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
41 #include "main/glheader.h"
42 #include "main/context.h"
43 #include "main/dispatch.h"
44 #include "main/enums.h"
45 #include "main/hash.h"
46 #include "main/mtypes.h"
47 #include "main/pipelineobj.h"
48 #include "main/shaderapi.h"
49 #include "main/shaderobj.h"
50 #include "main/transformfeedback.h"
51 #include "main/uniforms.h"
52 #include "glsl/glsl_parser_extras.h"
54 #include "glsl/ir_uniform.h"
55 #include "glsl/program.h"
56 #include "program/program.h"
57 #include "program/prog_print.h"
58 #include "program/prog_parameter.h"
59 #include "util/ralloc.h"
60 #include "util/hash_table.h"
61 #include "util/mesa-sha1.h"
65 * Return mask of GLSL_x flags by examining the MESA_GLSL env var.
68 _mesa_get_shader_flags(void)
70 GLbitfield flags
= 0x0;
71 const char *env
= getenv("MESA_GLSL");
74 if (strstr(env
, "dump_on_error"))
75 flags
|= GLSL_DUMP_ON_ERROR
;
76 else if (strstr(env
, "dump"))
78 if (strstr(env
, "log"))
80 if (strstr(env
, "nopvert"))
81 flags
|= GLSL_NOP_VERT
;
82 if (strstr(env
, "nopfrag"))
83 flags
|= GLSL_NOP_FRAG
;
84 if (strstr(env
, "nopt"))
86 else if (strstr(env
, "opt"))
88 if (strstr(env
, "uniform"))
89 flags
|= GLSL_UNIFORMS
;
90 if (strstr(env
, "useprog"))
91 flags
|= GLSL_USE_PROG
;
92 if (strstr(env
, "errors"))
93 flags
|= GLSL_REPORT_ERRORS
;
101 * Initialize context's shader state.
104 _mesa_init_shader_state(struct gl_context
*ctx
)
106 /* Device drivers may override these to control what kind of instructions
107 * are generated by the GLSL compiler.
109 struct gl_shader_compiler_options options
;
113 memset(&options
, 0, sizeof(options
));
114 options
.MaxUnrollIterations
= 32;
115 options
.MaxIfDepth
= UINT_MAX
;
117 for (sh
= 0; sh
< MESA_SHADER_STAGES
; ++sh
)
118 memcpy(&ctx
->Const
.ShaderCompilerOptions
[sh
], &options
, sizeof(options
));
120 ctx
->Shader
.Flags
= _mesa_get_shader_flags();
122 if (ctx
->Shader
.Flags
!= 0)
123 ctx
->Const
.GenerateTemporaryNames
= true;
125 /* Extended for ARB_separate_shader_objects */
126 ctx
->Shader
.RefCount
= 1;
127 mtx_init(&ctx
->Shader
.Mutex
, mtx_plain
);
129 ctx
->TessCtrlProgram
.patch_vertices
= 3;
130 for (i
= 0; i
< 4; ++i
)
131 ctx
->TessCtrlProgram
.patch_default_outer_level
[i
] = 1.0;
132 for (i
= 0; i
< 2; ++i
)
133 ctx
->TessCtrlProgram
.patch_default_inner_level
[i
] = 1.0;
138 * Free the per-context shader-related state.
141 _mesa_free_shader_state(struct gl_context
*ctx
)
144 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
145 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.CurrentProgram
[i
],
148 _mesa_reference_shader_program(ctx
, &ctx
->Shader
._CurrentFragmentProgram
,
150 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, NULL
);
152 /* Extended for ARB_separate_shader_objects */
153 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, NULL
);
155 assert(ctx
->Shader
.RefCount
== 1);
156 mtx_destroy(&ctx
->Shader
.Mutex
);
161 * Copy string from <src> to <dst>, up to maxLength characters, returning
162 * length of <dst> in <length>.
163 * \param src the strings source
164 * \param maxLength max chars to copy
165 * \param length returns number of chars copied
166 * \param dst the string destination
169 _mesa_copy_string(GLchar
*dst
, GLsizei maxLength
,
170 GLsizei
*length
, const GLchar
*src
)
173 for (len
= 0; len
< maxLength
- 1 && src
&& src
[len
]; len
++)
184 * Confirm that the a shader type is valid and supported by the implementation
186 * \param ctx Current GL context
187 * \param type Shader target
191 _mesa_validate_shader_target(const struct gl_context
*ctx
, GLenum type
)
193 /* Note: when building built-in GLSL functions, this function may be
194 * invoked with ctx == NULL. In that case, we can only validate that it's
195 * a shader target we recognize, not that it's supported in the current
196 * context. But that's fine--we don't need any further validation than
197 * that when building built-in GLSL functions.
201 case GL_FRAGMENT_SHADER
:
202 return ctx
== NULL
|| ctx
->Extensions
.ARB_fragment_shader
;
203 case GL_VERTEX_SHADER
:
204 return ctx
== NULL
|| ctx
->Extensions
.ARB_vertex_shader
;
205 case GL_GEOMETRY_SHADER_ARB
:
206 return ctx
== NULL
|| _mesa_has_geometry_shaders(ctx
);
207 case GL_TESS_CONTROL_SHADER
:
208 case GL_TESS_EVALUATION_SHADER
:
209 return ctx
== NULL
|| _mesa_has_tessellation(ctx
);
210 case GL_COMPUTE_SHADER
:
211 return ctx
== NULL
|| ctx
->Extensions
.ARB_compute_shader
;
219 is_program(struct gl_context
*ctx
, GLuint name
)
221 struct gl_shader_program
*shProg
= _mesa_lookup_shader_program(ctx
, name
);
222 return shProg
? GL_TRUE
: GL_FALSE
;
227 is_shader(struct gl_context
*ctx
, GLuint name
)
229 struct gl_shader
*shader
= _mesa_lookup_shader(ctx
, name
);
230 return shader
? GL_TRUE
: GL_FALSE
;
235 * Attach shader to a shader program.
238 attach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
240 struct gl_shader_program
*shProg
;
241 struct gl_shader
*sh
;
244 const bool same_type_disallowed
= _mesa_is_gles(ctx
);
246 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glAttachShader");
250 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glAttachShader");
255 n
= shProg
->NumShaders
;
256 for (i
= 0; i
< n
; i
++) {
257 if (shProg
->Shaders
[i
] == sh
) {
258 /* The shader is already attched to this program. The
259 * GL_ARB_shader_objects spec says:
261 * "The error INVALID_OPERATION is generated by AttachObjectARB
262 * if <obj> is already attached to <containerObj>."
264 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
266 } else if (same_type_disallowed
&&
267 shProg
->Shaders
[i
]->Type
== sh
->Type
) {
268 /* Shader with the same type is already attached to this program,
269 * OpenGL ES 2.0 and 3.0 specs say:
271 * "Multiple shader objects of the same type may not be attached
272 * to a single program object. [...] The error INVALID_OPERATION
273 * is generated if [...] another shader object of the same type
274 * as shader is already attached to program."
276 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glAttachShader");
282 shProg
->Shaders
= realloc(shProg
->Shaders
,
283 (n
+ 1) * sizeof(struct gl_shader
*));
284 if (!shProg
->Shaders
) {
285 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glAttachShader");
290 shProg
->Shaders
[n
] = NULL
; /* since realloc() didn't zero the new space */
291 _mesa_reference_shader(ctx
, &shProg
->Shaders
[n
], sh
);
292 shProg
->NumShaders
++;
297 create_shader(struct gl_context
*ctx
, GLenum type
)
299 struct gl_shader
*sh
;
302 if (!_mesa_validate_shader_target(ctx
, type
)) {
303 _mesa_error(ctx
, GL_INVALID_ENUM
, "CreateShader(type)");
307 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
308 sh
= ctx
->Driver
.NewShader(ctx
, name
, type
);
309 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, sh
);
316 create_shader_program(struct gl_context
*ctx
)
319 struct gl_shader_program
*shProg
;
321 name
= _mesa_HashFindFreeKeyBlock(ctx
->Shared
->ShaderObjects
, 1);
323 shProg
= _mesa_new_shader_program(name
);
325 _mesa_HashInsert(ctx
->Shared
->ShaderObjects
, name
, shProg
);
327 assert(shProg
->RefCount
== 1);
334 * Delete a shader program. Actually, just decrement the program's
335 * reference count and mark it as DeletePending.
336 * Used to implement glDeleteProgram() and glDeleteObjectARB().
339 delete_shader_program(struct gl_context
*ctx
, GLuint name
)
342 * NOTE: deleting shaders/programs works a bit differently than
343 * texture objects (and buffer objects, etc). Shader/program
344 * handles/IDs exist in the hash table until the object is really
345 * deleted (refcount==0). With texture objects, the handle/ID is
346 * removed from the hash table in glDeleteTextures() while the tex
347 * object itself might linger until its refcount goes to zero.
349 struct gl_shader_program
*shProg
;
351 shProg
= _mesa_lookup_shader_program_err(ctx
, name
, "glDeleteProgram");
355 if (!shProg
->DeletePending
) {
356 shProg
->DeletePending
= GL_TRUE
;
358 /* effectively, decr shProg's refcount */
359 _mesa_reference_shader_program(ctx
, &shProg
, NULL
);
365 delete_shader(struct gl_context
*ctx
, GLuint shader
)
367 struct gl_shader
*sh
;
369 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glDeleteShader");
373 if (!sh
->DeletePending
) {
374 sh
->DeletePending
= GL_TRUE
;
376 /* effectively, decr sh's refcount */
377 _mesa_reference_shader(ctx
, &sh
, NULL
);
383 detach_shader(struct gl_context
*ctx
, GLuint program
, GLuint shader
)
385 struct gl_shader_program
*shProg
;
389 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glDetachShader");
393 n
= shProg
->NumShaders
;
395 for (i
= 0; i
< n
; i
++) {
396 if (shProg
->Shaders
[i
]->Name
== shader
) {
398 struct gl_shader
**newList
;
401 _mesa_reference_shader(ctx
, &shProg
->Shaders
[i
], NULL
);
403 /* alloc new, smaller array */
404 newList
= malloc((n
- 1) * sizeof(struct gl_shader
*));
406 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glDetachShader");
409 /* Copy old list entries to new list, skipping removed entry at [i] */
410 for (j
= 0; j
< i
; j
++) {
411 newList
[j
] = shProg
->Shaders
[j
];
414 newList
[j
++] = shProg
->Shaders
[i
];
417 /* Free old list and install new one */
418 free(shProg
->Shaders
);
419 shProg
->Shaders
= newList
;
420 shProg
->NumShaders
= n
- 1;
423 /* sanity check - make sure the new list's entries are sensible */
424 for (j
= 0; j
< shProg
->NumShaders
; j
++) {
425 assert(shProg
->Shaders
[j
]->Type
== GL_VERTEX_SHADER
||
426 shProg
->Shaders
[j
]->Type
== GL_TESS_CONTROL_SHADER
||
427 shProg
->Shaders
[j
]->Type
== GL_TESS_EVALUATION_SHADER
||
428 shProg
->Shaders
[j
]->Type
== GL_GEOMETRY_SHADER
||
429 shProg
->Shaders
[j
]->Type
== GL_FRAGMENT_SHADER
);
430 assert(shProg
->Shaders
[j
]->RefCount
> 0);
441 if (is_shader(ctx
, shader
) || is_program(ctx
, shader
))
442 err
= GL_INVALID_OPERATION
;
444 err
= GL_INVALID_VALUE
;
445 _mesa_error(ctx
, err
, "glDetachShader(shader)");
452 * Return list of shaders attached to shader program.
455 get_attached_shaders(struct gl_context
*ctx
, GLuint program
, GLsizei maxCount
,
456 GLsizei
*count
, GLuint
*obj
)
458 struct gl_shader_program
*shProg
;
461 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetAttachedShaders(maxCount < 0)");
466 _mesa_lookup_shader_program_err(ctx
, program
, "glGetAttachedShaders");
470 for (i
= 0; i
< (GLuint
) maxCount
&& i
< shProg
->NumShaders
; i
++) {
471 obj
[i
] = shProg
->Shaders
[i
]->Name
;
480 * glGetHandleARB() - return ID/name of currently bound shader program.
483 get_handle(struct gl_context
*ctx
, GLenum pname
)
485 if (pname
== GL_PROGRAM_OBJECT_ARB
) {
486 if (ctx
->_Shader
->ActiveProgram
)
487 return ctx
->_Shader
->ActiveProgram
->Name
;
492 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetHandleARB");
499 * Check if a geometry shader query is valid at this time. If not, report an
500 * error and return false.
502 * From GL 3.2 section 6.1.16 (Shader and Program Queries):
504 * "If GEOMETRY_VERTICES_OUT, GEOMETRY_INPUT_TYPE, or GEOMETRY_OUTPUT_TYPE
505 * are queried for a program which has not been linked successfully, or
506 * which does not contain objects to form a geometry shader, then an
507 * INVALID_OPERATION error is generated."
510 check_gs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
512 if (shProg
->LinkStatus
&&
513 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
] != NULL
) {
517 _mesa_error(ctx
, GL_INVALID_OPERATION
,
518 "glGetProgramv(linked geometry shader required)");
524 * Check if a tessellation control shader query is valid at this time.
525 * If not, report an error and return false.
527 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
529 * "If TESS_CONTROL_OUTPUT_VERTICES is queried for a program which has
530 * not been linked successfully, or which does not contain objects to
531 * form a tessellation control shader, then an INVALID_OPERATION error is
535 check_tcs_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
537 if (shProg
->LinkStatus
&&
538 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
] != NULL
) {
542 _mesa_error(ctx
, GL_INVALID_OPERATION
,
543 "glGetProgramv(linked tessellation control shader required)");
549 * Check if a tessellation evaluation shader query is valid at this time.
550 * If not, report an error and return false.
552 * From GL 4.0 section 6.1.12 (Shader and Program Queries):
554 * "If any of the pname values in this paragraph are queried for a program
555 * which has not been linked successfully, or which does not contain
556 * objects to form a tessellation evaluation shader, then an
557 * INVALID_OPERATION error is generated."
561 check_tes_query(struct gl_context
*ctx
, const struct gl_shader_program
*shProg
)
563 if (shProg
->LinkStatus
&&
564 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
] != NULL
) {
568 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramv(linked tessellation "
569 "evaluation shader required)");
575 * glGetProgramiv() - get shader program state.
576 * Note that this is for GLSL shader programs, not ARB vertex/fragment
577 * programs (see glGetProgramivARB).
580 get_programiv(struct gl_context
*ctx
, GLuint program
, GLenum pname
,
583 struct gl_shader_program
*shProg
584 = _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramiv(program)");
586 /* Is transform feedback available in this context?
589 (ctx
->API
== API_OPENGL_COMPAT
&& ctx
->Extensions
.EXT_transform_feedback
)
590 || ctx
->API
== API_OPENGL_CORE
591 || _mesa_is_gles3(ctx
);
593 /* True if geometry shaders (of the form that was adopted into GLSL 1.50
594 * and GL 3.2) are available in this context
596 const bool has_core_gs
= _mesa_has_geometry_shaders(ctx
);
597 const bool has_tess
= _mesa_has_tessellation(ctx
);
599 /* Are uniform buffer objects available in this context?
602 (ctx
->API
== API_OPENGL_COMPAT
&&
603 ctx
->Extensions
.ARB_uniform_buffer_object
)
604 || ctx
->API
== API_OPENGL_CORE
605 || _mesa_is_gles3(ctx
);
612 case GL_DELETE_STATUS
:
613 *params
= shProg
->DeletePending
;
616 *params
= shProg
->LinkStatus
;
618 case GL_VALIDATE_STATUS
:
619 *params
= shProg
->Validated
;
621 case GL_INFO_LOG_LENGTH
:
622 *params
= shProg
->InfoLog
? strlen(shProg
->InfoLog
) + 1 : 0;
624 case GL_ATTACHED_SHADERS
:
625 *params
= shProg
->NumShaders
;
627 case GL_ACTIVE_ATTRIBUTES
:
628 *params
= _mesa_count_active_attribs(shProg
);
630 case GL_ACTIVE_ATTRIBUTE_MAX_LENGTH
:
631 *params
= _mesa_longest_attribute_name_length(shProg
);
633 case GL_ACTIVE_UNIFORMS
:
634 *params
= shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
636 case GL_ACTIVE_UNIFORM_MAX_LENGTH
: {
639 const unsigned num_uniforms
=
640 shProg
->NumUniformStorage
- shProg
->NumHiddenUniforms
;
642 for (i
= 0; i
< num_uniforms
; i
++) {
643 /* Add one for the terminating NUL character for a non-array, and
644 * 4 for the "[0]" and the NUL for an array.
646 const GLint len
= strlen(shProg
->UniformStorage
[i
].name
) + 1 +
647 ((shProg
->UniformStorage
[i
].array_elements
!= 0) ? 3 : 0);
656 case GL_TRANSFORM_FEEDBACK_VARYINGS
:
659 *params
= shProg
->TransformFeedback
.NumVarying
;
661 case GL_TRANSFORM_FEEDBACK_VARYING_MAX_LENGTH
: {
667 for (i
= 0; i
< shProg
->TransformFeedback
.NumVarying
; i
++) {
668 /* Add one for the terminating NUL character.
671 strlen(shProg
->TransformFeedback
.VaryingNames
[i
]) + 1;
680 case GL_TRANSFORM_FEEDBACK_BUFFER_MODE
:
683 *params
= shProg
->TransformFeedback
.BufferMode
;
685 case GL_GEOMETRY_VERTICES_OUT
:
688 if (check_gs_query(ctx
, shProg
))
689 *params
= shProg
->Geom
.VerticesOut
;
691 case GL_GEOMETRY_SHADER_INVOCATIONS
:
692 if (!has_core_gs
|| !ctx
->Extensions
.ARB_gpu_shader5
)
694 if (check_gs_query(ctx
, shProg
))
695 *params
= shProg
->Geom
.Invocations
;
697 case GL_GEOMETRY_INPUT_TYPE
:
700 if (check_gs_query(ctx
, shProg
))
701 *params
= shProg
->Geom
.InputType
;
703 case GL_GEOMETRY_OUTPUT_TYPE
:
706 if (check_gs_query(ctx
, shProg
))
707 *params
= shProg
->Geom
.OutputType
;
709 case GL_ACTIVE_UNIFORM_BLOCK_MAX_NAME_LENGTH
: {
716 for (i
= 0; i
< shProg
->NumBufferInterfaceBlocks
; i
++) {
717 /* Add one for the terminating NUL character.
719 const GLint len
= strlen(shProg
->UniformBlocks
[i
].Name
) + 1;
728 case GL_ACTIVE_UNIFORM_BLOCKS
:
733 for (unsigned i
= 0; i
< shProg
->NumBufferInterfaceBlocks
; i
++) {
734 if (!shProg
->UniformBlocks
[i
].IsShaderStorage
)
738 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
739 /* This enum isn't part of the OES extension for OpenGL ES 2.0. It is
740 * only available with desktop OpenGL 3.0+ with the
741 * GL_ARB_get_program_binary extension or OpenGL ES 3.0.
743 * On desktop, we ignore the 3.0+ requirement because it is silly.
745 if (!_mesa_is_desktop_gl(ctx
) && !_mesa_is_gles3(ctx
))
748 *params
= shProg
->BinaryRetreivableHint
;
750 case GL_PROGRAM_BINARY_LENGTH
:
753 case GL_ACTIVE_ATOMIC_COUNTER_BUFFERS
:
754 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
757 *params
= shProg
->NumAtomicBuffers
;
759 case GL_COMPUTE_WORK_GROUP_SIZE
: {
761 if (!_mesa_has_compute_shaders(ctx
))
763 if (!shProg
->LinkStatus
) {
764 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(program not "
768 if (shProg
->_LinkedShaders
[MESA_SHADER_COMPUTE
] == NULL
) {
769 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetProgramiv(no compute "
773 for (i
= 0; i
< 3; i
++)
774 params
[i
] = shProg
->Comp
.LocalSize
[i
];
777 case GL_PROGRAM_SEPARABLE
:
778 /* If the program has not been linked, return initial value 0. */
779 *params
= (shProg
->LinkStatus
== GL_FALSE
) ? 0 : shProg
->SeparateShader
;
782 /* ARB_tessellation_shader */
783 case GL_TESS_CONTROL_OUTPUT_VERTICES
:
786 if (check_tcs_query(ctx
, shProg
))
787 *params
= shProg
->TessCtrl
.VerticesOut
;
789 case GL_TESS_GEN_MODE
:
792 if (check_tes_query(ctx
, shProg
))
793 *params
= shProg
->TessEval
.PrimitiveMode
;
795 case GL_TESS_GEN_SPACING
:
798 if (check_tes_query(ctx
, shProg
))
799 *params
= shProg
->TessEval
.Spacing
;
801 case GL_TESS_GEN_VERTEX_ORDER
:
804 if (check_tes_query(ctx
, shProg
))
805 *params
= shProg
->TessEval
.VertexOrder
;
807 case GL_TESS_GEN_POINT_MODE
:
810 if (check_tes_query(ctx
, shProg
))
811 *params
= shProg
->TessEval
.PointMode
;
817 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetProgramiv(pname=%s)",
818 _mesa_enum_to_string(pname
));
823 * glGetShaderiv() - get GLSL shader state
826 get_shaderiv(struct gl_context
*ctx
, GLuint name
, GLenum pname
, GLint
*params
)
828 struct gl_shader
*shader
=
829 _mesa_lookup_shader_err(ctx
, name
, "glGetShaderiv");
837 *params
= shader
->Type
;
839 case GL_DELETE_STATUS
:
840 *params
= shader
->DeletePending
;
842 case GL_COMPILE_STATUS
:
843 *params
= shader
->CompileStatus
;
845 case GL_INFO_LOG_LENGTH
:
846 *params
= shader
->InfoLog
? strlen(shader
->InfoLog
) + 1 : 0;
848 case GL_SHADER_SOURCE_LENGTH
:
849 *params
= shader
->Source
? strlen((char *) shader
->Source
) + 1 : 0;
852 _mesa_error(ctx
, GL_INVALID_ENUM
, "glGetShaderiv(pname)");
859 get_program_info_log(struct gl_context
*ctx
, GLuint program
, GLsizei bufSize
,
860 GLsizei
*length
, GLchar
*infoLog
)
862 struct gl_shader_program
*shProg
;
864 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
865 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
867 * "If a negative number is provided where an argument of type sizei or
868 * sizeiptr is specified, an INVALID_VALUE error is generated."
871 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramInfoLog(bufSize < 0)");
875 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
876 "glGetProgramInfoLog(program)");
881 _mesa_copy_string(infoLog
, bufSize
, length
, shProg
->InfoLog
);
886 get_shader_info_log(struct gl_context
*ctx
, GLuint shader
, GLsizei bufSize
,
887 GLsizei
*length
, GLchar
*infoLog
)
889 struct gl_shader
*sh
;
891 /* Section 2.5 GL Errors (page 18) of the OpenGL ES 3.0.4 spec and
892 * section 2.3.1 (Errors) of the OpenGL 4.5 spec say:
894 * "If a negative number is provided where an argument of type sizei or
895 * sizeiptr is specified, an INVALID_VALUE error is generated."
898 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderInfoLog(bufSize < 0)");
902 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderInfoLog(shader)");
907 _mesa_copy_string(infoLog
, bufSize
, length
, sh
->InfoLog
);
912 * Return shader source code.
915 get_shader_source(struct gl_context
*ctx
, GLuint shader
, GLsizei maxLength
,
916 GLsizei
*length
, GLchar
*sourceOut
)
918 struct gl_shader
*sh
;
921 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetShaderSource(bufSize < 0)");
925 sh
= _mesa_lookup_shader_err(ctx
, shader
, "glGetShaderSource");
929 _mesa_copy_string(sourceOut
, maxLength
, length
, sh
->Source
);
934 * Set/replace shader source code. A helper function used by
935 * glShaderSource[ARB].
938 shader_source(struct gl_shader
*sh
, const GLchar
*source
)
942 /* free old shader source string and install new one */
943 free((void *)sh
->Source
);
945 sh
->CompileStatus
= GL_FALSE
;
947 sh
->SourceChecksum
= _mesa_str_checksum(sh
->Source
);
956 compile_shader(struct gl_context
*ctx
, GLuint shaderObj
)
958 struct gl_shader
*sh
;
960 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glCompileShader");
965 /* If the user called glCompileShader without first calling
966 * glShaderSource, we should fail to compile, but not raise a GL_ERROR.
968 sh
->CompileStatus
= GL_FALSE
;
970 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
971 _mesa_log("GLSL source for %s shader %d:\n",
972 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
973 _mesa_log("%s\n", sh
->Source
);
976 /* this call will set the shader->CompileStatus field to indicate if
977 * compilation was successful.
979 _mesa_glsl_compile_shader(ctx
, sh
, false, false);
981 if (ctx
->_Shader
->Flags
& GLSL_LOG
) {
982 _mesa_write_shader_to_file(sh
);
985 if (ctx
->_Shader
->Flags
& GLSL_DUMP
) {
986 if (sh
->CompileStatus
) {
987 _mesa_log("GLSL IR for shader %d:\n", sh
->Name
);
988 _mesa_print_ir(_mesa_get_log_file(), sh
->ir
, NULL
);
991 _mesa_log("GLSL shader %d failed to compile.\n", sh
->Name
);
993 if (sh
->InfoLog
&& sh
->InfoLog
[0] != 0) {
994 _mesa_log("GLSL shader %d info log:\n", sh
->Name
);
995 _mesa_log("%s\n", sh
->InfoLog
);
1000 if (!sh
->CompileStatus
) {
1001 if (ctx
->_Shader
->Flags
& GLSL_DUMP_ON_ERROR
) {
1002 _mesa_log("GLSL source for %s shader %d:\n",
1003 _mesa_shader_stage_to_string(sh
->Stage
), sh
->Name
);
1004 _mesa_log("%s\n", sh
->Source
);
1005 _mesa_log("Info Log:\n%s\n", sh
->InfoLog
);
1008 if (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
) {
1009 _mesa_debug(ctx
, "Error compiling shader %u:\n%s\n",
1010 sh
->Name
, sh
->InfoLog
);
1017 * Link a program's shaders.
1020 link_program(struct gl_context
*ctx
, GLuint program
)
1022 struct gl_shader_program
*shProg
;
1024 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glLinkProgram");
1028 /* From the ARB_transform_feedback2 specification:
1029 * "The error INVALID_OPERATION is generated by LinkProgram if <program> is
1030 * the name of a program being used by one or more transform feedback
1031 * objects, even if the objects are not currently bound or are paused."
1033 if (_mesa_transform_feedback_is_using_program(ctx
, shProg
)) {
1034 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1035 "glLinkProgram(transform feedback is using the program)");
1039 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
);
1041 _mesa_glsl_link_shader(ctx
, shProg
);
1043 if (shProg
->LinkStatus
== GL_FALSE
&&
1044 (ctx
->_Shader
->Flags
& GLSL_REPORT_ERRORS
)) {
1045 _mesa_debug(ctx
, "Error linking program %u:\n%s\n",
1046 shProg
->Name
, shProg
->InfoLog
);
1053 printf("Link %u shaders in program %u: %s\n",
1054 shProg
->NumShaders
, shProg
->Name
,
1055 shProg
->LinkStatus
? "Success" : "Failed");
1057 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1058 printf(" shader %u, type 0x%x\n",
1059 shProg
->Shaders
[i
]->Name
,
1060 shProg
->Shaders
[i
]->Type
);
1067 * Print basic shader info (for debug).
1070 print_shader_info(const struct gl_shader_program
*shProg
)
1074 printf("Mesa: glUseProgram(%u)\n", shProg
->Name
);
1075 for (i
= 0; i
< shProg
->NumShaders
; i
++) {
1076 printf(" %s shader %u, checksum %u\n",
1077 _mesa_shader_stage_to_string(shProg
->Shaders
[i
]->Stage
),
1078 shProg
->Shaders
[i
]->Name
,
1079 shProg
->Shaders
[i
]->SourceChecksum
);
1081 if (shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
])
1082 printf(" vert prog %u\n",
1083 shProg
->_LinkedShaders
[MESA_SHADER_VERTEX
]->Program
->Id
);
1084 if (shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
])
1085 printf(" frag prog %u\n",
1086 shProg
->_LinkedShaders
[MESA_SHADER_FRAGMENT
]->Program
->Id
);
1087 if (shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
])
1088 printf(" geom prog %u\n",
1089 shProg
->_LinkedShaders
[MESA_SHADER_GEOMETRY
]->Program
->Id
);
1090 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
])
1091 printf(" tesc prog %u\n",
1092 shProg
->_LinkedShaders
[MESA_SHADER_TESS_CTRL
]->Program
->Id
);
1093 if (shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
])
1094 printf(" tese prog %u\n",
1095 shProg
->_LinkedShaders
[MESA_SHADER_TESS_EVAL
]->Program
->Id
);
1100 * Use the named shader program for subsequent glUniform calls
1103 _mesa_active_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
,
1106 if ((shProg
!= NULL
) && !shProg
->LinkStatus
) {
1107 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1108 "%s(program %u not linked)", caller
, shProg
->Name
);
1112 if (ctx
->Shader
.ActiveProgram
!= shProg
) {
1113 _mesa_reference_shader_program(ctx
, &ctx
->Shader
.ActiveProgram
, shProg
);
1119 use_shader_program(struct gl_context
*ctx
, gl_shader_stage stage
,
1120 struct gl_shader_program
*shProg
,
1121 struct gl_pipeline_object
*shTarget
)
1123 struct gl_shader_program
**target
;
1125 target
= &shTarget
->CurrentProgram
[stage
];
1126 if ((shProg
!= NULL
) && (shProg
->_LinkedShaders
[stage
] == NULL
))
1129 if (*target
!= shProg
) {
1130 /* Program is current, flush it */
1131 if (shTarget
== ctx
->_Shader
) {
1132 FLUSH_VERTICES(ctx
, _NEW_PROGRAM
| _NEW_PROGRAM_CONSTANTS
);
1135 /* If the shader is also bound as the current rendering shader, unbind
1136 * it from that binding point as well. This ensures that the correct
1137 * semantics of glDeleteProgram are maintained.
1140 case MESA_SHADER_VERTEX
:
1141 case MESA_SHADER_TESS_CTRL
:
1142 case MESA_SHADER_TESS_EVAL
:
1143 case MESA_SHADER_GEOMETRY
:
1144 case MESA_SHADER_COMPUTE
:
1145 /* Empty for now. */
1147 case MESA_SHADER_FRAGMENT
:
1148 if (*target
== ctx
->_Shader
->_CurrentFragmentProgram
) {
1149 _mesa_reference_shader_program(ctx
,
1150 &ctx
->_Shader
->_CurrentFragmentProgram
,
1156 _mesa_reference_shader_program(ctx
, target
, shProg
);
1163 * Use the named shader program for subsequent rendering.
1166 _mesa_use_program(struct gl_context
*ctx
, struct gl_shader_program
*shProg
)
1169 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++)
1170 use_shader_program(ctx
, i
, shProg
, &ctx
->Shader
);
1171 _mesa_active_program(ctx
, shProg
, "glUseProgram");
1173 _mesa_shader_program_init_subroutine_defaults(shProg
);
1174 if (ctx
->Driver
.UseProgram
)
1175 ctx
->Driver
.UseProgram(ctx
, shProg
);
1180 * Do validation of the given shader program.
1181 * \param errMsg returns error message if validation fails.
1182 * \return GL_TRUE if valid, GL_FALSE if invalid (and set errMsg)
1185 validate_shader_program(const struct gl_shader_program
*shProg
,
1188 if (!shProg
->LinkStatus
) {
1192 /* From the GL spec, a program is invalid if any of these are true:
1194 any two active samplers in the current program object are of
1195 different types, but refer to the same texture image unit,
1197 any active sampler in the current program object refers to a texture
1198 image unit where fixed-function fragment processing accesses a
1199 texture target that does not match the sampler type, or
1201 the sum of the number of active samplers in the program and the
1202 number of texture image units enabled for fixed-function fragment
1203 processing exceeds the combined limit on the total number of texture
1204 image units allowed.
1208 * Check: any two active samplers in the current program object are of
1209 * different types, but refer to the same texture image unit,
1211 if (!_mesa_sampler_uniforms_are_valid(shProg
, errMsg
, 100))
1219 * Called via glValidateProgram()
1222 validate_program(struct gl_context
*ctx
, GLuint program
)
1224 struct gl_shader_program
*shProg
;
1225 char errMsg
[100] = "";
1227 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glValidateProgram");
1232 shProg
->Validated
= validate_shader_program(shProg
, errMsg
);
1233 if (!shProg
->Validated
) {
1234 /* update info log */
1235 if (shProg
->InfoLog
) {
1236 ralloc_free(shProg
->InfoLog
);
1238 shProg
->InfoLog
= ralloc_strdup(shProg
, errMsg
);
1245 _mesa_AttachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1247 GET_CURRENT_CONTEXT(ctx
);
1248 attach_shader(ctx
, program
, shader
);
1253 _mesa_AttachShader(GLuint program
, GLuint shader
)
1255 GET_CURRENT_CONTEXT(ctx
);
1256 attach_shader(ctx
, program
, shader
);
1261 _mesa_CompileShader(GLhandleARB shaderObj
)
1263 GET_CURRENT_CONTEXT(ctx
);
1264 if (MESA_VERBOSE
& VERBOSE_API
)
1265 _mesa_debug(ctx
, "glCompileShader %u\n", shaderObj
);
1266 compile_shader(ctx
, shaderObj
);
1271 _mesa_CreateShader(GLenum type
)
1273 GET_CURRENT_CONTEXT(ctx
);
1274 if (MESA_VERBOSE
& VERBOSE_API
)
1275 _mesa_debug(ctx
, "glCreateShader %s\n", _mesa_enum_to_string(type
));
1276 return create_shader(ctx
, type
);
1280 GLhandleARB GLAPIENTRY
1281 _mesa_CreateShaderObjectARB(GLenum type
)
1283 GET_CURRENT_CONTEXT(ctx
);
1284 return create_shader(ctx
, type
);
1289 _mesa_CreateProgram(void)
1291 GET_CURRENT_CONTEXT(ctx
);
1292 if (MESA_VERBOSE
& VERBOSE_API
)
1293 _mesa_debug(ctx
, "glCreateProgram\n");
1294 return create_shader_program(ctx
);
1298 GLhandleARB GLAPIENTRY
1299 _mesa_CreateProgramObjectARB(void)
1301 GET_CURRENT_CONTEXT(ctx
);
1302 return create_shader_program(ctx
);
1307 _mesa_DeleteObjectARB(GLhandleARB obj
)
1309 if (MESA_VERBOSE
& VERBOSE_API
) {
1310 GET_CURRENT_CONTEXT(ctx
);
1311 _mesa_debug(ctx
, "glDeleteObjectARB(%u)\n", obj
);
1315 GET_CURRENT_CONTEXT(ctx
);
1316 FLUSH_VERTICES(ctx
, 0);
1317 if (is_program(ctx
, obj
)) {
1318 delete_shader_program(ctx
, obj
);
1320 else if (is_shader(ctx
, obj
)) {
1321 delete_shader(ctx
, obj
);
1331 _mesa_DeleteProgram(GLuint name
)
1334 GET_CURRENT_CONTEXT(ctx
);
1335 FLUSH_VERTICES(ctx
, 0);
1336 delete_shader_program(ctx
, name
);
1342 _mesa_DeleteShader(GLuint name
)
1345 GET_CURRENT_CONTEXT(ctx
);
1346 FLUSH_VERTICES(ctx
, 0);
1347 delete_shader(ctx
, name
);
1353 _mesa_DetachObjectARB(GLhandleARB program
, GLhandleARB shader
)
1355 GET_CURRENT_CONTEXT(ctx
);
1356 detach_shader(ctx
, program
, shader
);
1361 _mesa_DetachShader(GLuint program
, GLuint shader
)
1363 GET_CURRENT_CONTEXT(ctx
);
1364 detach_shader(ctx
, program
, shader
);
1369 _mesa_GetAttachedObjectsARB(GLhandleARB container
, GLsizei maxCount
,
1370 GLsizei
* count
, GLhandleARB
* obj
)
1372 GET_CURRENT_CONTEXT(ctx
);
1373 get_attached_shaders(ctx
, container
, maxCount
, count
, obj
);
1378 _mesa_GetAttachedShaders(GLuint program
, GLsizei maxCount
,
1379 GLsizei
*count
, GLuint
*obj
)
1381 GET_CURRENT_CONTEXT(ctx
);
1382 get_attached_shaders(ctx
, program
, maxCount
, count
, obj
);
1387 _mesa_GetInfoLogARB(GLhandleARB object
, GLsizei maxLength
, GLsizei
* length
,
1388 GLcharARB
* infoLog
)
1390 GET_CURRENT_CONTEXT(ctx
);
1391 if (is_program(ctx
, object
)) {
1392 get_program_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1394 else if (is_shader(ctx
, object
)) {
1395 get_shader_info_log(ctx
, object
, maxLength
, length
, infoLog
);
1398 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glGetInfoLogARB");
1404 _mesa_GetObjectParameterivARB(GLhandleARB object
, GLenum pname
, GLint
*params
)
1406 GET_CURRENT_CONTEXT(ctx
);
1407 /* Implement in terms of GetProgramiv, GetShaderiv */
1408 if (is_program(ctx
, object
)) {
1409 if (pname
== GL_OBJECT_TYPE_ARB
) {
1410 *params
= GL_PROGRAM_OBJECT_ARB
;
1413 get_programiv(ctx
, object
, pname
, params
);
1416 else if (is_shader(ctx
, object
)) {
1417 if (pname
== GL_OBJECT_TYPE_ARB
) {
1418 *params
= GL_SHADER_OBJECT_ARB
;
1421 get_shaderiv(ctx
, object
, pname
, params
);
1425 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetObjectParameterivARB");
1431 _mesa_GetObjectParameterfvARB(GLhandleARB object
, GLenum pname
,
1434 GLint iparams
[1] = {0}; /* XXX is one element enough? */
1435 _mesa_GetObjectParameterivARB(object
, pname
, iparams
);
1436 params
[0] = (GLfloat
) iparams
[0];
1441 _mesa_GetProgramiv(GLuint program
, GLenum pname
, GLint
*params
)
1443 GET_CURRENT_CONTEXT(ctx
);
1444 get_programiv(ctx
, program
, pname
, params
);
1449 _mesa_GetShaderiv(GLuint shader
, GLenum pname
, GLint
*params
)
1451 GET_CURRENT_CONTEXT(ctx
);
1452 get_shaderiv(ctx
, shader
, pname
, params
);
1457 _mesa_GetProgramInfoLog(GLuint program
, GLsizei bufSize
,
1458 GLsizei
*length
, GLchar
*infoLog
)
1460 GET_CURRENT_CONTEXT(ctx
);
1461 get_program_info_log(ctx
, program
, bufSize
, length
, infoLog
);
1466 _mesa_GetShaderInfoLog(GLuint shader
, GLsizei bufSize
,
1467 GLsizei
*length
, GLchar
*infoLog
)
1469 GET_CURRENT_CONTEXT(ctx
);
1470 get_shader_info_log(ctx
, shader
, bufSize
, length
, infoLog
);
1475 _mesa_GetShaderSource(GLhandleARB shader
, GLsizei maxLength
,
1476 GLsizei
*length
, GLcharARB
*sourceOut
)
1478 GET_CURRENT_CONTEXT(ctx
);
1479 get_shader_source(ctx
, shader
, maxLength
, length
, sourceOut
);
1483 GLhandleARB GLAPIENTRY
1484 _mesa_GetHandleARB(GLenum pname
)
1486 GET_CURRENT_CONTEXT(ctx
);
1487 return get_handle(ctx
, pname
);
1491 GLboolean GLAPIENTRY
1492 _mesa_IsProgram(GLuint name
)
1494 GET_CURRENT_CONTEXT(ctx
);
1495 return is_program(ctx
, name
);
1499 GLboolean GLAPIENTRY
1500 _mesa_IsShader(GLuint name
)
1502 GET_CURRENT_CONTEXT(ctx
);
1503 return is_shader(ctx
, name
);
1508 _mesa_LinkProgram(GLhandleARB programObj
)
1510 GET_CURRENT_CONTEXT(ctx
);
1511 link_program(ctx
, programObj
);
1514 #if defined(HAVE_SHA1)
1516 * Generate a SHA-1 hash value string for given source string.
1519 generate_sha1(const char *source
, char sha_str
[64])
1521 unsigned char sha
[20];
1522 _mesa_sha1_compute(source
, strlen(source
), sha
);
1523 _mesa_sha1_format(sha_str
, sha
);
1527 * Construct a full path for shader replacement functionality using
1530 * <path>/<stage prefix>_<CHECKSUM>.glsl
1533 construct_name(const gl_shader_stage stage
, const char *source
,
1534 const char *path
, char *name
, unsigned length
)
1537 static const char *types
[] = {
1538 "VS", "TC", "TE", "GS", "FS", "CS",
1541 generate_sha1(source
, sha
);
1542 _mesa_snprintf(name
, length
, "%s/%s_%s.glsl", path
, types
[stage
],
1547 * Write given shader source to a file in MESA_SHADER_DUMP_PATH.
1550 dump_shader(const gl_shader_stage stage
, const char *source
)
1552 char name
[PATH_MAX
];
1553 static bool path_exists
= true;
1560 dump_path
= getenv("MESA_SHADER_DUMP_PATH");
1562 path_exists
= false;
1566 construct_name(stage
, source
, dump_path
, name
, PATH_MAX
);
1568 f
= fopen(name
, "w");
1573 GET_CURRENT_CONTEXT(ctx
);
1574 _mesa_warning(ctx
, "could not open %s for dumping shader (%s)", name
,
1580 * Read shader source code from a file.
1581 * Useful for debugging to override an app's shader.
1584 read_shader(const gl_shader_stage stage
, const char *source
)
1586 char name
[PATH_MAX
];
1588 static bool path_exists
= true;
1589 int len
, shader_size
= 0;
1596 read_path
= getenv("MESA_SHADER_READ_PATH");
1598 path_exists
= false;
1602 construct_name(stage
, source
, read_path
, name
, PATH_MAX
);
1604 f
= fopen(name
, "r");
1608 /* allocate enough room for the entire shader */
1609 fseek(f
, 0, SEEK_END
);
1610 shader_size
= ftell(f
);
1612 assert(shader_size
);
1614 /* add one for terminating zero */
1617 buffer
= malloc(shader_size
);
1620 len
= fread(buffer
, 1, shader_size
, f
);
1627 #endif /* HAVE_SHA1 */
1630 * Called via glShaderSource() and glShaderSourceARB() API functions.
1631 * Basically, concatenate the source code strings into one long string
1632 * and pass it to _mesa_shader_source().
1635 _mesa_ShaderSource(GLhandleARB shaderObj
, GLsizei count
,
1636 const GLcharARB
* const * string
, const GLint
* length
)
1638 GET_CURRENT_CONTEXT(ctx
);
1640 GLsizei i
, totalLength
;
1642 struct gl_shader
*sh
;
1644 #if defined(HAVE_SHA1)
1645 GLcharARB
*replacement
;
1646 #endif /* HAVE_SHA1 */
1648 sh
= _mesa_lookup_shader_err(ctx
, shaderObj
, "glShaderSourceARB");
1652 if (string
== NULL
) {
1653 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderSourceARB");
1658 * This array holds offsets of where the appropriate string ends, thus the
1659 * last element will be set to the total length of the source code.
1661 offsets
= malloc(count
* sizeof(GLint
));
1662 if (offsets
== NULL
) {
1663 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1667 for (i
= 0; i
< count
; i
++) {
1668 if (string
[i
] == NULL
) {
1669 free((GLvoid
*) offsets
);
1670 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1671 "glShaderSourceARB(null string)");
1674 if (length
== NULL
|| length
[i
] < 0)
1675 offsets
[i
] = strlen(string
[i
]);
1677 offsets
[i
] = length
[i
];
1678 /* accumulate string lengths */
1680 offsets
[i
] += offsets
[i
- 1];
1683 /* Total length of source string is sum off all strings plus two.
1684 * One extra byte for terminating zero, another extra byte to silence
1685 * valgrind warnings in the parser/grammer code.
1687 totalLength
= offsets
[count
- 1] + 2;
1688 source
= malloc(totalLength
* sizeof(GLcharARB
));
1689 if (source
== NULL
) {
1690 free((GLvoid
*) offsets
);
1691 _mesa_error(ctx
, GL_OUT_OF_MEMORY
, "glShaderSourceARB");
1695 for (i
= 0; i
< count
; i
++) {
1696 GLint start
= (i
> 0) ? offsets
[i
- 1] : 0;
1697 memcpy(source
+ start
, string
[i
],
1698 (offsets
[i
] - start
) * sizeof(GLcharARB
));
1700 source
[totalLength
- 1] = '\0';
1701 source
[totalLength
- 2] = '\0';
1703 #if defined(HAVE_SHA1)
1704 /* Dump original shader source to MESA_SHADER_DUMP_PATH and replace
1705 * if corresponding entry found from MESA_SHADER_READ_PATH.
1707 dump_shader(sh
->Stage
, source
);
1709 replacement
= read_shader(sh
->Stage
, source
);
1712 source
= replacement
;
1714 #endif /* HAVE_SHA1 */
1716 shader_source(sh
, source
);
1723 _mesa_UseProgram(GLhandleARB program
)
1725 GET_CURRENT_CONTEXT(ctx
);
1726 struct gl_shader_program
*shProg
;
1728 if (_mesa_is_xfb_active_and_unpaused(ctx
)) {
1729 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1730 "glUseProgram(transform feedback active)");
1735 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glUseProgram");
1739 if (!shProg
->LinkStatus
) {
1740 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1741 "glUseProgram(program %u not linked)", program
);
1746 if (ctx
->_Shader
->Flags
& GLSL_USE_PROG
) {
1747 print_shader_info(shProg
);
1754 /* The ARB_separate_shader_object spec says:
1756 * "The executable code for an individual shader stage is taken from
1757 * the current program for that stage. If there is a current program
1758 * object established by UseProgram, that program is considered current
1759 * for all stages. Otherwise, if there is a bound program pipeline
1760 * object (section 2.14.PPO), the program bound to the appropriate
1761 * stage of the pipeline object is considered current."
1764 /* Attach shader state to the binding point */
1765 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, &ctx
->Shader
);
1766 /* Update the program */
1767 _mesa_use_program(ctx
, shProg
);
1769 /* Must be done first: detach the progam */
1770 _mesa_use_program(ctx
, shProg
);
1771 /* Unattach shader_state binding point */
1772 _mesa_reference_pipeline_object(ctx
, &ctx
->_Shader
, ctx
->Pipeline
.Default
);
1773 /* If a pipeline was bound, rebind it */
1774 if (ctx
->Pipeline
.Current
) {
1775 _mesa_BindProgramPipeline(ctx
->Pipeline
.Current
->Name
);
1782 _mesa_ValidateProgram(GLhandleARB program
)
1784 GET_CURRENT_CONTEXT(ctx
);
1785 validate_program(ctx
, program
);
1790 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1793 _mesa_GetShaderPrecisionFormat(GLenum shadertype
, GLenum precisiontype
,
1794 GLint
* range
, GLint
* precision
)
1796 const struct gl_program_constants
*limits
;
1797 const struct gl_precision
*p
;
1798 GET_CURRENT_CONTEXT(ctx
);
1800 switch (shadertype
) {
1801 case GL_VERTEX_SHADER
:
1802 limits
= &ctx
->Const
.Program
[MESA_SHADER_VERTEX
];
1804 case GL_FRAGMENT_SHADER
:
1805 limits
= &ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
];
1808 _mesa_error(ctx
, GL_INVALID_ENUM
,
1809 "glGetShaderPrecisionFormat(shadertype)");
1813 switch (precisiontype
) {
1815 p
= &limits
->LowFloat
;
1817 case GL_MEDIUM_FLOAT
:
1818 p
= &limits
->MediumFloat
;
1821 p
= &limits
->HighFloat
;
1824 p
= &limits
->LowInt
;
1827 p
= &limits
->MediumInt
;
1830 p
= &limits
->HighInt
;
1833 _mesa_error(ctx
, GL_INVALID_ENUM
,
1834 "glGetShaderPrecisionFormat(precisiontype)");
1838 range
[0] = p
->RangeMin
;
1839 range
[1] = p
->RangeMax
;
1840 precision
[0] = p
->Precision
;
1845 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1848 _mesa_ReleaseShaderCompiler(void)
1850 _mesa_destroy_shader_compiler_caches();
1855 * For OpenGL ES 2.0, GL_ARB_ES2_compatibility
1858 _mesa_ShaderBinary(GLint n
, const GLuint
* shaders
, GLenum binaryformat
,
1859 const void* binary
, GLint length
)
1861 GET_CURRENT_CONTEXT(ctx
);
1863 (void) binaryformat
;
1866 /* Page 68, section 7.2 'Shader Binaries" of the of the OpenGL ES 3.1, and
1867 * page 88 of the OpenGL 4.5 specs state:
1869 * "An INVALID_VALUE error is generated if count or length is negative.
1870 * An INVALID_ENUM error is generated if binaryformat is not a supported
1871 * format returned in SHADER_BINARY_FORMATS."
1873 if (n
< 0 || length
< 0) {
1874 _mesa_error(ctx
, GL_INVALID_VALUE
, "glShaderBinary(count or length < 0)");
1878 _mesa_error(ctx
, GL_INVALID_ENUM
, "glShaderBinary(format)");
1883 _mesa_GetProgramBinary(GLuint program
, GLsizei bufSize
, GLsizei
*length
,
1884 GLenum
*binaryFormat
, GLvoid
*binary
)
1886 struct gl_shader_program
*shProg
;
1887 GLsizei length_dummy
;
1888 GET_CURRENT_CONTEXT(ctx
);
1891 _mesa_error(ctx
, GL_INVALID_VALUE
, "glGetProgramBinary(bufSize < 0)");
1895 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glGetProgramBinary");
1899 /* The ARB_get_program_binary spec says:
1901 * "If <length> is NULL, then no length is returned."
1903 * Ensure that length always points to valid storage to avoid multiple NULL
1904 * pointer checks below.
1907 length
= &length_dummy
;
1910 /* The ARB_get_program_binary spec says:
1912 * "When a program object's LINK_STATUS is FALSE, its program binary
1913 * length is zero, and a call to GetProgramBinary will generate an
1914 * INVALID_OPERATION error.
1916 if (!shProg
->LinkStatus
) {
1917 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1918 "glGetProgramBinary(program %u not linked)",
1925 _mesa_error(ctx
, GL_INVALID_OPERATION
,
1926 "glGetProgramBinary(driver supports zero binary formats)");
1928 (void) binaryFormat
;
1933 _mesa_ProgramBinary(GLuint program
, GLenum binaryFormat
,
1934 const GLvoid
*binary
, GLsizei length
)
1936 struct gl_shader_program
*shProg
;
1937 GET_CURRENT_CONTEXT(ctx
);
1939 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, "glProgramBinary");
1943 (void) binaryFormat
;
1946 /* Section 2.3.1 (Errors) of the OpenGL 4.5 spec says:
1948 * "If a negative number is provided where an argument of type sizei or
1949 * sizeiptr is specified, an INVALID_VALUE error is generated."
1952 _mesa_error(ctx
, GL_INVALID_VALUE
, "glProgramBinary(length < 0)");
1956 /* The ARB_get_program_binary spec says:
1958 * "<binaryFormat> and <binary> must be those returned by a previous
1959 * call to GetProgramBinary, and <length> must be the length of the
1960 * program binary as returned by GetProgramBinary or GetProgramiv with
1961 * <pname> PROGRAM_BINARY_LENGTH. Loading the program binary will fail,
1962 * setting the LINK_STATUS of <program> to FALSE, if these conditions
1965 * Since any value of binaryFormat passed "is not one of those specified as
1966 * allowable for [this] command, an INVALID_ENUM error is generated."
1968 shProg
->LinkStatus
= GL_FALSE
;
1969 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramBinary");
1974 _mesa_ProgramParameteri(GLuint program
, GLenum pname
, GLint value
)
1976 struct gl_shader_program
*shProg
;
1977 GET_CURRENT_CONTEXT(ctx
);
1979 shProg
= _mesa_lookup_shader_program_err(ctx
, program
,
1980 "glProgramParameteri");
1985 case GL_PROGRAM_BINARY_RETRIEVABLE_HINT
:
1986 /* This enum isn't part of the OES extension for OpenGL ES 2.0, but it
1987 * is part of OpenGL ES 3.0. For the ES2 case, this function shouldn't
1988 * even be in the dispatch table, so we shouldn't need to expclicitly
1991 * On desktop, we ignore the 3.0+ requirement because it is silly.
1994 /* The ARB_get_program_binary extension spec says:
1996 * "An INVALID_VALUE error is generated if the <value> argument to
1997 * ProgramParameteri is not TRUE or FALSE."
1999 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2003 /* No need to notify the driver. Any changes will actually take effect
2004 * the next time the shader is linked.
2006 * The ARB_get_program_binary extension spec says:
2008 * "To indicate that a program binary is likely to be retrieved,
2009 * ProgramParameteri should be called with <pname>
2010 * PROGRAM_BINARY_RETRIEVABLE_HINT and <value> TRUE. This setting
2011 * will not be in effect until the next time LinkProgram or
2012 * ProgramBinary has been called successfully."
2014 * The resloution of issue 9 in the extension spec also says:
2016 * "The application may use the PROGRAM_BINARY_RETRIEVABLE_HINT hint
2017 * to indicate to the GL implementation that this program will
2018 * likely be saved with GetProgramBinary at some point. This will
2019 * give the GL implementation the opportunity to track any state
2020 * changes made to the program before being saved such that when it
2021 * is loaded again a recompile can be avoided."
2023 shProg
->BinaryRetreivableHint
= value
;
2026 case GL_PROGRAM_SEPARABLE
:
2027 /* Spec imply that the behavior is the same as ARB_get_program_binary
2028 * Chapter 7.3 Program Objects
2030 if (value
!= GL_TRUE
&& value
!= GL_FALSE
) {
2033 shProg
->SeparateShader
= value
;
2037 _mesa_error(ctx
, GL_INVALID_ENUM
, "glProgramParameteri(pname=%s)",
2038 _mesa_enum_to_string(pname
));
2043 _mesa_error(ctx
, GL_INVALID_VALUE
,
2044 "glProgramParameteri(pname=%s, value=%d): "
2045 "value must be 0 or 1.",
2046 _mesa_enum_to_string(pname
),
2052 _mesa_use_shader_program(struct gl_context
*ctx
, GLenum type
,
2053 struct gl_shader_program
*shProg
,
2054 struct gl_pipeline_object
*shTarget
)
2056 gl_shader_stage stage
= _mesa_shader_enum_to_shader_stage(type
);
2057 use_shader_program(ctx
, stage
, shProg
, shTarget
);
2059 if (ctx
->Driver
.UseProgram
)
2060 ctx
->Driver
.UseProgram(ctx
, shProg
);
2065 * Copy program-specific data generated by linking from the gl_shader_program
2066 * object to a specific gl_program object.
2069 _mesa_copy_linked_program_data(gl_shader_stage type
,
2070 const struct gl_shader_program
*src
,
2071 struct gl_program
*dst
)
2074 case MESA_SHADER_VERTEX
:
2075 dst
->UsesClipDistanceOut
= src
->Vert
.UsesClipDistance
;
2077 case MESA_SHADER_TESS_CTRL
: {
2078 struct gl_tess_ctrl_program
*dst_tcp
=
2079 (struct gl_tess_ctrl_program
*) dst
;
2080 dst_tcp
->VerticesOut
= src
->TessCtrl
.VerticesOut
;
2083 case MESA_SHADER_TESS_EVAL
: {
2084 struct gl_tess_eval_program
*dst_tep
=
2085 (struct gl_tess_eval_program
*) dst
;
2086 dst_tep
->PrimitiveMode
= src
->TessEval
.PrimitiveMode
;
2087 dst_tep
->Spacing
= src
->TessEval
.Spacing
;
2088 dst_tep
->VertexOrder
= src
->TessEval
.VertexOrder
;
2089 dst_tep
->PointMode
= src
->TessEval
.PointMode
;
2090 dst
->UsesClipDistanceOut
= src
->TessEval
.UsesClipDistance
;
2093 case MESA_SHADER_GEOMETRY
: {
2094 struct gl_geometry_program
*dst_gp
= (struct gl_geometry_program
*) dst
;
2095 dst_gp
->VerticesIn
= src
->Geom
.VerticesIn
;
2096 dst_gp
->VerticesOut
= src
->Geom
.VerticesOut
;
2097 dst_gp
->Invocations
= src
->Geom
.Invocations
;
2098 dst_gp
->InputType
= src
->Geom
.InputType
;
2099 dst_gp
->OutputType
= src
->Geom
.OutputType
;
2100 dst
->UsesClipDistanceOut
= src
->Geom
.UsesClipDistance
;
2101 dst_gp
->UsesEndPrimitive
= src
->Geom
.UsesEndPrimitive
;
2102 dst_gp
->UsesStreams
= src
->Geom
.UsesStreams
;
2105 case MESA_SHADER_FRAGMENT
: {
2106 struct gl_fragment_program
*dst_fp
= (struct gl_fragment_program
*) dst
;
2107 dst_fp
->FragDepthLayout
= src
->FragDepthLayout
;
2110 case MESA_SHADER_COMPUTE
: {
2111 struct gl_compute_program
*dst_cp
= (struct gl_compute_program
*) dst
;
2113 for (i
= 0; i
< 3; i
++)
2114 dst_cp
->LocalSize
[i
] = src
->Comp
.LocalSize
[i
];
2123 * ARB_separate_shader_objects: Compile & Link Program
2126 _mesa_CreateShaderProgramv(GLenum type
, GLsizei count
,
2127 const GLchar
* const *strings
)
2129 GET_CURRENT_CONTEXT(ctx
);
2131 const GLuint shader
= create_shader(ctx
, type
);
2135 * According to OpenGL 4.5 and OpenGL ES 3.1 standards, section 7.3:
2136 * GL_INVALID_VALUE should be generated if count < 0
2139 _mesa_error(ctx
, GL_INVALID_VALUE
, "glCreateShaderProgram (count < 0)");
2144 _mesa_ShaderSource(shader
, count
, strings
, NULL
);
2146 compile_shader(ctx
, shader
);
2148 program
= create_shader_program(ctx
);
2150 struct gl_shader_program
*shProg
;
2151 struct gl_shader
*sh
;
2152 GLint compiled
= GL_FALSE
;
2154 shProg
= _mesa_lookup_shader_program(ctx
, program
);
2155 sh
= _mesa_lookup_shader(ctx
, shader
);
2157 shProg
->SeparateShader
= GL_TRUE
;
2159 get_shaderiv(ctx
, shader
, GL_COMPILE_STATUS
, &compiled
);
2161 attach_shader(ctx
, program
, shader
);
2162 link_program(ctx
, program
);
2163 detach_shader(ctx
, program
, shader
);
2167 if (active
-user
-defined
-varyings
-in
-linked
-program
) {
2168 append
-error
-to
-info
-log
;
2169 shProg
->LinkStatus
= GL_FALSE
;
2174 ralloc_strcat(&shProg
->InfoLog
, sh
->InfoLog
);
2177 delete_shader(ctx
, shader
);
2185 * For GL_ARB_tessellation_shader
2187 extern void GLAPIENTRY
2188 _mesa_PatchParameteri(GLenum pname
, GLint value
)
2190 GET_CURRENT_CONTEXT(ctx
);
2192 if (!_mesa_has_tessellation(ctx
)) {
2193 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameteri");
2197 if (pname
!= GL_PATCH_VERTICES
) {
2198 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameteri");
2202 if (value
<= 0 || value
> ctx
->Const
.MaxPatchVertices
) {
2203 _mesa_error(ctx
, GL_INVALID_VALUE
, "glPatchParameteri");
2207 ctx
->TessCtrlProgram
.patch_vertices
= value
;
2211 extern void GLAPIENTRY
2212 _mesa_PatchParameterfv(GLenum pname
, const GLfloat
*values
)
2214 GET_CURRENT_CONTEXT(ctx
);
2216 if (!_mesa_has_tessellation(ctx
)) {
2217 _mesa_error(ctx
, GL_INVALID_OPERATION
, "glPatchParameterfv");
2222 case GL_PATCH_DEFAULT_OUTER_LEVEL
:
2223 FLUSH_VERTICES(ctx
, 0);
2224 memcpy(ctx
->TessCtrlProgram
.patch_default_outer_level
, values
,
2225 4 * sizeof(GLfloat
));
2226 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2228 case GL_PATCH_DEFAULT_INNER_LEVEL
:
2229 FLUSH_VERTICES(ctx
, 0);
2230 memcpy(ctx
->TessCtrlProgram
.patch_default_inner_level
, values
,
2231 2 * sizeof(GLfloat
));
2232 ctx
->NewDriverState
|= ctx
->DriverFlags
.NewDefaultTessLevels
;
2235 _mesa_error(ctx
, GL_INVALID_ENUM
, "glPatchParameterfv");
2241 * ARB_shader_subroutine
2244 _mesa_GetSubroutineUniformLocation(GLuint program
, GLenum shadertype
,
2247 GET_CURRENT_CONTEXT(ctx
);
2248 const char *api_name
= "glGetSubroutineUniformLocation";
2249 struct gl_shader_program
*shProg
;
2250 GLenum resource_type
;
2251 gl_shader_stage stage
;
2253 if (!_mesa_has_shader_subroutine(ctx
)) {
2254 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2258 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2259 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2263 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2267 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2268 if (!shProg
->_LinkedShaders
[stage
]) {
2269 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2273 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2274 return _mesa_program_resource_location(shProg
, resource_type
, name
);
2278 _mesa_GetSubroutineIndex(GLuint program
, GLenum shadertype
,
2281 GET_CURRENT_CONTEXT(ctx
);
2282 const char *api_name
= "glGetSubroutineIndex";
2283 struct gl_shader_program
*shProg
;
2284 struct gl_program_resource
*res
;
2285 GLenum resource_type
;
2286 gl_shader_stage stage
;
2288 if (!_mesa_has_shader_subroutine(ctx
)) {
2289 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2293 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2294 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2298 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2302 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2303 if (!shProg
->_LinkedShaders
[stage
]) {
2304 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2308 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2309 res
= _mesa_program_resource_find_name(shProg
, resource_type
, name
, NULL
);
2311 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2315 return _mesa_program_resource_index(shProg
, res
);
2320 _mesa_GetActiveSubroutineUniformiv(GLuint program
, GLenum shadertype
,
2321 GLuint index
, GLenum pname
, GLint
*values
)
2323 GET_CURRENT_CONTEXT(ctx
);
2324 const char *api_name
= "glGetActiveSubroutineUniformiv";
2325 struct gl_shader_program
*shProg
;
2326 struct gl_shader
*sh
;
2327 gl_shader_stage stage
;
2328 struct gl_program_resource
*res
;
2329 const struct gl_uniform_storage
*uni
;
2330 GLenum resource_type
;
2333 if (!_mesa_has_shader_subroutine(ctx
)) {
2334 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2338 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2339 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2343 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2347 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2348 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2350 sh
= shProg
->_LinkedShaders
[stage
];
2352 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2357 case GL_NUM_COMPATIBLE_SUBROUTINES
: {
2358 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2361 values
[0] = uni
->num_compatible_subroutines
;
2365 case GL_COMPATIBLE_SUBROUTINES
: {
2366 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2370 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2371 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2372 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2373 if (fn
->types
[j
] == uni
->type
) {
2374 values
[count
++] = i
;
2382 case GL_UNIFORM_SIZE
:
2383 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2386 values
[0] = uni
->array_elements
? uni
->array_elements
: 1;
2389 case GL_UNIFORM_NAME_LENGTH
:
2390 res
= _mesa_program_resource_find_index(shProg
, resource_type
, index
);
2392 values
[0] = strlen(_mesa_program_resource_name(res
)) + 1
2393 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);;
2397 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2404 _mesa_GetActiveSubroutineUniformName(GLuint program
, GLenum shadertype
,
2405 GLuint index
, GLsizei bufsize
,
2406 GLsizei
*length
, GLchar
*name
)
2408 GET_CURRENT_CONTEXT(ctx
);
2409 const char *api_name
= "glGetActiveSubroutineUniformName";
2410 struct gl_shader_program
*shProg
;
2411 GLenum resource_type
;
2412 gl_shader_stage stage
;
2414 if (!_mesa_has_shader_subroutine(ctx
)) {
2415 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2419 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2420 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2424 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2428 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2429 if (!shProg
->_LinkedShaders
[stage
]) {
2430 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2434 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2435 /* get program resource name */
2436 _mesa_get_program_resource_name(shProg
, resource_type
,
2438 length
, name
, api_name
);
2443 _mesa_GetActiveSubroutineName(GLuint program
, GLenum shadertype
,
2444 GLuint index
, GLsizei bufsize
,
2445 GLsizei
*length
, GLchar
*name
)
2447 GET_CURRENT_CONTEXT(ctx
);
2448 const char *api_name
= "glGetActiveSubroutineName";
2449 struct gl_shader_program
*shProg
;
2450 GLenum resource_type
;
2451 gl_shader_stage stage
;
2453 if (!_mesa_has_shader_subroutine(ctx
)) {
2454 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2458 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2459 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2463 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2467 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2468 if (!shProg
->_LinkedShaders
[stage
]) {
2469 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2472 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2473 _mesa_get_program_resource_name(shProg
, resource_type
,
2475 length
, name
, api_name
);
2480 _mesa_UniformSubroutinesuiv(GLenum shadertype
, GLsizei count
,
2481 const GLuint
*indices
)
2483 GET_CURRENT_CONTEXT(ctx
);
2484 const char *api_name
= "glUniformSubroutinesuiv";
2485 struct gl_shader_program
*shProg
;
2486 struct gl_shader
*sh
;
2487 gl_shader_stage stage
;
2490 if (!_mesa_has_shader_subroutine(ctx
)) {
2491 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2495 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2496 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2500 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2501 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2503 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2507 sh
= shProg
->_LinkedShaders
[stage
];
2509 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2513 if (count
!= sh
->NumSubroutineUniformRemapTable
) {
2514 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2520 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2521 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2524 for (j
= i
; j
< i
+ uni_count
; j
++) {
2525 struct gl_subroutine_function
*subfn
;
2526 if (indices
[j
] >= sh
->NumSubroutineFunctions
) {
2527 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2531 subfn
= &sh
->SubroutineFunctions
[indices
[j
]];
2532 for (k
= 0; k
< subfn
->num_compat_types
; k
++) {
2533 if (subfn
->types
[k
] == uni
->type
)
2536 if (k
== subfn
->num_compat_types
) {
2537 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2544 FLUSH_VERTICES(ctx
, _NEW_PROGRAM_CONSTANTS
);
2547 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2548 int uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2550 memcpy(&uni
->storage
[0], &indices
[i
],
2551 sizeof(GLuint
) * uni_count
);
2553 uni
->initialized
= true;
2554 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2561 _mesa_GetUniformSubroutineuiv(GLenum shadertype
, GLint location
,
2564 GET_CURRENT_CONTEXT(ctx
);
2565 const char *api_name
= "glGetUniformSubroutineuiv";
2566 struct gl_shader_program
*shProg
;
2567 struct gl_shader
*sh
;
2568 gl_shader_stage stage
;
2570 if (!_mesa_has_shader_subroutine(ctx
)) {
2571 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2575 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2576 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2580 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2581 shProg
= ctx
->_Shader
->CurrentProgram
[stage
];
2583 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2587 sh
= shProg
->_LinkedShaders
[stage
];
2589 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2593 if (location
>= sh
->NumSubroutineUniformRemapTable
) {
2594 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s", api_name
);
2599 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[location
];
2600 int offset
= location
- uni
->opaque
[stage
].index
;
2601 memcpy(params
, &uni
->storage
[offset
],
2608 _mesa_GetProgramStageiv(GLuint program
, GLenum shadertype
,
2609 GLenum pname
, GLint
*values
)
2611 GET_CURRENT_CONTEXT(ctx
);
2612 const char *api_name
= "glGetProgramStageiv";
2613 struct gl_shader_program
*shProg
;
2614 struct gl_shader
*sh
;
2615 gl_shader_stage stage
;
2617 if (!_mesa_has_shader_subroutine(ctx
)) {
2618 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2622 if (!_mesa_validate_shader_target(ctx
, shadertype
)) {
2623 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2627 shProg
= _mesa_lookup_shader_program_err(ctx
, program
, api_name
);
2631 stage
= _mesa_shader_enum_to_shader_stage(shadertype
);
2632 sh
= shProg
->_LinkedShaders
[stage
];
2634 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s", api_name
);
2639 case GL_ACTIVE_SUBROUTINES
:
2640 values
[0] = sh
->NumSubroutineFunctions
;
2642 case GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS
:
2643 values
[0] = sh
->NumSubroutineUniformRemapTable
;
2645 case GL_ACTIVE_SUBROUTINE_UNIFORMS
:
2646 values
[0] = sh
->NumSubroutineUniformTypes
;
2648 case GL_ACTIVE_SUBROUTINE_MAX_LENGTH
:
2652 GLenum resource_type
;
2653 struct gl_program_resource
*res
;
2655 resource_type
= _mesa_shader_stage_to_subroutine(stage
);
2656 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2657 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2659 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1;
2664 values
[0] = max_len
;
2667 case GL_ACTIVE_SUBROUTINE_UNIFORM_MAX_LENGTH
:
2671 GLenum resource_type
;
2672 struct gl_program_resource
*res
;
2674 resource_type
= _mesa_shader_stage_to_subroutine_uniform(stage
);
2675 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2676 res
= _mesa_program_resource_find_index(shProg
, resource_type
, i
);
2678 const GLint len
= strlen(_mesa_program_resource_name(res
)) + 1
2679 + ((_mesa_program_resource_array_size(res
) != 0) ? 3 : 0);
2685 values
[0] = max_len
;
2689 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s", api_name
);
2696 find_compat_subroutine(struct gl_shader
*sh
, const struct glsl_type
*type
)
2700 for (i
= 0; i
< sh
->NumSubroutineFunctions
; i
++) {
2701 struct gl_subroutine_function
*fn
= &sh
->SubroutineFunctions
[i
];
2702 for (j
= 0; j
< fn
->num_compat_types
; j
++) {
2703 if (fn
->types
[j
] == type
)
2711 _mesa_shader_init_subroutine_defaults(struct gl_shader
*sh
)
2715 for (i
= 0; i
< sh
->NumSubroutineUniformRemapTable
; i
++) {
2716 struct gl_uniform_storage
*uni
= sh
->SubroutineUniformRemapTable
[i
];
2722 uni_count
= uni
->array_elements
? uni
->array_elements
: 1;
2723 val
= find_compat_subroutine(sh
, uni
->type
);
2725 for (j
= 0; j
< uni_count
; j
++)
2726 memcpy(&uni
->storage
[j
], &val
, sizeof(int));
2727 uni
->initialized
= true;
2728 _mesa_propagate_uniforms_to_driver_storage(uni
, 0, uni_count
);
2733 _mesa_shader_program_init_subroutine_defaults(struct gl_shader_program
*shProg
)
2740 for (i
= 0; i
< MESA_SHADER_STAGES
; i
++) {
2741 if (!shProg
->_LinkedShaders
[i
])
2744 _mesa_shader_init_subroutine_defaults(shProg
->_LinkedShaders
[i
]);