= 0, i
= 0; i
< num_uniforms
; i
++) {
663 if (!shProg
->data
->UniformStorage
[i
].is_shader_storage
)
668 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
671 const unsigned num_uniforms
=
672 shProg
->data
->NumUniformStorage
- shProg
->data
->NumHiddenUniforms
;
674 for (i
= 0; i
< num_uniforms
; i
++) {
675 if (shProg
->data
->UniformStorage
[i
].is_shader_storage
)
678 /* Add one for the terminating NUL character for a non-array, and
679 * 4 for the "[0]" and the NUL for an array.
681 const GLint len
= strlen(shProg
->data
->UniformStorage
[i
].name
) + 1 +
682 ((shProg
->data
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
691 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
694 *params
= shProg
->TransformFeedback
.NumVarying
;
696 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
702 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
703 /* Add one for the terminating NUL character.
706 strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
715 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
718 *params
= shProg
->TransformFeedback
.BufferMode
;
720 case GL_GEOMETRY_VERTICES_OUT
:
723 if (check_gs_query(ctx
, shProg
)) {
724 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
725 info
.Geom
.VerticesOut
;
728 case GL_GEOMETRY_SHADER_INVOCATIONS
:
729 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
731 if (check_gs_query(ctx
, shProg
)) {
732 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
733 info
.Geom
.Invocations
;
736 case GL_GEOMETRY_INPUT_TYPE
:
739 if (check_gs_query(ctx
, shProg
)) {
740 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
744 case GL_GEOMETRY_OUTPUT_TYPE
:
747 if (check_gs_query(ctx
, shProg
)) {
748 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
749 info
.Geom
.OutputType
;
752 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
759 for (i
= 0; i
< shProg
->data
->NumUniformBlocks
; i
++) {
760 /* Add one for the terminating NUL character.
762 const GLint len
= strlen(shProg
->data
->UniformBlocks
[i
].Name
) + 1;
771 case GL_ACTIVE_UNIFORM_BLOCKS
:
775 *params
= shProg
->data
->NumUniformBlocks
;
777 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
778 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
779 * only available with desktop OpenGL 3.0+ with the
780 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
782 * On desktop, we ignore the 3.0+ requirement because it is silly.
784 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
787 *params
= shProg
->BinaryRetreivableHint
;
789 case GL_PROGRAM_BINARY_LENGTH
:
792 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
793 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
796 *params
= shProg
->data
->NumAtomicBuffers
;
798 case GL_COMPUTE_WORK_GROUP_SIZE
: {
800 if (!_mesa_has_compute_shaders(ctx
))
802 if (!shProg
->data
->LinkStatus
) {
803 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
807 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
808 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
812 for (i
= 0; i
< 3; i
++)
813 params
[i
] = shProg
->Comp
.LocalSize
[i
];
816 case GL_PROGRAM_SEPARABLE
:
817 /* If the program has not been linked, return initial value 0. */
818 *params
= (shProg
->data
->LinkStatus
== GL_FALSE
) ? 0 : shProg
->SeparateShader
;
821 /* ARB_tessellation_shader */
822 case GL_TESS_CONTROL_OUTPUT_VERTICES
:
825 if (check_tcs_query(ctx
, shProg
)) {
826 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->
827 info
.TessCtrl
.VerticesOut
;
830 case GL_TESS_GEN_MODE
:
833 if (check_tes_query(ctx
, shProg
)) {
834 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
835 info
.TessEval
.PrimitiveMode
;
838 case GL_TESS_GEN_SPACING
:
841 if (check_tes_query(ctx
, shProg
)) {
842 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
843 info
.TessEval
.Spacing
;
846 case GL_TESS_GEN_VERTEX_ORDER
:
849 if (check_tes_query(ctx
, shProg
)) {
850 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
851 info
.TessEval
.VertexOrder
;
854 case GL_TESS_GEN_POINT_MODE
:
857 if (check_tes_query(ctx
, shProg
)) {
858 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
859 info
.TessEval
.PointMode
;
866 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
867 _mesa_enum_to_string(pname
));
872 * glGetShaderiv() - get GLSL shader state
875 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
877 struct gl_shader
*shader
=
878 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
886 *params
= shader
->Type
;
888 case GL_DELETE_STATUS
:
889 *params
= shader
->DeletePending
;
891 case GL_COMPILE_STATUS
:
892 *params
= shader
->CompileStatus
;
894 case GL_INFO_LOG_LENGTH
:
895 *params
= (shader
->InfoLog
&& shader
->InfoLog
[0] != '\0') ?
896 strlen(shader
->InfoLog
) + 1 : 0;
898 case GL_SHADER_SOURCE_LENGTH
:
899 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
902 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
909 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
910 GLsizei
*length
, GLchar
*infoLog
)
912 struct gl_shader_program
*shProg
;
914 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
915 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
917 * "If a negative number is provided where an argument of type sizei or
918 * sizeiptr is specified, an INVALID_VALUE error is generated."
921 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(bufSize < 0)");
925 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
926 "glGetProgramInfoLog(program)");
931 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->data
->InfoLog
);
936 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
937 GLsizei
*length
, GLchar
*infoLog
)
939 struct gl_shader
*sh
;
941 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
942 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
944 * "If a negative number is provided where an argument of type sizei or
945 * sizeiptr is specified, an INVALID_VALUE error is generated."
948 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(bufSize < 0)");
952 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderInfoLog(shader)");
957 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
962 * Return shader source code.
965 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
966 GLsizei
*length
, GLchar
*sourceOut
)
968 struct gl_shader
*sh
;
971 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderSource(bufSize < 0)");
975 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
979 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
984 * Set/replace shader source code. A helper function used by
985 * glShaderSource[ARB].
988 shader_source(struct gl_shader
*sh
, const GLchar
*source
)
992 /* free old shader source string and install new one */
993 free((void *)sh
->Source
);
996 sh
->SourceChecksum
= util_hash_crc32(sh
->Source
, strlen(sh
->Source
));
1005 _mesa_compile_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
1011 /* If the user called glCompileShader without first calling
1012 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
1014 sh
->CompileStatus
= GL_FALSE
;
1016 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1017 _mesa_log("GLSL source for %s shader %d:\n",
1018 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1019 _mesa_log("%s\n", sh
->Source
);
1022 /* this call will set the shader->CompileStatus field to indicate if
1023 * compilation was successful.
1025 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
1027 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
1028 _mesa_write_shader_to_file(sh
);
1031 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1032 if (sh
->CompileStatus
) {
1034 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
1035 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
1037 _mesa_log("No GLSL IR for shader %d (shader may be from "
1038 "cache)\n", sh
->Name
);
1042 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
1044 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
1045 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
1046 _mesa_log("%s\n", sh
->InfoLog
);
1051 if (!sh
->CompileStatus
) {
1052 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1053 _mesa_log("GLSL source for %s shader %d:\n",
1054 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1055 _mesa_log("%s\n", sh
->Source
);
1056 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1059 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1060 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1061 sh
->Name
, sh
->InfoLog
);
1068 * Link a program's shaders.
1071 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1076 /* From the ARB_transform_feedback2 specification:
1077 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1078 * the name of a program being used by one or more transform feedback
1079 * objects, even if the objects are not currently bound or are paused."
1081 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1082 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1083 "glLinkProgram(transform feedback is using the program)");
1087 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1089 _mesa_glsl_link_shader(ctx
, shProg
);
1091 /* Capture .shader_test files. */
1092 const char *capture_path
= _mesa_get_shader_capture_path();
1093 if (shProg
->Name
!= 0 && shProg
->Name
!= ~0 && capture_path
!= NULL
) {
1095 char *filename
= ralloc_asprintf(NULL
, "%s/%u.shader_test",
1096 capture_path
, shProg
->Name
);
1097 file
= fopen(filename
, "w");
1099 fprintf(file
, "[require]\nGLSL%s >= %u.%02u\n",
1100 shProg
->IsES
? " ES" : "",
1101 shProg
->Version
/ 100, shProg
->Version
% 100);
1102 if (shProg
->SeparateShader
)
1103 fprintf(file
, "GL_ARB_separate_shader_objects\nSSO ENABLED\n");
1104 fprintf(file
, "\n");
1106 for (unsigned i
= 0; i
< shProg
->NumShaders
; i
++) {
1107 fprintf(file
, "[%s shader]\n%s\n",
1108 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1109 shProg
->Shaders
[i
]->Source
);
1113 _mesa_warning(ctx
, "Failed to open %s", filename
);
1116 ralloc_free(filename
);
1119 if (shProg
->data
->LinkStatus
== GL_FALSE
&&
1120 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1121 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1122 shProg
->Name
, shProg
->data
->InfoLog
);
1129 printf("Link %u shaders in program %u: %s\n",
1130 shProg
->NumShaders
, shProg
->Name
,
1131 shProg
->data
->LinkStatus
? "Success" : "Failed");
1133 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1134 printf(" shader %u, stage %u\n",
1135 shProg
->Shaders
[i
]->Name
,
1136 shProg
->Shaders
[i
]->Stage
);
1143 * Print basic shader info (for debug).
1146 print_shader_info(const struct gl_shader_program
*shProg
)
1150 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1151 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1152 printf(" %s shader %u, checksum %u\n",
1153 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1154 shProg
->Shaders
[i
]->Name
,
1155 shProg
->Shaders
[i
]->SourceChecksum
);
1157 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1158 printf(" vert prog %u\n",
1159 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1160 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1161 printf(" frag prog %u\n",
1162 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1163 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1164 printf(" geom prog %u\n",
1165 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1166 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1167 printf(" tesc prog %u\n",
1168 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1169 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1170 printf(" tese prog %u\n",
1171 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1176 * Use the named shader program for subsequent glUniform calls
1179 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1182 if ((shProg
!= NULL
) && !shProg
->data
->LinkStatus
) {
1183 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1184 "%s(program %u not linked)", caller
, shProg
->Name
);
1188 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1189 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1195 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1196 struct gl_shader_program
*shProg
,
1197 struct gl_pipeline_object
*shTarget
)
1199 struct gl_shader_program
**target
;
1201 target
= &shTarget
->CurrentProgram
[stage
];
1202 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1206 _mesa_shader_program_init_subroutine_defaults(ctx
, shProg
);
1208 if (*target
!= shProg
) {
1209 /* Program is current, flush it */
1210 if (shTarget
== ctx
->_Shader
) {
1211 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1214 /* If the shader is also bound as the current rendering shader, unbind
1215 * it from that binding point as well. This ensures that the correct
1216 * semantics of glDeleteProgram are maintained.
1219 case MESA_SHADER_VERTEX
:
1220 case MESA_SHADER_TESS_CTRL
:
1221 case MESA_SHADER_TESS_EVAL
:
1222 case MESA_SHADER_GEOMETRY
:
1223 case MESA_SHADER_COMPUTE
:
1224 /* Empty for now. */
1226 case MESA_SHADER_FRAGMENT
:
1227 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1228 _mesa_reference_shader_program(ctx
,
1229 &ctx
->_Shader
->_CurrentFragmentProgram
,
1235 _mesa_reference_shader_program(ctx
, target
, shProg
);
1242 * Use the named shader program for subsequent rendering.
1245 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1248 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1249 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1250 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1255 * Do validation of the given shader program.
1256 * \param errMsg returns error message if validation fails.
1257 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1260 validate_shader_program(const struct gl_shader_program
*shProg
,
1263 if (!shProg
->data
->LinkStatus
) {
1267 /* From the GL spec, a program is invalid if any of these are true:
1269 any two active samplers in the current program object are of
1270 different types, but refer to the same texture image unit,
1272 any active sampler in the current program object refers to a texture
1273 image unit where fixed-function fragment processing accesses a
1274 texture target that does not match the sampler type, or
1276 the sum of the number of active samplers in the program and the
1277 number of texture image units enabled for fixed-function fragment
1278 processing exceeds the combined limit on the total number of texture
1279 image units allowed.
1283 * Check: any two active samplers in the current program object are of
1284 * different types, but refer to the same texture image unit,
1286 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1294 * Called via glValidateProgram()
1297 validate_program(struct gl_context
*ctx
, GLuint program
)
1299 struct gl_shader_program
*shProg
;
1300 char errMsg
[100] = "";
1302 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1307 shProg
->data
->Validated
= validate_shader_program(shProg
, errMsg
);
1308 if (!shProg
->data
->Validated
) {
1309 /* update info log */
1310 if (shProg
->data
->InfoLog
) {
1311 ralloc_free(shProg
->data
->InfoLog
);
1313 shProg
->data
->InfoLog
= ralloc_strdup(shProg
->data
, errMsg
);
1320 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1322 GET_CURRENT_CONTEXT(ctx
);
1323 attach_shader(ctx
, program
, shader
);
1328 _mesa_AttachShader(GLuint program
, GLuint shader
)
1330 GET_CURRENT_CONTEXT(ctx
);
1331 attach_shader(ctx
, program
, shader
);
1336 _mesa_CompileShader(GLuint shaderObj
)
1338 GET_CURRENT_CONTEXT(ctx
);
1339 if (MESA_VERBOSE
& VERBOSE_API
)
1340 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1341 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1342 "glCompileShader"));
1347 _mesa_CreateShader(GLenum type
)
1349 GET_CURRENT_CONTEXT(ctx
);
1350 if (MESA_VERBOSE
& VERBOSE_API
)
1351 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1352 return create_shader(ctx
, type
);
1356 GLhandleARB GLAPIENTRY
1357 _mesa_CreateShaderObjectARB(GLenum type
)
1359 GET_CURRENT_CONTEXT(ctx
);
1360 return create_shader(ctx
, type
);
1365 _mesa_CreateProgram(void)
1367 GET_CURRENT_CONTEXT(ctx
);
1368 if (MESA_VERBOSE
& VERBOSE_API
)
1369 _mesa_debug(ctx
, "glCreateProgram\n");
1370 return create_shader_program(ctx
);
1374 GLhandleARB GLAPIENTRY
1375 _mesa_CreateProgramObjectARB(void)
1377 GET_CURRENT_CONTEXT(ctx
);
1378 return create_shader_program(ctx
);
1383 _mesa_DeleteObjectARB(GLhandleARB obj
)
1385 if (MESA_VERBOSE
& VERBOSE_API
) {
1386 GET_CURRENT_CONTEXT(ctx
);
1387 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1391 GET_CURRENT_CONTEXT(ctx
);
1392 FLUSH_VERTICES(ctx
, 0);
1393 if (is_program(ctx
, obj
)) {
1394 delete_shader_program(ctx
, obj
);
1396 else if (is_shader(ctx
, obj
)) {
1397 delete_shader(ctx
, obj
);
1407 _mesa_DeleteProgram(GLuint name
)
1410 GET_CURRENT_CONTEXT(ctx
);
1411 FLUSH_VERTICES(ctx
, 0);
1412 delete_shader_program(ctx
, name
);
1418 _mesa_DeleteShader(GLuint name
)
1421 GET_CURRENT_CONTEXT(ctx
);
1422 FLUSH_VERTICES(ctx
, 0);
1423 delete_shader(ctx
, name
);
1429 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1431 GET_CURRENT_CONTEXT(ctx
);
1432 detach_shader(ctx
, program
, shader
);
1437 _mesa_DetachShader(GLuint program
, GLuint shader
)
1439 GET_CURRENT_CONTEXT(ctx
);
1440 detach_shader(ctx
, program
, shader
);
1445 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1446 GLsizei
* count
, GLhandleARB
* obj
)
1448 GET_CURRENT_CONTEXT(ctx
);
1449 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1454 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1455 GLsizei
*count
, GLuint
*obj
)
1457 GET_CURRENT_CONTEXT(ctx
);
1458 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1463 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1464 GLcharARB
* infoLog
)
1466 GET_CURRENT_CONTEXT(ctx
);
1467 if (is_program(ctx
, object
)) {
1468 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1470 else if (is_shader(ctx
, object
)) {
1471 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1474 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1480 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1482 GET_CURRENT_CONTEXT(ctx
);
1483 /* Implement in terms of GetProgramiv, GetShaderiv */
1484 if (is_program(ctx
, object
)) {
1485 if (pname
== GL_OBJECT_TYPE_ARB
) {
1486 *params
= GL_PROGRAM_OBJECT_ARB
;
1489 get_programiv(ctx
, object
, pname
, params
);
1492 else if (is_shader(ctx
, object
)) {
1493 if (pname
== GL_OBJECT_TYPE_ARB
) {
1494 *params
= GL_SHADER_OBJECT_ARB
;
1497 get_shaderiv(ctx
, object
, pname
, params
);
1501 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1507 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1510 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1511 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1512 params
[0] = (GLfloat
) iparams
[0];
1517 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1519 GET_CURRENT_CONTEXT(ctx
);
1520 get_programiv(ctx
, program
, pname
, params
);
1525 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1527 GET_CURRENT_CONTEXT(ctx
);
1528 get_shaderiv(ctx
, shader
, pname
, params
);
1533 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1534 GLsizei
*length
, GLchar
*infoLog
)
1536 GET_CURRENT_CONTEXT(ctx
);
1537 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1542 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1543 GLsizei
*length
, GLchar
*infoLog
)
1545 GET_CURRENT_CONTEXT(ctx
);
1546 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1551 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1552 GLsizei
*length
, GLchar
*sourceOut
)
1554 GET_CURRENT_CONTEXT(ctx
);
1555 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1559 GLhandleARB GLAPIENTRY
1560 _mesa_GetHandleARB(GLenum pname
)
1562 GET_CURRENT_CONTEXT(ctx
);
1563 return get_handle(ctx
, pname
);
1567 GLboolean GLAPIENTRY
1568 _mesa_IsProgram(GLuint name
)
1570 GET_CURRENT_CONTEXT(ctx
);
1571 return is_program(ctx
, name
);
1575 GLboolean GLAPIENTRY
1576 _mesa_IsShader(GLuint name
)
1578 GET_CURRENT_CONTEXT(ctx
);
1579 return is_shader(ctx
, name
);
1584 _mesa_LinkProgram(GLuint programObj
)
1586 GET_CURRENT_CONTEXT(ctx
);
1587 if (MESA_VERBOSE
& VERBOSE_API
)
1588 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1589 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1593 #if defined(HAVE_SHA1)
1595 * Generate a SHA-1 hash value string for given source string.
1598 generate_sha1(const char *source
, char sha_str
[64])
1600 unsigned char sha
[20];
1601 _mesa_sha1_compute(source
, strlen(source
), sha
);
1602 _mesa_sha1_format(sha_str
, sha
);
1606 * Construct a full path for shader replacement functionality using
1609 * <path>/<stage prefix>_<CHECKSUM>.glsl
1612 construct_name(const gl_shader_stage stage
, const char *source
,
1616 static const char *types
[] = {
1617 "VS", "TC", "TE", "GS", "FS", "CS",
1620 generate_sha1(source
, sha
);
1621 return ralloc_asprintf(NULL
, "%s/%s_%s.glsl", path
, types
[stage
], sha
);
1625 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1628 dump_shader(const gl_shader_stage stage
, const char *source
)
1630 static bool path_exists
= true;
1637 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1639 path_exists
= false;
1643 char *name
= construct_name(stage
, source
, dump_path
);
1645 f
= fopen(name
, "w");
1650 GET_CURRENT_CONTEXT(ctx
);
1651 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1658 * Read shader source code from a file.
1659 * Useful for debugging to override an app's shader.
1662 read_shader(const gl_shader_stage stage
, const char *source
)
1665 static bool path_exists
= true;
1666 int len
, shader_size
= 0;
1673 read_path
= getenv("MESA_SHADER_READ_PATH");
1675 path_exists
= false;
1679 char *name
= construct_name(stage
, source
, read_path
);
1680 f
= fopen(name
, "r");
1685 /* allocate enough room for the entire shader */
1686 fseek(f
, 0, SEEK_END
);
1687 shader_size
= ftell(f
);
1689 assert(shader_size
);
1691 /* add one for terminating zero */
1694 buffer
= malloc(shader_size
);
1697 len
= fread(buffer
, 1, shader_size
, f
);
1704 #endif /* HAVE_SHA1 */
1707 * Called via glShaderSource() and glShaderSourceARB() API functions.
1708 * Basically, concatenate the source code strings into one long string
1709 * and pass it to _mesa_shader_source().
1712 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1713 const GLchar
* const * string
, const GLint
* length
)
1715 GET_CURRENT_CONTEXT(ctx
);
1717 GLsizei i
, totalLength
;
1719 struct gl_shader
*sh
;
1721 #if defined(HAVE_SHA1)
1722 GLcharARB
*replacement
;
1723 #endif /* HAVE_SHA1 */
1725 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1729 if (string
== NULL
) {
1730 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1735 * This array holds offsets of where the appropriate string ends, thus the
1736 * last element will be set to the total length of the source code.
1738 offsets
= malloc(count
* sizeof(GLint
));
1739 if (offsets
== NULL
) {
1740 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1744 for (i
= 0; i
< count
; i
++) {
1745 if (string
[i
] == NULL
) {
1746 free((GLvoid
*) offsets
);
1747 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1748 "glShaderSourceARB(null string)");
1751 if (length
== NULL
|| length
[i
] < 0)
1752 offsets
[i
] = strlen(string
[i
]);
1754 offsets
[i
] = length
[i
];
1755 /* accumulate string lengths */
1757 offsets
[i
] += offsets
[i
- 1];
1760 /* Total length of source string is sum off all strings plus two.
1761 * One extra byte for terminating zero, another extra byte to silence
1762 * valgrind warnings in the parser/grammer code.
1764 totalLength
= offsets
[count
- 1] + 2;
1765 source
= malloc(totalLength
* sizeof(GLcharARB
));
1766 if (source
== NULL
) {
1767 free((GLvoid
*) offsets
);
1768 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1772 for (i
= 0; i
< count
; i
++) {
1773 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1774 memcpy(source
+ start
, string
[i
],
1775 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1777 source
[totalLength
- 1] = '\0';
1778 source
[totalLength
- 2] = '\0';
1780 #if defined(HAVE_SHA1)
1781 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1782 * if corresponding entry found from MESA_SHADER_READ_PATH.
1784 dump_shader(sh
->Stage
, source
);
1786 replacement
= read_shader(sh
->Stage
, source
);
1789 source
= replacement
;
1791 #endif /* HAVE_SHA1 */
1793 shader_source(sh
, source
);
1800 _mesa_UseProgram(GLuint program
)
1802 GET_CURRENT_CONTEXT(ctx
);
1803 struct gl_shader_program
*shProg
;
1805 if (MESA_VERBOSE
& VERBOSE_API
)
1806 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1808 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1809 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1810 "glUseProgram(transform feedback active)");
1815 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1819 if (!shProg
->data
->LinkStatus
) {
1820 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1821 "glUseProgram(program %u not linked)", program
);
1826 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1827 print_shader_info(shProg
);
1834 /* The ARB_separate_shader_object spec says:
1836 * "The executable code for an individual shader stage is taken from
1837 * the current program for that stage. If there is a current program
1838 * object established by UseProgram, that program is considered current
1839 * for all stages. Otherwise, if there is a bound program pipeline
1840 * object (section 2.14.PPO), the program bound to the appropriate
1841 * stage of the pipeline object is considered current."
1844 /* Attach shader state to the binding point */
1845 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1846 /* Update the program */
1847 _mesa_use_program(ctx
, shProg
);
1849 /* Must be done first: detach the progam */
1850 _mesa_use_program(ctx
, shProg
);
1851 /* Unattach shader_state binding point */
1852 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1853 /* If a pipeline was bound, rebind it */
1854 if (ctx
->Pipeline
.Current
) {
1855 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1862 _mesa_ValidateProgram(GLuint program
)
1864 GET_CURRENT_CONTEXT(ctx
);
1865 validate_program(ctx
, program
);
1870 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1873 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1874 GLint
* range
, GLint
* precision
)
1876 const struct gl_program_constants
*limits
;
1877 const struct gl_precision
*p
;
1878 GET_CURRENT_CONTEXT(ctx
);
1880 switch (shadertype
) {
1881 case GL_VERTEX_SHADER
:
1882 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1884 case GL_FRAGMENT_SHADER
:
1885 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1888 _mesa_error(ctx
, GL_INVALID_ENUM
,
1889 "glGetShaderPrecisionFormat(shadertype)");
1893 switch (precisiontype
) {
1895 p
= &limits
->LowFloat
;
1897 case GL_MEDIUM_FLOAT
:
1898 p
= &limits
->MediumFloat
;
1901 p
= &limits
->HighFloat
;
1904 p
= &limits
->LowInt
;
1907 p
= &limits
->MediumInt
;
1910 p
= &limits
->HighInt
;
1913 _mesa_error(ctx
, GL_INVALID_ENUM
,
1914 "glGetShaderPrecisionFormat(precisiontype)");
1918 range
[0] = p
->RangeMin
;
1919 range
[1] = p
->RangeMax
;
1920 precision
[0] = p
->Precision
;
1925 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1928 _mesa_ReleaseShaderCompiler(void)
1930 _mesa_destroy_shader_compiler_caches();
1935 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1938 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1939 const void* binary
, GLint length
)
1941 GET_CURRENT_CONTEXT(ctx
);
1943 (void) binaryformat
;
1946 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1947 * page 88 of the OpenGL 4.5 specs state:
1949 * "An INVALID_VALUE error is generated if count or length is negative.
1950 * An INVALID_ENUM error is generated if binaryformat is not a supported
1951 * format returned in SHADER_BINARY_FORMATS."
1953 if (n
< 0 || length
< 0) {
1954 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1958 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1963 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1964 GLenum
*binaryFormat
, GLvoid
*binary
)
1966 struct gl_shader_program
*shProg
;
1967 GLsizei length_dummy
;
1968 GET_CURRENT_CONTEXT(ctx
);
1971 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1975 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1979 /* The ARB_get_program_binary spec says:
1981 * "If <length> is NULL, then no length is returned."
1983 * Ensure that length always points to valid storage to avoid multiple NULL
1984 * pointer checks below.
1987 length
= &length_dummy
;
1990 /* The ARB_get_program_binary spec says:
1992 * "When a program object's LINK_STATUS is FALSE, its program binary
1993 * length is zero, and a call to GetProgramBinary will generate an
1994 * INVALID_OPERATION error.
1996 if (!shProg
->data
->LinkStatus
) {
1997 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1998 "glGetProgramBinary(program %u not linked)",
2005 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2006 "glGetProgramBinary(driver supports zero binary formats)");
2008 (void) binaryFormat
;
2013 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
2014 const GLvoid
*binary
, GLsizei length
)
2016 struct gl_shader_program
*shProg
;
2017 GET_CURRENT_CONTEXT(ctx
);
2019 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
2023 (void) binaryFormat
;
2026 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2028 * "If a negative number is provided where an argument of type sizei or
2029 * sizeiptr is specified, an INVALID_VALUE error is generated."
2032 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
2036 /* The ARB_get_program_binary spec says:
2038 * "<binaryFormat> and <binary> must be those returned by a previous
2039 * call to GetProgramBinary, and <length> must be the length of the
2040 * program binary as returned by GetProgramBinary or GetProgramiv with
2041 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2042 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2045 * Since any value of binaryFormat passed "is not one of those specified as
2046 * allowable for [this] command, an INVALID_ENUM error is generated."
2048 shProg
->data
->LinkStatus
= GL_FALSE
;
2049 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
2054 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
2056 struct gl_shader_program
*shProg
;
2057 GET_CURRENT_CONTEXT(ctx
);
2059 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
2060 "glProgramParameteri");
2065 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
2066 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2067 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2068 * even be in the dispatch table, so we shouldn't need to expclicitly
2071 * On desktop, we ignore the 3.0+ requirement because it is silly.
2074 /* The ARB_get_program_binary extension spec says:
2076 * "An INVALID_VALUE error is generated if the <value> argument to
2077 * ProgramParameteri is not TRUE or FALSE."
2079 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2083 /* No need to notify the driver. Any changes will actually take effect
2084 * the next time the shader is linked.
2086 * The ARB_get_program_binary extension spec says:
2088 * "To indicate that a program binary is likely to be retrieved,
2089 * ProgramParameteri should be called with <pname>
2090 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2091 * will not be in effect until the next time LinkProgram or
2092 * ProgramBinary has been called successfully."
2094 * The resloution of issue 9 in the extension spec also says:
2096 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2097 * to indicate to the GL implementation that this program will
2098 * likely be saved with GetProgramBinary at some point. This will
2099 * give the GL implementation the opportunity to track any state
2100 * changes made to the program before being saved such that when it
2101 * is loaded again a recompile can be avoided."
2103 shProg
->BinaryRetreivableHint
= value
;
2106 case GL_PROGRAM_SEPARABLE
:
2107 /* Spec imply that the behavior is the same as ARB_get_program_binary
2108 * Chapter 7.3 Program Objects
2110 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2113 shProg
->SeparateShader
= value
;
2117 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2118 _mesa_enum_to_string(pname
));
2123 _mesa_error(ctx
, GL_INVALID_VALUE
,
2124 "glProgramParameteri(pname=%s, value=%d): "
2125 "value must be 0 or 1.",
2126 _mesa_enum_to_string(pname
),
2132 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2133 struct gl_shader_program
*shProg
,
2134 struct gl_pipeline_object
*shTarget
)
2136 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2137 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2142 * Copy program-specific data generated by linking from the gl_shader_program
2143 * object to the gl_program object referred to by the gl_linked_shader.
2145 * This function expects _mesa_reference_program() to have been previously
2146 * called setting the gl_linked_shaders program reference.
2149 _mesa_copy_linked_program_data(const struct gl_shader_program
*src
,
2150 struct gl_linked_shader
*dst_sh
)
2152 assert(dst_sh
->Program
);
2154 struct gl_program
*dst
= dst_sh
->Program
;
2156 dst
->info
.num_images
= dst_sh
->NumImages
;
2158 switch (dst_sh
->Stage
) {
2159 case MESA_SHADER_VERTEX
:
2160 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2161 dst
->CullDistanceArraySize
= src
->Vert
.CullDistanceArraySize
;
2163 case MESA_SHADER_TESS_CTRL
: {
2164 dst
->info
.tcs
.vertices_out
= dst_sh
->info
.TessCtrl
.VerticesOut
;
2167 case MESA_SHADER_TESS_EVAL
: {
2168 dst
->info
.tes
.primitive_mode
= dst_sh
->info
.TessEval
.PrimitiveMode
;
2169 dst
->info
.tes
.spacing
= dst_sh
->info
.TessEval
.Spacing
;
2170 dst
->info
.tes
.vertex_order
= dst_sh
->info
.TessEval
.VertexOrder
;
2171 dst
->info
.tes
.point_mode
= dst_sh
->info
.TessEval
.PointMode
;
2172 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2173 dst
->CullDistanceArraySize
= src
->TessEval
.CullDistanceArraySize
;
2176 case MESA_SHADER_GEOMETRY
: {
2177 dst
->info
.gs
.vertices_in
= src
->Geom
.VerticesIn
;
2178 dst
->info
.gs
.vertices_out
= dst_sh
->info
.Geom
.VerticesOut
;
2179 dst
->info
.gs
.invocations
= dst_sh
->info
.Geom
.Invocations
;
2180 dst
->info
.gs
.input_primitive
= dst_sh
->info
.Geom
.InputType
;
2181 dst
->info
.gs
.output_primitive
= dst_sh
->info
.Geom
.OutputType
;
2182 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2183 dst
->CullDistanceArraySize
= src
->Geom
.CullDistanceArraySize
;
2184 dst
->info
.gs
.uses_end_primitive
= src
->Geom
.UsesEndPrimitive
;
2185 dst
->info
.gs
.uses_streams
= src
->Geom
.UsesStreams
;
2188 case MESA_SHADER_FRAGMENT
: {
2189 dst
->info
.fs
.depth_layout
= src
->FragDepthLayout
;
2190 dst
->info
.fs
.early_fragment_tests
= dst_sh
->info
.EarlyFragmentTests
;
2193 case MESA_SHADER_COMPUTE
: {
2194 for (int i
= 0; i
< 3; i
++)
2195 dst
->info
.cs
.local_size
[i
] = src
->Comp
.LocalSize
[i
];
2196 dst
->info
.cs
.shared_size
= src
->Comp
.SharedSize
;
2205 * ARB_separate_shader_objects: Compile & Link Program
2208 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2209 const GLchar
* const *strings
)
2211 GET_CURRENT_CONTEXT(ctx
);
2213 const GLuint shader
= create_shader(ctx
, type
);
2217 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2218 * GL_INVALID_VALUE should be generated if count < 0
2221 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2226 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2228 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2229 _mesa_compile_shader(ctx
, sh
);
2231 program
= create_shader_program(ctx
);
2233 struct gl_shader_program
*shProg
;
2234 GLint compiled
= GL_FALSE
;
2236 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2238 shProg
->SeparateShader
= GL_TRUE
;
2240 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2242 attach_shader(ctx
, program
, shader
);
2243 _mesa_link_program(ctx
, shProg
);
2244 detach_shader(ctx
, program
, shader
);
2248 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2249 append
-error
-to
-info
-log
;
2250 shProg
->data
->LinkStatus
= GL_FALSE
;
2255 ralloc_strcat(&shProg
->data
->InfoLog
, sh
->InfoLog
);
2258 delete_shader(ctx
, shader
);
2266 * For GL_ARB_tessellation_shader
2268 extern void GLAPIENTRY
2269 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2271 GET_CURRENT_CONTEXT(ctx
);
2273 if (!_mesa_has_tessellation(ctx
)) {
2274 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2278 if (pname
!= GL_PATCH_VERTICES
) {
2279 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2283 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2284 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2288 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2292 extern void GLAPIENTRY
2293 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2295 GET_CURRENT_CONTEXT(ctx
);
2297 if (!_mesa_has_tessellation(ctx
)) {
2298 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2303 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2304 FLUSH_VERTICES(ctx
, 0);
2305 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2306 4 * sizeof(GLfloat
));
2307 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2309 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2310 FLUSH_VERTICES(ctx
, 0);
2311 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2312 2 * sizeof(GLfloat
));
2313 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2316 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2322 * ARB_shader_subroutine
2325 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2328 GET_CURRENT_CONTEXT(ctx
);
2329 const char *api_name
= "glGetSubroutineUniformLocation";
2330 struct gl_shader_program
*shProg
;
2331 GLenum resource_type
;
2332 gl_shader_stage stage
;
2334 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2335 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2339 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2340 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2344 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2348 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2349 if (!shProg
->_LinkedShaders
[stage
]) {
2350 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2354 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2355 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2359 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2362 GET_CURRENT_CONTEXT(ctx
);
2363 const char *api_name
= "glGetSubroutineIndex";
2364 struct gl_shader_program
*shProg
;
2365 struct gl_program_resource
*res
;
2366 GLenum resource_type
;
2367 gl_shader_stage stage
;
2369 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2370 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2374 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2375 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2379 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2383 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2384 if (!shProg
->_LinkedShaders
[stage
]) {
2385 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2389 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2390 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2395 return _mesa_program_resource_index(shProg
, res
);
2400 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2401 GLuint index
, GLenum pname
, GLint
*values
)
2403 GET_CURRENT_CONTEXT(ctx
);
2404 const char *api_name
= "glGetActiveSubroutineUniformiv";
2405 struct gl_shader_program
*shProg
;
2406 struct gl_linked_shader
*sh
;
2407 gl_shader_stage stage
;
2408 struct gl_program_resource
*res
;
2409 const struct gl_uniform_storage
*uni
;
2410 GLenum resource_type
;
2413 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2414 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2418 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2419 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2423 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2427 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2428 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2430 sh
= shProg
->_LinkedShaders
[stage
];
2432 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2436 if (index
>= sh
->NumSubroutineUniforms
) {
2437 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2442 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2443 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2446 values
[0] = uni
->num_compatible_subroutines
;
2450 case GL_COMPATIBLE_SUBROUTINES
: {
2451 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2455 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2456 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2457 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2458 if (fn
->types
[j
] == uni
->type
) {
2459 values
[count
++] = i
;
2467 case GL_UNIFORM_SIZE
:
2468 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2471 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2474 case GL_UNIFORM_NAME_LENGTH
:
2475 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2477 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2478 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2482 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2489 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2490 GLuint index
, GLsizei bufsize
,
2491 GLsizei
*length
, GLchar
*name
)
2493 GET_CURRENT_CONTEXT(ctx
);
2494 const char *api_name
= "glGetActiveSubroutineUniformName";
2495 struct gl_shader_program
*shProg
;
2496 GLenum resource_type
;
2497 gl_shader_stage stage
;
2499 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2500 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2504 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2505 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2509 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2513 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2514 if (!shProg
->_LinkedShaders
[stage
]) {
2515 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2519 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2520 /* get program resource name */
2521 _mesa_get_program_resource_name(shProg
, resource_type
,
2523 length
, name
, api_name
);
2528 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2529 GLuint index
, GLsizei bufsize
,
2530 GLsizei
*length
, GLchar
*name
)
2532 GET_CURRENT_CONTEXT(ctx
);
2533 const char *api_name
= "glGetActiveSubroutineName";
2534 struct gl_shader_program
*shProg
;
2535 GLenum resource_type
;
2536 gl_shader_stage stage
;
2538 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2539 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2543 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2544 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2548 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2552 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2553 if (!shProg
->_LinkedShaders
[stage
]) {
2554 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2557 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2558 _mesa_get_program_resource_name(shProg
, resource_type
,
2560 length
, name
, api_name
);
2564 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2565 const GLuint
*indices
)
2567 GET_CURRENT_CONTEXT(ctx
);
2568 const char *api_name
= "glUniformSubroutinesuiv";
2569 struct gl_shader_program
*shProg
;
2570 struct gl_linked_shader
*sh
;
2571 gl_shader_stage stage
;
2574 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2575 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2579 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2580 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2584 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2585 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2587 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2591 sh
= shProg
->_LinkedShaders
[stage
];
2593 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2597 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2598 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2604 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2610 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2613 for (j
= i
; j
< i
+ uni_count
; j
++) {
2614 struct gl_subroutine_function
*subfn
= NULL
;
2615 if (indices
[j
] > sh
->MaxSubroutineFunctionIndex
) {
2616 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2620 for (f
= 0; f
< sh
->NumSubroutineFunctions
; f
++) {
2621 if (sh
->SubroutineFunctions
[f
].index
== indices
[j
])
2622 subfn
= &sh
->SubroutineFunctions
[f
];
2629 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2630 if (subfn
->types
[k
] == uni
->type
)
2633 if (k
== subfn
->num_compat_types
) {
2634 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2638 ctx
->SubroutineIndex
[sh
->Stage
].IndexPtr
[j
] = indices
[j
];
2643 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2648 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2651 GET_CURRENT_CONTEXT(ctx
);
2652 const char *api_name
= "glGetUniformSubroutineuiv";
2653 struct gl_shader_program
*shProg
;
2654 struct gl_linked_shader
*sh
;
2655 gl_shader_stage stage
;
2657 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2658 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2662 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2663 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2667 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2668 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2670 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2674 sh
= shProg
->_LinkedShaders
[stage
];
2676 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2680 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2681 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2685 *params
= ctx
->SubroutineIndex
[sh
->Stage
].IndexPtr
[location
];
2690 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2691 GLenum pname
, GLint
*values
)
2693 GET_CURRENT_CONTEXT(ctx
);
2694 const char *api_name
= "glGetProgramStageiv";
2695 struct gl_shader_program
*shProg
;
2696 struct gl_linked_shader
*sh
;
2697 gl_shader_stage stage
;
2699 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2700 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2704 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2705 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2709 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2713 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2714 sh
= shProg
->_LinkedShaders
[stage
];
2716 /* ARB_shader_subroutine doesn't ask the program to be linked, or list any
2717 * INVALID_OPERATION in the case of not be linked.
2719 * And for some pnames, like GL_ACTIVE_SUBROUTINE_UNIFORMS, you can ask the
2720 * same info using other specs (ARB_program_interface_query), without the
2721 * need of the program to be linked, being the value for that case 0.
2723 * But at the same time, some other methods require the program to be
2724 * linked for pname related to locations, so it would be inconsistent to
2725 * not do the same here. So we are:
2726 * * Return GL_INVALID_OPERATION if not linked only for locations.
2727 * * Setting a default value of 0, to be returned if not linked.
2731 if (pname
== GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
) {
2732 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2738 case GL_ACTIVE_SUBROUTINES
:
2739 values
[0] = sh
->NumSubroutineFunctions
;
2741 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2742 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2744 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2745 values
[0] = sh
->NumSubroutineUniforms
;
2747 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2751 GLenum resource_type
;
2752 struct gl_program_resource
*res
;
2754 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2755 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2756 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2758 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2763 values
[0] = max_len
;
2766 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2770 GLenum resource_type
;
2771 struct gl_program_resource
*res
;
2773 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2774 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2775 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2777 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2778 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2784 values
[0] = max_len
;
2788 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2795 find_compat_subroutine(struct gl_linked_shader
*sh
,
2796 const struct glsl_type
*type
)
2800 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2801 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2802 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2803 if (fn
->types
[j
] == type
)
2811 _mesa_shader_write_subroutine_index(struct gl_context
*ctx
,
2812 struct gl_linked_shader
*sh
)
2816 if (sh
->NumSubroutineUniformRemapTable
== 0)
2821 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2830 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2831 for (j
= 0; j
< uni_count
; j
++) {
2832 val
= ctx
->SubroutineIndex
[sh
->Stage
].IndexPtr
[i
+ j
];
2833 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2836 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2838 } while(i
< sh
->NumSubroutineUniformRemapTable
);
2842 _mesa_shader_write_subroutine_indices(struct gl_context
*ctx
,
2843 gl_shader_stage stage
)
2845 if (ctx
->_Shader
->CurrentProgram
[stage
] &&
2846 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
])
2847 _mesa_shader_write_subroutine_index(ctx
,
2848 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
]);
2852 _mesa_shader_init_subroutine_defaults(struct gl_context
*ctx
,
2853 struct gl_linked_shader
*sh
)
2856 struct gl_subroutine_index_binding
*binding
= &ctx
->SubroutineIndex
[sh
->Stage
];
2857 if (binding
->NumIndex
!= sh
->NumSubroutineUniformRemapTable
) {
2858 binding
->IndexPtr
= realloc(binding
->IndexPtr
,
2859 sh
->NumSubroutineUniformRemapTable
* (sizeof(GLuint
)));
2860 binding
->NumIndex
= sh
->NumSubroutineUniformRemapTable
;
2863 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2864 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2869 binding
->IndexPtr
[i
] = find_compat_subroutine(sh
, uni
->type
);
2874 _mesa_shader_program_init_subroutine_defaults(struct gl_context
*ctx
,
2875 struct gl_shader_program
*shProg
)
2882 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2883 if (!shProg
->_LinkedShaders
[i
])
2886 _mesa_shader_init_subroutine_defaults(ctx
, shProg
->_LinkedShaders
[i
]);