$ glxinfo name of display: :0.0 display: :0 screen: 0 direct rendering: Yes server glx vendor string: NVIDIA Corporation server glx version string: 1.4 server glx extensions: GLX_ARB_create_context, GLX_ARB_create_context_profile, GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, GLX_ARB_multisample, GLX_EXT_create_context_es2_profile, GLX_EXT_create_context_es_profile, GLX_EXT_swap_control, GLX_EXT_swap_control_tear, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_NV_float_buffer, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGI_swap_control, GLX_SGI_video_sync client glx vendor string: NVIDIA Corporation client glx version string: 1.4 client glx extensions: GLX_ARB_create_context, GLX_ARB_create_context_profile, GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_create_context_es2_profile, GLX_EXT_fbconfig_packed_float, GLX_EXT_framebuffer_sRGB, GLX_EXT_import_context, GLX_EXT_swap_control, GLX_EXT_swap_control_tear, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_NV_copy_image, GLX_NV_float_buffer, GLX_NV_multisample_coverage, GLX_NV_present_video, GLX_NV_swap_group, GLX_NV_video_capture, GLX_NV_video_out, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGI_swap_control, GLX_SGI_video_sync GLX version: 1.4 GLX extensions: GLX_ARB_create_context, GLX_ARB_create_context_profile, GLX_ARB_create_context_robustness, GLX_ARB_fbconfig_float, GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_create_context_es2_profile, GLX_EXT_swap_control, GLX_EXT_swap_control_tear, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_NV_float_buffer, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGI_swap_control, GLX_SGI_video_sync OpenGL vendor string: NVIDIA Corporation OpenGL renderer string: GeForce 7100 / nForce 630i/integrated/SSE2 OpenGL version string: 2.1.2 NVIDIA 304.137 OpenGL shading language version string: 1.20 NVIDIA via Cg compiler OpenGL extensions: GL_ARB_ES2_compatibility, GL_ARB_color_buffer_float, GL_ARB_compressed_texture_pixel_storage, GL_ARB_conservative_depth, GL_ARB_copy_buffer, GL_ARB_depth_clamp, GL_ARB_depth_texture, GL_ARB_draw_buffers, GL_ARB_explicit_attrib_location, GL_ARB_fragment_program, GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader, GL_ARB_framebuffer_object, GL_ARB_get_program_binary, GL_ARB_half_float_pixel, GL_ARB_half_float_vertex, GL_ARB_imaging, GL_ARB_internalformat_query, GL_ARB_map_buffer_alignment, GL_ARB_map_buffer_range, GL_ARB_multisample, GL_ARB_multitexture, GL_ARB_occlusion_query, GL_ARB_occlusion_query2, GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite, GL_ARB_provoking_vertex, GL_ARB_robustness, GL_ARB_sampler_objects, GL_ARB_separate_shader_objects, GL_ARB_shader_objects, GL_ARB_shading_language_100, GL_ARB_shading_language_420pack, GL_ARB_shading_language_include, GL_ARB_shadow, GL_ARB_sync, GL_ARB_texture_border_clamp, GL_ARB_texture_compression, GL_ARB_texture_cube_map, GL_ARB_texture_env_add, GL_ARB_texture_env_combine, GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3, GL_ARB_texture_float, GL_ARB_texture_mirrored_repeat, GL_ARB_texture_non_power_of_two, GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_storage, GL_ARB_texture_swizzle, GL_ARB_timer_query, GL_ARB_transpose_matrix, GL_ARB_vertex_array_bgra, GL_ARB_vertex_array_object, GL_ARB_vertex_buffer_object, GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ARB_window_pos, GL_ATI_draw_buffers, GL_ATI_texture_float, GL_ATI_texture_mirror_once, GL_EXT_Cg_shader, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color, GL_EXT_blend_equation_separate, GL_EXT_blend_func_separate, GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_compiled_vertex_array, GL_EXT_depth_bounds_test, GL_EXT_direct_state_access, GL_EXT_draw_range_elements, GL_EXT_fog_coord, GL_EXT_framebuffer_blit, GL_EXT_framebuffer_multisample, GL_EXT_framebuffer_object, GL_EXT_gpu_program_parameters, GL_EXT_import_sync_object, GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil, GL_EXT_packed_pixels, GL_EXT_pixel_buffer_object, GL_EXT_point_parameters, GL_EXT_provoking_vertex, GL_EXT_rescale_normal, GL_EXT_secondary_color, GL_EXT_separate_shader_objects, GL_EXT_separate_specular_color, GL_EXT_shadow_funcs, GL_EXT_stencil_two_side, GL_EXT_stencil_wrap, GL_EXT_texture3D, GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_s3tc, GL_EXT_texture_cube_map, GL_EXT_texture_edge_clamp, GL_EXT_texture_env_add, GL_EXT_texture_env_combine, GL_EXT_texture_env_dot3, GL_EXT_texture_filter_anisotropic, GL_EXT_texture_format_BGRA8888, GL_EXT_texture_lod, GL_EXT_texture_lod_bias, GL_EXT_texture_mirror_clamp, GL_EXT_texture_object, GL_EXT_texture_sRGB, GL_EXT_texture_sRGB_decode, GL_EXT_texture_storage, GL_EXT_texture_swizzle, GL_EXT_timer_query, GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, GL_EXT_x11_sync_object, GL_IBM_rasterpos_clip, GL_IBM_texture_mirrored_repeat, GL_KTX_buffer_region, GL_NVX_conditional_render, GL_NV_ES1_1_compatibility, GL_NV_alpha_test, GL_NV_blend_minmax, GL_NV_blend_square, GL_NV_complex_primitives, GL_NV_copy_depth_to_color, GL_NV_depth_clamp, GL_NV_fbo_color_attachments, GL_NV_fence, GL_NV_float_buffer, GL_NV_fog_distance, GL_NV_fragdepth, GL_NV_fragment_program, GL_NV_fragment_program2, GL_NV_fragment_program_option, GL_NV_framebuffer_multisample_coverage, GL_NV_half_float, GL_NV_light_max_exponent, GL_NV_multisample_filter_hint, GL_NV_occlusion_query, GL_NV_packed_depth_stencil, GL_NV_pixel_data_range, GL_NV_point_sprite, GL_NV_primitive_restart, GL_NV_register_combiners, GL_NV_register_combiners2, GL_NV_texgen_reflection, GL_NV_texture_barrier, GL_NV_texture_compression_vtc, GL_NV_texture_env_combine4, GL_NV_texture_expand_normal, GL_NV_texture_lod_clamp, GL_NV_texture_rectangle, GL_NV_texture_shader, GL_NV_texture_shader2, GL_NV_texture_shader3, GL_NV_vertex_array_range, GL_NV_vertex_array_range2, GL_NV_vertex_program, GL_NV_vertex_program1_1, GL_NV_vertex_program2, GL_NV_vertex_program2_option, GL_NV_vertex_program3, GL_OES_compressed_paletted_texture, GL_OES_depth24, GL_OES_depth32, GL_OES_depth_texture, GL_OES_element_index_uint, GL_OES_fbo_render_mipmap, GL_OES_get_program_binary, GL_OES_mapbuffer, GL_OES_packed_depth_stencil, GL_OES_point_size_array, GL_OES_point_sprite, GL_OES_read_format, GL_OES_rgb8_rgba8, GL_OES_standard_derivatives, GL_OES_texture_3D, GL_OES_texture_float, GL_OES_texture_float_linear, GL_OES_texture_half_float, GL_OES_texture_half_float_linear, GL_OES_texture_npot, GL_OES_vertex_array_object, GL_OES_vertex_half_float, GL_S3_s3tc, GL_SGIS_generate_mipmap, GL_SGIS_texture_lod, GL_SGIX_depth_texture, GL_SGIX_shadow, GL_SUN_slice_accum OpenGL ES profile version string: OpenGL ES 2.0 NVIDIA 304.137 304.137 OpenGL ES profile shading language version string: OpenGL ES GLSL ES 1.00 OpenGL ES profile extensions: GL_EXT_Cg_shader, GL_EXT_bgra, GL_EXT_framebuffer_object, GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_s3tc, GL_EXT_texture_filter_anisotropic, GL_EXT_texture_format_BGRA8888, GL_EXT_unpack_subimage, GL_NV_alpha_test, GL_NV_blend_minmax, GL_NV_complex_primitives, GL_NV_draw_buffers, GL_NV_fbo_color_attachments, GL_NV_fragdepth, GL_NV_fragment_program, GL_NV_fragment_program2, GL_NV_get_tex_image, GL_NV_read_buffer, GL_NV_texture_lod_clamp, GL_NV_unpack_subimage, GL_NV_vertex_program, GL_NV_vertex_program1_1, GL_NV_vertex_program2, GL_NV_vertex_program2_option, GL_NV_vertex_program3, GL_OES_compressed_paletted_texture, GL_OES_depth24, GL_OES_depth32, GL_OES_depth_texture, GL_OES_element_index_uint, GL_OES_fbo_render_mipmap, GL_OES_get_program_binary, GL_OES_mapbuffer, GL_OES_packed_depth_stencil, GL_OES_point_size_array, GL_OES_point_sprite, GL_OES_read_format, GL_OES_rgb8_rgba8, GL_OES_standard_derivatives, GL_OES_texture_3D, GL_OES_texture_float, GL_OES_texture_float_linear, GL_OES_texture_half_float, GL_OES_texture_half_float_linear, GL_OES_texture_npot, GL_OES_vertex_array_object, GL_OES_vertex_half_float