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)
121 enum value_location
{
140 EXTRA_NEW_FRAG_CLAMP
,
141 EXTRA_VALID_DRAW_BUFFER
,
142 EXTRA_VALID_TEXTURE_UNIT
,
143 EXTRA_VALID_CLIP_DISTANCE
,
147 EXTRA_EXT_ATOMICS_GS4
,
148 EXTRA_EXT_SHADER_IMAGE_GS4
,
151 #define NO_EXTRA NULL
156 GLubyte location
; /**< enum value_location */
157 GLubyte type
; /**< enum value_type */
164 GLfloat value_float_4
[4];
165 GLmatrix
*value_matrix
;
167 GLint value_int_4
[4];
171 /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
175 GLboolean value_bool
;
178 #define BUFFER_FIELD(field, type) \
179 LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
180 #define CONTEXT_FIELD(field, type) \
181 LOC_CONTEXT, type, offsetof(struct gl_context, field)
182 #define ARRAY_FIELD(field, type) \
183 LOC_ARRAY, type, offsetof(struct gl_array_object, field)
184 #undef CONST /* already defined through windows.h */
185 #define CONST(value) \
186 LOC_CONTEXT, TYPE_CONST, value
188 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
189 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
190 #define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
192 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
193 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
194 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
195 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
196 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
197 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
198 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
199 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
200 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
201 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
202 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
203 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
204 #define CONTEXT_BIT6(field) CONTEXT_FIELD(field, TYPE_BIT_6)
205 #define CONTEXT_BIT7(field) CONTEXT_FIELD(field, TYPE_BIT_7)
206 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
207 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
208 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
209 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
210 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
211 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
213 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
214 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
215 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
218 offsetof(struct gl_extensions, f)
220 #define EXTRA_EXT(e) \
221 static const int extra_##e[] = { \
225 #define EXTRA_EXT2(e1, e2) \
226 static const int extra_##e1##_##e2[] = { \
227 EXT(e1), EXT(e2), EXTRA_END \
230 /* The 'extra' mechanism is a way to specify extra checks (such as
231 * extensions or specific gl versions) or actions (flush current, new
232 * buffers) that we need to do before looking up an enum. We need to
233 * declare them all up front so we can refer to them in the value_desc
236 * Each EXTRA_ will be executed. For EXTRA_* enums of extensions and API
237 * versions, listing multiple ones in an array means an error will be thrown
238 * only if none of them are available. If you need to check for "AND"
239 * behavior, you would need to make a custom EXTRA_ enum.
242 static const int extra_new_buffers
[] = {
247 static const int extra_new_frag_clamp
[] = {
248 EXTRA_NEW_FRAG_CLAMP
,
252 static const int extra_valid_draw_buffer
[] = {
253 EXTRA_VALID_DRAW_BUFFER
,
257 static const int extra_valid_texture_unit
[] = {
258 EXTRA_VALID_TEXTURE_UNIT
,
262 static const int extra_valid_clip_distance
[] = {
263 EXTRA_VALID_CLIP_DISTANCE
,
267 static const int extra_flush_current_valid_texture_unit
[] = {
269 EXTRA_VALID_TEXTURE_UNIT
,
273 static const int extra_flush_current
[] = {
278 static const int extra_EXT_texture_integer
[] = {
279 EXT(EXT_texture_integer
),
283 static const int extra_EXT_texture_integer_and_new_buffers
[] = {
284 EXT(EXT_texture_integer
),
289 static const int extra_GLSL_130_es3
[] = {
295 static const int extra_texture_buffer_object
[] = {
298 EXT(ARB_texture_buffer_object
),
302 static const int extra_ARB_transform_feedback2_api_es3
[] = {
303 EXT(ARB_transform_feedback2
),
308 static const int extra_ARB_uniform_buffer_object_and_geometry_shader
[] = {
313 static const int extra_ARB_ES2_compatibility_api_es2
[] = {
314 EXT(ARB_ES2_compatibility
),
319 static const int extra_ARB_ES3_compatibility_api_es3
[] = {
320 EXT(ARB_ES3_compatibility
),
325 static const int extra_EXT_framebuffer_sRGB_and_new_buffers
[] = {
326 EXT(EXT_framebuffer_sRGB
),
331 static const int extra_EXT_packed_float
[] = {
332 EXT(EXT_packed_float
),
337 static const int extra_EXT_texture_array_es3
[] = {
338 EXT(EXT_texture_array
),
343 static const int extra_ARB_shader_atomic_counters_and_geometry_shader
[] = {
344 EXTRA_EXT_ATOMICS_GS4
,
348 static const int extra_ARB_shader_image_load_store_and_geometry_shader
[] = {
349 EXTRA_EXT_SHADER_IMAGE_GS4
,
353 EXTRA_EXT(ARB_texture_cube_map
);
354 EXTRA_EXT(EXT_texture_array
);
355 EXTRA_EXT(NV_fog_distance
);
356 EXTRA_EXT(EXT_texture_filter_anisotropic
);
357 EXTRA_EXT(NV_point_sprite
);
358 EXTRA_EXT(NV_texture_rectangle
);
359 EXTRA_EXT(EXT_stencil_two_side
);
360 EXTRA_EXT(EXT_depth_bounds_test
);
361 EXTRA_EXT(ARB_depth_clamp
);
362 EXTRA_EXT(ATI_fragment_shader
);
363 EXTRA_EXT(EXT_framebuffer_blit
);
364 EXTRA_EXT(EXT_provoking_vertex
);
365 EXTRA_EXT(ARB_fragment_shader
);
366 EXTRA_EXT(ARB_fragment_program
);
367 EXTRA_EXT2(ARB_framebuffer_object
, EXT_framebuffer_multisample
);
368 EXTRA_EXT(ARB_seamless_cube_map
);
370 EXTRA_EXT(ARB_vertex_shader
);
371 EXTRA_EXT(EXT_transform_feedback
);
372 EXTRA_EXT(ARB_transform_feedback3
);
373 EXTRA_EXT(EXT_pixel_buffer_object
);
374 EXTRA_EXT(ARB_vertex_program
);
375 EXTRA_EXT2(NV_point_sprite
, ARB_point_sprite
);
376 EXTRA_EXT2(ARB_vertex_program
, ARB_fragment_program
);
377 EXTRA_EXT(ARB_geometry_shader4
);
378 EXTRA_EXT(ARB_color_buffer_float
);
379 EXTRA_EXT(EXT_framebuffer_sRGB
);
380 EXTRA_EXT(OES_EGL_image_external
);
381 EXTRA_EXT(ARB_blend_func_extended
);
382 EXTRA_EXT(ARB_uniform_buffer_object
);
383 EXTRA_EXT(ARB_timer_query
);
384 EXTRA_EXT(ARB_map_buffer_alignment
);
385 EXTRA_EXT(ARB_texture_cube_map_array
);
386 EXTRA_EXT(ARB_texture_buffer_range
);
387 EXTRA_EXT(ARB_texture_multisample
);
388 EXTRA_EXT(ARB_texture_gather
);
389 EXTRA_EXT(ARB_shader_atomic_counters
);
390 EXTRA_EXT(ARB_draw_indirect
);
391 EXTRA_EXT(ARB_shader_image_load_store
);
394 extra_ARB_color_buffer_float_or_glcore
[] = {
395 EXT(ARB_color_buffer_float
),
401 extra_NV_primitive_restart
[] = {
402 EXT(NV_primitive_restart
),
406 static const int extra_version_30
[] = { EXTRA_VERSION_30
, EXTRA_END
};
407 static const int extra_version_31
[] = { EXTRA_VERSION_31
, EXTRA_END
};
408 static const int extra_version_32
[] = { EXTRA_VERSION_32
, EXTRA_END
};
409 static const int extra_version_40
[] = { EXTRA_VERSION_40
, EXTRA_END
};
411 static const int extra_gl30_es3
[] = {
417 static const int extra_gl32_es3
[] = {
423 static const int extra_gl32_ARB_geometry_shader4
[] = {
425 EXT(ARB_geometry_shader4
),
429 static const int extra_gl40_ARB_sample_shading
[] = {
431 EXT(ARB_sample_shading
),
436 extra_ARB_vertex_program_api_es2
[] = {
437 EXT(ARB_vertex_program
),
442 /* The ReadBuffer get token is valid under either full GL or under
443 * GLES2 if the NV_read_buffer extension is available. */
445 extra_NV_read_buffer_api_gl
[] = {
451 static const int extra_core_ARB_color_buffer_float_and_new_buffers
[] = {
453 EXT(ARB_color_buffer_float
),
458 /* This is the big table describing all the enums we accept in
459 * glGet*v(). The table is partitioned into six parts: enums
460 * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
461 * between OpenGL and GLES, enums exclusive to GLES, etc for the
462 * remaining combinations. To look up the enums valid in a given API
463 * we will use a hash table specific to that API. These tables are in
464 * turn generated at build time and included through get_hash.h.
467 #include "get_hash.h"
469 /* All we need now is a way to look up the value struct from the enum.
470 * The code generated by gcc for the old generated big switch
471 * statement is a big, balanced, open coded if/else tree, essentially
472 * an unrolled binary search. It would be natural to sort the new
473 * enum table and use bsearch(), but we will use a read-only hash
474 * table instead. bsearch() has a nice guaranteed worst case
475 * performance, but we're also guaranteed to hit that worst case
476 * (log2(n) iterations) for about half the enums. Instead, using an
477 * open addressing hash table, we can find the enum on the first try
478 * for 80% of the enums, 1 collision for 10% and never more than 5
479 * collisions for any enum (typical numbers). And the code is very
480 * simple, even though it feels a little magic. */
484 print_table_stats(int api
)
486 int i
, j
, collisions
[11], count
, hash
, mask
;
487 const struct value_desc
*d
;
488 const char *api_names
[] = {
489 [API_OPENGL_COMPAT
] = "GL",
490 [API_OPENGL_CORE
] = "GL_CORE",
491 [API_OPENGLES
] = "GLES",
492 [API_OPENGLES2
] = "GLES2",
494 const char *api_name
;
496 api_name
= api
< Elements(api_names
) ? api_names
[api
] : "N/A";
498 mask
= Elements(table(api
)) - 1;
499 memset(collisions
, 0, sizeof collisions
);
501 for (i
= 0; i
< Elements(table(api
)); i
++) {
505 d
= &values
[table(api
)[i
]];
506 hash
= (d
->pname
* prime_factor
);
509 if (values
[table(api
)[hash
& mask
]].pname
== d
->pname
)
521 printf("number of enums for %s: %d (total %ld)\n",
522 api_name
, count
, Elements(values
));
523 for (i
= 0; i
< Elements(collisions
) - 1; i
++)
524 if (collisions
[i
] > 0)
525 printf(" %d enums with %d %scollisions\n",
526 collisions
[i
], i
, i
== 10 ? "or more " : "");
531 * Initialize the enum hash for a given API
533 * This is called from one_time_init() to insert the enum values that
534 * are valid for the API in question into the enum hash table.
536 * \param the current context, for determining the API in question
538 void _mesa_init_get_hash(struct gl_context
*ctx
)
541 print_table_stats(ctx
->API
);
548 * Handle irregular enums
550 * Some values don't conform to the "well-known type at context
551 * pointer + offset" pattern, so we have this function to catch all
552 * the corner cases. Typically, it's a computed value or a one-off
553 * pointer to a custom struct or something.
555 * In this case we can't return a pointer to the value, so we'll have
556 * to use the temporary variable 'v' declared back in the calling
557 * glGet*v() function to store the result.
559 * \param ctx the current context
560 * \param d the struct value_desc that describes the enum
561 * \param v pointer to the tmp declared in the calling glGet*v() function
564 find_custom_value(struct gl_context
*ctx
, const struct value_desc
*d
, union value
*v
)
566 struct gl_buffer_object
**buffer_obj
;
567 struct gl_vertex_attrib_array
*array
;
571 case GL_MAJOR_VERSION
:
572 v
->value_int
= ctx
->Version
/ 10;
574 case GL_MINOR_VERSION
:
575 v
->value_int
= ctx
->Version
% 10;
581 case GL_TEXTURE_CUBE_MAP_ARB
:
582 case GL_TEXTURE_RECTANGLE_NV
:
583 case GL_TEXTURE_EXTERNAL_OES
:
584 v
->value_bool
= _mesa_IsEnabled(d
->pname
);
587 case GL_LINE_STIPPLE_PATTERN
:
588 /* This is the only GLushort, special case it here by promoting
589 * to an int rather than introducing a new type. */
590 v
->value_int
= ctx
->Line
.StipplePattern
;
593 case GL_CURRENT_RASTER_TEXTURE_COORDS
:
594 unit
= ctx
->Texture
.CurrentUnit
;
595 v
->value_float_4
[0] = ctx
->Current
.RasterTexCoords
[unit
][0];
596 v
->value_float_4
[1] = ctx
->Current
.RasterTexCoords
[unit
][1];
597 v
->value_float_4
[2] = ctx
->Current
.RasterTexCoords
[unit
][2];
598 v
->value_float_4
[3] = ctx
->Current
.RasterTexCoords
[unit
][3];
601 case GL_CURRENT_TEXTURE_COORDS
:
602 unit
= ctx
->Texture
.CurrentUnit
;
603 v
->value_float_4
[0] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][0];
604 v
->value_float_4
[1] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][1];
605 v
->value_float_4
[2] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][2];
606 v
->value_float_4
[3] = ctx
->Current
.Attrib
[VERT_ATTRIB_TEX0
+ unit
][3];
609 case GL_COLOR_WRITEMASK
:
610 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[0][RCOMP
] ? 1 : 0;
611 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[0][GCOMP
] ? 1 : 0;
612 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[0][BCOMP
] ? 1 : 0;
613 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[0][ACOMP
] ? 1 : 0;
617 v
->value_bool
= ctx
->Current
.Attrib
[VERT_ATTRIB_EDGEFLAG
][0] == 1.0;
621 v
->value_enum
= ctx
->ReadBuffer
->ColorReadBuffer
;
624 case GL_MAP2_GRID_DOMAIN
:
625 v
->value_float_4
[0] = ctx
->Eval
.MapGrid2u1
;
626 v
->value_float_4
[1] = ctx
->Eval
.MapGrid2u2
;
627 v
->value_float_4
[2] = ctx
->Eval
.MapGrid2v1
;
628 v
->value_float_4
[3] = ctx
->Eval
.MapGrid2v2
;
631 case GL_TEXTURE_STACK_DEPTH
:
632 unit
= ctx
->Texture
.CurrentUnit
;
633 v
->value_int
= ctx
->TextureMatrixStack
[unit
].Depth
+ 1;
635 case GL_TEXTURE_MATRIX
:
636 unit
= ctx
->Texture
.CurrentUnit
;
637 v
->value_matrix
= ctx
->TextureMatrixStack
[unit
].Top
;
640 case GL_TEXTURE_COORD_ARRAY
:
641 case GL_TEXTURE_COORD_ARRAY_SIZE
:
642 case GL_TEXTURE_COORD_ARRAY_TYPE
:
643 case GL_TEXTURE_COORD_ARRAY_STRIDE
:
644 array
= &ctx
->Array
.ArrayObj
->VertexAttrib
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)];
645 v
->value_int
= *(GLuint
*) ((char *) array
+ d
->offset
);
648 case GL_ACTIVE_TEXTURE_ARB
:
649 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Texture
.CurrentUnit
;
651 case GL_CLIENT_ACTIVE_TEXTURE_ARB
:
652 v
->value_int
= GL_TEXTURE0_ARB
+ ctx
->Array
.ActiveTexture
;
655 case GL_MODELVIEW_STACK_DEPTH
:
656 case GL_PROJECTION_STACK_DEPTH
:
657 v
->value_int
= *(GLint
*) ((char *) ctx
+ d
->offset
) + 1;
660 case GL_MAX_TEXTURE_SIZE
:
661 case GL_MAX_3D_TEXTURE_SIZE
:
662 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB
:
663 p
= (GLuint
*) ((char *) ctx
+ d
->offset
);
664 v
->value_int
= 1 << (*p
- 1);
668 v
->value_int_4
[0] = ctx
->Scissor
.X
;
669 v
->value_int_4
[1] = ctx
->Scissor
.Y
;
670 v
->value_int_4
[2] = ctx
->Scissor
.Width
;
671 v
->value_int_4
[3] = ctx
->Scissor
.Height
;
676 ctx
->ListState
.CurrentList
? ctx
->ListState
.CurrentList
->Name
: 0;
679 if (!ctx
->CompileFlag
)
681 else if (ctx
->ExecuteFlag
)
682 v
->value_enum
= GL_COMPILE_AND_EXECUTE
;
684 v
->value_enum
= GL_COMPILE
;
688 v
->value_int_4
[0] = ctx
->Viewport
.X
;
689 v
->value_int_4
[1] = ctx
->Viewport
.Y
;
690 v
->value_int_4
[2] = ctx
->Viewport
.Width
;
691 v
->value_int_4
[3] = ctx
->Viewport
.Height
;
694 case GL_ACTIVE_STENCIL_FACE_EXT
:
695 v
->value_enum
= ctx
->Stencil
.ActiveFace
? GL_BACK
: GL_FRONT
;
698 case GL_STENCIL_FAIL
:
699 v
->value_enum
= ctx
->Stencil
.FailFunc
[ctx
->Stencil
.ActiveFace
];
701 case GL_STENCIL_FUNC
:
702 v
->value_enum
= ctx
->Stencil
.Function
[ctx
->Stencil
.ActiveFace
];
704 case GL_STENCIL_PASS_DEPTH_FAIL
:
705 v
->value_enum
= ctx
->Stencil
.ZFailFunc
[ctx
->Stencil
.ActiveFace
];
707 case GL_STENCIL_PASS_DEPTH_PASS
:
708 v
->value_enum
= ctx
->Stencil
.ZPassFunc
[ctx
->Stencil
.ActiveFace
];
711 v
->value_int
= _mesa_get_stencil_ref(ctx
, ctx
->Stencil
.ActiveFace
);
713 case GL_STENCIL_BACK_REF
:
714 v
->value_int
= _mesa_get_stencil_ref(ctx
, 1);
716 case GL_STENCIL_VALUE_MASK
:
717 v
->value_int
= ctx
->Stencil
.ValueMask
[ctx
->Stencil
.ActiveFace
];
719 case GL_STENCIL_WRITEMASK
:
720 v
->value_int
= ctx
->Stencil
.WriteMask
[ctx
->Stencil
.ActiveFace
];
723 case GL_NUM_EXTENSIONS
:
724 v
->value_int
= _mesa_get_extension_count(ctx
);
727 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES
:
728 v
->value_int
= _mesa_get_color_read_type(ctx
);
730 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES
:
731 v
->value_int
= _mesa_get_color_read_format(ctx
);
734 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB
:
735 v
->value_int
= ctx
->CurrentStack
->Depth
+ 1;
737 case GL_CURRENT_MATRIX_ARB
:
738 case GL_TRANSPOSE_CURRENT_MATRIX_ARB
:
739 v
->value_matrix
= ctx
->CurrentStack
->Top
;
742 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB
:
743 v
->value_int
= _mesa_get_compressed_formats(ctx
, NULL
);
745 case GL_COMPRESSED_TEXTURE_FORMATS_ARB
:
747 _mesa_get_compressed_formats(ctx
, v
->value_int_n
.ints
);
748 ASSERT(v
->value_int_n
.n
<= (int) ARRAY_SIZE(v
->value_int_n
.ints
));
751 case GL_MAX_VARYING_FLOATS_ARB
:
752 v
->value_int
= ctx
->Const
.MaxVarying
* 4;
755 /* Various object names */
757 case GL_TEXTURE_BINDING_1D
:
758 case GL_TEXTURE_BINDING_2D
:
759 case GL_TEXTURE_BINDING_3D
:
760 case GL_TEXTURE_BINDING_1D_ARRAY_EXT
:
761 case GL_TEXTURE_BINDING_2D_ARRAY_EXT
:
762 case GL_TEXTURE_BINDING_CUBE_MAP_ARB
:
763 case GL_TEXTURE_BINDING_RECTANGLE_NV
:
764 case GL_TEXTURE_BINDING_EXTERNAL_OES
:
765 case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY
:
766 case GL_TEXTURE_BINDING_2D_MULTISAMPLE
:
767 case GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY
:
768 unit
= ctx
->Texture
.CurrentUnit
;
770 ctx
->Texture
.Unit
[unit
].CurrentTex
[d
->offset
]->Name
;
773 /* GL_EXT_packed_float */
774 case GL_RGBA_SIGNED_COMPONENTS_EXT
:
776 /* Note: we only check the 0th color attachment. */
777 const struct gl_renderbuffer
*rb
=
778 ctx
->DrawBuffer
->_ColorDrawBuffers
[0];
779 if (rb
&& _mesa_is_format_signed(rb
->Format
)) {
780 /* Issue 17 of GL_EXT_packed_float: If a component (such as
781 * alpha) has zero bits, the component should not be considered
782 * signed and so the bit for the respective component should be
786 _mesa_get_format_bits(rb
->Format
, GL_RED_BITS
);
788 _mesa_get_format_bits(rb
->Format
, GL_GREEN_BITS
);
790 _mesa_get_format_bits(rb
->Format
, GL_BLUE_BITS
);
792 _mesa_get_format_bits(rb
->Format
, GL_ALPHA_BITS
);
794 _mesa_get_format_bits(rb
->Format
, GL_TEXTURE_LUMINANCE_SIZE
);
796 _mesa_get_format_bits(rb
->Format
, GL_TEXTURE_INTENSITY_SIZE
);
798 v
->value_int_4
[0] = r_bits
+ l_bits
+ i_bits
> 0;
799 v
->value_int_4
[1] = g_bits
+ l_bits
+ i_bits
> 0;
800 v
->value_int_4
[2] = b_bits
+ l_bits
+ i_bits
> 0;
801 v
->value_int_4
[3] = a_bits
+ i_bits
> 0;
807 v
->value_int_4
[3] = 0;
812 /* GL_ARB_vertex_buffer_object */
813 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB
:
814 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB
:
815 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB
:
816 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB
:
817 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB
:
818 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB
:
819 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB
:
820 buffer_obj
= (struct gl_buffer_object
**)
821 ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
822 v
->value_int
= (*buffer_obj
)->Name
;
824 case GL_ARRAY_BUFFER_BINDING_ARB
:
825 v
->value_int
= ctx
->Array
.ArrayBufferObj
->Name
;
827 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB
:
829 ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_TEX(ctx
->Array
.ActiveTexture
)].BufferObj
->Name
;
831 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB
:
832 v
->value_int
= ctx
->Array
.ArrayObj
->ElementArrayBufferObj
->Name
;
835 /* ARB_copy_buffer */
836 case GL_COPY_READ_BUFFER
:
837 v
->value_int
= ctx
->CopyReadBuffer
->Name
;
839 case GL_COPY_WRITE_BUFFER
:
840 v
->value_int
= ctx
->CopyWriteBuffer
->Name
;
843 case GL_PIXEL_PACK_BUFFER_BINDING_EXT
:
844 v
->value_int
= ctx
->Pack
.BufferObj
->Name
;
846 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT
:
847 v
->value_int
= ctx
->Unpack
.BufferObj
->Name
;
849 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
850 v
->value_int
= ctx
->TransformFeedback
.CurrentBuffer
->Name
;
852 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED
:
853 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Paused
;
855 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE
:
856 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Active
;
858 case GL_TRANSFORM_FEEDBACK_BINDING
:
859 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->Name
;
861 case GL_CURRENT_PROGRAM
:
863 ctx
->Shader
.ActiveProgram
? ctx
->Shader
.ActiveProgram
->Name
: 0;
865 case GL_READ_FRAMEBUFFER_BINDING_EXT
:
866 v
->value_int
= ctx
->ReadBuffer
->Name
;
868 case GL_RENDERBUFFER_BINDING_EXT
:
870 ctx
->CurrentRenderbuffer
? ctx
->CurrentRenderbuffer
->Name
: 0;
872 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES
:
873 v
->value_int
= ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_POINT_SIZE
].BufferObj
->Name
;
877 if (_mesa_get_clamp_fragment_color(ctx
))
878 COPY_4FV(v
->value_float_4
, ctx
->Fog
.Color
);
880 COPY_4FV(v
->value_float_4
, ctx
->Fog
.ColorUnclamped
);
882 case GL_COLOR_CLEAR_VALUE
:
883 if (_mesa_get_clamp_fragment_color(ctx
)) {
884 v
->value_float_4
[0] = CLAMP(ctx
->Color
.ClearColor
.f
[0], 0.0F
, 1.0F
);
885 v
->value_float_4
[1] = CLAMP(ctx
->Color
.ClearColor
.f
[1], 0.0F
, 1.0F
);
886 v
->value_float_4
[2] = CLAMP(ctx
->Color
.ClearColor
.f
[2], 0.0F
, 1.0F
);
887 v
->value_float_4
[3] = CLAMP(ctx
->Color
.ClearColor
.f
[3], 0.0F
, 1.0F
);
889 COPY_4FV(v
->value_float_4
, ctx
->Color
.ClearColor
.f
);
891 case GL_BLEND_COLOR_EXT
:
892 if (_mesa_get_clamp_fragment_color(ctx
))
893 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColor
);
895 COPY_4FV(v
->value_float_4
, ctx
->Color
.BlendColorUnclamped
);
897 case GL_ALPHA_TEST_REF
:
898 if (_mesa_get_clamp_fragment_color(ctx
))
899 v
->value_float
= ctx
->Color
.AlphaRef
;
901 v
->value_float
= ctx
->Color
.AlphaRefUnclamped
;
903 case GL_MAX_VERTEX_UNIFORM_VECTORS
:
904 v
->value_int
= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxUniformComponents
/ 4;
907 case GL_MAX_FRAGMENT_UNIFORM_VECTORS
:
908 v
->value_int
= ctx
->Const
.Program
[MESA_SHADER_FRAGMENT
].MaxUniformComponents
/ 4;
911 /* GL_ARB_texture_buffer_object */
912 case GL_TEXTURE_BUFFER_ARB
:
913 v
->value_int
= ctx
->Texture
.BufferObject
->Name
;
915 case GL_TEXTURE_BINDING_BUFFER_ARB
:
916 unit
= ctx
->Texture
.CurrentUnit
;
918 ctx
->Texture
.Unit
[unit
].CurrentTex
[TEXTURE_BUFFER_INDEX
]->Name
;
920 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB
:
922 struct gl_buffer_object
*buf
=
923 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
924 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObject
;
925 v
->value_int
= buf
? buf
->Name
: 0;
928 case GL_TEXTURE_BUFFER_FORMAT_ARB
:
929 v
->value_int
= ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
]
930 .CurrentTex
[TEXTURE_BUFFER_INDEX
]->BufferObjectFormat
;
933 /* GL_ARB_sampler_objects */
934 case GL_SAMPLER_BINDING
:
936 struct gl_sampler_object
*samp
=
937 ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
].Sampler
;
940 * The sampler object may have been deleted on another context,
941 * so we try to lookup the sampler object before returning its Name.
943 if (samp
&& _mesa_lookup_samplerobj(ctx
, samp
->Name
)) {
944 v
->value_int
= samp
->Name
;
950 /* GL_ARB_uniform_buffer_object */
951 case GL_UNIFORM_BUFFER_BINDING
:
952 v
->value_int
= ctx
->UniformBuffer
->Name
;
954 /* GL_ARB_timer_query */
956 if (ctx
->Driver
.GetTimestamp
) {
957 v
->value_int64
= ctx
->Driver
.GetTimestamp(ctx
);
960 _mesa_problem(ctx
, "driver doesn't implement GetTimestamp");
963 /* GL_ARB_shader_atomic_counters */
964 case GL_ATOMIC_COUNTER_BUFFER_BINDING
:
965 v
->value_int
= ctx
->AtomicBuffer
->Name
;
967 /* GL_ARB_draw_indirect */
968 case GL_DRAW_INDIRECT_BUFFER_BINDING
:
969 v
->value_int
= ctx
->DrawIndirectBuffer
->Name
;
975 * Check extra constraints on a struct value_desc descriptor
977 * If a struct value_desc has a non-NULL extra pointer, it means that
978 * there are a number of extra constraints to check or actions to
979 * perform. The extras is just an integer array where each integer
980 * encode different constraints or actions.
982 * \param ctx current context
983 * \param func name of calling glGet*v() function for error reporting
984 * \param d the struct value_desc that has the extra constraints
986 * \return GL_FALSE if all of the constraints were not satisfied,
990 check_extra(struct gl_context
*ctx
, const char *func
, const struct value_desc
*d
)
992 const GLuint version
= ctx
->Version
;
993 GLboolean api_check
= GL_FALSE
;
994 GLboolean api_found
= GL_FALSE
;
997 for (e
= d
->extra
; *e
!= EXTRA_END
; e
++) {
999 case EXTRA_VERSION_30
:
1000 api_check
= GL_TRUE
;
1002 api_found
= GL_TRUE
;
1004 case EXTRA_VERSION_31
:
1005 api_check
= GL_TRUE
;
1007 api_found
= GL_TRUE
;
1009 case EXTRA_VERSION_32
:
1010 api_check
= GL_TRUE
;
1012 api_found
= GL_TRUE
;
1014 case EXTRA_NEW_FRAG_CLAMP
:
1015 if (ctx
->NewState
& (_NEW_BUFFERS
| _NEW_FRAG_CLAMP
))
1016 _mesa_update_state(ctx
);
1019 api_check
= GL_TRUE
;
1020 if (ctx
->API
== API_OPENGLES2
)
1021 api_found
= GL_TRUE
;
1024 api_check
= GL_TRUE
;
1025 if (_mesa_is_gles3(ctx
))
1026 api_found
= GL_TRUE
;
1029 api_check
= GL_TRUE
;
1030 if (_mesa_is_desktop_gl(ctx
))
1031 api_found
= GL_TRUE
;
1033 case EXTRA_API_GL_CORE
:
1034 api_check
= GL_TRUE
;
1035 if (ctx
->API
== API_OPENGL_CORE
)
1036 api_found
= GL_TRUE
;
1038 case EXTRA_NEW_BUFFERS
:
1039 if (ctx
->NewState
& _NEW_BUFFERS
)
1040 _mesa_update_state(ctx
);
1042 case EXTRA_FLUSH_CURRENT
:
1043 FLUSH_CURRENT(ctx
, 0);
1045 case EXTRA_VALID_DRAW_BUFFER
:
1046 if (d
->pname
- GL_DRAW_BUFFER0_ARB
>= ctx
->Const
.MaxDrawBuffers
) {
1047 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(draw buffer %u)",
1048 func
, d
->pname
- GL_DRAW_BUFFER0_ARB
);
1052 case EXTRA_VALID_TEXTURE_UNIT
:
1053 if (ctx
->Texture
.CurrentUnit
>= ctx
->Const
.MaxTextureCoordUnits
) {
1054 _mesa_error(ctx
, GL_INVALID_OPERATION
, "%s(texture %u)",
1055 func
, ctx
->Texture
.CurrentUnit
);
1059 case EXTRA_VALID_CLIP_DISTANCE
:
1060 if (d
->pname
- GL_CLIP_DISTANCE0
>= ctx
->Const
.MaxClipPlanes
) {
1061 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(clip distance %u)",
1062 func
, d
->pname
- GL_CLIP_DISTANCE0
);
1066 case EXTRA_GLSL_130
:
1067 api_check
= GL_TRUE
;
1068 if (ctx
->Const
.GLSLVersion
>= 130)
1069 api_found
= GL_TRUE
;
1071 case EXTRA_EXT_UBO_GS4
:
1072 api_check
= GL_TRUE
;
1073 api_found
= (ctx
->Extensions
.ARB_uniform_buffer_object
&&
1074 _mesa_has_geometry_shaders(ctx
));
1076 case EXTRA_EXT_ATOMICS_GS4
:
1077 api_check
= GL_TRUE
;
1078 api_found
= (ctx
->Extensions
.ARB_shader_atomic_counters
&&
1079 _mesa_has_geometry_shaders(ctx
));
1081 case EXTRA_EXT_SHADER_IMAGE_GS4
:
1082 api_check
= GL_TRUE
;
1083 api_found
= (ctx
->Extensions
.ARB_shader_image_load_store
&&
1084 _mesa_has_geometry_shaders(ctx
));
1088 default: /* *e is a offset into the extension struct */
1089 api_check
= GL_TRUE
;
1090 if (*(GLboolean
*) ((char *) &ctx
->Extensions
+ *e
))
1091 api_found
= GL_TRUE
;
1096 if (api_check
&& !api_found
) {
1097 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1098 _mesa_lookup_enum_by_nr(d
->pname
));
1105 static const struct value_desc error_value
=
1106 { 0, 0, TYPE_INVALID
, NO_OFFSET
, NO_EXTRA
};
1109 * Find the struct value_desc corresponding to the enum 'pname'.
1111 * We hash the enum value to get an index into the 'table' array,
1112 * which holds the index in the 'values' array of struct value_desc.
1113 * Once we've found the entry, we do the extra checks, if any, then
1114 * look up the value and return a pointer to it.
1116 * If the value has to be computed (for example, it's the result of a
1117 * function call or we need to add 1 to it), we use the tmp 'v' to
1120 * \param func name of glGet*v() func for error reporting
1121 * \param pname the enum value we're looking up
1122 * \param p is were we return the pointer to the value
1123 * \param v a tmp union value variable in the calling glGet*v() function
1125 * \return the struct value_desc corresponding to the enum or a struct
1126 * value_desc of TYPE_INVALID if not found. This lets the calling
1127 * glGet*v() function jump right into a switch statement and
1128 * handle errors there instead of having to check for NULL.
1130 static const struct value_desc
*
1131 find_value(const char *func
, GLenum pname
, void **p
, union value
*v
)
1133 GET_CURRENT_CONTEXT(ctx
);
1134 struct gl_texture_unit
*unit
;
1136 const struct value_desc
*d
;
1140 /* We index into the table_set[] list of per-API hash tables using the API's
1141 * value in the gl_api enum. Since GLES 3 doesn't have an API_OPENGL* enum
1142 * value since it's compatible with GLES2 its entry in table_set[] is at the
1145 STATIC_ASSERT(Elements(table_set
) == API_OPENGL_LAST
+ 2);
1146 if (_mesa_is_gles3(ctx
)) {
1147 api
= API_OPENGL_LAST
+ 1;
1149 mask
= Elements(table(api
)) - 1;
1150 hash
= (pname
* prime_factor
);
1152 int idx
= table(api
)[hash
& mask
];
1154 /* If the enum isn't valid, the hash walk ends with index 0,
1155 * pointing to the first entry of values[] which doesn't hold
1156 * any valid enum. */
1157 if (unlikely(idx
== 0)) {
1158 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1159 _mesa_lookup_enum_by_nr(pname
));
1160 return &error_value
;
1164 if (likely(d
->pname
== pname
))
1170 if (unlikely(d
->extra
&& !check_extra(ctx
, func
, d
)))
1171 return &error_value
;
1173 switch (d
->location
) {
1175 *p
= ((char *) ctx
->DrawBuffer
+ d
->offset
);
1178 *p
= ((char *) ctx
+ d
->offset
);
1181 *p
= ((char *) ctx
->Array
.ArrayObj
+ d
->offset
);
1184 unit
= &ctx
->Texture
.Unit
[ctx
->Texture
.CurrentUnit
];
1185 *p
= ((char *) unit
+ d
->offset
);
1188 find_custom_value(ctx
, d
, v
);
1196 /* silence warning */
1197 return &error_value
;
1200 static const int transpose
[] = {
1208 _mesa_GetBooleanv(GLenum pname
, GLboolean
*params
)
1210 const struct value_desc
*d
;
1216 d
= find_value("glGetBooleanv", pname
, &p
, &v
);
1221 params
[0] = INT_TO_BOOLEAN(d
->offset
);
1226 params
[3] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[3]);
1229 params
[2] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[2]);
1232 params
[1] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[1]);
1235 params
[0] = FLOAT_TO_BOOLEAN(((GLfloat
*) p
)[0]);
1239 params
[0] = FLOAT_TO_BOOLEAN(((GLdouble
*) p
)[0]);
1243 params
[3] = INT_TO_BOOLEAN(((GLint
*) p
)[3]);
1245 params
[2] = INT_TO_BOOLEAN(((GLint
*) p
)[2]);
1248 params
[1] = INT_TO_BOOLEAN(((GLint
*) p
)[1]);
1251 params
[0] = INT_TO_BOOLEAN(((GLint
*) p
)[0]);
1255 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1256 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1260 params
[0] = INT64_TO_BOOLEAN(((GLint64
*) p
)[0]);
1264 params
[0] = ((GLboolean
*) p
)[0];
1268 m
= *(GLmatrix
**) p
;
1269 for (i
= 0; i
< 16; i
++)
1270 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[i
]);
1274 m
= *(GLmatrix
**) p
;
1275 for (i
= 0; i
< 16; i
++)
1276 params
[i
] = FLOAT_TO_BOOLEAN(m
->m
[transpose
[i
]]);
1287 shift
= d
->type
- TYPE_BIT_0
;
1288 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1294 _mesa_GetFloatv(GLenum pname
, GLfloat
*params
)
1296 const struct value_desc
*d
;
1302 d
= find_value("glGetFloatv", pname
, &p
, &v
);
1307 params
[0] = (GLfloat
) d
->offset
;
1312 params
[3] = ((GLfloat
*) p
)[3];
1315 params
[2] = ((GLfloat
*) p
)[2];
1318 params
[1] = ((GLfloat
*) p
)[1];
1321 params
[0] = ((GLfloat
*) p
)[0];
1325 params
[0] = (GLfloat
) (((GLdouble
*) p
)[0]);
1329 params
[3] = (GLfloat
) (((GLint
*) p
)[3]);
1331 params
[2] = (GLfloat
) (((GLint
*) p
)[2]);
1334 params
[1] = (GLfloat
) (((GLint
*) p
)[1]);
1337 params
[0] = (GLfloat
) (((GLint
*) p
)[0]);
1341 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1342 params
[i
] = INT_TO_FLOAT(v
.value_int_n
.ints
[i
]);
1346 params
[0] = (GLfloat
) (((GLint64
*) p
)[0]);
1350 params
[0] = BOOLEAN_TO_FLOAT(*(GLboolean
*) p
);
1354 m
= *(GLmatrix
**) p
;
1355 for (i
= 0; i
< 16; i
++)
1356 params
[i
] = m
->m
[i
];
1360 m
= *(GLmatrix
**) p
;
1361 for (i
= 0; i
< 16; i
++)
1362 params
[i
] = m
->m
[transpose
[i
]];
1373 shift
= d
->type
- TYPE_BIT_0
;
1374 params
[0] = BOOLEAN_TO_FLOAT((*(GLbitfield
*) p
>> shift
) & 1);
1380 _mesa_GetIntegerv(GLenum pname
, GLint
*params
)
1382 const struct value_desc
*d
;
1388 d
= find_value("glGetIntegerv", pname
, &p
, &v
);
1393 params
[0] = d
->offset
;
1397 params
[3] = IROUND(((GLfloat
*) p
)[3]);
1399 params
[2] = IROUND(((GLfloat
*) p
)[2]);
1401 params
[1] = IROUND(((GLfloat
*) p
)[1]);
1403 params
[0] = IROUND(((GLfloat
*) p
)[0]);
1407 params
[3] = FLOAT_TO_INT(((GLfloat
*) p
)[3]);
1409 params
[2] = FLOAT_TO_INT(((GLfloat
*) p
)[2]);
1411 params
[1] = FLOAT_TO_INT(((GLfloat
*) p
)[1]);
1413 params
[0] = FLOAT_TO_INT(((GLfloat
*) p
)[0]);
1417 params
[0] = FLOAT_TO_INT(((GLdouble
*) p
)[0]);
1421 params
[3] = ((GLint
*) p
)[3];
1423 params
[2] = ((GLint
*) p
)[2];
1426 params
[1] = ((GLint
*) p
)[1];
1429 params
[0] = ((GLint
*) p
)[0];
1433 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1434 params
[i
] = v
.value_int_n
.ints
[i
];
1438 params
[0] = INT64_TO_INT(((GLint64
*) p
)[0]);
1442 params
[0] = BOOLEAN_TO_INT(*(GLboolean
*) p
);
1446 m
= *(GLmatrix
**) p
;
1447 for (i
= 0; i
< 16; i
++)
1448 params
[i
] = FLOAT_TO_INT(m
->m
[i
]);
1452 m
= *(GLmatrix
**) p
;
1453 for (i
= 0; i
< 16; i
++)
1454 params
[i
] = FLOAT_TO_INT(m
->m
[transpose
[i
]]);
1465 shift
= d
->type
- TYPE_BIT_0
;
1466 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1472 _mesa_GetInteger64v(GLenum pname
, GLint64
*params
)
1474 const struct value_desc
*d
;
1480 d
= find_value("glGetInteger64v", pname
, &p
, &v
);
1485 params
[0] = d
->offset
;
1489 params
[3] = IROUND64(((GLfloat
*) p
)[3]);
1491 params
[2] = IROUND64(((GLfloat
*) p
)[2]);
1493 params
[1] = IROUND64(((GLfloat
*) p
)[1]);
1495 params
[0] = IROUND64(((GLfloat
*) p
)[0]);
1499 params
[3] = FLOAT_TO_INT64(((GLfloat
*) p
)[3]);
1501 params
[2] = FLOAT_TO_INT64(((GLfloat
*) p
)[2]);
1503 params
[1] = FLOAT_TO_INT64(((GLfloat
*) p
)[1]);
1505 params
[0] = FLOAT_TO_INT64(((GLfloat
*) p
)[0]);
1509 params
[0] = FLOAT_TO_INT64(((GLdouble
*) p
)[0]);
1513 params
[3] = ((GLint
*) p
)[3];
1515 params
[2] = ((GLint
*) p
)[2];
1518 params
[1] = ((GLint
*) p
)[1];
1521 params
[0] = ((GLint
*) p
)[0];
1525 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1526 params
[i
] = INT_TO_BOOLEAN(v
.value_int_n
.ints
[i
]);
1530 params
[0] = ((GLint64
*) p
)[0];
1534 params
[0] = ((GLboolean
*) p
)[0];
1538 m
= *(GLmatrix
**) p
;
1539 for (i
= 0; i
< 16; i
++)
1540 params
[i
] = FLOAT_TO_INT64(m
->m
[i
]);
1544 m
= *(GLmatrix
**) p
;
1545 for (i
= 0; i
< 16; i
++)
1546 params
[i
] = FLOAT_TO_INT64(m
->m
[transpose
[i
]]);
1557 shift
= d
->type
- TYPE_BIT_0
;
1558 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1564 _mesa_GetDoublev(GLenum pname
, GLdouble
*params
)
1566 const struct value_desc
*d
;
1572 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1577 params
[0] = d
->offset
;
1582 params
[3] = ((GLfloat
*) p
)[3];
1585 params
[2] = ((GLfloat
*) p
)[2];
1588 params
[1] = ((GLfloat
*) p
)[1];
1591 params
[0] = ((GLfloat
*) p
)[0];
1595 params
[0] = ((GLdouble
*) p
)[0];
1599 params
[3] = ((GLint
*) p
)[3];
1601 params
[2] = ((GLint
*) p
)[2];
1604 params
[1] = ((GLint
*) p
)[1];
1607 params
[0] = ((GLint
*) p
)[0];
1611 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
1612 params
[i
] = v
.value_int_n
.ints
[i
];
1616 params
[0] = (GLdouble
) (((GLint64
*) p
)[0]);
1620 params
[0] = *(GLboolean
*) p
;
1624 m
= *(GLmatrix
**) p
;
1625 for (i
= 0; i
< 16; i
++)
1626 params
[i
] = m
->m
[i
];
1630 m
= *(GLmatrix
**) p
;
1631 for (i
= 0; i
< 16; i
++)
1632 params
[i
] = m
->m
[transpose
[i
]];
1643 shift
= d
->type
- TYPE_BIT_0
;
1644 params
[0] = (*(GLbitfield
*) p
>> shift
) & 1;
1649 static enum value_type
1650 find_value_indexed(const char *func
, GLenum pname
, GLuint index
, union value
*v
)
1652 GET_CURRENT_CONTEXT(ctx
);
1657 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1659 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1661 v
->value_int
= (ctx
->Color
.BlendEnabled
>> index
) & 1;
1666 case GL_BLEND_SRC_RGB
:
1667 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1669 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1671 v
->value_int
= ctx
->Color
.Blend
[index
].SrcRGB
;
1673 case GL_BLEND_SRC_ALPHA
:
1674 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1676 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1678 v
->value_int
= ctx
->Color
.Blend
[index
].SrcA
;
1682 case GL_BLEND_DST_RGB
:
1683 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1685 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1687 v
->value_int
= ctx
->Color
.Blend
[index
].DstRGB
;
1689 case GL_BLEND_DST_ALPHA
:
1690 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1692 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1694 v
->value_int
= ctx
->Color
.Blend
[index
].DstA
;
1696 case GL_BLEND_EQUATION_RGB
:
1697 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1699 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1701 v
->value_int
= ctx
->Color
.Blend
[index
].EquationRGB
;
1703 case GL_BLEND_EQUATION_ALPHA
:
1704 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1706 if (!ctx
->Extensions
.ARB_draw_buffers_blend
)
1708 v
->value_int
= ctx
->Color
.Blend
[index
].EquationA
;
1711 case GL_COLOR_WRITEMASK
:
1712 if (index
>= ctx
->Const
.MaxDrawBuffers
)
1714 if (!ctx
->Extensions
.EXT_draw_buffers2
)
1716 v
->value_int_4
[0] = ctx
->Color
.ColorMask
[index
][RCOMP
] ? 1 : 0;
1717 v
->value_int_4
[1] = ctx
->Color
.ColorMask
[index
][GCOMP
] ? 1 : 0;
1718 v
->value_int_4
[2] = ctx
->Color
.ColorMask
[index
][BCOMP
] ? 1 : 0;
1719 v
->value_int_4
[3] = ctx
->Color
.ColorMask
[index
][ACOMP
] ? 1 : 0;
1722 case GL_TRANSFORM_FEEDBACK_BUFFER_START
:
1723 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1725 if (!ctx
->Extensions
.EXT_transform_feedback
)
1727 v
->value_int64
= ctx
->TransformFeedback
.CurrentObject
->Offset
[index
];
1730 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE
:
1731 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1733 if (!ctx
->Extensions
.EXT_transform_feedback
)
1736 = ctx
->TransformFeedback
.CurrentObject
->RequestedSize
[index
];
1739 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING
:
1740 if (index
>= ctx
->Const
.MaxTransformFeedbackBuffers
)
1742 if (!ctx
->Extensions
.EXT_transform_feedback
)
1744 v
->value_int
= ctx
->TransformFeedback
.CurrentObject
->BufferNames
[index
];
1747 case GL_UNIFORM_BUFFER_BINDING
:
1748 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1750 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1752 v
->value_int
= ctx
->UniformBufferBindings
[index
].BufferObject
->Name
;
1755 case GL_UNIFORM_BUFFER_START
:
1756 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1758 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1760 v
->value_int
= ctx
->UniformBufferBindings
[index
].Offset
;
1763 case GL_UNIFORM_BUFFER_SIZE
:
1764 if (index
>= ctx
->Const
.MaxUniformBufferBindings
)
1766 if (!ctx
->Extensions
.ARB_uniform_buffer_object
)
1768 v
->value_int
= ctx
->UniformBufferBindings
[index
].Size
;
1771 /* ARB_texture_multisample / GL3.2 */
1772 case GL_SAMPLE_MASK_VALUE
:
1775 if (!ctx
->Extensions
.ARB_texture_multisample
)
1777 v
->value_int
= ctx
->Multisample
.SampleMaskValue
;
1780 case GL_ATOMIC_COUNTER_BUFFER_BINDING
:
1781 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
1783 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
)
1785 v
->value_int
= ctx
->AtomicBufferBindings
[index
].BufferObject
->Name
;
1788 case GL_ATOMIC_COUNTER_BUFFER_START
:
1789 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
1791 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
)
1793 v
->value_int64
= ctx
->AtomicBufferBindings
[index
].Offset
;
1796 case GL_ATOMIC_COUNTER_BUFFER_SIZE
:
1797 if (!ctx
->Extensions
.ARB_shader_atomic_counters
)
1799 if (index
>= ctx
->Const
.MaxAtomicBufferBindings
)
1801 v
->value_int64
= ctx
->AtomicBufferBindings
[index
].Size
;
1804 case GL_VERTEX_BINDING_DIVISOR
:
1805 if (!_mesa_is_desktop_gl(ctx
) || !ctx
->Extensions
.ARB_instanced_arrays
)
1807 if (index
>= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
)
1809 v
->value_int
= ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_GENERIC(index
)].InstanceDivisor
;
1812 case GL_VERTEX_BINDING_OFFSET
:
1813 if (!_mesa_is_desktop_gl(ctx
))
1815 if (index
>= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
)
1817 v
->value_int
= ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_GENERIC(index
)].Offset
;
1820 case GL_VERTEX_BINDING_STRIDE
:
1821 if (!_mesa_is_desktop_gl(ctx
))
1823 if (index
>= ctx
->Const
.Program
[MESA_SHADER_VERTEX
].MaxAttribs
)
1825 v
->value_int
= ctx
->Array
.ArrayObj
->VertexBinding
[VERT_ATTRIB_GENERIC(index
)].Stride
;
1827 /* ARB_shader_image_load_store */
1828 case GL_IMAGE_BINDING_NAME
: {
1829 struct gl_texture_object
*t
;
1831 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1833 if (index
>= ctx
->Const
.MaxImageUnits
)
1836 t
= ctx
->ImageUnits
[index
].TexObj
;
1837 v
->value_int
= (t
? t
->Name
: 0);
1841 case GL_IMAGE_BINDING_LEVEL
:
1842 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1844 if (index
>= ctx
->Const
.MaxImageUnits
)
1847 v
->value_int
= ctx
->ImageUnits
[index
].Level
;
1850 case GL_IMAGE_BINDING_LAYERED
:
1851 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1853 if (index
>= ctx
->Const
.MaxImageUnits
)
1856 v
->value_int
= ctx
->ImageUnits
[index
].Layered
;
1859 case GL_IMAGE_BINDING_LAYER
:
1860 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1862 if (index
>= ctx
->Const
.MaxImageUnits
)
1865 v
->value_int
= ctx
->ImageUnits
[index
].Layer
;
1868 case GL_IMAGE_BINDING_ACCESS
:
1869 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1871 if (index
>= ctx
->Const
.MaxImageUnits
)
1874 v
->value_int
= ctx
->ImageUnits
[index
].Access
;
1877 case GL_IMAGE_BINDING_FORMAT
:
1878 if (!ctx
->Extensions
.ARB_shader_image_load_store
)
1880 if (index
>= ctx
->Const
.MaxImageUnits
)
1883 v
->value_int
= ctx
->ImageUnits
[index
].Format
;
1888 _mesa_error(ctx
, GL_INVALID_ENUM
, "%s(pname=%s)", func
,
1889 _mesa_lookup_enum_by_nr(pname
));
1890 return TYPE_INVALID
;
1892 _mesa_error(ctx
, GL_INVALID_VALUE
, "%s(pname=%s)", func
,
1893 _mesa_lookup_enum_by_nr(pname
));
1894 return TYPE_INVALID
;
1898 _mesa_GetBooleani_v( GLenum pname
, GLuint index
, GLboolean
*params
)
1901 enum value_type type
=
1902 find_value_indexed("glGetBooleani_v", pname
, index
, &v
);
1906 params
[0] = INT_TO_BOOLEAN(v
.value_int
);
1909 params
[0] = INT_TO_BOOLEAN(v
.value_int_4
[0]);
1910 params
[1] = INT_TO_BOOLEAN(v
.value_int_4
[1]);
1911 params
[2] = INT_TO_BOOLEAN(v
.value_int_4
[2]);
1912 params
[3] = INT_TO_BOOLEAN(v
.value_int_4
[3]);
1915 params
[0] = INT64_TO_BOOLEAN(v
.value_int
);
1918 ; /* nothing - GL error was recorded */
1923 _mesa_GetIntegeri_v( GLenum pname
, GLuint index
, GLint
*params
)
1926 enum value_type type
=
1927 find_value_indexed("glGetIntegeri_v", pname
, index
, &v
);
1931 params
[0] = v
.value_int
;
1934 params
[0] = v
.value_int_4
[0];
1935 params
[1] = v
.value_int_4
[1];
1936 params
[2] = v
.value_int_4
[2];
1937 params
[3] = v
.value_int_4
[3];
1940 params
[0] = INT64_TO_INT(v
.value_int
);
1943 ; /* nothing - GL error was recorded */
1948 _mesa_GetInteger64i_v( GLenum pname
, GLuint index
, GLint64
*params
)
1951 enum value_type type
=
1952 find_value_indexed("glGetInteger64i_v", pname
, index
, &v
);
1956 params
[0] = v
.value_int
;
1959 params
[0] = v
.value_int_4
[0];
1960 params
[1] = v
.value_int_4
[1];
1961 params
[2] = v
.value_int_4
[2];
1962 params
[3] = v
.value_int_4
[3];
1965 params
[0] = v
.value_int
;
1968 ; /* nothing - GL error was recorded */
1973 _mesa_GetFixedv(GLenum pname
, GLfixed
*params
)
1975 const struct value_desc
*d
;
1981 d
= find_value("glGetDoublev", pname
, &p
, &v
);
1986 params
[0] = INT_TO_FIXED(d
->offset
);
1991 params
[3] = FLOAT_TO_FIXED(((GLfloat
*) p
)[3]);
1994 params
[2] = FLOAT_TO_FIXED(((GLfloat
*) p
)[2]);
1997 params
[1] = FLOAT_TO_FIXED(((GLfloat
*) p
)[1]);
2000 params
[0] = FLOAT_TO_FIXED(((GLfloat
*) p
)[0]);
2004 params
[0] = FLOAT_TO_FIXED(((GLdouble
*) p
)[0]);
2008 params
[3] = INT_TO_FIXED(((GLint
*) p
)[3]);
2010 params
[2] = INT_TO_FIXED(((GLint
*) p
)[2]);
2013 params
[1] = INT_TO_FIXED(((GLint
*) p
)[1]);
2016 params
[0] = INT_TO_FIXED(((GLint
*) p
)[0]);
2020 for (i
= 0; i
< v
.value_int_n
.n
; i
++)
2021 params
[i
] = INT_TO_FIXED(v
.value_int_n
.ints
[i
]);
2025 params
[0] = ((GLint64
*) p
)[0];
2029 params
[0] = BOOLEAN_TO_FIXED(((GLboolean
*) p
)[0]);
2033 m
= *(GLmatrix
**) p
;
2034 for (i
= 0; i
< 16; i
++)
2035 params
[i
] = FLOAT_TO_FIXED(m
->m
[i
]);
2039 m
= *(GLmatrix
**) p
;
2040 for (i
= 0; i
< 16; i
++)
2041 params
[i
] = FLOAT_TO_FIXED(m
->m
[transpose
[i
]]);
2052 shift
= d
->type
- TYPE_BIT_0
;
2053 params
[0] = BOOLEAN_TO_FIXED((*(GLbitfield
*) p
>> shift
) & 1);