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
40 #include "main/glheader.h"
41 #include "main/context.h"
42 #include "main/dispatch.h"
43 #include "main/enums.h"
44 #include "main/hash.h"
45 #include "main/mtypes.h"
46 #include "main/pipelineobj.h"
47 #include "main/shaderapi.h"
48 #include "main/shaderobj.h"
49 #include "main/transformfeedback.h"
50 #include "main/uniforms.h"
51 #include "program/program.h"
52 #include "program/prog_print.h"
53 #include "program/prog_parameter.h"
54 #include "util/ralloc.h"
55 #include "util/hash_table.h"
57 #include "../glsl/glsl_parser_extras.h"
58 #include "../glsl/ir.h"
59 #include "../glsl/ir_uniform.h"
60 #include "../glsl/program.h"
62 /** Define this to enable shader substitution (see below) */
63 #define SHADER_SUBST 0
67 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
70 _mesa_get_shader_flags(void)
72 GLbitfield flags
= 0x0;
73 const char *env
= getenv("MESA_GLSL");
76 if (strstr(env
, "dump_on_error"))
77 flags
|= GLSL_DUMP_ON_ERROR
;
78 else if (strstr(env
, "dump"))
80 if (strstr(env
, "log"))
82 if (strstr(env
, "nopvert"))
83 flags
|= GLSL_NOP_VERT
;
84 if (strstr(env
, "nopfrag"))
85 flags
|= GLSL_NOP_FRAG
;
86 if (strstr(env
, "nopt"))
88 else if (strstr(env
, "opt"))
90 if (strstr(env
, "uniform"))
91 flags
|= GLSL_UNIFORMS
;
92 if (strstr(env
, "useprog"))
93 flags
|= GLSL_USE_PROG
;
94 if (strstr(env
, "errors"))
95 flags
|= GLSL_REPORT_ERRORS
;
103 * Initialize context's shader state.
106 _mesa_init_shader_state(struct gl_context
*ctx
)
108 /* Device drivers may override these to control what kind of instructions
109 * are generated by the GLSL compiler.
111 struct gl_shader_compiler_options options
;
115 memset(&options
, 0, sizeof(options
));
116 options
.MaxUnrollIterations
= 32;
117 options
.MaxIfDepth
= UINT_MAX
;
119 for (sh
= 0; sh
< MESA_SHADER_STAGES
; ++sh
)
120 memcpy(&ctx
->Const
.ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
122 ctx
->Shader
.Flags
= _mesa_get_shader_flags();
124 if (ctx
->Shader
.Flags
!= 0)
125 ctx
->Const
.GenerateTemporaryNames
= true;
127 /* Extended for ARB_separate_shader_objects */
128 ctx
->Shader
.RefCount
= 1;
129 mtx_init(&ctx
->Shader
.Mutex
, mtx_plain
);
131 ctx
->TessCtrlProgram
.patch_vertices
= 3;
132 for (i
= 0; i
< 4; ++i
)
133 ctx
->TessCtrlProgram
.patch_default_outer_level
[i
] = 1.0;
134 for (i
= 0; i
< 2; ++i
)
135 ctx
->TessCtrlProgram
.patch_default_inner_level
[i
] = 1.0;
140 * Free the per-context shader-related state.
143 _mesa_free_shader_state(struct gl_context
*ctx
)
146 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
147 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[i
],
150 _mesa_reference_shader_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
,
152 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
154 /* Extended for ARB_separate_shader_objects */
155 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
157 assert(ctx
->Shader
.RefCount
== 1);
158 mtx_destroy(&ctx
->Shader
.Mutex
);
163 * Copy string from <src> to <dst>, up to maxLength characters, returning
164 * length of <dst> in <length>.
165 * \param src the strings source
166 * \param maxLength max chars to copy
167 * \param length returns number of chars copied
168 * \param dst the string destination
171 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
172 GLsizei
*length
, const GLchar
*src
)
175 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
186 * Confirm that the a shader type is valid and supported by the implementation
188 * \param ctx Current GL context
189 * \param type Shader target
193 _mesa_validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
195 /* Note: when building built-in GLSL functions, this function may be
196 * invoked with ctx == NULL. In that case, we can only validate that it's
197 * a shader target we recognize, not that it's supported in the current
198 * context. But that's fine--we don't need any further validation than
199 * that when building built-in GLSL functions.
203 case GL_FRAGMENT_SHADER
:
204 return ctx
== NULL
|| ctx
->Extensions
.ARB_fragment_shader
;
205 case GL_VERTEX_SHADER
:
206 return ctx
== NULL
|| ctx
->Extensions
.ARB_vertex_shader
;
207 case GL_GEOMETRY_SHADER_ARB
:
208 return ctx
== NULL
|| _mesa_has_geometry_shaders(ctx
);
209 case GL_TESS_CONTROL_SHADER
:
210 case GL_TESS_EVALUATION_SHADER
:
211 return ctx
== NULL
|| _mesa_has_tessellation(ctx
);
212 case GL_COMPUTE_SHADER
:
213 return ctx
== NULL
|| ctx
->Extensions
.ARB_compute_shader
;
221 is_program(struct gl_context
*ctx
, GLuint name
)
223 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
224 return shProg
? GL_TRUE
: GL_FALSE
;
229 is_shader(struct gl_context
*ctx
, GLuint name
)
231 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
232 return shader
? GL_TRUE
: GL_FALSE
;
237 * Attach shader to a shader program.
240 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
242 struct gl_shader_program
*shProg
;
243 struct gl_shader
*sh
;
246 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
248 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
252 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
257 n
= shProg
->NumShaders
;
258 for (i
= 0; i
< n
; i
++) {
259 if (shProg
->Shaders
[i
] == sh
) {
260 /* The shader is already attched to this program. The
261 * GL_ARB_shader_objects spec says:
263 * "The error INVALID_OPERATION is generated by AttachObjectARB
264 * if <obj> is already attached to <containerObj>."
266 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
268 } else if (same_type_disallowed
&&
269 shProg
->Shaders
[i
]->Type
== sh
->Type
) {
270 /* Shader with the same type is already attached to this program,
271 * OpenGL ES 2.0 and 3.0 specs say:
273 * "Multiple shader objects of the same type may not be attached
274 * to a single program object. [...] The error INVALID_OPERATION
275 * is generated if [...] another shader object of the same type
276 * as shader is already attached to program."
278 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
284 shProg
->Shaders
= realloc(shProg
->Shaders
,
285 (n
+ 1) * sizeof(struct gl_shader
*));
286 if (!shProg
->Shaders
) {
287 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
292 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
293 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
294 shProg
->NumShaders
++;
299 create_shader(struct gl_context
*ctx
, GLenum type
)
301 struct gl_shader
*sh
;
304 if (!_mesa_validate_shader_target(ctx
, type
)) {
305 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(type)");
309 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
310 sh
= ctx
->Driver
.NewShader(ctx
, name
, type
);
311 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, sh
);
318 create_shader_program(struct gl_context
*ctx
)
321 struct gl_shader_program
*shProg
;
323 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
325 shProg
= ctx
->Driver
.NewShaderProgram(name
);
327 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, shProg
);
329 assert(shProg
->RefCount
== 1);
336 * Delete a shader program. Actually, just decrement the program's
337 * reference count and mark it as DeletePending.
338 * Used to implement glDeleteProgram() and glDeleteObjectARB().
341 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
344 * NOTE: deleting shaders/programs works a bit differently than
345 * texture objects (and buffer objects, etc). Shader/program
346 * handles/IDs exist in the hash table until the object is really
347 * deleted (refcount==0). With texture objects, the handle/ID is
348 * removed from the hash table in glDeleteTextures() while the tex
349 * object itself might linger until its refcount goes to zero.
351 struct gl_shader_program
*shProg
;
353 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
357 if (!shProg
->DeletePending
) {
358 shProg
->DeletePending
= GL_TRUE
;
360 /* effectively, decr shProg's refcount */
361 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
367 delete_shader(struct gl_context
*ctx
, GLuint shader
)
369 struct gl_shader
*sh
;
371 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
375 if (!sh
->DeletePending
) {
376 sh
->DeletePending
= GL_TRUE
;
378 /* effectively, decr sh's refcount */
379 _mesa_reference_shader(ctx
, &sh
, NULL
);
385 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
387 struct gl_shader_program
*shProg
;
391 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
395 n
= shProg
->NumShaders
;
397 for (i
= 0; i
< n
; i
++) {
398 if (shProg
->Shaders
[i
]->Name
== shader
) {
400 struct gl_shader
**newList
;
403 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
405 /* alloc new, smaller array */
406 newList
= malloc((n
- 1) * sizeof(struct gl_shader
*));
408 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
411 /* Copy old list entries to new list, skipping removed entry at [i] */
412 for (j
= 0; j
< i
; j
++) {
413 newList
[j
] = shProg
->Shaders
[j
];
416 newList
[j
++] = shProg
->Shaders
[i
];
419 /* Free old list and install new one */
420 free(shProg
->Shaders
);
421 shProg
->Shaders
= newList
;
422 shProg
->NumShaders
= n
- 1;
425 /* sanity check - make sure the new list's entries are sensible */
426 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
427 assert(shProg
->Shaders
[j
]->Type
== GL_VERTEX_SHADER
||
428 shProg
->Shaders
[j
]->Type
== GL_TESS_CONTROL_SHADER
||
429 shProg
->Shaders
[j
]->Type
== GL_TESS_EVALUATION_SHADER
||
430 shProg
->Shaders
[j
]->Type
== GL_GEOMETRY_SHADER
||
431 shProg
->Shaders
[j
]->Type
== GL_FRAGMENT_SHADER
);
432 assert(shProg
->Shaders
[j
]->RefCount
> 0);
443 if (is_shader(ctx
, shader
) || is_program(ctx
, shader
))
444 err
= GL_INVALID_OPERATION
;
446 err
= GL_INVALID_VALUE
;
447 _mesa_error(ctx
, err
, "glDetachShader(shader)");
454 * Return list of shaders attached to shader program.
457 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
458 GLsizei
*count
, GLuint
*obj
)
460 struct gl_shader_program
*shProg
;
463 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetAttachedShaders(maxCount < 0)");
468 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
472 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
473 obj
[i
] = shProg
->Shaders
[i
]->Name
;
482 * glGetHandleARB() - return ID/name of currently bound shader program.
485 get_handle(struct gl_context
*ctx
, GLenum pname
)
487 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
488 if (ctx
->_Shader
->ActiveProgram
)
489 return ctx
->_Shader
->ActiveProgram
->Name
;
494 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
501 * Check if a geometry shader query is valid at this time. If not, report an
502 * error and return false.
504 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
506 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
507 * are queried for a program which has not been linked successfully, or
508 * which does not contain objects to form a geometry shader, then an
509 * INVALID_OPERATION error is generated."
512 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
514 if (shProg
->LinkStatus
&&
515 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
519 _mesa_error(ctx
, GL_INVALID_OPERATION
,
520 "glGetProgramv(linked geometry shader required)");
526 * Check if a tessellation control shader query is valid at this time.
527 * If not, report an error and return false.
529 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
531 * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
532 * not been linked successfully, or which does not contain objects to
533 * form a tessellation control shader, then an INVALID_OPERATION error is
537 check_tcs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
539 if (shProg
->LinkStatus
&&
540 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
] != NULL
) {
544 _mesa_error(ctx
, GL_INVALID_OPERATION
,
545 "glGetProgramv(linked tessellation control shader required)");
551 * Check if a tessellation evaluation shader query is valid at this time.
552 * If not, report an error and return false.
554 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
556 * "If any of the pname values in this paragraph are queried for a program
557 * which has not been linked successfully, or which does not contain
558 * objects to form a tessellation evaluation shader, then an
559 * INVALID_OPERATION error is generated."
563 check_tes_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
565 if (shProg
->LinkStatus
&&
566 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
] != NULL
) {
570 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramv(linked tessellation "
571 "evaluation shader required)");
577 * glGetProgramiv() - get shader program state.
578 * Note that this is for GLSL shader programs, not ARB vertex/fragment
579 * programs (see glGetProgramivARB).
582 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
,
585 struct gl_shader_program
*shProg
586 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramiv(program)");
588 /* Is transform feedback available in this context?
591 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
592 || ctx
->API
== API_OPENGL_CORE
593 || _mesa_is_gles3(ctx
);
595 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
596 * and GL 3.2) are available in this context
598 const bool has_core_gs
= _mesa_has_geometry_shaders(ctx
);
599 const bool has_tess
= _mesa_has_tessellation(ctx
);
601 /* Are uniform buffer objects available in this context?
604 (ctx
->API
== API_OPENGL_COMPAT
&&
605 ctx
->Extensions
.ARB_uniform_buffer_object
)
606 || ctx
->API
== API_OPENGL_CORE
607 || _mesa_is_gles3(ctx
);
614 case GL_DELETE_STATUS
:
615 *params
= shProg
->DeletePending
;
618 *params
= shProg
->LinkStatus
;
620 case GL_VALIDATE_STATUS
:
621 *params
= shProg
->Validated
;
623 case GL_INFO_LOG_LENGTH
:
624 *params
= shProg
->InfoLog
? strlen(shProg
->InfoLog
) + 1 : 0;
626 case GL_ATTACHED_SHADERS
:
627 *params
= shProg
->NumShaders
;
629 case GL_ACTIVE_ATTRIBUTES
:
630 *params
= _mesa_count_active_attribs(shProg
);
632 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
633 *params
= _mesa_longest_attribute_name_length(shProg
);
635 case GL_ACTIVE_UNIFORMS
:
636 *params
= shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
638 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
641 const unsigned num_uniforms
=
642 shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
644 for (i
= 0; i
< num_uniforms
; i
++) {
645 /* Add one for the terminating NUL character for a non-array, and
646 * 4 for the "[0]" and the NUL for an array.
648 const GLint len
= strlen(shProg
->UniformStorage
[i
].name
) + 1 +
649 ((shProg
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
658 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
661 *params
= shProg
->TransformFeedback
.NumVarying
;
663 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
669 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
670 /* Add one for the terminating NUL character.
673 strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
682 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
685 *params
= shProg
->TransformFeedback
.BufferMode
;
687 case GL_GEOMETRY_VERTICES_OUT
:
690 if (check_gs_query(ctx
, shProg
))
691 *params
= shProg
->Geom
.VerticesOut
;
693 case GL_GEOMETRY_SHADER_INVOCATIONS
:
694 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
696 if (check_gs_query(ctx
, shProg
))
697 *params
= shProg
->Geom
.Invocations
;
699 case GL_GEOMETRY_INPUT_TYPE
:
702 if (check_gs_query(ctx
, shProg
))
703 *params
= shProg
->Geom
.InputType
;
705 case GL_GEOMETRY_OUTPUT_TYPE
:
708 if (check_gs_query(ctx
, shProg
))
709 *params
= shProg
->Geom
.OutputType
;
711 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
718 for (i
= 0; i
< shProg
->NumUniformBlocks
; i
++) {
719 /* Add one for the terminating NUL character.
721 const GLint len
= strlen(shProg
->UniformBlocks
[i
].Name
) + 1;
730 case GL_ACTIVE_UNIFORM_BLOCKS
:
734 *params
= shProg
->NumUniformBlocks
;
736 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
737 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
738 * only available with desktop OpenGL 3.0+ with the
739 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
741 * On desktop, we ignore the 3.0+ requirement because it is silly.
743 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
746 *params
= shProg
->BinaryRetreivableHint
;
748 case GL_PROGRAM_BINARY_LENGTH
:
751 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
752 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
755 *params
= shProg
->NumAtomicBuffers
;
757 case GL_COMPUTE_WORK_GROUP_SIZE
: {
759 if (!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_compute_shader
)
761 if (!shProg
->LinkStatus
) {
762 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
766 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
767 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
771 for (i
= 0; i
< 3; i
++)
772 params
[i
] = shProg
->Comp
.LocalSize
[i
];
775 case GL_PROGRAM_SEPARABLE
:
776 *params
= shProg
->SeparateShader
;
779 /* ARB_tessellation_shader */
780 case GL_TESS_CONTROL_OUTPUT_VERTICES
:
783 if (check_tcs_query(ctx
, shProg
))
784 *params
= shProg
->TessCtrl
.VerticesOut
;
786 case GL_TESS_GEN_MODE
:
789 if (check_tes_query(ctx
, shProg
))
790 *params
= shProg
->TessEval
.PrimitiveMode
;
792 case GL_TESS_GEN_SPACING
:
795 if (check_tes_query(ctx
, shProg
))
796 *params
= shProg
->TessEval
.Spacing
;
798 case GL_TESS_GEN_VERTEX_ORDER
:
801 if (check_tes_query(ctx
, shProg
))
802 *params
= shProg
->TessEval
.VertexOrder
;
804 case GL_TESS_GEN_POINT_MODE
:
807 if (check_tes_query(ctx
, shProg
))
808 *params
= shProg
->TessEval
.PointMode
;
814 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
815 _mesa_enum_to_string(pname
));
820 * glGetShaderiv() - get GLSL shader state
823 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
825 struct gl_shader
*shader
=
826 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
834 *params
= shader
->Type
;
836 case GL_DELETE_STATUS
:
837 *params
= shader
->DeletePending
;
839 case GL_COMPILE_STATUS
:
840 *params
= shader
->CompileStatus
;
842 case GL_INFO_LOG_LENGTH
:
843 *params
= shader
->InfoLog
? strlen(shader
->InfoLog
) + 1 : 0;
845 case GL_SHADER_SOURCE_LENGTH
:
846 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
849 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
856 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
857 GLsizei
*length
, GLchar
*infoLog
)
859 struct gl_shader_program
*shProg
;
861 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
862 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
864 * "If a negative number is provided where an argument of type sizei or
865 * sizeiptr is specified, an INVALID_VALUE error is generated."
868 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(bufSize < 0)");
872 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
873 "glGetProgramInfoLog(program)");
878 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
883 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
884 GLsizei
*length
, GLchar
*infoLog
)
886 struct gl_shader
*sh
;
888 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
889 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
891 * "If a negative number is provided where an argument of type sizei or
892 * sizeiptr is specified, an INVALID_VALUE error is generated."
895 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(bufSize < 0)");
899 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderInfoLog(shader)");
904 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
909 * Return shader source code.
912 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
913 GLsizei
*length
, GLchar
*sourceOut
)
915 struct gl_shader
*sh
;
918 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderSource(bufSize < 0)");
922 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
926 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
931 * Set/replace shader source code. A helper function used by
932 * glShaderSource[ARB].
935 shader_source(struct gl_context
*ctx
, GLuint shader
, const GLchar
*source
)
937 struct gl_shader
*sh
;
939 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glShaderSource");
943 /* free old shader source string and install new one */
944 free((void *)sh
->Source
);
946 sh
->CompileStatus
= GL_FALSE
;
948 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
957 compile_shader(struct gl_context
*ctx
, GLuint shaderObj
)
959 struct gl_shader
*sh
;
961 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glCompileShader");
966 /* If the user called glCompileShader without first calling
967 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
969 sh
->CompileStatus
= GL_FALSE
;
971 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
972 _mesa_log("GLSL source for %s shader %d:\n",
973 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
974 _mesa_log("%s\n", sh
->Source
);
977 /* this call will set the shader->CompileStatus field to indicate if
978 * compilation was successful.
980 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
982 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
983 _mesa_write_shader_to_file(sh
);
986 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
987 if (sh
->CompileStatus
) {
988 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
989 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
992 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
994 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
995 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
996 _mesa_log("%s\n", sh
->InfoLog
);
1001 if (!sh
->CompileStatus
) {
1002 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1003 _mesa_log("GLSL source for %s shader %d:\n",
1004 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1005 _mesa_log("%s\n", sh
->Source
);
1006 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1009 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1010 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1011 sh
->Name
, sh
->InfoLog
);
1018 * Link a program's shaders.
1021 link_program(struct gl_context
*ctx
, GLuint program
)
1023 struct gl_shader_program
*shProg
;
1025 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glLinkProgram");
1029 /* From the ARB_transform_feedback2 specification:
1030 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1031 * the name of a program being used by one or more transform feedback
1032 * objects, even if the objects are not currently bound or are paused."
1034 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1035 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1036 "glLinkProgram(transform feedback is using the program)");
1040 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1042 _mesa_glsl_link_shader(ctx
, shProg
);
1044 if (shProg
->LinkStatus
== GL_FALSE
&&
1045 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1046 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1047 shProg
->Name
, shProg
->InfoLog
);
1054 printf("Link %u shaders in program %u: %s\n",
1055 shProg
->NumShaders
, shProg
->Name
,
1056 shProg
->LinkStatus
? "Success" : "Failed");
1058 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1059 printf(" shader %u, type 0x%x\n",
1060 shProg
->Shaders
[i
]->Name
,
1061 shProg
->Shaders
[i
]->Type
);
1068 * Print basic shader info (for debug).
1071 print_shader_info(const struct gl_shader_program
*shProg
)
1075 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1076 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1077 printf(" %s shader %u, checksum %u\n",
1078 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1079 shProg
->Shaders
[i
]->Name
,
1080 shProg
->Shaders
[i
]->SourceChecksum
);
1082 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1083 printf(" vert prog %u\n",
1084 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1085 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1086 printf(" frag prog %u\n",
1087 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1088 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1089 printf(" geom prog %u\n",
1090 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1091 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1092 printf(" tesc prog %u\n",
1093 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1094 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1095 printf(" tese prog %u\n",
1096 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1101 * Use the named shader program for subsequent glUniform calls
1104 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1107 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1108 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1109 "%s(program %u not linked)", caller
, shProg
->Name
);
1113 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1114 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1120 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1121 struct gl_shader_program
*shProg
,
1122 struct gl_pipeline_object
*shTarget
)
1124 struct gl_shader_program
**target
;
1126 target
= &shTarget
->CurrentProgram
[stage
];
1127 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1130 if (*target
!= shProg
) {
1131 /* Program is current, flush it */
1132 if (shTarget
== ctx
->_Shader
) {
1133 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1136 /* If the shader is also bound as the current rendering shader, unbind
1137 * it from that binding point as well. This ensures that the correct
1138 * semantics of glDeleteProgram are maintained.
1141 case MESA_SHADER_VERTEX
:
1142 case MESA_SHADER_TESS_CTRL
:
1143 case MESA_SHADER_TESS_EVAL
:
1144 case MESA_SHADER_GEOMETRY
:
1145 case MESA_SHADER_COMPUTE
:
1146 /* Empty for now. */
1148 case MESA_SHADER_FRAGMENT
:
1149 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1150 _mesa_reference_shader_program(ctx
,
1151 &ctx
->_Shader
->_CurrentFragmentProgram
,
1157 _mesa_reference_shader_program(ctx
, target
, shProg
);
1164 * Use the named shader program for subsequent rendering.
1167 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1170 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1171 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1172 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1174 _mesa_shader_program_init_subroutine_defaults(shProg
);
1175 if (ctx
->Driver
.UseProgram
)
1176 ctx
->Driver
.UseProgram(ctx
, shProg
);
1181 * Do validation of the given shader program.
1182 * \param errMsg returns error message if validation fails.
1183 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1186 validate_shader_program(const struct gl_shader_program
*shProg
,
1189 if (!shProg
->LinkStatus
) {
1193 /* From the GL spec, a program is invalid if any of these are true:
1195 any two active samplers in the current program object are of
1196 different types, but refer to the same texture image unit,
1198 any active sampler in the current program object refers to a texture
1199 image unit where fixed-function fragment processing accesses a
1200 texture target that does not match the sampler type, or
1202 the sum of the number of active samplers in the program and the
1203 number of texture image units enabled for fixed-function fragment
1204 processing exceeds the combined limit on the total number of texture
1205 image units allowed.
1209 * Check: any two active samplers in the current program object are of
1210 * different types, but refer to the same texture image unit,
1212 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1220 * Called via glValidateProgram()
1223 validate_program(struct gl_context
*ctx
, GLuint program
)
1225 struct gl_shader_program
*shProg
;
1226 char errMsg
[100] = "";
1228 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1233 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1234 if (!shProg
->Validated
) {
1235 /* update info log */
1236 if (shProg
->InfoLog
) {
1237 ralloc_free(shProg
->InfoLog
);
1239 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1246 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1248 GET_CURRENT_CONTEXT(ctx
);
1249 attach_shader(ctx
, program
, shader
);
1254 _mesa_AttachShader(GLuint program
, GLuint shader
)
1256 GET_CURRENT_CONTEXT(ctx
);
1257 attach_shader(ctx
, program
, shader
);
1262 _mesa_CompileShader(GLhandleARB shaderObj
)
1264 GET_CURRENT_CONTEXT(ctx
);
1265 if (MESA_VERBOSE
& VERBOSE_API
)
1266 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1267 compile_shader(ctx
, shaderObj
);
1272 _mesa_CreateShader(GLenum type
)
1274 GET_CURRENT_CONTEXT(ctx
);
1275 if (MESA_VERBOSE
& VERBOSE_API
)
1276 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1277 return create_shader(ctx
, type
);
1281 GLhandleARB GLAPIENTRY
1282 _mesa_CreateShaderObjectARB(GLenum type
)
1284 GET_CURRENT_CONTEXT(ctx
);
1285 return create_shader(ctx
, type
);
1290 _mesa_CreateProgram(void)
1292 GET_CURRENT_CONTEXT(ctx
);
1293 if (MESA_VERBOSE
& VERBOSE_API
)
1294 _mesa_debug(ctx
, "glCreateProgram\n");
1295 return create_shader_program(ctx
);
1299 GLhandleARB GLAPIENTRY
1300 _mesa_CreateProgramObjectARB(void)
1302 GET_CURRENT_CONTEXT(ctx
);
1303 return create_shader_program(ctx
);
1308 _mesa_DeleteObjectARB(GLhandleARB obj
)
1310 if (MESA_VERBOSE
& VERBOSE_API
) {
1311 GET_CURRENT_CONTEXT(ctx
);
1312 _mesa_debug(ctx
, "glDeleteObjectARB(%u)\n", obj
);
1316 GET_CURRENT_CONTEXT(ctx
);
1317 FLUSH_VERTICES(ctx
, 0);
1318 if (is_program(ctx
, obj
)) {
1319 delete_shader_program(ctx
, obj
);
1321 else if (is_shader(ctx
, obj
)) {
1322 delete_shader(ctx
, obj
);
1332 _mesa_DeleteProgram(GLuint name
)
1335 GET_CURRENT_CONTEXT(ctx
);
1336 FLUSH_VERTICES(ctx
, 0);
1337 delete_shader_program(ctx
, name
);
1343 _mesa_DeleteShader(GLuint name
)
1346 GET_CURRENT_CONTEXT(ctx
);
1347 FLUSH_VERTICES(ctx
, 0);
1348 delete_shader(ctx
, name
);
1354 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1356 GET_CURRENT_CONTEXT(ctx
);
1357 detach_shader(ctx
, program
, shader
);
1362 _mesa_DetachShader(GLuint program
, GLuint shader
)
1364 GET_CURRENT_CONTEXT(ctx
);
1365 detach_shader(ctx
, program
, shader
);
1370 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1371 GLsizei
* count
, GLhandleARB
* obj
)
1373 GET_CURRENT_CONTEXT(ctx
);
1374 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1379 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1380 GLsizei
*count
, GLuint
*obj
)
1382 GET_CURRENT_CONTEXT(ctx
);
1383 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1388 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1389 GLcharARB
* infoLog
)
1391 GET_CURRENT_CONTEXT(ctx
);
1392 if (is_program(ctx
, object
)) {
1393 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1395 else if (is_shader(ctx
, object
)) {
1396 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1399 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1405 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1407 GET_CURRENT_CONTEXT(ctx
);
1408 /* Implement in terms of GetProgramiv, GetShaderiv */
1409 if (is_program(ctx
, object
)) {
1410 if (pname
== GL_OBJECT_TYPE_ARB
) {
1411 *params
= GL_PROGRAM_OBJECT_ARB
;
1414 get_programiv(ctx
, object
, pname
, params
);
1417 else if (is_shader(ctx
, object
)) {
1418 if (pname
== GL_OBJECT_TYPE_ARB
) {
1419 *params
= GL_SHADER_OBJECT_ARB
;
1422 get_shaderiv(ctx
, object
, pname
, params
);
1426 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1432 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1435 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1436 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1437 params
[0] = (GLfloat
) iparams
[0];
1442 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1444 GET_CURRENT_CONTEXT(ctx
);
1445 get_programiv(ctx
, program
, pname
, params
);
1450 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1452 GET_CURRENT_CONTEXT(ctx
);
1453 get_shaderiv(ctx
, shader
, pname
, params
);
1458 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1459 GLsizei
*length
, GLchar
*infoLog
)
1461 GET_CURRENT_CONTEXT(ctx
);
1462 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1467 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1468 GLsizei
*length
, GLchar
*infoLog
)
1470 GET_CURRENT_CONTEXT(ctx
);
1471 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1476 _mesa_GetShaderSource(GLhandleARB shader
, GLsizei maxLength
,
1477 GLsizei
*length
, GLcharARB
*sourceOut
)
1479 GET_CURRENT_CONTEXT(ctx
);
1480 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1484 GLhandleARB GLAPIENTRY
1485 _mesa_GetHandleARB(GLenum pname
)
1487 GET_CURRENT_CONTEXT(ctx
);
1488 return get_handle(ctx
, pname
);
1492 GLboolean GLAPIENTRY
1493 _mesa_IsProgram(GLuint name
)
1495 GET_CURRENT_CONTEXT(ctx
);
1496 return is_program(ctx
, name
);
1500 GLboolean GLAPIENTRY
1501 _mesa_IsShader(GLuint name
)
1503 GET_CURRENT_CONTEXT(ctx
);
1504 return is_shader(ctx
, name
);
1509 _mesa_LinkProgram(GLhandleARB programObj
)
1511 GET_CURRENT_CONTEXT(ctx
);
1512 link_program(ctx
, programObj
);
1518 * Read shader source code from a file.
1519 * Useful for debugging to override an app's shader.
1522 read_shader(const char *fname
)
1524 int shader_size
= 0;
1525 FILE *f
= fopen(fname
, "r");
1526 GLcharARB
*buffer
, *shader
;
1533 /* allocate enough room for the entire shader */
1534 fseek(f
, 0, SEEK_END
);
1535 shader_size
= ftell(f
);
1537 assert(shader_size
);
1539 /* add one for terminating zero */
1542 buffer
= malloc(shader_size
);
1545 len
= fread(buffer
, 1, shader_size
, f
);
1550 shader
= strdup(buffer
);
1558 * Called via glShaderSource() and glShaderSourceARB() API functions.
1559 * Basically, concatenate the source code strings into one long string
1560 * and pass it to _mesa_shader_source().
1563 _mesa_ShaderSource(GLhandleARB shaderObj
, GLsizei count
,
1564 const GLcharARB
* const * string
, const GLint
* length
)
1566 GET_CURRENT_CONTEXT(ctx
);
1568 GLsizei i
, totalLength
;
1572 if (!shaderObj
|| string
== NULL
) {
1573 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1578 * This array holds offsets of where the appropriate string ends, thus the
1579 * last element will be set to the total length of the source code.
1581 offsets
= malloc(count
* sizeof(GLint
));
1582 if (offsets
== NULL
) {
1583 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1587 for (i
= 0; i
< count
; i
++) {
1588 if (string
[i
] == NULL
) {
1589 free((GLvoid
*) offsets
);
1590 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1591 "glShaderSourceARB(null string)");
1594 if (length
== NULL
|| length
[i
] < 0)
1595 offsets
[i
] = strlen(string
[i
]);
1597 offsets
[i
] = length
[i
];
1598 /* accumulate string lengths */
1600 offsets
[i
] += offsets
[i
- 1];
1603 /* Total length of source string is sum off all strings plus two.
1604 * One extra byte for terminating zero, another extra byte to silence
1605 * valgrind warnings in the parser/grammer code.
1607 totalLength
= offsets
[count
- 1] + 2;
1608 source
= malloc(totalLength
* sizeof(GLcharARB
));
1609 if (source
== NULL
) {
1610 free((GLvoid
*) offsets
);
1611 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1615 for (i
= 0; i
< count
; i
++) {
1616 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1617 memcpy(source
+ start
, string
[i
],
1618 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1620 source
[totalLength
- 1] = '\0';
1621 source
[totalLength
- 2] = '\0';
1624 /* Compute the shader's source code checksum then try to open a file
1625 * named newshader_<CHECKSUM>. If it exists, use it in place of the
1626 * original shader source code. For debugging.
1629 GLcharARB
*newSource
;
1631 checksum
= _mesa_str_checksum(source
);
1633 _mesa_snprintf(filename
, sizeof(filename
), "newshader_%d", checksum
);
1635 newSource
= read_shader(filename
);
1637 fprintf(stderr
, "Mesa: Replacing shader %u chksum=%d with %s\n",
1638 shaderObj
, checksum
, filename
);
1644 shader_source(ctx
, shaderObj
, source
);
1647 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shaderObj
);
1649 sh
->SourceChecksum
= checksum
; /* save original checksum */
1657 _mesa_UseProgram(GLhandleARB program
)
1659 GET_CURRENT_CONTEXT(ctx
);
1660 struct gl_shader_program
*shProg
;
1662 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1663 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1664 "glUseProgram(transform feedback active)");
1669 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1673 if (!shProg
->LinkStatus
) {
1674 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1675 "glUseProgram(program %u not linked)", program
);
1680 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1681 print_shader_info(shProg
);
1688 /* The ARB_separate_shader_object spec says:
1690 * "The executable code for an individual shader stage is taken from
1691 * the current program for that stage. If there is a current program
1692 * object established by UseProgram, that program is considered current
1693 * for all stages. Otherwise, if there is a bound program pipeline
1694 * object (section 2.14.PPO), the program bound to the appropriate
1695 * stage of the pipeline object is considered current."
1698 /* Attach shader state to the binding point */
1699 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1700 /* Update the program */
1701 _mesa_use_program(ctx
, shProg
);
1703 /* Must be done first: detach the progam */
1704 _mesa_use_program(ctx
, shProg
);
1705 /* Unattach shader_state binding point */
1706 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1707 /* If a pipeline was bound, rebind it */
1708 if (ctx
->Pipeline
.Current
) {
1709 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1716 _mesa_ValidateProgram(GLhandleARB program
)
1718 GET_CURRENT_CONTEXT(ctx
);
1719 validate_program(ctx
, program
);
1724 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1727 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1728 GLint
* range
, GLint
* precision
)
1730 const struct gl_program_constants
*limits
;
1731 const struct gl_precision
*p
;
1732 GET_CURRENT_CONTEXT(ctx
);
1734 switch (shadertype
) {
1735 case GL_VERTEX_SHADER
:
1736 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1738 case GL_FRAGMENT_SHADER
:
1739 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1742 _mesa_error(ctx
, GL_INVALID_ENUM
,
1743 "glGetShaderPrecisionFormat(shadertype)");
1747 switch (precisiontype
) {
1749 p
= &limits
->LowFloat
;
1751 case GL_MEDIUM_FLOAT
:
1752 p
= &limits
->MediumFloat
;
1755 p
= &limits
->HighFloat
;
1758 p
= &limits
->LowInt
;
1761 p
= &limits
->MediumInt
;
1764 p
= &limits
->HighInt
;
1767 _mesa_error(ctx
, GL_INVALID_ENUM
,
1768 "glGetShaderPrecisionFormat(precisiontype)");
1772 range
[0] = p
->RangeMin
;
1773 range
[1] = p
->RangeMax
;
1774 precision
[0] = p
->Precision
;
1779 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1782 _mesa_ReleaseShaderCompiler(void)
1784 _mesa_destroy_shader_compiler_caches();
1789 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1792 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1793 const void* binary
, GLint length
)
1795 GET_CURRENT_CONTEXT(ctx
);
1797 (void) binaryformat
;
1800 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1801 * page 88 of the OpenGL 4.5 specs state:
1803 * "An INVALID_VALUE error is generated if count or length is negative.
1804 * An INVALID_ENUM error is generated if binaryformat is not a supported
1805 * format returned in SHADER_BINARY_FORMATS."
1807 if (n
< 0 || length
< 0) {
1808 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1812 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1817 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1818 GLenum
*binaryFormat
, GLvoid
*binary
)
1820 struct gl_shader_program
*shProg
;
1821 GLsizei length_dummy
;
1822 GET_CURRENT_CONTEXT(ctx
);
1825 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1829 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1833 /* The ARB_get_program_binary spec says:
1835 * "If <length> is NULL, then no length is returned."
1837 * Ensure that length always points to valid storage to avoid multiple NULL
1838 * pointer checks below.
1841 length
= &length_dummy
;
1844 /* The ARB_get_program_binary spec says:
1846 * "When a program object's LINK_STATUS is FALSE, its program binary
1847 * length is zero, and a call to GetProgramBinary will generate an
1848 * INVALID_OPERATION error.
1850 if (!shProg
->LinkStatus
) {
1851 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1852 "glGetProgramBinary(program %u not linked)",
1859 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1860 "glGetProgramBinary(driver supports zero binary formats)");
1862 (void) binaryFormat
;
1867 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1868 const GLvoid
*binary
, GLsizei length
)
1870 struct gl_shader_program
*shProg
;
1871 GET_CURRENT_CONTEXT(ctx
);
1873 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1877 (void) binaryFormat
;
1880 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
1882 * "If a negative number is provided where an argument of type sizei or
1883 * sizeiptr is specified, an INVALID_VALUE error is generated."
1886 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
1890 /* The ARB_get_program_binary spec says:
1892 * "<binaryFormat> and <binary> must be those returned by a previous
1893 * call to GetProgramBinary, and <length> must be the length of the
1894 * program binary as returned by GetProgramBinary or GetProgramiv with
1895 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
1896 * setting the LINK_STATUS of <program> to FALSE, if these conditions
1899 * Since any value of binaryFormat passed "is not one of those specified as
1900 * allowable for [this] command, an INVALID_ENUM error is generated."
1902 shProg
->LinkStatus
= GL_FALSE
;
1903 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
1908 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1910 struct gl_shader_program
*shProg
;
1911 GET_CURRENT_CONTEXT(ctx
);
1913 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1914 "glProgramParameteri");
1919 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1920 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
1921 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
1922 * even be in the dispatch table, so we shouldn't need to expclicitly
1925 * On desktop, we ignore the 3.0+ requirement because it is silly.
1928 /* The ARB_get_program_binary extension spec says:
1930 * "An INVALID_VALUE error is generated if the <value> argument to
1931 * ProgramParameteri is not TRUE or FALSE."
1933 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
1937 /* No need to notify the driver. Any changes will actually take effect
1938 * the next time the shader is linked.
1940 * The ARB_get_program_binary extension spec says:
1942 * "To indicate that a program binary is likely to be retrieved,
1943 * ProgramParameteri should be called with <pname>
1944 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
1945 * will not be in effect until the next time LinkProgram or
1946 * ProgramBinary has been called successfully."
1948 * The resloution of issue 9 in the extension spec also says:
1950 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
1951 * to indicate to the GL implementation that this program will
1952 * likely be saved with GetProgramBinary at some point. This will
1953 * give the GL implementation the opportunity to track any state
1954 * changes made to the program before being saved such that when it
1955 * is loaded again a recompile can be avoided."
1957 shProg
->BinaryRetreivableHint
= value
;
1960 case GL_PROGRAM_SEPARABLE
:
1961 /* Spec imply that the behavior is the same as ARB_get_program_binary
1962 * Chapter 7.3 Program Objects
1964 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
1967 shProg
->SeparateShader
= value
;
1971 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
1972 _mesa_enum_to_string(pname
));
1977 _mesa_error(ctx
, GL_INVALID_VALUE
,
1978 "glProgramParameteri(pname=%s, value=%d): "
1979 "value must be 0 or 1.",
1980 _mesa_enum_to_string(pname
),
1986 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
1987 struct gl_shader_program
*shProg
,
1988 struct gl_pipeline_object
*shTarget
)
1990 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
1991 use_shader_program(ctx
, stage
, shProg
, shTarget
);
1993 if (ctx
->Driver
.UseProgram
)
1994 ctx
->Driver
.UseProgram(ctx
, shProg
);
1999 _mesa_create_shader_program(struct gl_context
* ctx
, GLboolean separate
,
2000 GLenum type
, GLsizei count
,
2001 const GLchar
* const *strings
)
2003 const GLuint shader
= create_shader(ctx
, type
);
2007 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2008 * GL_INVALID_VALUE should be generated if count < 0
2011 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2016 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2018 compile_shader(ctx
, shader
);
2020 program
= create_shader_program(ctx
);
2022 struct gl_shader_program
*shProg
;
2023 struct gl_shader
*sh
;
2024 GLint compiled
= GL_FALSE
;
2026 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2027 sh
= _mesa_lookup_shader(ctx
, shader
);
2029 shProg
->SeparateShader
= separate
;
2031 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2033 attach_shader(ctx
, program
, shader
);
2034 link_program(ctx
, program
);
2035 detach_shader(ctx
, program
, shader
);
2039 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2040 append
-error
-to
-info
-log
;
2041 shProg
->LinkStatus
= GL_FALSE
;
2046 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2049 delete_shader(ctx
, shader
);
2057 * Copy program-specific data generated by linking from the gl_shader_program
2058 * object to a specific gl_program object.
2061 _mesa_copy_linked_program_data(gl_shader_stage type
,
2062 const struct gl_shader_program
*src
,
2063 struct gl_program
*dst
)
2066 case MESA_SHADER_VERTEX
:
2067 dst
->UsesClipDistanceOut
= src
->Vert
.UsesClipDistance
;
2069 case MESA_SHADER_TESS_CTRL
: {
2070 struct gl_tess_ctrl_program
*dst_tcp
=
2071 (struct gl_tess_ctrl_program
*) dst
;
2072 dst_tcp
->VerticesOut
= src
->TessCtrl
.VerticesOut
;
2075 case MESA_SHADER_TESS_EVAL
: {
2076 struct gl_tess_eval_program
*dst_tep
=
2077 (struct gl_tess_eval_program
*) dst
;
2078 dst_tep
->PrimitiveMode
= src
->TessEval
.PrimitiveMode
;
2079 dst_tep
->Spacing
= src
->TessEval
.Spacing
;
2080 dst_tep
->VertexOrder
= src
->TessEval
.VertexOrder
;
2081 dst_tep
->PointMode
= src
->TessEval
.PointMode
;
2082 dst
->UsesClipDistanceOut
= src
->TessEval
.UsesClipDistance
;
2085 case MESA_SHADER_GEOMETRY
: {
2086 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
2087 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
2088 dst_gp
->VerticesOut
= src
->Geom
.VerticesOut
;
2089 dst_gp
->Invocations
= src
->Geom
.Invocations
;
2090 dst_gp
->InputType
= src
->Geom
.InputType
;
2091 dst_gp
->OutputType
= src
->Geom
.OutputType
;
2092 dst
->UsesClipDistanceOut
= src
->Geom
.UsesClipDistance
;
2093 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;
2094 dst_gp
->UsesStreams
= src
->Geom
.UsesStreams
;
2097 case MESA_SHADER_FRAGMENT
: {
2098 struct gl_fragment_program
*dst_fp
= (struct gl_fragment_program
*) dst
;
2099 dst_fp
->FragDepthLayout
= src
->FragDepthLayout
;
2102 case MESA_SHADER_COMPUTE
: {
2103 struct gl_compute_program
*dst_cp
= (struct gl_compute_program
*) dst
;
2105 for (i
= 0; i
< 3; i
++)
2106 dst_cp
->LocalSize
[i
] = src
->Comp
.LocalSize
[i
];
2115 * ARB_separate_shader_objects: Compile & Link Program
2118 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2119 const GLchar
* const *strings
)
2121 GET_CURRENT_CONTEXT(ctx
);
2123 return _mesa_create_shader_program(ctx
, GL_TRUE
, type
, count
, strings
);
2128 * For GL_ARB_tessellation_shader
2130 extern void GLAPIENTRY
2131 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2133 GET_CURRENT_CONTEXT(ctx
);
2135 if (!_mesa_has_tessellation(ctx
)) {
2136 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2140 if (pname
!= GL_PATCH_VERTICES
) {
2141 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2145 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2146 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2150 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2154 extern void GLAPIENTRY
2155 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2157 GET_CURRENT_CONTEXT(ctx
);
2159 if (!_mesa_has_tessellation(ctx
)) {
2160 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2165 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2166 FLUSH_VERTICES(ctx
, 0);
2167 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2168 4 * sizeof(GLfloat
));
2169 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2171 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2172 FLUSH_VERTICES(ctx
, 0);
2173 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2174 2 * sizeof(GLfloat
));
2175 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2178 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2184 * ARB_shader_subroutine
2187 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2190 GET_CURRENT_CONTEXT(ctx
);
2191 const char *api_name
= "glGetSubroutineUniformLocation";
2192 struct gl_shader_program
*shProg
;
2193 GLenum resource_type
;
2194 gl_shader_stage stage
;
2196 if (!_mesa_has_shader_subroutine(ctx
)) {
2197 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2201 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2202 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2206 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2210 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2211 if (!shProg
->_LinkedShaders
[stage
]) {
2212 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2216 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2217 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2221 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2224 GET_CURRENT_CONTEXT(ctx
);
2225 const char *api_name
= "glGetSubroutineIndex";
2226 struct gl_shader_program
*shProg
;
2227 struct gl_program_resource
*res
;
2228 GLenum resource_type
;
2229 gl_shader_stage stage
;
2231 if (!_mesa_has_shader_subroutine(ctx
)) {
2232 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2236 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2237 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2241 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2245 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2246 if (!shProg
->_LinkedShaders
[stage
]) {
2247 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2251 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2252 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2254 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2258 return _mesa_program_resource_index(shProg
, res
);
2263 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2264 GLuint index
, GLenum pname
, GLint
*values
)
2266 GET_CURRENT_CONTEXT(ctx
);
2267 const char *api_name
= "glGetActiveSubroutineUniformiv";
2268 struct gl_shader_program
*shProg
;
2269 struct gl_shader
*sh
;
2270 gl_shader_stage stage
;
2271 struct gl_program_resource
*res
;
2272 const struct gl_uniform_storage
*uni
;
2273 GLenum resource_type
;
2276 if (!_mesa_has_shader_subroutine(ctx
)) {
2277 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2281 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2282 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2286 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2290 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2291 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2293 sh
= shProg
->_LinkedShaders
[stage
];
2295 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2300 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2301 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2304 values
[0] = uni
->num_compatible_subroutines
;
2308 case GL_COMPATIBLE_SUBROUTINES
: {
2309 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2313 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2314 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2315 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2316 if (fn
->types
[j
] == uni
->type
) {
2317 values
[count
++] = i
;
2325 case GL_UNIFORM_SIZE
:
2326 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2329 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2332 case GL_UNIFORM_NAME_LENGTH
:
2333 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2335 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2336 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);;
2340 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2347 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2348 GLuint index
, GLsizei bufsize
,
2349 GLsizei
*length
, GLchar
*name
)
2351 GET_CURRENT_CONTEXT(ctx
);
2352 const char *api_name
= "glGetActiveSubroutineUniformName";
2353 struct gl_shader_program
*shProg
;
2354 GLenum resource_type
;
2355 gl_shader_stage stage
;
2357 if (!_mesa_has_shader_subroutine(ctx
)) {
2358 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2362 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2363 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2367 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2371 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2372 if (!shProg
->_LinkedShaders
[stage
]) {
2373 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2377 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2378 /* get program resource name */
2379 _mesa_get_program_resource_name(shProg
, resource_type
,
2381 length
, name
, api_name
);
2386 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2387 GLuint index
, GLsizei bufsize
,
2388 GLsizei
*length
, GLchar
*name
)
2390 GET_CURRENT_CONTEXT(ctx
);
2391 const char *api_name
= "glGetActiveSubroutineName";
2392 struct gl_shader_program
*shProg
;
2393 GLenum resource_type
;
2394 gl_shader_stage stage
;
2396 if (!_mesa_has_shader_subroutine(ctx
)) {
2397 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2401 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2402 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2406 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2410 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2411 if (!shProg
->_LinkedShaders
[stage
]) {
2412 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2415 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2416 _mesa_get_program_resource_name(shProg
, resource_type
,
2418 length
, name
, api_name
);
2423 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2424 const GLuint
*indices
)
2426 GET_CURRENT_CONTEXT(ctx
);
2427 const char *api_name
= "glUniformSubroutinesuiv";
2428 struct gl_shader_program
*shProg
;
2429 struct gl_shader
*sh
;
2430 gl_shader_stage stage
;
2433 if (!_mesa_has_shader_subroutine(ctx
)) {
2434 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2438 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2439 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2443 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2444 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2446 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2450 sh
= shProg
->_LinkedShaders
[stage
];
2452 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2456 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2457 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2463 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2464 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2467 for (j
= i
; j
< i
+ uni_count
; j
++) {
2468 struct gl_subroutine_function
*subfn
;
2469 if (indices
[j
] >= sh
->NumSubroutineFunctions
) {
2470 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2474 subfn
= &sh
->SubroutineFunctions
[indices
[j
]];
2475 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2476 if (subfn
->types
[k
] == uni
->type
)
2479 if (k
== subfn
->num_compat_types
) {
2480 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2487 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2490 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2491 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2493 memcpy(&uni
->storage
[0], &indices
[i
],
2494 sizeof(GLuint
) * uni_count
);
2496 uni
->initialized
= true;
2497 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2504 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2507 GET_CURRENT_CONTEXT(ctx
);
2508 const char *api_name
= "glGetUniformSubroutineuiv";
2509 struct gl_shader_program
*shProg
;
2510 struct gl_shader
*sh
;
2511 gl_shader_stage stage
;
2513 if (!_mesa_has_shader_subroutine(ctx
)) {
2514 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2518 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2519 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2523 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2524 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2526 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2530 sh
= shProg
->_LinkedShaders
[stage
];
2532 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2536 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2537 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2542 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[location
];
2543 int offset
= location
- uni
->subroutine
[stage
].index
;
2544 memcpy(params
, &uni
->storage
[offset
],
2551 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2552 GLenum pname
, GLint
*values
)
2554 GET_CURRENT_CONTEXT(ctx
);
2555 const char *api_name
= "glGetProgramStageiv";
2556 struct gl_shader_program
*shProg
;
2557 struct gl_shader
*sh
;
2558 gl_shader_stage stage
;
2560 if (!_mesa_has_shader_subroutine(ctx
)) {
2561 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2565 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2566 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2570 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2574 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2575 sh
= shProg
->_LinkedShaders
[stage
];
2577 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2582 case GL_ACTIVE_SUBROUTINES
:
2583 values
[0] = sh
->NumSubroutineFunctions
;
2585 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2586 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2588 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2589 values
[0] = sh
->NumSubroutineUniformTypes
;
2591 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2595 GLenum resource_type
;
2596 struct gl_program_resource
*res
;
2598 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2599 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2600 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2602 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2607 values
[0] = max_len
;
2610 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2614 GLenum resource_type
;
2615 struct gl_program_resource
*res
;
2617 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2618 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2619 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2621 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2622 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2628 values
[0] = max_len
;
2632 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2639 find_compat_subroutine(struct gl_shader
*sh
, const struct glsl_type
*type
)
2643 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2644 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2645 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2646 if (fn
->types
[j
] == type
)
2654 _mesa_shader_init_subroutine_defaults(struct gl_shader
*sh
)
2658 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2659 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2665 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2666 val
= find_compat_subroutine(sh
, uni
->type
);
2668 for (j
= 0; j
< uni_count
; j
++)
2669 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2670 uni
->initialized
= true;
2671 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2676 _mesa_shader_program_init_subroutine_defaults(struct gl_shader_program
*shProg
)
2683 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2684 if (!shProg
->_LinkedShaders
[i
])
2687 _mesa_shader_init_subroutine_defaults(shProg
->_LinkedShaders
[i
]);