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[mesa.git] / src / mesa / main / get.c
1 /*
2 * Copyright (C) 2010 Brian Paul All Rights Reserved.
3 * Copyright (C) 2010 Intel Corporation
4 *
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:
11 *
12 * The above copyright notice and this permission notice shall be included
13 * in all copies or substantial portions of the Software.
14 *
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.
22 *
23 * Author: Kristian Høgsberg <krh@bitplanet.net>
24 */
25
26 #include "glheader.h"
27 #include "context.h"
28 #include "blend.h"
29 #include "enable.h"
30 #include "enums.h"
31 #include "errors.h"
32 #include "extensions.h"
33 #include "get.h"
34 #include "macros.h"
35 #include "mtypes.h"
36 #include "state.h"
37 #include "texcompress.h"
38 #include "framebuffer.h"
39 #include "samplerobj.h"
40 #include "stencil.h"
41
42 /* This is a table driven implemetation of the glGet*v() functions.
43 * The basic idea is that most getters just look up an int somewhere
44 * in struct gl_context and then convert it to a bool or float according to
45 * which of glGetIntegerv() glGetBooleanv() etc is being called.
46 * Instead of generating code to do this, we can just record the enum
47 * value and the offset into struct gl_context in an array of structs. Then
48 * in glGet*(), we lookup the struct for the enum in question, and use
49 * the offset to get the int we need.
50 *
51 * Sometimes we need to look up a float, a boolean, a bit in a
52 * bitfield, a matrix or other types instead, so we need to track the
53 * type of the value in struct gl_context. And sometimes the value isn't in
54 * struct gl_context but in the drawbuffer, the array object, current texture
55 * unit, or maybe it's a computed value. So we need to also track
56 * where or how to find the value. Finally, we sometimes need to
57 * check that one of a number of extensions are enabled, the GL
58 * version or flush or call _mesa_update_state(). This is done by
59 * attaching optional extra information to the value description
60 * struct, it's sort of like an array of opcodes that describe extra
61 * checks or actions.
62 *
63 * Putting all this together we end up with struct value_desc below,
64 * and with a couple of macros to help, the table of struct value_desc
65 * is about as concise as the specification in the old python script.
66 */
67
68 #define FLOAT_TO_BOOLEAN(X) ( (X) ? GL_TRUE : GL_FALSE )
69 #define FLOAT_TO_FIXED(F) ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \
70 ((F) * 65536.0f < INT_MIN) ? INT_MIN : \
71 (GLint) ((F) * 65536.0f) )
72
73 #define INT_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
74 #define INT_TO_FIXED(I) ( ((I) > SHRT_MAX) ? INT_MAX : \
75 ((I) < SHRT_MIN) ? INT_MIN : \
76 (GLint) ((I) * 65536) )
77
78 #define INT64_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
79 #define INT64_TO_INT(I) ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )
80
81 #define BOOLEAN_TO_INT(B) ( (GLint) (B) )
82 #define BOOLEAN_TO_INT64(B) ( (GLint64) (B) )
83 #define BOOLEAN_TO_FLOAT(B) ( (B) ? 1.0F : 0.0F )
84 #define BOOLEAN_TO_FIXED(B) ( (GLint) ((B) ? 1 : 0) << 16 )
85
86 #define ENUM_TO_INT64(E) ( (GLint64) (E) )
87 #define ENUM_TO_FIXED(E) (E)
88
89 enum value_type {
90 TYPE_INVALID,
91 TYPE_INT,
92 TYPE_INT_2,
93 TYPE_INT_3,
94 TYPE_INT_4,
95 TYPE_INT_N,
96 TYPE_INT64,
97 TYPE_ENUM,
98 TYPE_ENUM_2,
99 TYPE_BOOLEAN,
100 TYPE_BIT_0,
101 TYPE_BIT_1,
102 TYPE_BIT_2,
103 TYPE_BIT_3,
104 TYPE_BIT_4,
105 TYPE_BIT_5,
106 TYPE_BIT_6,
107 TYPE_BIT_7,
108 TYPE_FLOAT,
109 TYPE_FLOAT_2,
110 TYPE_FLOAT_3,
111 TYPE_FLOAT_4,
112 TYPE_FLOATN,
113 TYPE_FLOATN_2,
114 TYPE_FLOATN_3,
115 TYPE_FLOATN_4,
116 TYPE_DOUBLEN,
117 TYPE_DOUBLEN_2,
118 TYPE_MATRIX,
119 TYPE_MATRIX_T,
120 TYPE_CONST
121 };
122
123 enum value_location {
124 LOC_BUFFER,
125 LOC_CONTEXT,
126 LOC_ARRAY,
127 LOC_TEXUNIT,
128 LOC_CUSTOM
129 };
130
131 enum value_extra {
132 EXTRA_END = 0x8000,
133 EXTRA_VERSION_30,
134 EXTRA_VERSION_31,
135 EXTRA_VERSION_32,
136 EXTRA_VERSION_40,
137 EXTRA_API_GL,
138 EXTRA_API_GL_CORE,
139 EXTRA_API_ES2,
140 EXTRA_API_ES3,
141 EXTRA_NEW_BUFFERS,
142 EXTRA_NEW_FRAG_CLAMP,
143 EXTRA_VALID_DRAW_BUFFER,
144 EXTRA_VALID_TEXTURE_UNIT,
145 EXTRA_VALID_CLIP_DISTANCE,
146 EXTRA_FLUSH_CURRENT,
147 EXTRA_GLSL_130,
148 EXTRA_EXT_UBO_GS4,
149 EXTRA_EXT_ATOMICS_GS4,
150 EXTRA_EXT_SHADER_IMAGE_GS4,
151 };
152
153 #define NO_EXTRA NULL
154 #define NO_OFFSET 0
155
156 struct value_desc {
157 GLenum pname;
158 GLubyte location; /**< enum value_location */
159 GLubyte type; /**< enum value_type */
160 int offset;
161 const int *extra;
162 };
163
164 union value {
165 GLfloat value_float;
166 GLfloat value_float_4[4];
167 GLdouble value_double_2[2];
168 GLmatrix *value_matrix;
169 GLint value_int;
170 GLint value_int_4[4];
171 GLint64 value_int64;
172 GLenum value_enum;
173
174 /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
175 struct {
176 GLint n, ints[100];
177 } value_int_n;
178 GLboolean value_bool;
179 };
180
181 #define BUFFER_FIELD(field, type) \
182 LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
183 #define CONTEXT_FIELD(field, type) \
184 LOC_CONTEXT, type, offsetof(struct gl_context, field)
185 #define ARRAY_FIELD(field, type) \
186 LOC_ARRAY, type, offsetof(struct gl_vertex_array_object, field)
187 #undef CONST /* already defined through windows.h */
188 #define CONST(value) \
189 LOC_CONTEXT, TYPE_CONST, value
190
191 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
192 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
193 #define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
194
195 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
196 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
197 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
198 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
199 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
200 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
201 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
202 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
203 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
204 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
205 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
206 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
207 #define CONTEXT_BIT6(field) CONTEXT_FIELD(field, TYPE_BIT_6)
208 #define CONTEXT_BIT7(field) CONTEXT_FIELD(field, TYPE_BIT_7)
209 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
210 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
211 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
212 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
213 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
214 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
215
216 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
217 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
218 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
219
220 #define EXT(f) \
221 offsetof(struct gl_extensions, f)
222
223 #define EXTRA_EXT(e) \
224 static const int extra_##e[] = { \
225 EXT(e), EXTRA_END \
226 }
227
228 #define EXTRA_EXT2(e1, e2) \
229 static const int extra_##e1##_##e2[] = { \
230 EXT(e1), EXT(e2), EXTRA_END \
231 }
232
233 /* The 'extra' mechanism is a way to specify extra checks (such as
234 * extensions or specific gl versions) or actions (flush current, new
235 * buffers) that we need to do before looking up an enum. We need to
236 * declare them all up front so we can refer to them in the value_desc
237 * structs below.
238 *
239 * Each EXTRA_ will be executed. For EXTRA_* enums of extensions and API
240 * versions, listing multiple ones in an array means an error will be thrown
241 * only if none of them are available. If you need to check for "AND"
242 * behavior, you would need to make a custom EXTRA_ enum.
243 */
244
245 static const int extra_new_buffers[] = {
246 EXTRA_NEW_BUFFERS,
247 EXTRA_END
248 };
249
250 static const int extra_new_frag_clamp[] = {
251 EXTRA_NEW_FRAG_CLAMP,
252 EXTRA_END
253 };
254
255 static const int extra_valid_draw_buffer[] = {
256 EXTRA_VALID_DRAW_BUFFER,
257 EXTRA_END
258 };
259
260 static const int extra_valid_texture_unit[] = {
261 EXTRA_VALID_TEXTURE_UNIT,
262 EXTRA_END
263 };
264
265 static const int extra_valid_clip_distance[] = {
266 EXTRA_VALID_CLIP_DISTANCE,
267 EXTRA_END
268 };
269
270 static const int extra_flush_current_valid_texture_unit[] = {
271 EXTRA_FLUSH_CURRENT,
272 EXTRA_VALID_TEXTURE_UNIT,
273 EXTRA_END
274 };
275
276 static const int extra_flush_current[] = {
277 EXTRA_FLUSH_CURRENT,
278 EXTRA_END
279 };
280
281 static const int extra_EXT_texture_integer[] = {
282 EXT(EXT_texture_integer),
283 EXTRA_END
284 };
285
286 static const int extra_EXT_texture_integer_and_new_buffers[] = {
287 EXT(EXT_texture_integer),
288 EXTRA_NEW_BUFFERS,
289 EXTRA_END
290 };
291
292 static const int extra_GLSL_130_es3[] = {
293 EXTRA_GLSL_130,
294 EXTRA_API_ES3,
295 EXTRA_END
296 };
297
298 static const int extra_texture_buffer_object[] = {
299 EXTRA_API_GL_CORE,
300 EXTRA_VERSION_31,
301 EXT(ARB_texture_buffer_object),
302 EXTRA_END
303 };
304
305 static const int extra_ARB_transform_feedback2_api_es3[] = {
306 EXT(ARB_transform_feedback2),
307 EXTRA_API_ES3,
308 EXTRA_END
309 };
310
311 static const int extra_ARB_uniform_buffer_object_and_geometry_shader[] = {
312 EXTRA_EXT_UBO_GS4,
313 EXTRA_END
314 };
315
316 static const int extra_ARB_ES2_compatibility_api_es2[] = {
317 EXT(ARB_ES2_compatibility),
318 EXTRA_API_ES2,
319 EXTRA_END
320 };
321
322 static const int extra_ARB_ES3_compatibility_api_es3[] = {
323 EXT(ARB_ES3_compatibility),
324 EXTRA_API_ES3,
325 EXTRA_END
326 };
327
328 static const int extra_EXT_framebuffer_sRGB_and_new_buffers[] = {
329 EXT(EXT_framebuffer_sRGB),
330 EXTRA_NEW_BUFFERS,
331 EXTRA_END
332 };
333
334 static const int extra_EXT_packed_float[] = {
335 EXT(EXT_packed_float),
336 EXTRA_NEW_BUFFERS,
337 EXTRA_END
338 };
339
340 static const int extra_EXT_texture_array_es3[] = {
341 EXT(EXT_texture_array),
342 EXTRA_API_ES3,
343 EXTRA_END
344 };
345
346 static const int extra_ARB_shader_atomic_counters_and_geometry_shader[] = {
347 EXTRA_EXT_ATOMICS_GS4,
348 EXTRA_END
349 };
350
351 static const int extra_ARB_shader_image_load_store_and_geometry_shader[] = {
352 EXTRA_EXT_SHADER_IMAGE_GS4,
353 EXTRA_END
354 };
355
356 EXTRA_EXT(ARB_texture_cube_map);
357 EXTRA_EXT(EXT_texture_array);
358 EXTRA_EXT(NV_fog_distance);
359 EXTRA_EXT(EXT_texture_filter_anisotropic);
360 EXTRA_EXT(NV_point_sprite);
361 EXTRA_EXT(NV_texture_rectangle);
362 EXTRA_EXT(EXT_stencil_two_side);
363 EXTRA_EXT(EXT_depth_bounds_test);
364 EXTRA_EXT(ARB_depth_clamp);
365 EXTRA_EXT(ATI_fragment_shader);
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);
371 EXTRA_EXT(ARB_sync);
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_texture_cube_map_array);
387 EXTRA_EXT(ARB_texture_buffer_range);
388 EXTRA_EXT(ARB_texture_multisample);
389 EXTRA_EXT(ARB_texture_gather);
390 EXTRA_EXT(ARB_shader_atomic_counters);
391 EXTRA_EXT(ARB_draw_indirect);
392 EXTRA_EXT(ARB_shader_image_load_store);
393 EXTRA_EXT(ARB_viewport_array);
394 EXTRA_EXT(ARB_compute_shader);
395 EXTRA_EXT(ARB_gpu_shader5);
396 EXTRA_EXT2(ARB_transform_feedback3, ARB_gpu_shader5);
397
398 static const int
399 extra_ARB_color_buffer_float_or_glcore[] = {
400 EXT(ARB_color_buffer_float),
401 EXTRA_API_GL_CORE,
402 EXTRA_END
403 };
404
405 static const int
406 extra_NV_primitive_restart[] = {
407 EXT(NV_primitive_restart),
408 EXTRA_END
409 };
410
411 static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };
412 static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };
413 static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };
414 static const int extra_version_40[] = { EXTRA_VERSION_40, EXTRA_END };
415
416 static const int extra_gl30_es3[] = {
417 EXTRA_VERSION_30,
418 EXTRA_API_ES3,
419 EXTRA_END,
420 };
421
422 static const int extra_gl32_es3[] = {
423 EXTRA_VERSION_32,
424 EXTRA_API_ES3,
425 EXTRA_END,
426 };
427
428 static const int extra_gl32_ARB_geometry_shader4[] = {
429 EXTRA_VERSION_32,
430 EXT(ARB_geometry_shader4),
431 EXTRA_END
432 };
433
434 static const int extra_gl40_ARB_sample_shading[] = {
435 EXTRA_VERSION_40,
436 EXT(ARB_sample_shading),
437 EXTRA_END
438 };
439
440 static const int
441 extra_ARB_vertex_program_api_es2[] = {
442 EXT(ARB_vertex_program),
443 EXTRA_API_ES2,
444 EXTRA_END
445 };
446
447 /* The ReadBuffer get token is valid under either full GL or under
448 * GLES2 if the NV_read_buffer extension is available. */
449 static const int
450 extra_NV_read_buffer_api_gl[] = {
451 EXTRA_API_ES2,
452 EXTRA_API_GL,
453 EXTRA_END
454 };
455
456 static const int extra_core_ARB_color_buffer_float_and_new_buffers[] = {
457 EXTRA_API_GL_CORE,
458 EXT(ARB_color_buffer_float),
459 EXTRA_NEW_BUFFERS,
460 EXTRA_END
461 };
462
463 /* This is the big table describing all the enums we accept in
464 * glGet*v(). The table is partitioned into six parts: enums
465 * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
466 * between OpenGL and GLES, enums exclusive to GLES, etc for the
467 * remaining combinations. To look up the enums valid in a given API
468 * we will use a hash table specific to that API. These tables are in
469 * turn generated at build time and included through get_hash.h.
470 */
471
472 #include "get_hash.h"
473
474 /* All we need now is a way to look up the value struct from the enum.
475 * The code generated by gcc for the old generated big switch
476 * statement is a big, balanced, open coded if/else tree, essentially
477 * an unrolled binary search. It would be natural to sort the new
478 * enum table and use bsearch(), but we will use a read-only hash
479 * table instead. bsearch() has a nice guaranteed worst case
480 * performance, but we're also guaranteed to hit that worst case
481 * (log2(n) iterations) for about half the enums. Instead, using an
482 * open addressing hash table, we can find the enum on the first try
483 * for 80% of the enums, 1 collision for 10% and never more than 5
484 * collisions for any enum (typical numbers). And the code is very
485 * simple, even though it feels a little magic. */
486
487 #ifdef GET_DEBUG
488 static void
489 print_table_stats(int api)
490 {
491 int i, j, collisions[11], count, hash, mask;
492 const struct value_desc *d;
493 const char *api_names[] = {
494 [API_OPENGL_COMPAT] = "GL",
495 [API_OPENGL_CORE] = "GL_CORE",
496 [API_OPENGLES] = "GLES",
497 [API_OPENGLES2] = "GLES2",
498 };
499 const char *api_name;
500
501 api_name = api < Elements(api_names) ? api_names[api] : "N/A";
502 count = 0;
503 mask = Elements(table(api)) - 1;
504 memset(collisions, 0, sizeof collisions);
505
506 for (i = 0; i < Elements(table(api)); i++) {
507 if (!table(api)[i])
508 continue;
509 count++;
510 d = &values[table(api)[i]];
511 hash = (d->pname * prime_factor);
512 j = 0;
513 while (1) {
514 if (values[table(api)[hash & mask]].pname == d->pname)
515 break;
516 hash += prime_step;
517 j++;
518 }
519
520 if (j < 10)
521 collisions[j]++;
522 else
523 collisions[10]++;
524 }
525
526 printf("number of enums for %s: %d (total %ld)\n",
527 api_name, count, Elements(values));
528 for (i = 0; i < Elements(collisions) - 1; i++)
529 if (collisions[i] > 0)
530 printf(" %d enums with %d %scollisions\n",
531 collisions[i], i, i == 10 ? "or more " : "");
532 }
533 #endif
534
535 /**
536 * Initialize the enum hash for a given API
537 *
538 * This is called from one_time_init() to insert the enum values that
539 * are valid for the API in question into the enum hash table.
540 *
541 * \param the current context, for determining the API in question
542 */
543 void _mesa_init_get_hash(struct gl_context *ctx)
544 {
545 #ifdef GET_DEBUG
546 print_table_stats(ctx->API);
547 #else
548 (void) ctx;
549 #endif
550 }
551
552 /**
553 * Handle irregular enums
554 *
555 * Some values don't conform to the "well-known type at context
556 * pointer + offset" pattern, so we have this function to catch all
557 * the corner cases. Typically, it's a computed value or a one-off
558 * pointer to a custom struct or something.
559 *
560 * In this case we can't return a pointer to the value, so we'll have
561 * to use the temporary variable 'v' declared back in the calling
562 * glGet*v() function to store the result.
563 *
564 * \param ctx the current context
565 * \param d the struct value_desc that describes the enum
566 * \param v pointer to the tmp declared in the calling glGet*v() function
567 */
568 static void
569 find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
570 {
571 struct gl_buffer_object **buffer_obj;
572 struct gl_vertex_attrib_array *array;
573 GLuint unit, *p;
574
575 switch (d->pname) {
576 case GL_MAJOR_VERSION:
577 v->value_int = ctx->Version / 10;
578 break;
579 case GL_MINOR_VERSION:
580 v->value_int = ctx->Version % 10;
581 break;
582
583 case GL_TEXTURE_1D:
584 case GL_TEXTURE_2D:
585 case GL_TEXTURE_3D:
586 case GL_TEXTURE_CUBE_MAP_ARB:
587 case GL_TEXTURE_RECTANGLE_NV:
588 case GL_TEXTURE_EXTERNAL_OES:
589 v->value_bool = _mesa_IsEnabled(d->pname);
590 break;
591
592 case GL_LINE_STIPPLE_PATTERN:
593 /* This is the only GLushort, special case it here by promoting
594 * to an int rather than introducing a new type. */
595 v->value_int = ctx->Line.StipplePattern;
596 break;
597
598 case GL_CURRENT_RASTER_TEXTURE_COORDS:
599 unit = ctx->Texture.CurrentUnit;
600 v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
601 v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
602 v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
603 v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
604 break;
605
606 case GL_CURRENT_TEXTURE_COORDS:
607 unit = ctx->Texture.CurrentUnit;
608 v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
609 v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
610 v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
611 v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
612 break;
613
614 case GL_COLOR_WRITEMASK:
615 v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
616 v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
617 v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
618 v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
619 break;
620
621 case GL_EDGE_FLAG:
622 v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
623 break;
624
625 case GL_READ_BUFFER:
626 v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
627 break;
628
629 case GL_MAP2_GRID_DOMAIN:
630 v->value_float_4[0] = ctx->Eval.MapGrid2u1;
631 v->value_float_4[1] = ctx->Eval.MapGrid2u2;
632 v->value_float_4[2] = ctx->Eval.MapGrid2v1;
633 v->value_float_4[3] = ctx->Eval.MapGrid2v2;
634 break;
635
636 case GL_TEXTURE_STACK_DEPTH:
637 unit = ctx->Texture.CurrentUnit;
638 v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
639 break;
640 case GL_TEXTURE_MATRIX:
641 unit = ctx->Texture.CurrentUnit;
642 v->value_matrix = ctx->TextureMatrixStack[unit].Top;
643 break;
644
645 case GL_TEXTURE_COORD_ARRAY:
646 case GL_TEXTURE_COORD_ARRAY_SIZE:
647 case GL_TEXTURE_COORD_ARRAY_TYPE:
648 case GL_TEXTURE_COORD_ARRAY_STRIDE:
649 array = &ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)];
650 v->value_int = *(GLuint *) ((char *) array + d->offset);
651 break;
652
653 case GL_ACTIVE_TEXTURE_ARB:
654 v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
655 break;
656 case GL_CLIENT_ACTIVE_TEXTURE_ARB:
657 v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
658 break;
659
660 case GL_MODELVIEW_STACK_DEPTH:
661 case GL_PROJECTION_STACK_DEPTH:
662 v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
663 break;
664
665 case GL_MAX_TEXTURE_SIZE:
666 case GL_MAX_3D_TEXTURE_SIZE:
667 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
668 p = (GLuint *) ((char *) ctx + d->offset);
669 v->value_int = 1 << (*p - 1);
670 break;
671
672 case GL_SCISSOR_BOX:
673 v->value_int_4[0] = ctx->Scissor.ScissorArray[0].X;
674 v->value_int_4[1] = ctx->Scissor.ScissorArray[0].Y;
675 v->value_int_4[2] = ctx->Scissor.ScissorArray[0].Width;
676 v->value_int_4[3] = ctx->Scissor.ScissorArray[0].Height;
677 break;
678
679 case GL_SCISSOR_TEST:
680 v->value_bool = ctx->Scissor.EnableFlags & 1;
681 break;
682
683 case GL_LIST_INDEX:
684 v->value_int =
685 ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
686 break;
687 case GL_LIST_MODE:
688 if (!ctx->CompileFlag)
689 v->value_enum = 0;
690 else if (ctx->ExecuteFlag)
691 v->value_enum = GL_COMPILE_AND_EXECUTE;
692 else
693 v->value_enum = GL_COMPILE;
694 break;
695
696 case GL_VIEWPORT:
697 v->value_float_4[0] = ctx->ViewportArray[0].X;
698 v->value_float_4[1] = ctx->ViewportArray[0].Y;
699 v->value_float_4[2] = ctx->ViewportArray[0].Width;
700 v->value_float_4[3] = ctx->ViewportArray[0].Height;
701 break;
702
703 case GL_DEPTH_RANGE:
704 v->value_double_2[0] = ctx->ViewportArray[0].Near;
705 v->value_double_2[1] = ctx->ViewportArray[0].Far;
706 break;
707
708 case GL_ACTIVE_STENCIL_FACE_EXT:
709 v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
710 break;
711
712 case GL_STENCIL_FAIL:
713 v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
714 break;
715 case GL_STENCIL_FUNC:
716 v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
717 break;
718 case GL_STENCIL_PASS_DEPTH_FAIL:
719 v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
720 break;
721 case GL_STENCIL_PASS_DEPTH_PASS:
722 v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
723 break;
724 case GL_STENCIL_REF:
725 v->value_int = _mesa_get_stencil_ref(ctx, ctx->Stencil.ActiveFace);
726 break;
727 case GL_STENCIL_BACK_REF:
728 v->value_int = _mesa_get_stencil_ref(ctx, 1);
729 break;
730 case GL_STENCIL_VALUE_MASK:
731 v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
732 break;
733 case GL_STENCIL_WRITEMASK:
734 v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
735 break;
736
737 case GL_NUM_EXTENSIONS:
738 v->value_int = _mesa_get_extension_count(ctx);
739 break;
740
741 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
742 v->value_int = _mesa_get_color_read_type(ctx);
743 break;
744 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
745 v->value_int = _mesa_get_color_read_format(ctx);
746 break;
747
748 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
749 v->value_int = ctx->CurrentStack->Depth + 1;
750 break;
751 case GL_CURRENT_MATRIX_ARB:
752 case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
753 v->value_matrix = ctx->CurrentStack->Top;
754 break;
755
756 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
757 v->value_int = _mesa_get_compressed_formats(ctx, NULL);
758 break;
759 case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
760 v->value_int_n.n =
761 _mesa_get_compressed_formats(ctx, v->value_int_n.ints);
762 ASSERT(v->value_int_n.n <= (int) ARRAY_SIZE(v->value_int_n.ints));
763 break;
764
765 case GL_MAX_VARYING_FLOATS_ARB:
766 v->value_int = ctx->Const.MaxVarying * 4;
767 break;
768
769 /* Various object names */
770
771 case GL_TEXTURE_BINDING_1D:
772 case GL_TEXTURE_BINDING_2D:
773 case GL_TEXTURE_BINDING_3D:
774 case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
775 case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
776 case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
777 case GL_TEXTURE_BINDING_RECTANGLE_NV:
778 case GL_TEXTURE_BINDING_EXTERNAL_OES:
779 case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY:
780 case GL_TEXTURE_BINDING_2D_MULTISAMPLE:
781 case GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY:
782 unit = ctx->Texture.CurrentUnit;
783 v->value_int =
784 ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
785 break;
786
787 /* GL_EXT_packed_float */
788 case GL_RGBA_SIGNED_COMPONENTS_EXT:
789 {
790 /* Note: we only check the 0th color attachment. */
791 const struct gl_renderbuffer *rb =
792 ctx->DrawBuffer->_ColorDrawBuffers[0];
793 if (rb && _mesa_is_format_signed(rb->Format)) {
794 /* Issue 17 of GL_EXT_packed_float: If a component (such as
795 * alpha) has zero bits, the component should not be considered
796 * signed and so the bit for the respective component should be
797 * zeroed.
798 */
799 GLint r_bits =
800 _mesa_get_format_bits(rb->Format, GL_RED_BITS);
801 GLint g_bits =
802 _mesa_get_format_bits(rb->Format, GL_GREEN_BITS);
803 GLint b_bits =
804 _mesa_get_format_bits(rb->Format, GL_BLUE_BITS);
805 GLint a_bits =
806 _mesa_get_format_bits(rb->Format, GL_ALPHA_BITS);
807 GLint l_bits =
808 _mesa_get_format_bits(rb->Format, GL_TEXTURE_LUMINANCE_SIZE);
809 GLint i_bits =
810 _mesa_get_format_bits(rb->Format, GL_TEXTURE_INTENSITY_SIZE);
811
812 v->value_int_4[0] = r_bits + l_bits + i_bits > 0;
813 v->value_int_4[1] = g_bits + l_bits + i_bits > 0;
814 v->value_int_4[2] = b_bits + l_bits + i_bits > 0;
815 v->value_int_4[3] = a_bits + i_bits > 0;
816 }
817 else {
818 v->value_int_4[0] =
819 v->value_int_4[1] =
820 v->value_int_4[2] =
821 v->value_int_4[3] = 0;
822 }
823 }
824 break;
825
826 /* GL_ARB_vertex_buffer_object */
827 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
828 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
829 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
830 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
831 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
832 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
833 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
834 buffer_obj = (struct gl_buffer_object **)
835 ((char *) ctx->Array.VAO + d->offset);
836 v->value_int = (*buffer_obj)->Name;
837 break;
838 case GL_ARRAY_BUFFER_BINDING_ARB:
839 v->value_int = ctx->Array.ArrayBufferObj->Name;
840 break;
841 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
842 v->value_int =
843 ctx->Array.VAO->VertexBinding[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj->Name;
844 break;
845 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
846 v->value_int = ctx->Array.VAO->IndexBufferObj->Name;
847 break;
848
849 /* ARB_copy_buffer */
850 case GL_COPY_READ_BUFFER:
851 v->value_int = ctx->CopyReadBuffer->Name;
852 break;
853 case GL_COPY_WRITE_BUFFER:
854 v->value_int = ctx->CopyWriteBuffer->Name;
855 break;
856
857 case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
858 v->value_int = ctx->Pack.BufferObj->Name;
859 break;
860 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
861 v->value_int = ctx->Unpack.BufferObj->Name;
862 break;
863 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
864 v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
865 break;
866 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
867 v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
868 break;
869 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
870 v->value_int = ctx->TransformFeedback.CurrentObject->Active;
871 break;
872 case GL_TRANSFORM_FEEDBACK_BINDING:
873 v->value_int = ctx->TransformFeedback.CurrentObject->Name;
874 break;
875 case GL_CURRENT_PROGRAM:
876 /* The Changelog of the ARB_separate_shader_objects spec says:
877 *
878 * 24 25 Jul 2011 pbrown Remove the language erroneously deleting
879 * CURRENT_PROGRAM. In the EXT extension, this
880 * token was aliased to ACTIVE_PROGRAM_EXT, and
881 * was used to indicate the last program set by
882 * either ActiveProgramEXT or UseProgram. In
883 * the ARB extension, the SSO active programs
884 * are now program pipeline object state and
885 * CURRENT_PROGRAM should still be used to query
886 * the last program set by UseProgram (bug 7822).
887 */
888 v->value_int =
889 ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
890 break;
891 case GL_READ_FRAMEBUFFER_BINDING_EXT:
892 v->value_int = ctx->ReadBuffer->Name;
893 break;
894 case GL_RENDERBUFFER_BINDING_EXT:
895 v->value_int =
896 ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
897 break;
898 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
899 v->value_int = ctx->Array.VAO->VertexBinding[VERT_ATTRIB_POINT_SIZE].BufferObj->Name;
900 break;
901
902 case GL_FOG_COLOR:
903 if (_mesa_get_clamp_fragment_color(ctx))
904 COPY_4FV(v->value_float_4, ctx->Fog.Color);
905 else
906 COPY_4FV(v->value_float_4, ctx->Fog.ColorUnclamped);
907 break;
908 case GL_COLOR_CLEAR_VALUE:
909 if (_mesa_get_clamp_fragment_color(ctx)) {
910 v->value_float_4[0] = CLAMP(ctx->Color.ClearColor.f[0], 0.0F, 1.0F);
911 v->value_float_4[1] = CLAMP(ctx->Color.ClearColor.f[1], 0.0F, 1.0F);
912 v->value_float_4[2] = CLAMP(ctx->Color.ClearColor.f[2], 0.0F, 1.0F);
913 v->value_float_4[3] = CLAMP(ctx->Color.ClearColor.f[3], 0.0F, 1.0F);
914 } else
915 COPY_4FV(v->value_float_4, ctx->Color.ClearColor.f);
916 break;
917 case GL_BLEND_COLOR_EXT:
918 if (_mesa_get_clamp_fragment_color(ctx))
919 COPY_4FV(v->value_float_4, ctx->Color.BlendColor);
920 else
921 COPY_4FV(v->value_float_4, ctx->Color.BlendColorUnclamped);
922 break;
923 case GL_ALPHA_TEST_REF:
924 if (_mesa_get_clamp_fragment_color(ctx))
925 v->value_float = ctx->Color.AlphaRef;
926 else
927 v->value_float = ctx->Color.AlphaRefUnclamped;
928 break;
929 case GL_MAX_VERTEX_UNIFORM_VECTORS:
930 v->value_int = ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents / 4;
931 break;
932
933 case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
934 v->value_int = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents / 4;
935 break;
936
937 /* GL_ARB_texture_buffer_object */
938 case GL_TEXTURE_BUFFER_ARB:
939 v->value_int = ctx->Texture.BufferObject->Name;
940 break;
941 case GL_TEXTURE_BINDING_BUFFER_ARB:
942 unit = ctx->Texture.CurrentUnit;
943 v->value_int =
944 ctx->Texture.Unit[unit].CurrentTex[TEXTURE_BUFFER_INDEX]->Name;
945 break;
946 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB:
947 {
948 struct gl_buffer_object *buf =
949 ctx->Texture.Unit[ctx->Texture.CurrentUnit]
950 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObject;
951 v->value_int = buf ? buf->Name : 0;
952 }
953 break;
954 case GL_TEXTURE_BUFFER_FORMAT_ARB:
955 v->value_int = ctx->Texture.Unit[ctx->Texture.CurrentUnit]
956 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObjectFormat;
957 break;
958
959 /* GL_ARB_sampler_objects */
960 case GL_SAMPLER_BINDING:
961 {
962 struct gl_sampler_object *samp =
963 ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler;
964
965 /*
966 * The sampler object may have been deleted on another context,
967 * so we try to lookup the sampler object before returning its Name.
968 */
969 if (samp && _mesa_lookup_samplerobj(ctx, samp->Name)) {
970 v->value_int = samp->Name;
971 } else {
972 v->value_int = 0;
973 }
974 }
975 break;
976 /* GL_ARB_uniform_buffer_object */
977 case GL_UNIFORM_BUFFER_BINDING:
978 v->value_int = ctx->UniformBuffer->Name;
979 break;
980 /* GL_ARB_timer_query */
981 case GL_TIMESTAMP:
982 if (ctx->Driver.GetTimestamp) {
983 v->value_int64 = ctx->Driver.GetTimestamp(ctx);
984 }
985 else {
986 _mesa_problem(ctx, "driver doesn't implement GetTimestamp");
987 }
988 break;
989 /* GL_KHR_DEBUG */
990 case GL_DEBUG_LOGGED_MESSAGES:
991 case GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH:
992 case GL_DEBUG_GROUP_STACK_DEPTH:
993 v->value_int = _mesa_get_debug_state_int(ctx, d->pname);
994 break;
995 /* GL_ARB_shader_atomic_counters */
996 case GL_ATOMIC_COUNTER_BUFFER_BINDING:
997 v->value_int = ctx->AtomicBuffer->Name;
998 break;
999 /* GL_ARB_draw_indirect */
1000 case GL_DRAW_INDIRECT_BUFFER_BINDING:
1001 v->value_int = ctx->DrawIndirectBuffer->Name;
1002 break;
1003 /* GL_ARB_separate_shader_objects */
1004 case GL_PROGRAM_PIPELINE_BINDING:
1005 if (ctx->Pipeline.Current) {
1006 v->value_int = ctx->Pipeline.Current->Name;
1007 } else {
1008 v->value_int = 0;
1009 }
1010 break;
1011 }
1012 }
1013
1014 /**
1015 * Check extra constraints on a struct value_desc descriptor
1016 *
1017 * If a struct value_desc has a non-NULL extra pointer, it means that
1018 * there are a number of extra constraints to check or actions to
1019 * perform. The extras is just an integer array where each integer
1020 * encode different constraints or actions.
1021 *
1022 * \param ctx current context
1023 * \param func name of calling glGet*v() function for error reporting
1024 * \param d the struct value_desc that has the extra constraints
1025 *
1026 * \return GL_FALSE if all of the constraints were not satisfied,
1027 * otherwise GL_TRUE.
1028 */
1029 static GLboolean
1030 check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
1031 {
1032 const GLuint version = ctx->Version;
1033 GLboolean api_check = GL_FALSE;
1034 GLboolean api_found = GL_FALSE;
1035 const int *e;
1036
1037 for (e = d->extra; *e != EXTRA_END; e++) {
1038 switch (*e) {
1039 case EXTRA_VERSION_30:
1040 api_check = GL_TRUE;
1041 if (version >= 30)
1042 api_found = GL_TRUE;
1043 break;
1044 case EXTRA_VERSION_31:
1045 api_check = GL_TRUE;
1046 if (version >= 31)
1047 api_found = GL_TRUE;
1048 break;
1049 case EXTRA_VERSION_32:
1050 api_check = GL_TRUE;
1051 if (version >= 32)
1052 api_found = GL_TRUE;
1053 break;
1054 case EXTRA_NEW_FRAG_CLAMP:
1055 if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1056 _mesa_update_state(ctx);
1057 break;
1058 case EXTRA_API_ES2:
1059 api_check = GL_TRUE;
1060 if (ctx->API == API_OPENGLES2)
1061 api_found = GL_TRUE;
1062 break;
1063 case EXTRA_API_ES3:
1064 api_check = GL_TRUE;
1065 if (_mesa_is_gles3(ctx))
1066 api_found = GL_TRUE;
1067 break;
1068 case EXTRA_API_GL:
1069 api_check = GL_TRUE;
1070 if (_mesa_is_desktop_gl(ctx))
1071 api_found = GL_TRUE;
1072 break;
1073 case EXTRA_API_GL_CORE:
1074 api_check = GL_TRUE;
1075 if (ctx->API == API_OPENGL_CORE)
1076 api_found = GL_TRUE;
1077 break;
1078 case EXTRA_NEW_BUFFERS:
1079 if (ctx->NewState & _NEW_BUFFERS)
1080 _mesa_update_state(ctx);
1081 break;
1082 case EXTRA_FLUSH_CURRENT:
1083 FLUSH_CURRENT(ctx, 0);
1084 break;
1085 case EXTRA_VALID_DRAW_BUFFER:
1086 if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
1087 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
1088 func, d->pname - GL_DRAW_BUFFER0_ARB);
1089 return GL_FALSE;
1090 }
1091 break;
1092 case EXTRA_VALID_TEXTURE_UNIT:
1093 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
1094 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
1095 func, ctx->Texture.CurrentUnit);
1096 return GL_FALSE;
1097 }
1098 break;
1099 case EXTRA_VALID_CLIP_DISTANCE:
1100 if (d->pname - GL_CLIP_DISTANCE0 >= ctx->Const.MaxClipPlanes) {
1101 _mesa_error(ctx, GL_INVALID_ENUM, "%s(clip distance %u)",
1102 func, d->pname - GL_CLIP_DISTANCE0);
1103 return GL_FALSE;
1104 }
1105 break;
1106 case EXTRA_GLSL_130:
1107 api_check = GL_TRUE;
1108 if (ctx->Const.GLSLVersion >= 130)
1109 api_found = GL_TRUE;
1110 break;
1111 case EXTRA_EXT_UBO_GS4:
1112 api_check = GL_TRUE;
1113 api_found = (ctx->Extensions.ARB_uniform_buffer_object &&
1114 _mesa_has_geometry_shaders(ctx));
1115 break;
1116 case EXTRA_EXT_ATOMICS_GS4:
1117 api_check = GL_TRUE;
1118 api_found = (ctx->Extensions.ARB_shader_atomic_counters &&
1119 _mesa_has_geometry_shaders(ctx));
1120 break;
1121 case EXTRA_EXT_SHADER_IMAGE_GS4:
1122 api_check = GL_TRUE;
1123 api_found = (ctx->Extensions.ARB_shader_image_load_store &&
1124 _mesa_has_geometry_shaders(ctx));
1125 break;
1126 case EXTRA_END:
1127 break;
1128 default: /* *e is a offset into the extension struct */
1129 api_check = GL_TRUE;
1130 if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
1131 api_found = GL_TRUE;
1132 break;
1133 }
1134 }
1135
1136 if (api_check && !api_found) {
1137 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1138 _mesa_lookup_enum_by_nr(d->pname));
1139 return GL_FALSE;
1140 }
1141
1142 return GL_TRUE;
1143 }
1144
1145 static const struct value_desc error_value =
1146 { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
1147
1148 /**
1149 * Find the struct value_desc corresponding to the enum 'pname'.
1150 *
1151 * We hash the enum value to get an index into the 'table' array,
1152 * which holds the index in the 'values' array of struct value_desc.
1153 * Once we've found the entry, we do the extra checks, if any, then
1154 * look up the value and return a pointer to it.
1155 *
1156 * If the value has to be computed (for example, it's the result of a
1157 * function call or we need to add 1 to it), we use the tmp 'v' to
1158 * store the result.
1159 *
1160 * \param func name of glGet*v() func for error reporting
1161 * \param pname the enum value we're looking up
1162 * \param p is were we return the pointer to the value
1163 * \param v a tmp union value variable in the calling glGet*v() function
1164 *
1165 * \return the struct value_desc corresponding to the enum or a struct
1166 * value_desc of TYPE_INVALID if not found. This lets the calling
1167 * glGet*v() function jump right into a switch statement and
1168 * handle errors there instead of having to check for NULL.
1169 */
1170 static const struct value_desc *
1171 find_value(const char *func, GLenum pname, void **p, union value *v)
1172 {
1173 GET_CURRENT_CONTEXT(ctx);
1174 struct gl_texture_unit *unit;
1175 int mask, hash;
1176 const struct value_desc *d;
1177 int api;
1178
1179 api = ctx->API;
1180 /* We index into the table_set[] list of per-API hash tables using the API's
1181 * value in the gl_api enum. Since GLES 3 doesn't have an API_OPENGL* enum
1182 * value since it's compatible with GLES2 its entry in table_set[] is at the
1183 * end.
1184 */
1185 STATIC_ASSERT(Elements(table_set) == API_OPENGL_LAST + 2);
1186 if (_mesa_is_gles3(ctx)) {
1187 api = API_OPENGL_LAST + 1;
1188 }
1189 mask = Elements(table(api)) - 1;
1190 hash = (pname * prime_factor);
1191 while (1) {
1192 int idx = table(api)[hash & mask];
1193
1194 /* If the enum isn't valid, the hash walk ends with index 0,
1195 * pointing to the first entry of values[] which doesn't hold
1196 * any valid enum. */
1197 if (unlikely(idx == 0)) {
1198 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1199 _mesa_lookup_enum_by_nr(pname));
1200 return &error_value;
1201 }
1202
1203 d = &values[idx];
1204 if (likely(d->pname == pname))
1205 break;
1206
1207 hash += prime_step;
1208 }
1209
1210 if (unlikely(d->extra && !check_extra(ctx, func, d)))
1211 return &error_value;
1212
1213 switch (d->location) {
1214 case LOC_BUFFER:
1215 *p = ((char *) ctx->DrawBuffer + d->offset);
1216 return d;
1217 case LOC_CONTEXT:
1218 *p = ((char *) ctx + d->offset);
1219 return d;
1220 case LOC_ARRAY:
1221 *p = ((char *) ctx->Array.VAO + d->offset);
1222 return d;
1223 case LOC_TEXUNIT:
1224 unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1225 *p = ((char *) unit + d->offset);
1226 return d;
1227 case LOC_CUSTOM:
1228 find_custom_value(ctx, d, v);
1229 *p = v;
1230 return d;
1231 default:
1232 assert(0);
1233 break;
1234 }
1235
1236 /* silence warning */
1237 return &error_value;
1238 }
1239
1240 static const int transpose[] = {
1241 0, 4, 8, 12,
1242 1, 5, 9, 13,
1243 2, 6, 10, 14,
1244 3, 7, 11, 15
1245 };
1246
1247 void GLAPIENTRY
1248 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
1249 {
1250 const struct value_desc *d;
1251 union value v;
1252 GLmatrix *m;
1253 int shift, i;
1254 void *p;
1255
1256 d = find_value("glGetBooleanv", pname, &p, &v);
1257 switch (d->type) {
1258 case TYPE_INVALID:
1259 break;
1260 case TYPE_CONST:
1261 params[0] = INT_TO_BOOLEAN(d->offset);
1262 break;
1263
1264 case TYPE_FLOAT_4:
1265 case TYPE_FLOATN_4:
1266 params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
1267 case TYPE_FLOAT_3:
1268 case TYPE_FLOATN_3:
1269 params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
1270 case TYPE_FLOAT_2:
1271 case TYPE_FLOATN_2:
1272 params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
1273 case TYPE_FLOAT:
1274 case TYPE_FLOATN:
1275 params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
1276 break;
1277
1278 case TYPE_DOUBLEN_2:
1279 params[1] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[1]);
1280 case TYPE_DOUBLEN:
1281 params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
1282 break;
1283
1284 case TYPE_INT_4:
1285 params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
1286 case TYPE_INT_3:
1287 params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
1288 case TYPE_INT_2:
1289 case TYPE_ENUM_2:
1290 params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
1291 case TYPE_INT:
1292 case TYPE_ENUM:
1293 params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
1294 break;
1295
1296 case TYPE_INT_N:
1297 for (i = 0; i < v.value_int_n.n; i++)
1298 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1299 break;
1300
1301 case TYPE_INT64:
1302 params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
1303 break;
1304
1305 case TYPE_BOOLEAN:
1306 params[0] = ((GLboolean*) p)[0];
1307 break;
1308
1309 case TYPE_MATRIX:
1310 m = *(GLmatrix **) p;
1311 for (i = 0; i < 16; i++)
1312 params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
1313 break;
1314
1315 case TYPE_MATRIX_T:
1316 m = *(GLmatrix **) p;
1317 for (i = 0; i < 16; i++)
1318 params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
1319 break;
1320
1321 case TYPE_BIT_0:
1322 case TYPE_BIT_1:
1323 case TYPE_BIT_2:
1324 case TYPE_BIT_3:
1325 case TYPE_BIT_4:
1326 case TYPE_BIT_5:
1327 case TYPE_BIT_6:
1328 case TYPE_BIT_7:
1329 shift = d->type - TYPE_BIT_0;
1330 params[0] = (*(GLbitfield *) p >> shift) & 1;
1331 break;
1332 }
1333 }
1334
1335 void GLAPIENTRY
1336 _mesa_GetFloatv(GLenum pname, GLfloat *params)
1337 {
1338 const struct value_desc *d;
1339 union value v;
1340 GLmatrix *m;
1341 int shift, i;
1342 void *p;
1343
1344 d = find_value("glGetFloatv", pname, &p, &v);
1345 switch (d->type) {
1346 case TYPE_INVALID:
1347 break;
1348 case TYPE_CONST:
1349 params[0] = (GLfloat) d->offset;
1350 break;
1351
1352 case TYPE_FLOAT_4:
1353 case TYPE_FLOATN_4:
1354 params[3] = ((GLfloat *) p)[3];
1355 case TYPE_FLOAT_3:
1356 case TYPE_FLOATN_3:
1357 params[2] = ((GLfloat *) p)[2];
1358 case TYPE_FLOAT_2:
1359 case TYPE_FLOATN_2:
1360 params[1] = ((GLfloat *) p)[1];
1361 case TYPE_FLOAT:
1362 case TYPE_FLOATN:
1363 params[0] = ((GLfloat *) p)[0];
1364 break;
1365
1366 case TYPE_DOUBLEN_2:
1367 params[1] = (GLfloat) (((GLdouble *) p)[1]);
1368 case TYPE_DOUBLEN:
1369 params[0] = (GLfloat) (((GLdouble *) p)[0]);
1370 break;
1371
1372 case TYPE_INT_4:
1373 params[3] = (GLfloat) (((GLint *) p)[3]);
1374 case TYPE_INT_3:
1375 params[2] = (GLfloat) (((GLint *) p)[2]);
1376 case TYPE_INT_2:
1377 case TYPE_ENUM_2:
1378 params[1] = (GLfloat) (((GLint *) p)[1]);
1379 case TYPE_INT:
1380 case TYPE_ENUM:
1381 params[0] = (GLfloat) (((GLint *) p)[0]);
1382 break;
1383
1384 case TYPE_INT_N:
1385 for (i = 0; i < v.value_int_n.n; i++)
1386 params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
1387 break;
1388
1389 case TYPE_INT64:
1390 params[0] = (GLfloat) (((GLint64 *) p)[0]);
1391 break;
1392
1393 case TYPE_BOOLEAN:
1394 params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
1395 break;
1396
1397 case TYPE_MATRIX:
1398 m = *(GLmatrix **) p;
1399 for (i = 0; i < 16; i++)
1400 params[i] = m->m[i];
1401 break;
1402
1403 case TYPE_MATRIX_T:
1404 m = *(GLmatrix **) p;
1405 for (i = 0; i < 16; i++)
1406 params[i] = m->m[transpose[i]];
1407 break;
1408
1409 case TYPE_BIT_0:
1410 case TYPE_BIT_1:
1411 case TYPE_BIT_2:
1412 case TYPE_BIT_3:
1413 case TYPE_BIT_4:
1414 case TYPE_BIT_5:
1415 case TYPE_BIT_6:
1416 case TYPE_BIT_7:
1417 shift = d->type - TYPE_BIT_0;
1418 params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
1419 break;
1420 }
1421 }
1422
1423 void GLAPIENTRY
1424 _mesa_GetIntegerv(GLenum pname, GLint *params)
1425 {
1426 const struct value_desc *d;
1427 union value v;
1428 GLmatrix *m;
1429 int shift, i;
1430 void *p;
1431
1432 d = find_value("glGetIntegerv", pname, &p, &v);
1433 switch (d->type) {
1434 case TYPE_INVALID:
1435 break;
1436 case TYPE_CONST:
1437 params[0] = d->offset;
1438 break;
1439
1440 case TYPE_FLOAT_4:
1441 params[3] = IROUND(((GLfloat *) p)[3]);
1442 case TYPE_FLOAT_3:
1443 params[2] = IROUND(((GLfloat *) p)[2]);
1444 case TYPE_FLOAT_2:
1445 params[1] = IROUND(((GLfloat *) p)[1]);
1446 case TYPE_FLOAT:
1447 params[0] = IROUND(((GLfloat *) p)[0]);
1448 break;
1449
1450 case TYPE_FLOATN_4:
1451 params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
1452 case TYPE_FLOATN_3:
1453 params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
1454 case TYPE_FLOATN_2:
1455 params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
1456 case TYPE_FLOATN:
1457 params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
1458 break;
1459
1460 case TYPE_DOUBLEN_2:
1461 params[1] = FLOAT_TO_INT(((GLdouble *) p)[1]);
1462 case TYPE_DOUBLEN:
1463 params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
1464 break;
1465
1466 case TYPE_INT_4:
1467 params[3] = ((GLint *) p)[3];
1468 case TYPE_INT_3:
1469 params[2] = ((GLint *) p)[2];
1470 case TYPE_INT_2:
1471 case TYPE_ENUM_2:
1472 params[1] = ((GLint *) p)[1];
1473 case TYPE_INT:
1474 case TYPE_ENUM:
1475 params[0] = ((GLint *) p)[0];
1476 break;
1477
1478 case TYPE_INT_N:
1479 for (i = 0; i < v.value_int_n.n; i++)
1480 params[i] = v.value_int_n.ints[i];
1481 break;
1482
1483 case TYPE_INT64:
1484 params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
1485 break;
1486
1487 case TYPE_BOOLEAN:
1488 params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
1489 break;
1490
1491 case TYPE_MATRIX:
1492 m = *(GLmatrix **) p;
1493 for (i = 0; i < 16; i++)
1494 params[i] = FLOAT_TO_INT(m->m[i]);
1495 break;
1496
1497 case TYPE_MATRIX_T:
1498 m = *(GLmatrix **) p;
1499 for (i = 0; i < 16; i++)
1500 params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
1501 break;
1502
1503 case TYPE_BIT_0:
1504 case TYPE_BIT_1:
1505 case TYPE_BIT_2:
1506 case TYPE_BIT_3:
1507 case TYPE_BIT_4:
1508 case TYPE_BIT_5:
1509 case TYPE_BIT_6:
1510 case TYPE_BIT_7:
1511 shift = d->type - TYPE_BIT_0;
1512 params[0] = (*(GLbitfield *) p >> shift) & 1;
1513 break;
1514 }
1515 }
1516
1517 void GLAPIENTRY
1518 _mesa_GetInteger64v(GLenum pname, GLint64 *params)
1519 {
1520 const struct value_desc *d;
1521 union value v;
1522 GLmatrix *m;
1523 int shift, i;
1524 void *p;
1525
1526 d = find_value("glGetInteger64v", pname, &p, &v);
1527 switch (d->type) {
1528 case TYPE_INVALID:
1529 break;
1530 case TYPE_CONST:
1531 params[0] = d->offset;
1532 break;
1533
1534 case TYPE_FLOAT_4:
1535 params[3] = IROUND64(((GLfloat *) p)[3]);
1536 case TYPE_FLOAT_3:
1537 params[2] = IROUND64(((GLfloat *) p)[2]);
1538 case TYPE_FLOAT_2:
1539 params[1] = IROUND64(((GLfloat *) p)[1]);
1540 case TYPE_FLOAT:
1541 params[0] = IROUND64(((GLfloat *) p)[0]);
1542 break;
1543
1544 case TYPE_FLOATN_4:
1545 params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
1546 case TYPE_FLOATN_3:
1547 params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
1548 case TYPE_FLOATN_2:
1549 params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
1550 case TYPE_FLOATN:
1551 params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
1552 break;
1553
1554 case TYPE_DOUBLEN_2:
1555 params[1] = FLOAT_TO_INT64(((GLdouble *) p)[1]);
1556 case TYPE_DOUBLEN:
1557 params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
1558 break;
1559
1560 case TYPE_INT_4:
1561 params[3] = ((GLint *) p)[3];
1562 case TYPE_INT_3:
1563 params[2] = ((GLint *) p)[2];
1564 case TYPE_INT_2:
1565 case TYPE_ENUM_2:
1566 params[1] = ((GLint *) p)[1];
1567 case TYPE_INT:
1568 case TYPE_ENUM:
1569 params[0] = ((GLint *) p)[0];
1570 break;
1571
1572 case TYPE_INT_N:
1573 for (i = 0; i < v.value_int_n.n; i++)
1574 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1575 break;
1576
1577 case TYPE_INT64:
1578 params[0] = ((GLint64 *) p)[0];
1579 break;
1580
1581 case TYPE_BOOLEAN:
1582 params[0] = ((GLboolean*) p)[0];
1583 break;
1584
1585 case TYPE_MATRIX:
1586 m = *(GLmatrix **) p;
1587 for (i = 0; i < 16; i++)
1588 params[i] = FLOAT_TO_INT64(m->m[i]);
1589 break;
1590
1591 case TYPE_MATRIX_T:
1592 m = *(GLmatrix **) p;
1593 for (i = 0; i < 16; i++)
1594 params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
1595 break;
1596
1597 case TYPE_BIT_0:
1598 case TYPE_BIT_1:
1599 case TYPE_BIT_2:
1600 case TYPE_BIT_3:
1601 case TYPE_BIT_4:
1602 case TYPE_BIT_5:
1603 case TYPE_BIT_6:
1604 case TYPE_BIT_7:
1605 shift = d->type - TYPE_BIT_0;
1606 params[0] = (*(GLbitfield *) p >> shift) & 1;
1607 break;
1608 }
1609 }
1610
1611 void GLAPIENTRY
1612 _mesa_GetDoublev(GLenum pname, GLdouble *params)
1613 {
1614 const struct value_desc *d;
1615 union value v;
1616 GLmatrix *m;
1617 int shift, i;
1618 void *p;
1619
1620 d = find_value("glGetDoublev", pname, &p, &v);
1621 switch (d->type) {
1622 case TYPE_INVALID:
1623 break;
1624 case TYPE_CONST:
1625 params[0] = d->offset;
1626 break;
1627
1628 case TYPE_FLOAT_4:
1629 case TYPE_FLOATN_4:
1630 params[3] = ((GLfloat *) p)[3];
1631 case TYPE_FLOAT_3:
1632 case TYPE_FLOATN_3:
1633 params[2] = ((GLfloat *) p)[2];
1634 case TYPE_FLOAT_2:
1635 case TYPE_FLOATN_2:
1636 params[1] = ((GLfloat *) p)[1];
1637 case TYPE_FLOAT:
1638 case TYPE_FLOATN:
1639 params[0] = ((GLfloat *) p)[0];
1640 break;
1641
1642 case TYPE_DOUBLEN_2:
1643 params[1] = ((GLdouble *) p)[1];
1644 case TYPE_DOUBLEN:
1645 params[0] = ((GLdouble *) p)[0];
1646 break;
1647
1648 case TYPE_INT_4:
1649 params[3] = ((GLint *) p)[3];
1650 case TYPE_INT_3:
1651 params[2] = ((GLint *) p)[2];
1652 case TYPE_INT_2:
1653 case TYPE_ENUM_2:
1654 params[1] = ((GLint *) p)[1];
1655 case TYPE_INT:
1656 case TYPE_ENUM:
1657 params[0] = ((GLint *) p)[0];
1658 break;
1659
1660 case TYPE_INT_N:
1661 for (i = 0; i < v.value_int_n.n; i++)
1662 params[i] = v.value_int_n.ints[i];
1663 break;
1664
1665 case TYPE_INT64:
1666 params[0] = (GLdouble) (((GLint64 *) p)[0]);
1667 break;
1668
1669 case TYPE_BOOLEAN:
1670 params[0] = *(GLboolean*) p;
1671 break;
1672
1673 case TYPE_MATRIX:
1674 m = *(GLmatrix **) p;
1675 for (i = 0; i < 16; i++)
1676 params[i] = m->m[i];
1677 break;
1678
1679 case TYPE_MATRIX_T:
1680 m = *(GLmatrix **) p;
1681 for (i = 0; i < 16; i++)
1682 params[i] = m->m[transpose[i]];
1683 break;
1684
1685 case TYPE_BIT_0:
1686 case TYPE_BIT_1:
1687 case TYPE_BIT_2:
1688 case TYPE_BIT_3:
1689 case TYPE_BIT_4:
1690 case TYPE_BIT_5:
1691 case TYPE_BIT_6:
1692 case TYPE_BIT_7:
1693 shift = d->type - TYPE_BIT_0;
1694 params[0] = (*(GLbitfield *) p >> shift) & 1;
1695 break;
1696 }
1697 }
1698
1699 static enum value_type
1700 find_value_indexed(const char *func, GLenum pname, GLuint index, union value *v)
1701 {
1702 GET_CURRENT_CONTEXT(ctx);
1703
1704 switch (pname) {
1705
1706 case GL_BLEND:
1707 if (index >= ctx->Const.MaxDrawBuffers)
1708 goto invalid_value;
1709 if (!ctx->Extensions.EXT_draw_buffers2)
1710 goto invalid_enum;
1711 v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
1712 return TYPE_INT;
1713
1714 case GL_BLEND_SRC:
1715 /* fall-through */
1716 case GL_BLEND_SRC_RGB:
1717 if (index >= ctx->Const.MaxDrawBuffers)
1718 goto invalid_value;
1719 if (!ctx->Extensions.ARB_draw_buffers_blend)
1720 goto invalid_enum;
1721 v->value_int = ctx->Color.Blend[index].SrcRGB;
1722 return TYPE_INT;
1723 case GL_BLEND_SRC_ALPHA:
1724 if (index >= ctx->Const.MaxDrawBuffers)
1725 goto invalid_value;
1726 if (!ctx->Extensions.ARB_draw_buffers_blend)
1727 goto invalid_enum;
1728 v->value_int = ctx->Color.Blend[index].SrcA;
1729 return TYPE_INT;
1730 case GL_BLEND_DST:
1731 /* fall-through */
1732 case GL_BLEND_DST_RGB:
1733 if (index >= ctx->Const.MaxDrawBuffers)
1734 goto invalid_value;
1735 if (!ctx->Extensions.ARB_draw_buffers_blend)
1736 goto invalid_enum;
1737 v->value_int = ctx->Color.Blend[index].DstRGB;
1738 return TYPE_INT;
1739 case GL_BLEND_DST_ALPHA:
1740 if (index >= ctx->Const.MaxDrawBuffers)
1741 goto invalid_value;
1742 if (!ctx->Extensions.ARB_draw_buffers_blend)
1743 goto invalid_enum;
1744 v->value_int = ctx->Color.Blend[index].DstA;
1745 return TYPE_INT;
1746 case GL_BLEND_EQUATION_RGB:
1747 if (index >= ctx->Const.MaxDrawBuffers)
1748 goto invalid_value;
1749 if (!ctx->Extensions.ARB_draw_buffers_blend)
1750 goto invalid_enum;
1751 v->value_int = ctx->Color.Blend[index].EquationRGB;
1752 return TYPE_INT;
1753 case GL_BLEND_EQUATION_ALPHA:
1754 if (index >= ctx->Const.MaxDrawBuffers)
1755 goto invalid_value;
1756 if (!ctx->Extensions.ARB_draw_buffers_blend)
1757 goto invalid_enum;
1758 v->value_int = ctx->Color.Blend[index].EquationA;
1759 return TYPE_INT;
1760
1761 case GL_COLOR_WRITEMASK:
1762 if (index >= ctx->Const.MaxDrawBuffers)
1763 goto invalid_value;
1764 if (!ctx->Extensions.EXT_draw_buffers2)
1765 goto invalid_enum;
1766 v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
1767 v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
1768 v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
1769 v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
1770 return TYPE_INT_4;
1771
1772 case GL_SCISSOR_BOX:
1773 if (index >= ctx->Const.MaxViewports)
1774 goto invalid_value;
1775 v->value_int_4[0] = ctx->Scissor.ScissorArray[index].X;
1776 v->value_int_4[1] = ctx->Scissor.ScissorArray[index].Y;
1777 v->value_int_4[2] = ctx->Scissor.ScissorArray[index].Width;
1778 v->value_int_4[3] = ctx->Scissor.ScissorArray[index].Height;
1779 return TYPE_INT_4;
1780
1781 case GL_VIEWPORT:
1782 if (index >= ctx->Const.MaxViewports)
1783 goto invalid_value;
1784 v->value_float_4[0] = ctx->ViewportArray[index].X;
1785 v->value_float_4[1] = ctx->ViewportArray[index].Y;
1786 v->value_float_4[2] = ctx->ViewportArray[index].Width;
1787 v->value_float_4[3] = ctx->ViewportArray[index].Height;
1788 return TYPE_FLOAT_4;
1789
1790 case GL_DEPTH_RANGE:
1791 if (index >= ctx->Const.MaxViewports)
1792 goto invalid_value;
1793 v->value_double_2[0] = ctx->ViewportArray[index].Near;
1794 v->value_double_2[1] = ctx->ViewportArray[index].Far;
1795 return TYPE_DOUBLEN_2;
1796
1797 case GL_TRANSFORM_FEEDBACK_BUFFER_START:
1798 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1799 goto invalid_value;
1800 if (!ctx->Extensions.EXT_transform_feedback)
1801 goto invalid_enum;
1802 v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
1803 return TYPE_INT64;
1804
1805 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
1806 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1807 goto invalid_value;
1808 if (!ctx->Extensions.EXT_transform_feedback)
1809 goto invalid_enum;
1810 v->value_int64
1811 = ctx->TransformFeedback.CurrentObject->RequestedSize[index];
1812 return TYPE_INT64;
1813
1814 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
1815 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1816 goto invalid_value;
1817 if (!ctx->Extensions.EXT_transform_feedback)
1818 goto invalid_enum;
1819 v->value_int = ctx->TransformFeedback.CurrentObject->BufferNames[index];
1820 return TYPE_INT;
1821
1822 case GL_UNIFORM_BUFFER_BINDING:
1823 if (index >= ctx->Const.MaxUniformBufferBindings)
1824 goto invalid_value;
1825 if (!ctx->Extensions.ARB_uniform_buffer_object)
1826 goto invalid_enum;
1827 v->value_int = ctx->UniformBufferBindings[index].BufferObject->Name;
1828 return TYPE_INT;
1829
1830 case GL_UNIFORM_BUFFER_START:
1831 if (index >= ctx->Const.MaxUniformBufferBindings)
1832 goto invalid_value;
1833 if (!ctx->Extensions.ARB_uniform_buffer_object)
1834 goto invalid_enum;
1835 v->value_int = ctx->UniformBufferBindings[index].Offset;
1836 return TYPE_INT;
1837
1838 case GL_UNIFORM_BUFFER_SIZE:
1839 if (index >= ctx->Const.MaxUniformBufferBindings)
1840 goto invalid_value;
1841 if (!ctx->Extensions.ARB_uniform_buffer_object)
1842 goto invalid_enum;
1843 v->value_int = ctx->UniformBufferBindings[index].Size;
1844 return TYPE_INT;
1845
1846 /* ARB_texture_multisample / GL3.2 */
1847 case GL_SAMPLE_MASK_VALUE:
1848 if (index != 0)
1849 goto invalid_value;
1850 if (!ctx->Extensions.ARB_texture_multisample)
1851 goto invalid_enum;
1852 v->value_int = ctx->Multisample.SampleMaskValue;
1853 return TYPE_INT;
1854
1855 case GL_ATOMIC_COUNTER_BUFFER_BINDING:
1856 if (!ctx->Extensions.ARB_shader_atomic_counters)
1857 goto invalid_enum;
1858 if (index >= ctx->Const.MaxAtomicBufferBindings)
1859 goto invalid_value;
1860 v->value_int = ctx->AtomicBufferBindings[index].BufferObject->Name;
1861 return TYPE_INT;
1862
1863 case GL_ATOMIC_COUNTER_BUFFER_START:
1864 if (!ctx->Extensions.ARB_shader_atomic_counters)
1865 goto invalid_enum;
1866 if (index >= ctx->Const.MaxAtomicBufferBindings)
1867 goto invalid_value;
1868 v->value_int64 = ctx->AtomicBufferBindings[index].Offset;
1869 return TYPE_INT64;
1870
1871 case GL_ATOMIC_COUNTER_BUFFER_SIZE:
1872 if (!ctx->Extensions.ARB_shader_atomic_counters)
1873 goto invalid_enum;
1874 if (index >= ctx->Const.MaxAtomicBufferBindings)
1875 goto invalid_value;
1876 v->value_int64 = ctx->AtomicBufferBindings[index].Size;
1877 return TYPE_INT64;
1878
1879 case GL_VERTEX_BINDING_DIVISOR:
1880 if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_instanced_arrays)
1881 goto invalid_enum;
1882 if (index >= ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs)
1883 goto invalid_value;
1884 v->value_int = ctx->Array.VAO->VertexBinding[VERT_ATTRIB_GENERIC(index)].InstanceDivisor;
1885 return TYPE_INT;
1886
1887 case GL_VERTEX_BINDING_OFFSET:
1888 if (!_mesa_is_desktop_gl(ctx))
1889 goto invalid_enum;
1890 if (index >= ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs)
1891 goto invalid_value;
1892 v->value_int = ctx->Array.VAO->VertexBinding[VERT_ATTRIB_GENERIC(index)].Offset;
1893 return TYPE_INT;
1894
1895 case GL_VERTEX_BINDING_STRIDE:
1896 if (!_mesa_is_desktop_gl(ctx))
1897 goto invalid_enum;
1898 if (index >= ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs)
1899 goto invalid_value;
1900 v->value_int = ctx->Array.VAO->VertexBinding[VERT_ATTRIB_GENERIC(index)].Stride;
1901
1902 /* ARB_shader_image_load_store */
1903 case GL_IMAGE_BINDING_NAME: {
1904 struct gl_texture_object *t;
1905
1906 if (!ctx->Extensions.ARB_shader_image_load_store)
1907 goto invalid_enum;
1908 if (index >= ctx->Const.MaxImageUnits)
1909 goto invalid_value;
1910
1911 t = ctx->ImageUnits[index].TexObj;
1912 v->value_int = (t ? t->Name : 0);
1913 return TYPE_INT;
1914 }
1915
1916 case GL_IMAGE_BINDING_LEVEL:
1917 if (!ctx->Extensions.ARB_shader_image_load_store)
1918 goto invalid_enum;
1919 if (index >= ctx->Const.MaxImageUnits)
1920 goto invalid_value;
1921
1922 v->value_int = ctx->ImageUnits[index].Level;
1923 return TYPE_INT;
1924
1925 case GL_IMAGE_BINDING_LAYERED:
1926 if (!ctx->Extensions.ARB_shader_image_load_store)
1927 goto invalid_enum;
1928 if (index >= ctx->Const.MaxImageUnits)
1929 goto invalid_value;
1930
1931 v->value_int = ctx->ImageUnits[index].Layered;
1932 return TYPE_INT;
1933
1934 case GL_IMAGE_BINDING_LAYER:
1935 if (!ctx->Extensions.ARB_shader_image_load_store)
1936 goto invalid_enum;
1937 if (index >= ctx->Const.MaxImageUnits)
1938 goto invalid_value;
1939
1940 v->value_int = ctx->ImageUnits[index].Layer;
1941 return TYPE_INT;
1942
1943 case GL_IMAGE_BINDING_ACCESS:
1944 if (!ctx->Extensions.ARB_shader_image_load_store)
1945 goto invalid_enum;
1946 if (index >= ctx->Const.MaxImageUnits)
1947 goto invalid_value;
1948
1949 v->value_int = ctx->ImageUnits[index].Access;
1950 return TYPE_INT;
1951
1952 case GL_IMAGE_BINDING_FORMAT:
1953 if (!ctx->Extensions.ARB_shader_image_load_store)
1954 goto invalid_enum;
1955 if (index >= ctx->Const.MaxImageUnits)
1956 goto invalid_value;
1957
1958 v->value_int = ctx->ImageUnits[index].Format;
1959 return TYPE_INT;
1960
1961 case GL_MAX_COMPUTE_WORK_GROUP_COUNT:
1962 if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_compute_shader)
1963 goto invalid_enum;
1964 if (index >= 3)
1965 goto invalid_value;
1966 v->value_int = ctx->Const.MaxComputeWorkGroupCount[index];
1967 return TYPE_INT;
1968
1969 case GL_MAX_COMPUTE_WORK_GROUP_SIZE:
1970 if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_compute_shader)
1971 goto invalid_enum;
1972 if (index >= 3)
1973 goto invalid_value;
1974 v->value_int = ctx->Const.MaxComputeWorkGroupSize[index];
1975 return TYPE_INT;
1976 }
1977
1978 invalid_enum:
1979 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1980 _mesa_lookup_enum_by_nr(pname));
1981 return TYPE_INVALID;
1982 invalid_value:
1983 _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
1984 _mesa_lookup_enum_by_nr(pname));
1985 return TYPE_INVALID;
1986 }
1987
1988 void GLAPIENTRY
1989 _mesa_GetBooleani_v( GLenum pname, GLuint index, GLboolean *params )
1990 {
1991 union value v;
1992 enum value_type type =
1993 find_value_indexed("glGetBooleani_v", pname, index, &v);
1994
1995 switch (type) {
1996 case TYPE_INT:
1997 params[0] = INT_TO_BOOLEAN(v.value_int);
1998 break;
1999 case TYPE_INT_4:
2000 params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
2001 params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
2002 params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
2003 params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
2004 break;
2005 case TYPE_INT64:
2006 params[0] = INT64_TO_BOOLEAN(v.value_int64);
2007 break;
2008 default:
2009 ; /* nothing - GL error was recorded */
2010 }
2011 }
2012
2013 void GLAPIENTRY
2014 _mesa_GetIntegeri_v( GLenum pname, GLuint index, GLint *params )
2015 {
2016 union value v;
2017 enum value_type type =
2018 find_value_indexed("glGetIntegeri_v", pname, index, &v);
2019
2020 switch (type) {
2021 case TYPE_FLOAT_4:
2022 case TYPE_FLOATN_4:
2023 params[3] = IROUND(v.value_float_4[3]);
2024 case TYPE_FLOAT_3:
2025 case TYPE_FLOATN_3:
2026 params[2] = IROUND(v.value_float_4[2]);
2027 case TYPE_FLOAT_2:
2028 case TYPE_FLOATN_2:
2029 params[1] = IROUND(v.value_float_4[1]);
2030 case TYPE_FLOAT:
2031 case TYPE_FLOATN:
2032 params[0] = IROUND(v.value_float_4[0]);
2033 break;
2034
2035 case TYPE_DOUBLEN_2:
2036 params[1] = IROUND(v.value_double_2[1]);
2037 case TYPE_DOUBLEN:
2038 params[0] = IROUND(v.value_double_2[0]);
2039 break;
2040
2041 case TYPE_INT:
2042 params[0] = v.value_int;
2043 break;
2044 case TYPE_INT_4:
2045 params[0] = v.value_int_4[0];
2046 params[1] = v.value_int_4[1];
2047 params[2] = v.value_int_4[2];
2048 params[3] = v.value_int_4[3];
2049 break;
2050 case TYPE_INT64:
2051 params[0] = INT64_TO_INT(v.value_int64);
2052 break;
2053 default:
2054 ; /* nothing - GL error was recorded */
2055 }
2056 }
2057
2058 void GLAPIENTRY
2059 _mesa_GetInteger64i_v( GLenum pname, GLuint index, GLint64 *params )
2060 {
2061 union value v;
2062 enum value_type type =
2063 find_value_indexed("glGetInteger64i_v", pname, index, &v);
2064
2065 switch (type) {
2066 case TYPE_INT:
2067 params[0] = v.value_int;
2068 break;
2069 case TYPE_INT_4:
2070 params[0] = v.value_int_4[0];
2071 params[1] = v.value_int_4[1];
2072 params[2] = v.value_int_4[2];
2073 params[3] = v.value_int_4[3];
2074 break;
2075 case TYPE_INT64:
2076 params[0] = v.value_int64;
2077 break;
2078 default:
2079 ; /* nothing - GL error was recorded */
2080 }
2081 }
2082
2083 void GLAPIENTRY
2084 _mesa_GetFloati_v(GLenum pname, GLuint index, GLfloat *params)
2085 {
2086 int i;
2087 GLmatrix *m;
2088 union value v;
2089 enum value_type type =
2090 find_value_indexed("glGetFloati_v", pname, index, &v);
2091
2092 switch (type) {
2093 case TYPE_FLOAT_4:
2094 case TYPE_FLOATN_4:
2095 params[3] = v.value_float_4[3];
2096 case TYPE_FLOAT_3:
2097 case TYPE_FLOATN_3:
2098 params[2] = v.value_float_4[2];
2099 case TYPE_FLOAT_2:
2100 case TYPE_FLOATN_2:
2101 params[1] = v.value_float_4[1];
2102 case TYPE_FLOAT:
2103 case TYPE_FLOATN:
2104 params[0] = v.value_float_4[0];
2105 break;
2106
2107 case TYPE_DOUBLEN_2:
2108 params[1] = (GLfloat) v.value_double_2[1];
2109 case TYPE_DOUBLEN:
2110 params[0] = (GLfloat) v.value_double_2[0];
2111 break;
2112
2113 case TYPE_INT_4:
2114 params[3] = (GLfloat) v.value_int_4[3];
2115 case TYPE_INT_3:
2116 params[2] = (GLfloat) v.value_int_4[2];
2117 case TYPE_INT_2:
2118 case TYPE_ENUM_2:
2119 params[1] = (GLfloat) v.value_int_4[1];
2120 case TYPE_INT:
2121 case TYPE_ENUM:
2122 params[0] = (GLfloat) v.value_int_4[0];
2123 break;
2124
2125 case TYPE_INT_N:
2126 for (i = 0; i < v.value_int_n.n; i++)
2127 params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
2128 break;
2129
2130 case TYPE_INT64:
2131 params[0] = (GLfloat) v.value_int64;
2132 break;
2133
2134 case TYPE_BOOLEAN:
2135 params[0] = BOOLEAN_TO_FLOAT(v.value_bool);
2136 break;
2137
2138 case TYPE_MATRIX:
2139 m = *(GLmatrix **) &v;
2140 for (i = 0; i < 16; i++)
2141 params[i] = m->m[i];
2142 break;
2143
2144 case TYPE_MATRIX_T:
2145 m = *(GLmatrix **) &v;
2146 for (i = 0; i < 16; i++)
2147 params[i] = m->m[transpose[i]];
2148 break;
2149
2150 default:
2151 ;
2152 }
2153 }
2154
2155 void GLAPIENTRY
2156 _mesa_GetDoublei_v(GLenum pname, GLuint index, GLdouble *params)
2157 {
2158 int i;
2159 GLmatrix *m;
2160 union value v;
2161 enum value_type type =
2162 find_value_indexed("glGetDoublei_v", pname, index, &v);
2163
2164 switch (type) {
2165 case TYPE_FLOAT_4:
2166 case TYPE_FLOATN_4:
2167 params[3] = (GLdouble) v.value_float_4[3];
2168 case TYPE_FLOAT_3:
2169 case TYPE_FLOATN_3:
2170 params[2] = (GLdouble) v.value_float_4[2];
2171 case TYPE_FLOAT_2:
2172 case TYPE_FLOATN_2:
2173 params[1] = (GLdouble) v.value_float_4[1];
2174 case TYPE_FLOAT:
2175 case TYPE_FLOATN:
2176 params[0] = (GLdouble) v.value_float_4[0];
2177 break;
2178
2179 case TYPE_DOUBLEN_2:
2180 params[1] = v.value_double_2[1];
2181 case TYPE_DOUBLEN:
2182 params[0] = v.value_double_2[0];
2183 break;
2184
2185 case TYPE_INT_4:
2186 params[3] = (GLdouble) v.value_int_4[3];
2187 case TYPE_INT_3:
2188 params[2] = (GLdouble) v.value_int_4[2];
2189 case TYPE_INT_2:
2190 case TYPE_ENUM_2:
2191 params[1] = (GLdouble) v.value_int_4[1];
2192 case TYPE_INT:
2193 case TYPE_ENUM:
2194 params[0] = (GLdouble) v.value_int_4[0];
2195 break;
2196
2197 case TYPE_INT_N:
2198 for (i = 0; i < v.value_int_n.n; i++)
2199 params[i] = (GLdouble) INT_TO_FLOAT(v.value_int_n.ints[i]);
2200 break;
2201
2202 case TYPE_INT64:
2203 params[0] = (GLdouble) v.value_int64;
2204 break;
2205
2206 case TYPE_BOOLEAN:
2207 params[0] = (GLdouble) BOOLEAN_TO_FLOAT(v.value_bool);
2208 break;
2209
2210 case TYPE_MATRIX:
2211 m = *(GLmatrix **) &v;
2212 for (i = 0; i < 16; i++)
2213 params[i] = (GLdouble) m->m[i];
2214 break;
2215
2216 case TYPE_MATRIX_T:
2217 m = *(GLmatrix **) &v;
2218 for (i = 0; i < 16; i++)
2219 params[i] = (GLdouble) m->m[transpose[i]];
2220 break;
2221
2222 default:
2223 ;
2224 }
2225 }
2226
2227 void GLAPIENTRY
2228 _mesa_GetFixedv(GLenum pname, GLfixed *params)
2229 {
2230 const struct value_desc *d;
2231 union value v;
2232 GLmatrix *m;
2233 int shift, i;
2234 void *p;
2235
2236 d = find_value("glGetDoublev", pname, &p, &v);
2237 switch (d->type) {
2238 case TYPE_INVALID:
2239 break;
2240 case TYPE_CONST:
2241 params[0] = INT_TO_FIXED(d->offset);
2242 break;
2243
2244 case TYPE_FLOAT_4:
2245 case TYPE_FLOATN_4:
2246 params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
2247 case TYPE_FLOAT_3:
2248 case TYPE_FLOATN_3:
2249 params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
2250 case TYPE_FLOAT_2:
2251 case TYPE_FLOATN_2:
2252 params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
2253 case TYPE_FLOAT:
2254 case TYPE_FLOATN:
2255 params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
2256 break;
2257
2258 case TYPE_DOUBLEN_2:
2259 params[1] = FLOAT_TO_FIXED(((GLdouble *) p)[1]);
2260 case TYPE_DOUBLEN:
2261 params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
2262 break;
2263
2264 case TYPE_INT_4:
2265 params[3] = INT_TO_FIXED(((GLint *) p)[3]);
2266 case TYPE_INT_3:
2267 params[2] = INT_TO_FIXED(((GLint *) p)[2]);
2268 case TYPE_INT_2:
2269 case TYPE_ENUM_2:
2270 params[1] = INT_TO_FIXED(((GLint *) p)[1]);
2271 case TYPE_INT:
2272 case TYPE_ENUM:
2273 params[0] = INT_TO_FIXED(((GLint *) p)[0]);
2274 break;
2275
2276 case TYPE_INT_N:
2277 for (i = 0; i < v.value_int_n.n; i++)
2278 params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
2279 break;
2280
2281 case TYPE_INT64:
2282 params[0] = ((GLint64 *) p)[0];
2283 break;
2284
2285 case TYPE_BOOLEAN:
2286 params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
2287 break;
2288
2289 case TYPE_MATRIX:
2290 m = *(GLmatrix **) p;
2291 for (i = 0; i < 16; i++)
2292 params[i] = FLOAT_TO_FIXED(m->m[i]);
2293 break;
2294
2295 case TYPE_MATRIX_T:
2296 m = *(GLmatrix **) p;
2297 for (i = 0; i < 16; i++)
2298 params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
2299 break;
2300
2301 case TYPE_BIT_0:
2302 case TYPE_BIT_1:
2303 case TYPE_BIT_2:
2304 case TYPE_BIT_3:
2305 case TYPE_BIT_4:
2306 case TYPE_BIT_5:
2307 case TYPE_BIT_6:
2308 case TYPE_BIT_7:
2309 shift = d->type - TYPE_BIT_0;
2310 params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);
2311 break;
2312 }
2313 }