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 OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 * Implementation of GLSL-related API functions.
30 * The glUniform* functions are in uniforms.c
34 * 1. Check that the right error code is generated for all _mesa_error() calls.
35 * 2. Insert FLUSH_VERTICES calls in various places
39 #include "main/glheader.h"
40 #include "main/context.h"
41 #include "main/dispatch.h"
42 #include "main/enums.h"
43 #include "main/hash.h"
44 #include "main/mtypes.h"
45 #include "main/shaderapi.h"
46 #include "main/shaderobj.h"
47 #include "main/transformfeedback.h"
48 #include "main/uniforms.h"
49 #include "program/program.h"
50 #include "program/prog_parameter.h"
53 #include "../glsl/glsl_parser_extras.h"
54 #include "../glsl/ir_uniform.h"
56 /** Define this to enable shader substitution (see below) */
57 #define SHADER_SUBST 0
61 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
64 get_shader_flags(void)
66 GLbitfield flags
= 0x0;
67 const char *env
= _mesa_getenv("MESA_GLSL");
70 if (strstr(env
, "dump"))
72 if (strstr(env
, "log"))
74 if (strstr(env
, "nopvert"))
75 flags
|= GLSL_NOP_VERT
;
76 if (strstr(env
, "nopfrag"))
77 flags
|= GLSL_NOP_FRAG
;
78 if (strstr(env
, "nopt"))
80 else if (strstr(env
, "opt"))
82 if (strstr(env
, "uniform"))
83 flags
|= GLSL_UNIFORMS
;
84 if (strstr(env
, "useprog"))
85 flags
|= GLSL_USE_PROG
;
86 if (strstr(env
, "errors"))
87 flags
|= GLSL_REPORT_ERRORS
;
95 * Initialize context's shader state.
98 _mesa_init_shader_state(struct gl_context
*ctx
)
100 /* Device drivers may override these to control what kind of instructions
101 * are generated by the GLSL compiler.
103 struct gl_shader_compiler_options options
;
106 memset(&options
, 0, sizeof(options
));
107 options
.MaxUnrollIterations
= 32;
108 options
.MaxIfDepth
= UINT_MAX
;
110 /* Default pragma settings */
111 options
.DefaultPragmas
.Optimize
= GL_TRUE
;
113 for (sh
= 0; sh
< MESA_SHADER_TYPES
; ++sh
)
114 memcpy(&ctx
->ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
116 ctx
->Shader
.Flags
= get_shader_flags();
121 * Free the per-context shader-related state.
124 _mesa_free_shader_state(struct gl_context
*ctx
)
126 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentVertexProgram
, NULL
);
127 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentGeometryProgram
,
129 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentFragmentProgram
,
131 _mesa_reference_shader_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
,
133 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
138 * Copy string from <src> to <dst>, up to maxLength characters, returning
139 * length of <dst> in <length>.
140 * \param src the strings source
141 * \param maxLength max chars to copy
142 * \param length returns number of chars copied
143 * \param dst the string destination
146 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
147 GLsizei
*length
, const GLchar
*src
)
150 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
161 * Confirm that the a shader type is valid and supported by the implementation
163 * \param ctx Current GL context
164 * \param type Shader target
168 validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
171 case GL_FRAGMENT_SHADER
:
172 return ctx
->Extensions
.ARB_fragment_shader
;
173 case GL_VERTEX_SHADER
:
174 return ctx
->Extensions
.ARB_vertex_shader
;
175 case GL_GEOMETRY_SHADER_ARB
:
176 return _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_geometry_shader4
;
184 is_program(struct gl_context
*ctx
, GLuint name
)
186 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
187 return shProg
? GL_TRUE
: GL_FALSE
;
192 is_shader(struct gl_context
*ctx
, GLuint name
)
194 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
195 return shader
? GL_TRUE
: GL_FALSE
;
200 * Attach shader to a shader program.
203 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
205 struct gl_shader_program
*shProg
;
206 struct gl_shader
*sh
;
209 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
211 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
215 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
220 n
= shProg
->NumShaders
;
221 for (i
= 0; i
< n
; i
++) {
222 if (shProg
->Shaders
[i
] == sh
) {
223 /* The shader is already attched to this program. The
224 * GL_ARB_shader_objects spec says:
226 * "The error INVALID_OPERATION is generated by AttachObjectARB
227 * if <obj> is already attached to <containerObj>."
229 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
231 } else if (same_type_disallowed
&&
232 shProg
->Shaders
[i
]->Type
== sh
->Type
) {
233 /* Shader with the same type is already attached to this program,
234 * OpenGL ES 2.0 and 3.0 specs say:
236 * "Multiple shader objects of the same type may not be attached
237 * to a single program object. [...] The error INVALID_OPERATION
238 * is generated if [...] another shader object of the same type
239 * as shader is already attached to program."
241 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
247 shProg
->Shaders
= (struct gl_shader
**)
248 _mesa_realloc(shProg
->Shaders
,
249 n
* sizeof(struct gl_shader
*),
250 (n
+ 1) * sizeof(struct gl_shader
*));
251 if (!shProg
->Shaders
) {
252 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
257 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
258 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
259 shProg
->NumShaders
++;
264 create_shader(struct gl_context
*ctx
, GLenum type
)
266 struct gl_shader
*sh
;
269 if (!validate_shader_target(ctx
, type
)) {
270 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(type)");
274 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
275 sh
= ctx
->Driver
.NewShader(ctx
, name
, type
);
276 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, sh
);
283 create_shader_program(struct gl_context
*ctx
)
286 struct gl_shader_program
*shProg
;
288 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
290 shProg
= ctx
->Driver
.NewShaderProgram(ctx
, name
);
292 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, shProg
);
294 assert(shProg
->RefCount
== 1);
301 * Named w/ "2" to indicate OpenGL 2.x vs GL_ARB_fragment_programs's
305 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
308 * NOTE: deleting shaders/programs works a bit differently than
309 * texture objects (and buffer objects, etc). Shader/program
310 * handles/IDs exist in the hash table until the object is really
311 * deleted (refcount==0). With texture objects, the handle/ID is
312 * removed from the hash table in glDeleteTextures() while the tex
313 * object itself might linger until its refcount goes to zero.
315 struct gl_shader_program
*shProg
;
317 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
321 if (!shProg
->DeletePending
) {
322 shProg
->DeletePending
= GL_TRUE
;
324 /* effectively, decr shProg's refcount */
325 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
331 delete_shader(struct gl_context
*ctx
, GLuint shader
)
333 struct gl_shader
*sh
;
335 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
339 if (!sh
->DeletePending
) {
340 sh
->DeletePending
= GL_TRUE
;
342 /* effectively, decr sh's refcount */
343 _mesa_reference_shader(ctx
, &sh
, NULL
);
349 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
351 struct gl_shader_program
*shProg
;
355 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
359 n
= shProg
->NumShaders
;
361 for (i
= 0; i
< n
; i
++) {
362 if (shProg
->Shaders
[i
]->Name
== shader
) {
364 struct gl_shader
**newList
;
367 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
369 /* alloc new, smaller array */
371 malloc((n
- 1) * sizeof(struct gl_shader
*));
373 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
376 for (j
= 0; j
< i
; j
++) {
377 newList
[j
] = shProg
->Shaders
[j
];
380 newList
[j
++] = shProg
->Shaders
[i
];
381 free(shProg
->Shaders
);
383 shProg
->Shaders
= newList
;
384 shProg
->NumShaders
= n
- 1;
389 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
390 assert(shProg
->Shaders
[j
]->Type
== GL_VERTEX_SHADER
||
391 shProg
->Shaders
[j
]->Type
== GL_FRAGMENT_SHADER
);
392 assert(shProg
->Shaders
[j
]->RefCount
> 0);
404 if (is_shader(ctx
, shader
))
405 err
= GL_INVALID_OPERATION
;
406 else if (is_program(ctx
, shader
))
407 err
= GL_INVALID_OPERATION
;
409 err
= GL_INVALID_VALUE
;
410 _mesa_error(ctx
, err
, "glDetachProgram(shader)");
417 * Return list of shaders attached to shader program.
420 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
421 GLsizei
*count
, GLuint
*obj
)
423 struct gl_shader_program
*shProg
=
424 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
427 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
428 obj
[i
] = shProg
->Shaders
[i
]->Name
;
437 * glGetHandleARB() - return ID/name of currently bound shader program.
440 get_handle(struct gl_context
*ctx
, GLenum pname
)
442 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
443 if (ctx
->Shader
.ActiveProgram
)
444 return ctx
->Shader
.ActiveProgram
->Name
;
449 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
456 * glGetProgramiv() - get shader program state.
457 * Note that this is for GLSL shader programs, not ARB vertex/fragment
458 * programs (see glGetProgramivARB).
461 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
, GLint
*params
)
463 struct gl_shader_program
*shProg
464 = _mesa_lookup_shader_program(ctx
, program
);
466 /* Is transform feedback available in this context?
469 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
470 || ctx
->API
== API_OPENGL_CORE
471 || _mesa_is_gles3(ctx
);
473 /* Are geometry shaders available in this context?
476 _mesa_is_desktop_gl(ctx
) && ctx
->Extensions
.ARB_geometry_shader4
;
478 /* Are uniform buffer objects available in this context?
481 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_uniform_buffer_object
)
482 || ctx
->API
== API_OPENGL_CORE
483 || _mesa_is_gles3(ctx
);
486 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramiv(program)");
491 case GL_DELETE_STATUS
:
492 *params
= shProg
->DeletePending
;
495 *params
= shProg
->LinkStatus
;
497 case GL_VALIDATE_STATUS
:
498 *params
= shProg
->Validated
;
500 case GL_INFO_LOG_LENGTH
:
501 *params
= shProg
->InfoLog
? strlen(shProg
->InfoLog
) + 1 : 0;
503 case GL_ATTACHED_SHADERS
:
504 *params
= shProg
->NumShaders
;
506 case GL_ACTIVE_ATTRIBUTES
:
507 *params
= _mesa_count_active_attribs(shProg
);
509 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
510 *params
= _mesa_longest_attribute_name_length(shProg
);
512 case GL_ACTIVE_UNIFORMS
:
513 *params
= shProg
->NumUserUniformStorage
;
515 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
519 for (i
= 0; i
< shProg
->NumUserUniformStorage
; i
++) {
520 /* Add one for the terminating NUL character for a non-array, and
521 * 4 for the "[0]" and the NUL for an array.
523 const GLint len
= strlen(shProg
->UniformStorage
[i
].name
) + 1 +
524 ((shProg
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
533 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
536 *params
= shProg
->TransformFeedback
.NumVarying
;
538 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
544 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
545 /* Add one for the terminating NUL character.
547 const GLint len
= strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
556 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
559 *params
= shProg
->TransformFeedback
.BufferMode
;
561 case GL_GEOMETRY_VERTICES_OUT_ARB
:
564 *params
= shProg
->Geom
.VerticesOut
;
566 case GL_GEOMETRY_INPUT_TYPE_ARB
:
569 *params
= shProg
->Geom
.InputType
;
571 case GL_GEOMETRY_OUTPUT_TYPE_ARB
:
574 *params
= shProg
->Geom
.OutputType
;
576 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
583 for (i
= 0; i
< shProg
->NumUniformBlocks
; i
++) {
584 /* Add one for the terminating NUL character.
586 const GLint len
= strlen(shProg
->UniformBlocks
[i
].Name
) + 1;
595 case GL_ACTIVE_UNIFORM_BLOCKS
:
599 *params
= shProg
->NumUniformBlocks
;
601 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
602 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
603 * only available with desktop OpenGL 3.0+ with the
604 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
606 * On desktop, we ignore the 3.0+ requirement because it is silly.
608 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
611 *params
= shProg
->BinaryRetreivableHint
;
613 case GL_PROGRAM_BINARY_LENGTH
:
620 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
621 _mesa_lookup_enum_by_nr(pname
));
626 * glGetShaderiv() - get GLSL shader state
629 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
631 struct gl_shader
*shader
=
632 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
640 *params
= shader
->Type
;
642 case GL_DELETE_STATUS
:
643 *params
= shader
->DeletePending
;
645 case GL_COMPILE_STATUS
:
646 *params
= shader
->CompileStatus
;
648 case GL_INFO_LOG_LENGTH
:
649 *params
= shader
->InfoLog
? strlen(shader
->InfoLog
) + 1 : 0;
651 case GL_SHADER_SOURCE_LENGTH
:
652 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
655 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
662 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
663 GLsizei
*length
, GLchar
*infoLog
)
665 struct gl_shader_program
*shProg
666 = _mesa_lookup_shader_program(ctx
, program
);
668 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(program)");
671 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
676 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
677 GLsizei
*length
, GLchar
*infoLog
)
679 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
681 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(shader)");
684 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
689 * Return shader source code.
692 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
693 GLsizei
*length
, GLchar
*sourceOut
)
695 struct gl_shader
*sh
;
696 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
700 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
705 * Set/replace shader source code. A helper function used by
706 * glShaderSource[ARB] and glCreateShaderProgramEXT.
709 shader_source(struct gl_context
*ctx
, GLuint shader
, const GLchar
*source
)
711 struct gl_shader
*sh
;
713 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glShaderSource");
717 /* free old shader source string and install new one */
718 free((void *)sh
->Source
);
720 sh
->CompileStatus
= GL_FALSE
;
722 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
731 compile_shader(struct gl_context
*ctx
, GLuint shaderObj
)
733 struct gl_shader
*sh
;
734 struct gl_shader_compiler_options
*options
;
736 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glCompileShader");
740 options
= &ctx
->ShaderCompilerOptions
[_mesa_shader_type_to_index(sh
->Type
)];
742 /* set default pragma state for shader */
743 sh
->Pragmas
= options
->DefaultPragmas
;
745 /* this call will set the sh->CompileStatus field to indicate if
746 * compilation was successful.
748 _mesa_glsl_compile_shader(ctx
, sh
);
750 if (sh
->CompileStatus
== GL_FALSE
&&
751 (ctx
->Shader
.Flags
& GLSL_REPORT_ERRORS
)) {
752 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
753 sh
->Name
, sh
->InfoLog
);
759 * Link a program's shaders.
762 link_program(struct gl_context
*ctx
, GLuint program
)
764 struct gl_shader_program
*shProg
;
765 struct gl_transform_feedback_object
*obj
=
766 ctx
->TransformFeedback
.CurrentObject
;
768 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glLinkProgram");
773 && (shProg
== ctx
->Shader
.CurrentVertexProgram
774 || shProg
== ctx
->Shader
.CurrentGeometryProgram
775 || shProg
== ctx
->Shader
.CurrentFragmentProgram
)) {
776 _mesa_error(ctx
, GL_INVALID_OPERATION
,
777 "glLinkProgram(transform feedback active)");
781 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
783 _mesa_glsl_link_shader(ctx
, shProg
);
785 if (shProg
->LinkStatus
== GL_FALSE
&&
786 (ctx
->Shader
.Flags
& GLSL_REPORT_ERRORS
)) {
787 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
788 shProg
->Name
, shProg
->InfoLog
);
795 printf("Link %u shaders in program %u: %s\n",
796 shProg
->NumShaders
, shProg
->Name
,
797 shProg
->LinkStatus
? "Success" : "Failed");
799 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
800 printf(" shader %u, type 0x%x\n",
801 shProg
->Shaders
[i
]->Name
,
802 shProg
->Shaders
[i
]->Type
);
809 * Print basic shader info (for debug).
812 print_shader_info(const struct gl_shader_program
*shProg
)
816 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
817 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
819 switch (shProg
->Shaders
[i
]->Type
) {
820 case GL_VERTEX_SHADER
:
823 case GL_FRAGMENT_SHADER
:
826 case GL_GEOMETRY_SHADER
:
832 printf(" %s shader %u, checksum %u\n", s
,
833 shProg
->Shaders
[i
]->Name
,
834 shProg
->Shaders
[i
]->SourceChecksum
);
836 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
837 printf(" vert prog %u\n",
838 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
839 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
840 printf(" frag prog %u\n",
841 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
842 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
843 printf(" geom prog %u\n",
844 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
849 * Use the named shader program for subsequent glUniform calls
852 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
855 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
856 _mesa_error(ctx
, GL_INVALID_OPERATION
,
857 "%s(program %u not linked)", caller
, shProg
->Name
);
861 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
862 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
869 use_shader_program(struct gl_context
*ctx
, GLenum type
,
870 struct gl_shader_program
*shProg
)
872 struct gl_shader_program
**target
;
875 case GL_VERTEX_SHADER
:
876 target
= &ctx
->Shader
.CurrentVertexProgram
;
878 || (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
] == NULL
)) {
882 case GL_GEOMETRY_SHADER_ARB
:
883 target
= &ctx
->Shader
.CurrentGeometryProgram
;
885 || (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] == NULL
)) {
889 case GL_FRAGMENT_SHADER
:
890 target
= &ctx
->Shader
.CurrentFragmentProgram
;
892 || (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
] == NULL
)) {
900 if (*target
!= shProg
) {
901 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
903 /* If the shader is also bound as the current rendering shader, unbind
904 * it from that binding point as well. This ensures that the correct
905 * semantics of glDeleteProgram are maintained.
908 case GL_VERTEX_SHADER
:
911 case GL_GEOMETRY_SHADER_ARB
:
914 case GL_FRAGMENT_SHADER
:
915 if (*target
== ctx
->Shader
._CurrentFragmentProgram
) {
916 _mesa_reference_shader_program(ctx
,
917 &ctx
->Shader
._CurrentFragmentProgram
,
923 _mesa_reference_shader_program(ctx
, target
, shProg
);
931 * Use the named shader program for subsequent rendering.
934 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
936 use_shader_program(ctx
, GL_VERTEX_SHADER
, shProg
);
937 use_shader_program(ctx
, GL_GEOMETRY_SHADER_ARB
, shProg
);
938 use_shader_program(ctx
, GL_FRAGMENT_SHADER
, shProg
);
939 _mesa_active_program(ctx
, shProg
, "glUseProgram");
941 if (ctx
->Driver
.UseProgram
)
942 ctx
->Driver
.UseProgram(ctx
, shProg
);
947 * Do validation of the given shader program.
948 * \param errMsg returns error message if validation fails.
949 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
952 validate_shader_program(const struct gl_shader_program
*shProg
,
955 if (!shProg
->LinkStatus
) {
959 /* From the GL spec, a program is invalid if any of these are true:
961 any two active samplers in the current program object are of
962 different types, but refer to the same texture image unit,
964 any active sampler in the current program object refers to a texture
965 image unit where fixed-function fragment processing accesses a
966 texture target that does not match the sampler type, or
968 the sum of the number of active samplers in the program and the
969 number of texture image units enabled for fixed-function fragment
970 processing exceeds the combined limit on the total number of texture
976 * Check: any two active samplers in the current program object are of
977 * different types, but refer to the same texture image unit,
979 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
987 * Called via glValidateProgram()
990 validate_program(struct gl_context
*ctx
, GLuint program
)
992 struct gl_shader_program
*shProg
;
993 char errMsg
[100] = "";
995 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1000 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1001 if (!shProg
->Validated
) {
1002 /* update info log */
1003 if (shProg
->InfoLog
) {
1004 ralloc_free(shProg
->InfoLog
);
1006 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1013 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1015 GET_CURRENT_CONTEXT(ctx
);
1016 attach_shader(ctx
, program
, shader
);
1021 _mesa_AttachShader(GLuint program
, GLuint shader
)
1023 GET_CURRENT_CONTEXT(ctx
);
1024 attach_shader(ctx
, program
, shader
);
1029 _mesa_CompileShader(GLhandleARB shaderObj
)
1031 GET_CURRENT_CONTEXT(ctx
);
1032 if (MESA_VERBOSE
& VERBOSE_API
)
1033 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1034 compile_shader(ctx
, shaderObj
);
1039 _mesa_CreateShader(GLenum type
)
1041 GET_CURRENT_CONTEXT(ctx
);
1042 if (MESA_VERBOSE
& VERBOSE_API
)
1043 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_lookup_enum_by_nr(type
));
1044 return create_shader(ctx
, type
);
1048 GLhandleARB GLAPIENTRY
1049 _mesa_CreateShaderObjectARB(GLenum type
)
1051 GET_CURRENT_CONTEXT(ctx
);
1052 return create_shader(ctx
, type
);
1057 _mesa_CreateProgram(void)
1059 GET_CURRENT_CONTEXT(ctx
);
1060 if (MESA_VERBOSE
& VERBOSE_API
)
1061 _mesa_debug(ctx
, "glCreateProgram\n");
1062 return create_shader_program(ctx
);
1066 GLhandleARB GLAPIENTRY
1067 _mesa_CreateProgramObjectARB(void)
1069 GET_CURRENT_CONTEXT(ctx
);
1070 return create_shader_program(ctx
);
1075 _mesa_DeleteObjectARB(GLhandleARB obj
)
1077 if (MESA_VERBOSE
& VERBOSE_API
) {
1078 GET_CURRENT_CONTEXT(ctx
);
1079 _mesa_debug(ctx
, "glDeleteObjectARB(%u)\n", obj
);
1083 GET_CURRENT_CONTEXT(ctx
);
1084 FLUSH_VERTICES(ctx
, 0);
1085 if (is_program(ctx
, obj
)) {
1086 delete_shader_program(ctx
, obj
);
1088 else if (is_shader(ctx
, obj
)) {
1089 delete_shader(ctx
, obj
);
1099 _mesa_DeleteProgram(GLuint name
)
1102 GET_CURRENT_CONTEXT(ctx
);
1103 FLUSH_VERTICES(ctx
, 0);
1104 delete_shader_program(ctx
, name
);
1110 _mesa_DeleteShader(GLuint name
)
1113 GET_CURRENT_CONTEXT(ctx
);
1114 FLUSH_VERTICES(ctx
, 0);
1115 delete_shader(ctx
, name
);
1121 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1123 GET_CURRENT_CONTEXT(ctx
);
1124 detach_shader(ctx
, program
, shader
);
1129 _mesa_DetachShader(GLuint program
, GLuint shader
)
1131 GET_CURRENT_CONTEXT(ctx
);
1132 detach_shader(ctx
, program
, shader
);
1137 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1138 GLsizei
* count
, GLhandleARB
* obj
)
1140 GET_CURRENT_CONTEXT(ctx
);
1141 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1146 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1147 GLsizei
*count
, GLuint
*obj
)
1149 GET_CURRENT_CONTEXT(ctx
);
1150 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1155 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1156 GLcharARB
* infoLog
)
1158 GET_CURRENT_CONTEXT(ctx
);
1159 if (is_program(ctx
, object
)) {
1160 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1162 else if (is_shader(ctx
, object
)) {
1163 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1166 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1172 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1174 GET_CURRENT_CONTEXT(ctx
);
1175 /* Implement in terms of GetProgramiv, GetShaderiv */
1176 if (is_program(ctx
, object
)) {
1177 if (pname
== GL_OBJECT_TYPE_ARB
) {
1178 *params
= GL_PROGRAM_OBJECT_ARB
;
1181 get_programiv(ctx
, object
, pname
, params
);
1184 else if (is_shader(ctx
, object
)) {
1185 if (pname
== GL_OBJECT_TYPE_ARB
) {
1186 *params
= GL_SHADER_OBJECT_ARB
;
1189 get_shaderiv(ctx
, object
, pname
, params
);
1193 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1199 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1202 GLint iparams
[1]; /* XXX is one element enough? */
1203 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1204 params
[0] = (GLfloat
) iparams
[0];
1209 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1211 GET_CURRENT_CONTEXT(ctx
);
1212 get_programiv(ctx
, program
, pname
, params
);
1217 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1219 GET_CURRENT_CONTEXT(ctx
);
1220 get_shaderiv(ctx
, shader
, pname
, params
);
1225 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1226 GLsizei
*length
, GLchar
*infoLog
)
1228 GET_CURRENT_CONTEXT(ctx
);
1229 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1234 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1235 GLsizei
*length
, GLchar
*infoLog
)
1237 GET_CURRENT_CONTEXT(ctx
);
1238 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1243 _mesa_GetShaderSource(GLhandleARB shader
, GLsizei maxLength
,
1244 GLsizei
*length
, GLcharARB
*sourceOut
)
1246 GET_CURRENT_CONTEXT(ctx
);
1247 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1251 GLhandleARB GLAPIENTRY
1252 _mesa_GetHandleARB(GLenum pname
)
1254 GET_CURRENT_CONTEXT(ctx
);
1255 return get_handle(ctx
, pname
);
1259 GLboolean GLAPIENTRY
1260 _mesa_IsProgram(GLuint name
)
1262 GET_CURRENT_CONTEXT(ctx
);
1263 return is_program(ctx
, name
);
1267 GLboolean GLAPIENTRY
1268 _mesa_IsShader(GLuint name
)
1270 GET_CURRENT_CONTEXT(ctx
);
1271 return is_shader(ctx
, name
);
1276 _mesa_LinkProgram(GLhandleARB programObj
)
1278 GET_CURRENT_CONTEXT(ctx
);
1279 link_program(ctx
, programObj
);
1285 * Read shader source code from a file.
1286 * Useful for debugging to override an app's shader.
1289 read_shader(const char *fname
)
1291 const int max
= 50*1000;
1292 FILE *f
= fopen(fname
, "r");
1293 GLcharARB
*buffer
, *shader
;
1300 buffer
= malloc(max
);
1301 len
= fread(buffer
, 1, max
, f
);
1306 shader
= _mesa_strdup(buffer
);
1314 * Called via glShaderSource() and glShaderSourceARB() API functions.
1315 * Basically, concatenate the source code strings into one long string
1316 * and pass it to _mesa_shader_source().
1319 _mesa_ShaderSource(GLhandleARB shaderObj
, GLsizei count
,
1320 const GLcharARB
* const * string
, const GLint
* length
)
1322 GET_CURRENT_CONTEXT(ctx
);
1324 GLsizei i
, totalLength
;
1328 if (!shaderObj
|| string
== NULL
) {
1329 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1334 * This array holds offsets of where the appropriate string ends, thus the
1335 * last element will be set to the total length of the source code.
1337 offsets
= malloc(count
* sizeof(GLint
));
1338 if (offsets
== NULL
) {
1339 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1343 for (i
= 0; i
< count
; i
++) {
1344 if (string
[i
] == NULL
) {
1345 free((GLvoid
*) offsets
);
1346 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1347 "glShaderSourceARB(null string)");
1350 if (length
== NULL
|| length
[i
] < 0)
1351 offsets
[i
] = strlen(string
[i
]);
1353 offsets
[i
] = length
[i
];
1354 /* accumulate string lengths */
1356 offsets
[i
] += offsets
[i
- 1];
1359 /* Total length of source string is sum off all strings plus two.
1360 * One extra byte for terminating zero, another extra byte to silence
1361 * valgrind warnings in the parser/grammer code.
1363 totalLength
= offsets
[count
- 1] + 2;
1364 source
= malloc(totalLength
* sizeof(GLcharARB
));
1365 if (source
== NULL
) {
1366 free((GLvoid
*) offsets
);
1367 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1371 for (i
= 0; i
< count
; i
++) {
1372 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1373 memcpy(source
+ start
, string
[i
],
1374 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1376 source
[totalLength
- 1] = '\0';
1377 source
[totalLength
- 2] = '\0';
1380 /* Compute the shader's source code checksum then try to open a file
1381 * named newshader_<CHECKSUM>. If it exists, use it in place of the
1382 * original shader source code. For debugging.
1385 GLcharARB
*newSource
;
1387 checksum
= _mesa_str_checksum(source
);
1389 _mesa_snprintf(filename
, sizeof(filename
), "newshader_%d", checksum
);
1391 newSource
= read_shader(filename
);
1393 fprintf(stderr
, "Mesa: Replacing shader %u chksum=%d with %s\n",
1394 shaderObj
, checksum
, filename
);
1400 shader_source(ctx
, shaderObj
, source
);
1403 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shaderObj
);
1405 sh
->SourceChecksum
= checksum
; /* save original checksum */
1413 _mesa_UseProgram(GLhandleARB program
)
1415 GET_CURRENT_CONTEXT(ctx
);
1416 struct gl_shader_program
*shProg
;
1418 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1419 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1420 "glUseProgram(transform feedback active)");
1425 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1429 if (!shProg
->LinkStatus
) {
1430 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1431 "glUseProgram(program %u not linked)", program
);
1436 if (ctx
->Shader
.Flags
& GLSL_USE_PROG
) {
1437 print_shader_info(shProg
);
1444 _mesa_use_program(ctx
, shProg
);
1449 _mesa_ValidateProgram(GLhandleARB program
)
1451 GET_CURRENT_CONTEXT(ctx
);
1452 validate_program(ctx
, program
);
1457 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1460 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1461 GLint
* range
, GLint
* precision
)
1463 const struct gl_program_constants
*limits
;
1464 const struct gl_precision
*p
;
1465 GET_CURRENT_CONTEXT(ctx
);
1467 switch (shadertype
) {
1468 case GL_VERTEX_SHADER
:
1469 limits
= &ctx
->Const
.VertexProgram
;
1471 case GL_FRAGMENT_SHADER
:
1472 limits
= &ctx
->Const
.FragmentProgram
;
1475 _mesa_error(ctx
, GL_INVALID_ENUM
,
1476 "glGetShaderPrecisionFormat(shadertype)");
1480 switch (precisiontype
) {
1482 p
= &limits
->LowFloat
;
1484 case GL_MEDIUM_FLOAT
:
1485 p
= &limits
->MediumFloat
;
1488 p
= &limits
->HighFloat
;
1491 p
= &limits
->LowInt
;
1494 p
= &limits
->MediumInt
;
1497 p
= &limits
->HighInt
;
1500 _mesa_error(ctx
, GL_INVALID_ENUM
,
1501 "glGetShaderPrecisionFormat(precisiontype)");
1505 range
[0] = p
->RangeMin
;
1506 range
[1] = p
->RangeMax
;
1507 precision
[0] = p
->Precision
;
1512 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1515 _mesa_ReleaseShaderCompiler(void)
1517 _mesa_destroy_shader_compiler_caches();
1522 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1525 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1526 const void* binary
, GLint length
)
1528 GET_CURRENT_CONTEXT(ctx
);
1531 (void) binaryformat
;
1534 _mesa_error(ctx
, GL_INVALID_OPERATION
, __FUNCTION__
);
1539 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1540 GLenum
*binaryFormat
, GLvoid
*binary
)
1542 struct gl_shader_program
*shProg
;
1543 GET_CURRENT_CONTEXT(ctx
);
1545 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1549 if (!shProg
->LinkStatus
) {
1550 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1551 "glGetProgramBinary(program %u not linked)",
1557 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1561 /* The ARB_get_program_binary spec says:
1563 * "If <length> is NULL, then no length is returned."
1568 (void) binaryFormat
;
1573 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1574 const GLvoid
*binary
, GLsizei length
)
1576 struct gl_shader_program
*shProg
;
1577 GET_CURRENT_CONTEXT(ctx
);
1579 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1583 (void) binaryFormat
;
1586 _mesa_error(ctx
, GL_INVALID_OPERATION
, __FUNCTION__
);
1591 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1593 struct gl_shader_program
*shProg
;
1594 GET_CURRENT_CONTEXT(ctx
);
1596 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1597 "glProgramParameteri");
1602 case GL_GEOMETRY_VERTICES_OUT_ARB
:
1603 if (!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_geometry_shader4
)
1607 (unsigned) value
> ctx
->Const
.MaxGeometryOutputVertices
) {
1608 _mesa_error(ctx
, GL_INVALID_VALUE
,
1609 "glProgramParameteri(GL_GEOMETRY_VERTICES_OUT_ARB=%d",
1613 shProg
->Geom
.VerticesOut
= value
;
1615 case GL_GEOMETRY_INPUT_TYPE_ARB
:
1616 if (!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_geometry_shader4
)
1622 case GL_LINES_ADJACENCY_ARB
:
1624 case GL_TRIANGLES_ADJACENCY_ARB
:
1625 shProg
->Geom
.InputType
= value
;
1628 _mesa_error(ctx
, GL_INVALID_VALUE
,
1629 "glProgramParameteri(geometry input type = %s",
1630 _mesa_lookup_enum_by_nr(value
));
1634 case GL_GEOMETRY_OUTPUT_TYPE_ARB
:
1635 if (!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_geometry_shader4
)
1641 case GL_TRIANGLE_STRIP
:
1642 shProg
->Geom
.OutputType
= value
;
1645 _mesa_error(ctx
, GL_INVALID_VALUE
,
1646 "glProgramParameteri(geometry output type = %s",
1647 _mesa_lookup_enum_by_nr(value
));
1651 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1652 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
1653 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
1654 * even be in the dispatch table, so we shouldn't need to expclicitly
1657 * On desktop, we ignore the 3.0+ requirement because it is silly.
1660 /* The ARB_get_program_binary extension spec says:
1662 * "An INVALID_VALUE error is generated if the <value> argument to
1663 * ProgramParameteri is not TRUE or FALSE."
1665 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
1666 _mesa_error(ctx
, GL_INVALID_VALUE
,
1667 "glProgramParameteri(pname=%s, value=%d): "
1668 "value must be 0 or 1.",
1669 _mesa_lookup_enum_by_nr(pname
),
1674 /* No need to notify the driver. Any changes will actually take effect
1675 * the next time the shader is linked.
1677 * The ARB_get_program_binary extension spec says:
1679 * "To indicate that a program binary is likely to be retrieved,
1680 * ProgramParameteri should be called with <pname>
1681 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
1682 * will not be in effect until the next time LinkProgram or
1683 * ProgramBinary has been called successfully."
1685 * The resloution of issue 9 in the extension spec also says:
1687 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
1688 * to indicate to the GL implementation that this program will
1689 * likely be saved with GetProgramBinary at some point. This will
1690 * give the GL implementation the opportunity to track any state
1691 * changes made to the program before being saved such that when it
1692 * is loaded again a recompile can be avoided."
1694 shProg
->BinaryRetreivableHint
= value
;
1700 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
1701 _mesa_lookup_enum_by_nr(pname
));
1705 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
1706 struct gl_shader_program
*shProg
)
1708 use_shader_program(ctx
, type
, shProg
);
1710 if (ctx
->Driver
.UseProgram
)
1711 ctx
->Driver
.UseProgram(ctx
, shProg
);
1716 * For GL_EXT_separate_shader_objects
1719 _mesa_UseShaderProgramEXT(GLenum type
, GLuint program
)
1721 GET_CURRENT_CONTEXT(ctx
);
1722 struct gl_shader_program
*shProg
= NULL
;
1724 if (!validate_shader_target(ctx
, type
)) {
1725 _mesa_error(ctx
, GL_INVALID_ENUM
, "glUseShaderProgramEXT(type)");
1729 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1730 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1731 "glUseShaderProgramEXT(transform feedback is active)");
1736 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1737 "glUseShaderProgramEXT");
1741 if (!shProg
->LinkStatus
) {
1742 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1743 "glUseShaderProgramEXT(program not linked)");
1748 _mesa_use_shader_program(ctx
, type
, shProg
);
1753 * For GL_EXT_separate_shader_objects
1756 _mesa_ActiveProgramEXT(GLuint program
)
1758 GET_CURRENT_CONTEXT(ctx
);
1759 struct gl_shader_program
*shProg
= (program
!= 0)
1760 ? _mesa_lookup_shader_program_err(ctx
, program
, "glActiveProgramEXT")
1763 _mesa_active_program(ctx
, shProg
, "glActiveProgramEXT");
1769 * For GL_EXT_separate_shader_objects
1772 _mesa_CreateShaderProgramEXT(GLenum type
, const GLchar
*string
)
1774 GET_CURRENT_CONTEXT(ctx
);
1775 const GLuint shader
= create_shader(ctx
, type
);
1779 shader_source(ctx
, shader
, _mesa_strdup(string
));
1780 compile_shader(ctx
, shader
);
1782 program
= create_shader_program(ctx
);
1784 struct gl_shader_program
*shProg
;
1785 struct gl_shader
*sh
;
1786 GLint compiled
= GL_FALSE
;
1788 shProg
= _mesa_lookup_shader_program(ctx
, program
);
1789 sh
= _mesa_lookup_shader(ctx
, shader
);
1791 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
1793 attach_shader(ctx
, program
, shader
);
1794 link_program(ctx
, program
);
1795 detach_shader(ctx
, program
, shader
);
1799 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
1800 append
-error
-to
-info
-log
;
1801 shProg
->LinkStatus
= GL_FALSE
;
1806 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
1809 delete_shader(ctx
, shader
);