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