//-----------------------------------------------------------------------
// -----------------------------------------------------------------------
// file="glApiManagerConst"
// Project: StgSharp
// AuthorGroup: Nitload
// Copyright (c) Nitload. All rights reserved.
//     
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.
//     
// -----------------------------------------------------------------------
// -----------------------------------------------------------------------
using System;
using System.Collections.Generic;
using System.Text;

namespace StgSharp.Graphics.OpenGL
{
    public static partial class glManager
    {

        #region coreVersion

        private static bool core10 = false;
        private static bool core11 = false;
        private static bool core12 = false;
        private static bool core13 = false;
        private static bool core14 = false;
        private static bool core15 = false;
        private static bool core20 = false;
        private static bool core21 = false;
        private static bool core30 = false;
        private static bool core31 = false;
        private static bool core32 = false;
        private static bool core33 = false;
        private static bool core40 = false;
        private static bool core41 = false;
        private static bool core42 = false;
        private static bool core43 = false;
        private static bool core44 = false;
        private static bool core45 = false;
        private static bool core46 = false;

        #endregion

        #region extension

        private static bool _3DFX_tbuffer;
        private static bool _3DFX_texture_compression_FXT1;
        private static bool _4DFX_multisample;
        private static bool AMD_blend_minmax_factor;
        private static bool AMD_conservative_depth;
        private static bool AMD_debug_output;
        private static bool AMD_depth_clamp_separate;
        private static bool AMD_draw_buffers_blend;
        private static bool AMD_framebuffer_multisample_advanced;
        private static bool AMD_framebuffer_sample_positions;
        private static bool AMD_gcn_shader;
        private static bool AMD_gpu_shader_half_float;
        private static bool AMD_gpu_shader_int16;
        private static bool AMD_gpu_shader_int64;
        private static bool AMD_interleaved_elements;
        private static bool AMD_multi_draw_indirect;
        private static bool AMD_name_gen_delete;
        private static bool AMD_occlusion_query_event;
        private static bool AMD_performance_monitor;
        private static bool AMD_pinned_memory;
        private static bool AMD_query_buffer_object;
        private static bool AMD_sample_positions;
        private static bool AMD_seamless_cubemap_per_texture;
        private static bool AMD_shader_atomic_counter_ops;
        private static bool AMD_shader_ballot;
        private static bool AMD_shader_explicit_vertex_parameter;
        private static bool AMD_shader_gpu_shader_half_float_fetch;
        private static bool AMD_shader_image_load_store_lod;
        private static bool AMD_shader_stencil_export;
        private static bool AMD_shader_trinary_minmax;
        private static bool AMD_sparse_texture;
        private static bool AMD_stencil_operation_extended;
        private static bool AMD_texture_gather_bias_lod;
        private static bool AMD_texture_texture4;
        private static bool AMD_transform_feedback3_lines_triangles;
        private static bool AMD_transform_feedback4;
        private static bool AMD_vertex_shader_layer;
        private static bool AMD_vertex_shader_tessellator;
        private static bool AMD_vertex_shader_viewport_index;
        private static bool APPLE_aux_depth_stencil;
        private static bool APPLE_client_storage;
        private static bool APPLE_element_array;
        private static bool APPLE_fence;
        private static bool APPLE_float_pixels;
        private static bool APPLE_flush_buffer_range;
        private static bool APPLE_object_purgeable;
        private static bool APPLE_rgb_422;
        private static bool APPLE_row_bytes;
        private static bool APPLE_specular_vector;
        private static bool APPLE_texture_range;
        private static bool APPLE_transform_hint;
        private static bool APPLE_vertex_array_object;
        private static bool APPLE_vertex_array_range;
        private static bool APPLE_vertex_program_evaluators;
        private static bool APPLE_ycbcr_422;
        private static bool ARB_arrays_of_arrays;
        private static bool ARB_base_instance;
        private static bool ARB_bindless_texture;
        private static bool ARB_blend_func_extended;
        private static bool ARB_buffer_storage;
        private static bool ARB_cl_event;
        private static bool ARB_clear_buffer_object;
        private static bool ARB_clear_texture;
        private static bool ARB_clip_control;
        private static bool ARB_color_buffer_float;
        private static bool ARB_compatibility;
        private static bool ARB_compressed_texture_pixel_storage;
        private static bool ARB_compute_shader;
        private static bool ARB_compute_variable_group_size;
        private static bool ARB_conditional_render_inverted;
        private static bool ARB_conservative_depth;
        private static bool ARB_copy_buffer;
        private static bool ARB_copy_image;
        private static bool ARB_cull_distance;
        private static bool ARB_debug_output;
        private static bool ARB_depth_buffer_float;
        private static bool ARB_depth_clamp;
        private static bool ARB_depth_texture;
        private static bool ARB_derivative_control;
        private static bool ARB_direct_state_access;
        private static bool ARB_draw_buffers;
        private static bool ARB_draw_buffers_blend;
        private static bool ARB_draw_elements_base_vertex;
        private static bool ARB_draw_indirect;
        private static bool ARB_draw_instanced;
        private static bool ARB_enhanced_layouts;
        private static bool ARB_ES2_compatibility;
        private static bool ARB_ES3_1_compatibility;
        private static bool ARB_ES3_2_compatibility;
        private static bool ARB_ES3_compatibility;
        private static bool ARB_explicit_attrib_location;
        private static bool ARB_explicit_uniform_location;
        private static bool ARB_fragment_coord_conventions;
        private static bool ARB_fragment_layer_viewport;
        private static bool ARB_fragment_program;
        private static bool ARB_fragment_program_shadow;
        private static bool ARB_fragment_shader;
        private static bool ARB_fragment_shader_interlock;
        private static bool ARB_framebuffer_no_attachments;
        private static bool ARB_framebuffer_object;
        private static bool ARB_framebuffer_sRGB;
        private static bool ARB_geometry_shader4;
        private static bool ARB_get_program_binary;
        private static bool ARB_get_texture_sub_image;
        private static bool ARB_gl_spirv;
        private static bool ARB_gpu_shader_fp64;
        private static bool ARB_gpu_shader_int64;
        private static bool ARB_gpu_shader5;
        private static bool ARB_half_float_pixel;
        private static bool ARB_half_float_vertex;
        private static bool ARB_imaging;
        private static bool ARB_indirect_parameters;
        private static bool ARB_instanced_arrays;
        private static bool ARB_internalformat_query;
        private static bool ARB_internalformat_query2;
        private static bool ARB_invalidate_subdata;
        private static bool ARB_map_buffer_alignment;
        private static bool ARB_map_buffer_range;
        private static bool ARB_matrix_palette;
        private static bool ARB_multi_bind;
        private static bool ARB_multi_draw_indirect;
        private static bool ARB_multisample;
        private static bool ARB_multitexture;
        private static bool ARB_occlusion_query;
        private static bool ARB_occlusion_query2;
        private static bool ARB_parallel_shader_compile;
        private static bool ARB_pipeline_statistics_query;
        private static bool ARB_pixel_buffer_object;
        private static bool ARB_point_parameters;
        private static bool ARB_point_sprite;
        private static bool ARB_polygon_offset_clamp;
        private static bool ARB_post_depth_coverage;
        private static bool ARB_program_interface_query;
        private static bool ARB_provoking_vertex;
        private static bool ARB_query_buffer_object;
        private static bool ARB_robust_buffer_access_behavior;
        private static bool ARB_robustness;
        private static bool ARB_robustness_isolation;
        private static bool ARB_sample_locations;
        private static bool ARB_sample_shading;
        private static bool ARB_sampler_objects;
        private static bool ARB_seamless_cube_map;
        private static bool ARB_seamless_cubemap_per_texture;
        private static bool ARB_separate_shader_objects;
        private static bool ARB_shader_atomic_counter_ops;
        private static bool ARB_shader_atomic_counters;
        private static bool ARB_shader_ballot;
        private static bool ARB_shader_bit_encoding;
        private static bool ARB_shader_clock;
        private static bool ARB_shader_draw_parameters;
        private static bool ARB_shader_group_vote;
        private static bool ARB_shader_image_load_store;
        private static bool ARB_shader_image_size;
        private static bool ARB_shader_objects;
        private static bool ARB_shader_precision;
        private static bool ARB_shader_stencil_export;
        private static bool ARB_shader_storage_buffer_object;
        private static bool ARB_shader_subroutine;
        private static bool ARB_shader_texture_image_samples;
        private static bool ARB_shader_texture_lod;
        private static bool ARB_shader_viewport_layer_array;
        private static bool ARB_shading_language_100;
        private static bool ARB_shading_language_420pack;
        private static bool ARB_shading_language_include;
        private static bool ARB_shading_language_packing;
        private static bool ARB_shadow;
        private static bool ARB_shadow_ambient;
        private static bool ARB_sparse_buffer;
        private static bool ARB_sparse_texture;
        private static bool ARB_sparse_texture_clamp;
        private static bool ARB_sparse_texture2;
        private static bool ARB_spirv_extensions;
        private static bool ARB_stencil_texturing;
        private static bool ARB_sync;
        private static bool ARB_tessellation_shader;
        private static bool ARB_texture_barrier;
        private static bool ARB_texture_border_clamp;
        private static bool ARB_texture_buffer_object;
        private static bool ARB_texture_buffer_object_rgb32;
        private static bool ARB_texture_buffer_range;
        private static bool ARB_texture_compression;
        private static bool ARB_texture_compression_bptc;
        private static bool ARB_texture_compression_rgtc;
        private static bool ARB_texture_cube_map;
        private static bool ARB_texture_cube_map_array;
        private static bool ARB_texture_env_add;
        private static bool ARB_texture_env_combine;
        private static bool ARB_texture_env_crossbar;
        private static bool ARB_texture_env_dot3;
        private static bool ARB_texture_filter_anisotropic;
        private static bool ARB_texture_filter_minmax;
        private static bool ARB_texture_float;
        private static bool ARB_texture_gather;
        private static bool ARB_texture_mirror_clamp_to_edge;
        private static bool ARB_texture_mirrored_repeat;
        private static bool ARB_texture_multisample;
        private static bool ARB_texture_non_power_of_two;
        private static bool ARB_texture_query_levels;
        private static bool ARB_texture_query_lod;
        private static bool ARB_texture_rectangle;
        private static bool ARB_texture_rg;
        private static bool ARB_texture_rgb10_a2ui;
        private static bool ARB_texture_stencil8;
        private static bool ARB_texture_storage;
        private static bool ARB_texture_storage_multisample;
        private static bool ARB_texture_swizzle;
        private static bool ARB_texture_view;
        private static bool ARB_timer_query;
        private static bool ARB_transform_feedback_instanced;
        private static bool ARB_transform_feedback_overflow_query;
        private static bool ARB_transform_feedback2;
        private static bool ARB_transform_feedback3;
        private static bool ARB_transpose_matrix;
        private static bool ARB_uniform_buffer_object;
        private static bool ARB_vertex_array_bgra;
        private static bool ARB_vertex_array_object;
        private static bool ARB_vertex_attrib_64bit;
        private static bool ARB_vertex_attrib_binding;
        private static bool ARB_vertex_blend;
        private static bool ARB_vertex_buffer_object;
        private static bool ARB_vertex_program;
        private static bool ARB_vertex_shader;
        private static bool ARB_vertex_type_10f_11f_11f_rev;
        private static bool ARB_vertex_type_2_10_10_10_rev;
        private static bool ARB_viewport_array;
        private static bool ARB_window_pos;
        private static bool ATI_draw_buffers;
        private static bool ATI_element_array;
        private static bool ATI_envmap_bumpmap;
        private static bool ATI_fragment_shader;
        private static bool ATI_map_object_buffer;
        private static bool ATI_meminfo;
        private static bool ATI_pixel_format_float;
        private static bool ATI_pn_triangles;
        private static bool ATI_separate_stencil;
        private static bool ATI_text_fragment_shader;
        private static bool ATI_texture_env_combine3;
        private static bool ATI_texture_float;
        private static bool ATI_texture_mirror_once;
        private static bool ATI_vertex_array_object;
        private static bool ATI_vertex_attrib_array_object;
        private static bool ATI_vertex_streams;
        private static bool EXT_422_pixels;
        private static bool EXT_abgr;
        private static bool EXT_bgra;
        private static bool EXT_bindable_uniform;
        private static bool EXT_blend_color;
        private static bool EXT_blend_equation_separate;
        private static bool EXT_blend_func_separate;
        private static bool EXT_blend_logic_op;
        private static bool EXT_blend_minmax;
        private static bool EXT_blend_subtract;
        private static bool EXT_clip_volume_hint;
        private static bool EXT_cmyka;
        private static bool EXT_color_subtable;
        private static bool EXT_compiled_vertex_array;
        private static bool EXT_convolution;
        private static bool EXT_coordinate_frame;
        private static bool EXT_copy_texture;
        private static bool EXT_cull_vertex;
        private static bool EXT_debug_label;
        private static bool EXT_debug_marker;
        private static bool EXT_depth_bounds_test;
        private static bool EXT_direct_state_access;
        private static bool EXT_draw_buffers2;
        private static bool EXT_draw_instanced;
        private static bool EXT_draw_range_elements;
        private static bool EXT_EGL_image_storage;
        private static bool EXT_EGL_sync;
        private static bool EXT_external_buffer;
        private static bool EXT_fog_coord;
        private static bool EXT_framebuffer_blit;
        private static bool EXT_framebuffer_blit_layers;
        private static bool EXT_framebuffer_multisample;
        private static bool EXT_framebuffer_multisample_blit_scaled;
        private static bool EXT_framebuffer_object;
        private static bool EXT_framebuffer_sRGB;
        private static bool EXT_geometry_shader4;
        private static bool EXT_gpu_program_parameters;
        private static bool EXT_gpu_shader4;
        private static bool EXT_histogram;
        private static bool EXT_index_array_formats;
        private static bool EXT_index_func;
        private static bool EXT_index_material;
        private static bool EXT_index_texture;
        private static bool EXT_light_texture;
        private static bool EXT_memory_object;
        private static bool EXT_memory_object_fd;
        private static bool EXT_memory_object_win32;
        private static bool EXT_misc_attribute;
        private static bool EXT_multi_draw_arrays;
        private static bool EXT_multisample;
        private static bool EXT_multiview_tessellation_geometry_shader;
        private static bool EXT_multiview_texture_multisample;
        private static bool EXT_multiview_timer_query;
        private static bool EXT_packed_depth_stencil;
        private static bool EXT_packed_float;
        private static bool EXT_packed_pixels;
        private static bool EXT_paletted_texture;
        private static bool EXT_pixel_buffer_object;
        private static bool EXT_pixel_transform;
        private static bool EXT_pixel_transform_color_table;
        private static bool EXT_point_parameters;
        private static bool EXT_polygon_offset;
        private static bool EXT_polygon_offset_clamp;
        private static bool EXT_post_depth_coverage;
        private static bool EXT_provoking_vertex;
        private static bool EXT_raster_multisample;
        private static bool EXT_rescale_normal;
        private static bool EXT_secondary_color;
        private static bool EXT_semaphore;
        private static bool EXT_semaphore_fd;
        private static bool EXT_semaphore_win32;
        private static bool EXT_separate_shader_objects;
        private static bool EXT_separate_specular_color;
        private static bool EXT_shader_framebuffer_fetch;
        private static bool EXT_shader_framebuffer_fetch_non_coherent;
        private static bool EXT_shader_image_load_formatted;
        private static bool EXT_shader_image_load_store;
        private static bool EXT_shader_integer_mix;
        private static bool EXT_shader_samples_identical;
        private static bool EXT_shadow_funcs;
        private static bool EXT_shared_texture_palette;
        private static bool EXT_sparse_texture2;
        private static bool EXT_stencil_clear_tag;
        private static bool EXT_stencil_two_side;
        private static bool EXT_stencil_wrap;
        private static bool EXT_subtexture;
        private static bool EXT_texture;
        private static bool EXT_texture_array;
        private static bool EXT_texture_buffer_object;
        private static bool EXT_texture_compression_latc;
        private static bool EXT_texture_compression_rgtc;
        private static bool EXT_texture_compression_s3tc;
        private static bool EXT_texture_cube_map;
        private static bool EXT_texture_env_add;
        private static bool EXT_texture_env_combine;
        private static bool EXT_texture_env_dot3;
        private static bool EXT_texture_filter_anisotropic;
        private static bool EXT_texture_filter_minmax;
        private static bool EXT_texture_integer;
        private static bool EXT_texture_lod_bias;
        private static bool EXT_texture_mirror_clamp;
        private static bool EXT_texture_object;
        private static bool EXT_texture_perturb_normal;
        private static bool EXT_texture_shadow_lod;
        private static bool EXT_texture_shared_exponent;
        private static bool EXT_texture_snorm;
        private static bool EXT_texture_sRGB;
        private static bool EXT_texture_sRGB_decode;
        private static bool EXT_texture_sRGB_R8;
        private static bool EXT_texture_sRGB_RG8;
        private static bool EXT_texture_storage;
        private static bool EXT_texture_swizzle;
        private static bool EXT_texture3D;
        private static bool EXT_timer_query;
        private static bool EXT_transform_feedback;
        private static bool EXT_vertex_array;
        private static bool EXT_vertex_array_bgra;
        private static bool EXT_vertex_attrib_64bit;
        private static bool EXT_vertex_shader;
        private static bool EXT_vertex_weighting;
        private static bool EXT_win32_keyed_mutex;
        private static bool EXT_window_rectangles;
        private static bool EXT_x11_sync_object;
        private static bool GREMEDY_frame_terminator;
        private static bool GREMEDY_string_marker;
        private static bool HP_convolution_border_modes;
        private static bool HP_image_transform;
        private static bool HP_occlusion_test;
        private static bool HP_texture_lighting;
        private static bool IBM_cull_vertex;
        private static bool IBM_multimode_draw_arrays;
        private static bool IBM_rasterpos_clip;
        private static bool IBM_static_data;
        private static bool IBM_texture_mirrored_repeat;
        private static bool IBM_vertex_array_lists;
        private static bool INGR_blend_func_separate;
        private static bool INGR_color_clamp;
        private static bool INGR_interlace_read;
        private static bool INTEL_blackhole_render;
        private static bool INTEL_conservative_rasterization;
        private static bool INTEL_fragment_shader_ordering;
        private static bool INTEL_framebuffer_CMAA;
        private static bool INTEL_map_texture;
        private static bool INTEL_parallel_arrays;
        private static bool INTEL_performance_query;
        private static bool KHR_blend_equation_advanced;
        private static bool KHR_blend_equation_advanced_coherent;
        private static bool KHR_context_flush_control;
        private static bool KHR_debug;
        private static bool KHR_no_error;
        private static bool KHR_parallel_shader_compile;
        private static bool KHR_robust_buffer_access_behavior;
        private static bool KHR_robustness;
        private static bool KHR_shader_subgroup;
        private static bool KHR_texture_compression_astc_hdr;
        private static bool KHR_texture_compression_astc_ldr;
        private static bool KHR_texture_compression_astc_sliced_3d;
        private static bool MESA_framebuffer_flip_x;
        private static bool MESA_framebuffer_flip_y;
        private static bool MESA_framebuffer_swap_xy;
        private static bool MESA_pack_invert;
        private static bool MESA_program_binary_formats;
        private static bool MESA_resize_buffers;
        private static bool MESA_shader_integer_functions;
        private static bool MESA_tile_raster_order;
        private static bool MESA_window_pos;
        private static bool MESA_ycbcr_texture;
        private static bool MESAX_texture_stack;
        private static bool NV_alpha_to_coverage_dither_control;
        private static bool NV_bindless_multi_draw_indirect;
        private static bool NV_bindless_multi_draw_indirect_count;
        private static bool NV_bindless_texture;
        private static bool NV_blend_equation_advanced;
        private static bool NV_blend_equation_advanced_coherent;
        private static bool NV_blend_minmax_factor;
        private static bool NV_blend_square;
        private static bool NV_clip_space_w_scaling;
        private static bool NV_command_list;
        private static bool NV_compute_program5;
        private static bool NV_compute_shader_derivatives;
        private static bool NV_conditional_render;
        private static bool NV_conservative_raster;
        private static bool NV_conservative_raster_dilate;
        private static bool NV_conservative_raster_pre_snap;
        private static bool NV_conservative_raster_pre_snap_triangles;
        private static bool NV_conservative_raster_underestimation;
        private static bool NV_copy_depth_to_color;
        private static bool NV_copy_image;
        private static bool NV_deep_texture3D;
        private static bool NV_depth_buffer_float;
        private static bool NV_depth_clamp;
        private static bool NV_draw_texture;
        private static bool NV_draw_vulkan_image;
        private static bool NV_evaluators;
        private static bool NV_explicit_multisample;
        private static bool NV_fence;
        private static bool NV_fill_rectangle;
        private static bool NV_float_buffer;
        private static bool NV_fog_distance;
        private static bool NV_fragment_coverage_to_color;
        private static bool NV_fragment_program;
        private static bool NV_fragment_program_option;
        private static bool NV_fragment_program2;
        private static bool NV_fragment_program4;
        private static bool NV_fragment_shader_barycentric;
        private static bool NV_fragment_shader_interlock;
        private static bool NV_framebuffer_mixed_samples;
        private static bool NV_framebuffer_multisample_coverage;
        private static bool NV_geometry_program4;
        private static bool NV_geometry_shader_passthrough;
        private static bool NV_geometry_shader4;
        private static bool NV_gpu_multicast;
        private static bool NV_gpu_program4;
        private static bool NV_gpu_program5;
        private static bool NV_gpu_program5_mem_extended;
        private static bool NV_gpu_shader5;
        private static bool NV_half_float;
        private static bool NV_internalformat_sample_query;
        private static bool NV_light_max_exponent;
        private static bool NV_memory_attachment;
        private static bool NV_memory_object_sparse;
        private static bool NV_mesh_shader;
        private static bool NV_multisample_coverage;
        private static bool NV_multisample_filter_hint;
        private static bool NV_occlusion_query;
        private static bool NV_packed_depth_stencil;
        private static bool NV_parameter_buffer_object;
        private static bool NV_parameter_buffer_object2;
        private static bool NV_path_rendering;
        private static bool NV_path_rendering_shared_edge;
        private static bool NV_pixel_data_range;
        private static bool NV_point_sprite;
        private static bool NV_present_video;
        private static bool NV_primitive_restart;
        private static bool NV_primitive_shading_rate;
        private static bool NV_query_resource;
        private static bool NV_query_resource_tag;
        private static bool NV_register_combiners;
        private static bool NV_register_combiners2;
        private static bool NV_representative_fragment_test;
        private static bool NV_robustness_video_memory_purge;
        private static bool NV_sample_locations;
        private static bool NV_sample_mask_override_coverage;
        private static bool NV_scissor_exclusive;
        private static bool NV_shader_atomic_counters;
        private static bool NV_shader_atomic_float;
        private static bool NV_shader_atomic_float64;
        private static bool NV_shader_atomic_fp16_vector;
        private static bool NV_shader_atomic_int64;
        private static bool NV_shader_buffer_load;
        private static bool NV_shader_buffer_store;
        private static bool NV_shader_storage_buffer_object;
        private static bool NV_shader_subgroup_partitioned;
        private static bool NV_shader_texture_footprint;
        private static bool NV_shader_thread_group;
        private static bool NV_shader_thread_shuffle;
        private static bool NV_shading_rate_image;
        private static bool NV_stereo_view_rendering;
        private static bool NV_tessellation_program5;
        private static bool NV_texgen_emboss;
        private static bool NV_texgen_reflection;
        private static bool NV_texture_barrier;
        private static bool NV_texture_compression_vtc;
        private static bool NV_texture_env_combine4;
        private static bool NV_texture_expand_normal;
        private static bool NV_texture_multisample;
        private static bool NV_texture_rectangle;
        private static bool NV_texture_rectangle_compressed;
        private static bool NV_texture_shader;
        private static bool NV_texture_shader2;
        private static bool NV_texture_shader3;
        private static bool NV_timeline_semaphore;
        private static bool NV_transform_feedback;
        private static bool NV_transform_feedback2;
        private static bool NV_uniform_buffer_std430_layout;
        private static bool NV_uniform_buffer_unified_memory;
        private static bool NV_vdpau_interop;
        private static bool NV_vdpau_interop2;
        private static bool NV_vertex_array_range;
        private static bool NV_vertex_array_range2;
        private static bool NV_vertex_attrib_integer_64bit;
        private static bool NV_vertex_buffer_unified_memory;
        private static bool NV_vertex_program;
        private static bool NV_vertex_program1_1;
        private static bool NV_vertex_program2;
        private static bool NV_vertex_program2_option;
        private static bool NV_vertex_program3;
        private static bool NV_vertex_program4;
        private static bool NV_video_capture;
        private static bool NV_viewport_array2;
        private static bool NV_viewport_swizzle;
        private static bool NVX_blend_equation_advanced_multi_draw_buffers;
        private static bool NVX_conditional_render;
        private static bool NVX_gpu_memory_info;
        private static bool NVX_gpu_multicast2;
        private static bool NVX_linked_gpu_multicast;
        private static bool NVX_progress_fence;
        private static bool OES_byte_coordinates;
        private static bool OES_compressed_paletted_texture;
        private static bool OES_fixed_point;
        private static bool OES_query_matrix;
        private static bool OES_read_format;
        private static bool OES_single_precision;
        private static bool OML_interlace;
        private static bool OML_resample;
        private static bool OML_subsample;
        private static bool OVR_multiview;
        private static bool OVR_multiview2;
        private static bool PGI_misc_hints;
        private static bool PGI_vertex_hints;
        private static bool REND_screen_coordinates;
        private static bool S3_s3tc;
        private static bool SGI_color_matrix;
        private static bool SGI_color_table;
        private static bool SGI_texture_color_table;
        private static bool SGIS_detail_texture;
        private static bool SGIS_fog_function;
        private static bool SGIS_generate_mipmap;
        private static bool SGIS_multisample;
        private static bool SGIS_pixel_texture;
        private static bool SGIS_point_line_texgen;
        private static bool SGIS_point_parameters;
        private static bool SGIS_sharpen_texture;
        private static bool SGIS_texture_border_clamp;
        private static bool SGIS_texture_color_mask;
        private static bool SGIS_texture_edge_clamp;
        private static bool SGIS_texture_filter4;
        private static bool SGIS_texture_lod;
        private static bool SGIS_texture_select;
        private static bool SGIS_texture4D;
        private static bool SGIX_async;
        private static bool SGIX_async_histogram;
        private static bool SGIX_async_pixel;
        private static bool SGIX_blend_alpha_minmax;
        private static bool SGIX_calligraphic_fragment;
        private static bool SGIX_clipmap;
        private static bool SGIX_convolution_accuracy;
        private static bool SGIX_depth_pass_instrument;
        private static bool SGIX_depth_texture;
        private static bool SGIX_flush_raster;
        private static bool SGIX_fog_offset;
        private static bool SGIX_fragment_lighting;
        private static bool SGIX_framezoom;
        private static bool SGIX_igloo_interface;
        private static bool SGIX_instruments;
        private static bool SGIX_interlace;
        private static bool SGIX_ir_instrument1;
        private static bool SGIX_list_priority;
        private static bool SGIX_pixel_texture;
        private static bool SGIX_pixel_tiles;
        private static bool SGIX_polynomial_ffd;
        private static bool SGIX_reference_plane;
        private static bool SGIX_resample;
        private static bool SGIX_scalebias_hint;
        private static bool SGIX_shadow;
        private static bool SGIX_shadow_ambient;
        private static bool SGIX_sprite;
        private static bool SGIX_subsample;
        private static bool SGIX_tag_sample_buffer;
        private static bool SGIX_texture_add_env;
        private static bool SGIX_texture_coordinate_clamp;
        private static bool SGIX_texture_lod_bias;
        private static bool SGIX_texture_multi_buffer;
        private static bool SGIX_texture_scale_bias;
        private static bool SGIX_vertex_preclip;
        private static bool SGIX_ycrcb;
        private static bool SGIX_ycrcb_subsample;
        private static bool SGIX_ycrcba;
        private static bool SUN_convolution_border_modes;
        private static bool SUN_global_alpha;
        private static bool SUN_mesh_array;
        private static bool SUN_slice_accum;
        private static bool SUN_triangle_list;
        private static bool SUN_vertex;
        private static bool SUNX_constant_data;
        private static bool WIN_phong_shading;
        private static bool WIN_specular_fog;

        #endregion
    }
}