2 * Copyright (C) 2010 Brian Paul All Rights Reserved.
3 * Copyright (C) 2010 Intel Corporation
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included
13 * in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
19 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
22 * Author: Kristian Høgsberg <krh@bitplanet.net>
30 #include "extensions.h"
33 #include "mfeatures.h"
36 #include "texcompress.h"
37 #include "framebuffer.h"
38 #include "samplerobj.h"
40 /* This is a table driven implemetation of the glGet*v() functions.
41 * The basic idea is that most getters just look up an int somewhere
42 * in struct gl_context and then convert it to a bool or float according to
43 * which of glGetIntegerv() glGetBooleanv() etc is being called.
44 * Instead of generating code to do this, we can just record the enum
45 * value and the offset into struct gl_context in an array of structs. Then
46 * in glGet*(), we lookup the struct for the enum in question, and use
47 * the offset to get the int we need.
49 * Sometimes we need to look up a float, a boolean, a bit in a
50 * bitfield, a matrix or other types instead, so we need to track the
51 * type of the value in struct gl_context. And sometimes the value isn't in
52 * struct gl_context but in the drawbuffer, the array object, current texture
53 * unit, or maybe it's a computed value. So we need to also track
54 * where or how to find the value. Finally, we sometimes need to
55 * check that one of a number of extensions are enabled, the GL
56 * version or flush or call _mesa_update_state(). This is done by
57 * attaching optional extra information to the value description
58 * struct, it's sort of like an array of opcodes that describe extra
61 * Putting all this together we end up with struct value_desc below,
62 * and with a couple of macros to help, the table of struct value_desc
63 * is about as concise as the specification in the old python script.
66 #define FLOAT_TO_BOOLEAN(X) ( (X) ? GL_TRUE : GL_FALSE )
67 #define FLOAT_TO_FIXED(F) ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \
68 ((F) * 65536.0f < INT_MIN) ? INT_MIN : \
69 (GLint) ((F) * 65536.0f) )
71 #define INT_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
72 #define INT_TO_FIXED(I) ( ((I) > SHRT_MAX) ? INT_MAX : \
73 ((I) < SHRT_MIN) ? INT_MIN : \
74 (GLint) ((I) * 65536) )
76 #define INT64_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
77 #define INT64_TO_INT(I) ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )
79 #define BOOLEAN_TO_INT(B) ( (GLint) (B) )
80 #define BOOLEAN_TO_INT64(B) ( (GLint64) (B) )
81 #define BOOLEAN_TO_FLOAT(B) ( (B) ? 1.0F : 0.0F )
82 #define BOOLEAN_TO_FIXED(B) ( (GLint) ((B) ? 1 : 0) << 16 )
84 #define ENUM_TO_INT64(E) ( (GLint64) (E) )
85 #define ENUM_TO_FIXED(E) (E)
120 enum value_location {
138 EXTRA_NEW_FRAG_CLAMP,
139 EXTRA_VALID_DRAW_BUFFER,
140 EXTRA_VALID_TEXTURE_UNIT,
141 EXTRA_VALID_CLIP_DISTANCE,
146 #define NO_EXTRA NULL
151 GLubyte location; /**< enum value_location */
152 GLubyte type; /**< enum value_type */
159 GLfloat value_float_4[4];
160 GLmatrix *value_matrix;
162 GLint value_int_4[4];
166 /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
170 GLboolean value_bool;
173 #define BUFFER_FIELD(field, type) \
174 LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
175 #define CONTEXT_FIELD(field, type) \
176 LOC_CONTEXT, type, offsetof(struct gl_context, field)
177 #define ARRAY_FIELD(field, type) \
178 LOC_ARRAY, type, offsetof(struct gl_array_object, field)
179 #undef CONST /* already defined through windows.h */
180 #define CONST(value) \
181 LOC_CONTEXT, TYPE_CONST, value
183 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
184 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
185 #define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
187 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
188 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
189 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
190 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
191 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
192 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
193 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
194 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
195 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
196 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
197 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
198 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
199 #define CONTEXT_BIT6(field) CONTEXT_FIELD(field, TYPE_BIT_6)
200 #define CONTEXT_BIT7(field) CONTEXT_FIELD(field, TYPE_BIT_7)
201 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
202 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
203 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
204 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
205 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
206 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
208 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
209 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
210 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
213 offsetof(struct gl_extensions, f)
215 #define EXTRA_EXT(e) \
216 static const int extra_##e[] = { \
220 #define EXTRA_EXT2(e1, e2) \
221 static const int extra_##e1##_##e2[] = { \
222 EXT(e1), EXT(e2), EXTRA_END \
225 /* The 'extra' mechanism is a way to specify extra checks (such as
226 * extensions or specific gl versions) or actions (flush current, new
227 * buffers) that we need to do before looking up an enum. We need to
228 * declare them all up front so we can refer to them in the value_desc
231 static const int extra_new_buffers[] = {
236 static const int extra_new_frag_clamp[] = {
237 EXTRA_NEW_FRAG_CLAMP,
241 static const int extra_valid_draw_buffer[] = {
242 EXTRA_VALID_DRAW_BUFFER,
246 static const int extra_valid_texture_unit[] = {
247 EXTRA_VALID_TEXTURE_UNIT,
251 static const int extra_valid_clip_distance[] = {
252 EXTRA_VALID_CLIP_DISTANCE,
256 static const int extra_flush_current_valid_texture_unit[] = {
258 EXTRA_VALID_TEXTURE_UNIT,
262 static const int extra_flush_current[] = {
267 static const int extra_EXT_secondary_color_flush_current[] = {
268 EXT(EXT_secondary_color),
273 static const int extra_EXT_fog_coord_flush_current[] = {
279 static const int extra_EXT_texture_integer[] = {
280 EXT(EXT_texture_integer),
284 static const int extra_EXT_texture_integer_and_new_buffers[] = {
285 EXT(EXT_texture_integer),
290 static const int extra_GLSL_130[] = {
295 static const int extra_texture_buffer_object[] = {
298 EXT(ARB_texture_buffer_object),
302 static const int extra_ARB_transform_feedback2_api_es3[] = {
303 EXT(ARB_transform_feedback2),
308 static const int extra_ARB_uniform_buffer_object_and_geometry_shader[] = {
309 EXT(ARB_uniform_buffer_object),
310 EXT(ARB_geometry_shader4),
314 static const int extra_ARB_ES2_compatibility_api_es2[] = {
315 EXT(ARB_ES2_compatibility),
320 static const int extra_ARB_ES3_compatibility_api_es3[] = {
321 EXT(ARB_ES3_compatibility),
326 static const int extra_EXT_framebuffer_sRGB_and_new_buffers[] = {
327 EXT(EXT_framebuffer_sRGB),
332 EXTRA_EXT(ARB_texture_cube_map);
333 EXTRA_EXT(MESA_texture_array);
334 EXTRA_EXT2(EXT_secondary_color, ARB_vertex_program);
335 EXTRA_EXT(EXT_secondary_color);
336 EXTRA_EXT(EXT_fog_coord);
337 EXTRA_EXT(NV_fog_distance);
338 EXTRA_EXT(EXT_texture_filter_anisotropic);
339 EXTRA_EXT(NV_point_sprite);
340 EXTRA_EXT(NV_texture_rectangle);
341 EXTRA_EXT(EXT_stencil_two_side);
342 EXTRA_EXT(EXT_depth_bounds_test);
343 EXTRA_EXT(ARB_depth_clamp);
344 EXTRA_EXT(ATI_fragment_shader);
345 EXTRA_EXT(EXT_framebuffer_blit);
346 EXTRA_EXT(ARB_shader_objects);
347 EXTRA_EXT(EXT_provoking_vertex);
348 EXTRA_EXT(ARB_fragment_shader);
349 EXTRA_EXT(ARB_fragment_program);
350 EXTRA_EXT2(ARB_framebuffer_object, EXT_framebuffer_multisample);
351 EXTRA_EXT(EXT_framebuffer_object);
352 EXTRA_EXT(ARB_seamless_cube_map);
354 EXTRA_EXT(ARB_vertex_shader);
355 EXTRA_EXT(EXT_transform_feedback);
356 EXTRA_EXT(ARB_transform_feedback3);
357 EXTRA_EXT(EXT_pixel_buffer_object);
358 EXTRA_EXT(ARB_vertex_program);
359 EXTRA_EXT2(NV_point_sprite, ARB_point_sprite);
360 EXTRA_EXT2(ARB_vertex_program, ARB_fragment_program);
361 EXTRA_EXT(ARB_geometry_shader4);
362 EXTRA_EXT(ARB_color_buffer_float);
363 EXTRA_EXT(EXT_framebuffer_sRGB);
364 EXTRA_EXT(OES_EGL_image_external);
365 EXTRA_EXT(ARB_blend_func_extended);
366 EXTRA_EXT(ARB_uniform_buffer_object);
367 EXTRA_EXT(ARB_timer_query);
368 EXTRA_EXT(ARB_map_buffer_alignment);
369 EXTRA_EXT(ARB_texture_cube_map_array);
370 EXTRA_EXT(ARB_texture_buffer_range);
371 EXTRA_EXT(ARB_texture_multisample);
374 extra_ARB_color_buffer_float_or_glcore[] = {
375 EXT(ARB_color_buffer_float),
381 extra_NV_primitive_restart[] = {
382 EXT(NV_primitive_restart),
386 static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };
387 static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };
388 static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };
390 static const int extra_gl30_es3[] = {
397 extra_ARB_vertex_program_api_es2[] = {
398 EXT(ARB_vertex_program),
403 /* The ReadBuffer get token is valid under either full GL or under
404 * GLES2 if the NV_read_buffer extension is available. */
406 extra_NV_read_buffer_api_gl[] = {
412 static const int extra_core_ARB_color_buffer_float_and_new_buffers[] = {
414 EXT(ARB_color_buffer_float),
419 /* This is the big table describing all the enums we accept in
420 * glGet*v(). The table is partitioned into six parts: enums
421 * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
422 * between OpenGL and GLES, enums exclusive to GLES, etc for the
423 * remaining combinations. To look up the enums valid in a given API
424 * we will use a hash table specific to that API. These tables are in
425 * turn generated at build time and included through get_hash.h.
426 * The different sections are guarded by #if FEATURE_GL etc to make
427 * sure we only compile in the enums we may need. */
429 #include "get_hash.h"
431 /* All we need now is a way to look up the value struct from the enum.
432 * The code generated by gcc for the old generated big switch
433 * statement is a big, balanced, open coded if/else tree, essentially
434 * an unrolled binary search. It would be natural to sort the new
435 * enum table and use bsearch(), but we will use a read-only hash
436 * table instead. bsearch() has a nice guaranteed worst case
437 * performance, but we're also guaranteed to hit that worst case
438 * (log2(n) iterations) for about half the enums. Instead, using an
439 * open addressing hash table, we can find the enum on the first try
440 * for 80% of the enums, 1 collision for 10% and never more than 5
441 * collisions for any enum (typical numbers). And the code is very
442 * simple, even though it feels a little magic. */
446 print_table_stats(int api)
448 int i, j, collisions[11], count, hash, mask;
449 const struct value_desc *d;
450 const char *api_names[] = {
451 [API_OPENGL_COMPAT] = "GL",
452 [API_OPENGL_CORE] = "GL_CORE",
453 [API_OPENGLES] = "GLES",
454 [API_OPENGLES2] = "GLES2",
456 const char *api_name;
458 api_name = api < Elements(api_names) ? api_names[api] : "N/A";
460 mask = Elements(table(api)) - 1;
461 memset(collisions, 0, sizeof collisions);
463 for (i = 0; i < Elements(table(api)); i++) {
467 d = &values[table(api)[i]];
468 hash = (d->pname * prime_factor);
471 if (values[table(api)[hash & mask]].pname == d->pname)
483 printf("number of enums for %s: %d (total %ld)\n",
484 api_name, count, Elements(values));
485 for (i = 0; i < Elements(collisions) - 1; i++)
486 if (collisions[i] > 0)
487 printf(" %d enums with %d %scollisions\n",
488 collisions[i], i, i == 10 ? "or more " : "");
493 * Initialize the enum hash for a given API
495 * This is called from one_time_init() to insert the enum values that
496 * are valid for the API in question into the enum hash table.
498 * \param the current context, for determining the API in question
500 void _mesa_init_get_hash(struct gl_context *ctx)
508 * Handle irregular enums
510 * Some values don't conform to the "well-known type at context
511 * pointer + offset" pattern, so we have this function to catch all
512 * the corner cases. Typically, it's a computed value or a one-off
513 * pointer to a custom struct or something.
515 * In this case we can't return a pointer to the value, so we'll have
516 * to use the temporary variable 'v' declared back in the calling
517 * glGet*v() function to store the result.
519 * \param ctx the current context
520 * \param d the struct value_desc that describes the enum
521 * \param v pointer to the tmp declared in the calling glGet*v() function
524 find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
526 struct gl_buffer_object **buffer_obj;
527 struct gl_client_array *array;
531 case GL_MAJOR_VERSION:
532 v->value_int = ctx->Version / 10;
534 case GL_MINOR_VERSION:
535 v->value_int = ctx->Version % 10;
541 case GL_TEXTURE_1D_ARRAY_EXT:
542 case GL_TEXTURE_2D_ARRAY_EXT:
543 case GL_TEXTURE_CUBE_MAP_ARB:
544 case GL_TEXTURE_RECTANGLE_NV:
545 case GL_TEXTURE_EXTERNAL_OES:
546 v->value_bool = _mesa_IsEnabled(d->pname);
549 case GL_LINE_STIPPLE_PATTERN:
550 /* This is the only GLushort, special case it here by promoting
551 * to an int rather than introducing a new type. */
552 v->value_int = ctx->Line.StipplePattern;
555 case GL_CURRENT_RASTER_TEXTURE_COORDS:
556 unit = ctx->Texture.CurrentUnit;
557 v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
558 v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
559 v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
560 v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
563 case GL_CURRENT_TEXTURE_COORDS:
564 unit = ctx->Texture.CurrentUnit;
565 v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
566 v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
567 v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
568 v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
571 case GL_COLOR_WRITEMASK:
572 v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
573 v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
574 v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
575 v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
579 v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
583 v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
586 case GL_MAP2_GRID_DOMAIN:
587 v->value_float_4[0] = ctx->Eval.MapGrid2u1;
588 v->value_float_4[1] = ctx->Eval.MapGrid2u2;
589 v->value_float_4[2] = ctx->Eval.MapGrid2v1;
590 v->value_float_4[3] = ctx->Eval.MapGrid2v2;
593 case GL_TEXTURE_STACK_DEPTH:
594 unit = ctx->Texture.CurrentUnit;
595 v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
597 case GL_TEXTURE_MATRIX:
598 unit = ctx->Texture.CurrentUnit;
599 v->value_matrix = ctx->TextureMatrixStack[unit].Top;
602 case GL_TEXTURE_COORD_ARRAY:
603 case GL_TEXTURE_COORD_ARRAY_SIZE:
604 case GL_TEXTURE_COORD_ARRAY_TYPE:
605 case GL_TEXTURE_COORD_ARRAY_STRIDE:
606 array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)];
607 v->value_int = *(GLuint *) ((char *) array + d->offset);
610 case GL_ACTIVE_TEXTURE_ARB:
611 v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
613 case GL_CLIENT_ACTIVE_TEXTURE_ARB:
614 v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
617 case GL_MODELVIEW_STACK_DEPTH:
618 case GL_PROJECTION_STACK_DEPTH:
619 v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
622 case GL_MAX_TEXTURE_SIZE:
623 case GL_MAX_3D_TEXTURE_SIZE:
624 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
625 p = (GLuint *) ((char *) ctx + d->offset);
626 v->value_int = 1 << (*p - 1);
630 v->value_int_4[0] = ctx->Scissor.X;
631 v->value_int_4[1] = ctx->Scissor.Y;
632 v->value_int_4[2] = ctx->Scissor.Width;
633 v->value_int_4[3] = ctx->Scissor.Height;
638 ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
641 if (!ctx->CompileFlag)
643 else if (ctx->ExecuteFlag)
644 v->value_enum = GL_COMPILE_AND_EXECUTE;
646 v->value_enum = GL_COMPILE;
650 v->value_int_4[0] = ctx->Viewport.X;
651 v->value_int_4[1] = ctx->Viewport.Y;
652 v->value_int_4[2] = ctx->Viewport.Width;
653 v->value_int_4[3] = ctx->Viewport.Height;
656 case GL_ACTIVE_STENCIL_FACE_EXT:
657 v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
660 case GL_STENCIL_FAIL:
661 v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
663 case GL_STENCIL_FUNC:
664 v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
666 case GL_STENCIL_PASS_DEPTH_FAIL:
667 v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
669 case GL_STENCIL_PASS_DEPTH_PASS:
670 v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
673 v->value_int = ctx->Stencil.Ref[ctx->Stencil.ActiveFace];
675 case GL_STENCIL_VALUE_MASK:
676 v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
678 case GL_STENCIL_WRITEMASK:
679 v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
682 case GL_NUM_EXTENSIONS:
683 v->value_int = _mesa_get_extension_count(ctx);
686 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
687 v->value_int = _mesa_get_color_read_type(ctx);
689 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
690 v->value_int = _mesa_get_color_read_format(ctx);
693 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
694 v->value_int = ctx->CurrentStack->Depth + 1;
696 case GL_CURRENT_MATRIX_ARB:
697 case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
698 v->value_matrix = ctx->CurrentStack->Top;
701 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
702 v->value_int = _mesa_get_compressed_formats(ctx, NULL);
704 case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
706 _mesa_get_compressed_formats(ctx, v->value_int_n.ints);
707 ASSERT(v->value_int_n.n <= 100);
710 case GL_MAX_VARYING_FLOATS_ARB:
711 v->value_int = ctx->Const.MaxVarying * 4;
714 /* Various object names */
716 case GL_TEXTURE_BINDING_1D:
717 case GL_TEXTURE_BINDING_2D:
718 case GL_TEXTURE_BINDING_3D:
719 case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
720 case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
721 case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
722 case GL_TEXTURE_BINDING_RECTANGLE_NV:
723 case GL_TEXTURE_BINDING_EXTERNAL_OES:
724 case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY:
725 case GL_TEXTURE_BINDING_2D_MULTISAMPLE:
726 case GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY:
727 unit = ctx->Texture.CurrentUnit;
729 ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
732 /* GL_ARB_vertex_buffer_object */
733 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
734 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
735 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
736 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
737 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
738 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
739 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
740 buffer_obj = (struct gl_buffer_object **)
741 ((char *) ctx->Array.ArrayObj + d->offset);
742 v->value_int = (*buffer_obj)->Name;
744 case GL_ARRAY_BUFFER_BINDING_ARB:
745 v->value_int = ctx->Array.ArrayBufferObj->Name;
747 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
749 ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj->Name;
751 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
752 v->value_int = ctx->Array.ArrayObj->ElementArrayBufferObj->Name;
755 /* ARB_copy_buffer */
756 case GL_COPY_READ_BUFFER:
757 v->value_int = ctx->CopyReadBuffer->Name;
759 case GL_COPY_WRITE_BUFFER:
760 v->value_int = ctx->CopyWriteBuffer->Name;
763 case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
764 v->value_int = ctx->Pack.BufferObj->Name;
766 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
767 v->value_int = ctx->Unpack.BufferObj->Name;
769 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
770 v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
772 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
773 v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
775 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
776 v->value_int = ctx->TransformFeedback.CurrentObject->Active;
778 case GL_TRANSFORM_FEEDBACK_BINDING:
779 v->value_int = ctx->TransformFeedback.CurrentObject->Name;
781 case GL_CURRENT_PROGRAM:
783 ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
785 case GL_READ_FRAMEBUFFER_BINDING_EXT:
786 v->value_int = ctx->ReadBuffer->Name;
788 case GL_RENDERBUFFER_BINDING_EXT:
790 ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
792 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
793 v->value_int = ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].BufferObj->Name;
797 if (_mesa_get_clamp_fragment_color(ctx))
798 COPY_4FV(v->value_float_4, ctx->Fog.Color);
800 COPY_4FV(v->value_float_4, ctx->Fog.ColorUnclamped);
802 case GL_COLOR_CLEAR_VALUE:
803 if (_mesa_get_clamp_fragment_color(ctx)) {
804 v->value_float_4[0] = CLAMP(ctx->Color.ClearColor.f[0], 0.0F, 1.0F);
805 v->value_float_4[1] = CLAMP(ctx->Color.ClearColor.f[1], 0.0F, 1.0F);
806 v->value_float_4[2] = CLAMP(ctx->Color.ClearColor.f[2], 0.0F, 1.0F);
807 v->value_float_4[3] = CLAMP(ctx->Color.ClearColor.f[3], 0.0F, 1.0F);
809 COPY_4FV(v->value_float_4, ctx->Color.ClearColor.f);
811 case GL_BLEND_COLOR_EXT:
812 if (_mesa_get_clamp_fragment_color(ctx))
813 COPY_4FV(v->value_float_4, ctx->Color.BlendColor);
815 COPY_4FV(v->value_float_4, ctx->Color.BlendColorUnclamped);
817 case GL_ALPHA_TEST_REF:
818 if (_mesa_get_clamp_fragment_color(ctx))
819 v->value_float = ctx->Color.AlphaRef;
821 v->value_float = ctx->Color.AlphaRefUnclamped;
823 case GL_MAX_VERTEX_UNIFORM_VECTORS:
824 v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;
827 case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
828 v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
831 /* GL_ARB_texture_buffer_object */
832 case GL_TEXTURE_BUFFER_ARB:
833 v->value_int = ctx->Texture.BufferObject->Name;
835 case GL_TEXTURE_BINDING_BUFFER_ARB:
836 unit = ctx->Texture.CurrentUnit;
838 ctx->Texture.Unit[unit].CurrentTex[TEXTURE_BUFFER_INDEX]->Name;
840 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB:
842 struct gl_buffer_object *buf =
843 ctx->Texture.Unit[ctx->Texture.CurrentUnit]
844 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObject;
845 v->value_int = buf ? buf->Name : 0;
848 case GL_TEXTURE_BUFFER_FORMAT_ARB:
849 v->value_int = ctx->Texture.Unit[ctx->Texture.CurrentUnit]
850 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObjectFormat;
853 /* GL_ARB_sampler_objects */
854 case GL_SAMPLER_BINDING:
856 struct gl_sampler_object *samp =
857 ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler;
860 * The sampler object may have been deleted on another context,
861 * so we try to lookup the sampler object before returning its Name.
863 if (samp && _mesa_lookup_samplerobj(ctx, samp->Name)) {
864 v->value_int = samp->Name;
870 /* GL_ARB_uniform_buffer_object */
871 case GL_UNIFORM_BUFFER_BINDING:
872 v->value_int = ctx->UniformBuffer->Name;
874 /* GL_ARB_timer_query */
876 if (ctx->Driver.GetTimestamp) {
877 v->value_int64 = ctx->Driver.GetTimestamp(ctx);
880 _mesa_problem(ctx, "driver doesn't implement GetTimestamp");
887 * Check extra constraints on a struct value_desc descriptor
889 * If a struct value_desc has a non-NULL extra pointer, it means that
890 * there are a number of extra constraints to check or actions to
891 * perform. The extras is just an integer array where each integer
892 * encode different constraints or actions.
894 * \param ctx current context
895 * \param func name of calling glGet*v() function for error reporting
896 * \param d the struct value_desc that has the extra constraints
898 * \return GL_FALSE if all of the constraints were not satisfied,
902 check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
904 const GLuint version = ctx->Version;
910 for (e = d->extra; *e != EXTRA_END; e++)
912 case EXTRA_VERSION_30:
918 case EXTRA_VERSION_31:
924 case EXTRA_VERSION_32:
930 case EXTRA_NEW_FRAG_CLAMP:
931 if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
932 _mesa_update_state(ctx);
935 if (ctx->API == API_OPENGLES2) {
941 if (_mesa_is_gles3(ctx)) {
947 if (_mesa_is_desktop_gl(ctx)) {
952 case EXTRA_API_GL_CORE:
953 if (ctx->API == API_OPENGL_CORE) {
958 case EXTRA_NEW_BUFFERS:
959 if (ctx->NewState & _NEW_BUFFERS)
960 _mesa_update_state(ctx);
962 case EXTRA_FLUSH_CURRENT:
963 FLUSH_CURRENT(ctx, 0);
965 case EXTRA_VALID_DRAW_BUFFER:
966 if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
967 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
968 func, d->pname - GL_DRAW_BUFFER0_ARB);
972 case EXTRA_VALID_TEXTURE_UNIT:
973 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
974 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
975 func, ctx->Texture.CurrentUnit);
979 case EXTRA_VALID_CLIP_DISTANCE:
980 if (d->pname - GL_CLIP_DISTANCE0 >= ctx->Const.MaxClipPlanes) {
981 _mesa_error(ctx, GL_INVALID_ENUM, "%s(clip distance %u)",
982 func, d->pname - GL_CLIP_DISTANCE0);
987 if (ctx->Const.GLSLVersion >= 130) {
994 default: /* *e is a offset into the extension struct */
996 if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
1001 if (total > 0 && enabled == 0) {
1002 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1003 _mesa_lookup_enum_by_nr(d->pname));
1010 static const struct value_desc error_value =
1011 { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
1014 * Find the struct value_desc corresponding to the enum 'pname'.
1016 * We hash the enum value to get an index into the 'table' array,
1017 * which holds the index in the 'values' array of struct value_desc.
1018 * Once we've found the entry, we do the extra checks, if any, then
1019 * look up the value and return a pointer to it.
1021 * If the value has to be computed (for example, it's the result of a
1022 * function call or we need to add 1 to it), we use the tmp 'v' to
1025 * \param func name of glGet*v() func for error reporting
1026 * \param pname the enum value we're looking up
1027 * \param p is were we return the pointer to the value
1028 * \param v a tmp union value variable in the calling glGet*v() function
1030 * \return the struct value_desc corresponding to the enum or a struct
1031 * value_desc of TYPE_INVALID if not found. This lets the calling
1032 * glGet*v() function jump right into a switch statement and
1033 * handle errors there instead of having to check for NULL.
1035 static const struct value_desc *
1036 find_value(const char *func, GLenum pname, void **p, union value *v)
1038 GET_CURRENT_CONTEXT(ctx);
1039 struct gl_texture_unit *unit;
1041 const struct value_desc *d;
1045 /* We index into the table_set[] list of per-API hash tables using the API's
1046 * value in the gl_api enum. Since GLES 3 doesn't have an API_OPENGL* enum
1047 * value since it's compatible with GLES2 its entry in table_set[] is at the
1050 STATIC_ASSERT(Elements(table_set) == API_OPENGL_LAST + 2);
1051 if (_mesa_is_gles3(ctx)) {
1052 api = API_OPENGL_LAST + 1;
1054 mask = Elements(table(api)) - 1;
1055 hash = (pname * prime_factor);
1057 int idx = table(api)[hash & mask];
1059 /* If the enum isn't valid, the hash walk ends with index 0,
1060 * pointing to the first entry of values[] which doesn't hold
1061 * any valid enum. */
1062 if (unlikely(idx == 0)) {
1063 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1064 _mesa_lookup_enum_by_nr(pname));
1065 return &error_value;
1069 if (likely(d->pname == pname))
1075 if (unlikely(d->extra && !check_extra(ctx, func, d)))
1076 return &error_value;
1078 switch (d->location) {
1080 *p = ((char *) ctx->DrawBuffer + d->offset);
1083 *p = ((char *) ctx + d->offset);
1086 *p = ((char *) ctx->Array.ArrayObj + d->offset);
1089 unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1090 *p = ((char *) unit + d->offset);
1093 find_custom_value(ctx, d, v);
1101 /* silence warning */
1102 return &error_value;
1105 static const int transpose[] = {
1113 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
1115 const struct value_desc *d;
1121 d = find_value("glGetBooleanv", pname, &p, &v);
1126 params[0] = INT_TO_BOOLEAN(d->offset);
1131 params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
1134 params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
1137 params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
1140 params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
1144 params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
1148 params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
1150 params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
1153 params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
1156 params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
1160 for (i = 0; i < v.value_int_n.n; i++)
1161 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1165 params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
1169 params[0] = ((GLboolean*) p)[0];
1173 m = *(GLmatrix **) p;
1174 for (i = 0; i < 16; i++)
1175 params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
1179 m = *(GLmatrix **) p;
1180 for (i = 0; i < 16; i++)
1181 params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
1192 shift = d->type - TYPE_BIT_0;
1193 params[0] = (*(GLbitfield *) p >> shift) & 1;
1199 _mesa_GetFloatv(GLenum pname, GLfloat *params)
1201 const struct value_desc *d;
1207 d = find_value("glGetFloatv", pname, &p, &v);
1212 params[0] = (GLfloat) d->offset;
1217 params[3] = ((GLfloat *) p)[3];
1220 params[2] = ((GLfloat *) p)[2];
1223 params[1] = ((GLfloat *) p)[1];
1226 params[0] = ((GLfloat *) p)[0];
1230 params[0] = (GLfloat) (((GLdouble *) p)[0]);
1234 params[3] = (GLfloat) (((GLint *) p)[3]);
1236 params[2] = (GLfloat) (((GLint *) p)[2]);
1239 params[1] = (GLfloat) (((GLint *) p)[1]);
1242 params[0] = (GLfloat) (((GLint *) p)[0]);
1246 for (i = 0; i < v.value_int_n.n; i++)
1247 params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
1251 params[0] = (GLfloat) (((GLint64 *) p)[0]);
1255 params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
1259 m = *(GLmatrix **) p;
1260 for (i = 0; i < 16; i++)
1261 params[i] = m->m[i];
1265 m = *(GLmatrix **) p;
1266 for (i = 0; i < 16; i++)
1267 params[i] = m->m[transpose[i]];
1278 shift = d->type - TYPE_BIT_0;
1279 params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
1285 _mesa_GetIntegerv(GLenum pname, GLint *params)
1287 const struct value_desc *d;
1293 d = find_value("glGetIntegerv", pname, &p, &v);
1298 params[0] = d->offset;
1302 params[3] = IROUND(((GLfloat *) p)[3]);
1304 params[2] = IROUND(((GLfloat *) p)[2]);
1306 params[1] = IROUND(((GLfloat *) p)[1]);
1308 params[0] = IROUND(((GLfloat *) p)[0]);
1312 params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
1314 params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
1316 params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
1318 params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
1322 params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
1326 params[3] = ((GLint *) p)[3];
1328 params[2] = ((GLint *) p)[2];
1331 params[1] = ((GLint *) p)[1];
1334 params[0] = ((GLint *) p)[0];
1338 for (i = 0; i < v.value_int_n.n; i++)
1339 params[i] = v.value_int_n.ints[i];
1343 params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
1347 params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
1351 m = *(GLmatrix **) p;
1352 for (i = 0; i < 16; i++)
1353 params[i] = FLOAT_TO_INT(m->m[i]);
1357 m = *(GLmatrix **) p;
1358 for (i = 0; i < 16; i++)
1359 params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
1370 shift = d->type - TYPE_BIT_0;
1371 params[0] = (*(GLbitfield *) p >> shift) & 1;
1377 _mesa_GetInteger64v(GLenum pname, GLint64 *params)
1379 const struct value_desc *d;
1385 d = find_value("glGetInteger64v", pname, &p, &v);
1390 params[0] = d->offset;
1394 params[3] = IROUND64(((GLfloat *) p)[3]);
1396 params[2] = IROUND64(((GLfloat *) p)[2]);
1398 params[1] = IROUND64(((GLfloat *) p)[1]);
1400 params[0] = IROUND64(((GLfloat *) p)[0]);
1404 params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
1406 params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
1408 params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
1410 params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
1414 params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
1418 params[3] = ((GLint *) p)[3];
1420 params[2] = ((GLint *) p)[2];
1423 params[1] = ((GLint *) p)[1];
1426 params[0] = ((GLint *) p)[0];
1430 for (i = 0; i < v.value_int_n.n; i++)
1431 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1435 params[0] = ((GLint64 *) p)[0];
1439 params[0] = ((GLboolean*) p)[0];
1443 m = *(GLmatrix **) p;
1444 for (i = 0; i < 16; i++)
1445 params[i] = FLOAT_TO_INT64(m->m[i]);
1449 m = *(GLmatrix **) p;
1450 for (i = 0; i < 16; i++)
1451 params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
1462 shift = d->type - TYPE_BIT_0;
1463 params[0] = (*(GLbitfield *) p >> shift) & 1;
1469 _mesa_GetDoublev(GLenum pname, GLdouble *params)
1471 const struct value_desc *d;
1477 d = find_value("glGetDoublev", pname, &p, &v);
1482 params[0] = d->offset;
1487 params[3] = ((GLfloat *) p)[3];
1490 params[2] = ((GLfloat *) p)[2];
1493 params[1] = ((GLfloat *) p)[1];
1496 params[0] = ((GLfloat *) p)[0];
1500 params[0] = ((GLdouble *) p)[0];
1504 params[3] = ((GLint *) p)[3];
1506 params[2] = ((GLint *) p)[2];
1509 params[1] = ((GLint *) p)[1];
1512 params[0] = ((GLint *) p)[0];
1516 for (i = 0; i < v.value_int_n.n; i++)
1517 params[i] = v.value_int_n.ints[i];
1521 params[0] = (GLdouble) (((GLint64 *) p)[0]);
1525 params[0] = *(GLboolean*) p;
1529 m = *(GLmatrix **) p;
1530 for (i = 0; i < 16; i++)
1531 params[i] = m->m[i];
1535 m = *(GLmatrix **) p;
1536 for (i = 0; i < 16; i++)
1537 params[i] = m->m[transpose[i]];
1548 shift = d->type - TYPE_BIT_0;
1549 params[0] = (*(GLbitfield *) p >> shift) & 1;
1554 static enum value_type
1555 find_value_indexed(const char *func, GLenum pname, GLuint index, union value *v)
1557 GET_CURRENT_CONTEXT(ctx);
1562 if (index >= ctx->Const.MaxDrawBuffers)
1564 if (!ctx->Extensions.EXT_draw_buffers2)
1566 v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
1571 case GL_BLEND_SRC_RGB:
1572 if (index >= ctx->Const.MaxDrawBuffers)
1574 if (!ctx->Extensions.ARB_draw_buffers_blend)
1576 v->value_int = ctx->Color.Blend[index].SrcRGB;
1578 case GL_BLEND_SRC_ALPHA:
1579 if (index >= ctx->Const.MaxDrawBuffers)
1581 if (!ctx->Extensions.ARB_draw_buffers_blend)
1583 v->value_int = ctx->Color.Blend[index].SrcA;
1587 case GL_BLEND_DST_RGB:
1588 if (index >= ctx->Const.MaxDrawBuffers)
1590 if (!ctx->Extensions.ARB_draw_buffers_blend)
1592 v->value_int = ctx->Color.Blend[index].DstRGB;
1594 case GL_BLEND_DST_ALPHA:
1595 if (index >= ctx->Const.MaxDrawBuffers)
1597 if (!ctx->Extensions.ARB_draw_buffers_blend)
1599 v->value_int = ctx->Color.Blend[index].DstA;
1601 case GL_BLEND_EQUATION_RGB:
1602 if (index >= ctx->Const.MaxDrawBuffers)
1604 if (!ctx->Extensions.ARB_draw_buffers_blend)
1606 v->value_int = ctx->Color.Blend[index].EquationRGB;
1608 case GL_BLEND_EQUATION_ALPHA:
1609 if (index >= ctx->Const.MaxDrawBuffers)
1611 if (!ctx->Extensions.ARB_draw_buffers_blend)
1613 v->value_int = ctx->Color.Blend[index].EquationA;
1616 case GL_COLOR_WRITEMASK:
1617 if (index >= ctx->Const.MaxDrawBuffers)
1619 if (!ctx->Extensions.EXT_draw_buffers2)
1621 v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
1622 v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
1623 v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
1624 v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
1627 case GL_TRANSFORM_FEEDBACK_BUFFER_START:
1628 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1630 if (!ctx->Extensions.EXT_transform_feedback)
1632 v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
1635 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
1636 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1638 if (!ctx->Extensions.EXT_transform_feedback)
1641 = ctx->TransformFeedback.CurrentObject->RequestedSize[index];
1644 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
1645 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1647 if (!ctx->Extensions.EXT_transform_feedback)
1649 v->value_int = ctx->TransformFeedback.CurrentObject->BufferNames[index];
1652 case GL_UNIFORM_BUFFER_BINDING:
1653 if (index >= ctx->Const.MaxUniformBufferBindings)
1655 if (!ctx->Extensions.ARB_uniform_buffer_object)
1657 v->value_int = ctx->UniformBufferBindings[index].BufferObject->Name;
1660 case GL_UNIFORM_BUFFER_START:
1661 if (index >= ctx->Const.MaxUniformBufferBindings)
1663 if (!ctx->Extensions.ARB_uniform_buffer_object)
1665 v->value_int = ctx->UniformBufferBindings[index].Offset;
1668 case GL_UNIFORM_BUFFER_SIZE:
1669 if (index >= ctx->Const.MaxUniformBufferBindings)
1671 if (!ctx->Extensions.ARB_uniform_buffer_object)
1673 v->value_int = ctx->UniformBufferBindings[index].Size;
1676 /* ARB_texture_multisample / GL3.2 */
1677 case GL_SAMPLE_MASK_VALUE:
1680 if (!ctx->Extensions.ARB_texture_multisample)
1682 v->value_int = ctx->Multisample.SampleMaskValue;
1687 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1688 _mesa_lookup_enum_by_nr(pname));
1689 return TYPE_INVALID;
1691 _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
1692 _mesa_lookup_enum_by_nr(pname));
1693 return TYPE_INVALID;
1697 _mesa_GetBooleani_v( GLenum pname, GLuint index, GLboolean *params )
1700 enum value_type type =
1701 find_value_indexed("glGetBooleani_v", pname, index, &v);
1705 params[0] = INT_TO_BOOLEAN(v.value_int);
1708 params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
1709 params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
1710 params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
1711 params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
1714 params[0] = INT64_TO_BOOLEAN(v.value_int);
1717 ; /* nothing - GL error was recorded */
1722 _mesa_GetIntegeri_v( GLenum pname, GLuint index, GLint *params )
1725 enum value_type type =
1726 find_value_indexed("glGetIntegeri_v", pname, index, &v);
1730 params[0] = v.value_int;
1733 params[0] = v.value_int_4[0];
1734 params[1] = v.value_int_4[1];
1735 params[2] = v.value_int_4[2];
1736 params[3] = v.value_int_4[3];
1739 params[0] = INT64_TO_INT(v.value_int);
1742 ; /* nothing - GL error was recorded */
1747 _mesa_GetInteger64i_v( GLenum pname, GLuint index, GLint64 *params )
1750 enum value_type type =
1751 find_value_indexed("glGetInteger64i_v", pname, index, &v);
1755 params[0] = v.value_int;
1758 params[0] = v.value_int_4[0];
1759 params[1] = v.value_int_4[1];
1760 params[2] = v.value_int_4[2];
1761 params[3] = v.value_int_4[3];
1764 params[0] = v.value_int;
1767 ; /* nothing - GL error was recorded */
1772 _mesa_GetFixedv(GLenum pname, GLfixed *params)
1774 const struct value_desc *d;
1780 d = find_value("glGetDoublev", pname, &p, &v);
1785 params[0] = INT_TO_FIXED(d->offset);
1790 params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
1793 params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
1796 params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
1799 params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
1803 params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
1807 params[3] = INT_TO_FIXED(((GLint *) p)[3]);
1809 params[2] = INT_TO_FIXED(((GLint *) p)[2]);
1812 params[1] = INT_TO_FIXED(((GLint *) p)[1]);
1815 params[0] = INT_TO_FIXED(((GLint *) p)[0]);
1819 for (i = 0; i < v.value_int_n.n; i++)
1820 params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
1824 params[0] = ((GLint64 *) p)[0];
1828 params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
1832 m = *(GLmatrix **) p;
1833 for (i = 0; i < 16; i++)
1834 params[i] = FLOAT_TO_FIXED(m->m[i]);
1838 m = *(GLmatrix **) p;
1839 for (i = 0; i < 16; i++)
1840 params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
1851 shift = d->type - TYPE_BIT_0;
1852 params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);