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
, "cache_info"))
81 flags
|= GLSL_CACHE_INFO
;
82 if (strstr(env
, "nopvert"))
83 flags
|= GLSL_NOP_VERT
;
84 if (strstr(env
, "nopfrag"))
85 flags
|= GLSL_NOP_FRAG
;
86 if (strstr(env
, "nopt"))
88 else if (strstr(env
, "opt"))
90 if (strstr(env
, "uniform"))
91 flags
|= GLSL_UNIFORMS
;
92 if (strstr(env
, "useprog"))
93 flags
|= GLSL_USE_PROG
;
94 if (strstr(env
, "errors"))
95 flags
|= GLSL_REPORT_ERRORS
;
102 * Memoized version of getenv("MESA_SHADER_CAPTURE_PATH").
105 _mesa_get_shader_capture_path(void)
107 static bool read_env_var
= false;
108 static const char *path
= NULL
;
111 path
= getenv("MESA_SHADER_CAPTURE_PATH");
119 * Initialize context's shader state.
122 _mesa_init_shader_state(struct gl_context
*ctx
)
124 /* Device drivers may override these to control what kind of instructions
125 * are generated by the GLSL compiler.
127 struct gl_shader_compiler_options options
;
131 memset(&options
, 0, sizeof(options
));
132 options
.MaxUnrollIterations
= 32;
133 options
.MaxIfDepth
= UINT_MAX
;
135 for (sh
= 0; sh
< MESA_SHADER_STAGES
; ++sh
)
136 memcpy(&ctx
->Const
.ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
138 ctx
->Shader
.Flags
= _mesa_get_shader_flags();
140 if (ctx
->Shader
.Flags
!= 0)
141 ctx
->Const
.GenerateTemporaryNames
= true;
143 /* Extended for ARB_separate_shader_objects */
144 ctx
->Shader
.RefCount
= 1;
145 mtx_init(&ctx
->Shader
.Mutex
, mtx_plain
);
147 ctx
->TessCtrlProgram
.patch_vertices
= 3;
148 for (i
= 0; i
< 4; ++i
)
149 ctx
->TessCtrlProgram
.patch_default_outer_level
[i
] = 1.0;
150 for (i
= 0; i
< 2; ++i
)
151 ctx
->TessCtrlProgram
.patch_default_inner_level
[i
] = 1.0;
156 * Free the per-context shader-related state.
159 _mesa_free_shader_state(struct gl_context
*ctx
)
161 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
162 _mesa_reference_program(ctx
, &ctx
->Shader
.CurrentProgram
[i
], NULL
);
164 _mesa_reference_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
, NULL
);
165 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
167 /* Extended for ARB_separate_shader_objects */
168 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
170 assert(ctx
->Shader
.RefCount
== 1);
171 mtx_destroy(&ctx
->Shader
.Mutex
);
176 * Copy string from <src> to <dst>, up to maxLength characters, returning
177 * length of <dst> in <length>.
178 * \param src the strings source
179 * \param maxLength max chars to copy
180 * \param length returns number of chars copied
181 * \param dst the string destination
184 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
185 GLsizei
*length
, const GLchar
*src
)
188 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
199 * Confirm that the a shader type is valid and supported by the implementation
201 * \param ctx Current GL context
202 * \param type Shader target
206 _mesa_validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
208 /* Note: when building built-in GLSL functions, this function may be
209 * invoked with ctx == NULL. In that case, we can only validate that it's
210 * a shader target we recognize, not that it's supported in the current
211 * context. But that's fine--we don't need any further validation than
212 * that when building built-in GLSL functions.
216 case GL_FRAGMENT_SHADER
:
217 return ctx
== NULL
|| ctx
->Extensions
.ARB_fragment_shader
;
218 case GL_VERTEX_SHADER
:
219 return ctx
== NULL
|| ctx
->Extensions
.ARB_vertex_shader
;
220 case GL_GEOMETRY_SHADER_ARB
:
221 return ctx
== NULL
|| _mesa_has_geometry_shaders(ctx
);
222 case GL_TESS_CONTROL_SHADER
:
223 case GL_TESS_EVALUATION_SHADER
:
224 return ctx
== NULL
|| _mesa_has_tessellation(ctx
);
225 case GL_COMPUTE_SHADER
:
226 return ctx
== NULL
|| _mesa_has_compute_shaders(ctx
);
234 is_program(struct gl_context
*ctx
, GLuint name
)
236 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
237 return shProg
? GL_TRUE
: GL_FALSE
;
242 is_shader(struct gl_context
*ctx
, GLuint name
)
244 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
245 return shader
? GL_TRUE
: GL_FALSE
;
250 * Attach shader to a shader program.
253 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
255 struct gl_shader_program
*shProg
;
256 struct gl_shader
*sh
;
259 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
261 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
265 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
270 n
= shProg
->NumShaders
;
271 for (i
= 0; i
< n
; i
++) {
272 if (shProg
->Shaders
[i
] == sh
) {
273 /* The shader is already attched to this program. The
274 * GL_ARB_shader_objects spec says:
276 * "The error INVALID_OPERATION is generated by AttachObjectARB
277 * if <obj> is already attached to <containerObj>."
279 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
281 } else if (same_type_disallowed
&&
282 shProg
->Shaders
[i
]->Stage
== sh
->Stage
) {
283 /* Shader with the same type is already attached to this program,
284 * OpenGL ES 2.0 and 3.0 specs say:
286 * "Multiple shader objects of the same type may not be attached
287 * to a single program object. [...] The error INVALID_OPERATION
288 * is generated if [...] another shader object of the same type
289 * as shader is already attached to program."
291 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
297 shProg
->Shaders
= realloc(shProg
->Shaders
,
298 (n
+ 1) * sizeof(struct gl_shader
*));
299 if (!shProg
->Shaders
) {
300 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
305 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
306 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
307 shProg
->NumShaders
++;
312 create_shader(struct gl_context
*ctx
, GLenum type
)
314 struct gl_shader
*sh
;
317 if (!_mesa_validate_shader_target(ctx
, type
)) {
318 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(%s)",
319 _mesa_enum_to_string(type
));
323 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
324 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
325 sh
= _mesa_new_shader(name
, _mesa_shader_enum_to_shader_stage(type
));
327 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, sh
);
328 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
335 create_shader_program(struct gl_context
*ctx
)
338 struct gl_shader_program
*shProg
;
340 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
342 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
344 shProg
= _mesa_new_shader_program(name
);
346 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, shProg
);
348 assert(shProg
->RefCount
== 1);
350 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
357 * Delete a shader program. Actually, just decrement the program's
358 * reference count and mark it as DeletePending.
359 * Used to implement glDeleteProgram() and glDeleteObjectARB().
362 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
365 * NOTE: deleting shaders/programs works a bit differently than
366 * texture objects (and buffer objects, etc). Shader/program
367 * handles/IDs exist in the hash table until the object is really
368 * deleted (refcount==0). With texture objects, the handle/ID is
369 * removed from the hash table in glDeleteTextures() while the tex
370 * object itself might linger until its refcount goes to zero.
372 struct gl_shader_program
*shProg
;
374 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
378 if (!shProg
->DeletePending
) {
379 shProg
->DeletePending
= GL_TRUE
;
381 /* effectively, decr shProg's refcount */
382 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
388 delete_shader(struct gl_context
*ctx
, GLuint shader
)
390 struct gl_shader
*sh
;
392 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
396 if (!sh
->DeletePending
) {
397 sh
->DeletePending
= GL_TRUE
;
399 /* effectively, decr sh's refcount */
400 _mesa_reference_shader(ctx
, &sh
, NULL
);
406 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
408 struct gl_shader_program
*shProg
;
412 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
416 n
= shProg
->NumShaders
;
418 for (i
= 0; i
< n
; i
++) {
419 if (shProg
->Shaders
[i
]->Name
== shader
) {
421 struct gl_shader
**newList
;
424 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
426 /* alloc new, smaller array */
427 newList
= malloc((n
- 1) * sizeof(struct gl_shader
*));
429 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
432 /* Copy old list entries to new list, skipping removed entry at [i] */
433 for (j
= 0; j
< i
; j
++) {
434 newList
[j
] = shProg
->Shaders
[j
];
437 newList
[j
++] = shProg
->Shaders
[i
];
440 /* Free old list and install new one */
441 free(shProg
->Shaders
);
442 shProg
->Shaders
= newList
;
443 shProg
->NumShaders
= n
- 1;
446 /* sanity check - make sure the new list's entries are sensible */
447 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
448 assert(shProg
->Shaders
[j
]->Stage
== MESA_SHADER_VERTEX
||
449 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_TESS_CTRL
||
450 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_TESS_EVAL
||
451 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_GEOMETRY
||
452 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_FRAGMENT
);
453 assert(shProg
->Shaders
[j
]->RefCount
> 0);
464 if (is_shader(ctx
, shader
) || is_program(ctx
, shader
))
465 err
= GL_INVALID_OPERATION
;
467 err
= GL_INVALID_VALUE
;
468 _mesa_error(ctx
, err
, "glDetachShader(shader)");
475 * Return list of shaders attached to shader program.
478 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
479 GLsizei
*count
, GLuint
*obj
)
481 struct gl_shader_program
*shProg
;
484 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetAttachedShaders(maxCount < 0)");
489 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
493 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
494 obj
[i
] = shProg
->Shaders
[i
]->Name
;
503 * glGetHandleARB() - return ID/name of currently bound shader program.
506 get_handle(struct gl_context
*ctx
, GLenum pname
)
508 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
509 if (ctx
->_Shader
->ActiveProgram
)
510 return ctx
->_Shader
->ActiveProgram
->Name
;
515 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
522 * Check if a geometry shader query is valid at this time. If not, report an
523 * error and return false.
525 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
527 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
528 * are queried for a program which has not been linked successfully, or
529 * which does not contain objects to form a geometry shader, then an
530 * INVALID_OPERATION error is generated."
533 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
535 if (shProg
->data
->LinkStatus
&&
536 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
540 _mesa_error(ctx
, GL_INVALID_OPERATION
,
541 "glGetProgramv(linked geometry shader required)");
547 * Check if a tessellation control shader query is valid at this time.
548 * If not, report an error and return false.
550 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
552 * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
553 * not been linked successfully, or which does not contain objects to
554 * form a tessellation control shader, then an INVALID_OPERATION error is
558 check_tcs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
560 if (shProg
->data
->LinkStatus
&&
561 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
] != NULL
) {
565 _mesa_error(ctx
, GL_INVALID_OPERATION
,
566 "glGetProgramv(linked tessellation control shader required)");
572 * Check if a tessellation evaluation shader query is valid at this time.
573 * If not, report an error and return false.
575 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
577 * "If any of the pname values in this paragraph are queried for a program
578 * which has not been linked successfully, or which does not contain
579 * objects to form a tessellation evaluation shader, then an
580 * INVALID_OPERATION error is generated."
584 check_tes_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
586 if (shProg
->data
->LinkStatus
&&
587 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
] != NULL
) {
591 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramv(linked tessellation "
592 "evaluation shader required)");
598 * glGetProgramiv() - get shader program state.
599 * Note that this is for GLSL shader programs, not ARB vertex/fragment
600 * programs (see glGetProgramivARB).
603 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
,
606 struct gl_shader_program
*shProg
607 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramiv(program)");
609 /* Is transform feedback available in this context?
612 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
613 || ctx
->API
== API_OPENGL_CORE
614 || _mesa_is_gles3(ctx
);
616 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
617 * and GL 3.2) are available in this context
619 const bool has_core_gs
= _mesa_has_geometry_shaders(ctx
);
620 const bool has_tess
= _mesa_has_tessellation(ctx
);
622 /* Are uniform buffer objects available in this context?
625 (ctx
->API
== API_OPENGL_COMPAT
&&
626 ctx
->Extensions
.ARB_uniform_buffer_object
)
627 || ctx
->API
== API_OPENGL_CORE
628 || _mesa_is_gles3(ctx
);
635 case GL_DELETE_STATUS
:
636 *params
= shProg
->DeletePending
;
639 *params
= shProg
->data
->LinkStatus
? GL_TRUE
: GL_FALSE
;
641 case GL_VALIDATE_STATUS
:
642 *params
= shProg
->data
->Validated
;
644 case GL_INFO_LOG_LENGTH
:
645 *params
= (shProg
->data
->InfoLog
&& shProg
->data
->InfoLog
[0] != '\0') ?
646 strlen(shProg
->data
->InfoLog
) + 1 : 0;
648 case GL_ATTACHED_SHADERS
:
649 *params
= shProg
->NumShaders
;
651 case GL_ACTIVE_ATTRIBUTES
:
652 *params
= _mesa_count_active_attribs(shProg
);
654 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
655 *params
= _mesa_longest_attribute_name_length(shProg
);
657 case GL_ACTIVE_UNIFORMS
: {
659 const unsigned num_uniforms
=
660 shProg
->data
->NumUniformStorage
- shProg
->data
->NumHiddenUniforms
;
661 for (*params
= 0, i
= 0; i
< num_uniforms
; i
++) {
662 if (!shProg
->data
->UniformStorage
[i
].is_shader_storage
)
667 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
670 const unsigned num_uniforms
=
671 shProg
->data
->NumUniformStorage
- shProg
->data
->NumHiddenUniforms
;
673 for (i
= 0; i
< num_uniforms
; i
++) {
674 if (shProg
->data
->UniformStorage
[i
].is_shader_storage
)
677 /* Add one for the terminating NUL character for a non-array, and
678 * 4 for the "[0]" and the NUL for an array.
680 const GLint len
= strlen(shProg
->data
->UniformStorage
[i
].name
) + 1 +
681 ((shProg
->data
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
690 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
693 *params
= shProg
->TransformFeedback
.NumVarying
;
695 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
701 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
702 /* Add one for the terminating NUL character.
705 strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
714 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
717 *params
= shProg
->TransformFeedback
.BufferMode
;
719 case GL_GEOMETRY_VERTICES_OUT
:
722 if (check_gs_query(ctx
, shProg
)) {
723 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
724 Program
->info
.gs
.vertices_out
;
727 case GL_GEOMETRY_SHADER_INVOCATIONS
:
728 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
730 if (check_gs_query(ctx
, shProg
)) {
731 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
732 Program
->info
.gs
.invocations
;
735 case GL_GEOMETRY_INPUT_TYPE
:
738 if (check_gs_query(ctx
, shProg
)) {
739 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
740 Program
->info
.gs
.input_primitive
;
743 case GL_GEOMETRY_OUTPUT_TYPE
:
746 if (check_gs_query(ctx
, shProg
)) {
747 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
748 Program
->info
.gs
.output_primitive
;
751 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
758 for (i
= 0; i
< shProg
->data
->NumUniformBlocks
; i
++) {
759 /* Add one for the terminating NUL character.
761 const GLint len
= strlen(shProg
->data
->UniformBlocks
[i
].Name
) + 1;
770 case GL_ACTIVE_UNIFORM_BLOCKS
:
774 *params
= shProg
->data
->NumUniformBlocks
;
776 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
777 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
778 * only available with desktop OpenGL 3.0+ with the
779 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
781 * On desktop, we ignore the 3.0+ requirement because it is silly.
783 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
786 *params
= shProg
->BinaryRetreivableHint
;
788 case GL_PROGRAM_BINARY_LENGTH
:
791 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
792 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
795 *params
= shProg
->data
->NumAtomicBuffers
;
797 case GL_COMPUTE_WORK_GROUP_SIZE
: {
799 if (!_mesa_has_compute_shaders(ctx
))
801 if (!shProg
->data
->LinkStatus
) {
802 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
806 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
807 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
811 for (i
= 0; i
< 3; i
++)
812 params
[i
] = shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
]->
813 Program
->info
.cs
.local_size
[i
];
816 case GL_PROGRAM_SEPARABLE
:
817 /* If the program has not been linked, return initial value 0. */
818 *params
= (shProg
->data
->LinkStatus
== linking_failure
) ? 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 Program
->info
.tess
.tcs_vertices_out
;
830 case GL_TESS_GEN_MODE
:
833 if (check_tes_query(ctx
, shProg
)) {
834 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
835 Program
->info
.tess
.primitive_mode
;
838 case GL_TESS_GEN_SPACING
:
841 if (check_tes_query(ctx
, shProg
)) {
842 const struct gl_linked_shader
*tes
=
843 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
];
844 switch (tes
->Program
->info
.tess
.spacing
) {
845 case TESS_SPACING_EQUAL
:
848 case TESS_SPACING_FRACTIONAL_ODD
:
849 *params
= GL_FRACTIONAL_ODD
;
851 case TESS_SPACING_FRACTIONAL_EVEN
:
852 *params
= GL_FRACTIONAL_EVEN
;
854 case TESS_SPACING_UNSPECIFIED
:
860 case GL_TESS_GEN_VERTEX_ORDER
:
863 if (check_tes_query(ctx
, shProg
)) {
864 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
865 Program
->info
.tess
.ccw
? GL_CCW
: GL_CW
;
868 case GL_TESS_GEN_POINT_MODE
:
871 if (check_tes_query(ctx
, shProg
)) {
872 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
873 Program
->info
.tess
.point_mode
? GL_TRUE
: GL_FALSE
;
880 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
881 _mesa_enum_to_string(pname
));
886 * glGetShaderiv() - get GLSL shader state
889 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
891 struct gl_shader
*shader
=
892 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
900 *params
= shader
->Type
;
902 case GL_DELETE_STATUS
:
903 *params
= shader
->DeletePending
;
905 case GL_COMPILE_STATUS
:
906 *params
= shader
->CompileStatus
;
908 case GL_INFO_LOG_LENGTH
:
909 *params
= (shader
->InfoLog
&& shader
->InfoLog
[0] != '\0') ?
910 strlen(shader
->InfoLog
) + 1 : 0;
912 case GL_SHADER_SOURCE_LENGTH
:
913 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
916 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
923 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
924 GLsizei
*length
, GLchar
*infoLog
)
926 struct gl_shader_program
*shProg
;
928 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
929 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
931 * "If a negative number is provided where an argument of type sizei or
932 * sizeiptr is specified, an INVALID_VALUE error is generated."
935 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(bufSize < 0)");
939 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
940 "glGetProgramInfoLog(program)");
945 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->data
->InfoLog
);
950 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
951 GLsizei
*length
, GLchar
*infoLog
)
953 struct gl_shader
*sh
;
955 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
956 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
958 * "If a negative number is provided where an argument of type sizei or
959 * sizeiptr is specified, an INVALID_VALUE error is generated."
962 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(bufSize < 0)");
966 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderInfoLog(shader)");
971 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
976 * Return shader source code.
979 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
980 GLsizei
*length
, GLchar
*sourceOut
)
982 struct gl_shader
*sh
;
985 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderSource(bufSize < 0)");
989 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
993 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
998 * Set/replace shader source code. A helper function used by
999 * glShaderSource[ARB].
1002 shader_source(struct gl_shader
*sh
, const GLchar
*source
)
1006 /* free old shader source string and install new one */
1007 free((void *)sh
->Source
);
1008 sh
->Source
= source
;
1010 sh
->SourceChecksum
= util_hash_crc32(sh
->Source
, strlen(sh
->Source
));
1019 _mesa_compile_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
1025 /* If the user called glCompileShader without first calling
1026 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
1028 sh
->CompileStatus
= GL_FALSE
;
1030 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1031 _mesa_log("GLSL source for %s shader %d:\n",
1032 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1033 _mesa_log("%s\n", sh
->Source
);
1036 /* this call will set the shader->CompileStatus field to indicate if
1037 * compilation was successful.
1039 _mesa_glsl_compile_shader(ctx
, sh
, false, false, false);
1041 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
1042 _mesa_write_shader_to_file(sh
);
1045 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1046 if (sh
->CompileStatus
) {
1048 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
1049 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
1051 _mesa_log("No GLSL IR for shader %d (shader may be from "
1052 "cache)\n", sh
->Name
);
1056 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
1058 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
1059 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
1060 _mesa_log("%s\n", sh
->InfoLog
);
1065 if (!sh
->CompileStatus
) {
1066 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1067 _mesa_log("GLSL source for %s shader %d:\n",
1068 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1069 _mesa_log("%s\n", sh
->Source
);
1070 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1073 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1074 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1075 sh
->Name
, sh
->InfoLog
);
1082 * Link a program's shaders.
1085 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1090 /* From the ARB_transform_feedback2 specification:
1091 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1092 * the name of a program being used by one or more transform feedback
1093 * objects, even if the objects are not currently bound or are paused."
1095 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1096 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1097 "glLinkProgram(transform feedback is using the program)");
1101 unsigned programs_in_use
= 0;
1103 for (unsigned stage
= 0; stage
< MESA_SHADER_STAGES
; stage
++) {
1104 if (ctx
->_Shader
->CurrentProgram
[stage
] &&
1105 ctx
->_Shader
->CurrentProgram
[stage
]->Id
== shProg
->Name
) {
1106 programs_in_use
|= 1 << stage
;
1110 FLUSH_VERTICES(ctx
, 0);
1111 _mesa_glsl_link_shader(ctx
, shProg
);
1113 /* From section 7.3 (Program Objects) of the OpenGL 4.5 spec:
1115 * "If LinkProgram or ProgramBinary successfully re-links a program
1116 * object that is active for any shader stage, then the newly generated
1117 * executable code will be installed as part of the current rendering
1118 * state for all shader stages where the program is active.
1119 * Additionally, the newly generated executable code is made part of
1120 * the state of any program pipeline for all stages where the program
1123 if (shProg
->data
->LinkStatus
&& programs_in_use
) {
1124 while (programs_in_use
) {
1125 const int stage
= u_bit_scan(&programs_in_use
);
1127 struct gl_program
*prog
= NULL
;
1128 if (shProg
->_LinkedShaders
[stage
])
1129 prog
= shProg
->_LinkedShaders
[stage
]->Program
;
1131 _mesa_use_program(ctx
, stage
, prog
, ctx
->_Shader
);
1135 /* Capture .shader_test files. */
1136 const char *capture_path
= _mesa_get_shader_capture_path();
1137 if (shProg
->Name
!= 0 && shProg
->Name
!= ~0 && capture_path
!= NULL
) {
1139 char *filename
= ralloc_asprintf(NULL
, "%s/%u.shader_test",
1140 capture_path
, shProg
->Name
);
1141 file
= fopen(filename
, "w");
1143 fprintf(file
, "[require]\nGLSL%s >= %u.%02u\n",
1144 shProg
->IsES
? " ES" : "",
1145 shProg
->data
->Version
/ 100, shProg
->data
->Version
% 100);
1146 if (shProg
->SeparateShader
)
1147 fprintf(file
, "GL_ARB_separate_shader_objects\nSSO ENABLED\n");
1148 fprintf(file
, "\n");
1150 for (unsigned i
= 0; i
< shProg
->NumShaders
; i
++) {
1151 fprintf(file
, "[%s shader]\n%s\n",
1152 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1153 shProg
->Shaders
[i
]->Source
);
1157 _mesa_warning(ctx
, "Failed to open %s", filename
);
1160 ralloc_free(filename
);
1163 if (shProg
->data
->LinkStatus
== linking_failure
&&
1164 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1165 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1166 shProg
->Name
, shProg
->data
->InfoLog
);
1173 printf("Link %u shaders in program %u: %s\n",
1174 shProg
->NumShaders
, shProg
->Name
,
1175 shProg
->data
->LinkStatus
? "Success" : "Failed");
1177 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1178 printf(" shader %u, stage %u\n",
1179 shProg
->Shaders
[i
]->Name
,
1180 shProg
->Shaders
[i
]->Stage
);
1187 * Print basic shader info (for debug).
1190 print_shader_info(const struct gl_shader_program
*shProg
)
1194 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1195 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1197 printf(" %s shader %u, checksum %u\n",
1198 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1199 shProg
->Shaders
[i
]->Name
,
1200 shProg
->Shaders
[i
]->SourceChecksum
);
1202 printf(" %s shader %u\n",
1203 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1204 shProg
->Shaders
[i
]->Name
);
1207 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1208 printf(" vert prog %u\n",
1209 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1210 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1211 printf(" frag prog %u\n",
1212 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1213 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1214 printf(" geom prog %u\n",
1215 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1216 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1217 printf(" tesc prog %u\n",
1218 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1219 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1220 printf(" tese prog %u\n",
1221 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1226 * Use the named shader program for subsequent glUniform calls
1229 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1232 if ((shProg
!= NULL
) && !shProg
->data
->LinkStatus
) {
1233 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1234 "%s(program %u not linked)", caller
, shProg
->Name
);
1238 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1239 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1245 use_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1246 struct gl_program
*new_prog
, struct gl_pipeline_object
*shTarget
)
1248 struct gl_program
**target
;
1250 target
= &shTarget
->CurrentProgram
[stage
];
1252 _mesa_program_init_subroutine_defaults(ctx
, new_prog
);
1255 if (*target
!= new_prog
) {
1256 /* Program is current, flush it */
1257 if (shTarget
== ctx
->_Shader
) {
1258 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1261 /* If the shader is also bound as the current rendering shader, unbind
1262 * it from that binding point as well. This ensures that the correct
1263 * semantics of glDeleteProgram are maintained.
1266 case MESA_SHADER_VERTEX
:
1267 case MESA_SHADER_TESS_CTRL
:
1268 case MESA_SHADER_TESS_EVAL
:
1269 case MESA_SHADER_GEOMETRY
:
1270 case MESA_SHADER_COMPUTE
:
1271 /* Empty for now. */
1273 case MESA_SHADER_FRAGMENT
:
1274 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1275 _mesa_reference_program(ctx
,
1276 &ctx
->_Shader
->_CurrentFragmentProgram
,
1282 _mesa_reference_program(ctx
, target
, new_prog
);
1289 * Use the named shader program for subsequent rendering.
1292 _mesa_use_shader_program(struct gl_context
*ctx
,
1293 struct gl_shader_program
*shProg
)
1295 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
1296 struct gl_program
*new_prog
= NULL
;
1297 if (shProg
&& shProg
->_LinkedShaders
[i
])
1298 new_prog
= shProg
->_LinkedShaders
[i
]->Program
;
1299 use_program(ctx
, i
, new_prog
, &ctx
->Shader
);
1301 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1306 * Do validation of the given shader program.
1307 * \param errMsg returns error message if validation fails.
1308 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1311 validate_shader_program(const struct gl_shader_program
*shProg
,
1314 if (!shProg
->data
->LinkStatus
) {
1318 /* From the GL spec, a program is invalid if any of these are true:
1320 any two active samplers in the current program object are of
1321 different types, but refer to the same texture image unit,
1323 any active sampler in the current program object refers to a texture
1324 image unit where fixed-function fragment processing accesses a
1325 texture target that does not match the sampler type, or
1327 the sum of the number of active samplers in the program and the
1328 number of texture image units enabled for fixed-function fragment
1329 processing exceeds the combined limit on the total number of texture
1330 image units allowed.
1334 * Check: any two active samplers in the current program object are of
1335 * different types, but refer to the same texture image unit,
1337 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1345 * Called via glValidateProgram()
1348 validate_program(struct gl_context
*ctx
, GLuint program
)
1350 struct gl_shader_program
*shProg
;
1351 char errMsg
[100] = "";
1353 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1358 shProg
->data
->Validated
= validate_shader_program(shProg
, errMsg
);
1359 if (!shProg
->data
->Validated
) {
1360 /* update info log */
1361 if (shProg
->data
->InfoLog
) {
1362 ralloc_free(shProg
->data
->InfoLog
);
1364 shProg
->data
->InfoLog
= ralloc_strdup(shProg
->data
, errMsg
);
1371 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1373 GET_CURRENT_CONTEXT(ctx
);
1374 attach_shader(ctx
, program
, shader
);
1379 _mesa_AttachShader(GLuint program
, GLuint shader
)
1381 GET_CURRENT_CONTEXT(ctx
);
1382 attach_shader(ctx
, program
, shader
);
1387 _mesa_CompileShader(GLuint shaderObj
)
1389 GET_CURRENT_CONTEXT(ctx
);
1390 if (MESA_VERBOSE
& VERBOSE_API
)
1391 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1392 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1393 "glCompileShader"));
1398 _mesa_CreateShader(GLenum type
)
1400 GET_CURRENT_CONTEXT(ctx
);
1401 if (MESA_VERBOSE
& VERBOSE_API
)
1402 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1403 return create_shader(ctx
, type
);
1407 GLhandleARB GLAPIENTRY
1408 _mesa_CreateShaderObjectARB(GLenum type
)
1410 GET_CURRENT_CONTEXT(ctx
);
1411 return create_shader(ctx
, type
);
1416 _mesa_CreateProgram(void)
1418 GET_CURRENT_CONTEXT(ctx
);
1419 if (MESA_VERBOSE
& VERBOSE_API
)
1420 _mesa_debug(ctx
, "glCreateProgram\n");
1421 return create_shader_program(ctx
);
1425 GLhandleARB GLAPIENTRY
1426 _mesa_CreateProgramObjectARB(void)
1428 GET_CURRENT_CONTEXT(ctx
);
1429 return create_shader_program(ctx
);
1434 _mesa_DeleteObjectARB(GLhandleARB obj
)
1436 if (MESA_VERBOSE
& VERBOSE_API
) {
1437 GET_CURRENT_CONTEXT(ctx
);
1438 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1442 GET_CURRENT_CONTEXT(ctx
);
1443 FLUSH_VERTICES(ctx
, 0);
1444 if (is_program(ctx
, obj
)) {
1445 delete_shader_program(ctx
, obj
);
1447 else if (is_shader(ctx
, obj
)) {
1448 delete_shader(ctx
, obj
);
1458 _mesa_DeleteProgram(GLuint name
)
1461 GET_CURRENT_CONTEXT(ctx
);
1462 FLUSH_VERTICES(ctx
, 0);
1463 delete_shader_program(ctx
, name
);
1469 _mesa_DeleteShader(GLuint name
)
1472 GET_CURRENT_CONTEXT(ctx
);
1473 FLUSH_VERTICES(ctx
, 0);
1474 delete_shader(ctx
, name
);
1480 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1482 GET_CURRENT_CONTEXT(ctx
);
1483 detach_shader(ctx
, program
, shader
);
1488 _mesa_DetachShader(GLuint program
, GLuint shader
)
1490 GET_CURRENT_CONTEXT(ctx
);
1491 detach_shader(ctx
, program
, shader
);
1496 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1497 GLsizei
* count
, GLhandleARB
* obj
)
1499 GET_CURRENT_CONTEXT(ctx
);
1500 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1505 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1506 GLsizei
*count
, GLuint
*obj
)
1508 GET_CURRENT_CONTEXT(ctx
);
1509 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1514 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1515 GLcharARB
* infoLog
)
1517 GET_CURRENT_CONTEXT(ctx
);
1518 if (is_program(ctx
, object
)) {
1519 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1521 else if (is_shader(ctx
, object
)) {
1522 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1525 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1531 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1533 GET_CURRENT_CONTEXT(ctx
);
1534 /* Implement in terms of GetProgramiv, GetShaderiv */
1535 if (is_program(ctx
, object
)) {
1536 if (pname
== GL_OBJECT_TYPE_ARB
) {
1537 *params
= GL_PROGRAM_OBJECT_ARB
;
1540 get_programiv(ctx
, object
, pname
, params
);
1543 else if (is_shader(ctx
, object
)) {
1544 if (pname
== GL_OBJECT_TYPE_ARB
) {
1545 *params
= GL_SHADER_OBJECT_ARB
;
1548 get_shaderiv(ctx
, object
, pname
, params
);
1552 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1558 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1561 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1562 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1563 params
[0] = (GLfloat
) iparams
[0];
1568 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1570 GET_CURRENT_CONTEXT(ctx
);
1571 get_programiv(ctx
, program
, pname
, params
);
1576 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1578 GET_CURRENT_CONTEXT(ctx
);
1579 get_shaderiv(ctx
, shader
, pname
, params
);
1584 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1585 GLsizei
*length
, GLchar
*infoLog
)
1587 GET_CURRENT_CONTEXT(ctx
);
1588 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1593 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1594 GLsizei
*length
, GLchar
*infoLog
)
1596 GET_CURRENT_CONTEXT(ctx
);
1597 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1602 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1603 GLsizei
*length
, GLchar
*sourceOut
)
1605 GET_CURRENT_CONTEXT(ctx
);
1606 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1610 GLhandleARB GLAPIENTRY
1611 _mesa_GetHandleARB(GLenum pname
)
1613 GET_CURRENT_CONTEXT(ctx
);
1614 return get_handle(ctx
, pname
);
1618 GLboolean GLAPIENTRY
1619 _mesa_IsProgram(GLuint name
)
1621 GET_CURRENT_CONTEXT(ctx
);
1622 return is_program(ctx
, name
);
1626 GLboolean GLAPIENTRY
1627 _mesa_IsShader(GLuint name
)
1629 GET_CURRENT_CONTEXT(ctx
);
1630 return is_shader(ctx
, name
);
1635 _mesa_LinkProgram(GLuint programObj
)
1637 GET_CURRENT_CONTEXT(ctx
);
1638 if (MESA_VERBOSE
& VERBOSE_API
)
1639 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1640 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1644 #ifdef ENABLE_SHADER_CACHE
1646 * Generate a SHA-1 hash value string for given source string.
1649 generate_sha1(const char *source
, char sha_str
[64])
1651 unsigned char sha
[20];
1652 _mesa_sha1_compute(source
, strlen(source
), sha
);
1653 _mesa_sha1_format(sha_str
, sha
);
1657 * Construct a full path for shader replacement functionality using
1660 * <path>/<stage prefix>_<CHECKSUM>.glsl
1663 construct_name(const gl_shader_stage stage
, const char *source
,
1667 static const char *types
[] = {
1668 "VS", "TC", "TE", "GS", "FS", "CS",
1671 generate_sha1(source
, sha
);
1672 return ralloc_asprintf(NULL
, "%s/%s_%s.glsl", path
, types
[stage
], sha
);
1676 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1679 dump_shader(const gl_shader_stage stage
, const char *source
)
1681 static bool path_exists
= true;
1688 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1690 path_exists
= false;
1694 char *name
= construct_name(stage
, source
, dump_path
);
1696 f
= fopen(name
, "w");
1701 GET_CURRENT_CONTEXT(ctx
);
1702 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1709 * Read shader source code from a file.
1710 * Useful for debugging to override an app's shader.
1713 read_shader(const gl_shader_stage stage
, const char *source
)
1716 static bool path_exists
= true;
1717 int len
, shader_size
= 0;
1724 read_path
= getenv("MESA_SHADER_READ_PATH");
1726 path_exists
= false;
1730 char *name
= construct_name(stage
, source
, read_path
);
1731 f
= fopen(name
, "r");
1736 /* allocate enough room for the entire shader */
1737 fseek(f
, 0, SEEK_END
);
1738 shader_size
= ftell(f
);
1740 assert(shader_size
);
1742 /* add one for terminating zero */
1745 buffer
= malloc(shader_size
);
1748 len
= fread(buffer
, 1, shader_size
, f
);
1756 #endif /* ENABLE_SHADER_CACHE */
1759 * Called via glShaderSource() and glShaderSourceARB() API functions.
1760 * Basically, concatenate the source code strings into one long string
1761 * and pass it to _mesa_shader_source().
1764 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1765 const GLchar
* const * string
, const GLint
* length
)
1767 GET_CURRENT_CONTEXT(ctx
);
1769 GLsizei i
, totalLength
;
1771 struct gl_shader
*sh
;
1773 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1777 if (string
== NULL
) {
1778 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1783 * This array holds offsets of where the appropriate string ends, thus the
1784 * last element will be set to the total length of the source code.
1786 offsets
= malloc(count
* sizeof(GLint
));
1787 if (offsets
== NULL
) {
1788 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1792 for (i
= 0; i
< count
; i
++) {
1793 if (string
[i
] == NULL
) {
1794 free((GLvoid
*) offsets
);
1795 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1796 "glShaderSourceARB(null string)");
1799 if (length
== NULL
|| length
[i
] < 0)
1800 offsets
[i
] = strlen(string
[i
]);
1802 offsets
[i
] = length
[i
];
1803 /* accumulate string lengths */
1805 offsets
[i
] += offsets
[i
- 1];
1808 /* Total length of source string is sum off all strings plus two.
1809 * One extra byte for terminating zero, another extra byte to silence
1810 * valgrind warnings in the parser/grammer code.
1812 totalLength
= offsets
[count
- 1] + 2;
1813 source
= malloc(totalLength
* sizeof(GLcharARB
));
1814 if (source
== NULL
) {
1815 free((GLvoid
*) offsets
);
1816 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1820 for (i
= 0; i
< count
; i
++) {
1821 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1822 memcpy(source
+ start
, string
[i
],
1823 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1825 source
[totalLength
- 1] = '\0';
1826 source
[totalLength
- 2] = '\0';
1828 #ifdef ENABLE_SHADER_CACHE
1829 GLcharARB
*replacement
;
1831 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1832 * if corresponding entry found from MESA_SHADER_READ_PATH.
1834 dump_shader(sh
->Stage
, source
);
1836 replacement
= read_shader(sh
->Stage
, source
);
1839 source
= replacement
;
1841 #endif /* ENABLE_SHADER_CACHE */
1843 shader_source(sh
, source
);
1850 _mesa_UseProgram(GLuint program
)
1852 GET_CURRENT_CONTEXT(ctx
);
1853 struct gl_shader_program
*shProg
;
1855 if (MESA_VERBOSE
& VERBOSE_API
)
1856 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1858 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1859 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1860 "glUseProgram(transform feedback active)");
1865 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1869 if (!shProg
->data
->LinkStatus
) {
1870 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1871 "glUseProgram(program %u not linked)", program
);
1876 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1877 print_shader_info(shProg
);
1884 /* The ARB_separate_shader_object spec says:
1886 * "The executable code for an individual shader stage is taken from
1887 * the current program for that stage. If there is a current program
1888 * object established by UseProgram, that program is considered current
1889 * for all stages. Otherwise, if there is a bound program pipeline
1890 * object (section 2.14.PPO), the program bound to the appropriate
1891 * stage of the pipeline object is considered current."
1894 /* Attach shader state to the binding point */
1895 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1896 /* Update the program */
1897 _mesa_use_shader_program(ctx
, shProg
);
1899 /* Must be done first: detach the progam */
1900 _mesa_use_shader_program(ctx
, shProg
);
1901 /* Unattach shader_state binding point */
1902 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1903 /* If a pipeline was bound, rebind it */
1904 if (ctx
->Pipeline
.Current
) {
1905 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1912 _mesa_ValidateProgram(GLuint program
)
1914 GET_CURRENT_CONTEXT(ctx
);
1915 validate_program(ctx
, program
);
1920 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1923 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1924 GLint
* range
, GLint
* precision
)
1926 const struct gl_program_constants
*limits
;
1927 const struct gl_precision
*p
;
1928 GET_CURRENT_CONTEXT(ctx
);
1930 switch (shadertype
) {
1931 case GL_VERTEX_SHADER
:
1932 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1934 case GL_FRAGMENT_SHADER
:
1935 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1938 _mesa_error(ctx
, GL_INVALID_ENUM
,
1939 "glGetShaderPrecisionFormat(shadertype)");
1943 switch (precisiontype
) {
1945 p
= &limits
->LowFloat
;
1947 case GL_MEDIUM_FLOAT
:
1948 p
= &limits
->MediumFloat
;
1951 p
= &limits
->HighFloat
;
1954 p
= &limits
->LowInt
;
1957 p
= &limits
->MediumInt
;
1960 p
= &limits
->HighInt
;
1963 _mesa_error(ctx
, GL_INVALID_ENUM
,
1964 "glGetShaderPrecisionFormat(precisiontype)");
1968 range
[0] = p
->RangeMin
;
1969 range
[1] = p
->RangeMax
;
1970 precision
[0] = p
->Precision
;
1975 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1978 _mesa_ReleaseShaderCompiler(void)
1980 _mesa_destroy_shader_compiler_caches();
1985 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1988 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1989 const void* binary
, GLint length
)
1991 GET_CURRENT_CONTEXT(ctx
);
1993 (void) binaryformat
;
1996 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1997 * page 88 of the OpenGL 4.5 specs state:
1999 * "An INVALID_VALUE error is generated if count or length is negative.
2000 * An INVALID_ENUM error is generated if binaryformat is not a supported
2001 * format returned in SHADER_BINARY_FORMATS."
2003 if (n
< 0 || length
< 0) {
2004 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
2008 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
2013 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
2014 GLenum
*binaryFormat
, GLvoid
*binary
)
2016 struct gl_shader_program
*shProg
;
2017 GLsizei length_dummy
;
2018 GET_CURRENT_CONTEXT(ctx
);
2021 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
2025 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
2029 /* The ARB_get_program_binary spec says:
2031 * "If <length> is NULL, then no length is returned."
2033 * Ensure that length always points to valid storage to avoid multiple NULL
2034 * pointer checks below.
2037 length
= &length_dummy
;
2040 /* The ARB_get_program_binary spec says:
2042 * "When a program object's LINK_STATUS is FALSE, its program binary
2043 * length is zero, and a call to GetProgramBinary will generate an
2044 * INVALID_OPERATION error.
2046 if (!shProg
->data
->LinkStatus
) {
2047 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2048 "glGetProgramBinary(program %u not linked)",
2055 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2056 "glGetProgramBinary(driver supports zero binary formats)");
2058 (void) binaryFormat
;
2063 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
2064 const GLvoid
*binary
, GLsizei length
)
2066 struct gl_shader_program
*shProg
;
2067 GET_CURRENT_CONTEXT(ctx
);
2069 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
2073 (void) binaryFormat
;
2076 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2078 * "If a negative number is provided where an argument of type sizei or
2079 * sizeiptr is specified, an INVALID_VALUE error is generated."
2082 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
2086 /* The ARB_get_program_binary spec says:
2088 * "<binaryFormat> and <binary> must be those returned by a previous
2089 * call to GetProgramBinary, and <length> must be the length of the
2090 * program binary as returned by GetProgramBinary or GetProgramiv with
2091 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2092 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2095 * Since any value of binaryFormat passed "is not one of those specified as
2096 * allowable for [this] command, an INVALID_ENUM error is generated."
2098 shProg
->data
->LinkStatus
= linking_failure
;
2099 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
2104 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
2106 struct gl_shader_program
*shProg
;
2107 GET_CURRENT_CONTEXT(ctx
);
2109 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
2110 "glProgramParameteri");
2115 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
2116 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2117 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2118 * even be in the dispatch table, so we shouldn't need to expclicitly
2121 * On desktop, we ignore the 3.0+ requirement because it is silly.
2124 /* The ARB_get_program_binary extension spec says:
2126 * "An INVALID_VALUE error is generated if the <value> argument to
2127 * ProgramParameteri is not TRUE or FALSE."
2129 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2133 /* No need to notify the driver. Any changes will actually take effect
2134 * the next time the shader is linked.
2136 * The ARB_get_program_binary extension spec says:
2138 * "To indicate that a program binary is likely to be retrieved,
2139 * ProgramParameteri should be called with <pname>
2140 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2141 * will not be in effect until the next time LinkProgram or
2142 * ProgramBinary has been called successfully."
2144 * The resloution of issue 9 in the extension spec also says:
2146 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2147 * to indicate to the GL implementation that this program will
2148 * likely be saved with GetProgramBinary at some point. This will
2149 * give the GL implementation the opportunity to track any state
2150 * changes made to the program before being saved such that when it
2151 * is loaded again a recompile can be avoided."
2153 shProg
->BinaryRetreivableHint
= value
;
2156 case GL_PROGRAM_SEPARABLE
:
2157 /* Spec imply that the behavior is the same as ARB_get_program_binary
2158 * Chapter 7.3 Program Objects
2160 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2163 shProg
->SeparateShader
= value
;
2167 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2168 _mesa_enum_to_string(pname
));
2173 _mesa_error(ctx
, GL_INVALID_VALUE
,
2174 "glProgramParameteri(pname=%s, value=%d): "
2175 "value must be 0 or 1.",
2176 _mesa_enum_to_string(pname
),
2182 _mesa_use_program(struct gl_context
*ctx
, gl_shader_stage stage
,
2183 struct gl_program
*prog
,
2184 struct gl_pipeline_object
*shTarget
)
2186 use_program(ctx
, stage
, prog
, shTarget
);
2191 * Copy program-specific data generated by linking from the gl_shader_program
2192 * object to the gl_program object referred to by the gl_linked_shader.
2194 * This function expects _mesa_reference_program() to have been previously
2195 * called setting the gl_linked_shaders program reference.
2198 _mesa_copy_linked_program_data(const struct gl_shader_program
*src
,
2199 struct gl_linked_shader
*dst_sh
)
2201 assert(dst_sh
->Program
);
2203 struct gl_program
*dst
= dst_sh
->Program
;
2205 dst
->info
.separate_shader
= src
->SeparateShader
;
2207 switch (dst_sh
->Stage
) {
2208 case MESA_SHADER_GEOMETRY
: {
2209 dst
->info
.gs
.vertices_in
= src
->Geom
.VerticesIn
;
2210 dst
->info
.gs
.uses_end_primitive
= src
->Geom
.UsesEndPrimitive
;
2211 dst
->info
.gs
.uses_streams
= src
->Geom
.UsesStreams
;
2214 case MESA_SHADER_FRAGMENT
: {
2215 dst
->info
.fs
.depth_layout
= src
->FragDepthLayout
;
2218 case MESA_SHADER_COMPUTE
: {
2219 dst
->info
.cs
.shared_size
= src
->Comp
.SharedSize
;
2228 * ARB_separate_shader_objects: Compile & Link Program
2231 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2232 const GLchar
* const *strings
)
2234 GET_CURRENT_CONTEXT(ctx
);
2236 const GLuint shader
= create_shader(ctx
, type
);
2240 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2241 * GL_INVALID_VALUE should be generated if count < 0
2244 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2249 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2251 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2252 _mesa_compile_shader(ctx
, sh
);
2254 program
= create_shader_program(ctx
);
2256 struct gl_shader_program
*shProg
;
2257 GLint compiled
= GL_FALSE
;
2259 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2261 shProg
->SeparateShader
= GL_TRUE
;
2263 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2265 attach_shader(ctx
, program
, shader
);
2266 _mesa_link_program(ctx
, shProg
);
2267 detach_shader(ctx
, program
, shader
);
2271 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2272 append
-error
-to
-info
-log
;
2273 shProg
->data
->LinkStatus
= linking_failure
;
2278 ralloc_strcat(&shProg
->data
->InfoLog
, sh
->InfoLog
);
2281 delete_shader(ctx
, shader
);
2289 * For GL_ARB_tessellation_shader
2291 extern void GLAPIENTRY
2292 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2294 GET_CURRENT_CONTEXT(ctx
);
2296 if (!_mesa_has_tessellation(ctx
)) {
2297 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2301 if (pname
!= GL_PATCH_VERTICES
) {
2302 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2306 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2307 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2311 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2315 extern void GLAPIENTRY
2316 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2318 GET_CURRENT_CONTEXT(ctx
);
2320 if (!_mesa_has_tessellation(ctx
)) {
2321 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2326 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2327 FLUSH_VERTICES(ctx
, 0);
2328 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2329 4 * sizeof(GLfloat
));
2330 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2332 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2333 FLUSH_VERTICES(ctx
, 0);
2334 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2335 2 * sizeof(GLfloat
));
2336 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2339 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2345 * ARB_shader_subroutine
2348 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2351 GET_CURRENT_CONTEXT(ctx
);
2352 const char *api_name
= "glGetSubroutineUniformLocation";
2353 struct gl_shader_program
*shProg
;
2354 GLenum resource_type
;
2355 gl_shader_stage stage
;
2357 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2358 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2362 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2363 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2367 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2371 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2372 if (!shProg
->_LinkedShaders
[stage
]) {
2373 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2377 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2378 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2382 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2385 GET_CURRENT_CONTEXT(ctx
);
2386 const char *api_name
= "glGetSubroutineIndex";
2387 struct gl_shader_program
*shProg
;
2388 struct gl_program_resource
*res
;
2389 GLenum resource_type
;
2390 gl_shader_stage stage
;
2392 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2393 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2397 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2398 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2402 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2406 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2407 if (!shProg
->_LinkedShaders
[stage
]) {
2408 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2412 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2413 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2418 return _mesa_program_resource_index(shProg
, res
);
2423 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2424 GLuint index
, GLenum pname
, GLint
*values
)
2426 GET_CURRENT_CONTEXT(ctx
);
2427 const char *api_name
= "glGetActiveSubroutineUniformiv";
2428 struct gl_shader_program
*shProg
;
2429 struct gl_linked_shader
*sh
;
2430 gl_shader_stage stage
;
2431 struct gl_program_resource
*res
;
2432 const struct gl_uniform_storage
*uni
;
2433 GLenum resource_type
;
2436 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2437 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2441 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2442 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2446 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2450 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2451 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2453 sh
= shProg
->_LinkedShaders
[stage
];
2455 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2459 struct gl_program
*p
= shProg
->_LinkedShaders
[stage
]->Program
;
2460 if (index
>= p
->sh
.NumSubroutineUniforms
) {
2461 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2466 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2467 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2470 values
[0] = uni
->num_compatible_subroutines
;
2474 case GL_COMPATIBLE_SUBROUTINES
: {
2475 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2479 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2480 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2481 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2482 if (fn
->types
[j
] == uni
->type
) {
2483 values
[count
++] = i
;
2491 case GL_UNIFORM_SIZE
:
2492 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2495 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2498 case GL_UNIFORM_NAME_LENGTH
:
2499 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2501 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2502 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2506 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2513 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2514 GLuint index
, GLsizei bufsize
,
2515 GLsizei
*length
, GLchar
*name
)
2517 GET_CURRENT_CONTEXT(ctx
);
2518 const char *api_name
= "glGetActiveSubroutineUniformName";
2519 struct gl_shader_program
*shProg
;
2520 GLenum resource_type
;
2521 gl_shader_stage stage
;
2523 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2524 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2528 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2529 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2533 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2537 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2538 if (!shProg
->_LinkedShaders
[stage
]) {
2539 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2543 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2544 /* get program resource name */
2545 _mesa_get_program_resource_name(shProg
, resource_type
,
2547 length
, name
, api_name
);
2552 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2553 GLuint index
, GLsizei bufsize
,
2554 GLsizei
*length
, GLchar
*name
)
2556 GET_CURRENT_CONTEXT(ctx
);
2557 const char *api_name
= "glGetActiveSubroutineName";
2558 struct gl_shader_program
*shProg
;
2559 GLenum resource_type
;
2560 gl_shader_stage stage
;
2562 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2563 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2567 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2568 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2572 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2576 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2577 if (!shProg
->_LinkedShaders
[stage
]) {
2578 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2581 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2582 _mesa_get_program_resource_name(shProg
, resource_type
,
2584 length
, name
, api_name
);
2588 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2589 const GLuint
*indices
)
2591 GET_CURRENT_CONTEXT(ctx
);
2592 const char *api_name
= "glUniformSubroutinesuiv";
2593 gl_shader_stage stage
;
2596 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2597 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2601 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2602 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2606 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2607 struct gl_program
*p
= ctx
->_Shader
->CurrentProgram
[stage
];
2609 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2613 if (count
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2614 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2620 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2626 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2629 for (j
= i
; j
< i
+ uni_count
; j
++) {
2630 struct gl_subroutine_function
*subfn
= NULL
;
2631 if (indices
[j
] > p
->sh
.MaxSubroutineFunctionIndex
) {
2632 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2636 for (f
= 0; f
< p
->sh
.NumSubroutineFunctions
; f
++) {
2637 if (p
->sh
.SubroutineFunctions
[f
].index
== indices
[j
])
2638 subfn
= &p
->sh
.SubroutineFunctions
[f
];
2645 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2646 if (subfn
->types
[k
] == uni
->type
)
2649 if (k
== subfn
->num_compat_types
) {
2650 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2654 ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[j
] = indices
[j
];
2659 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2664 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2667 GET_CURRENT_CONTEXT(ctx
);
2668 const char *api_name
= "glGetUniformSubroutineuiv";
2669 gl_shader_stage stage
;
2671 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2672 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2676 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2677 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2681 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2682 struct gl_program
*p
= ctx
->_Shader
->CurrentProgram
[stage
];
2684 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2688 if (location
>= p
->sh
.NumSubroutineUniformRemapTable
) {
2689 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2693 *params
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[location
];
2698 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2699 GLenum pname
, GLint
*values
)
2701 GET_CURRENT_CONTEXT(ctx
);
2702 const char *api_name
= "glGetProgramStageiv";
2703 struct gl_shader_program
*shProg
;
2704 struct gl_linked_shader
*sh
;
2705 gl_shader_stage stage
;
2707 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2708 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2712 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2713 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2717 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2721 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2722 sh
= shProg
->_LinkedShaders
[stage
];
2724 /* ARB_shader_subroutine doesn't ask the program to be linked, or list any
2725 * INVALID_OPERATION in the case of not be linked.
2727 * And for some pnames, like GL_ACTIVE_SUBROUTINE_UNIFORMS, you can ask the
2728 * same info using other specs (ARB_program_interface_query), without the
2729 * need of the program to be linked, being the value for that case 0.
2731 * But at the same time, some other methods require the program to be
2732 * linked for pname related to locations, so it would be inconsistent to
2733 * not do the same here. So we are:
2734 * * Return GL_INVALID_OPERATION if not linked only for locations.
2735 * * Setting a default value of 0, to be returned if not linked.
2739 if (pname
== GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
) {
2740 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2745 struct gl_program
*p
= sh
->Program
;
2747 case GL_ACTIVE_SUBROUTINES
:
2748 values
[0] = p
->sh
.NumSubroutineFunctions
;
2750 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2751 values
[0] = p
->sh
.NumSubroutineUniformRemapTable
;
2753 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2754 values
[0] = p
->sh
.NumSubroutineUniforms
;
2756 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2760 GLenum resource_type
;
2761 struct gl_program_resource
*res
;
2763 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2764 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2765 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2767 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2772 values
[0] = max_len
;
2775 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2779 GLenum resource_type
;
2780 struct gl_program_resource
*res
;
2782 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2783 for (i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2784 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2786 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2787 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2793 values
[0] = max_len
;
2797 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2804 find_compat_subroutine(struct gl_program
*p
, const struct glsl_type
*type
)
2808 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2809 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2810 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2811 if (fn
->types
[j
] == type
)
2819 _mesa_shader_write_subroutine_index(struct gl_context
*ctx
,
2820 struct gl_program
*p
)
2824 if (p
->sh
.NumSubroutineUniformRemapTable
== 0)
2829 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2838 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2839 for (j
= 0; j
< uni_count
; j
++) {
2840 val
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[i
+ j
];
2841 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2844 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2846 } while(i
< p
->sh
.NumSubroutineUniformRemapTable
);
2850 _mesa_shader_write_subroutine_indices(struct gl_context
*ctx
,
2851 gl_shader_stage stage
)
2853 if (ctx
->_Shader
->CurrentProgram
[stage
])
2854 _mesa_shader_write_subroutine_index(ctx
,
2855 ctx
->_Shader
->CurrentProgram
[stage
]);
2859 _mesa_program_init_subroutine_defaults(struct gl_context
*ctx
,
2860 struct gl_program
*p
)
2864 struct gl_subroutine_index_binding
*binding
= &ctx
->SubroutineIndex
[p
->info
.stage
];
2865 if (binding
->NumIndex
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2866 binding
->IndexPtr
= realloc(binding
->IndexPtr
,
2867 p
->sh
.NumSubroutineUniformRemapTable
* (sizeof(GLuint
)));
2868 binding
->NumIndex
= p
->sh
.NumSubroutineUniformRemapTable
;
2871 for (int i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2872 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2877 binding
->IndexPtr
[i
] = find_compat_subroutine(p
, uni
->type
);