2 * Mesa 3-D graphics library
5 * Copyright (C) 2004-2008 Brian Paul 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 * BRIAN PAUL 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.
27 * Implementation of GLSL-related API functions
33 * 1. Check that the right error code is generated for all _mesa_error() calls.
34 * 2. Insert FLUSH_VERTICES calls in various places
38 #include "main/glheader.h"
39 #include "main/context.h"
40 #include "main/hash.h"
41 #include "main/macros.h"
43 #include "prog_parameter.h"
44 #include "prog_print.h"
45 #include "prog_statevars.h"
46 #include "prog_uniform.h"
47 #include "shader/shader_api.h"
48 #include "shader/slang/slang_compile.h"
49 #include "shader/slang/slang_link.h"
53 #ifndef GL_PROGRAM_BINARY_LENGTH_OES
54 #define GL_PROGRAM_BINARY_LENGTH_OES 0x8741
59 * Allocate a new gl_shader_program object, initialize it.
61 static struct gl_shader_program
*
62 _mesa_new_shader_program(GLcontext
*ctx
, GLuint name
)
64 struct gl_shader_program
*shProg
;
65 shProg
= CALLOC_STRUCT(gl_shader_program
);
67 shProg
->Type
= GL_SHADER_PROGRAM_MESA
;
70 shProg
->Attributes
= _mesa_new_parameter_list();
77 * Clear (free) the shader program state that gets produced by linking.
80 _mesa_clear_shader_program_data(GLcontext
*ctx
,
81 struct gl_shader_program
*shProg
)
83 _mesa_reference_vertprog(ctx
, &shProg
->VertexProgram
, NULL
);
84 _mesa_reference_fragprog(ctx
, &shProg
->FragmentProgram
, NULL
);
86 if (shProg
->Uniforms
) {
87 _mesa_free_uniform_list(shProg
->Uniforms
);
88 shProg
->Uniforms
= NULL
;
91 if (shProg
->Varying
) {
92 _mesa_free_parameter_list(shProg
->Varying
);
93 shProg
->Varying
= NULL
;
99 * Free all the data that hangs off a shader program object, but not the
103 _mesa_free_shader_program_data(GLcontext
*ctx
,
104 struct gl_shader_program
*shProg
)
108 assert(shProg
->Type
== GL_SHADER_PROGRAM_MESA
);
110 _mesa_clear_shader_program_data(ctx
, shProg
);
112 if (shProg
->Attributes
) {
113 _mesa_free_parameter_list(shProg
->Attributes
);
114 shProg
->Attributes
= NULL
;
118 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
119 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
121 shProg
->NumShaders
= 0;
123 if (shProg
->Shaders
) {
124 _mesa_free(shProg
->Shaders
);
125 shProg
->Shaders
= NULL
;
128 if (shProg
->InfoLog
) {
129 _mesa_free(shProg
->InfoLog
);
130 shProg
->InfoLog
= NULL
;
136 * Free/delete a shader program object.
139 _mesa_free_shader_program(GLcontext
*ctx
, struct gl_shader_program
*shProg
)
141 _mesa_free_shader_program_data(ctx
, shProg
);
148 * Set ptr to point to shProg.
149 * If ptr is pointing to another object, decrement its refcount (and delete
150 * if refcount hits zero).
151 * Then set ptr to point to shProg, incrementing its refcount.
153 /* XXX this could be static */
155 _mesa_reference_shader_program(GLcontext
*ctx
,
156 struct gl_shader_program
**ptr
,
157 struct gl_shader_program
*shProg
)
160 if (*ptr
== shProg
) {
165 /* Unreference the old shader program */
166 GLboolean deleteFlag
= GL_FALSE
;
167 struct gl_shader_program
*old
= *ptr
;
169 ASSERT(old
->RefCount
> 0);
172 printf("ShaderProgram %p ID=%u RefCount-- to %d\n",
173 (void *) old
, old
->Name
, old
->RefCount
);
175 deleteFlag
= (old
->RefCount
== 0);
178 _mesa_HashRemove(ctx
->Shared
->ShaderObjects
, old
->Name
);
179 _mesa_free_shader_program(ctx
, old
);
189 printf("ShaderProgram %p ID=%u RefCount++ to %d\n",
190 (void *) shProg
, shProg
->Name
, shProg
->RefCount
);
198 * Lookup a GLSL program object.
200 struct gl_shader_program
*
201 _mesa_lookup_shader_program(GLcontext
*ctx
, GLuint name
)
203 struct gl_shader_program
*shProg
;
205 shProg
= (struct gl_shader_program
*)
206 _mesa_HashLookup(ctx
->Shared
->ShaderObjects
, name
);
207 /* Note that both gl_shader and gl_shader_program objects are kept
208 * in the same hash table. Check the object's type to be sure it's
209 * what we're expecting.
211 if (shProg
&& shProg
->Type
!= GL_SHADER_PROGRAM_MESA
) {
221 * As above, but record an error if program is not found.
223 static struct gl_shader_program
*
224 _mesa_lookup_shader_program_err(GLcontext
*ctx
, GLuint name
,
228 _mesa_error(ctx
, GL_INVALID_VALUE
, caller
);
232 struct gl_shader_program
*shProg
= (struct gl_shader_program
*)
233 _mesa_HashLookup(ctx
->Shared
->ShaderObjects
, name
);
235 _mesa_error(ctx
, GL_INVALID_VALUE
, caller
);
238 if (shProg
->Type
!= GL_SHADER_PROGRAM_MESA
) {
239 _mesa_error(ctx
, GL_INVALID_OPERATION
, caller
);
250 * Allocate a new gl_shader object, initialize it.
253 _mesa_new_shader(GLcontext
*ctx
, GLuint name
, GLenum type
)
255 struct gl_shader
*shader
;
256 assert(type
== GL_FRAGMENT_SHADER
|| type
== GL_VERTEX_SHADER
);
257 shader
= CALLOC_STRUCT(gl_shader
);
261 shader
->RefCount
= 1;
268 _mesa_free_shader(GLcontext
*ctx
, struct gl_shader
*sh
)
271 _mesa_free((void *) sh
->Source
);
273 _mesa_free(sh
->InfoLog
);
274 _mesa_reference_program(ctx
, &sh
->Program
, NULL
);
280 * Set ptr to point to sh.
281 * If ptr is pointing to another shader, decrement its refcount (and delete
282 * if refcount hits zero).
283 * Then set ptr to point to sh, incrementing its refcount.
285 /* XXX this could be static */
287 _mesa_reference_shader(GLcontext
*ctx
, struct gl_shader
**ptr
,
288 struct gl_shader
*sh
)
296 /* Unreference the old shader */
297 GLboolean deleteFlag
= GL_FALSE
;
298 struct gl_shader
*old
= *ptr
;
300 ASSERT(old
->RefCount
> 0);
302 /*printf("SHADER DECR %p (%d) to %d\n",
303 (void*) old, old->Name, old->RefCount);*/
304 deleteFlag
= (old
->RefCount
== 0);
307 _mesa_HashRemove(ctx
->Shared
->ShaderObjects
, old
->Name
);
308 _mesa_free_shader(ctx
, old
);
318 /*printf("SHADER INCR %p (%d) to %d\n",
319 (void*) sh, sh->Name, sh->RefCount);*/
326 * Lookup a GLSL shader object.
329 _mesa_lookup_shader(GLcontext
*ctx
, GLuint name
)
332 struct gl_shader
*sh
= (struct gl_shader
*)
333 _mesa_HashLookup(ctx
->Shared
->ShaderObjects
, name
);
334 /* Note that both gl_shader and gl_shader_program objects are kept
335 * in the same hash table. Check the object's type to be sure it's
336 * what we're expecting.
338 if (sh
&& sh
->Type
== GL_SHADER_PROGRAM_MESA
) {
348 * As above, but record an error if shader is not found.
350 static struct gl_shader
*
351 _mesa_lookup_shader_err(GLcontext
*ctx
, GLuint name
, const char *caller
)
354 _mesa_error(ctx
, GL_INVALID_VALUE
, caller
);
358 struct gl_shader
*sh
= (struct gl_shader
*)
359 _mesa_HashLookup(ctx
->Shared
->ShaderObjects
, name
);
361 _mesa_error(ctx
, GL_INVALID_VALUE
, caller
);
364 if (sh
->Type
== GL_SHADER_PROGRAM_MESA
) {
365 _mesa_error(ctx
, GL_INVALID_OPERATION
, caller
);
375 * Initialize context's shader state.
378 _mesa_init_shader_state(GLcontext
* ctx
)
380 /* Device drivers may override these to control what kind of instructions
381 * are generated by the GLSL compiler.
383 ctx
->Shader
.EmitHighLevelInstructions
= GL_TRUE
;
384 ctx
->Shader
.EmitCondCodes
= GL_FALSE
;/*GL_TRUE;*/ /* XXX probably want GL_FALSE... */
385 ctx
->Shader
.EmitComments
= GL_FALSE
;
390 * Free the per-context shader-related state.
393 _mesa_free_shader_state(GLcontext
*ctx
)
395 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
, NULL
);
400 * Copy string from <src> to <dst>, up to maxLength characters, returning
401 * length of <dst> in <length>.
402 * \param src the strings source
403 * \param maxLength max chars to copy
404 * \param length returns number of chars copied
405 * \param dst the string destination
408 copy_string(GLchar
*dst
, GLsizei maxLength
, GLsizei
*length
, const GLchar
*src
)
411 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
421 _mesa_is_program(GLcontext
*ctx
, GLuint name
)
423 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
424 return shProg
? GL_TRUE
: GL_FALSE
;
429 _mesa_is_shader(GLcontext
*ctx
, GLuint name
)
431 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
432 return shader
? GL_TRUE
: GL_FALSE
;
437 * Called via ctx->Driver.AttachShader()
440 _mesa_attach_shader(GLcontext
*ctx
, GLuint program
, GLuint shader
)
442 struct gl_shader_program
*shProg
;
443 struct gl_shader
*sh
;
446 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
450 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
455 n
= shProg
->NumShaders
;
456 for (i
= 0; i
< n
; i
++) {
457 if (shProg
->Shaders
[i
] == sh
) {
458 /* already attached */
464 shProg
->Shaders
= (struct gl_shader
**)
465 _mesa_realloc(shProg
->Shaders
,
466 n
* sizeof(struct gl_shader
*),
467 (n
+ 1) * sizeof(struct gl_shader
*));
468 if (!shProg
->Shaders
) {
469 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
474 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
475 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
476 shProg
->NumShaders
++;
481 _mesa_get_attrib_location(GLcontext
*ctx
, GLuint program
,
484 struct gl_shader_program
*shProg
485 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttribLocation");
491 if (!shProg
->LinkStatus
) {
492 _mesa_error(ctx
, GL_INVALID_OPERATION
,
493 "glGetAttribLocation(program not linked)");
500 if (shProg
->VertexProgram
) {
501 const struct gl_program_parameter_list
*attribs
=
502 shProg
->VertexProgram
->Base
.Attributes
;
504 GLint i
= _mesa_lookup_parameter_index(attribs
, -1, name
);
506 return attribs
->Parameters
[i
].StateIndexes
[0];
515 _mesa_bind_attrib_location(GLcontext
*ctx
, GLuint program
, GLuint index
,
518 struct gl_shader_program
*shProg
;
519 const GLint size
= -1; /* unknown size */
521 GLenum datatype
= GL_FLOAT_VEC4
;
523 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
524 "glBindAttribLocation");
532 if (strncmp(name
, "gl_", 3) == 0) {
533 _mesa_error(ctx
, GL_INVALID_OPERATION
,
534 "glBindAttribLocation(illegal name)");
538 if (index
>= ctx
->Const
.VertexProgram
.MaxAttribs
) {
539 _mesa_error(ctx
, GL_INVALID_VALUE
, "glBindAttribLocation(index)");
543 /* this will replace the current value if it's already in the list */
544 i
= _mesa_add_attribute(shProg
->Attributes
, name
, size
, datatype
, index
);
546 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glBindAttribLocation");
551 * Note that this attribute binding won't go into effect until
552 * glLinkProgram is called again.
558 _mesa_create_shader(GLcontext
*ctx
, GLenum type
)
560 struct gl_shader
*sh
;
563 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
566 case GL_FRAGMENT_SHADER
:
567 case GL_VERTEX_SHADER
:
568 sh
= _mesa_new_shader(ctx
, name
, type
);
571 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(type)");
575 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, sh
);
582 _mesa_create_program(GLcontext
*ctx
)
585 struct gl_shader_program
*shProg
;
587 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
588 shProg
= _mesa_new_shader_program(ctx
, name
);
590 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, shProg
);
592 assert(shProg
->RefCount
== 1);
599 * Named w/ "2" to indicate OpenGL 2.x vs GL_ARB_fragment_programs's
603 _mesa_delete_program2(GLcontext
*ctx
, GLuint name
)
606 * NOTE: deleting shaders/programs works a bit differently than
607 * texture objects (and buffer objects, etc). Shader/program
608 * handles/IDs exist in the hash table until the object is really
609 * deleted (refcount==0). With texture objects, the handle/ID is
610 * removed from the hash table in glDeleteTextures() while the tex
611 * object itself might linger until its refcount goes to zero.
613 struct gl_shader_program
*shProg
;
615 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
619 shProg
->DeletePending
= GL_TRUE
;
621 /* effectively, decr shProg's refcount */
622 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
627 _mesa_delete_shader(GLcontext
*ctx
, GLuint shader
)
629 struct gl_shader
*sh
;
631 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
635 sh
->DeletePending
= GL_TRUE
;
637 /* effectively, decr sh's refcount */
638 _mesa_reference_shader(ctx
, &sh
, NULL
);
643 _mesa_detach_shader(GLcontext
*ctx
, GLuint program
, GLuint shader
)
645 struct gl_shader_program
*shProg
;
649 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
653 n
= shProg
->NumShaders
;
655 for (i
= 0; i
< n
; i
++) {
656 if (shProg
->Shaders
[i
]->Name
== shader
) {
658 struct gl_shader
**newList
;
661 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
663 /* alloc new, smaller array */
664 newList
= (struct gl_shader
**)
665 _mesa_malloc((n
- 1) * sizeof(struct gl_shader
*));
667 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
670 for (j
= 0; j
< i
; j
++) {
671 newList
[j
] = shProg
->Shaders
[j
];
674 newList
[j
++] = shProg
->Shaders
[i
];
675 _mesa_free(shProg
->Shaders
);
677 shProg
->Shaders
= newList
;
678 shProg
->NumShaders
= n
- 1;
683 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
684 assert(shProg
->Shaders
[j
]->Type
== GL_VERTEX_SHADER
||
685 shProg
->Shaders
[j
]->Type
== GL_FRAGMENT_SHADER
);
686 assert(shProg
->Shaders
[j
]->RefCount
> 0);
698 if (_mesa_is_shader(ctx
, shader
))
699 err
= GL_INVALID_OPERATION
;
700 else if (_mesa_is_program(ctx
, shader
))
701 err
= GL_INVALID_OPERATION
;
703 err
= GL_INVALID_VALUE
;
704 _mesa_error(ctx
, err
, "glDetachProgram(shader)");
711 sizeof_glsl_type(GLenum type
)
720 case GL_SAMPLER_CUBE
:
721 case GL_SAMPLER_1D_SHADOW
:
722 case GL_SAMPLER_2D_SHADOW
:
723 case GL_SAMPLER_2D_RECT_ARB
:
724 case GL_SAMPLER_2D_RECT_SHADOW_ARB
:
725 case GL_SAMPLER_1D_ARRAY_SHADOW_EXT
:
726 case GL_SAMPLER_2D_ARRAY_SHADOW_EXT
:
727 case GL_SAMPLER_CUBE_SHADOW_EXT
:
742 case GL_FLOAT_MAT2x3
:
743 case GL_FLOAT_MAT2x4
:
744 return 8; /* two float[4] vectors */
746 case GL_FLOAT_MAT3x2
:
747 case GL_FLOAT_MAT3x4
:
748 return 12; /* three float[4] vectors */
750 case GL_FLOAT_MAT4x2
:
751 case GL_FLOAT_MAT4x3
:
752 return 16; /* four float[4] vectors */
754 _mesa_problem(NULL
, "Invalid type in sizeof_glsl_type()");
761 is_boolean_type(GLenum type
)
776 is_integer_type(GLenum type
)
791 _mesa_get_active_attrib(GLcontext
*ctx
, GLuint program
, GLuint index
,
792 GLsizei maxLength
, GLsizei
*length
, GLint
*size
,
793 GLenum
*type
, GLchar
*nameOut
)
795 const struct gl_program_parameter_list
*attribs
= NULL
;
796 struct gl_shader_program
*shProg
;
798 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetActiveAttrib");
802 if (shProg
->VertexProgram
)
803 attribs
= shProg
->VertexProgram
->Base
.Attributes
;
805 if (!attribs
|| index
>= attribs
->NumParameters
) {
806 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetActiveAttrib(index)");
810 copy_string(nameOut
, maxLength
, length
, attribs
->Parameters
[index
].Name
);
813 *size
= attribs
->Parameters
[index
].Size
814 / sizeof_glsl_type(attribs
->Parameters
[index
].DataType
);
817 *type
= attribs
->Parameters
[index
].DataType
;
821 static struct gl_program_parameter
*
822 get_uniform_parameter(const struct gl_shader_program
*shProg
, GLuint index
)
824 const struct gl_program
*prog
;
827 progPos
= shProg
->Uniforms
->Uniforms
[index
].VertPos
;
829 prog
= &shProg
->VertexProgram
->Base
;
832 progPos
= shProg
->Uniforms
->Uniforms
[index
].FragPos
;
834 prog
= &shProg
->FragmentProgram
->Base
;
838 if (!prog
|| progPos
< 0)
839 return NULL
; /* should never happen */
841 return &prog
->Parameters
->Parameters
[progPos
];
846 * Called via ctx->Driver.GetActiveUniform().
849 _mesa_get_active_uniform(GLcontext
*ctx
, GLuint program
, GLuint index
,
850 GLsizei maxLength
, GLsizei
*length
, GLint
*size
,
851 GLenum
*type
, GLchar
*nameOut
)
853 const struct gl_shader_program
*shProg
;
854 const struct gl_program
*prog
;
857 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetActiveUniform");
861 if (!shProg
->Uniforms
|| index
>= shProg
->Uniforms
->NumUniforms
) {
862 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetActiveUniform(index)");
866 progPos
= shProg
->Uniforms
->Uniforms
[index
].VertPos
;
868 prog
= &shProg
->VertexProgram
->Base
;
871 progPos
= shProg
->Uniforms
->Uniforms
[index
].FragPos
;
873 prog
= &shProg
->FragmentProgram
->Base
;
877 if (!prog
|| progPos
< 0)
878 return; /* should never happen */
881 copy_string(nameOut
, maxLength
, length
,
882 prog
->Parameters
->Parameters
[progPos
].Name
);
884 *size
= prog
->Parameters
->Parameters
[progPos
].Size
885 / sizeof_glsl_type(prog
->Parameters
->Parameters
[progPos
].DataType
);
887 *type
= prog
->Parameters
->Parameters
[progPos
].DataType
;
892 * Called via ctx->Driver.GetAttachedShaders().
895 _mesa_get_attached_shaders(GLcontext
*ctx
, GLuint program
, GLsizei maxCount
,
896 GLsizei
*count
, GLuint
*obj
)
898 struct gl_shader_program
*shProg
=
899 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
902 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
903 obj
[i
] = shProg
->Shaders
[i
]->Name
;
912 _mesa_get_handle(GLcontext
*ctx
, GLenum pname
)
915 GET_CURRENT_CONTEXT(ctx
);
918 case GL_PROGRAM_OBJECT_ARB
:
920 struct gl2_program_intf
**pro
= ctx
->Shader
.CurrentProgram
;
923 return (**pro
)._container
._generic
.
924 GetName((struct gl2_generic_intf
**) (pro
));
928 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
936 _mesa_get_programiv(GLcontext
*ctx
, GLuint program
,
937 GLenum pname
, GLint
*params
)
939 const struct gl_program_parameter_list
*attribs
;
940 struct gl_shader_program
*shProg
941 = _mesa_lookup_shader_program(ctx
, program
);
944 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramiv(program)");
948 if (shProg
->VertexProgram
)
949 attribs
= shProg
->VertexProgram
->Base
.Attributes
;
954 case GL_DELETE_STATUS
:
955 *params
= shProg
->DeletePending
;
958 *params
= shProg
->LinkStatus
;
960 case GL_VALIDATE_STATUS
:
961 *params
= shProg
->Validated
;
963 case GL_INFO_LOG_LENGTH
:
964 *params
= shProg
->InfoLog
? strlen(shProg
->InfoLog
) + 1 : 0;
966 case GL_ATTACHED_SHADERS
:
967 *params
= shProg
->NumShaders
;
969 case GL_ACTIVE_ATTRIBUTES
:
970 *params
= attribs
? attribs
->NumParameters
: 0;
972 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
973 *params
= _mesa_longest_parameter_name(attribs
, PROGRAM_INPUT
) + 1;
975 case GL_ACTIVE_UNIFORMS
:
976 *params
= shProg
->Uniforms
? shProg
->Uniforms
->NumUniforms
: 0;
978 case GL_ACTIVE_UNIFORM_MAX_LENGTH
:
979 *params
= _mesa_longest_uniform_name(shProg
->Uniforms
);
981 (*params
)++; /* add one for terminating zero */
983 case GL_PROGRAM_BINARY_LENGTH_OES
:
987 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname)");
994 _mesa_get_shaderiv(GLcontext
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
996 struct gl_shader
*shader
= _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
1003 case GL_SHADER_TYPE
:
1004 *params
= shader
->Type
;
1006 case GL_DELETE_STATUS
:
1007 *params
= shader
->DeletePending
;
1009 case GL_COMPILE_STATUS
:
1010 *params
= shader
->CompileStatus
;
1012 case GL_INFO_LOG_LENGTH
:
1013 *params
= shader
->InfoLog
? strlen(shader
->InfoLog
) + 1 : 0;
1015 case GL_SHADER_SOURCE_LENGTH
:
1016 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
1019 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
1026 _mesa_get_program_info_log(GLcontext
*ctx
, GLuint program
, GLsizei bufSize
,
1027 GLsizei
*length
, GLchar
*infoLog
)
1029 struct gl_shader_program
*shProg
1030 = _mesa_lookup_shader_program(ctx
, program
);
1032 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(program)");
1035 copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
1040 _mesa_get_shader_info_log(GLcontext
*ctx
, GLuint shader
, GLsizei bufSize
,
1041 GLsizei
*length
, GLchar
*infoLog
)
1043 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
1045 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(shader)");
1048 copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
1053 * Called via ctx->Driver.GetShaderSource().
1056 _mesa_get_shader_source(GLcontext
*ctx
, GLuint shader
, GLsizei maxLength
,
1057 GLsizei
*length
, GLchar
*sourceOut
)
1059 struct gl_shader
*sh
;
1060 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
1064 copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
1069 get_matrix_dims(GLenum type
, GLint
*rows
, GLint
*cols
)
1075 case GL_FLOAT_MAT2x3
:
1079 case GL_FLOAT_MAT2x4
:
1087 case GL_FLOAT_MAT3x2
:
1091 case GL_FLOAT_MAT3x4
:
1099 case GL_FLOAT_MAT4x2
:
1103 case GL_FLOAT_MAT4x3
:
1114 * Determine the number of rows and columns occupied by a uniform
1115 * according to its datatype. For non-matrix types (such as GL_FLOAT_VEC4),
1116 * the number of rows = 1 and cols = number of elements in the vector.
1119 get_uniform_rows_cols(const struct gl_program_parameter
*p
,
1120 GLint
*rows
, GLint
*cols
)
1122 get_matrix_dims(p
->DataType
, rows
, cols
);
1123 if (*rows
== 0 && *cols
== 0) {
1124 /* not a matrix type, probably a float or vector */
1130 *rows
= p
->Size
/ 4 + 1;
1131 if (p
->Size
% 4 == 0)
1134 *cols
= p
->Size
% 4;
1140 #define MAX_UNIFORM_ELEMENTS 16
1143 * Helper for GetUniformfv(), GetUniformiv()
1144 * Returns number of elements written to 'params' output.
1147 get_uniformfv(GLcontext
*ctx
, GLuint program
, GLint location
,
1150 struct gl_shader_program
*shProg
1151 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetUniform[if]v");
1153 if (shProg
->Uniforms
&&
1154 location
>= 0 && location
< (GLint
) shProg
->Uniforms
->NumUniforms
) {
1156 const struct gl_program
*prog
= NULL
;
1158 progPos
= shProg
->Uniforms
->Uniforms
[location
].VertPos
;
1160 prog
= &shProg
->VertexProgram
->Base
;
1163 progPos
= shProg
->Uniforms
->Uniforms
[location
].FragPos
;
1165 prog
= &shProg
->FragmentProgram
->Base
;
1171 const struct gl_program_parameter
*p
=
1172 &prog
->Parameters
->Parameters
[progPos
];
1173 GLint rows
, cols
, i
, j
, k
;
1175 /* See uniformiv() below */
1176 assert(p
->Size
<= MAX_UNIFORM_ELEMENTS
);
1178 get_uniform_rows_cols(p
, &rows
, &cols
);
1181 for (i
= 0; i
< rows
; i
++) {
1182 for (j
= 0; j
< cols
; j
++ ) {
1183 params
[k
++] = prog
->Parameters
->ParameterValues
[progPos
+i
][j
];
1191 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetUniformfv(location)");
1199 * Called via ctx->Driver.GetUniformfv().
1202 _mesa_get_uniformfv(GLcontext
*ctx
, GLuint program
, GLint location
,
1205 (void) get_uniformfv(ctx
, program
, location
, params
);
1210 * Called via ctx->Driver.GetUniformiv().
1213 _mesa_get_uniformiv(GLcontext
*ctx
, GLuint program
, GLint location
,
1216 GLfloat fparams
[MAX_UNIFORM_ELEMENTS
];
1217 GLuint n
= get_uniformfv(ctx
, program
, location
, fparams
);
1219 assert(n
<= MAX_UNIFORM_ELEMENTS
);
1220 for (i
= 0; i
< n
; i
++) {
1221 params
[i
] = (GLint
) fparams
[i
];
1227 * The value returned by GetUniformLocation actually encodes two things:
1228 * 1. the index into the prog->Uniforms[] array for the uniform
1229 * 2. an offset in the prog->ParameterValues[] array for specifying array
1230 * elements or structure fields.
1231 * This function merges those two values.
1234 merge_location_offset(GLint
*location
, GLint offset
)
1236 *location
= *location
| (offset
<< 16);
1241 * Seperate the uniform location and parameter offset. See above.
1244 split_location_offset(GLint
*location
, GLint
*offset
)
1246 *offset
= (*location
>> 16);
1247 *location
= *location
& 0xffff;
1252 * Called via ctx->Driver.GetUniformLocation().
1254 * The return value will encode two values, the uniform location and an
1255 * offset (used for arrays, structs).
1258 _mesa_get_uniform_location(GLcontext
*ctx
, GLuint program
, const GLchar
*name
)
1260 GLint offset
= 0, location
= -1;
1262 struct gl_shader_program
*shProg
=
1263 _mesa_lookup_shader_program_err(ctx
, program
, "glGetUniformLocation");
1268 if (shProg
->LinkStatus
== GL_FALSE
) {
1269 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetUniformfv(program)");
1273 /* XXX we should return -1 if the uniform was declared, but not
1277 /* XXX we need to be able to parse uniform names for structs and arrays
1284 /* handle 1-dimension arrays here... */
1285 char *c
= strchr(name
, '[');
1287 /* truncate name at [ */
1288 const GLint len
= c
- name
;
1289 GLchar
*newName
= _mesa_malloc(len
+ 1);
1291 return -1; /* out of mem */
1292 _mesa_memcpy(newName
, name
, len
);
1295 location
= _mesa_lookup_uniform(shProg
->Uniforms
, newName
);
1296 if (location
>= 0) {
1297 const GLint element
= _mesa_atoi(c
+ 1);
1299 /* get type of the uniform array element */
1300 struct gl_program_parameter
*p
;
1301 p
= get_uniform_parameter(shProg
, location
);
1304 get_matrix_dims(p
->DataType
, &rows
, &cols
);
1307 offset
= element
* rows
;
1312 _mesa_free(newName
);
1317 location
= _mesa_lookup_uniform(shProg
->Uniforms
, name
);
1320 if (location
>= 0) {
1321 merge_location_offset(&location
, offset
);
1330 * Called via ctx->Driver.ShaderSource()
1333 _mesa_shader_source(GLcontext
*ctx
, GLuint shader
, const GLchar
*source
)
1335 struct gl_shader
*sh
;
1337 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glShaderSource");
1341 /* free old shader source string and install new one */
1343 _mesa_free((void *) sh
->Source
);
1345 sh
->Source
= source
;
1346 sh
->CompileStatus
= GL_FALSE
;
1351 * Called via ctx->Driver.CompileShader()
1354 _mesa_compile_shader(GLcontext
*ctx
, GLuint shaderObj
)
1356 struct gl_shader
*sh
;
1358 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glCompileShader");
1362 sh
->CompileStatus
= _slang_compile(ctx
, sh
);
1367 * Called via ctx->Driver.LinkProgram()
1370 _mesa_link_program(GLcontext
*ctx
, GLuint program
)
1372 struct gl_shader_program
*shProg
;
1374 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glLinkProgram");
1378 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1380 _slang_link(ctx
, program
, shProg
);
1385 * Called via ctx->Driver.UseProgram()
1388 _mesa_use_program(GLcontext
*ctx
, GLuint program
)
1390 struct gl_shader_program
*shProg
;
1392 if (ctx
->Shader
.CurrentProgram
&&
1393 ctx
->Shader
.CurrentProgram
->Name
== program
) {
1398 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1401 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1405 if (!shProg
->LinkStatus
) {
1406 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUseProgram");
1414 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
, shProg
);
1420 * Update the vertex and fragment program's TexturesUsed arrays.
1423 update_textures_used(struct gl_program
*prog
)
1427 memset(prog
->TexturesUsed
, 0, sizeof(prog
->TexturesUsed
));
1429 for (s
= 0; s
< MAX_SAMPLERS
; s
++) {
1430 if (prog
->SamplersUsed
& (1 << s
)) {
1431 GLuint u
= prog
->SamplerUnits
[s
];
1432 GLuint t
= prog
->SamplerTargets
[s
];
1433 assert(u
< MAX_TEXTURE_IMAGE_UNITS
);
1434 prog
->TexturesUsed
[u
] |= (1 << t
);
1441 is_sampler_type(GLenum type
)
1447 case GL_SAMPLER_CUBE
:
1448 case GL_SAMPLER_1D_SHADOW
:
1449 case GL_SAMPLER_2D_SHADOW
:
1450 case GL_SAMPLER_2D_RECT_ARB
:
1451 case GL_SAMPLER_2D_RECT_SHADOW_ARB
:
1452 case GL_SAMPLER_1D_ARRAY_EXT
:
1453 case GL_SAMPLER_2D_ARRAY_EXT
:
1462 * Check if the type given by userType is allowed to set a uniform of the
1463 * target type. Generally, equivalence is required, but setting Boolean
1464 * uniforms can be done with glUniformiv or glUniformfv.
1467 compatible_types(GLenum userType
, GLenum targetType
)
1469 if (userType
== targetType
)
1472 if (targetType
== GL_BOOL
&& (userType
== GL_FLOAT
|| userType
== GL_INT
))
1475 if (targetType
== GL_BOOL_VEC2
&& (userType
== GL_FLOAT_VEC2
||
1476 userType
== GL_INT_VEC2
))
1479 if (targetType
== GL_BOOL_VEC3
&& (userType
== GL_FLOAT_VEC3
||
1480 userType
== GL_INT_VEC3
))
1483 if (targetType
== GL_BOOL_VEC4
&& (userType
== GL_FLOAT_VEC4
||
1484 userType
== GL_INT_VEC4
))
1487 if (is_sampler_type(targetType
) && userType
== GL_INT
)
1495 * Set the value of a program's uniform variable.
1496 * \param program the program whose uniform to update
1497 * \param index the index of the program parameter for the uniform
1498 * \param offset additional parameter slot offset (for arrays)
1499 * \param type the datatype of the uniform
1500 * \param count the number of uniforms to set
1501 * \param elems number of elements per uniform
1502 * \param values the new values
1505 set_program_uniform(GLcontext
*ctx
, struct gl_program
*program
,
1506 GLint index
, GLint offset
,
1507 GLenum type
, GLsizei count
, GLint elems
,
1510 assert(offset
>= 0);
1512 if (!compatible_types(type
,
1513 program
->Parameters
->Parameters
[index
].DataType
)) {
1514 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUniform(type mismatch)");
1518 if (index
+ offset
> (GLint
) program
->Parameters
->Size
) {
1519 /* out of bounds! */
1523 if (program
->Parameters
->Parameters
[index
].Type
== PROGRAM_SAMPLER
) {
1524 /* This controls which texture unit which is used by a sampler */
1525 GLuint texUnit
, sampler
;
1527 /* data type for setting samplers must be int */
1528 if (type
!= GL_INT
|| count
!= 1) {
1529 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1530 "glUniform(only glUniform1i can be used "
1531 "to set sampler uniforms)");
1535 sampler
= (GLuint
) program
->Parameters
->ParameterValues
[index
][0];
1536 texUnit
= ((GLuint
*) values
)[0];
1538 /* check that the sampler (tex unit index) is legal */
1539 if (texUnit
>= ctx
->Const
.MaxTextureImageUnits
) {
1540 _mesa_error(ctx
, GL_INVALID_VALUE
,
1541 "glUniform1(invalid sampler/tex unit index)");
1545 /* This maps a sampler to a texture unit: */
1546 program
->SamplerUnits
[sampler
] = texUnit
;
1547 update_textures_used(program
);
1549 FLUSH_VERTICES(ctx
, _NEW_TEXTURE
);
1552 /* ordinary uniform variable */
1554 GLint slots
= (program
->Parameters
->Parameters
[index
].Size
+ 3) / 4;
1556 if (count
* elems
> (GLint
) program
->Parameters
->Parameters
[index
].Size
) {
1557 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUniform(count too large)");
1564 for (k
= 0; k
< count
; k
++) {
1565 GLfloat
*uniformVal
= program
->Parameters
->ParameterValues
[index
+ offset
+ k
];
1566 if (is_integer_type(type
)) {
1567 const GLint
*iValues
= ((const GLint
*) values
) + k
* elems
;
1568 for (i
= 0; i
< elems
; i
++) {
1569 uniformVal
[i
] = (GLfloat
) iValues
[i
];
1573 const GLfloat
*fValues
= ((const GLfloat
*) values
) + k
* elems
;
1574 for (i
= 0; i
< elems
; i
++) {
1575 uniformVal
[i
] = fValues
[i
];
1579 /* if the uniform is bool-valued, convert to 1.0 or 0.0 */
1580 if (is_boolean_type(program
->Parameters
->Parameters
[index
].DataType
)) {
1581 for (i
= 0; i
< elems
; i
++) {
1582 uniformVal
[i
] = uniformVal
[i
] ? 1.0f
: 0.0f
;
1591 * Called via ctx->Driver.Uniform().
1594 _mesa_uniform(GLcontext
*ctx
, GLint location
, GLsizei count
,
1595 const GLvoid
*values
, GLenum type
)
1597 struct gl_shader_program
*shProg
= ctx
->Shader
.CurrentProgram
;
1598 GLint elems
, offset
;
1600 if (!shProg
|| !shProg
->LinkStatus
) {
1601 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glUniform(program not linked)");
1606 return; /* The standard specifies this as a no-op */
1608 split_location_offset(&location
, &offset
);
1610 if (location
< 0 || location
>= (GLint
) shProg
->Uniforms
->NumUniforms
) {
1611 _mesa_error(ctx
, GL_INVALID_VALUE
, "glUniform(location)");
1616 _mesa_error(ctx
, GL_INVALID_VALUE
, "glUniform(count < 0)");
1638 _mesa_problem(ctx
, "Invalid type in _mesa_uniform");
1642 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1644 /* A uniform var may be used by both a vertex shader and a fragment
1645 * shader. We may need to update one or both shader's uniform here:
1647 if (shProg
->VertexProgram
) {
1648 /* convert uniform location to program parameter index */
1649 GLint index
= shProg
->Uniforms
->Uniforms
[location
].VertPos
;
1651 set_program_uniform(ctx
, &shProg
->VertexProgram
->Base
,
1652 index
, offset
, type
, count
, elems
, values
);
1656 if (shProg
->FragmentProgram
) {
1657 /* convert uniform location to program parameter index */
1658 GLint index
= shProg
->Uniforms
->Uniforms
[location
].FragPos
;
1660 set_program_uniform(ctx
, &shProg
->FragmentProgram
->Base
,
1661 index
, offset
, type
, count
, elems
, values
);
1668 * Set a matrix-valued program parameter.
1671 set_program_uniform_matrix(GLcontext
*ctx
, struct gl_program
*program
,
1672 GLuint index
, GLuint offset
,
1673 GLuint count
, GLuint rows
, GLuint cols
,
1674 GLboolean transpose
, const GLfloat
*values
)
1676 GLuint mat
, row
, col
;
1677 GLuint dst
= index
+ offset
, src
= 0;
1680 /* check that the number of rows, columns is correct */
1681 get_matrix_dims(program
->Parameters
->Parameters
[index
].DataType
, &nr
, &nc
);
1682 if (rows
!= nr
|| cols
!= nc
) {
1683 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1684 "glUniformMatrix(matrix size mismatch)");
1688 if (index
+ offset
> program
->Parameters
->Size
) {
1689 /* out of bounds! */
1694 * Note: the _columns_ of a matrix are stored in program registers, not
1695 * the rows. So, the loops below look a little funny.
1696 * XXX could optimize this a bit...
1699 /* loop over matrices */
1700 for (mat
= 0; mat
< count
; mat
++) {
1703 for (col
= 0; col
< cols
; col
++) {
1704 GLfloat
*v
= program
->Parameters
->ParameterValues
[dst
];
1705 for (row
= 0; row
< rows
; row
++) {
1707 v
[row
] = values
[src
+ row
* cols
+ col
];
1710 v
[row
] = values
[src
+ col
* rows
+ row
];
1716 src
+= rows
* cols
; /* next matrix */
1722 * Called by ctx->Driver.UniformMatrix().
1723 * Note: cols=2, rows=4 ==> array[2] of vec4
1726 _mesa_uniform_matrix(GLcontext
*ctx
, GLint cols
, GLint rows
,
1727 GLenum matrixType
, GLint location
, GLsizei count
,
1728 GLboolean transpose
, const GLfloat
*values
)
1731 struct gl_shader_program
*shProg
= ctx
->Shader
.CurrentProgram
;
1733 if (!shProg
|| !shProg
->LinkStatus
) {
1734 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1735 "glUniformMatrix(program not linked)");
1740 return; /* The standard specifies this as a no-op */
1742 split_location_offset(&location
, &offset
);
1744 if (location
< 0 || location
>= (GLint
) shProg
->Uniforms
->NumUniforms
) {
1745 _mesa_error(ctx
, GL_INVALID_VALUE
, "glUniformMatrix(location)");
1748 if (values
== NULL
) {
1749 _mesa_error(ctx
, GL_INVALID_VALUE
, "glUniformMatrix");
1753 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1755 if (shProg
->VertexProgram
) {
1756 /* convert uniform location to program parameter index */
1757 GLint index
= shProg
->Uniforms
->Uniforms
[location
].VertPos
;
1759 set_program_uniform_matrix(ctx
, &shProg
->VertexProgram
->Base
,
1761 count
, rows
, cols
, transpose
, values
);
1765 if (shProg
->FragmentProgram
) {
1766 /* convert uniform location to program parameter index */
1767 GLint index
= shProg
->Uniforms
->Uniforms
[location
].FragPos
;
1769 set_program_uniform_matrix(ctx
, &shProg
->FragmentProgram
->Base
,
1771 count
, rows
, cols
, transpose
, values
);
1778 _mesa_validate_program(GLcontext
*ctx
, GLuint program
)
1780 struct gl_shader_program
*shProg
;
1782 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1787 if (!shProg
->LinkStatus
) {
1788 shProg
->Validated
= GL_FALSE
;
1792 /* From the GL spec, a program is invalid if any of these are true:
1794 any two active samplers in the current program object are of
1795 different types, but refer to the same texture image unit,
1797 any active sampler in the current program object refers to a texture
1798 image unit where fixed-function fragment processing accesses a
1799 texture target that does not match the sampler type, or
1801 the sum of the number of active samplers in the program and the
1802 number of texture image units enabled for fixed-function fragment
1803 processing exceeds the combined limit on the total number of texture
1804 image units allowed.
1807 shProg
->Validated
= GL_TRUE
;
1812 * Plug in Mesa's GLSL functions into the device driver function table.
1815 _mesa_init_glsl_driver_functions(struct dd_function_table
*driver
)
1817 driver
->AttachShader
= _mesa_attach_shader
;
1818 driver
->BindAttribLocation
= _mesa_bind_attrib_location
;
1819 driver
->CompileShader
= _mesa_compile_shader
;
1820 driver
->CreateProgram
= _mesa_create_program
;
1821 driver
->CreateShader
= _mesa_create_shader
;
1822 driver
->DeleteProgram2
= _mesa_delete_program2
;
1823 driver
->DeleteShader
= _mesa_delete_shader
;
1824 driver
->DetachShader
= _mesa_detach_shader
;
1825 driver
->GetActiveAttrib
= _mesa_get_active_attrib
;
1826 driver
->GetActiveUniform
= _mesa_get_active_uniform
;
1827 driver
->GetAttachedShaders
= _mesa_get_attached_shaders
;
1828 driver
->GetAttribLocation
= _mesa_get_attrib_location
;
1829 driver
->GetHandle
= _mesa_get_handle
;
1830 driver
->GetProgramiv
= _mesa_get_programiv
;
1831 driver
->GetProgramInfoLog
= _mesa_get_program_info_log
;
1832 driver
->GetShaderiv
= _mesa_get_shaderiv
;
1833 driver
->GetShaderInfoLog
= _mesa_get_shader_info_log
;
1834 driver
->GetShaderSource
= _mesa_get_shader_source
;
1835 driver
->GetUniformfv
= _mesa_get_uniformfv
;
1836 driver
->GetUniformiv
= _mesa_get_uniformiv
;
1837 driver
->GetUniformLocation
= _mesa_get_uniform_location
;
1838 driver
->IsProgram
= _mesa_is_program
;
1839 driver
->IsShader
= _mesa_is_shader
;
1840 driver
->LinkProgram
= _mesa_link_program
;
1841 driver
->ShaderSource
= _mesa_shader_source
;
1842 driver
->Uniform
= _mesa_uniform
;
1843 driver
->UniformMatrix
= _mesa_uniform_matrix
;
1844 driver
->UseProgram
= _mesa_use_program
;
1845 driver
->ValidateProgram
= _mesa_validate_program
;