2 * Mesa 3-D graphics library
4 * Copyright (C) 2004-2008 Brian Paul All Rights Reserved.
5 * Copyright (C) 2009-2010 VMware, Inc. All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
30 * Implementation of GLSL-related API functions.
31 * The glUniform* functions are in uniforms.c
35 * 1. Check that the right error code is generated for all _mesa_error() calls.
36 * 2. Insert FLUSH_VERTICES calls in various places
40 #include "main/glheader.h"
41 #include "main/context.h"
42 #include "main/dispatch.h"
43 #include "main/enums.h"
44 #include "main/hash.h"
45 #include "main/mtypes.h"
46 #include "main/pipelineobj.h"
47 #include "main/shaderapi.h"
48 #include "main/shaderobj.h"
49 #include "main/transformfeedback.h"
50 #include "main/uniforms.h"
51 #include "program/program.h"
52 #include "program/prog_print.h"
53 #include "program/prog_parameter.h"
54 #include "util/ralloc.h"
55 #include "util/hash_table.h"
57 #include "../glsl/glsl_parser_extras.h"
58 #include "../glsl/ir.h"
59 #include "../glsl/ir_uniform.h"
60 #include "../glsl/program.h"
62 /** Define this to enable shader substitution (see below) */
63 #define SHADER_SUBST 0
67 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
70 _mesa_get_shader_flags(void)
72 GLbitfield flags
= 0x0;
73 const char *env
= _mesa_getenv("MESA_GLSL");
76 if (strstr(env
, "dump_on_error"))
77 flags
|= GLSL_DUMP_ON_ERROR
;
78 else if (strstr(env
, "dump"))
80 if (strstr(env
, "log"))
82 if (strstr(env
, "nopvert"))
83 flags
|= GLSL_NOP_VERT
;
84 if (strstr(env
, "nopfrag"))
85 flags
|= GLSL_NOP_FRAG
;
86 if (strstr(env
, "nopt"))
88 else if (strstr(env
, "opt"))
90 if (strstr(env
, "uniform"))
91 flags
|= GLSL_UNIFORMS
;
92 if (strstr(env
, "useprog"))
93 flags
|= GLSL_USE_PROG
;
94 if (strstr(env
, "errors"))
95 flags
|= GLSL_REPORT_ERRORS
;
103 * Initialize context's shader state.
106 _mesa_init_shader_state(struct gl_context
*ctx
)
108 /* Device drivers may override these to control what kind of instructions
109 * are generated by the GLSL compiler.
111 struct gl_shader_compiler_options options
;
114 memset(&options
, 0, sizeof(options
));
115 options
.MaxUnrollIterations
= 32;
116 options
.MaxIfDepth
= UINT_MAX
;
118 /* Default pragma settings */
119 options
.DefaultPragmas
.Optimize
= GL_TRUE
;
121 for (sh
= 0; sh
< MESA_SHADER_STAGES
; ++sh
)
122 memcpy(&ctx
->Const
.ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
124 ctx
->Shader
.Flags
= _mesa_get_shader_flags();
126 /* Extended for ARB_separate_shader_objects */
127 ctx
->Shader
.RefCount
= 1;
128 mtx_init(&ctx
->Shader
.Mutex
, mtx_plain
);
133 * Free the per-context shader-related state.
136 _mesa_free_shader_state(struct gl_context
*ctx
)
139 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
140 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[i
],
143 _mesa_reference_shader_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
,
145 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
147 /* Extended for ARB_separate_shader_objects */
148 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
150 assert(ctx
->Shader
.RefCount
== 1);
151 mtx_destroy(&ctx
->Shader
.Mutex
);
156 * Copy string from <src> to <dst>, up to maxLength characters, returning
157 * length of <dst> in <length>.
158 * \param src the strings source
159 * \param maxLength max chars to copy
160 * \param length returns number of chars copied
161 * \param dst the string destination
164 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
165 GLsizei
*length
, const GLchar
*src
)
168 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
179 * Confirm that the a shader type is valid and supported by the implementation
181 * \param ctx Current GL context
182 * \param type Shader target
186 _mesa_validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
188 /* Note: when building built-in GLSL functions, this function may be
189 * invoked with ctx == NULL. In that case, we can only validate that it's
190 * a shader target we recognize, not that it's supported in the current
191 * context. But that's fine--we don't need any further validation than
192 * that when building built-in GLSL functions.
196 case GL_FRAGMENT_SHADER
:
197 return ctx
== NULL
|| ctx
->Extensions
.ARB_fragment_shader
;
198 case GL_VERTEX_SHADER
:
199 return ctx
== NULL
|| ctx
->Extensions
.ARB_vertex_shader
;
200 case GL_GEOMETRY_SHADER_ARB
:
201 return ctx
== NULL
|| _mesa_has_geometry_shaders(ctx
);
202 case GL_COMPUTE_SHADER
:
203 return ctx
== NULL
|| ctx
->Extensions
.ARB_compute_shader
;
211 is_program(struct gl_context
*ctx
, GLuint name
)
213 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
214 return shProg
? GL_TRUE
: GL_FALSE
;
219 is_shader(struct gl_context
*ctx
, GLuint name
)
221 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
222 return shader
? GL_TRUE
: GL_FALSE
;
227 * Attach shader to a shader program.
230 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
232 struct gl_shader_program
*shProg
;
233 struct gl_shader
*sh
;
236 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
238 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
242 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
247 n
= shProg
->NumShaders
;
248 for (i
= 0; i
< n
; i
++) {
249 if (shProg
->Shaders
[i
] == sh
) {
250 /* The shader is already attched to this program. The
251 * GL_ARB_shader_objects spec says:
253 * "The error INVALID_OPERATION is generated by AttachObjectARB
254 * if <obj> is already attached to <containerObj>."
256 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
258 } else if (same_type_disallowed
&&
259 shProg
->Shaders
[i
]->Type
== sh
->Type
) {
260 /* Shader with the same type is already attached to this program,
261 * OpenGL ES 2.0 and 3.0 specs say:
263 * "Multiple shader objects of the same type may not be attached
264 * to a single program object. [...] The error INVALID_OPERATION
265 * is generated if [...] another shader object of the same type
266 * as shader is already attached to program."
268 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
274 shProg
->Shaders
= (struct gl_shader
**)
275 _mesa_realloc(shProg
->Shaders
,
276 n
* sizeof(struct gl_shader
*),
277 (n
+ 1) * sizeof(struct gl_shader
*));
278 if (!shProg
->Shaders
) {
279 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
284 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
285 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
286 shProg
->NumShaders
++;
291 create_shader(struct gl_context
*ctx
, GLenum type
)
293 struct gl_shader
*sh
;
296 if (!_mesa_validate_shader_target(ctx
, type
)) {
297 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(type)");
301 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
302 sh
= ctx
->Driver
.NewShader(ctx
, name
, type
);
303 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, sh
);
310 create_shader_program(struct gl_context
*ctx
)
313 struct gl_shader_program
*shProg
;
315 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
317 shProg
= ctx
->Driver
.NewShaderProgram(ctx
, name
);
319 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, shProg
);
321 assert(shProg
->RefCount
== 1);
328 * Named w/ "2" to indicate OpenGL 2.x vs GL_ARB_fragment_programs's
332 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
335 * NOTE: deleting shaders/programs works a bit differently than
336 * texture objects (and buffer objects, etc). Shader/program
337 * handles/IDs exist in the hash table until the object is really
338 * deleted (refcount==0). With texture objects, the handle/ID is
339 * removed from the hash table in glDeleteTextures() while the tex
340 * object itself might linger until its refcount goes to zero.
342 struct gl_shader_program
*shProg
;
344 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
348 if (!shProg
->DeletePending
) {
349 shProg
->DeletePending
= GL_TRUE
;
351 /* effectively, decr shProg's refcount */
352 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
358 delete_shader(struct gl_context
*ctx
, GLuint shader
)
360 struct gl_shader
*sh
;
362 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
366 if (!sh
->DeletePending
) {
367 sh
->DeletePending
= GL_TRUE
;
369 /* effectively, decr sh's refcount */
370 _mesa_reference_shader(ctx
, &sh
, NULL
);
376 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
378 struct gl_shader_program
*shProg
;
382 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
386 n
= shProg
->NumShaders
;
388 for (i
= 0; i
< n
; i
++) {
389 if (shProg
->Shaders
[i
]->Name
== shader
) {
391 struct gl_shader
**newList
;
394 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
396 /* alloc new, smaller array */
397 newList
= malloc((n
- 1) * sizeof(struct gl_shader
*));
399 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
402 /* Copy old list entries to new list, skipping removed entry at [i] */
403 for (j
= 0; j
< i
; j
++) {
404 newList
[j
] = shProg
->Shaders
[j
];
407 newList
[j
++] = shProg
->Shaders
[i
];
410 /* Free old list and install new one */
411 free(shProg
->Shaders
);
412 shProg
->Shaders
= newList
;
413 shProg
->NumShaders
= n
- 1;
416 /* sanity check - make sure the new list's entries are sensible */
417 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
418 assert(shProg
->Shaders
[j
]->Type
== GL_VERTEX_SHADER
||
419 shProg
->Shaders
[j
]->Type
== GL_GEOMETRY_SHADER
||
420 shProg
->Shaders
[j
]->Type
== GL_FRAGMENT_SHADER
);
421 assert(shProg
->Shaders
[j
]->RefCount
> 0);
432 if (is_shader(ctx
, shader
))
433 err
= GL_INVALID_OPERATION
;
434 else if (is_program(ctx
, shader
))
435 err
= GL_INVALID_OPERATION
;
437 err
= GL_INVALID_VALUE
;
438 _mesa_error(ctx
, err
, "glDetachShader(shader)");
445 * Return list of shaders attached to shader program.
448 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
449 GLsizei
*count
, GLuint
*obj
)
451 struct gl_shader_program
*shProg
=
452 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
455 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
456 obj
[i
] = shProg
->Shaders
[i
]->Name
;
465 * glGetHandleARB() - return ID/name of currently bound shader program.
468 get_handle(struct gl_context
*ctx
, GLenum pname
)
470 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
471 if (ctx
->_Shader
->ActiveProgram
)
472 return ctx
->_Shader
->ActiveProgram
->Name
;
477 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
484 * Check if a geometry shader query is valid at this time. If not, report an
485 * error and return false.
487 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
489 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
490 * are queried for a program which has not been linked successfully, or
491 * which does not contain objects to form a geometry shader, then an
492 * INVALID_OPERATION error is generated."
495 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
497 if (shProg
->LinkStatus
&&
498 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
502 _mesa_error(ctx
, GL_INVALID_OPERATION
,
503 "glGetProgramv(linked geometry shader required)");
509 * glGetProgramiv() - get shader program state.
510 * Note that this is for GLSL shader programs, not ARB vertex/fragment
511 * programs (see glGetProgramivARB).
514 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
, GLint
*params
)
516 struct gl_shader_program
*shProg
517 = _mesa_lookup_shader_program(ctx
, program
);
519 /* Is transform feedback available in this context?
522 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
523 || ctx
->API
== API_OPENGL_CORE
524 || _mesa_is_gles3(ctx
);
526 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
527 * and GL 3.2) are available in this context
529 const bool has_core_gs
= _mesa_is_desktop_gl(ctx
) && ctx
->Version
>= 32;
531 /* Are uniform buffer objects available in this context?
534 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.ARB_uniform_buffer_object
)
535 || ctx
->API
== API_OPENGL_CORE
536 || _mesa_is_gles3(ctx
);
539 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramiv(program)");
544 case GL_DELETE_STATUS
:
545 *params
= shProg
->DeletePending
;
548 *params
= shProg
->LinkStatus
;
550 case GL_VALIDATE_STATUS
:
551 *params
= shProg
->Validated
;
553 case GL_INFO_LOG_LENGTH
:
554 *params
= shProg
->InfoLog
? strlen(shProg
->InfoLog
) + 1 : 0;
556 case GL_ATTACHED_SHADERS
:
557 *params
= shProg
->NumShaders
;
559 case GL_ACTIVE_ATTRIBUTES
:
560 *params
= _mesa_count_active_attribs(shProg
);
562 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
563 *params
= _mesa_longest_attribute_name_length(shProg
);
565 case GL_ACTIVE_UNIFORMS
:
566 *params
= shProg
->NumUserUniformStorage
;
568 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
572 for (i
= 0; i
< shProg
->NumUserUniformStorage
; i
++) {
573 /* Add one for the terminating NUL character for a non-array, and
574 * 4 for the "[0]" and the NUL for an array.
576 const GLint len
= strlen(shProg
->UniformStorage
[i
].name
) + 1 +
577 ((shProg
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
586 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
589 *params
= shProg
->TransformFeedback
.NumVarying
;
591 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
597 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
598 /* Add one for the terminating NUL character.
600 const GLint len
= strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
609 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
612 *params
= shProg
->TransformFeedback
.BufferMode
;
614 case GL_GEOMETRY_VERTICES_OUT
:
617 if (check_gs_query(ctx
, shProg
))
618 *params
= shProg
->Geom
.VerticesOut
;
620 case GL_GEOMETRY_SHADER_INVOCATIONS
:
621 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
623 if (check_gs_query(ctx
, shProg
))
624 *params
= shProg
->Geom
.Invocations
;
626 case GL_GEOMETRY_INPUT_TYPE
:
629 if (check_gs_query(ctx
, shProg
))
630 *params
= shProg
->Geom
.InputType
;
632 case GL_GEOMETRY_OUTPUT_TYPE
:
635 if (check_gs_query(ctx
, shProg
))
636 *params
= shProg
->Geom
.OutputType
;
638 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
645 for (i
= 0; i
< shProg
->NumUniformBlocks
; i
++) {
646 /* Add one for the terminating NUL character.
648 const GLint len
= strlen(shProg
->UniformBlocks
[i
].Name
) + 1;
657 case GL_ACTIVE_UNIFORM_BLOCKS
:
661 *params
= shProg
->NumUniformBlocks
;
663 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
664 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
665 * only available with desktop OpenGL 3.0+ with the
666 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
668 * On desktop, we ignore the 3.0+ requirement because it is silly.
670 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
673 *params
= shProg
->BinaryRetreivableHint
;
675 case GL_PROGRAM_BINARY_LENGTH
:
678 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
679 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
682 *params
= shProg
->NumAtomicBuffers
;
684 case GL_COMPUTE_WORK_GROUP_SIZE
: {
686 if (!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_compute_shader
)
688 if (!shProg
->LinkStatus
) {
689 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
693 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
694 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
698 for (i
= 0; i
< 3; i
++)
699 params
[i
] = shProg
->Comp
.LocalSize
[i
];
702 case GL_PROGRAM_SEPARABLE
:
703 *params
= shProg
->SeparateShader
;
709 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
710 _mesa_lookup_enum_by_nr(pname
));
715 * glGetShaderiv() - get GLSL shader state
718 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
720 struct gl_shader
*shader
=
721 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
729 *params
= shader
->Type
;
731 case GL_DELETE_STATUS
:
732 *params
= shader
->DeletePending
;
734 case GL_COMPILE_STATUS
:
735 *params
= shader
->CompileStatus
;
737 case GL_INFO_LOG_LENGTH
:
738 *params
= shader
->InfoLog
? strlen(shader
->InfoLog
) + 1 : 0;
740 case GL_SHADER_SOURCE_LENGTH
:
741 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
744 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
751 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
752 GLsizei
*length
, GLchar
*infoLog
)
754 struct gl_shader_program
*shProg
755 = _mesa_lookup_shader_program(ctx
, program
);
757 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(program)");
760 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
765 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
766 GLsizei
*length
, GLchar
*infoLog
)
768 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shader
);
770 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(shader)");
773 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
778 * Return shader source code.
781 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
782 GLsizei
*length
, GLchar
*sourceOut
)
784 struct gl_shader
*sh
;
785 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
789 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
794 * Set/replace shader source code. A helper function used by
795 * glShaderSource[ARB].
798 shader_source(struct gl_context
*ctx
, GLuint shader
, const GLchar
*source
)
800 struct gl_shader
*sh
;
802 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glShaderSource");
806 /* free old shader source string and install new one */
807 free((void *)sh
->Source
);
809 sh
->CompileStatus
= GL_FALSE
;
811 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
820 compile_shader(struct gl_context
*ctx
, GLuint shaderObj
)
822 struct gl_shader
*sh
;
823 struct gl_shader_compiler_options
*options
;
825 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glCompileShader");
829 options
= &ctx
->Const
.ShaderCompilerOptions
[sh
->Stage
];
831 /* set default pragma state for shader */
832 sh
->Pragmas
= options
->DefaultPragmas
;
835 /* If the user called glCompileShader without first calling
836 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
838 sh
->CompileStatus
= GL_FALSE
;
840 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
841 fprintf(stderr
, "GLSL source for %s shader %d:\n",
842 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
843 fprintf(stderr
, "%s\n", sh
->Source
);
847 /* this call will set the shader->CompileStatus field to indicate if
848 * compilation was successful.
850 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
852 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
853 _mesa_write_shader_to_file(sh
);
856 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
857 if (sh
->CompileStatus
) {
858 fprintf(stderr
, "GLSL IR for shader %d:\n", sh
->Name
);
859 _mesa_print_ir(stderr
, sh
->ir
, NULL
);
860 fprintf(stderr
, "\n\n");
862 fprintf(stderr
, "GLSL shader %d failed to compile.\n", sh
->Name
);
864 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
865 fprintf(stderr
, "GLSL shader %d info log:\n", sh
->Name
);
866 fprintf(stderr
, "%s\n", sh
->InfoLog
);
873 if (!sh
->CompileStatus
) {
874 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
875 fprintf(stderr
, "GLSL source for %s shader %d:\n",
876 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
877 fprintf(stderr
, "%s\n", sh
->Source
);
878 fprintf(stderr
, "Info Log:\n%s\n", sh
->InfoLog
);
882 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
883 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
884 sh
->Name
, sh
->InfoLog
);
891 * Link a program's shaders.
894 link_program(struct gl_context
*ctx
, GLuint program
)
896 struct gl_shader_program
*shProg
;
898 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glLinkProgram");
902 /* From the ARB_transform_feedback2 specification:
903 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
904 * the name of a program being used by one or more transform feedback
905 * objects, even if the objects are not currently bound or are paused."
907 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
908 _mesa_error(ctx
, GL_INVALID_OPERATION
,
909 "glLinkProgram(transform feedback is using the program)");
913 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
915 _mesa_glsl_link_shader(ctx
, shProg
);
917 if (shProg
->LinkStatus
== GL_FALSE
&&
918 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
919 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
920 shProg
->Name
, shProg
->InfoLog
);
927 printf("Link %u shaders in program %u: %s\n",
928 shProg
->NumShaders
, shProg
->Name
,
929 shProg
->LinkStatus
? "Success" : "Failed");
931 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
932 printf(" shader %u, type 0x%x\n",
933 shProg
->Shaders
[i
]->Name
,
934 shProg
->Shaders
[i
]->Type
);
941 * Print basic shader info (for debug).
944 print_shader_info(const struct gl_shader_program
*shProg
)
948 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
949 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
950 printf(" %s shader %u, checksum %u\n",
951 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
952 shProg
->Shaders
[i
]->Name
,
953 shProg
->Shaders
[i
]->SourceChecksum
);
955 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
956 printf(" vert prog %u\n",
957 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
958 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
959 printf(" frag prog %u\n",
960 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
961 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
962 printf(" geom prog %u\n",
963 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
968 * Use the named shader program for subsequent glUniform calls
971 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
974 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
975 _mesa_error(ctx
, GL_INVALID_OPERATION
,
976 "%s(program %u not linked)", caller
, shProg
->Name
);
980 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
981 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
988 use_shader_program(struct gl_context
*ctx
, GLenum type
,
989 struct gl_shader_program
*shProg
,
990 struct gl_pipeline_object
*shTarget
)
992 struct gl_shader_program
**target
;
993 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
995 target
= &shTarget
->CurrentProgram
[stage
];
996 if ((shProg
== NULL
) || (shProg
->_LinkedShaders
[stage
] == NULL
))
999 if (*target
!= shProg
) {
1000 /* Program is current, flush it */
1001 if (shTarget
== ctx
->_Shader
) {
1002 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1005 /* If the shader is also bound as the current rendering shader, unbind
1006 * it from that binding point as well. This ensures that the correct
1007 * semantics of glDeleteProgram are maintained.
1010 case GL_VERTEX_SHADER
:
1011 /* Empty for now. */
1013 case GL_GEOMETRY_SHADER_ARB
:
1014 /* Empty for now. */
1016 case GL_COMPUTE_SHADER
:
1017 /* Empty for now. */
1019 case GL_FRAGMENT_SHADER
:
1020 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1021 _mesa_reference_shader_program(ctx
,
1022 &ctx
->_Shader
->_CurrentFragmentProgram
,
1028 _mesa_reference_shader_program(ctx
, target
, shProg
);
1034 * Use the named shader program for subsequent rendering.
1037 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1039 use_shader_program(ctx
, GL_VERTEX_SHADER
, shProg
, &ctx
->Shader
);
1040 use_shader_program(ctx
, GL_GEOMETRY_SHADER_ARB
, shProg
, &ctx
->Shader
);
1041 use_shader_program(ctx
, GL_FRAGMENT_SHADER
, shProg
, &ctx
->Shader
);
1042 use_shader_program(ctx
, GL_COMPUTE_SHADER
, shProg
, &ctx
->Shader
);
1043 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1045 if (ctx
->Driver
.UseProgram
)
1046 ctx
->Driver
.UseProgram(ctx
, shProg
);
1051 * Do validation of the given shader program.
1052 * \param errMsg returns error message if validation fails.
1053 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1056 validate_shader_program(const struct gl_shader_program
*shProg
,
1059 if (!shProg
->LinkStatus
) {
1063 /* From the GL spec, a program is invalid if any of these are true:
1065 any two active samplers in the current program object are of
1066 different types, but refer to the same texture image unit,
1068 any active sampler in the current program object refers to a texture
1069 image unit where fixed-function fragment processing accesses a
1070 texture target that does not match the sampler type, or
1072 the sum of the number of active samplers in the program and the
1073 number of texture image units enabled for fixed-function fragment
1074 processing exceeds the combined limit on the total number of texture
1075 image units allowed.
1080 * Check: any two active samplers in the current program object are of
1081 * different types, but refer to the same texture image unit,
1083 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1091 * Called via glValidateProgram()
1094 validate_program(struct gl_context
*ctx
, GLuint program
)
1096 struct gl_shader_program
*shProg
;
1097 char errMsg
[100] = "";
1099 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1104 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1105 if (!shProg
->Validated
) {
1106 /* update info log */
1107 if (shProg
->InfoLog
) {
1108 ralloc_free(shProg
->InfoLog
);
1110 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1117 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1119 GET_CURRENT_CONTEXT(ctx
);
1120 attach_shader(ctx
, program
, shader
);
1125 _mesa_AttachShader(GLuint program
, GLuint shader
)
1127 GET_CURRENT_CONTEXT(ctx
);
1128 attach_shader(ctx
, program
, shader
);
1133 _mesa_CompileShader(GLhandleARB shaderObj
)
1135 GET_CURRENT_CONTEXT(ctx
);
1136 if (MESA_VERBOSE
& VERBOSE_API
)
1137 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1138 compile_shader(ctx
, shaderObj
);
1143 _mesa_CreateShader(GLenum type
)
1145 GET_CURRENT_CONTEXT(ctx
);
1146 if (MESA_VERBOSE
& VERBOSE_API
)
1147 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_lookup_enum_by_nr(type
));
1148 return create_shader(ctx
, type
);
1152 GLhandleARB GLAPIENTRY
1153 _mesa_CreateShaderObjectARB(GLenum type
)
1155 GET_CURRENT_CONTEXT(ctx
);
1156 return create_shader(ctx
, type
);
1161 _mesa_CreateProgram(void)
1163 GET_CURRENT_CONTEXT(ctx
);
1164 if (MESA_VERBOSE
& VERBOSE_API
)
1165 _mesa_debug(ctx
, "glCreateProgram\n");
1166 return create_shader_program(ctx
);
1170 GLhandleARB GLAPIENTRY
1171 _mesa_CreateProgramObjectARB(void)
1173 GET_CURRENT_CONTEXT(ctx
);
1174 return create_shader_program(ctx
);
1179 _mesa_DeleteObjectARB(GLhandleARB obj
)
1181 if (MESA_VERBOSE
& VERBOSE_API
) {
1182 GET_CURRENT_CONTEXT(ctx
);
1183 _mesa_debug(ctx
, "glDeleteObjectARB(%u)\n", obj
);
1187 GET_CURRENT_CONTEXT(ctx
);
1188 FLUSH_VERTICES(ctx
, 0);
1189 if (is_program(ctx
, obj
)) {
1190 delete_shader_program(ctx
, obj
);
1192 else if (is_shader(ctx
, obj
)) {
1193 delete_shader(ctx
, obj
);
1203 _mesa_DeleteProgram(GLuint name
)
1206 GET_CURRENT_CONTEXT(ctx
);
1207 FLUSH_VERTICES(ctx
, 0);
1208 delete_shader_program(ctx
, name
);
1214 _mesa_DeleteShader(GLuint name
)
1217 GET_CURRENT_CONTEXT(ctx
);
1218 FLUSH_VERTICES(ctx
, 0);
1219 delete_shader(ctx
, name
);
1225 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1227 GET_CURRENT_CONTEXT(ctx
);
1228 detach_shader(ctx
, program
, shader
);
1233 _mesa_DetachShader(GLuint program
, GLuint shader
)
1235 GET_CURRENT_CONTEXT(ctx
);
1236 detach_shader(ctx
, program
, shader
);
1241 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1242 GLsizei
* count
, GLhandleARB
* obj
)
1244 GET_CURRENT_CONTEXT(ctx
);
1245 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1250 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1251 GLsizei
*count
, GLuint
*obj
)
1253 GET_CURRENT_CONTEXT(ctx
);
1254 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1259 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1260 GLcharARB
* infoLog
)
1262 GET_CURRENT_CONTEXT(ctx
);
1263 if (is_program(ctx
, object
)) {
1264 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1266 else if (is_shader(ctx
, object
)) {
1267 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1270 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1276 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1278 GET_CURRENT_CONTEXT(ctx
);
1279 /* Implement in terms of GetProgramiv, GetShaderiv */
1280 if (is_program(ctx
, object
)) {
1281 if (pname
== GL_OBJECT_TYPE_ARB
) {
1282 *params
= GL_PROGRAM_OBJECT_ARB
;
1285 get_programiv(ctx
, object
, pname
, params
);
1288 else if (is_shader(ctx
, object
)) {
1289 if (pname
== GL_OBJECT_TYPE_ARB
) {
1290 *params
= GL_SHADER_OBJECT_ARB
;
1293 get_shaderiv(ctx
, object
, pname
, params
);
1297 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1303 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1306 GLint iparams
[1]; /* XXX is one element enough? */
1307 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1308 params
[0] = (GLfloat
) iparams
[0];
1313 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1315 GET_CURRENT_CONTEXT(ctx
);
1316 get_programiv(ctx
, program
, pname
, params
);
1321 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1323 GET_CURRENT_CONTEXT(ctx
);
1324 get_shaderiv(ctx
, shader
, pname
, params
);
1329 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1330 GLsizei
*length
, GLchar
*infoLog
)
1332 GET_CURRENT_CONTEXT(ctx
);
1333 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1338 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1339 GLsizei
*length
, GLchar
*infoLog
)
1341 GET_CURRENT_CONTEXT(ctx
);
1342 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1347 _mesa_GetShaderSource(GLhandleARB shader
, GLsizei maxLength
,
1348 GLsizei
*length
, GLcharARB
*sourceOut
)
1350 GET_CURRENT_CONTEXT(ctx
);
1351 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1355 GLhandleARB GLAPIENTRY
1356 _mesa_GetHandleARB(GLenum pname
)
1358 GET_CURRENT_CONTEXT(ctx
);
1359 return get_handle(ctx
, pname
);
1363 GLboolean GLAPIENTRY
1364 _mesa_IsProgram(GLuint name
)
1366 GET_CURRENT_CONTEXT(ctx
);
1367 return is_program(ctx
, name
);
1371 GLboolean GLAPIENTRY
1372 _mesa_IsShader(GLuint name
)
1374 GET_CURRENT_CONTEXT(ctx
);
1375 return is_shader(ctx
, name
);
1380 _mesa_LinkProgram(GLhandleARB programObj
)
1382 GET_CURRENT_CONTEXT(ctx
);
1383 link_program(ctx
, programObj
);
1389 * Read shader source code from a file.
1390 * Useful for debugging to override an app's shader.
1393 read_shader(const char *fname
)
1395 int shader_size
= 0;
1396 FILE *f
= fopen(fname
, "r");
1397 GLcharARB
*buffer
, *shader
;
1404 /* allocate enough room for the entire shader */
1405 fseek(f
, 0, SEEK_END
);
1406 shader_size
= ftell(f
);
1408 assert(shader_size
);
1410 /* add one for terminating zero */
1413 buffer
= malloc(shader_size
);
1416 len
= fread(buffer
, 1, shader_size
, f
);
1421 shader
= _mesa_strdup(buffer
);
1429 * Called via glShaderSource() and glShaderSourceARB() API functions.
1430 * Basically, concatenate the source code strings into one long string
1431 * and pass it to _mesa_shader_source().
1434 _mesa_ShaderSource(GLhandleARB shaderObj
, GLsizei count
,
1435 const GLcharARB
* const * string
, const GLint
* length
)
1437 GET_CURRENT_CONTEXT(ctx
);
1439 GLsizei i
, totalLength
;
1443 if (!shaderObj
|| string
== NULL
) {
1444 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1449 * This array holds offsets of where the appropriate string ends, thus the
1450 * last element will be set to the total length of the source code.
1452 offsets
= malloc(count
* sizeof(GLint
));
1453 if (offsets
== NULL
) {
1454 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1458 for (i
= 0; i
< count
; i
++) {
1459 if (string
[i
] == NULL
) {
1460 free((GLvoid
*) offsets
);
1461 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1462 "glShaderSourceARB(null string)");
1465 if (length
== NULL
|| length
[i
] < 0)
1466 offsets
[i
] = strlen(string
[i
]);
1468 offsets
[i
] = length
[i
];
1469 /* accumulate string lengths */
1471 offsets
[i
] += offsets
[i
- 1];
1474 /* Total length of source string is sum off all strings plus two.
1475 * One extra byte for terminating zero, another extra byte to silence
1476 * valgrind warnings in the parser/grammer code.
1478 totalLength
= offsets
[count
- 1] + 2;
1479 source
= malloc(totalLength
* sizeof(GLcharARB
));
1480 if (source
== NULL
) {
1481 free((GLvoid
*) offsets
);
1482 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1486 for (i
= 0; i
< count
; i
++) {
1487 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1488 memcpy(source
+ start
, string
[i
],
1489 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1491 source
[totalLength
- 1] = '\0';
1492 source
[totalLength
- 2] = '\0';
1495 /* Compute the shader's source code checksum then try to open a file
1496 * named newshader_<CHECKSUM>. If it exists, use it in place of the
1497 * original shader source code. For debugging.
1500 GLcharARB
*newSource
;
1502 checksum
= _mesa_str_checksum(source
);
1504 _mesa_snprintf(filename
, sizeof(filename
), "newshader_%d", checksum
);
1506 newSource
= read_shader(filename
);
1508 fprintf(stderr
, "Mesa: Replacing shader %u chksum=%d with %s\n",
1509 shaderObj
, checksum
, filename
);
1515 shader_source(ctx
, shaderObj
, source
);
1518 struct gl_shader
*sh
= _mesa_lookup_shader(ctx
, shaderObj
);
1520 sh
->SourceChecksum
= checksum
; /* save original checksum */
1528 _mesa_UseProgram(GLhandleARB program
)
1530 GET_CURRENT_CONTEXT(ctx
);
1531 struct gl_shader_program
*shProg
;
1533 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1534 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1535 "glUseProgram(transform feedback active)");
1540 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1544 if (!shProg
->LinkStatus
) {
1545 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1546 "glUseProgram(program %u not linked)", program
);
1551 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1552 print_shader_info(shProg
);
1559 /* The ARB_separate_shader_object spec says:
1561 * "The executable code for an individual shader stage is taken from
1562 * the current program for that stage. If there is a current program
1563 * object established by UseProgram, that program is considered current
1564 * for all stages. Otherwise, if there is a bound program pipeline
1565 * object (section 2.14.PPO), the program bound to the appropriate
1566 * stage of the pipeline object is considered current."
1569 /* Attach shader state to the binding point */
1570 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1571 /* Update the program */
1572 _mesa_use_program(ctx
, shProg
);
1574 /* Must be done first: detach the progam */
1575 _mesa_use_program(ctx
, shProg
);
1576 /* Unattach shader_state binding point */
1577 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1578 /* If a pipeline was bound, rebind it */
1579 if (ctx
->Pipeline
.Current
) {
1580 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1587 _mesa_ValidateProgram(GLhandleARB program
)
1589 GET_CURRENT_CONTEXT(ctx
);
1590 validate_program(ctx
, program
);
1595 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1598 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1599 GLint
* range
, GLint
* precision
)
1601 const struct gl_program_constants
*limits
;
1602 const struct gl_precision
*p
;
1603 GET_CURRENT_CONTEXT(ctx
);
1605 switch (shadertype
) {
1606 case GL_VERTEX_SHADER
:
1607 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1609 case GL_FRAGMENT_SHADER
:
1610 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1613 _mesa_error(ctx
, GL_INVALID_ENUM
,
1614 "glGetShaderPrecisionFormat(shadertype)");
1618 switch (precisiontype
) {
1620 p
= &limits
->LowFloat
;
1622 case GL_MEDIUM_FLOAT
:
1623 p
= &limits
->MediumFloat
;
1626 p
= &limits
->HighFloat
;
1629 p
= &limits
->LowInt
;
1632 p
= &limits
->MediumInt
;
1635 p
= &limits
->HighInt
;
1638 _mesa_error(ctx
, GL_INVALID_ENUM
,
1639 "glGetShaderPrecisionFormat(precisiontype)");
1643 range
[0] = p
->RangeMin
;
1644 range
[1] = p
->RangeMax
;
1645 precision
[0] = p
->Precision
;
1650 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1653 _mesa_ReleaseShaderCompiler(void)
1655 _mesa_destroy_shader_compiler_caches();
1660 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1663 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1664 const void* binary
, GLint length
)
1666 GET_CURRENT_CONTEXT(ctx
);
1669 (void) binaryformat
;
1672 _mesa_error(ctx
, GL_INVALID_OPERATION
, __FUNCTION__
);
1677 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1678 GLenum
*binaryFormat
, GLvoid
*binary
)
1680 struct gl_shader_program
*shProg
;
1681 GET_CURRENT_CONTEXT(ctx
);
1683 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1687 if (!shProg
->LinkStatus
) {
1688 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1689 "glGetProgramBinary(program %u not linked)",
1695 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1699 /* The ARB_get_program_binary spec says:
1701 * "If <length> is NULL, then no length is returned."
1706 (void) binaryFormat
;
1711 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1712 const GLvoid
*binary
, GLsizei length
)
1714 struct gl_shader_program
*shProg
;
1715 GET_CURRENT_CONTEXT(ctx
);
1717 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1721 (void) binaryFormat
;
1724 _mesa_error(ctx
, GL_INVALID_OPERATION
, __FUNCTION__
);
1729 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1731 struct gl_shader_program
*shProg
;
1732 GET_CURRENT_CONTEXT(ctx
);
1734 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1735 "glProgramParameteri");
1740 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1741 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
1742 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
1743 * even be in the dispatch table, so we shouldn't need to expclicitly
1746 * On desktop, we ignore the 3.0+ requirement because it is silly.
1749 /* The ARB_get_program_binary extension spec says:
1751 * "An INVALID_VALUE error is generated if the <value> argument to
1752 * ProgramParameteri is not TRUE or FALSE."
1754 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
1755 _mesa_error(ctx
, GL_INVALID_VALUE
,
1756 "glProgramParameteri(pname=%s, value=%d): "
1757 "value must be 0 or 1.",
1758 _mesa_lookup_enum_by_nr(pname
),
1763 /* No need to notify the driver. Any changes will actually take effect
1764 * the next time the shader is linked.
1766 * The ARB_get_program_binary extension spec says:
1768 * "To indicate that a program binary is likely to be retrieved,
1769 * ProgramParameteri should be called with <pname>
1770 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
1771 * will not be in effect until the next time LinkProgram or
1772 * ProgramBinary has been called successfully."
1774 * The resloution of issue 9 in the extension spec also says:
1776 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
1777 * to indicate to the GL implementation that this program will
1778 * likely be saved with GetProgramBinary at some point. This will
1779 * give the GL implementation the opportunity to track any state
1780 * changes made to the program before being saved such that when it
1781 * is loaded again a recompile can be avoided."
1783 shProg
->BinaryRetreivableHint
= value
;
1786 case GL_PROGRAM_SEPARABLE
:
1787 /* Spec imply that the behavior is the same as ARB_get_program_binary
1788 * Chapter 7.3 Program Objects
1790 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
1791 _mesa_error(ctx
, GL_INVALID_VALUE
,
1792 "glProgramParameteri(pname=%s, value=%d): "
1793 "value must be 0 or 1.",
1794 _mesa_lookup_enum_by_nr(pname
),
1798 shProg
->SeparateShader
= value
;
1805 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
1806 _mesa_lookup_enum_by_nr(pname
));
1810 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
1811 struct gl_shader_program
*shProg
,
1812 struct gl_pipeline_object
*shTarget
)
1814 use_shader_program(ctx
, type
, shProg
, shTarget
);
1816 if (ctx
->Driver
.UseProgram
)
1817 ctx
->Driver
.UseProgram(ctx
, shProg
);
1822 _mesa_create_shader_program(struct gl_context
* ctx
, GLboolean separate
,
1823 GLenum type
, GLsizei count
, const GLchar
* const *strings
)
1825 const GLuint shader
= create_shader(ctx
, type
);
1829 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
1831 compile_shader(ctx
, shader
);
1833 program
= create_shader_program(ctx
);
1835 struct gl_shader_program
*shProg
;
1836 struct gl_shader
*sh
;
1837 GLint compiled
= GL_FALSE
;
1839 shProg
= _mesa_lookup_shader_program(ctx
, program
);
1840 sh
= _mesa_lookup_shader(ctx
, shader
);
1842 shProg
->SeparateShader
= separate
;
1844 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
1846 attach_shader(ctx
, program
, shader
);
1847 link_program(ctx
, program
);
1848 detach_shader(ctx
, program
, shader
);
1852 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
1853 append
-error
-to
-info
-log
;
1854 shProg
->LinkStatus
= GL_FALSE
;
1859 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
1862 delete_shader(ctx
, shader
);
1870 * Copy program-specific data generated by linking from the gl_shader_program
1871 * object to a specific gl_program object.
1874 _mesa_copy_linked_program_data(gl_shader_stage type
,
1875 const struct gl_shader_program
*src
,
1876 struct gl_program
*dst
)
1879 case MESA_SHADER_VERTEX
:
1880 dst
->UsesClipDistanceOut
= src
->Vert
.UsesClipDistance
;
1882 case MESA_SHADER_GEOMETRY
: {
1883 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
1884 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
1885 dst_gp
->VerticesOut
= src
->Geom
.VerticesOut
;
1886 dst_gp
->Invocations
= src
->Geom
.Invocations
;
1887 dst_gp
->InputType
= src
->Geom
.InputType
;
1888 dst_gp
->OutputType
= src
->Geom
.OutputType
;
1889 dst
->UsesClipDistanceOut
= src
->Geom
.UsesClipDistance
;
1890 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;
1891 dst_gp
->UsesStreams
= src
->Geom
.UsesStreams
;
1894 case MESA_SHADER_FRAGMENT
: {
1895 struct gl_fragment_program
*dst_fp
= (struct gl_fragment_program
*) dst
;
1896 dst_fp
->FragDepthLayout
= src
->FragDepthLayout
;
1899 case MESA_SHADER_COMPUTE
: {
1900 struct gl_compute_program
*dst_cp
= (struct gl_compute_program
*) dst
;
1902 for (i
= 0; i
< 3; i
++)
1903 dst_cp
->LocalSize
[i
] = src
->Comp
.LocalSize
[i
];
1912 * ARB_separate_shader_objects: Compile & Link Program
1915 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
1916 const GLchar
* const *strings
)
1918 GET_CURRENT_CONTEXT(ctx
);
1920 return _mesa_create_shader_program(ctx
, GL_TRUE
, type
, count
, strings
);