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
);
952 sh
->CompileStatus
= GL_FALSE
;
954 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
963 _mesa_compile_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
969 /* If the user called glCompileShader without first calling
970 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
972 sh
->CompileStatus
= GL_FALSE
;
974 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
975 _mesa_log("GLSL source for %s shader %d:\n",
976 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
977 _mesa_log("%s\n", sh
->Source
);
980 /* this call will set the shader->CompileStatus field to indicate if
981 * compilation was successful.
983 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
985 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
986 _mesa_write_shader_to_file(sh
);
989 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
990 if (sh
->CompileStatus
) {
991 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
992 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
995 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
997 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
998 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
999 _mesa_log("%s\n", sh
->InfoLog
);
1004 if (!sh
->CompileStatus
) {
1005 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1006 _mesa_log("GLSL source for %s shader %d:\n",
1007 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1008 _mesa_log("%s\n", sh
->Source
);
1009 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1012 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1013 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1014 sh
->Name
, sh
->InfoLog
);
1021 * Link a program's shaders.
1024 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1029 /* From the ARB_transform_feedback2 specification:
1030 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1031 * the name of a program being used by one or more transform feedback
1032 * objects, even if the objects are not currently bound or are paused."
1034 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1035 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1036 "glLinkProgram(transform feedback is using the program)");
1040 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1042 _mesa_glsl_link_shader(ctx
, shProg
);
1044 if (shProg
->LinkStatus
== GL_FALSE
&&
1045 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1046 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1047 shProg
->Name
, shProg
->InfoLog
);
1054 printf("Link %u shaders in program %u: %s\n",
1055 shProg
->NumShaders
, shProg
->Name
,
1056 shProg
->LinkStatus
? "Success" : "Failed");
1058 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1059 printf(" shader %u, type 0x%x\n",
1060 shProg
->Shaders
[i
]->Name
,
1061 shProg
->Shaders
[i
]->Type
);
1068 * Print basic shader info (for debug).
1071 print_shader_info(const struct gl_shader_program
*shProg
)
1075 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1076 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1077 printf(" %s shader %u, checksum %u\n",
1078 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1079 shProg
->Shaders
[i
]->Name
,
1080 shProg
->Shaders
[i
]->SourceChecksum
);
1082 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1083 printf(" vert prog %u\n",
1084 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1085 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1086 printf(" frag prog %u\n",
1087 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1088 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1089 printf(" geom prog %u\n",
1090 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1091 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1092 printf(" tesc prog %u\n",
1093 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1094 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1095 printf(" tese prog %u\n",
1096 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1101 * Use the named shader program for subsequent glUniform calls
1104 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1107 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1108 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1109 "%s(program %u not linked)", caller
, shProg
->Name
);
1113 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1114 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1120 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1121 struct gl_shader_program
*shProg
,
1122 struct gl_pipeline_object
*shTarget
)
1124 struct gl_shader_program
**target
;
1126 target
= &shTarget
->CurrentProgram
[stage
];
1127 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1130 if (*target
!= shProg
) {
1131 /* Program is current, flush it */
1132 if (shTarget
== ctx
->_Shader
) {
1133 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1136 /* If the shader is also bound as the current rendering shader, unbind
1137 * it from that binding point as well. This ensures that the correct
1138 * semantics of glDeleteProgram are maintained.
1141 case MESA_SHADER_VERTEX
:
1142 case MESA_SHADER_TESS_CTRL
:
1143 case MESA_SHADER_TESS_EVAL
:
1144 case MESA_SHADER_GEOMETRY
:
1145 case MESA_SHADER_COMPUTE
:
1146 /* Empty for now. */
1148 case MESA_SHADER_FRAGMENT
:
1149 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1150 _mesa_reference_shader_program(ctx
,
1151 &ctx
->_Shader
->_CurrentFragmentProgram
,
1157 _mesa_reference_shader_program(ctx
, target
, shProg
);
1164 * Use the named shader program for subsequent rendering.
1167 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1170 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1171 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1172 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1174 _mesa_shader_program_init_subroutine_defaults(shProg
);
1175 if (ctx
->Driver
.UseProgram
)
1176 ctx
->Driver
.UseProgram(ctx
, shProg
);
1181 * Do validation of the given shader program.
1182 * \param errMsg returns error message if validation fails.
1183 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1186 validate_shader_program(const struct gl_shader_program
*shProg
,
1189 if (!shProg
->LinkStatus
) {
1193 /* From the GL spec, a program is invalid if any of these are true:
1195 any two active samplers in the current program object are of
1196 different types, but refer to the same texture image unit,
1198 any active sampler in the current program object refers to a texture
1199 image unit where fixed-function fragment processing accesses a
1200 texture target that does not match the sampler type, or
1202 the sum of the number of active samplers in the program and the
1203 number of texture image units enabled for fixed-function fragment
1204 processing exceeds the combined limit on the total number of texture
1205 image units allowed.
1209 * Check: any two active samplers in the current program object are of
1210 * different types, but refer to the same texture image unit,
1212 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1220 * Called via glValidateProgram()
1223 validate_program(struct gl_context
*ctx
, GLuint program
)
1225 struct gl_shader_program
*shProg
;
1226 char errMsg
[100] = "";
1228 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1233 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1234 if (!shProg
->Validated
) {
1235 /* update info log */
1236 if (shProg
->InfoLog
) {
1237 ralloc_free(shProg
->InfoLog
);
1239 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1246 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1248 GET_CURRENT_CONTEXT(ctx
);
1249 attach_shader(ctx
, program
, shader
);
1254 _mesa_AttachShader(GLuint program
, GLuint shader
)
1256 GET_CURRENT_CONTEXT(ctx
);
1257 attach_shader(ctx
, program
, shader
);
1262 _mesa_CompileShader(GLuint shaderObj
)
1264 GET_CURRENT_CONTEXT(ctx
);
1265 if (MESA_VERBOSE
& VERBOSE_API
)
1266 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1267 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1268 "glCompileShader"));
1273 _mesa_CreateShader(GLenum type
)
1275 GET_CURRENT_CONTEXT(ctx
);
1276 if (MESA_VERBOSE
& VERBOSE_API
)
1277 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1278 return create_shader(ctx
, type
);
1282 GLhandleARB GLAPIENTRY
1283 _mesa_CreateShaderObjectARB(GLenum type
)
1285 GET_CURRENT_CONTEXT(ctx
);
1286 return create_shader(ctx
, type
);
1291 _mesa_CreateProgram(void)
1293 GET_CURRENT_CONTEXT(ctx
);
1294 if (MESA_VERBOSE
& VERBOSE_API
)
1295 _mesa_debug(ctx
, "glCreateProgram\n");
1296 return create_shader_program(ctx
);
1300 GLhandleARB GLAPIENTRY
1301 _mesa_CreateProgramObjectARB(void)
1303 GET_CURRENT_CONTEXT(ctx
);
1304 return create_shader_program(ctx
);
1309 _mesa_DeleteObjectARB(GLhandleARB obj
)
1311 if (MESA_VERBOSE
& VERBOSE_API
) {
1312 GET_CURRENT_CONTEXT(ctx
);
1313 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1317 GET_CURRENT_CONTEXT(ctx
);
1318 FLUSH_VERTICES(ctx
, 0);
1319 if (is_program(ctx
, obj
)) {
1320 delete_shader_program(ctx
, obj
);
1322 else if (is_shader(ctx
, obj
)) {
1323 delete_shader(ctx
, obj
);
1333 _mesa_DeleteProgram(GLuint name
)
1336 GET_CURRENT_CONTEXT(ctx
);
1337 FLUSH_VERTICES(ctx
, 0);
1338 delete_shader_program(ctx
, name
);
1344 _mesa_DeleteShader(GLuint name
)
1347 GET_CURRENT_CONTEXT(ctx
);
1348 FLUSH_VERTICES(ctx
, 0);
1349 delete_shader(ctx
, name
);
1355 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1357 GET_CURRENT_CONTEXT(ctx
);
1358 detach_shader(ctx
, program
, shader
);
1363 _mesa_DetachShader(GLuint program
, GLuint shader
)
1365 GET_CURRENT_CONTEXT(ctx
);
1366 detach_shader(ctx
, program
, shader
);
1371 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1372 GLsizei
* count
, GLhandleARB
* obj
)
1374 GET_CURRENT_CONTEXT(ctx
);
1375 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1380 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1381 GLsizei
*count
, GLuint
*obj
)
1383 GET_CURRENT_CONTEXT(ctx
);
1384 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1389 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1390 GLcharARB
* infoLog
)
1392 GET_CURRENT_CONTEXT(ctx
);
1393 if (is_program(ctx
, object
)) {
1394 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1396 else if (is_shader(ctx
, object
)) {
1397 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1400 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1406 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1408 GET_CURRENT_CONTEXT(ctx
);
1409 /* Implement in terms of GetProgramiv, GetShaderiv */
1410 if (is_program(ctx
, object
)) {
1411 if (pname
== GL_OBJECT_TYPE_ARB
) {
1412 *params
= GL_PROGRAM_OBJECT_ARB
;
1415 get_programiv(ctx
, object
, pname
, params
);
1418 else if (is_shader(ctx
, object
)) {
1419 if (pname
== GL_OBJECT_TYPE_ARB
) {
1420 *params
= GL_SHADER_OBJECT_ARB
;
1423 get_shaderiv(ctx
, object
, pname
, params
);
1427 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1433 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1436 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1437 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1438 params
[0] = (GLfloat
) iparams
[0];
1443 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1445 GET_CURRENT_CONTEXT(ctx
);
1446 get_programiv(ctx
, program
, pname
, params
);
1451 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1453 GET_CURRENT_CONTEXT(ctx
);
1454 get_shaderiv(ctx
, shader
, pname
, params
);
1459 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1460 GLsizei
*length
, GLchar
*infoLog
)
1462 GET_CURRENT_CONTEXT(ctx
);
1463 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1468 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1469 GLsizei
*length
, GLchar
*infoLog
)
1471 GET_CURRENT_CONTEXT(ctx
);
1472 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1477 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1478 GLsizei
*length
, GLchar
*sourceOut
)
1480 GET_CURRENT_CONTEXT(ctx
);
1481 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1485 GLhandleARB GLAPIENTRY
1486 _mesa_GetHandleARB(GLenum pname
)
1488 GET_CURRENT_CONTEXT(ctx
);
1489 return get_handle(ctx
, pname
);
1493 GLboolean GLAPIENTRY
1494 _mesa_IsProgram(GLuint name
)
1496 GET_CURRENT_CONTEXT(ctx
);
1497 return is_program(ctx
, name
);
1501 GLboolean GLAPIENTRY
1502 _mesa_IsShader(GLuint name
)
1504 GET_CURRENT_CONTEXT(ctx
);
1505 return is_shader(ctx
, name
);
1510 _mesa_LinkProgram(GLuint programObj
)
1512 GET_CURRENT_CONTEXT(ctx
);
1513 if (MESA_VERBOSE
& VERBOSE_API
)
1514 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1515 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1519 #if defined(HAVE_SHA1)
1521 * Generate a SHA-1 hash value string for given source string.
1524 generate_sha1(const char *source
, char sha_str
[64])
1526 unsigned char sha
[20];
1527 _mesa_sha1_compute(source
, strlen(source
), sha
);
1528 _mesa_sha1_format(sha_str
, sha
);
1532 * Construct a full path for shader replacement functionality using
1535 * <path>/<stage prefix>_<CHECKSUM>.glsl
1538 construct_name(const gl_shader_stage stage
, const char *source
,
1539 const char *path
, char *name
, unsigned length
)
1542 static const char *types
[] = {
1543 "VS", "TC", "TE", "GS", "FS", "CS",
1546 generate_sha1(source
, sha
);
1547 _mesa_snprintf(name
, length
, "%s/%s_%s.glsl", path
, types
[stage
],
1552 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1555 dump_shader(const gl_shader_stage stage
, const char *source
)
1557 char name
[PATH_MAX
];
1558 static bool path_exists
= true;
1565 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1567 path_exists
= false;
1571 construct_name(stage
, source
, dump_path
, name
, PATH_MAX
);
1573 f
= fopen(name
, "w");
1578 GET_CURRENT_CONTEXT(ctx
);
1579 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1585 * Read shader source code from a file.
1586 * Useful for debugging to override an app's shader.
1589 read_shader(const gl_shader_stage stage
, const char *source
)
1591 char name
[PATH_MAX
];
1593 static bool path_exists
= true;
1594 int len
, shader_size
= 0;
1601 read_path
= getenv("MESA_SHADER_READ_PATH");
1603 path_exists
= false;
1607 construct_name(stage
, source
, read_path
, name
, PATH_MAX
);
1609 f
= fopen(name
, "r");
1613 /* allocate enough room for the entire shader */
1614 fseek(f
, 0, SEEK_END
);
1615 shader_size
= ftell(f
);
1617 assert(shader_size
);
1619 /* add one for terminating zero */
1622 buffer
= malloc(shader_size
);
1625 len
= fread(buffer
, 1, shader_size
, f
);
1632 #endif /* HAVE_SHA1 */
1635 * Called via glShaderSource() and glShaderSourceARB() API functions.
1636 * Basically, concatenate the source code strings into one long string
1637 * and pass it to _mesa_shader_source().
1640 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1641 const GLchar
* const * string
, const GLint
* length
)
1643 GET_CURRENT_CONTEXT(ctx
);
1645 GLsizei i
, totalLength
;
1647 struct gl_shader
*sh
;
1649 #if defined(HAVE_SHA1)
1650 GLcharARB
*replacement
;
1651 #endif /* HAVE_SHA1 */
1653 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1657 if (string
== NULL
) {
1658 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1663 * This array holds offsets of where the appropriate string ends, thus the
1664 * last element will be set to the total length of the source code.
1666 offsets
= malloc(count
* sizeof(GLint
));
1667 if (offsets
== NULL
) {
1668 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1672 for (i
= 0; i
< count
; i
++) {
1673 if (string
[i
] == NULL
) {
1674 free((GLvoid
*) offsets
);
1675 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1676 "glShaderSourceARB(null string)");
1679 if (length
== NULL
|| length
[i
] < 0)
1680 offsets
[i
] = strlen(string
[i
]);
1682 offsets
[i
] = length
[i
];
1683 /* accumulate string lengths */
1685 offsets
[i
] += offsets
[i
- 1];
1688 /* Total length of source string is sum off all strings plus two.
1689 * One extra byte for terminating zero, another extra byte to silence
1690 * valgrind warnings in the parser/grammer code.
1692 totalLength
= offsets
[count
- 1] + 2;
1693 source
= malloc(totalLength
* sizeof(GLcharARB
));
1694 if (source
== NULL
) {
1695 free((GLvoid
*) offsets
);
1696 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1700 for (i
= 0; i
< count
; i
++) {
1701 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1702 memcpy(source
+ start
, string
[i
],
1703 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1705 source
[totalLength
- 1] = '\0';
1706 source
[totalLength
- 2] = '\0';
1708 #if defined(HAVE_SHA1)
1709 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1710 * if corresponding entry found from MESA_SHADER_READ_PATH.
1712 dump_shader(sh
->Stage
, source
);
1714 replacement
= read_shader(sh
->Stage
, source
);
1717 source
= replacement
;
1719 #endif /* HAVE_SHA1 */
1721 shader_source(sh
, source
);
1728 _mesa_UseProgram(GLuint program
)
1730 GET_CURRENT_CONTEXT(ctx
);
1731 struct gl_shader_program
*shProg
;
1733 if (MESA_VERBOSE
& VERBOSE_API
)
1734 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1736 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1737 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1738 "glUseProgram(transform feedback active)");
1743 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1747 if (!shProg
->LinkStatus
) {
1748 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1749 "glUseProgram(program %u not linked)", program
);
1754 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1755 print_shader_info(shProg
);
1762 /* The ARB_separate_shader_object spec says:
1764 * "The executable code for an individual shader stage is taken from
1765 * the current program for that stage. If there is a current program
1766 * object established by UseProgram, that program is considered current
1767 * for all stages. Otherwise, if there is a bound program pipeline
1768 * object (section 2.14.PPO), the program bound to the appropriate
1769 * stage of the pipeline object is considered current."
1772 /* Attach shader state to the binding point */
1773 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1774 /* Update the program */
1775 _mesa_use_program(ctx
, shProg
);
1777 /* Must be done first: detach the progam */
1778 _mesa_use_program(ctx
, shProg
);
1779 /* Unattach shader_state binding point */
1780 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1781 /* If a pipeline was bound, rebind it */
1782 if (ctx
->Pipeline
.Current
) {
1783 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1790 _mesa_ValidateProgram(GLuint program
)
1792 GET_CURRENT_CONTEXT(ctx
);
1793 validate_program(ctx
, program
);
1798 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1801 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1802 GLint
* range
, GLint
* precision
)
1804 const struct gl_program_constants
*limits
;
1805 const struct gl_precision
*p
;
1806 GET_CURRENT_CONTEXT(ctx
);
1808 switch (shadertype
) {
1809 case GL_VERTEX_SHADER
:
1810 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1812 case GL_FRAGMENT_SHADER
:
1813 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1816 _mesa_error(ctx
, GL_INVALID_ENUM
,
1817 "glGetShaderPrecisionFormat(shadertype)");
1821 switch (precisiontype
) {
1823 p
= &limits
->LowFloat
;
1825 case GL_MEDIUM_FLOAT
:
1826 p
= &limits
->MediumFloat
;
1829 p
= &limits
->HighFloat
;
1832 p
= &limits
->LowInt
;
1835 p
= &limits
->MediumInt
;
1838 p
= &limits
->HighInt
;
1841 _mesa_error(ctx
, GL_INVALID_ENUM
,
1842 "glGetShaderPrecisionFormat(precisiontype)");
1846 range
[0] = p
->RangeMin
;
1847 range
[1] = p
->RangeMax
;
1848 precision
[0] = p
->Precision
;
1853 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1856 _mesa_ReleaseShaderCompiler(void)
1858 _mesa_destroy_shader_compiler_caches();
1863 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1866 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1867 const void* binary
, GLint length
)
1869 GET_CURRENT_CONTEXT(ctx
);
1871 (void) binaryformat
;
1874 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1875 * page 88 of the OpenGL 4.5 specs state:
1877 * "An INVALID_VALUE error is generated if count or length is negative.
1878 * An INVALID_ENUM error is generated if binaryformat is not a supported
1879 * format returned in SHADER_BINARY_FORMATS."
1881 if (n
< 0 || length
< 0) {
1882 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1886 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1891 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1892 GLenum
*binaryFormat
, GLvoid
*binary
)
1894 struct gl_shader_program
*shProg
;
1895 GLsizei length_dummy
;
1896 GET_CURRENT_CONTEXT(ctx
);
1899 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1903 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1907 /* The ARB_get_program_binary spec says:
1909 * "If <length> is NULL, then no length is returned."
1911 * Ensure that length always points to valid storage to avoid multiple NULL
1912 * pointer checks below.
1915 length
= &length_dummy
;
1918 /* The ARB_get_program_binary spec says:
1920 * "When a program object's LINK_STATUS is FALSE, its program binary
1921 * length is zero, and a call to GetProgramBinary will generate an
1922 * INVALID_OPERATION error.
1924 if (!shProg
->LinkStatus
) {
1925 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1926 "glGetProgramBinary(program %u not linked)",
1933 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1934 "glGetProgramBinary(driver supports zero binary formats)");
1936 (void) binaryFormat
;
1941 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1942 const GLvoid
*binary
, GLsizei length
)
1944 struct gl_shader_program
*shProg
;
1945 GET_CURRENT_CONTEXT(ctx
);
1947 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1951 (void) binaryFormat
;
1954 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
1956 * "If a negative number is provided where an argument of type sizei or
1957 * sizeiptr is specified, an INVALID_VALUE error is generated."
1960 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
1964 /* The ARB_get_program_binary spec says:
1966 * "<binaryFormat> and <binary> must be those returned by a previous
1967 * call to GetProgramBinary, and <length> must be the length of the
1968 * program binary as returned by GetProgramBinary or GetProgramiv with
1969 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
1970 * setting the LINK_STATUS of <program> to FALSE, if these conditions
1973 * Since any value of binaryFormat passed "is not one of those specified as
1974 * allowable for [this] command, an INVALID_ENUM error is generated."
1976 shProg
->LinkStatus
= GL_FALSE
;
1977 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
1982 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1984 struct gl_shader_program
*shProg
;
1985 GET_CURRENT_CONTEXT(ctx
);
1987 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1988 "glProgramParameteri");
1993 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1994 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
1995 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
1996 * even be in the dispatch table, so we shouldn't need to expclicitly
1999 * On desktop, we ignore the 3.0+ requirement because it is silly.
2002 /* The ARB_get_program_binary extension spec says:
2004 * "An INVALID_VALUE error is generated if the <value> argument to
2005 * ProgramParameteri is not TRUE or FALSE."
2007 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2011 /* No need to notify the driver. Any changes will actually take effect
2012 * the next time the shader is linked.
2014 * The ARB_get_program_binary extension spec says:
2016 * "To indicate that a program binary is likely to be retrieved,
2017 * ProgramParameteri should be called with <pname>
2018 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2019 * will not be in effect until the next time LinkProgram or
2020 * ProgramBinary has been called successfully."
2022 * The resloution of issue 9 in the extension spec also says:
2024 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2025 * to indicate to the GL implementation that this program will
2026 * likely be saved with GetProgramBinary at some point. This will
2027 * give the GL implementation the opportunity to track any state
2028 * changes made to the program before being saved such that when it
2029 * is loaded again a recompile can be avoided."
2031 shProg
->BinaryRetreivableHint
= value
;
2034 case GL_PROGRAM_SEPARABLE
:
2035 /* Spec imply that the behavior is the same as ARB_get_program_binary
2036 * Chapter 7.3 Program Objects
2038 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2041 shProg
->SeparateShader
= value
;
2045 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2046 _mesa_enum_to_string(pname
));
2051 _mesa_error(ctx
, GL_INVALID_VALUE
,
2052 "glProgramParameteri(pname=%s, value=%d): "
2053 "value must be 0 or 1.",
2054 _mesa_enum_to_string(pname
),
2060 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2061 struct gl_shader_program
*shProg
,
2062 struct gl_pipeline_object
*shTarget
)
2064 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2065 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2067 if (ctx
->Driver
.UseProgram
)
2068 ctx
->Driver
.UseProgram(ctx
, shProg
);
2073 * Copy program-specific data generated by linking from the gl_shader_program
2074 * object to a specific gl_program object.
2077 _mesa_copy_linked_program_data(gl_shader_stage type
,
2078 const struct gl_shader_program
*src
,
2079 struct gl_program
*dst
)
2082 case MESA_SHADER_VERTEX
:
2083 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2085 case MESA_SHADER_TESS_CTRL
: {
2086 struct gl_tess_ctrl_program
*dst_tcp
=
2087 (struct gl_tess_ctrl_program
*) dst
;
2088 dst_tcp
->VerticesOut
= src
->TessCtrl
.VerticesOut
;
2091 case MESA_SHADER_TESS_EVAL
: {
2092 struct gl_tess_eval_program
*dst_tep
=
2093 (struct gl_tess_eval_program
*) dst
;
2094 dst_tep
->PrimitiveMode
= src
->TessEval
.PrimitiveMode
;
2095 dst_tep
->Spacing
= src
->TessEval
.Spacing
;
2096 dst_tep
->VertexOrder
= src
->TessEval
.VertexOrder
;
2097 dst_tep
->PointMode
= src
->TessEval
.PointMode
;
2098 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2101 case MESA_SHADER_GEOMETRY
: {
2102 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
2103 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
2104 dst_gp
->VerticesOut
= src
->Geom
.VerticesOut
;
2105 dst_gp
->Invocations
= src
->Geom
.Invocations
;
2106 dst_gp
->InputType
= src
->Geom
.InputType
;
2107 dst_gp
->OutputType
= src
->Geom
.OutputType
;
2108 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2109 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;
2110 dst_gp
->UsesStreams
= src
->Geom
.UsesStreams
;
2113 case MESA_SHADER_FRAGMENT
: {
2114 struct gl_fragment_program
*dst_fp
= (struct gl_fragment_program
*) dst
;
2115 dst_fp
->FragDepthLayout
= src
->FragDepthLayout
;
2118 case MESA_SHADER_COMPUTE
: {
2119 struct gl_compute_program
*dst_cp
= (struct gl_compute_program
*) dst
;
2121 for (i
= 0; i
< 3; i
++)
2122 dst_cp
->LocalSize
[i
] = src
->Comp
.LocalSize
[i
];
2123 dst_cp
->SharedSize
= src
->Comp
.SharedSize
;
2132 * ARB_separate_shader_objects: Compile & Link Program
2135 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2136 const GLchar
* const *strings
)
2138 GET_CURRENT_CONTEXT(ctx
);
2140 const GLuint shader
= create_shader(ctx
, type
);
2144 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2145 * GL_INVALID_VALUE should be generated if count < 0
2148 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2153 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2155 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2156 _mesa_compile_shader(ctx
, sh
);
2158 program
= create_shader_program(ctx
);
2160 struct gl_shader_program
*shProg
;
2161 GLint compiled
= GL_FALSE
;
2163 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2165 shProg
->SeparateShader
= GL_TRUE
;
2167 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2169 attach_shader(ctx
, program
, shader
);
2170 _mesa_link_program(ctx
, shProg
);
2171 detach_shader(ctx
, program
, shader
);
2175 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2176 append
-error
-to
-info
-log
;
2177 shProg
->LinkStatus
= GL_FALSE
;
2182 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2185 delete_shader(ctx
, shader
);
2193 * For GL_ARB_tessellation_shader
2195 extern void GLAPIENTRY
2196 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2198 GET_CURRENT_CONTEXT(ctx
);
2200 if (!_mesa_has_tessellation(ctx
)) {
2201 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2205 if (pname
!= GL_PATCH_VERTICES
) {
2206 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2210 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2211 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2215 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2219 extern void GLAPIENTRY
2220 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2222 GET_CURRENT_CONTEXT(ctx
);
2224 if (!_mesa_has_tessellation(ctx
)) {
2225 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2230 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2231 FLUSH_VERTICES(ctx
, 0);
2232 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2233 4 * sizeof(GLfloat
));
2234 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2236 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2237 FLUSH_VERTICES(ctx
, 0);
2238 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2239 2 * sizeof(GLfloat
));
2240 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2243 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2249 * ARB_shader_subroutine
2252 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2255 GET_CURRENT_CONTEXT(ctx
);
2256 const char *api_name
= "glGetSubroutineUniformLocation";
2257 struct gl_shader_program
*shProg
;
2258 GLenum resource_type
;
2259 gl_shader_stage stage
;
2261 if (!_mesa_has_shader_subroutine(ctx
)) {
2262 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2266 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2267 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2271 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2275 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2276 if (!shProg
->_LinkedShaders
[stage
]) {
2277 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2281 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2282 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2286 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2289 GET_CURRENT_CONTEXT(ctx
);
2290 const char *api_name
= "glGetSubroutineIndex";
2291 struct gl_shader_program
*shProg
;
2292 struct gl_program_resource
*res
;
2293 GLenum resource_type
;
2294 gl_shader_stage stage
;
2296 if (!_mesa_has_shader_subroutine(ctx
)) {
2297 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2301 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2302 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2306 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2310 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2311 if (!shProg
->_LinkedShaders
[stage
]) {
2312 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2316 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2317 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2319 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2323 return _mesa_program_resource_index(shProg
, res
);
2328 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2329 GLuint index
, GLenum pname
, GLint
*values
)
2331 GET_CURRENT_CONTEXT(ctx
);
2332 const char *api_name
= "glGetActiveSubroutineUniformiv";
2333 struct gl_shader_program
*shProg
;
2334 struct gl_shader
*sh
;
2335 gl_shader_stage stage
;
2336 struct gl_program_resource
*res
;
2337 const struct gl_uniform_storage
*uni
;
2338 GLenum resource_type
;
2341 if (!_mesa_has_shader_subroutine(ctx
)) {
2342 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2346 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2347 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2351 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2355 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2356 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2358 sh
= shProg
->_LinkedShaders
[stage
];
2360 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2365 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2366 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2369 values
[0] = uni
->num_compatible_subroutines
;
2373 case GL_COMPATIBLE_SUBROUTINES
: {
2374 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2378 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2379 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2380 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2381 if (fn
->types
[j
] == uni
->type
) {
2382 values
[count
++] = i
;
2390 case GL_UNIFORM_SIZE
:
2391 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2394 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2397 case GL_UNIFORM_NAME_LENGTH
:
2398 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2400 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2401 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);;
2405 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2412 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2413 GLuint index
, GLsizei bufsize
,
2414 GLsizei
*length
, GLchar
*name
)
2416 GET_CURRENT_CONTEXT(ctx
);
2417 const char *api_name
= "glGetActiveSubroutineUniformName";
2418 struct gl_shader_program
*shProg
;
2419 GLenum resource_type
;
2420 gl_shader_stage stage
;
2422 if (!_mesa_has_shader_subroutine(ctx
)) {
2423 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2427 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2428 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2432 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2436 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2437 if (!shProg
->_LinkedShaders
[stage
]) {
2438 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2442 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2443 /* get program resource name */
2444 _mesa_get_program_resource_name(shProg
, resource_type
,
2446 length
, name
, api_name
);
2451 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2452 GLuint index
, GLsizei bufsize
,
2453 GLsizei
*length
, GLchar
*name
)
2455 GET_CURRENT_CONTEXT(ctx
);
2456 const char *api_name
= "glGetActiveSubroutineName";
2457 struct gl_shader_program
*shProg
;
2458 GLenum resource_type
;
2459 gl_shader_stage stage
;
2461 if (!_mesa_has_shader_subroutine(ctx
)) {
2462 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2466 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2467 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2471 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2475 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2476 if (!shProg
->_LinkedShaders
[stage
]) {
2477 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2480 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2481 _mesa_get_program_resource_name(shProg
, resource_type
,
2483 length
, name
, api_name
);
2488 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2489 const GLuint
*indices
)
2491 GET_CURRENT_CONTEXT(ctx
);
2492 const char *api_name
= "glUniformSubroutinesuiv";
2493 struct gl_shader_program
*shProg
;
2494 struct gl_shader
*sh
;
2495 gl_shader_stage stage
;
2498 if (!_mesa_has_shader_subroutine(ctx
)) {
2499 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2503 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2504 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2508 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2509 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2511 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2515 sh
= shProg
->_LinkedShaders
[stage
];
2517 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2521 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2522 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2528 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2534 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2537 for (j
= i
; j
< i
+ uni_count
; j
++) {
2538 struct gl_subroutine_function
*subfn
;
2539 if (indices
[j
] >= sh
->NumSubroutineFunctions
) {
2540 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2544 subfn
= &sh
->SubroutineFunctions
[indices
[j
]];
2545 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2546 if (subfn
->types
[k
] == uni
->type
)
2549 if (k
== subfn
->num_compat_types
) {
2550 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2557 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2560 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2566 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2568 memcpy(&uni
->storage
[0], &indices
[i
],
2569 sizeof(GLuint
) * uni_count
);
2571 uni
->initialized
= true;
2572 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2579 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2582 GET_CURRENT_CONTEXT(ctx
);
2583 const char *api_name
= "glGetUniformSubroutineuiv";
2584 struct gl_shader_program
*shProg
;
2585 struct gl_shader
*sh
;
2586 gl_shader_stage stage
;
2588 if (!_mesa_has_shader_subroutine(ctx
)) {
2589 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2593 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2594 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2598 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2599 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2601 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2605 sh
= shProg
->_LinkedShaders
[stage
];
2607 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2611 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2612 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2617 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[location
];
2618 int offset
= location
- uni
->opaque
[stage
].index
;
2619 memcpy(params
, &uni
->storage
[offset
],
2626 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2627 GLenum pname
, GLint
*values
)
2629 GET_CURRENT_CONTEXT(ctx
);
2630 const char *api_name
= "glGetProgramStageiv";
2631 struct gl_shader_program
*shProg
;
2632 struct gl_shader
*sh
;
2633 gl_shader_stage stage
;
2635 if (!_mesa_has_shader_subroutine(ctx
)) {
2636 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2640 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2641 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2645 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2649 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2650 sh
= shProg
->_LinkedShaders
[stage
];
2652 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2657 case GL_ACTIVE_SUBROUTINES
:
2658 values
[0] = sh
->NumSubroutineFunctions
;
2660 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2661 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2663 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2664 values
[0] = sh
->NumSubroutineUniformTypes
;
2666 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2670 GLenum resource_type
;
2671 struct gl_program_resource
*res
;
2673 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2674 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2675 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2677 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2682 values
[0] = max_len
;
2685 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2689 GLenum resource_type
;
2690 struct gl_program_resource
*res
;
2692 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2693 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2694 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2696 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2697 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2703 values
[0] = max_len
;
2707 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2714 find_compat_subroutine(struct gl_shader
*sh
, const struct glsl_type
*type
)
2718 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2719 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2720 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2721 if (fn
->types
[j
] == type
)
2729 _mesa_shader_init_subroutine_defaults(struct gl_shader
*sh
)
2733 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2734 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2740 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2741 val
= find_compat_subroutine(sh
, uni
->type
);
2743 for (j
= 0; j
< uni_count
; j
++)
2744 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2745 uni
->initialized
= true;
2746 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2751 _mesa_shader_program_init_subroutine_defaults(struct gl_shader_program
*shProg
)
2758 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2759 if (!shProg
->_LinkedShaders
[i
])
2762 _mesa_shader_init_subroutine_defaults(shProg
->_LinkedShaders
[i
]);