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 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
23 * Author: Kristian Høgsberg <krh@bitplanet.net>
31 #include "extensions.h"
36 #include "texcompress.h"
37 #include "framebuffer.h"
38 #include "samplerobj.h"
41 /* This is a table driven implemetation of the glGet*v() functions.
42 * The basic idea is that most getters just look up an int somewhere
43 * in struct gl_context and then convert it to a bool or float according to
44 * which of glGetIntegerv() glGetBooleanv() etc is being called.
45 * Instead of generating code to do this, we can just record the enum
46 * value and the offset into struct gl_context in an array of structs. Then
47 * in glGet*(), we lookup the struct for the enum in question, and use
48 * the offset to get the int we need.
50 * Sometimes we need to look up a float, a boolean, a bit in a
51 * bitfield, a matrix or other types instead, so we need to track the
52 * type of the value in struct gl_context. And sometimes the value isn't in
53 * struct gl_context but in the drawbuffer, the array object, current texture
54 * unit, or maybe it's a computed value. So we need to also track
55 * where or how to find the value. Finally, we sometimes need to
56 * check that one of a number of extensions are enabled, the GL
57 * version or flush or call _mesa_update_state(). This is done by
58 * attaching optional extra information to the value description
59 * struct, it's sort of like an array of opcodes that describe extra
62 * Putting all this together we end up with struct value_desc below,
63 * and with a couple of macros to help, the table of struct value_desc
64 * is about as concise as the specification in the old python script.
67 #define FLOAT_TO_BOOLEAN(X) ( (X) ? GL_TRUE : GL_FALSE )
68 #define FLOAT_TO_FIXED(F) ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \
69 ((F) * 65536.0f < INT_MIN) ? INT_MIN : \
70 (GLint) ((F) * 65536.0f) )
72 #define INT_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
73 #define INT_TO_FIXED(I) ( ((I) > SHRT_MAX) ? INT_MAX : \
74 ((I) < SHRT_MIN) ? INT_MIN : \
75 (GLint) ((I) * 65536) )
77 #define INT64_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
78 #define INT64_TO_INT(I) ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )
80 #define BOOLEAN_TO_INT(B) ( (GLint) (B) )
81 #define BOOLEAN_TO_INT64(B) ( (GLint64) (B) )
82 #define BOOLEAN_TO_FLOAT(B) ( (B) ? 1.0F : 0.0F )
83 #define BOOLEAN_TO_FIXED(B) ( (GLint) ((B) ? 1 : 0) << 16 )
85 #define ENUM_TO_INT64(E) ( (GLint64) (E) )
86 #define ENUM_TO_FIXED(E) (E)
122 enum value_location
{
141 EXTRA_NEW_FRAG_CLAMP
,
142 EXTRA_VALID_DRAW_BUFFER
,
143 EXTRA_VALID_TEXTURE_UNIT
,
144 EXTRA_VALID_CLIP_DISTANCE
,
148 EXTRA_EXT_ATOMICS_GS4
,
149 EXTRA_EXT_SHADER_IMAGE_GS4
,
152 #define NO_EXTRA NULL
157 GLubyte location
; /**< enum value_location */
158 GLubyte type
; /**< enum value_type */
165 GLfloat value_float_4
[4];
166 GLdouble value_double_2
[2];
167 GLmatrix
*value_matrix
;
169 GLint value_int_4
[4];
173 /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
177 GLboolean value_bool
;
180 #define BUFFER_FIELD(field, type) \
181 LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
182 #define CONTEXT_FIELD(field, type) \
183 LOC_CONTEXT, type, offsetof(struct gl_context, field)
184 #define ARRAY_FIELD(field, type) \
185 LOC_ARRAY, type, offsetof(struct gl_array_object, field)
186 #undef CONST /* already defined through windows.h */
187 #define CONST(value) \
188 LOC_CONTEXT, TYPE_CONST, value
190 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
191 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
192 #define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
194 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
195 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
196 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
197 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
198 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
199 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
200 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
201 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
202 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
203 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
204 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
205 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
206 #define CONTEXT_BIT6(field) CONTEXT_FIELD(field, TYPE_BIT_6)
207 #define CONTEXT_BIT7(field) CONTEXT_FIELD(field, TYPE_BIT_7)
208 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
209 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
210 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
211 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
212 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
213 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
215 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
216 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
217 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
220 offsetof(struct gl_extensions, f)
222 #define EXTRA_EXT(e) \
223 static const int extra_##e[] = { \
227 #define EXTRA_EXT2(e1, e2) \
228 static const int extra_##e1##_##e2[] = { \
229 EXT(e1), EXT(e2), EXTRA_END \
232 /* The 'extra' mechanism is a way to specify extra checks (such as
233 * extensions or specific gl versions) or actions (flush current, new
234 * buffers) that we need to do before looking up an enum. We need to
235 * declare them all up front so we can refer to them in the value_desc
238 * Each EXTRA_ will be executed. For EXTRA_* enums of extensions and API
239 * versions, listing multiple ones in an array means an error will be thrown
240 * only if none of them are available. If you need to check for "AND"
241 * behavior, you would need to make a custom EXTRA_ enum.
244 static const int extra_new_buffers
[] = {
249 static const int extra_new_frag_clamp
[] = {
250 EXTRA_NEW_FRAG_CLAMP
,
254 static const int extra_valid_draw_buffer
[] = {
255 EXTRA_VALID_DRAW_BUFFER
,
259 static const int extra_valid_texture_unit
[] = {
260 EXTRA_VALID_TEXTURE_UNIT
,
264 static const int extra_valid_clip_distance
[] = {
265 EXTRA_VALID_CLIP_DISTANCE
,
269 static const int extra_flush_current_valid_texture_unit
[] = {
271 EXTRA_VALID_TEXTURE_UNIT
,
275 static const int extra_flush_current
[] = {
280 static const int extra_EXT_texture_integer
[] = {
281 EXT(EXT_texture_integer
),
285 static const int extra_EXT_texture_integer_and_new_buffers
[] = {
286 EXT(EXT_texture_integer
),
291 static const int extra_GLSL_130_es3
[] = {
297 static const int extra_texture_buffer_object
[] = {
300 EXT(ARB_texture_buffer_object
),
304 static const int extra_ARB_transform_feedback2_api_es3
[] = {
305 EXT(ARB_transform_feedback2
),
310 static const int extra_ARB_uniform_buffer_object_and_geometry_shader
[] = {
315 static const int extra_ARB_ES2_compatibility_api_es2
[] = {
316 EXT(ARB_ES2_compatibility
),
321 static const int extra_ARB_ES3_compatibility_api_es3
[] = {
322 EXT(ARB_ES3_compatibility
),
327 static const int extra_EXT_framebuffer_sRGB_and_new_buffers
[] = {
328 EXT(EXT_framebuffer_sRGB
),
333 static const int extra_EXT_packed_float
[] = {
334 EXT(EXT_packed_float
),
339 static const int extra_EXT_texture_array_es3
[] = {
340 EXT(EXT_texture_array
),
345 static const int extra_ARB_shader_atomic_counters_and_geometry_shader
[] = {
346 EXTRA_EXT_ATOMICS_GS4
,
350 static const int extra_ARB_shader_image_load_store_and_geometry_shader
[] = {
351 EXTRA_EXT_SHADER_IMAGE_GS4
,
355 EXTRA_EXT(ARB_texture_cube_map
);
356 EXTRA_EXT(EXT_texture_array
);
357 EXTRA_EXT(NV_fog_distance
);
358 EXTRA_EXT(EXT_texture_filter_anisotropic
);
359 EXTRA_EXT(NV_point_sprite
);
360 EXTRA_EXT(NV_texture_rectangle
);
361 EXTRA_EXT(EXT_stencil_two_side
);
362 EXTRA_EXT(EXT_depth_bounds_test
);
363 EXTRA_EXT(ARB_depth_clamp
);
364 EXTRA_EXT(ATI_fragment_shader
);
365 EXTRA_EXT(EXT_framebuffer_blit
);
366 EXTRA_EXT(EXT_provoking_vertex
);
367 EXTRA_EXT(ARB_fragment_shader
);
368 EXTRA_EXT(ARB_fragment_program
);
369 EXTRA_EXT2(ARB_framebuffer_object
, EXT_framebuffer_multisample
);
370 EXTRA_EXT(ARB_seamless_cube_map
);
372 EXTRA_EXT(ARB_vertex_shader
);
373 EXTRA_EXT(EXT_transform_feedback
);
374 EXTRA_EXT(ARB_transform_feedback3
);
375 EXTRA_EXT(EXT_pixel_buffer_object
);
376 EXTRA_EXT(ARB_vertex_program
);
377 EXTRA_EXT2(NV_point_sprite
, ARB_point_sprite
);
378 EXTRA_EXT2(ARB_vertex_program
, ARB_fragment_program
);
379 EXTRA_EXT(ARB_geometry_shader4
);
380 EXTRA_EXT(ARB_color_buffer_float
);
381 EXTRA_EXT(EXT_framebuffer_sRGB
);
382 EXTRA_EXT(OES_EGL_image_external
);
383 EXTRA_EXT(ARB_blend_func_extended
);
384 EXTRA_EXT(ARB_uniform_buffer_object
);
385 EXTRA_EXT(ARB_timer_query
);
386 EXTRA_EXT(ARB_map_buffer_alignment
);
387 EXTRA_EXT(ARB_texture_cube_map_array
);
388 EXTRA_EXT(ARB_texture_buffer_range
);
389 EXTRA_EXT(ARB_texture_multisample
);
390 EXTRA_EXT(ARB_texture_gather
);
391 EXTRA_EXT(ARB_shader_atomic_counters
);
392 EXTRA_EXT(ARB_draw_indirect
);
393 EXTRA_EXT(ARB_shader_image_load_store
);
396 extra_ARB_color_buffer_float_or_glcore
[] = {
397 EXT(ARB_color_buffer_float
),
403 extra_NV_primitive_restart
[] = {
404 EXT(NV_primitive_restart
),
408 static const int extra_version_30
[] = { EXTRA_VERSION_30
, EXTRA_END
};
409 static const int extra_version_31
[] = { EXTRA_VERSION_31
, EXTRA_END
};
410 static const int extra_version_32
[] = { EXTRA_VERSION_32
, EXTRA_END
};
411 static const int extra_version_40
[] = { EXTRA_VERSION_40
, EXTRA_END
};
413 static const int extra_gl30_es3
[] = {
419 static const int extra_gl32_es3
[] = {
425 static const int extra_gl32_ARB_geometry_shader4
[] = {
427 EXT(ARB_geometry_shader4
),
431 static const int extra_gl40_ARB_sample_shading
[] = {
433 EXT(ARB_sample_shading
),
438 extra_ARB_vertex_program_api_es2
[] = {
439 EXT(ARB_vertex_program
),
444 /* The ReadBuffer get token is valid under either full GL or under
445 * GLES2 if the NV_read_buffer extension is available. */
447 extra_NV_read_buffer_api_gl
[] = {
453 static const int extra_core_ARB_color_buffer_float_and_new_buffers
[] = {
455 EXT(ARB_color_buffer_float
),
460 /* This is the big table describing all the enums we accept in
461 * glGet*v(). The table is partitioned into six parts: enums
462 * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
463 * between OpenGL and GLES, enums exclusive to GLES, etc for the
464 * remaining combinations. To look up the enums valid in a given API
465 * we will use a hash table specific to that API. These tables are in
466 * turn generated at build time and included through get_hash.h.
469 #include "get_hash.h"
471 /* All we need now is a way to look up the value struct from the enum.
472 * The code generated by gcc for the old generated big switch
473 * statement is a big, balanced, open coded if/else tree, essentially
474 * an unrolled binary search. It would be natural to sort the new
475 * enum table and use bsearch(), but we will use a read-only hash
476 * table instead. bsearch() has a nice guaranteed worst case
477 * performance, but we're also guaranteed to hit that worst case
478 * (log2(n) iterations) for about half the enums. Instead, using an
479 * open addressing hash table, we can find the enum on the first try
480 * for 80% of the enums, 1 collision for 10% and never more than 5
481 * collisions for any enum (typical numbers). And the code is very
482 * simple, even though it feels a little magic. */
486 print_table_stats(int api
)
488 int i
, j
, collisions
[11], count
, hash
, mask
;
489 const struct value_desc
*d
;
490 const char *api_names
[] = {
491 [API_OPENGL_COMPAT
] = "GL",
492 [API_OPENGL_CORE
] = "GL_CORE",
493 [API_OPENGLES
] = "GLES",
494 [API_OPENGLES2
] = "GLES2",
496 const char *api_name
;
498 api_name
= api
< Elements(api_names
) ? api_names
[api
] : "N/A";
500 mask
= Elements(table(api
)) - 1;
501 memset(collisions
, 0, sizeof collisions
);
503 for (i
= 0; i
< Elements(table(api
)); i
++) {
507 d
= &values
[table(api
)[i
]];
508 hash
= (d
->pname
* prime_factor
);
511 if (values
[table(api
)[hash
& mask
]].pname
== d
->pname
)
523 printf("number of enums for %s: %d (total %ld)\n",
524 api_name
, count
, Elements(values
));
525 for (i
= 0; i
< Elements(collisions
) - 1; i
++)
526 if (collisions
[i
] > 0)
527 printf(" %d enums with %d %scollisions\n",
528 collisions
[i
], i
, i
== 10 ? "or more " : "");
533 * Initialize the enum hash for a given API
535 * This is called from one_time_init() to insert the enum values that
536 * are valid for the API in question into the enum hash table.
538 * \param the current context, for determining the API in question
540 void _mesa_init_get_hash(struct gl_context
*ctx
)
543 print_table_stats(ctx
->API
);
550 * Handle irregular enums
552 * Some values don't conform to the "well-known type at context
553 * pointer + offset" pattern, so we have this function to catch all
554 * the corner cases. Typically, it's a computed value or a one-off
555 * pointer to a custom struct or something.
557 * In this case we can't return a pointer to the value, so we'll have
558 * to use the temporary variable 'v' declared back in the calling
559 * glGet*v() function to store the result.
561 * \param ctx the current context
562 * \param d the struct value_desc that describes the enum
563 * \param v pointer to the tmp declared in the calling glGet*v() function
566 find_custom_value(struct gl_context
*ctx
, const struct value_desc
*d
, union value
*v
)
568 struct gl_buffer_object
**buffer_obj
;
569 struct gl_vertex_attrib_array
*array
;
573 case GL_MAJOR_VERSION
:
574 v
->value_int
= ctx
->Version
/ 10;
576 case GL_MINOR_VERSION
:
577 v
->value_int
= ctx
->Version
% 10;
583 case GL_TEXTURE_CUBE_MAP_ARB
:
584 case GL_TEXTURE_RECTANGLE_NV
:
585 case GL_TEXTURE_EXTERNAL_OES
:
586 v
->value_bool
= _mesa_IsEnabled(d
->pname
);
589 case GL_LINE_STIPPLE_PATTERN
:
590 /* This is the only GLushort, special case it here by promoting
591 * to an int rather than introducing a new type. */
592 v
->value_int
= ctx
->Line
.StipplePattern
;
595 case GL_CURRENT_RASTER_TEXTURE_COORDS
:
596 unit
= ctx
->Texture
.CurrentUnit
;
597 v
->value_float_4
[0] = ctx
->Current
.RasterTexCoords
[unit
][0];
598 v
->value_float_4
[1] = ctx
->Current
.RasterTexCoords
[unit
][1];
599 v
->value_float_4
[2] = ctx
->Current
.RasterTexCoords
[unit
][2];
600 v
->value_float_4
[3] = ctx
->Current
.RasterTexCoords
[unit
][3];
603 case GL_CURRENT_TEXTURE_COORDS
:
604 unit
= ctx
->Texture
.CurrentUnit
;
605 v
->value_float_4
[0] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][0];
606 v
->value_float_4
[1] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][1];
607 v
->value_float_4
[2] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][2];
608 v
->value_float_4
[3] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][3];
611 case GL_COLOR_WRITEMASK
:
612 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[0][RCOMP
] ? 1 : 0;
613 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[0][GCOMP
] ? 1 : 0;
614 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[0][BCOMP
] ? 1 : 0;
615 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[0][ACOMP
] ? 1 : 0;
619 v
->value_bool
= ctx
->Current
.Attrib
[VERT_ATTRIB_EDGEFLAG
][0] == 1.0;
623 v
->value_enum
= ctx
->ReadBuffer
->ColorReadBuffer
;
626 case GL_MAP2_GRID_DOMAIN
:
627 v
->value_float_4
[0] = ctx
->Eval
.MapGrid2u1
;
628 v
->value_float_4
[1] = ctx
->Eval
.MapGrid2u2
;
629 v
->value_float_4
[2] = ctx
->Eval
.MapGrid2v1
;
630 v
->value_float_4
[3] = ctx
->Eval
.MapGrid2v2
;
633 case GL_TEXTURE_STACK_DEPTH
:
634 unit
= ctx
->Texture
.CurrentUnit
;
635 v
->value_int
= ctx
->TextureMatrixStack
[unit
].Depth
+ 1;
637 case GL_TEXTURE_MATRIX
:
638 unit
= ctx
->Texture
.CurrentUnit
;
639 v
->value_matrix
= ctx
->TextureMatrixStack
[unit
].Top
;
642 case GL_TEXTURE_COORD_ARRAY
:
643 case GL_TEXTURE_COORD_ARRAY_SIZE
:
644 case GL_TEXTURE_COORD_ARRAY_TYPE
:
645 case GL_TEXTURE_COORD_ARRAY_STRIDE
:
646 array
= &ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)];
647 v
->value_int
= *(GLuint
*) ((char *) array
+ d
->offset
);
650 case GL_ACTIVE_TEXTURE_ARB
:
651 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Texture
.CurrentUnit
;
653 case GL_CLIENT_ACTIVE_TEXTURE_ARB
:
654 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Array
.ActiveTexture
;
657 case GL_MODELVIEW_STACK_DEPTH
:
658 case GL_PROJECTION_STACK_DEPTH
:
659 v
->value_int
= *(GLint
*) ((char *) ctx
+ d
->offset
) + 1;
662 case GL_MAX_TEXTURE_SIZE
:
663 case GL_MAX_3D_TEXTURE_SIZE
:
664 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB
:
665 p
= (GLuint
*) ((char *) ctx
+ d
->offset
);
666 v
->value_int
= 1 << (*p
- 1);
670 v
->value_int_4
[0] = ctx
->Scissor
.ScissorArray
[0].X
;
671 v
->value_int_4
[1] = ctx
->Scissor
.ScissorArray
[0].Y
;
672 v
->value_int_4
[2] = ctx
->Scissor
.ScissorArray
[0].Width
;
673 v
->value_int_4
[3] = ctx
->Scissor
.ScissorArray
[0].Height
;
676 case GL_SCISSOR_TEST
:
677 v
->value_bool
= ctx
->Scissor
.EnableFlags
& 1;
682 ctx
->ListState
.CurrentList
? ctx
->ListState
.CurrentList
->Name
: 0;
685 if (!ctx
->CompileFlag
)
687 else if (ctx
->ExecuteFlag
)
688 v
->value_enum
= GL_COMPILE_AND_EXECUTE
;
690 v
->value_enum
= GL_COMPILE
;
694 v
->value_int_4
[0] = ctx
->Viewport
.X
;
695 v
->value_int_4
[1] = ctx
->Viewport
.Y
;
696 v
->value_int_4
[2] = ctx
->Viewport
.Width
;
697 v
->value_int_4
[3] = ctx
->Viewport
.Height
;
700 case GL_ACTIVE_STENCIL_FACE_EXT
:
701 v
->value_enum
= ctx
->Stencil
.ActiveFace
? GL_BACK
: GL_FRONT
;
704 case GL_STENCIL_FAIL
:
705 v
->value_enum
= ctx
->Stencil
.FailFunc
[ctx
->Stencil
.ActiveFace
];
707 case GL_STENCIL_FUNC
:
708 v
->value_enum
= ctx
->Stencil
.Function
[ctx
->Stencil
.ActiveFace
];
710 case GL_STENCIL_PASS_DEPTH_FAIL
:
711 v
->value_enum
= ctx
->Stencil
.ZFailFunc
[ctx
->Stencil
.ActiveFace
];
713 case GL_STENCIL_PASS_DEPTH_PASS
:
714 v
->value_enum
= ctx
->Stencil
.ZPassFunc
[ctx
->Stencil
.ActiveFace
];
717 v
->value_int
= _mesa_get_stencil_ref(ctx
, ctx
->Stencil
.ActiveFace
);
719 case GL_STENCIL_BACK_REF
:
720 v
->value_int
= _mesa_get_stencil_ref(ctx
, 1);
722 case GL_STENCIL_VALUE_MASK
:
723 v
->value_int
= ctx
->Stencil
.ValueMask
[ctx
->Stencil
.ActiveFace
];
725 case GL_STENCIL_WRITEMASK
:
726 v
->value_int
= ctx
->Stencil
.WriteMask
[ctx
->Stencil
.ActiveFace
];
729 case GL_NUM_EXTENSIONS
:
730 v
->value_int
= _mesa_get_extension_count(ctx
);
733 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES
:
734 v
->value_int
= _mesa_get_color_read_type(ctx
);
736 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES
:
737 v
->value_int
= _mesa_get_color_read_format(ctx
);
740 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB
:
741 v
->value_int
= ctx
->CurrentStack
->Depth
+ 1;
743 case GL_CURRENT_MATRIX_ARB
:
744 case GL_TRANSPOSE_CURRENT_MATRIX_ARB
:
745 v
->value_matrix
= ctx
->CurrentStack
->Top
;
748 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB
:
749 v
->value_int
= _mesa_get_compressed_formats(ctx
, NULL
);
751 case GL_COMPRESSED_TEXTURE_FORMATS_ARB
:
753 _mesa_get_compressed_formats(ctx
, v
->value_int_n
.ints
);
754 ASSERT(v
->value_int_n
.n
<= (int) ARRAY_SIZE(v
->value_int_n
.ints
));
757 case GL_MAX_VARYING_FLOATS_ARB
:
758 v
->value_int
= ctx
->Const
.MaxVarying
* 4;
761 /* Various object names */
763 case GL_TEXTURE_BINDING_1D
:
764 case GL_TEXTURE_BINDING_2D
:
765 case GL_TEXTURE_BINDING_3D
:
766 case GL_TEXTURE_BINDING_1D_ARRAY_EXT
:
767 case GL_TEXTURE_BINDING_2D_ARRAY_EXT
:
768 case GL_TEXTURE_BINDING_CUBE_MAP_ARB
:
769 case GL_TEXTURE_BINDING_RECTANGLE_NV
:
770 case GL_TEXTURE_BINDING_EXTERNAL_OES
:
771 case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY
:
772 case GL_TEXTURE_BINDING_2D_MULTISAMPLE
:
773 case GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY
:
774 unit
= ctx
->Texture
.CurrentUnit
;
776 ctx
->Texture
.Unit
[unit
].CurrentTex
[d
->offset
]->Name
;
779 /* GL_EXT_packed_float */
780 case GL_RGBA_SIGNED_COMPONENTS_EXT
:
782 /* Note: we only check the 0th color attachment. */
783 const struct gl_renderbuffer
*rb
=
784 ctx
->DrawBuffer
->_ColorDrawBuffers
[0];
785 if (rb
&& _mesa_is_format_signed(rb
->Format
)) {
786 /* Issue 17 of GL_EXT_packed_float: If a component (such as
787 * alpha) has zero bits, the component should not be considered
788 * signed and so the bit for the respective component should be
792 _mesa_get_format_bits(rb
->Format
, GL_RED_BITS
);
794 _mesa_get_format_bits(rb
->Format
, GL_GREEN_BITS
);
796 _mesa_get_format_bits(rb
->Format
, GL_BLUE_BITS
);
798 _mesa_get_format_bits(rb
->Format
, GL_ALPHA_BITS
);
800 _mesa_get_format_bits(rb
->Format
, GL_TEXTURE_LUMINANCE_SIZE
);
802 _mesa_get_format_bits(rb
->Format
, GL_TEXTURE_INTENSITY_SIZE
);
804 v
->value_int_4
[0] = r_bits
+ l_bits
+ i_bits
> 0;
805 v
->value_int_4
[1] = g_bits
+ l_bits
+ i_bits
> 0;
806 v
->value_int_4
[2] = b_bits
+ l_bits
+ i_bits
> 0;
807 v
->value_int_4
[3] = a_bits
+ i_bits
> 0;
813 v
->value_int_4
[3] = 0;
818 /* GL_ARB_vertex_buffer_object */
819 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB
:
820 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB
:
821 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB
:
822 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB
:
823 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB
:
824 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB
:
825 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB
:
826 buffer_obj
= (struct gl_buffer_object
**)
827 ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
828 v
->value_int
= (*buffer_obj
)->Name
;
830 case GL_ARRAY_BUFFER_BINDING_ARB
:
831 v
->value_int
= ctx
->Array
.ArrayBufferObj
->Name
;
833 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB
:
835 ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)].BufferObj
->Name
;
837 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB
:
838 v
->value_int
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Name
;
841 /* ARB_copy_buffer */
842 case GL_COPY_READ_BUFFER
:
843 v
->value_int
= ctx
->CopyReadBuffer
->Name
;
845 case GL_COPY_WRITE_BUFFER
:
846 v
->value_int
= ctx
->CopyWriteBuffer
->Name
;
849 case GL_PIXEL_PACK_BUFFER_BINDING_EXT
:
850 v
->value_int
= ctx
->Pack
.BufferObj
->Name
;
852 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT
:
853 v
->value_int
= ctx
->Unpack
.BufferObj
->Name
;
855 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
856 v
->value_int
= ctx
->TransformFeedback
.CurrentBuffer
->Name
;
858 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED
:
859 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Paused
;
861 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE
:
862 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Active
;
864 case GL_TRANSFORM_FEEDBACK_BINDING
:
865 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Name
;
867 case GL_CURRENT_PROGRAM
:
869 ctx
->Shader
.ActiveProgram
? ctx
->Shader
.ActiveProgram
->Name
: 0;
871 case GL_READ_FRAMEBUFFER_BINDING_EXT
:
872 v
->value_int
= ctx
->ReadBuffer
->Name
;
874 case GL_RENDERBUFFER_BINDING_EXT
:
876 ctx
->CurrentRenderbuffer
? ctx
->CurrentRenderbuffer
->Name
: 0;
878 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES
:
879 v
->value_int
= ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_POINT_SIZE
].BufferObj
->Name
;
883 if (_mesa_get_clamp_fragment_color(ctx
))
884 COPY_4FV(v
->value_float_4
, ctx
->Fog
.Color
);
886 COPY_4FV(v
->value_float_4
, ctx
->Fog
.ColorUnclamped
);
888 case GL_COLOR_CLEAR_VALUE
:
889 if (_mesa_get_clamp_fragment_color(ctx
)) {
890 v
->value_float_4
[0] = CLAMP(ctx
->Color
.ClearColor
.f
[0], 0.0F
, 1.0F
);
891 v
->value_float_4
[1] = CLAMP(ctx
->Color
.ClearColor
.f
[1], 0.0F
, 1.0F
);
892 v
->value_float_4
[2] = CLAMP(ctx
->Color
.ClearColor
.f
[2], 0.0F
, 1.0F
);
893 v
->value_float_4
[3] = CLAMP(ctx
->Color
.ClearColor
.f
[3], 0.0F
, 1.0F
);
895 COPY_4FV(v
->value_float_4
, ctx
->Color
.ClearColor
.f
);
897 case GL_BLEND_COLOR_EXT
:
898 if (_mesa_get_clamp_fragment_color(ctx
))
899 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColor
);
901 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColorUnclamped
);
903 case GL_ALPHA_TEST_REF
:
904 if (_mesa_get_clamp_fragment_color(ctx
))
905 v
->value_float
= ctx
->Color
.AlphaRef
;
907 v
->value_float
= ctx
->Color
.AlphaRefUnclamped
;
909 case GL_MAX_VERTEX_UNIFORM_VECTORS
:
910 v
->value_int
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxUniformComponents
/ 4;
913 case GL_MAX_FRAGMENT_UNIFORM_VECTORS
:
914 v
->value_int
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxUniformComponents
/ 4;
917 /* GL_ARB_texture_buffer_object */
918 case GL_TEXTURE_BUFFER_ARB
:
919 v
->value_int
= ctx
->Texture
.BufferObject
->Name
;
921 case GL_TEXTURE_BINDING_BUFFER_ARB
:
922 unit
= ctx
->Texture
.CurrentUnit
;
924 ctx
->Texture
.Unit
[unit
].CurrentTex
[TEXTURE_BUFFER_INDEX
]->Name
;
926 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB
:
928 struct gl_buffer_object
*buf
=
929 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
930 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObject
;
931 v
->value_int
= buf
? buf
->Name
: 0;
934 case GL_TEXTURE_BUFFER_FORMAT_ARB
:
935 v
->value_int
= ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
936 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObjectFormat
;
939 /* GL_ARB_sampler_objects */
940 case GL_SAMPLER_BINDING
:
942 struct gl_sampler_object
*samp
=
943 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
].Sampler
;
946 * The sampler object may have been deleted on another context,
947 * so we try to lookup the sampler object before returning its Name.
949 if (samp
&& _mesa_lookup_samplerobj(ctx
, samp
->Name
)) {
950 v
->value_int
= samp
->Name
;
956 /* GL_ARB_uniform_buffer_object */
957 case GL_UNIFORM_BUFFER_BINDING
:
958 v
->value_int
= ctx
->UniformBuffer
->Name
;
960 /* GL_ARB_timer_query */
962 if (ctx
->Driver
.GetTimestamp
) {
963 v
->value_int64
= ctx
->Driver
.GetTimestamp(ctx
);
966 _mesa_problem(ctx
, "driver doesn't implement GetTimestamp");
969 /* GL_ARB_shader_atomic_counters */
970 case GL_ATOMIC_COUNTER_BUFFER_BINDING
:
971 v
->value_int
= ctx
->AtomicBuffer
->Name
;
973 /* GL_ARB_draw_indirect */
974 case GL_DRAW_INDIRECT_BUFFER_BINDING
:
975 v
->value_int
= ctx
->DrawIndirectBuffer
->Name
;
981 * Check extra constraints on a struct value_desc descriptor
983 * If a struct value_desc has a non-NULL extra pointer, it means that
984 * there are a number of extra constraints to check or actions to
985 * perform. The extras is just an integer array where each integer
986 * encode different constraints or actions.
988 * \param ctx current context
989 * \param func name of calling glGet*v() function for error reporting
990 * \param d the struct value_desc that has the extra constraints
992 * \return GL_FALSE if all of the constraints were not satisfied,
996 check_extra(struct gl_context
*ctx
, const char *func
, const struct value_desc
*d
)
998 const GLuint version
= ctx
->Version
;
999 GLboolean api_check
= GL_FALSE
;
1000 GLboolean api_found
= GL_FALSE
;
1003 for (e
= d
->extra
; *e
!= EXTRA_END
; e
++) {
1005 case EXTRA_VERSION_30
:
1006 api_check
= GL_TRUE
;
1008 api_found
= GL_TRUE
;
1010 case EXTRA_VERSION_31
:
1011 api_check
= GL_TRUE
;
1013 api_found
= GL_TRUE
;
1015 case EXTRA_VERSION_32
:
1016 api_check
= GL_TRUE
;
1018 api_found
= GL_TRUE
;
1020 case EXTRA_NEW_FRAG_CLAMP
:
1021 if (ctx
->NewState
& (_NEW_BUFFERS
| _NEW_FRAG_CLAMP
))
1022 _mesa_update_state(ctx
);
1025 api_check
= GL_TRUE
;
1026 if (ctx
->API
== API_OPENGLES2
)
1027 api_found
= GL_TRUE
;
1030 api_check
= GL_TRUE
;
1031 if (_mesa_is_gles3(ctx
))
1032 api_found
= GL_TRUE
;
1035 api_check
= GL_TRUE
;
1036 if (_mesa_is_desktop_gl(ctx
))
1037 api_found
= GL_TRUE
;
1039 case EXTRA_API_GL_CORE
:
1040 api_check
= GL_TRUE
;
1041 if (ctx
->API
== API_OPENGL_CORE
)
1042 api_found
= GL_TRUE
;
1044 case EXTRA_NEW_BUFFERS
:
1045 if (ctx
->NewState
& _NEW_BUFFERS
)
1046 _mesa_update_state(ctx
);
1048 case EXTRA_FLUSH_CURRENT
:
1049 FLUSH_CURRENT(ctx
, 0);
1051 case EXTRA_VALID_DRAW_BUFFER
:
1052 if (d
->pname
- GL_DRAW_BUFFER0_ARB
>= ctx
->Const
.MaxDrawBuffers
) {
1053 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(draw buffer %u)",
1054 func
, d
->pname
- GL_DRAW_BUFFER0_ARB
);
1058 case EXTRA_VALID_TEXTURE_UNIT
:
1059 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
1060 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(texture %u)",
1061 func
, ctx
->Texture
.CurrentUnit
);
1065 case EXTRA_VALID_CLIP_DISTANCE
:
1066 if (d
->pname
- GL_CLIP_DISTANCE0
>= ctx
->Const
.MaxClipPlanes
) {
1067 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(clip distance %u)",
1068 func
, d
->pname
- GL_CLIP_DISTANCE0
);
1072 case EXTRA_GLSL_130
:
1073 api_check
= GL_TRUE
;
1074 if (ctx
->Const
.GLSLVersion
>= 130)
1075 api_found
= GL_TRUE
;
1077 case EXTRA_EXT_UBO_GS4
:
1078 api_check
= GL_TRUE
;
1079 api_found
= (ctx
->Extensions
.ARB_uniform_buffer_object
&&
1080 _mesa_has_geometry_shaders(ctx
));
1082 case EXTRA_EXT_ATOMICS_GS4
:
1083 api_check
= GL_TRUE
;
1084 api_found
= (ctx
->Extensions
.ARB_shader_atomic_counters
&&
1085 _mesa_has_geometry_shaders(ctx
));
1087 case EXTRA_EXT_SHADER_IMAGE_GS4
:
1088 api_check
= GL_TRUE
;
1089 api_found
= (ctx
->Extensions
.ARB_shader_image_load_store
&&
1090 _mesa_has_geometry_shaders(ctx
));
1094 default: /* *e is a offset into the extension struct */
1095 api_check
= GL_TRUE
;
1096 if (*(GLboolean
*) ((char *) &ctx
->Extensions
+ *e
))
1097 api_found
= GL_TRUE
;
1102 if (api_check
&& !api_found
) {
1103 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1104 _mesa_lookup_enum_by_nr(d
->pname
));
1111 static const struct value_desc error_value
=
1112 { 0, 0, TYPE_INVALID
, NO_OFFSET
, NO_EXTRA
};
1115 * Find the struct value_desc corresponding to the enum 'pname'.
1117 * We hash the enum value to get an index into the 'table' array,
1118 * which holds the index in the 'values' array of struct value_desc.
1119 * Once we've found the entry, we do the extra checks, if any, then
1120 * look up the value and return a pointer to it.
1122 * If the value has to be computed (for example, it's the result of a
1123 * function call or we need to add 1 to it), we use the tmp 'v' to
1126 * \param func name of glGet*v() func for error reporting
1127 * \param pname the enum value we're looking up
1128 * \param p is were we return the pointer to the value
1129 * \param v a tmp union value variable in the calling glGet*v() function
1131 * \return the struct value_desc corresponding to the enum or a struct
1132 * value_desc of TYPE_INVALID if not found. This lets the calling
1133 * glGet*v() function jump right into a switch statement and
1134 * handle errors there instead of having to check for NULL.
1136 static const struct value_desc
*
1137 find_value(const char *func
, GLenum pname
, void **p
, union value
*v
)
1139 GET_CURRENT_CONTEXT(ctx
);
1140 struct gl_texture_unit
*unit
;
1142 const struct value_desc
*d
;
1146 /* We index into the table_set[] list of per-API hash tables using the API's
1147 * value in the gl_api enum. Since GLES 3 doesn't have an API_OPENGL* enum
1148 * value since it's compatible with GLES2 its entry in table_set[] is at the
1151 STATIC_ASSERT(Elements(table_set
) == API_OPENGL_LAST
+ 2);
1152 if (_mesa_is_gles3(ctx
)) {
1153 api
= API_OPENGL_LAST
+ 1;
1155 mask
= Elements(table(api
)) - 1;
1156 hash
= (pname
* prime_factor
);
1158 int idx
= table(api
)[hash
& mask
];
1160 /* If the enum isn't valid, the hash walk ends with index 0,
1161 * pointing to the first entry of values[] which doesn't hold
1162 * any valid enum. */
1163 if (unlikely(idx
== 0)) {
1164 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1165 _mesa_lookup_enum_by_nr(pname
));
1166 return &error_value
;
1170 if (likely(d
->pname
== pname
))
1176 if (unlikely(d
->extra
&& !check_extra(ctx
, func
, d
)))
1177 return &error_value
;
1179 switch (d
->location
) {
1181 *p
= ((char *) ctx
->DrawBuffer
+ d
->offset
);
1184 *p
= ((char *) ctx
+ d
->offset
);
1187 *p
= ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
1190 unit
= &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
1191 *p
= ((char *) unit
+ d
->offset
);
1194 find_custom_value(ctx
, d
, v
);
1202 /* silence warning */
1203 return &error_value
;
1206 static const int transpose
[] = {
1214 _mesa_GetBooleanv(GLenum pname
, GLboolean
*params
)
1216 const struct value_desc
*d
;
1222 d
= find_value("glGetBooleanv", pname
, &p
, &v
);
1227 params
[0] = INT_TO_BOOLEAN(d
->offset
);
1232 params
[3] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[3]);
1235 params
[2] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[2]);
1238 params
[1] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[1]);
1241 params
[0] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[0]);
1245 params
[0] = FLOAT_TO_BOOLEAN(((GLdouble
*) p
)[0]);
1249 params
[3] = INT_TO_BOOLEAN(((GLint
*) p
)[3]);
1251 params
[2] = INT_TO_BOOLEAN(((GLint
*) p
)[2]);
1254 params
[1] = INT_TO_BOOLEAN(((GLint
*) p
)[1]);
1257 params
[0] = INT_TO_BOOLEAN(((GLint
*) p
)[0]);
1261 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1262 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1266 params
[0] = INT64_TO_BOOLEAN(((GLint64
*) p
)[0]);
1270 params
[0] = ((GLboolean
*) p
)[0];
1274 m
= *(GLmatrix
**) p
;
1275 for (i
= 0; i
< 16; i
++)
1276 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[i
]);
1280 m
= *(GLmatrix
**) p
;
1281 for (i
= 0; i
< 16; i
++)
1282 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[transpose
[i
]]);
1293 shift
= d
->type
- TYPE_BIT_0
;
1294 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1300 _mesa_GetFloatv(GLenum pname
, GLfloat
*params
)
1302 const struct value_desc
*d
;
1308 d
= find_value("glGetFloatv", pname
, &p
, &v
);
1313 params
[0] = (GLfloat
) d
->offset
;
1318 params
[3] = ((GLfloat
*) p
)[3];
1321 params
[2] = ((GLfloat
*) p
)[2];
1324 params
[1] = ((GLfloat
*) p
)[1];
1327 params
[0] = ((GLfloat
*) p
)[0];
1331 params
[0] = (GLfloat
) (((GLdouble
*) p
)[0]);
1335 params
[3] = (GLfloat
) (((GLint
*) p
)[3]);
1337 params
[2] = (GLfloat
) (((GLint
*) p
)[2]);
1340 params
[1] = (GLfloat
) (((GLint
*) p
)[1]);
1343 params
[0] = (GLfloat
) (((GLint
*) p
)[0]);
1347 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1348 params
[i
] = INT_TO_FLOAT(v
.value_int_n
.ints
[i
]);
1352 params
[0] = (GLfloat
) (((GLint64
*) p
)[0]);
1356 params
[0] = BOOLEAN_TO_FLOAT(*(GLboolean
*) p
);
1360 m
= *(GLmatrix
**) p
;
1361 for (i
= 0; i
< 16; i
++)
1362 params
[i
] = m
->m
[i
];
1366 m
= *(GLmatrix
**) p
;
1367 for (i
= 0; i
< 16; i
++)
1368 params
[i
] = m
->m
[transpose
[i
]];
1379 shift
= d
->type
- TYPE_BIT_0
;
1380 params
[0] = BOOLEAN_TO_FLOAT((*(GLbitfield
*) p
>> shift
) & 1);
1386 _mesa_GetIntegerv(GLenum pname
, GLint
*params
)
1388 const struct value_desc
*d
;
1394 d
= find_value("glGetIntegerv", pname
, &p
, &v
);
1399 params
[0] = d
->offset
;
1403 params
[3] = IROUND(((GLfloat
*) p
)[3]);
1405 params
[2] = IROUND(((GLfloat
*) p
)[2]);
1407 params
[1] = IROUND(((GLfloat
*) p
)[1]);
1409 params
[0] = IROUND(((GLfloat
*) p
)[0]);
1413 params
[3] = FLOAT_TO_INT(((GLfloat
*) p
)[3]);
1415 params
[2] = FLOAT_TO_INT(((GLfloat
*) p
)[2]);
1417 params
[1] = FLOAT_TO_INT(((GLfloat
*) p
)[1]);
1419 params
[0] = FLOAT_TO_INT(((GLfloat
*) p
)[0]);
1423 params
[0] = FLOAT_TO_INT(((GLdouble
*) p
)[0]);
1427 params
[3] = ((GLint
*) p
)[3];
1429 params
[2] = ((GLint
*) p
)[2];
1432 params
[1] = ((GLint
*) p
)[1];
1435 params
[0] = ((GLint
*) p
)[0];
1439 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1440 params
[i
] = v
.value_int_n
.ints
[i
];
1444 params
[0] = INT64_TO_INT(((GLint64
*) p
)[0]);
1448 params
[0] = BOOLEAN_TO_INT(*(GLboolean
*) p
);
1452 m
= *(GLmatrix
**) p
;
1453 for (i
= 0; i
< 16; i
++)
1454 params
[i
] = FLOAT_TO_INT(m
->m
[i
]);
1458 m
= *(GLmatrix
**) p
;
1459 for (i
= 0; i
< 16; i
++)
1460 params
[i
] = FLOAT_TO_INT(m
->m
[transpose
[i
]]);
1471 shift
= d
->type
- TYPE_BIT_0
;
1472 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1478 _mesa_GetInteger64v(GLenum pname
, GLint64
*params
)
1480 const struct value_desc
*d
;
1486 d
= find_value("glGetInteger64v", pname
, &p
, &v
);
1491 params
[0] = d
->offset
;
1495 params
[3] = IROUND64(((GLfloat
*) p
)[3]);
1497 params
[2] = IROUND64(((GLfloat
*) p
)[2]);
1499 params
[1] = IROUND64(((GLfloat
*) p
)[1]);
1501 params
[0] = IROUND64(((GLfloat
*) p
)[0]);
1505 params
[3] = FLOAT_TO_INT64(((GLfloat
*) p
)[3]);
1507 params
[2] = FLOAT_TO_INT64(((GLfloat
*) p
)[2]);
1509 params
[1] = FLOAT_TO_INT64(((GLfloat
*) p
)[1]);
1511 params
[0] = FLOAT_TO_INT64(((GLfloat
*) p
)[0]);
1515 params
[0] = FLOAT_TO_INT64(((GLdouble
*) p
)[0]);
1519 params
[3] = ((GLint
*) p
)[3];
1521 params
[2] = ((GLint
*) p
)[2];
1524 params
[1] = ((GLint
*) p
)[1];
1527 params
[0] = ((GLint
*) p
)[0];
1531 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1532 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1536 params
[0] = ((GLint64
*) p
)[0];
1540 params
[0] = ((GLboolean
*) p
)[0];
1544 m
= *(GLmatrix
**) p
;
1545 for (i
= 0; i
< 16; i
++)
1546 params
[i
] = FLOAT_TO_INT64(m
->m
[i
]);
1550 m
= *(GLmatrix
**) p
;
1551 for (i
= 0; i
< 16; i
++)
1552 params
[i
] = FLOAT_TO_INT64(m
->m
[transpose
[i
]]);
1563 shift
= d
->type
- TYPE_BIT_0
;
1564 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1570 _mesa_GetDoublev(GLenum pname
, GLdouble
*params
)
1572 const struct value_desc
*d
;
1578 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1583 params
[0] = d
->offset
;
1588 params
[3] = ((GLfloat
*) p
)[3];
1591 params
[2] = ((GLfloat
*) p
)[2];
1594 params
[1] = ((GLfloat
*) p
)[1];
1597 params
[0] = ((GLfloat
*) p
)[0];
1601 params
[0] = ((GLdouble
*) p
)[0];
1605 params
[3] = ((GLint
*) p
)[3];
1607 params
[2] = ((GLint
*) p
)[2];
1610 params
[1] = ((GLint
*) p
)[1];
1613 params
[0] = ((GLint
*) p
)[0];
1617 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1618 params
[i
] = v
.value_int_n
.ints
[i
];
1622 params
[0] = (GLdouble
) (((GLint64
*) p
)[0]);
1626 params
[0] = *(GLboolean
*) p
;
1630 m
= *(GLmatrix
**) p
;
1631 for (i
= 0; i
< 16; i
++)
1632 params
[i
] = m
->m
[i
];
1636 m
= *(GLmatrix
**) p
;
1637 for (i
= 0; i
< 16; i
++)
1638 params
[i
] = m
->m
[transpose
[i
]];
1649 shift
= d
->type
- TYPE_BIT_0
;
1650 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1655 static enum value_type
1656 find_value_indexed(const char *func
, GLenum pname
, GLuint index
, union value
*v
)
1658 GET_CURRENT_CONTEXT(ctx
);
1663 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1665 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1667 v
->value_int
= (ctx
->Color
.BlendEnabled
>> index
) & 1;
1672 case GL_BLEND_SRC_RGB
:
1673 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1675 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1677 v
->value_int
= ctx
->Color
.Blend
[index
].SrcRGB
;
1679 case GL_BLEND_SRC_ALPHA
:
1680 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1682 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1684 v
->value_int
= ctx
->Color
.Blend
[index
].SrcA
;
1688 case GL_BLEND_DST_RGB
:
1689 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1691 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1693 v
->value_int
= ctx
->Color
.Blend
[index
].DstRGB
;
1695 case GL_BLEND_DST_ALPHA
:
1696 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1698 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1700 v
->value_int
= ctx
->Color
.Blend
[index
].DstA
;
1702 case GL_BLEND_EQUATION_RGB
:
1703 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1705 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1707 v
->value_int
= ctx
->Color
.Blend
[index
].EquationRGB
;
1709 case GL_BLEND_EQUATION_ALPHA
:
1710 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1712 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1714 v
->value_int
= ctx
->Color
.Blend
[index
].EquationA
;
1717 case GL_COLOR_WRITEMASK
:
1718 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1720 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1722 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[index
][RCOMP
] ? 1 : 0;
1723 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[index
][GCOMP
] ? 1 : 0;
1724 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[index
][BCOMP
] ? 1 : 0;
1725 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[index
][ACOMP
] ? 1 : 0;
1728 case GL_TRANSFORM_FEEDBACK_BUFFER_START
:
1729 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1731 if (!ctx
->Extensions
.EXT_transform_feedback
)
1733 v
->value_int64
= ctx
->TransformFeedback
.CurrentObject
->Offset
[index
];
1736 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE
:
1737 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1739 if (!ctx
->Extensions
.EXT_transform_feedback
)
1742 = ctx
->TransformFeedback
.CurrentObject
->RequestedSize
[index
];
1745 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
1746 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1748 if (!ctx
->Extensions
.EXT_transform_feedback
)
1750 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->BufferNames
[index
];
1753 case GL_UNIFORM_BUFFER_BINDING
:
1754 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1756 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1758 v
->value_int
= ctx
->UniformBufferBindings
[index
].BufferObject
->Name
;
1761 case GL_UNIFORM_BUFFER_START
:
1762 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1764 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1766 v
->value_int
= ctx
->UniformBufferBindings
[index
].Offset
;
1769 case GL_UNIFORM_BUFFER_SIZE
:
1770 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1772 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1774 v
->value_int
= ctx
->UniformBufferBindings
[index
].Size
;
1777 /* ARB_texture_multisample / GL3.2 */
1778 case GL_SAMPLE_MASK_VALUE
:
1781 if (!ctx
->Extensions
.ARB_texture_multisample
)
1783 v
->value_int
= ctx
->Multisample
.SampleMaskValue
;
1786 case GL_ATOMIC_COUNTER_BUFFER_BINDING
:
1787 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
1789 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
)
1791 v
->value_int
= ctx
->AtomicBufferBindings
[index
].BufferObject
->Name
;
1794 case GL_ATOMIC_COUNTER_BUFFER_START
:
1795 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
1797 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
)
1799 v
->value_int64
= ctx
->AtomicBufferBindings
[index
].Offset
;
1802 case GL_ATOMIC_COUNTER_BUFFER_SIZE
:
1803 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
1805 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
)
1807 v
->value_int64
= ctx
->AtomicBufferBindings
[index
].Size
;
1810 case GL_VERTEX_BINDING_DIVISOR
:
1811 if (!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_instanced_arrays
)
1813 if (index
>= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
)
1815 v
->value_int
= ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_GENERIC(index
)].InstanceDivisor
;
1818 case GL_VERTEX_BINDING_OFFSET
:
1819 if (!_mesa_is_desktop_gl(ctx
))
1821 if (index
>= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
)
1823 v
->value_int
= ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_GENERIC(index
)].Offset
;
1826 case GL_VERTEX_BINDING_STRIDE
:
1827 if (!_mesa_is_desktop_gl(ctx
))
1829 if (index
>= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
)
1831 v
->value_int
= ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_GENERIC(index
)].Stride
;
1833 /* ARB_shader_image_load_store */
1834 case GL_IMAGE_BINDING_NAME
: {
1835 struct gl_texture_object
*t
;
1837 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1839 if (index
>= ctx
->Const
.MaxImageUnits
)
1842 t
= ctx
->ImageUnits
[index
].TexObj
;
1843 v
->value_int
= (t
? t
->Name
: 0);
1847 case GL_IMAGE_BINDING_LEVEL
:
1848 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1850 if (index
>= ctx
->Const
.MaxImageUnits
)
1853 v
->value_int
= ctx
->ImageUnits
[index
].Level
;
1856 case GL_IMAGE_BINDING_LAYERED
:
1857 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1859 if (index
>= ctx
->Const
.MaxImageUnits
)
1862 v
->value_int
= ctx
->ImageUnits
[index
].Layered
;
1865 case GL_IMAGE_BINDING_LAYER
:
1866 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1868 if (index
>= ctx
->Const
.MaxImageUnits
)
1871 v
->value_int
= ctx
->ImageUnits
[index
].Layer
;
1874 case GL_IMAGE_BINDING_ACCESS
:
1875 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1877 if (index
>= ctx
->Const
.MaxImageUnits
)
1880 v
->value_int
= ctx
->ImageUnits
[index
].Access
;
1883 case GL_IMAGE_BINDING_FORMAT
:
1884 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1886 if (index
>= ctx
->Const
.MaxImageUnits
)
1889 v
->value_int
= ctx
->ImageUnits
[index
].Format
;
1894 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1895 _mesa_lookup_enum_by_nr(pname
));
1896 return TYPE_INVALID
;
1898 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(pname=%s)", func
,
1899 _mesa_lookup_enum_by_nr(pname
));
1900 return TYPE_INVALID
;
1904 _mesa_GetBooleani_v( GLenum pname
, GLuint index
, GLboolean
*params
)
1907 enum value_type type
=
1908 find_value_indexed("glGetBooleani_v", pname
, index
, &v
);
1912 params
[0] = INT_TO_BOOLEAN(v
.value_int
);
1915 params
[0] = INT_TO_BOOLEAN(v
.value_int_4
[0]);
1916 params
[1] = INT_TO_BOOLEAN(v
.value_int_4
[1]);
1917 params
[2] = INT_TO_BOOLEAN(v
.value_int_4
[2]);
1918 params
[3] = INT_TO_BOOLEAN(v
.value_int_4
[3]);
1921 params
[0] = INT64_TO_BOOLEAN(v
.value_int
);
1924 ; /* nothing - GL error was recorded */
1929 _mesa_GetIntegeri_v( GLenum pname
, GLuint index
, GLint
*params
)
1932 enum value_type type
=
1933 find_value_indexed("glGetIntegeri_v", pname
, index
, &v
);
1937 params
[0] = v
.value_int
;
1940 params
[0] = v
.value_int_4
[0];
1941 params
[1] = v
.value_int_4
[1];
1942 params
[2] = v
.value_int_4
[2];
1943 params
[3] = v
.value_int_4
[3];
1946 params
[0] = INT64_TO_INT(v
.value_int
);
1949 ; /* nothing - GL error was recorded */
1954 _mesa_GetInteger64i_v( GLenum pname
, GLuint index
, GLint64
*params
)
1957 enum value_type type
=
1958 find_value_indexed("glGetInteger64i_v", pname
, index
, &v
);
1962 params
[0] = v
.value_int
;
1965 params
[0] = v
.value_int_4
[0];
1966 params
[1] = v
.value_int_4
[1];
1967 params
[2] = v
.value_int_4
[2];
1968 params
[3] = v
.value_int_4
[3];
1971 params
[0] = v
.value_int
;
1974 ; /* nothing - GL error was recorded */
1979 _mesa_GetFixedv(GLenum pname
, GLfixed
*params
)
1981 const struct value_desc
*d
;
1987 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1992 params
[0] = INT_TO_FIXED(d
->offset
);
1997 params
[3] = FLOAT_TO_FIXED(((GLfloat
*) p
)[3]);
2000 params
[2] = FLOAT_TO_FIXED(((GLfloat
*) p
)[2]);
2003 params
[1] = FLOAT_TO_FIXED(((GLfloat
*) p
)[1]);
2006 params
[0] = FLOAT_TO_FIXED(((GLfloat
*) p
)[0]);
2010 params
[0] = FLOAT_TO_FIXED(((GLdouble
*) p
)[0]);
2014 params
[3] = INT_TO_FIXED(((GLint
*) p
)[3]);
2016 params
[2] = INT_TO_FIXED(((GLint
*) p
)[2]);
2019 params
[1] = INT_TO_FIXED(((GLint
*) p
)[1]);
2022 params
[0] = INT_TO_FIXED(((GLint
*) p
)[0]);
2026 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
2027 params
[i
] = INT_TO_FIXED(v
.value_int_n
.ints
[i
]);
2031 params
[0] = ((GLint64
*) p
)[0];
2035 params
[0] = BOOLEAN_TO_FIXED(((GLboolean
*) p
)[0]);
2039 m
= *(GLmatrix
**) p
;
2040 for (i
= 0; i
< 16; i
++)
2041 params
[i
] = FLOAT_TO_FIXED(m
->m
[i
]);
2045 m
= *(GLmatrix
**) p
;
2046 for (i
= 0; i
< 16; i
++)
2047 params
[i
] = FLOAT_TO_FIXED(m
->m
[transpose
[i
]]);
2058 shift
= d
->type
- TYPE_BIT_0
;
2059 params
[0] = BOOLEAN_TO_FIXED((*(GLbitfield
*) p
>> shift
) & 1);