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"
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
);
953 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
962 _mesa_compile_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
968 /* If the user called glCompileShader without first calling
969 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
971 sh
->CompileStatus
= GL_FALSE
;
973 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
974 _mesa_log("GLSL source for %s shader %d:\n",
975 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
976 _mesa_log("%s\n", sh
->Source
);
979 /* this call will set the shader->CompileStatus field to indicate if
980 * compilation was successful.
982 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
984 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
985 _mesa_write_shader_to_file(sh
);
988 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
989 if (sh
->CompileStatus
) {
990 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
991 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
994 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
996 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
997 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
998 _mesa_log("%s\n", sh
->InfoLog
);
1003 if (!sh
->CompileStatus
) {
1004 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1005 _mesa_log("GLSL source for %s shader %d:\n",
1006 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1007 _mesa_log("%s\n", sh
->Source
);
1008 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1011 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1012 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1013 sh
->Name
, sh
->InfoLog
);
1020 * Link a program's shaders.
1023 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1028 /* From the ARB_transform_feedback2 specification:
1029 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1030 * the name of a program being used by one or more transform feedback
1031 * objects, even if the objects are not currently bound or are paused."
1033 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1034 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1035 "glLinkProgram(transform feedback is using the program)");
1039 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1041 _mesa_glsl_link_shader(ctx
, shProg
);
1043 if (shProg
->LinkStatus
== GL_FALSE
&&
1044 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1045 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1046 shProg
->Name
, shProg
->InfoLog
);
1053 printf("Link %u shaders in program %u: %s\n",
1054 shProg
->NumShaders
, shProg
->Name
,
1055 shProg
->LinkStatus
? "Success" : "Failed");
1057 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1058 printf(" shader %u, type 0x%x\n",
1059 shProg
->Shaders
[i
]->Name
,
1060 shProg
->Shaders
[i
]->Type
);
1067 * Print basic shader info (for debug).
1070 print_shader_info(const struct gl_shader_program
*shProg
)
1074 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1075 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1076 printf(" %s shader %u, checksum %u\n",
1077 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1078 shProg
->Shaders
[i
]->Name
,
1079 shProg
->Shaders
[i
]->SourceChecksum
);
1081 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1082 printf(" vert prog %u\n",
1083 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1084 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1085 printf(" frag prog %u\n",
1086 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1087 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1088 printf(" geom prog %u\n",
1089 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1090 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1091 printf(" tesc prog %u\n",
1092 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1093 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1094 printf(" tese prog %u\n",
1095 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1100 * Use the named shader program for subsequent glUniform calls
1103 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1106 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1107 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1108 "%s(program %u not linked)", caller
, shProg
->Name
);
1112 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1113 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1119 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1120 struct gl_shader_program
*shProg
,
1121 struct gl_pipeline_object
*shTarget
)
1123 struct gl_shader_program
**target
;
1125 target
= &shTarget
->CurrentProgram
[stage
];
1126 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1129 if (*target
!= shProg
) {
1130 /* Program is current, flush it */
1131 if (shTarget
== ctx
->_Shader
) {
1132 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1135 /* If the shader is also bound as the current rendering shader, unbind
1136 * it from that binding point as well. This ensures that the correct
1137 * semantics of glDeleteProgram are maintained.
1140 case MESA_SHADER_VERTEX
:
1141 case MESA_SHADER_TESS_CTRL
:
1142 case MESA_SHADER_TESS_EVAL
:
1143 case MESA_SHADER_GEOMETRY
:
1144 case MESA_SHADER_COMPUTE
:
1145 /* Empty for now. */
1147 case MESA_SHADER_FRAGMENT
:
1148 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1149 _mesa_reference_shader_program(ctx
,
1150 &ctx
->_Shader
->_CurrentFragmentProgram
,
1156 _mesa_reference_shader_program(ctx
, target
, shProg
);
1163 * Use the named shader program for subsequent rendering.
1166 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1169 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1170 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1171 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1173 _mesa_shader_program_init_subroutine_defaults(shProg
);
1174 if (ctx
->Driver
.UseProgram
)
1175 ctx
->Driver
.UseProgram(ctx
, shProg
);
1180 * Do validation of the given shader program.
1181 * \param errMsg returns error message if validation fails.
1182 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1185 validate_shader_program(const struct gl_shader_program
*shProg
,
1188 if (!shProg
->LinkStatus
) {
1192 /* From the GL spec, a program is invalid if any of these are true:
1194 any two active samplers in the current program object are of
1195 different types, but refer to the same texture image unit,
1197 any active sampler in the current program object refers to a texture
1198 image unit where fixed-function fragment processing accesses a
1199 texture target that does not match the sampler type, or
1201 the sum of the number of active samplers in the program and the
1202 number of texture image units enabled for fixed-function fragment
1203 processing exceeds the combined limit on the total number of texture
1204 image units allowed.
1208 * Check: any two active samplers in the current program object are of
1209 * different types, but refer to the same texture image unit,
1211 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1219 * Called via glValidateProgram()
1222 validate_program(struct gl_context
*ctx
, GLuint program
)
1224 struct gl_shader_program
*shProg
;
1225 char errMsg
[100] = "";
1227 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1232 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1233 if (!shProg
->Validated
) {
1234 /* update info log */
1235 if (shProg
->InfoLog
) {
1236 ralloc_free(shProg
->InfoLog
);
1238 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1245 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1247 GET_CURRENT_CONTEXT(ctx
);
1248 attach_shader(ctx
, program
, shader
);
1253 _mesa_AttachShader(GLuint program
, GLuint shader
)
1255 GET_CURRENT_CONTEXT(ctx
);
1256 attach_shader(ctx
, program
, shader
);
1261 _mesa_CompileShader(GLuint shaderObj
)
1263 GET_CURRENT_CONTEXT(ctx
);
1264 if (MESA_VERBOSE
& VERBOSE_API
)
1265 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1266 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1267 "glCompileShader"));
1272 _mesa_CreateShader(GLenum type
)
1274 GET_CURRENT_CONTEXT(ctx
);
1275 if (MESA_VERBOSE
& VERBOSE_API
)
1276 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1277 return create_shader(ctx
, type
);
1281 GLhandleARB GLAPIENTRY
1282 _mesa_CreateShaderObjectARB(GLenum type
)
1284 GET_CURRENT_CONTEXT(ctx
);
1285 return create_shader(ctx
, type
);
1290 _mesa_CreateProgram(void)
1292 GET_CURRENT_CONTEXT(ctx
);
1293 if (MESA_VERBOSE
& VERBOSE_API
)
1294 _mesa_debug(ctx
, "glCreateProgram\n");
1295 return create_shader_program(ctx
);
1299 GLhandleARB GLAPIENTRY
1300 _mesa_CreateProgramObjectARB(void)
1302 GET_CURRENT_CONTEXT(ctx
);
1303 return create_shader_program(ctx
);
1308 _mesa_DeleteObjectARB(GLhandleARB obj
)
1310 if (MESA_VERBOSE
& VERBOSE_API
) {
1311 GET_CURRENT_CONTEXT(ctx
);
1312 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1316 GET_CURRENT_CONTEXT(ctx
);
1317 FLUSH_VERTICES(ctx
, 0);
1318 if (is_program(ctx
, obj
)) {
1319 delete_shader_program(ctx
, obj
);
1321 else if (is_shader(ctx
, obj
)) {
1322 delete_shader(ctx
, obj
);
1332 _mesa_DeleteProgram(GLuint name
)
1335 GET_CURRENT_CONTEXT(ctx
);
1336 FLUSH_VERTICES(ctx
, 0);
1337 delete_shader_program(ctx
, name
);
1343 _mesa_DeleteShader(GLuint name
)
1346 GET_CURRENT_CONTEXT(ctx
);
1347 FLUSH_VERTICES(ctx
, 0);
1348 delete_shader(ctx
, name
);
1354 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1356 GET_CURRENT_CONTEXT(ctx
);
1357 detach_shader(ctx
, program
, shader
);
1362 _mesa_DetachShader(GLuint program
, GLuint shader
)
1364 GET_CURRENT_CONTEXT(ctx
);
1365 detach_shader(ctx
, program
, shader
);
1370 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1371 GLsizei
* count
, GLhandleARB
* obj
)
1373 GET_CURRENT_CONTEXT(ctx
);
1374 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1379 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1380 GLsizei
*count
, GLuint
*obj
)
1382 GET_CURRENT_CONTEXT(ctx
);
1383 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1388 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1389 GLcharARB
* infoLog
)
1391 GET_CURRENT_CONTEXT(ctx
);
1392 if (is_program(ctx
, object
)) {
1393 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1395 else if (is_shader(ctx
, object
)) {
1396 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1399 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1405 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1407 GET_CURRENT_CONTEXT(ctx
);
1408 /* Implement in terms of GetProgramiv, GetShaderiv */
1409 if (is_program(ctx
, object
)) {
1410 if (pname
== GL_OBJECT_TYPE_ARB
) {
1411 *params
= GL_PROGRAM_OBJECT_ARB
;
1414 get_programiv(ctx
, object
, pname
, params
);
1417 else if (is_shader(ctx
, object
)) {
1418 if (pname
== GL_OBJECT_TYPE_ARB
) {
1419 *params
= GL_SHADER_OBJECT_ARB
;
1422 get_shaderiv(ctx
, object
, pname
, params
);
1426 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1432 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1435 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1436 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1437 params
[0] = (GLfloat
) iparams
[0];
1442 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1444 GET_CURRENT_CONTEXT(ctx
);
1445 get_programiv(ctx
, program
, pname
, params
);
1450 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1452 GET_CURRENT_CONTEXT(ctx
);
1453 get_shaderiv(ctx
, shader
, pname
, params
);
1458 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1459 GLsizei
*length
, GLchar
*infoLog
)
1461 GET_CURRENT_CONTEXT(ctx
);
1462 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1467 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1468 GLsizei
*length
, GLchar
*infoLog
)
1470 GET_CURRENT_CONTEXT(ctx
);
1471 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1476 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1477 GLsizei
*length
, GLchar
*sourceOut
)
1479 GET_CURRENT_CONTEXT(ctx
);
1480 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1484 GLhandleARB GLAPIENTRY
1485 _mesa_GetHandleARB(GLenum pname
)
1487 GET_CURRENT_CONTEXT(ctx
);
1488 return get_handle(ctx
, pname
);
1492 GLboolean GLAPIENTRY
1493 _mesa_IsProgram(GLuint name
)
1495 GET_CURRENT_CONTEXT(ctx
);
1496 return is_program(ctx
, name
);
1500 GLboolean GLAPIENTRY
1501 _mesa_IsShader(GLuint name
)
1503 GET_CURRENT_CONTEXT(ctx
);
1504 return is_shader(ctx
, name
);
1509 _mesa_LinkProgram(GLuint programObj
)
1511 GET_CURRENT_CONTEXT(ctx
);
1512 if (MESA_VERBOSE
& VERBOSE_API
)
1513 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1514 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1518 #if defined(HAVE_SHA1)
1520 * Generate a SHA-1 hash value string for given source string.
1523 generate_sha1(const char *source
, char sha_str
[64])
1525 unsigned char sha
[20];
1526 _mesa_sha1_compute(source
, strlen(source
), sha
);
1527 _mesa_sha1_format(sha_str
, sha
);
1531 * Construct a full path for shader replacement functionality using
1534 * <path>/<stage prefix>_<CHECKSUM>.glsl
1537 construct_name(const gl_shader_stage stage
, const char *source
,
1538 const char *path
, char *name
, unsigned length
)
1541 static const char *types
[] = {
1542 "VS", "TC", "TE", "GS", "FS", "CS",
1545 generate_sha1(source
, sha
);
1546 _mesa_snprintf(name
, length
, "%s/%s_%s.glsl", path
, types
[stage
],
1551 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1554 dump_shader(const gl_shader_stage stage
, const char *source
)
1556 char name
[PATH_MAX
];
1557 static bool path_exists
= true;
1564 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1566 path_exists
= false;
1570 construct_name(stage
, source
, dump_path
, name
, PATH_MAX
);
1572 f
= fopen(name
, "w");
1577 GET_CURRENT_CONTEXT(ctx
);
1578 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1584 * Read shader source code from a file.
1585 * Useful for debugging to override an app's shader.
1588 read_shader(const gl_shader_stage stage
, const char *source
)
1590 char name
[PATH_MAX
];
1592 static bool path_exists
= true;
1593 int len
, shader_size
= 0;
1600 read_path
= getenv("MESA_SHADER_READ_PATH");
1602 path_exists
= false;
1606 construct_name(stage
, source
, read_path
, name
, PATH_MAX
);
1608 f
= fopen(name
, "r");
1612 /* allocate enough room for the entire shader */
1613 fseek(f
, 0, SEEK_END
);
1614 shader_size
= ftell(f
);
1616 assert(shader_size
);
1618 /* add one for terminating zero */
1621 buffer
= malloc(shader_size
);
1624 len
= fread(buffer
, 1, shader_size
, f
);
1631 #endif /* HAVE_SHA1 */
1634 * Called via glShaderSource() and glShaderSourceARB() API functions.
1635 * Basically, concatenate the source code strings into one long string
1636 * and pass it to _mesa_shader_source().
1639 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1640 const GLchar
* const * string
, const GLint
* length
)
1642 GET_CURRENT_CONTEXT(ctx
);
1644 GLsizei i
, totalLength
;
1646 struct gl_shader
*sh
;
1648 #if defined(HAVE_SHA1)
1649 GLcharARB
*replacement
;
1650 #endif /* HAVE_SHA1 */
1652 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1656 if (string
== NULL
) {
1657 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1662 * This array holds offsets of where the appropriate string ends, thus the
1663 * last element will be set to the total length of the source code.
1665 offsets
= malloc(count
* sizeof(GLint
));
1666 if (offsets
== NULL
) {
1667 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1671 for (i
= 0; i
< count
; i
++) {
1672 if (string
[i
] == NULL
) {
1673 free((GLvoid
*) offsets
);
1674 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1675 "glShaderSourceARB(null string)");
1678 if (length
== NULL
|| length
[i
] < 0)
1679 offsets
[i
] = strlen(string
[i
]);
1681 offsets
[i
] = length
[i
];
1682 /* accumulate string lengths */
1684 offsets
[i
] += offsets
[i
- 1];
1687 /* Total length of source string is sum off all strings plus two.
1688 * One extra byte for terminating zero, another extra byte to silence
1689 * valgrind warnings in the parser/grammer code.
1691 totalLength
= offsets
[count
- 1] + 2;
1692 source
= malloc(totalLength
* sizeof(GLcharARB
));
1693 if (source
== NULL
) {
1694 free((GLvoid
*) offsets
);
1695 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1699 for (i
= 0; i
< count
; i
++) {
1700 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1701 memcpy(source
+ start
, string
[i
],
1702 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1704 source
[totalLength
- 1] = '\0';
1705 source
[totalLength
- 2] = '\0';
1707 #if defined(HAVE_SHA1)
1708 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1709 * if corresponding entry found from MESA_SHADER_READ_PATH.
1711 dump_shader(sh
->Stage
, source
);
1713 replacement
= read_shader(sh
->Stage
, source
);
1716 source
= replacement
;
1718 #endif /* HAVE_SHA1 */
1720 shader_source(sh
, source
);
1727 _mesa_UseProgram(GLuint program
)
1729 GET_CURRENT_CONTEXT(ctx
);
1730 struct gl_shader_program
*shProg
;
1732 if (MESA_VERBOSE
& VERBOSE_API
)
1733 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1735 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1736 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1737 "glUseProgram(transform feedback active)");
1742 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1746 if (!shProg
->LinkStatus
) {
1747 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1748 "glUseProgram(program %u not linked)", program
);
1753 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1754 print_shader_info(shProg
);
1761 /* The ARB_separate_shader_object spec says:
1763 * "The executable code for an individual shader stage is taken from
1764 * the current program for that stage. If there is a current program
1765 * object established by UseProgram, that program is considered current
1766 * for all stages. Otherwise, if there is a bound program pipeline
1767 * object (section 2.14.PPO), the program bound to the appropriate
1768 * stage of the pipeline object is considered current."
1771 /* Attach shader state to the binding point */
1772 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1773 /* Update the program */
1774 _mesa_use_program(ctx
, shProg
);
1776 /* Must be done first: detach the progam */
1777 _mesa_use_program(ctx
, shProg
);
1778 /* Unattach shader_state binding point */
1779 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1780 /* If a pipeline was bound, rebind it */
1781 if (ctx
->Pipeline
.Current
) {
1782 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1789 _mesa_ValidateProgram(GLuint program
)
1791 GET_CURRENT_CONTEXT(ctx
);
1792 validate_program(ctx
, program
);
1797 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1800 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1801 GLint
* range
, GLint
* precision
)
1803 const struct gl_program_constants
*limits
;
1804 const struct gl_precision
*p
;
1805 GET_CURRENT_CONTEXT(ctx
);
1807 switch (shadertype
) {
1808 case GL_VERTEX_SHADER
:
1809 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1811 case GL_FRAGMENT_SHADER
:
1812 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1815 _mesa_error(ctx
, GL_INVALID_ENUM
,
1816 "glGetShaderPrecisionFormat(shadertype)");
1820 switch (precisiontype
) {
1822 p
= &limits
->LowFloat
;
1824 case GL_MEDIUM_FLOAT
:
1825 p
= &limits
->MediumFloat
;
1828 p
= &limits
->HighFloat
;
1831 p
= &limits
->LowInt
;
1834 p
= &limits
->MediumInt
;
1837 p
= &limits
->HighInt
;
1840 _mesa_error(ctx
, GL_INVALID_ENUM
,
1841 "glGetShaderPrecisionFormat(precisiontype)");
1845 range
[0] = p
->RangeMin
;
1846 range
[1] = p
->RangeMax
;
1847 precision
[0] = p
->Precision
;
1852 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1855 _mesa_ReleaseShaderCompiler(void)
1857 _mesa_destroy_shader_compiler_caches();
1862 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1865 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1866 const void* binary
, GLint length
)
1868 GET_CURRENT_CONTEXT(ctx
);
1870 (void) binaryformat
;
1873 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1874 * page 88 of the OpenGL 4.5 specs state:
1876 * "An INVALID_VALUE error is generated if count or length is negative.
1877 * An INVALID_ENUM error is generated if binaryformat is not a supported
1878 * format returned in SHADER_BINARY_FORMATS."
1880 if (n
< 0 || length
< 0) {
1881 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1885 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1890 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1891 GLenum
*binaryFormat
, GLvoid
*binary
)
1893 struct gl_shader_program
*shProg
;
1894 GLsizei length_dummy
;
1895 GET_CURRENT_CONTEXT(ctx
);
1898 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1902 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1906 /* The ARB_get_program_binary spec says:
1908 * "If <length> is NULL, then no length is returned."
1910 * Ensure that length always points to valid storage to avoid multiple NULL
1911 * pointer checks below.
1914 length
= &length_dummy
;
1917 /* The ARB_get_program_binary spec says:
1919 * "When a program object's LINK_STATUS is FALSE, its program binary
1920 * length is zero, and a call to GetProgramBinary will generate an
1921 * INVALID_OPERATION error.
1923 if (!shProg
->LinkStatus
) {
1924 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1925 "glGetProgramBinary(program %u not linked)",
1932 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1933 "glGetProgramBinary(driver supports zero binary formats)");
1935 (void) binaryFormat
;
1940 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1941 const GLvoid
*binary
, GLsizei length
)
1943 struct gl_shader_program
*shProg
;
1944 GET_CURRENT_CONTEXT(ctx
);
1946 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1950 (void) binaryFormat
;
1953 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
1955 * "If a negative number is provided where an argument of type sizei or
1956 * sizeiptr is specified, an INVALID_VALUE error is generated."
1959 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
1963 /* The ARB_get_program_binary spec says:
1965 * "<binaryFormat> and <binary> must be those returned by a previous
1966 * call to GetProgramBinary, and <length> must be the length of the
1967 * program binary as returned by GetProgramBinary or GetProgramiv with
1968 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
1969 * setting the LINK_STATUS of <program> to FALSE, if these conditions
1972 * Since any value of binaryFormat passed "is not one of those specified as
1973 * allowable for [this] command, an INVALID_ENUM error is generated."
1975 shProg
->LinkStatus
= GL_FALSE
;
1976 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
1981 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1983 struct gl_shader_program
*shProg
;
1984 GET_CURRENT_CONTEXT(ctx
);
1986 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1987 "glProgramParameteri");
1992 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1993 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
1994 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
1995 * even be in the dispatch table, so we shouldn't need to expclicitly
1998 * On desktop, we ignore the 3.0+ requirement because it is silly.
2001 /* The ARB_get_program_binary extension spec says:
2003 * "An INVALID_VALUE error is generated if the <value> argument to
2004 * ProgramParameteri is not TRUE or FALSE."
2006 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2010 /* No need to notify the driver. Any changes will actually take effect
2011 * the next time the shader is linked.
2013 * The ARB_get_program_binary extension spec says:
2015 * "To indicate that a program binary is likely to be retrieved,
2016 * ProgramParameteri should be called with <pname>
2017 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2018 * will not be in effect until the next time LinkProgram or
2019 * ProgramBinary has been called successfully."
2021 * The resloution of issue 9 in the extension spec also says:
2023 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2024 * to indicate to the GL implementation that this program will
2025 * likely be saved with GetProgramBinary at some point. This will
2026 * give the GL implementation the opportunity to track any state
2027 * changes made to the program before being saved such that when it
2028 * is loaded again a recompile can be avoided."
2030 shProg
->BinaryRetreivableHint
= value
;
2033 case GL_PROGRAM_SEPARABLE
:
2034 /* Spec imply that the behavior is the same as ARB_get_program_binary
2035 * Chapter 7.3 Program Objects
2037 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2040 shProg
->SeparateShader
= value
;
2044 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2045 _mesa_enum_to_string(pname
));
2050 _mesa_error(ctx
, GL_INVALID_VALUE
,
2051 "glProgramParameteri(pname=%s, value=%d): "
2052 "value must be 0 or 1.",
2053 _mesa_enum_to_string(pname
),
2059 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2060 struct gl_shader_program
*shProg
,
2061 struct gl_pipeline_object
*shTarget
)
2063 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2064 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2066 if (ctx
->Driver
.UseProgram
)
2067 ctx
->Driver
.UseProgram(ctx
, shProg
);
2072 * Copy program-specific data generated by linking from the gl_shader_program
2073 * object to a specific gl_program object.
2076 _mesa_copy_linked_program_data(gl_shader_stage type
,
2077 const struct gl_shader_program
*src
,
2078 struct gl_program
*dst
)
2081 case MESA_SHADER_VERTEX
:
2082 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2084 case MESA_SHADER_TESS_CTRL
: {
2085 struct gl_tess_ctrl_program
*dst_tcp
=
2086 (struct gl_tess_ctrl_program
*) dst
;
2087 dst_tcp
->VerticesOut
= src
->TessCtrl
.VerticesOut
;
2090 case MESA_SHADER_TESS_EVAL
: {
2091 struct gl_tess_eval_program
*dst_tep
=
2092 (struct gl_tess_eval_program
*) dst
;
2093 dst_tep
->PrimitiveMode
= src
->TessEval
.PrimitiveMode
;
2094 dst_tep
->Spacing
= src
->TessEval
.Spacing
;
2095 dst_tep
->VertexOrder
= src
->TessEval
.VertexOrder
;
2096 dst_tep
->PointMode
= src
->TessEval
.PointMode
;
2097 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2100 case MESA_SHADER_GEOMETRY
: {
2101 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
2102 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
2103 dst_gp
->VerticesOut
= src
->Geom
.VerticesOut
;
2104 dst_gp
->Invocations
= src
->Geom
.Invocations
;
2105 dst_gp
->InputType
= src
->Geom
.InputType
;
2106 dst_gp
->OutputType
= src
->Geom
.OutputType
;
2107 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2108 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;
2109 dst_gp
->UsesStreams
= src
->Geom
.UsesStreams
;
2112 case MESA_SHADER_FRAGMENT
: {
2113 struct gl_fragment_program
*dst_fp
= (struct gl_fragment_program
*) dst
;
2114 dst_fp
->FragDepthLayout
= src
->FragDepthLayout
;
2117 case MESA_SHADER_COMPUTE
: {
2118 struct gl_compute_program
*dst_cp
= (struct gl_compute_program
*) dst
;
2120 for (i
= 0; i
< 3; i
++)
2121 dst_cp
->LocalSize
[i
] = src
->Comp
.LocalSize
[i
];
2122 dst_cp
->SharedSize
= src
->Comp
.SharedSize
;
2131 * ARB_separate_shader_objects: Compile & Link Program
2134 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2135 const GLchar
* const *strings
)
2137 GET_CURRENT_CONTEXT(ctx
);
2139 const GLuint shader
= create_shader(ctx
, type
);
2143 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2144 * GL_INVALID_VALUE should be generated if count < 0
2147 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2152 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2154 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2155 _mesa_compile_shader(ctx
, sh
);
2157 program
= create_shader_program(ctx
);
2159 struct gl_shader_program
*shProg
;
2160 GLint compiled
= GL_FALSE
;
2162 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2164 shProg
->SeparateShader
= GL_TRUE
;
2166 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2168 attach_shader(ctx
, program
, shader
);
2169 _mesa_link_program(ctx
, shProg
);
2170 detach_shader(ctx
, program
, shader
);
2174 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2175 append
-error
-to
-info
-log
;
2176 shProg
->LinkStatus
= GL_FALSE
;
2181 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2184 delete_shader(ctx
, shader
);
2192 * For GL_ARB_tessellation_shader
2194 extern void GLAPIENTRY
2195 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2197 GET_CURRENT_CONTEXT(ctx
);
2199 if (!_mesa_has_tessellation(ctx
)) {
2200 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2204 if (pname
!= GL_PATCH_VERTICES
) {
2205 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2209 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2210 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2214 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2218 extern void GLAPIENTRY
2219 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2221 GET_CURRENT_CONTEXT(ctx
);
2223 if (!_mesa_has_tessellation(ctx
)) {
2224 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2229 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2230 FLUSH_VERTICES(ctx
, 0);
2231 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2232 4 * sizeof(GLfloat
));
2233 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2235 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2236 FLUSH_VERTICES(ctx
, 0);
2237 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2238 2 * sizeof(GLfloat
));
2239 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2242 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2248 * ARB_shader_subroutine
2251 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2254 GET_CURRENT_CONTEXT(ctx
);
2255 const char *api_name
= "glGetSubroutineUniformLocation";
2256 struct gl_shader_program
*shProg
;
2257 GLenum resource_type
;
2258 gl_shader_stage stage
;
2260 if (!_mesa_has_shader_subroutine(ctx
)) {
2261 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2265 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2266 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2270 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2274 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2275 if (!shProg
->_LinkedShaders
[stage
]) {
2276 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2280 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2281 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2285 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2288 GET_CURRENT_CONTEXT(ctx
);
2289 const char *api_name
= "glGetSubroutineIndex";
2290 struct gl_shader_program
*shProg
;
2291 struct gl_program_resource
*res
;
2292 GLenum resource_type
;
2293 gl_shader_stage stage
;
2295 if (!_mesa_has_shader_subroutine(ctx
)) {
2296 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2300 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2301 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2305 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2309 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2310 if (!shProg
->_LinkedShaders
[stage
]) {
2311 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2315 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2316 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2318 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2322 return _mesa_program_resource_index(shProg
, res
);
2327 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2328 GLuint index
, GLenum pname
, GLint
*values
)
2330 GET_CURRENT_CONTEXT(ctx
);
2331 const char *api_name
= "glGetActiveSubroutineUniformiv";
2332 struct gl_shader_program
*shProg
;
2333 struct gl_shader
*sh
;
2334 gl_shader_stage stage
;
2335 struct gl_program_resource
*res
;
2336 const struct gl_uniform_storage
*uni
;
2337 GLenum resource_type
;
2340 if (!_mesa_has_shader_subroutine(ctx
)) {
2341 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2345 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2346 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2350 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2354 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2355 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2357 sh
= shProg
->_LinkedShaders
[stage
];
2359 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2364 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2365 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2368 values
[0] = uni
->num_compatible_subroutines
;
2372 case GL_COMPATIBLE_SUBROUTINES
: {
2373 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2377 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2378 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2379 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2380 if (fn
->types
[j
] == uni
->type
) {
2381 values
[count
++] = i
;
2389 case GL_UNIFORM_SIZE
:
2390 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2393 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2396 case GL_UNIFORM_NAME_LENGTH
:
2397 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2399 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2400 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2404 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2411 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2412 GLuint index
, GLsizei bufsize
,
2413 GLsizei
*length
, GLchar
*name
)
2415 GET_CURRENT_CONTEXT(ctx
);
2416 const char *api_name
= "glGetActiveSubroutineUniformName";
2417 struct gl_shader_program
*shProg
;
2418 GLenum resource_type
;
2419 gl_shader_stage stage
;
2421 if (!_mesa_has_shader_subroutine(ctx
)) {
2422 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2426 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2427 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2431 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2435 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2436 if (!shProg
->_LinkedShaders
[stage
]) {
2437 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2441 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2442 /* get program resource name */
2443 _mesa_get_program_resource_name(shProg
, resource_type
,
2445 length
, name
, api_name
);
2450 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2451 GLuint index
, GLsizei bufsize
,
2452 GLsizei
*length
, GLchar
*name
)
2454 GET_CURRENT_CONTEXT(ctx
);
2455 const char *api_name
= "glGetActiveSubroutineName";
2456 struct gl_shader_program
*shProg
;
2457 GLenum resource_type
;
2458 gl_shader_stage stage
;
2460 if (!_mesa_has_shader_subroutine(ctx
)) {
2461 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2465 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2466 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2470 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2474 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2475 if (!shProg
->_LinkedShaders
[stage
]) {
2476 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2479 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2480 _mesa_get_program_resource_name(shProg
, resource_type
,
2482 length
, name
, api_name
);
2487 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2488 const GLuint
*indices
)
2490 GET_CURRENT_CONTEXT(ctx
);
2491 const char *api_name
= "glUniformSubroutinesuiv";
2492 struct gl_shader_program
*shProg
;
2493 struct gl_shader
*sh
;
2494 gl_shader_stage stage
;
2497 if (!_mesa_has_shader_subroutine(ctx
)) {
2498 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2502 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2503 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2507 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2508 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2510 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2514 sh
= shProg
->_LinkedShaders
[stage
];
2516 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2520 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2521 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2527 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2533 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2536 for (j
= i
; j
< i
+ uni_count
; j
++) {
2537 struct gl_subroutine_function
*subfn
;
2538 if (indices
[j
] >= sh
->NumSubroutineFunctions
) {
2539 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2543 subfn
= &sh
->SubroutineFunctions
[indices
[j
]];
2544 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2545 if (subfn
->types
[k
] == uni
->type
)
2548 if (k
== subfn
->num_compat_types
) {
2549 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2556 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2559 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2565 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2567 memcpy(&uni
->storage
[0], &indices
[i
],
2568 sizeof(GLuint
) * uni_count
);
2570 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2577 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2580 GET_CURRENT_CONTEXT(ctx
);
2581 const char *api_name
= "glGetUniformSubroutineuiv";
2582 struct gl_shader_program
*shProg
;
2583 struct gl_shader
*sh
;
2584 gl_shader_stage stage
;
2586 if (!_mesa_has_shader_subroutine(ctx
)) {
2587 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2591 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2592 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2596 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2597 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2599 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2603 sh
= shProg
->_LinkedShaders
[stage
];
2605 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2609 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2610 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2615 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[location
];
2616 int offset
= location
- uni
->opaque
[stage
].index
;
2617 memcpy(params
, &uni
->storage
[offset
],
2624 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2625 GLenum pname
, GLint
*values
)
2627 GET_CURRENT_CONTEXT(ctx
);
2628 const char *api_name
= "glGetProgramStageiv";
2629 struct gl_shader_program
*shProg
;
2630 struct gl_shader
*sh
;
2631 gl_shader_stage stage
;
2633 if (!_mesa_has_shader_subroutine(ctx
)) {
2634 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2638 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2639 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2643 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2647 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2648 sh
= shProg
->_LinkedShaders
[stage
];
2650 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2655 case GL_ACTIVE_SUBROUTINES
:
2656 values
[0] = sh
->NumSubroutineFunctions
;
2658 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2659 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2661 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2662 values
[0] = sh
->NumSubroutineUniformTypes
;
2664 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2668 GLenum resource_type
;
2669 struct gl_program_resource
*res
;
2671 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2672 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2673 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2675 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2680 values
[0] = max_len
;
2683 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2687 GLenum resource_type
;
2688 struct gl_program_resource
*res
;
2690 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2691 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2692 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2694 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2695 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2701 values
[0] = max_len
;
2705 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2712 find_compat_subroutine(struct gl_shader
*sh
, const struct glsl_type
*type
)
2716 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2717 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2718 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2719 if (fn
->types
[j
] == type
)
2727 _mesa_shader_init_subroutine_defaults(struct gl_shader
*sh
)
2731 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2732 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2738 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2739 val
= find_compat_subroutine(sh
, uni
->type
);
2741 for (j
= 0; j
< uni_count
; j
++)
2742 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2744 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2749 _mesa_shader_program_init_subroutine_defaults(struct gl_shader_program
*shProg
)
2756 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2757 if (!shProg
->_LinkedShaders
[i
])
2760 _mesa_shader_init_subroutine_defaults(shProg
->_LinkedShaders
[i
]);