Hi,
I have a GTKmm application that uses two separate OpenGL widgets
within the same window. When running under Compiz, I am getting some
strange behaviour. Everything is fine when it is disabled.
Essentially what happens is that any resize of the widgets causes X to
hang for a second or two. After that, one of the OpenGL windows no
longer gets properly updated.
I've attached a single example in C using GTK+ & GtkGLExt to
demonstrate the problem. Maybe someone else can reproduce it. To
compile:
gcc opengl_multiple_context.c `pkg-config gtk+-2.0,gtkglext-1.0 --libs
--cflags`
This opens a window with two OpenGL contexts in a HPaned widget. Just
drag the separator handle across to get the odd behaviour.
Obviously I can't rule out a bug in GtkGLExt, but the fact that the
problem only occurs within compiz suggests that it isn't GtkGLExt.
Besides, I have no idea what other toolkit I could use to open a
window with two OpenGL contexts in it... Maybe Qt?
Another point of note is that I am using a NVIDIA GeForce 8800 with
the NVIDIA restricted drivers...
I've attached all the information that I thought could be relevant below.
Thanks!
Donald.
My setup is the following:
Ubuntu Hardy 8.04 (all default packages)
NVIDIA GeForce 8800 GTS 512 (driver version: 169.12)
compiz 1:0.7.4-0ubuntu7
uname -a:
Linux donald-desktop 2.6.24-19-generic #1 SMP Wed Jun 18 14:43:41 UTC
2008 i686 GNU/Linux
lspci -v -v:
01:00.0 VGA compatible controller: nVidia Corporation GeForce 8800 GTS
512 (rev a2) (prog-if 00 [VGA controller])
Subsystem: Giga-byte Technology Unknown device 3473
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR-
Latency: 0
Interrupt: pin A routed to IRQ 16
Region 0: Memory at f6000000 (32-bit, non-prefetchable) [size=16M]
Region 1: Memory at e0000000 (64-bit, prefetchable) [size=256M]
Region 3: Memory at f4000000 (64-bit, non-prefetchable) [size=32M]
Region 5: I/O ports at a000 [size=128]
[virtual] Expansion ROM at f7000000 [disabled] [size=128K]
Capabilities: [60] Power Management version 3
Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [68] Message Signalled Interrupts: Mask- 64bit+
Queue=0/0 Enable-
Address: 0000000000000000 Data: 0000
Capabilities: [78] Express Endpoint IRQ 0
Device: Supported: MaxPayload 128 bytes, PhantFunc 0, ExtTag+
Device: Latency L0s <512ns, L1 <4us
Device: AtnBtn- AtnInd- PwrInd-
Device: Errors: Correctable- Non-Fatal- Fatal- Unsupported-
Device: RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+
Device: MaxPayload 128 bytes, MaxReadReq 512 bytes
Link: Supported Speed unknown, Width x16, ASPM L0s L1, Port 0
Link: Latency L0s <512ns, L1 <1us
Link: ASPM Disabled RCB 128 bytes CommClk+ ExtSynch-
Link: Speed 2.5Gb/s, Width x16
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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_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
GLX_EXT_texture_from_pixmap, GLX_ARB_multisample, GLX_NV_float_buffer,
GLX_ARB_fbconfig_float, GLX_EXT_framebuffer_sRGB
client glx vendor string: NVIDIA Corporation
client glx version string: 1.4
client glx extensions:
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_EXT_import_context, GLX_SGI_video_sync,
GLX_NV_swap_group, GLX_NV_video_out, GLX_SGIX_fbconfig, GLX_SGIX_pbuffer,
GLX_SGI_swap_control, GLX_NV_float_buffer, GLX_ARB_fbconfig_float,
GLX_EXT_fbconfig_packed_float, GLX_EXT_texture_from_pixmap,
GLX_EXT_framebuffer_sRGB
GLX version: 1.3
GLX extensions:
GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGI_video_sync, GLX_SGI_swap_control,
GLX_EXT_texture_from_pixmap, GLX_ARB_multisample, GLX_NV_float_buffer,
GLX_ARB_fbconfig_float, GLX_EXT_framebuffer_sRGB,
GLX_ARB_get_proc_address
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 8800 GTS 512/PCI/SSE2
OpenGL version string: 2.1.2 NVIDIA 169.12
OpenGL extensions:
GL_ARB_color_buffer_float, GL_ARB_depth_texture, GL_ARB_draw_buffers,
GL_ARB_fragment_program, GL_ARB_fragment_program_shadow,
GL_ARB_fragment_shader, GL_ARB_half_float_pixel, GL_ARB_imaging,
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_shadow, GL_ARB_shader_objects, GL_ARB_shading_language_100,
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_dot3, GL_ARB_texture_float,
GL_ARB_texture_mirrored_repeat, GL_ARB_texture_non_power_of_two,
GL_ARB_texture_rectangle, GL_ARB_transpose_matrix,
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_S3_s3tc, GL_EXT_texture_env_add,
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_Cg_shader, GL_EXT_bindable_uniform, GL_EXT_depth_bounds_test,
GL_EXT_draw_buffers2, GL_EXT_draw_instanced, GL_EXT_draw_range_elements,
GL_EXT_fog_coord, GL_EXT_framebuffer_blit, GL_EXT_framebuffer_multisample,
GL_EXT_framebuffer_object, GL_EXTX_framebuffer_mixed_formats,
GL_EXT_framebuffer_sRGB, GL_EXT_geometry_shader4,
GL_EXT_gpu_program_parameters, GL_EXT_gpu_shader4,
GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil,
GL_EXT_packed_float, GL_EXT_packed_pixels, GL_EXT_pixel_buffer_object,
GL_EXT_point_parameters, GL_EXT_rescale_normal, GL_EXT_secondary_color,
GL_EXT_separate_specular_color, GL_EXT_shadow_funcs,
GL_EXT_stencil_two_side, GL_EXT_stencil_wrap, GL_EXT_texture3D,
GL_EXT_texture_array, GL_EXT_texture_buffer_object,
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_combine,
GL_EXT_texture_env_dot3, GL_EXT_texture_filter_anisotropic,
GL_EXT_texture_integer, 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_shared_exponent, GL_EXT_timer_query, GL_EXT_vertex_array,
GL_IBM_rasterpos_clip, GL_IBM_texture_mirrored_repeat,
GL_KTX_buffer_region, GL_NV_blend_square, GL_NV_copy_depth_to_color,
GL_NV_depth_buffer_float, GL_NV_conditional_render, GL_NV_depth_clamp,
GL_NV_fence, GL_NV_float_buffer, GL_NV_fog_distance,
GL_NV_fragment_program, GL_NV_fragment_program_option,
GL_NV_fragment_program2, GL_NV_framebuffer_multisample_coverage,
GL_NV_geometry_shader4, GL_NV_gpu_program4, GL_NV_half_float,
GL_NV_light_max_exponent, GL_NV_multisample_coverage,
GL_NV_multisample_filter_hint, GL_NV_occlusion_query,
GL_NV_packed_depth_stencil, GL_NV_parameter_buffer_object,
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_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_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_NVX_conditional_render, GL_SGIS_generate_mipmap,
GL_SGIS_texture_lod, GL_SGIX_depth_texture, GL_SGIX_shadow,
GL_SUN_slice_accum
visual x bf lv rg d st colorbuffer ax dp st accumbuffer ms cav
id dep cl sp sz l ci b ro r g b a bf th cl r g b a ns b eat
----------------------------------------------------------------------
0x21 24 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 0 0 None
0x22 24 dc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 0 0 None
0x24 24 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x25 24 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 0 0 None
0x26 24 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x27 24 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x28 24 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x29 24 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x2a 24 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x2b 24 tc 0 32 0 r y . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x2c 24 tc 0 32 0 r y . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x2d 24 tc 0 32 0 r . . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x2e 24 tc 0 32 0 r . . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x2f 24 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x30 24 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x31 24 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x32 24 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x33 24 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x34 24 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x35 24 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x36 24 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x37 24 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x38 24 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x39 24 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x3a 24 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x3b 24 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x3c 24 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x3d 24 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x3e 24 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x3f 24 dc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x40 24 dc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 0 0 None
0x41 24 dc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x42 24 dc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x43 24 dc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x44 24 dc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x45 24 dc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x46 24 dc 0 32 0 r y . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x47 24 dc 0 32 0 r y . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x48 24 dc 0 32 0 r . . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x49 24 dc 0 32 0 r . . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x4a 24 dc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x4b 24 dc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x4c 24 dc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x4d 24 dc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x4e 24 dc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x4f 24 dc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x50 24 dc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x51 24 dc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x52 24 dc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x53 24 dc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x54 24 dc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x55 24 dc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x56 24 dc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x57 24 dc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x58 24 dc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x59 24 dc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x23 32 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 0 0 None
0x5a 32 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x5b 32 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 0 0 None
0x5c 32 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x5d 32 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x5e 32 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x5f 32 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x60 32 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x61 32 tc 0 32 0 r y . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x62 32 tc 0 32 0 r y . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x63 32 tc 0 32 0 r . . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x64 32 tc 0 32 0 r . . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x65 32 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x66 32 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x67 32 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x68 32 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x69 32 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x6a 32 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x6b 32 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x6c 32 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x6d 32 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x6e 32 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x6f 32 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x70 32 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x71 32 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x72 32 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x73 32 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x74 32 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
