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 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 link_program(struct gl_context
*ctx
, GLuint program
)
1026 struct gl_shader_program
*shProg
;
1028 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glLinkProgram");
1032 /* From the ARB_transform_feedback2 specification:
1033 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1034 * the name of a program being used by one or more transform feedback
1035 * objects, even if the objects are not currently bound or are paused."
1037 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1038 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1039 "glLinkProgram(transform feedback is using the program)");
1043 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1045 _mesa_glsl_link_shader(ctx
, shProg
);
1047 if (shProg
->LinkStatus
== GL_FALSE
&&
1048 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1049 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1050 shProg
->Name
, shProg
->InfoLog
);
1057 printf("Link %u shaders in program %u: %s\n",
1058 shProg
->NumShaders
, shProg
->Name
,
1059 shProg
->LinkStatus
? "Success" : "Failed");
1061 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1062 printf(" shader %u, type 0x%x\n",
1063 shProg
->Shaders
[i
]->Name
,
1064 shProg
->Shaders
[i
]->Type
);
1071 * Print basic shader info (for debug).
1074 print_shader_info(const struct gl_shader_program
*shProg
)
1078 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1079 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1080 printf(" %s shader %u, checksum %u\n",
1081 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1082 shProg
->Shaders
[i
]->Name
,
1083 shProg
->Shaders
[i
]->SourceChecksum
);
1085 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1086 printf(" vert prog %u\n",
1087 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1088 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1089 printf(" frag prog %u\n",
1090 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1091 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1092 printf(" geom prog %u\n",
1093 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1094 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1095 printf(" tesc prog %u\n",
1096 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1097 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1098 printf(" tese prog %u\n",
1099 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1104 * Use the named shader program for subsequent glUniform calls
1107 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1110 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1111 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1112 "%s(program %u not linked)", caller
, shProg
->Name
);
1116 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1117 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1123 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1124 struct gl_shader_program
*shProg
,
1125 struct gl_pipeline_object
*shTarget
)
1127 struct gl_shader_program
**target
;
1129 target
= &shTarget
->CurrentProgram
[stage
];
1130 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1133 if (*target
!= shProg
) {
1134 /* Program is current, flush it */
1135 if (shTarget
== ctx
->_Shader
) {
1136 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1139 /* If the shader is also bound as the current rendering shader, unbind
1140 * it from that binding point as well. This ensures that the correct
1141 * semantics of glDeleteProgram are maintained.
1144 case MESA_SHADER_VERTEX
:
1145 case MESA_SHADER_TESS_CTRL
:
1146 case MESA_SHADER_TESS_EVAL
:
1147 case MESA_SHADER_GEOMETRY
:
1148 case MESA_SHADER_COMPUTE
:
1149 /* Empty for now. */
1151 case MESA_SHADER_FRAGMENT
:
1152 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1153 _mesa_reference_shader_program(ctx
,
1154 &ctx
->_Shader
->_CurrentFragmentProgram
,
1160 _mesa_reference_shader_program(ctx
, target
, shProg
);
1167 * Use the named shader program for subsequent rendering.
1170 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1173 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1174 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1175 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1177 _mesa_shader_program_init_subroutine_defaults(shProg
);
1178 if (ctx
->Driver
.UseProgram
)
1179 ctx
->Driver
.UseProgram(ctx
, shProg
);
1184 * Do validation of the given shader program.
1185 * \param errMsg returns error message if validation fails.
1186 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1189 validate_shader_program(const struct gl_shader_program
*shProg
,
1192 if (!shProg
->LinkStatus
) {
1196 /* From the GL spec, a program is invalid if any of these are true:
1198 any two active samplers in the current program object are of
1199 different types, but refer to the same texture image unit,
1201 any active sampler in the current program object refers to a texture
1202 image unit where fixed-function fragment processing accesses a
1203 texture target that does not match the sampler type, or
1205 the sum of the number of active samplers in the program and the
1206 number of texture image units enabled for fixed-function fragment
1207 processing exceeds the combined limit on the total number of texture
1208 image units allowed.
1212 * Check: any two active samplers in the current program object are of
1213 * different types, but refer to the same texture image unit,
1215 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1223 * Called via glValidateProgram()
1226 validate_program(struct gl_context
*ctx
, GLuint program
)
1228 struct gl_shader_program
*shProg
;
1229 char errMsg
[100] = "";
1231 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1236 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1237 if (!shProg
->Validated
) {
1238 /* update info log */
1239 if (shProg
->InfoLog
) {
1240 ralloc_free(shProg
->InfoLog
);
1242 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1249 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1251 GET_CURRENT_CONTEXT(ctx
);
1252 attach_shader(ctx
, program
, shader
);
1257 _mesa_AttachShader(GLuint program
, GLuint shader
)
1259 GET_CURRENT_CONTEXT(ctx
);
1260 attach_shader(ctx
, program
, shader
);
1265 _mesa_CompileShader(GLuint shaderObj
)
1267 GET_CURRENT_CONTEXT(ctx
);
1268 if (MESA_VERBOSE
& VERBOSE_API
)
1269 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1271 _mesa_lookup_shader_err(ctx
, shaderObj
, "glCompileShader"));
1276 _mesa_CreateShader(GLenum type
)
1278 GET_CURRENT_CONTEXT(ctx
);
1279 if (MESA_VERBOSE
& VERBOSE_API
)
1280 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1281 return create_shader(ctx
, type
);
1285 GLhandleARB GLAPIENTRY
1286 _mesa_CreateShaderObjectARB(GLenum type
)
1288 GET_CURRENT_CONTEXT(ctx
);
1289 return create_shader(ctx
, type
);
1294 _mesa_CreateProgram(void)
1296 GET_CURRENT_CONTEXT(ctx
);
1297 if (MESA_VERBOSE
& VERBOSE_API
)
1298 _mesa_debug(ctx
, "glCreateProgram\n");
1299 return create_shader_program(ctx
);
1303 GLhandleARB GLAPIENTRY
1304 _mesa_CreateProgramObjectARB(void)
1306 GET_CURRENT_CONTEXT(ctx
);
1307 return create_shader_program(ctx
);
1312 _mesa_DeleteObjectARB(GLhandleARB obj
)
1314 if (MESA_VERBOSE
& VERBOSE_API
) {
1315 GET_CURRENT_CONTEXT(ctx
);
1316 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1320 GET_CURRENT_CONTEXT(ctx
);
1321 FLUSH_VERTICES(ctx
, 0);
1322 if (is_program(ctx
, obj
)) {
1323 delete_shader_program(ctx
, obj
);
1325 else if (is_shader(ctx
, obj
)) {
1326 delete_shader(ctx
, obj
);
1336 _mesa_DeleteProgram(GLuint name
)
1339 GET_CURRENT_CONTEXT(ctx
);
1340 FLUSH_VERTICES(ctx
, 0);
1341 delete_shader_program(ctx
, name
);
1347 _mesa_DeleteShader(GLuint name
)
1350 GET_CURRENT_CONTEXT(ctx
);
1351 FLUSH_VERTICES(ctx
, 0);
1352 delete_shader(ctx
, name
);
1358 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1360 GET_CURRENT_CONTEXT(ctx
);
1361 detach_shader(ctx
, program
, shader
);
1366 _mesa_DetachShader(GLuint program
, GLuint shader
)
1368 GET_CURRENT_CONTEXT(ctx
);
1369 detach_shader(ctx
, program
, shader
);
1374 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1375 GLsizei
* count
, GLhandleARB
* obj
)
1377 GET_CURRENT_CONTEXT(ctx
);
1378 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1383 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1384 GLsizei
*count
, GLuint
*obj
)
1386 GET_CURRENT_CONTEXT(ctx
);
1387 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1392 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1393 GLcharARB
* infoLog
)
1395 GET_CURRENT_CONTEXT(ctx
);
1396 if (is_program(ctx
, object
)) {
1397 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1399 else if (is_shader(ctx
, object
)) {
1400 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1403 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1409 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1411 GET_CURRENT_CONTEXT(ctx
);
1412 /* Implement in terms of GetProgramiv, GetShaderiv */
1413 if (is_program(ctx
, object
)) {
1414 if (pname
== GL_OBJECT_TYPE_ARB
) {
1415 *params
= GL_PROGRAM_OBJECT_ARB
;
1418 get_programiv(ctx
, object
, pname
, params
);
1421 else if (is_shader(ctx
, object
)) {
1422 if (pname
== GL_OBJECT_TYPE_ARB
) {
1423 *params
= GL_SHADER_OBJECT_ARB
;
1426 get_shaderiv(ctx
, object
, pname
, params
);
1430 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1436 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1439 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1440 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1441 params
[0] = (GLfloat
) iparams
[0];
1446 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1448 GET_CURRENT_CONTEXT(ctx
);
1449 get_programiv(ctx
, program
, pname
, params
);
1454 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1456 GET_CURRENT_CONTEXT(ctx
);
1457 get_shaderiv(ctx
, shader
, pname
, params
);
1462 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1463 GLsizei
*length
, GLchar
*infoLog
)
1465 GET_CURRENT_CONTEXT(ctx
);
1466 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1471 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1472 GLsizei
*length
, GLchar
*infoLog
)
1474 GET_CURRENT_CONTEXT(ctx
);
1475 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1480 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1481 GLsizei
*length
, GLchar
*sourceOut
)
1483 GET_CURRENT_CONTEXT(ctx
);
1484 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1488 GLhandleARB GLAPIENTRY
1489 _mesa_GetHandleARB(GLenum pname
)
1491 GET_CURRENT_CONTEXT(ctx
);
1492 return get_handle(ctx
, pname
);
1496 GLboolean GLAPIENTRY
1497 _mesa_IsProgram(GLuint name
)
1499 GET_CURRENT_CONTEXT(ctx
);
1500 return is_program(ctx
, name
);
1504 GLboolean GLAPIENTRY
1505 _mesa_IsShader(GLuint name
)
1507 GET_CURRENT_CONTEXT(ctx
);
1508 return is_shader(ctx
, name
);
1513 _mesa_LinkProgram(GLuint programObj
)
1515 GET_CURRENT_CONTEXT(ctx
);
1516 if (MESA_VERBOSE
& VERBOSE_API
)
1517 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1518 link_program(ctx
, programObj
);
1521 #if defined(HAVE_SHA1)
1523 * Generate a SHA-1 hash value string for given source string.
1526 generate_sha1(const char *source
, char sha_str
[64])
1528 unsigned char sha
[20];
1529 _mesa_sha1_compute(source
, strlen(source
), sha
);
1530 _mesa_sha1_format(sha_str
, sha
);
1534 * Construct a full path for shader replacement functionality using
1537 * <path>/<stage prefix>_<CHECKSUM>.glsl
1540 construct_name(const gl_shader_stage stage
, const char *source
,
1541 const char *path
, char *name
, unsigned length
)
1544 static const char *types
[] = {
1545 "VS", "TC", "TE", "GS", "FS", "CS",
1548 generate_sha1(source
, sha
);
1549 _mesa_snprintf(name
, length
, "%s/%s_%s.glsl", path
, types
[stage
],
1554 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1557 dump_shader(const gl_shader_stage stage
, const char *source
)
1559 char name
[PATH_MAX
];
1560 static bool path_exists
= true;
1567 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1569 path_exists
= false;
1573 construct_name(stage
, source
, dump_path
, name
, PATH_MAX
);
1575 f
= fopen(name
, "w");
1580 GET_CURRENT_CONTEXT(ctx
);
1581 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1587 * Read shader source code from a file.
1588 * Useful for debugging to override an app's shader.
1591 read_shader(const gl_shader_stage stage
, const char *source
)
1593 char name
[PATH_MAX
];
1595 static bool path_exists
= true;
1596 int len
, shader_size
= 0;
1603 read_path
= getenv("MESA_SHADER_READ_PATH");
1605 path_exists
= false;
1609 construct_name(stage
, source
, read_path
, name
, PATH_MAX
);
1611 f
= fopen(name
, "r");
1615 /* allocate enough room for the entire shader */
1616 fseek(f
, 0, SEEK_END
);
1617 shader_size
= ftell(f
);
1619 assert(shader_size
);
1621 /* add one for terminating zero */
1624 buffer
= malloc(shader_size
);
1627 len
= fread(buffer
, 1, shader_size
, f
);
1634 #endif /* HAVE_SHA1 */
1637 * Called via glShaderSource() and glShaderSourceARB() API functions.
1638 * Basically, concatenate the source code strings into one long string
1639 * and pass it to _mesa_shader_source().
1642 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1643 const GLchar
* const * string
, const GLint
* length
)
1645 GET_CURRENT_CONTEXT(ctx
);
1647 GLsizei i
, totalLength
;
1649 struct gl_shader
*sh
;
1651 #if defined(HAVE_SHA1)
1652 GLcharARB
*replacement
;
1653 #endif /* HAVE_SHA1 */
1655 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1659 if (string
== NULL
) {
1660 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1665 * This array holds offsets of where the appropriate string ends, thus the
1666 * last element will be set to the total length of the source code.
1668 offsets
= malloc(count
* sizeof(GLint
));
1669 if (offsets
== NULL
) {
1670 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1674 for (i
= 0; i
< count
; i
++) {
1675 if (string
[i
] == NULL
) {
1676 free((GLvoid
*) offsets
);
1677 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1678 "glShaderSourceARB(null string)");
1681 if (length
== NULL
|| length
[i
] < 0)
1682 offsets
[i
] = strlen(string
[i
]);
1684 offsets
[i
] = length
[i
];
1685 /* accumulate string lengths */
1687 offsets
[i
] += offsets
[i
- 1];
1690 /* Total length of source string is sum off all strings plus two.
1691 * One extra byte for terminating zero, another extra byte to silence
1692 * valgrind warnings in the parser/grammer code.
1694 totalLength
= offsets
[count
- 1] + 2;
1695 source
= malloc(totalLength
* sizeof(GLcharARB
));
1696 if (source
== NULL
) {
1697 free((GLvoid
*) offsets
);
1698 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1702 for (i
= 0; i
< count
; i
++) {
1703 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1704 memcpy(source
+ start
, string
[i
],
1705 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1707 source
[totalLength
- 1] = '\0';
1708 source
[totalLength
- 2] = '\0';
1710 #if defined(HAVE_SHA1)
1711 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1712 * if corresponding entry found from MESA_SHADER_READ_PATH.
1714 dump_shader(sh
->Stage
, source
);
1716 replacement
= read_shader(sh
->Stage
, source
);
1719 source
= replacement
;
1721 #endif /* HAVE_SHA1 */
1723 shader_source(sh
, source
);
1730 _mesa_UseProgram(GLuint program
)
1732 GET_CURRENT_CONTEXT(ctx
);
1733 struct gl_shader_program
*shProg
;
1735 if (MESA_VERBOSE
& VERBOSE_API
)
1736 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1738 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1739 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1740 "glUseProgram(transform feedback active)");
1745 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1749 if (!shProg
->LinkStatus
) {
1750 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1751 "glUseProgram(program %u not linked)", program
);
1756 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1757 print_shader_info(shProg
);
1764 /* The ARB_separate_shader_object spec says:
1766 * "The executable code for an individual shader stage is taken from
1767 * the current program for that stage. If there is a current program
1768 * object established by UseProgram, that program is considered current
1769 * for all stages. Otherwise, if there is a bound program pipeline
1770 * object (section 2.14.PPO), the program bound to the appropriate
1771 * stage of the pipeline object is considered current."
1774 /* Attach shader state to the binding point */
1775 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1776 /* Update the program */
1777 _mesa_use_program(ctx
, shProg
);
1779 /* Must be done first: detach the progam */
1780 _mesa_use_program(ctx
, shProg
);
1781 /* Unattach shader_state binding point */
1782 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1783 /* If a pipeline was bound, rebind it */
1784 if (ctx
->Pipeline
.Current
) {
1785 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1792 _mesa_ValidateProgram(GLuint program
)
1794 GET_CURRENT_CONTEXT(ctx
);
1795 validate_program(ctx
, program
);
1800 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1803 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1804 GLint
* range
, GLint
* precision
)
1806 const struct gl_program_constants
*limits
;
1807 const struct gl_precision
*p
;
1808 GET_CURRENT_CONTEXT(ctx
);
1810 switch (shadertype
) {
1811 case GL_VERTEX_SHADER
:
1812 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1814 case GL_FRAGMENT_SHADER
:
1815 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1818 _mesa_error(ctx
, GL_INVALID_ENUM
,
1819 "glGetShaderPrecisionFormat(shadertype)");
1823 switch (precisiontype
) {
1825 p
= &limits
->LowFloat
;
1827 case GL_MEDIUM_FLOAT
:
1828 p
= &limits
->MediumFloat
;
1831 p
= &limits
->HighFloat
;
1834 p
= &limits
->LowInt
;
1837 p
= &limits
->MediumInt
;
1840 p
= &limits
->HighInt
;
1843 _mesa_error(ctx
, GL_INVALID_ENUM
,
1844 "glGetShaderPrecisionFormat(precisiontype)");
1848 range
[0] = p
->RangeMin
;
1849 range
[1] = p
->RangeMax
;
1850 precision
[0] = p
->Precision
;
1855 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1858 _mesa_ReleaseShaderCompiler(void)
1860 _mesa_destroy_shader_compiler_caches();
1865 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1868 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1869 const void* binary
, GLint length
)
1871 GET_CURRENT_CONTEXT(ctx
);
1873 (void) binaryformat
;
1876 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1877 * page 88 of the OpenGL 4.5 specs state:
1879 * "An INVALID_VALUE error is generated if count or length is negative.
1880 * An INVALID_ENUM error is generated if binaryformat is not a supported
1881 * format returned in SHADER_BINARY_FORMATS."
1883 if (n
< 0 || length
< 0) {
1884 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1888 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1893 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1894 GLenum
*binaryFormat
, GLvoid
*binary
)
1896 struct gl_shader_program
*shProg
;
1897 GLsizei length_dummy
;
1898 GET_CURRENT_CONTEXT(ctx
);
1901 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1905 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1909 /* The ARB_get_program_binary spec says:
1911 * "If <length> is NULL, then no length is returned."
1913 * Ensure that length always points to valid storage to avoid multiple NULL
1914 * pointer checks below.
1917 length
= &length_dummy
;
1920 /* The ARB_get_program_binary spec says:
1922 * "When a program object's LINK_STATUS is FALSE, its program binary
1923 * length is zero, and a call to GetProgramBinary will generate an
1924 * INVALID_OPERATION error.
1926 if (!shProg
->LinkStatus
) {
1927 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1928 "glGetProgramBinary(program %u not linked)",
1935 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1936 "glGetProgramBinary(driver supports zero binary formats)");
1938 (void) binaryFormat
;
1943 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1944 const GLvoid
*binary
, GLsizei length
)
1946 struct gl_shader_program
*shProg
;
1947 GET_CURRENT_CONTEXT(ctx
);
1949 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1953 (void) binaryFormat
;
1956 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
1958 * "If a negative number is provided where an argument of type sizei or
1959 * sizeiptr is specified, an INVALID_VALUE error is generated."
1962 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
1966 /* The ARB_get_program_binary spec says:
1968 * "<binaryFormat> and <binary> must be those returned by a previous
1969 * call to GetProgramBinary, and <length> must be the length of the
1970 * program binary as returned by GetProgramBinary or GetProgramiv with
1971 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
1972 * setting the LINK_STATUS of <program> to FALSE, if these conditions
1975 * Since any value of binaryFormat passed "is not one of those specified as
1976 * allowable for [this] command, an INVALID_ENUM error is generated."
1978 shProg
->LinkStatus
= GL_FALSE
;
1979 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
1984 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1986 struct gl_shader_program
*shProg
;
1987 GET_CURRENT_CONTEXT(ctx
);
1989 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1990 "glProgramParameteri");
1995 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1996 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
1997 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
1998 * even be in the dispatch table, so we shouldn't need to expclicitly
2001 * On desktop, we ignore the 3.0+ requirement because it is silly.
2004 /* The ARB_get_program_binary extension spec says:
2006 * "An INVALID_VALUE error is generated if the <value> argument to
2007 * ProgramParameteri is not TRUE or FALSE."
2009 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2013 /* No need to notify the driver. Any changes will actually take effect
2014 * the next time the shader is linked.
2016 * The ARB_get_program_binary extension spec says:
2018 * "To indicate that a program binary is likely to be retrieved,
2019 * ProgramParameteri should be called with <pname>
2020 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2021 * will not be in effect until the next time LinkProgram or
2022 * ProgramBinary has been called successfully."
2024 * The resloution of issue 9 in the extension spec also says:
2026 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2027 * to indicate to the GL implementation that this program will
2028 * likely be saved with GetProgramBinary at some point. This will
2029 * give the GL implementation the opportunity to track any state
2030 * changes made to the program before being saved such that when it
2031 * is loaded again a recompile can be avoided."
2033 shProg
->BinaryRetreivableHint
= value
;
2036 case GL_PROGRAM_SEPARABLE
:
2037 /* Spec imply that the behavior is the same as ARB_get_program_binary
2038 * Chapter 7.3 Program Objects
2040 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2043 shProg
->SeparateShader
= value
;
2047 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2048 _mesa_enum_to_string(pname
));
2053 _mesa_error(ctx
, GL_INVALID_VALUE
,
2054 "glProgramParameteri(pname=%s, value=%d): "
2055 "value must be 0 or 1.",
2056 _mesa_enum_to_string(pname
),
2062 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2063 struct gl_shader_program
*shProg
,
2064 struct gl_pipeline_object
*shTarget
)
2066 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2067 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2069 if (ctx
->Driver
.UseProgram
)
2070 ctx
->Driver
.UseProgram(ctx
, shProg
);
2075 * Copy program-specific data generated by linking from the gl_shader_program
2076 * object to a specific gl_program object.
2079 _mesa_copy_linked_program_data(gl_shader_stage type
,
2080 const struct gl_shader_program
*src
,
2081 struct gl_program
*dst
)
2084 case MESA_SHADER_VERTEX
:
2085 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2087 case MESA_SHADER_TESS_CTRL
: {
2088 struct gl_tess_ctrl_program
*dst_tcp
=
2089 (struct gl_tess_ctrl_program
*) dst
;
2090 dst_tcp
->VerticesOut
= src
->TessCtrl
.VerticesOut
;
2093 case MESA_SHADER_TESS_EVAL
: {
2094 struct gl_tess_eval_program
*dst_tep
=
2095 (struct gl_tess_eval_program
*) dst
;
2096 dst_tep
->PrimitiveMode
= src
->TessEval
.PrimitiveMode
;
2097 dst_tep
->Spacing
= src
->TessEval
.Spacing
;
2098 dst_tep
->VertexOrder
= src
->TessEval
.VertexOrder
;
2099 dst_tep
->PointMode
= src
->TessEval
.PointMode
;
2100 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2103 case MESA_SHADER_GEOMETRY
: {
2104 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
2105 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
2106 dst_gp
->VerticesOut
= src
->Geom
.VerticesOut
;
2107 dst_gp
->Invocations
= src
->Geom
.Invocations
;
2108 dst_gp
->InputType
= src
->Geom
.InputType
;
2109 dst_gp
->OutputType
= src
->Geom
.OutputType
;
2110 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2111 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;
2112 dst_gp
->UsesStreams
= src
->Geom
.UsesStreams
;
2115 case MESA_SHADER_FRAGMENT
: {
2116 struct gl_fragment_program
*dst_fp
= (struct gl_fragment_program
*) dst
;
2117 dst_fp
->FragDepthLayout
= src
->FragDepthLayout
;
2120 case MESA_SHADER_COMPUTE
: {
2121 struct gl_compute_program
*dst_cp
= (struct gl_compute_program
*) dst
;
2123 for (i
= 0; i
< 3; i
++)
2124 dst_cp
->LocalSize
[i
] = src
->Comp
.LocalSize
[i
];
2125 dst_cp
->SharedSize
= src
->Comp
.SharedSize
;
2134 * ARB_separate_shader_objects: Compile & Link Program
2137 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2138 const GLchar
* const *strings
)
2140 GET_CURRENT_CONTEXT(ctx
);
2142 const GLuint shader
= create_shader(ctx
, type
);
2146 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2147 * GL_INVALID_VALUE should be generated if count < 0
2150 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2155 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2157 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2158 compile_shader(ctx
, sh
);
2160 program
= create_shader_program(ctx
);
2162 struct gl_shader_program
*shProg
;
2163 GLint compiled
= GL_FALSE
;
2165 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2167 shProg
->SeparateShader
= GL_TRUE
;
2169 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2171 attach_shader(ctx
, program
, shader
);
2172 link_program(ctx
, program
);
2173 detach_shader(ctx
, program
, shader
);
2177 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2178 append
-error
-to
-info
-log
;
2179 shProg
->LinkStatus
= GL_FALSE
;
2184 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2187 delete_shader(ctx
, shader
);
2195 * For GL_ARB_tessellation_shader
2197 extern void GLAPIENTRY
2198 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2200 GET_CURRENT_CONTEXT(ctx
);
2202 if (!_mesa_has_tessellation(ctx
)) {
2203 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2207 if (pname
!= GL_PATCH_VERTICES
) {
2208 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2212 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2213 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2217 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2221 extern void GLAPIENTRY
2222 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2224 GET_CURRENT_CONTEXT(ctx
);
2226 if (!_mesa_has_tessellation(ctx
)) {
2227 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2232 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2233 FLUSH_VERTICES(ctx
, 0);
2234 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2235 4 * sizeof(GLfloat
));
2236 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2238 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2239 FLUSH_VERTICES(ctx
, 0);
2240 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2241 2 * sizeof(GLfloat
));
2242 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2245 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2251 * ARB_shader_subroutine
2254 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2257 GET_CURRENT_CONTEXT(ctx
);
2258 const char *api_name
= "glGetSubroutineUniformLocation";
2259 struct gl_shader_program
*shProg
;
2260 GLenum resource_type
;
2261 gl_shader_stage stage
;
2263 if (!_mesa_has_shader_subroutine(ctx
)) {
2264 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2268 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2269 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2273 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2277 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2278 if (!shProg
->_LinkedShaders
[stage
]) {
2279 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2283 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2284 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2288 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2291 GET_CURRENT_CONTEXT(ctx
);
2292 const char *api_name
= "glGetSubroutineIndex";
2293 struct gl_shader_program
*shProg
;
2294 struct gl_program_resource
*res
;
2295 GLenum resource_type
;
2296 gl_shader_stage stage
;
2298 if (!_mesa_has_shader_subroutine(ctx
)) {
2299 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2303 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2304 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2308 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2312 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2313 if (!shProg
->_LinkedShaders
[stage
]) {
2314 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2318 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2319 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2321 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2325 return _mesa_program_resource_index(shProg
, res
);
2330 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2331 GLuint index
, GLenum pname
, GLint
*values
)
2333 GET_CURRENT_CONTEXT(ctx
);
2334 const char *api_name
= "glGetActiveSubroutineUniformiv";
2335 struct gl_shader_program
*shProg
;
2336 struct gl_shader
*sh
;
2337 gl_shader_stage stage
;
2338 struct gl_program_resource
*res
;
2339 const struct gl_uniform_storage
*uni
;
2340 GLenum resource_type
;
2343 if (!_mesa_has_shader_subroutine(ctx
)) {
2344 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2348 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2349 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2353 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2357 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2358 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2360 sh
= shProg
->_LinkedShaders
[stage
];
2362 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2367 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2368 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2371 values
[0] = uni
->num_compatible_subroutines
;
2375 case GL_COMPATIBLE_SUBROUTINES
: {
2376 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2380 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2381 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2382 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2383 if (fn
->types
[j
] == uni
->type
) {
2384 values
[count
++] = i
;
2392 case GL_UNIFORM_SIZE
:
2393 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2396 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2399 case GL_UNIFORM_NAME_LENGTH
:
2400 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2402 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2403 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);;
2407 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2414 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2415 GLuint index
, GLsizei bufsize
,
2416 GLsizei
*length
, GLchar
*name
)
2418 GET_CURRENT_CONTEXT(ctx
);
2419 const char *api_name
= "glGetActiveSubroutineUniformName";
2420 struct gl_shader_program
*shProg
;
2421 GLenum resource_type
;
2422 gl_shader_stage stage
;
2424 if (!_mesa_has_shader_subroutine(ctx
)) {
2425 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2429 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2430 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2434 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2438 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2439 if (!shProg
->_LinkedShaders
[stage
]) {
2440 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2444 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2445 /* get program resource name */
2446 _mesa_get_program_resource_name(shProg
, resource_type
,
2448 length
, name
, api_name
);
2453 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2454 GLuint index
, GLsizei bufsize
,
2455 GLsizei
*length
, GLchar
*name
)
2457 GET_CURRENT_CONTEXT(ctx
);
2458 const char *api_name
= "glGetActiveSubroutineName";
2459 struct gl_shader_program
*shProg
;
2460 GLenum resource_type
;
2461 gl_shader_stage stage
;
2463 if (!_mesa_has_shader_subroutine(ctx
)) {
2464 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2468 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2469 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2473 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2477 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2478 if (!shProg
->_LinkedShaders
[stage
]) {
2479 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2482 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2483 _mesa_get_program_resource_name(shProg
, resource_type
,
2485 length
, name
, api_name
);
2490 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2491 const GLuint
*indices
)
2493 GET_CURRENT_CONTEXT(ctx
);
2494 const char *api_name
= "glUniformSubroutinesuiv";
2495 struct gl_shader_program
*shProg
;
2496 struct gl_shader
*sh
;
2497 gl_shader_stage stage
;
2500 if (!_mesa_has_shader_subroutine(ctx
)) {
2501 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2505 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2506 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2510 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2511 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2513 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2517 sh
= shProg
->_LinkedShaders
[stage
];
2519 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2523 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2524 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2530 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2536 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2539 for (j
= i
; j
< i
+ uni_count
; j
++) {
2540 struct gl_subroutine_function
*subfn
;
2541 if (indices
[j
] >= sh
->NumSubroutineFunctions
) {
2542 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2546 subfn
= &sh
->SubroutineFunctions
[indices
[j
]];
2547 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2548 if (subfn
->types
[k
] == uni
->type
)
2551 if (k
== subfn
->num_compat_types
) {
2552 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2559 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2562 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2568 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2570 memcpy(&uni
->storage
[0], &indices
[i
],
2571 sizeof(GLuint
) * uni_count
);
2573 uni
->initialized
= true;
2574 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2581 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2584 GET_CURRENT_CONTEXT(ctx
);
2585 const char *api_name
= "glGetUniformSubroutineuiv";
2586 struct gl_shader_program
*shProg
;
2587 struct gl_shader
*sh
;
2588 gl_shader_stage stage
;
2590 if (!_mesa_has_shader_subroutine(ctx
)) {
2591 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2595 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2596 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2600 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2601 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2603 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2607 sh
= shProg
->_LinkedShaders
[stage
];
2609 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2613 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2614 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2619 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[location
];
2620 int offset
= location
- uni
->opaque
[stage
].index
;
2621 memcpy(params
, &uni
->storage
[offset
],
2628 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2629 GLenum pname
, GLint
*values
)
2631 GET_CURRENT_CONTEXT(ctx
);
2632 const char *api_name
= "glGetProgramStageiv";
2633 struct gl_shader_program
*shProg
;
2634 struct gl_shader
*sh
;
2635 gl_shader_stage stage
;
2637 if (!_mesa_has_shader_subroutine(ctx
)) {
2638 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2642 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2643 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2647 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2651 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2652 sh
= shProg
->_LinkedShaders
[stage
];
2654 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2659 case GL_ACTIVE_SUBROUTINES
:
2660 values
[0] = sh
->NumSubroutineFunctions
;
2662 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2663 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2665 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2666 values
[0] = sh
->NumSubroutineUniformTypes
;
2668 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2672 GLenum resource_type
;
2673 struct gl_program_resource
*res
;
2675 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2676 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2677 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2679 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2684 values
[0] = max_len
;
2687 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2691 GLenum resource_type
;
2692 struct gl_program_resource
*res
;
2694 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2695 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2696 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2698 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2699 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2705 values
[0] = max_len
;
2709 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2716 find_compat_subroutine(struct gl_shader
*sh
, const struct glsl_type
*type
)
2720 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2721 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2722 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2723 if (fn
->types
[j
] == type
)
2731 _mesa_shader_init_subroutine_defaults(struct gl_shader
*sh
)
2735 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2736 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2742 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2743 val
= find_compat_subroutine(sh
, uni
->type
);
2745 for (j
= 0; j
< uni_count
; j
++)
2746 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2747 uni
->initialized
= true;
2748 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2753 _mesa_shader_program_init_subroutine_defaults(struct gl_shader_program
*shProg
)
2760 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2761 if (!shProg
->_LinkedShaders
[i
])
2764 _mesa_shader_init_subroutine_defaults(shProg
->_LinkedShaders
[i
]);