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
->data
->Version
/ 100, shProg
->data
->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
++) {
1153 printf(" %s shader %u, checksum %u\n",
1154 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1155 shProg
->Shaders
[i
]->Name
,
1156 shProg
->Shaders
[i
]->SourceChecksum
);
1158 printf(" %s shader %u\n",
1159 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1160 shProg
->Shaders
[i
]->Name
);
1163 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1164 printf(" vert prog %u\n",
1165 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1166 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1167 printf(" frag prog %u\n",
1168 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1169 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1170 printf(" geom prog %u\n",
1171 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1172 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1173 printf(" tesc prog %u\n",
1174 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1175 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1176 printf(" tese prog %u\n",
1177 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1182 * Use the named shader program for subsequent glUniform calls
1185 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1188 if ((shProg
!= NULL
) && !shProg
->data
->LinkStatus
) {
1189 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1190 "%s(program %u not linked)", caller
, shProg
->Name
);
1194 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1195 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1201 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1202 struct gl_shader_program
*shProg
,
1203 struct gl_pipeline_object
*shTarget
)
1205 struct gl_shader_program
**target
;
1207 target
= &shTarget
->CurrentProgram
[stage
];
1208 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1212 _mesa_shader_program_init_subroutine_defaults(ctx
, shProg
);
1214 if (*target
!= shProg
) {
1215 /* Program is current, flush it */
1216 if (shTarget
== ctx
->_Shader
) {
1217 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1220 /* If the shader is also bound as the current rendering shader, unbind
1221 * it from that binding point as well. This ensures that the correct
1222 * semantics of glDeleteProgram are maintained.
1225 case MESA_SHADER_VERTEX
:
1226 case MESA_SHADER_TESS_CTRL
:
1227 case MESA_SHADER_TESS_EVAL
:
1228 case MESA_SHADER_GEOMETRY
:
1229 case MESA_SHADER_COMPUTE
:
1230 /* Empty for now. */
1232 case MESA_SHADER_FRAGMENT
:
1233 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1234 _mesa_reference_shader_program(ctx
,
1235 &ctx
->_Shader
->_CurrentFragmentProgram
,
1241 _mesa_reference_shader_program(ctx
, target
, shProg
);
1248 * Use the named shader program for subsequent rendering.
1251 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1254 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1255 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1256 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1261 * Do validation of the given shader program.
1262 * \param errMsg returns error message if validation fails.
1263 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1266 validate_shader_program(const struct gl_shader_program
*shProg
,
1269 if (!shProg
->data
->LinkStatus
) {
1273 /* From the GL spec, a program is invalid if any of these are true:
1275 any two active samplers in the current program object are of
1276 different types, but refer to the same texture image unit,
1278 any active sampler in the current program object refers to a texture
1279 image unit where fixed-function fragment processing accesses a
1280 texture target that does not match the sampler type, or
1282 the sum of the number of active samplers in the program and the
1283 number of texture image units enabled for fixed-function fragment
1284 processing exceeds the combined limit on the total number of texture
1285 image units allowed.
1289 * Check: any two active samplers in the current program object are of
1290 * different types, but refer to the same texture image unit,
1292 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1300 * Called via glValidateProgram()
1303 validate_program(struct gl_context
*ctx
, GLuint program
)
1305 struct gl_shader_program
*shProg
;
1306 char errMsg
[100] = "";
1308 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1313 shProg
->data
->Validated
= validate_shader_program(shProg
, errMsg
);
1314 if (!shProg
->data
->Validated
) {
1315 /* update info log */
1316 if (shProg
->data
->InfoLog
) {
1317 ralloc_free(shProg
->data
->InfoLog
);
1319 shProg
->data
->InfoLog
= ralloc_strdup(shProg
->data
, errMsg
);
1326 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1328 GET_CURRENT_CONTEXT(ctx
);
1329 attach_shader(ctx
, program
, shader
);
1334 _mesa_AttachShader(GLuint program
, GLuint shader
)
1336 GET_CURRENT_CONTEXT(ctx
);
1337 attach_shader(ctx
, program
, shader
);
1342 _mesa_CompileShader(GLuint shaderObj
)
1344 GET_CURRENT_CONTEXT(ctx
);
1345 if (MESA_VERBOSE
& VERBOSE_API
)
1346 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1347 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1348 "glCompileShader"));
1353 _mesa_CreateShader(GLenum type
)
1355 GET_CURRENT_CONTEXT(ctx
);
1356 if (MESA_VERBOSE
& VERBOSE_API
)
1357 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1358 return create_shader(ctx
, type
);
1362 GLhandleARB GLAPIENTRY
1363 _mesa_CreateShaderObjectARB(GLenum type
)
1365 GET_CURRENT_CONTEXT(ctx
);
1366 return create_shader(ctx
, type
);
1371 _mesa_CreateProgram(void)
1373 GET_CURRENT_CONTEXT(ctx
);
1374 if (MESA_VERBOSE
& VERBOSE_API
)
1375 _mesa_debug(ctx
, "glCreateProgram\n");
1376 return create_shader_program(ctx
);
1380 GLhandleARB GLAPIENTRY
1381 _mesa_CreateProgramObjectARB(void)
1383 GET_CURRENT_CONTEXT(ctx
);
1384 return create_shader_program(ctx
);
1389 _mesa_DeleteObjectARB(GLhandleARB obj
)
1391 if (MESA_VERBOSE
& VERBOSE_API
) {
1392 GET_CURRENT_CONTEXT(ctx
);
1393 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1397 GET_CURRENT_CONTEXT(ctx
);
1398 FLUSH_VERTICES(ctx
, 0);
1399 if (is_program(ctx
, obj
)) {
1400 delete_shader_program(ctx
, obj
);
1402 else if (is_shader(ctx
, obj
)) {
1403 delete_shader(ctx
, obj
);
1413 _mesa_DeleteProgram(GLuint name
)
1416 GET_CURRENT_CONTEXT(ctx
);
1417 FLUSH_VERTICES(ctx
, 0);
1418 delete_shader_program(ctx
, name
);
1424 _mesa_DeleteShader(GLuint name
)
1427 GET_CURRENT_CONTEXT(ctx
);
1428 FLUSH_VERTICES(ctx
, 0);
1429 delete_shader(ctx
, name
);
1435 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1437 GET_CURRENT_CONTEXT(ctx
);
1438 detach_shader(ctx
, program
, shader
);
1443 _mesa_DetachShader(GLuint program
, GLuint shader
)
1445 GET_CURRENT_CONTEXT(ctx
);
1446 detach_shader(ctx
, program
, shader
);
1451 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1452 GLsizei
* count
, GLhandleARB
* obj
)
1454 GET_CURRENT_CONTEXT(ctx
);
1455 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1460 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1461 GLsizei
*count
, GLuint
*obj
)
1463 GET_CURRENT_CONTEXT(ctx
);
1464 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1469 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1470 GLcharARB
* infoLog
)
1472 GET_CURRENT_CONTEXT(ctx
);
1473 if (is_program(ctx
, object
)) {
1474 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1476 else if (is_shader(ctx
, object
)) {
1477 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1480 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1486 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1488 GET_CURRENT_CONTEXT(ctx
);
1489 /* Implement in terms of GetProgramiv, GetShaderiv */
1490 if (is_program(ctx
, object
)) {
1491 if (pname
== GL_OBJECT_TYPE_ARB
) {
1492 *params
= GL_PROGRAM_OBJECT_ARB
;
1495 get_programiv(ctx
, object
, pname
, params
);
1498 else if (is_shader(ctx
, object
)) {
1499 if (pname
== GL_OBJECT_TYPE_ARB
) {
1500 *params
= GL_SHADER_OBJECT_ARB
;
1503 get_shaderiv(ctx
, object
, pname
, params
);
1507 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1513 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1516 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1517 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1518 params
[0] = (GLfloat
) iparams
[0];
1523 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1525 GET_CURRENT_CONTEXT(ctx
);
1526 get_programiv(ctx
, program
, pname
, params
);
1531 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1533 GET_CURRENT_CONTEXT(ctx
);
1534 get_shaderiv(ctx
, shader
, pname
, params
);
1539 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1540 GLsizei
*length
, GLchar
*infoLog
)
1542 GET_CURRENT_CONTEXT(ctx
);
1543 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1548 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1549 GLsizei
*length
, GLchar
*infoLog
)
1551 GET_CURRENT_CONTEXT(ctx
);
1552 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1557 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1558 GLsizei
*length
, GLchar
*sourceOut
)
1560 GET_CURRENT_CONTEXT(ctx
);
1561 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1565 GLhandleARB GLAPIENTRY
1566 _mesa_GetHandleARB(GLenum pname
)
1568 GET_CURRENT_CONTEXT(ctx
);
1569 return get_handle(ctx
, pname
);
1573 GLboolean GLAPIENTRY
1574 _mesa_IsProgram(GLuint name
)
1576 GET_CURRENT_CONTEXT(ctx
);
1577 return is_program(ctx
, name
);
1581 GLboolean GLAPIENTRY
1582 _mesa_IsShader(GLuint name
)
1584 GET_CURRENT_CONTEXT(ctx
);
1585 return is_shader(ctx
, name
);
1590 _mesa_LinkProgram(GLuint programObj
)
1592 GET_CURRENT_CONTEXT(ctx
);
1593 if (MESA_VERBOSE
& VERBOSE_API
)
1594 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1595 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1599 #if defined(HAVE_SHA1)
1601 * Generate a SHA-1 hash value string for given source string.
1604 generate_sha1(const char *source
, char sha_str
[64])
1606 unsigned char sha
[20];
1607 _mesa_sha1_compute(source
, strlen(source
), sha
);
1608 _mesa_sha1_format(sha_str
, sha
);
1612 * Construct a full path for shader replacement functionality using
1615 * <path>/<stage prefix>_<CHECKSUM>.glsl
1618 construct_name(const gl_shader_stage stage
, const char *source
,
1622 static const char *types
[] = {
1623 "VS", "TC", "TE", "GS", "FS", "CS",
1626 generate_sha1(source
, sha
);
1627 return ralloc_asprintf(NULL
, "%s/%s_%s.glsl", path
, types
[stage
], sha
);
1631 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1634 dump_shader(const gl_shader_stage stage
, const char *source
)
1636 static bool path_exists
= true;
1643 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1645 path_exists
= false;
1649 char *name
= construct_name(stage
, source
, dump_path
);
1651 f
= fopen(name
, "w");
1656 GET_CURRENT_CONTEXT(ctx
);
1657 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1664 * Read shader source code from a file.
1665 * Useful for debugging to override an app's shader.
1668 read_shader(const gl_shader_stage stage
, const char *source
)
1671 static bool path_exists
= true;
1672 int len
, shader_size
= 0;
1679 read_path
= getenv("MESA_SHADER_READ_PATH");
1681 path_exists
= false;
1685 char *name
= construct_name(stage
, source
, read_path
);
1686 f
= fopen(name
, "r");
1691 /* allocate enough room for the entire shader */
1692 fseek(f
, 0, SEEK_END
);
1693 shader_size
= ftell(f
);
1695 assert(shader_size
);
1697 /* add one for terminating zero */
1700 buffer
= malloc(shader_size
);
1703 len
= fread(buffer
, 1, shader_size
, f
);
1710 #endif /* HAVE_SHA1 */
1713 * Called via glShaderSource() and glShaderSourceARB() API functions.
1714 * Basically, concatenate the source code strings into one long string
1715 * and pass it to _mesa_shader_source().
1718 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1719 const GLchar
* const * string
, const GLint
* length
)
1721 GET_CURRENT_CONTEXT(ctx
);
1723 GLsizei i
, totalLength
;
1725 struct gl_shader
*sh
;
1727 #if defined(HAVE_SHA1)
1728 GLcharARB
*replacement
;
1729 #endif /* HAVE_SHA1 */
1731 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1735 if (string
== NULL
) {
1736 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1741 * This array holds offsets of where the appropriate string ends, thus the
1742 * last element will be set to the total length of the source code.
1744 offsets
= malloc(count
* sizeof(GLint
));
1745 if (offsets
== NULL
) {
1746 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1750 for (i
= 0; i
< count
; i
++) {
1751 if (string
[i
] == NULL
) {
1752 free((GLvoid
*) offsets
);
1753 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1754 "glShaderSourceARB(null string)");
1757 if (length
== NULL
|| length
[i
] < 0)
1758 offsets
[i
] = strlen(string
[i
]);
1760 offsets
[i
] = length
[i
];
1761 /* accumulate string lengths */
1763 offsets
[i
] += offsets
[i
- 1];
1766 /* Total length of source string is sum off all strings plus two.
1767 * One extra byte for terminating zero, another extra byte to silence
1768 * valgrind warnings in the parser/grammer code.
1770 totalLength
= offsets
[count
- 1] + 2;
1771 source
= malloc(totalLength
* sizeof(GLcharARB
));
1772 if (source
== NULL
) {
1773 free((GLvoid
*) offsets
);
1774 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1778 for (i
= 0; i
< count
; i
++) {
1779 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1780 memcpy(source
+ start
, string
[i
],
1781 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1783 source
[totalLength
- 1] = '\0';
1784 source
[totalLength
- 2] = '\0';
1786 #if defined(HAVE_SHA1)
1787 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1788 * if corresponding entry found from MESA_SHADER_READ_PATH.
1790 dump_shader(sh
->Stage
, source
);
1792 replacement
= read_shader(sh
->Stage
, source
);
1795 source
= replacement
;
1797 #endif /* HAVE_SHA1 */
1799 shader_source(sh
, source
);
1806 _mesa_UseProgram(GLuint program
)
1808 GET_CURRENT_CONTEXT(ctx
);
1809 struct gl_shader_program
*shProg
;
1811 if (MESA_VERBOSE
& VERBOSE_API
)
1812 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1814 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1815 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1816 "glUseProgram(transform feedback active)");
1821 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1825 if (!shProg
->data
->LinkStatus
) {
1826 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1827 "glUseProgram(program %u not linked)", program
);
1832 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1833 print_shader_info(shProg
);
1840 /* The ARB_separate_shader_object spec says:
1842 * "The executable code for an individual shader stage is taken from
1843 * the current program for that stage. If there is a current program
1844 * object established by UseProgram, that program is considered current
1845 * for all stages. Otherwise, if there is a bound program pipeline
1846 * object (section 2.14.PPO), the program bound to the appropriate
1847 * stage of the pipeline object is considered current."
1850 /* Attach shader state to the binding point */
1851 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1852 /* Update the program */
1853 _mesa_use_program(ctx
, shProg
);
1855 /* Must be done first: detach the progam */
1856 _mesa_use_program(ctx
, shProg
);
1857 /* Unattach shader_state binding point */
1858 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1859 /* If a pipeline was bound, rebind it */
1860 if (ctx
->Pipeline
.Current
) {
1861 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1868 _mesa_ValidateProgram(GLuint program
)
1870 GET_CURRENT_CONTEXT(ctx
);
1871 validate_program(ctx
, program
);
1876 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1879 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1880 GLint
* range
, GLint
* precision
)
1882 const struct gl_program_constants
*limits
;
1883 const struct gl_precision
*p
;
1884 GET_CURRENT_CONTEXT(ctx
);
1886 switch (shadertype
) {
1887 case GL_VERTEX_SHADER
:
1888 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1890 case GL_FRAGMENT_SHADER
:
1891 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1894 _mesa_error(ctx
, GL_INVALID_ENUM
,
1895 "glGetShaderPrecisionFormat(shadertype)");
1899 switch (precisiontype
) {
1901 p
= &limits
->LowFloat
;
1903 case GL_MEDIUM_FLOAT
:
1904 p
= &limits
->MediumFloat
;
1907 p
= &limits
->HighFloat
;
1910 p
= &limits
->LowInt
;
1913 p
= &limits
->MediumInt
;
1916 p
= &limits
->HighInt
;
1919 _mesa_error(ctx
, GL_INVALID_ENUM
,
1920 "glGetShaderPrecisionFormat(precisiontype)");
1924 range
[0] = p
->RangeMin
;
1925 range
[1] = p
->RangeMax
;
1926 precision
[0] = p
->Precision
;
1931 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1934 _mesa_ReleaseShaderCompiler(void)
1936 _mesa_destroy_shader_compiler_caches();
1941 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1944 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1945 const void* binary
, GLint length
)
1947 GET_CURRENT_CONTEXT(ctx
);
1949 (void) binaryformat
;
1952 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1953 * page 88 of the OpenGL 4.5 specs state:
1955 * "An INVALID_VALUE error is generated if count or length is negative.
1956 * An INVALID_ENUM error is generated if binaryformat is not a supported
1957 * format returned in SHADER_BINARY_FORMATS."
1959 if (n
< 0 || length
< 0) {
1960 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1964 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1969 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1970 GLenum
*binaryFormat
, GLvoid
*binary
)
1972 struct gl_shader_program
*shProg
;
1973 GLsizei length_dummy
;
1974 GET_CURRENT_CONTEXT(ctx
);
1977 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1981 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1985 /* The ARB_get_program_binary spec says:
1987 * "If <length> is NULL, then no length is returned."
1989 * Ensure that length always points to valid storage to avoid multiple NULL
1990 * pointer checks below.
1993 length
= &length_dummy
;
1996 /* The ARB_get_program_binary spec says:
1998 * "When a program object's LINK_STATUS is FALSE, its program binary
1999 * length is zero, and a call to GetProgramBinary will generate an
2000 * INVALID_OPERATION error.
2002 if (!shProg
->data
->LinkStatus
) {
2003 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2004 "glGetProgramBinary(program %u not linked)",
2011 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2012 "glGetProgramBinary(driver supports zero binary formats)");
2014 (void) binaryFormat
;
2019 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
2020 const GLvoid
*binary
, GLsizei length
)
2022 struct gl_shader_program
*shProg
;
2023 GET_CURRENT_CONTEXT(ctx
);
2025 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
2029 (void) binaryFormat
;
2032 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2034 * "If a negative number is provided where an argument of type sizei or
2035 * sizeiptr is specified, an INVALID_VALUE error is generated."
2038 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
2042 /* The ARB_get_program_binary spec says:
2044 * "<binaryFormat> and <binary> must be those returned by a previous
2045 * call to GetProgramBinary, and <length> must be the length of the
2046 * program binary as returned by GetProgramBinary or GetProgramiv with
2047 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2048 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2051 * Since any value of binaryFormat passed "is not one of those specified as
2052 * allowable for [this] command, an INVALID_ENUM error is generated."
2054 shProg
->data
->LinkStatus
= GL_FALSE
;
2055 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
2060 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
2062 struct gl_shader_program
*shProg
;
2063 GET_CURRENT_CONTEXT(ctx
);
2065 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
2066 "glProgramParameteri");
2071 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
2072 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2073 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2074 * even be in the dispatch table, so we shouldn't need to expclicitly
2077 * On desktop, we ignore the 3.0+ requirement because it is silly.
2080 /* The ARB_get_program_binary extension spec says:
2082 * "An INVALID_VALUE error is generated if the <value> argument to
2083 * ProgramParameteri is not TRUE or FALSE."
2085 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2089 /* No need to notify the driver. Any changes will actually take effect
2090 * the next time the shader is linked.
2092 * The ARB_get_program_binary extension spec says:
2094 * "To indicate that a program binary is likely to be retrieved,
2095 * ProgramParameteri should be called with <pname>
2096 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2097 * will not be in effect until the next time LinkProgram or
2098 * ProgramBinary has been called successfully."
2100 * The resloution of issue 9 in the extension spec also says:
2102 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2103 * to indicate to the GL implementation that this program will
2104 * likely be saved with GetProgramBinary at some point. This will
2105 * give the GL implementation the opportunity to track any state
2106 * changes made to the program before being saved such that when it
2107 * is loaded again a recompile can be avoided."
2109 shProg
->BinaryRetreivableHint
= value
;
2112 case GL_PROGRAM_SEPARABLE
:
2113 /* Spec imply that the behavior is the same as ARB_get_program_binary
2114 * Chapter 7.3 Program Objects
2116 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2119 shProg
->SeparateShader
= value
;
2123 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2124 _mesa_enum_to_string(pname
));
2129 _mesa_error(ctx
, GL_INVALID_VALUE
,
2130 "glProgramParameteri(pname=%s, value=%d): "
2131 "value must be 0 or 1.",
2132 _mesa_enum_to_string(pname
),
2138 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2139 struct gl_shader_program
*shProg
,
2140 struct gl_pipeline_object
*shTarget
)
2142 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2143 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2148 * Copy program-specific data generated by linking from the gl_shader_program
2149 * object to the gl_program object referred to by the gl_linked_shader.
2151 * This function expects _mesa_reference_program() to have been previously
2152 * called setting the gl_linked_shaders program reference.
2155 _mesa_copy_linked_program_data(const struct gl_shader_program
*src
,
2156 struct gl_linked_shader
*dst_sh
)
2158 assert(dst_sh
->Program
);
2160 struct gl_program
*dst
= dst_sh
->Program
;
2162 dst
->info
.num_images
= dst_sh
->NumImages
;
2164 switch (dst_sh
->Stage
) {
2165 case MESA_SHADER_VERTEX
:
2166 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2167 dst
->CullDistanceArraySize
= src
->Vert
.CullDistanceArraySize
;
2169 case MESA_SHADER_TESS_CTRL
: {
2170 dst
->info
.tcs
.vertices_out
= dst_sh
->info
.TessCtrl
.VerticesOut
;
2173 case MESA_SHADER_TESS_EVAL
: {
2174 dst
->info
.tes
.primitive_mode
= dst_sh
->info
.TessEval
.PrimitiveMode
;
2175 dst
->info
.tes
.spacing
= dst_sh
->info
.TessEval
.Spacing
;
2176 dst
->info
.tes
.vertex_order
= dst_sh
->info
.TessEval
.VertexOrder
;
2177 dst
->info
.tes
.point_mode
= dst_sh
->info
.TessEval
.PointMode
;
2178 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2179 dst
->CullDistanceArraySize
= src
->TessEval
.CullDistanceArraySize
;
2182 case MESA_SHADER_GEOMETRY
: {
2183 dst
->info
.gs
.vertices_in
= src
->Geom
.VerticesIn
;
2184 dst
->info
.gs
.vertices_out
= dst_sh
->info
.Geom
.VerticesOut
;
2185 dst
->info
.gs
.invocations
= dst_sh
->info
.Geom
.Invocations
;
2186 dst
->info
.gs
.input_primitive
= dst_sh
->info
.Geom
.InputType
;
2187 dst
->info
.gs
.output_primitive
= dst_sh
->info
.Geom
.OutputType
;
2188 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2189 dst
->CullDistanceArraySize
= src
->Geom
.CullDistanceArraySize
;
2190 dst
->info
.gs
.uses_end_primitive
= src
->Geom
.UsesEndPrimitive
;
2191 dst
->info
.gs
.uses_streams
= src
->Geom
.UsesStreams
;
2194 case MESA_SHADER_FRAGMENT
: {
2195 dst
->info
.fs
.depth_layout
= src
->FragDepthLayout
;
2196 dst
->info
.fs
.early_fragment_tests
= dst_sh
->info
.EarlyFragmentTests
;
2197 dst
->info
.fs
.inner_coverage
= dst_sh
->info
.InnerCoverage
;
2198 dst
->info
.fs
.post_depth_coverage
= dst_sh
->info
.PostDepthCoverage
;
2201 case MESA_SHADER_COMPUTE
: {
2202 for (int i
= 0; i
< 3; i
++)
2203 dst
->info
.cs
.local_size
[i
] = src
->Comp
.LocalSize
[i
];
2204 dst
->info
.cs
.shared_size
= src
->Comp
.SharedSize
;
2213 * ARB_separate_shader_objects: Compile & Link Program
2216 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2217 const GLchar
* const *strings
)
2219 GET_CURRENT_CONTEXT(ctx
);
2221 const GLuint shader
= create_shader(ctx
, type
);
2225 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2226 * GL_INVALID_VALUE should be generated if count < 0
2229 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2234 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2236 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2237 _mesa_compile_shader(ctx
, sh
);
2239 program
= create_shader_program(ctx
);
2241 struct gl_shader_program
*shProg
;
2242 GLint compiled
= GL_FALSE
;
2244 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2246 shProg
->SeparateShader
= GL_TRUE
;
2248 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2250 attach_shader(ctx
, program
, shader
);
2251 _mesa_link_program(ctx
, shProg
);
2252 detach_shader(ctx
, program
, shader
);
2256 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2257 append
-error
-to
-info
-log
;
2258 shProg
->data
->LinkStatus
= GL_FALSE
;
2263 ralloc_strcat(&shProg
->data
->InfoLog
, sh
->InfoLog
);
2266 delete_shader(ctx
, shader
);
2274 * For GL_ARB_tessellation_shader
2276 extern void GLAPIENTRY
2277 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2279 GET_CURRENT_CONTEXT(ctx
);
2281 if (!_mesa_has_tessellation(ctx
)) {
2282 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2286 if (pname
!= GL_PATCH_VERTICES
) {
2287 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2291 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2292 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2296 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2300 extern void GLAPIENTRY
2301 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2303 GET_CURRENT_CONTEXT(ctx
);
2305 if (!_mesa_has_tessellation(ctx
)) {
2306 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2311 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2312 FLUSH_VERTICES(ctx
, 0);
2313 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2314 4 * sizeof(GLfloat
));
2315 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2317 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2318 FLUSH_VERTICES(ctx
, 0);
2319 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2320 2 * sizeof(GLfloat
));
2321 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2324 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2330 * ARB_shader_subroutine
2333 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2336 GET_CURRENT_CONTEXT(ctx
);
2337 const char *api_name
= "glGetSubroutineUniformLocation";
2338 struct gl_shader_program
*shProg
;
2339 GLenum resource_type
;
2340 gl_shader_stage stage
;
2342 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2343 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2347 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2348 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2352 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2356 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2357 if (!shProg
->_LinkedShaders
[stage
]) {
2358 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2362 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2363 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2367 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2370 GET_CURRENT_CONTEXT(ctx
);
2371 const char *api_name
= "glGetSubroutineIndex";
2372 struct gl_shader_program
*shProg
;
2373 struct gl_program_resource
*res
;
2374 GLenum resource_type
;
2375 gl_shader_stage stage
;
2377 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2378 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2382 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2383 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2387 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2391 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2392 if (!shProg
->_LinkedShaders
[stage
]) {
2393 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2397 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2398 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2403 return _mesa_program_resource_index(shProg
, res
);
2408 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2409 GLuint index
, GLenum pname
, GLint
*values
)
2411 GET_CURRENT_CONTEXT(ctx
);
2412 const char *api_name
= "glGetActiveSubroutineUniformiv";
2413 struct gl_shader_program
*shProg
;
2414 struct gl_linked_shader
*sh
;
2415 gl_shader_stage stage
;
2416 struct gl_program_resource
*res
;
2417 const struct gl_uniform_storage
*uni
;
2418 GLenum resource_type
;
2421 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2422 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2426 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2427 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2431 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2435 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2436 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2438 sh
= shProg
->_LinkedShaders
[stage
];
2440 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2444 struct gl_program
*p
= shProg
->_LinkedShaders
[stage
]->Program
;
2445 if (index
>= p
->sh
.NumSubroutineUniforms
) {
2446 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2451 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2452 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2455 values
[0] = uni
->num_compatible_subroutines
;
2459 case GL_COMPATIBLE_SUBROUTINES
: {
2460 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2464 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2465 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2466 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2467 if (fn
->types
[j
] == uni
->type
) {
2468 values
[count
++] = i
;
2476 case GL_UNIFORM_SIZE
:
2477 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2480 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2483 case GL_UNIFORM_NAME_LENGTH
:
2484 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2486 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2487 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2491 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2498 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2499 GLuint index
, GLsizei bufsize
,
2500 GLsizei
*length
, GLchar
*name
)
2502 GET_CURRENT_CONTEXT(ctx
);
2503 const char *api_name
= "glGetActiveSubroutineUniformName";
2504 struct gl_shader_program
*shProg
;
2505 GLenum resource_type
;
2506 gl_shader_stage stage
;
2508 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2509 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2513 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2514 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2518 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2522 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2523 if (!shProg
->_LinkedShaders
[stage
]) {
2524 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2528 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2529 /* get program resource name */
2530 _mesa_get_program_resource_name(shProg
, resource_type
,
2532 length
, name
, api_name
);
2537 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2538 GLuint index
, GLsizei bufsize
,
2539 GLsizei
*length
, GLchar
*name
)
2541 GET_CURRENT_CONTEXT(ctx
);
2542 const char *api_name
= "glGetActiveSubroutineName";
2543 struct gl_shader_program
*shProg
;
2544 GLenum resource_type
;
2545 gl_shader_stage stage
;
2547 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2548 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2552 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2553 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2557 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2561 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2562 if (!shProg
->_LinkedShaders
[stage
]) {
2563 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2566 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2567 _mesa_get_program_resource_name(shProg
, resource_type
,
2569 length
, name
, api_name
);
2573 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2574 const GLuint
*indices
)
2576 GET_CURRENT_CONTEXT(ctx
);
2577 const char *api_name
= "glUniformSubroutinesuiv";
2578 struct gl_shader_program
*shProg
;
2579 struct gl_linked_shader
*sh
;
2580 gl_shader_stage stage
;
2583 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2584 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2588 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2589 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2593 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2594 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2596 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2600 sh
= shProg
->_LinkedShaders
[stage
];
2602 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2606 struct gl_program
*p
= shProg
->_LinkedShaders
[stage
]->Program
;
2607 if (count
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2608 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2614 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2620 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2623 for (j
= i
; j
< i
+ uni_count
; j
++) {
2624 struct gl_subroutine_function
*subfn
= NULL
;
2625 if (indices
[j
] > p
->sh
.MaxSubroutineFunctionIndex
) {
2626 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2630 for (f
= 0; f
< p
->sh
.NumSubroutineFunctions
; f
++) {
2631 if (p
->sh
.SubroutineFunctions
[f
].index
== indices
[j
])
2632 subfn
= &p
->sh
.SubroutineFunctions
[f
];
2639 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2640 if (subfn
->types
[k
] == uni
->type
)
2643 if (k
== subfn
->num_compat_types
) {
2644 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2648 ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[j
] = indices
[j
];
2653 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2658 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2661 GET_CURRENT_CONTEXT(ctx
);
2662 const char *api_name
= "glGetUniformSubroutineuiv";
2663 struct gl_shader_program
*shProg
;
2664 struct gl_linked_shader
*sh
;
2665 gl_shader_stage stage
;
2667 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2668 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2672 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2673 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2677 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2678 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2680 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2684 sh
= shProg
->_LinkedShaders
[stage
];
2686 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2690 struct gl_program
*p
= sh
->Program
;
2691 if (location
>= p
->sh
.NumSubroutineUniformRemapTable
) {
2692 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2696 *params
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[location
];
2701 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2702 GLenum pname
, GLint
*values
)
2704 GET_CURRENT_CONTEXT(ctx
);
2705 const char *api_name
= "glGetProgramStageiv";
2706 struct gl_shader_program
*shProg
;
2707 struct gl_linked_shader
*sh
;
2708 gl_shader_stage stage
;
2710 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2711 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2715 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2716 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2720 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2724 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2725 sh
= shProg
->_LinkedShaders
[stage
];
2727 /* ARB_shader_subroutine doesn't ask the program to be linked, or list any
2728 * INVALID_OPERATION in the case of not be linked.
2730 * And for some pnames, like GL_ACTIVE_SUBROUTINE_UNIFORMS, you can ask the
2731 * same info using other specs (ARB_program_interface_query), without the
2732 * need of the program to be linked, being the value for that case 0.
2734 * But at the same time, some other methods require the program to be
2735 * linked for pname related to locations, so it would be inconsistent to
2736 * not do the same here. So we are:
2737 * * Return GL_INVALID_OPERATION if not linked only for locations.
2738 * * Setting a default value of 0, to be returned if not linked.
2742 if (pname
== GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
) {
2743 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2748 struct gl_program
*p
= sh
->Program
;
2750 case GL_ACTIVE_SUBROUTINES
:
2751 values
[0] = p
->sh
.NumSubroutineFunctions
;
2753 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2754 values
[0] = p
->sh
.NumSubroutineUniformRemapTable
;
2756 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2757 values
[0] = p
->sh
.NumSubroutineUniforms
;
2759 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2763 GLenum resource_type
;
2764 struct gl_program_resource
*res
;
2766 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2767 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2768 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2770 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2775 values
[0] = max_len
;
2778 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2782 GLenum resource_type
;
2783 struct gl_program_resource
*res
;
2785 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2786 for (i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2787 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2789 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2790 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2796 values
[0] = max_len
;
2800 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2807 find_compat_subroutine(struct gl_program
*p
, const struct glsl_type
*type
)
2811 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2812 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2813 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2814 if (fn
->types
[j
] == type
)
2822 _mesa_shader_write_subroutine_index(struct gl_context
*ctx
,
2823 struct gl_program
*p
)
2827 if (p
->sh
.NumSubroutineUniformRemapTable
== 0)
2832 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2841 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2842 for (j
= 0; j
< uni_count
; j
++) {
2843 val
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[i
+ j
];
2844 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2847 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2849 } while(i
< p
->sh
.NumSubroutineUniformRemapTable
);
2853 _mesa_shader_write_subroutine_indices(struct gl_context
*ctx
,
2854 gl_shader_stage stage
)
2856 if (ctx
->_Shader
->CurrentProgram
[stage
] &&
2857 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
])
2858 _mesa_shader_write_subroutine_index(ctx
,
2859 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
]->Program
);
2863 _mesa_program_init_subroutine_defaults(struct gl_context
*ctx
,
2864 struct gl_program
*p
)
2868 struct gl_subroutine_index_binding
*binding
= &ctx
->SubroutineIndex
[p
->info
.stage
];
2869 if (binding
->NumIndex
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2870 binding
->IndexPtr
= realloc(binding
->IndexPtr
,
2871 p
->sh
.NumSubroutineUniformRemapTable
* (sizeof(GLuint
)));
2872 binding
->NumIndex
= p
->sh
.NumSubroutineUniformRemapTable
;
2875 for (int i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2876 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2881 binding
->IndexPtr
[i
] = find_compat_subroutine(p
, uni
->type
);
2886 _mesa_shader_program_init_subroutine_defaults(struct gl_context
*ctx
,
2887 struct gl_shader_program
*shProg
)
2894 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2895 if (!shProg
->_LinkedShaders
[i
])
2898 _mesa_program_init_subroutine_defaults(ctx
, shProg
->_LinkedShaders
[i
]->Program
);