Contains methods to query and disable OpenGL extensions. More...

#include <Inventor/devices/SoGLExtension.h>

Static Public Member Functions
static SbBool	isAvailable (const char *extension)
	Returns true if the extension is available.

static SbBool	isAvailable (const SbString &extension)
	Returns true if the extension is available.

static void	disableExtension (const SbString &extension)
	Disable a specific extension in software.

Detailed Description

Contains methods to query and disable OpenGL extensions.

SoGLExtension is based on GLEW (the OpenGL Extension Wrangler library). The OpenGL Extension Wrangler Library (GLEW) is a cross-platform, open-source extension loading library. GLEW provides efficient run-time mechanisms for determining which OpenGL extensions are supported on the current platform. Once an extension is known to be present, the function linked to that extension can be called directly.

EXAMPLE

isAvailable()

SoRef<SoGLContext> context = new SoGLContext( true );
context->bind();
  SbBool ok = SoGLExtension::isAvailable( "GL_ARB_vertex_program" );
context->unbind();

NOTES

SoGLExtension

The following list categorizes the extensions that can be queried with isAvailable():

GL_VERSION_1_1
GL_VERSION_1_2
GL_VERSION_1_3
GL_VERSION_1_4
GL_VERSION_1_5
GL_VERSION_2_0
GL_VERSION_2_1
GL_VERSION_3_0
GL_VERSION_3_1
GL_VERSION_3_2
GL_VERSION_3_3
GL_VERSION_4_0
GL_VERSION_4_1

3DFX

GL_3DFX_multisample
GL_3DFX_tbuffer
GL_3DFX_texture_compression_FXT1

AMD

GL_AMD_draw_buffers_blend
GL_AMD_performance_monitor
GL_AMD_texture_texture4
GL_AMD_vertex_shader_tessellator
GL_AMD_seamless_cubemap_per_texture
GL_AMD_shader_stencil_export
GL_AMD_conservative_depth
GL_AMD_debug_output
GL_AMD_name_gen_delete
GL_AMD_transform_feedback3_lines_triangles
GL_AMD_depth_clamp_separate

APPLE

GL_APPLE_aux_depth_stencil
GL_APPLE_client_storage
GL_APPLE_element_array
GL_APPLE_fence
GL_APPLE_float_pixels
GL_APPLE_flush_buffer_range
GL_APPLE_object_purgeable
GL_APPLE_pixel_buffer
GL_APPLE_rgb_422
GL_APPLE_row_bytes
GL_APPLE_specular_vector
GL_APPLE_texture_range
GL_APPLE_transform_hint
GL_APPLE_vertex_array_object
GL_APPLE_vertex_array_range
GL_APPLE_vertex_program_evaluators
GL_APPLE_ycbcr_422

ARB

GL_ARB_color_buffer_float
GL_ARB_compatibility
GL_ARB_copy_buffer
GL_ARB_depth_buffer_float
GL_ARB_depth_clamp
GL_ARB_depth_texture
GL_ARB_draw_buffers
GL_ARB_draw_buffers_blend
GL_ARB_draw_elements_base_vertex
GL_ARB_draw_instanced
GL_ARB_fragment_coord_conventions
GL_ARB_fragment_program
GL_ARB_fragment_program_shadow
GL_ARB_fragment_shader
GL_ARB_framebuffer_object
GL_ARB_framebuffer_sRGB
GL_ARB_geometry_shader4
GL_ARB_half_float_pixel
GL_ARB_half_float_vertex
GL_ARB_imaging
GL_ARB_instanced_arrays
GL_ARB_map_buffer_range
GL_ARB_matrix_palette
GL_ARB_multisample
GL_ARB_multitexture
GL_ARB_occlusion_query
GL_ARB_pixel_buffer_object
GL_ARB_point_parameters
GL_ARB_point_sprite
GL_ARB_provoking_vertex
GL_ARB_sample_shading
GL_ARB_seamless_cube_map
GL_ARB_shader_objects
GL_ARB_shader_texture_lod
GL_ARB_shading_language_100
GL_ARB_shadow
GL_ARB_shadow_ambient
GL_ARB_sync
GL_ARB_texture_border_clamp
GL_ARB_texture_buffer_object
GL_ARB_texture_compression
GL_ARB_texture_compression_rgtc
GL_ARB_texture_cube_map
GL_ARB_texture_cube_map_array
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_gather
GL_ARB_texture_mirrored_repeat
GL_ARB_texture_multisample
GL_ARB_texture_non_power_of_two
GL_ARB_texture_query_lod
GL_ARB_texture_rectangle
GL_ARB_texture_rg
GL_ARB_transpose_matrix
GL_ARB_uniform_buffer_object
GL_ARB_vertex_array_bgra
GL_ARB_vertex_array_object
GL_ARB_vertex_blend
GL_ARB_vertex_buffer_object
GL_ARB_vertex_program
GL_ARB_vertex_shader
GL_ARB_window_pos
GL_ARB_blend_func_extended
GL_ARB_draw_indirect
GL_ARB_explicit_attrib_location
GL_ARB_gpu_shader5
GL_ARB_gpu_shader_fp64
GL_ARB_occlusion_query2
GL_ARB_sampler_objects
GL_ARB_shader_bit_encoding
GL_ARB_shader_subroutine
GL_ARB_shading_language_include
GL_ARB_tessellation_shader
GL_ARB_texture_buffer_object_rgb32
GL_ARB_texture_compression_bptc
GL_ARB_texture_rgb10_a2ui
GL_ARB_texture_swizzle
GL_ARB_timer_query
GL_ARB_transform_feedback2
GL_ARB_transform_feedback3
GL_ARB_vertex_type_2_10_10_10_rev
GL_ARB_ES2_compatibility
GL_ARB_cl_event
GL_ARB_debug_output
GL_ARB_get_program_binary
GL_ARB_robustness
GL_ARB_separate_shader_objects
GL_ARB_shader_precision
GL_ARB_shader_stencil_export
GL_ARB_vertex_attrib_64bit
GL_ARB_viewport_array

ATI

GL_ATIX_point_sprites
GL_ATIX_texture_env_combine3
GL_ATIX_texture_env_route
GL_ATIX_vertex_shader_output_point_size
GL_ATI_draw_buffers
GL_ATI_element_array
GL_ATI_envmap_bumpmap
GL_ATI_fragment_shader
GL_ATI_map_object_buffer
GL_ATI_meminfo
GL_ATI_pn_triangles
GL_ATI_separate_stencil
GL_ATI_shader_texture_lod
GL_ATI_text_fragment_shader
GL_ATI_texture_compression_3dc
GL_ATI_texture_env_combine3
GL_ATI_texture_float
GL_ATI_texture_mirror_once
GL_ATI_vertex_array_object
GL_ATI_vertex_attrib_array_object
GL_ATI_vertex_streams

EXT

GL_EXT_422_pixels
GL_EXT_Cg_shader
GL_EXT_abgr
GL_EXT_bgra
GL_EXT_bindable_uniform
GL_EXT_blend_color
GL_EXT_blend_equation_separate
GL_EXT_blend_func_separate
GL_EXT_blend_logic_op
GL_EXT_blend_minmax
GL_EXT_blend_subtract
GL_EXT_clip_volume_hint
GL_EXT_cmyka
GL_EXT_color_subtable
GL_EXT_compiled_vertex_array
GL_EXT_convolution
GL_EXT_coordinate_frame
GL_EXT_copy_texture
GL_EXT_cull_vertex
GL_EXT_depth_bounds_test
GL_EXT_direct_state_access
GL_EXT_draw_buffers2
GL_EXT_draw_instanced
GL_EXT_draw_range_elements
GL_EXT_fog_coord
GL_EXT_fragment_lighting
GL_EXT_framebuffer_blit
GL_EXT_framebuffer_multisample
GL_EXT_framebuffer_object
GL_EXT_framebuffer_sRGB
GL_EXT_geometry_shader4
GL_EXT_gpu_program_parameters
GL_EXT_gpu_shader4
GL_EXT_histogram
GL_EXT_index_array_formats
GL_EXT_index_func
GL_EXT_index_material
GL_EXT_index_texture
GL_EXT_light_texture
GL_EXT_misc_attribute
GL_EXT_multi_draw_arrays
GL_EXT_multisample
GL_EXT_packed_depth_stencil
GL_EXT_packed_float
GL_EXT_packed_pixels
GL_EXT_paletted_texture
GL_EXT_pixel_buffer_object
GL_EXT_pixel_transform
GL_EXT_pixel_transform_color_table
GL_EXT_point_parameters
GL_EXT_polygon_offset
GL_EXT_provoking_vertex
GL_EXT_rescale_normal
GL_EXT_separate_shader_objects
GL_EXT_scene_marker
GL_EXT_secondary_color
GL_EXT_separate_specular_color
GL_EXT_shadow_funcs
GL_EXT_shared_texture_palette
GL_EXT_stencil_clear_tag
GL_EXT_stencil_two_side
GL_EXT_stencil_wrap
GL_EXT_subtexture
GL_EXT_texture
GL_EXT_texture3D
GL_EXT_texture_array
GL_EXT_texture_buffer_object
GL_EXT_texture_compression_dxt1
GL_EXT_texture_compression_latc
GL_EXT_texture_compression_rgtc
GL_EXT_texture_compression_s3tc
GL_EXT_texture_cube_map
GL_EXT_texture_edge_clamp
GL_EXT_texture_env
GL_EXT_texture_env_add
GL_EXT_texture_env_combine
GL_EXT_texture_env_dot3
GL_EXT_texture_filter_anisotropic
GL_EXT_texture_integer
GL_EXT_texture_lod_bias
GL_EXT_texture_mirror_clamp
GL_EXT_texture_object
GL_EXT_texture_perturb_normal
GL_EXT_texture_rectangle
GL_EXT_texture_snorm
GL_EXT_texture_sRGB
GL_EXT_texture_shared_exponent
GL_EXT_texture_swizzle
GL_EXT_timer_query
GL_EXT_transform_feedback
GL_EXT_vertex_array
GL_EXT_vertex_array_bgra
GL_EXT_vertex_shader
GL_EXT_vertex_weighting
GL_EXT_shader_image_load_store
GL_EXT_vertex_attrib_64bit
GL_EXT_texture_sRGB_decode

GRemedy

GL_GREMEDY_frame_terminator
GL_GREMEDY_string_marker

HP

GL_HP_convolution_border_modes
GL_HP_image_transform
GL_HP_occlusion_test
GL_HP_texture_lighting

IBM

GL_IBM_cull_vertex
GL_IBM_multimode_draw_arrays
GL_IBM_rasterpos_clip
GL_IBM_static_data
GL_IBM_texture_mirrored_repeat
GL_IBM_vertex_array_lists

INGR

GL_INGR_color_clamp
GL_INGR_interlace_read

Intel

GL_INTEL_parallel_arrays
GL_INTEL_texture_scissor

KTX

GL_KTX_buffer_region

MESA

GL_MESAX_texture_stack
GL_MESA_pack_invert
GL_MESA_resize_buffers
GL_MESA_window_pos
GL_MESA_ycbcr_texture

NVidia

GL_NV_blend_square
GL_NV_conditional_render
GL_NV_copy_depth_to_color
GL_NV_copy_image
GL_NV_depth_buffer_float
GL_NV_depth_clamp
GL_NV_depth_range_unclamped
GL_NV_evaluators
GL_NV_explicit_multisample
GL_NV_fence
GL_NV_float_buffer
GL_NV_fog_distance
GL_NV_fragment_program
GL_NV_fragment_program2
GL_NV_fragment_program4
GL_NV_fragment_program_option
GL_NV_framebuffer_multisample_coverage
GL_NV_geometry_program4
GL_NV_geometry_shader4
GL_NV_gpu_program4
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_parameter_buffer_object
GL_NV_parameter_buffer_object2
GL_NV_pixel_data_range
GL_NV_point_sprite
GL_NV_present_video
GL_NV_primitive_restart
GL_NV_register_combiners
GL_NV_register_combiners2
GL_NV_shader_buffer_load
GL_NV_texgen_emboss
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_rectangle
GL_NV_texture_shader
GL_NV_texture_shader2
GL_NV_texture_shader3
GL_NV_transform_feedback
GL_NV_transform_feedback2
GL_NV_vertex_array_range
GL_NV_vertex_array_range2
GL_NV_vertex_buffer_unified_memory
GL_NV_vertex_program
GL_NV_vertex_program1_1
GL_NV_vertex_program2
GL_NV_vertex_program2_option
GL_NV_vertex_program3
GL_NV_vertex_program4
GL_NV_gpu_program5
GL_NV_gpu_program_fp64
GL_NV_gpu_shader5
GL_NV_tessellation_program5
GL_NV_vertex_attrib_integer_64bit
GL_NV_multisample_coverage
GL_NV_vdpau_interop
GL_NVX_gpu_memory_info

OES

GL_OES_byte_coordinates
GL_OES_compressed_paletted_texture
GL_OES_read_format
GL_OES_single_precision

OML

GL_OML_interlace
GL_OML_resample
GL_OML_subsample

PGI

GL_PGI_misc_hints
GL_PGI_vertex_hints

Rend

GL_REND_screen_coordinates

S3

GL_S3_s3tc

SGI

GL_SGIS_color_range
GL_SGIS_detail_texture
GL_SGIS_fog_function
GL_SGIS_generate_mipmap
GL_SGIS_multisample
GL_SGIS_pixel_texture
GL_SGIS_point_line_texgen
GL_SGIS_sharpen_texture
GL_SGIS_texture4D
GL_SGIS_texture_border_clamp
GL_SGIS_texture_edge_clamp
GL_SGIS_texture_filter4
GL_SGIS_texture_lod
GL_SGIS_texture_select
GL_SGIX_async
GL_SGIX_async_histogram
GL_SGIX_async_pixel
GL_SGIX_blend_alpha_minmax
GL_SGIX_clipmap
GL_SGIX_convolution_accuracy
GL_SGIX_depth_texture
GL_SGIX_flush_raster
GL_SGIX_fog_offset
GL_SGIX_fog_texture
GL_SGIX_fragment_specular_lighting
GL_SGIX_framezoom
GL_SGIX_interlace
GL_SGIX_ir_instrument1
GL_SGIX_list_priority
GL_SGIX_pixel_texture
GL_SGIX_pixel_texture_bits
GL_SGIX_reference_plane
GL_SGIX_resample
GL_SGIX_shadow
GL_SGIX_shadow_ambient
GL_SGIX_sprite
GL_SGIX_tag_sample_buffer
GL_SGIX_texture_add_env
GL_SGIX_texture_coordinate_clamp
GL_SGIX_texture_lod_bias
GL_SGIX_texture_multi_buffer
GL_SGIX_texture_range
GL_SGIX_texture_scale_bias
GL_SGIX_vertex_preclip
GL_SGIX_vertex_preclip_hint
GL_SGIX_ycrcb
GL_SGI_color_matrix
GL_SGI_color_table
GL_SGI_texture_color_table

Sun

GL_SUNX_constant_data
GL_SUN_convolution_border_modes
GL_SUN_global_alpha
GL_SUN_mesh_array
GL_SUN_read_video_pixels
GL_SUN_slice_accum
GL_SUN_triangle_list
GL_SUN_vertex

Win

GL_WIN_phong_shading
GL_WIN_specular_fog
GL_WIN_swap_hint

WGL

WGL_3DFX_multisample
WGL_3DL_stereo_control
WGL_AMD_gpu_association
WGL_ARB_buffer_region
WGL_ARB_create_context
WGL_ARB_create_context_profile
WGL_ARB_extensions_string
WGL_ARB_framebuffer_sRGB
WGL_ARB_make_current_read
WGL_ARB_multisample
WGL_ARB_pbuffer
WGL_ARB_pixel_format
WGL_ARB_pixel_format_float
WGL_ARB_render_texture
WGL_ATI_pixel_format_float
WGL_ATI_render_texture_rectangle
WGL_EXT_depth_float
WGL_EXT_display_color_table
WGL_EXT_extensions_string
WGL_EXT_framebuffer_sRGB
WGL_EXT_make_current_read
WGL_EXT_multisample
WGL_EXT_pbuffer
WGL_EXT_pixel_format
WGL_EXT_pixel_format_packed_float
WGL_EXT_swap_control
WGL_I3D_digital_video_control
WGL_I3D_gamma
WGL_I3D_genlock
WGL_I3D_image_buffer
WGL_I3D_swap_frame_lock
WGL_I3D_swap_frame_usage
WGL_NV_copy_image
WGL_NV_float_buffer
WGL_NV_gpu_affinity
WGL_NV_present_video
WGL_NV_render_depth_texture
WGL_NV_render_texture_rectangle
WGL_NV_swap_group
WGL_NV_vertex_array_range
WGL_NV_video_output
WGL_OML_sync_control
WGL_NV_multisample_coverage
WGL_ARB_create_context_robustness
WGL_EXT_create_context_es2_profile

GLX

GLX_VERSION_1_2
GLX_VERSION_1_3
GLX_VERSION_1_4
GLX_3DFX_multisample
GLX_ARB_create_context
GLX_ARB_create_context_profile
GLX_ARB_fbconfig_float
GLX_ARB_framebuffer_sRGB
GLX_ARB_get_proc_address
GLX_ARB_multisample
GLX_ARB_vertex_buffer_object
GLX_ATI_pixel_format_float
GLX_ATI_render_texture
GLX_EXT_fbconfig_packed_float
GLX_EXT_framebuffer_sRGB
GLX_EXT_import_context
GLX_EXT_scene_marker
GLX_EXT_texture_from_pixmap
GLX_EXT_visual_info
GLX_EXT_visual_rating
GLX_EXT_swap_control
GLX_INTEL_swap_event
GLX_MESA_agp_offset
GLX_MESA_copy_sub_buffer
GLX_MESA_pixmap_colormap
GLX_MESA_release_buffers
GLX_MESA_set_3dfx_mode
GLX_NV_copy_image
GLX_NV_float_buffer
GLX_NV_present_video
GLX_NV_swap_group
GLX_NV_vertex_array_range
GLX_NV_video_output
GLX_OML_swap_method
GLX_OML_sync_control
GLX_SGIS_blended_overlay
GLX_SGIS_color_range
GLX_SGIS_multisample
GLX_SGIS_shared_multisample
GLX_SGIX_fbconfig
GLX_SGIX_hyperpipe
GLX_SGIX_pbuffer
GLX_SGIX_swap_barrier
GLX_SGIX_swap_group
GLX_SGIX_video_resize
GLX_SGIX_visual_select_group
GLX_SGI_cushion
GLX_SGI_make_current_read
GLX_SGI_swap_control
GLX_SGI_video_sync
GLX_SUN_get_transparent_index
GLX_SUN_video_resize
GLX_AMD_gpu_association
GLX_NV_multisample_coverage
GLX_ARB_create_context_robustness
GLX_EXT_create_context_es2_profile

Definition at line 668 of file SoGLExtension.h.

Member Function Documentation

◆ disableExtension()

static void SoGLExtension::disableExtension ( const SbString & extension )

static

Disable a specific extension in software.

The given extension will be disabled for any subsequent calls to isAvailable and for any existing contexts.

A list of extensions can be disabled using the environment variable OIV_DISABLED_GL_EXTENSION_LIST ( see SoPreferences ).

◆ isAvailable() [1/2]

static SbBool SoGLExtension::isAvailable ( const char * extension )

static

Returns true if the extension is available.

◆ isAvailable() [2/2]

static SbBool SoGLExtension::isAvailable ( const SbString & extension )

static

Returns true if the extension is available.

The documentation for this class was generated from the following file:

Inventor/devices/SoGLExtension.h

Open Inventor Release 2023.2.3

Static Public Member Functions

Detailed Description

EXAMPLE

NOTES

Member Function Documentation

◆ disableExtension()

◆ isAvailable() [1/2]

◆ isAvailable() [2/2]