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
? GL_TRUE
: GL_FALSE
;
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 if (sh
->CompileStatus
== compile_skipped
&& !sh
->FallbackSource
) {
1007 /* If shader was previously compiled back-up the source in case of cache
1010 sh
->FallbackSource
= sh
->Source
;
1011 sh
->Source
= source
;
1013 /* free old shader source string and install new one */
1014 free((void *)sh
->Source
);
1015 sh
->Source
= source
;
1019 sh
->SourceChecksum
= util_hash_crc32(sh
->Source
, strlen(sh
->Source
));
1028 _mesa_compile_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
1034 /* If the user called glCompileShader without first calling
1035 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
1037 sh
->CompileStatus
= compile_failure
;
1039 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1040 _mesa_log("GLSL source for %s shader %d:\n",
1041 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1042 _mesa_log("%s\n", sh
->Source
);
1045 /* this call will set the shader->CompileStatus field to indicate if
1046 * compilation was successful.
1048 _mesa_glsl_compile_shader(ctx
, sh
, false, false, false);
1050 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
1051 _mesa_write_shader_to_file(sh
);
1054 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1055 if (sh
->CompileStatus
) {
1057 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
1058 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
1060 _mesa_log("No GLSL IR for shader %d (shader may be from "
1061 "cache)\n", sh
->Name
);
1065 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
1067 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
1068 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
1069 _mesa_log("%s\n", sh
->InfoLog
);
1074 if (!sh
->CompileStatus
) {
1075 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1076 _mesa_log("GLSL source for %s shader %d:\n",
1077 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1078 _mesa_log("%s\n", sh
->Source
);
1079 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1082 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1083 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1084 sh
->Name
, sh
->InfoLog
);
1091 * Link a program's shaders.
1094 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1099 /* From the ARB_transform_feedback2 specification:
1100 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1101 * the name of a program being used by one or more transform feedback
1102 * objects, even if the objects are not currently bound or are paused."
1104 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1105 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1106 "glLinkProgram(transform feedback is using the program)");
1110 unsigned programs_in_use
= 0;
1112 for (unsigned stage
= 0; stage
< MESA_SHADER_STAGES
; stage
++) {
1113 if (ctx
->_Shader
->CurrentProgram
[stage
] &&
1114 ctx
->_Shader
->CurrentProgram
[stage
]->Id
== shProg
->Name
) {
1115 programs_in_use
|= 1 << stage
;
1119 FLUSH_VERTICES(ctx
, 0);
1120 _mesa_glsl_link_shader(ctx
, shProg
);
1122 /* From section 7.3 (Program Objects) of the OpenGL 4.5 spec:
1124 * "If LinkProgram or ProgramBinary successfully re-links a program
1125 * object that is active for any shader stage, then the newly generated
1126 * executable code will be installed as part of the current rendering
1127 * state for all shader stages where the program is active.
1128 * Additionally, the newly generated executable code is made part of
1129 * the state of any program pipeline for all stages where the program
1132 if (shProg
->data
->LinkStatus
&& programs_in_use
) {
1133 while (programs_in_use
) {
1134 const int stage
= u_bit_scan(&programs_in_use
);
1136 struct gl_program
*prog
= NULL
;
1137 if (shProg
->_LinkedShaders
[stage
])
1138 prog
= shProg
->_LinkedShaders
[stage
]->Program
;
1140 _mesa_use_program(ctx
, stage
, shProg
, prog
, ctx
->_Shader
);
1144 /* Capture .shader_test files. */
1145 const char *capture_path
= _mesa_get_shader_capture_path();
1146 if (shProg
->Name
!= 0 && shProg
->Name
!= ~0 && capture_path
!= NULL
) {
1148 char *filename
= ralloc_asprintf(NULL
, "%s/%u.shader_test",
1149 capture_path
, shProg
->Name
);
1150 file
= fopen(filename
, "w");
1152 fprintf(file
, "[require]\nGLSL%s >= %u.%02u\n",
1153 shProg
->IsES
? " ES" : "",
1154 shProg
->data
->Version
/ 100, shProg
->data
->Version
% 100);
1155 if (shProg
->SeparateShader
)
1156 fprintf(file
, "GL_ARB_separate_shader_objects\nSSO ENABLED\n");
1157 fprintf(file
, "\n");
1159 for (unsigned i
= 0; i
< shProg
->NumShaders
; i
++) {
1160 fprintf(file
, "[%s shader]\n%s\n",
1161 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1162 shProg
->Shaders
[i
]->Source
);
1166 _mesa_warning(ctx
, "Failed to open %s", filename
);
1169 ralloc_free(filename
);
1172 if (shProg
->data
->LinkStatus
== linking_failure
&&
1173 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1174 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1175 shProg
->Name
, shProg
->data
->InfoLog
);
1182 printf("Link %u shaders in program %u: %s\n",
1183 shProg
->NumShaders
, shProg
->Name
,
1184 shProg
->data
->LinkStatus
? "Success" : "Failed");
1186 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1187 printf(" shader %u, stage %u\n",
1188 shProg
->Shaders
[i
]->Name
,
1189 shProg
->Shaders
[i
]->Stage
);
1196 * Print basic shader info (for debug).
1199 print_shader_info(const struct gl_shader_program
*shProg
)
1203 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1204 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1206 printf(" %s shader %u, checksum %u\n",
1207 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1208 shProg
->Shaders
[i
]->Name
,
1209 shProg
->Shaders
[i
]->SourceChecksum
);
1211 printf(" %s shader %u\n",
1212 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1213 shProg
->Shaders
[i
]->Name
);
1216 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1217 printf(" vert prog %u\n",
1218 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1219 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1220 printf(" frag prog %u\n",
1221 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1222 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1223 printf(" geom prog %u\n",
1224 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1225 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1226 printf(" tesc prog %u\n",
1227 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1228 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1229 printf(" tese prog %u\n",
1230 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1235 * Use the named shader program for subsequent glUniform calls
1238 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1241 if ((shProg
!= NULL
) && !shProg
->data
->LinkStatus
) {
1242 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1243 "%s(program %u not linked)", caller
, shProg
->Name
);
1247 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1248 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1254 use_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1255 struct gl_shader_program
*shProg
, struct gl_program
*new_prog
,
1256 struct gl_pipeline_object
*shTarget
)
1258 struct gl_program
**target
;
1260 target
= &shTarget
->CurrentProgram
[stage
];
1262 _mesa_program_init_subroutine_defaults(ctx
, new_prog
);
1265 if (*target
!= new_prog
) {
1266 /* Program is current, flush it */
1267 if (shTarget
== ctx
->_Shader
) {
1268 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1271 /* If the shader is also bound as the current rendering shader, unbind
1272 * it from that binding point as well. This ensures that the correct
1273 * semantics of glDeleteProgram are maintained.
1276 case MESA_SHADER_VERTEX
:
1277 case MESA_SHADER_TESS_CTRL
:
1278 case MESA_SHADER_TESS_EVAL
:
1279 case MESA_SHADER_GEOMETRY
:
1280 case MESA_SHADER_COMPUTE
:
1281 /* Empty for now. */
1283 case MESA_SHADER_FRAGMENT
:
1284 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1285 _mesa_reference_program(ctx
,
1286 &ctx
->_Shader
->_CurrentFragmentProgram
,
1292 _mesa_reference_shader_program(ctx
,
1293 &shTarget
->ReferencedPrograms
[stage
],
1295 _mesa_reference_program(ctx
, target
, new_prog
);
1302 * Use the named shader program for subsequent rendering.
1305 _mesa_use_shader_program(struct gl_context
*ctx
,
1306 struct gl_shader_program
*shProg
)
1308 for (int i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
1309 struct gl_program
*new_prog
= NULL
;
1310 if (shProg
&& shProg
->_LinkedShaders
[i
])
1311 new_prog
= shProg
->_LinkedShaders
[i
]->Program
;
1312 use_program(ctx
, i
, shProg
, new_prog
, &ctx
->Shader
);
1314 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1319 * Do validation of the given shader program.
1320 * \param errMsg returns error message if validation fails.
1321 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1324 validate_shader_program(const struct gl_shader_program
*shProg
,
1327 if (!shProg
->data
->LinkStatus
) {
1331 /* From the GL spec, a program is invalid if any of these are true:
1333 any two active samplers in the current program object are of
1334 different types, but refer to the same texture image unit,
1336 any active sampler in the current program object refers to a texture
1337 image unit where fixed-function fragment processing accesses a
1338 texture target that does not match the sampler type, or
1340 the sum of the number of active samplers in the program and the
1341 number of texture image units enabled for fixed-function fragment
1342 processing exceeds the combined limit on the total number of texture
1343 image units allowed.
1347 * Check: any two active samplers in the current program object are of
1348 * different types, but refer to the same texture image unit,
1350 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1358 * Called via glValidateProgram()
1361 validate_program(struct gl_context
*ctx
, GLuint program
)
1363 struct gl_shader_program
*shProg
;
1364 char errMsg
[100] = "";
1366 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1371 shProg
->data
->Validated
= validate_shader_program(shProg
, errMsg
);
1372 if (!shProg
->data
->Validated
) {
1373 /* update info log */
1374 if (shProg
->data
->InfoLog
) {
1375 ralloc_free(shProg
->data
->InfoLog
);
1377 shProg
->data
->InfoLog
= ralloc_strdup(shProg
->data
, errMsg
);
1384 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1386 GET_CURRENT_CONTEXT(ctx
);
1387 attach_shader(ctx
, program
, shader
);
1392 _mesa_AttachShader(GLuint program
, GLuint shader
)
1394 GET_CURRENT_CONTEXT(ctx
);
1395 attach_shader(ctx
, program
, shader
);
1400 _mesa_CompileShader(GLuint shaderObj
)
1402 GET_CURRENT_CONTEXT(ctx
);
1403 if (MESA_VERBOSE
& VERBOSE_API
)
1404 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1405 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1406 "glCompileShader"));
1411 _mesa_CreateShader(GLenum type
)
1413 GET_CURRENT_CONTEXT(ctx
);
1414 if (MESA_VERBOSE
& VERBOSE_API
)
1415 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1416 return create_shader(ctx
, type
);
1420 GLhandleARB GLAPIENTRY
1421 _mesa_CreateShaderObjectARB(GLenum type
)
1423 GET_CURRENT_CONTEXT(ctx
);
1424 return create_shader(ctx
, type
);
1429 _mesa_CreateProgram(void)
1431 GET_CURRENT_CONTEXT(ctx
);
1432 if (MESA_VERBOSE
& VERBOSE_API
)
1433 _mesa_debug(ctx
, "glCreateProgram\n");
1434 return create_shader_program(ctx
);
1438 GLhandleARB GLAPIENTRY
1439 _mesa_CreateProgramObjectARB(void)
1441 GET_CURRENT_CONTEXT(ctx
);
1442 return create_shader_program(ctx
);
1447 _mesa_DeleteObjectARB(GLhandleARB obj
)
1449 if (MESA_VERBOSE
& VERBOSE_API
) {
1450 GET_CURRENT_CONTEXT(ctx
);
1451 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1455 GET_CURRENT_CONTEXT(ctx
);
1456 FLUSH_VERTICES(ctx
, 0);
1457 if (is_program(ctx
, obj
)) {
1458 delete_shader_program(ctx
, obj
);
1460 else if (is_shader(ctx
, obj
)) {
1461 delete_shader(ctx
, obj
);
1471 _mesa_DeleteProgram(GLuint name
)
1474 GET_CURRENT_CONTEXT(ctx
);
1475 FLUSH_VERTICES(ctx
, 0);
1476 delete_shader_program(ctx
, name
);
1482 _mesa_DeleteShader(GLuint name
)
1485 GET_CURRENT_CONTEXT(ctx
);
1486 FLUSH_VERTICES(ctx
, 0);
1487 delete_shader(ctx
, name
);
1493 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1495 GET_CURRENT_CONTEXT(ctx
);
1496 detach_shader(ctx
, program
, shader
);
1501 _mesa_DetachShader(GLuint program
, GLuint shader
)
1503 GET_CURRENT_CONTEXT(ctx
);
1504 detach_shader(ctx
, program
, shader
);
1509 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1510 GLsizei
* count
, GLhandleARB
* obj
)
1512 GET_CURRENT_CONTEXT(ctx
);
1513 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1518 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1519 GLsizei
*count
, GLuint
*obj
)
1521 GET_CURRENT_CONTEXT(ctx
);
1522 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1527 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1528 GLcharARB
* infoLog
)
1530 GET_CURRENT_CONTEXT(ctx
);
1531 if (is_program(ctx
, object
)) {
1532 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1534 else if (is_shader(ctx
, object
)) {
1535 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1538 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1544 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1546 GET_CURRENT_CONTEXT(ctx
);
1547 /* Implement in terms of GetProgramiv, GetShaderiv */
1548 if (is_program(ctx
, object
)) {
1549 if (pname
== GL_OBJECT_TYPE_ARB
) {
1550 *params
= GL_PROGRAM_OBJECT_ARB
;
1553 get_programiv(ctx
, object
, pname
, params
);
1556 else if (is_shader(ctx
, object
)) {
1557 if (pname
== GL_OBJECT_TYPE_ARB
) {
1558 *params
= GL_SHADER_OBJECT_ARB
;
1561 get_shaderiv(ctx
, object
, pname
, params
);
1565 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1571 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1574 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1575 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1576 params
[0] = (GLfloat
) iparams
[0];
1581 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1583 GET_CURRENT_CONTEXT(ctx
);
1584 get_programiv(ctx
, program
, pname
, params
);
1589 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1591 GET_CURRENT_CONTEXT(ctx
);
1592 get_shaderiv(ctx
, shader
, pname
, params
);
1597 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1598 GLsizei
*length
, GLchar
*infoLog
)
1600 GET_CURRENT_CONTEXT(ctx
);
1601 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1606 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1607 GLsizei
*length
, GLchar
*infoLog
)
1609 GET_CURRENT_CONTEXT(ctx
);
1610 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1615 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1616 GLsizei
*length
, GLchar
*sourceOut
)
1618 GET_CURRENT_CONTEXT(ctx
);
1619 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1623 GLhandleARB GLAPIENTRY
1624 _mesa_GetHandleARB(GLenum pname
)
1626 GET_CURRENT_CONTEXT(ctx
);
1627 return get_handle(ctx
, pname
);
1631 GLboolean GLAPIENTRY
1632 _mesa_IsProgram(GLuint name
)
1634 GET_CURRENT_CONTEXT(ctx
);
1635 return is_program(ctx
, name
);
1639 GLboolean GLAPIENTRY
1640 _mesa_IsShader(GLuint name
)
1642 GET_CURRENT_CONTEXT(ctx
);
1643 return is_shader(ctx
, name
);
1648 _mesa_LinkProgram(GLuint programObj
)
1650 GET_CURRENT_CONTEXT(ctx
);
1651 if (MESA_VERBOSE
& VERBOSE_API
)
1652 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1653 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1657 #ifdef ENABLE_SHADER_CACHE
1659 * Generate a SHA-1 hash value string for given source string.
1662 generate_sha1(const char *source
, char sha_str
[64])
1664 unsigned char sha
[20];
1665 _mesa_sha1_compute(source
, strlen(source
), sha
);
1666 _mesa_sha1_format(sha_str
, sha
);
1670 * Construct a full path for shader replacement functionality using
1673 * <path>/<stage prefix>_<CHECKSUM>.glsl
1676 construct_name(const gl_shader_stage stage
, const char *source
,
1680 static const char *types
[] = {
1681 "VS", "TC", "TE", "GS", "FS", "CS",
1684 generate_sha1(source
, sha
);
1685 return ralloc_asprintf(NULL
, "%s/%s_%s.glsl", path
, types
[stage
], sha
);
1689 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1692 dump_shader(const gl_shader_stage stage
, const char *source
)
1694 static bool path_exists
= true;
1701 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1703 path_exists
= false;
1707 char *name
= construct_name(stage
, source
, dump_path
);
1709 f
= fopen(name
, "w");
1714 GET_CURRENT_CONTEXT(ctx
);
1715 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1722 * Read shader source code from a file.
1723 * Useful for debugging to override an app's shader.
1726 read_shader(const gl_shader_stage stage
, const char *source
)
1729 static bool path_exists
= true;
1730 int len
, shader_size
= 0;
1737 read_path
= getenv("MESA_SHADER_READ_PATH");
1739 path_exists
= false;
1743 char *name
= construct_name(stage
, source
, read_path
);
1744 f
= fopen(name
, "r");
1749 /* allocate enough room for the entire shader */
1750 fseek(f
, 0, SEEK_END
);
1751 shader_size
= ftell(f
);
1753 assert(shader_size
);
1755 /* add one for terminating zero */
1758 buffer
= malloc(shader_size
);
1761 len
= fread(buffer
, 1, shader_size
, f
);
1769 #endif /* ENABLE_SHADER_CACHE */
1772 * Called via glShaderSource() and glShaderSourceARB() API functions.
1773 * Basically, concatenate the source code strings into one long string
1774 * and pass it to _mesa_shader_source().
1777 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1778 const GLchar
* const * string
, const GLint
* length
)
1780 GET_CURRENT_CONTEXT(ctx
);
1782 GLsizei i
, totalLength
;
1784 struct gl_shader
*sh
;
1786 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1790 if (string
== NULL
) {
1791 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1796 * This array holds offsets of where the appropriate string ends, thus the
1797 * last element will be set to the total length of the source code.
1799 offsets
= malloc(count
* sizeof(GLint
));
1800 if (offsets
== NULL
) {
1801 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1805 for (i
= 0; i
< count
; i
++) {
1806 if (string
[i
] == NULL
) {
1807 free((GLvoid
*) offsets
);
1808 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1809 "glShaderSourceARB(null string)");
1812 if (length
== NULL
|| length
[i
] < 0)
1813 offsets
[i
] = strlen(string
[i
]);
1815 offsets
[i
] = length
[i
];
1816 /* accumulate string lengths */
1818 offsets
[i
] += offsets
[i
- 1];
1821 /* Total length of source string is sum off all strings plus two.
1822 * One extra byte for terminating zero, another extra byte to silence
1823 * valgrind warnings in the parser/grammer code.
1825 totalLength
= offsets
[count
- 1] + 2;
1826 source
= malloc(totalLength
* sizeof(GLcharARB
));
1827 if (source
== NULL
) {
1828 free((GLvoid
*) offsets
);
1829 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1833 for (i
= 0; i
< count
; i
++) {
1834 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1835 memcpy(source
+ start
, string
[i
],
1836 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1838 source
[totalLength
- 1] = '\0';
1839 source
[totalLength
- 2] = '\0';
1841 #ifdef ENABLE_SHADER_CACHE
1842 GLcharARB
*replacement
;
1844 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1845 * if corresponding entry found from MESA_SHADER_READ_PATH.
1847 dump_shader(sh
->Stage
, source
);
1849 replacement
= read_shader(sh
->Stage
, source
);
1852 source
= replacement
;
1854 #endif /* ENABLE_SHADER_CACHE */
1856 shader_source(sh
, source
);
1863 _mesa_UseProgram(GLuint program
)
1865 GET_CURRENT_CONTEXT(ctx
);
1866 struct gl_shader_program
*shProg
;
1868 if (MESA_VERBOSE
& VERBOSE_API
)
1869 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1871 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1872 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1873 "glUseProgram(transform feedback active)");
1878 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1882 if (!shProg
->data
->LinkStatus
) {
1883 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1884 "glUseProgram(program %u not linked)", program
);
1889 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1890 print_shader_info(shProg
);
1897 /* The ARB_separate_shader_object spec says:
1899 * "The executable code for an individual shader stage is taken from
1900 * the current program for that stage. If there is a current program
1901 * object established by UseProgram, that program is considered current
1902 * for all stages. Otherwise, if there is a bound program pipeline
1903 * object (section 2.14.PPO), the program bound to the appropriate
1904 * stage of the pipeline object is considered current."
1907 /* Attach shader state to the binding point */
1908 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1909 /* Update the program */
1910 _mesa_use_shader_program(ctx
, shProg
);
1912 /* Must be done first: detach the progam */
1913 _mesa_use_shader_program(ctx
, shProg
);
1914 /* Unattach shader_state binding point */
1915 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1916 /* If a pipeline was bound, rebind it */
1917 if (ctx
->Pipeline
.Current
) {
1918 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1925 _mesa_ValidateProgram(GLuint program
)
1927 GET_CURRENT_CONTEXT(ctx
);
1928 validate_program(ctx
, program
);
1933 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1936 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1937 GLint
* range
, GLint
* precision
)
1939 const struct gl_program_constants
*limits
;
1940 const struct gl_precision
*p
;
1941 GET_CURRENT_CONTEXT(ctx
);
1943 switch (shadertype
) {
1944 case GL_VERTEX_SHADER
:
1945 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1947 case GL_FRAGMENT_SHADER
:
1948 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1951 _mesa_error(ctx
, GL_INVALID_ENUM
,
1952 "glGetShaderPrecisionFormat(shadertype)");
1956 switch (precisiontype
) {
1958 p
= &limits
->LowFloat
;
1960 case GL_MEDIUM_FLOAT
:
1961 p
= &limits
->MediumFloat
;
1964 p
= &limits
->HighFloat
;
1967 p
= &limits
->LowInt
;
1970 p
= &limits
->MediumInt
;
1973 p
= &limits
->HighInt
;
1976 _mesa_error(ctx
, GL_INVALID_ENUM
,
1977 "glGetShaderPrecisionFormat(precisiontype)");
1981 range
[0] = p
->RangeMin
;
1982 range
[1] = p
->RangeMax
;
1983 precision
[0] = p
->Precision
;
1988 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1991 _mesa_ReleaseShaderCompiler(void)
1993 _mesa_destroy_shader_compiler_caches();
1998 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
2001 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
2002 const void* binary
, GLint length
)
2004 GET_CURRENT_CONTEXT(ctx
);
2006 (void) binaryformat
;
2009 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
2010 * page 88 of the OpenGL 4.5 specs state:
2012 * "An INVALID_VALUE error is generated if count or length is negative.
2013 * An INVALID_ENUM error is generated if binaryformat is not a supported
2014 * format returned in SHADER_BINARY_FORMATS."
2016 if (n
< 0 || length
< 0) {
2017 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
2021 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
2026 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
2027 GLenum
*binaryFormat
, GLvoid
*binary
)
2029 struct gl_shader_program
*shProg
;
2030 GLsizei length_dummy
;
2031 GET_CURRENT_CONTEXT(ctx
);
2034 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
2038 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
2042 /* The ARB_get_program_binary spec says:
2044 * "If <length> is NULL, then no length is returned."
2046 * Ensure that length always points to valid storage to avoid multiple NULL
2047 * pointer checks below.
2050 length
= &length_dummy
;
2053 /* The ARB_get_program_binary spec says:
2055 * "When a program object's LINK_STATUS is FALSE, its program binary
2056 * length is zero, and a call to GetProgramBinary will generate an
2057 * INVALID_OPERATION error.
2059 if (!shProg
->data
->LinkStatus
) {
2060 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2061 "glGetProgramBinary(program %u not linked)",
2068 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2069 "glGetProgramBinary(driver supports zero binary formats)");
2071 (void) binaryFormat
;
2076 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
2077 const GLvoid
*binary
, GLsizei length
)
2079 struct gl_shader_program
*shProg
;
2080 GET_CURRENT_CONTEXT(ctx
);
2082 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
2086 (void) binaryFormat
;
2089 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2091 * "If a negative number is provided where an argument of type sizei or
2092 * sizeiptr is specified, an INVALID_VALUE error is generated."
2095 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
2099 /* The ARB_get_program_binary spec says:
2101 * "<binaryFormat> and <binary> must be those returned by a previous
2102 * call to GetProgramBinary, and <length> must be the length of the
2103 * program binary as returned by GetProgramBinary or GetProgramiv with
2104 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2105 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2108 * Since any value of binaryFormat passed "is not one of those specified as
2109 * allowable for [this] command, an INVALID_ENUM error is generated."
2111 shProg
->data
->LinkStatus
= linking_failure
;
2112 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
2117 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
2119 struct gl_shader_program
*shProg
;
2120 GET_CURRENT_CONTEXT(ctx
);
2122 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
2123 "glProgramParameteri");
2128 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
2129 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2130 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2131 * even be in the dispatch table, so we shouldn't need to expclicitly
2134 * On desktop, we ignore the 3.0+ requirement because it is silly.
2137 /* The ARB_get_program_binary extension spec says:
2139 * "An INVALID_VALUE error is generated if the <value> argument to
2140 * ProgramParameteri is not TRUE or FALSE."
2142 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2146 /* No need to notify the driver. Any changes will actually take effect
2147 * the next time the shader is linked.
2149 * The ARB_get_program_binary extension spec says:
2151 * "To indicate that a program binary is likely to be retrieved,
2152 * ProgramParameteri should be called with <pname>
2153 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2154 * will not be in effect until the next time LinkProgram or
2155 * ProgramBinary has been called successfully."
2157 * The resloution of issue 9 in the extension spec also says:
2159 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2160 * to indicate to the GL implementation that this program will
2161 * likely be saved with GetProgramBinary at some point. This will
2162 * give the GL implementation the opportunity to track any state
2163 * changes made to the program before being saved such that when it
2164 * is loaded again a recompile can be avoided."
2166 shProg
->BinaryRetreivableHint
= value
;
2169 case GL_PROGRAM_SEPARABLE
:
2170 /* Spec imply that the behavior is the same as ARB_get_program_binary
2171 * Chapter 7.3 Program Objects
2173 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2176 shProg
->SeparateShader
= value
;
2180 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2181 _mesa_enum_to_string(pname
));
2186 _mesa_error(ctx
, GL_INVALID_VALUE
,
2187 "glProgramParameteri(pname=%s, value=%d): "
2188 "value must be 0 or 1.",
2189 _mesa_enum_to_string(pname
),
2195 _mesa_use_program(struct gl_context
*ctx
, gl_shader_stage stage
,
2196 struct gl_shader_program
*shProg
, struct gl_program
*prog
,
2197 struct gl_pipeline_object
*shTarget
)
2199 use_program(ctx
, stage
, shProg
, prog
, shTarget
);
2204 * Copy program-specific data generated by linking from the gl_shader_program
2205 * object to the gl_program object referred to by the gl_linked_shader.
2207 * This function expects _mesa_reference_program() to have been previously
2208 * called setting the gl_linked_shaders program reference.
2211 _mesa_copy_linked_program_data(const struct gl_shader_program
*src
,
2212 struct gl_linked_shader
*dst_sh
)
2214 assert(dst_sh
->Program
);
2216 struct gl_program
*dst
= dst_sh
->Program
;
2218 dst
->info
.separate_shader
= src
->SeparateShader
;
2220 switch (dst_sh
->Stage
) {
2221 case MESA_SHADER_GEOMETRY
: {
2222 dst
->info
.gs
.vertices_in
= src
->Geom
.VerticesIn
;
2223 dst
->info
.gs
.uses_end_primitive
= src
->Geom
.UsesEndPrimitive
;
2224 dst
->info
.gs
.uses_streams
= src
->Geom
.UsesStreams
;
2227 case MESA_SHADER_FRAGMENT
: {
2228 dst
->info
.fs
.depth_layout
= src
->FragDepthLayout
;
2231 case MESA_SHADER_COMPUTE
: {
2232 dst
->info
.cs
.shared_size
= src
->Comp
.SharedSize
;
2241 * ARB_separate_shader_objects: Compile & Link Program
2244 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2245 const GLchar
* const *strings
)
2247 GET_CURRENT_CONTEXT(ctx
);
2249 const GLuint shader
= create_shader(ctx
, type
);
2253 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2254 * GL_INVALID_VALUE should be generated if count < 0
2257 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2262 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2264 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2265 _mesa_compile_shader(ctx
, sh
);
2267 program
= create_shader_program(ctx
);
2269 struct gl_shader_program
*shProg
;
2270 GLint compiled
= GL_FALSE
;
2272 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2274 shProg
->SeparateShader
= GL_TRUE
;
2276 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2278 attach_shader(ctx
, program
, shader
);
2279 _mesa_link_program(ctx
, shProg
);
2280 detach_shader(ctx
, program
, shader
);
2284 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2285 append
-error
-to
-info
-log
;
2286 shProg
->data
->LinkStatus
= linking_failure
;
2291 ralloc_strcat(&shProg
->data
->InfoLog
, sh
->InfoLog
);
2294 delete_shader(ctx
, shader
);
2302 * For GL_ARB_tessellation_shader
2304 extern void GLAPIENTRY
2305 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2307 GET_CURRENT_CONTEXT(ctx
);
2309 if (!_mesa_has_tessellation(ctx
)) {
2310 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2314 if (pname
!= GL_PATCH_VERTICES
) {
2315 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2319 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2320 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2324 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2328 extern void GLAPIENTRY
2329 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2331 GET_CURRENT_CONTEXT(ctx
);
2333 if (!_mesa_has_tessellation(ctx
)) {
2334 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2339 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2340 FLUSH_VERTICES(ctx
, 0);
2341 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2342 4 * sizeof(GLfloat
));
2343 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2345 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2346 FLUSH_VERTICES(ctx
, 0);
2347 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2348 2 * sizeof(GLfloat
));
2349 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2352 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2358 * ARB_shader_subroutine
2361 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2364 GET_CURRENT_CONTEXT(ctx
);
2365 const char *api_name
= "glGetSubroutineUniformLocation";
2366 struct gl_shader_program
*shProg
;
2367 GLenum resource_type
;
2368 gl_shader_stage stage
;
2370 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2371 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2375 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2376 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2380 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2384 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2385 if (!shProg
->_LinkedShaders
[stage
]) {
2386 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2390 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2391 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2395 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2398 GET_CURRENT_CONTEXT(ctx
);
2399 const char *api_name
= "glGetSubroutineIndex";
2400 struct gl_shader_program
*shProg
;
2401 struct gl_program_resource
*res
;
2402 GLenum resource_type
;
2403 gl_shader_stage stage
;
2405 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2406 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2410 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2411 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2415 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2419 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2420 if (!shProg
->_LinkedShaders
[stage
]) {
2421 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2425 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2426 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2431 return _mesa_program_resource_index(shProg
, res
);
2436 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2437 GLuint index
, GLenum pname
, GLint
*values
)
2439 GET_CURRENT_CONTEXT(ctx
);
2440 const char *api_name
= "glGetActiveSubroutineUniformiv";
2441 struct gl_shader_program
*shProg
;
2442 struct gl_linked_shader
*sh
;
2443 gl_shader_stage stage
;
2444 struct gl_program_resource
*res
;
2445 const struct gl_uniform_storage
*uni
;
2446 GLenum resource_type
;
2449 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2450 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2454 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2455 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2459 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2463 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2464 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2466 sh
= shProg
->_LinkedShaders
[stage
];
2468 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2472 struct gl_program
*p
= shProg
->_LinkedShaders
[stage
]->Program
;
2473 if (index
>= p
->sh
.NumSubroutineUniforms
) {
2474 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2479 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2480 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2483 values
[0] = uni
->num_compatible_subroutines
;
2487 case GL_COMPATIBLE_SUBROUTINES
: {
2488 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2492 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2493 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2494 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2495 if (fn
->types
[j
] == uni
->type
) {
2496 values
[count
++] = i
;
2504 case GL_UNIFORM_SIZE
:
2505 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2508 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2511 case GL_UNIFORM_NAME_LENGTH
:
2512 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2514 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2515 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2519 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2526 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2527 GLuint index
, GLsizei bufsize
,
2528 GLsizei
*length
, GLchar
*name
)
2530 GET_CURRENT_CONTEXT(ctx
);
2531 const char *api_name
= "glGetActiveSubroutineUniformName";
2532 struct gl_shader_program
*shProg
;
2533 GLenum resource_type
;
2534 gl_shader_stage stage
;
2536 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2537 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2541 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2542 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2546 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2550 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2551 if (!shProg
->_LinkedShaders
[stage
]) {
2552 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2556 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2557 /* get program resource name */
2558 _mesa_get_program_resource_name(shProg
, resource_type
,
2560 length
, name
, api_name
);
2565 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2566 GLuint index
, GLsizei bufsize
,
2567 GLsizei
*length
, GLchar
*name
)
2569 GET_CURRENT_CONTEXT(ctx
);
2570 const char *api_name
= "glGetActiveSubroutineName";
2571 struct gl_shader_program
*shProg
;
2572 GLenum resource_type
;
2573 gl_shader_stage stage
;
2575 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2576 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2580 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2581 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2585 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2589 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2590 if (!shProg
->_LinkedShaders
[stage
]) {
2591 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2594 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2595 _mesa_get_program_resource_name(shProg
, resource_type
,
2597 length
, name
, api_name
);
2601 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2602 const GLuint
*indices
)
2604 GET_CURRENT_CONTEXT(ctx
);
2605 const char *api_name
= "glUniformSubroutinesuiv";
2606 gl_shader_stage stage
;
2609 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2610 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2614 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2615 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2619 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2620 struct gl_program
*p
= ctx
->_Shader
->CurrentProgram
[stage
];
2622 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2626 if (count
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2627 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2633 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2639 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2642 for (j
= i
; j
< i
+ uni_count
; j
++) {
2643 struct gl_subroutine_function
*subfn
= NULL
;
2644 if (indices
[j
] > p
->sh
.MaxSubroutineFunctionIndex
) {
2645 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2649 for (f
= 0; f
< p
->sh
.NumSubroutineFunctions
; f
++) {
2650 if (p
->sh
.SubroutineFunctions
[f
].index
== indices
[j
])
2651 subfn
= &p
->sh
.SubroutineFunctions
[f
];
2658 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2659 if (subfn
->types
[k
] == uni
->type
)
2662 if (k
== subfn
->num_compat_types
) {
2663 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2667 ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[j
] = indices
[j
];
2672 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2677 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2680 GET_CURRENT_CONTEXT(ctx
);
2681 const char *api_name
= "glGetUniformSubroutineuiv";
2682 gl_shader_stage stage
;
2684 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2685 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2689 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2690 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2694 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2695 struct gl_program
*p
= ctx
->_Shader
->CurrentProgram
[stage
];
2697 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2701 if (location
>= p
->sh
.NumSubroutineUniformRemapTable
) {
2702 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2706 *params
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[location
];
2711 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2712 GLenum pname
, GLint
*values
)
2714 GET_CURRENT_CONTEXT(ctx
);
2715 const char *api_name
= "glGetProgramStageiv";
2716 struct gl_shader_program
*shProg
;
2717 struct gl_linked_shader
*sh
;
2718 gl_shader_stage stage
;
2720 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2721 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2725 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2726 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2730 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2734 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2735 sh
= shProg
->_LinkedShaders
[stage
];
2737 /* ARB_shader_subroutine doesn't ask the program to be linked, or list any
2738 * INVALID_OPERATION in the case of not be linked.
2740 * And for some pnames, like GL_ACTIVE_SUBROUTINE_UNIFORMS, you can ask the
2741 * same info using other specs (ARB_program_interface_query), without the
2742 * need of the program to be linked, being the value for that case 0.
2744 * But at the same time, some other methods require the program to be
2745 * linked for pname related to locations, so it would be inconsistent to
2746 * not do the same here. So we are:
2747 * * Return GL_INVALID_OPERATION if not linked only for locations.
2748 * * Setting a default value of 0, to be returned if not linked.
2752 if (pname
== GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
) {
2753 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2758 struct gl_program
*p
= sh
->Program
;
2760 case GL_ACTIVE_SUBROUTINES
:
2761 values
[0] = p
->sh
.NumSubroutineFunctions
;
2763 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2764 values
[0] = p
->sh
.NumSubroutineUniformRemapTable
;
2766 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2767 values
[0] = p
->sh
.NumSubroutineUniforms
;
2769 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2773 GLenum resource_type
;
2774 struct gl_program_resource
*res
;
2776 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2777 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2778 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2780 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2785 values
[0] = max_len
;
2788 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2792 GLenum resource_type
;
2793 struct gl_program_resource
*res
;
2795 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2796 for (i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2797 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2799 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2800 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2806 values
[0] = max_len
;
2810 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2817 find_compat_subroutine(struct gl_program
*p
, const struct glsl_type
*type
)
2821 for (i
= 0; i
< p
->sh
.NumSubroutineFunctions
; i
++) {
2822 struct gl_subroutine_function
*fn
= &p
->sh
.SubroutineFunctions
[i
];
2823 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2824 if (fn
->types
[j
] == type
)
2832 _mesa_shader_write_subroutine_index(struct gl_context
*ctx
,
2833 struct gl_program
*p
)
2837 if (p
->sh
.NumSubroutineUniformRemapTable
== 0)
2842 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2851 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2852 for (j
= 0; j
< uni_count
; j
++) {
2853 val
= ctx
->SubroutineIndex
[p
->info
.stage
].IndexPtr
[i
+ j
];
2854 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2857 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2859 } while(i
< p
->sh
.NumSubroutineUniformRemapTable
);
2863 _mesa_shader_write_subroutine_indices(struct gl_context
*ctx
,
2864 gl_shader_stage stage
)
2866 if (ctx
->_Shader
->CurrentProgram
[stage
])
2867 _mesa_shader_write_subroutine_index(ctx
,
2868 ctx
->_Shader
->CurrentProgram
[stage
]);
2872 _mesa_program_init_subroutine_defaults(struct gl_context
*ctx
,
2873 struct gl_program
*p
)
2877 struct gl_subroutine_index_binding
*binding
= &ctx
->SubroutineIndex
[p
->info
.stage
];
2878 if (binding
->NumIndex
!= p
->sh
.NumSubroutineUniformRemapTable
) {
2879 binding
->IndexPtr
= realloc(binding
->IndexPtr
,
2880 p
->sh
.NumSubroutineUniformRemapTable
* (sizeof(GLuint
)));
2881 binding
->NumIndex
= p
->sh
.NumSubroutineUniformRemapTable
;
2884 for (int i
= 0; i
< p
->sh
.NumSubroutineUniformRemapTable
; i
++) {
2885 struct gl_uniform_storage
*uni
= p
->sh
.SubroutineUniformRemapTable
[i
];
2890 binding
->IndexPtr
[i
] = find_compat_subroutine(p
, uni
->type
);