qt openGL support on linux
i wan't to know if i have opeGL support on my linux, and i don't know how to do that. i need to run a qt application written with openGL, but the CPU consumption is very high...
what can i check, and how exactly?
this is the output for glxinfo:
----------------------------------
name of display: :0.0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
GLX_ARB_multisample, GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_OML_swap_method,
GLX_SGI_make_current_read, GLX_SGIS_multisample, GLX_SGIX_hyperpipe,
GLX_SGIX_swap_barrier, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_MESA_copy_sub_buffer, GLX_INTEL_swap_event
client glx vendor string: Mesa Project and SGI
client glx version string: 1.4
client glx extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer,
GLX_MESA_swap_control, GLX_OML_swap_method, GLX_OML_sync_control,
GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGI_video_sync,
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap,
GLX_INTEL_swap_event
GLX version: 1.4
GLX extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_OML_swap_method,
GLX_SGIS_multisample, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_INTEL_swap_event
OpenGL vendor string: Mesa Project
OpenGL renderer string: Software Rasterizer
OpenGL version string: 2.1 Mesa 7.9-devel
OpenGL shading language version string: 1.20
OpenGL extensions:
GL_ARB_copy_buffer, GL_ARB_depth_clamp, GL_ARB_depth_texture,
GL_ARB_draw_buffers, GL_ARB_draw_elements_base_vertex,
GL_ARB_fragment_coord_conventions, GL_ARB_fragment_program,
GL_ARB_fragment_program_shadow, GL_ARB_fragment_shader,
GL_ARB_framebuffer_object, GL_ARB_half_float_pixel,
GL_ARB_half_float_vertex, GL_ARB_imaging, GL_ARB_map_buffer_range,
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_shader_objects,
GL_ARB_shading_language_100, GL_ARB_shadow, GL_ARB_shadow_ambient,
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_mirrored_repeat,
GL_ARB_texture_non_power_of_two, GL_ARB_texture_rectangle,
GL_ARB_texture_swizzle, 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_EXT_abgr, GL_EXT_bgra, 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_compiled_vertex_array, GL_EXT_convolution, GL_EXT_copy_texture,
GL_EXT_depth_bounds_test, GL_EXT_draw_buffers2,
GL_EXT_draw_range_elements, GL_EXT_framebuffer_blit,
GL_EXT_framebuffer_multisample, GL_EXT_framebuffer_object,
GL_EXT_fog_coord, GL_EXT_gpu_program_parameters, GL_EXT_histogram,
GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil,
GL_EXT_packed_pixels, GL_EXT_paletted_texture, GL_EXT_pixel_buffer_object,
GL_EXT_point_parameters, GL_EXT_polygon_offset, GL_EXT_provoking_vertex,
GL_EXT_rescale_normal, GL_EXT_secondary_color,
GL_EXT_separate_specular_color, GL_EXT_shadow_funcs,
GL_EXT_shared_texture_palette, 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_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_lod_bias,
GL_EXT_texture_mirror_clamp, GL_EXT_texture_object,
GL_EXT_texture_rectangle, GL_EXT_texture_sRGB, GL_EXT_texture_swizzle,
GL_EXT_vertex_array, GL_EXT_vertex_array_bgra,
GL_3DFX_texture_compression_FXT1, GL_APPLE_packed_pixels,
GL_APPLE_vertex_array_object, GL_APPLE_object_purgeable,
GL_ATI_blend_equation_separate, GL_ATI_envmap_bumpmap,
GL_ATI_texture_env_combine3, GL_ATI_texture_mirror_once,
GL_ATI_fragment_shader, GL_ATI_separate_stencil,
GL_IBM_multimode_draw_arrays, GL_IBM_rasterpos_clip,
GL_IBM_texture_mirrored_repeat, GL_INGR_blend_func_separate,
GL_MESA_pack_invert, GL_MESA_resize_buffers, GL_MESA_texture_array,
GL_MESA_ycbcr_texture, GL_MESA_window_pos, GL_NV_blend_square,
GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_fragment_program,
GL_NV_fragment_program_option, GL_NV_light_max_exponent,
GL_NV_packed_depth_stencil, GL_NV_point_sprite, GL_NV_texgen_reflection,
GL_NV_texture_env_combine4, GL_NV_texture_rectangle, GL_NV_vertex_program,
GL_NV_vertex_program1_1, GL_OES_read_format, GL_SGI_color_matrix,
GL_SGI_color_table, GL_SGI_texture_color_table, GL_SGIS_generate_mipmap,
GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp,
GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays
64 GLX Visuals
visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat
----------------------------------------------------------------------------
0x021 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
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0x0cc 24 tc 0 24 0 r . . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
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0x0d5 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
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0x0d7 24 tc 0 32 0 r . . 8 8 8 8 . . 0 0 8 0 0 0 0 0 0 None
0x0d8 24 tc 0 32 0 r . . 8 8 8 8 . . 0 0 8 16 16 16 16 0 0 Slow
0x0d9 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 8 0 0 0 0 0 0 None
0x0da 24 tc 0 32 0 r y . 8 8 8 8 . . 0 0 8 16 16 16 16 0 0 Slow
0x0db 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 0 0 0 0 0 0 0 None
0x0dc 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 0 16 16 16 16 0 0 Slow
0x0dd 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 0 16 16 16 16 0 0 Slow
0x0de 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
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0x0e3 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
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0x0e5 24 dc 0 24 0 r . . 8 8 8 0 . . 0 0 8 0 0 0 0 0 0 None
0x0e6 24 dc 0 24 0 r . . 8 8 8 0 . . 0 0 8 16 16 16 0 0 0 Slow
0x0e7 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 8 0 0 0 0 0 0 None
0x0e8 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 8 16 16 16 0 0 0 Slow
0x0e9 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 0 0 0 0 0 0 0 None
0x0ea 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
0x0eb 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 0 0 0 0 0 0 0 None
0x0ec 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
0x0ed 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x0ee 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x0ef 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x0f0 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x0f1 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x0f2 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 16 16 16 16 0 0 Slow
0x0f3 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x0f4 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 16 16 16 16 0 0 Slow
0x0f5 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 8 0 0 0 0 0 0 None
0x0f6 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 8 16 16 16 16 0 0 Slow
0x0f7 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 8 0 0 0 0 0 0 None
0x0f8 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 8 16 16 16 16 0 0 Slow
0x0f9 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 0 0 0 0 0 0 0 None
0x0fa 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 0 16 16 16 16 0 0 Slow
0x0fb 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 0 0 0 0 0 0 0 None
0x0fc 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 0 16 16 16 16 0 0 Slow
0x0fd 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x0fe 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x0ff 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x100 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x042 32 tc 0 32 0 r y . 8 8 8 8 . . 0 24 0 0 0 0 0 0 0 None
128 GLXFBConfigs:
visual x bf lv rg d st colorbuffer sr ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a F gb bf th cl r g b a ns b eat
----------------------------------------------------------------------------
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0x047 0 tc 0 8 0 r . . 3 3 2 0 . . 0 0 8 0 0 0 0 0 0 None
0x048 0 tc 0 8 0 r . . 3 3 2 0 . . 0 0 8 16 16 16 0 0 0 Slow
0x049 0 tc 0 8 0 r y . 3 3 2 0 . . 0 0 8 0 0 0 0 0 0 None
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0x07f 24 tc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
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0x0ae 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
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0x0b5 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x0b6 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 16 16 16 16 0 0 Slow
0x0b7 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 8 0 0 0 0 0 0 None
0x0b8 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 8 16 16 16 16 0 0 Slow
0x0b9 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 8 0 0 0 0 0 0 None
0x0ba 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 8 16 16 16 16 0 0 Slow
0x0bb 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 0 0 0 0 0 0 0 None
0x0bc 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 0 16 16 16 16 0 0 Slow
0x0bd 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 0 0 0 0 0 0 0 None
0x0be 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 0 16 16 16 16 0 0 Slow
0x0bf 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x0c0 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x0c1 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x0c2 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
lspci output:
--------------
00:00.0 Host bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX Host bridge (rev 01)
00:01.0 PCI bridge: Intel Corporation 440BX/ZX/DX - 82443BX/ZX/DX AGP bridge (rev 01)
00:07.0 ISA bridge: Intel Corporation 82371AB/EB/MB PIIX4 ISA (rev 08)
00:07.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:07.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 08)
00:07.7 System peripheral: VMware Virtual Machine Communication Interface (rev 10)
00:0f.0 VGA compatible controller: VMware SVGA II Adapter
00:10.0 SCSI storage controller: LSI Logic / Symbios Logic 53c1030 PCI-X Fusion-MPT Dual Ultra320 SCSI (rev 01)
00:11.0 PCI bridge: VMware PCI bridge (rev 02)
00:15.0 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.1 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.2 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.3 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.4 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.5 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.6 PCI bridge: VMware PCI Express Root Port (rev 01)
00:15.7 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.0 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.1 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.2 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.3 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.4 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.5 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.6 PCI bridge: VMware PCI Express Root Port (rev 01)
00:16.7 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.0 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.1 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.2 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.3 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.4 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.5 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.6 PCI bridge: VMware PCI Express Root Port (rev 01)
00:17.7 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.0 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.1 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.2 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.3 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.4 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.5 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.6 PCI bridge: VMware PCI Express Root Port (rev 01)
00:18.7 PCI bridge: VMware PCI Express Root Port (rev 01)
02:00.0 USB Controller: Intel Corporation 82371AB/EB/MB PIIX4 USB
02:01.0 Ethernet controller: Advanced Micro Devices [AMD] 79c970 [PCnet32 LANCE] (rev 10)
02:02.0 Multimedia audio controller: Ensoniq ES1371 [AudioPCI-97] (rev 02)
02:03.0 USB Controller: VMware USB2 EHCI Controller
direct rendering: Yes
Direct rendering means the application bypasses the XServer to display its thing on the screen. It is not synonymous with hardware acceleration, as the computation can still be done by the application in software form before being displayed.
OpenGL renderer string: Software Rasterizer
Software rasterizer means your OpenGL is not hardware accelerated, and the mesa driver has to compute everything on the CPU before it can render it directly on the screen. Therefore, an OpenGL application will be slow on such a system as the CPU will do most of the number crunching, as opposed to the GPU.
A hardware accelerated setup will display the name of the video card driver's renderer. Here are 2 examples of strings you should expect to see if your setup supports hardware acceleration :
ATI radeon :
OpenGL renderer string: ATI Radeon 3000 Graphics
Intel :
OpenGL renderer string: Mesa DRI Intel(R) 915G GEM 20091221 2009Q4 x86/MMX/SSE2
You can use glxinfo utility from mesa-utils package (actual name of a package depends on particular GNU/Linux distribution you use)
glxinfo | grep "direct rendering"
If it say Yes, then OpenGL is hardware accelerated.
You should also check if QGLFormat::directRendering() is set to true, which is default value.
Download (or install using your package manager of choice) glew and run glewinfo which will say something like:
OpenGL version 3.3.0 NVIDIA 260.19.36 is supported
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