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 "glsl/glsl_parser_extras.h"
54 #include "glsl/ir_uniform.h"
55 #include "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"
65 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
68 _mesa_get_shader_flags(void)
70 GLbitfield flags
= 0x0;
71 const char *env
= getenv("MESA_GLSL");
74 if (strstr(env
, "dump_on_error"))
75 flags
|= GLSL_DUMP_ON_ERROR
;
76 else if (strstr(env
, "dump"))
78 if (strstr(env
, "log"))
80 if (strstr(env
, "nopvert"))
81 flags
|= GLSL_NOP_VERT
;
82 if (strstr(env
, "nopfrag"))
83 flags
|= GLSL_NOP_FRAG
;
84 if (strstr(env
, "nopt"))
86 else if (strstr(env
, "opt"))
88 if (strstr(env
, "uniform"))
89 flags
|= GLSL_UNIFORMS
;
90 if (strstr(env
, "useprog"))
91 flags
|= GLSL_USE_PROG
;
92 if (strstr(env
, "errors"))
93 flags
|= GLSL_REPORT_ERRORS
;
101 * Initialize context's shader state.
104 _mesa_init_shader_state(struct gl_context
*ctx
)
106 /* Device drivers may override these to control what kind of instructions
107 * are generated by the GLSL compiler.
109 struct gl_shader_compiler_options options
;
113 memset(&options
, 0, sizeof(options
));
114 options
.MaxUnrollIterations
= 32;
115 options
.MaxIfDepth
= UINT_MAX
;
117 for (sh
= 0; sh
< MESA_SHADER_STAGES
; ++sh
)
118 memcpy(&ctx
->Const
.ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
120 ctx
->Shader
.Flags
= _mesa_get_shader_flags();
122 if (ctx
->Shader
.Flags
!= 0)
123 ctx
->Const
.GenerateTemporaryNames
= true;
125 /* Extended for ARB_separate_shader_objects */
126 ctx
->Shader
.RefCount
= 1;
127 mtx_init(&ctx
->Shader
.Mutex
, mtx_plain
);
129 ctx
->TessCtrlProgram
.patch_vertices
= 3;
130 for (i
= 0; i
< 4; ++i
)
131 ctx
->TessCtrlProgram
.patch_default_outer_level
[i
] = 1.0;
132 for (i
= 0; i
< 2; ++i
)
133 ctx
->TessCtrlProgram
.patch_default_inner_level
[i
] = 1.0;
138 * Free the per-context shader-related state.
141 _mesa_free_shader_state(struct gl_context
*ctx
)
144 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
145 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[i
],
148 _mesa_reference_shader_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
,
150 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
152 /* Extended for ARB_separate_shader_objects */
153 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
155 assert(ctx
->Shader
.RefCount
== 1);
156 mtx_destroy(&ctx
->Shader
.Mutex
);
161 * Copy string from <src> to <dst>, up to maxLength characters, returning
162 * length of <dst> in <length>.
163 * \param src the strings source
164 * \param maxLength max chars to copy
165 * \param length returns number of chars copied
166 * \param dst the string destination
169 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
170 GLsizei
*length
, const GLchar
*src
)
173 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
184 * Confirm that the a shader type is valid and supported by the implementation
186 * \param ctx Current GL context
187 * \param type Shader target
191 _mesa_validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
193 /* Note: when building built-in GLSL functions, this function may be
194 * invoked with ctx == NULL. In that case, we can only validate that it's
195 * a shader target we recognize, not that it's supported in the current
196 * context. But that's fine--we don't need any further validation than
197 * that when building built-in GLSL functions.
201 case GL_FRAGMENT_SHADER
:
202 return ctx
== NULL
|| ctx
->Extensions
.ARB_fragment_shader
;
203 case GL_VERTEX_SHADER
:
204 return ctx
== NULL
|| ctx
->Extensions
.ARB_vertex_shader
;
205 case GL_GEOMETRY_SHADER_ARB
:
206 return ctx
== NULL
|| _mesa_has_geometry_shaders(ctx
);
207 case GL_TESS_CONTROL_SHADER
:
208 case GL_TESS_EVALUATION_SHADER
:
209 return ctx
== NULL
|| _mesa_has_tessellation(ctx
);
210 case GL_COMPUTE_SHADER
:
211 return ctx
== NULL
|| _mesa_has_compute_shaders(ctx
);
219 is_program(struct gl_context
*ctx
, GLuint name
)
221 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
222 return shProg
? GL_TRUE
: GL_FALSE
;
227 is_shader(struct gl_context
*ctx
, GLuint name
)
229 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
230 return shader
? GL_TRUE
: GL_FALSE
;
235 * Attach shader to a shader program.
238 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
240 struct gl_shader_program
*shProg
;
241 struct gl_shader
*sh
;
244 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
246 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
250 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
255 n
= shProg
->NumShaders
;
256 for (i
= 0; i
< n
; i
++) {
257 if (shProg
->Shaders
[i
] == sh
) {
258 /* The shader is already attched to this program. The
259 * GL_ARB_shader_objects spec says:
261 * "The error INVALID_OPERATION is generated by AttachObjectARB
262 * if <obj> is already attached to <containerObj>."
264 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
266 } else if (same_type_disallowed
&&
267 shProg
->Shaders
[i
]->Type
== sh
->Type
) {
268 /* Shader with the same type is already attached to this program,
269 * OpenGL ES 2.0 and 3.0 specs say:
271 * "Multiple shader objects of the same type may not be attached
272 * to a single program object. [...] The error INVALID_OPERATION
273 * is generated if [...] another shader object of the same type
274 * as shader is already attached to program."
276 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
282 shProg
->Shaders
= realloc(shProg
->Shaders
,
283 (n
+ 1) * sizeof(struct gl_shader
*));
284 if (!shProg
->Shaders
) {
285 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
290 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
291 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
292 shProg
->NumShaders
++;
297 create_shader(struct gl_context
*ctx
, GLenum type
)
299 struct gl_shader
*sh
;
302 if (!_mesa_validate_shader_target(ctx
, type
)) {
303 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(%s)",
304 _mesa_enum_to_string(type
));
308 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
309 sh
= ctx
->Driver
.NewShader(ctx
, name
, type
);
310 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, sh
);
317 create_shader_program(struct gl_context
*ctx
)
320 struct gl_shader_program
*shProg
;
322 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
324 shProg
= _mesa_new_shader_program(name
);
326 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, shProg
);
328 assert(shProg
->RefCount
== 1);
335 * Delete a shader program. Actually, just decrement the program's
336 * reference count and mark it as DeletePending.
337 * Used to implement glDeleteProgram() and glDeleteObjectARB().
340 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
343 * NOTE: deleting shaders/programs works a bit differently than
344 * texture objects (and buffer objects, etc). Shader/program
345 * handles/IDs exist in the hash table until the object is really
346 * deleted (refcount==0). With texture objects, the handle/ID is
347 * removed from the hash table in glDeleteTextures() while the tex
348 * object itself might linger until its refcount goes to zero.
350 struct gl_shader_program
*shProg
;
352 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
356 if (!shProg
->DeletePending
) {
357 shProg
->DeletePending
= GL_TRUE
;
359 /* effectively, decr shProg's refcount */
360 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
366 delete_shader(struct gl_context
*ctx
, GLuint shader
)
368 struct gl_shader
*sh
;
370 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
374 if (!sh
->DeletePending
) {
375 sh
->DeletePending
= GL_TRUE
;
377 /* effectively, decr sh's refcount */
378 _mesa_reference_shader(ctx
, &sh
, NULL
);
384 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
386 struct gl_shader_program
*shProg
;
390 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
394 n
= shProg
->NumShaders
;
396 for (i
= 0; i
< n
; i
++) {
397 if (shProg
->Shaders
[i
]->Name
== shader
) {
399 struct gl_shader
**newList
;
402 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
404 /* alloc new, smaller array */
405 newList
= malloc((n
- 1) * sizeof(struct gl_shader
*));
407 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
410 /* Copy old list entries to new list, skipping removed entry at [i] */
411 for (j
= 0; j
< i
; j
++) {
412 newList
[j
] = shProg
->Shaders
[j
];
415 newList
[j
++] = shProg
->Shaders
[i
];
418 /* Free old list and install new one */
419 free(shProg
->Shaders
);
420 shProg
->Shaders
= newList
;
421 shProg
->NumShaders
= n
- 1;
424 /* sanity check - make sure the new list's entries are sensible */
425 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
426 assert(shProg
->Shaders
[j
]->Type
== GL_VERTEX_SHADER
||
427 shProg
->Shaders
[j
]->Type
== GL_TESS_CONTROL_SHADER
||
428 shProg
->Shaders
[j
]->Type
== GL_TESS_EVALUATION_SHADER
||
429 shProg
->Shaders
[j
]->Type
== GL_GEOMETRY_SHADER
||
430 shProg
->Shaders
[j
]->Type
== GL_FRAGMENT_SHADER
);
431 assert(shProg
->Shaders
[j
]->RefCount
> 0);
442 if (is_shader(ctx
, shader
) || is_program(ctx
, shader
))
443 err
= GL_INVALID_OPERATION
;
445 err
= GL_INVALID_VALUE
;
446 _mesa_error(ctx
, err
, "glDetachShader(shader)");
453 * Return list of shaders attached to shader program.
456 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
457 GLsizei
*count
, GLuint
*obj
)
459 struct gl_shader_program
*shProg
;
462 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetAttachedShaders(maxCount < 0)");
467 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
471 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
472 obj
[i
] = shProg
->Shaders
[i
]->Name
;
481 * glGetHandleARB() - return ID/name of currently bound shader program.
484 get_handle(struct gl_context
*ctx
, GLenum pname
)
486 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
487 if (ctx
->_Shader
->ActiveProgram
)
488 return ctx
->_Shader
->ActiveProgram
->Name
;
493 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
500 * Check if a geometry shader query is valid at this time. If not, report an
501 * error and return false.
503 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
505 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
506 * are queried for a program which has not been linked successfully, or
507 * which does not contain objects to form a geometry shader, then an
508 * INVALID_OPERATION error is generated."
511 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
513 if (shProg
->LinkStatus
&&
514 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
518 _mesa_error(ctx
, GL_INVALID_OPERATION
,
519 "glGetProgramv(linked geometry shader required)");
525 * Check if a tessellation control shader query is valid at this time.
526 * If not, report an error and return false.
528 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
530 * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
531 * not been linked successfully, or which does not contain objects to
532 * form a tessellation control shader, then an INVALID_OPERATION error is
536 check_tcs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
538 if (shProg
->LinkStatus
&&
539 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
] != NULL
) {
543 _mesa_error(ctx
, GL_INVALID_OPERATION
,
544 "glGetProgramv(linked tessellation control shader required)");
550 * Check if a tessellation evaluation shader query is valid at this time.
551 * If not, report an error and return false.
553 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
555 * "If any of the pname values in this paragraph are queried for a program
556 * which has not been linked successfully, or which does not contain
557 * objects to form a tessellation evaluation shader, then an
558 * INVALID_OPERATION error is generated."
562 check_tes_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
564 if (shProg
->LinkStatus
&&
565 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
] != NULL
) {
569 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramv(linked tessellation "
570 "evaluation shader required)");
576 * glGetProgramiv() - get shader program state.
577 * Note that this is for GLSL shader programs, not ARB vertex/fragment
578 * programs (see glGetProgramivARB).
581 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
,
584 struct gl_shader_program
*shProg
585 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramiv(program)");
587 /* Is transform feedback available in this context?
590 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
591 || ctx
->API
== API_OPENGL_CORE
592 || _mesa_is_gles3(ctx
);
594 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
595 * and GL 3.2) are available in this context
597 const bool has_core_gs
= _mesa_has_geometry_shaders(ctx
);
598 const bool has_tess
= _mesa_has_tessellation(ctx
);
600 /* Are uniform buffer objects available in this context?
603 (ctx
->API
== API_OPENGL_COMPAT
&&
604 ctx
->Extensions
.ARB_uniform_buffer_object
)
605 || ctx
->API
== API_OPENGL_CORE
606 || _mesa_is_gles3(ctx
);
613 case GL_DELETE_STATUS
:
614 *params
= shProg
->DeletePending
;
617 *params
= shProg
->LinkStatus
;
619 case GL_VALIDATE_STATUS
:
620 *params
= shProg
->Validated
;
622 case GL_INFO_LOG_LENGTH
:
623 *params
= shProg
->InfoLog
? strlen(shProg
->InfoLog
) + 1 : 0;
625 case GL_ATTACHED_SHADERS
:
626 *params
= shProg
->NumShaders
;
628 case GL_ACTIVE_ATTRIBUTES
:
629 *params
= _mesa_count_active_attribs(shProg
);
631 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
632 *params
= _mesa_longest_attribute_name_length(shProg
);
634 case GL_ACTIVE_UNIFORMS
: {
636 const unsigned num_uniforms
=
637 shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
638 for (*params
= 0, i
= 0; i
< num_uniforms
; i
++) {
639 if (!shProg
->UniformStorage
[i
].is_shader_storage
)
644 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
647 const unsigned num_uniforms
=
648 shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
650 for (i
= 0; i
< num_uniforms
; i
++) {
651 if (shProg
->UniformStorage
[i
].is_shader_storage
)
654 /* Add one for the terminating NUL character for a non-array, and
655 * 4 for the "[0]" and the NUL for an array.
657 const GLint len
= strlen(shProg
->UniformStorage
[i
].name
) + 1 +
658 ((shProg
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
667 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
670 *params
= shProg
->TransformFeedback
.NumVarying
;
672 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
678 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
679 /* Add one for the terminating NUL character.
682 strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
691 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
694 *params
= shProg
->TransformFeedback
.BufferMode
;
696 case GL_GEOMETRY_VERTICES_OUT
:
699 if (check_gs_query(ctx
, shProg
))
700 *params
= shProg
->Geom
.VerticesOut
;
702 case GL_GEOMETRY_SHADER_INVOCATIONS
:
703 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
705 if (check_gs_query(ctx
, shProg
))
706 *params
= shProg
->Geom
.Invocations
;
708 case GL_GEOMETRY_INPUT_TYPE
:
711 if (check_gs_query(ctx
, shProg
))
712 *params
= shProg
->Geom
.InputType
;
714 case GL_GEOMETRY_OUTPUT_TYPE
:
717 if (check_gs_query(ctx
, shProg
))
718 *params
= shProg
->Geom
.OutputType
;
720 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
727 for (i
= 0; i
< shProg
->NumUniformBlocks
; i
++) {
728 /* Add one for the terminating NUL character.
730 const GLint len
= strlen(shProg
->UniformBlocks
[i
]->Name
) + 1;
739 case GL_ACTIVE_UNIFORM_BLOCKS
:
743 *params
= shProg
->NumUniformBlocks
;
745 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
746 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
747 * only available with desktop OpenGL 3.0+ with the
748 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
750 * On desktop, we ignore the 3.0+ requirement because it is silly.
752 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
755 *params
= shProg
->BinaryRetreivableHint
;
757 case GL_PROGRAM_BINARY_LENGTH
:
760 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
761 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
764 *params
= shProg
->NumAtomicBuffers
;
766 case GL_COMPUTE_WORK_GROUP_SIZE
: {
768 if (!_mesa_has_compute_shaders(ctx
))
770 if (!shProg
->LinkStatus
) {
771 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
775 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
776 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
780 for (i
= 0; i
< 3; i
++)
781 params
[i
] = shProg
->Comp
.LocalSize
[i
];
784 case GL_PROGRAM_SEPARABLE
:
785 /* If the program has not been linked, return initial value 0. */
786 *params
= (shProg
->LinkStatus
== GL_FALSE
) ? 0 : shProg
->SeparateShader
;
789 /* ARB_tessellation_shader */
790 case GL_TESS_CONTROL_OUTPUT_VERTICES
:
793 if (check_tcs_query(ctx
, shProg
))
794 *params
= shProg
->TessCtrl
.VerticesOut
;
796 case GL_TESS_GEN_MODE
:
799 if (check_tes_query(ctx
, shProg
))
800 *params
= shProg
->TessEval
.PrimitiveMode
;
802 case GL_TESS_GEN_SPACING
:
805 if (check_tes_query(ctx
, shProg
))
806 *params
= shProg
->TessEval
.Spacing
;
808 case GL_TESS_GEN_VERTEX_ORDER
:
811 if (check_tes_query(ctx
, shProg
))
812 *params
= shProg
->TessEval
.VertexOrder
;
814 case GL_TESS_GEN_POINT_MODE
:
817 if (check_tes_query(ctx
, shProg
))
818 *params
= shProg
->TessEval
.PointMode
;
824 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
825 _mesa_enum_to_string(pname
));
830 * glGetShaderiv() - get GLSL shader state
833 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
835 struct gl_shader
*shader
=
836 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
844 *params
= shader
->Type
;
846 case GL_DELETE_STATUS
:
847 *params
= shader
->DeletePending
;
849 case GL_COMPILE_STATUS
:
850 *params
= shader
->CompileStatus
;
852 case GL_INFO_LOG_LENGTH
:
853 *params
= shader
->InfoLog
? strlen(shader
->InfoLog
) + 1 : 0;
855 case GL_SHADER_SOURCE_LENGTH
:
856 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
859 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
866 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
867 GLsizei
*length
, GLchar
*infoLog
)
869 struct gl_shader_program
*shProg
;
871 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
872 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
874 * "If a negative number is provided where an argument of type sizei or
875 * sizeiptr is specified, an INVALID_VALUE error is generated."
878 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(bufSize < 0)");
882 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
883 "glGetProgramInfoLog(program)");
888 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
893 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
894 GLsizei
*length
, GLchar
*infoLog
)
896 struct gl_shader
*sh
;
898 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
899 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
901 * "If a negative number is provided where an argument of type sizei or
902 * sizeiptr is specified, an INVALID_VALUE error is generated."
905 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(bufSize < 0)");
909 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderInfoLog(shader)");
914 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
919 * Return shader source code.
922 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
923 GLsizei
*length
, GLchar
*sourceOut
)
925 struct gl_shader
*sh
;
928 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderSource(bufSize < 0)");
932 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
936 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
941 * Set/replace shader source code. A helper function used by
942 * glShaderSource[ARB].
945 shader_source(struct gl_shader
*sh
, const GLchar
*source
)
949 /* free old shader source string and install new one */
950 free((void *)sh
->Source
);
952 sh
->CompileStatus
= GL_FALSE
;
954 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
963 compile_shader(struct gl_context
*ctx
, GLuint shaderObj
)
965 struct gl_shader
*sh
;
967 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glCompileShader");
972 /* If the user called glCompileShader without first calling
973 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
975 sh
->CompileStatus
= GL_FALSE
;
977 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
978 _mesa_log("GLSL source for %s shader %d:\n",
979 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
980 _mesa_log("%s\n", sh
->Source
);
983 /* this call will set the shader->CompileStatus field to indicate if
984 * compilation was successful.
986 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
988 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
989 _mesa_write_shader_to_file(sh
);
992 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
993 if (sh
->CompileStatus
) {
994 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
995 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
998 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
1000 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
1001 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
1002 _mesa_log("%s\n", sh
->InfoLog
);
1007 if (!sh
->CompileStatus
) {
1008 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1009 _mesa_log("GLSL source for %s shader %d:\n",
1010 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1011 _mesa_log("%s\n", sh
->Source
);
1012 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1015 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1016 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1017 sh
->Name
, sh
->InfoLog
);
1024 * Link a program's shaders.
1027 link_program(struct gl_context
*ctx
, GLuint program
)
1029 struct gl_shader_program
*shProg
;
1031 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glLinkProgram");
1035 /* From the ARB_transform_feedback2 specification:
1036 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1037 * the name of a program being used by one or more transform feedback
1038 * objects, even if the objects are not currently bound or are paused."
1040 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1041 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1042 "glLinkProgram(transform feedback is using the program)");
1046 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1048 _mesa_glsl_link_shader(ctx
, shProg
);
1050 if (shProg
->LinkStatus
== GL_FALSE
&&
1051 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1052 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1053 shProg
->Name
, shProg
->InfoLog
);
1060 printf("Link %u shaders in program %u: %s\n",
1061 shProg
->NumShaders
, shProg
->Name
,
1062 shProg
->LinkStatus
? "Success" : "Failed");
1064 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1065 printf(" shader %u, type 0x%x\n",
1066 shProg
->Shaders
[i
]->Name
,
1067 shProg
->Shaders
[i
]->Type
);
1074 * Print basic shader info (for debug).
1077 print_shader_info(const struct gl_shader_program
*shProg
)
1081 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1082 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1083 printf(" %s shader %u, checksum %u\n",
1084 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1085 shProg
->Shaders
[i
]->Name
,
1086 shProg
->Shaders
[i
]->SourceChecksum
);
1088 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1089 printf(" vert prog %u\n",
1090 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1091 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1092 printf(" frag prog %u\n",
1093 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1094 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1095 printf(" geom prog %u\n",
1096 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1097 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1098 printf(" tesc prog %u\n",
1099 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1100 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1101 printf(" tese prog %u\n",
1102 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1107 * Use the named shader program for subsequent glUniform calls
1110 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1113 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1114 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1115 "%s(program %u not linked)", caller
, shProg
->Name
);
1119 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1120 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1126 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1127 struct gl_shader_program
*shProg
,
1128 struct gl_pipeline_object
*shTarget
)
1130 struct gl_shader_program
**target
;
1132 target
= &shTarget
->CurrentProgram
[stage
];
1133 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1136 if (*target
!= shProg
) {
1137 /* Program is current, flush it */
1138 if (shTarget
== ctx
->_Shader
) {
1139 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1142 /* If the shader is also bound as the current rendering shader, unbind
1143 * it from that binding point as well. This ensures that the correct
1144 * semantics of glDeleteProgram are maintained.
1147 case MESA_SHADER_VERTEX
:
1148 case MESA_SHADER_TESS_CTRL
:
1149 case MESA_SHADER_TESS_EVAL
:
1150 case MESA_SHADER_GEOMETRY
:
1151 case MESA_SHADER_COMPUTE
:
1152 /* Empty for now. */
1154 case MESA_SHADER_FRAGMENT
:
1155 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1156 _mesa_reference_shader_program(ctx
,
1157 &ctx
->_Shader
->_CurrentFragmentProgram
,
1163 _mesa_reference_shader_program(ctx
, target
, shProg
);
1170 * Use the named shader program for subsequent rendering.
1173 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1176 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1177 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1178 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1180 _mesa_shader_program_init_subroutine_defaults(shProg
);
1181 if (ctx
->Driver
.UseProgram
)
1182 ctx
->Driver
.UseProgram(ctx
, shProg
);
1187 * Do validation of the given shader program.
1188 * \param errMsg returns error message if validation fails.
1189 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1192 validate_shader_program(const struct gl_shader_program
*shProg
,
1195 if (!shProg
->LinkStatus
) {
1199 /* From the GL spec, a program is invalid if any of these are true:
1201 any two active samplers in the current program object are of
1202 different types, but refer to the same texture image unit,
1204 any active sampler in the current program object refers to a texture
1205 image unit where fixed-function fragment processing accesses a
1206 texture target that does not match the sampler type, or
1208 the sum of the number of active samplers in the program and the
1209 number of texture image units enabled for fixed-function fragment
1210 processing exceeds the combined limit on the total number of texture
1211 image units allowed.
1215 * Check: any two active samplers in the current program object are of
1216 * different types, but refer to the same texture image unit,
1218 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1226 * Called via glValidateProgram()
1229 validate_program(struct gl_context
*ctx
, GLuint program
)
1231 struct gl_shader_program
*shProg
;
1232 char errMsg
[100] = "";
1234 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1239 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1240 if (!shProg
->Validated
) {
1241 /* update info log */
1242 if (shProg
->InfoLog
) {
1243 ralloc_free(shProg
->InfoLog
);
1245 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1252 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1254 GET_CURRENT_CONTEXT(ctx
);
1255 attach_shader(ctx
, program
, shader
);
1260 _mesa_AttachShader(GLuint program
, GLuint shader
)
1262 GET_CURRENT_CONTEXT(ctx
);
1263 attach_shader(ctx
, program
, shader
);
1268 _mesa_CompileShader(GLuint shaderObj
)
1270 GET_CURRENT_CONTEXT(ctx
);
1271 if (MESA_VERBOSE
& VERBOSE_API
)
1272 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1273 compile_shader(ctx
, shaderObj
);
1278 _mesa_CreateShader(GLenum type
)
1280 GET_CURRENT_CONTEXT(ctx
);
1281 if (MESA_VERBOSE
& VERBOSE_API
)
1282 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1283 return create_shader(ctx
, type
);
1287 GLhandleARB GLAPIENTRY
1288 _mesa_CreateShaderObjectARB(GLenum type
)
1290 GET_CURRENT_CONTEXT(ctx
);
1291 return create_shader(ctx
, type
);
1296 _mesa_CreateProgram(void)
1298 GET_CURRENT_CONTEXT(ctx
);
1299 if (MESA_VERBOSE
& VERBOSE_API
)
1300 _mesa_debug(ctx
, "glCreateProgram\n");
1301 return create_shader_program(ctx
);
1305 GLhandleARB GLAPIENTRY
1306 _mesa_CreateProgramObjectARB(void)
1308 GET_CURRENT_CONTEXT(ctx
);
1309 return create_shader_program(ctx
);
1314 _mesa_DeleteObjectARB(GLhandleARB obj
)
1316 if (MESA_VERBOSE
& VERBOSE_API
) {
1317 GET_CURRENT_CONTEXT(ctx
);
1318 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1322 GET_CURRENT_CONTEXT(ctx
);
1323 FLUSH_VERTICES(ctx
, 0);
1324 if (is_program(ctx
, obj
)) {
1325 delete_shader_program(ctx
, obj
);
1327 else if (is_shader(ctx
, obj
)) {
1328 delete_shader(ctx
, obj
);
1338 _mesa_DeleteProgram(GLuint name
)
1341 GET_CURRENT_CONTEXT(ctx
);
1342 FLUSH_VERTICES(ctx
, 0);
1343 delete_shader_program(ctx
, name
);
1349 _mesa_DeleteShader(GLuint name
)
1352 GET_CURRENT_CONTEXT(ctx
);
1353 FLUSH_VERTICES(ctx
, 0);
1354 delete_shader(ctx
, name
);
1360 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1362 GET_CURRENT_CONTEXT(ctx
);
1363 detach_shader(ctx
, program
, shader
);
1368 _mesa_DetachShader(GLuint program
, GLuint shader
)
1370 GET_CURRENT_CONTEXT(ctx
);
1371 detach_shader(ctx
, program
, shader
);
1376 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1377 GLsizei
* count
, GLhandleARB
* obj
)
1379 GET_CURRENT_CONTEXT(ctx
);
1380 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1385 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1386 GLsizei
*count
, GLuint
*obj
)
1388 GET_CURRENT_CONTEXT(ctx
);
1389 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1394 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1395 GLcharARB
* infoLog
)
1397 GET_CURRENT_CONTEXT(ctx
);
1398 if (is_program(ctx
, object
)) {
1399 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1401 else if (is_shader(ctx
, object
)) {
1402 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1405 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1411 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1413 GET_CURRENT_CONTEXT(ctx
);
1414 /* Implement in terms of GetProgramiv, GetShaderiv */
1415 if (is_program(ctx
, object
)) {
1416 if (pname
== GL_OBJECT_TYPE_ARB
) {
1417 *params
= GL_PROGRAM_OBJECT_ARB
;
1420 get_programiv(ctx
, object
, pname
, params
);
1423 else if (is_shader(ctx
, object
)) {
1424 if (pname
== GL_OBJECT_TYPE_ARB
) {
1425 *params
= GL_SHADER_OBJECT_ARB
;
1428 get_shaderiv(ctx
, object
, pname
, params
);
1432 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1438 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1441 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1442 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1443 params
[0] = (GLfloat
) iparams
[0];
1448 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1450 GET_CURRENT_CONTEXT(ctx
);
1451 get_programiv(ctx
, program
, pname
, params
);
1456 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1458 GET_CURRENT_CONTEXT(ctx
);
1459 get_shaderiv(ctx
, shader
, pname
, params
);
1464 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1465 GLsizei
*length
, GLchar
*infoLog
)
1467 GET_CURRENT_CONTEXT(ctx
);
1468 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1473 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1474 GLsizei
*length
, GLchar
*infoLog
)
1476 GET_CURRENT_CONTEXT(ctx
);
1477 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1482 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1483 GLsizei
*length
, GLchar
*sourceOut
)
1485 GET_CURRENT_CONTEXT(ctx
);
1486 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1490 GLhandleARB GLAPIENTRY
1491 _mesa_GetHandleARB(GLenum pname
)
1493 GET_CURRENT_CONTEXT(ctx
);
1494 return get_handle(ctx
, pname
);
1498 GLboolean GLAPIENTRY
1499 _mesa_IsProgram(GLuint name
)
1501 GET_CURRENT_CONTEXT(ctx
);
1502 return is_program(ctx
, name
);
1506 GLboolean GLAPIENTRY
1507 _mesa_IsShader(GLuint name
)
1509 GET_CURRENT_CONTEXT(ctx
);
1510 return is_shader(ctx
, name
);
1515 _mesa_LinkProgram(GLuint programObj
)
1517 GET_CURRENT_CONTEXT(ctx
);
1518 if (MESA_VERBOSE
& VERBOSE_API
)
1519 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1520 link_program(ctx
, programObj
);
1523 #if defined(HAVE_SHA1)
1525 * Generate a SHA-1 hash value string for given source string.
1528 generate_sha1(const char *source
, char sha_str
[64])
1530 unsigned char sha
[20];
1531 _mesa_sha1_compute(source
, strlen(source
), sha
);
1532 _mesa_sha1_format(sha_str
, sha
);
1536 * Construct a full path for shader replacement functionality using
1539 * <path>/<stage prefix>_<CHECKSUM>.glsl
1542 construct_name(const gl_shader_stage stage
, const char *source
,
1543 const char *path
, char *name
, unsigned length
)
1546 static const char *types
[] = {
1547 "VS", "TC", "TE", "GS", "FS", "CS",
1550 generate_sha1(source
, sha
);
1551 _mesa_snprintf(name
, length
, "%s/%s_%s.glsl", path
, types
[stage
],
1556 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1559 dump_shader(const gl_shader_stage stage
, const char *source
)
1561 char name
[PATH_MAX
];
1562 static bool path_exists
= true;
1569 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1571 path_exists
= false;
1575 construct_name(stage
, source
, dump_path
, name
, PATH_MAX
);
1577 f
= fopen(name
, "w");
1582 GET_CURRENT_CONTEXT(ctx
);
1583 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1589 * Read shader source code from a file.
1590 * Useful for debugging to override an app's shader.
1593 read_shader(const gl_shader_stage stage
, const char *source
)
1595 char name
[PATH_MAX
];
1597 static bool path_exists
= true;
1598 int len
, shader_size
= 0;
1605 read_path
= getenv("MESA_SHADER_READ_PATH");
1607 path_exists
= false;
1611 construct_name(stage
, source
, read_path
, name
, PATH_MAX
);
1613 f
= fopen(name
, "r");
1617 /* allocate enough room for the entire shader */
1618 fseek(f
, 0, SEEK_END
);
1619 shader_size
= ftell(f
);
1621 assert(shader_size
);
1623 /* add one for terminating zero */
1626 buffer
= malloc(shader_size
);
1629 len
= fread(buffer
, 1, shader_size
, f
);
1636 #endif /* HAVE_SHA1 */
1639 * Called via glShaderSource() and glShaderSourceARB() API functions.
1640 * Basically, concatenate the source code strings into one long string
1641 * and pass it to _mesa_shader_source().
1644 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1645 const GLchar
* const * string
, const GLint
* length
)
1647 GET_CURRENT_CONTEXT(ctx
);
1649 GLsizei i
, totalLength
;
1651 struct gl_shader
*sh
;
1653 #if defined(HAVE_SHA1)
1654 GLcharARB
*replacement
;
1655 #endif /* HAVE_SHA1 */
1657 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1661 if (string
== NULL
) {
1662 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1667 * This array holds offsets of where the appropriate string ends, thus the
1668 * last element will be set to the total length of the source code.
1670 offsets
= malloc(count
* sizeof(GLint
));
1671 if (offsets
== NULL
) {
1672 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1676 for (i
= 0; i
< count
; i
++) {
1677 if (string
[i
] == NULL
) {
1678 free((GLvoid
*) offsets
);
1679 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1680 "glShaderSourceARB(null string)");
1683 if (length
== NULL
|| length
[i
] < 0)
1684 offsets
[i
] = strlen(string
[i
]);
1686 offsets
[i
] = length
[i
];
1687 /* accumulate string lengths */
1689 offsets
[i
] += offsets
[i
- 1];
1692 /* Total length of source string is sum off all strings plus two.
1693 * One extra byte for terminating zero, another extra byte to silence
1694 * valgrind warnings in the parser/grammer code.
1696 totalLength
= offsets
[count
- 1] + 2;
1697 source
= malloc(totalLength
* sizeof(GLcharARB
));
1698 if (source
== NULL
) {
1699 free((GLvoid
*) offsets
);
1700 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1704 for (i
= 0; i
< count
; i
++) {
1705 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1706 memcpy(source
+ start
, string
[i
],
1707 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1709 source
[totalLength
- 1] = '\0';
1710 source
[totalLength
- 2] = '\0';
1712 #if defined(HAVE_SHA1)
1713 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1714 * if corresponding entry found from MESA_SHADER_READ_PATH.
1716 dump_shader(sh
->Stage
, source
);
1718 replacement
= read_shader(sh
->Stage
, source
);
1721 source
= replacement
;
1723 #endif /* HAVE_SHA1 */
1725 shader_source(sh
, source
);
1732 _mesa_UseProgram(GLuint program
)
1734 GET_CURRENT_CONTEXT(ctx
);
1735 struct gl_shader_program
*shProg
;
1737 if (MESA_VERBOSE
& VERBOSE_API
)
1738 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1740 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1741 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1742 "glUseProgram(transform feedback active)");
1747 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1751 if (!shProg
->LinkStatus
) {
1752 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1753 "glUseProgram(program %u not linked)", program
);
1758 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1759 print_shader_info(shProg
);
1766 /* The ARB_separate_shader_object spec says:
1768 * "The executable code for an individual shader stage is taken from
1769 * the current program for that stage. If there is a current program
1770 * object established by UseProgram, that program is considered current
1771 * for all stages. Otherwise, if there is a bound program pipeline
1772 * object (section 2.14.PPO), the program bound to the appropriate
1773 * stage of the pipeline object is considered current."
1776 /* Attach shader state to the binding point */
1777 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1778 /* Update the program */
1779 _mesa_use_program(ctx
, shProg
);
1781 /* Must be done first: detach the progam */
1782 _mesa_use_program(ctx
, shProg
);
1783 /* Unattach shader_state binding point */
1784 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1785 /* If a pipeline was bound, rebind it */
1786 if (ctx
->Pipeline
.Current
) {
1787 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1794 _mesa_ValidateProgram(GLuint program
)
1796 GET_CURRENT_CONTEXT(ctx
);
1797 validate_program(ctx
, program
);
1802 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1805 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1806 GLint
* range
, GLint
* precision
)
1808 const struct gl_program_constants
*limits
;
1809 const struct gl_precision
*p
;
1810 GET_CURRENT_CONTEXT(ctx
);
1812 switch (shadertype
) {
1813 case GL_VERTEX_SHADER
:
1814 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1816 case GL_FRAGMENT_SHADER
:
1817 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1820 _mesa_error(ctx
, GL_INVALID_ENUM
,
1821 "glGetShaderPrecisionFormat(shadertype)");
1825 switch (precisiontype
) {
1827 p
= &limits
->LowFloat
;
1829 case GL_MEDIUM_FLOAT
:
1830 p
= &limits
->MediumFloat
;
1833 p
= &limits
->HighFloat
;
1836 p
= &limits
->LowInt
;
1839 p
= &limits
->MediumInt
;
1842 p
= &limits
->HighInt
;
1845 _mesa_error(ctx
, GL_INVALID_ENUM
,
1846 "glGetShaderPrecisionFormat(precisiontype)");
1850 range
[0] = p
->RangeMin
;
1851 range
[1] = p
->RangeMax
;
1852 precision
[0] = p
->Precision
;
1857 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1860 _mesa_ReleaseShaderCompiler(void)
1862 _mesa_destroy_shader_compiler_caches();
1867 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1870 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1871 const void* binary
, GLint length
)
1873 GET_CURRENT_CONTEXT(ctx
);
1875 (void) binaryformat
;
1878 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1879 * page 88 of the OpenGL 4.5 specs state:
1881 * "An INVALID_VALUE error is generated if count or length is negative.
1882 * An INVALID_ENUM error is generated if binaryformat is not a supported
1883 * format returned in SHADER_BINARY_FORMATS."
1885 if (n
< 0 || length
< 0) {
1886 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1890 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1895 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1896 GLenum
*binaryFormat
, GLvoid
*binary
)
1898 struct gl_shader_program
*shProg
;
1899 GLsizei length_dummy
;
1900 GET_CURRENT_CONTEXT(ctx
);
1903 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1907 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1911 /* The ARB_get_program_binary spec says:
1913 * "If <length> is NULL, then no length is returned."
1915 * Ensure that length always points to valid storage to avoid multiple NULL
1916 * pointer checks below.
1919 length
= &length_dummy
;
1922 /* The ARB_get_program_binary spec says:
1924 * "When a program object's LINK_STATUS is FALSE, its program binary
1925 * length is zero, and a call to GetProgramBinary will generate an
1926 * INVALID_OPERATION error.
1928 if (!shProg
->LinkStatus
) {
1929 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1930 "glGetProgramBinary(program %u not linked)",
1937 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1938 "glGetProgramBinary(driver supports zero binary formats)");
1940 (void) binaryFormat
;
1945 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1946 const GLvoid
*binary
, GLsizei length
)
1948 struct gl_shader_program
*shProg
;
1949 GET_CURRENT_CONTEXT(ctx
);
1951 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1955 (void) binaryFormat
;
1958 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
1960 * "If a negative number is provided where an argument of type sizei or
1961 * sizeiptr is specified, an INVALID_VALUE error is generated."
1964 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
1968 /* The ARB_get_program_binary spec says:
1970 * "<binaryFormat> and <binary> must be those returned by a previous
1971 * call to GetProgramBinary, and <length> must be the length of the
1972 * program binary as returned by GetProgramBinary or GetProgramiv with
1973 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
1974 * setting the LINK_STATUS of <program> to FALSE, if these conditions
1977 * Since any value of binaryFormat passed "is not one of those specified as
1978 * allowable for [this] command, an INVALID_ENUM error is generated."
1980 shProg
->LinkStatus
= GL_FALSE
;
1981 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
1986 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1988 struct gl_shader_program
*shProg
;
1989 GET_CURRENT_CONTEXT(ctx
);
1991 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1992 "glProgramParameteri");
1997 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1998 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
1999 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2000 * even be in the dispatch table, so we shouldn't need to expclicitly
2003 * On desktop, we ignore the 3.0+ requirement because it is silly.
2006 /* The ARB_get_program_binary extension spec says:
2008 * "An INVALID_VALUE error is generated if the <value> argument to
2009 * ProgramParameteri is not TRUE or FALSE."
2011 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2015 /* No need to notify the driver. Any changes will actually take effect
2016 * the next time the shader is linked.
2018 * The ARB_get_program_binary extension spec says:
2020 * "To indicate that a program binary is likely to be retrieved,
2021 * ProgramParameteri should be called with <pname>
2022 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2023 * will not be in effect until the next time LinkProgram or
2024 * ProgramBinary has been called successfully."
2026 * The resloution of issue 9 in the extension spec also says:
2028 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2029 * to indicate to the GL implementation that this program will
2030 * likely be saved with GetProgramBinary at some point. This will
2031 * give the GL implementation the opportunity to track any state
2032 * changes made to the program before being saved such that when it
2033 * is loaded again a recompile can be avoided."
2035 shProg
->BinaryRetreivableHint
= value
;
2038 case GL_PROGRAM_SEPARABLE
:
2039 /* Spec imply that the behavior is the same as ARB_get_program_binary
2040 * Chapter 7.3 Program Objects
2042 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2045 shProg
->SeparateShader
= value
;
2049 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2050 _mesa_enum_to_string(pname
));
2055 _mesa_error(ctx
, GL_INVALID_VALUE
,
2056 "glProgramParameteri(pname=%s, value=%d): "
2057 "value must be 0 or 1.",
2058 _mesa_enum_to_string(pname
),
2064 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2065 struct gl_shader_program
*shProg
,
2066 struct gl_pipeline_object
*shTarget
)
2068 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2069 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2071 if (ctx
->Driver
.UseProgram
)
2072 ctx
->Driver
.UseProgram(ctx
, shProg
);
2077 * Copy program-specific data generated by linking from the gl_shader_program
2078 * object to a specific gl_program object.
2081 _mesa_copy_linked_program_data(gl_shader_stage type
,
2082 const struct gl_shader_program
*src
,
2083 struct gl_program
*dst
)
2086 case MESA_SHADER_VERTEX
:
2087 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2089 case MESA_SHADER_TESS_CTRL
: {
2090 struct gl_tess_ctrl_program
*dst_tcp
=
2091 (struct gl_tess_ctrl_program
*) dst
;
2092 dst_tcp
->VerticesOut
= src
->TessCtrl
.VerticesOut
;
2095 case MESA_SHADER_TESS_EVAL
: {
2096 struct gl_tess_eval_program
*dst_tep
=
2097 (struct gl_tess_eval_program
*) dst
;
2098 dst_tep
->PrimitiveMode
= src
->TessEval
.PrimitiveMode
;
2099 dst_tep
->Spacing
= src
->TessEval
.Spacing
;
2100 dst_tep
->VertexOrder
= src
->TessEval
.VertexOrder
;
2101 dst_tep
->PointMode
= src
->TessEval
.PointMode
;
2102 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2105 case MESA_SHADER_GEOMETRY
: {
2106 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
2107 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
2108 dst_gp
->VerticesOut
= src
->Geom
.VerticesOut
;
2109 dst_gp
->Invocations
= src
->Geom
.Invocations
;
2110 dst_gp
->InputType
= src
->Geom
.InputType
;
2111 dst_gp
->OutputType
= src
->Geom
.OutputType
;
2112 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2113 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;
2114 dst_gp
->UsesStreams
= src
->Geom
.UsesStreams
;
2117 case MESA_SHADER_FRAGMENT
: {
2118 struct gl_fragment_program
*dst_fp
= (struct gl_fragment_program
*) dst
;
2119 dst_fp
->FragDepthLayout
= src
->FragDepthLayout
;
2122 case MESA_SHADER_COMPUTE
: {
2123 struct gl_compute_program
*dst_cp
= (struct gl_compute_program
*) dst
;
2125 for (i
= 0; i
< 3; i
++)
2126 dst_cp
->LocalSize
[i
] = src
->Comp
.LocalSize
[i
];
2135 * ARB_separate_shader_objects: Compile & Link Program
2138 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2139 const GLchar
* const *strings
)
2141 GET_CURRENT_CONTEXT(ctx
);
2143 const GLuint shader
= create_shader(ctx
, type
);
2147 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2148 * GL_INVALID_VALUE should be generated if count < 0
2151 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2156 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2158 compile_shader(ctx
, shader
);
2160 program
= create_shader_program(ctx
);
2162 struct gl_shader_program
*shProg
;
2163 struct gl_shader
*sh
;
2164 GLint compiled
= GL_FALSE
;
2166 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2167 sh
= _mesa_lookup_shader(ctx
, shader
);
2169 shProg
->SeparateShader
= GL_TRUE
;
2171 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2173 attach_shader(ctx
, program
, shader
);
2174 link_program(ctx
, program
);
2175 detach_shader(ctx
, program
, shader
);
2179 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2180 append
-error
-to
-info
-log
;
2181 shProg
->LinkStatus
= GL_FALSE
;
2186 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2189 delete_shader(ctx
, shader
);
2197 * For GL_ARB_tessellation_shader
2199 extern void GLAPIENTRY
2200 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2202 GET_CURRENT_CONTEXT(ctx
);
2204 if (!_mesa_has_tessellation(ctx
)) {
2205 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2209 if (pname
!= GL_PATCH_VERTICES
) {
2210 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2214 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2215 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2219 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2223 extern void GLAPIENTRY
2224 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2226 GET_CURRENT_CONTEXT(ctx
);
2228 if (!_mesa_has_tessellation(ctx
)) {
2229 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2234 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2235 FLUSH_VERTICES(ctx
, 0);
2236 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2237 4 * sizeof(GLfloat
));
2238 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2240 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2241 FLUSH_VERTICES(ctx
, 0);
2242 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2243 2 * sizeof(GLfloat
));
2244 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2247 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2253 * ARB_shader_subroutine
2256 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2259 GET_CURRENT_CONTEXT(ctx
);
2260 const char *api_name
= "glGetSubroutineUniformLocation";
2261 struct gl_shader_program
*shProg
;
2262 GLenum resource_type
;
2263 gl_shader_stage stage
;
2265 if (!_mesa_has_shader_subroutine(ctx
)) {
2266 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2270 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2271 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2275 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2279 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2280 if (!shProg
->_LinkedShaders
[stage
]) {
2281 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2285 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2286 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2290 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2293 GET_CURRENT_CONTEXT(ctx
);
2294 const char *api_name
= "glGetSubroutineIndex";
2295 struct gl_shader_program
*shProg
;
2296 struct gl_program_resource
*res
;
2297 GLenum resource_type
;
2298 gl_shader_stage stage
;
2300 if (!_mesa_has_shader_subroutine(ctx
)) {
2301 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2305 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2306 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2310 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2314 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2315 if (!shProg
->_LinkedShaders
[stage
]) {
2316 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2320 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2321 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2323 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2327 return _mesa_program_resource_index(shProg
, res
);
2332 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2333 GLuint index
, GLenum pname
, GLint
*values
)
2335 GET_CURRENT_CONTEXT(ctx
);
2336 const char *api_name
= "glGetActiveSubroutineUniformiv";
2337 struct gl_shader_program
*shProg
;
2338 struct gl_shader
*sh
;
2339 gl_shader_stage stage
;
2340 struct gl_program_resource
*res
;
2341 const struct gl_uniform_storage
*uni
;
2342 GLenum resource_type
;
2345 if (!_mesa_has_shader_subroutine(ctx
)) {
2346 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2350 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2351 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2355 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2359 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2360 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2362 sh
= shProg
->_LinkedShaders
[stage
];
2364 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2369 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2370 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2373 values
[0] = uni
->num_compatible_subroutines
;
2377 case GL_COMPATIBLE_SUBROUTINES
: {
2378 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2382 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2383 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2384 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2385 if (fn
->types
[j
] == uni
->type
) {
2386 values
[count
++] = i
;
2394 case GL_UNIFORM_SIZE
:
2395 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2398 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2401 case GL_UNIFORM_NAME_LENGTH
:
2402 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2404 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2405 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);;
2409 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2416 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2417 GLuint index
, GLsizei bufsize
,
2418 GLsizei
*length
, GLchar
*name
)
2420 GET_CURRENT_CONTEXT(ctx
);
2421 const char *api_name
= "glGetActiveSubroutineUniformName";
2422 struct gl_shader_program
*shProg
;
2423 GLenum resource_type
;
2424 gl_shader_stage stage
;
2426 if (!_mesa_has_shader_subroutine(ctx
)) {
2427 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2431 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2432 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2436 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2440 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2441 if (!shProg
->_LinkedShaders
[stage
]) {
2442 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2446 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2447 /* get program resource name */
2448 _mesa_get_program_resource_name(shProg
, resource_type
,
2450 length
, name
, api_name
);
2455 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2456 GLuint index
, GLsizei bufsize
,
2457 GLsizei
*length
, GLchar
*name
)
2459 GET_CURRENT_CONTEXT(ctx
);
2460 const char *api_name
= "glGetActiveSubroutineName";
2461 struct gl_shader_program
*shProg
;
2462 GLenum resource_type
;
2463 gl_shader_stage stage
;
2465 if (!_mesa_has_shader_subroutine(ctx
)) {
2466 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2470 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2471 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2475 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2479 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2480 if (!shProg
->_LinkedShaders
[stage
]) {
2481 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2484 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2485 _mesa_get_program_resource_name(shProg
, resource_type
,
2487 length
, name
, api_name
);
2492 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2493 const GLuint
*indices
)
2495 GET_CURRENT_CONTEXT(ctx
);
2496 const char *api_name
= "glUniformSubroutinesuiv";
2497 struct gl_shader_program
*shProg
;
2498 struct gl_shader
*sh
;
2499 gl_shader_stage stage
;
2502 if (!_mesa_has_shader_subroutine(ctx
)) {
2503 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2507 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2508 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2512 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2513 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2515 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2519 sh
= shProg
->_LinkedShaders
[stage
];
2521 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2525 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2526 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2532 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2538 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2541 for (j
= i
; j
< i
+ uni_count
; j
++) {
2542 struct gl_subroutine_function
*subfn
;
2543 if (indices
[j
] >= sh
->NumSubroutineFunctions
) {
2544 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2548 subfn
= &sh
->SubroutineFunctions
[indices
[j
]];
2549 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2550 if (subfn
->types
[k
] == uni
->type
)
2553 if (k
== subfn
->num_compat_types
) {
2554 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2561 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2564 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2570 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2572 memcpy(&uni
->storage
[0], &indices
[i
],
2573 sizeof(GLuint
) * uni_count
);
2575 uni
->initialized
= true;
2576 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2583 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2586 GET_CURRENT_CONTEXT(ctx
);
2587 const char *api_name
= "glGetUniformSubroutineuiv";
2588 struct gl_shader_program
*shProg
;
2589 struct gl_shader
*sh
;
2590 gl_shader_stage stage
;
2592 if (!_mesa_has_shader_subroutine(ctx
)) {
2593 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2597 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2598 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2602 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2603 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2605 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2609 sh
= shProg
->_LinkedShaders
[stage
];
2611 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2615 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2616 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2621 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[location
];
2622 int offset
= location
- uni
->opaque
[stage
].index
;
2623 memcpy(params
, &uni
->storage
[offset
],
2630 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2631 GLenum pname
, GLint
*values
)
2633 GET_CURRENT_CONTEXT(ctx
);
2634 const char *api_name
= "glGetProgramStageiv";
2635 struct gl_shader_program
*shProg
;
2636 struct gl_shader
*sh
;
2637 gl_shader_stage stage
;
2639 if (!_mesa_has_shader_subroutine(ctx
)) {
2640 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2644 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2645 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2649 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2653 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2654 sh
= shProg
->_LinkedShaders
[stage
];
2656 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2661 case GL_ACTIVE_SUBROUTINES
:
2662 values
[0] = sh
->NumSubroutineFunctions
;
2664 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2665 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2667 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2668 values
[0] = sh
->NumSubroutineUniformTypes
;
2670 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2674 GLenum resource_type
;
2675 struct gl_program_resource
*res
;
2677 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2678 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2679 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2681 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2686 values
[0] = max_len
;
2689 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2693 GLenum resource_type
;
2694 struct gl_program_resource
*res
;
2696 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2697 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2698 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2700 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2701 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2707 values
[0] = max_len
;
2711 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2718 find_compat_subroutine(struct gl_shader
*sh
, const struct glsl_type
*type
)
2722 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2723 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2724 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2725 if (fn
->types
[j
] == type
)
2733 _mesa_shader_init_subroutine_defaults(struct gl_shader
*sh
)
2737 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2738 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2744 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2745 val
= find_compat_subroutine(sh
, uni
->type
);
2747 for (j
= 0; j
< uni_count
; j
++)
2748 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2749 uni
->initialized
= true;
2750 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2755 _mesa_shader_program_init_subroutine_defaults(struct gl_shader_program
*shProg
)
2762 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2763 if (!shProg
->_LinkedShaders
[i
])
2766 _mesa_shader_init_subroutine_defaults(shProg
->_LinkedShaders
[i
]);