2 * Copyright (C) 2010 Brian Paul All Rights Reserved.
3 * Copyright (C) 2010 Intel Corporation
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
12 * The above copyright notice and this permission notice shall be included
13 * in all copies or substantial portions of the Software.
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
19 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
20 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
21 * OTHER DEALINGS IN THE SOFTWARE.
23 * Author: Kristian Høgsberg <krh@bitplanet.net>
31 #include "extensions.h"
36 #include "texcompress.h"
37 #include "framebuffer.h"
38 #include "samplerobj.h"
41 /* This is a table driven implemetation of the glGet*v() functions.
42 * The basic idea is that most getters just look up an int somewhere
43 * in struct gl_context and then convert it to a bool or float according to
44 * which of glGetIntegerv() glGetBooleanv() etc is being called.
45 * Instead of generating code to do this, we can just record the enum
46 * value and the offset into struct gl_context in an array of structs. Then
47 * in glGet*(), we lookup the struct for the enum in question, and use
48 * the offset to get the int we need.
50 * Sometimes we need to look up a float, a boolean, a bit in a
51 * bitfield, a matrix or other types instead, so we need to track the
52 * type of the value in struct gl_context. And sometimes the value isn't in
53 * struct gl_context but in the drawbuffer, the array object, current texture
54 * unit, or maybe it's a computed value. So we need to also track
55 * where or how to find the value. Finally, we sometimes need to
56 * check that one of a number of extensions are enabled, the GL
57 * version or flush or call _mesa_update_state(). This is done by
58 * attaching optional extra information to the value description
59 * struct, it's sort of like an array of opcodes that describe extra
62 * Putting all this together we end up with struct value_desc below,
63 * and with a couple of macros to help, the table of struct value_desc
64 * is about as concise as the specification in the old python script.
67 #define FLOAT_TO_BOOLEAN(X) ( (X) ? GL_TRUE : GL_FALSE )
68 #define FLOAT_TO_FIXED(F) ( ((F) * 65536.0f > INT_MAX) ? INT_MAX : \
69 ((F) * 65536.0f < INT_MIN) ? INT_MIN : \
70 (GLint) ((F) * 65536.0f) )
72 #define INT_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
73 #define INT_TO_FIXED(I) ( ((I) > SHRT_MAX) ? INT_MAX : \
74 ((I) < SHRT_MIN) ? INT_MIN : \
75 (GLint) ((I) * 65536) )
77 #define INT64_TO_BOOLEAN(I) ( (I) ? GL_TRUE : GL_FALSE )
78 #define INT64_TO_INT(I) ( (GLint)((I > INT_MAX) ? INT_MAX : ((I < INT_MIN) ? INT_MIN : (I))) )
80 #define BOOLEAN_TO_INT(B) ( (GLint) (B) )
81 #define BOOLEAN_TO_INT64(B) ( (GLint64) (B) )
82 #define BOOLEAN_TO_FLOAT(B) ( (B) ? 1.0F : 0.0F )
83 #define BOOLEAN_TO_FIXED(B) ( (GLint) ((B) ? 1 : 0) << 16 )
85 #define ENUM_TO_INT64(E) ( (GLint64) (E) )
86 #define ENUM_TO_FIXED(E) (E)
121 enum value_location {
139 EXTRA_NEW_FRAG_CLAMP,
140 EXTRA_VALID_DRAW_BUFFER,
141 EXTRA_VALID_TEXTURE_UNIT,
142 EXTRA_VALID_CLIP_DISTANCE,
148 #define NO_EXTRA NULL
153 GLubyte location; /**< enum value_location */
154 GLubyte type; /**< enum value_type */
161 GLfloat value_float_4[4];
162 GLmatrix *value_matrix;
164 GLint value_int_4[4];
168 /* Sigh, see GL_COMPRESSED_TEXTURE_FORMATS_ARB handling */
172 GLboolean value_bool;
175 #define BUFFER_FIELD(field, type) \
176 LOC_BUFFER, type, offsetof(struct gl_framebuffer, field)
177 #define CONTEXT_FIELD(field, type) \
178 LOC_CONTEXT, type, offsetof(struct gl_context, field)
179 #define ARRAY_FIELD(field, type) \
180 LOC_ARRAY, type, offsetof(struct gl_array_object, field)
181 #undef CONST /* already defined through windows.h */
182 #define CONST(value) \
183 LOC_CONTEXT, TYPE_CONST, value
185 #define BUFFER_INT(field) BUFFER_FIELD(field, TYPE_INT)
186 #define BUFFER_ENUM(field) BUFFER_FIELD(field, TYPE_ENUM)
187 #define BUFFER_BOOL(field) BUFFER_FIELD(field, TYPE_BOOLEAN)
189 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
190 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
191 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
192 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
193 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
194 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
195 #define CONTEXT_BIT0(field) CONTEXT_FIELD(field, TYPE_BIT_0)
196 #define CONTEXT_BIT1(field) CONTEXT_FIELD(field, TYPE_BIT_1)
197 #define CONTEXT_BIT2(field) CONTEXT_FIELD(field, TYPE_BIT_2)
198 #define CONTEXT_BIT3(field) CONTEXT_FIELD(field, TYPE_BIT_3)
199 #define CONTEXT_BIT4(field) CONTEXT_FIELD(field, TYPE_BIT_4)
200 #define CONTEXT_BIT5(field) CONTEXT_FIELD(field, TYPE_BIT_5)
201 #define CONTEXT_BIT6(field) CONTEXT_FIELD(field, TYPE_BIT_6)
202 #define CONTEXT_BIT7(field) CONTEXT_FIELD(field, TYPE_BIT_7)
203 #define CONTEXT_FLOAT(field) CONTEXT_FIELD(field, TYPE_FLOAT)
204 #define CONTEXT_FLOAT2(field) CONTEXT_FIELD(field, TYPE_FLOAT_2)
205 #define CONTEXT_FLOAT3(field) CONTEXT_FIELD(field, TYPE_FLOAT_3)
206 #define CONTEXT_FLOAT4(field) CONTEXT_FIELD(field, TYPE_FLOAT_4)
207 #define CONTEXT_MATRIX(field) CONTEXT_FIELD(field, TYPE_MATRIX)
208 #define CONTEXT_MATRIX_T(field) CONTEXT_FIELD(field, TYPE_MATRIX_T)
210 #define ARRAY_INT(field) ARRAY_FIELD(field, TYPE_INT)
211 #define ARRAY_ENUM(field) ARRAY_FIELD(field, TYPE_ENUM)
212 #define ARRAY_BOOL(field) ARRAY_FIELD(field, TYPE_BOOLEAN)
215 offsetof(struct gl_extensions, f)
217 #define EXTRA_EXT(e) \
218 static const int extra_##e[] = { \
222 #define EXTRA_EXT2(e1, e2) \
223 static const int extra_##e1##_##e2[] = { \
224 EXT(e1), EXT(e2), EXTRA_END \
227 /* The 'extra' mechanism is a way to specify extra checks (such as
228 * extensions or specific gl versions) or actions (flush current, new
229 * buffers) that we need to do before looking up an enum. We need to
230 * declare them all up front so we can refer to them in the value_desc
233 * Each EXTRA_ will be executed. For EXTRA_* enums of extensions and API
234 * versions, listing multiple ones in an array means an error will be thrown
235 * only if none of them are available. If you need to check for "AND"
236 * behavior, you would need to make a custom EXTRA_ enum.
239 static const int extra_new_buffers[] = {
244 static const int extra_new_frag_clamp[] = {
245 EXTRA_NEW_FRAG_CLAMP,
249 static const int extra_valid_draw_buffer[] = {
250 EXTRA_VALID_DRAW_BUFFER,
254 static const int extra_valid_texture_unit[] = {
255 EXTRA_VALID_TEXTURE_UNIT,
259 static const int extra_valid_clip_distance[] = {
260 EXTRA_VALID_CLIP_DISTANCE,
264 static const int extra_flush_current_valid_texture_unit[] = {
266 EXTRA_VALID_TEXTURE_UNIT,
270 static const int extra_flush_current[] = {
275 static const int extra_EXT_secondary_color_flush_current[] = {
276 EXT(EXT_secondary_color),
281 static const int extra_EXT_fog_coord_flush_current[] = {
287 static const int extra_EXT_texture_integer[] = {
288 EXT(EXT_texture_integer),
292 static const int extra_EXT_texture_integer_and_new_buffers[] = {
293 EXT(EXT_texture_integer),
298 static const int extra_GLSL_130_es3[] = {
304 static const int extra_texture_buffer_object[] = {
307 EXT(ARB_texture_buffer_object),
311 static const int extra_ARB_transform_feedback2_api_es3[] = {
312 EXT(ARB_transform_feedback2),
317 static const int extra_ARB_uniform_buffer_object_and_geometry_shader[] = {
322 static const int extra_ARB_ES2_compatibility_api_es2[] = {
323 EXT(ARB_ES2_compatibility),
328 static const int extra_ARB_ES3_compatibility_api_es3[] = {
329 EXT(ARB_ES3_compatibility),
334 static const int extra_EXT_framebuffer_sRGB_and_new_buffers[] = {
335 EXT(EXT_framebuffer_sRGB),
340 static const int extra_MESA_texture_array_es3[] = {
341 EXT(MESA_texture_array),
346 EXTRA_EXT(ARB_texture_cube_map);
347 EXTRA_EXT(MESA_texture_array);
348 EXTRA_EXT2(EXT_secondary_color, ARB_vertex_program);
349 EXTRA_EXT(EXT_secondary_color);
350 EXTRA_EXT(EXT_fog_coord);
351 EXTRA_EXT(NV_fog_distance);
352 EXTRA_EXT(EXT_texture_filter_anisotropic);
353 EXTRA_EXT(NV_point_sprite);
354 EXTRA_EXT(NV_texture_rectangle);
355 EXTRA_EXT(EXT_stencil_two_side);
356 EXTRA_EXT(EXT_depth_bounds_test);
357 EXTRA_EXT(ARB_depth_clamp);
358 EXTRA_EXT(ATI_fragment_shader);
359 EXTRA_EXT(EXT_framebuffer_blit);
360 EXTRA_EXT(ARB_shader_objects);
361 EXTRA_EXT(EXT_provoking_vertex);
362 EXTRA_EXT(ARB_fragment_shader);
363 EXTRA_EXT(ARB_fragment_program);
364 EXTRA_EXT2(ARB_framebuffer_object, EXT_framebuffer_multisample);
365 EXTRA_EXT(EXT_framebuffer_object);
366 EXTRA_EXT(ARB_seamless_cube_map);
368 EXTRA_EXT(ARB_vertex_shader);
369 EXTRA_EXT(EXT_transform_feedback);
370 EXTRA_EXT(ARB_transform_feedback3);
371 EXTRA_EXT(EXT_pixel_buffer_object);
372 EXTRA_EXT(ARB_vertex_program);
373 EXTRA_EXT2(NV_point_sprite, ARB_point_sprite);
374 EXTRA_EXT2(ARB_vertex_program, ARB_fragment_program);
375 EXTRA_EXT(ARB_geometry_shader4);
376 EXTRA_EXT(ARB_color_buffer_float);
377 EXTRA_EXT(EXT_framebuffer_sRGB);
378 EXTRA_EXT(OES_EGL_image_external);
379 EXTRA_EXT(ARB_blend_func_extended);
380 EXTRA_EXT(ARB_uniform_buffer_object);
381 EXTRA_EXT(ARB_timer_query);
382 EXTRA_EXT(ARB_map_buffer_alignment);
383 EXTRA_EXT(ARB_texture_cube_map_array);
384 EXTRA_EXT(ARB_texture_buffer_range);
385 EXTRA_EXT(ARB_texture_multisample);
388 extra_ARB_color_buffer_float_or_glcore[] = {
389 EXT(ARB_color_buffer_float),
395 extra_NV_primitive_restart[] = {
396 EXT(NV_primitive_restart),
400 static const int extra_version_30[] = { EXTRA_VERSION_30, EXTRA_END };
401 static const int extra_version_31[] = { EXTRA_VERSION_31, EXTRA_END };
402 static const int extra_version_32[] = { EXTRA_VERSION_32, EXTRA_END };
404 static const int extra_gl30_es3[] = {
410 static const int extra_gl32_es3[] = {
417 extra_ARB_vertex_program_api_es2[] = {
418 EXT(ARB_vertex_program),
423 /* The ReadBuffer get token is valid under either full GL or under
424 * GLES2 if the NV_read_buffer extension is available. */
426 extra_NV_read_buffer_api_gl[] = {
432 static const int extra_core_ARB_color_buffer_float_and_new_buffers[] = {
434 EXT(ARB_color_buffer_float),
439 /* This is the big table describing all the enums we accept in
440 * glGet*v(). The table is partitioned into six parts: enums
441 * understood by all GL APIs (OpenGL, GLES and GLES2), enums shared
442 * between OpenGL and GLES, enums exclusive to GLES, etc for the
443 * remaining combinations. To look up the enums valid in a given API
444 * we will use a hash table specific to that API. These tables are in
445 * turn generated at build time and included through get_hash.h.
448 #include "get_hash.h"
450 /* All we need now is a way to look up the value struct from the enum.
451 * The code generated by gcc for the old generated big switch
452 * statement is a big, balanced, open coded if/else tree, essentially
453 * an unrolled binary search. It would be natural to sort the new
454 * enum table and use bsearch(), but we will use a read-only hash
455 * table instead. bsearch() has a nice guaranteed worst case
456 * performance, but we're also guaranteed to hit that worst case
457 * (log2(n) iterations) for about half the enums. Instead, using an
458 * open addressing hash table, we can find the enum on the first try
459 * for 80% of the enums, 1 collision for 10% and never more than 5
460 * collisions for any enum (typical numbers). And the code is very
461 * simple, even though it feels a little magic. */
465 print_table_stats(int api)
467 int i, j, collisions[11], count, hash, mask;
468 const struct value_desc *d;
469 const char *api_names[] = {
470 [API_OPENGL_COMPAT] = "GL",
471 [API_OPENGL_CORE] = "GL_CORE",
472 [API_OPENGLES] = "GLES",
473 [API_OPENGLES2] = "GLES2",
475 const char *api_name;
477 api_name = api < Elements(api_names) ? api_names[api] : "N/A";
479 mask = Elements(table(api)) - 1;
480 memset(collisions, 0, sizeof collisions);
482 for (i = 0; i < Elements(table(api)); i++) {
486 d = &values[table(api)[i]];
487 hash = (d->pname * prime_factor);
490 if (values[table(api)[hash & mask]].pname == d->pname)
502 printf("number of enums for %s: %d (total %ld)\n",
503 api_name, count, Elements(values));
504 for (i = 0; i < Elements(collisions) - 1; i++)
505 if (collisions[i] > 0)
506 printf(" %d enums with %d %scollisions\n",
507 collisions[i], i, i == 10 ? "or more " : "");
512 * Initialize the enum hash for a given API
514 * This is called from one_time_init() to insert the enum values that
515 * are valid for the API in question into the enum hash table.
517 * \param the current context, for determining the API in question
519 void _mesa_init_get_hash(struct gl_context *ctx)
527 * Handle irregular enums
529 * Some values don't conform to the "well-known type at context
530 * pointer + offset" pattern, so we have this function to catch all
531 * the corner cases. Typically, it's a computed value or a one-off
532 * pointer to a custom struct or something.
534 * In this case we can't return a pointer to the value, so we'll have
535 * to use the temporary variable 'v' declared back in the calling
536 * glGet*v() function to store the result.
538 * \param ctx the current context
539 * \param d the struct value_desc that describes the enum
540 * \param v pointer to the tmp declared in the calling glGet*v() function
543 find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
545 struct gl_buffer_object **buffer_obj;
546 struct gl_client_array *array;
550 case GL_MAJOR_VERSION:
551 v->value_int = ctx->Version / 10;
553 case GL_MINOR_VERSION:
554 v->value_int = ctx->Version % 10;
560 case GL_TEXTURE_1D_ARRAY_EXT:
561 case GL_TEXTURE_2D_ARRAY_EXT:
562 case GL_TEXTURE_CUBE_MAP_ARB:
563 case GL_TEXTURE_RECTANGLE_NV:
564 case GL_TEXTURE_EXTERNAL_OES:
565 v->value_bool = _mesa_IsEnabled(d->pname);
568 case GL_LINE_STIPPLE_PATTERN:
569 /* This is the only GLushort, special case it here by promoting
570 * to an int rather than introducing a new type. */
571 v->value_int = ctx->Line.StipplePattern;
574 case GL_CURRENT_RASTER_TEXTURE_COORDS:
575 unit = ctx->Texture.CurrentUnit;
576 v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
577 v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
578 v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
579 v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
582 case GL_CURRENT_TEXTURE_COORDS:
583 unit = ctx->Texture.CurrentUnit;
584 v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
585 v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
586 v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
587 v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
590 case GL_COLOR_WRITEMASK:
591 v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
592 v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
593 v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
594 v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
598 v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
602 v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
605 case GL_MAP2_GRID_DOMAIN:
606 v->value_float_4[0] = ctx->Eval.MapGrid2u1;
607 v->value_float_4[1] = ctx->Eval.MapGrid2u2;
608 v->value_float_4[2] = ctx->Eval.MapGrid2v1;
609 v->value_float_4[3] = ctx->Eval.MapGrid2v2;
612 case GL_TEXTURE_STACK_DEPTH:
613 unit = ctx->Texture.CurrentUnit;
614 v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
616 case GL_TEXTURE_MATRIX:
617 unit = ctx->Texture.CurrentUnit;
618 v->value_matrix = ctx->TextureMatrixStack[unit].Top;
621 case GL_TEXTURE_COORD_ARRAY:
622 case GL_TEXTURE_COORD_ARRAY_SIZE:
623 case GL_TEXTURE_COORD_ARRAY_TYPE:
624 case GL_TEXTURE_COORD_ARRAY_STRIDE:
625 array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)];
626 v->value_int = *(GLuint *) ((char *) array + d->offset);
629 case GL_ACTIVE_TEXTURE_ARB:
630 v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
632 case GL_CLIENT_ACTIVE_TEXTURE_ARB:
633 v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
636 case GL_MODELVIEW_STACK_DEPTH:
637 case GL_PROJECTION_STACK_DEPTH:
638 v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
641 case GL_MAX_TEXTURE_SIZE:
642 case GL_MAX_3D_TEXTURE_SIZE:
643 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
644 p = (GLuint *) ((char *) ctx + d->offset);
645 v->value_int = 1 << (*p - 1);
649 v->value_int_4[0] = ctx->Scissor.X;
650 v->value_int_4[1] = ctx->Scissor.Y;
651 v->value_int_4[2] = ctx->Scissor.Width;
652 v->value_int_4[3] = ctx->Scissor.Height;
657 ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
660 if (!ctx->CompileFlag)
662 else if (ctx->ExecuteFlag)
663 v->value_enum = GL_COMPILE_AND_EXECUTE;
665 v->value_enum = GL_COMPILE;
669 v->value_int_4[0] = ctx->Viewport.X;
670 v->value_int_4[1] = ctx->Viewport.Y;
671 v->value_int_4[2] = ctx->Viewport.Width;
672 v->value_int_4[3] = ctx->Viewport.Height;
675 case GL_ACTIVE_STENCIL_FACE_EXT:
676 v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
679 case GL_STENCIL_FAIL:
680 v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
682 case GL_STENCIL_FUNC:
683 v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
685 case GL_STENCIL_PASS_DEPTH_FAIL:
686 v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
688 case GL_STENCIL_PASS_DEPTH_PASS:
689 v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
692 v->value_int = _mesa_get_stencil_ref(ctx, ctx->Stencil.ActiveFace);
694 case GL_STENCIL_BACK_REF:
695 v->value_int = _mesa_get_stencil_ref(ctx, 1);
697 case GL_STENCIL_VALUE_MASK:
698 v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
700 case GL_STENCIL_WRITEMASK:
701 v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
704 case GL_NUM_EXTENSIONS:
705 v->value_int = _mesa_get_extension_count(ctx);
708 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
709 v->value_int = _mesa_get_color_read_type(ctx);
711 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
712 v->value_int = _mesa_get_color_read_format(ctx);
715 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
716 v->value_int = ctx->CurrentStack->Depth + 1;
718 case GL_CURRENT_MATRIX_ARB:
719 case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
720 v->value_matrix = ctx->CurrentStack->Top;
723 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
724 v->value_int = _mesa_get_compressed_formats(ctx, NULL);
726 case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
728 _mesa_get_compressed_formats(ctx, v->value_int_n.ints);
729 ASSERT(v->value_int_n.n <= 100);
732 case GL_MAX_VARYING_FLOATS_ARB:
733 case GL_MAX_FRAGMENT_INPUT_COMPONENTS:
734 v->value_int = ctx->Const.MaxVarying * 4;
737 /* Various object names */
739 case GL_TEXTURE_BINDING_1D:
740 case GL_TEXTURE_BINDING_2D:
741 case GL_TEXTURE_BINDING_3D:
742 case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
743 case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
744 case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
745 case GL_TEXTURE_BINDING_RECTANGLE_NV:
746 case GL_TEXTURE_BINDING_EXTERNAL_OES:
747 case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY:
748 case GL_TEXTURE_BINDING_2D_MULTISAMPLE:
749 case GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY:
750 unit = ctx->Texture.CurrentUnit;
752 ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
755 /* GL_ARB_vertex_buffer_object */
756 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
757 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
758 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
759 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
760 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
761 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
762 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
763 buffer_obj = (struct gl_buffer_object **)
764 ((char *) ctx->Array.ArrayObj + d->offset);
765 v->value_int = (*buffer_obj)->Name;
767 case GL_ARRAY_BUFFER_BINDING_ARB:
768 v->value_int = ctx->Array.ArrayBufferObj->Name;
770 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
772 ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj->Name;
774 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
775 v->value_int = ctx->Array.ArrayObj->ElementArrayBufferObj->Name;
778 /* ARB_copy_buffer */
779 case GL_COPY_READ_BUFFER:
780 v->value_int = ctx->CopyReadBuffer->Name;
782 case GL_COPY_WRITE_BUFFER:
783 v->value_int = ctx->CopyWriteBuffer->Name;
786 case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
787 v->value_int = ctx->Pack.BufferObj->Name;
789 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
790 v->value_int = ctx->Unpack.BufferObj->Name;
792 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
793 v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
795 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
796 v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
798 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
799 v->value_int = ctx->TransformFeedback.CurrentObject->Active;
801 case GL_TRANSFORM_FEEDBACK_BINDING:
802 v->value_int = ctx->TransformFeedback.CurrentObject->Name;
804 case GL_CURRENT_PROGRAM:
806 ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
808 case GL_READ_FRAMEBUFFER_BINDING_EXT:
809 v->value_int = ctx->ReadBuffer->Name;
811 case GL_RENDERBUFFER_BINDING_EXT:
813 ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
815 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
816 v->value_int = ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].BufferObj->Name;
820 if (_mesa_get_clamp_fragment_color(ctx))
821 COPY_4FV(v->value_float_4, ctx->Fog.Color);
823 COPY_4FV(v->value_float_4, ctx->Fog.ColorUnclamped);
825 case GL_COLOR_CLEAR_VALUE:
826 if (_mesa_get_clamp_fragment_color(ctx)) {
827 v->value_float_4[0] = CLAMP(ctx->Color.ClearColor.f[0], 0.0F, 1.0F);
828 v->value_float_4[1] = CLAMP(ctx->Color.ClearColor.f[1], 0.0F, 1.0F);
829 v->value_float_4[2] = CLAMP(ctx->Color.ClearColor.f[2], 0.0F, 1.0F);
830 v->value_float_4[3] = CLAMP(ctx->Color.ClearColor.f[3], 0.0F, 1.0F);
832 COPY_4FV(v->value_float_4, ctx->Color.ClearColor.f);
834 case GL_BLEND_COLOR_EXT:
835 if (_mesa_get_clamp_fragment_color(ctx))
836 COPY_4FV(v->value_float_4, ctx->Color.BlendColor);
838 COPY_4FV(v->value_float_4, ctx->Color.BlendColorUnclamped);
840 case GL_ALPHA_TEST_REF:
841 if (_mesa_get_clamp_fragment_color(ctx))
842 v->value_float = ctx->Color.AlphaRef;
844 v->value_float = ctx->Color.AlphaRefUnclamped;
846 case GL_MAX_VERTEX_UNIFORM_VECTORS:
847 v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;
850 case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
851 v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
854 /* GL_ARB_texture_buffer_object */
855 case GL_TEXTURE_BUFFER_ARB:
856 v->value_int = ctx->Texture.BufferObject->Name;
858 case GL_TEXTURE_BINDING_BUFFER_ARB:
859 unit = ctx->Texture.CurrentUnit;
861 ctx->Texture.Unit[unit].CurrentTex[TEXTURE_BUFFER_INDEX]->Name;
863 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB:
865 struct gl_buffer_object *buf =
866 ctx->Texture.Unit[ctx->Texture.CurrentUnit]
867 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObject;
868 v->value_int = buf ? buf->Name : 0;
871 case GL_TEXTURE_BUFFER_FORMAT_ARB:
872 v->value_int = ctx->Texture.Unit[ctx->Texture.CurrentUnit]
873 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObjectFormat;
876 /* GL_ARB_sampler_objects */
877 case GL_SAMPLER_BINDING:
879 struct gl_sampler_object *samp =
880 ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler;
883 * The sampler object may have been deleted on another context,
884 * so we try to lookup the sampler object before returning its Name.
886 if (samp && _mesa_lookup_samplerobj(ctx, samp->Name)) {
887 v->value_int = samp->Name;
893 /* GL_ARB_uniform_buffer_object */
894 case GL_UNIFORM_BUFFER_BINDING:
895 v->value_int = ctx->UniformBuffer->Name;
897 /* GL_ARB_timer_query */
899 if (ctx->Driver.GetTimestamp) {
900 v->value_int64 = ctx->Driver.GetTimestamp(ctx);
903 _mesa_problem(ctx, "driver doesn't implement GetTimestamp");
910 * Check extra constraints on a struct value_desc descriptor
912 * If a struct value_desc has a non-NULL extra pointer, it means that
913 * there are a number of extra constraints to check or actions to
914 * perform. The extras is just an integer array where each integer
915 * encode different constraints or actions.
917 * \param ctx current context
918 * \param func name of calling glGet*v() function for error reporting
919 * \param d the struct value_desc that has the extra constraints
921 * \return GL_FALSE if all of the constraints were not satisfied,
925 check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
927 const GLuint version = ctx->Version;
928 GLboolean api_check = GL_FALSE;
929 GLboolean api_found = GL_FALSE;
932 for (e = d->extra; *e != EXTRA_END; e++) {
934 case EXTRA_VERSION_30:
939 case EXTRA_VERSION_31:
944 case EXTRA_VERSION_32:
949 case EXTRA_NEW_FRAG_CLAMP:
950 if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
951 _mesa_update_state(ctx);
955 if (ctx->API == API_OPENGLES2)
960 if (_mesa_is_gles3(ctx))
965 if (_mesa_is_desktop_gl(ctx))
968 case EXTRA_API_GL_CORE:
970 if (ctx->API == API_OPENGL_CORE)
973 case EXTRA_NEW_BUFFERS:
974 if (ctx->NewState & _NEW_BUFFERS)
975 _mesa_update_state(ctx);
977 case EXTRA_FLUSH_CURRENT:
978 FLUSH_CURRENT(ctx, 0);
980 case EXTRA_VALID_DRAW_BUFFER:
981 if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
982 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
983 func, d->pname - GL_DRAW_BUFFER0_ARB);
987 case EXTRA_VALID_TEXTURE_UNIT:
988 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
989 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
990 func, ctx->Texture.CurrentUnit);
994 case EXTRA_VALID_CLIP_DISTANCE:
995 if (d->pname - GL_CLIP_DISTANCE0 >= ctx->Const.MaxClipPlanes) {
996 _mesa_error(ctx, GL_INVALID_ENUM, "%s(clip distance %u)",
997 func, d->pname - GL_CLIP_DISTANCE0);
1001 case EXTRA_GLSL_130:
1002 api_check = GL_TRUE;
1003 if (ctx->Const.GLSLVersion >= 130)
1004 api_found = GL_TRUE;
1006 case EXTRA_EXT_UBO_GS4:
1007 api_check = GL_TRUE;
1008 api_found = (ctx->Extensions.ARB_uniform_buffer_object &&
1009 ctx->Extensions.ARB_geometry_shader4);
1013 default: /* *e is a offset into the extension struct */
1014 api_check = GL_TRUE;
1015 if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
1016 api_found = GL_TRUE;
1021 if (api_check && !api_found) {
1022 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1023 _mesa_lookup_enum_by_nr(d->pname));
1030 static const struct value_desc error_value =
1031 { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
1034 * Find the struct value_desc corresponding to the enum 'pname'.
1036 * We hash the enum value to get an index into the 'table' array,
1037 * which holds the index in the 'values' array of struct value_desc.
1038 * Once we've found the entry, we do the extra checks, if any, then
1039 * look up the value and return a pointer to it.
1041 * If the value has to be computed (for example, it's the result of a
1042 * function call or we need to add 1 to it), we use the tmp 'v' to
1045 * \param func name of glGet*v() func for error reporting
1046 * \param pname the enum value we're looking up
1047 * \param p is were we return the pointer to the value
1048 * \param v a tmp union value variable in the calling glGet*v() function
1050 * \return the struct value_desc corresponding to the enum or a struct
1051 * value_desc of TYPE_INVALID if not found. This lets the calling
1052 * glGet*v() function jump right into a switch statement and
1053 * handle errors there instead of having to check for NULL.
1055 static const struct value_desc *
1056 find_value(const char *func, GLenum pname, void **p, union value *v)
1058 GET_CURRENT_CONTEXT(ctx);
1059 struct gl_texture_unit *unit;
1061 const struct value_desc *d;
1065 /* We index into the table_set[] list of per-API hash tables using the API's
1066 * value in the gl_api enum. Since GLES 3 doesn't have an API_OPENGL* enum
1067 * value since it's compatible with GLES2 its entry in table_set[] is at the
1070 STATIC_ASSERT(Elements(table_set) == API_OPENGL_LAST + 2);
1071 if (_mesa_is_gles3(ctx)) {
1072 api = API_OPENGL_LAST + 1;
1074 mask = Elements(table(api)) - 1;
1075 hash = (pname * prime_factor);
1077 int idx = table(api)[hash & mask];
1079 /* If the enum isn't valid, the hash walk ends with index 0,
1080 * pointing to the first entry of values[] which doesn't hold
1081 * any valid enum. */
1082 if (unlikely(idx == 0)) {
1083 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1084 _mesa_lookup_enum_by_nr(pname));
1085 return &error_value;
1089 if (likely(d->pname == pname))
1095 if (unlikely(d->extra && !check_extra(ctx, func, d)))
1096 return &error_value;
1098 switch (d->location) {
1100 *p = ((char *) ctx->DrawBuffer + d->offset);
1103 *p = ((char *) ctx + d->offset);
1106 *p = ((char *) ctx->Array.ArrayObj + d->offset);
1109 unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1110 *p = ((char *) unit + d->offset);
1113 find_custom_value(ctx, d, v);
1121 /* silence warning */
1122 return &error_value;
1125 static const int transpose[] = {
1133 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
1135 const struct value_desc *d;
1141 d = find_value("glGetBooleanv", pname, &p, &v);
1146 params[0] = INT_TO_BOOLEAN(d->offset);
1151 params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
1154 params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
1157 params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
1160 params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
1164 params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
1168 params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
1170 params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
1173 params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
1176 params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
1180 for (i = 0; i < v.value_int_n.n; i++)
1181 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1185 params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
1189 params[0] = ((GLboolean*) p)[0];
1193 m = *(GLmatrix **) p;
1194 for (i = 0; i < 16; i++)
1195 params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
1199 m = *(GLmatrix **) p;
1200 for (i = 0; i < 16; i++)
1201 params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
1212 shift = d->type - TYPE_BIT_0;
1213 params[0] = (*(GLbitfield *) p >> shift) & 1;
1219 _mesa_GetFloatv(GLenum pname, GLfloat *params)
1221 const struct value_desc *d;
1227 d = find_value("glGetFloatv", pname, &p, &v);
1232 params[0] = (GLfloat) d->offset;
1237 params[3] = ((GLfloat *) p)[3];
1240 params[2] = ((GLfloat *) p)[2];
1243 params[1] = ((GLfloat *) p)[1];
1246 params[0] = ((GLfloat *) p)[0];
1250 params[0] = (GLfloat) (((GLdouble *) p)[0]);
1254 params[3] = (GLfloat) (((GLint *) p)[3]);
1256 params[2] = (GLfloat) (((GLint *) p)[2]);
1259 params[1] = (GLfloat) (((GLint *) p)[1]);
1262 params[0] = (GLfloat) (((GLint *) p)[0]);
1266 for (i = 0; i < v.value_int_n.n; i++)
1267 params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
1271 params[0] = (GLfloat) (((GLint64 *) p)[0]);
1275 params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
1279 m = *(GLmatrix **) p;
1280 for (i = 0; i < 16; i++)
1281 params[i] = m->m[i];
1285 m = *(GLmatrix **) p;
1286 for (i = 0; i < 16; i++)
1287 params[i] = m->m[transpose[i]];
1298 shift = d->type - TYPE_BIT_0;
1299 params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
1305 _mesa_GetIntegerv(GLenum pname, GLint *params)
1307 const struct value_desc *d;
1313 d = find_value("glGetIntegerv", pname, &p, &v);
1318 params[0] = d->offset;
1322 params[3] = IROUND(((GLfloat *) p)[3]);
1324 params[2] = IROUND(((GLfloat *) p)[2]);
1326 params[1] = IROUND(((GLfloat *) p)[1]);
1328 params[0] = IROUND(((GLfloat *) p)[0]);
1332 params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
1334 params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
1336 params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
1338 params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
1342 params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
1346 params[3] = ((GLint *) p)[3];
1348 params[2] = ((GLint *) p)[2];
1351 params[1] = ((GLint *) p)[1];
1354 params[0] = ((GLint *) p)[0];
1358 for (i = 0; i < v.value_int_n.n; i++)
1359 params[i] = v.value_int_n.ints[i];
1363 params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
1367 params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
1371 m = *(GLmatrix **) p;
1372 for (i = 0; i < 16; i++)
1373 params[i] = FLOAT_TO_INT(m->m[i]);
1377 m = *(GLmatrix **) p;
1378 for (i = 0; i < 16; i++)
1379 params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
1390 shift = d->type - TYPE_BIT_0;
1391 params[0] = (*(GLbitfield *) p >> shift) & 1;
1397 _mesa_GetInteger64v(GLenum pname, GLint64 *params)
1399 const struct value_desc *d;
1405 d = find_value("glGetInteger64v", pname, &p, &v);
1410 params[0] = d->offset;
1414 params[3] = IROUND64(((GLfloat *) p)[3]);
1416 params[2] = IROUND64(((GLfloat *) p)[2]);
1418 params[1] = IROUND64(((GLfloat *) p)[1]);
1420 params[0] = IROUND64(((GLfloat *) p)[0]);
1424 params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
1426 params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
1428 params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
1430 params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
1434 params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
1438 params[3] = ((GLint *) p)[3];
1440 params[2] = ((GLint *) p)[2];
1443 params[1] = ((GLint *) p)[1];
1446 params[0] = ((GLint *) p)[0];
1450 for (i = 0; i < v.value_int_n.n; i++)
1451 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1455 params[0] = ((GLint64 *) p)[0];
1459 params[0] = ((GLboolean*) p)[0];
1463 m = *(GLmatrix **) p;
1464 for (i = 0; i < 16; i++)
1465 params[i] = FLOAT_TO_INT64(m->m[i]);
1469 m = *(GLmatrix **) p;
1470 for (i = 0; i < 16; i++)
1471 params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
1482 shift = d->type - TYPE_BIT_0;
1483 params[0] = (*(GLbitfield *) p >> shift) & 1;
1489 _mesa_GetDoublev(GLenum pname, GLdouble *params)
1491 const struct value_desc *d;
1497 d = find_value("glGetDoublev", pname, &p, &v);
1502 params[0] = d->offset;
1507 params[3] = ((GLfloat *) p)[3];
1510 params[2] = ((GLfloat *) p)[2];
1513 params[1] = ((GLfloat *) p)[1];
1516 params[0] = ((GLfloat *) p)[0];
1520 params[0] = ((GLdouble *) p)[0];
1524 params[3] = ((GLint *) p)[3];
1526 params[2] = ((GLint *) p)[2];
1529 params[1] = ((GLint *) p)[1];
1532 params[0] = ((GLint *) p)[0];
1536 for (i = 0; i < v.value_int_n.n; i++)
1537 params[i] = v.value_int_n.ints[i];
1541 params[0] = (GLdouble) (((GLint64 *) p)[0]);
1545 params[0] = *(GLboolean*) p;
1549 m = *(GLmatrix **) p;
1550 for (i = 0; i < 16; i++)
1551 params[i] = m->m[i];
1555 m = *(GLmatrix **) p;
1556 for (i = 0; i < 16; i++)
1557 params[i] = m->m[transpose[i]];
1568 shift = d->type - TYPE_BIT_0;
1569 params[0] = (*(GLbitfield *) p >> shift) & 1;
1574 static enum value_type
1575 find_value_indexed(const char *func, GLenum pname, GLuint index, union value *v)
1577 GET_CURRENT_CONTEXT(ctx);
1582 if (index >= ctx->Const.MaxDrawBuffers)
1584 if (!ctx->Extensions.EXT_draw_buffers2)
1586 v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
1591 case GL_BLEND_SRC_RGB:
1592 if (index >= ctx->Const.MaxDrawBuffers)
1594 if (!ctx->Extensions.ARB_draw_buffers_blend)
1596 v->value_int = ctx->Color.Blend[index].SrcRGB;
1598 case GL_BLEND_SRC_ALPHA:
1599 if (index >= ctx->Const.MaxDrawBuffers)
1601 if (!ctx->Extensions.ARB_draw_buffers_blend)
1603 v->value_int = ctx->Color.Blend[index].SrcA;
1607 case GL_BLEND_DST_RGB:
1608 if (index >= ctx->Const.MaxDrawBuffers)
1610 if (!ctx->Extensions.ARB_draw_buffers_blend)
1612 v->value_int = ctx->Color.Blend[index].DstRGB;
1614 case GL_BLEND_DST_ALPHA:
1615 if (index >= ctx->Const.MaxDrawBuffers)
1617 if (!ctx->Extensions.ARB_draw_buffers_blend)
1619 v->value_int = ctx->Color.Blend[index].DstA;
1621 case GL_BLEND_EQUATION_RGB:
1622 if (index >= ctx->Const.MaxDrawBuffers)
1624 if (!ctx->Extensions.ARB_draw_buffers_blend)
1626 v->value_int = ctx->Color.Blend[index].EquationRGB;
1628 case GL_BLEND_EQUATION_ALPHA:
1629 if (index >= ctx->Const.MaxDrawBuffers)
1631 if (!ctx->Extensions.ARB_draw_buffers_blend)
1633 v->value_int = ctx->Color.Blend[index].EquationA;
1636 case GL_COLOR_WRITEMASK:
1637 if (index >= ctx->Const.MaxDrawBuffers)
1639 if (!ctx->Extensions.EXT_draw_buffers2)
1641 v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
1642 v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
1643 v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
1644 v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
1647 case GL_TRANSFORM_FEEDBACK_BUFFER_START:
1648 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1650 if (!ctx->Extensions.EXT_transform_feedback)
1652 v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
1655 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
1656 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1658 if (!ctx->Extensions.EXT_transform_feedback)
1661 = ctx->TransformFeedback.CurrentObject->RequestedSize[index];
1664 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
1665 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1667 if (!ctx->Extensions.EXT_transform_feedback)
1669 v->value_int = ctx->TransformFeedback.CurrentObject->BufferNames[index];
1672 case GL_UNIFORM_BUFFER_BINDING:
1673 if (index >= ctx->Const.MaxUniformBufferBindings)
1675 if (!ctx->Extensions.ARB_uniform_buffer_object)
1677 v->value_int = ctx->UniformBufferBindings[index].BufferObject->Name;
1680 case GL_UNIFORM_BUFFER_START:
1681 if (index >= ctx->Const.MaxUniformBufferBindings)
1683 if (!ctx->Extensions.ARB_uniform_buffer_object)
1685 v->value_int = ctx->UniformBufferBindings[index].Offset;
1688 case GL_UNIFORM_BUFFER_SIZE:
1689 if (index >= ctx->Const.MaxUniformBufferBindings)
1691 if (!ctx->Extensions.ARB_uniform_buffer_object)
1693 v->value_int = ctx->UniformBufferBindings[index].Size;
1696 /* ARB_texture_multisample / GL3.2 */
1697 case GL_SAMPLE_MASK_VALUE:
1700 if (!ctx->Extensions.ARB_texture_multisample)
1702 v->value_int = ctx->Multisample.SampleMaskValue;
1707 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1708 _mesa_lookup_enum_by_nr(pname));
1709 return TYPE_INVALID;
1711 _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
1712 _mesa_lookup_enum_by_nr(pname));
1713 return TYPE_INVALID;
1717 _mesa_GetBooleani_v( GLenum pname, GLuint index, GLboolean *params )
1720 enum value_type type =
1721 find_value_indexed("glGetBooleani_v", pname, index, &v);
1725 params[0] = INT_TO_BOOLEAN(v.value_int);
1728 params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
1729 params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
1730 params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
1731 params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
1734 params[0] = INT64_TO_BOOLEAN(v.value_int);
1737 ; /* nothing - GL error was recorded */
1742 _mesa_GetIntegeri_v( GLenum pname, GLuint index, GLint *params )
1745 enum value_type type =
1746 find_value_indexed("glGetIntegeri_v", pname, index, &v);
1750 params[0] = v.value_int;
1753 params[0] = v.value_int_4[0];
1754 params[1] = v.value_int_4[1];
1755 params[2] = v.value_int_4[2];
1756 params[3] = v.value_int_4[3];
1759 params[0] = INT64_TO_INT(v.value_int);
1762 ; /* nothing - GL error was recorded */
1767 _mesa_GetInteger64i_v( GLenum pname, GLuint index, GLint64 *params )
1770 enum value_type type =
1771 find_value_indexed("glGetInteger64i_v", pname, index, &v);
1775 params[0] = v.value_int;
1778 params[0] = v.value_int_4[0];
1779 params[1] = v.value_int_4[1];
1780 params[2] = v.value_int_4[2];
1781 params[3] = v.value_int_4[3];
1784 params[0] = v.value_int;
1787 ; /* nothing - GL error was recorded */
1792 _mesa_GetFixedv(GLenum pname, GLfixed *params)
1794 const struct value_desc *d;
1800 d = find_value("glGetDoublev", pname, &p, &v);
1805 params[0] = INT_TO_FIXED(d->offset);
1810 params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
1813 params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
1816 params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
1819 params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
1823 params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
1827 params[3] = INT_TO_FIXED(((GLint *) p)[3]);
1829 params[2] = INT_TO_FIXED(((GLint *) p)[2]);
1832 params[1] = INT_TO_FIXED(((GLint *) p)[1]);
1835 params[0] = INT_TO_FIXED(((GLint *) p)[0]);
1839 for (i = 0; i < v.value_int_n.n; i++)
1840 params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
1844 params[0] = ((GLint64 *) p)[0];
1848 params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
1852 m = *(GLmatrix **) p;
1853 for (i = 0; i < 16; i++)
1854 params[i] = FLOAT_TO_FIXED(m->m[i]);
1858 m = *(GLmatrix **) p;
1859 for (i = 0; i < 16; i++)
1860 params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
1871 shift = d->type - TYPE_BIT_0;
1872 params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);