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mesa/sso: Implement GL_PROGRAM_PIPELINE_BINDING for glGet
[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_separate_shader_objects);
391 EXTRA_EXT(ARB_shader_atomic_counters);
392 EXTRA_EXT(ARB_draw_indirect);
393 EXTRA_EXT(ARB_shader_image_load_store);
394 EXTRA_EXT(ARB_viewport_array);
395 EXTRA_EXT(ARB_compute_shader);
396 EXTRA_EXT(ARB_gpu_shader5);
397 EXTRA_EXT2(ARB_transform_feedback3, ARB_gpu_shader5);
398
399 static const int
400 extra_ARB_color_buffer_float_or_glcore[] = {
401 EXT(ARB_color_buffer_float),
402 EXTRA_API_GL_CORE,
403 EXTRA_END
404 };
405
406 static const int
407 extra_NV_primitive_restart[] = {
408 EXT(NV_primitive_restart),
409 EXTRA_END
410 };
411
412 static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };
413 static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };
414 static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };
415 static const int extra_version_40[] = { EXTRA_VERSION_40, EXTRA_END };
416
417 static const int extra_gl30_es3[] = {
418 EXTRA_VERSION_30,
419 EXTRA_API_ES3,
420 EXTRA_END,
421 };
422
423 static const int extra_gl32_es3[] = {
424 EXTRA_VERSION_32,
425 EXTRA_API_ES3,
426 EXTRA_END,
427 };
428
429 static const int extra_gl32_ARB_geometry_shader4[] = {
430 EXTRA_VERSION_32,
431 EXT(ARB_geometry_shader4),
432 EXTRA_END
433 };
434
435 static const int extra_gl40_ARB_sample_shading[] = {
436 EXTRA_VERSION_40,
437 EXT(ARB_sample_shading),
438 EXTRA_END
439 };
440
441 static const int
442 extra_ARB_vertex_program_api_es2[] = {
443 EXT(ARB_vertex_program),
444 EXTRA_API_ES2,
445 EXTRA_END
446 };
447
448 /* The ReadBuffer get token is valid under either full GL or under
449 * GLES2 if the NV_read_buffer extension is available. */
450 static const int
451 extra_NV_read_buffer_api_gl[] = {
452 EXTRA_API_ES2,
453 EXTRA_API_GL,
454 EXTRA_END
455 };
456
457 static const int extra_core_ARB_color_buffer_float_and_new_buffers[] = {
458 EXTRA_API_GL_CORE,
459 EXT(ARB_color_buffer_float),
460 EXTRA_NEW_BUFFERS,
461 EXTRA_END
462 };
463
464 /* This is the big table describing all the enums we accept in
465 * glGet*v(). The table is partitioned into six parts: enums
466 * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
467 * between OpenGL and GLES, enums exclusive to GLES, etc for the
468 * remaining combinations. To look up the enums valid in a given API
469 * we will use a hash table specific to that API. These tables are in
470 * turn generated at build time and included through get_hash.h.
471 */
472
473 #include "get_hash.h"
474
475 /* All we need now is a way to look up the value struct from the enum.
476 * The code generated by gcc for the old generated big switch
477 * statement is a big, balanced, open coded if/else tree, essentially
478 * an unrolled binary search. It would be natural to sort the new
479 * enum table and use bsearch(), but we will use a read-only hash
480 * table instead. bsearch() has a nice guaranteed worst case
481 * performance, but we're also guaranteed to hit that worst case
482 * (log2(n) iterations) for about half the enums. Instead, using an
483 * open addressing hash table, we can find the enum on the first try
484 * for 80% of the enums, 1 collision for 10% and never more than 5
485 * collisions for any enum (typical numbers). And the code is very
486 * simple, even though it feels a little magic. */
487
488 #ifdef GET_DEBUG
489 static void
490 print_table_stats(int api)
491 {
492 int i, j, collisions[11], count, hash, mask;
493 const struct value_desc *d;
494 const char *api_names[] = {
495 [API_OPENGL_COMPAT] = "GL",
496 [API_OPENGL_CORE] = "GL_CORE",
497 [API_OPENGLES] = "GLES",
498 [API_OPENGLES2] = "GLES2",
499 };
500 const char *api_name;
501
502 api_name = api < Elements(api_names) ? api_names[api] : "N/A";
503 count = 0;
504 mask = Elements(table(api)) - 1;
505 memset(collisions, 0, sizeof collisions);
506
507 for (i = 0; i < Elements(table(api)); i++) {
508 if (!table(api)[i])
509 continue;
510 count++;
511 d = &values[table(api)[i]];
512 hash = (d->pname * prime_factor);
513 j = 0;
514 while (1) {
515 if (values[table(api)[hash & mask]].pname == d->pname)
516 break;
517 hash += prime_step;
518 j++;
519 }
520
521 if (j < 10)
522 collisions[j]++;
523 else
524 collisions[10]++;
525 }
526
527 printf("number of enums for %s: %d (total %ld)\n",
528 api_name, count, Elements(values));
529 for (i = 0; i < Elements(collisions) - 1; i++)
530 if (collisions[i] > 0)
531 printf(" %d enums with %d %scollisions\n",
532 collisions[i], i, i == 10 ? "or more " : "");
533 }
534 #endif
535
536 /**
537 * Initialize the enum hash for a given API
538 *
539 * This is called from one_time_init() to insert the enum values that
540 * are valid for the API in question into the enum hash table.
541 *
542 * \param the current context, for determining the API in question
543 */
544 void _mesa_init_get_hash(struct gl_context *ctx)
545 {
546 #ifdef GET_DEBUG
547 print_table_stats(ctx->API);
548 #else
549 (void) ctx;
550 #endif
551 }
552
553 /**
554 * Handle irregular enums
555 *
556 * Some values don't conform to the "well-known type at context
557 * pointer + offset" pattern, so we have this function to catch all
558 * the corner cases. Typically, it's a computed value or a one-off
559 * pointer to a custom struct or something.
560 *
561 * In this case we can't return a pointer to the value, so we'll have
562 * to use the temporary variable 'v' declared back in the calling
563 * glGet*v() function to store the result.
564 *
565 * \param ctx the current context
566 * \param d the struct value_desc that describes the enum
567 * \param v pointer to the tmp declared in the calling glGet*v() function
568 */
569 static void
570 find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
571 {
572 struct gl_buffer_object **buffer_obj;
573 struct gl_vertex_attrib_array *array;
574 GLuint unit, *p;
575
576 switch (d->pname) {
577 case GL_MAJOR_VERSION:
578 v->value_int = ctx->Version / 10;
579 break;
580 case GL_MINOR_VERSION:
581 v->value_int = ctx->Version % 10;
582 break;
583
584 case GL_TEXTURE_1D:
585 case GL_TEXTURE_2D:
586 case GL_TEXTURE_3D:
587 case GL_TEXTURE_CUBE_MAP_ARB:
588 case GL_TEXTURE_RECTANGLE_NV:
589 case GL_TEXTURE_EXTERNAL_OES:
590 v->value_bool = _mesa_IsEnabled(d->pname);
591 break;
592
593 case GL_LINE_STIPPLE_PATTERN:
594 /* This is the only GLushort, special case it here by promoting
595 * to an int rather than introducing a new type. */
596 v->value_int = ctx->Line.StipplePattern;
597 break;
598
599 case GL_CURRENT_RASTER_TEXTURE_COORDS:
600 unit = ctx->Texture.CurrentUnit;
601 v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
602 v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
603 v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
604 v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
605 break;
606
607 case GL_CURRENT_TEXTURE_COORDS:
608 unit = ctx->Texture.CurrentUnit;
609 v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
610 v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
611 v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
612 v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
613 break;
614
615 case GL_COLOR_WRITEMASK:
616 v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
617 v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
618 v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
619 v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
620 break;
621
622 case GL_EDGE_FLAG:
623 v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
624 break;
625
626 case GL_READ_BUFFER:
627 v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
628 break;
629
630 case GL_MAP2_GRID_DOMAIN:
631 v->value_float_4[0] = ctx->Eval.MapGrid2u1;
632 v->value_float_4[1] = ctx->Eval.MapGrid2u2;
633 v->value_float_4[2] = ctx->Eval.MapGrid2v1;
634 v->value_float_4[3] = ctx->Eval.MapGrid2v2;
635 break;
636
637 case GL_TEXTURE_STACK_DEPTH:
638 unit = ctx->Texture.CurrentUnit;
639 v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
640 break;
641 case GL_TEXTURE_MATRIX:
642 unit = ctx->Texture.CurrentUnit;
643 v->value_matrix = ctx->TextureMatrixStack[unit].Top;
644 break;
645
646 case GL_TEXTURE_COORD_ARRAY:
647 case GL_TEXTURE_COORD_ARRAY_SIZE:
648 case GL_TEXTURE_COORD_ARRAY_TYPE:
649 case GL_TEXTURE_COORD_ARRAY_STRIDE:
650 array = &ctx->Array.VAO->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)];
651 v->value_int = *(GLuint *) ((char *) array + d->offset);
652 break;
653
654 case GL_ACTIVE_TEXTURE_ARB:
655 v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
656 break;
657 case GL_CLIENT_ACTIVE_TEXTURE_ARB:
658 v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
659 break;
660
661 case GL_MODELVIEW_STACK_DEPTH:
662 case GL_PROJECTION_STACK_DEPTH:
663 v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
664 break;
665
666 case GL_MAX_TEXTURE_SIZE:
667 case GL_MAX_3D_TEXTURE_SIZE:
668 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
669 p = (GLuint *) ((char *) ctx + d->offset);
670 v->value_int = 1 << (*p - 1);
671 break;
672
673 case GL_SCISSOR_BOX:
674 v->value_int_4[0] = ctx->Scissor.ScissorArray[0].X;
675 v->value_int_4[1] = ctx->Scissor.ScissorArray[0].Y;
676 v->value_int_4[2] = ctx->Scissor.ScissorArray[0].Width;
677 v->value_int_4[3] = ctx->Scissor.ScissorArray[0].Height;
678 break;
679
680 case GL_SCISSOR_TEST:
681 v->value_bool = ctx->Scissor.EnableFlags & 1;
682 break;
683
684 case GL_LIST_INDEX:
685 v->value_int =
686 ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
687 break;
688 case GL_LIST_MODE:
689 if (!ctx->CompileFlag)
690 v->value_enum = 0;
691 else if (ctx->ExecuteFlag)
692 v->value_enum = GL_COMPILE_AND_EXECUTE;
693 else
694 v->value_enum = GL_COMPILE;
695 break;
696
697 case GL_VIEWPORT:
698 v->value_float_4[0] = ctx->ViewportArray[0].X;
699 v->value_float_4[1] = ctx->ViewportArray[0].Y;
700 v->value_float_4[2] = ctx->ViewportArray[0].Width;
701 v->value_float_4[3] = ctx->ViewportArray[0].Height;
702 break;
703
704 case GL_DEPTH_RANGE:
705 v->value_double_2[0] = ctx->ViewportArray[0].Near;
706 v->value_double_2[1] = ctx->ViewportArray[0].Far;
707 break;
708
709 case GL_ACTIVE_STENCIL_FACE_EXT:
710 v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
711 break;
712
713 case GL_STENCIL_FAIL:
714 v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
715 break;
716 case GL_STENCIL_FUNC:
717 v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
718 break;
719 case GL_STENCIL_PASS_DEPTH_FAIL:
720 v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
721 break;
722 case GL_STENCIL_PASS_DEPTH_PASS:
723 v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
724 break;
725 case GL_STENCIL_REF:
726 v->value_int = _mesa_get_stencil_ref(ctx, ctx->Stencil.ActiveFace);
727 break;
728 case GL_STENCIL_BACK_REF:
729 v->value_int = _mesa_get_stencil_ref(ctx, 1);
730 break;
731 case GL_STENCIL_VALUE_MASK:
732 v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
733 break;
734 case GL_STENCIL_WRITEMASK:
735 v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
736 break;
737
738 case GL_NUM_EXTENSIONS:
739 v->value_int = _mesa_get_extension_count(ctx);
740 break;
741
742 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
743 v->value_int = _mesa_get_color_read_type(ctx);
744 break;
745 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
746 v->value_int = _mesa_get_color_read_format(ctx);
747 break;
748
749 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
750 v->value_int = ctx->CurrentStack->Depth + 1;
751 break;
752 case GL_CURRENT_MATRIX_ARB:
753 case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
754 v->value_matrix = ctx->CurrentStack->Top;
755 break;
756
757 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
758 v->value_int = _mesa_get_compressed_formats(ctx, NULL);
759 break;
760 case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
761 v->value_int_n.n =
762 _mesa_get_compressed_formats(ctx, v->value_int_n.ints);
763 ASSERT(v->value_int_n.n <= (int) ARRAY_SIZE(v->value_int_n.ints));
764 break;
765
766 case GL_MAX_VARYING_FLOATS_ARB:
767 v->value_int = ctx->Const.MaxVarying * 4;
768 break;
769
770 /* Various object names */
771
772 case GL_TEXTURE_BINDING_1D:
773 case GL_TEXTURE_BINDING_2D:
774 case GL_TEXTURE_BINDING_3D:
775 case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
776 case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
777 case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
778 case GL_TEXTURE_BINDING_RECTANGLE_NV:
779 case GL_TEXTURE_BINDING_EXTERNAL_OES:
780 case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY:
781 case GL_TEXTURE_BINDING_2D_MULTISAMPLE:
782 case GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY:
783 unit = ctx->Texture.CurrentUnit;
784 v->value_int =
785 ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
786 break;
787
788 /* GL_EXT_packed_float */
789 case GL_RGBA_SIGNED_COMPONENTS_EXT:
790 {
791 /* Note: we only check the 0th color attachment. */
792 const struct gl_renderbuffer *rb =
793 ctx->DrawBuffer->_ColorDrawBuffers[0];
794 if (rb && _mesa_is_format_signed(rb->Format)) {
795 /* Issue 17 of GL_EXT_packed_float: If a component (such as
796 * alpha) has zero bits, the component should not be considered
797 * signed and so the bit for the respective component should be
798 * zeroed.
799 */
800 GLint r_bits =
801 _mesa_get_format_bits(rb->Format, GL_RED_BITS);
802 GLint g_bits =
803 _mesa_get_format_bits(rb->Format, GL_GREEN_BITS);
804 GLint b_bits =
805 _mesa_get_format_bits(rb->Format, GL_BLUE_BITS);
806 GLint a_bits =
807 _mesa_get_format_bits(rb->Format, GL_ALPHA_BITS);
808 GLint l_bits =
809 _mesa_get_format_bits(rb->Format, GL_TEXTURE_LUMINANCE_SIZE);
810 GLint i_bits =
811 _mesa_get_format_bits(rb->Format, GL_TEXTURE_INTENSITY_SIZE);
812
813 v->value_int_4[0] = r_bits + l_bits + i_bits > 0;
814 v->value_int_4[1] = g_bits + l_bits + i_bits > 0;
815 v->value_int_4[2] = b_bits + l_bits + i_bits > 0;
816 v->value_int_4[3] = a_bits + i_bits > 0;
817 }
818 else {
819 v->value_int_4[0] =
820 v->value_int_4[1] =
821 v->value_int_4[2] =
822 v->value_int_4[3] = 0;
823 }
824 }
825 break;
826
827 /* GL_ARB_vertex_buffer_object */
828 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
829 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
830 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
831 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
832 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
833 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
834 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
835 buffer_obj = (struct gl_buffer_object **)
836 ((char *) ctx->Array.VAO + d->offset);
837 v->value_int = (*buffer_obj)->Name;
838 break;
839 case GL_ARRAY_BUFFER_BINDING_ARB:
840 v->value_int = ctx->Array.ArrayBufferObj->Name;
841 break;
842 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
843 v->value_int =
844 ctx->Array.VAO->VertexBinding[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj->Name;
845 break;
846 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
847 v->value_int = ctx->Array.VAO->IndexBufferObj->Name;
848 break;
849
850 /* ARB_copy_buffer */
851 case GL_COPY_READ_BUFFER:
852 v->value_int = ctx->CopyReadBuffer->Name;
853 break;
854 case GL_COPY_WRITE_BUFFER:
855 v->value_int = ctx->CopyWriteBuffer->Name;
856 break;
857
858 case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
859 v->value_int = ctx->Pack.BufferObj->Name;
860 break;
861 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
862 v->value_int = ctx->Unpack.BufferObj->Name;
863 break;
864 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
865 v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
866 break;
867 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
868 v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
869 break;
870 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
871 v->value_int = ctx->TransformFeedback.CurrentObject->Active;
872 break;
873 case GL_TRANSFORM_FEEDBACK_BINDING:
874 v->value_int = ctx->TransformFeedback.CurrentObject->Name;
875 break;
876 case GL_CURRENT_PROGRAM:
877 /* The Changelog of the ARB_separate_shader_objects spec says:
878 *
879 * 24 25 Jul 2011 pbrown Remove the language erroneously deleting
880 * CURRENT_PROGRAM. In the EXT extension, this
881 * token was aliased to ACTIVE_PROGRAM_EXT, and
882 * was used to indicate the last program set by
883 * either ActiveProgramEXT or UseProgram. In
884 * the ARB extension, the SSO active programs
885 * are now program pipeline object state and
886 * CURRENT_PROGRAM should still be used to query
887 * the last program set by UseProgram (bug 7822).
888 */
889 v->value_int =
890 ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
891 break;
892 case GL_READ_FRAMEBUFFER_BINDING_EXT:
893 v->value_int = ctx->ReadBuffer->Name;
894 break;
895 case GL_RENDERBUFFER_BINDING_EXT:
896 v->value_int =
897 ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
898 break;
899 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
900 v->value_int = ctx->Array.VAO->VertexBinding[VERT_ATTRIB_POINT_SIZE].BufferObj->Name;
901 break;
902
903 case GL_FOG_COLOR:
904 if (_mesa_get_clamp_fragment_color(ctx))
905 COPY_4FV(v->value_float_4, ctx->Fog.Color);
906 else
907 COPY_4FV(v->value_float_4, ctx->Fog.ColorUnclamped);
908 break;
909 case GL_COLOR_CLEAR_VALUE:
910 if (_mesa_get_clamp_fragment_color(ctx)) {
911 v->value_float_4[0] = CLAMP(ctx->Color.ClearColor.f[0], 0.0F, 1.0F);
912 v->value_float_4[1] = CLAMP(ctx->Color.ClearColor.f[1], 0.0F, 1.0F);
913 v->value_float_4[2] = CLAMP(ctx->Color.ClearColor.f[2], 0.0F, 1.0F);
914 v->value_float_4[3] = CLAMP(ctx->Color.ClearColor.f[3], 0.0F, 1.0F);
915 } else
916 COPY_4FV(v->value_float_4, ctx->Color.ClearColor.f);
917 break;
918 case GL_BLEND_COLOR_EXT:
919 if (_mesa_get_clamp_fragment_color(ctx))
920 COPY_4FV(v->value_float_4, ctx->Color.BlendColor);
921 else
922 COPY_4FV(v->value_float_4, ctx->Color.BlendColorUnclamped);
923 break;
924 case GL_ALPHA_TEST_REF:
925 if (_mesa_get_clamp_fragment_color(ctx))
926 v->value_float = ctx->Color.AlphaRef;
927 else
928 v->value_float = ctx->Color.AlphaRefUnclamped;
929 break;
930 case GL_MAX_VERTEX_UNIFORM_VECTORS:
931 v->value_int = ctx->Const.Program[MESA_SHADER_VERTEX].MaxUniformComponents / 4;
932 break;
933
934 case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
935 v->value_int = ctx->Const.Program[MESA_SHADER_FRAGMENT].MaxUniformComponents / 4;
936 break;
937
938 /* GL_ARB_texture_buffer_object */
939 case GL_TEXTURE_BUFFER_ARB:
940 v->value_int = ctx->Texture.BufferObject->Name;
941 break;
942 case GL_TEXTURE_BINDING_BUFFER_ARB:
943 unit = ctx->Texture.CurrentUnit;
944 v->value_int =
945 ctx->Texture.Unit[unit].CurrentTex[TEXTURE_BUFFER_INDEX]->Name;
946 break;
947 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB:
948 {
949 struct gl_buffer_object *buf =
950 ctx->Texture.Unit[ctx->Texture.CurrentUnit]
951 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObject;
952 v->value_int = buf ? buf->Name : 0;
953 }
954 break;
955 case GL_TEXTURE_BUFFER_FORMAT_ARB:
956 v->value_int = ctx->Texture.Unit[ctx->Texture.CurrentUnit]
957 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObjectFormat;
958 break;
959
960 /* GL_ARB_sampler_objects */
961 case GL_SAMPLER_BINDING:
962 {
963 struct gl_sampler_object *samp =
964 ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler;
965
966 /*
967 * The sampler object may have been deleted on another context,
968 * so we try to lookup the sampler object before returning its Name.
969 */
970 if (samp && _mesa_lookup_samplerobj(ctx, samp->Name)) {
971 v->value_int = samp->Name;
972 } else {
973 v->value_int = 0;
974 }
975 }
976 break;
977 /* GL_ARB_uniform_buffer_object */
978 case GL_UNIFORM_BUFFER_BINDING:
979 v->value_int = ctx->UniformBuffer->Name;
980 break;
981 /* GL_ARB_timer_query */
982 case GL_TIMESTAMP:
983 if (ctx->Driver.GetTimestamp) {
984 v->value_int64 = ctx->Driver.GetTimestamp(ctx);
985 }
986 else {
987 _mesa_problem(ctx, "driver doesn't implement GetTimestamp");
988 }
989 break;
990 /* GL_KHR_DEBUG */
991 case GL_DEBUG_LOGGED_MESSAGES:
992 {
993 struct gl_debug_state *debug = _mesa_get_debug_state(ctx);
994 v->value_int = debug ? debug->NumMessages : 0;
995 }
996 break;
997 case GL_DEBUG_NEXT_LOGGED_MESSAGE_LENGTH:
998 {
999 struct gl_debug_state *debug = _mesa_get_debug_state(ctx);
1000 v->value_int = debug ? debug->NextMsgLength : 0;
1001 }
1002 break;
1003 case GL_DEBUG_GROUP_STACK_DEPTH:
1004 {
1005 struct gl_debug_state *debug = _mesa_get_debug_state(ctx);
1006 v->value_int = debug ? debug->GroupStackDepth : 0;
1007 }
1008 break;
1009
1010 /* GL_ARB_shader_atomic_counters */
1011 case GL_ATOMIC_COUNTER_BUFFER_BINDING:
1012 v->value_int = ctx->AtomicBuffer->Name;
1013 break;
1014 /* GL_ARB_draw_indirect */
1015 case GL_DRAW_INDIRECT_BUFFER_BINDING:
1016 v->value_int = ctx->DrawIndirectBuffer->Name;
1017 break;
1018 /* GL_ARB_separate_shader_objects */
1019 case GL_PROGRAM_PIPELINE_BINDING:
1020 if (ctx->Pipeline.Current) {
1021 v->value_int = ctx->Pipeline.Current->Name;
1022 } else {
1023 v->value_int = 0;
1024 }
1025 break;
1026 }
1027 }
1028
1029 /**
1030 * Check extra constraints on a struct value_desc descriptor
1031 *
1032 * If a struct value_desc has a non-NULL extra pointer, it means that
1033 * there are a number of extra constraints to check or actions to
1034 * perform. The extras is just an integer array where each integer
1035 * encode different constraints or actions.
1036 *
1037 * \param ctx current context
1038 * \param func name of calling glGet*v() function for error reporting
1039 * \param d the struct value_desc that has the extra constraints
1040 *
1041 * \return GL_FALSE if all of the constraints were not satisfied,
1042 * otherwise GL_TRUE.
1043 */
1044 static GLboolean
1045 check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
1046 {
1047 const GLuint version = ctx->Version;
1048 GLboolean api_check = GL_FALSE;
1049 GLboolean api_found = GL_FALSE;
1050 const int *e;
1051
1052 for (e = d->extra; *e != EXTRA_END; e++) {
1053 switch (*e) {
1054 case EXTRA_VERSION_30:
1055 api_check = GL_TRUE;
1056 if (version >= 30)
1057 api_found = GL_TRUE;
1058 break;
1059 case EXTRA_VERSION_31:
1060 api_check = GL_TRUE;
1061 if (version >= 31)
1062 api_found = GL_TRUE;
1063 break;
1064 case EXTRA_VERSION_32:
1065 api_check = GL_TRUE;
1066 if (version >= 32)
1067 api_found = GL_TRUE;
1068 break;
1069 case EXTRA_NEW_FRAG_CLAMP:
1070 if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
1071 _mesa_update_state(ctx);
1072 break;
1073 case EXTRA_API_ES2:
1074 api_check = GL_TRUE;
1075 if (ctx->API == API_OPENGLES2)
1076 api_found = GL_TRUE;
1077 break;
1078 case EXTRA_API_ES3:
1079 api_check = GL_TRUE;
1080 if (_mesa_is_gles3(ctx))
1081 api_found = GL_TRUE;
1082 break;
1083 case EXTRA_API_GL:
1084 api_check = GL_TRUE;
1085 if (_mesa_is_desktop_gl(ctx))
1086 api_found = GL_TRUE;
1087 break;
1088 case EXTRA_API_GL_CORE:
1089 api_check = GL_TRUE;
1090 if (ctx->API == API_OPENGL_CORE)
1091 api_found = GL_TRUE;
1092 break;
1093 case EXTRA_NEW_BUFFERS:
1094 if (ctx->NewState & _NEW_BUFFERS)
1095 _mesa_update_state(ctx);
1096 break;
1097 case EXTRA_FLUSH_CURRENT:
1098 FLUSH_CURRENT(ctx, 0);
1099 break;
1100 case EXTRA_VALID_DRAW_BUFFER:
1101 if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
1102 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
1103 func, d->pname - GL_DRAW_BUFFER0_ARB);
1104 return GL_FALSE;
1105 }
1106 break;
1107 case EXTRA_VALID_TEXTURE_UNIT:
1108 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
1109 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
1110 func, ctx->Texture.CurrentUnit);
1111 return GL_FALSE;
1112 }
1113 break;
1114 case EXTRA_VALID_CLIP_DISTANCE:
1115 if (d->pname - GL_CLIP_DISTANCE0 >= ctx->Const.MaxClipPlanes) {
1116 _mesa_error(ctx, GL_INVALID_ENUM, "%s(clip distance %u)",
1117 func, d->pname - GL_CLIP_DISTANCE0);
1118 return GL_FALSE;
1119 }
1120 break;
1121 case EXTRA_GLSL_130:
1122 api_check = GL_TRUE;
1123 if (ctx->Const.GLSLVersion >= 130)
1124 api_found = GL_TRUE;
1125 break;
1126 case EXTRA_EXT_UBO_GS4:
1127 api_check = GL_TRUE;
1128 api_found = (ctx->Extensions.ARB_uniform_buffer_object &&
1129 _mesa_has_geometry_shaders(ctx));
1130 break;
1131 case EXTRA_EXT_ATOMICS_GS4:
1132 api_check = GL_TRUE;
1133 api_found = (ctx->Extensions.ARB_shader_atomic_counters &&
1134 _mesa_has_geometry_shaders(ctx));
1135 break;
1136 case EXTRA_EXT_SHADER_IMAGE_GS4:
1137 api_check = GL_TRUE;
1138 api_found = (ctx->Extensions.ARB_shader_image_load_store &&
1139 _mesa_has_geometry_shaders(ctx));
1140 break;
1141 case EXTRA_END:
1142 break;
1143 default: /* *e is a offset into the extension struct */
1144 api_check = GL_TRUE;
1145 if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
1146 api_found = GL_TRUE;
1147 break;
1148 }
1149 }
1150
1151 if (api_check && !api_found) {
1152 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1153 _mesa_lookup_enum_by_nr(d->pname));
1154 return GL_FALSE;
1155 }
1156
1157 return GL_TRUE;
1158 }
1159
1160 static const struct value_desc error_value =
1161 { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
1162
1163 /**
1164 * Find the struct value_desc corresponding to the enum 'pname'.
1165 *
1166 * We hash the enum value to get an index into the 'table' array,
1167 * which holds the index in the 'values' array of struct value_desc.
1168 * Once we've found the entry, we do the extra checks, if any, then
1169 * look up the value and return a pointer to it.
1170 *
1171 * If the value has to be computed (for example, it's the result of a
1172 * function call or we need to add 1 to it), we use the tmp 'v' to
1173 * store the result.
1174 *
1175 * \param func name of glGet*v() func for error reporting
1176 * \param pname the enum value we're looking up
1177 * \param p is were we return the pointer to the value
1178 * \param v a tmp union value variable in the calling glGet*v() function
1179 *
1180 * \return the struct value_desc corresponding to the enum or a struct
1181 * value_desc of TYPE_INVALID if not found. This lets the calling
1182 * glGet*v() function jump right into a switch statement and
1183 * handle errors there instead of having to check for NULL.
1184 */
1185 static const struct value_desc *
1186 find_value(const char *func, GLenum pname, void **p, union value *v)
1187 {
1188 GET_CURRENT_CONTEXT(ctx);
1189 struct gl_texture_unit *unit;
1190 int mask, hash;
1191 const struct value_desc *d;
1192 int api;
1193
1194 api = ctx->API;
1195 /* We index into the table_set[] list of per-API hash tables using the API's
1196 * value in the gl_api enum. Since GLES 3 doesn't have an API_OPENGL* enum
1197 * value since it's compatible with GLES2 its entry in table_set[] is at the
1198 * end.
1199 */
1200 STATIC_ASSERT(Elements(table_set) == API_OPENGL_LAST + 2);
1201 if (_mesa_is_gles3(ctx)) {
1202 api = API_OPENGL_LAST + 1;
1203 }
1204 mask = Elements(table(api)) - 1;
1205 hash = (pname * prime_factor);
1206 while (1) {
1207 int idx = table(api)[hash & mask];
1208
1209 /* If the enum isn't valid, the hash walk ends with index 0,
1210 * pointing to the first entry of values[] which doesn't hold
1211 * any valid enum. */
1212 if (unlikely(idx == 0)) {
1213 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1214 _mesa_lookup_enum_by_nr(pname));
1215 return &error_value;
1216 }
1217
1218 d = &values[idx];
1219 if (likely(d->pname == pname))
1220 break;
1221
1222 hash += prime_step;
1223 }
1224
1225 if (unlikely(d->extra && !check_extra(ctx, func, d)))
1226 return &error_value;
1227
1228 switch (d->location) {
1229 case LOC_BUFFER:
1230 *p = ((char *) ctx->DrawBuffer + d->offset);
1231 return d;
1232 case LOC_CONTEXT:
1233 *p = ((char *) ctx + d->offset);
1234 return d;
1235 case LOC_ARRAY:
1236 *p = ((char *) ctx->Array.VAO + d->offset);
1237 return d;
1238 case LOC_TEXUNIT:
1239 unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1240 *p = ((char *) unit + d->offset);
1241 return d;
1242 case LOC_CUSTOM:
1243 find_custom_value(ctx, d, v);
1244 *p = v;
1245 return d;
1246 default:
1247 assert(0);
1248 break;
1249 }
1250
1251 /* silence warning */
1252 return &error_value;
1253 }
1254
1255 static const int transpose[] = {
1256 0, 4, 8, 12,
1257 1, 5, 9, 13,
1258 2, 6, 10, 14,
1259 3, 7, 11, 15
1260 };
1261
1262 void GLAPIENTRY
1263 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
1264 {
1265 const struct value_desc *d;
1266 union value v;
1267 GLmatrix *m;
1268 int shift, i;
1269 void *p;
1270
1271 d = find_value("glGetBooleanv", pname, &p, &v);
1272 switch (d->type) {
1273 case TYPE_INVALID:
1274 break;
1275 case TYPE_CONST:
1276 params[0] = INT_TO_BOOLEAN(d->offset);
1277 break;
1278
1279 case TYPE_FLOAT_4:
1280 case TYPE_FLOATN_4:
1281 params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
1282 case TYPE_FLOAT_3:
1283 case TYPE_FLOATN_3:
1284 params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
1285 case TYPE_FLOAT_2:
1286 case TYPE_FLOATN_2:
1287 params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
1288 case TYPE_FLOAT:
1289 case TYPE_FLOATN:
1290 params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
1291 break;
1292
1293 case TYPE_DOUBLEN_2:
1294 params[1] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[1]);
1295 case TYPE_DOUBLEN:
1296 params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
1297 break;
1298
1299 case TYPE_INT_4:
1300 params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
1301 case TYPE_INT_3:
1302 params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
1303 case TYPE_INT_2:
1304 case TYPE_ENUM_2:
1305 params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
1306 case TYPE_INT:
1307 case TYPE_ENUM:
1308 params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
1309 break;
1310
1311 case TYPE_INT_N:
1312 for (i = 0; i < v.value_int_n.n; i++)
1313 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1314 break;
1315
1316 case TYPE_INT64:
1317 params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
1318 break;
1319
1320 case TYPE_BOOLEAN:
1321 params[0] = ((GLboolean*) p)[0];
1322 break;
1323
1324 case TYPE_MATRIX:
1325 m = *(GLmatrix **) p;
1326 for (i = 0; i < 16; i++)
1327 params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
1328 break;
1329
1330 case TYPE_MATRIX_T:
1331 m = *(GLmatrix **) p;
1332 for (i = 0; i < 16; i++)
1333 params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
1334 break;
1335
1336 case TYPE_BIT_0:
1337 case TYPE_BIT_1:
1338 case TYPE_BIT_2:
1339 case TYPE_BIT_3:
1340 case TYPE_BIT_4:
1341 case TYPE_BIT_5:
1342 case TYPE_BIT_6:
1343 case TYPE_BIT_7:
1344 shift = d->type - TYPE_BIT_0;
1345 params[0] = (*(GLbitfield *) p >> shift) & 1;
1346 break;
1347 }
1348 }
1349
1350 void GLAPIENTRY
1351 _mesa_GetFloatv(GLenum pname, GLfloat *params)
1352 {
1353 const struct value_desc *d;
1354 union value v;
1355 GLmatrix *m;
1356 int shift, i;
1357 void *p;
1358
1359 d = find_value("glGetFloatv", pname, &p, &v);
1360 switch (d->type) {
1361 case TYPE_INVALID:
1362 break;
1363 case TYPE_CONST:
1364 params[0] = (GLfloat) d->offset;
1365 break;
1366
1367 case TYPE_FLOAT_4:
1368 case TYPE_FLOATN_4:
1369 params[3] = ((GLfloat *) p)[3];
1370 case TYPE_FLOAT_3:
1371 case TYPE_FLOATN_3:
1372 params[2] = ((GLfloat *) p)[2];
1373 case TYPE_FLOAT_2:
1374 case TYPE_FLOATN_2:
1375 params[1] = ((GLfloat *) p)[1];
1376 case TYPE_FLOAT:
1377 case TYPE_FLOATN:
1378 params[0] = ((GLfloat *) p)[0];
1379 break;
1380
1381 case TYPE_DOUBLEN_2:
1382 params[1] = (GLfloat) (((GLdouble *) p)[1]);
1383 case TYPE_DOUBLEN:
1384 params[0] = (GLfloat) (((GLdouble *) p)[0]);
1385 break;
1386
1387 case TYPE_INT_4:
1388 params[3] = (GLfloat) (((GLint *) p)[3]);
1389 case TYPE_INT_3:
1390 params[2] = (GLfloat) (((GLint *) p)[2]);
1391 case TYPE_INT_2:
1392 case TYPE_ENUM_2:
1393 params[1] = (GLfloat) (((GLint *) p)[1]);
1394 case TYPE_INT:
1395 case TYPE_ENUM:
1396 params[0] = (GLfloat) (((GLint *) p)[0]);
1397 break;
1398
1399 case TYPE_INT_N:
1400 for (i = 0; i < v.value_int_n.n; i++)
1401 params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
1402 break;
1403
1404 case TYPE_INT64:
1405 params[0] = (GLfloat) (((GLint64 *) p)[0]);
1406 break;
1407
1408 case TYPE_BOOLEAN:
1409 params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
1410 break;
1411
1412 case TYPE_MATRIX:
1413 m = *(GLmatrix **) p;
1414 for (i = 0; i < 16; i++)
1415 params[i] = m->m[i];
1416 break;
1417
1418 case TYPE_MATRIX_T:
1419 m = *(GLmatrix **) p;
1420 for (i = 0; i < 16; i++)
1421 params[i] = m->m[transpose[i]];
1422 break;
1423
1424 case TYPE_BIT_0:
1425 case TYPE_BIT_1:
1426 case TYPE_BIT_2:
1427 case TYPE_BIT_3:
1428 case TYPE_BIT_4:
1429 case TYPE_BIT_5:
1430 case TYPE_BIT_6:
1431 case TYPE_BIT_7:
1432 shift = d->type - TYPE_BIT_0;
1433 params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
1434 break;
1435 }
1436 }
1437
1438 void GLAPIENTRY
1439 _mesa_GetIntegerv(GLenum pname, GLint *params)
1440 {
1441 const struct value_desc *d;
1442 union value v;
1443 GLmatrix *m;
1444 int shift, i;
1445 void *p;
1446
1447 d = find_value("glGetIntegerv", pname, &p, &v);
1448 switch (d->type) {
1449 case TYPE_INVALID:
1450 break;
1451 case TYPE_CONST:
1452 params[0] = d->offset;
1453 break;
1454
1455 case TYPE_FLOAT_4:
1456 params[3] = IROUND(((GLfloat *) p)[3]);
1457 case TYPE_FLOAT_3:
1458 params[2] = IROUND(((GLfloat *) p)[2]);
1459 case TYPE_FLOAT_2:
1460 params[1] = IROUND(((GLfloat *) p)[1]);
1461 case TYPE_FLOAT:
1462 params[0] = IROUND(((GLfloat *) p)[0]);
1463 break;
1464
1465 case TYPE_FLOATN_4:
1466 params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
1467 case TYPE_FLOATN_3:
1468 params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
1469 case TYPE_FLOATN_2:
1470 params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
1471 case TYPE_FLOATN:
1472 params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
1473 break;
1474
1475 case TYPE_DOUBLEN_2:
1476 params[1] = FLOAT_TO_INT(((GLdouble *) p)[1]);
1477 case TYPE_DOUBLEN:
1478 params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
1479 break;
1480
1481 case TYPE_INT_4:
1482 params[3] = ((GLint *) p)[3];
1483 case TYPE_INT_3:
1484 params[2] = ((GLint *) p)[2];
1485 case TYPE_INT_2:
1486 case TYPE_ENUM_2:
1487 params[1] = ((GLint *) p)[1];
1488 case TYPE_INT:
1489 case TYPE_ENUM:
1490 params[0] = ((GLint *) p)[0];
1491 break;
1492
1493 case TYPE_INT_N:
1494 for (i = 0; i < v.value_int_n.n; i++)
1495 params[i] = v.value_int_n.ints[i];
1496 break;
1497
1498 case TYPE_INT64:
1499 params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
1500 break;
1501
1502 case TYPE_BOOLEAN:
1503 params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
1504 break;
1505
1506 case TYPE_MATRIX:
1507 m = *(GLmatrix **) p;
1508 for (i = 0; i < 16; i++)
1509 params[i] = FLOAT_TO_INT(m->m[i]);
1510 break;
1511
1512 case TYPE_MATRIX_T:
1513 m = *(GLmatrix **) p;
1514 for (i = 0; i < 16; i++)
1515 params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
1516 break;
1517
1518 case TYPE_BIT_0:
1519 case TYPE_BIT_1:
1520 case TYPE_BIT_2:
1521 case TYPE_BIT_3:
1522 case TYPE_BIT_4:
1523 case TYPE_BIT_5:
1524 case TYPE_BIT_6:
1525 case TYPE_BIT_7:
1526 shift = d->type - TYPE_BIT_0;
1527 params[0] = (*(GLbitfield *) p >> shift) & 1;
1528 break;
1529 }
1530 }
1531
1532 void GLAPIENTRY
1533 _mesa_GetInteger64v(GLenum pname, GLint64 *params)
1534 {
1535 const struct value_desc *d;
1536 union value v;
1537 GLmatrix *m;
1538 int shift, i;
1539 void *p;
1540
1541 d = find_value("glGetInteger64v", pname, &p, &v);
1542 switch (d->type) {
1543 case TYPE_INVALID:
1544 break;
1545 case TYPE_CONST:
1546 params[0] = d->offset;
1547 break;
1548
1549 case TYPE_FLOAT_4:
1550 params[3] = IROUND64(((GLfloat *) p)[3]);
1551 case TYPE_FLOAT_3:
1552 params[2] = IROUND64(((GLfloat *) p)[2]);
1553 case TYPE_FLOAT_2:
1554 params[1] = IROUND64(((GLfloat *) p)[1]);
1555 case TYPE_FLOAT:
1556 params[0] = IROUND64(((GLfloat *) p)[0]);
1557 break;
1558
1559 case TYPE_FLOATN_4:
1560 params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
1561 case TYPE_FLOATN_3:
1562 params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
1563 case TYPE_FLOATN_2:
1564 params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
1565 case TYPE_FLOATN:
1566 params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
1567 break;
1568
1569 case TYPE_DOUBLEN_2:
1570 params[1] = FLOAT_TO_INT64(((GLdouble *) p)[1]);
1571 case TYPE_DOUBLEN:
1572 params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
1573 break;
1574
1575 case TYPE_INT_4:
1576 params[3] = ((GLint *) p)[3];
1577 case TYPE_INT_3:
1578 params[2] = ((GLint *) p)[2];
1579 case TYPE_INT_2:
1580 case TYPE_ENUM_2:
1581 params[1] = ((GLint *) p)[1];
1582 case TYPE_INT:
1583 case TYPE_ENUM:
1584 params[0] = ((GLint *) p)[0];
1585 break;
1586
1587 case TYPE_INT_N:
1588 for (i = 0; i < v.value_int_n.n; i++)
1589 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1590 break;
1591
1592 case TYPE_INT64:
1593 params[0] = ((GLint64 *) p)[0];
1594 break;
1595
1596 case TYPE_BOOLEAN:
1597 params[0] = ((GLboolean*) p)[0];
1598 break;
1599
1600 case TYPE_MATRIX:
1601 m = *(GLmatrix **) p;
1602 for (i = 0; i < 16; i++)
1603 params[i] = FLOAT_TO_INT64(m->m[i]);
1604 break;
1605
1606 case TYPE_MATRIX_T:
1607 m = *(GLmatrix **) p;
1608 for (i = 0; i < 16; i++)
1609 params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
1610 break;
1611
1612 case TYPE_BIT_0:
1613 case TYPE_BIT_1:
1614 case TYPE_BIT_2:
1615 case TYPE_BIT_3:
1616 case TYPE_BIT_4:
1617 case TYPE_BIT_5:
1618 case TYPE_BIT_6:
1619 case TYPE_BIT_7:
1620 shift = d->type - TYPE_BIT_0;
1621 params[0] = (*(GLbitfield *) p >> shift) & 1;
1622 break;
1623 }
1624 }
1625
1626 void GLAPIENTRY
1627 _mesa_GetDoublev(GLenum pname, GLdouble *params)
1628 {
1629 const struct value_desc *d;
1630 union value v;
1631 GLmatrix *m;
1632 int shift, i;
1633 void *p;
1634
1635 d = find_value("glGetDoublev", pname, &p, &v);
1636 switch (d->type) {
1637 case TYPE_INVALID:
1638 break;
1639 case TYPE_CONST:
1640 params[0] = d->offset;
1641 break;
1642
1643 case TYPE_FLOAT_4:
1644 case TYPE_FLOATN_4:
1645 params[3] = ((GLfloat *) p)[3];
1646 case TYPE_FLOAT_3:
1647 case TYPE_FLOATN_3:
1648 params[2] = ((GLfloat *) p)[2];
1649 case TYPE_FLOAT_2:
1650 case TYPE_FLOATN_2:
1651 params[1] = ((GLfloat *) p)[1];
1652 case TYPE_FLOAT:
1653 case TYPE_FLOATN:
1654 params[0] = ((GLfloat *) p)[0];
1655 break;
1656
1657 case TYPE_DOUBLEN_2:
1658 params[1] = ((GLdouble *) p)[1];
1659 case TYPE_DOUBLEN:
1660 params[0] = ((GLdouble *) p)[0];
1661 break;
1662
1663 case TYPE_INT_4:
1664 params[3] = ((GLint *) p)[3];
1665 case TYPE_INT_3:
1666 params[2] = ((GLint *) p)[2];
1667 case TYPE_INT_2:
1668 case TYPE_ENUM_2:
1669 params[1] = ((GLint *) p)[1];
1670 case TYPE_INT:
1671 case TYPE_ENUM:
1672 params[0] = ((GLint *) p)[0];
1673 break;
1674
1675 case TYPE_INT_N:
1676 for (i = 0; i < v.value_int_n.n; i++)
1677 params[i] = v.value_int_n.ints[i];
1678 break;
1679
1680 case TYPE_INT64:
1681 params[0] = (GLdouble) (((GLint64 *) p)[0]);
1682 break;
1683
1684 case TYPE_BOOLEAN:
1685 params[0] = *(GLboolean*) p;
1686 break;
1687
1688 case TYPE_MATRIX:
1689 m = *(GLmatrix **) p;
1690 for (i = 0; i < 16; i++)
1691 params[i] = m->m[i];
1692 break;
1693
1694 case TYPE_MATRIX_T:
1695 m = *(GLmatrix **) p;
1696 for (i = 0; i < 16; i++)
1697 params[i] = m->m[transpose[i]];
1698 break;
1699
1700 case TYPE_BIT_0:
1701 case TYPE_BIT_1:
1702 case TYPE_BIT_2:
1703 case TYPE_BIT_3:
1704 case TYPE_BIT_4:
1705 case TYPE_BIT_5:
1706 case TYPE_BIT_6:
1707 case TYPE_BIT_7:
1708 shift = d->type - TYPE_BIT_0;
1709 params[0] = (*(GLbitfield *) p >> shift) & 1;
1710 break;
1711 }
1712 }
1713
1714 static enum value_type
1715 find_value_indexed(const char *func, GLenum pname, GLuint index, union value *v)
1716 {
1717 GET_CURRENT_CONTEXT(ctx);
1718
1719 switch (pname) {
1720
1721 case GL_BLEND:
1722 if (index >= ctx->Const.MaxDrawBuffers)
1723 goto invalid_value;
1724 if (!ctx->Extensions.EXT_draw_buffers2)
1725 goto invalid_enum;
1726 v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
1727 return TYPE_INT;
1728
1729 case GL_BLEND_SRC:
1730 /* fall-through */
1731 case GL_BLEND_SRC_RGB:
1732 if (index >= ctx->Const.MaxDrawBuffers)
1733 goto invalid_value;
1734 if (!ctx->Extensions.ARB_draw_buffers_blend)
1735 goto invalid_enum;
1736 v->value_int = ctx->Color.Blend[index].SrcRGB;
1737 return TYPE_INT;
1738 case GL_BLEND_SRC_ALPHA:
1739 if (index >= ctx->Const.MaxDrawBuffers)
1740 goto invalid_value;
1741 if (!ctx->Extensions.ARB_draw_buffers_blend)
1742 goto invalid_enum;
1743 v->value_int = ctx->Color.Blend[index].SrcA;
1744 return TYPE_INT;
1745 case GL_BLEND_DST:
1746 /* fall-through */
1747 case GL_BLEND_DST_RGB:
1748 if (index >= ctx->Const.MaxDrawBuffers)
1749 goto invalid_value;
1750 if (!ctx->Extensions.ARB_draw_buffers_blend)
1751 goto invalid_enum;
1752 v->value_int = ctx->Color.Blend[index].DstRGB;
1753 return TYPE_INT;
1754 case GL_BLEND_DST_ALPHA:
1755 if (index >= ctx->Const.MaxDrawBuffers)
1756 goto invalid_value;
1757 if (!ctx->Extensions.ARB_draw_buffers_blend)
1758 goto invalid_enum;
1759 v->value_int = ctx->Color.Blend[index].DstA;
1760 return TYPE_INT;
1761 case GL_BLEND_EQUATION_RGB:
1762 if (index >= ctx->Const.MaxDrawBuffers)
1763 goto invalid_value;
1764 if (!ctx->Extensions.ARB_draw_buffers_blend)
1765 goto invalid_enum;
1766 v->value_int = ctx->Color.Blend[index].EquationRGB;
1767 return TYPE_INT;
1768 case GL_BLEND_EQUATION_ALPHA:
1769 if (index >= ctx->Const.MaxDrawBuffers)
1770 goto invalid_value;
1771 if (!ctx->Extensions.ARB_draw_buffers_blend)
1772 goto invalid_enum;
1773 v->value_int = ctx->Color.Blend[index].EquationA;
1774 return TYPE_INT;
1775
1776 case GL_COLOR_WRITEMASK:
1777 if (index >= ctx->Const.MaxDrawBuffers)
1778 goto invalid_value;
1779 if (!ctx->Extensions.EXT_draw_buffers2)
1780 goto invalid_enum;
1781 v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
1782 v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
1783 v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
1784 v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
1785 return TYPE_INT_4;
1786
1787 case GL_SCISSOR_BOX:
1788 if (index >= ctx->Const.MaxViewports)
1789 goto invalid_value;
1790 v->value_int_4[0] = ctx->Scissor.ScissorArray[index].X;
1791 v->value_int_4[1] = ctx->Scissor.ScissorArray[index].Y;
1792 v->value_int_4[2] = ctx->Scissor.ScissorArray[index].Width;
1793 v->value_int_4[3] = ctx->Scissor.ScissorArray[index].Height;
1794 return TYPE_INT_4;
1795
1796 case GL_VIEWPORT:
1797 if (index >= ctx->Const.MaxViewports)
1798 goto invalid_value;
1799 v->value_float_4[0] = ctx->ViewportArray[index].X;
1800 v->value_float_4[1] = ctx->ViewportArray[index].Y;
1801 v->value_float_4[2] = ctx->ViewportArray[index].Width;
1802 v->value_float_4[3] = ctx->ViewportArray[index].Height;
1803 return TYPE_FLOAT_4;
1804
1805 case GL_DEPTH_RANGE:
1806 if (index >= ctx->Const.MaxViewports)
1807 goto invalid_value;
1808 v->value_double_2[0] = ctx->ViewportArray[index].Near;
1809 v->value_double_2[1] = ctx->ViewportArray[index].Far;
1810 return TYPE_DOUBLEN_2;
1811
1812 case GL_TRANSFORM_FEEDBACK_BUFFER_START:
1813 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1814 goto invalid_value;
1815 if (!ctx->Extensions.EXT_transform_feedback)
1816 goto invalid_enum;
1817 v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
1818 return TYPE_INT64;
1819
1820 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
1821 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1822 goto invalid_value;
1823 if (!ctx->Extensions.EXT_transform_feedback)
1824 goto invalid_enum;
1825 v->value_int64
1826 = ctx->TransformFeedback.CurrentObject->RequestedSize[index];
1827 return TYPE_INT64;
1828
1829 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
1830 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1831 goto invalid_value;
1832 if (!ctx->Extensions.EXT_transform_feedback)
1833 goto invalid_enum;
1834 v->value_int = ctx->TransformFeedback.CurrentObject->BufferNames[index];
1835 return TYPE_INT;
1836
1837 case GL_UNIFORM_BUFFER_BINDING:
1838 if (index >= ctx->Const.MaxUniformBufferBindings)
1839 goto invalid_value;
1840 if (!ctx->Extensions.ARB_uniform_buffer_object)
1841 goto invalid_enum;
1842 v->value_int = ctx->UniformBufferBindings[index].BufferObject->Name;
1843 return TYPE_INT;
1844
1845 case GL_UNIFORM_BUFFER_START:
1846 if (index >= ctx->Const.MaxUniformBufferBindings)
1847 goto invalid_value;
1848 if (!ctx->Extensions.ARB_uniform_buffer_object)
1849 goto invalid_enum;
1850 v->value_int = ctx->UniformBufferBindings[index].Offset;
1851 return TYPE_INT;
1852
1853 case GL_UNIFORM_BUFFER_SIZE:
1854 if (index >= ctx->Const.MaxUniformBufferBindings)
1855 goto invalid_value;
1856 if (!ctx->Extensions.ARB_uniform_buffer_object)
1857 goto invalid_enum;
1858 v->value_int = ctx->UniformBufferBindings[index].Size;
1859 return TYPE_INT;
1860
1861 /* ARB_texture_multisample / GL3.2 */
1862 case GL_SAMPLE_MASK_VALUE:
1863 if (index != 0)
1864 goto invalid_value;
1865 if (!ctx->Extensions.ARB_texture_multisample)
1866 goto invalid_enum;
1867 v->value_int = ctx->Multisample.SampleMaskValue;
1868 return TYPE_INT;
1869
1870 case GL_ATOMIC_COUNTER_BUFFER_BINDING:
1871 if (!ctx->Extensions.ARB_shader_atomic_counters)
1872 goto invalid_enum;
1873 if (index >= ctx->Const.MaxAtomicBufferBindings)
1874 goto invalid_value;
1875 v->value_int = ctx->AtomicBufferBindings[index].BufferObject->Name;
1876 return TYPE_INT;
1877
1878 case GL_ATOMIC_COUNTER_BUFFER_START:
1879 if (!ctx->Extensions.ARB_shader_atomic_counters)
1880 goto invalid_enum;
1881 if (index >= ctx->Const.MaxAtomicBufferBindings)
1882 goto invalid_value;
1883 v->value_int64 = ctx->AtomicBufferBindings[index].Offset;
1884 return TYPE_INT64;
1885
1886 case GL_ATOMIC_COUNTER_BUFFER_SIZE:
1887 if (!ctx->Extensions.ARB_shader_atomic_counters)
1888 goto invalid_enum;
1889 if (index >= ctx->Const.MaxAtomicBufferBindings)
1890 goto invalid_value;
1891 v->value_int64 = ctx->AtomicBufferBindings[index].Size;
1892 return TYPE_INT64;
1893
1894 case GL_VERTEX_BINDING_DIVISOR:
1895 if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_instanced_arrays)
1896 goto invalid_enum;
1897 if (index >= ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs)
1898 goto invalid_value;
1899 v->value_int = ctx->Array.VAO->VertexBinding[VERT_ATTRIB_GENERIC(index)].InstanceDivisor;
1900 return TYPE_INT;
1901
1902 case GL_VERTEX_BINDING_OFFSET:
1903 if (!_mesa_is_desktop_gl(ctx))
1904 goto invalid_enum;
1905 if (index >= ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs)
1906 goto invalid_value;
1907 v->value_int = ctx->Array.VAO->VertexBinding[VERT_ATTRIB_GENERIC(index)].Offset;
1908 return TYPE_INT;
1909
1910 case GL_VERTEX_BINDING_STRIDE:
1911 if (!_mesa_is_desktop_gl(ctx))
1912 goto invalid_enum;
1913 if (index >= ctx->Const.Program[MESA_SHADER_VERTEX].MaxAttribs)
1914 goto invalid_value;
1915 v->value_int = ctx->Array.VAO->VertexBinding[VERT_ATTRIB_GENERIC(index)].Stride;
1916
1917 /* ARB_shader_image_load_store */
1918 case GL_IMAGE_BINDING_NAME: {
1919 struct gl_texture_object *t;
1920
1921 if (!ctx->Extensions.ARB_shader_image_load_store)
1922 goto invalid_enum;
1923 if (index >= ctx->Const.MaxImageUnits)
1924 goto invalid_value;
1925
1926 t = ctx->ImageUnits[index].TexObj;
1927 v->value_int = (t ? t->Name : 0);
1928 return TYPE_INT;
1929 }
1930
1931 case GL_IMAGE_BINDING_LEVEL:
1932 if (!ctx->Extensions.ARB_shader_image_load_store)
1933 goto invalid_enum;
1934 if (index >= ctx->Const.MaxImageUnits)
1935 goto invalid_value;
1936
1937 v->value_int = ctx->ImageUnits[index].Level;
1938 return TYPE_INT;
1939
1940 case GL_IMAGE_BINDING_LAYERED:
1941 if (!ctx->Extensions.ARB_shader_image_load_store)
1942 goto invalid_enum;
1943 if (index >= ctx->Const.MaxImageUnits)
1944 goto invalid_value;
1945
1946 v->value_int = ctx->ImageUnits[index].Layered;
1947 return TYPE_INT;
1948
1949 case GL_IMAGE_BINDING_LAYER:
1950 if (!ctx->Extensions.ARB_shader_image_load_store)
1951 goto invalid_enum;
1952 if (index >= ctx->Const.MaxImageUnits)
1953 goto invalid_value;
1954
1955 v->value_int = ctx->ImageUnits[index].Layer;
1956 return TYPE_INT;
1957
1958 case GL_IMAGE_BINDING_ACCESS:
1959 if (!ctx->Extensions.ARB_shader_image_load_store)
1960 goto invalid_enum;
1961 if (index >= ctx->Const.MaxImageUnits)
1962 goto invalid_value;
1963
1964 v->value_int = ctx->ImageUnits[index].Access;
1965 return TYPE_INT;
1966
1967 case GL_IMAGE_BINDING_FORMAT:
1968 if (!ctx->Extensions.ARB_shader_image_load_store)
1969 goto invalid_enum;
1970 if (index >= ctx->Const.MaxImageUnits)
1971 goto invalid_value;
1972
1973 v->value_int = ctx->ImageUnits[index].Format;
1974 return TYPE_INT;
1975
1976 case GL_MAX_COMPUTE_WORK_GROUP_COUNT:
1977 if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_compute_shader)
1978 goto invalid_enum;
1979 if (index >= 3)
1980 goto invalid_value;
1981 v->value_int = ctx->Const.MaxComputeWorkGroupCount[index];
1982 return TYPE_INT;
1983
1984 case GL_MAX_COMPUTE_WORK_GROUP_SIZE:
1985 if (!_mesa_is_desktop_gl(ctx) || !ctx->Extensions.ARB_compute_shader)
1986 goto invalid_enum;
1987 if (index >= 3)
1988 goto invalid_value;
1989 v->value_int = ctx->Const.MaxComputeWorkGroupSize[index];
1990 return TYPE_INT;
1991 }
1992
1993 invalid_enum:
1994 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1995 _mesa_lookup_enum_by_nr(pname));
1996 return TYPE_INVALID;
1997 invalid_value:
1998 _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
1999 _mesa_lookup_enum_by_nr(pname));
2000 return TYPE_INVALID;
2001 }
2002
2003 void GLAPIENTRY
2004 _mesa_GetBooleani_v( GLenum pname, GLuint index, GLboolean *params )
2005 {
2006 union value v;
2007 enum value_type type =
2008 find_value_indexed("glGetBooleani_v", pname, index, &v);
2009
2010 switch (type) {
2011 case TYPE_INT:
2012 params[0] = INT_TO_BOOLEAN(v.value_int);
2013 break;
2014 case TYPE_INT_4:
2015 params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
2016 params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
2017 params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
2018 params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
2019 break;
2020 case TYPE_INT64:
2021 params[0] = INT64_TO_BOOLEAN(v.value_int64);
2022 break;
2023 default:
2024 ; /* nothing - GL error was recorded */
2025 }
2026 }
2027
2028 void GLAPIENTRY
2029 _mesa_GetIntegeri_v( GLenum pname, GLuint index, GLint *params )
2030 {
2031 union value v;
2032 enum value_type type =
2033 find_value_indexed("glGetIntegeri_v", pname, index, &v);
2034
2035 switch (type) {
2036 case TYPE_FLOAT_4:
2037 case TYPE_FLOATN_4:
2038 params[3] = IROUND(v.value_float_4[3]);
2039 case TYPE_FLOAT_3:
2040 case TYPE_FLOATN_3:
2041 params[2] = IROUND(v.value_float_4[2]);
2042 case TYPE_FLOAT_2:
2043 case TYPE_FLOATN_2:
2044 params[1] = IROUND(v.value_float_4[1]);
2045 case TYPE_FLOAT:
2046 case TYPE_FLOATN:
2047 params[0] = IROUND(v.value_float_4[0]);
2048 break;
2049
2050 case TYPE_DOUBLEN_2:
2051 params[1] = IROUND(v.value_double_2[1]);
2052 case TYPE_DOUBLEN:
2053 params[0] = IROUND(v.value_double_2[0]);
2054 break;
2055
2056 case TYPE_INT:
2057 params[0] = v.value_int;
2058 break;
2059 case TYPE_INT_4:
2060 params[0] = v.value_int_4[0];
2061 params[1] = v.value_int_4[1];
2062 params[2] = v.value_int_4[2];
2063 params[3] = v.value_int_4[3];
2064 break;
2065 case TYPE_INT64:
2066 params[0] = INT64_TO_INT(v.value_int64);
2067 break;
2068 default:
2069 ; /* nothing - GL error was recorded */
2070 }
2071 }
2072
2073 void GLAPIENTRY
2074 _mesa_GetInteger64i_v( GLenum pname, GLuint index, GLint64 *params )
2075 {
2076 union value v;
2077 enum value_type type =
2078 find_value_indexed("glGetInteger64i_v", pname, index, &v);
2079
2080 switch (type) {
2081 case TYPE_INT:
2082 params[0] = v.value_int;
2083 break;
2084 case TYPE_INT_4:
2085 params[0] = v.value_int_4[0];
2086 params[1] = v.value_int_4[1];
2087 params[2] = v.value_int_4[2];
2088 params[3] = v.value_int_4[3];
2089 break;
2090 case TYPE_INT64:
2091 params[0] = v.value_int64;
2092 break;
2093 default:
2094 ; /* nothing - GL error was recorded */
2095 }
2096 }
2097
2098 void GLAPIENTRY
2099 _mesa_GetFloati_v(GLenum pname, GLuint index, GLfloat *params)
2100 {
2101 int i;
2102 GLmatrix *m;
2103 union value v;
2104 enum value_type type =
2105 find_value_indexed("glGetFloati_v", pname, index, &v);
2106
2107 switch (type) {
2108 case TYPE_FLOAT_4:
2109 case TYPE_FLOATN_4:
2110 params[3] = v.value_float_4[3];
2111 case TYPE_FLOAT_3:
2112 case TYPE_FLOATN_3:
2113 params[2] = v.value_float_4[2];
2114 case TYPE_FLOAT_2:
2115 case TYPE_FLOATN_2:
2116 params[1] = v.value_float_4[1];
2117 case TYPE_FLOAT:
2118 case TYPE_FLOATN:
2119 params[0] = v.value_float_4[0];
2120 break;
2121
2122 case TYPE_DOUBLEN_2:
2123 params[1] = (GLfloat) v.value_double_2[1];
2124 case TYPE_DOUBLEN:
2125 params[0] = (GLfloat) v.value_double_2[0];
2126 break;
2127
2128 case TYPE_INT_4:
2129 params[3] = (GLfloat) v.value_int_4[3];
2130 case TYPE_INT_3:
2131 params[2] = (GLfloat) v.value_int_4[2];
2132 case TYPE_INT_2:
2133 case TYPE_ENUM_2:
2134 params[1] = (GLfloat) v.value_int_4[1];
2135 case TYPE_INT:
2136 case TYPE_ENUM:
2137 params[0] = (GLfloat) v.value_int_4[0];
2138 break;
2139
2140 case TYPE_INT_N:
2141 for (i = 0; i < v.value_int_n.n; i++)
2142 params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
2143 break;
2144
2145 case TYPE_INT64:
2146 params[0] = (GLfloat) v.value_int64;
2147 break;
2148
2149 case TYPE_BOOLEAN:
2150 params[0] = BOOLEAN_TO_FLOAT(v.value_bool);
2151 break;
2152
2153 case TYPE_MATRIX:
2154 m = *(GLmatrix **) &v;
2155 for (i = 0; i < 16; i++)
2156 params[i] = m->m[i];
2157 break;
2158
2159 case TYPE_MATRIX_T:
2160 m = *(GLmatrix **) &v;
2161 for (i = 0; i < 16; i++)
2162 params[i] = m->m[transpose[i]];
2163 break;
2164
2165 default:
2166 ;
2167 }
2168 }
2169
2170 void GLAPIENTRY
2171 _mesa_GetDoublei_v(GLenum pname, GLuint index, GLdouble *params)
2172 {
2173 int i;
2174 GLmatrix *m;
2175 union value v;
2176 enum value_type type =
2177 find_value_indexed("glGetDoublei_v", pname, index, &v);
2178
2179 switch (type) {
2180 case TYPE_FLOAT_4:
2181 case TYPE_FLOATN_4:
2182 params[3] = (GLdouble) v.value_float_4[3];
2183 case TYPE_FLOAT_3:
2184 case TYPE_FLOATN_3:
2185 params[2] = (GLdouble) v.value_float_4[2];
2186 case TYPE_FLOAT_2:
2187 case TYPE_FLOATN_2:
2188 params[1] = (GLdouble) v.value_float_4[1];
2189 case TYPE_FLOAT:
2190 case TYPE_FLOATN:
2191 params[0] = (GLdouble) v.value_float_4[0];
2192 break;
2193
2194 case TYPE_DOUBLEN_2:
2195 params[1] = v.value_double_2[1];
2196 case TYPE_DOUBLEN:
2197 params[0] = v.value_double_2[0];
2198 break;
2199
2200 case TYPE_INT_4:
2201 params[3] = (GLdouble) v.value_int_4[3];
2202 case TYPE_INT_3:
2203 params[2] = (GLdouble) v.value_int_4[2];
2204 case TYPE_INT_2:
2205 case TYPE_ENUM_2:
2206 params[1] = (GLdouble) v.value_int_4[1];
2207 case TYPE_INT:
2208 case TYPE_ENUM:
2209 params[0] = (GLdouble) v.value_int_4[0];
2210 break;
2211
2212 case TYPE_INT_N:
2213 for (i = 0; i < v.value_int_n.n; i++)
2214 params[i] = (GLdouble) INT_TO_FLOAT(v.value_int_n.ints[i]);
2215 break;
2216
2217 case TYPE_INT64:
2218 params[0] = (GLdouble) v.value_int64;
2219 break;
2220
2221 case TYPE_BOOLEAN:
2222 params[0] = (GLdouble) BOOLEAN_TO_FLOAT(v.value_bool);
2223 break;
2224
2225 case TYPE_MATRIX:
2226 m = *(GLmatrix **) &v;
2227 for (i = 0; i < 16; i++)
2228 params[i] = (GLdouble) m->m[i];
2229 break;
2230
2231 case TYPE_MATRIX_T:
2232 m = *(GLmatrix **) &v;
2233 for (i = 0; i < 16; i++)
2234 params[i] = (GLdouble) m->m[transpose[i]];
2235 break;
2236
2237 default:
2238 ;
2239 }
2240 }
2241
2242 void GLAPIENTRY
2243 _mesa_GetFixedv(GLenum pname, GLfixed *params)
2244 {
2245 const struct value_desc *d;
2246 union value v;
2247 GLmatrix *m;
2248 int shift, i;
2249 void *p;
2250
2251 d = find_value("glGetDoublev", pname, &p, &v);
2252 switch (d->type) {
2253 case TYPE_INVALID:
2254 break;
2255 case TYPE_CONST:
2256 params[0] = INT_TO_FIXED(d->offset);
2257 break;
2258
2259 case TYPE_FLOAT_4:
2260 case TYPE_FLOATN_4:
2261 params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
2262 case TYPE_FLOAT_3:
2263 case TYPE_FLOATN_3:
2264 params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
2265 case TYPE_FLOAT_2:
2266 case TYPE_FLOATN_2:
2267 params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
2268 case TYPE_FLOAT:
2269 case TYPE_FLOATN:
2270 params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
2271 break;
2272
2273 case TYPE_DOUBLEN_2:
2274 params[1] = FLOAT_TO_FIXED(((GLdouble *) p)[1]);
2275 case TYPE_DOUBLEN:
2276 params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
2277 break;
2278
2279 case TYPE_INT_4:
2280 params[3] = INT_TO_FIXED(((GLint *) p)[3]);
2281 case TYPE_INT_3:
2282 params[2] = INT_TO_FIXED(((GLint *) p)[2]);
2283 case TYPE_INT_2:
2284 case TYPE_ENUM_2:
2285 params[1] = INT_TO_FIXED(((GLint *) p)[1]);
2286 case TYPE_INT:
2287 case TYPE_ENUM:
2288 params[0] = INT_TO_FIXED(((GLint *) p)[0]);
2289 break;
2290
2291 case TYPE_INT_N:
2292 for (i = 0; i < v.value_int_n.n; i++)
2293 params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
2294 break;
2295
2296 case TYPE_INT64:
2297 params[0] = ((GLint64 *) p)[0];
2298 break;
2299
2300 case TYPE_BOOLEAN:
2301 params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
2302 break;
2303
2304 case TYPE_MATRIX:
2305 m = *(GLmatrix **) p;
2306 for (i = 0; i < 16; i++)
2307 params[i] = FLOAT_TO_FIXED(m->m[i]);
2308 break;
2309
2310 case TYPE_MATRIX_T:
2311 m = *(GLmatrix **) p;
2312 for (i = 0; i < 16; i++)
2313 params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
2314 break;
2315
2316 case TYPE_BIT_0:
2317 case TYPE_BIT_1:
2318 case TYPE_BIT_2:
2319 case TYPE_BIT_3:
2320 case TYPE_BIT_4:
2321 case TYPE_BIT_5:
2322 case TYPE_BIT_6:
2323 case TYPE_BIT_7:
2324 shift = d->type - TYPE_BIT_0;
2325 params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);
2326 break;
2327 }
2328 }