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 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
309 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
310 sh
= ctx
->Driver
.NewShader(ctx
, name
, type
);
311 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, sh
);
312 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
319 create_shader_program(struct gl_context
*ctx
)
322 struct gl_shader_program
*shProg
;
324 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
326 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
328 shProg
= _mesa_new_shader_program(name
);
330 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, shProg
);
332 assert(shProg
->RefCount
== 1);
334 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
341 * Delete a shader program. Actually, just decrement the program's
342 * reference count and mark it as DeletePending.
343 * Used to implement glDeleteProgram() and glDeleteObjectARB().
346 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
349 * NOTE: deleting shaders/programs works a bit differently than
350 * texture objects (and buffer objects, etc). Shader/program
351 * handles/IDs exist in the hash table until the object is really
352 * deleted (refcount==0). With texture objects, the handle/ID is
353 * removed from the hash table in glDeleteTextures() while the tex
354 * object itself might linger until its refcount goes to zero.
356 struct gl_shader_program
*shProg
;
358 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
362 if (!shProg
->DeletePending
) {
363 shProg
->DeletePending
= GL_TRUE
;
365 /* effectively, decr shProg's refcount */
366 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
372 delete_shader(struct gl_context
*ctx
, GLuint shader
)
374 struct gl_shader
*sh
;
376 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
380 if (!sh
->DeletePending
) {
381 sh
->DeletePending
= GL_TRUE
;
383 /* effectively, decr sh's refcount */
384 _mesa_reference_shader(ctx
, &sh
, NULL
);
390 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
392 struct gl_shader_program
*shProg
;
396 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
400 n
= shProg
->NumShaders
;
402 for (i
= 0; i
< n
; i
++) {
403 if (shProg
->Shaders
[i
]->Name
== shader
) {
405 struct gl_shader
**newList
;
408 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
410 /* alloc new, smaller array */
411 newList
= malloc((n
- 1) * sizeof(struct gl_shader
*));
413 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
416 /* Copy old list entries to new list, skipping removed entry at [i] */
417 for (j
= 0; j
< i
; j
++) {
418 newList
[j
] = shProg
->Shaders
[j
];
421 newList
[j
++] = shProg
->Shaders
[i
];
424 /* Free old list and install new one */
425 free(shProg
->Shaders
);
426 shProg
->Shaders
= newList
;
427 shProg
->NumShaders
= n
- 1;
430 /* sanity check - make sure the new list's entries are sensible */
431 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
432 assert(shProg
->Shaders
[j
]->Type
== GL_VERTEX_SHADER
||
433 shProg
->Shaders
[j
]->Type
== GL_TESS_CONTROL_SHADER
||
434 shProg
->Shaders
[j
]->Type
== GL_TESS_EVALUATION_SHADER
||
435 shProg
->Shaders
[j
]->Type
== GL_GEOMETRY_SHADER
||
436 shProg
->Shaders
[j
]->Type
== GL_FRAGMENT_SHADER
);
437 assert(shProg
->Shaders
[j
]->RefCount
> 0);
448 if (is_shader(ctx
, shader
) || is_program(ctx
, shader
))
449 err
= GL_INVALID_OPERATION
;
451 err
= GL_INVALID_VALUE
;
452 _mesa_error(ctx
, err
, "glDetachShader(shader)");
459 * Return list of shaders attached to shader program.
462 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
463 GLsizei
*count
, GLuint
*obj
)
465 struct gl_shader_program
*shProg
;
468 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetAttachedShaders(maxCount < 0)");
473 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
477 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
478 obj
[i
] = shProg
->Shaders
[i
]->Name
;
487 * glGetHandleARB() - return ID/name of currently bound shader program.
490 get_handle(struct gl_context
*ctx
, GLenum pname
)
492 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
493 if (ctx
->_Shader
->ActiveProgram
)
494 return ctx
->_Shader
->ActiveProgram
->Name
;
499 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
506 * Check if a geometry shader query is valid at this time. If not, report an
507 * error and return false.
509 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
511 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
512 * are queried for a program which has not been linked successfully, or
513 * which does not contain objects to form a geometry shader, then an
514 * INVALID_OPERATION error is generated."
517 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
519 if (shProg
->LinkStatus
&&
520 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
524 _mesa_error(ctx
, GL_INVALID_OPERATION
,
525 "glGetProgramv(linked geometry shader required)");
531 * Check if a tessellation control shader query is valid at this time.
532 * If not, report an error and return false.
534 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
536 * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
537 * not been linked successfully, or which does not contain objects to
538 * form a tessellation control shader, then an INVALID_OPERATION error is
542 check_tcs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
544 if (shProg
->LinkStatus
&&
545 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
] != NULL
) {
549 _mesa_error(ctx
, GL_INVALID_OPERATION
,
550 "glGetProgramv(linked tessellation control shader required)");
556 * Check if a tessellation evaluation shader query is valid at this time.
557 * If not, report an error and return false.
559 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
561 * "If any of the pname values in this paragraph are queried for a program
562 * which has not been linked successfully, or which does not contain
563 * objects to form a tessellation evaluation shader, then an
564 * INVALID_OPERATION error is generated."
568 check_tes_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
570 if (shProg
->LinkStatus
&&
571 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
] != NULL
) {
575 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramv(linked tessellation "
576 "evaluation shader required)");
582 * glGetProgramiv() - get shader program state.
583 * Note that this is for GLSL shader programs, not ARB vertex/fragment
584 * programs (see glGetProgramivARB).
587 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
,
590 struct gl_shader_program
*shProg
591 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramiv(program)");
593 /* Is transform feedback available in this context?
596 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
597 || ctx
->API
== API_OPENGL_CORE
598 || _mesa_is_gles3(ctx
);
600 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
601 * and GL 3.2) are available in this context
603 const bool has_core_gs
= _mesa_has_geometry_shaders(ctx
);
604 const bool has_tess
= _mesa_has_tessellation(ctx
);
606 /* Are uniform buffer objects available in this context?
609 (ctx
->API
== API_OPENGL_COMPAT
&&
610 ctx
->Extensions
.ARB_uniform_buffer_object
)
611 || ctx
->API
== API_OPENGL_CORE
612 || _mesa_is_gles3(ctx
);
619 case GL_DELETE_STATUS
:
620 *params
= shProg
->DeletePending
;
623 *params
= shProg
->LinkStatus
;
625 case GL_VALIDATE_STATUS
:
626 *params
= shProg
->Validated
;
628 case GL_INFO_LOG_LENGTH
:
629 *params
= shProg
->InfoLog
? strlen(shProg
->InfoLog
) + 1 : 0;
631 case GL_ATTACHED_SHADERS
:
632 *params
= shProg
->NumShaders
;
634 case GL_ACTIVE_ATTRIBUTES
:
635 *params
= _mesa_count_active_attribs(shProg
);
637 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
638 *params
= _mesa_longest_attribute_name_length(shProg
);
640 case GL_ACTIVE_UNIFORMS
: {
642 const unsigned num_uniforms
=
643 shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
644 for (*params
= 0, i
= 0; i
< num_uniforms
; i
++) {
645 if (!shProg
->UniformStorage
[i
].is_shader_storage
)
650 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
653 const unsigned num_uniforms
=
654 shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
656 for (i
= 0; i
< num_uniforms
; i
++) {
657 if (shProg
->UniformStorage
[i
].is_shader_storage
)
660 /* Add one for the terminating NUL character for a non-array, and
661 * 4 for the "[0]" and the NUL for an array.
663 const GLint len
= strlen(shProg
->UniformStorage
[i
].name
) + 1 +
664 ((shProg
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
673 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
676 *params
= shProg
->TransformFeedback
.NumVarying
;
678 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
684 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
685 /* Add one for the terminating NUL character.
688 strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
697 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
700 *params
= shProg
->TransformFeedback
.BufferMode
;
702 case GL_GEOMETRY_VERTICES_OUT
:
705 if (check_gs_query(ctx
, shProg
))
706 *params
= shProg
->Geom
.VerticesOut
;
708 case GL_GEOMETRY_SHADER_INVOCATIONS
:
709 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
711 if (check_gs_query(ctx
, shProg
))
712 *params
= shProg
->Geom
.Invocations
;
714 case GL_GEOMETRY_INPUT_TYPE
:
717 if (check_gs_query(ctx
, shProg
))
718 *params
= shProg
->Geom
.InputType
;
720 case GL_GEOMETRY_OUTPUT_TYPE
:
723 if (check_gs_query(ctx
, shProg
))
724 *params
= shProg
->Geom
.OutputType
;
726 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
733 for (i
= 0; i
< shProg
->NumUniformBlocks
; i
++) {
734 /* Add one for the terminating NUL character.
736 const GLint len
= strlen(shProg
->UniformBlocks
[i
].Name
) + 1;
745 case GL_ACTIVE_UNIFORM_BLOCKS
:
749 *params
= shProg
->NumUniformBlocks
;
751 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
752 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
753 * only available with desktop OpenGL 3.0+ with the
754 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
756 * On desktop, we ignore the 3.0+ requirement because it is silly.
758 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
761 *params
= shProg
->BinaryRetreivableHint
;
763 case GL_PROGRAM_BINARY_LENGTH
:
766 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
767 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
770 *params
= shProg
->NumAtomicBuffers
;
772 case GL_COMPUTE_WORK_GROUP_SIZE
: {
774 if (!_mesa_has_compute_shaders(ctx
))
776 if (!shProg
->LinkStatus
) {
777 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
781 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
782 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
786 for (i
= 0; i
< 3; i
++)
787 params
[i
] = shProg
->Comp
.LocalSize
[i
];
790 case GL_PROGRAM_SEPARABLE
:
791 /* If the program has not been linked, return initial value 0. */
792 *params
= (shProg
->LinkStatus
== GL_FALSE
) ? 0 : shProg
->SeparateShader
;
795 /* ARB_tessellation_shader */
796 case GL_TESS_CONTROL_OUTPUT_VERTICES
:
799 if (check_tcs_query(ctx
, shProg
))
800 *params
= shProg
->TessCtrl
.VerticesOut
;
802 case GL_TESS_GEN_MODE
:
805 if (check_tes_query(ctx
, shProg
))
806 *params
= shProg
->TessEval
.PrimitiveMode
;
808 case GL_TESS_GEN_SPACING
:
811 if (check_tes_query(ctx
, shProg
))
812 *params
= shProg
->TessEval
.Spacing
;
814 case GL_TESS_GEN_VERTEX_ORDER
:
817 if (check_tes_query(ctx
, shProg
))
818 *params
= shProg
->TessEval
.VertexOrder
;
820 case GL_TESS_GEN_POINT_MODE
:
823 if (check_tes_query(ctx
, shProg
))
824 *params
= shProg
->TessEval
.PointMode
;
830 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
831 _mesa_enum_to_string(pname
));
836 * glGetShaderiv() - get GLSL shader state
839 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
841 struct gl_shader
*shader
=
842 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
850 *params
= shader
->Type
;
852 case GL_DELETE_STATUS
:
853 *params
= shader
->DeletePending
;
855 case GL_COMPILE_STATUS
:
856 *params
= shader
->CompileStatus
;
858 case GL_INFO_LOG_LENGTH
:
859 *params
= shader
->InfoLog
? strlen(shader
->InfoLog
) + 1 : 0;
861 case GL_SHADER_SOURCE_LENGTH
:
862 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
865 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
872 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
873 GLsizei
*length
, GLchar
*infoLog
)
875 struct gl_shader_program
*shProg
;
877 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
878 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
880 * "If a negative number is provided where an argument of type sizei or
881 * sizeiptr is specified, an INVALID_VALUE error is generated."
884 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(bufSize < 0)");
888 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
889 "glGetProgramInfoLog(program)");
894 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
899 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
900 GLsizei
*length
, GLchar
*infoLog
)
902 struct gl_shader
*sh
;
904 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
905 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
907 * "If a negative number is provided where an argument of type sizei or
908 * sizeiptr is specified, an INVALID_VALUE error is generated."
911 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(bufSize < 0)");
915 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderInfoLog(shader)");
920 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
925 * Return shader source code.
928 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
929 GLsizei
*length
, GLchar
*sourceOut
)
931 struct gl_shader
*sh
;
934 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderSource(bufSize < 0)");
938 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
942 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
947 * Set/replace shader source code. A helper function used by
948 * glShaderSource[ARB].
951 shader_source(struct gl_shader
*sh
, const GLchar
*source
)
955 /* free old shader source string and install new one */
956 free((void *)sh
->Source
);
959 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
968 _mesa_compile_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
974 /* If the user called glCompileShader without first calling
975 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
977 sh
->CompileStatus
= GL_FALSE
;
979 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
980 _mesa_log("GLSL source for %s shader %d:\n",
981 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
982 _mesa_log("%s\n", sh
->Source
);
985 /* this call will set the shader->CompileStatus field to indicate if
986 * compilation was successful.
988 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
990 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
991 _mesa_write_shader_to_file(sh
);
994 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
995 if (sh
->CompileStatus
) {
996 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
997 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
1000 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
1002 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
1003 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
1004 _mesa_log("%s\n", sh
->InfoLog
);
1009 if (!sh
->CompileStatus
) {
1010 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1011 _mesa_log("GLSL source for %s shader %d:\n",
1012 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1013 _mesa_log("%s\n", sh
->Source
);
1014 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1017 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1018 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1019 sh
->Name
, sh
->InfoLog
);
1026 * Link a program's shaders.
1029 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1034 /* From the ARB_transform_feedback2 specification:
1035 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1036 * the name of a program being used by one or more transform feedback
1037 * objects, even if the objects are not currently bound or are paused."
1039 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1040 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1041 "glLinkProgram(transform feedback is using the program)");
1045 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1047 _mesa_glsl_link_shader(ctx
, shProg
);
1049 if (shProg
->LinkStatus
== GL_FALSE
&&
1050 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1051 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1052 shProg
->Name
, shProg
->InfoLog
);
1059 printf("Link %u shaders in program %u: %s\n",
1060 shProg
->NumShaders
, shProg
->Name
,
1061 shProg
->LinkStatus
? "Success" : "Failed");
1063 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1064 printf(" shader %u, type 0x%x\n",
1065 shProg
->Shaders
[i
]->Name
,
1066 shProg
->Shaders
[i
]->Type
);
1073 * Print basic shader info (for debug).
1076 print_shader_info(const struct gl_shader_program
*shProg
)
1080 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1081 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1082 printf(" %s shader %u, checksum %u\n",
1083 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1084 shProg
->Shaders
[i
]->Name
,
1085 shProg
->Shaders
[i
]->SourceChecksum
);
1087 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1088 printf(" vert prog %u\n",
1089 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1090 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1091 printf(" frag prog %u\n",
1092 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1093 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1094 printf(" geom prog %u\n",
1095 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1096 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1097 printf(" tesc prog %u\n",
1098 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1099 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1100 printf(" tese prog %u\n",
1101 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1106 * Use the named shader program for subsequent glUniform calls
1109 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1112 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1113 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1114 "%s(program %u not linked)", caller
, shProg
->Name
);
1118 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1119 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1125 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1126 struct gl_shader_program
*shProg
,
1127 struct gl_pipeline_object
*shTarget
)
1129 struct gl_shader_program
**target
;
1131 target
= &shTarget
->CurrentProgram
[stage
];
1132 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1135 if (*target
!= shProg
) {
1136 /* Program is current, flush it */
1137 if (shTarget
== ctx
->_Shader
) {
1138 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1141 /* If the shader is also bound as the current rendering shader, unbind
1142 * it from that binding point as well. This ensures that the correct
1143 * semantics of glDeleteProgram are maintained.
1146 case MESA_SHADER_VERTEX
:
1147 case MESA_SHADER_TESS_CTRL
:
1148 case MESA_SHADER_TESS_EVAL
:
1149 case MESA_SHADER_GEOMETRY
:
1150 case MESA_SHADER_COMPUTE
:
1151 /* Empty for now. */
1153 case MESA_SHADER_FRAGMENT
:
1154 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1155 _mesa_reference_shader_program(ctx
,
1156 &ctx
->_Shader
->_CurrentFragmentProgram
,
1162 _mesa_reference_shader_program(ctx
, target
, shProg
);
1169 * Use the named shader program for subsequent rendering.
1172 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1175 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1176 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1177 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1179 _mesa_shader_program_init_subroutine_defaults(shProg
);
1180 if (ctx
->Driver
.UseProgram
)
1181 ctx
->Driver
.UseProgram(ctx
, shProg
);
1186 * Do validation of the given shader program.
1187 * \param errMsg returns error message if validation fails.
1188 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1191 validate_shader_program(const struct gl_shader_program
*shProg
,
1194 if (!shProg
->LinkStatus
) {
1198 /* From the GL spec, a program is invalid if any of these are true:
1200 any two active samplers in the current program object are of
1201 different types, but refer to the same texture image unit,
1203 any active sampler in the current program object refers to a texture
1204 image unit where fixed-function fragment processing accesses a
1205 texture target that does not match the sampler type, or
1207 the sum of the number of active samplers in the program and the
1208 number of texture image units enabled for fixed-function fragment
1209 processing exceeds the combined limit on the total number of texture
1210 image units allowed.
1214 * Check: any two active samplers in the current program object are of
1215 * different types, but refer to the same texture image unit,
1217 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1225 * Called via glValidateProgram()
1228 validate_program(struct gl_context
*ctx
, GLuint program
)
1230 struct gl_shader_program
*shProg
;
1231 char errMsg
[100] = "";
1233 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1238 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1239 if (!shProg
->Validated
) {
1240 /* update info log */
1241 if (shProg
->InfoLog
) {
1242 ralloc_free(shProg
->InfoLog
);
1244 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1251 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1253 GET_CURRENT_CONTEXT(ctx
);
1254 attach_shader(ctx
, program
, shader
);
1259 _mesa_AttachShader(GLuint program
, GLuint shader
)
1261 GET_CURRENT_CONTEXT(ctx
);
1262 attach_shader(ctx
, program
, shader
);
1267 _mesa_CompileShader(GLuint shaderObj
)
1269 GET_CURRENT_CONTEXT(ctx
);
1270 if (MESA_VERBOSE
& VERBOSE_API
)
1271 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1272 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1273 "glCompileShader"));
1278 _mesa_CreateShader(GLenum type
)
1280 GET_CURRENT_CONTEXT(ctx
);
1281 if (MESA_VERBOSE
& VERBOSE_API
)
1282 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1283 return create_shader(ctx
, type
);
1287 GLhandleARB GLAPIENTRY
1288 _mesa_CreateShaderObjectARB(GLenum type
)
1290 GET_CURRENT_CONTEXT(ctx
);
1291 return create_shader(ctx
, type
);
1296 _mesa_CreateProgram(void)
1298 GET_CURRENT_CONTEXT(ctx
);
1299 if (MESA_VERBOSE
& VERBOSE_API
)
1300 _mesa_debug(ctx
, "glCreateProgram\n");
1301 return create_shader_program(ctx
);
1305 GLhandleARB GLAPIENTRY
1306 _mesa_CreateProgramObjectARB(void)
1308 GET_CURRENT_CONTEXT(ctx
);
1309 return create_shader_program(ctx
);
1314 _mesa_DeleteObjectARB(GLhandleARB obj
)
1316 if (MESA_VERBOSE
& VERBOSE_API
) {
1317 GET_CURRENT_CONTEXT(ctx
);
1318 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1322 GET_CURRENT_CONTEXT(ctx
);
1323 FLUSH_VERTICES(ctx
, 0);
1324 if (is_program(ctx
, obj
)) {
1325 delete_shader_program(ctx
, obj
);
1327 else if (is_shader(ctx
, obj
)) {
1328 delete_shader(ctx
, obj
);
1338 _mesa_DeleteProgram(GLuint name
)
1341 GET_CURRENT_CONTEXT(ctx
);
1342 FLUSH_VERTICES(ctx
, 0);
1343 delete_shader_program(ctx
, name
);
1349 _mesa_DeleteShader(GLuint name
)
1352 GET_CURRENT_CONTEXT(ctx
);
1353 FLUSH_VERTICES(ctx
, 0);
1354 delete_shader(ctx
, name
);
1360 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1362 GET_CURRENT_CONTEXT(ctx
);
1363 detach_shader(ctx
, program
, shader
);
1368 _mesa_DetachShader(GLuint program
, GLuint shader
)
1370 GET_CURRENT_CONTEXT(ctx
);
1371 detach_shader(ctx
, program
, shader
);
1376 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1377 GLsizei
* count
, GLhandleARB
* obj
)
1379 GET_CURRENT_CONTEXT(ctx
);
1380 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1385 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1386 GLsizei
*count
, GLuint
*obj
)
1388 GET_CURRENT_CONTEXT(ctx
);
1389 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1394 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1395 GLcharARB
* infoLog
)
1397 GET_CURRENT_CONTEXT(ctx
);
1398 if (is_program(ctx
, object
)) {
1399 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1401 else if (is_shader(ctx
, object
)) {
1402 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1405 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1411 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1413 GET_CURRENT_CONTEXT(ctx
);
1414 /* Implement in terms of GetProgramiv, GetShaderiv */
1415 if (is_program(ctx
, object
)) {
1416 if (pname
== GL_OBJECT_TYPE_ARB
) {
1417 *params
= GL_PROGRAM_OBJECT_ARB
;
1420 get_programiv(ctx
, object
, pname
, params
);
1423 else if (is_shader(ctx
, object
)) {
1424 if (pname
== GL_OBJECT_TYPE_ARB
) {
1425 *params
= GL_SHADER_OBJECT_ARB
;
1428 get_shaderiv(ctx
, object
, pname
, params
);
1432 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1438 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1441 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1442 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1443 params
[0] = (GLfloat
) iparams
[0];
1448 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1450 GET_CURRENT_CONTEXT(ctx
);
1451 get_programiv(ctx
, program
, pname
, params
);
1456 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1458 GET_CURRENT_CONTEXT(ctx
);
1459 get_shaderiv(ctx
, shader
, pname
, params
);
1464 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1465 GLsizei
*length
, GLchar
*infoLog
)
1467 GET_CURRENT_CONTEXT(ctx
);
1468 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1473 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1474 GLsizei
*length
, GLchar
*infoLog
)
1476 GET_CURRENT_CONTEXT(ctx
);
1477 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1482 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1483 GLsizei
*length
, GLchar
*sourceOut
)
1485 GET_CURRENT_CONTEXT(ctx
);
1486 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1490 GLhandleARB GLAPIENTRY
1491 _mesa_GetHandleARB(GLenum pname
)
1493 GET_CURRENT_CONTEXT(ctx
);
1494 return get_handle(ctx
, pname
);
1498 GLboolean GLAPIENTRY
1499 _mesa_IsProgram(GLuint name
)
1501 GET_CURRENT_CONTEXT(ctx
);
1502 return is_program(ctx
, name
);
1506 GLboolean GLAPIENTRY
1507 _mesa_IsShader(GLuint name
)
1509 GET_CURRENT_CONTEXT(ctx
);
1510 return is_shader(ctx
, name
);
1515 _mesa_LinkProgram(GLuint programObj
)
1517 GET_CURRENT_CONTEXT(ctx
);
1518 if (MESA_VERBOSE
& VERBOSE_API
)
1519 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1520 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1524 #if defined(HAVE_SHA1)
1526 * Generate a SHA-1 hash value string for given source string.
1529 generate_sha1(const char *source
, char sha_str
[64])
1531 unsigned char sha
[20];
1532 _mesa_sha1_compute(source
, strlen(source
), sha
);
1533 _mesa_sha1_format(sha_str
, sha
);
1537 * Construct a full path for shader replacement functionality using
1540 * <path>/<stage prefix>_<CHECKSUM>.glsl
1543 construct_name(const gl_shader_stage stage
, const char *source
,
1544 const char *path
, char *name
, unsigned length
)
1547 static const char *types
[] = {
1548 "VS", "TC", "TE", "GS", "FS", "CS",
1551 generate_sha1(source
, sha
);
1552 _mesa_snprintf(name
, length
, "%s/%s_%s.glsl", path
, types
[stage
],
1557 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1560 dump_shader(const gl_shader_stage stage
, const char *source
)
1562 char name
[PATH_MAX
];
1563 static bool path_exists
= true;
1570 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1572 path_exists
= false;
1576 construct_name(stage
, source
, dump_path
, name
, PATH_MAX
);
1578 f
= fopen(name
, "w");
1583 GET_CURRENT_CONTEXT(ctx
);
1584 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1590 * Read shader source code from a file.
1591 * Useful for debugging to override an app's shader.
1594 read_shader(const gl_shader_stage stage
, const char *source
)
1596 char name
[PATH_MAX
];
1598 static bool path_exists
= true;
1599 int len
, shader_size
= 0;
1606 read_path
= getenv("MESA_SHADER_READ_PATH");
1608 path_exists
= false;
1612 construct_name(stage
, source
, read_path
, name
, PATH_MAX
);
1614 f
= fopen(name
, "r");
1618 /* allocate enough room for the entire shader */
1619 fseek(f
, 0, SEEK_END
);
1620 shader_size
= ftell(f
);
1622 assert(shader_size
);
1624 /* add one for terminating zero */
1627 buffer
= malloc(shader_size
);
1630 len
= fread(buffer
, 1, shader_size
, f
);
1637 #endif /* HAVE_SHA1 */
1640 * Called via glShaderSource() and glShaderSourceARB() API functions.
1641 * Basically, concatenate the source code strings into one long string
1642 * and pass it to _mesa_shader_source().
1645 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1646 const GLchar
* const * string
, const GLint
* length
)
1648 GET_CURRENT_CONTEXT(ctx
);
1650 GLsizei i
, totalLength
;
1652 struct gl_shader
*sh
;
1654 #if defined(HAVE_SHA1)
1655 GLcharARB
*replacement
;
1656 #endif /* HAVE_SHA1 */
1658 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1662 if (string
== NULL
) {
1663 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1668 * This array holds offsets of where the appropriate string ends, thus the
1669 * last element will be set to the total length of the source code.
1671 offsets
= malloc(count
* sizeof(GLint
));
1672 if (offsets
== NULL
) {
1673 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1677 for (i
= 0; i
< count
; i
++) {
1678 if (string
[i
] == NULL
) {
1679 free((GLvoid
*) offsets
);
1680 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1681 "glShaderSourceARB(null string)");
1684 if (length
== NULL
|| length
[i
] < 0)
1685 offsets
[i
] = strlen(string
[i
]);
1687 offsets
[i
] = length
[i
];
1688 /* accumulate string lengths */
1690 offsets
[i
] += offsets
[i
- 1];
1693 /* Total length of source string is sum off all strings plus two.
1694 * One extra byte for terminating zero, another extra byte to silence
1695 * valgrind warnings in the parser/grammer code.
1697 totalLength
= offsets
[count
- 1] + 2;
1698 source
= malloc(totalLength
* sizeof(GLcharARB
));
1699 if (source
== NULL
) {
1700 free((GLvoid
*) offsets
);
1701 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1705 for (i
= 0; i
< count
; i
++) {
1706 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1707 memcpy(source
+ start
, string
[i
],
1708 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1710 source
[totalLength
- 1] = '\0';
1711 source
[totalLength
- 2] = '\0';
1713 #if defined(HAVE_SHA1)
1714 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1715 * if corresponding entry found from MESA_SHADER_READ_PATH.
1717 dump_shader(sh
->Stage
, source
);
1719 replacement
= read_shader(sh
->Stage
, source
);
1722 source
= replacement
;
1724 #endif /* HAVE_SHA1 */
1726 shader_source(sh
, source
);
1733 _mesa_UseProgram(GLuint program
)
1735 GET_CURRENT_CONTEXT(ctx
);
1736 struct gl_shader_program
*shProg
;
1738 if (MESA_VERBOSE
& VERBOSE_API
)
1739 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1741 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1742 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1743 "glUseProgram(transform feedback active)");
1748 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1752 if (!shProg
->LinkStatus
) {
1753 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1754 "glUseProgram(program %u not linked)", program
);
1759 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1760 print_shader_info(shProg
);
1767 /* The ARB_separate_shader_object spec says:
1769 * "The executable code for an individual shader stage is taken from
1770 * the current program for that stage. If there is a current program
1771 * object established by UseProgram, that program is considered current
1772 * for all stages. Otherwise, if there is a bound program pipeline
1773 * object (section 2.14.PPO), the program bound to the appropriate
1774 * stage of the pipeline object is considered current."
1777 /* Attach shader state to the binding point */
1778 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1779 /* Update the program */
1780 _mesa_use_program(ctx
, shProg
);
1782 /* Must be done first: detach the progam */
1783 _mesa_use_program(ctx
, shProg
);
1784 /* Unattach shader_state binding point */
1785 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1786 /* If a pipeline was bound, rebind it */
1787 if (ctx
->Pipeline
.Current
) {
1788 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1795 _mesa_ValidateProgram(GLuint program
)
1797 GET_CURRENT_CONTEXT(ctx
);
1798 validate_program(ctx
, program
);
1803 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1806 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1807 GLint
* range
, GLint
* precision
)
1809 const struct gl_program_constants
*limits
;
1810 const struct gl_precision
*p
;
1811 GET_CURRENT_CONTEXT(ctx
);
1813 switch (shadertype
) {
1814 case GL_VERTEX_SHADER
:
1815 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1817 case GL_FRAGMENT_SHADER
:
1818 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1821 _mesa_error(ctx
, GL_INVALID_ENUM
,
1822 "glGetShaderPrecisionFormat(shadertype)");
1826 switch (precisiontype
) {
1828 p
= &limits
->LowFloat
;
1830 case GL_MEDIUM_FLOAT
:
1831 p
= &limits
->MediumFloat
;
1834 p
= &limits
->HighFloat
;
1837 p
= &limits
->LowInt
;
1840 p
= &limits
->MediumInt
;
1843 p
= &limits
->HighInt
;
1846 _mesa_error(ctx
, GL_INVALID_ENUM
,
1847 "glGetShaderPrecisionFormat(precisiontype)");
1851 range
[0] = p
->RangeMin
;
1852 range
[1] = p
->RangeMax
;
1853 precision
[0] = p
->Precision
;
1858 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1861 _mesa_ReleaseShaderCompiler(void)
1863 _mesa_destroy_shader_compiler_caches();
1868 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1871 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1872 const void* binary
, GLint length
)
1874 GET_CURRENT_CONTEXT(ctx
);
1876 (void) binaryformat
;
1879 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1880 * page 88 of the OpenGL 4.5 specs state:
1882 * "An INVALID_VALUE error is generated if count or length is negative.
1883 * An INVALID_ENUM error is generated if binaryformat is not a supported
1884 * format returned in SHADER_BINARY_FORMATS."
1886 if (n
< 0 || length
< 0) {
1887 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1891 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1896 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1897 GLenum
*binaryFormat
, GLvoid
*binary
)
1899 struct gl_shader_program
*shProg
;
1900 GLsizei length_dummy
;
1901 GET_CURRENT_CONTEXT(ctx
);
1904 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1908 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1912 /* The ARB_get_program_binary spec says:
1914 * "If <length> is NULL, then no length is returned."
1916 * Ensure that length always points to valid storage to avoid multiple NULL
1917 * pointer checks below.
1920 length
= &length_dummy
;
1923 /* The ARB_get_program_binary spec says:
1925 * "When a program object's LINK_STATUS is FALSE, its program binary
1926 * length is zero, and a call to GetProgramBinary will generate an
1927 * INVALID_OPERATION error.
1929 if (!shProg
->LinkStatus
) {
1930 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1931 "glGetProgramBinary(program %u not linked)",
1938 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1939 "glGetProgramBinary(driver supports zero binary formats)");
1941 (void) binaryFormat
;
1946 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1947 const GLvoid
*binary
, GLsizei length
)
1949 struct gl_shader_program
*shProg
;
1950 GET_CURRENT_CONTEXT(ctx
);
1952 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1956 (void) binaryFormat
;
1959 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
1961 * "If a negative number is provided where an argument of type sizei or
1962 * sizeiptr is specified, an INVALID_VALUE error is generated."
1965 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
1969 /* The ARB_get_program_binary spec says:
1971 * "<binaryFormat> and <binary> must be those returned by a previous
1972 * call to GetProgramBinary, and <length> must be the length of the
1973 * program binary as returned by GetProgramBinary or GetProgramiv with
1974 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
1975 * setting the LINK_STATUS of <program> to FALSE, if these conditions
1978 * Since any value of binaryFormat passed "is not one of those specified as
1979 * allowable for [this] command, an INVALID_ENUM error is generated."
1981 shProg
->LinkStatus
= GL_FALSE
;
1982 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
1987 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1989 struct gl_shader_program
*shProg
;
1990 GET_CURRENT_CONTEXT(ctx
);
1992 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1993 "glProgramParameteri");
1998 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1999 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2000 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2001 * even be in the dispatch table, so we shouldn't need to expclicitly
2004 * On desktop, we ignore the 3.0+ requirement because it is silly.
2007 /* The ARB_get_program_binary extension spec says:
2009 * "An INVALID_VALUE error is generated if the <value> argument to
2010 * ProgramParameteri is not TRUE or FALSE."
2012 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2016 /* No need to notify the driver. Any changes will actually take effect
2017 * the next time the shader is linked.
2019 * The ARB_get_program_binary extension spec says:
2021 * "To indicate that a program binary is likely to be retrieved,
2022 * ProgramParameteri should be called with <pname>
2023 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2024 * will not be in effect until the next time LinkProgram or
2025 * ProgramBinary has been called successfully."
2027 * The resloution of issue 9 in the extension spec also says:
2029 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2030 * to indicate to the GL implementation that this program will
2031 * likely be saved with GetProgramBinary at some point. This will
2032 * give the GL implementation the opportunity to track any state
2033 * changes made to the program before being saved such that when it
2034 * is loaded again a recompile can be avoided."
2036 shProg
->BinaryRetreivableHint
= value
;
2039 case GL_PROGRAM_SEPARABLE
:
2040 /* Spec imply that the behavior is the same as ARB_get_program_binary
2041 * Chapter 7.3 Program Objects
2043 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2046 shProg
->SeparateShader
= value
;
2050 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2051 _mesa_enum_to_string(pname
));
2056 _mesa_error(ctx
, GL_INVALID_VALUE
,
2057 "glProgramParameteri(pname=%s, value=%d): "
2058 "value must be 0 or 1.",
2059 _mesa_enum_to_string(pname
),
2065 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2066 struct gl_shader_program
*shProg
,
2067 struct gl_pipeline_object
*shTarget
)
2069 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2070 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2072 if (ctx
->Driver
.UseProgram
)
2073 ctx
->Driver
.UseProgram(ctx
, shProg
);
2078 * Copy program-specific data generated by linking from the gl_shader_program
2079 * object to a specific gl_program object.
2082 _mesa_copy_linked_program_data(gl_shader_stage type
,
2083 const struct gl_shader_program
*src
,
2084 struct gl_program
*dst
)
2087 case MESA_SHADER_VERTEX
:
2088 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2089 dst
->CullDistanceArraySize
= src
->Vert
.CullDistanceArraySize
;
2091 case MESA_SHADER_TESS_CTRL
: {
2092 struct gl_tess_ctrl_program
*dst_tcp
=
2093 (struct gl_tess_ctrl_program
*) dst
;
2094 dst_tcp
->VerticesOut
= src
->TessCtrl
.VerticesOut
;
2097 case MESA_SHADER_TESS_EVAL
: {
2098 struct gl_tess_eval_program
*dst_tep
=
2099 (struct gl_tess_eval_program
*) dst
;
2100 dst_tep
->PrimitiveMode
= src
->TessEval
.PrimitiveMode
;
2101 dst_tep
->Spacing
= src
->TessEval
.Spacing
;
2102 dst_tep
->VertexOrder
= src
->TessEval
.VertexOrder
;
2103 dst_tep
->PointMode
= src
->TessEval
.PointMode
;
2104 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2105 dst
->CullDistanceArraySize
= src
->TessEval
.CullDistanceArraySize
;
2108 case MESA_SHADER_GEOMETRY
: {
2109 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
2110 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
2111 dst_gp
->VerticesOut
= src
->Geom
.VerticesOut
;
2112 dst_gp
->Invocations
= src
->Geom
.Invocations
;
2113 dst_gp
->InputType
= src
->Geom
.InputType
;
2114 dst_gp
->OutputType
= src
->Geom
.OutputType
;
2115 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2116 dst
->CullDistanceArraySize
= src
->Geom
.CullDistanceArraySize
;
2117 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;
2118 dst_gp
->UsesStreams
= src
->Geom
.UsesStreams
;
2121 case MESA_SHADER_FRAGMENT
: {
2122 struct gl_fragment_program
*dst_fp
= (struct gl_fragment_program
*) dst
;
2123 dst_fp
->FragDepthLayout
= src
->FragDepthLayout
;
2126 case MESA_SHADER_COMPUTE
: {
2127 struct gl_compute_program
*dst_cp
= (struct gl_compute_program
*) dst
;
2129 for (i
= 0; i
< 3; i
++)
2130 dst_cp
->LocalSize
[i
] = src
->Comp
.LocalSize
[i
];
2131 dst_cp
->SharedSize
= src
->Comp
.SharedSize
;
2140 * ARB_separate_shader_objects: Compile & Link Program
2143 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2144 const GLchar
* const *strings
)
2146 GET_CURRENT_CONTEXT(ctx
);
2148 const GLuint shader
= create_shader(ctx
, type
);
2152 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2153 * GL_INVALID_VALUE should be generated if count < 0
2156 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2161 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2163 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2164 _mesa_compile_shader(ctx
, sh
);
2166 program
= create_shader_program(ctx
);
2168 struct gl_shader_program
*shProg
;
2169 GLint compiled
= GL_FALSE
;
2171 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2173 shProg
->SeparateShader
= GL_TRUE
;
2175 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2177 attach_shader(ctx
, program
, shader
);
2178 _mesa_link_program(ctx
, shProg
);
2179 detach_shader(ctx
, program
, shader
);
2183 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2184 append
-error
-to
-info
-log
;
2185 shProg
->LinkStatus
= GL_FALSE
;
2190 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2193 delete_shader(ctx
, shader
);
2201 * For GL_ARB_tessellation_shader
2203 extern void GLAPIENTRY
2204 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2206 GET_CURRENT_CONTEXT(ctx
);
2208 if (!_mesa_has_tessellation(ctx
)) {
2209 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2213 if (pname
!= GL_PATCH_VERTICES
) {
2214 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2218 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2219 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2223 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2227 extern void GLAPIENTRY
2228 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2230 GET_CURRENT_CONTEXT(ctx
);
2232 if (!_mesa_has_tessellation(ctx
)) {
2233 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2238 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2239 FLUSH_VERTICES(ctx
, 0);
2240 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2241 4 * sizeof(GLfloat
));
2242 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2244 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2245 FLUSH_VERTICES(ctx
, 0);
2246 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2247 2 * sizeof(GLfloat
));
2248 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2251 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2257 * ARB_shader_subroutine
2260 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2263 GET_CURRENT_CONTEXT(ctx
);
2264 const char *api_name
= "glGetSubroutineUniformLocation";
2265 struct gl_shader_program
*shProg
;
2266 GLenum resource_type
;
2267 gl_shader_stage stage
;
2269 if (!_mesa_has_shader_subroutine(ctx
)) {
2270 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2274 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2275 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2279 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2283 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2284 if (!shProg
->_LinkedShaders
[stage
]) {
2285 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2289 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2290 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2294 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2297 GET_CURRENT_CONTEXT(ctx
);
2298 const char *api_name
= "glGetSubroutineIndex";
2299 struct gl_shader_program
*shProg
;
2300 struct gl_program_resource
*res
;
2301 GLenum resource_type
;
2302 gl_shader_stage stage
;
2304 if (!_mesa_has_shader_subroutine(ctx
)) {
2305 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2309 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2310 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2314 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2318 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2319 if (!shProg
->_LinkedShaders
[stage
]) {
2320 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2324 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2325 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2330 return _mesa_program_resource_index(shProg
, res
);
2335 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2336 GLuint index
, GLenum pname
, GLint
*values
)
2338 GET_CURRENT_CONTEXT(ctx
);
2339 const char *api_name
= "glGetActiveSubroutineUniformiv";
2340 struct gl_shader_program
*shProg
;
2341 struct gl_shader
*sh
;
2342 gl_shader_stage stage
;
2343 struct gl_program_resource
*res
;
2344 const struct gl_uniform_storage
*uni
;
2345 GLenum resource_type
;
2348 if (!_mesa_has_shader_subroutine(ctx
)) {
2349 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2353 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2354 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2358 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2362 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2363 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2365 sh
= shProg
->_LinkedShaders
[stage
];
2367 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2371 if (index
>= sh
->NumSubroutineUniformTypes
) {
2372 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2377 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2378 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2381 values
[0] = uni
->num_compatible_subroutines
;
2385 case GL_COMPATIBLE_SUBROUTINES
: {
2386 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2390 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2391 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2392 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2393 if (fn
->types
[j
] == uni
->type
) {
2394 values
[count
++] = i
;
2402 case GL_UNIFORM_SIZE
:
2403 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2406 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2409 case GL_UNIFORM_NAME_LENGTH
:
2410 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2412 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2413 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2417 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2424 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2425 GLuint index
, GLsizei bufsize
,
2426 GLsizei
*length
, GLchar
*name
)
2428 GET_CURRENT_CONTEXT(ctx
);
2429 const char *api_name
= "glGetActiveSubroutineUniformName";
2430 struct gl_shader_program
*shProg
;
2431 GLenum resource_type
;
2432 gl_shader_stage stage
;
2434 if (!_mesa_has_shader_subroutine(ctx
)) {
2435 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2439 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2440 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2444 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2448 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2449 if (!shProg
->_LinkedShaders
[stage
]) {
2450 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2454 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2455 /* get program resource name */
2456 _mesa_get_program_resource_name(shProg
, resource_type
,
2458 length
, name
, api_name
);
2463 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2464 GLuint index
, GLsizei bufsize
,
2465 GLsizei
*length
, GLchar
*name
)
2467 GET_CURRENT_CONTEXT(ctx
);
2468 const char *api_name
= "glGetActiveSubroutineName";
2469 struct gl_shader_program
*shProg
;
2470 GLenum resource_type
;
2471 gl_shader_stage stage
;
2473 if (!_mesa_has_shader_subroutine(ctx
)) {
2474 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2478 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2479 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2483 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2487 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2488 if (!shProg
->_LinkedShaders
[stage
]) {
2489 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2492 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2493 _mesa_get_program_resource_name(shProg
, resource_type
,
2495 length
, name
, api_name
);
2500 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2501 const GLuint
*indices
)
2503 GET_CURRENT_CONTEXT(ctx
);
2504 const char *api_name
= "glUniformSubroutinesuiv";
2505 struct gl_shader_program
*shProg
;
2506 struct gl_shader
*sh
;
2507 gl_shader_stage stage
;
2510 if (!_mesa_has_shader_subroutine(ctx
)) {
2511 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2515 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2516 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2520 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2521 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2523 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2527 sh
= shProg
->_LinkedShaders
[stage
];
2529 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2533 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2534 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2540 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2546 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2549 for (j
= i
; j
< i
+ uni_count
; j
++) {
2550 struct gl_subroutine_function
*subfn
;
2551 if (indices
[j
] >= sh
->NumSubroutineFunctions
) {
2552 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2556 subfn
= &sh
->SubroutineFunctions
[indices
[j
]];
2557 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2558 if (subfn
->types
[k
] == uni
->type
)
2561 if (k
== subfn
->num_compat_types
) {
2562 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2569 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2572 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2578 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2580 memcpy(&uni
->storage
[0], &indices
[i
],
2581 sizeof(GLuint
) * uni_count
);
2583 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2590 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2593 GET_CURRENT_CONTEXT(ctx
);
2594 const char *api_name
= "glGetUniformSubroutineuiv";
2595 struct gl_shader_program
*shProg
;
2596 struct gl_shader
*sh
;
2597 gl_shader_stage stage
;
2599 if (!_mesa_has_shader_subroutine(ctx
)) {
2600 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2604 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2605 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2609 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2610 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2612 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2616 sh
= shProg
->_LinkedShaders
[stage
];
2618 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2622 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2623 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2628 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[location
];
2629 int offset
= location
- uni
->opaque
[stage
].index
;
2630 memcpy(params
, &uni
->storage
[offset
],
2637 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2638 GLenum pname
, GLint
*values
)
2640 GET_CURRENT_CONTEXT(ctx
);
2641 const char *api_name
= "glGetProgramStageiv";
2642 struct gl_shader_program
*shProg
;
2643 struct gl_shader
*sh
;
2644 gl_shader_stage stage
;
2646 if (!_mesa_has_shader_subroutine(ctx
)) {
2647 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2651 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2652 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2656 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2660 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2661 sh
= shProg
->_LinkedShaders
[stage
];
2663 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2668 case GL_ACTIVE_SUBROUTINES
:
2669 values
[0] = sh
->NumSubroutineFunctions
;
2671 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2672 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2674 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2675 values
[0] = sh
->NumSubroutineUniformTypes
;
2677 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2681 GLenum resource_type
;
2682 struct gl_program_resource
*res
;
2684 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2685 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2686 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2688 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2693 values
[0] = max_len
;
2696 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2700 GLenum resource_type
;
2701 struct gl_program_resource
*res
;
2703 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2704 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2705 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2707 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2708 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2714 values
[0] = max_len
;
2718 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2725 find_compat_subroutine(struct gl_shader
*sh
, const struct glsl_type
*type
)
2729 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2730 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2731 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2732 if (fn
->types
[j
] == type
)
2740 _mesa_shader_init_subroutine_defaults(struct gl_shader
*sh
)
2744 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2745 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2751 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2752 val
= find_compat_subroutine(sh
, uni
->type
);
2754 for (j
= 0; j
< uni_count
; j
++)
2755 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2757 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2762 _mesa_shader_program_init_subroutine_defaults(struct gl_shader_program
*shProg
)
2769 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2770 if (!shProg
->_LinkedShaders
[i
])
2773 _mesa_shader_init_subroutine_defaults(shProg
->_LinkedShaders
[i
]);