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"
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.
428 #include "get_hash.h"
430 /* All we need now is a way to look up the value struct from the enum.
431 * The code generated by gcc for the old generated big switch
432 * statement is a big, balanced, open coded if/else tree, essentially
433 * an unrolled binary search. It would be natural to sort the new
434 * enum table and use bsearch(), but we will use a read-only hash
435 * table instead. bsearch() has a nice guaranteed worst case
436 * performance, but we're also guaranteed to hit that worst case
437 * (log2(n) iterations) for about half the enums. Instead, using an
438 * open addressing hash table, we can find the enum on the first try
439 * for 80% of the enums, 1 collision for 10% and never more than 5
440 * collisions for any enum (typical numbers). And the code is very
441 * simple, even though it feels a little magic. */
445 print_table_stats(int api)
447 int i, j, collisions[11], count, hash, mask;
448 const struct value_desc *d;
449 const char *api_names[] = {
450 [API_OPENGL_COMPAT] = "GL",
451 [API_OPENGL_CORE] = "GL_CORE",
452 [API_OPENGLES] = "GLES",
453 [API_OPENGLES2] = "GLES2",
455 const char *api_name;
457 api_name = api < Elements(api_names) ? api_names[api] : "N/A";
459 mask = Elements(table(api)) - 1;
460 memset(collisions, 0, sizeof collisions);
462 for (i = 0; i < Elements(table(api)); i++) {
466 d = &values[table(api)[i]];
467 hash = (d->pname * prime_factor);
470 if (values[table(api)[hash & mask]].pname == d->pname)
482 printf("number of enums for %s: %d (total %ld)\n",
483 api_name, count, Elements(values));
484 for (i = 0; i < Elements(collisions) - 1; i++)
485 if (collisions[i] > 0)
486 printf(" %d enums with %d %scollisions\n",
487 collisions[i], i, i == 10 ? "or more " : "");
492 * Initialize the enum hash for a given API
494 * This is called from one_time_init() to insert the enum values that
495 * are valid for the API in question into the enum hash table.
497 * \param the current context, for determining the API in question
499 void _mesa_init_get_hash(struct gl_context *ctx)
507 * Handle irregular enums
509 * Some values don't conform to the "well-known type at context
510 * pointer + offset" pattern, so we have this function to catch all
511 * the corner cases. Typically, it's a computed value or a one-off
512 * pointer to a custom struct or something.
514 * In this case we can't return a pointer to the value, so we'll have
515 * to use the temporary variable 'v' declared back in the calling
516 * glGet*v() function to store the result.
518 * \param ctx the current context
519 * \param d the struct value_desc that describes the enum
520 * \param v pointer to the tmp declared in the calling glGet*v() function
523 find_custom_value(struct gl_context *ctx, const struct value_desc *d, union value *v)
525 struct gl_buffer_object **buffer_obj;
526 struct gl_client_array *array;
530 case GL_MAJOR_VERSION:
531 v->value_int = ctx->Version / 10;
533 case GL_MINOR_VERSION:
534 v->value_int = ctx->Version % 10;
540 case GL_TEXTURE_1D_ARRAY_EXT:
541 case GL_TEXTURE_2D_ARRAY_EXT:
542 case GL_TEXTURE_CUBE_MAP_ARB:
543 case GL_TEXTURE_RECTANGLE_NV:
544 case GL_TEXTURE_EXTERNAL_OES:
545 v->value_bool = _mesa_IsEnabled(d->pname);
548 case GL_LINE_STIPPLE_PATTERN:
549 /* This is the only GLushort, special case it here by promoting
550 * to an int rather than introducing a new type. */
551 v->value_int = ctx->Line.StipplePattern;
554 case GL_CURRENT_RASTER_TEXTURE_COORDS:
555 unit = ctx->Texture.CurrentUnit;
556 v->value_float_4[0] = ctx->Current.RasterTexCoords[unit][0];
557 v->value_float_4[1] = ctx->Current.RasterTexCoords[unit][1];
558 v->value_float_4[2] = ctx->Current.RasterTexCoords[unit][2];
559 v->value_float_4[3] = ctx->Current.RasterTexCoords[unit][3];
562 case GL_CURRENT_TEXTURE_COORDS:
563 unit = ctx->Texture.CurrentUnit;
564 v->value_float_4[0] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][0];
565 v->value_float_4[1] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][1];
566 v->value_float_4[2] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][2];
567 v->value_float_4[3] = ctx->Current.Attrib[VERT_ATTRIB_TEX0 + unit][3];
570 case GL_COLOR_WRITEMASK:
571 v->value_int_4[0] = ctx->Color.ColorMask[0][RCOMP] ? 1 : 0;
572 v->value_int_4[1] = ctx->Color.ColorMask[0][GCOMP] ? 1 : 0;
573 v->value_int_4[2] = ctx->Color.ColorMask[0][BCOMP] ? 1 : 0;
574 v->value_int_4[3] = ctx->Color.ColorMask[0][ACOMP] ? 1 : 0;
578 v->value_bool = ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0] == 1.0;
582 v->value_enum = ctx->ReadBuffer->ColorReadBuffer;
585 case GL_MAP2_GRID_DOMAIN:
586 v->value_float_4[0] = ctx->Eval.MapGrid2u1;
587 v->value_float_4[1] = ctx->Eval.MapGrid2u2;
588 v->value_float_4[2] = ctx->Eval.MapGrid2v1;
589 v->value_float_4[3] = ctx->Eval.MapGrid2v2;
592 case GL_TEXTURE_STACK_DEPTH:
593 unit = ctx->Texture.CurrentUnit;
594 v->value_int = ctx->TextureMatrixStack[unit].Depth + 1;
596 case GL_TEXTURE_MATRIX:
597 unit = ctx->Texture.CurrentUnit;
598 v->value_matrix = ctx->TextureMatrixStack[unit].Top;
601 case GL_TEXTURE_COORD_ARRAY:
602 case GL_TEXTURE_COORD_ARRAY_SIZE:
603 case GL_TEXTURE_COORD_ARRAY_TYPE:
604 case GL_TEXTURE_COORD_ARRAY_STRIDE:
605 array = &ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)];
606 v->value_int = *(GLuint *) ((char *) array + d->offset);
609 case GL_ACTIVE_TEXTURE_ARB:
610 v->value_int = GL_TEXTURE0_ARB + ctx->Texture.CurrentUnit;
612 case GL_CLIENT_ACTIVE_TEXTURE_ARB:
613 v->value_int = GL_TEXTURE0_ARB + ctx->Array.ActiveTexture;
616 case GL_MODELVIEW_STACK_DEPTH:
617 case GL_PROJECTION_STACK_DEPTH:
618 v->value_int = *(GLint *) ((char *) ctx + d->offset) + 1;
621 case GL_MAX_TEXTURE_SIZE:
622 case GL_MAX_3D_TEXTURE_SIZE:
623 case GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB:
624 p = (GLuint *) ((char *) ctx + d->offset);
625 v->value_int = 1 << (*p - 1);
629 v->value_int_4[0] = ctx->Scissor.X;
630 v->value_int_4[1] = ctx->Scissor.Y;
631 v->value_int_4[2] = ctx->Scissor.Width;
632 v->value_int_4[3] = ctx->Scissor.Height;
637 ctx->ListState.CurrentList ? ctx->ListState.CurrentList->Name : 0;
640 if (!ctx->CompileFlag)
642 else if (ctx->ExecuteFlag)
643 v->value_enum = GL_COMPILE_AND_EXECUTE;
645 v->value_enum = GL_COMPILE;
649 v->value_int_4[0] = ctx->Viewport.X;
650 v->value_int_4[1] = ctx->Viewport.Y;
651 v->value_int_4[2] = ctx->Viewport.Width;
652 v->value_int_4[3] = ctx->Viewport.Height;
655 case GL_ACTIVE_STENCIL_FACE_EXT:
656 v->value_enum = ctx->Stencil.ActiveFace ? GL_BACK : GL_FRONT;
659 case GL_STENCIL_FAIL:
660 v->value_enum = ctx->Stencil.FailFunc[ctx->Stencil.ActiveFace];
662 case GL_STENCIL_FUNC:
663 v->value_enum = ctx->Stencil.Function[ctx->Stencil.ActiveFace];
665 case GL_STENCIL_PASS_DEPTH_FAIL:
666 v->value_enum = ctx->Stencil.ZFailFunc[ctx->Stencil.ActiveFace];
668 case GL_STENCIL_PASS_DEPTH_PASS:
669 v->value_enum = ctx->Stencil.ZPassFunc[ctx->Stencil.ActiveFace];
672 v->value_int = ctx->Stencil.Ref[ctx->Stencil.ActiveFace];
674 case GL_STENCIL_VALUE_MASK:
675 v->value_int = ctx->Stencil.ValueMask[ctx->Stencil.ActiveFace];
677 case GL_STENCIL_WRITEMASK:
678 v->value_int = ctx->Stencil.WriteMask[ctx->Stencil.ActiveFace];
681 case GL_NUM_EXTENSIONS:
682 v->value_int = _mesa_get_extension_count(ctx);
685 case GL_IMPLEMENTATION_COLOR_READ_TYPE_OES:
686 v->value_int = _mesa_get_color_read_type(ctx);
688 case GL_IMPLEMENTATION_COLOR_READ_FORMAT_OES:
689 v->value_int = _mesa_get_color_read_format(ctx);
692 case GL_CURRENT_MATRIX_STACK_DEPTH_ARB:
693 v->value_int = ctx->CurrentStack->Depth + 1;
695 case GL_CURRENT_MATRIX_ARB:
696 case GL_TRANSPOSE_CURRENT_MATRIX_ARB:
697 v->value_matrix = ctx->CurrentStack->Top;
700 case GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB:
701 v->value_int = _mesa_get_compressed_formats(ctx, NULL);
703 case GL_COMPRESSED_TEXTURE_FORMATS_ARB:
705 _mesa_get_compressed_formats(ctx, v->value_int_n.ints);
706 ASSERT(v->value_int_n.n <= 100);
709 case GL_MAX_VARYING_FLOATS_ARB:
710 v->value_int = ctx->Const.MaxVarying * 4;
713 /* Various object names */
715 case GL_TEXTURE_BINDING_1D:
716 case GL_TEXTURE_BINDING_2D:
717 case GL_TEXTURE_BINDING_3D:
718 case GL_TEXTURE_BINDING_1D_ARRAY_EXT:
719 case GL_TEXTURE_BINDING_2D_ARRAY_EXT:
720 case GL_TEXTURE_BINDING_CUBE_MAP_ARB:
721 case GL_TEXTURE_BINDING_RECTANGLE_NV:
722 case GL_TEXTURE_BINDING_EXTERNAL_OES:
723 case GL_TEXTURE_BINDING_CUBE_MAP_ARRAY:
724 case GL_TEXTURE_BINDING_2D_MULTISAMPLE:
725 case GL_TEXTURE_BINDING_2D_MULTISAMPLE_ARRAY:
726 unit = ctx->Texture.CurrentUnit;
728 ctx->Texture.Unit[unit].CurrentTex[d->offset]->Name;
731 /* GL_ARB_vertex_buffer_object */
732 case GL_VERTEX_ARRAY_BUFFER_BINDING_ARB:
733 case GL_NORMAL_ARRAY_BUFFER_BINDING_ARB:
734 case GL_COLOR_ARRAY_BUFFER_BINDING_ARB:
735 case GL_INDEX_ARRAY_BUFFER_BINDING_ARB:
736 case GL_EDGE_FLAG_ARRAY_BUFFER_BINDING_ARB:
737 case GL_SECONDARY_COLOR_ARRAY_BUFFER_BINDING_ARB:
738 case GL_FOG_COORDINATE_ARRAY_BUFFER_BINDING_ARB:
739 buffer_obj = (struct gl_buffer_object **)
740 ((char *) ctx->Array.ArrayObj + d->offset);
741 v->value_int = (*buffer_obj)->Name;
743 case GL_ARRAY_BUFFER_BINDING_ARB:
744 v->value_int = ctx->Array.ArrayBufferObj->Name;
746 case GL_TEXTURE_COORD_ARRAY_BUFFER_BINDING_ARB:
748 ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_TEX(ctx->Array.ActiveTexture)].BufferObj->Name;
750 case GL_ELEMENT_ARRAY_BUFFER_BINDING_ARB:
751 v->value_int = ctx->Array.ArrayObj->ElementArrayBufferObj->Name;
754 /* ARB_copy_buffer */
755 case GL_COPY_READ_BUFFER:
756 v->value_int = ctx->CopyReadBuffer->Name;
758 case GL_COPY_WRITE_BUFFER:
759 v->value_int = ctx->CopyWriteBuffer->Name;
762 case GL_PIXEL_PACK_BUFFER_BINDING_EXT:
763 v->value_int = ctx->Pack.BufferObj->Name;
765 case GL_PIXEL_UNPACK_BUFFER_BINDING_EXT:
766 v->value_int = ctx->Unpack.BufferObj->Name;
768 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
769 v->value_int = ctx->TransformFeedback.CurrentBuffer->Name;
771 case GL_TRANSFORM_FEEDBACK_BUFFER_PAUSED:
772 v->value_int = ctx->TransformFeedback.CurrentObject->Paused;
774 case GL_TRANSFORM_FEEDBACK_BUFFER_ACTIVE:
775 v->value_int = ctx->TransformFeedback.CurrentObject->Active;
777 case GL_TRANSFORM_FEEDBACK_BINDING:
778 v->value_int = ctx->TransformFeedback.CurrentObject->Name;
780 case GL_CURRENT_PROGRAM:
782 ctx->Shader.ActiveProgram ? ctx->Shader.ActiveProgram->Name : 0;
784 case GL_READ_FRAMEBUFFER_BINDING_EXT:
785 v->value_int = ctx->ReadBuffer->Name;
787 case GL_RENDERBUFFER_BINDING_EXT:
789 ctx->CurrentRenderbuffer ? ctx->CurrentRenderbuffer->Name : 0;
791 case GL_POINT_SIZE_ARRAY_BUFFER_BINDING_OES:
792 v->value_int = ctx->Array.ArrayObj->VertexAttrib[VERT_ATTRIB_POINT_SIZE].BufferObj->Name;
796 if (_mesa_get_clamp_fragment_color(ctx))
797 COPY_4FV(v->value_float_4, ctx->Fog.Color);
799 COPY_4FV(v->value_float_4, ctx->Fog.ColorUnclamped);
801 case GL_COLOR_CLEAR_VALUE:
802 if (_mesa_get_clamp_fragment_color(ctx)) {
803 v->value_float_4[0] = CLAMP(ctx->Color.ClearColor.f[0], 0.0F, 1.0F);
804 v->value_float_4[1] = CLAMP(ctx->Color.ClearColor.f[1], 0.0F, 1.0F);
805 v->value_float_4[2] = CLAMP(ctx->Color.ClearColor.f[2], 0.0F, 1.0F);
806 v->value_float_4[3] = CLAMP(ctx->Color.ClearColor.f[3], 0.0F, 1.0F);
808 COPY_4FV(v->value_float_4, ctx->Color.ClearColor.f);
810 case GL_BLEND_COLOR_EXT:
811 if (_mesa_get_clamp_fragment_color(ctx))
812 COPY_4FV(v->value_float_4, ctx->Color.BlendColor);
814 COPY_4FV(v->value_float_4, ctx->Color.BlendColorUnclamped);
816 case GL_ALPHA_TEST_REF:
817 if (_mesa_get_clamp_fragment_color(ctx))
818 v->value_float = ctx->Color.AlphaRef;
820 v->value_float = ctx->Color.AlphaRefUnclamped;
822 case GL_MAX_VERTEX_UNIFORM_VECTORS:
823 v->value_int = ctx->Const.VertexProgram.MaxUniformComponents / 4;
826 case GL_MAX_FRAGMENT_UNIFORM_VECTORS:
827 v->value_int = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
830 /* GL_ARB_texture_buffer_object */
831 case GL_TEXTURE_BUFFER_ARB:
832 v->value_int = ctx->Texture.BufferObject->Name;
834 case GL_TEXTURE_BINDING_BUFFER_ARB:
835 unit = ctx->Texture.CurrentUnit;
837 ctx->Texture.Unit[unit].CurrentTex[TEXTURE_BUFFER_INDEX]->Name;
839 case GL_TEXTURE_BUFFER_DATA_STORE_BINDING_ARB:
841 struct gl_buffer_object *buf =
842 ctx->Texture.Unit[ctx->Texture.CurrentUnit]
843 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObject;
844 v->value_int = buf ? buf->Name : 0;
847 case GL_TEXTURE_BUFFER_FORMAT_ARB:
848 v->value_int = ctx->Texture.Unit[ctx->Texture.CurrentUnit]
849 .CurrentTex[TEXTURE_BUFFER_INDEX]->BufferObjectFormat;
852 /* GL_ARB_sampler_objects */
853 case GL_SAMPLER_BINDING:
855 struct gl_sampler_object *samp =
856 ctx->Texture.Unit[ctx->Texture.CurrentUnit].Sampler;
859 * The sampler object may have been deleted on another context,
860 * so we try to lookup the sampler object before returning its Name.
862 if (samp && _mesa_lookup_samplerobj(ctx, samp->Name)) {
863 v->value_int = samp->Name;
869 /* GL_ARB_uniform_buffer_object */
870 case GL_UNIFORM_BUFFER_BINDING:
871 v->value_int = ctx->UniformBuffer->Name;
873 /* GL_ARB_timer_query */
875 if (ctx->Driver.GetTimestamp) {
876 v->value_int64 = ctx->Driver.GetTimestamp(ctx);
879 _mesa_problem(ctx, "driver doesn't implement GetTimestamp");
886 * Check extra constraints on a struct value_desc descriptor
888 * If a struct value_desc has a non-NULL extra pointer, it means that
889 * there are a number of extra constraints to check or actions to
890 * perform. The extras is just an integer array where each integer
891 * encode different constraints or actions.
893 * \param ctx current context
894 * \param func name of calling glGet*v() function for error reporting
895 * \param d the struct value_desc that has the extra constraints
897 * \return GL_FALSE if all of the constraints were not satisfied,
901 check_extra(struct gl_context *ctx, const char *func, const struct value_desc *d)
903 const GLuint version = ctx->Version;
904 GLboolean api_check = GL_FALSE;
905 GLboolean api_found = GL_FALSE;
908 for (e = d->extra; *e != EXTRA_END; e++) {
910 case EXTRA_VERSION_30:
915 case EXTRA_VERSION_31:
920 case EXTRA_VERSION_32:
925 case EXTRA_NEW_FRAG_CLAMP:
926 if (ctx->NewState & (_NEW_BUFFERS | _NEW_FRAG_CLAMP))
927 _mesa_update_state(ctx);
931 if (ctx->API == API_OPENGLES2)
936 if (_mesa_is_gles3(ctx))
941 if (_mesa_is_desktop_gl(ctx))
944 case EXTRA_API_GL_CORE:
946 if (ctx->API == API_OPENGL_CORE)
949 case EXTRA_NEW_BUFFERS:
950 if (ctx->NewState & _NEW_BUFFERS)
951 _mesa_update_state(ctx);
953 case EXTRA_FLUSH_CURRENT:
954 FLUSH_CURRENT(ctx, 0);
956 case EXTRA_VALID_DRAW_BUFFER:
957 if (d->pname - GL_DRAW_BUFFER0_ARB >= ctx->Const.MaxDrawBuffers) {
958 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(draw buffer %u)",
959 func, d->pname - GL_DRAW_BUFFER0_ARB);
963 case EXTRA_VALID_TEXTURE_UNIT:
964 if (ctx->Texture.CurrentUnit >= ctx->Const.MaxTextureCoordUnits) {
965 _mesa_error(ctx, GL_INVALID_OPERATION, "%s(texture %u)",
966 func, ctx->Texture.CurrentUnit);
970 case EXTRA_VALID_CLIP_DISTANCE:
971 if (d->pname - GL_CLIP_DISTANCE0 >= ctx->Const.MaxClipPlanes) {
972 _mesa_error(ctx, GL_INVALID_ENUM, "%s(clip distance %u)",
973 func, d->pname - GL_CLIP_DISTANCE0);
979 if (ctx->Const.GLSLVersion >= 130)
984 default: /* *e is a offset into the extension struct */
986 if (*(GLboolean *) ((char *) &ctx->Extensions + *e))
992 if (api_check && !api_found) {
993 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
994 _mesa_lookup_enum_by_nr(d->pname));
1001 static const struct value_desc error_value =
1002 { 0, 0, TYPE_INVALID, NO_OFFSET, NO_EXTRA };
1005 * Find the struct value_desc corresponding to the enum 'pname'.
1007 * We hash the enum value to get an index into the 'table' array,
1008 * which holds the index in the 'values' array of struct value_desc.
1009 * Once we've found the entry, we do the extra checks, if any, then
1010 * look up the value and return a pointer to it.
1012 * If the value has to be computed (for example, it's the result of a
1013 * function call or we need to add 1 to it), we use the tmp 'v' to
1016 * \param func name of glGet*v() func for error reporting
1017 * \param pname the enum value we're looking up
1018 * \param p is were we return the pointer to the value
1019 * \param v a tmp union value variable in the calling glGet*v() function
1021 * \return the struct value_desc corresponding to the enum or a struct
1022 * value_desc of TYPE_INVALID if not found. This lets the calling
1023 * glGet*v() function jump right into a switch statement and
1024 * handle errors there instead of having to check for NULL.
1026 static const struct value_desc *
1027 find_value(const char *func, GLenum pname, void **p, union value *v)
1029 GET_CURRENT_CONTEXT(ctx);
1030 struct gl_texture_unit *unit;
1032 const struct value_desc *d;
1036 /* We index into the table_set[] list of per-API hash tables using the API's
1037 * value in the gl_api enum. Since GLES 3 doesn't have an API_OPENGL* enum
1038 * value since it's compatible with GLES2 its entry in table_set[] is at the
1041 STATIC_ASSERT(Elements(table_set) == API_OPENGL_LAST + 2);
1042 if (_mesa_is_gles3(ctx)) {
1043 api = API_OPENGL_LAST + 1;
1045 mask = Elements(table(api)) - 1;
1046 hash = (pname * prime_factor);
1048 int idx = table(api)[hash & mask];
1050 /* If the enum isn't valid, the hash walk ends with index 0,
1051 * pointing to the first entry of values[] which doesn't hold
1052 * any valid enum. */
1053 if (unlikely(idx == 0)) {
1054 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1055 _mesa_lookup_enum_by_nr(pname));
1056 return &error_value;
1060 if (likely(d->pname == pname))
1066 if (unlikely(d->extra && !check_extra(ctx, func, d)))
1067 return &error_value;
1069 switch (d->location) {
1071 *p = ((char *) ctx->DrawBuffer + d->offset);
1074 *p = ((char *) ctx + d->offset);
1077 *p = ((char *) ctx->Array.ArrayObj + d->offset);
1080 unit = &ctx->Texture.Unit[ctx->Texture.CurrentUnit];
1081 *p = ((char *) unit + d->offset);
1084 find_custom_value(ctx, d, v);
1092 /* silence warning */
1093 return &error_value;
1096 static const int transpose[] = {
1104 _mesa_GetBooleanv(GLenum pname, GLboolean *params)
1106 const struct value_desc *d;
1112 d = find_value("glGetBooleanv", pname, &p, &v);
1117 params[0] = INT_TO_BOOLEAN(d->offset);
1122 params[3] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[3]);
1125 params[2] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[2]);
1128 params[1] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[1]);
1131 params[0] = FLOAT_TO_BOOLEAN(((GLfloat *) p)[0]);
1135 params[0] = FLOAT_TO_BOOLEAN(((GLdouble *) p)[0]);
1139 params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
1141 params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
1144 params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
1147 params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
1151 for (i = 0; i < v.value_int_n.n; i++)
1152 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1156 params[0] = INT64_TO_BOOLEAN(((GLint64 *) p)[0]);
1160 params[0] = ((GLboolean*) p)[0];
1164 m = *(GLmatrix **) p;
1165 for (i = 0; i < 16; i++)
1166 params[i] = FLOAT_TO_BOOLEAN(m->m[i]);
1170 m = *(GLmatrix **) p;
1171 for (i = 0; i < 16; i++)
1172 params[i] = FLOAT_TO_BOOLEAN(m->m[transpose[i]]);
1183 shift = d->type - TYPE_BIT_0;
1184 params[0] = (*(GLbitfield *) p >> shift) & 1;
1190 _mesa_GetFloatv(GLenum pname, GLfloat *params)
1192 const struct value_desc *d;
1198 d = find_value("glGetFloatv", pname, &p, &v);
1203 params[0] = (GLfloat) d->offset;
1208 params[3] = ((GLfloat *) p)[3];
1211 params[2] = ((GLfloat *) p)[2];
1214 params[1] = ((GLfloat *) p)[1];
1217 params[0] = ((GLfloat *) p)[0];
1221 params[0] = (GLfloat) (((GLdouble *) p)[0]);
1225 params[3] = (GLfloat) (((GLint *) p)[3]);
1227 params[2] = (GLfloat) (((GLint *) p)[2]);
1230 params[1] = (GLfloat) (((GLint *) p)[1]);
1233 params[0] = (GLfloat) (((GLint *) p)[0]);
1237 for (i = 0; i < v.value_int_n.n; i++)
1238 params[i] = INT_TO_FLOAT(v.value_int_n.ints[i]);
1242 params[0] = (GLfloat) (((GLint64 *) p)[0]);
1246 params[0] = BOOLEAN_TO_FLOAT(*(GLboolean*) p);
1250 m = *(GLmatrix **) p;
1251 for (i = 0; i < 16; i++)
1252 params[i] = m->m[i];
1256 m = *(GLmatrix **) p;
1257 for (i = 0; i < 16; i++)
1258 params[i] = m->m[transpose[i]];
1269 shift = d->type - TYPE_BIT_0;
1270 params[0] = BOOLEAN_TO_FLOAT((*(GLbitfield *) p >> shift) & 1);
1276 _mesa_GetIntegerv(GLenum pname, GLint *params)
1278 const struct value_desc *d;
1284 d = find_value("glGetIntegerv", pname, &p, &v);
1289 params[0] = d->offset;
1293 params[3] = IROUND(((GLfloat *) p)[3]);
1295 params[2] = IROUND(((GLfloat *) p)[2]);
1297 params[1] = IROUND(((GLfloat *) p)[1]);
1299 params[0] = IROUND(((GLfloat *) p)[0]);
1303 params[3] = FLOAT_TO_INT(((GLfloat *) p)[3]);
1305 params[2] = FLOAT_TO_INT(((GLfloat *) p)[2]);
1307 params[1] = FLOAT_TO_INT(((GLfloat *) p)[1]);
1309 params[0] = FLOAT_TO_INT(((GLfloat *) p)[0]);
1313 params[0] = FLOAT_TO_INT(((GLdouble *) p)[0]);
1317 params[3] = ((GLint *) p)[3];
1319 params[2] = ((GLint *) p)[2];
1322 params[1] = ((GLint *) p)[1];
1325 params[0] = ((GLint *) p)[0];
1329 for (i = 0; i < v.value_int_n.n; i++)
1330 params[i] = v.value_int_n.ints[i];
1334 params[0] = INT64_TO_INT(((GLint64 *) p)[0]);
1338 params[0] = BOOLEAN_TO_INT(*(GLboolean*) p);
1342 m = *(GLmatrix **) p;
1343 for (i = 0; i < 16; i++)
1344 params[i] = FLOAT_TO_INT(m->m[i]);
1348 m = *(GLmatrix **) p;
1349 for (i = 0; i < 16; i++)
1350 params[i] = FLOAT_TO_INT(m->m[transpose[i]]);
1361 shift = d->type - TYPE_BIT_0;
1362 params[0] = (*(GLbitfield *) p >> shift) & 1;
1368 _mesa_GetInteger64v(GLenum pname, GLint64 *params)
1370 const struct value_desc *d;
1376 d = find_value("glGetInteger64v", pname, &p, &v);
1381 params[0] = d->offset;
1385 params[3] = IROUND64(((GLfloat *) p)[3]);
1387 params[2] = IROUND64(((GLfloat *) p)[2]);
1389 params[1] = IROUND64(((GLfloat *) p)[1]);
1391 params[0] = IROUND64(((GLfloat *) p)[0]);
1395 params[3] = FLOAT_TO_INT64(((GLfloat *) p)[3]);
1397 params[2] = FLOAT_TO_INT64(((GLfloat *) p)[2]);
1399 params[1] = FLOAT_TO_INT64(((GLfloat *) p)[1]);
1401 params[0] = FLOAT_TO_INT64(((GLfloat *) p)[0]);
1405 params[0] = FLOAT_TO_INT64(((GLdouble *) p)[0]);
1409 params[3] = ((GLint *) p)[3];
1411 params[2] = ((GLint *) p)[2];
1414 params[1] = ((GLint *) p)[1];
1417 params[0] = ((GLint *) p)[0];
1421 for (i = 0; i < v.value_int_n.n; i++)
1422 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
1426 params[0] = ((GLint64 *) p)[0];
1430 params[0] = ((GLboolean*) p)[0];
1434 m = *(GLmatrix **) p;
1435 for (i = 0; i < 16; i++)
1436 params[i] = FLOAT_TO_INT64(m->m[i]);
1440 m = *(GLmatrix **) p;
1441 for (i = 0; i < 16; i++)
1442 params[i] = FLOAT_TO_INT64(m->m[transpose[i]]);
1453 shift = d->type - TYPE_BIT_0;
1454 params[0] = (*(GLbitfield *) p >> shift) & 1;
1460 _mesa_GetDoublev(GLenum pname, GLdouble *params)
1462 const struct value_desc *d;
1468 d = find_value("glGetDoublev", pname, &p, &v);
1473 params[0] = d->offset;
1478 params[3] = ((GLfloat *) p)[3];
1481 params[2] = ((GLfloat *) p)[2];
1484 params[1] = ((GLfloat *) p)[1];
1487 params[0] = ((GLfloat *) p)[0];
1491 params[0] = ((GLdouble *) p)[0];
1495 params[3] = ((GLint *) p)[3];
1497 params[2] = ((GLint *) p)[2];
1500 params[1] = ((GLint *) p)[1];
1503 params[0] = ((GLint *) p)[0];
1507 for (i = 0; i < v.value_int_n.n; i++)
1508 params[i] = v.value_int_n.ints[i];
1512 params[0] = (GLdouble) (((GLint64 *) p)[0]);
1516 params[0] = *(GLboolean*) p;
1520 m = *(GLmatrix **) p;
1521 for (i = 0; i < 16; i++)
1522 params[i] = m->m[i];
1526 m = *(GLmatrix **) p;
1527 for (i = 0; i < 16; i++)
1528 params[i] = m->m[transpose[i]];
1539 shift = d->type - TYPE_BIT_0;
1540 params[0] = (*(GLbitfield *) p >> shift) & 1;
1545 static enum value_type
1546 find_value_indexed(const char *func, GLenum pname, GLuint index, union value *v)
1548 GET_CURRENT_CONTEXT(ctx);
1553 if (index >= ctx->Const.MaxDrawBuffers)
1555 if (!ctx->Extensions.EXT_draw_buffers2)
1557 v->value_int = (ctx->Color.BlendEnabled >> index) & 1;
1562 case GL_BLEND_SRC_RGB:
1563 if (index >= ctx->Const.MaxDrawBuffers)
1565 if (!ctx->Extensions.ARB_draw_buffers_blend)
1567 v->value_int = ctx->Color.Blend[index].SrcRGB;
1569 case GL_BLEND_SRC_ALPHA:
1570 if (index >= ctx->Const.MaxDrawBuffers)
1572 if (!ctx->Extensions.ARB_draw_buffers_blend)
1574 v->value_int = ctx->Color.Blend[index].SrcA;
1578 case GL_BLEND_DST_RGB:
1579 if (index >= ctx->Const.MaxDrawBuffers)
1581 if (!ctx->Extensions.ARB_draw_buffers_blend)
1583 v->value_int = ctx->Color.Blend[index].DstRGB;
1585 case GL_BLEND_DST_ALPHA:
1586 if (index >= ctx->Const.MaxDrawBuffers)
1588 if (!ctx->Extensions.ARB_draw_buffers_blend)
1590 v->value_int = ctx->Color.Blend[index].DstA;
1592 case GL_BLEND_EQUATION_RGB:
1593 if (index >= ctx->Const.MaxDrawBuffers)
1595 if (!ctx->Extensions.ARB_draw_buffers_blend)
1597 v->value_int = ctx->Color.Blend[index].EquationRGB;
1599 case GL_BLEND_EQUATION_ALPHA:
1600 if (index >= ctx->Const.MaxDrawBuffers)
1602 if (!ctx->Extensions.ARB_draw_buffers_blend)
1604 v->value_int = ctx->Color.Blend[index].EquationA;
1607 case GL_COLOR_WRITEMASK:
1608 if (index >= ctx->Const.MaxDrawBuffers)
1610 if (!ctx->Extensions.EXT_draw_buffers2)
1612 v->value_int_4[0] = ctx->Color.ColorMask[index][RCOMP] ? 1 : 0;
1613 v->value_int_4[1] = ctx->Color.ColorMask[index][GCOMP] ? 1 : 0;
1614 v->value_int_4[2] = ctx->Color.ColorMask[index][BCOMP] ? 1 : 0;
1615 v->value_int_4[3] = ctx->Color.ColorMask[index][ACOMP] ? 1 : 0;
1618 case GL_TRANSFORM_FEEDBACK_BUFFER_START:
1619 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1621 if (!ctx->Extensions.EXT_transform_feedback)
1623 v->value_int64 = ctx->TransformFeedback.CurrentObject->Offset[index];
1626 case GL_TRANSFORM_FEEDBACK_BUFFER_SIZE:
1627 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1629 if (!ctx->Extensions.EXT_transform_feedback)
1632 = ctx->TransformFeedback.CurrentObject->RequestedSize[index];
1635 case GL_TRANSFORM_FEEDBACK_BUFFER_BINDING:
1636 if (index >= ctx->Const.MaxTransformFeedbackBuffers)
1638 if (!ctx->Extensions.EXT_transform_feedback)
1640 v->value_int = ctx->TransformFeedback.CurrentObject->BufferNames[index];
1643 case GL_UNIFORM_BUFFER_BINDING:
1644 if (index >= ctx->Const.MaxUniformBufferBindings)
1646 if (!ctx->Extensions.ARB_uniform_buffer_object)
1648 v->value_int = ctx->UniformBufferBindings[index].BufferObject->Name;
1651 case GL_UNIFORM_BUFFER_START:
1652 if (index >= ctx->Const.MaxUniformBufferBindings)
1654 if (!ctx->Extensions.ARB_uniform_buffer_object)
1656 v->value_int = ctx->UniformBufferBindings[index].Offset;
1659 case GL_UNIFORM_BUFFER_SIZE:
1660 if (index >= ctx->Const.MaxUniformBufferBindings)
1662 if (!ctx->Extensions.ARB_uniform_buffer_object)
1664 v->value_int = ctx->UniformBufferBindings[index].Size;
1667 /* ARB_texture_multisample / GL3.2 */
1668 case GL_SAMPLE_MASK_VALUE:
1671 if (!ctx->Extensions.ARB_texture_multisample)
1673 v->value_int = ctx->Multisample.SampleMaskValue;
1678 _mesa_error(ctx, GL_INVALID_ENUM, "%s(pname=%s)", func,
1679 _mesa_lookup_enum_by_nr(pname));
1680 return TYPE_INVALID;
1682 _mesa_error(ctx, GL_INVALID_VALUE, "%s(pname=%s)", func,
1683 _mesa_lookup_enum_by_nr(pname));
1684 return TYPE_INVALID;
1688 _mesa_GetBooleani_v( GLenum pname, GLuint index, GLboolean *params )
1691 enum value_type type =
1692 find_value_indexed("glGetBooleani_v", pname, index, &v);
1696 params[0] = INT_TO_BOOLEAN(v.value_int);
1699 params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
1700 params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
1701 params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
1702 params[3] = INT_TO_BOOLEAN(v.value_int_4[3]);
1705 params[0] = INT64_TO_BOOLEAN(v.value_int);
1708 ; /* nothing - GL error was recorded */
1713 _mesa_GetIntegeri_v( GLenum pname, GLuint index, GLint *params )
1716 enum value_type type =
1717 find_value_indexed("glGetIntegeri_v", pname, index, &v);
1721 params[0] = v.value_int;
1724 params[0] = v.value_int_4[0];
1725 params[1] = v.value_int_4[1];
1726 params[2] = v.value_int_4[2];
1727 params[3] = v.value_int_4[3];
1730 params[0] = INT64_TO_INT(v.value_int);
1733 ; /* nothing - GL error was recorded */
1738 _mesa_GetInteger64i_v( GLenum pname, GLuint index, GLint64 *params )
1741 enum value_type type =
1742 find_value_indexed("glGetInteger64i_v", pname, index, &v);
1746 params[0] = v.value_int;
1749 params[0] = v.value_int_4[0];
1750 params[1] = v.value_int_4[1];
1751 params[2] = v.value_int_4[2];
1752 params[3] = v.value_int_4[3];
1755 params[0] = v.value_int;
1758 ; /* nothing - GL error was recorded */
1763 _mesa_GetFixedv(GLenum pname, GLfixed *params)
1765 const struct value_desc *d;
1771 d = find_value("glGetDoublev", pname, &p, &v);
1776 params[0] = INT_TO_FIXED(d->offset);
1781 params[3] = FLOAT_TO_FIXED(((GLfloat *) p)[3]);
1784 params[2] = FLOAT_TO_FIXED(((GLfloat *) p)[2]);
1787 params[1] = FLOAT_TO_FIXED(((GLfloat *) p)[1]);
1790 params[0] = FLOAT_TO_FIXED(((GLfloat *) p)[0]);
1794 params[0] = FLOAT_TO_FIXED(((GLdouble *) p)[0]);
1798 params[3] = INT_TO_FIXED(((GLint *) p)[3]);
1800 params[2] = INT_TO_FIXED(((GLint *) p)[2]);
1803 params[1] = INT_TO_FIXED(((GLint *) p)[1]);
1806 params[0] = INT_TO_FIXED(((GLint *) p)[0]);
1810 for (i = 0; i < v.value_int_n.n; i++)
1811 params[i] = INT_TO_FIXED(v.value_int_n.ints[i]);
1815 params[0] = ((GLint64 *) p)[0];
1819 params[0] = BOOLEAN_TO_FIXED(((GLboolean*) p)[0]);
1823 m = *(GLmatrix **) p;
1824 for (i = 0; i < 16; i++)
1825 params[i] = FLOAT_TO_FIXED(m->m[i]);
1829 m = *(GLmatrix **) p;
1830 for (i = 0; i < 16; i++)
1831 params[i] = FLOAT_TO_FIXED(m->m[transpose[i]]);
1842 shift = d->type - TYPE_BIT_0;
1843 params[0] = BOOLEAN_TO_FIXED((*(GLbitfield *) p >> shift) & 1);