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
) {
1043 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
1044 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
1046 _mesa_log("No GLSL IR for shader %d (shader may be from "
1047 "cache)\n", sh
->Name
);
1051 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
1053 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
1054 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
1055 _mesa_log("%s\n", sh
->InfoLog
);
1060 if (!sh
->CompileStatus
) {
1061 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1062 _mesa_log("GLSL source for %s shader %d:\n",
1063 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1064 _mesa_log("%s\n", sh
->Source
);
1065 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1068 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1069 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1070 sh
->Name
, sh
->InfoLog
);
1077 * Link a program's shaders.
1080 _mesa_link_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1085 /* From the ARB_transform_feedback2 specification:
1086 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1087 * the name of a program being used by one or more transform feedback
1088 * objects, even if the objects are not currently bound or are paused."
1090 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1091 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1092 "glLinkProgram(transform feedback is using the program)");
1096 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1098 _mesa_glsl_link_shader(ctx
, shProg
);
1100 /* Capture .shader_test files. */
1101 const char *capture_path
= _mesa_get_shader_capture_path();
1102 if (shProg
->Name
!= 0 && shProg
->Name
!= ~0 && capture_path
!= NULL
) {
1104 char filename
[PATH_MAX
];
1106 _mesa_snprintf(filename
, sizeof(filename
), "%s/%u.shader_test",
1107 capture_path
, shProg
->Name
);
1109 file
= fopen(filename
, "w");
1111 fprintf(file
, "[require]\nGLSL%s >= %u.%02u\n",
1112 shProg
->IsES
? " ES" : "",
1113 shProg
->Version
/ 100, shProg
->Version
% 100);
1114 if (shProg
->SeparateShader
)
1115 fprintf(file
, "GL_ARB_separate_shader_objects\nSSO ENABLED\n");
1116 fprintf(file
, "\n");
1118 for (unsigned i
= 0; i
< shProg
->NumShaders
; i
++) {
1119 fprintf(file
, "[%s shader]\n%s\n",
1120 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1121 shProg
->Shaders
[i
]->Source
);
1125 _mesa_warning(ctx
, "Failed to open %s", filename
);
1129 if (shProg
->LinkStatus
== GL_FALSE
&&
1130 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1131 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1132 shProg
->Name
, shProg
->InfoLog
);
1139 printf("Link %u shaders in program %u: %s\n",
1140 shProg
->NumShaders
, shProg
->Name
,
1141 shProg
->LinkStatus
? "Success" : "Failed");
1143 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1144 printf(" shader %u, stage %u\n",
1145 shProg
->Shaders
[i
]->Name
,
1146 shProg
->Shaders
[i
]->Stage
);
1153 * Print basic shader info (for debug).
1156 print_shader_info(const struct gl_shader_program
*shProg
)
1160 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1161 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1162 printf(" %s shader %u, checksum %u\n",
1163 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1164 shProg
->Shaders
[i
]->Name
,
1165 shProg
->Shaders
[i
]->SourceChecksum
);
1167 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1168 printf(" vert prog %u\n",
1169 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1170 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1171 printf(" frag prog %u\n",
1172 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1173 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1174 printf(" geom prog %u\n",
1175 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1176 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1177 printf(" tesc prog %u\n",
1178 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1179 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1180 printf(" tese prog %u\n",
1181 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1186 * Use the named shader program for subsequent glUniform calls
1189 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1192 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1193 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1194 "%s(program %u not linked)", caller
, shProg
->Name
);
1198 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1199 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1205 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1206 struct gl_shader_program
*shProg
,
1207 struct gl_pipeline_object
*shTarget
)
1209 struct gl_shader_program
**target
;
1211 target
= &shTarget
->CurrentProgram
[stage
];
1212 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1216 _mesa_shader_program_init_subroutine_defaults(ctx
, shProg
);
1218 if (*target
!= shProg
) {
1219 /* Program is current, flush it */
1220 if (shTarget
== ctx
->_Shader
) {
1221 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1224 /* If the shader is also bound as the current rendering shader, unbind
1225 * it from that binding point as well. This ensures that the correct
1226 * semantics of glDeleteProgram are maintained.
1229 case MESA_SHADER_VERTEX
:
1230 case MESA_SHADER_TESS_CTRL
:
1231 case MESA_SHADER_TESS_EVAL
:
1232 case MESA_SHADER_GEOMETRY
:
1233 case MESA_SHADER_COMPUTE
:
1234 /* Empty for now. */
1236 case MESA_SHADER_FRAGMENT
:
1237 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1238 _mesa_reference_shader_program(ctx
,
1239 &ctx
->_Shader
->_CurrentFragmentProgram
,
1245 _mesa_reference_shader_program(ctx
, target
, shProg
);
1252 * Use the named shader program for subsequent rendering.
1255 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1258 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1259 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1260 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1265 * Do validation of the given shader program.
1266 * \param errMsg returns error message if validation fails.
1267 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1270 validate_shader_program(const struct gl_shader_program
*shProg
,
1273 if (!shProg
->LinkStatus
) {
1277 /* From the GL spec, a program is invalid if any of these are true:
1279 any two active samplers in the current program object are of
1280 different types, but refer to the same texture image unit,
1282 any active sampler in the current program object refers to a texture
1283 image unit where fixed-function fragment processing accesses a
1284 texture target that does not match the sampler type, or
1286 the sum of the number of active samplers in the program and the
1287 number of texture image units enabled for fixed-function fragment
1288 processing exceeds the combined limit on the total number of texture
1289 image units allowed.
1293 * Check: any two active samplers in the current program object are of
1294 * different types, but refer to the same texture image unit,
1296 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1304 * Called via glValidateProgram()
1307 validate_program(struct gl_context
*ctx
, GLuint program
)
1309 struct gl_shader_program
*shProg
;
1310 char errMsg
[100] = "";
1312 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1317 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1318 if (!shProg
->Validated
) {
1319 /* update info log */
1320 if (shProg
->InfoLog
) {
1321 ralloc_free(shProg
->InfoLog
);
1323 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1330 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1332 GET_CURRENT_CONTEXT(ctx
);
1333 attach_shader(ctx
, program
, shader
);
1338 _mesa_AttachShader(GLuint program
, GLuint shader
)
1340 GET_CURRENT_CONTEXT(ctx
);
1341 attach_shader(ctx
, program
, shader
);
1346 _mesa_CompileShader(GLuint shaderObj
)
1348 GET_CURRENT_CONTEXT(ctx
);
1349 if (MESA_VERBOSE
& VERBOSE_API
)
1350 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1351 _mesa_compile_shader(ctx
, _mesa_lookup_shader_err(ctx
, shaderObj
,
1352 "glCompileShader"));
1357 _mesa_CreateShader(GLenum type
)
1359 GET_CURRENT_CONTEXT(ctx
);
1360 if (MESA_VERBOSE
& VERBOSE_API
)
1361 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1362 return create_shader(ctx
, type
);
1366 GLhandleARB GLAPIENTRY
1367 _mesa_CreateShaderObjectARB(GLenum type
)
1369 GET_CURRENT_CONTEXT(ctx
);
1370 return create_shader(ctx
, type
);
1375 _mesa_CreateProgram(void)
1377 GET_CURRENT_CONTEXT(ctx
);
1378 if (MESA_VERBOSE
& VERBOSE_API
)
1379 _mesa_debug(ctx
, "glCreateProgram\n");
1380 return create_shader_program(ctx
);
1384 GLhandleARB GLAPIENTRY
1385 _mesa_CreateProgramObjectARB(void)
1387 GET_CURRENT_CONTEXT(ctx
);
1388 return create_shader_program(ctx
);
1393 _mesa_DeleteObjectARB(GLhandleARB obj
)
1395 if (MESA_VERBOSE
& VERBOSE_API
) {
1396 GET_CURRENT_CONTEXT(ctx
);
1397 _mesa_debug(ctx
, "glDeleteObjectARB(%lu)\n", (unsigned long)obj
);
1401 GET_CURRENT_CONTEXT(ctx
);
1402 FLUSH_VERTICES(ctx
, 0);
1403 if (is_program(ctx
, obj
)) {
1404 delete_shader_program(ctx
, obj
);
1406 else if (is_shader(ctx
, obj
)) {
1407 delete_shader(ctx
, obj
);
1417 _mesa_DeleteProgram(GLuint name
)
1420 GET_CURRENT_CONTEXT(ctx
);
1421 FLUSH_VERTICES(ctx
, 0);
1422 delete_shader_program(ctx
, name
);
1428 _mesa_DeleteShader(GLuint name
)
1431 GET_CURRENT_CONTEXT(ctx
);
1432 FLUSH_VERTICES(ctx
, 0);
1433 delete_shader(ctx
, name
);
1439 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1441 GET_CURRENT_CONTEXT(ctx
);
1442 detach_shader(ctx
, program
, shader
);
1447 _mesa_DetachShader(GLuint program
, GLuint shader
)
1449 GET_CURRENT_CONTEXT(ctx
);
1450 detach_shader(ctx
, program
, shader
);
1455 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1456 GLsizei
* count
, GLhandleARB
* obj
)
1458 GET_CURRENT_CONTEXT(ctx
);
1459 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1464 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1465 GLsizei
*count
, GLuint
*obj
)
1467 GET_CURRENT_CONTEXT(ctx
);
1468 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1473 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1474 GLcharARB
* infoLog
)
1476 GET_CURRENT_CONTEXT(ctx
);
1477 if (is_program(ctx
, object
)) {
1478 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1480 else if (is_shader(ctx
, object
)) {
1481 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1484 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1490 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1492 GET_CURRENT_CONTEXT(ctx
);
1493 /* Implement in terms of GetProgramiv, GetShaderiv */
1494 if (is_program(ctx
, object
)) {
1495 if (pname
== GL_OBJECT_TYPE_ARB
) {
1496 *params
= GL_PROGRAM_OBJECT_ARB
;
1499 get_programiv(ctx
, object
, pname
, params
);
1502 else if (is_shader(ctx
, object
)) {
1503 if (pname
== GL_OBJECT_TYPE_ARB
) {
1504 *params
= GL_SHADER_OBJECT_ARB
;
1507 get_shaderiv(ctx
, object
, pname
, params
);
1511 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1517 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1520 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1521 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1522 params
[0] = (GLfloat
) iparams
[0];
1527 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1529 GET_CURRENT_CONTEXT(ctx
);
1530 get_programiv(ctx
, program
, pname
, params
);
1535 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1537 GET_CURRENT_CONTEXT(ctx
);
1538 get_shaderiv(ctx
, shader
, pname
, params
);
1543 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1544 GLsizei
*length
, GLchar
*infoLog
)
1546 GET_CURRENT_CONTEXT(ctx
);
1547 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1552 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1553 GLsizei
*length
, GLchar
*infoLog
)
1555 GET_CURRENT_CONTEXT(ctx
);
1556 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1561 _mesa_GetShaderSource(GLuint shader
, GLsizei maxLength
,
1562 GLsizei
*length
, GLchar
*sourceOut
)
1564 GET_CURRENT_CONTEXT(ctx
);
1565 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1569 GLhandleARB GLAPIENTRY
1570 _mesa_GetHandleARB(GLenum pname
)
1572 GET_CURRENT_CONTEXT(ctx
);
1573 return get_handle(ctx
, pname
);
1577 GLboolean GLAPIENTRY
1578 _mesa_IsProgram(GLuint name
)
1580 GET_CURRENT_CONTEXT(ctx
);
1581 return is_program(ctx
, name
);
1585 GLboolean GLAPIENTRY
1586 _mesa_IsShader(GLuint name
)
1588 GET_CURRENT_CONTEXT(ctx
);
1589 return is_shader(ctx
, name
);
1594 _mesa_LinkProgram(GLuint programObj
)
1596 GET_CURRENT_CONTEXT(ctx
);
1597 if (MESA_VERBOSE
& VERBOSE_API
)
1598 _mesa_debug(ctx
, "glLinkProgram %u\n", programObj
);
1599 _mesa_link_program(ctx
, _mesa_lookup_shader_program_err(ctx
, programObj
,
1603 #if defined(HAVE_SHA1)
1605 * Generate a SHA-1 hash value string for given source string.
1608 generate_sha1(const char *source
, char sha_str
[64])
1610 unsigned char sha
[20];
1611 _mesa_sha1_compute(source
, strlen(source
), sha
);
1612 _mesa_sha1_format(sha_str
, sha
);
1616 * Construct a full path for shader replacement functionality using
1619 * <path>/<stage prefix>_<CHECKSUM>.glsl
1622 construct_name(const gl_shader_stage stage
, const char *source
,
1623 const char *path
, char *name
, unsigned length
)
1626 static const char *types
[] = {
1627 "VS", "TC", "TE", "GS", "FS", "CS",
1630 generate_sha1(source
, sha
);
1631 _mesa_snprintf(name
, length
, "%s/%s_%s.glsl", path
, types
[stage
],
1636 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1639 dump_shader(const gl_shader_stage stage
, const char *source
)
1641 char name
[PATH_MAX
];
1642 static bool path_exists
= true;
1649 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1651 path_exists
= false;
1655 construct_name(stage
, source
, dump_path
, name
, PATH_MAX
);
1657 f
= fopen(name
, "w");
1662 GET_CURRENT_CONTEXT(ctx
);
1663 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1669 * Read shader source code from a file.
1670 * Useful for debugging to override an app's shader.
1673 read_shader(const gl_shader_stage stage
, const char *source
)
1675 char name
[PATH_MAX
];
1677 static bool path_exists
= true;
1678 int len
, shader_size
= 0;
1685 read_path
= getenv("MESA_SHADER_READ_PATH");
1687 path_exists
= false;
1691 construct_name(stage
, source
, read_path
, name
, PATH_MAX
);
1693 f
= fopen(name
, "r");
1697 /* allocate enough room for the entire shader */
1698 fseek(f
, 0, SEEK_END
);
1699 shader_size
= ftell(f
);
1701 assert(shader_size
);
1703 /* add one for terminating zero */
1706 buffer
= malloc(shader_size
);
1709 len
= fread(buffer
, 1, shader_size
, f
);
1716 #endif /* HAVE_SHA1 */
1719 * Called via glShaderSource() and glShaderSourceARB() API functions.
1720 * Basically, concatenate the source code strings into one long string
1721 * and pass it to _mesa_shader_source().
1724 _mesa_ShaderSource(GLuint shaderObj
, GLsizei count
,
1725 const GLchar
* const * string
, const GLint
* length
)
1727 GET_CURRENT_CONTEXT(ctx
);
1729 GLsizei i
, totalLength
;
1731 struct gl_shader
*sh
;
1733 #if defined(HAVE_SHA1)
1734 GLcharARB
*replacement
;
1735 #endif /* HAVE_SHA1 */
1737 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1741 if (string
== NULL
) {
1742 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1747 * This array holds offsets of where the appropriate string ends, thus the
1748 * last element will be set to the total length of the source code.
1750 offsets
= malloc(count
* sizeof(GLint
));
1751 if (offsets
== NULL
) {
1752 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1756 for (i
= 0; i
< count
; i
++) {
1757 if (string
[i
] == NULL
) {
1758 free((GLvoid
*) offsets
);
1759 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1760 "glShaderSourceARB(null string)");
1763 if (length
== NULL
|| length
[i
] < 0)
1764 offsets
[i
] = strlen(string
[i
]);
1766 offsets
[i
] = length
[i
];
1767 /* accumulate string lengths */
1769 offsets
[i
] += offsets
[i
- 1];
1772 /* Total length of source string is sum off all strings plus two.
1773 * One extra byte for terminating zero, another extra byte to silence
1774 * valgrind warnings in the parser/grammer code.
1776 totalLength
= offsets
[count
- 1] + 2;
1777 source
= malloc(totalLength
* sizeof(GLcharARB
));
1778 if (source
== NULL
) {
1779 free((GLvoid
*) offsets
);
1780 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1784 for (i
= 0; i
< count
; i
++) {
1785 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1786 memcpy(source
+ start
, string
[i
],
1787 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1789 source
[totalLength
- 1] = '\0';
1790 source
[totalLength
- 2] = '\0';
1792 #if defined(HAVE_SHA1)
1793 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1794 * if corresponding entry found from MESA_SHADER_READ_PATH.
1796 dump_shader(sh
->Stage
, source
);
1798 replacement
= read_shader(sh
->Stage
, source
);
1801 source
= replacement
;
1803 #endif /* HAVE_SHA1 */
1805 shader_source(sh
, source
);
1812 _mesa_UseProgram(GLuint program
)
1814 GET_CURRENT_CONTEXT(ctx
);
1815 struct gl_shader_program
*shProg
;
1817 if (MESA_VERBOSE
& VERBOSE_API
)
1818 _mesa_debug(ctx
, "glUseProgram %u\n", program
);
1820 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1821 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1822 "glUseProgram(transform feedback active)");
1827 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1831 if (!shProg
->LinkStatus
) {
1832 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1833 "glUseProgram(program %u not linked)", program
);
1838 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1839 print_shader_info(shProg
);
1846 /* The ARB_separate_shader_object spec says:
1848 * "The executable code for an individual shader stage is taken from
1849 * the current program for that stage. If there is a current program
1850 * object established by UseProgram, that program is considered current
1851 * for all stages. Otherwise, if there is a bound program pipeline
1852 * object (section 2.14.PPO), the program bound to the appropriate
1853 * stage of the pipeline object is considered current."
1856 /* Attach shader state to the binding point */
1857 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1858 /* Update the program */
1859 _mesa_use_program(ctx
, shProg
);
1861 /* Must be done first: detach the progam */
1862 _mesa_use_program(ctx
, shProg
);
1863 /* Unattach shader_state binding point */
1864 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1865 /* If a pipeline was bound, rebind it */
1866 if (ctx
->Pipeline
.Current
) {
1867 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1874 _mesa_ValidateProgram(GLuint program
)
1876 GET_CURRENT_CONTEXT(ctx
);
1877 validate_program(ctx
, program
);
1882 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1885 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1886 GLint
* range
, GLint
* precision
)
1888 const struct gl_program_constants
*limits
;
1889 const struct gl_precision
*p
;
1890 GET_CURRENT_CONTEXT(ctx
);
1892 switch (shadertype
) {
1893 case GL_VERTEX_SHADER
:
1894 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1896 case GL_FRAGMENT_SHADER
:
1897 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1900 _mesa_error(ctx
, GL_INVALID_ENUM
,
1901 "glGetShaderPrecisionFormat(shadertype)");
1905 switch (precisiontype
) {
1907 p
= &limits
->LowFloat
;
1909 case GL_MEDIUM_FLOAT
:
1910 p
= &limits
->MediumFloat
;
1913 p
= &limits
->HighFloat
;
1916 p
= &limits
->LowInt
;
1919 p
= &limits
->MediumInt
;
1922 p
= &limits
->HighInt
;
1925 _mesa_error(ctx
, GL_INVALID_ENUM
,
1926 "glGetShaderPrecisionFormat(precisiontype)");
1930 range
[0] = p
->RangeMin
;
1931 range
[1] = p
->RangeMax
;
1932 precision
[0] = p
->Precision
;
1937 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1940 _mesa_ReleaseShaderCompiler(void)
1942 _mesa_destroy_shader_compiler_caches();
1947 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1950 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1951 const void* binary
, GLint length
)
1953 GET_CURRENT_CONTEXT(ctx
);
1955 (void) binaryformat
;
1958 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1959 * page 88 of the OpenGL 4.5 specs state:
1961 * "An INVALID_VALUE error is generated if count or length is negative.
1962 * An INVALID_ENUM error is generated if binaryformat is not a supported
1963 * format returned in SHADER_BINARY_FORMATS."
1965 if (n
< 0 || length
< 0) {
1966 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1970 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1975 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1976 GLenum
*binaryFormat
, GLvoid
*binary
)
1978 struct gl_shader_program
*shProg
;
1979 GLsizei length_dummy
;
1980 GET_CURRENT_CONTEXT(ctx
);
1983 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1987 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1991 /* The ARB_get_program_binary spec says:
1993 * "If <length> is NULL, then no length is returned."
1995 * Ensure that length always points to valid storage to avoid multiple NULL
1996 * pointer checks below.
1999 length
= &length_dummy
;
2002 /* The ARB_get_program_binary spec says:
2004 * "When a program object's LINK_STATUS is FALSE, its program binary
2005 * length is zero, and a call to GetProgramBinary will generate an
2006 * INVALID_OPERATION error.
2008 if (!shProg
->LinkStatus
) {
2009 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2010 "glGetProgramBinary(program %u not linked)",
2017 _mesa_error(ctx
, GL_INVALID_OPERATION
,
2018 "glGetProgramBinary(driver supports zero binary formats)");
2020 (void) binaryFormat
;
2025 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
2026 const GLvoid
*binary
, GLsizei length
)
2028 struct gl_shader_program
*shProg
;
2029 GET_CURRENT_CONTEXT(ctx
);
2031 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
2035 (void) binaryFormat
;
2038 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
2040 * "If a negative number is provided where an argument of type sizei or
2041 * sizeiptr is specified, an INVALID_VALUE error is generated."
2044 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
2048 /* The ARB_get_program_binary spec says:
2050 * "<binaryFormat> and <binary> must be those returned by a previous
2051 * call to GetProgramBinary, and <length> must be the length of the
2052 * program binary as returned by GetProgramBinary or GetProgramiv with
2053 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
2054 * setting the LINK_STATUS of <program> to FALSE, if these conditions
2057 * Since any value of binaryFormat passed "is not one of those specified as
2058 * allowable for [this] command, an INVALID_ENUM error is generated."
2060 shProg
->LinkStatus
= GL_FALSE
;
2061 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
2066 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
2068 struct gl_shader_program
*shProg
;
2069 GET_CURRENT_CONTEXT(ctx
);
2071 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
2072 "glProgramParameteri");
2077 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
2078 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
2079 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
2080 * even be in the dispatch table, so we shouldn't need to expclicitly
2083 * On desktop, we ignore the 3.0+ requirement because it is silly.
2086 /* The ARB_get_program_binary extension spec says:
2088 * "An INVALID_VALUE error is generated if the <value> argument to
2089 * ProgramParameteri is not TRUE or FALSE."
2091 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2095 /* No need to notify the driver. Any changes will actually take effect
2096 * the next time the shader is linked.
2098 * The ARB_get_program_binary extension spec says:
2100 * "To indicate that a program binary is likely to be retrieved,
2101 * ProgramParameteri should be called with <pname>
2102 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2103 * will not be in effect until the next time LinkProgram or
2104 * ProgramBinary has been called successfully."
2106 * The resloution of issue 9 in the extension spec also says:
2108 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2109 * to indicate to the GL implementation that this program will
2110 * likely be saved with GetProgramBinary at some point. This will
2111 * give the GL implementation the opportunity to track any state
2112 * changes made to the program before being saved such that when it
2113 * is loaded again a recompile can be avoided."
2115 shProg
->BinaryRetreivableHint
= value
;
2118 case GL_PROGRAM_SEPARABLE
:
2119 /* Spec imply that the behavior is the same as ARB_get_program_binary
2120 * Chapter 7.3 Program Objects
2122 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2125 shProg
->SeparateShader
= value
;
2129 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2130 _mesa_enum_to_string(pname
));
2135 _mesa_error(ctx
, GL_INVALID_VALUE
,
2136 "glProgramParameteri(pname=%s, value=%d): "
2137 "value must be 0 or 1.",
2138 _mesa_enum_to_string(pname
),
2144 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2145 struct gl_shader_program
*shProg
,
2146 struct gl_pipeline_object
*shTarget
)
2148 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2149 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2154 * Copy program-specific data generated by linking from the gl_shader_program
2155 * object to the gl_program object referred to by the gl_linked_shader.
2157 * This function expects _mesa_reference_program() to have been previously
2158 * called setting the gl_linked_shaders program reference.
2161 _mesa_copy_linked_program_data(const struct gl_shader_program
*src
,
2162 struct gl_linked_shader
*dst_sh
)
2164 assert(dst_sh
->Program
);
2166 struct gl_program
*dst
= dst_sh
->Program
;
2168 dst
->info
.num_images
= dst_sh
->NumImages
;
2170 switch (dst_sh
->Stage
) {
2171 case MESA_SHADER_VERTEX
:
2172 dst
->ClipDistanceArraySize
= src
->Vert
.ClipDistanceArraySize
;
2173 dst
->CullDistanceArraySize
= src
->Vert
.CullDistanceArraySize
;
2175 case MESA_SHADER_TESS_CTRL
: {
2176 dst
->info
.tcs
.vertices_out
= dst_sh
->info
.TessCtrl
.VerticesOut
;
2179 case MESA_SHADER_TESS_EVAL
: {
2180 dst
->info
.tes
.primitive_mode
= dst_sh
->info
.TessEval
.PrimitiveMode
;
2181 dst
->info
.tes
.spacing
= dst_sh
->info
.TessEval
.Spacing
;
2182 dst
->info
.tes
.vertex_order
= dst_sh
->info
.TessEval
.VertexOrder
;
2183 dst
->info
.tes
.point_mode
= dst_sh
->info
.TessEval
.PointMode
;
2184 dst
->ClipDistanceArraySize
= src
->TessEval
.ClipDistanceArraySize
;
2185 dst
->CullDistanceArraySize
= src
->TessEval
.CullDistanceArraySize
;
2188 case MESA_SHADER_GEOMETRY
: {
2189 dst
->info
.gs
.vertices_in
= src
->Geom
.VerticesIn
;
2190 dst
->info
.gs
.vertices_out
= dst_sh
->info
.Geom
.VerticesOut
;
2191 dst
->info
.gs
.invocations
= dst_sh
->info
.Geom
.Invocations
;
2192 dst
->info
.gs
.input_primitive
= dst_sh
->info
.Geom
.InputType
;
2193 dst
->info
.gs
.output_primitive
= dst_sh
->info
.Geom
.OutputType
;
2194 dst
->ClipDistanceArraySize
= src
->Geom
.ClipDistanceArraySize
;
2195 dst
->CullDistanceArraySize
= src
->Geom
.CullDistanceArraySize
;
2196 dst
->info
.gs
.uses_end_primitive
= src
->Geom
.UsesEndPrimitive
;
2197 dst
->info
.gs
.uses_streams
= src
->Geom
.UsesStreams
;
2200 case MESA_SHADER_FRAGMENT
: {
2201 dst
->info
.fs
.depth_layout
= src
->FragDepthLayout
;
2202 dst
->info
.fs
.early_fragment_tests
= dst_sh
->info
.EarlyFragmentTests
;
2205 case MESA_SHADER_COMPUTE
: {
2206 for (int i
= 0; i
< 3; i
++)
2207 dst
->info
.cs
.local_size
[i
] = src
->Comp
.LocalSize
[i
];
2208 dst
->info
.cs
.shared_size
= src
->Comp
.SharedSize
;
2217 * ARB_separate_shader_objects: Compile & Link Program
2220 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2221 const GLchar
* const *strings
)
2223 GET_CURRENT_CONTEXT(ctx
);
2225 const GLuint shader
= create_shader(ctx
, type
);
2229 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2230 * GL_INVALID_VALUE should be generated if count < 0
2233 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2238 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
2240 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2241 _mesa_compile_shader(ctx
, sh
);
2243 program
= create_shader_program(ctx
);
2245 struct gl_shader_program
*shProg
;
2246 GLint compiled
= GL_FALSE
;
2248 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2250 shProg
->SeparateShader
= GL_TRUE
;
2252 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2254 attach_shader(ctx
, program
, shader
);
2255 _mesa_link_program(ctx
, shProg
);
2256 detach_shader(ctx
, program
, shader
);
2260 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2261 append
-error
-to
-info
-log
;
2262 shProg
->LinkStatus
= GL_FALSE
;
2267 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2270 delete_shader(ctx
, shader
);
2278 * For GL_ARB_tessellation_shader
2280 extern void GLAPIENTRY
2281 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2283 GET_CURRENT_CONTEXT(ctx
);
2285 if (!_mesa_has_tessellation(ctx
)) {
2286 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2290 if (pname
!= GL_PATCH_VERTICES
) {
2291 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2295 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2296 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2300 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2304 extern void GLAPIENTRY
2305 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2307 GET_CURRENT_CONTEXT(ctx
);
2309 if (!_mesa_has_tessellation(ctx
)) {
2310 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2315 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2316 FLUSH_VERTICES(ctx
, 0);
2317 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2318 4 * sizeof(GLfloat
));
2319 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2321 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2322 FLUSH_VERTICES(ctx
, 0);
2323 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2324 2 * sizeof(GLfloat
));
2325 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2328 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2334 * ARB_shader_subroutine
2337 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2340 GET_CURRENT_CONTEXT(ctx
);
2341 const char *api_name
= "glGetSubroutineUniformLocation";
2342 struct gl_shader_program
*shProg
;
2343 GLenum resource_type
;
2344 gl_shader_stage stage
;
2346 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2347 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2351 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2352 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2356 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2360 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2361 if (!shProg
->_LinkedShaders
[stage
]) {
2362 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2366 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2367 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2371 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2374 GET_CURRENT_CONTEXT(ctx
);
2375 const char *api_name
= "glGetSubroutineIndex";
2376 struct gl_shader_program
*shProg
;
2377 struct gl_program_resource
*res
;
2378 GLenum resource_type
;
2379 gl_shader_stage stage
;
2381 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2382 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2386 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2387 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2391 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2395 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2396 if (!shProg
->_LinkedShaders
[stage
]) {
2397 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2401 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2402 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2407 return _mesa_program_resource_index(shProg
, res
);
2412 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2413 GLuint index
, GLenum pname
, GLint
*values
)
2415 GET_CURRENT_CONTEXT(ctx
);
2416 const char *api_name
= "glGetActiveSubroutineUniformiv";
2417 struct gl_shader_program
*shProg
;
2418 struct gl_linked_shader
*sh
;
2419 gl_shader_stage stage
;
2420 struct gl_program_resource
*res
;
2421 const struct gl_uniform_storage
*uni
;
2422 GLenum resource_type
;
2425 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2426 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2430 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2431 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2435 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2439 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2440 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2442 sh
= shProg
->_LinkedShaders
[stage
];
2444 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2448 if (index
>= sh
->NumSubroutineUniforms
) {
2449 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s: invalid index greater than GL_ACTIVE_SUBROUTINE_UNIFORMS", api_name
);
2454 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2455 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2458 values
[0] = uni
->num_compatible_subroutines
;
2462 case GL_COMPATIBLE_SUBROUTINES
: {
2463 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2467 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2468 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2469 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2470 if (fn
->types
[j
] == uni
->type
) {
2471 values
[count
++] = i
;
2479 case GL_UNIFORM_SIZE
:
2480 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2483 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2486 case GL_UNIFORM_NAME_LENGTH
:
2487 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2489 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2490 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2494 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2501 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2502 GLuint index
, GLsizei bufsize
,
2503 GLsizei
*length
, GLchar
*name
)
2505 GET_CURRENT_CONTEXT(ctx
);
2506 const char *api_name
= "glGetActiveSubroutineUniformName";
2507 struct gl_shader_program
*shProg
;
2508 GLenum resource_type
;
2509 gl_shader_stage stage
;
2511 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2512 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2516 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2517 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2521 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2525 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2526 if (!shProg
->_LinkedShaders
[stage
]) {
2527 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2531 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2532 /* get program resource name */
2533 _mesa_get_program_resource_name(shProg
, resource_type
,
2535 length
, name
, api_name
);
2540 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2541 GLuint index
, GLsizei bufsize
,
2542 GLsizei
*length
, GLchar
*name
)
2544 GET_CURRENT_CONTEXT(ctx
);
2545 const char *api_name
= "glGetActiveSubroutineName";
2546 struct gl_shader_program
*shProg
;
2547 GLenum resource_type
;
2548 gl_shader_stage stage
;
2550 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2551 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2555 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2556 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2560 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2564 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2565 if (!shProg
->_LinkedShaders
[stage
]) {
2566 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2569 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2570 _mesa_get_program_resource_name(shProg
, resource_type
,
2572 length
, name
, api_name
);
2576 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2577 const GLuint
*indices
)
2579 GET_CURRENT_CONTEXT(ctx
);
2580 const char *api_name
= "glUniformSubroutinesuiv";
2581 struct gl_shader_program
*shProg
;
2582 struct gl_linked_shader
*sh
;
2583 gl_shader_stage stage
;
2586 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2587 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2591 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2592 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2596 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2597 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2599 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2603 sh
= shProg
->_LinkedShaders
[stage
];
2605 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2609 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2610 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2616 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2622 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2625 for (j
= i
; j
< i
+ uni_count
; j
++) {
2626 struct gl_subroutine_function
*subfn
= NULL
;
2627 if (indices
[j
] > sh
->MaxSubroutineFunctionIndex
) {
2628 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2632 for (f
= 0; f
< sh
->NumSubroutineFunctions
; f
++) {
2633 if (sh
->SubroutineFunctions
[f
].index
== indices
[j
])
2634 subfn
= &sh
->SubroutineFunctions
[f
];
2641 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2642 if (subfn
->types
[k
] == uni
->type
)
2645 if (k
== subfn
->num_compat_types
) {
2646 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2650 ctx
->SubroutineIndex
[sh
->Stage
].IndexPtr
[j
] = indices
[j
];
2655 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2660 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2663 GET_CURRENT_CONTEXT(ctx
);
2664 const char *api_name
= "glGetUniformSubroutineuiv";
2665 struct gl_shader_program
*shProg
;
2666 struct gl_linked_shader
*sh
;
2667 gl_shader_stage stage
;
2669 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2670 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2674 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2675 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2679 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2680 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2682 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2686 sh
= shProg
->_LinkedShaders
[stage
];
2688 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2692 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2693 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2697 *params
= ctx
->SubroutineIndex
[sh
->Stage
].IndexPtr
[location
];
2702 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2703 GLenum pname
, GLint
*values
)
2705 GET_CURRENT_CONTEXT(ctx
);
2706 const char *api_name
= "glGetProgramStageiv";
2707 struct gl_shader_program
*shProg
;
2708 struct gl_linked_shader
*sh
;
2709 gl_shader_stage stage
;
2711 if (!_mesa_has_ARB_shader_subroutine(ctx
)) {
2712 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2716 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2717 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2721 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2725 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2726 sh
= shProg
->_LinkedShaders
[stage
];
2728 /* ARB_shader_subroutine doesn't ask the program to be linked, or list any
2729 * INVALID_OPERATION in the case of not be linked.
2731 * And for some pnames, like GL_ACTIVE_SUBROUTINE_UNIFORMS, you can ask the
2732 * same info using other specs (ARB_program_interface_query), without the
2733 * need of the program to be linked, being the value for that case 0.
2735 * But at the same time, some other methods require the program to be
2736 * linked for pname related to locations, so it would be inconsistent to
2737 * not do the same here. So we are:
2738 * * Return GL_INVALID_OPERATION if not linked only for locations.
2739 * * Setting a default value of 0, to be returned if not linked.
2743 if (pname
== GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
) {
2744 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2750 case GL_ACTIVE_SUBROUTINES
:
2751 values
[0] = sh
->NumSubroutineFunctions
;
2753 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2754 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2756 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2757 values
[0] = sh
->NumSubroutineUniforms
;
2759 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2763 GLenum resource_type
;
2764 struct gl_program_resource
*res
;
2766 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2767 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2768 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2770 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2775 values
[0] = max_len
;
2778 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2782 GLenum resource_type
;
2783 struct gl_program_resource
*res
;
2785 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2786 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2787 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2789 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2790 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2796 values
[0] = max_len
;
2800 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2807 find_compat_subroutine(struct gl_linked_shader
*sh
,
2808 const struct glsl_type
*type
)
2812 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2813 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2814 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2815 if (fn
->types
[j
] == type
)
2823 _mesa_shader_write_subroutine_index(struct gl_context
*ctx
,
2824 struct gl_linked_shader
*sh
)
2828 if (sh
->NumSubroutineUniformRemapTable
== 0)
2833 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2842 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2843 for (j
= 0; j
< uni_count
; j
++) {
2844 val
= ctx
->SubroutineIndex
[sh
->Stage
].IndexPtr
[i
+ j
];
2845 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2848 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2850 } while(i
< sh
->NumSubroutineUniformRemapTable
);
2854 _mesa_shader_write_subroutine_indices(struct gl_context
*ctx
,
2855 gl_shader_stage stage
)
2857 if (ctx
->_Shader
->CurrentProgram
[stage
] &&
2858 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
])
2859 _mesa_shader_write_subroutine_index(ctx
,
2860 ctx
->_Shader
->CurrentProgram
[stage
]->_LinkedShaders
[stage
]);
2864 _mesa_shader_init_subroutine_defaults(struct gl_context
*ctx
,
2865 struct gl_linked_shader
*sh
)
2868 struct gl_subroutine_index_binding
*binding
= &ctx
->SubroutineIndex
[sh
->Stage
];
2869 if (binding
->NumIndex
!= sh
->NumSubroutineUniformRemapTable
) {
2870 binding
->IndexPtr
= realloc(binding
->IndexPtr
,
2871 sh
->NumSubroutineUniformRemapTable
* (sizeof(GLuint
)));
2872 binding
->NumIndex
= sh
->NumSubroutineUniformRemapTable
;
2875 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2876 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2881 binding
->IndexPtr
[i
] = find_compat_subroutine(sh
, uni
->type
);
2886 _mesa_shader_program_init_subroutine_defaults(struct gl_context
*ctx
,
2887 struct gl_shader_program
*shProg
)
2894 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2895 if (!shProg
->_LinkedShaders
[i
])
2898 _mesa_shader_init_subroutine_defaults(ctx
, shProg
->_LinkedShaders
[i
]);