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"
64 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
67 _mesa_get_shader_flags(void)
69 GLbitfield flags
= 0x0;
70 const char *env
= getenv("MESA_GLSL");
73 if (strstr(env
, "dump_on_error"))
74 flags
|= GLSL_DUMP_ON_ERROR
;
75 else if (strstr(env
, "dump"))
77 if (strstr(env
, "log"))
79 if (strstr(env
, "nopvert"))
80 flags
|= GLSL_NOP_VERT
;
81 if (strstr(env
, "nopfrag"))
82 flags
|= GLSL_NOP_FRAG
;
83 if (strstr(env
, "nopt"))
85 else if (strstr(env
, "opt"))
87 if (strstr(env
, "uniform"))
88 flags
|= GLSL_UNIFORMS
;
89 if (strstr(env
, "useprog"))
90 flags
|= GLSL_USE_PROG
;
91 if (strstr(env
, "errors"))
92 flags
|= GLSL_REPORT_ERRORS
;
99 * Memoized version of getenv("MESA_SHADER_CAPTURE_PATH").
102 _mesa_get_shader_capture_path(void)
104 static bool read_env_var
= false;
105 static const char *path
= NULL
;
108 path
= getenv("MESA_SHADER_CAPTURE_PATH");
116 * Initialize context's shader state.
119 _mesa_init_shader_state(struct gl_context
*ctx
)
121 /* Device drivers may override these to control what kind of instructions
122 * are generated by the GLSL compiler.
124 struct gl_shader_compiler_options options
;
128 memset(&options
, 0, sizeof(options
));
129 options
.MaxUnrollIterations
= 32;
130 options
.MaxIfDepth
= UINT_MAX
;
132 for (sh
= 0; sh
< MESA_SHADER_STAGES
; ++sh
)
133 memcpy(&ctx
->Const
.ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
135 ctx
->Shader
.Flags
= _mesa_get_shader_flags();
137 if (ctx
->Shader
.Flags
!= 0)
138 ctx
->Const
.GenerateTemporaryNames
= true;
140 /* Extended for ARB_separate_shader_objects */
141 ctx
->Shader
.RefCount
= 1;
142 mtx_init(&ctx
->Shader
.Mutex
, mtx_plain
);
144 ctx
->TessCtrlProgram
.patch_vertices
= 3;
145 for (i
= 0; i
< 4; ++i
)
146 ctx
->TessCtrlProgram
.patch_default_outer_level
[i
] = 1.0;
147 for (i
= 0; i
< 2; ++i
)
148 ctx
->TessCtrlProgram
.patch_default_inner_level
[i
] = 1.0;
153 * Free the per-context shader-related state.
156 _mesa_free_shader_state(struct gl_context
*ctx
)
159 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
160 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[i
],
163 _mesa_reference_shader_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
,
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
->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
->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
->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
->LinkStatus
;
641 case GL_VALIDATE_STATUS
:
642 *params
= shProg
->Validated
;
644 case GL_INFO_LOG_LENGTH
:
645 *params
= (shProg
->InfoLog
&& shProg
->InfoLog
[0] != '\0') ?
646 strlen(shProg
->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
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
661 for (*params
= 0, i
= 0; i
< num_uniforms
; i
++) {
662 if (!shProg
->UniformStorage
[i
].is_shader_storage
)
667 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
670 const unsigned num_uniforms
=
671 shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
673 for (i
= 0; i
< num_uniforms
; i
++) {
674 if (shProg
->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
->UniformStorage
[i
].name
) + 1 +
681 ((shProg
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
690 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
693 *params
= shProg
->TransformFeedback
.NumVarying
;
695 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
701 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
702 /* Add one for the terminating NUL character.
705 strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
714 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
717 *params
= shProg
->TransformFeedback
.BufferMode
;
719 case GL_GEOMETRY_VERTICES_OUT
:
722 if (check_gs_query(ctx
, shProg
)) {
723 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
724 info
.Geom
.VerticesOut
;
727 case GL_GEOMETRY_SHADER_INVOCATIONS
:
728 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
730 if (check_gs_query(ctx
, shProg
)) {
731 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
732 info
.Geom
.Invocations
;
735 case GL_GEOMETRY_INPUT_TYPE
:
738 if (check_gs_query(ctx
, shProg
)) {
739 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
743 case GL_GEOMETRY_OUTPUT_TYPE
:
746 if (check_gs_query(ctx
, shProg
)) {
747 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
748 info
.Geom
.OutputType
;
751 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
758 for (i
= 0; i
< shProg
->NumUniformBlocks
; i
++) {
759 /* Add one for the terminating NUL character.
761 const GLint len
= strlen(shProg
->UniformBlocks
[i
].Name
) + 1;
770 case GL_ACTIVE_UNIFORM_BLOCKS
:
774 *params
= shProg
->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
->NumAtomicBuffers
;
797 case GL_COMPUTE_WORK_GROUP_SIZE
: {
799 if (!_mesa_has_compute_shaders(ctx
))
801 if (!shProg
->LinkStatus
) {
802 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
806 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
807 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
811 for (i
= 0; i
< 3; i
++)
812 params
[i
] = shProg
->Comp
.LocalSize
[i
];
815 case GL_PROGRAM_SEPARABLE
:
816 /* If the program has not been linked, return initial value 0. */
817 *params
= (shProg
->LinkStatus
== GL_FALSE
) ? 0 : shProg
->SeparateShader
;
820 /* ARB_tessellation_shader */
821 case GL_TESS_CONTROL_OUTPUT_VERTICES
:
824 if (check_tcs_query(ctx
, shProg
)) {
825 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->
826 info
.TessCtrl
.VerticesOut
;
829 case GL_TESS_GEN_MODE
:
832 if (check_tes_query(ctx
, shProg
)) {
833 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
834 info
.TessEval
.PrimitiveMode
;
837 case GL_TESS_GEN_SPACING
:
840 if (check_tes_query(ctx
, shProg
)) {
841 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
842 info
.TessEval
.Spacing
;
845 case GL_TESS_GEN_VERTEX_ORDER
:
848 if (check_tes_query(ctx
, shProg
)) {
849 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
850 info
.TessEval
.VertexOrder
;
853 case GL_TESS_GEN_POINT_MODE
:
856 if (check_tes_query(ctx
, shProg
)) {
857 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
858 info
.TessEval
.PointMode
;
865 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
866 _mesa_enum_to_string(pname
));
871 * glGetShaderiv() - get GLSL shader state
874 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
876 struct gl_shader
*shader
=
877 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
885 *params
= shader
->Type
;
887 case GL_DELETE_STATUS
:
888 *params
= shader
->DeletePending
;
890 case GL_COMPILE_STATUS
:
891 *params
= shader
->CompileStatus
;
893 case GL_INFO_LOG_LENGTH
:
894 *params
= (shader
->InfoLog
&& shader
->InfoLog
[0] != '\0') ?
895 strlen(shader
->InfoLog
) + 1 : 0;
897 case GL_SHADER_SOURCE_LENGTH
:
898 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
901 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
908 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
909 GLsizei
*length
, GLchar
*infoLog
)
911 struct gl_shader_program
*shProg
;
913 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
914 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
916 * "If a negative number is provided where an argument of type sizei or
917 * sizeiptr is specified, an INVALID_VALUE error is generated."
920 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(bufSize < 0)");
924 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
925 "glGetProgramInfoLog(program)");
930 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
935 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
936 GLsizei
*length
, GLchar
*infoLog
)
938 struct gl_shader
*sh
;
940 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
941 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
943 * "If a negative number is provided where an argument of type sizei or
944 * sizeiptr is specified, an INVALID_VALUE error is generated."
947 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(bufSize < 0)");
951 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderInfoLog(shader)");
956 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
961 * Return shader source code.
964 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
965 GLsizei
*length
, GLchar
*sourceOut
)
967 struct gl_shader
*sh
;
970 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderSource(bufSize < 0)");
974 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
978 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
983 * Set/replace shader source code. A helper function used by
984 * glShaderSource[ARB].
987 shader_source(struct gl_shader
*sh
, const GLchar
*source
)
991 /* free old shader source string and install new one */
992 free((void *)sh
->Source
);
995 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
1004 _mesa_compile_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
1010 /* If the user called glCompileShader without first calling
1011 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
1013 sh
->CompileStatus
= GL_FALSE
;
1015 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1016 _mesa_log("GLSL source for %s shader %d:\n",
1017 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1018 _mesa_log("%s\n", sh
->Source
);
1021 /* this call will set the shader->CompileStatus field to indicate if
1022 * compilation was successful.
1024 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
1026 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
1027 _mesa_write_shader_to_file(sh
);
1030 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1031 if (sh
->CompileStatus
) {
1033 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
1034 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
1036 _mesa_log("No GLSL IR for shader %d (shader may be from "
1037 "cache)\n", sh
->Name
);
1041 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
1043 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
1044 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
1045 _mesa_log("%s\n", sh
->InfoLog
);
1050 if (!sh
->CompileStatus
) {
1051 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1052 _mesa_log("GLSL source for %s shader %d:\n",
1053 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1054 _mesa_log("%s\n", sh
->Source
);
1055 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1058 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1059 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1060 sh
->Name
, sh
->InfoLog
);
1067 * Link a program's shaders.
1070 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1075 /* From the ARB_transform_feedback2 specification:
1076 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1077 * the name of a program being used by one or more transform feedback
1078 * objects, even if the objects are not currently bound or are paused."
1080 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1081 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1082 "glLinkProgram(transform feedback is using the program)");
1086 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1088 _mesa_glsl_link_shader(ctx
, shProg
);
1090 /* Capture .shader_test files. */
1091 const char *capture_path
= _mesa_get_shader_capture_path();
1092 if (shProg
->Name
!= 0 && shProg
->Name
!= ~0 && capture_path
!= NULL
) {
1094 char *filename
= ralloc_asprintf(NULL
, "%s/%u.shader_test",
1095 capture_path
, shProg
->Name
);
1096 file
= fopen(filename
, "w");
1098 fprintf(file
, "[require]\nGLSL%s >= %u.%02u\n",
1099 shProg
->IsES
? " ES" : "",
1100 shProg
->Version
/ 100, shProg
->Version
% 100);
1101 if (shProg
->SeparateShader
)
1102 fprintf(file
, "GL_ARB_separate_shader_objects\nSSO ENABLED\n");
1103 fprintf(file
, "\n");
1105 for (unsigned i
= 0; i
< shProg
->NumShaders
; i
++) {
1106 fprintf(file
, "[%s shader]\n%s\n",
1107 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1108 shProg
->Shaders
[i
]->Source
);
1112 _mesa_warning(ctx
, "Failed to open %s", filename
);
1115 ralloc_free(filename
);
1118 if (shProg
->LinkStatus
== GL_FALSE
&&
1119 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1120 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1121 shProg
->Name
, shProg
->InfoLog
);
1128 printf("Link %u shaders in program %u: %s\n",
1129 shProg
->NumShaders
, shProg
->Name
,
1130 shProg
->LinkStatus
? "Success" : "Failed");
1132 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1133 printf(" shader %u, stage %u\n",
1134 shProg
->Shaders
[i
]->Name
,
1135 shProg
->Shaders
[i
]->Stage
);
1142 * Print basic shader info (for debug).
1145 print_shader_info(const struct gl_shader_program
*shProg
)
1149 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1150 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1151 printf(" %s shader %u, checksum %u\n",
1152 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1153 shProg
->Shaders
[i
]->Name
,
1154 shProg
->Shaders
[i
]->SourceChecksum
);
1156 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1157 printf(" vert prog %u\n",
1158 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1159 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1160 printf(" frag prog %u\n",
1161 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1162 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1163 printf(" geom prog %u\n",
1164 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1165 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1166 printf(" tesc prog %u\n",
1167 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1168 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1169 printf(" tese prog %u\n",
1170 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1175 * Use the named shader program for subsequent glUniform calls
1178 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1181 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1182 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1183 "%s(program %u not linked)", caller
, shProg
->Name
);
1187 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1188 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1194 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1195 struct gl_shader_program
*shProg
,
1196 struct gl_pipeline_object
*shTarget
)
1198 struct gl_shader_program
**target
;
1200 target
= &shTarget
->CurrentProgram
[stage
];
1201 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1205 _mesa_shader_program_init_subroutine_defaults(ctx
, shProg
);
1207 if (*target
!= shProg
) {
1208 /* Program is current, flush it */
1209 if (shTarget
== ctx
->_Shader
) {
1210 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1213 /* If the shader is also bound as the current rendering shader, unbind
1214 * it from that binding point as well. This ensures that the correct
1215 * semantics of glDeleteProgram are maintained.
1218 case MESA_SHADER_VERTEX
:
1219 case MESA_SHADER_TESS_CTRL
:
1220 case MESA_SHADER_TESS_EVAL
:
1221 case MESA_SHADER_GEOMETRY
:
1222 case MESA_SHADER_COMPUTE
:
1223 /* Empty for now. */
1225 case MESA_SHADER_FRAGMENT
:
1226 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1227 _mesa_reference_shader_program(ctx
,
1228 &ctx
->_Shader
->_CurrentFragmentProgram
,
1234 _mesa_reference_shader_program(ctx
, target
, shProg
);
1241 * Use the named shader program for subsequent rendering.
1244 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1247 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1248 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1249 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1254 * Do validation of the given shader program.
1255 * \param errMsg returns error message if validation fails.
1256 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1259 validate_shader_program(const struct gl_shader_program
*shProg
,
1262 if (!shProg
->LinkStatus
) {
1266 /* From the GL spec, a program is invalid if any of these are true:
1268 any two active samplers in the current program object are of
1269 different types, but refer to the same texture image unit,
1271 any active sampler in the current program object refers to a texture
1272 image unit where fixed-function fragment processing accesses a
1273 texture target that does not match the sampler type, or
1275 the sum of the number of active samplers in the program and the
1276 number of texture image units enabled for fixed-function fragment
1277 processing exceeds the combined limit on the total number of texture
1278 image units allowed.
1282 * Check: any two active samplers in the current program object are of
1283 * different types, but refer to the same texture image unit,
1285 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1293 * Called via glValidateProgram()
1296 validate_program(struct gl_context
*ctx
, GLuint program
)
1298 struct gl_shader_program
*shProg
;
1299 char errMsg
[100] = "";
1301 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1306 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1307 if (!shProg
->Validated
) {
1308 /* update info log */
1309 if (shProg
->InfoLog
) {
1310 ralloc_free(shProg
->InfoLog
);
1312 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1319 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1321 GET_CURRENT_CONTEXT(ctx
);
1322 attach_shader(ctx
, program
, shader
);
1327 _mesa_AttachShader(GLuint program
, GLuint shader
)
1329 GET_CURRENT_CONTEXT(ctx
);
1330 attach_shader(ctx
, program
, shader
);
1335 _mesa_CompileShader(GLuint shaderObj
)
1337 GET_CURRENT_CONTEXT(ctx
);
1338 if (MESA_VERBOSE
& VERBOSE_API
)
1339 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1340 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1341 "glCompileShader"));
1346 _mesa_CreateShader(GLenum type
)
1348 GET_CURRENT_CONTEXT(ctx
);
1349 if (MESA_VERBOSE
& VERBOSE_API
)
1350 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1351 return create_shader(ctx
, type
);
1355 GLhandleARB GLAPIENTRY
1356 _mesa_CreateShaderObjectARB(GLenum type
)
1358 GET_CURRENT_CONTEXT(ctx
);
1359 return create_shader(ctx
, type
);
1364 _mesa_CreateProgram(void)
1366 GET_CURRENT_CONTEXT(ctx
);
1367 if (MESA_VERBOSE
& VERBOSE_API
)
1368 _mesa_debug(ctx
, "glCreateProgram\n");
1369 return create_shader_program(ctx
);
1373 GLhandleARB GLAPIENTRY
1374 _mesa_CreateProgramObjectARB(void)
1376 GET_CURRENT_CONTEXT(ctx
);
1377 return create_shader_program(ctx
);
1382 _mesa_DeleteObjectARB(GLhandleARB obj
)
1384 if (MESA_VERBOSE
& VERBOSE_API
) {
1385 GET_CURRENT_CONTEXT(ctx
);
1386 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1390 GET_CURRENT_CONTEXT(ctx
);
1391 FLUSH_VERTICES(ctx
, 0);
1392 if (is_program(ctx
, obj
)) {
1393 delete_shader_program(ctx
, obj
);
1395 else if (is_shader(ctx
, obj
)) {
1396 delete_shader(ctx
, obj
);
1406 _mesa_DeleteProgram(GLuint name
)
1409 GET_CURRENT_CONTEXT(ctx
);
1410 FLUSH_VERTICES(ctx
, 0);
1411 delete_shader_program(ctx
, name
);
1417 _mesa_DeleteShader(GLuint name
)
1420 GET_CURRENT_CONTEXT(ctx
);
1421 FLUSH_VERTICES(ctx
, 0);
1422 delete_shader(ctx
, name
);
1428 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1430 GET_CURRENT_CONTEXT(ctx
);
1431 detach_shader(ctx
, program
, shader
);
1436 _mesa_DetachShader(GLuint program
, GLuint shader
)
1438 GET_CURRENT_CONTEXT(ctx
);
1439 detach_shader(ctx
, program
, shader
);
1444 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1445 GLsizei
* count
, GLhandleARB
* obj
)
1447 GET_CURRENT_CONTEXT(ctx
);
1448 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1453 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1454 GLsizei
*count
, GLuint
*obj
)
1456 GET_CURRENT_CONTEXT(ctx
);
1457 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1462 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1463 GLcharARB
* infoLog
)
1465 GET_CURRENT_CONTEXT(ctx
);
1466 if (is_program(ctx
, object
)) {
1467 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1469 else if (is_shader(ctx
, object
)) {
1470 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1473 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1479 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1481 GET_CURRENT_CONTEXT(ctx
);
1482 /* Implement in terms of GetProgramiv, GetShaderiv */
1483 if (is_program(ctx
, object
)) {
1484 if (pname
== GL_OBJECT_TYPE_ARB
) {
1485 *params
= GL_PROGRAM_OBJECT_ARB
;
1488 get_programiv(ctx
, object
, pname
, params
);
1491 else if (is_shader(ctx
, object
)) {
1492 if (pname
== GL_OBJECT_TYPE_ARB
) {
1493 *params
= GL_SHADER_OBJECT_ARB
;
1496 get_shaderiv(ctx
, object
, pname
, params
);
1500 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1506 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1509 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1510 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1511 params
[0] = (GLfloat
) iparams
[0];
1516 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1518 GET_CURRENT_CONTEXT(ctx
);
1519 get_programiv(ctx
, program
, pname
, params
);
1524 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1526 GET_CURRENT_CONTEXT(ctx
);
1527 get_shaderiv(ctx
, shader
, pname
, params
);
1532 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1533 GLsizei
*length
, GLchar
*infoLog
)
1535 GET_CURRENT_CONTEXT(ctx
);
1536 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1541 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1542 GLsizei
*length
, GLchar
*infoLog
)
1544 GET_CURRENT_CONTEXT(ctx
);
1545 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1550 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1551 GLsizei
*length
, GLchar
*sourceOut
)
1553 GET_CURRENT_CONTEXT(ctx
);
1554 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1558 GLhandleARB GLAPIENTRY
1559 _mesa_GetHandleARB(GLenum pname
)
1561 GET_CURRENT_CONTEXT(ctx
);
1562 return get_handle(ctx
, pname
);
1566 GLboolean GLAPIENTRY
1567 _mesa_IsProgram(GLuint name
)
1569 GET_CURRENT_CONTEXT(ctx
);
1570 return is_program(ctx
, name
);
1574 GLboolean GLAPIENTRY
1575 _mesa_IsShader(GLuint name
)
1577 GET_CURRENT_CONTEXT(ctx
);
1578 return is_shader(ctx
, name
);
1583 _mesa_LinkProgram(GLuint programObj
)
1585 GET_CURRENT_CONTEXT(ctx
);
1586 if (MESA_VERBOSE
& VERBOSE_API
)
1587 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1588 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1592 #if defined(HAVE_SHA1)
1594 * Generate a SHA-1 hash value string for given source string.
1597 generate_sha1(const char *source
, char sha_str
[64])
1599 unsigned char sha
[20];
1600 _mesa_sha1_compute(source
, strlen(source
), sha
);
1601 _mesa_sha1_format(sha_str
, sha
);
1605 * Construct a full path for shader replacement functionality using
1608 * <path>/<stage prefix>_<CHECKSUM>.glsl
1611 construct_name(const gl_shader_stage stage
, const char *source
,
1615 static const char *types
[] = {
1616 "VS", "TC", "TE", "GS", "FS", "CS",
1619 generate_sha1(source
, sha
);
1620 return ralloc_asprintf(NULL
, "%s/%s_%s.glsl", path
, types
[stage
], sha
);
1624 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1627 dump_shader(const gl_shader_stage stage
, const char *source
)
1629 static bool path_exists
= true;
1636 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1638 path_exists
= false;
1642 char *name
= construct_name(stage
, source
, dump_path
);
1644 f
= fopen(name
, "w");
1649 GET_CURRENT_CONTEXT(ctx
);
1650 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1657 * Read shader source code from a file.
1658 * Useful for debugging to override an app's shader.
1661 read_shader(const gl_shader_stage stage
, const char *source
)
1664 static bool path_exists
= true;
1665 int len
, shader_size
= 0;
1672 read_path
= getenv("MESA_SHADER_READ_PATH");
1674 path_exists
= false;
1678 char *name
= construct_name(stage
, source
, read_path
);
1679 f
= fopen(name
, "r");
1684 /* allocate enough room for the entire shader */
1685 fseek(f
, 0, SEEK_END
);
1686 shader_size
= ftell(f
);
1688 assert(shader_size
);
1690 /* add one for terminating zero */
1693 buffer
= malloc(shader_size
);
1696 len
= fread(buffer
, 1, shader_size
, f
);
1703 #endif /* HAVE_SHA1 */
1706 * Called via glShaderSource() and glShaderSourceARB() API functions.
1707 * Basically, concatenate the source code strings into one long string
1708 * and pass it to _mesa_shader_source().
1711 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1712 const GLchar
* const * string
, const GLint
* length
)
1714 GET_CURRENT_CONTEXT(ctx
);
1716 GLsizei i
, totalLength
;
1718 struct gl_shader
*sh
;
1720 #if defined(HAVE_SHA1)
1721 GLcharARB
*replacement
;
1722 #endif /* HAVE_SHA1 */
1724 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1728 if (string
== NULL
) {
1729 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1734 * This array holds offsets of where the appropriate string ends, thus the
1735 * last element will be set to the total length of the source code.
1737 offsets
= malloc(count
* sizeof(GLint
));
1738 if (offsets
== NULL
) {
1739 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1743 for (i
= 0; i
< count
; i
++) {
1744 if (string
[i
] == NULL
) {
1745 free((GLvoid
*) offsets
);
1746 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1747 "glShaderSourceARB(null string)");
1750 if (length
== NULL
|| length
[i
] < 0)
1751 offsets
[i
] = strlen(string
[i
]);
1753 offsets
[i
] = length
[i
];
1754 /* accumulate string lengths */
1756 offsets
[i
] += offsets
[i
- 1];
1759 /* Total length of source string is sum off all strings plus two.
1760 * One extra byte for terminating zero, another extra byte to silence
1761 * valgrind warnings in the parser/grammer code.
1763 totalLength
= offsets
[count
- 1] + 2;
1764 source
= malloc(totalLength
* sizeof(GLcharARB
));
1765 if (source
== NULL
) {
1766 free((GLvoid
*) offsets
);
1767 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1771 for (i
= 0; i
< count
; i
++) {
1772 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1773 memcpy(source
+ start
, string
[i
],
1774 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1776 source
[totalLength
- 1] = '\0';
1777 source
[totalLength
- 2] = '\0';
1779 #if defined(HAVE_SHA1)
1780 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1781 * if corresponding entry found from MESA_SHADER_READ_PATH.
1783 dump_shader(sh
->Stage
, source
);
1785 replacement
= read_shader(sh
->Stage
, source
);
1788 source
= replacement
;
1790 #endif /* HAVE_SHA1 */
1792 shader_source(sh
, source
);
1799 _mesa_UseProgram(GLuint program
)
1801 GET_CURRENT_CONTEXT(ctx
);
1802 struct gl_shader_program
*shProg
;
1804 if (MESA_VERBOSE
& VERBOSE_API
)
1805 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1807 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1808 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1809 "glUseProgram(transform feedback active)");
1814 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1818 if (!shProg
->LinkStatus
) {
1819 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1820 "glUseProgram(program %u not linked)", program
);
1825 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1826 print_shader_info(shProg
);
1833 /* The ARB_separate_shader_object spec says:
1835 * "The executable code for an individual shader stage is taken from
1836 * the current program for that stage. If there is a current program
1837 * object established by UseProgram, that program is considered current
1838 * for all stages. Otherwise, if there is a bound program pipeline
1839 * object (section 2.14.PPO), the program bound to the appropriate
1840 * stage of the pipeline object is considered current."
1843 /* Attach shader state to the binding point */
1844 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1845 /* Update the program */
1846 _mesa_use_program(ctx
, shProg
);
1848 /* Must be done first: detach the progam */
1849 _mesa_use_program(ctx
, shProg
);
1850 /* Unattach shader_state binding point */
1851 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1852 /* If a pipeline was bound, rebind it */
1853 if (ctx
->Pipeline
.Current
) {
1854 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1861 _mesa_ValidateProgram(GLuint program
)
1863 GET_CURRENT_CONTEXT(ctx
);
1864 validate_program(ctx
, program
);
1869 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1872 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1873 GLint
* range
, GLint
* precision
)
1875 const struct gl_program_constants
*limits
;
1876 const struct gl_precision
*p
;
1877 GET_CURRENT_CONTEXT(ctx
);
1879 switch (shadertype
) {
1880 case GL_VERTEX_SHADER
:
1881 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1883 case GL_FRAGMENT_SHADER
:
1884 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1887 _mesa_error(ctx
, GL_INVALID_ENUM
,
1888 "glGetShaderPrecisionFormat(shadertype)");
1892 switch (precisiontype
) {
1894 p
= &limits
->LowFloat
;
1896 case GL_MEDIUM_FLOAT
:
1897 p
= &limits
->MediumFloat
;
1900 p
= &limits
->HighFloat
;
1903 p
= &limits
->LowInt
;
1906 p
= &limits
->MediumInt
;
1909 p
= &limits
->HighInt
;
1912 _mesa_error(ctx
, GL_INVALID_ENUM
,
1913 "glGetShaderPrecisionFormat(precisiontype)");
1917 range
[0] = p
->RangeMin
;
1918 range
[1] = p
->RangeMax
;
1919 precision
[0] = p
->Precision
;
1924 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1927 _mesa_ReleaseShaderCompiler(void)
1929 _mesa_destroy_shader_compiler_caches();
1934 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1937 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1938 const void* binary
, GLint length
)
1940 GET_CURRENT_CONTEXT(ctx
);
1942 (void) binaryformat
;
1945 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1946 * page 88 of the OpenGL 4.5 specs state:
1948 * "An INVALID_VALUE error is generated if count or length is negative.
1949 * An INVALID_ENUM error is generated if binaryformat is not a supported
1950 * format returned in SHADER_BINARY_FORMATS."
1952 if (n
< 0 || length
< 0) {
1953 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1957 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1962 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1963 GLenum
*binaryFormat
, GLvoid
*binary
)
1965 struct gl_shader_program
*shProg
;
1966 GLsizei length_dummy
;
1967 GET_CURRENT_CONTEXT(ctx
);
1970 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1974 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1978 /* The ARB_get_program_binary spec says:
1980 * "If <length> is NULL, then no length is returned."
1982 * Ensure that length always points to valid storage to avoid multiple NULL
1983 * pointer checks below.
1986 length
= &length_dummy
;
1989 /* The ARB_get_program_binary spec says:
1991 * "When a program object's LINK_STATUS is FALSE, its program binary
1992 * length is zero, and a call to GetProgramBinary will generate an
1993 * INVALID_OPERATION error.
1995 if (!shProg
->LinkStatus
) {
1996 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1997 "glGetProgramBinary(program %u not linked)",
2004 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2005 "glGetProgramBinary(driver supports zero binary formats)");
2007 (void) binaryFormat
;
2012 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
2013 const GLvoid
*binary
, GLsizei length
)
2015 struct gl_shader_program
*shProg
;
2016 GET_CURRENT_CONTEXT(ctx
);
2018 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
2022 (void) binaryFormat
;
2025 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2027 * "If a negative number is provided where an argument of type sizei or
2028 * sizeiptr is specified, an INVALID_VALUE error is generated."
2031 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
2035 /* The ARB_get_program_binary spec says:
2037 * "<binaryFormat> and <binary> must be those returned by a previous
2038 * call to GetProgramBinary, and <length> must be the length of the
2039 * program binary as returned by GetProgramBinary or GetProgramiv with
2040 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2041 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2044 * Since any value of binaryFormat passed "is not one of those specified as
2045 * allowable for [this] command, an INVALID_ENUM error is generated."
2047 shProg
->LinkStatus
= GL_FALSE
;
2048 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
2053 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
2055 struct gl_shader_program
*shProg
;
2056 GET_CURRENT_CONTEXT(ctx
);
2058 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
2059 "glProgramParameteri");
2064 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
2065 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2066 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2067 * even be in the dispatch table, so we shouldn't need to expclicitly
2070 * On desktop, we ignore the 3.0+ requirement because it is silly.
2073 /* The ARB_get_program_binary extension spec says:
2075 * "An INVALID_VALUE error is generated if the <value> argument to
2076 * ProgramParameteri is not TRUE or FALSE."
2078 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2082 /* No need to notify the driver. Any changes will actually take effect
2083 * the next time the shader is linked.
2085 * The ARB_get_program_binary extension spec says:
2087 * "To indicate that a program binary is likely to be retrieved,
2088 * ProgramParameteri should be called with <pname>
2089 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2090 * will not be in effect until the next time LinkProgram or
2091 * ProgramBinary has been called successfully."
2093 * The resloution of issue 9 in the extension spec also says:
2095 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2096 * to indicate to the GL implementation that this program will
2097 * likely be saved with GetProgramBinary at some point. This will
2098 * give the GL implementation the opportunity to track any state
2099 * changes made to the program before being saved such that when it
2100 * is loaded again a recompile can be avoided."
2102 shProg
->BinaryRetreivableHint
= value
;
2105 case GL_PROGRAM_SEPARABLE
:
2106 /* Spec imply that the behavior is the same as ARB_get_program_binary
2107 * Chapter 7.3 Program Objects
2109 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2112 shProg
->SeparateShader
= value
;
2116 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2117 _mesa_enum_to_string(pname
));
2122 _mesa_error(ctx
, GL_INVALID_VALUE
,
2123 "glProgramParameteri(pname=%s, value=%d): "
2124 "value must be 0 or 1.",
2125 _mesa_enum_to_string(pname
),
2131 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2132 struct gl_shader_program
*shProg
,
2133 struct gl_pipeline_object
*shTarget
)
2135 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2136 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2141 * Copy program-specific data generated by linking from the gl_shader_program
2142 * object to the gl_program object referred to by the gl_linked_shader.
2144 * This function expects _mesa_reference_program() to have been previously
2145 * called setting the gl_linked_shaders program reference.
2148 _mesa_copy_linked_program_data(const struct gl_shader_program
*src
,
2149 struct gl_linked_shader
*dst_sh
)
2151 assert(dst_sh
->Program
);
2153 struct gl_program
*dst
= dst_sh
->Program
;
2155 dst
->info
.num_abos
= dst_sh
->NumAtomicBuffers
;
2156 dst
->info
.num_images
= dst_sh
->NumImages
;
2158 switch (dst_sh
->Stage
) {
2159 case MESA_SHADER_VERTEX
:
2160 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2161 dst
->CullDistanceArraySize
= src
->Vert
.CullDistanceArraySize
;
2163 case MESA_SHADER_TESS_CTRL
: {
2164 dst
->info
.tcs
.vertices_out
= dst_sh
->info
.TessCtrl
.VerticesOut
;
2167 case MESA_SHADER_TESS_EVAL
: {
2168 dst
->info
.tes
.primitive_mode
= dst_sh
->info
.TessEval
.PrimitiveMode
;
2169 dst
->info
.tes
.spacing
= dst_sh
->info
.TessEval
.Spacing
;
2170 dst
->info
.tes
.vertex_order
= dst_sh
->info
.TessEval
.VertexOrder
;
2171 dst
->info
.tes
.point_mode
= dst_sh
->info
.TessEval
.PointMode
;
2172 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2173 dst
->CullDistanceArraySize
= src
->TessEval
.CullDistanceArraySize
;
2176 case MESA_SHADER_GEOMETRY
: {
2177 dst
->info
.gs
.vertices_in
= src
->Geom
.VerticesIn
;
2178 dst
->info
.gs
.vertices_out
= dst_sh
->info
.Geom
.VerticesOut
;
2179 dst
->info
.gs
.invocations
= dst_sh
->info
.Geom
.Invocations
;
2180 dst
->info
.gs
.input_primitive
= dst_sh
->info
.Geom
.InputType
;
2181 dst
->info
.gs
.output_primitive
= dst_sh
->info
.Geom
.OutputType
;
2182 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2183 dst
->CullDistanceArraySize
= src
->Geom
.CullDistanceArraySize
;
2184 dst
->info
.gs
.uses_end_primitive
= src
->Geom
.UsesEndPrimitive
;
2185 dst
->info
.gs
.uses_streams
= src
->Geom
.UsesStreams
;
2188 case MESA_SHADER_FRAGMENT
: {
2189 dst
->info
.fs
.depth_layout
= src
->FragDepthLayout
;
2190 dst
->info
.fs
.early_fragment_tests
= dst_sh
->info
.EarlyFragmentTests
;
2193 case MESA_SHADER_COMPUTE
: {
2194 for (int i
= 0; i
< 3; i
++)
2195 dst
->info
.cs
.local_size
[i
] = src
->Comp
.LocalSize
[i
];
2196 dst
->info
.cs
.shared_size
= src
->Comp
.SharedSize
;
2205 * ARB_separate_shader_objects: Compile & Link Program
2208 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2209 const GLchar
* const *strings
)
2211 GET_CURRENT_CONTEXT(ctx
);
2213 const GLuint shader
= create_shader(ctx
, type
);
2217 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2218 * GL_INVALID_VALUE should be generated if count < 0
2221 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2226 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2228 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2229 _mesa_compile_shader(ctx
, sh
);
2231 program
= create_shader_program(ctx
);
2233 struct gl_shader_program
*shProg
;
2234 GLint compiled
= GL_FALSE
;
2236 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2238 shProg
->SeparateShader
= GL_TRUE
;
2240 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2242 attach_shader(ctx
, program
, shader
);
2243 _mesa_link_program(ctx
, shProg
);
2244 detach_shader(ctx
, program
, shader
);
2248 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2249 append
-error
-to
-info
-log
;
2250 shProg
->LinkStatus
= GL_FALSE
;
2255 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2258 delete_shader(ctx
, shader
);
2266 * For GL_ARB_tessellation_shader
2268 extern void GLAPIENTRY
2269 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2271 GET_CURRENT_CONTEXT(ctx
);
2273 if (!_mesa_has_tessellation(ctx
)) {
2274 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2278 if (pname
!= GL_PATCH_VERTICES
) {
2279 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2283 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2284 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2288 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2292 extern void GLAPIENTRY
2293 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2295 GET_CURRENT_CONTEXT(ctx
);
2297 if (!_mesa_has_tessellation(ctx
)) {
2298 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2303 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2304 FLUSH_VERTICES(ctx
, 0);
2305 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2306 4 * sizeof(GLfloat
));
2307 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2309 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2310 FLUSH_VERTICES(ctx
, 0);
2311 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2312 2 * sizeof(GLfloat
));
2313 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2316 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2322 * ARB_shader_subroutine
2325 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2328 GET_CURRENT_CONTEXT(ctx
);
2329 const char *api_name
= "glGetSubroutineUniformLocation";
2330 struct gl_shader_program
*shProg
;
2331 GLenum resource_type
;
2332 gl_shader_stage stage
;
2334 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2335 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2339 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2340 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2344 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2348 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2349 if (!shProg
->_LinkedShaders
[stage
]) {
2350 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2354 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2355 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2359 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2362 GET_CURRENT_CONTEXT(ctx
);
2363 const char *api_name
= "glGetSubroutineIndex";
2364 struct gl_shader_program
*shProg
;
2365 struct gl_program_resource
*res
;
2366 GLenum resource_type
;
2367 gl_shader_stage stage
;
2369 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2370 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2374 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2375 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2379 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2383 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2384 if (!shProg
->_LinkedShaders
[stage
]) {
2385 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2389 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2390 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2395 return _mesa_program_resource_index(shProg
, res
);
2400 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2401 GLuint index
, GLenum pname
, GLint
*values
)
2403 GET_CURRENT_CONTEXT(ctx
);
2404 const char *api_name
= "glGetActiveSubroutineUniformiv";
2405 struct gl_shader_program
*shProg
;
2406 struct gl_linked_shader
*sh
;
2407 gl_shader_stage stage
;
2408 struct gl_program_resource
*res
;
2409 const struct gl_uniform_storage
*uni
;
2410 GLenum resource_type
;
2413 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2414 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2418 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2419 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2423 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2427 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2428 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2430 sh
= shProg
->_LinkedShaders
[stage
];
2432 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2436 if (index
>= sh
->NumSubroutineUniforms
) {
2437 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2442 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2443 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2446 values
[0] = uni
->num_compatible_subroutines
;
2450 case GL_COMPATIBLE_SUBROUTINES
: {
2451 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2455 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2456 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2457 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2458 if (fn
->types
[j
] == uni
->type
) {
2459 values
[count
++] = i
;
2467 case GL_UNIFORM_SIZE
:
2468 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2471 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2474 case GL_UNIFORM_NAME_LENGTH
:
2475 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2477 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2478 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2482 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2489 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2490 GLuint index
, GLsizei bufsize
,
2491 GLsizei
*length
, GLchar
*name
)
2493 GET_CURRENT_CONTEXT(ctx
);
2494 const char *api_name
= "glGetActiveSubroutineUniformName";
2495 struct gl_shader_program
*shProg
;
2496 GLenum resource_type
;
2497 gl_shader_stage stage
;
2499 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2500 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2504 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2505 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2509 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2513 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2514 if (!shProg
->_LinkedShaders
[stage
]) {
2515 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2519 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2520 /* get program resource name */
2521 _mesa_get_program_resource_name(shProg
, resource_type
,
2523 length
, name
, api_name
);
2528 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2529 GLuint index
, GLsizei bufsize
,
2530 GLsizei
*length
, GLchar
*name
)
2532 GET_CURRENT_CONTEXT(ctx
);
2533 const char *api_name
= "glGetActiveSubroutineName";
2534 struct gl_shader_program
*shProg
;
2535 GLenum resource_type
;
2536 gl_shader_stage stage
;
2538 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2539 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2543 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2544 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2548 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2552 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2553 if (!shProg
->_LinkedShaders
[stage
]) {
2554 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2557 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2558 _mesa_get_program_resource_name(shProg
, resource_type
,
2560 length
, name
, api_name
);
2564 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2565 const GLuint
*indices
)
2567 GET_CURRENT_CONTEXT(ctx
);
2568 const char *api_name
= "glUniformSubroutinesuiv";
2569 struct gl_shader_program
*shProg
;
2570 struct gl_linked_shader
*sh
;
2571 gl_shader_stage stage
;
2574 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2575 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2579 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2580 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2584 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2585 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2587 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2591 sh
= shProg
->_LinkedShaders
[stage
];
2593 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2597 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2598 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2604 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2610 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2613 for (j
= i
; j
< i
+ uni_count
; j
++) {
2614 struct gl_subroutine_function
*subfn
= NULL
;
2615 if (indices
[j
] > sh
->MaxSubroutineFunctionIndex
) {
2616 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2620 for (f
= 0; f
< sh
->NumSubroutineFunctions
; f
++) {
2621 if (sh
->SubroutineFunctions
[f
].index
== indices
[j
])
2622 subfn
= &sh
->SubroutineFunctions
[f
];
2629 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2630 if (subfn
->types
[k
] == uni
->type
)
2633 if (k
== subfn
->num_compat_types
) {
2634 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2638 ctx
->SubroutineIndex
[sh
->Stage
].IndexPtr
[j
] = indices
[j
];
2643 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2648 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2651 GET_CURRENT_CONTEXT(ctx
);
2652 const char *api_name
= "glGetUniformSubroutineuiv";
2653 struct gl_shader_program
*shProg
;
2654 struct gl_linked_shader
*sh
;
2655 gl_shader_stage stage
;
2657 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2658 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2662 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2663 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2667 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2668 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2670 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2674 sh
= shProg
->_LinkedShaders
[stage
];
2676 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2680 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2681 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2685 *params
= ctx
->SubroutineIndex
[sh
->Stage
].IndexPtr
[location
];
2690 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2691 GLenum pname
, GLint
*values
)
2693 GET_CURRENT_CONTEXT(ctx
);
2694 const char *api_name
= "glGetProgramStageiv";
2695 struct gl_shader_program
*shProg
;
2696 struct gl_linked_shader
*sh
;
2697 gl_shader_stage stage
;
2699 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2700 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2704 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2705 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2709 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2713 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2714 sh
= shProg
->_LinkedShaders
[stage
];
2716 /* ARB_shader_subroutine doesn't ask the program to be linked, or list any
2717 * INVALID_OPERATION in the case of not be linked.
2719 * And for some pnames, like GL_ACTIVE_SUBROUTINE_UNIFORMS, you can ask the
2720 * same info using other specs (ARB_program_interface_query), without the
2721 * need of the program to be linked, being the value for that case 0.
2723 * But at the same time, some other methods require the program to be
2724 * linked for pname related to locations, so it would be inconsistent to
2725 * not do the same here. So we are:
2726 * * Return GL_INVALID_OPERATION if not linked only for locations.
2727 * * Setting a default value of 0, to be returned if not linked.
2731 if (pname
== GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
) {
2732 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2738 case GL_ACTIVE_SUBROUTINES
:
2739 values
[0] = sh
->NumSubroutineFunctions
;
2741 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2742 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2744 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2745 values
[0] = sh
->NumSubroutineUniforms
;
2747 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2751 GLenum resource_type
;
2752 struct gl_program_resource
*res
;
2754 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2755 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2756 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2758 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2763 values
[0] = max_len
;
2766 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2770 GLenum resource_type
;
2771 struct gl_program_resource
*res
;
2773 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2774 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2775 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2777 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2778 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2784 values
[0] = max_len
;
2788 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2795 find_compat_subroutine(struct gl_linked_shader
*sh
,
2796 const struct glsl_type
*type
)
2800 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2801 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2802 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2803 if (fn
->types
[j
] == type
)
2811 _mesa_shader_write_subroutine_index(struct gl_context
*ctx
,
2812 struct gl_linked_shader
*sh
)
2816 if (sh
->NumSubroutineUniformRemapTable
== 0)
2821 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2830 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2831 for (j
= 0; j
< uni_count
; j
++) {
2832 val
= ctx
->SubroutineIndex
[sh
->Stage
].IndexPtr
[i
+ j
];
2833 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2836 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2838 } while(i
< sh
->NumSubroutineUniformRemapTable
);
2842 _mesa_shader_write_subroutine_indices(struct gl_context
*ctx
,
2843 gl_shader_stage stage
)
2845 if (ctx
->_Shader
->CurrentProgram
[stage
] &&
2846 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
])
2847 _mesa_shader_write_subroutine_index(ctx
,
2848 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
]);
2852 _mesa_shader_init_subroutine_defaults(struct gl_context
*ctx
,
2853 struct gl_linked_shader
*sh
)
2856 struct gl_subroutine_index_binding
*binding
= &ctx
->SubroutineIndex
[sh
->Stage
];
2857 if (binding
->NumIndex
!= sh
->NumSubroutineUniformRemapTable
) {
2858 binding
->IndexPtr
= realloc(binding
->IndexPtr
,
2859 sh
->NumSubroutineUniformRemapTable
* (sizeof(GLuint
)));
2860 binding
->NumIndex
= sh
->NumSubroutineUniformRemapTable
;
2863 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2864 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2869 binding
->IndexPtr
[i
] = find_compat_subroutine(sh
, uni
->type
);
2874 _mesa_shader_program_init_subroutine_defaults(struct gl_context
*ctx
,
2875 struct gl_shader_program
*shProg
)
2882 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2883 if (!shProg
->_LinkedShaders
[i
])
2886 _mesa_shader_init_subroutine_defaults(ctx
, shProg
->_LinkedShaders
[i
]);