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 #define PATH_MAX _MAX_PATH
69 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
72 _mesa_get_shader_flags(void)
74 GLbitfield flags
= 0x0;
75 const char *env
= getenv("MESA_GLSL");
78 if (strstr(env
, "dump_on_error"))
79 flags
|= GLSL_DUMP_ON_ERROR
;
80 else if (strstr(env
, "dump"))
82 if (strstr(env
, "log"))
84 if (strstr(env
, "nopvert"))
85 flags
|= GLSL_NOP_VERT
;
86 if (strstr(env
, "nopfrag"))
87 flags
|= GLSL_NOP_FRAG
;
88 if (strstr(env
, "nopt"))
90 else if (strstr(env
, "opt"))
92 if (strstr(env
, "uniform"))
93 flags
|= GLSL_UNIFORMS
;
94 if (strstr(env
, "useprog"))
95 flags
|= GLSL_USE_PROG
;
96 if (strstr(env
, "errors"))
97 flags
|= GLSL_REPORT_ERRORS
;
104 * Memoized version of getenv("MESA_SHADER_CAPTURE_PATH").
107 _mesa_get_shader_capture_path(void)
109 static bool read_env_var
= false;
110 static const char *path
= NULL
;
113 path
= getenv("MESA_SHADER_CAPTURE_PATH");
116 strlen(path
) > PATH_MAX
- strlen("/fp-4294967295.shader_test")) {
117 GET_CURRENT_CONTEXT(ctx
);
118 _mesa_warning(ctx
, "MESA_SHADER_CAPTURE_PATH too long; ignoring "
119 "request to capture shaders");
128 * Initialize context's shader state.
131 _mesa_init_shader_state(struct gl_context
*ctx
)
133 /* Device drivers may override these to control what kind of instructions
134 * are generated by the GLSL compiler.
136 struct gl_shader_compiler_options options
;
140 memset(&options
, 0, sizeof(options
));
141 options
.MaxUnrollIterations
= 32;
142 options
.MaxIfDepth
= UINT_MAX
;
144 for (sh
= 0; sh
< MESA_SHADER_STAGES
; ++sh
)
145 memcpy(&ctx
->Const
.ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
147 ctx
->Shader
.Flags
= _mesa_get_shader_flags();
149 if (ctx
->Shader
.Flags
!= 0)
150 ctx
->Const
.GenerateTemporaryNames
= true;
152 /* Extended for ARB_separate_shader_objects */
153 ctx
->Shader
.RefCount
= 1;
154 mtx_init(&ctx
->Shader
.Mutex
, mtx_plain
);
156 ctx
->TessCtrlProgram
.patch_vertices
= 3;
157 for (i
= 0; i
< 4; ++i
)
158 ctx
->TessCtrlProgram
.patch_default_outer_level
[i
] = 1.0;
159 for (i
= 0; i
< 2; ++i
)
160 ctx
->TessCtrlProgram
.patch_default_inner_level
[i
] = 1.0;
165 * Free the per-context shader-related state.
168 _mesa_free_shader_state(struct gl_context
*ctx
)
171 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
172 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[i
],
175 _mesa_reference_shader_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
,
177 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
179 /* Extended for ARB_separate_shader_objects */
180 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
182 assert(ctx
->Shader
.RefCount
== 1);
183 mtx_destroy(&ctx
->Shader
.Mutex
);
188 * Copy string from <src> to <dst>, up to maxLength characters, returning
189 * length of <dst> in <length>.
190 * \param src the strings source
191 * \param maxLength max chars to copy
192 * \param length returns number of chars copied
193 * \param dst the string destination
196 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
197 GLsizei
*length
, const GLchar
*src
)
200 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
211 * Confirm that the a shader type is valid and supported by the implementation
213 * \param ctx Current GL context
214 * \param type Shader target
218 _mesa_validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
220 /* Note: when building built-in GLSL functions, this function may be
221 * invoked with ctx == NULL. In that case, we can only validate that it's
222 * a shader target we recognize, not that it's supported in the current
223 * context. But that's fine--we don't need any further validation than
224 * that when building built-in GLSL functions.
228 case GL_FRAGMENT_SHADER
:
229 return ctx
== NULL
|| ctx
->Extensions
.ARB_fragment_shader
;
230 case GL_VERTEX_SHADER
:
231 return ctx
== NULL
|| ctx
->Extensions
.ARB_vertex_shader
;
232 case GL_GEOMETRY_SHADER_ARB
:
233 return ctx
== NULL
|| _mesa_has_geometry_shaders(ctx
);
234 case GL_TESS_CONTROL_SHADER
:
235 case GL_TESS_EVALUATION_SHADER
:
236 return ctx
== NULL
|| _mesa_has_tessellation(ctx
);
237 case GL_COMPUTE_SHADER
:
238 return ctx
== NULL
|| _mesa_has_compute_shaders(ctx
);
246 is_program(struct gl_context
*ctx
, GLuint name
)
248 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
249 return shProg
? GL_TRUE
: GL_FALSE
;
254 is_shader(struct gl_context
*ctx
, GLuint name
)
256 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
257 return shader
? GL_TRUE
: GL_FALSE
;
262 * Attach shader to a shader program.
265 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
267 struct gl_shader_program
*shProg
;
268 struct gl_shader
*sh
;
271 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
273 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
277 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
282 n
= shProg
->NumShaders
;
283 for (i
= 0; i
< n
; i
++) {
284 if (shProg
->Shaders
[i
] == sh
) {
285 /* The shader is already attched to this program. The
286 * GL_ARB_shader_objects spec says:
288 * "The error INVALID_OPERATION is generated by AttachObjectARB
289 * if <obj> is already attached to <containerObj>."
291 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
293 } else if (same_type_disallowed
&&
294 shProg
->Shaders
[i
]->Stage
== sh
->Stage
) {
295 /* Shader with the same type is already attached to this program,
296 * OpenGL ES 2.0 and 3.0 specs say:
298 * "Multiple shader objects of the same type may not be attached
299 * to a single program object. [...] The error INVALID_OPERATION
300 * is generated if [...] another shader object of the same type
301 * as shader is already attached to program."
303 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
309 shProg
->Shaders
= realloc(shProg
->Shaders
,
310 (n
+ 1) * sizeof(struct gl_shader
*));
311 if (!shProg
->Shaders
) {
312 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
317 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
318 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
319 shProg
->NumShaders
++;
324 create_shader(struct gl_context
*ctx
, GLenum type
)
326 struct gl_shader
*sh
;
329 if (!_mesa_validate_shader_target(ctx
, type
)) {
330 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(%s)",
331 _mesa_enum_to_string(type
));
335 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
336 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
337 sh
= _mesa_new_shader(name
, _mesa_shader_enum_to_shader_stage(type
));
339 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, sh
);
340 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
347 create_shader_program(struct gl_context
*ctx
)
350 struct gl_shader_program
*shProg
;
352 _mesa_HashLockMutex(ctx
->Shared
->ShaderObjects
);
354 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
356 shProg
= _mesa_new_shader_program(name
);
358 _mesa_HashInsertLocked(ctx
->Shared
->ShaderObjects
, name
, shProg
);
360 assert(shProg
->RefCount
== 1);
362 _mesa_HashUnlockMutex(ctx
->Shared
->ShaderObjects
);
369 * Delete a shader program. Actually, just decrement the program's
370 * reference count and mark it as DeletePending.
371 * Used to implement glDeleteProgram() and glDeleteObjectARB().
374 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
377 * NOTE: deleting shaders/programs works a bit differently than
378 * texture objects (and buffer objects, etc). Shader/program
379 * handles/IDs exist in the hash table until the object is really
380 * deleted (refcount==0). With texture objects, the handle/ID is
381 * removed from the hash table in glDeleteTextures() while the tex
382 * object itself might linger until its refcount goes to zero.
384 struct gl_shader_program
*shProg
;
386 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
390 if (!shProg
->DeletePending
) {
391 shProg
->DeletePending
= GL_TRUE
;
393 /* effectively, decr shProg's refcount */
394 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
400 delete_shader(struct gl_context
*ctx
, GLuint shader
)
402 struct gl_shader
*sh
;
404 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
408 if (!sh
->DeletePending
) {
409 sh
->DeletePending
= GL_TRUE
;
411 /* effectively, decr sh's refcount */
412 _mesa_reference_shader(ctx
, &sh
, NULL
);
418 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
420 struct gl_shader_program
*shProg
;
424 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
428 n
= shProg
->NumShaders
;
430 for (i
= 0; i
< n
; i
++) {
431 if (shProg
->Shaders
[i
]->Name
== shader
) {
433 struct gl_shader
**newList
;
436 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
438 /* alloc new, smaller array */
439 newList
= malloc((n
- 1) * sizeof(struct gl_shader
*));
441 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
444 /* Copy old list entries to new list, skipping removed entry at [i] */
445 for (j
= 0; j
< i
; j
++) {
446 newList
[j
] = shProg
->Shaders
[j
];
449 newList
[j
++] = shProg
->Shaders
[i
];
452 /* Free old list and install new one */
453 free(shProg
->Shaders
);
454 shProg
->Shaders
= newList
;
455 shProg
->NumShaders
= n
- 1;
458 /* sanity check - make sure the new list's entries are sensible */
459 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
460 assert(shProg
->Shaders
[j
]->Stage
== MESA_SHADER_VERTEX
||
461 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_TESS_CTRL
||
462 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_TESS_EVAL
||
463 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_GEOMETRY
||
464 shProg
->Shaders
[j
]->Stage
== MESA_SHADER_FRAGMENT
);
465 assert(shProg
->Shaders
[j
]->RefCount
> 0);
476 if (is_shader(ctx
, shader
) || is_program(ctx
, shader
))
477 err
= GL_INVALID_OPERATION
;
479 err
= GL_INVALID_VALUE
;
480 _mesa_error(ctx
, err
, "glDetachShader(shader)");
487 * Return list of shaders attached to shader program.
490 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
491 GLsizei
*count
, GLuint
*obj
)
493 struct gl_shader_program
*shProg
;
496 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetAttachedShaders(maxCount < 0)");
501 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
505 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
506 obj
[i
] = shProg
->Shaders
[i
]->Name
;
515 * glGetHandleARB() - return ID/name of currently bound shader program.
518 get_handle(struct gl_context
*ctx
, GLenum pname
)
520 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
521 if (ctx
->_Shader
->ActiveProgram
)
522 return ctx
->_Shader
->ActiveProgram
->Name
;
527 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
534 * Check if a geometry shader query is valid at this time. If not, report an
535 * error and return false.
537 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
539 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
540 * are queried for a program which has not been linked successfully, or
541 * which does not contain objects to form a geometry shader, then an
542 * INVALID_OPERATION error is generated."
545 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
547 if (shProg
->LinkStatus
&&
548 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
552 _mesa_error(ctx
, GL_INVALID_OPERATION
,
553 "glGetProgramv(linked geometry shader required)");
559 * Check if a tessellation control shader query is valid at this time.
560 * If not, report an error and return false.
562 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
564 * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
565 * not been linked successfully, or which does not contain objects to
566 * form a tessellation control shader, then an INVALID_OPERATION error is
570 check_tcs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
572 if (shProg
->LinkStatus
&&
573 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
] != NULL
) {
577 _mesa_error(ctx
, GL_INVALID_OPERATION
,
578 "glGetProgramv(linked tessellation control shader required)");
584 * Check if a tessellation evaluation shader query is valid at this time.
585 * If not, report an error and return false.
587 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
589 * "If any of the pname values in this paragraph are queried for a program
590 * which has not been linked successfully, or which does not contain
591 * objects to form a tessellation evaluation shader, then an
592 * INVALID_OPERATION error is generated."
596 check_tes_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
598 if (shProg
->LinkStatus
&&
599 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
] != NULL
) {
603 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramv(linked tessellation "
604 "evaluation shader required)");
610 * glGetProgramiv() - get shader program state.
611 * Note that this is for GLSL shader programs, not ARB vertex/fragment
612 * programs (see glGetProgramivARB).
615 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
,
618 struct gl_shader_program
*shProg
619 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramiv(program)");
621 /* Is transform feedback available in this context?
624 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
625 || ctx
->API
== API_OPENGL_CORE
626 || _mesa_is_gles3(ctx
);
628 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
629 * and GL 3.2) are available in this context
631 const bool has_core_gs
= _mesa_has_geometry_shaders(ctx
);
632 const bool has_tess
= _mesa_has_tessellation(ctx
);
634 /* Are uniform buffer objects available in this context?
637 (ctx
->API
== API_OPENGL_COMPAT
&&
638 ctx
->Extensions
.ARB_uniform_buffer_object
)
639 || ctx
->API
== API_OPENGL_CORE
640 || _mesa_is_gles3(ctx
);
647 case GL_DELETE_STATUS
:
648 *params
= shProg
->DeletePending
;
651 *params
= shProg
->LinkStatus
;
653 case GL_VALIDATE_STATUS
:
654 *params
= shProg
->Validated
;
656 case GL_INFO_LOG_LENGTH
:
657 *params
= shProg
->InfoLog
? strlen(shProg
->InfoLog
) + 1 : 0;
659 case GL_ATTACHED_SHADERS
:
660 *params
= shProg
->NumShaders
;
662 case GL_ACTIVE_ATTRIBUTES
:
663 *params
= _mesa_count_active_attribs(shProg
);
665 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
666 *params
= _mesa_longest_attribute_name_length(shProg
);
668 case GL_ACTIVE_UNIFORMS
: {
670 const unsigned num_uniforms
=
671 shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
672 for (*params
= 0, i
= 0; i
< num_uniforms
; i
++) {
673 if (!shProg
->UniformStorage
[i
].is_shader_storage
)
678 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
681 const unsigned num_uniforms
=
682 shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
684 for (i
= 0; i
< num_uniforms
; i
++) {
685 if (shProg
->UniformStorage
[i
].is_shader_storage
)
688 /* Add one for the terminating NUL character for a non-array, and
689 * 4 for the "[0]" and the NUL for an array.
691 const GLint len
= strlen(shProg
->UniformStorage
[i
].name
) + 1 +
692 ((shProg
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
701 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
704 *params
= shProg
->TransformFeedback
.NumVarying
;
706 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
712 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
713 /* Add one for the terminating NUL character.
716 strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
725 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
728 *params
= shProg
->TransformFeedback
.BufferMode
;
730 case GL_GEOMETRY_VERTICES_OUT
:
733 if (check_gs_query(ctx
, shProg
)) {
734 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
735 info
.Geom
.VerticesOut
;
738 case GL_GEOMETRY_SHADER_INVOCATIONS
:
739 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
741 if (check_gs_query(ctx
, shProg
)) {
742 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
743 info
.Geom
.Invocations
;
746 case GL_GEOMETRY_INPUT_TYPE
:
749 if (check_gs_query(ctx
, shProg
)) {
750 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
754 case GL_GEOMETRY_OUTPUT_TYPE
:
757 if (check_gs_query(ctx
, shProg
)) {
758 *params
= shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->
759 info
.Geom
.OutputType
;
762 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
769 for (i
= 0; i
< shProg
->NumUniformBlocks
; i
++) {
770 /* Add one for the terminating NUL character.
772 const GLint len
= strlen(shProg
->UniformBlocks
[i
].Name
) + 1;
781 case GL_ACTIVE_UNIFORM_BLOCKS
:
785 *params
= shProg
->NumUniformBlocks
;
787 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
788 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
789 * only available with desktop OpenGL 3.0+ with the
790 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
792 * On desktop, we ignore the 3.0+ requirement because it is silly.
794 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
797 *params
= shProg
->BinaryRetreivableHint
;
799 case GL_PROGRAM_BINARY_LENGTH
:
802 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
803 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
806 *params
= shProg
->NumAtomicBuffers
;
808 case GL_COMPUTE_WORK_GROUP_SIZE
: {
810 if (!_mesa_has_compute_shaders(ctx
))
812 if (!shProg
->LinkStatus
) {
813 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
817 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
818 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
822 for (i
= 0; i
< 3; i
++)
823 params
[i
] = shProg
->Comp
.LocalSize
[i
];
826 case GL_PROGRAM_SEPARABLE
:
827 /* If the program has not been linked, return initial value 0. */
828 *params
= (shProg
->LinkStatus
== GL_FALSE
) ? 0 : shProg
->SeparateShader
;
831 /* ARB_tessellation_shader */
832 case GL_TESS_CONTROL_OUTPUT_VERTICES
:
835 if (check_tcs_query(ctx
, shProg
)) {
836 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->
837 info
.TessCtrl
.VerticesOut
;
840 case GL_TESS_GEN_MODE
:
843 if (check_tes_query(ctx
, shProg
)) {
844 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
845 info
.TessEval
.PrimitiveMode
;
848 case GL_TESS_GEN_SPACING
:
851 if (check_tes_query(ctx
, shProg
)) {
852 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
853 info
.TessEval
.Spacing
;
856 case GL_TESS_GEN_VERTEX_ORDER
:
859 if (check_tes_query(ctx
, shProg
)) {
860 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
861 info
.TessEval
.VertexOrder
;
864 case GL_TESS_GEN_POINT_MODE
:
867 if (check_tes_query(ctx
, shProg
)) {
868 *params
= shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->
869 info
.TessEval
.PointMode
;
876 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
877 _mesa_enum_to_string(pname
));
882 * glGetShaderiv() - get GLSL shader state
885 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
887 struct gl_shader
*shader
=
888 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
896 *params
= shader
->Type
;
898 case GL_DELETE_STATUS
:
899 *params
= shader
->DeletePending
;
901 case GL_COMPILE_STATUS
:
902 *params
= shader
->CompileStatus
;
904 case GL_INFO_LOG_LENGTH
:
905 *params
= shader
->InfoLog
? strlen(shader
->InfoLog
) + 1 : 0;
907 case GL_SHADER_SOURCE_LENGTH
:
908 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
911 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
918 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
919 GLsizei
*length
, GLchar
*infoLog
)
921 struct gl_shader_program
*shProg
;
923 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
924 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
926 * "If a negative number is provided where an argument of type sizei or
927 * sizeiptr is specified, an INVALID_VALUE error is generated."
930 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(bufSize < 0)");
934 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
935 "glGetProgramInfoLog(program)");
940 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
945 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
946 GLsizei
*length
, GLchar
*infoLog
)
948 struct gl_shader
*sh
;
950 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
951 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
953 * "If a negative number is provided where an argument of type sizei or
954 * sizeiptr is specified, an INVALID_VALUE error is generated."
957 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(bufSize < 0)");
961 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderInfoLog(shader)");
966 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
971 * Return shader source code.
974 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
975 GLsizei
*length
, GLchar
*sourceOut
)
977 struct gl_shader
*sh
;
980 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderSource(bufSize < 0)");
984 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
988 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
993 * Set/replace shader source code. A helper function used by
994 * glShaderSource[ARB].
997 shader_source(struct gl_shader
*sh
, const GLchar
*source
)
1001 /* free old shader source string and install new one */
1002 free((void *)sh
->Source
);
1003 sh
->Source
= source
;
1005 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
1014 _mesa_compile_shader(struct gl_context
*ctx
, struct gl_shader
*sh
)
1020 /* If the user called glCompileShader without first calling
1021 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
1023 sh
->CompileStatus
= GL_FALSE
;
1025 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1026 _mesa_log("GLSL source for %s shader %d:\n",
1027 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1028 _mesa_log("%s\n", sh
->Source
);
1031 /* this call will set the shader->CompileStatus field to indicate if
1032 * compilation was successful.
1034 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
1036 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
1037 _mesa_write_shader_to_file(sh
);
1040 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
1041 if (sh
->CompileStatus
) {
1042 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
1043 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
1046 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
1048 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
1049 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
1050 _mesa_log("%s\n", sh
->InfoLog
);
1055 if (!sh
->CompileStatus
) {
1056 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1057 _mesa_log("GLSL source for %s shader %d:\n",
1058 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1059 _mesa_log("%s\n", sh
->Source
);
1060 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1063 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1064 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1065 sh
->Name
, sh
->InfoLog
);
1072 * Link a program's shaders.
1075 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1080 /* From the ARB_transform_feedback2 specification:
1081 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1082 * the name of a program being used by one or more transform feedback
1083 * objects, even if the objects are not currently bound or are paused."
1085 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1086 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1087 "glLinkProgram(transform feedback is using the program)");
1091 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1093 _mesa_glsl_link_shader(ctx
, shProg
);
1095 /* Capture .shader_test files. */
1096 const char *capture_path
= _mesa_get_shader_capture_path();
1097 if (shProg
->Name
!= 0 && shProg
->Name
!= ~0 && capture_path
!= NULL
) {
1099 char filename
[PATH_MAX
];
1101 _mesa_snprintf(filename
, sizeof(filename
), "%s/%u.shader_test",
1102 capture_path
, shProg
->Name
);
1104 file
= fopen(filename
, "w");
1106 fprintf(file
, "[require]\nGLSL%s >= %u.%02u\n",
1107 shProg
->IsES
? " ES" : "",
1108 shProg
->Version
/ 100, shProg
->Version
% 100);
1109 if (shProg
->SeparateShader
)
1110 fprintf(file
, "GL_ARB_separate_shader_objects\nSSO ENABLED\n");
1111 fprintf(file
, "\n");
1113 for (unsigned i
= 0; i
< shProg
->NumShaders
; i
++) {
1114 fprintf(file
, "[%s shader]\n%s\n",
1115 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1116 shProg
->Shaders
[i
]->Source
);
1120 _mesa_warning(ctx
, "Failed to open %s", filename
);
1124 if (shProg
->LinkStatus
== GL_FALSE
&&
1125 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1126 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1127 shProg
->Name
, shProg
->InfoLog
);
1134 printf("Link %u shaders in program %u: %s\n",
1135 shProg
->NumShaders
, shProg
->Name
,
1136 shProg
->LinkStatus
? "Success" : "Failed");
1138 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1139 printf(" shader %u, stage %u\n",
1140 shProg
->Shaders
[i
]->Name
,
1141 shProg
->Shaders
[i
]->Stage
);
1148 * Print basic shader info (for debug).
1151 print_shader_info(const struct gl_shader_program
*shProg
)
1155 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1156 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1157 printf(" %s shader %u, checksum %u\n",
1158 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1159 shProg
->Shaders
[i
]->Name
,
1160 shProg
->Shaders
[i
]->SourceChecksum
);
1162 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1163 printf(" vert prog %u\n",
1164 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1165 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1166 printf(" frag prog %u\n",
1167 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1168 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1169 printf(" geom prog %u\n",
1170 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1171 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1172 printf(" tesc prog %u\n",
1173 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1174 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1175 printf(" tese prog %u\n",
1176 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1181 * Use the named shader program for subsequent glUniform calls
1184 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1187 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1188 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1189 "%s(program %u not linked)", caller
, shProg
->Name
);
1193 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1194 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1200 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1201 struct gl_shader_program
*shProg
,
1202 struct gl_pipeline_object
*shTarget
)
1204 struct gl_shader_program
**target
;
1206 target
= &shTarget
->CurrentProgram
[stage
];
1207 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1211 _mesa_shader_program_init_subroutine_defaults(shProg
);
1213 if (*target
!= shProg
) {
1214 /* Program is current, flush it */
1215 if (shTarget
== ctx
->_Shader
) {
1216 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1219 /* If the shader is also bound as the current rendering shader, unbind
1220 * it from that binding point as well. This ensures that the correct
1221 * semantics of glDeleteProgram are maintained.
1224 case MESA_SHADER_VERTEX
:
1225 case MESA_SHADER_TESS_CTRL
:
1226 case MESA_SHADER_TESS_EVAL
:
1227 case MESA_SHADER_GEOMETRY
:
1228 case MESA_SHADER_COMPUTE
:
1229 /* Empty for now. */
1231 case MESA_SHADER_FRAGMENT
:
1232 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1233 _mesa_reference_shader_program(ctx
,
1234 &ctx
->_Shader
->_CurrentFragmentProgram
,
1240 _mesa_reference_shader_program(ctx
, target
, shProg
);
1247 * Use the named shader program for subsequent rendering.
1250 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1253 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1254 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1255 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1260 * Do validation of the given shader program.
1261 * \param errMsg returns error message if validation fails.
1262 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1265 validate_shader_program(const struct gl_shader_program
*shProg
,
1268 if (!shProg
->LinkStatus
) {
1272 /* From the GL spec, a program is invalid if any of these are true:
1274 any two active samplers in the current program object are of
1275 different types, but refer to the same texture image unit,
1277 any active sampler in the current program object refers to a texture
1278 image unit where fixed-function fragment processing accesses a
1279 texture target that does not match the sampler type, or
1281 the sum of the number of active samplers in the program and the
1282 number of texture image units enabled for fixed-function fragment
1283 processing exceeds the combined limit on the total number of texture
1284 image units allowed.
1288 * Check: any two active samplers in the current program object are of
1289 * different types, but refer to the same texture image unit,
1291 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1299 * Called via glValidateProgram()
1302 validate_program(struct gl_context
*ctx
, GLuint program
)
1304 struct gl_shader_program
*shProg
;
1305 char errMsg
[100] = "";
1307 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1312 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1313 if (!shProg
->Validated
) {
1314 /* update info log */
1315 if (shProg
->InfoLog
) {
1316 ralloc_free(shProg
->InfoLog
);
1318 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1325 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1327 GET_CURRENT_CONTEXT(ctx
);
1328 attach_shader(ctx
, program
, shader
);
1333 _mesa_AttachShader(GLuint program
, GLuint shader
)
1335 GET_CURRENT_CONTEXT(ctx
);
1336 attach_shader(ctx
, program
, shader
);
1341 _mesa_CompileShader(GLuint shaderObj
)
1343 GET_CURRENT_CONTEXT(ctx
);
1344 if (MESA_VERBOSE
& VERBOSE_API
)
1345 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1346 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1347 "glCompileShader"));
1352 _mesa_CreateShader(GLenum type
)
1354 GET_CURRENT_CONTEXT(ctx
);
1355 if (MESA_VERBOSE
& VERBOSE_API
)
1356 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1357 return create_shader(ctx
, type
);
1361 GLhandleARB GLAPIENTRY
1362 _mesa_CreateShaderObjectARB(GLenum type
)
1364 GET_CURRENT_CONTEXT(ctx
);
1365 return create_shader(ctx
, type
);
1370 _mesa_CreateProgram(void)
1372 GET_CURRENT_CONTEXT(ctx
);
1373 if (MESA_VERBOSE
& VERBOSE_API
)
1374 _mesa_debug(ctx
, "glCreateProgram\n");
1375 return create_shader_program(ctx
);
1379 GLhandleARB GLAPIENTRY
1380 _mesa_CreateProgramObjectARB(void)
1382 GET_CURRENT_CONTEXT(ctx
);
1383 return create_shader_program(ctx
);
1388 _mesa_DeleteObjectARB(GLhandleARB obj
)
1390 if (MESA_VERBOSE
& VERBOSE_API
) {
1391 GET_CURRENT_CONTEXT(ctx
);
1392 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1396 GET_CURRENT_CONTEXT(ctx
);
1397 FLUSH_VERTICES(ctx
, 0);
1398 if (is_program(ctx
, obj
)) {
1399 delete_shader_program(ctx
, obj
);
1401 else if (is_shader(ctx
, obj
)) {
1402 delete_shader(ctx
, obj
);
1412 _mesa_DeleteProgram(GLuint name
)
1415 GET_CURRENT_CONTEXT(ctx
);
1416 FLUSH_VERTICES(ctx
, 0);
1417 delete_shader_program(ctx
, name
);
1423 _mesa_DeleteShader(GLuint name
)
1426 GET_CURRENT_CONTEXT(ctx
);
1427 FLUSH_VERTICES(ctx
, 0);
1428 delete_shader(ctx
, name
);
1434 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1436 GET_CURRENT_CONTEXT(ctx
);
1437 detach_shader(ctx
, program
, shader
);
1442 _mesa_DetachShader(GLuint program
, GLuint shader
)
1444 GET_CURRENT_CONTEXT(ctx
);
1445 detach_shader(ctx
, program
, shader
);
1450 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1451 GLsizei
* count
, GLhandleARB
* obj
)
1453 GET_CURRENT_CONTEXT(ctx
);
1454 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1459 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1460 GLsizei
*count
, GLuint
*obj
)
1462 GET_CURRENT_CONTEXT(ctx
);
1463 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1468 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1469 GLcharARB
* infoLog
)
1471 GET_CURRENT_CONTEXT(ctx
);
1472 if (is_program(ctx
, object
)) {
1473 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1475 else if (is_shader(ctx
, object
)) {
1476 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1479 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1485 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1487 GET_CURRENT_CONTEXT(ctx
);
1488 /* Implement in terms of GetProgramiv, GetShaderiv */
1489 if (is_program(ctx
, object
)) {
1490 if (pname
== GL_OBJECT_TYPE_ARB
) {
1491 *params
= GL_PROGRAM_OBJECT_ARB
;
1494 get_programiv(ctx
, object
, pname
, params
);
1497 else if (is_shader(ctx
, object
)) {
1498 if (pname
== GL_OBJECT_TYPE_ARB
) {
1499 *params
= GL_SHADER_OBJECT_ARB
;
1502 get_shaderiv(ctx
, object
, pname
, params
);
1506 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1512 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1515 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1516 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1517 params
[0] = (GLfloat
) iparams
[0];
1522 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1524 GET_CURRENT_CONTEXT(ctx
);
1525 get_programiv(ctx
, program
, pname
, params
);
1530 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1532 GET_CURRENT_CONTEXT(ctx
);
1533 get_shaderiv(ctx
, shader
, pname
, params
);
1538 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1539 GLsizei
*length
, GLchar
*infoLog
)
1541 GET_CURRENT_CONTEXT(ctx
);
1542 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1547 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1548 GLsizei
*length
, GLchar
*infoLog
)
1550 GET_CURRENT_CONTEXT(ctx
);
1551 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1556 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1557 GLsizei
*length
, GLchar
*sourceOut
)
1559 GET_CURRENT_CONTEXT(ctx
);
1560 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1564 GLhandleARB GLAPIENTRY
1565 _mesa_GetHandleARB(GLenum pname
)
1567 GET_CURRENT_CONTEXT(ctx
);
1568 return get_handle(ctx
, pname
);
1572 GLboolean GLAPIENTRY
1573 _mesa_IsProgram(GLuint name
)
1575 GET_CURRENT_CONTEXT(ctx
);
1576 return is_program(ctx
, name
);
1580 GLboolean GLAPIENTRY
1581 _mesa_IsShader(GLuint name
)
1583 GET_CURRENT_CONTEXT(ctx
);
1584 return is_shader(ctx
, name
);
1589 _mesa_LinkProgram(GLuint programObj
)
1591 GET_CURRENT_CONTEXT(ctx
);
1592 if (MESA_VERBOSE
& VERBOSE_API
)
1593 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1594 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1598 #if defined(HAVE_SHA1)
1600 * Generate a SHA-1 hash value string for given source string.
1603 generate_sha1(const char *source
, char sha_str
[64])
1605 unsigned char sha
[20];
1606 _mesa_sha1_compute(source
, strlen(source
), sha
);
1607 _mesa_sha1_format(sha_str
, sha
);
1611 * Construct a full path for shader replacement functionality using
1614 * <path>/<stage prefix>_<CHECKSUM>.glsl
1617 construct_name(const gl_shader_stage stage
, const char *source
,
1618 const char *path
, char *name
, unsigned length
)
1621 static const char *types
[] = {
1622 "VS", "TC", "TE", "GS", "FS", "CS",
1625 generate_sha1(source
, sha
);
1626 _mesa_snprintf(name
, length
, "%s/%s_%s.glsl", path
, types
[stage
],
1631 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1634 dump_shader(const gl_shader_stage stage
, const char *source
)
1636 char name
[PATH_MAX
];
1637 static bool path_exists
= true;
1644 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1646 path_exists
= false;
1650 construct_name(stage
, source
, dump_path
, name
, PATH_MAX
);
1652 f
= fopen(name
, "w");
1657 GET_CURRENT_CONTEXT(ctx
);
1658 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1664 * Read shader source code from a file.
1665 * Useful for debugging to override an app's shader.
1668 read_shader(const gl_shader_stage stage
, const char *source
)
1670 char name
[PATH_MAX
];
1672 static bool path_exists
= true;
1673 int len
, shader_size
= 0;
1680 read_path
= getenv("MESA_SHADER_READ_PATH");
1682 path_exists
= false;
1686 construct_name(stage
, source
, read_path
, name
, PATH_MAX
);
1688 f
= fopen(name
, "r");
1692 /* allocate enough room for the entire shader */
1693 fseek(f
, 0, SEEK_END
);
1694 shader_size
= ftell(f
);
1696 assert(shader_size
);
1698 /* add one for terminating zero */
1701 buffer
= malloc(shader_size
);
1704 len
= fread(buffer
, 1, shader_size
, f
);
1711 #endif /* HAVE_SHA1 */
1714 * Called via glShaderSource() and glShaderSourceARB() API functions.
1715 * Basically, concatenate the source code strings into one long string
1716 * and pass it to _mesa_shader_source().
1719 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1720 const GLchar
* const * string
, const GLint
* length
)
1722 GET_CURRENT_CONTEXT(ctx
);
1724 GLsizei i
, totalLength
;
1726 struct gl_shader
*sh
;
1728 #if defined(HAVE_SHA1)
1729 GLcharARB
*replacement
;
1730 #endif /* HAVE_SHA1 */
1732 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1736 if (string
== NULL
) {
1737 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1742 * This array holds offsets of where the appropriate string ends, thus the
1743 * last element will be set to the total length of the source code.
1745 offsets
= malloc(count
* sizeof(GLint
));
1746 if (offsets
== NULL
) {
1747 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1751 for (i
= 0; i
< count
; i
++) {
1752 if (string
[i
] == NULL
) {
1753 free((GLvoid
*) offsets
);
1754 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1755 "glShaderSourceARB(null string)");
1758 if (length
== NULL
|| length
[i
] < 0)
1759 offsets
[i
] = strlen(string
[i
]);
1761 offsets
[i
] = length
[i
];
1762 /* accumulate string lengths */
1764 offsets
[i
] += offsets
[i
- 1];
1767 /* Total length of source string is sum off all strings plus two.
1768 * One extra byte for terminating zero, another extra byte to silence
1769 * valgrind warnings in the parser/grammer code.
1771 totalLength
= offsets
[count
- 1] + 2;
1772 source
= malloc(totalLength
* sizeof(GLcharARB
));
1773 if (source
== NULL
) {
1774 free((GLvoid
*) offsets
);
1775 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1779 for (i
= 0; i
< count
; i
++) {
1780 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1781 memcpy(source
+ start
, string
[i
],
1782 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1784 source
[totalLength
- 1] = '\0';
1785 source
[totalLength
- 2] = '\0';
1787 #if defined(HAVE_SHA1)
1788 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1789 * if corresponding entry found from MESA_SHADER_READ_PATH.
1791 dump_shader(sh
->Stage
, source
);
1793 replacement
= read_shader(sh
->Stage
, source
);
1796 source
= replacement
;
1798 #endif /* HAVE_SHA1 */
1800 shader_source(sh
, source
);
1807 _mesa_UseProgram(GLuint program
)
1809 GET_CURRENT_CONTEXT(ctx
);
1810 struct gl_shader_program
*shProg
;
1812 if (MESA_VERBOSE
& VERBOSE_API
)
1813 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1815 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1816 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1817 "glUseProgram(transform feedback active)");
1822 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1826 if (!shProg
->LinkStatus
) {
1827 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1828 "glUseProgram(program %u not linked)", program
);
1833 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1834 print_shader_info(shProg
);
1841 /* The ARB_separate_shader_object spec says:
1843 * "The executable code for an individual shader stage is taken from
1844 * the current program for that stage. If there is a current program
1845 * object established by UseProgram, that program is considered current
1846 * for all stages. Otherwise, if there is a bound program pipeline
1847 * object (section 2.14.PPO), the program bound to the appropriate
1848 * stage of the pipeline object is considered current."
1851 /* Attach shader state to the binding point */
1852 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1853 /* Update the program */
1854 _mesa_use_program(ctx
, shProg
);
1856 /* Must be done first: detach the progam */
1857 _mesa_use_program(ctx
, shProg
);
1858 /* Unattach shader_state binding point */
1859 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1860 /* If a pipeline was bound, rebind it */
1861 if (ctx
->Pipeline
.Current
) {
1862 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1869 _mesa_ValidateProgram(GLuint program
)
1871 GET_CURRENT_CONTEXT(ctx
);
1872 validate_program(ctx
, program
);
1877 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1880 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1881 GLint
* range
, GLint
* precision
)
1883 const struct gl_program_constants
*limits
;
1884 const struct gl_precision
*p
;
1885 GET_CURRENT_CONTEXT(ctx
);
1887 switch (shadertype
) {
1888 case GL_VERTEX_SHADER
:
1889 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1891 case GL_FRAGMENT_SHADER
:
1892 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1895 _mesa_error(ctx
, GL_INVALID_ENUM
,
1896 "glGetShaderPrecisionFormat(shadertype)");
1900 switch (precisiontype
) {
1902 p
= &limits
->LowFloat
;
1904 case GL_MEDIUM_FLOAT
:
1905 p
= &limits
->MediumFloat
;
1908 p
= &limits
->HighFloat
;
1911 p
= &limits
->LowInt
;
1914 p
= &limits
->MediumInt
;
1917 p
= &limits
->HighInt
;
1920 _mesa_error(ctx
, GL_INVALID_ENUM
,
1921 "glGetShaderPrecisionFormat(precisiontype)");
1925 range
[0] = p
->RangeMin
;
1926 range
[1] = p
->RangeMax
;
1927 precision
[0] = p
->Precision
;
1932 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1935 _mesa_ReleaseShaderCompiler(void)
1937 _mesa_destroy_shader_compiler_caches();
1942 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1945 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1946 const void* binary
, GLint length
)
1948 GET_CURRENT_CONTEXT(ctx
);
1950 (void) binaryformat
;
1953 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1954 * page 88 of the OpenGL 4.5 specs state:
1956 * "An INVALID_VALUE error is generated if count or length is negative.
1957 * An INVALID_ENUM error is generated if binaryformat is not a supported
1958 * format returned in SHADER_BINARY_FORMATS."
1960 if (n
< 0 || length
< 0) {
1961 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1965 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1970 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1971 GLenum
*binaryFormat
, GLvoid
*binary
)
1973 struct gl_shader_program
*shProg
;
1974 GLsizei length_dummy
;
1975 GET_CURRENT_CONTEXT(ctx
);
1978 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1982 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1986 /* The ARB_get_program_binary spec says:
1988 * "If <length> is NULL, then no length is returned."
1990 * Ensure that length always points to valid storage to avoid multiple NULL
1991 * pointer checks below.
1994 length
= &length_dummy
;
1997 /* The ARB_get_program_binary spec says:
1999 * "When a program object's LINK_STATUS is FALSE, its program binary
2000 * length is zero, and a call to GetProgramBinary will generate an
2001 * INVALID_OPERATION error.
2003 if (!shProg
->LinkStatus
) {
2004 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2005 "glGetProgramBinary(program %u not linked)",
2012 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2013 "glGetProgramBinary(driver supports zero binary formats)");
2015 (void) binaryFormat
;
2020 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
2021 const GLvoid
*binary
, GLsizei length
)
2023 struct gl_shader_program
*shProg
;
2024 GET_CURRENT_CONTEXT(ctx
);
2026 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
2030 (void) binaryFormat
;
2033 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2035 * "If a negative number is provided where an argument of type sizei or
2036 * sizeiptr is specified, an INVALID_VALUE error is generated."
2039 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
2043 /* The ARB_get_program_binary spec says:
2045 * "<binaryFormat> and <binary> must be those returned by a previous
2046 * call to GetProgramBinary, and <length> must be the length of the
2047 * program binary as returned by GetProgramBinary or GetProgramiv with
2048 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2049 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2052 * Since any value of binaryFormat passed "is not one of those specified as
2053 * allowable for [this] command, an INVALID_ENUM error is generated."
2055 shProg
->LinkStatus
= GL_FALSE
;
2056 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
2061 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
2063 struct gl_shader_program
*shProg
;
2064 GET_CURRENT_CONTEXT(ctx
);
2066 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
2067 "glProgramParameteri");
2072 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
2073 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2074 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2075 * even be in the dispatch table, so we shouldn't need to expclicitly
2078 * On desktop, we ignore the 3.0+ requirement because it is silly.
2081 /* The ARB_get_program_binary extension spec says:
2083 * "An INVALID_VALUE error is generated if the <value> argument to
2084 * ProgramParameteri is not TRUE or FALSE."
2086 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2090 /* No need to notify the driver. Any changes will actually take effect
2091 * the next time the shader is linked.
2093 * The ARB_get_program_binary extension spec says:
2095 * "To indicate that a program binary is likely to be retrieved,
2096 * ProgramParameteri should be called with <pname>
2097 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2098 * will not be in effect until the next time LinkProgram or
2099 * ProgramBinary has been called successfully."
2101 * The resloution of issue 9 in the extension spec also says:
2103 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2104 * to indicate to the GL implementation that this program will
2105 * likely be saved with GetProgramBinary at some point. This will
2106 * give the GL implementation the opportunity to track any state
2107 * changes made to the program before being saved such that when it
2108 * is loaded again a recompile can be avoided."
2110 shProg
->BinaryRetreivableHint
= value
;
2113 case GL_PROGRAM_SEPARABLE
:
2114 /* Spec imply that the behavior is the same as ARB_get_program_binary
2115 * Chapter 7.3 Program Objects
2117 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2120 shProg
->SeparateShader
= value
;
2124 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2125 _mesa_enum_to_string(pname
));
2130 _mesa_error(ctx
, GL_INVALID_VALUE
,
2131 "glProgramParameteri(pname=%s, value=%d): "
2132 "value must be 0 or 1.",
2133 _mesa_enum_to_string(pname
),
2139 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2140 struct gl_shader_program
*shProg
,
2141 struct gl_pipeline_object
*shTarget
)
2143 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2144 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2149 * Copy program-specific data generated by linking from the gl_shader_program
2150 * object to a specific gl_program object.
2153 _mesa_copy_linked_program_data(gl_shader_stage type
,
2154 const struct gl_shader_program
*src
,
2155 struct gl_program
*dst
)
2158 case MESA_SHADER_VERTEX
:
2159 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2160 dst
->CullDistanceArraySize
= src
->Vert
.CullDistanceArraySize
;
2162 case MESA_SHADER_TESS_CTRL
: {
2163 struct gl_tess_ctrl_program
*dst_tcp
=
2164 (struct gl_tess_ctrl_program
*) dst
;
2165 dst_tcp
->VerticesOut
= src
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->
2166 info
.TessCtrl
.VerticesOut
;
2169 case MESA_SHADER_TESS_EVAL
: {
2170 struct gl_tess_eval_program
*dst_tep
=
2171 (struct gl_tess_eval_program
*) dst
;
2172 struct gl_linked_shader
*tes_sh
=
2173 src
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
];
2175 dst_tep
->PrimitiveMode
= tes_sh
->info
.TessEval
.PrimitiveMode
;
2176 dst_tep
->Spacing
= tes_sh
->info
.TessEval
.Spacing
;
2177 dst_tep
->VertexOrder
= tes_sh
->info
.TessEval
.VertexOrder
;
2178 dst_tep
->PointMode
= tes_sh
->info
.TessEval
.PointMode
;
2179 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2180 dst
->CullDistanceArraySize
= src
->TessEval
.CullDistanceArraySize
;
2183 case MESA_SHADER_GEOMETRY
: {
2184 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
2185 struct gl_linked_shader
*geom_sh
=
2186 src
->_LinkedShaders
[MESA_SHADER_GEOMETRY
];
2188 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
2189 dst_gp
->VerticesOut
= geom_sh
->info
.Geom
.VerticesOut
;
2190 dst_gp
->Invocations
= geom_sh
->info
.Geom
.Invocations
;
2191 dst_gp
->InputType
= geom_sh
->info
.Geom
.InputType
;
2192 dst_gp
->OutputType
= geom_sh
->info
.Geom
.OutputType
;
2193 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2194 dst
->CullDistanceArraySize
= src
->Geom
.CullDistanceArraySize
;
2195 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;
2196 dst_gp
->UsesStreams
= src
->Geom
.UsesStreams
;
2199 case MESA_SHADER_FRAGMENT
: {
2200 struct gl_fragment_program
*dst_fp
= (struct gl_fragment_program
*) dst
;
2201 dst_fp
->FragDepthLayout
= src
->FragDepthLayout
;
2204 case MESA_SHADER_COMPUTE
: {
2205 struct gl_compute_program
*dst_cp
= (struct gl_compute_program
*) dst
;
2207 for (i
= 0; i
< 3; i
++)
2208 dst_cp
->LocalSize
[i
] = src
->Comp
.LocalSize
[i
];
2209 dst_cp
->SharedSize
= src
->Comp
.SharedSize
;
2218 * ARB_separate_shader_objects: Compile & Link Program
2221 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2222 const GLchar
* const *strings
)
2224 GET_CURRENT_CONTEXT(ctx
);
2226 const GLuint shader
= create_shader(ctx
, type
);
2230 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2231 * GL_INVALID_VALUE should be generated if count < 0
2234 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2239 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2241 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2242 _mesa_compile_shader(ctx
, sh
);
2244 program
= create_shader_program(ctx
);
2246 struct gl_shader_program
*shProg
;
2247 GLint compiled
= GL_FALSE
;
2249 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2251 shProg
->SeparateShader
= GL_TRUE
;
2253 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2255 attach_shader(ctx
, program
, shader
);
2256 _mesa_link_program(ctx
, shProg
);
2257 detach_shader(ctx
, program
, shader
);
2261 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2262 append
-error
-to
-info
-log
;
2263 shProg
->LinkStatus
= GL_FALSE
;
2268 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2271 delete_shader(ctx
, shader
);
2279 * For GL_ARB_tessellation_shader
2281 extern void GLAPIENTRY
2282 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2284 GET_CURRENT_CONTEXT(ctx
);
2286 if (!_mesa_has_tessellation(ctx
)) {
2287 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2291 if (pname
!= GL_PATCH_VERTICES
) {
2292 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2296 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2297 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2301 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2305 extern void GLAPIENTRY
2306 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2308 GET_CURRENT_CONTEXT(ctx
);
2310 if (!_mesa_has_tessellation(ctx
)) {
2311 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2316 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2317 FLUSH_VERTICES(ctx
, 0);
2318 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2319 4 * sizeof(GLfloat
));
2320 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2322 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2323 FLUSH_VERTICES(ctx
, 0);
2324 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2325 2 * sizeof(GLfloat
));
2326 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2329 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2335 * ARB_shader_subroutine
2338 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2341 GET_CURRENT_CONTEXT(ctx
);
2342 const char *api_name
= "glGetSubroutineUniformLocation";
2343 struct gl_shader_program
*shProg
;
2344 GLenum resource_type
;
2345 gl_shader_stage stage
;
2347 if (!_mesa_has_shader_subroutine(ctx
)) {
2348 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2352 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2353 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2357 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2361 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2362 if (!shProg
->_LinkedShaders
[stage
]) {
2363 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2367 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2368 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2372 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2375 GET_CURRENT_CONTEXT(ctx
);
2376 const char *api_name
= "glGetSubroutineIndex";
2377 struct gl_shader_program
*shProg
;
2378 struct gl_program_resource
*res
;
2379 GLenum resource_type
;
2380 gl_shader_stage stage
;
2382 if (!_mesa_has_shader_subroutine(ctx
)) {
2383 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2387 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2388 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2392 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2396 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2397 if (!shProg
->_LinkedShaders
[stage
]) {
2398 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2402 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2403 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2408 return _mesa_program_resource_index(shProg
, res
);
2413 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2414 GLuint index
, GLenum pname
, GLint
*values
)
2416 GET_CURRENT_CONTEXT(ctx
);
2417 const char *api_name
= "glGetActiveSubroutineUniformiv";
2418 struct gl_shader_program
*shProg
;
2419 struct gl_linked_shader
*sh
;
2420 gl_shader_stage stage
;
2421 struct gl_program_resource
*res
;
2422 const struct gl_uniform_storage
*uni
;
2423 GLenum resource_type
;
2426 if (!_mesa_has_shader_subroutine(ctx
)) {
2427 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2431 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2432 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2436 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2440 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2441 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2443 sh
= shProg
->_LinkedShaders
[stage
];
2445 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2449 if (index
>= sh
->NumSubroutineUniforms
) {
2450 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2455 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2456 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2459 values
[0] = uni
->num_compatible_subroutines
;
2463 case GL_COMPATIBLE_SUBROUTINES
: {
2464 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2468 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2469 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2470 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2471 if (fn
->types
[j
] == uni
->type
) {
2472 values
[count
++] = i
;
2480 case GL_UNIFORM_SIZE
:
2481 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2484 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2487 case GL_UNIFORM_NAME_LENGTH
:
2488 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2490 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2491 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2495 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2502 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2503 GLuint index
, GLsizei bufsize
,
2504 GLsizei
*length
, GLchar
*name
)
2506 GET_CURRENT_CONTEXT(ctx
);
2507 const char *api_name
= "glGetActiveSubroutineUniformName";
2508 struct gl_shader_program
*shProg
;
2509 GLenum resource_type
;
2510 gl_shader_stage stage
;
2512 if (!_mesa_has_shader_subroutine(ctx
)) {
2513 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2517 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2518 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2522 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2526 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2527 if (!shProg
->_LinkedShaders
[stage
]) {
2528 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2532 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2533 /* get program resource name */
2534 _mesa_get_program_resource_name(shProg
, resource_type
,
2536 length
, name
, api_name
);
2541 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2542 GLuint index
, GLsizei bufsize
,
2543 GLsizei
*length
, GLchar
*name
)
2545 GET_CURRENT_CONTEXT(ctx
);
2546 const char *api_name
= "glGetActiveSubroutineName";
2547 struct gl_shader_program
*shProg
;
2548 GLenum resource_type
;
2549 gl_shader_stage stage
;
2551 if (!_mesa_has_shader_subroutine(ctx
)) {
2552 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2556 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2557 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2561 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2565 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2566 if (!shProg
->_LinkedShaders
[stage
]) {
2567 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2570 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2571 _mesa_get_program_resource_name(shProg
, resource_type
,
2573 length
, name
, api_name
);
2578 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2579 const GLuint
*indices
)
2581 GET_CURRENT_CONTEXT(ctx
);
2582 const char *api_name
= "glUniformSubroutinesuiv";
2583 struct gl_shader_program
*shProg
;
2584 struct gl_linked_shader
*sh
;
2585 gl_shader_stage stage
;
2588 if (!_mesa_has_shader_subroutine(ctx
)) {
2589 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2593 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2594 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2598 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2599 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2601 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2605 sh
= shProg
->_LinkedShaders
[stage
];
2607 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2611 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2612 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2618 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2624 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2627 for (j
= i
; j
< i
+ uni_count
; j
++) {
2628 struct gl_subroutine_function
*subfn
= NULL
;
2629 if (indices
[j
] > sh
->MaxSubroutineFunctionIndex
) {
2630 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2634 for (f
= 0; f
< sh
->NumSubroutineFunctions
; f
++) {
2635 if (sh
->SubroutineFunctions
[f
].index
== indices
[j
])
2636 subfn
= &sh
->SubroutineFunctions
[f
];
2643 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2644 if (subfn
->types
[k
] == uni
->type
)
2647 if (k
== subfn
->num_compat_types
) {
2648 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2655 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2658 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2664 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2666 memcpy(&uni
->storage
[0], &indices
[i
],
2667 sizeof(GLuint
) * uni_count
);
2669 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2676 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2679 GET_CURRENT_CONTEXT(ctx
);
2680 const char *api_name
= "glGetUniformSubroutineuiv";
2681 struct gl_shader_program
*shProg
;
2682 struct gl_linked_shader
*sh
;
2683 gl_shader_stage stage
;
2685 if (!_mesa_has_shader_subroutine(ctx
)) {
2686 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2690 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2691 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2695 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2696 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2698 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2702 sh
= shProg
->_LinkedShaders
[stage
];
2704 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2708 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2709 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2714 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[location
];
2715 int offset
= location
- uni
->opaque
[stage
].index
;
2716 memcpy(params
, &uni
->storage
[offset
],
2723 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2724 GLenum pname
, GLint
*values
)
2726 GET_CURRENT_CONTEXT(ctx
);
2727 const char *api_name
= "glGetProgramStageiv";
2728 struct gl_shader_program
*shProg
;
2729 struct gl_linked_shader
*sh
;
2730 gl_shader_stage stage
;
2732 if (!_mesa_has_shader_subroutine(ctx
)) {
2733 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2737 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2738 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2742 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2746 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2747 sh
= shProg
->_LinkedShaders
[stage
];
2749 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2754 case GL_ACTIVE_SUBROUTINES
:
2755 values
[0] = sh
->NumSubroutineFunctions
;
2757 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2758 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2760 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2761 values
[0] = sh
->NumSubroutineUniforms
;
2763 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2767 GLenum resource_type
;
2768 struct gl_program_resource
*res
;
2770 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2771 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2772 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2774 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2779 values
[0] = max_len
;
2782 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2786 GLenum resource_type
;
2787 struct gl_program_resource
*res
;
2789 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2790 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2791 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2793 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2794 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2800 values
[0] = max_len
;
2804 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2811 find_compat_subroutine(struct gl_linked_shader
*sh
,
2812 const struct glsl_type
*type
)
2816 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2817 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2818 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2819 if (fn
->types
[j
] == type
)
2827 _mesa_shader_init_subroutine_defaults(struct gl_linked_shader
*sh
)
2831 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2832 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2838 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2839 val
= find_compat_subroutine(sh
, uni
->type
);
2841 for (j
= 0; j
< uni_count
; j
++)
2842 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2844 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2849 _mesa_shader_program_init_subroutine_defaults(struct gl_shader_program
*shProg
)
2856 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2857 if (!shProg
->_LinkedShaders
[i
])
2860 _mesa_shader_init_subroutine_defaults(shProg
->_LinkedShaders
[i
]);