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
{
134 EXTRA_NEW_FRAG_CLAMP
,
135 EXTRA_VALID_DRAW_BUFFER
,
136 EXTRA_VALID_TEXTURE_UNIT
,
137 EXTRA_VALID_CLIP_DISTANCE
,
142 #define NO_EXTRA NULL
147 GLubyte location
; /**< enum value_location */
148 GLubyte type
; /**< enum value_type */
155 GLfloat value_float_4
[4];
156 GLmatrix
*value_matrix
;
158 GLint value_int_4
[4];
162 /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
166 GLboolean value_bool
;
169 #define BUFFER_FIELD(field, type) \
170 LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
171 #define CONTEXT_FIELD(field, type) \
172 LOC_CONTEXT, type, offsetof(struct gl_context, field)
173 #define ARRAY_FIELD(field, type) \
174 LOC_ARRAY, type, offsetof(struct gl_array_object, field)
175 #undef CONST /* already defined through windows.h */
176 #define CONST(value) \
177 LOC_CONTEXT, TYPE_CONST, value
179 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
180 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
181 #define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
183 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
184 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
185 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
186 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
187 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
188 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
189 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
190 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
191 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
192 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
193 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
194 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
195 #define CONTEXT_BIT6(field) CONTEXT_FIELD(field, TYPE_BIT_6)
196 #define CONTEXT_BIT7(field) CONTEXT_FIELD(field, TYPE_BIT_7)
197 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
198 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
199 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
200 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
201 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
202 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
204 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
205 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
206 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
209 offsetof(struct gl_extensions, f)
211 #define EXTRA_EXT(e) \
212 static const int extra_##e[] = { \
216 #define EXTRA_EXT2(e1, e2) \
217 static const int extra_##e1##_##e2[] = { \
218 EXT(e1), EXT(e2), EXTRA_END \
221 /* The 'extra' mechanism is a way to specify extra checks (such as
222 * extensions or specific gl versions) or actions (flush current, new
223 * buffers) that we need to do before looking up an enum. We need to
224 * declare them all up front so we can refer to them in the value_desc
227 static const int extra_new_buffers
[] = {
232 static const int extra_new_frag_clamp
[] = {
233 EXTRA_NEW_FRAG_CLAMP
,
237 static const int extra_valid_draw_buffer
[] = {
238 EXTRA_VALID_DRAW_BUFFER
,
242 static const int extra_valid_texture_unit
[] = {
243 EXTRA_VALID_TEXTURE_UNIT
,
247 static const int extra_valid_clip_distance
[] = {
248 EXTRA_VALID_CLIP_DISTANCE
,
252 static const int extra_flush_current_valid_texture_unit
[] = {
254 EXTRA_VALID_TEXTURE_UNIT
,
258 static const int extra_flush_current
[] = {
263 static const int extra_EXT_secondary_color_flush_current
[] = {
264 EXT(EXT_secondary_color
),
269 static const int extra_EXT_fog_coord_flush_current
[] = {
275 static const int extra_EXT_texture_integer
[] = {
276 EXT(EXT_texture_integer
),
280 static const int extra_GLSL_130
[] = {
285 static const int extra_texture_buffer_object
[] = {
287 EXT(ARB_texture_buffer_object
),
291 static const int extra_ARB_uniform_buffer_object_and_geometry_shader
[] = {
292 EXT(ARB_uniform_buffer_object
),
293 EXT(ARB_geometry_shader4
),
298 EXTRA_EXT(ARB_ES2_compatibility
);
299 EXTRA_EXT(ARB_texture_cube_map
);
300 EXTRA_EXT(MESA_texture_array
);
301 EXTRA_EXT2(EXT_secondary_color
, ARB_vertex_program
);
302 EXTRA_EXT(EXT_secondary_color
);
303 EXTRA_EXT(EXT_fog_coord
);
304 EXTRA_EXT(NV_fog_distance
);
305 EXTRA_EXT(EXT_texture_filter_anisotropic
);
306 EXTRA_EXT(IBM_rasterpos_clip
);
307 EXTRA_EXT(NV_point_sprite
);
308 EXTRA_EXT(NV_fragment_program
);
309 EXTRA_EXT(NV_texture_rectangle
);
310 EXTRA_EXT(EXT_stencil_two_side
);
311 EXTRA_EXT(NV_light_max_exponent
);
312 EXTRA_EXT(EXT_depth_bounds_test
);
313 EXTRA_EXT(ARB_depth_clamp
);
314 EXTRA_EXT(ATI_fragment_shader
);
315 EXTRA_EXT(EXT_framebuffer_blit
);
316 EXTRA_EXT(ARB_shader_objects
);
317 EXTRA_EXT(EXT_provoking_vertex
);
318 EXTRA_EXT(ARB_fragment_shader
);
319 EXTRA_EXT(ARB_fragment_program
);
320 EXTRA_EXT2(ARB_framebuffer_object
, EXT_framebuffer_multisample
);
321 EXTRA_EXT(EXT_framebuffer_object
);
322 EXTRA_EXT(ARB_seamless_cube_map
);
323 EXTRA_EXT(EXT_compiled_vertex_array
);
325 EXTRA_EXT(ARB_vertex_shader
);
326 EXTRA_EXT(EXT_transform_feedback
);
327 EXTRA_EXT(ARB_transform_feedback2
);
328 EXTRA_EXT(ARB_transform_feedback3
);
329 EXTRA_EXT(EXT_pixel_buffer_object
);
330 EXTRA_EXT(ARB_vertex_program
);
331 EXTRA_EXT2(NV_point_sprite
, ARB_point_sprite
);
332 EXTRA_EXT2(ARB_fragment_program
, NV_fragment_program
);
333 EXTRA_EXT2(ARB_vertex_program
, ARB_fragment_program
);
334 EXTRA_EXT(ARB_geometry_shader4
);
335 EXTRA_EXT(ARB_color_buffer_float
);
336 EXTRA_EXT(ARB_copy_buffer
);
337 EXTRA_EXT(EXT_framebuffer_sRGB
);
338 EXTRA_EXT(ARB_texture_buffer_object
);
339 EXTRA_EXT(OES_EGL_image_external
);
340 EXTRA_EXT(ARB_blend_func_extended
);
341 EXTRA_EXT(ARB_uniform_buffer_object
);
342 EXTRA_EXT(ARB_timer_query
);
345 extra_NV_primitive_restart
[] = {
346 EXT(NV_primitive_restart
),
350 static const int extra_version_30
[] = { EXTRA_VERSION_30
, EXTRA_END
};
351 static const int extra_version_31
[] = { EXTRA_VERSION_31
, EXTRA_END
};
352 static const int extra_version_32
[] = { EXTRA_VERSION_32
, EXTRA_END
};
355 extra_ARB_vertex_program_api_es2
[] = {
356 EXT(ARB_vertex_program
),
361 /* The ReadBuffer get token is valid under either full GL or under
362 * GLES2 if the NV_read_buffer extension is available. */
364 extra_NV_read_buffer_api_gl
[] = {
370 /* This is the big table describing all the enums we accept in
371 * glGet*v(). The table is partitioned into six parts: enums
372 * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
373 * between OpenGL and GLES, enums exclusive to GLES, etc for the
374 * remaining combinations. To look up the enums valid in a given API
375 * we will use a hash table specific to that API. These tables are in
376 * turn generated at build time and included through get_hash.h.
377 * The different sections are guarded by #if FEATURE_GL etc to make
378 * sure we only compile in the enums we may need. */
380 #include "get_hash.h"
382 /* All we need now is a way to look up the value struct from the enum.
383 * The code generated by gcc for the old generated big switch
384 * statement is a big, balanced, open coded if/else tree, essentially
385 * an unrolled binary search. It would be natural to sort the new
386 * enum table and use bsearch(), but we will use a read-only hash
387 * table instead. bsearch() has a nice guaranteed worst case
388 * performance, but we're also guaranteed to hit that worst case
389 * (log2(n) iterations) for about half the enums. Instead, using an
390 * open addressing hash table, we can find the enum on the first try
391 * for 80% of the enums, 1 collision for 10% and never more than 5
392 * collisions for any enum (typical numbers). And the code is very
393 * simple, even though it feels a little magic. */
397 print_table_stats(int api
)
399 int i
, j
, collisions
[11], count
, hash
, mask
;
400 const struct value_desc
*d
;
401 const char *api_names
[] = {
403 [API_OPENGL_CORE
] = "GL_CORE",
404 [API_OPENGLES
] = "GLES",
405 [API_OPENGLES2
] = "GLES2",
407 const char *api_name
;
409 api_name
= api
< Elements(api_names
) ? api_names
[api
] : "N/A";
411 mask
= Elements(table(api
)) - 1;
412 memset(collisions
, 0, sizeof collisions
);
414 for (i
= 0; i
< Elements(table(api
)); i
++) {
418 d
= &values
[table(api
)[i
]];
419 hash
= (d
->pname
* prime_factor
);
422 if (values
[table(api
)[hash
& mask
]].pname
== d
->pname
)
434 printf("number of enums for %s: %d (total %ld)\n",
435 api_name
, count
, Elements(values
));
436 for (i
= 0; i
< Elements(collisions
) - 1; i
++)
437 if (collisions
[i
] > 0)
438 printf(" %d enums with %d %scollisions\n",
439 collisions
[i
], i
, i
== 10 ? "or more " : "");
444 * Initialize the enum hash for a given API
446 * This is called from one_time_init() to insert the enum values that
447 * are valid for the API in question into the enum hash table.
449 * \param the current context, for determining the API in question
451 void _mesa_init_get_hash(struct gl_context
*ctx
)
459 * Handle irregular enums
461 * Some values don't conform to the "well-known type at context
462 * pointer + offset" pattern, so we have this function to catch all
463 * the corner cases. Typically, it's a computed value or a one-off
464 * pointer to a custom struct or something.
466 * In this case we can't return a pointer to the value, so we'll have
467 * to use the temporary variable 'v' declared back in the calling
468 * glGet*v() function to store the result.
470 * \param ctx the current context
471 * \param d the struct value_desc that describes the enum
472 * \param v pointer to the tmp declared in the calling glGet*v() function
475 find_custom_value(struct gl_context
*ctx
, const struct value_desc
*d
, union value
*v
)
477 struct gl_buffer_object
**buffer_obj
;
478 struct gl_client_array
*array
;
482 case GL_MAJOR_VERSION
:
483 v
->value_int
= ctx
->Version
/ 10;
485 case GL_MINOR_VERSION
:
486 v
->value_int
= ctx
->Version
% 10;
492 case GL_TEXTURE_1D_ARRAY_EXT
:
493 case GL_TEXTURE_2D_ARRAY_EXT
:
494 case GL_TEXTURE_CUBE_MAP_ARB
:
495 case GL_TEXTURE_RECTANGLE_NV
:
496 case GL_TEXTURE_EXTERNAL_OES
:
497 v
->value_bool
= _mesa_IsEnabled(d
->pname
);
500 case GL_LINE_STIPPLE_PATTERN
:
501 /* This is the only GLushort, special case it here by promoting
502 * to an int rather than introducing a new type. */
503 v
->value_int
= ctx
->Line
.StipplePattern
;
506 case GL_CURRENT_RASTER_TEXTURE_COORDS
:
507 unit
= ctx
->Texture
.CurrentUnit
;
508 v
->value_float_4
[0] = ctx
->Current
.RasterTexCoords
[unit
][0];
509 v
->value_float_4
[1] = ctx
->Current
.RasterTexCoords
[unit
][1];
510 v
->value_float_4
[2] = ctx
->Current
.RasterTexCoords
[unit
][2];
511 v
->value_float_4
[3] = ctx
->Current
.RasterTexCoords
[unit
][3];
514 case GL_CURRENT_TEXTURE_COORDS
:
515 unit
= ctx
->Texture
.CurrentUnit
;
516 v
->value_float_4
[0] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][0];
517 v
->value_float_4
[1] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][1];
518 v
->value_float_4
[2] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][2];
519 v
->value_float_4
[3] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][3];
522 case GL_COLOR_WRITEMASK
:
523 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[0][RCOMP
] ? 1 : 0;
524 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[0][GCOMP
] ? 1 : 0;
525 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[0][BCOMP
] ? 1 : 0;
526 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[0][ACOMP
] ? 1 : 0;
530 v
->value_bool
= ctx
->Current
.Attrib
[VERT_ATTRIB_EDGEFLAG
][0] == 1.0;
534 v
->value_enum
= ctx
->ReadBuffer
->ColorReadBuffer
;
537 case GL_MAP2_GRID_DOMAIN
:
538 v
->value_float_4
[0] = ctx
->Eval
.MapGrid2u1
;
539 v
->value_float_4
[1] = ctx
->Eval
.MapGrid2u2
;
540 v
->value_float_4
[2] = ctx
->Eval
.MapGrid2v1
;
541 v
->value_float_4
[3] = ctx
->Eval
.MapGrid2v2
;
544 case GL_TEXTURE_STACK_DEPTH
:
545 unit
= ctx
->Texture
.CurrentUnit
;
546 v
->value_int
= ctx
->TextureMatrixStack
[unit
].Depth
+ 1;
548 case GL_TEXTURE_MATRIX
:
549 unit
= ctx
->Texture
.CurrentUnit
;
550 v
->value_matrix
= ctx
->TextureMatrixStack
[unit
].Top
;
553 case GL_TEXTURE_COORD_ARRAY
:
554 case GL_TEXTURE_COORD_ARRAY_SIZE
:
555 case GL_TEXTURE_COORD_ARRAY_TYPE
:
556 case GL_TEXTURE_COORD_ARRAY_STRIDE
:
557 array
= &ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)];
558 v
->value_int
= *(GLuint
*) ((char *) array
+ d
->offset
);
561 case GL_ACTIVE_TEXTURE_ARB
:
562 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Texture
.CurrentUnit
;
564 case GL_CLIENT_ACTIVE_TEXTURE_ARB
:
565 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Array
.ActiveTexture
;
568 case GL_MODELVIEW_STACK_DEPTH
:
569 case GL_PROJECTION_STACK_DEPTH
:
570 v
->value_int
= *(GLint
*) ((char *) ctx
+ d
->offset
) + 1;
573 case GL_MAX_TEXTURE_SIZE
:
574 case GL_MAX_3D_TEXTURE_SIZE
:
575 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB
:
576 p
= (GLuint
*) ((char *) ctx
+ d
->offset
);
577 v
->value_int
= 1 << (*p
- 1);
581 v
->value_int_4
[0] = ctx
->Scissor
.X
;
582 v
->value_int_4
[1] = ctx
->Scissor
.Y
;
583 v
->value_int_4
[2] = ctx
->Scissor
.Width
;
584 v
->value_int_4
[3] = ctx
->Scissor
.Height
;
589 ctx
->ListState
.CurrentList
? ctx
->ListState
.CurrentList
->Name
: 0;
592 if (!ctx
->CompileFlag
)
594 else if (ctx
->ExecuteFlag
)
595 v
->value_enum
= GL_COMPILE_AND_EXECUTE
;
597 v
->value_enum
= GL_COMPILE
;
601 v
->value_int_4
[0] = ctx
->Viewport
.X
;
602 v
->value_int_4
[1] = ctx
->Viewport
.Y
;
603 v
->value_int_4
[2] = ctx
->Viewport
.Width
;
604 v
->value_int_4
[3] = ctx
->Viewport
.Height
;
607 case GL_ACTIVE_STENCIL_FACE_EXT
:
608 v
->value_enum
= ctx
->Stencil
.ActiveFace
? GL_BACK
: GL_FRONT
;
611 case GL_STENCIL_FAIL
:
612 v
->value_enum
= ctx
->Stencil
.FailFunc
[ctx
->Stencil
.ActiveFace
];
614 case GL_STENCIL_FUNC
:
615 v
->value_enum
= ctx
->Stencil
.Function
[ctx
->Stencil
.ActiveFace
];
617 case GL_STENCIL_PASS_DEPTH_FAIL
:
618 v
->value_enum
= ctx
->Stencil
.ZFailFunc
[ctx
->Stencil
.ActiveFace
];
620 case GL_STENCIL_PASS_DEPTH_PASS
:
621 v
->value_enum
= ctx
->Stencil
.ZPassFunc
[ctx
->Stencil
.ActiveFace
];
624 v
->value_int
= ctx
->Stencil
.Ref
[ctx
->Stencil
.ActiveFace
];
626 case GL_STENCIL_VALUE_MASK
:
627 v
->value_int
= ctx
->Stencil
.ValueMask
[ctx
->Stencil
.ActiveFace
];
629 case GL_STENCIL_WRITEMASK
:
630 v
->value_int
= ctx
->Stencil
.WriteMask
[ctx
->Stencil
.ActiveFace
];
633 case GL_NUM_EXTENSIONS
:
634 v
->value_int
= _mesa_get_extension_count(ctx
);
637 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES
:
638 v
->value_int
= _mesa_get_color_read_type(ctx
);
640 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES
:
641 v
->value_int
= _mesa_get_color_read_format(ctx
);
644 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB
:
645 v
->value_int
= ctx
->CurrentStack
->Depth
+ 1;
647 case GL_CURRENT_MATRIX_ARB
:
648 case GL_TRANSPOSE_CURRENT_MATRIX_ARB
:
649 v
->value_matrix
= ctx
->CurrentStack
->Top
;
652 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB
:
653 v
->value_int
= _mesa_get_compressed_formats(ctx
, NULL
);
655 case GL_COMPRESSED_TEXTURE_FORMATS_ARB
:
657 _mesa_get_compressed_formats(ctx
, v
->value_int_n
.ints
);
658 ASSERT(v
->value_int_n
.n
<= 100);
661 case GL_MAX_VARYING_FLOATS_ARB
:
662 v
->value_int
= ctx
->Const
.MaxVarying
* 4;
665 /* Various object names */
667 case GL_TEXTURE_BINDING_1D
:
668 case GL_TEXTURE_BINDING_2D
:
669 case GL_TEXTURE_BINDING_3D
:
670 case GL_TEXTURE_BINDING_1D_ARRAY_EXT
:
671 case GL_TEXTURE_BINDING_2D_ARRAY_EXT
:
672 case GL_TEXTURE_BINDING_CUBE_MAP_ARB
:
673 case GL_TEXTURE_BINDING_RECTANGLE_NV
:
674 case GL_TEXTURE_BINDING_EXTERNAL_OES
:
675 unit
= ctx
->Texture
.CurrentUnit
;
677 ctx
->Texture
.Unit
[unit
].CurrentTex
[d
->offset
]->Name
;
680 /* GL_ARB_vertex_buffer_object */
681 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB
:
682 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB
:
683 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB
:
684 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB
:
685 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB
:
686 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB
:
687 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB
:
688 buffer_obj
= (struct gl_buffer_object
**)
689 ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
690 v
->value_int
= (*buffer_obj
)->Name
;
692 case GL_ARRAY_BUFFER_BINDING_ARB
:
693 v
->value_int
= ctx
->Array
.ArrayBufferObj
->Name
;
695 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB
:
697 ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)].BufferObj
->Name
;
699 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB
:
700 v
->value_int
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Name
;
703 /* ARB_copy_buffer */
704 case GL_COPY_READ_BUFFER
:
705 v
->value_int
= ctx
->CopyReadBuffer
->Name
;
707 case GL_COPY_WRITE_BUFFER
:
708 v
->value_int
= ctx
->CopyWriteBuffer
->Name
;
711 case GL_FRAGMENT_PROGRAM_BINDING_NV
:
713 ctx
->FragmentProgram
.Current
? ctx
->FragmentProgram
.Current
->Base
.Id
: 0;
715 case GL_VERTEX_PROGRAM_BINDING_NV
:
717 ctx
->VertexProgram
.Current
? ctx
->VertexProgram
.Current
->Base
.Id
: 0;
719 case GL_PIXEL_PACK_BUFFER_BINDING_EXT
:
720 v
->value_int
= ctx
->Pack
.BufferObj
->Name
;
722 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT
:
723 v
->value_int
= ctx
->Unpack
.BufferObj
->Name
;
725 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
726 v
->value_int
= ctx
->TransformFeedback
.CurrentBuffer
->Name
;
728 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED
:
729 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Paused
;
731 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE
:
732 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Active
;
734 case GL_TRANSFORM_FEEDBACK_BINDING
:
735 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Name
;
737 case GL_CURRENT_PROGRAM
:
739 ctx
->Shader
.ActiveProgram
? ctx
->Shader
.ActiveProgram
->Name
: 0;
741 case GL_READ_FRAMEBUFFER_BINDING_EXT
:
742 v
->value_int
= ctx
->ReadBuffer
->Name
;
744 case GL_RENDERBUFFER_BINDING_EXT
:
746 ctx
->CurrentRenderbuffer
? ctx
->CurrentRenderbuffer
->Name
: 0;
748 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES
:
749 v
->value_int
= ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_POINT_SIZE
].BufferObj
->Name
;
753 if(ctx
->Color
._ClampFragmentColor
)
754 COPY_4FV(v
->value_float_4
, ctx
->Fog
.Color
);
756 COPY_4FV(v
->value_float_4
, ctx
->Fog
.ColorUnclamped
);
758 case GL_COLOR_CLEAR_VALUE
:
759 if(ctx
->Color
._ClampFragmentColor
) {
760 v
->value_float_4
[0] = CLAMP(ctx
->Color
.ClearColor
.f
[0], 0.0F
, 1.0F
);
761 v
->value_float_4
[1] = CLAMP(ctx
->Color
.ClearColor
.f
[1], 0.0F
, 1.0F
);
762 v
->value_float_4
[2] = CLAMP(ctx
->Color
.ClearColor
.f
[2], 0.0F
, 1.0F
);
763 v
->value_float_4
[3] = CLAMP(ctx
->Color
.ClearColor
.f
[3], 0.0F
, 1.0F
);
765 COPY_4FV(v
->value_float_4
, ctx
->Color
.ClearColor
.f
);
767 case GL_BLEND_COLOR_EXT
:
768 if(ctx
->Color
._ClampFragmentColor
)
769 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColor
);
771 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColorUnclamped
);
773 case GL_ALPHA_TEST_REF
:
774 if(ctx
->Color
._ClampFragmentColor
)
775 v
->value_float
= ctx
->Color
.AlphaRef
;
777 v
->value_float
= ctx
->Color
.AlphaRefUnclamped
;
779 case GL_MAX_VERTEX_UNIFORM_VECTORS
:
780 v
->value_int
= ctx
->Const
.VertexProgram
.MaxUniformComponents
/ 4;
783 case GL_MAX_FRAGMENT_UNIFORM_VECTORS
:
784 v
->value_int
= ctx
->Const
.FragmentProgram
.MaxUniformComponents
/ 4;
787 /* GL_ARB_texture_buffer_object */
788 case GL_TEXTURE_BUFFER_ARB
:
789 v
->value_int
= ctx
->Texture
.BufferObject
->Name
;
791 case GL_TEXTURE_BINDING_BUFFER_ARB
:
792 unit
= ctx
->Texture
.CurrentUnit
;
794 ctx
->Texture
.Unit
[unit
].CurrentTex
[TEXTURE_BUFFER_INDEX
]->Name
;
796 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB
:
798 struct gl_buffer_object
*buf
=
799 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
800 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObject
;
801 v
->value_int
= buf
? buf
->Name
: 0;
804 case GL_TEXTURE_BUFFER_FORMAT_ARB
:
805 v
->value_int
= ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
806 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObjectFormat
;
809 /* GL_ARB_sampler_objects */
810 case GL_SAMPLER_BINDING
:
812 struct gl_sampler_object
*samp
=
813 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
].Sampler
;
814 v
->value_int
= samp
? samp
->Name
: 0;
817 /* GL_ARB_uniform_buffer_object */
818 case GL_UNIFORM_BUFFER_BINDING
:
819 v
->value_int
= ctx
->UniformBuffer
->Name
;
821 /* GL_ARB_timer_query */
823 if (ctx
->Driver
.GetTimestamp
) {
824 v
->value_int64
= ctx
->Driver
.GetTimestamp(ctx
);
827 _mesa_problem(ctx
, "driver doesn't implement GetTimestamp");
834 * Check extra constraints on a struct value_desc descriptor
836 * If a struct value_desc has a non-NULL extra pointer, it means that
837 * there are a number of extra constraints to check or actions to
838 * perform. The extras is just an integer array where each integer
839 * encode different constraints or actions.
841 * \param ctx current context
842 * \param func name of calling glGet*v() function for error reporting
843 * \param d the struct value_desc that has the extra constraints
845 * \return GL_FALSE if one of the constraints was not satisfied,
849 check_extra(struct gl_context
*ctx
, const char *func
, const struct value_desc
*d
)
851 const GLuint version
= ctx
->Version
;
857 for (e
= d
->extra
; *e
!= EXTRA_END
; e
++)
859 case EXTRA_VERSION_30
:
865 case EXTRA_VERSION_31
:
871 case EXTRA_VERSION_32
:
877 case EXTRA_NEW_FRAG_CLAMP
:
878 if (ctx
->NewState
& (_NEW_BUFFERS
| _NEW_FRAG_CLAMP
))
879 _mesa_update_state(ctx
);
882 if (ctx
->API
== API_OPENGLES2
) {
888 if (_mesa_is_desktop_gl(ctx
)) {
893 case EXTRA_NEW_BUFFERS
:
894 if (ctx
->NewState
& _NEW_BUFFERS
)
895 _mesa_update_state(ctx
);
897 case EXTRA_FLUSH_CURRENT
:
898 FLUSH_CURRENT(ctx
, 0);
900 case EXTRA_VALID_DRAW_BUFFER
:
901 if (d
->pname
- GL_DRAW_BUFFER0_ARB
>= ctx
->Const
.MaxDrawBuffers
) {
902 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(draw buffer %u)",
903 func
, d
->pname
- GL_DRAW_BUFFER0_ARB
);
907 case EXTRA_VALID_TEXTURE_UNIT
:
908 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
909 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(texture %u)",
910 func
, ctx
->Texture
.CurrentUnit
);
914 case EXTRA_VALID_CLIP_DISTANCE
:
915 if (d
->pname
- GL_CLIP_DISTANCE0
>= ctx
->Const
.MaxClipPlanes
) {
916 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(clip distance %u)",
917 func
, d
->pname
- GL_CLIP_DISTANCE0
);
922 if (ctx
->Const
.GLSLVersion
>= 130) {
929 default: /* *e is a offset into the extension struct */
931 if (*(GLboolean
*) ((char *) &ctx
->Extensions
+ *e
))
936 if (total
> 0 && enabled
== 0) {
937 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
938 _mesa_lookup_enum_by_nr(d
->pname
));
945 static const struct value_desc error_value
=
946 { 0, 0, TYPE_INVALID
, NO_OFFSET
, NO_EXTRA
};
949 * Find the struct value_desc corresponding to the enum 'pname'.
951 * We hash the enum value to get an index into the 'table' array,
952 * which holds the index in the 'values' array of struct value_desc.
953 * Once we've found the entry, we do the extra checks, if any, then
954 * look up the value and return a pointer to it.
956 * If the value has to be computed (for example, it's the result of a
957 * function call or we need to add 1 to it), we use the tmp 'v' to
960 * \param func name of glGet*v() func for error reporting
961 * \param pname the enum value we're looking up
962 * \param p is were we return the pointer to the value
963 * \param v a tmp union value variable in the calling glGet*v() function
965 * \return the struct value_desc corresponding to the enum or a struct
966 * value_desc of TYPE_INVALID if not found. This lets the calling
967 * glGet*v() function jump right into a switch statement and
968 * handle errors there instead of having to check for NULL.
970 static const struct value_desc
*
971 find_value(const char *func
, GLenum pname
, void **p
, union value
*v
)
973 GET_CURRENT_CONTEXT(ctx
);
974 struct gl_texture_unit
*unit
;
976 const struct value_desc
*d
;
980 mask
= Elements(table(api
)) - 1;
981 hash
= (pname
* prime_factor
);
983 int idx
= table(api
)[hash
& mask
];
985 /* If the enum isn't valid, the hash walk ends with index 0,
986 * pointing to the first entry of values[] which doesn't hold
988 if (unlikely(idx
== 0)) {
989 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
990 _mesa_lookup_enum_by_nr(pname
));
995 if (likely(d
->pname
== pname
))
1001 if (unlikely(d
->extra
&& !check_extra(ctx
, func
, d
)))
1002 return &error_value
;
1004 switch (d
->location
) {
1006 *p
= ((char *) ctx
->DrawBuffer
+ d
->offset
);
1009 *p
= ((char *) ctx
+ d
->offset
);
1012 *p
= ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
1015 unit
= &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
1016 *p
= ((char *) unit
+ d
->offset
);
1019 find_custom_value(ctx
, d
, v
);
1027 /* silence warning */
1028 return &error_value
;
1031 static const int transpose
[] = {
1039 _mesa_GetBooleanv(GLenum pname
, GLboolean
*params
)
1041 const struct value_desc
*d
;
1046 GET_CURRENT_CONTEXT(ctx
);
1048 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1050 d
= find_value("glGetBooleanv", pname
, &p
, &v
);
1055 params
[0] = INT_TO_BOOLEAN(d
->offset
);
1060 params
[3] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[3]);
1063 params
[2] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[2]);
1066 params
[1] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[1]);
1069 params
[0] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[0]);
1073 params
[0] = FLOAT_TO_BOOLEAN(((GLdouble
*) p
)[0]);
1077 params
[3] = INT_TO_BOOLEAN(((GLint
*) p
)[3]);
1079 params
[2] = INT_TO_BOOLEAN(((GLint
*) p
)[2]);
1082 params
[1] = INT_TO_BOOLEAN(((GLint
*) p
)[1]);
1085 params
[0] = INT_TO_BOOLEAN(((GLint
*) p
)[0]);
1089 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1090 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1094 params
[0] = INT64_TO_BOOLEAN(((GLint64
*) p
)[0]);
1098 params
[0] = ((GLboolean
*) p
)[0];
1102 m
= *(GLmatrix
**) p
;
1103 for (i
= 0; i
< 16; i
++)
1104 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[i
]);
1108 m
= *(GLmatrix
**) p
;
1109 for (i
= 0; i
< 16; i
++)
1110 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[transpose
[i
]]);
1121 shift
= d
->type
- TYPE_BIT_0
;
1122 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1128 _mesa_GetFloatv(GLenum pname
, GLfloat
*params
)
1130 const struct value_desc
*d
;
1135 GET_CURRENT_CONTEXT(ctx
);
1137 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1139 d
= find_value("glGetFloatv", pname
, &p
, &v
);
1144 params
[0] = (GLfloat
) d
->offset
;
1149 params
[3] = ((GLfloat
*) p
)[3];
1152 params
[2] = ((GLfloat
*) p
)[2];
1155 params
[1] = ((GLfloat
*) p
)[1];
1158 params
[0] = ((GLfloat
*) p
)[0];
1162 params
[0] = ((GLdouble
*) p
)[0];
1166 params
[3] = (GLfloat
) (((GLint
*) p
)[3]);
1168 params
[2] = (GLfloat
) (((GLint
*) p
)[2]);
1171 params
[1] = (GLfloat
) (((GLint
*) p
)[1]);
1174 params
[0] = (GLfloat
) (((GLint
*) p
)[0]);
1178 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1179 params
[i
] = INT_TO_FLOAT(v
.value_int_n
.ints
[i
]);
1183 params
[0] = ((GLint64
*) p
)[0];
1187 params
[0] = BOOLEAN_TO_FLOAT(*(GLboolean
*) p
);
1191 m
= *(GLmatrix
**) p
;
1192 for (i
= 0; i
< 16; i
++)
1193 params
[i
] = m
->m
[i
];
1197 m
= *(GLmatrix
**) p
;
1198 for (i
= 0; i
< 16; i
++)
1199 params
[i
] = m
->m
[transpose
[i
]];
1210 shift
= d
->type
- TYPE_BIT_0
;
1211 params
[0] = BOOLEAN_TO_FLOAT((*(GLbitfield
*) p
>> shift
) & 1);
1217 _mesa_GetIntegerv(GLenum pname
, GLint
*params
)
1219 const struct value_desc
*d
;
1224 GET_CURRENT_CONTEXT(ctx
);
1226 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1228 d
= find_value("glGetIntegerv", pname
, &p
, &v
);
1233 params
[0] = d
->offset
;
1237 params
[3] = IROUND(((GLfloat
*) p
)[3]);
1239 params
[2] = IROUND(((GLfloat
*) p
)[2]);
1241 params
[1] = IROUND(((GLfloat
*) p
)[1]);
1243 params
[0] = IROUND(((GLfloat
*) p
)[0]);
1247 params
[3] = FLOAT_TO_INT(((GLfloat
*) p
)[3]);
1249 params
[2] = FLOAT_TO_INT(((GLfloat
*) p
)[2]);
1251 params
[1] = FLOAT_TO_INT(((GLfloat
*) p
)[1]);
1253 params
[0] = FLOAT_TO_INT(((GLfloat
*) p
)[0]);
1257 params
[0] = FLOAT_TO_INT(((GLdouble
*) p
)[0]);
1261 params
[3] = ((GLint
*) p
)[3];
1263 params
[2] = ((GLint
*) p
)[2];
1266 params
[1] = ((GLint
*) p
)[1];
1269 params
[0] = ((GLint
*) p
)[0];
1273 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1274 params
[i
] = v
.value_int_n
.ints
[i
];
1278 params
[0] = INT64_TO_INT(((GLint64
*) p
)[0]);
1282 params
[0] = BOOLEAN_TO_INT(*(GLboolean
*) p
);
1286 m
= *(GLmatrix
**) p
;
1287 for (i
= 0; i
< 16; i
++)
1288 params
[i
] = FLOAT_TO_INT(m
->m
[i
]);
1292 m
= *(GLmatrix
**) p
;
1293 for (i
= 0; i
< 16; i
++)
1294 params
[i
] = FLOAT_TO_INT(m
->m
[transpose
[i
]]);
1305 shift
= d
->type
- TYPE_BIT_0
;
1306 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1312 _mesa_GetInteger64v(GLenum pname
, GLint64
*params
)
1314 const struct value_desc
*d
;
1319 GET_CURRENT_CONTEXT(ctx
);
1321 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1323 d
= find_value("glGetInteger64v", pname
, &p
, &v
);
1328 params
[0] = d
->offset
;
1332 params
[3] = IROUND64(((GLfloat
*) p
)[3]);
1334 params
[2] = IROUND64(((GLfloat
*) p
)[2]);
1336 params
[1] = IROUND64(((GLfloat
*) p
)[1]);
1338 params
[0] = IROUND64(((GLfloat
*) p
)[0]);
1342 params
[3] = FLOAT_TO_INT64(((GLfloat
*) p
)[3]);
1344 params
[2] = FLOAT_TO_INT64(((GLfloat
*) p
)[2]);
1346 params
[1] = FLOAT_TO_INT64(((GLfloat
*) p
)[1]);
1348 params
[0] = FLOAT_TO_INT64(((GLfloat
*) p
)[0]);
1352 params
[0] = FLOAT_TO_INT64(((GLdouble
*) p
)[0]);
1356 params
[3] = ((GLint
*) p
)[3];
1358 params
[2] = ((GLint
*) p
)[2];
1361 params
[1] = ((GLint
*) p
)[1];
1364 params
[0] = ((GLint
*) p
)[0];
1368 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1369 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1373 params
[0] = ((GLint64
*) p
)[0];
1377 params
[0] = ((GLboolean
*) p
)[0];
1381 m
= *(GLmatrix
**) p
;
1382 for (i
= 0; i
< 16; i
++)
1383 params
[i
] = FLOAT_TO_INT64(m
->m
[i
]);
1387 m
= *(GLmatrix
**) p
;
1388 for (i
= 0; i
< 16; i
++)
1389 params
[i
] = FLOAT_TO_INT64(m
->m
[transpose
[i
]]);
1400 shift
= d
->type
- TYPE_BIT_0
;
1401 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1407 _mesa_GetDoublev(GLenum pname
, GLdouble
*params
)
1409 const struct value_desc
*d
;
1414 GET_CURRENT_CONTEXT(ctx
);
1416 ASSERT_OUTSIDE_BEGIN_END(ctx
);
1418 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1423 params
[0] = d
->offset
;
1428 params
[3] = ((GLfloat
*) p
)[3];
1431 params
[2] = ((GLfloat
*) p
)[2];
1434 params
[1] = ((GLfloat
*) p
)[1];
1437 params
[0] = ((GLfloat
*) p
)[0];
1441 params
[0] = ((GLdouble
*) p
)[0];
1445 params
[3] = ((GLint
*) p
)[3];
1447 params
[2] = ((GLint
*) p
)[2];
1450 params
[1] = ((GLint
*) p
)[1];
1453 params
[0] = ((GLint
*) p
)[0];
1457 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1458 params
[i
] = v
.value_int_n
.ints
[i
];
1462 params
[0] = ((GLint64
*) p
)[0];
1466 params
[0] = *(GLboolean
*) p
;
1470 m
= *(GLmatrix
**) p
;
1471 for (i
= 0; i
< 16; i
++)
1472 params
[i
] = m
->m
[i
];
1476 m
= *(GLmatrix
**) p
;
1477 for (i
= 0; i
< 16; i
++)
1478 params
[i
] = m
->m
[transpose
[i
]];
1489 shift
= d
->type
- TYPE_BIT_0
;
1490 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1495 static enum value_type
1496 find_value_indexed(const char *func
, GLenum pname
, int index
, union value
*v
)
1498 GET_CURRENT_CONTEXT(ctx
);
1503 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1505 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1507 v
->value_int
= (ctx
->Color
.BlendEnabled
>> index
) & 1;
1512 case GL_BLEND_SRC_RGB
:
1513 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1515 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1517 v
->value_int
= ctx
->Color
.Blend
[index
].SrcRGB
;
1519 case GL_BLEND_SRC_ALPHA
:
1520 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1522 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1524 v
->value_int
= ctx
->Color
.Blend
[index
].SrcA
;
1528 case GL_BLEND_DST_RGB
:
1529 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1531 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1533 v
->value_int
= ctx
->Color
.Blend
[index
].DstRGB
;
1535 case GL_BLEND_DST_ALPHA
:
1536 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1538 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1540 v
->value_int
= ctx
->Color
.Blend
[index
].DstA
;
1542 case GL_BLEND_EQUATION_RGB
:
1543 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1545 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1547 v
->value_int
= ctx
->Color
.Blend
[index
].EquationRGB
;
1549 case GL_BLEND_EQUATION_ALPHA
:
1550 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1552 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1554 v
->value_int
= ctx
->Color
.Blend
[index
].EquationA
;
1557 case GL_COLOR_WRITEMASK
:
1558 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1560 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1562 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[index
][RCOMP
] ? 1 : 0;
1563 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[index
][GCOMP
] ? 1 : 0;
1564 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[index
][BCOMP
] ? 1 : 0;
1565 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[index
][ACOMP
] ? 1 : 0;
1568 case GL_TRANSFORM_FEEDBACK_BUFFER_START
:
1569 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1571 if (!ctx
->Extensions
.EXT_transform_feedback
)
1573 v
->value_int64
= ctx
->TransformFeedback
.CurrentObject
->Offset
[index
];
1576 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE
:
1577 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1579 if (!ctx
->Extensions
.EXT_transform_feedback
)
1581 v
->value_int64
= ctx
->TransformFeedback
.CurrentObject
->Size
[index
];
1584 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
1585 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1587 if (!ctx
->Extensions
.EXT_transform_feedback
)
1589 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->BufferNames
[index
];
1592 case GL_UNIFORM_BUFFER_BINDING
:
1593 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1595 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1597 v
->value_int
= ctx
->UniformBufferBindings
[index
].BufferObject
->Name
;
1600 case GL_UNIFORM_BUFFER_START
:
1601 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1603 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1605 v
->value_int
= ctx
->UniformBufferBindings
[index
].Offset
;
1608 case GL_UNIFORM_BUFFER_SIZE
:
1609 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1611 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1613 v
->value_int
= ctx
->UniformBufferBindings
[index
].Size
;
1618 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1619 _mesa_lookup_enum_by_nr(pname
));
1620 return TYPE_INVALID
;
1622 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(pname=%s)", func
,
1623 _mesa_lookup_enum_by_nr(pname
));
1624 return TYPE_INVALID
;
1628 _mesa_GetBooleanIndexedv( GLenum pname
, GLuint index
, GLboolean
*params
)
1631 enum value_type type
=
1632 find_value_indexed("glGetBooleanIndexedv", pname
, index
, &v
);
1636 params
[0] = INT_TO_BOOLEAN(v
.value_int
);
1639 params
[0] = INT_TO_BOOLEAN(v
.value_int_4
[0]);
1640 params
[1] = INT_TO_BOOLEAN(v
.value_int_4
[1]);
1641 params
[2] = INT_TO_BOOLEAN(v
.value_int_4
[2]);
1642 params
[3] = INT_TO_BOOLEAN(v
.value_int_4
[3]);
1645 params
[0] = INT64_TO_BOOLEAN(v
.value_int
);
1648 ; /* nothing - GL error was recorded */
1653 _mesa_GetIntegerIndexedv( GLenum pname
, GLuint index
, GLint
*params
)
1656 enum value_type type
=
1657 find_value_indexed("glGetIntegerIndexedv", pname
, index
, &v
);
1661 params
[0] = v
.value_int
;
1664 params
[0] = v
.value_int_4
[0];
1665 params
[1] = v
.value_int_4
[1];
1666 params
[2] = v
.value_int_4
[2];
1667 params
[3] = v
.value_int_4
[3];
1670 params
[0] = INT64_TO_INT(v
.value_int
);
1673 ; /* nothing - GL error was recorded */
1678 _mesa_GetInteger64Indexedv( GLenum pname
, GLuint index
, GLint64
*params
)
1681 enum value_type type
=
1682 find_value_indexed("glGetIntegerIndexedv", pname
, index
, &v
);
1686 params
[0] = v
.value_int
;
1689 params
[0] = v
.value_int_4
[0];
1690 params
[1] = v
.value_int_4
[1];
1691 params
[2] = v
.value_int_4
[2];
1692 params
[3] = v
.value_int_4
[3];
1695 params
[0] = v
.value_int
;
1698 ; /* nothing - GL error was recorded */
1704 _mesa_GetFixedv(GLenum pname
, GLfixed
*params
)
1706 const struct value_desc
*d
;
1712 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1717 params
[0] = INT_TO_FIXED(d
->offset
);
1722 params
[3] = FLOAT_TO_FIXED(((GLfloat
*) p
)[3]);
1725 params
[2] = FLOAT_TO_FIXED(((GLfloat
*) p
)[2]);
1728 params
[1] = FLOAT_TO_FIXED(((GLfloat
*) p
)[1]);
1731 params
[0] = FLOAT_TO_FIXED(((GLfloat
*) p
)[0]);
1735 params
[0] = FLOAT_TO_FIXED(((GLdouble
*) p
)[0]);
1739 params
[3] = INT_TO_FIXED(((GLint
*) p
)[3]);
1741 params
[2] = INT_TO_FIXED(((GLint
*) p
)[2]);
1744 params
[1] = INT_TO_FIXED(((GLint
*) p
)[1]);
1747 params
[0] = INT_TO_FIXED(((GLint
*) p
)[0]);
1751 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1752 params
[i
] = INT_TO_FIXED(v
.value_int_n
.ints
[i
]);
1756 params
[0] = ((GLint64
*) p
)[0];
1760 params
[0] = BOOLEAN_TO_FIXED(((GLboolean
*) p
)[0]);
1764 m
= *(GLmatrix
**) p
;
1765 for (i
= 0; i
< 16; i
++)
1766 params
[i
] = FLOAT_TO_FIXED(m
->m
[i
]);
1770 m
= *(GLmatrix
**) p
;
1771 for (i
= 0; i
< 16; i
++)
1772 params
[i
] = FLOAT_TO_FIXED(m
->m
[transpose
[i
]]);
1783 shift
= d
->type
- TYPE_BIT_0
;
1784 params
[0] = BOOLEAN_TO_FIXED((*(GLbitfield
*) p
>> shift
) & 1);