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
);
359 extra_NV_primitive_restart
[] = {
360 EXT(NV_primitive_restart
),
364 static const int extra_version_30
[] = { EXTRA_VERSION_30
, EXTRA_END
};
365 static const int extra_version_31
[] = { EXTRA_VERSION_31
, EXTRA_END
};
366 static const int extra_version_32
[] = { EXTRA_VERSION_32
, EXTRA_END
};
368 static const int extra_gl30_es3
[] = {
375 extra_ARB_vertex_program_api_es2
[] = {
376 EXT(ARB_vertex_program
),
381 /* The ReadBuffer get token is valid under either full GL or under
382 * GLES2 if the NV_read_buffer extension is available. */
384 extra_NV_read_buffer_api_gl
[] = {
390 /* This is the big table describing all the enums we accept in
391 * glGet*v(). The table is partitioned into six parts: enums
392 * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
393 * between OpenGL and GLES, enums exclusive to GLES, etc for the
394 * remaining combinations. To look up the enums valid in a given API
395 * we will use a hash table specific to that API. These tables are in
396 * turn generated at build time and included through get_hash.h.
397 * The different sections are guarded by #if FEATURE_GL etc to make
398 * sure we only compile in the enums we may need. */
400 #include "get_hash.h"
402 /* All we need now is a way to look up the value struct from the enum.
403 * The code generated by gcc for the old generated big switch
404 * statement is a big, balanced, open coded if/else tree, essentially
405 * an unrolled binary search. It would be natural to sort the new
406 * enum table and use bsearch(), but we will use a read-only hash
407 * table instead. bsearch() has a nice guaranteed worst case
408 * performance, but we're also guaranteed to hit that worst case
409 * (log2(n) iterations) for about half the enums. Instead, using an
410 * open addressing hash table, we can find the enum on the first try
411 * for 80% of the enums, 1 collision for 10% and never more than 5
412 * collisions for any enum (typical numbers). And the code is very
413 * simple, even though it feels a little magic. */
417 print_table_stats(int api
)
419 int i
, j
, collisions
[11], count
, hash
, mask
;
420 const struct value_desc
*d
;
421 const char *api_names
[] = {
422 [API_OPENGL_COMPAT
] = "GL",
423 [API_OPENGL_CORE
] = "GL_CORE",
424 [API_OPENGLES
] = "GLES",
425 [API_OPENGLES2
] = "GLES2",
427 const char *api_name
;
429 api_name
= api
< Elements(api_names
) ? api_names
[api
] : "N/A";
431 mask
= Elements(table(api
)) - 1;
432 memset(collisions
, 0, sizeof collisions
);
434 for (i
= 0; i
< Elements(table(api
)); i
++) {
438 d
= &values
[table(api
)[i
]];
439 hash
= (d
->pname
* prime_factor
);
442 if (values
[table(api
)[hash
& mask
]].pname
== d
->pname
)
454 printf("number of enums for %s: %d (total %ld)\n",
455 api_name
, count
, Elements(values
));
456 for (i
= 0; i
< Elements(collisions
) - 1; i
++)
457 if (collisions
[i
] > 0)
458 printf(" %d enums with %d %scollisions\n",
459 collisions
[i
], i
, i
== 10 ? "or more " : "");
464 * Initialize the enum hash for a given API
466 * This is called from one_time_init() to insert the enum values that
467 * are valid for the API in question into the enum hash table.
469 * \param the current context, for determining the API in question
471 void _mesa_init_get_hash(struct gl_context
*ctx
)
479 * Handle irregular enums
481 * Some values don't conform to the "well-known type at context
482 * pointer + offset" pattern, so we have this function to catch all
483 * the corner cases. Typically, it's a computed value or a one-off
484 * pointer to a custom struct or something.
486 * In this case we can't return a pointer to the value, so we'll have
487 * to use the temporary variable 'v' declared back in the calling
488 * glGet*v() function to store the result.
490 * \param ctx the current context
491 * \param d the struct value_desc that describes the enum
492 * \param v pointer to the tmp declared in the calling glGet*v() function
495 find_custom_value(struct gl_context
*ctx
, const struct value_desc
*d
, union value
*v
)
497 struct gl_buffer_object
**buffer_obj
;
498 struct gl_client_array
*array
;
502 case GL_MAJOR_VERSION
:
503 v
->value_int
= ctx
->Version
/ 10;
505 case GL_MINOR_VERSION
:
506 v
->value_int
= ctx
->Version
% 10;
512 case GL_TEXTURE_1D_ARRAY_EXT
:
513 case GL_TEXTURE_2D_ARRAY_EXT
:
514 case GL_TEXTURE_CUBE_MAP_ARB
:
515 case GL_TEXTURE_RECTANGLE_NV
:
516 case GL_TEXTURE_EXTERNAL_OES
:
517 v
->value_bool
= _mesa_IsEnabled(d
->pname
);
520 case GL_LINE_STIPPLE_PATTERN
:
521 /* This is the only GLushort, special case it here by promoting
522 * to an int rather than introducing a new type. */
523 v
->value_int
= ctx
->Line
.StipplePattern
;
526 case GL_CURRENT_RASTER_TEXTURE_COORDS
:
527 unit
= ctx
->Texture
.CurrentUnit
;
528 v
->value_float_4
[0] = ctx
->Current
.RasterTexCoords
[unit
][0];
529 v
->value_float_4
[1] = ctx
->Current
.RasterTexCoords
[unit
][1];
530 v
->value_float_4
[2] = ctx
->Current
.RasterTexCoords
[unit
][2];
531 v
->value_float_4
[3] = ctx
->Current
.RasterTexCoords
[unit
][3];
534 case GL_CURRENT_TEXTURE_COORDS
:
535 unit
= ctx
->Texture
.CurrentUnit
;
536 v
->value_float_4
[0] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][0];
537 v
->value_float_4
[1] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][1];
538 v
->value_float_4
[2] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][2];
539 v
->value_float_4
[3] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][3];
542 case GL_COLOR_WRITEMASK
:
543 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[0][RCOMP
] ? 1 : 0;
544 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[0][GCOMP
] ? 1 : 0;
545 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[0][BCOMP
] ? 1 : 0;
546 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[0][ACOMP
] ? 1 : 0;
550 v
->value_bool
= ctx
->Current
.Attrib
[VERT_ATTRIB_EDGEFLAG
][0] == 1.0;
554 v
->value_enum
= ctx
->ReadBuffer
->ColorReadBuffer
;
557 case GL_MAP2_GRID_DOMAIN
:
558 v
->value_float_4
[0] = ctx
->Eval
.MapGrid2u1
;
559 v
->value_float_4
[1] = ctx
->Eval
.MapGrid2u2
;
560 v
->value_float_4
[2] = ctx
->Eval
.MapGrid2v1
;
561 v
->value_float_4
[3] = ctx
->Eval
.MapGrid2v2
;
564 case GL_TEXTURE_STACK_DEPTH
:
565 unit
= ctx
->Texture
.CurrentUnit
;
566 v
->value_int
= ctx
->TextureMatrixStack
[unit
].Depth
+ 1;
568 case GL_TEXTURE_MATRIX
:
569 unit
= ctx
->Texture
.CurrentUnit
;
570 v
->value_matrix
= ctx
->TextureMatrixStack
[unit
].Top
;
573 case GL_TEXTURE_COORD_ARRAY
:
574 case GL_TEXTURE_COORD_ARRAY_SIZE
:
575 case GL_TEXTURE_COORD_ARRAY_TYPE
:
576 case GL_TEXTURE_COORD_ARRAY_STRIDE
:
577 array
= &ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)];
578 v
->value_int
= *(GLuint
*) ((char *) array
+ d
->offset
);
581 case GL_ACTIVE_TEXTURE_ARB
:
582 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Texture
.CurrentUnit
;
584 case GL_CLIENT_ACTIVE_TEXTURE_ARB
:
585 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Array
.ActiveTexture
;
588 case GL_MODELVIEW_STACK_DEPTH
:
589 case GL_PROJECTION_STACK_DEPTH
:
590 v
->value_int
= *(GLint
*) ((char *) ctx
+ d
->offset
) + 1;
593 case GL_MAX_TEXTURE_SIZE
:
594 case GL_MAX_3D_TEXTURE_SIZE
:
595 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB
:
596 p
= (GLuint
*) ((char *) ctx
+ d
->offset
);
597 v
->value_int
= 1 << (*p
- 1);
601 v
->value_int_4
[0] = ctx
->Scissor
.X
;
602 v
->value_int_4
[1] = ctx
->Scissor
.Y
;
603 v
->value_int_4
[2] = ctx
->Scissor
.Width
;
604 v
->value_int_4
[3] = ctx
->Scissor
.Height
;
609 ctx
->ListState
.CurrentList
? ctx
->ListState
.CurrentList
->Name
: 0;
612 if (!ctx
->CompileFlag
)
614 else if (ctx
->ExecuteFlag
)
615 v
->value_enum
= GL_COMPILE_AND_EXECUTE
;
617 v
->value_enum
= GL_COMPILE
;
621 v
->value_int_4
[0] = ctx
->Viewport
.X
;
622 v
->value_int_4
[1] = ctx
->Viewport
.Y
;
623 v
->value_int_4
[2] = ctx
->Viewport
.Width
;
624 v
->value_int_4
[3] = ctx
->Viewport
.Height
;
627 case GL_ACTIVE_STENCIL_FACE_EXT
:
628 v
->value_enum
= ctx
->Stencil
.ActiveFace
? GL_BACK
: GL_FRONT
;
631 case GL_STENCIL_FAIL
:
632 v
->value_enum
= ctx
->Stencil
.FailFunc
[ctx
->Stencil
.ActiveFace
];
634 case GL_STENCIL_FUNC
:
635 v
->value_enum
= ctx
->Stencil
.Function
[ctx
->Stencil
.ActiveFace
];
637 case GL_STENCIL_PASS_DEPTH_FAIL
:
638 v
->value_enum
= ctx
->Stencil
.ZFailFunc
[ctx
->Stencil
.ActiveFace
];
640 case GL_STENCIL_PASS_DEPTH_PASS
:
641 v
->value_enum
= ctx
->Stencil
.ZPassFunc
[ctx
->Stencil
.ActiveFace
];
644 v
->value_int
= ctx
->Stencil
.Ref
[ctx
->Stencil
.ActiveFace
];
646 case GL_STENCIL_VALUE_MASK
:
647 v
->value_int
= ctx
->Stencil
.ValueMask
[ctx
->Stencil
.ActiveFace
];
649 case GL_STENCIL_WRITEMASK
:
650 v
->value_int
= ctx
->Stencil
.WriteMask
[ctx
->Stencil
.ActiveFace
];
653 case GL_NUM_EXTENSIONS
:
654 v
->value_int
= _mesa_get_extension_count(ctx
);
657 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES
:
658 v
->value_int
= _mesa_get_color_read_type(ctx
);
660 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES
:
661 v
->value_int
= _mesa_get_color_read_format(ctx
);
664 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB
:
665 v
->value_int
= ctx
->CurrentStack
->Depth
+ 1;
667 case GL_CURRENT_MATRIX_ARB
:
668 case GL_TRANSPOSE_CURRENT_MATRIX_ARB
:
669 v
->value_matrix
= ctx
->CurrentStack
->Top
;
672 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB
:
673 v
->value_int
= _mesa_get_compressed_formats(ctx
, NULL
);
675 case GL_COMPRESSED_TEXTURE_FORMATS_ARB
:
677 _mesa_get_compressed_formats(ctx
, v
->value_int_n
.ints
);
678 ASSERT(v
->value_int_n
.n
<= 100);
681 case GL_MAX_VARYING_FLOATS_ARB
:
682 v
->value_int
= ctx
->Const
.MaxVarying
* 4;
685 /* Various object names */
687 case GL_TEXTURE_BINDING_1D
:
688 case GL_TEXTURE_BINDING_2D
:
689 case GL_TEXTURE_BINDING_3D
:
690 case GL_TEXTURE_BINDING_1D_ARRAY_EXT
:
691 case GL_TEXTURE_BINDING_2D_ARRAY_EXT
:
692 case GL_TEXTURE_BINDING_CUBE_MAP_ARB
:
693 case GL_TEXTURE_BINDING_RECTANGLE_NV
:
694 case GL_TEXTURE_BINDING_EXTERNAL_OES
:
695 case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY
:
696 unit
= ctx
->Texture
.CurrentUnit
;
698 ctx
->Texture
.Unit
[unit
].CurrentTex
[d
->offset
]->Name
;
701 /* GL_ARB_vertex_buffer_object */
702 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB
:
703 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB
:
704 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB
:
705 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB
:
706 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB
:
707 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB
:
708 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB
:
709 buffer_obj
= (struct gl_buffer_object
**)
710 ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
711 v
->value_int
= (*buffer_obj
)->Name
;
713 case GL_ARRAY_BUFFER_BINDING_ARB
:
714 v
->value_int
= ctx
->Array
.ArrayBufferObj
->Name
;
716 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB
:
718 ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)].BufferObj
->Name
;
720 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB
:
721 v
->value_int
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Name
;
724 /* ARB_copy_buffer */
725 case GL_COPY_READ_BUFFER
:
726 v
->value_int
= ctx
->CopyReadBuffer
->Name
;
728 case GL_COPY_WRITE_BUFFER
:
729 v
->value_int
= ctx
->CopyWriteBuffer
->Name
;
732 case GL_PIXEL_PACK_BUFFER_BINDING_EXT
:
733 v
->value_int
= ctx
->Pack
.BufferObj
->Name
;
735 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT
:
736 v
->value_int
= ctx
->Unpack
.BufferObj
->Name
;
738 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
739 v
->value_int
= ctx
->TransformFeedback
.CurrentBuffer
->Name
;
741 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED
:
742 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Paused
;
744 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE
:
745 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Active
;
747 case GL_TRANSFORM_FEEDBACK_BINDING
:
748 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Name
;
750 case GL_CURRENT_PROGRAM
:
752 ctx
->Shader
.ActiveProgram
? ctx
->Shader
.ActiveProgram
->Name
: 0;
754 case GL_READ_FRAMEBUFFER_BINDING_EXT
:
755 v
->value_int
= ctx
->ReadBuffer
->Name
;
757 case GL_RENDERBUFFER_BINDING_EXT
:
759 ctx
->CurrentRenderbuffer
? ctx
->CurrentRenderbuffer
->Name
: 0;
761 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES
:
762 v
->value_int
= ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_POINT_SIZE
].BufferObj
->Name
;
766 if(ctx
->Color
._ClampFragmentColor
)
767 COPY_4FV(v
->value_float_4
, ctx
->Fog
.Color
);
769 COPY_4FV(v
->value_float_4
, ctx
->Fog
.ColorUnclamped
);
771 case GL_COLOR_CLEAR_VALUE
:
772 if(ctx
->Color
._ClampFragmentColor
) {
773 v
->value_float_4
[0] = CLAMP(ctx
->Color
.ClearColor
.f
[0], 0.0F
, 1.0F
);
774 v
->value_float_4
[1] = CLAMP(ctx
->Color
.ClearColor
.f
[1], 0.0F
, 1.0F
);
775 v
->value_float_4
[2] = CLAMP(ctx
->Color
.ClearColor
.f
[2], 0.0F
, 1.0F
);
776 v
->value_float_4
[3] = CLAMP(ctx
->Color
.ClearColor
.f
[3], 0.0F
, 1.0F
);
778 COPY_4FV(v
->value_float_4
, ctx
->Color
.ClearColor
.f
);
780 case GL_BLEND_COLOR_EXT
:
781 if(ctx
->Color
._ClampFragmentColor
)
782 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColor
);
784 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColorUnclamped
);
786 case GL_ALPHA_TEST_REF
:
787 if(ctx
->Color
._ClampFragmentColor
)
788 v
->value_float
= ctx
->Color
.AlphaRef
;
790 v
->value_float
= ctx
->Color
.AlphaRefUnclamped
;
792 case GL_MAX_VERTEX_UNIFORM_VECTORS
:
793 v
->value_int
= ctx
->Const
.VertexProgram
.MaxUniformComponents
/ 4;
796 case GL_MAX_FRAGMENT_UNIFORM_VECTORS
:
797 v
->value_int
= ctx
->Const
.FragmentProgram
.MaxUniformComponents
/ 4;
800 /* GL_ARB_texture_buffer_object */
801 case GL_TEXTURE_BUFFER_ARB
:
802 v
->value_int
= ctx
->Texture
.BufferObject
->Name
;
804 case GL_TEXTURE_BINDING_BUFFER_ARB
:
805 unit
= ctx
->Texture
.CurrentUnit
;
807 ctx
->Texture
.Unit
[unit
].CurrentTex
[TEXTURE_BUFFER_INDEX
]->Name
;
809 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB
:
811 struct gl_buffer_object
*buf
=
812 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
813 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObject
;
814 v
->value_int
= buf
? buf
->Name
: 0;
817 case GL_TEXTURE_BUFFER_FORMAT_ARB
:
818 v
->value_int
= ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
819 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObjectFormat
;
822 /* GL_ARB_sampler_objects */
823 case GL_SAMPLER_BINDING
:
825 struct gl_sampler_object
*samp
=
826 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
].Sampler
;
827 v
->value_int
= samp
? samp
->Name
: 0;
830 /* GL_ARB_uniform_buffer_object */
831 case GL_UNIFORM_BUFFER_BINDING
:
832 v
->value_int
= ctx
->UniformBuffer
->Name
;
834 /* GL_ARB_timer_query */
836 if (ctx
->Driver
.GetTimestamp
) {
837 v
->value_int64
= ctx
->Driver
.GetTimestamp(ctx
);
840 _mesa_problem(ctx
, "driver doesn't implement GetTimestamp");
847 * Check extra constraints on a struct value_desc descriptor
849 * If a struct value_desc has a non-NULL extra pointer, it means that
850 * there are a number of extra constraints to check or actions to
851 * perform. The extras is just an integer array where each integer
852 * encode different constraints or actions.
854 * \param ctx current context
855 * \param func name of calling glGet*v() function for error reporting
856 * \param d the struct value_desc that has the extra constraints
858 * \return GL_FALSE if one of the constraints was not satisfied,
862 check_extra(struct gl_context
*ctx
, const char *func
, const struct value_desc
*d
)
864 const GLuint version
= ctx
->Version
;
870 for (e
= d
->extra
; *e
!= EXTRA_END
; e
++)
872 case EXTRA_VERSION_30
:
878 case EXTRA_VERSION_31
:
884 case EXTRA_VERSION_32
:
890 case EXTRA_NEW_FRAG_CLAMP
:
891 if (ctx
->NewState
& (_NEW_BUFFERS
| _NEW_FRAG_CLAMP
))
892 _mesa_update_state(ctx
);
895 if (ctx
->API
== API_OPENGLES2
) {
901 if (_mesa_is_gles3(ctx
)) {
907 if (_mesa_is_desktop_gl(ctx
)) {
912 case EXTRA_API_GL_CORE
:
913 if (ctx
->API
== API_OPENGL_CORE
) {
918 case EXTRA_NEW_BUFFERS
:
919 if (ctx
->NewState
& _NEW_BUFFERS
)
920 _mesa_update_state(ctx
);
922 case EXTRA_FLUSH_CURRENT
:
923 FLUSH_CURRENT(ctx
, 0);
925 case EXTRA_VALID_DRAW_BUFFER
:
926 if (d
->pname
- GL_DRAW_BUFFER0_ARB
>= ctx
->Const
.MaxDrawBuffers
) {
927 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(draw buffer %u)",
928 func
, d
->pname
- GL_DRAW_BUFFER0_ARB
);
932 case EXTRA_VALID_TEXTURE_UNIT
:
933 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
934 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(texture %u)",
935 func
, ctx
->Texture
.CurrentUnit
);
939 case EXTRA_VALID_CLIP_DISTANCE
:
940 if (d
->pname
- GL_CLIP_DISTANCE0
>= ctx
->Const
.MaxClipPlanes
) {
941 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(clip distance %u)",
942 func
, d
->pname
- GL_CLIP_DISTANCE0
);
947 if (ctx
->Const
.GLSLVersion
>= 130) {
954 default: /* *e is a offset into the extension struct */
956 if (*(GLboolean
*) ((char *) &ctx
->Extensions
+ *e
))
961 if (total
> 0 && enabled
== 0) {
962 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
963 _mesa_lookup_enum_by_nr(d
->pname
));
970 static const struct value_desc error_value
=
971 { 0, 0, TYPE_INVALID
, NO_OFFSET
, NO_EXTRA
};
974 * Find the struct value_desc corresponding to the enum 'pname'.
976 * We hash the enum value to get an index into the 'table' array,
977 * which holds the index in the 'values' array of struct value_desc.
978 * Once we've found the entry, we do the extra checks, if any, then
979 * look up the value and return a pointer to it.
981 * If the value has to be computed (for example, it's the result of a
982 * function call or we need to add 1 to it), we use the tmp 'v' to
985 * \param func name of glGet*v() func for error reporting
986 * \param pname the enum value we're looking up
987 * \param p is were we return the pointer to the value
988 * \param v a tmp union value variable in the calling glGet*v() function
990 * \return the struct value_desc corresponding to the enum or a struct
991 * value_desc of TYPE_INVALID if not found. This lets the calling
992 * glGet*v() function jump right into a switch statement and
993 * handle errors there instead of having to check for NULL.
995 static const struct value_desc
*
996 find_value(const char *func
, GLenum pname
, void **p
, union value
*v
)
998 GET_CURRENT_CONTEXT(ctx
);
999 struct gl_texture_unit
*unit
;
1001 const struct value_desc
*d
;
1005 /* We index into the table_set[] list of per-API hash tables using the API's
1006 * value in the gl_api enum. Since GLES 3 doesn't have an API_OPENGL* enum
1007 * value since it's compatible with GLES2 its entry in table_set[] is at the
1010 STATIC_ASSERT(Elements(table_set
) == API_OPENGL_LAST
+ 2);
1011 if (_mesa_is_gles3(ctx
)) {
1012 api
= API_OPENGL_LAST
+ 1;
1014 mask
= Elements(table(api
)) - 1;
1015 hash
= (pname
* prime_factor
);
1017 int idx
= table(api
)[hash
& mask
];
1019 /* If the enum isn't valid, the hash walk ends with index 0,
1020 * pointing to the first entry of values[] which doesn't hold
1021 * any valid enum. */
1022 if (unlikely(idx
== 0)) {
1023 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1024 _mesa_lookup_enum_by_nr(pname
));
1025 return &error_value
;
1029 if (likely(d
->pname
== pname
))
1035 if (unlikely(d
->extra
&& !check_extra(ctx
, func
, d
)))
1036 return &error_value
;
1038 switch (d
->location
) {
1040 *p
= ((char *) ctx
->DrawBuffer
+ d
->offset
);
1043 *p
= ((char *) ctx
+ d
->offset
);
1046 *p
= ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
1049 unit
= &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
1050 *p
= ((char *) unit
+ d
->offset
);
1053 find_custom_value(ctx
, d
, v
);
1061 /* silence warning */
1062 return &error_value
;
1065 static const int transpose
[] = {
1073 _mesa_GetBooleanv(GLenum pname
, GLboolean
*params
)
1075 const struct value_desc
*d
;
1081 d
= find_value("glGetBooleanv", pname
, &p
, &v
);
1086 params
[0] = INT_TO_BOOLEAN(d
->offset
);
1091 params
[3] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[3]);
1094 params
[2] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[2]);
1097 params
[1] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[1]);
1100 params
[0] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[0]);
1104 params
[0] = FLOAT_TO_BOOLEAN(((GLdouble
*) p
)[0]);
1108 params
[3] = INT_TO_BOOLEAN(((GLint
*) p
)[3]);
1110 params
[2] = INT_TO_BOOLEAN(((GLint
*) p
)[2]);
1113 params
[1] = INT_TO_BOOLEAN(((GLint
*) p
)[1]);
1116 params
[0] = INT_TO_BOOLEAN(((GLint
*) p
)[0]);
1120 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1121 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1125 params
[0] = INT64_TO_BOOLEAN(((GLint64
*) p
)[0]);
1129 params
[0] = ((GLboolean
*) p
)[0];
1133 m
= *(GLmatrix
**) p
;
1134 for (i
= 0; i
< 16; i
++)
1135 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[i
]);
1139 m
= *(GLmatrix
**) p
;
1140 for (i
= 0; i
< 16; i
++)
1141 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[transpose
[i
]]);
1152 shift
= d
->type
- TYPE_BIT_0
;
1153 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1159 _mesa_GetFloatv(GLenum pname
, GLfloat
*params
)
1161 const struct value_desc
*d
;
1167 d
= find_value("glGetFloatv", pname
, &p
, &v
);
1172 params
[0] = (GLfloat
) d
->offset
;
1177 params
[3] = ((GLfloat
*) p
)[3];
1180 params
[2] = ((GLfloat
*) p
)[2];
1183 params
[1] = ((GLfloat
*) p
)[1];
1186 params
[0] = ((GLfloat
*) p
)[0];
1190 params
[0] = (GLfloat
) (((GLdouble
*) p
)[0]);
1194 params
[3] = (GLfloat
) (((GLint
*) p
)[3]);
1196 params
[2] = (GLfloat
) (((GLint
*) p
)[2]);
1199 params
[1] = (GLfloat
) (((GLint
*) p
)[1]);
1202 params
[0] = (GLfloat
) (((GLint
*) p
)[0]);
1206 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1207 params
[i
] = INT_TO_FLOAT(v
.value_int_n
.ints
[i
]);
1211 params
[0] = (GLfloat
) (((GLint64
*) p
)[0]);
1215 params
[0] = BOOLEAN_TO_FLOAT(*(GLboolean
*) p
);
1219 m
= *(GLmatrix
**) p
;
1220 for (i
= 0; i
< 16; i
++)
1221 params
[i
] = m
->m
[i
];
1225 m
= *(GLmatrix
**) p
;
1226 for (i
= 0; i
< 16; i
++)
1227 params
[i
] = m
->m
[transpose
[i
]];
1238 shift
= d
->type
- TYPE_BIT_0
;
1239 params
[0] = BOOLEAN_TO_FLOAT((*(GLbitfield
*) p
>> shift
) & 1);
1245 _mesa_GetIntegerv(GLenum pname
, GLint
*params
)
1247 const struct value_desc
*d
;
1253 d
= find_value("glGetIntegerv", pname
, &p
, &v
);
1258 params
[0] = d
->offset
;
1262 params
[3] = IROUND(((GLfloat
*) p
)[3]);
1264 params
[2] = IROUND(((GLfloat
*) p
)[2]);
1266 params
[1] = IROUND(((GLfloat
*) p
)[1]);
1268 params
[0] = IROUND(((GLfloat
*) p
)[0]);
1272 params
[3] = FLOAT_TO_INT(((GLfloat
*) p
)[3]);
1274 params
[2] = FLOAT_TO_INT(((GLfloat
*) p
)[2]);
1276 params
[1] = FLOAT_TO_INT(((GLfloat
*) p
)[1]);
1278 params
[0] = FLOAT_TO_INT(((GLfloat
*) p
)[0]);
1282 params
[0] = FLOAT_TO_INT(((GLdouble
*) p
)[0]);
1286 params
[3] = ((GLint
*) p
)[3];
1288 params
[2] = ((GLint
*) p
)[2];
1291 params
[1] = ((GLint
*) p
)[1];
1294 params
[0] = ((GLint
*) p
)[0];
1298 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1299 params
[i
] = v
.value_int_n
.ints
[i
];
1303 params
[0] = INT64_TO_INT(((GLint64
*) p
)[0]);
1307 params
[0] = BOOLEAN_TO_INT(*(GLboolean
*) p
);
1311 m
= *(GLmatrix
**) p
;
1312 for (i
= 0; i
< 16; i
++)
1313 params
[i
] = FLOAT_TO_INT(m
->m
[i
]);
1317 m
= *(GLmatrix
**) p
;
1318 for (i
= 0; i
< 16; i
++)
1319 params
[i
] = FLOAT_TO_INT(m
->m
[transpose
[i
]]);
1330 shift
= d
->type
- TYPE_BIT_0
;
1331 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1337 _mesa_GetInteger64v(GLenum pname
, GLint64
*params
)
1339 const struct value_desc
*d
;
1345 d
= find_value("glGetInteger64v", pname
, &p
, &v
);
1350 params
[0] = d
->offset
;
1354 params
[3] = IROUND64(((GLfloat
*) p
)[3]);
1356 params
[2] = IROUND64(((GLfloat
*) p
)[2]);
1358 params
[1] = IROUND64(((GLfloat
*) p
)[1]);
1360 params
[0] = IROUND64(((GLfloat
*) p
)[0]);
1364 params
[3] = FLOAT_TO_INT64(((GLfloat
*) p
)[3]);
1366 params
[2] = FLOAT_TO_INT64(((GLfloat
*) p
)[2]);
1368 params
[1] = FLOAT_TO_INT64(((GLfloat
*) p
)[1]);
1370 params
[0] = FLOAT_TO_INT64(((GLfloat
*) p
)[0]);
1374 params
[0] = FLOAT_TO_INT64(((GLdouble
*) p
)[0]);
1378 params
[3] = ((GLint
*) p
)[3];
1380 params
[2] = ((GLint
*) p
)[2];
1383 params
[1] = ((GLint
*) p
)[1];
1386 params
[0] = ((GLint
*) p
)[0];
1390 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1391 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1395 params
[0] = ((GLint64
*) p
)[0];
1399 params
[0] = ((GLboolean
*) p
)[0];
1403 m
= *(GLmatrix
**) p
;
1404 for (i
= 0; i
< 16; i
++)
1405 params
[i
] = FLOAT_TO_INT64(m
->m
[i
]);
1409 m
= *(GLmatrix
**) p
;
1410 for (i
= 0; i
< 16; i
++)
1411 params
[i
] = FLOAT_TO_INT64(m
->m
[transpose
[i
]]);
1422 shift
= d
->type
- TYPE_BIT_0
;
1423 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1429 _mesa_GetDoublev(GLenum pname
, GLdouble
*params
)
1431 const struct value_desc
*d
;
1437 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1442 params
[0] = d
->offset
;
1447 params
[3] = ((GLfloat
*) p
)[3];
1450 params
[2] = ((GLfloat
*) p
)[2];
1453 params
[1] = ((GLfloat
*) p
)[1];
1456 params
[0] = ((GLfloat
*) p
)[0];
1460 params
[0] = ((GLdouble
*) p
)[0];
1464 params
[3] = ((GLint
*) p
)[3];
1466 params
[2] = ((GLint
*) p
)[2];
1469 params
[1] = ((GLint
*) p
)[1];
1472 params
[0] = ((GLint
*) p
)[0];
1476 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1477 params
[i
] = v
.value_int_n
.ints
[i
];
1481 params
[0] = (GLdouble
) (((GLint64
*) p
)[0]);
1485 params
[0] = *(GLboolean
*) p
;
1489 m
= *(GLmatrix
**) p
;
1490 for (i
= 0; i
< 16; i
++)
1491 params
[i
] = m
->m
[i
];
1495 m
= *(GLmatrix
**) p
;
1496 for (i
= 0; i
< 16; i
++)
1497 params
[i
] = m
->m
[transpose
[i
]];
1508 shift
= d
->type
- TYPE_BIT_0
;
1509 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1514 static enum value_type
1515 find_value_indexed(const char *func
, GLenum pname
, GLuint index
, union value
*v
)
1517 GET_CURRENT_CONTEXT(ctx
);
1522 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1524 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1526 v
->value_int
= (ctx
->Color
.BlendEnabled
>> index
) & 1;
1531 case GL_BLEND_SRC_RGB
:
1532 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1534 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1536 v
->value_int
= ctx
->Color
.Blend
[index
].SrcRGB
;
1538 case GL_BLEND_SRC_ALPHA
:
1539 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1541 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1543 v
->value_int
= ctx
->Color
.Blend
[index
].SrcA
;
1547 case GL_BLEND_DST_RGB
:
1548 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1550 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1552 v
->value_int
= ctx
->Color
.Blend
[index
].DstRGB
;
1554 case GL_BLEND_DST_ALPHA
:
1555 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1557 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1559 v
->value_int
= ctx
->Color
.Blend
[index
].DstA
;
1561 case GL_BLEND_EQUATION_RGB
:
1562 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1564 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1566 v
->value_int
= ctx
->Color
.Blend
[index
].EquationRGB
;
1568 case GL_BLEND_EQUATION_ALPHA
:
1569 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1571 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1573 v
->value_int
= ctx
->Color
.Blend
[index
].EquationA
;
1576 case GL_COLOR_WRITEMASK
:
1577 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1579 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1581 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[index
][RCOMP
] ? 1 : 0;
1582 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[index
][GCOMP
] ? 1 : 0;
1583 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[index
][BCOMP
] ? 1 : 0;
1584 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[index
][ACOMP
] ? 1 : 0;
1587 case GL_TRANSFORM_FEEDBACK_BUFFER_START
:
1588 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1590 if (!ctx
->Extensions
.EXT_transform_feedback
)
1592 v
->value_int64
= ctx
->TransformFeedback
.CurrentObject
->Offset
[index
];
1595 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE
:
1596 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1598 if (!ctx
->Extensions
.EXT_transform_feedback
)
1601 = ctx
->TransformFeedback
.CurrentObject
->RequestedSize
[index
];
1604 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
1605 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1607 if (!ctx
->Extensions
.EXT_transform_feedback
)
1609 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->BufferNames
[index
];
1612 case GL_UNIFORM_BUFFER_BINDING
:
1613 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1615 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1617 v
->value_int
= ctx
->UniformBufferBindings
[index
].BufferObject
->Name
;
1620 case GL_UNIFORM_BUFFER_START
:
1621 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1623 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1625 v
->value_int
= ctx
->UniformBufferBindings
[index
].Offset
;
1628 case GL_UNIFORM_BUFFER_SIZE
:
1629 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1631 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1633 v
->value_int
= ctx
->UniformBufferBindings
[index
].Size
;
1638 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1639 _mesa_lookup_enum_by_nr(pname
));
1640 return TYPE_INVALID
;
1642 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(pname=%s)", func
,
1643 _mesa_lookup_enum_by_nr(pname
));
1644 return TYPE_INVALID
;
1648 _mesa_GetBooleani_v( GLenum pname
, GLuint index
, GLboolean
*params
)
1651 enum value_type type
=
1652 find_value_indexed("glGetBooleani_v", pname
, index
, &v
);
1656 params
[0] = INT_TO_BOOLEAN(v
.value_int
);
1659 params
[0] = INT_TO_BOOLEAN(v
.value_int_4
[0]);
1660 params
[1] = INT_TO_BOOLEAN(v
.value_int_4
[1]);
1661 params
[2] = INT_TO_BOOLEAN(v
.value_int_4
[2]);
1662 params
[3] = INT_TO_BOOLEAN(v
.value_int_4
[3]);
1665 params
[0] = INT64_TO_BOOLEAN(v
.value_int
);
1668 ; /* nothing - GL error was recorded */
1673 _mesa_GetIntegeri_v( GLenum pname
, GLuint index
, GLint
*params
)
1676 enum value_type type
=
1677 find_value_indexed("glGetIntegeri_v", pname
, index
, &v
);
1681 params
[0] = v
.value_int
;
1684 params
[0] = v
.value_int_4
[0];
1685 params
[1] = v
.value_int_4
[1];
1686 params
[2] = v
.value_int_4
[2];
1687 params
[3] = v
.value_int_4
[3];
1690 params
[0] = INT64_TO_INT(v
.value_int
);
1693 ; /* nothing - GL error was recorded */
1698 _mesa_GetInteger64i_v( GLenum pname
, GLuint index
, GLint64
*params
)
1701 enum value_type type
=
1702 find_value_indexed("glGetInteger64i_v", pname
, index
, &v
);
1706 params
[0] = v
.value_int
;
1709 params
[0] = v
.value_int_4
[0];
1710 params
[1] = v
.value_int_4
[1];
1711 params
[2] = v
.value_int_4
[2];
1712 params
[3] = v
.value_int_4
[3];
1715 params
[0] = v
.value_int
;
1718 ; /* nothing - GL error was recorded */
1723 _mesa_GetFixedv(GLenum pname
, GLfixed
*params
)
1725 const struct value_desc
*d
;
1731 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1736 params
[0] = INT_TO_FIXED(d
->offset
);
1741 params
[3] = FLOAT_TO_FIXED(((GLfloat
*) p
)[3]);
1744 params
[2] = FLOAT_TO_FIXED(((GLfloat
*) p
)[2]);
1747 params
[1] = FLOAT_TO_FIXED(((GLfloat
*) p
)[1]);
1750 params
[0] = FLOAT_TO_FIXED(((GLfloat
*) p
)[0]);
1754 params
[0] = FLOAT_TO_FIXED(((GLdouble
*) p
)[0]);
1758 params
[3] = INT_TO_FIXED(((GLint
*) p
)[3]);
1760 params
[2] = INT_TO_FIXED(((GLint
*) p
)[2]);
1763 params
[1] = INT_TO_FIXED(((GLint
*) p
)[1]);
1766 params
[0] = INT_TO_FIXED(((GLint
*) p
)[0]);
1770 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1771 params
[i
] = INT_TO_FIXED(v
.value_int_n
.ints
[i
]);
1775 params
[0] = ((GLint64
*) p
)[0];
1779 params
[0] = BOOLEAN_TO_FIXED(((GLboolean
*) p
)[0]);
1783 m
= *(GLmatrix
**) p
;
1784 for (i
= 0; i
< 16; i
++)
1785 params
[i
] = FLOAT_TO_FIXED(m
->m
[i
]);
1789 m
= *(GLmatrix
**) p
;
1790 for (i
= 0; i
< 16; i
++)
1791 params
[i
] = FLOAT_TO_FIXED(m
->m
[transpose
[i
]]);
1802 shift
= d
->type
- TYPE_BIT_0
;
1803 params
[0] = BOOLEAN_TO_FIXED((*(GLbitfield
*) p
>> shift
) & 1);