2 * Copyright (C) 2010 Brian Paul All Rights Reserved.
3 * Copyright (C) 2010 Intel Corporation
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included
13 * in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
19 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * Author: Kristian Høgsberg <krh@bitplanet.net>
29 #include "extensions.h"
32 #include "mfeatures.h"
35 #include "texcompress.h"
36 #include "framebuffer.h"
38 /* This is a table driven implemetation of the glGet*v() functions.
39 * The basic idea is that most getters just look up an int somewhere
40 * in struct gl_context and then convert it to a bool or float according to
41 * which of glGetIntegerv() glGetBooleanv() etc is being called.
42 * Instead of generating code to do this, we can just record the enum
43 * value and the offset into struct gl_context in an array of structs. Then
44 * in glGet*(), we lookup the struct for the enum in question, and use
45 * the offset to get the int we need.
47 * Sometimes we need to look up a float, a boolean, a bit in a
48 * bitfield, a matrix or other types instead, so we need to track the
49 * type of the value in struct gl_context. And sometimes the value isn't in
50 * struct gl_context but in the drawbuffer, the array object, current texture
51 * unit, or maybe it's a computed value. So we need to also track
52 * where or how to find the value. Finally, we sometimes need to
53 * check that one of a number of extensions are enabled, the GL
54 * version or flush or call _mesa_update_state(). This is done by
55 * attaching optional extra information to the value description
56 * struct, it's sort of like an array of opcodes that describe extra
59 * Putting all this together we end up with struct value_desc below,
60 * and with a couple of macros to help, the table of struct value_desc
61 * is about as concise as the specification in the old python script.
64 #define FLOAT_TO_BOOLEAN(X) ( (X) ? GL_TRUE : GL_FALSE )
65 #define FLOAT_TO_FIXED(F) ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \
66 ((F) * 65536.0f < INT_MIN) ? INT_MIN : \
67 (GLint) ((F) * 65536.0f) )
69 #define INT_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
70 #define INT_TO_FIXED(I) ( ((I) > SHRT_MAX) ? INT_MAX : \
71 ((I) < SHRT_MIN) ? INT_MIN : \
72 (GLint) ((I) * 65536) )
74 #define INT64_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
75 #define INT64_TO_INT(I) ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )
77 #define BOOLEAN_TO_INT(B) ( (GLint) (B) )
78 #define BOOLEAN_TO_INT64(B) ( (GLint64) (B) )
79 #define BOOLEAN_TO_FLOAT(B) ( (B) ? 1.0F : 0.0F )
80 #define BOOLEAN_TO_FIXED(B) ( (GLint) ((B) ? 1 : 0) << 16 )
82 #define ENUM_TO_INT64(E) ( (GLint64) (E) )
83 #define ENUM_TO_FIXED(E) (E)
118 enum value_location
{
136 EXTRA_NEW_FRAG_CLAMP
,
137 EXTRA_VALID_DRAW_BUFFER
,
138 EXTRA_VALID_TEXTURE_UNIT
,
139 EXTRA_VALID_CLIP_DISTANCE
,
144 #define NO_EXTRA NULL
149 GLubyte location
; /**< enum value_location */
150 GLubyte type
; /**< enum value_type */
157 GLfloat value_float_4
[4];
158 GLmatrix
*value_matrix
;
160 GLint value_int_4
[4];
164 /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
168 GLboolean value_bool
;
171 #define BUFFER_FIELD(field, type) \
172 LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
173 #define CONTEXT_FIELD(field, type) \
174 LOC_CONTEXT, type, offsetof(struct gl_context, field)
175 #define ARRAY_FIELD(field, type) \
176 LOC_ARRAY, type, offsetof(struct gl_array_object, field)
177 #undef CONST /* already defined through windows.h */
178 #define CONST(value) \
179 LOC_CONTEXT, TYPE_CONST, value
181 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
182 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
183 #define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
185 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
186 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
187 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
188 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
189 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
190 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
191 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
192 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
193 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
194 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
195 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
196 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
197 #define CONTEXT_BIT6(field) CONTEXT_FIELD(field, TYPE_BIT_6)
198 #define CONTEXT_BIT7(field) CONTEXT_FIELD(field, TYPE_BIT_7)
199 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
200 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
201 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
202 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
203 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
204 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
206 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
207 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
208 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
211 offsetof(struct gl_extensions, f)
213 #define EXTRA_EXT(e) \
214 static const int extra_##e[] = { \
218 #define EXTRA_EXT2(e1, e2) \
219 static const int extra_##e1##_##e2[] = { \
220 EXT(e1), EXT(e2), EXTRA_END \
223 /* The 'extra' mechanism is a way to specify extra checks (such as
224 * extensions or specific gl versions) or actions (flush current, new
225 * buffers) that we need to do before looking up an enum. We need to
226 * declare them all up front so we can refer to them in the value_desc
229 static const int extra_new_buffers
[] = {
234 static const int extra_new_frag_clamp
[] = {
235 EXTRA_NEW_FRAG_CLAMP
,
239 static const int extra_valid_draw_buffer
[] = {
240 EXTRA_VALID_DRAW_BUFFER
,
244 static const int extra_valid_texture_unit
[] = {
245 EXTRA_VALID_TEXTURE_UNIT
,
249 static const int extra_valid_clip_distance
[] = {
250 EXTRA_VALID_CLIP_DISTANCE
,
254 static const int extra_flush_current_valid_texture_unit
[] = {
256 EXTRA_VALID_TEXTURE_UNIT
,
260 static const int extra_flush_current
[] = {
265 static const int extra_EXT_secondary_color_flush_current
[] = {
266 EXT(EXT_secondary_color
),
271 static const int extra_EXT_fog_coord_flush_current
[] = {
277 static const int extra_EXT_texture_integer
[] = {
278 EXT(EXT_texture_integer
),
282 static const int extra_GLSL_130
[] = {
287 static const int extra_texture_buffer_object
[] = {
290 EXT(ARB_texture_buffer_object
),
294 static const int extra_ARB_transform_feedback2_api_es3
[] = {
295 EXT(ARB_transform_feedback2
),
300 static const int extra_ARB_uniform_buffer_object_and_geometry_shader
[] = {
301 EXT(ARB_uniform_buffer_object
),
302 EXT(ARB_geometry_shader4
),
306 static const int extra_ARB_ES2_compatibility_api_es2
[] = {
307 EXT(ARB_ES2_compatibility
),
312 static const int extra_ARB_ES3_compatibility_api_es3
[] = {
313 EXT(ARB_ES3_compatibility
),
318 EXTRA_EXT(ARB_texture_cube_map
);
319 EXTRA_EXT(MESA_texture_array
);
320 EXTRA_EXT2(EXT_secondary_color
, ARB_vertex_program
);
321 EXTRA_EXT(EXT_secondary_color
);
322 EXTRA_EXT(EXT_fog_coord
);
323 EXTRA_EXT(NV_fog_distance
);
324 EXTRA_EXT(EXT_texture_filter_anisotropic
);
325 EXTRA_EXT(NV_point_sprite
);
326 EXTRA_EXT(NV_texture_rectangle
);
327 EXTRA_EXT(EXT_stencil_two_side
);
328 EXTRA_EXT(EXT_depth_bounds_test
);
329 EXTRA_EXT(ARB_depth_clamp
);
330 EXTRA_EXT(ATI_fragment_shader
);
331 EXTRA_EXT(EXT_framebuffer_blit
);
332 EXTRA_EXT(ARB_shader_objects
);
333 EXTRA_EXT(EXT_provoking_vertex
);
334 EXTRA_EXT(ARB_fragment_shader
);
335 EXTRA_EXT(ARB_fragment_program
);
336 EXTRA_EXT2(ARB_framebuffer_object
, EXT_framebuffer_multisample
);
337 EXTRA_EXT(EXT_framebuffer_object
);
338 EXTRA_EXT(ARB_seamless_cube_map
);
340 EXTRA_EXT(ARB_vertex_shader
);
341 EXTRA_EXT(EXT_transform_feedback
);
342 EXTRA_EXT(ARB_transform_feedback3
);
343 EXTRA_EXT(EXT_pixel_buffer_object
);
344 EXTRA_EXT(ARB_vertex_program
);
345 EXTRA_EXT2(NV_point_sprite
, ARB_point_sprite
);
346 EXTRA_EXT2(ARB_vertex_program
, ARB_fragment_program
);
347 EXTRA_EXT(ARB_geometry_shader4
);
348 EXTRA_EXT(ARB_color_buffer_float
);
349 EXTRA_EXT(EXT_framebuffer_sRGB
);
350 EXTRA_EXT(OES_EGL_image_external
);
351 EXTRA_EXT(ARB_blend_func_extended
);
352 EXTRA_EXT(ARB_uniform_buffer_object
);
353 EXTRA_EXT(ARB_timer_query
);
354 EXTRA_EXT(ARB_map_buffer_alignment
);
355 EXTRA_EXT(ARB_texture_cube_map_array
);
356 EXTRA_EXT(ARB_texture_buffer_range
);
357 EXTRA_EXT(ARB_texture_multisample
);
360 extra_NV_primitive_restart
[] = {
361 EXT(NV_primitive_restart
),
365 static const int extra_version_30
[] = { EXTRA_VERSION_30
, EXTRA_END
};
366 static const int extra_version_31
[] = { EXTRA_VERSION_31
, EXTRA_END
};
367 static const int extra_version_32
[] = { EXTRA_VERSION_32
, EXTRA_END
};
369 static const int extra_gl30_es3
[] = {
376 extra_ARB_vertex_program_api_es2
[] = {
377 EXT(ARB_vertex_program
),
382 /* The ReadBuffer get token is valid under either full GL or under
383 * GLES2 if the NV_read_buffer extension is available. */
385 extra_NV_read_buffer_api_gl
[] = {
391 /* This is the big table describing all the enums we accept in
392 * glGet*v(). The table is partitioned into six parts: enums
393 * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
394 * between OpenGL and GLES, enums exclusive to GLES, etc for the
395 * remaining combinations. To look up the enums valid in a given API
396 * we will use a hash table specific to that API. These tables are in
397 * turn generated at build time and included through get_hash.h.
398 * The different sections are guarded by #if FEATURE_GL etc to make
399 * sure we only compile in the enums we may need. */
401 #include "get_hash.h"
403 /* All we need now is a way to look up the value struct from the enum.
404 * The code generated by gcc for the old generated big switch
405 * statement is a big, balanced, open coded if/else tree, essentially
406 * an unrolled binary search. It would be natural to sort the new
407 * enum table and use bsearch(), but we will use a read-only hash
408 * table instead. bsearch() has a nice guaranteed worst case
409 * performance, but we're also guaranteed to hit that worst case
410 * (log2(n) iterations) for about half the enums. Instead, using an
411 * open addressing hash table, we can find the enum on the first try
412 * for 80% of the enums, 1 collision for 10% and never more than 5
413 * collisions for any enum (typical numbers). And the code is very
414 * simple, even though it feels a little magic. */
418 print_table_stats(int api
)
420 int i
, j
, collisions
[11], count
, hash
, mask
;
421 const struct value_desc
*d
;
422 const char *api_names
[] = {
423 [API_OPENGL_COMPAT
] = "GL",
424 [API_OPENGL_CORE
] = "GL_CORE",
425 [API_OPENGLES
] = "GLES",
426 [API_OPENGLES2
] = "GLES2",
428 const char *api_name
;
430 api_name
= api
< Elements(api_names
) ? api_names
[api
] : "N/A";
432 mask
= Elements(table(api
)) - 1;
433 memset(collisions
, 0, sizeof collisions
);
435 for (i
= 0; i
< Elements(table(api
)); i
++) {
439 d
= &values
[table(api
)[i
]];
440 hash
= (d
->pname
* prime_factor
);
443 if (values
[table(api
)[hash
& mask
]].pname
== d
->pname
)
455 printf("number of enums for %s: %d (total %ld)\n",
456 api_name
, count
, Elements(values
));
457 for (i
= 0; i
< Elements(collisions
) - 1; i
++)
458 if (collisions
[i
] > 0)
459 printf(" %d enums with %d %scollisions\n",
460 collisions
[i
], i
, i
== 10 ? "or more " : "");
465 * Initialize the enum hash for a given API
467 * This is called from one_time_init() to insert the enum values that
468 * are valid for the API in question into the enum hash table.
470 * \param the current context, for determining the API in question
472 void _mesa_init_get_hash(struct gl_context
*ctx
)
480 * Handle irregular enums
482 * Some values don't conform to the "well-known type at context
483 * pointer + offset" pattern, so we have this function to catch all
484 * the corner cases. Typically, it's a computed value or a one-off
485 * pointer to a custom struct or something.
487 * In this case we can't return a pointer to the value, so we'll have
488 * to use the temporary variable 'v' declared back in the calling
489 * glGet*v() function to store the result.
491 * \param ctx the current context
492 * \param d the struct value_desc that describes the enum
493 * \param v pointer to the tmp declared in the calling glGet*v() function
496 find_custom_value(struct gl_context
*ctx
, const struct value_desc
*d
, union value
*v
)
498 struct gl_buffer_object
**buffer_obj
;
499 struct gl_client_array
*array
;
503 case GL_MAJOR_VERSION
:
504 v
->value_int
= ctx
->Version
/ 10;
506 case GL_MINOR_VERSION
:
507 v
->value_int
= ctx
->Version
% 10;
513 case GL_TEXTURE_1D_ARRAY_EXT
:
514 case GL_TEXTURE_2D_ARRAY_EXT
:
515 case GL_TEXTURE_CUBE_MAP_ARB
:
516 case GL_TEXTURE_RECTANGLE_NV
:
517 case GL_TEXTURE_EXTERNAL_OES
:
518 v
->value_bool
= _mesa_IsEnabled(d
->pname
);
521 case GL_LINE_STIPPLE_PATTERN
:
522 /* This is the only GLushort, special case it here by promoting
523 * to an int rather than introducing a new type. */
524 v
->value_int
= ctx
->Line
.StipplePattern
;
527 case GL_CURRENT_RASTER_TEXTURE_COORDS
:
528 unit
= ctx
->Texture
.CurrentUnit
;
529 v
->value_float_4
[0] = ctx
->Current
.RasterTexCoords
[unit
][0];
530 v
->value_float_4
[1] = ctx
->Current
.RasterTexCoords
[unit
][1];
531 v
->value_float_4
[2] = ctx
->Current
.RasterTexCoords
[unit
][2];
532 v
->value_float_4
[3] = ctx
->Current
.RasterTexCoords
[unit
][3];
535 case GL_CURRENT_TEXTURE_COORDS
:
536 unit
= ctx
->Texture
.CurrentUnit
;
537 v
->value_float_4
[0] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][0];
538 v
->value_float_4
[1] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][1];
539 v
->value_float_4
[2] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][2];
540 v
->value_float_4
[3] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][3];
543 case GL_COLOR_WRITEMASK
:
544 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[0][RCOMP
] ? 1 : 0;
545 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[0][GCOMP
] ? 1 : 0;
546 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[0][BCOMP
] ? 1 : 0;
547 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[0][ACOMP
] ? 1 : 0;
551 v
->value_bool
= ctx
->Current
.Attrib
[VERT_ATTRIB_EDGEFLAG
][0] == 1.0;
555 v
->value_enum
= ctx
->ReadBuffer
->ColorReadBuffer
;
558 case GL_MAP2_GRID_DOMAIN
:
559 v
->value_float_4
[0] = ctx
->Eval
.MapGrid2u1
;
560 v
->value_float_4
[1] = ctx
->Eval
.MapGrid2u2
;
561 v
->value_float_4
[2] = ctx
->Eval
.MapGrid2v1
;
562 v
->value_float_4
[3] = ctx
->Eval
.MapGrid2v2
;
565 case GL_TEXTURE_STACK_DEPTH
:
566 unit
= ctx
->Texture
.CurrentUnit
;
567 v
->value_int
= ctx
->TextureMatrixStack
[unit
].Depth
+ 1;
569 case GL_TEXTURE_MATRIX
:
570 unit
= ctx
->Texture
.CurrentUnit
;
571 v
->value_matrix
= ctx
->TextureMatrixStack
[unit
].Top
;
574 case GL_TEXTURE_COORD_ARRAY
:
575 case GL_TEXTURE_COORD_ARRAY_SIZE
:
576 case GL_TEXTURE_COORD_ARRAY_TYPE
:
577 case GL_TEXTURE_COORD_ARRAY_STRIDE
:
578 array
= &ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)];
579 v
->value_int
= *(GLuint
*) ((char *) array
+ d
->offset
);
582 case GL_ACTIVE_TEXTURE_ARB
:
583 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Texture
.CurrentUnit
;
585 case GL_CLIENT_ACTIVE_TEXTURE_ARB
:
586 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Array
.ActiveTexture
;
589 case GL_MODELVIEW_STACK_DEPTH
:
590 case GL_PROJECTION_STACK_DEPTH
:
591 v
->value_int
= *(GLint
*) ((char *) ctx
+ d
->offset
) + 1;
594 case GL_MAX_TEXTURE_SIZE
:
595 case GL_MAX_3D_TEXTURE_SIZE
:
596 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB
:
597 p
= (GLuint
*) ((char *) ctx
+ d
->offset
);
598 v
->value_int
= 1 << (*p
- 1);
602 v
->value_int_4
[0] = ctx
->Scissor
.X
;
603 v
->value_int_4
[1] = ctx
->Scissor
.Y
;
604 v
->value_int_4
[2] = ctx
->Scissor
.Width
;
605 v
->value_int_4
[3] = ctx
->Scissor
.Height
;
610 ctx
->ListState
.CurrentList
? ctx
->ListState
.CurrentList
->Name
: 0;
613 if (!ctx
->CompileFlag
)
615 else if (ctx
->ExecuteFlag
)
616 v
->value_enum
= GL_COMPILE_AND_EXECUTE
;
618 v
->value_enum
= GL_COMPILE
;
622 v
->value_int_4
[0] = ctx
->Viewport
.X
;
623 v
->value_int_4
[1] = ctx
->Viewport
.Y
;
624 v
->value_int_4
[2] = ctx
->Viewport
.Width
;
625 v
->value_int_4
[3] = ctx
->Viewport
.Height
;
628 case GL_ACTIVE_STENCIL_FACE_EXT
:
629 v
->value_enum
= ctx
->Stencil
.ActiveFace
? GL_BACK
: GL_FRONT
;
632 case GL_STENCIL_FAIL
:
633 v
->value_enum
= ctx
->Stencil
.FailFunc
[ctx
->Stencil
.ActiveFace
];
635 case GL_STENCIL_FUNC
:
636 v
->value_enum
= ctx
->Stencil
.Function
[ctx
->Stencil
.ActiveFace
];
638 case GL_STENCIL_PASS_DEPTH_FAIL
:
639 v
->value_enum
= ctx
->Stencil
.ZFailFunc
[ctx
->Stencil
.ActiveFace
];
641 case GL_STENCIL_PASS_DEPTH_PASS
:
642 v
->value_enum
= ctx
->Stencil
.ZPassFunc
[ctx
->Stencil
.ActiveFace
];
645 v
->value_int
= ctx
->Stencil
.Ref
[ctx
->Stencil
.ActiveFace
];
647 case GL_STENCIL_VALUE_MASK
:
648 v
->value_int
= ctx
->Stencil
.ValueMask
[ctx
->Stencil
.ActiveFace
];
650 case GL_STENCIL_WRITEMASK
:
651 v
->value_int
= ctx
->Stencil
.WriteMask
[ctx
->Stencil
.ActiveFace
];
654 case GL_NUM_EXTENSIONS
:
655 v
->value_int
= _mesa_get_extension_count(ctx
);
658 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES
:
659 v
->value_int
= _mesa_get_color_read_type(ctx
);
661 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES
:
662 v
->value_int
= _mesa_get_color_read_format(ctx
);
665 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB
:
666 v
->value_int
= ctx
->CurrentStack
->Depth
+ 1;
668 case GL_CURRENT_MATRIX_ARB
:
669 case GL_TRANSPOSE_CURRENT_MATRIX_ARB
:
670 v
->value_matrix
= ctx
->CurrentStack
->Top
;
673 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB
:
674 v
->value_int
= _mesa_get_compressed_formats(ctx
, NULL
);
676 case GL_COMPRESSED_TEXTURE_FORMATS_ARB
:
678 _mesa_get_compressed_formats(ctx
, v
->value_int_n
.ints
);
679 ASSERT(v
->value_int_n
.n
<= 100);
682 case GL_MAX_VARYING_FLOATS_ARB
:
683 v
->value_int
= ctx
->Const
.MaxVarying
* 4;
686 /* Various object names */
688 case GL_TEXTURE_BINDING_1D
:
689 case GL_TEXTURE_BINDING_2D
:
690 case GL_TEXTURE_BINDING_3D
:
691 case GL_TEXTURE_BINDING_1D_ARRAY_EXT
:
692 case GL_TEXTURE_BINDING_2D_ARRAY_EXT
:
693 case GL_TEXTURE_BINDING_CUBE_MAP_ARB
:
694 case GL_TEXTURE_BINDING_RECTANGLE_NV
:
695 case GL_TEXTURE_BINDING_EXTERNAL_OES
:
696 case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY
:
697 case GL_TEXTURE_BINDING_2D_MULTISAMPLE
:
698 case GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY
:
699 unit
= ctx
->Texture
.CurrentUnit
;
701 ctx
->Texture
.Unit
[unit
].CurrentTex
[d
->offset
]->Name
;
704 /* GL_ARB_vertex_buffer_object */
705 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB
:
706 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB
:
707 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB
:
708 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB
:
709 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB
:
710 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB
:
711 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB
:
712 buffer_obj
= (struct gl_buffer_object
**)
713 ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
714 v
->value_int
= (*buffer_obj
)->Name
;
716 case GL_ARRAY_BUFFER_BINDING_ARB
:
717 v
->value_int
= ctx
->Array
.ArrayBufferObj
->Name
;
719 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB
:
721 ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)].BufferObj
->Name
;
723 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB
:
724 v
->value_int
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Name
;
727 /* ARB_copy_buffer */
728 case GL_COPY_READ_BUFFER
:
729 v
->value_int
= ctx
->CopyReadBuffer
->Name
;
731 case GL_COPY_WRITE_BUFFER
:
732 v
->value_int
= ctx
->CopyWriteBuffer
->Name
;
735 case GL_PIXEL_PACK_BUFFER_BINDING_EXT
:
736 v
->value_int
= ctx
->Pack
.BufferObj
->Name
;
738 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT
:
739 v
->value_int
= ctx
->Unpack
.BufferObj
->Name
;
741 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
742 v
->value_int
= ctx
->TransformFeedback
.CurrentBuffer
->Name
;
744 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED
:
745 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Paused
;
747 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE
:
748 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Active
;
750 case GL_TRANSFORM_FEEDBACK_BINDING
:
751 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Name
;
753 case GL_CURRENT_PROGRAM
:
755 ctx
->Shader
.ActiveProgram
? ctx
->Shader
.ActiveProgram
->Name
: 0;
757 case GL_READ_FRAMEBUFFER_BINDING_EXT
:
758 v
->value_int
= ctx
->ReadBuffer
->Name
;
760 case GL_RENDERBUFFER_BINDING_EXT
:
762 ctx
->CurrentRenderbuffer
? ctx
->CurrentRenderbuffer
->Name
: 0;
764 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES
:
765 v
->value_int
= ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_POINT_SIZE
].BufferObj
->Name
;
769 if(ctx
->Color
._ClampFragmentColor
)
770 COPY_4FV(v
->value_float_4
, ctx
->Fog
.Color
);
772 COPY_4FV(v
->value_float_4
, ctx
->Fog
.ColorUnclamped
);
774 case GL_COLOR_CLEAR_VALUE
:
775 if(ctx
->Color
._ClampFragmentColor
) {
776 v
->value_float_4
[0] = CLAMP(ctx
->Color
.ClearColor
.f
[0], 0.0F
, 1.0F
);
777 v
->value_float_4
[1] = CLAMP(ctx
->Color
.ClearColor
.f
[1], 0.0F
, 1.0F
);
778 v
->value_float_4
[2] = CLAMP(ctx
->Color
.ClearColor
.f
[2], 0.0F
, 1.0F
);
779 v
->value_float_4
[3] = CLAMP(ctx
->Color
.ClearColor
.f
[3], 0.0F
, 1.0F
);
781 COPY_4FV(v
->value_float_4
, ctx
->Color
.ClearColor
.f
);
783 case GL_BLEND_COLOR_EXT
:
784 if(ctx
->Color
._ClampFragmentColor
)
785 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColor
);
787 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColorUnclamped
);
789 case GL_ALPHA_TEST_REF
:
790 if(ctx
->Color
._ClampFragmentColor
)
791 v
->value_float
= ctx
->Color
.AlphaRef
;
793 v
->value_float
= ctx
->Color
.AlphaRefUnclamped
;
795 case GL_MAX_VERTEX_UNIFORM_VECTORS
:
796 v
->value_int
= ctx
->Const
.VertexProgram
.MaxUniformComponents
/ 4;
799 case GL_MAX_FRAGMENT_UNIFORM_VECTORS
:
800 v
->value_int
= ctx
->Const
.FragmentProgram
.MaxUniformComponents
/ 4;
803 /* GL_ARB_texture_buffer_object */
804 case GL_TEXTURE_BUFFER_ARB
:
805 v
->value_int
= ctx
->Texture
.BufferObject
->Name
;
807 case GL_TEXTURE_BINDING_BUFFER_ARB
:
808 unit
= ctx
->Texture
.CurrentUnit
;
810 ctx
->Texture
.Unit
[unit
].CurrentTex
[TEXTURE_BUFFER_INDEX
]->Name
;
812 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB
:
814 struct gl_buffer_object
*buf
=
815 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
816 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObject
;
817 v
->value_int
= buf
? buf
->Name
: 0;
820 case GL_TEXTURE_BUFFER_FORMAT_ARB
:
821 v
->value_int
= ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
822 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObjectFormat
;
825 /* GL_ARB_sampler_objects */
826 case GL_SAMPLER_BINDING
:
828 struct gl_sampler_object
*samp
=
829 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
].Sampler
;
830 v
->value_int
= samp
? samp
->Name
: 0;
833 /* GL_ARB_uniform_buffer_object */
834 case GL_UNIFORM_BUFFER_BINDING
:
835 v
->value_int
= ctx
->UniformBuffer
->Name
;
837 /* GL_ARB_timer_query */
839 if (ctx
->Driver
.GetTimestamp
) {
840 v
->value_int64
= ctx
->Driver
.GetTimestamp(ctx
);
843 _mesa_problem(ctx
, "driver doesn't implement GetTimestamp");
850 * Check extra constraints on a struct value_desc descriptor
852 * If a struct value_desc has a non-NULL extra pointer, it means that
853 * there are a number of extra constraints to check or actions to
854 * perform. The extras is just an integer array where each integer
855 * encode different constraints or actions.
857 * \param ctx current context
858 * \param func name of calling glGet*v() function for error reporting
859 * \param d the struct value_desc that has the extra constraints
861 * \return GL_FALSE if one of the constraints was not satisfied,
865 check_extra(struct gl_context
*ctx
, const char *func
, const struct value_desc
*d
)
867 const GLuint version
= ctx
->Version
;
873 for (e
= d
->extra
; *e
!= EXTRA_END
; e
++)
875 case EXTRA_VERSION_30
:
881 case EXTRA_VERSION_31
:
887 case EXTRA_VERSION_32
:
893 case EXTRA_NEW_FRAG_CLAMP
:
894 if (ctx
->NewState
& (_NEW_BUFFERS
| _NEW_FRAG_CLAMP
))
895 _mesa_update_state(ctx
);
898 if (ctx
->API
== API_OPENGLES2
) {
904 if (_mesa_is_gles3(ctx
)) {
910 if (_mesa_is_desktop_gl(ctx
)) {
915 case EXTRA_API_GL_CORE
:
916 if (ctx
->API
== API_OPENGL_CORE
) {
921 case EXTRA_NEW_BUFFERS
:
922 if (ctx
->NewState
& _NEW_BUFFERS
)
923 _mesa_update_state(ctx
);
925 case EXTRA_FLUSH_CURRENT
:
926 FLUSH_CURRENT(ctx
, 0);
928 case EXTRA_VALID_DRAW_BUFFER
:
929 if (d
->pname
- GL_DRAW_BUFFER0_ARB
>= ctx
->Const
.MaxDrawBuffers
) {
930 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(draw buffer %u)",
931 func
, d
->pname
- GL_DRAW_BUFFER0_ARB
);
935 case EXTRA_VALID_TEXTURE_UNIT
:
936 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
937 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(texture %u)",
938 func
, ctx
->Texture
.CurrentUnit
);
942 case EXTRA_VALID_CLIP_DISTANCE
:
943 if (d
->pname
- GL_CLIP_DISTANCE0
>= ctx
->Const
.MaxClipPlanes
) {
944 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(clip distance %u)",
945 func
, d
->pname
- GL_CLIP_DISTANCE0
);
950 if (ctx
->Const
.GLSLVersion
>= 130) {
957 default: /* *e is a offset into the extension struct */
959 if (*(GLboolean
*) ((char *) &ctx
->Extensions
+ *e
))
964 if (total
> 0 && enabled
== 0) {
965 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
966 _mesa_lookup_enum_by_nr(d
->pname
));
973 static const struct value_desc error_value
=
974 { 0, 0, TYPE_INVALID
, NO_OFFSET
, NO_EXTRA
};
977 * Find the struct value_desc corresponding to the enum 'pname'.
979 * We hash the enum value to get an index into the 'table' array,
980 * which holds the index in the 'values' array of struct value_desc.
981 * Once we've found the entry, we do the extra checks, if any, then
982 * look up the value and return a pointer to it.
984 * If the value has to be computed (for example, it's the result of a
985 * function call or we need to add 1 to it), we use the tmp 'v' to
988 * \param func name of glGet*v() func for error reporting
989 * \param pname the enum value we're looking up
990 * \param p is were we return the pointer to the value
991 * \param v a tmp union value variable in the calling glGet*v() function
993 * \return the struct value_desc corresponding to the enum or a struct
994 * value_desc of TYPE_INVALID if not found. This lets the calling
995 * glGet*v() function jump right into a switch statement and
996 * handle errors there instead of having to check for NULL.
998 static const struct value_desc
*
999 find_value(const char *func
, GLenum pname
, void **p
, union value
*v
)
1001 GET_CURRENT_CONTEXT(ctx
);
1002 struct gl_texture_unit
*unit
;
1004 const struct value_desc
*d
;
1008 /* We index into the table_set[] list of per-API hash tables using the API's
1009 * value in the gl_api enum. Since GLES 3 doesn't have an API_OPENGL* enum
1010 * value since it's compatible with GLES2 its entry in table_set[] is at the
1013 STATIC_ASSERT(Elements(table_set
) == API_OPENGL_LAST
+ 2);
1014 if (_mesa_is_gles3(ctx
)) {
1015 api
= API_OPENGL_LAST
+ 1;
1017 mask
= Elements(table(api
)) - 1;
1018 hash
= (pname
* prime_factor
);
1020 int idx
= table(api
)[hash
& mask
];
1022 /* If the enum isn't valid, the hash walk ends with index 0,
1023 * pointing to the first entry of values[] which doesn't hold
1024 * any valid enum. */
1025 if (unlikely(idx
== 0)) {
1026 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1027 _mesa_lookup_enum_by_nr(pname
));
1028 return &error_value
;
1032 if (likely(d
->pname
== pname
))
1038 if (unlikely(d
->extra
&& !check_extra(ctx
, func
, d
)))
1039 return &error_value
;
1041 switch (d
->location
) {
1043 *p
= ((char *) ctx
->DrawBuffer
+ d
->offset
);
1046 *p
= ((char *) ctx
+ d
->offset
);
1049 *p
= ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
1052 unit
= &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
1053 *p
= ((char *) unit
+ d
->offset
);
1056 find_custom_value(ctx
, d
, v
);
1064 /* silence warning */
1065 return &error_value
;
1068 static const int transpose
[] = {
1076 _mesa_GetBooleanv(GLenum pname
, GLboolean
*params
)
1078 const struct value_desc
*d
;
1084 d
= find_value("glGetBooleanv", pname
, &p
, &v
);
1089 params
[0] = INT_TO_BOOLEAN(d
->offset
);
1094 params
[3] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[3]);
1097 params
[2] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[2]);
1100 params
[1] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[1]);
1103 params
[0] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[0]);
1107 params
[0] = FLOAT_TO_BOOLEAN(((GLdouble
*) p
)[0]);
1111 params
[3] = INT_TO_BOOLEAN(((GLint
*) p
)[3]);
1113 params
[2] = INT_TO_BOOLEAN(((GLint
*) p
)[2]);
1116 params
[1] = INT_TO_BOOLEAN(((GLint
*) p
)[1]);
1119 params
[0] = INT_TO_BOOLEAN(((GLint
*) p
)[0]);
1123 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1124 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1128 params
[0] = INT64_TO_BOOLEAN(((GLint64
*) p
)[0]);
1132 params
[0] = ((GLboolean
*) p
)[0];
1136 m
= *(GLmatrix
**) p
;
1137 for (i
= 0; i
< 16; i
++)
1138 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[i
]);
1142 m
= *(GLmatrix
**) p
;
1143 for (i
= 0; i
< 16; i
++)
1144 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[transpose
[i
]]);
1155 shift
= d
->type
- TYPE_BIT_0
;
1156 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1162 _mesa_GetFloatv(GLenum pname
, GLfloat
*params
)
1164 const struct value_desc
*d
;
1170 d
= find_value("glGetFloatv", pname
, &p
, &v
);
1175 params
[0] = (GLfloat
) d
->offset
;
1180 params
[3] = ((GLfloat
*) p
)[3];
1183 params
[2] = ((GLfloat
*) p
)[2];
1186 params
[1] = ((GLfloat
*) p
)[1];
1189 params
[0] = ((GLfloat
*) p
)[0];
1193 params
[0] = (GLfloat
) (((GLdouble
*) p
)[0]);
1197 params
[3] = (GLfloat
) (((GLint
*) p
)[3]);
1199 params
[2] = (GLfloat
) (((GLint
*) p
)[2]);
1202 params
[1] = (GLfloat
) (((GLint
*) p
)[1]);
1205 params
[0] = (GLfloat
) (((GLint
*) p
)[0]);
1209 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1210 params
[i
] = INT_TO_FLOAT(v
.value_int_n
.ints
[i
]);
1214 params
[0] = (GLfloat
) (((GLint64
*) p
)[0]);
1218 params
[0] = BOOLEAN_TO_FLOAT(*(GLboolean
*) p
);
1222 m
= *(GLmatrix
**) p
;
1223 for (i
= 0; i
< 16; i
++)
1224 params
[i
] = m
->m
[i
];
1228 m
= *(GLmatrix
**) p
;
1229 for (i
= 0; i
< 16; i
++)
1230 params
[i
] = m
->m
[transpose
[i
]];
1241 shift
= d
->type
- TYPE_BIT_0
;
1242 params
[0] = BOOLEAN_TO_FLOAT((*(GLbitfield
*) p
>> shift
) & 1);
1248 _mesa_GetIntegerv(GLenum pname
, GLint
*params
)
1250 const struct value_desc
*d
;
1256 d
= find_value("glGetIntegerv", pname
, &p
, &v
);
1261 params
[0] = d
->offset
;
1265 params
[3] = IROUND(((GLfloat
*) p
)[3]);
1267 params
[2] = IROUND(((GLfloat
*) p
)[2]);
1269 params
[1] = IROUND(((GLfloat
*) p
)[1]);
1271 params
[0] = IROUND(((GLfloat
*) p
)[0]);
1275 params
[3] = FLOAT_TO_INT(((GLfloat
*) p
)[3]);
1277 params
[2] = FLOAT_TO_INT(((GLfloat
*) p
)[2]);
1279 params
[1] = FLOAT_TO_INT(((GLfloat
*) p
)[1]);
1281 params
[0] = FLOAT_TO_INT(((GLfloat
*) p
)[0]);
1285 params
[0] = FLOAT_TO_INT(((GLdouble
*) p
)[0]);
1289 params
[3] = ((GLint
*) p
)[3];
1291 params
[2] = ((GLint
*) p
)[2];
1294 params
[1] = ((GLint
*) p
)[1];
1297 params
[0] = ((GLint
*) p
)[0];
1301 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1302 params
[i
] = v
.value_int_n
.ints
[i
];
1306 params
[0] = INT64_TO_INT(((GLint64
*) p
)[0]);
1310 params
[0] = BOOLEAN_TO_INT(*(GLboolean
*) p
);
1314 m
= *(GLmatrix
**) p
;
1315 for (i
= 0; i
< 16; i
++)
1316 params
[i
] = FLOAT_TO_INT(m
->m
[i
]);
1320 m
= *(GLmatrix
**) p
;
1321 for (i
= 0; i
< 16; i
++)
1322 params
[i
] = FLOAT_TO_INT(m
->m
[transpose
[i
]]);
1333 shift
= d
->type
- TYPE_BIT_0
;
1334 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1340 _mesa_GetInteger64v(GLenum pname
, GLint64
*params
)
1342 const struct value_desc
*d
;
1348 d
= find_value("glGetInteger64v", pname
, &p
, &v
);
1353 params
[0] = d
->offset
;
1357 params
[3] = IROUND64(((GLfloat
*) p
)[3]);
1359 params
[2] = IROUND64(((GLfloat
*) p
)[2]);
1361 params
[1] = IROUND64(((GLfloat
*) p
)[1]);
1363 params
[0] = IROUND64(((GLfloat
*) p
)[0]);
1367 params
[3] = FLOAT_TO_INT64(((GLfloat
*) p
)[3]);
1369 params
[2] = FLOAT_TO_INT64(((GLfloat
*) p
)[2]);
1371 params
[1] = FLOAT_TO_INT64(((GLfloat
*) p
)[1]);
1373 params
[0] = FLOAT_TO_INT64(((GLfloat
*) p
)[0]);
1377 params
[0] = FLOAT_TO_INT64(((GLdouble
*) p
)[0]);
1381 params
[3] = ((GLint
*) p
)[3];
1383 params
[2] = ((GLint
*) p
)[2];
1386 params
[1] = ((GLint
*) p
)[1];
1389 params
[0] = ((GLint
*) p
)[0];
1393 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1394 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1398 params
[0] = ((GLint64
*) p
)[0];
1402 params
[0] = ((GLboolean
*) p
)[0];
1406 m
= *(GLmatrix
**) p
;
1407 for (i
= 0; i
< 16; i
++)
1408 params
[i
] = FLOAT_TO_INT64(m
->m
[i
]);
1412 m
= *(GLmatrix
**) p
;
1413 for (i
= 0; i
< 16; i
++)
1414 params
[i
] = FLOAT_TO_INT64(m
->m
[transpose
[i
]]);
1425 shift
= d
->type
- TYPE_BIT_0
;
1426 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1432 _mesa_GetDoublev(GLenum pname
, GLdouble
*params
)
1434 const struct value_desc
*d
;
1440 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1445 params
[0] = d
->offset
;
1450 params
[3] = ((GLfloat
*) p
)[3];
1453 params
[2] = ((GLfloat
*) p
)[2];
1456 params
[1] = ((GLfloat
*) p
)[1];
1459 params
[0] = ((GLfloat
*) p
)[0];
1463 params
[0] = ((GLdouble
*) p
)[0];
1467 params
[3] = ((GLint
*) p
)[3];
1469 params
[2] = ((GLint
*) p
)[2];
1472 params
[1] = ((GLint
*) p
)[1];
1475 params
[0] = ((GLint
*) p
)[0];
1479 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1480 params
[i
] = v
.value_int_n
.ints
[i
];
1484 params
[0] = (GLdouble
) (((GLint64
*) p
)[0]);
1488 params
[0] = *(GLboolean
*) p
;
1492 m
= *(GLmatrix
**) p
;
1493 for (i
= 0; i
< 16; i
++)
1494 params
[i
] = m
->m
[i
];
1498 m
= *(GLmatrix
**) p
;
1499 for (i
= 0; i
< 16; i
++)
1500 params
[i
] = m
->m
[transpose
[i
]];
1511 shift
= d
->type
- TYPE_BIT_0
;
1512 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1517 static enum value_type
1518 find_value_indexed(const char *func
, GLenum pname
, GLuint index
, union value
*v
)
1520 GET_CURRENT_CONTEXT(ctx
);
1525 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1527 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1529 v
->value_int
= (ctx
->Color
.BlendEnabled
>> index
) & 1;
1534 case GL_BLEND_SRC_RGB
:
1535 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1537 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1539 v
->value_int
= ctx
->Color
.Blend
[index
].SrcRGB
;
1541 case GL_BLEND_SRC_ALPHA
:
1542 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1544 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1546 v
->value_int
= ctx
->Color
.Blend
[index
].SrcA
;
1550 case GL_BLEND_DST_RGB
:
1551 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1553 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1555 v
->value_int
= ctx
->Color
.Blend
[index
].DstRGB
;
1557 case GL_BLEND_DST_ALPHA
:
1558 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1560 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1562 v
->value_int
= ctx
->Color
.Blend
[index
].DstA
;
1564 case GL_BLEND_EQUATION_RGB
:
1565 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1567 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1569 v
->value_int
= ctx
->Color
.Blend
[index
].EquationRGB
;
1571 case GL_BLEND_EQUATION_ALPHA
:
1572 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1574 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1576 v
->value_int
= ctx
->Color
.Blend
[index
].EquationA
;
1579 case GL_COLOR_WRITEMASK
:
1580 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1582 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1584 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[index
][RCOMP
] ? 1 : 0;
1585 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[index
][GCOMP
] ? 1 : 0;
1586 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[index
][BCOMP
] ? 1 : 0;
1587 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[index
][ACOMP
] ? 1 : 0;
1590 case GL_TRANSFORM_FEEDBACK_BUFFER_START
:
1591 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1593 if (!ctx
->Extensions
.EXT_transform_feedback
)
1595 v
->value_int64
= ctx
->TransformFeedback
.CurrentObject
->Offset
[index
];
1598 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE
:
1599 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1601 if (!ctx
->Extensions
.EXT_transform_feedback
)
1604 = ctx
->TransformFeedback
.CurrentObject
->RequestedSize
[index
];
1607 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
1608 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1610 if (!ctx
->Extensions
.EXT_transform_feedback
)
1612 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->BufferNames
[index
];
1615 case GL_UNIFORM_BUFFER_BINDING
:
1616 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1618 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1620 v
->value_int
= ctx
->UniformBufferBindings
[index
].BufferObject
->Name
;
1623 case GL_UNIFORM_BUFFER_START
:
1624 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1626 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1628 v
->value_int
= ctx
->UniformBufferBindings
[index
].Offset
;
1631 case GL_UNIFORM_BUFFER_SIZE
:
1632 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1634 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1636 v
->value_int
= ctx
->UniformBufferBindings
[index
].Size
;
1641 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1642 _mesa_lookup_enum_by_nr(pname
));
1643 return TYPE_INVALID
;
1645 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(pname=%s)", func
,
1646 _mesa_lookup_enum_by_nr(pname
));
1647 return TYPE_INVALID
;
1651 _mesa_GetBooleani_v( GLenum pname
, GLuint index
, GLboolean
*params
)
1654 enum value_type type
=
1655 find_value_indexed("glGetBooleani_v", pname
, index
, &v
);
1659 params
[0] = INT_TO_BOOLEAN(v
.value_int
);
1662 params
[0] = INT_TO_BOOLEAN(v
.value_int_4
[0]);
1663 params
[1] = INT_TO_BOOLEAN(v
.value_int_4
[1]);
1664 params
[2] = INT_TO_BOOLEAN(v
.value_int_4
[2]);
1665 params
[3] = INT_TO_BOOLEAN(v
.value_int_4
[3]);
1668 params
[0] = INT64_TO_BOOLEAN(v
.value_int
);
1671 ; /* nothing - GL error was recorded */
1676 _mesa_GetIntegeri_v( GLenum pname
, GLuint index
, GLint
*params
)
1679 enum value_type type
=
1680 find_value_indexed("glGetIntegeri_v", pname
, index
, &v
);
1684 params
[0] = v
.value_int
;
1687 params
[0] = v
.value_int_4
[0];
1688 params
[1] = v
.value_int_4
[1];
1689 params
[2] = v
.value_int_4
[2];
1690 params
[3] = v
.value_int_4
[3];
1693 params
[0] = INT64_TO_INT(v
.value_int
);
1696 ; /* nothing - GL error was recorded */
1701 _mesa_GetInteger64i_v( GLenum pname
, GLuint index
, GLint64
*params
)
1704 enum value_type type
=
1705 find_value_indexed("glGetInteger64i_v", pname
, index
, &v
);
1709 params
[0] = v
.value_int
;
1712 params
[0] = v
.value_int_4
[0];
1713 params
[1] = v
.value_int_4
[1];
1714 params
[2] = v
.value_int_4
[2];
1715 params
[3] = v
.value_int_4
[3];
1718 params
[0] = v
.value_int
;
1721 ; /* nothing - GL error was recorded */
1726 _mesa_GetFixedv(GLenum pname
, GLfixed
*params
)
1728 const struct value_desc
*d
;
1734 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1739 params
[0] = INT_TO_FIXED(d
->offset
);
1744 params
[3] = FLOAT_TO_FIXED(((GLfloat
*) p
)[3]);
1747 params
[2] = FLOAT_TO_FIXED(((GLfloat
*) p
)[2]);
1750 params
[1] = FLOAT_TO_FIXED(((GLfloat
*) p
)[1]);
1753 params
[0] = FLOAT_TO_FIXED(((GLfloat
*) p
)[0]);
1757 params
[0] = FLOAT_TO_FIXED(((GLdouble
*) p
)[0]);
1761 params
[3] = INT_TO_FIXED(((GLint
*) p
)[3]);
1763 params
[2] = INT_TO_FIXED(((GLint
*) p
)[2]);
1766 params
[1] = INT_TO_FIXED(((GLint
*) p
)[1]);
1769 params
[0] = INT_TO_FIXED(((GLint
*) p
)[0]);
1773 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1774 params
[i
] = INT_TO_FIXED(v
.value_int_n
.ints
[i
]);
1778 params
[0] = ((GLint64
*) p
)[0];
1782 params
[0] = BOOLEAN_TO_FIXED(((GLboolean
*) p
)[0]);
1786 m
= *(GLmatrix
**) p
;
1787 for (i
= 0; i
< 16; i
++)
1788 params
[i
] = FLOAT_TO_FIXED(m
->m
[i
]);
1792 m
= *(GLmatrix
**) p
;
1793 for (i
= 0; i
< 16; i
++)
1794 params
[i
] = FLOAT_TO_FIXED(m
->m
[transpose
[i
]]);
1805 shift
= d
->type
- TYPE_BIT_0
;
1806 params
[0] = BOOLEAN_TO_FIXED((*(GLbitfield
*) p
>> shift
) & 1);