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/hash_table.h"
46 #include "main/mtypes.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"
56 #include "../glsl/glsl_parser_extras.h"
57 #include "../glsl/ir.h"
58 #include "../glsl/ir_uniform.h"
59 #include "../glsl/program.h"
61 /** Define this to enable shader substitution (see below) */
62 #define SHADER_SUBST 0
66 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
69 get_shader_flags(void)
71 GLbitfield flags
= 0x0;
72 const char *env
= _mesa_getenv("MESA_GLSL");
75 if (strstr(env
, "dump_on_error"))
76 flags
|= GLSL_DUMP_ON_ERROR
;
77 else if (strstr(env
, "dump"))
79 if (strstr(env
, "log"))
81 if (strstr(env
, "nopvert"))
82 flags
|= GLSL_NOP_VERT
;
83 if (strstr(env
, "nopfrag"))
84 flags
|= GLSL_NOP_FRAG
;
85 if (strstr(env
, "nopt"))
87 else if (strstr(env
, "opt"))
89 if (strstr(env
, "uniform"))
90 flags
|= GLSL_UNIFORMS
;
91 if (strstr(env
, "useprog"))
92 flags
|= GLSL_USE_PROG
;
93 if (strstr(env
, "errors"))
94 flags
|= GLSL_REPORT_ERRORS
;
102 * Initialize context's shader state.
105 _mesa_init_shader_state(struct gl_context
*ctx
)
107 /* Device drivers may override these to control what kind of instructions
108 * are generated by the GLSL compiler.
110 struct gl_shader_compiler_options options
;
113 memset(&options
, 0, sizeof(options
));
114 options
.MaxUnrollIterations
= 32;
115 options
.MaxIfDepth
= UINT_MAX
;
117 /* Default pragma settings */
118 options
.DefaultPragmas
.Optimize
= GL_TRUE
;
120 for (sh
= 0; sh
< MESA_SHADER_STAGES
; ++sh
)
121 memcpy(&ctx
->ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
123 ctx
->Shader
.Flags
= get_shader_flags();
128 * Free the per-context shader-related state.
131 _mesa_free_shader_state(struct gl_context
*ctx
)
133 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[MESA_SHADER_VERTEX
], NULL
);
134 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[MESA_SHADER_GEOMETRY
],
136 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[MESA_SHADER_FRAGMENT
],
138 _mesa_reference_shader_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
,
140 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
145 * Copy string from <src> to <dst>, up to maxLength characters, returning
146 * length of <dst> in <length>.
147 * \param src the strings source
148 * \param maxLength max chars to copy
149 * \param length returns number of chars copied
150 * \param dst the string destination
153 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
154 GLsizei
*length
, const GLchar
*src
)
157 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
168 * Confirm that the a shader type is valid and supported by the implementation
170 * \param ctx Current GL context
171 * \param type Shader target
175 _mesa_validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
177 /* Note: when building built-in GLSL functions, this function may be
178 * invoked with ctx == NULL. In that case, we can only validate that it's
179 * a shader target we recognize, not that it's supported in the current
180 * context. But that's fine--we don't need any further validation than
181 * that when building built-in GLSL functions.
185 case GL_FRAGMENT_SHADER
:
186 return ctx
== NULL
|| ctx
->Extensions
.ARB_fragment_shader
;
187 case GL_VERTEX_SHADER
:
188 return ctx
== NULL
|| ctx
->Extensions
.ARB_vertex_shader
;
189 case GL_GEOMETRY_SHADER_ARB
:
190 return ctx
== NULL
|| _mesa_has_geometry_shaders(ctx
);
198 is_program(struct gl_context
*ctx
, GLuint name
)
200 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
201 return shProg
? GL_TRUE
: GL_FALSE
;
206 is_shader(struct gl_context
*ctx
, GLuint name
)
208 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
209 return shader
? GL_TRUE
: GL_FALSE
;
214 * Attach shader to a shader program.
217 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
219 struct gl_shader_program
*shProg
;
220 struct gl_shader
*sh
;
223 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
225 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
229 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
234 n
= shProg
->NumShaders
;
235 for (i
= 0; i
< n
; i
++) {
236 if (shProg
->Shaders
[i
] == sh
) {
237 /* The shader is already attched to this program. The
238 * GL_ARB_shader_objects spec says:
240 * "The error INVALID_OPERATION is generated by AttachObjectARB
241 * if <obj> is already attached to <containerObj>."
243 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
245 } else if (same_type_disallowed
&&
246 shProg
->Shaders
[i
]->Type
== sh
->Type
) {
247 /* Shader with the same type is already attached to this program,
248 * OpenGL ES 2.0 and 3.0 specs say:
250 * "Multiple shader objects of the same type may not be attached
251 * to a single program object. [...] The error INVALID_OPERATION
252 * is generated if [...] another shader object of the same type
253 * as shader is already attached to program."
255 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
261 shProg
->Shaders
= (struct gl_shader
**)
262 _mesa_realloc(shProg
->Shaders
,
263 n
* sizeof(struct gl_shader
*),
264 (n
+ 1) * sizeof(struct gl_shader
*));
265 if (!shProg
->Shaders
) {
266 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
271 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
272 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
273 shProg
->NumShaders
++;
278 create_shader(struct gl_context
*ctx
, GLenum type
)
280 struct gl_shader
*sh
;
283 if (!_mesa_validate_shader_target(ctx
, type
)) {
284 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(type)");
288 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
289 sh
= ctx
->Driver
.NewShader(ctx
, name
, type
);
290 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, sh
);
297 create_shader_program(struct gl_context
*ctx
)
300 struct gl_shader_program
*shProg
;
302 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
304 shProg
= ctx
->Driver
.NewShaderProgram(ctx
, name
);
306 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, shProg
);
308 assert(shProg
->RefCount
== 1);
315 * Named w/ "2" to indicate OpenGL 2.x vs GL_ARB_fragment_programs's
319 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
322 * NOTE: deleting shaders/programs works a bit differently than
323 * texture objects (and buffer objects, etc). Shader/program
324 * handles/IDs exist in the hash table until the object is really
325 * deleted (refcount==0). With texture objects, the handle/ID is
326 * removed from the hash table in glDeleteTextures() while the tex
327 * object itself might linger until its refcount goes to zero.
329 struct gl_shader_program
*shProg
;
331 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
335 if (!shProg
->DeletePending
) {
336 shProg
->DeletePending
= GL_TRUE
;
338 /* effectively, decr shProg's refcount */
339 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
345 delete_shader(struct gl_context
*ctx
, GLuint shader
)
347 struct gl_shader
*sh
;
349 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
353 if (!sh
->DeletePending
) {
354 sh
->DeletePending
= GL_TRUE
;
356 /* effectively, decr sh's refcount */
357 _mesa_reference_shader(ctx
, &sh
, NULL
);
363 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
365 struct gl_shader_program
*shProg
;
369 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
373 n
= shProg
->NumShaders
;
375 for (i
= 0; i
< n
; i
++) {
376 if (shProg
->Shaders
[i
]->Name
== shader
) {
378 struct gl_shader
**newList
;
381 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
383 /* alloc new, smaller array */
385 malloc((n
- 1) * sizeof(struct gl_shader
*));
387 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
390 for (j
= 0; j
< i
; j
++) {
391 newList
[j
] = shProg
->Shaders
[j
];
394 newList
[j
++] = shProg
->Shaders
[i
];
395 free(shProg
->Shaders
);
397 shProg
->Shaders
= newList
;
398 shProg
->NumShaders
= n
- 1;
403 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
404 assert(shProg
->Shaders
[j
]->Type
== GL_VERTEX_SHADER
||
405 shProg
->Shaders
[j
]->Type
== GL_FRAGMENT_SHADER
);
406 assert(shProg
->Shaders
[j
]->RefCount
> 0);
418 if (is_shader(ctx
, shader
))
419 err
= GL_INVALID_OPERATION
;
420 else if (is_program(ctx
, shader
))
421 err
= GL_INVALID_OPERATION
;
423 err
= GL_INVALID_VALUE
;
424 _mesa_error(ctx
, err
, "glDetachShader(shader)");
431 * Return list of shaders attached to shader program.
434 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
435 GLsizei
*count
, GLuint
*obj
)
437 struct gl_shader_program
*shProg
=
438 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
441 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
442 obj
[i
] = shProg
->Shaders
[i
]->Name
;
451 * glGetHandleARB() - return ID/name of currently bound shader program.
454 get_handle(struct gl_context
*ctx
, GLenum pname
)
456 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
457 if (ctx
->Shader
.ActiveProgram
)
458 return ctx
->Shader
.ActiveProgram
->Name
;
463 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
470 * Check if a geometry shader query is valid at this time. If not, report an
471 * error and return false.
473 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
475 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
476 * are queried for a program which has not been linked successfully, or
477 * which does not contain objects to form a geometry shader, then an
478 * INVALID_OPERATION error is generated."
481 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
483 if (shProg
->LinkStatus
&&
484 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
488 _mesa_error(ctx
, GL_INVALID_OPERATION
,
489 "glGetProgramv(linked geometry shader required)");
495 * glGetProgramiv() - get shader program state.
496 * Note that this is for GLSL shader programs, not ARB vertex/fragment
497 * programs (see glGetProgramivARB).
500 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
, GLint
*params
)
502 struct gl_shader_program
*shProg
503 = _mesa_lookup_shader_program(ctx
, program
);
505 /* Is transform feedback available in this context?
508 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
509 || ctx
->API
== API_OPENGL_CORE
510 || _mesa_is_gles3(ctx
);
512 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
513 * and GL 3.2) are available in this context
515 const bool has_core_gs
= _mesa_is_desktop_gl(ctx
) && ctx
->Version
>= 32;
517 /* Are uniform buffer objects available in this context?
520 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_uniform_buffer_object
)
521 || ctx
->API
== API_OPENGL_CORE
522 || _mesa_is_gles3(ctx
);
525 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramiv(program)");
530 case GL_DELETE_STATUS
:
531 *params
= shProg
->DeletePending
;
534 *params
= shProg
->LinkStatus
;
536 case GL_VALIDATE_STATUS
:
537 *params
= shProg
->Validated
;
539 case GL_INFO_LOG_LENGTH
:
540 *params
= shProg
->InfoLog
? strlen(shProg
->InfoLog
) + 1 : 0;
542 case GL_ATTACHED_SHADERS
:
543 *params
= shProg
->NumShaders
;
545 case GL_ACTIVE_ATTRIBUTES
:
546 *params
= _mesa_count_active_attribs(shProg
);
548 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
549 *params
= _mesa_longest_attribute_name_length(shProg
);
551 case GL_ACTIVE_UNIFORMS
:
552 *params
= shProg
->NumUserUniformStorage
;
554 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
558 for (i
= 0; i
< shProg
->NumUserUniformStorage
; i
++) {
559 /* Add one for the terminating NUL character for a non-array, and
560 * 4 for the "[0]" and the NUL for an array.
562 const GLint len
= strlen(shProg
->UniformStorage
[i
].name
) + 1 +
563 ((shProg
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
572 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
575 *params
= shProg
->TransformFeedback
.NumVarying
;
577 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
583 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
584 /* Add one for the terminating NUL character.
586 const GLint len
= strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
595 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
598 *params
= shProg
->TransformFeedback
.BufferMode
;
600 case GL_GEOMETRY_VERTICES_OUT
:
603 if (check_gs_query(ctx
, shProg
))
604 *params
= shProg
->Geom
.VerticesOut
;
606 case GL_GEOMETRY_INPUT_TYPE
:
609 if (check_gs_query(ctx
, shProg
))
610 *params
= shProg
->Geom
.InputType
;
612 case GL_GEOMETRY_OUTPUT_TYPE
:
615 if (check_gs_query(ctx
, shProg
))
616 *params
= shProg
->Geom
.OutputType
;
618 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
625 for (i
= 0; i
< shProg
->NumUniformBlocks
; i
++) {
626 /* Add one for the terminating NUL character.
628 const GLint len
= strlen(shProg
->UniformBlocks
[i
].Name
) + 1;
637 case GL_ACTIVE_UNIFORM_BLOCKS
:
641 *params
= shProg
->NumUniformBlocks
;
643 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
644 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
645 * only available with desktop OpenGL 3.0+ with the
646 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
648 * On desktop, we ignore the 3.0+ requirement because it is silly.
650 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
653 *params
= shProg
->BinaryRetreivableHint
;
655 case GL_PROGRAM_BINARY_LENGTH
:
658 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
659 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
662 *params
= shProg
->NumAtomicBuffers
;
668 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
669 _mesa_lookup_enum_by_nr(pname
));
674 * glGetShaderiv() - get GLSL shader state
677 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
679 struct gl_shader
*shader
=
680 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
688 *params
= shader
->Type
;
690 case GL_DELETE_STATUS
:
691 *params
= shader
->DeletePending
;
693 case GL_COMPILE_STATUS
:
694 *params
= shader
->CompileStatus
;
696 case GL_INFO_LOG_LENGTH
:
697 *params
= shader
->InfoLog
? strlen(shader
->InfoLog
) + 1 : 0;
699 case GL_SHADER_SOURCE_LENGTH
:
700 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
703 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
710 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
711 GLsizei
*length
, GLchar
*infoLog
)
713 struct gl_shader_program
*shProg
714 = _mesa_lookup_shader_program(ctx
, program
);
716 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(program)");
719 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
724 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
725 GLsizei
*length
, GLchar
*infoLog
)
727 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
729 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(shader)");
732 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
737 * Return shader source code.
740 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
741 GLsizei
*length
, GLchar
*sourceOut
)
743 struct gl_shader
*sh
;
744 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
748 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
753 * Set/replace shader source code. A helper function used by
754 * glShaderSource[ARB] and glCreateShaderProgramEXT.
757 shader_source(struct gl_context
*ctx
, GLuint shader
, const GLchar
*source
)
759 struct gl_shader
*sh
;
761 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glShaderSource");
765 /* free old shader source string and install new one */
766 free((void *)sh
->Source
);
768 sh
->CompileStatus
= GL_FALSE
;
770 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
779 compile_shader(struct gl_context
*ctx
, GLuint shaderObj
)
781 struct gl_shader
*sh
;
782 struct gl_shader_compiler_options
*options
;
784 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glCompileShader");
788 options
= &ctx
->ShaderCompilerOptions
[sh
->Stage
];
790 /* set default pragma state for shader */
791 sh
->Pragmas
= options
->DefaultPragmas
;
794 /* If the user called glCompileShader without first calling
795 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
797 sh
->CompileStatus
= GL_FALSE
;
799 if (ctx
->Shader
.Flags
& GLSL_DUMP
) {
800 printf("GLSL source for %s shader %d:\n",
801 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
802 printf("%s\n", sh
->Source
);
805 /* this call will set the shader->CompileStatus field to indicate if
806 * compilation was successful.
808 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
810 if (ctx
->Shader
.Flags
& GLSL_LOG
) {
811 _mesa_write_shader_to_file(sh
);
814 if (ctx
->Shader
.Flags
& GLSL_DUMP
) {
815 if (sh
->CompileStatus
) {
816 printf("GLSL IR for shader %d:\n", sh
->Name
);
817 _mesa_print_ir(sh
->ir
, NULL
);
820 printf("GLSL shader %d failed to compile.\n", sh
->Name
);
822 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
823 printf("GLSL shader %d info log:\n", sh
->Name
);
824 printf("%s\n", sh
->InfoLog
);
830 if (!sh
->CompileStatus
) {
831 if (ctx
->Shader
.Flags
& GLSL_DUMP_ON_ERROR
) {
832 fprintf(stderr
, "GLSL source for %s shader %d:\n",
833 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
834 fprintf(stderr
, "%s\n", sh
->Source
);
835 fprintf(stderr
, "Info Log:\n%s\n", sh
->InfoLog
);
839 if (ctx
->Shader
.Flags
& GLSL_REPORT_ERRORS
) {
840 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
841 sh
->Name
, sh
->InfoLog
);
848 * Link a program's shaders.
851 link_program(struct gl_context
*ctx
, GLuint program
)
853 struct gl_shader_program
*shProg
;
855 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glLinkProgram");
859 /* From the ARB_transform_feedback2 specification:
860 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
861 * the name of a program being used by one or more transform feedback
862 * objects, even if the objects are not currently bound or are paused."
864 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
865 _mesa_error(ctx
, GL_INVALID_OPERATION
,
866 "glLinkProgram(transform feedback is using the program)");
870 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
872 _mesa_glsl_link_shader(ctx
, shProg
);
874 if (shProg
->LinkStatus
== GL_FALSE
&&
875 (ctx
->Shader
.Flags
& GLSL_REPORT_ERRORS
)) {
876 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
877 shProg
->Name
, shProg
->InfoLog
);
884 printf("Link %u shaders in program %u: %s\n",
885 shProg
->NumShaders
, shProg
->Name
,
886 shProg
->LinkStatus
? "Success" : "Failed");
888 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
889 printf(" shader %u, type 0x%x\n",
890 shProg
->Shaders
[i
]->Name
,
891 shProg
->Shaders
[i
]->Type
);
898 * Print basic shader info (for debug).
901 print_shader_info(const struct gl_shader_program
*shProg
)
905 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
906 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
907 printf(" %s shader %u, checksum %u\n",
908 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
909 shProg
->Shaders
[i
]->Name
,
910 shProg
->Shaders
[i
]->SourceChecksum
);
912 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
913 printf(" vert prog %u\n",
914 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
915 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
916 printf(" frag prog %u\n",
917 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
918 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
919 printf(" geom prog %u\n",
920 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
925 * Use the named shader program for subsequent glUniform calls
928 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
931 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
932 _mesa_error(ctx
, GL_INVALID_OPERATION
,
933 "%s(program %u not linked)", caller
, shProg
->Name
);
937 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
938 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
945 use_shader_program(struct gl_context
*ctx
, GLenum type
,
946 struct gl_shader_program
*shProg
)
948 struct gl_shader_program
**target
;
951 case GL_VERTEX_SHADER
:
952 target
= &ctx
->Shader
.CurrentProgram
[MESA_SHADER_VERTEX
];
954 || (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
] == NULL
)) {
958 case GL_GEOMETRY_SHADER_ARB
:
959 target
= &ctx
->Shader
.CurrentProgram
[MESA_SHADER_GEOMETRY
];
961 || (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] == NULL
)) {
965 case GL_FRAGMENT_SHADER
:
966 target
= &ctx
->Shader
.CurrentProgram
[MESA_SHADER_FRAGMENT
];
968 || (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
] == NULL
)) {
976 if (*target
!= shProg
) {
977 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
979 /* If the shader is also bound as the current rendering shader, unbind
980 * it from that binding point as well. This ensures that the correct
981 * semantics of glDeleteProgram are maintained.
984 case GL_VERTEX_SHADER
:
987 case GL_GEOMETRY_SHADER_ARB
:
990 case GL_FRAGMENT_SHADER
:
991 if (*target
== ctx
->Shader
._CurrentFragmentProgram
) {
992 _mesa_reference_shader_program(ctx
,
993 &ctx
->Shader
._CurrentFragmentProgram
,
999 _mesa_reference_shader_program(ctx
, target
, shProg
);
1005 * Use the named shader program for subsequent rendering.
1008 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1010 use_shader_program(ctx
, GL_VERTEX_SHADER
, shProg
);
1011 use_shader_program(ctx
, GL_GEOMETRY_SHADER_ARB
, shProg
);
1012 use_shader_program(ctx
, GL_FRAGMENT_SHADER
, shProg
);
1013 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1015 if (ctx
->Driver
.UseProgram
)
1016 ctx
->Driver
.UseProgram(ctx
, shProg
);
1021 * Do validation of the given shader program.
1022 * \param errMsg returns error message if validation fails.
1023 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1026 validate_shader_program(const struct gl_shader_program
*shProg
,
1029 if (!shProg
->LinkStatus
) {
1033 /* From the GL spec, a program is invalid if any of these are true:
1035 any two active samplers in the current program object are of
1036 different types, but refer to the same texture image unit,
1038 any active sampler in the current program object refers to a texture
1039 image unit where fixed-function fragment processing accesses a
1040 texture target that does not match the sampler type, or
1042 the sum of the number of active samplers in the program and the
1043 number of texture image units enabled for fixed-function fragment
1044 processing exceeds the combined limit on the total number of texture
1045 image units allowed.
1050 * Check: any two active samplers in the current program object are of
1051 * different types, but refer to the same texture image unit,
1053 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1061 * Called via glValidateProgram()
1064 validate_program(struct gl_context
*ctx
, GLuint program
)
1066 struct gl_shader_program
*shProg
;
1067 char errMsg
[100] = "";
1069 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1074 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1075 if (!shProg
->Validated
) {
1076 /* update info log */
1077 if (shProg
->InfoLog
) {
1078 ralloc_free(shProg
->InfoLog
);
1080 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1087 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1089 GET_CURRENT_CONTEXT(ctx
);
1090 attach_shader(ctx
, program
, shader
);
1095 _mesa_AttachShader(GLuint program
, GLuint shader
)
1097 GET_CURRENT_CONTEXT(ctx
);
1098 attach_shader(ctx
, program
, shader
);
1103 _mesa_CompileShader(GLhandleARB shaderObj
)
1105 GET_CURRENT_CONTEXT(ctx
);
1106 if (MESA_VERBOSE
& VERBOSE_API
)
1107 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1108 compile_shader(ctx
, shaderObj
);
1113 _mesa_CreateShader(GLenum type
)
1115 GET_CURRENT_CONTEXT(ctx
);
1116 if (MESA_VERBOSE
& VERBOSE_API
)
1117 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_lookup_enum_by_nr(type
));
1118 return create_shader(ctx
, type
);
1122 GLhandleARB GLAPIENTRY
1123 _mesa_CreateShaderObjectARB(GLenum type
)
1125 GET_CURRENT_CONTEXT(ctx
);
1126 return create_shader(ctx
, type
);
1131 _mesa_CreateProgram(void)
1133 GET_CURRENT_CONTEXT(ctx
);
1134 if (MESA_VERBOSE
& VERBOSE_API
)
1135 _mesa_debug(ctx
, "glCreateProgram\n");
1136 return create_shader_program(ctx
);
1140 GLhandleARB GLAPIENTRY
1141 _mesa_CreateProgramObjectARB(void)
1143 GET_CURRENT_CONTEXT(ctx
);
1144 return create_shader_program(ctx
);
1149 _mesa_DeleteObjectARB(GLhandleARB obj
)
1151 if (MESA_VERBOSE
& VERBOSE_API
) {
1152 GET_CURRENT_CONTEXT(ctx
);
1153 _mesa_debug(ctx
, "glDeleteObjectARB(%u)\n", obj
);
1157 GET_CURRENT_CONTEXT(ctx
);
1158 FLUSH_VERTICES(ctx
, 0);
1159 if (is_program(ctx
, obj
)) {
1160 delete_shader_program(ctx
, obj
);
1162 else if (is_shader(ctx
, obj
)) {
1163 delete_shader(ctx
, obj
);
1173 _mesa_DeleteProgram(GLuint name
)
1176 GET_CURRENT_CONTEXT(ctx
);
1177 FLUSH_VERTICES(ctx
, 0);
1178 delete_shader_program(ctx
, name
);
1184 _mesa_DeleteShader(GLuint name
)
1187 GET_CURRENT_CONTEXT(ctx
);
1188 FLUSH_VERTICES(ctx
, 0);
1189 delete_shader(ctx
, name
);
1195 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1197 GET_CURRENT_CONTEXT(ctx
);
1198 detach_shader(ctx
, program
, shader
);
1203 _mesa_DetachShader(GLuint program
, GLuint shader
)
1205 GET_CURRENT_CONTEXT(ctx
);
1206 detach_shader(ctx
, program
, shader
);
1211 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1212 GLsizei
* count
, GLhandleARB
* obj
)
1214 GET_CURRENT_CONTEXT(ctx
);
1215 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1220 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1221 GLsizei
*count
, GLuint
*obj
)
1223 GET_CURRENT_CONTEXT(ctx
);
1224 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1229 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1230 GLcharARB
* infoLog
)
1232 GET_CURRENT_CONTEXT(ctx
);
1233 if (is_program(ctx
, object
)) {
1234 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1236 else if (is_shader(ctx
, object
)) {
1237 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1240 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1246 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1248 GET_CURRENT_CONTEXT(ctx
);
1249 /* Implement in terms of GetProgramiv, GetShaderiv */
1250 if (is_program(ctx
, object
)) {
1251 if (pname
== GL_OBJECT_TYPE_ARB
) {
1252 *params
= GL_PROGRAM_OBJECT_ARB
;
1255 get_programiv(ctx
, object
, pname
, params
);
1258 else if (is_shader(ctx
, object
)) {
1259 if (pname
== GL_OBJECT_TYPE_ARB
) {
1260 *params
= GL_SHADER_OBJECT_ARB
;
1263 get_shaderiv(ctx
, object
, pname
, params
);
1267 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1273 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1276 GLint iparams
[1]; /* XXX is one element enough? */
1277 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1278 params
[0] = (GLfloat
) iparams
[0];
1283 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1285 GET_CURRENT_CONTEXT(ctx
);
1286 get_programiv(ctx
, program
, pname
, params
);
1291 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1293 GET_CURRENT_CONTEXT(ctx
);
1294 get_shaderiv(ctx
, shader
, pname
, params
);
1299 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1300 GLsizei
*length
, GLchar
*infoLog
)
1302 GET_CURRENT_CONTEXT(ctx
);
1303 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1308 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1309 GLsizei
*length
, GLchar
*infoLog
)
1311 GET_CURRENT_CONTEXT(ctx
);
1312 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1317 _mesa_GetShaderSource(GLhandleARB shader
, GLsizei maxLength
,
1318 GLsizei
*length
, GLcharARB
*sourceOut
)
1320 GET_CURRENT_CONTEXT(ctx
);
1321 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1325 GLhandleARB GLAPIENTRY
1326 _mesa_GetHandleARB(GLenum pname
)
1328 GET_CURRENT_CONTEXT(ctx
);
1329 return get_handle(ctx
, pname
);
1333 GLboolean GLAPIENTRY
1334 _mesa_IsProgram(GLuint name
)
1336 GET_CURRENT_CONTEXT(ctx
);
1337 return is_program(ctx
, name
);
1341 GLboolean GLAPIENTRY
1342 _mesa_IsShader(GLuint name
)
1344 GET_CURRENT_CONTEXT(ctx
);
1345 return is_shader(ctx
, name
);
1350 _mesa_LinkProgram(GLhandleARB programObj
)
1352 GET_CURRENT_CONTEXT(ctx
);
1353 link_program(ctx
, programObj
);
1359 * Read shader source code from a file.
1360 * Useful for debugging to override an app's shader.
1363 read_shader(const char *fname
)
1365 const int max
= 50*1000;
1366 FILE *f
= fopen(fname
, "r");
1367 GLcharARB
*buffer
, *shader
;
1374 buffer
= malloc(max
);
1375 len
= fread(buffer
, 1, max
, f
);
1380 shader
= _mesa_strdup(buffer
);
1388 * Called via glShaderSource() and glShaderSourceARB() API functions.
1389 * Basically, concatenate the source code strings into one long string
1390 * and pass it to _mesa_shader_source().
1393 _mesa_ShaderSource(GLhandleARB shaderObj
, GLsizei count
,
1394 const GLcharARB
* const * string
, const GLint
* length
)
1396 GET_CURRENT_CONTEXT(ctx
);
1398 GLsizei i
, totalLength
;
1402 if (!shaderObj
|| string
== NULL
) {
1403 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1408 * This array holds offsets of where the appropriate string ends, thus the
1409 * last element will be set to the total length of the source code.
1411 offsets
= malloc(count
* sizeof(GLint
));
1412 if (offsets
== NULL
) {
1413 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1417 for (i
= 0; i
< count
; i
++) {
1418 if (string
[i
] == NULL
) {
1419 free((GLvoid
*) offsets
);
1420 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1421 "glShaderSourceARB(null string)");
1424 if (length
== NULL
|| length
[i
] < 0)
1425 offsets
[i
] = strlen(string
[i
]);
1427 offsets
[i
] = length
[i
];
1428 /* accumulate string lengths */
1430 offsets
[i
] += offsets
[i
- 1];
1433 /* Total length of source string is sum off all strings plus two.
1434 * One extra byte for terminating zero, another extra byte to silence
1435 * valgrind warnings in the parser/grammer code.
1437 totalLength
= offsets
[count
- 1] + 2;
1438 source
= malloc(totalLength
* sizeof(GLcharARB
));
1439 if (source
== NULL
) {
1440 free((GLvoid
*) offsets
);
1441 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1445 for (i
= 0; i
< count
; i
++) {
1446 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1447 memcpy(source
+ start
, string
[i
],
1448 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1450 source
[totalLength
- 1] = '\0';
1451 source
[totalLength
- 2] = '\0';
1454 /* Compute the shader's source code checksum then try to open a file
1455 * named newshader_<CHECKSUM>. If it exists, use it in place of the
1456 * original shader source code. For debugging.
1459 GLcharARB
*newSource
;
1461 checksum
= _mesa_str_checksum(source
);
1463 _mesa_snprintf(filename
, sizeof(filename
), "newshader_%d", checksum
);
1465 newSource
= read_shader(filename
);
1467 fprintf(stderr
, "Mesa: Replacing shader %u chksum=%d with %s\n",
1468 shaderObj
, checksum
, filename
);
1474 shader_source(ctx
, shaderObj
, source
);
1477 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shaderObj
);
1479 sh
->SourceChecksum
= checksum
; /* save original checksum */
1487 _mesa_UseProgram(GLhandleARB program
)
1489 GET_CURRENT_CONTEXT(ctx
);
1490 struct gl_shader_program
*shProg
;
1492 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1493 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1494 "glUseProgram(transform feedback active)");
1499 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1503 if (!shProg
->LinkStatus
) {
1504 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1505 "glUseProgram(program %u not linked)", program
);
1510 if (ctx
->Shader
.Flags
& GLSL_USE_PROG
) {
1511 print_shader_info(shProg
);
1518 _mesa_use_program(ctx
, shProg
);
1523 _mesa_ValidateProgram(GLhandleARB program
)
1525 GET_CURRENT_CONTEXT(ctx
);
1526 validate_program(ctx
, program
);
1531 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1534 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1535 GLint
* range
, GLint
* precision
)
1537 const struct gl_program_constants
*limits
;
1538 const struct gl_precision
*p
;
1539 GET_CURRENT_CONTEXT(ctx
);
1541 switch (shadertype
) {
1542 case GL_VERTEX_SHADER
:
1543 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1545 case GL_FRAGMENT_SHADER
:
1546 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1549 _mesa_error(ctx
, GL_INVALID_ENUM
,
1550 "glGetShaderPrecisionFormat(shadertype)");
1554 switch (precisiontype
) {
1556 p
= &limits
->LowFloat
;
1558 case GL_MEDIUM_FLOAT
:
1559 p
= &limits
->MediumFloat
;
1562 p
= &limits
->HighFloat
;
1565 p
= &limits
->LowInt
;
1568 p
= &limits
->MediumInt
;
1571 p
= &limits
->HighInt
;
1574 _mesa_error(ctx
, GL_INVALID_ENUM
,
1575 "glGetShaderPrecisionFormat(precisiontype)");
1579 range
[0] = p
->RangeMin
;
1580 range
[1] = p
->RangeMax
;
1581 precision
[0] = p
->Precision
;
1586 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1589 _mesa_ReleaseShaderCompiler(void)
1591 _mesa_destroy_shader_compiler_caches();
1596 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1599 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1600 const void* binary
, GLint length
)
1602 GET_CURRENT_CONTEXT(ctx
);
1605 (void) binaryformat
;
1608 _mesa_error(ctx
, GL_INVALID_OPERATION
, __FUNCTION__
);
1613 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1614 GLenum
*binaryFormat
, GLvoid
*binary
)
1616 struct gl_shader_program
*shProg
;
1617 GET_CURRENT_CONTEXT(ctx
);
1619 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1623 if (!shProg
->LinkStatus
) {
1624 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1625 "glGetProgramBinary(program %u not linked)",
1631 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1635 /* The ARB_get_program_binary spec says:
1637 * "If <length> is NULL, then no length is returned."
1642 (void) binaryFormat
;
1647 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1648 const GLvoid
*binary
, GLsizei length
)
1650 struct gl_shader_program
*shProg
;
1651 GET_CURRENT_CONTEXT(ctx
);
1653 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1657 (void) binaryFormat
;
1660 _mesa_error(ctx
, GL_INVALID_OPERATION
, __FUNCTION__
);
1665 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1667 struct gl_shader_program
*shProg
;
1668 GET_CURRENT_CONTEXT(ctx
);
1670 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1671 "glProgramParameteri");
1676 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1677 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
1678 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
1679 * even be in the dispatch table, so we shouldn't need to expclicitly
1682 * On desktop, we ignore the 3.0+ requirement because it is silly.
1685 /* The ARB_get_program_binary extension spec says:
1687 * "An INVALID_VALUE error is generated if the <value> argument to
1688 * ProgramParameteri is not TRUE or FALSE."
1690 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
1691 _mesa_error(ctx
, GL_INVALID_VALUE
,
1692 "glProgramParameteri(pname=%s, value=%d): "
1693 "value must be 0 or 1.",
1694 _mesa_lookup_enum_by_nr(pname
),
1699 /* No need to notify the driver. Any changes will actually take effect
1700 * the next time the shader is linked.
1702 * The ARB_get_program_binary extension spec says:
1704 * "To indicate that a program binary is likely to be retrieved,
1705 * ProgramParameteri should be called with <pname>
1706 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
1707 * will not be in effect until the next time LinkProgram or
1708 * ProgramBinary has been called successfully."
1710 * The resloution of issue 9 in the extension spec also says:
1712 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
1713 * to indicate to the GL implementation that this program will
1714 * likely be saved with GetProgramBinary at some point. This will
1715 * give the GL implementation the opportunity to track any state
1716 * changes made to the program before being saved such that when it
1717 * is loaded again a recompile can be avoided."
1719 shProg
->BinaryRetreivableHint
= value
;
1725 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
1726 _mesa_lookup_enum_by_nr(pname
));
1730 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
1731 struct gl_shader_program
*shProg
)
1733 use_shader_program(ctx
, type
, shProg
);
1735 if (ctx
->Driver
.UseProgram
)
1736 ctx
->Driver
.UseProgram(ctx
, shProg
);
1741 * For GL_EXT_separate_shader_objects
1744 _mesa_UseShaderProgramEXT(GLenum type
, GLuint program
)
1746 GET_CURRENT_CONTEXT(ctx
);
1747 struct gl_shader_program
*shProg
= NULL
;
1749 if (!_mesa_validate_shader_target(ctx
, type
)) {
1750 _mesa_error(ctx
, GL_INVALID_ENUM
, "glUseShaderProgramEXT(type)");
1754 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1755 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1756 "glUseShaderProgramEXT(transform feedback is active)");
1761 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1762 "glUseShaderProgramEXT");
1766 if (!shProg
->LinkStatus
) {
1767 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1768 "glUseShaderProgramEXT(program not linked)");
1773 _mesa_use_shader_program(ctx
, type
, shProg
);
1778 * For GL_EXT_separate_shader_objects
1781 _mesa_ActiveProgramEXT(GLuint program
)
1783 GET_CURRENT_CONTEXT(ctx
);
1784 struct gl_shader_program
*shProg
= (program
!= 0)
1785 ? _mesa_lookup_shader_program_err(ctx
, program
, "glActiveProgramEXT")
1788 _mesa_active_program(ctx
, shProg
, "glActiveProgramEXT");
1794 * For GL_EXT_separate_shader_objects
1797 _mesa_CreateShaderProgramEXT(GLenum type
, const GLchar
*string
)
1799 GET_CURRENT_CONTEXT(ctx
);
1800 const GLuint shader
= create_shader(ctx
, type
);
1804 shader_source(ctx
, shader
, _mesa_strdup(string
));
1805 compile_shader(ctx
, shader
);
1807 program
= create_shader_program(ctx
);
1809 struct gl_shader_program
*shProg
;
1810 struct gl_shader
*sh
;
1811 GLint compiled
= GL_FALSE
;
1813 shProg
= _mesa_lookup_shader_program(ctx
, program
);
1814 sh
= _mesa_lookup_shader(ctx
, shader
);
1816 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
1818 attach_shader(ctx
, program
, shader
);
1819 link_program(ctx
, program
);
1820 detach_shader(ctx
, program
, shader
);
1824 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
1825 append
-error
-to
-info
-log
;
1826 shProg
->LinkStatus
= GL_FALSE
;
1831 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
1834 delete_shader(ctx
, shader
);
1842 * Copy program-specific data generated by linking from the gl_shader_program
1843 * object to a specific gl_program object.
1846 _mesa_copy_linked_program_data(gl_shader_stage type
,
1847 const struct gl_shader_program
*src
,
1848 struct gl_program
*dst
)
1851 case MESA_SHADER_VERTEX
:
1852 dst
->UsesClipDistanceOut
= src
->Vert
.UsesClipDistance
;
1854 case MESA_SHADER_GEOMETRY
: {
1855 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
1856 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
1857 dst_gp
->VerticesOut
= src
->Geom
.VerticesOut
;
1858 dst_gp
->InputType
= src
->Geom
.InputType
;
1859 dst_gp
->OutputType
= src
->Geom
.OutputType
;
1860 dst
->UsesClipDistanceOut
= src
->Geom
.UsesClipDistance
;
1861 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;