[cairo] Threaded animation with cairo_gl backend over a GtkWidget
Carlos López González
genetita at gmail.com
Tue Jan 15 15:04:33 PST 2013
The code modifications applied to the laptop gives a null surface
because glXChooseVisual returns a NULL pointer when creating the
XVisualInfo for the modified attributes. Possibly my graphic card doesn't
support those requirements.
Attached are the glxinfo output and the interesting line from lspci.
I'll test it on OSX tomorrow.
Thanks!
2013/1/15 Carlos López González <genetita at gmail.com>
> Hi Henry,
> thank you very much for your detailed reply and the code additions. I'll
> give it a try and would let you know the results.
> I considered cairogles but isn't it created for embedded systems? When it
> were added upstream, would it be suitable to be used in non embedded system?
> In case of use cairogles, where can I find its API?
> Thanks!
>
>
> 2013/1/15 Henry (Yu) Song - SISA <hsong at sisa.samsung.com>
>
> I modified your code a little as attached. Two changes
>>
>> 1. add cairo_gl_device_set_thread_aware ()
>> 2. add GLX_SAMPLES/GLX_SAMPLE_BUFFER
>>
>> 1. The first add is to reduce GL context switch if you have dedicated one
>> thread for rendering (regardless where you create your gl_surface). If you
>> have multiple threads that render to the same gl surface, you cannot
>> set_thread_aware (device, FALSE)
>>
>> 2. If your driver (proprietary nvidia, fglrx and latest intel (mesa >
>> 9.0) on sandbridge/ivybridge) supports MSAA, you might want to try our new
>> cairo which uses MSAA for antialiasing. It is at
>> http://code.google.com/p/cairogles. It is faster than gl backend in the
>> cairo upstream and we are in process of upstreaming it. It is also more
>> stable. If you want to MSAA on window/pixmap, you need to add GLX_SAMPLES
>> and GLX_SAMPLE_BUFFERS to your glx attrib. If you want to experiment more
>> complex drawing, I recommend you use our gles, it is more stable and fast
>> (I think it is the fastest backend at this moment given your driver
>> supports MSAA, and you don't want to have ANTIALIAS_BEST/subpixel). When
>> you use our cairogles, please set CAIRO_GL_COMPOSITOR=msaa in your
>> environment.
>>
>> 3. There is a caveat when you are using gl surface in cairo at this
>> moment. You need to dedicate a gl context to cairo. You cannot interleave
>> cairo with gl calls/or other library that uses the same gl context as
>> cairo. If you do that, you MUST same context/drawable/any other GL states
>> before you call gl directly and you MUST restore these before you enter
>> cairo drawing.
>>
>> Let me how pixman compare to gl in your test case, Don't have
>> radeon/nouveau drivers, not sure how they turn out.
>>
>> Henry
>> ________________________________________
>> From: cairo-bounces+hsong=sisa.samsung.com at cairographics.org[cairo-bounces+hsong=
>> sisa.samsung.com at cairographics.org] on behalf of Carlos López González [
>> genetita at gmail.com]
>> Sent: Tuesday, January 15, 2013 11:39 AM
>> To: cairo at cairographics.org
>> Subject: Re: [cairo] Threaded animation with cairo_gl backend over a
>> GtkWidget
>>
>> Hi!
>> I've modified the mentioned Cairo animation with miltithreading example
>> [1] to use a cairo_gl_surface, expecting to have some GPU acceleration. It
>> works fine (doesn't crash) but when I use a cairo_gl_surface it runs much
>> slow than when I use a image surface (!). See code here:
>> https://github.com/genete/my-test-area/blob/direct_draw/src/cairo_sample.c
>>
>> commenting the line at 135 and 137 I can use cairo_image or cairo_gl.
>>
>> Same code has been compiled and run in a iMac 2011 using XQuarz as
>> Xserver with the same result.
>>
>> Am I missing something at the cairo_gl code or simply I would never could
>> make use of my GPU in my linux laptop or my iMac?
>>
>> I appreciate any help.
>> Thanks!
>>
>> [1] http://cairographics.org/threaded_animation_with_cairo/
>>
>> 2013/1/15 Carlos López González <genetita at gmail.com<mailto:
>> genetita at gmail.com>>
>> I forgot to CC cairo list
>>
>> ---------- Forwarded message ----------
>> From: Carlos López González <genetita at gmail.com<mailto:genetita at gmail.com
>> >>
>> Date: 2013/1/15
>> Subject: Re: [cairo] Threaded animation with cairo_gl backend over a
>> GtkWidget
>> To: Uli Schlachter <psychon at znc.in<mailto:psychon at znc.in>>
>>
>>
>> Hi!
>> I've upgraded to Ubuntu 12.10 and as part of the upgrade Ubuntu disabled
>> the proprietary nvidia driver.
>> With the the nouveau driver enabled and simply enable multithreading, it
>> crash.
>>
>> carlos at laptop:~/my-test-area/build$ LANG=C ./cairo-sample
>> [xcb] Unknown request in queue while dequeuing
>> [xcb] Most likely this is a multi-threaded client and XInitThreads has
>> not been called
>> [xcb] Aborting, sorry about that.
>> cairo-sample: ../../src/xcb_io.c:178: dequeue_pending_request: Assertion
>> `!xcb_xlib_unknown_req_in_deq' failed.
>> Abortado (`core' generado)
>>
>> But when add XIniThreads() as shown in the previous post, it doesn't
>> crash but it runs *extremely* slow (?). I'm using a GeForce 8400M GS
>> graphic card (glxgears runs smoothly).
>>
>> If I enable the private nvidia-current driver it crashes in any case with
>> the same message than I had before. The suggested breakpoint or the --sync
>> option doesn't help much.
>>
>> So which are my alternatives?
>>
>> If I create the cairo_gl_surface but not using
>> cairo_gl_surface_create_for_window but the cairo_gl_create_surface, would
>> it have GPU acceleration as well?
>>
>> I just want to create a minimal example of multithreading drawing over a
>> gtkwidget using cairo_gl to later translate to a bigger application, but it
>> seems that it is impossible.
>>
>> Is there any *real* application that uses Cairo with GPU acceleration in
>> production?
>>
>> Thanks!
>>
>>
>> 2013/1/14 Uli Schlachter <psychon at znc.in<mailto:psychon at znc.in>>
>> Hi,
>>
>> On 14.01.2013 21:24, Carlos López González wrote:
>> [...]
>> > The program 'cairo-sample' received an X Window System error.
>> > This probably reflects a bug in the program.
>> > The error was 'BadMatch (invalid parameter attributes)'.
>> > (Details: serial 230 error_code 8 request_code 135 minor_code 5)
>>
>> minor_code 5 likely is DRI2's GetBuffer request, but could also be a
>> RANDRGetScreenInfo, RenderChangePicture, SHAPEQueryExtents,
>> SHMCreatePixmap or
>> SyncQueryCounter. Of course, this doesn't really help us (does it?).
>>
>> [...]
>> > (Note to programmers: normally, X errors are reported asynchronously;
>> > that is, you will receive the error a while after causing it.
>> > To debug your program, run it with the --sync command line
>> > option to change this behavior. You can then get a meaningful
>> > backtrace from your debugger if you break on the gdk_x_error()
>> function.)
>>
>> do "break gdk_x_error" before you "run" the program.
>>
>> > [Thread 0xb4738b40 (LWP 3625) exited]
>> > [Thread 0xb54ffb40 (LWP 3624) exited]
>> > [Thread 0xb6224880 (LWP 3620) exited]
>> > [Inferior 1 (process 3620) exited with code 01]
>> > (gdb) where
>> > No stack.
>> > (gdb)
>> >
>> >
>> > How can I add the --sync option?
>>
>> If the program supports this option: "run --sync".
>>
>> Uli
>> --
>> "Why make things difficult, when it is possible to make them cryptic
>> and totally illogical, with just a little bit more effort?" -- A. P. J.
>> --
>> cairo mailing list
>> cairo at cairographics.org<mailto:cairo at cairographics.org>
>> http://lists.cairographics.org/mailman/listinfo/cairo
>>
>>
>>
>> --
>> Carlos
>> http://synfig.org
>>
>>
>>
>> --
>> Carlos
>> http://synfig.org
>>
>>
>>
>> --
>> Carlos
>> http://synfig.org
>>
>
>
>
> --
> Carlos
> http://synfig.org
>
--
Carlos
http://synfig.org
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01:00.0 VGA compatible controller: NVIDIA Corporation G86 [GeForce 8400M GS] (rev a1)
-------------- next part --------------
name of display: :0
display: :0 screen: 0
direct rendering: Yes
server glx vendor string: SGI
server glx version string: 1.4
server glx extensions:
GLX_ARB_create_context, GLX_ARB_create_context_profile,
GLX_ARB_multisample, GLX_EXT_create_context_es2_profile,
GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_MESA_copy_sub_buffer, GLX_OML_swap_method,
GLX_SGI_swap_control, GLX_SGIS_multisample, GLX_SGIX_fbconfig,
GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group, GLX_INTEL_swap_event
client glx vendor string: Mesa Project and SGI
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_get_proc_address,
GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_visual_info,
GLX_EXT_visual_rating, GLX_EXT_framebuffer_sRGB,
GLX_EXT_create_context_es2_profile, GLX_MESA_copy_sub_buffer,
GLX_MESA_multithread_makecurrent, 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_create_context, GLX_ARB_create_context_profile,
GLX_ARB_get_proc_address, GLX_ARB_multisample, GLX_EXT_import_context,
GLX_EXT_visual_info, GLX_EXT_visual_rating,
GLX_EXT_create_context_es2_profile, GLX_MESA_copy_sub_buffer,
GLX_MESA_multithread_makecurrent, 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
OpenGL vendor string: nouveau
OpenGL renderer string: Gallium 0.4 on NV86
OpenGL version string: 3.0 Mesa 9.0
OpenGL shading language version string: 1.30
OpenGL extensions:
GL_ARB_multisample, GL_EXT_abgr, GL_EXT_bgra, GL_EXT_blend_color,
GL_EXT_blend_minmax, GL_EXT_blend_subtract, GL_EXT_copy_texture,
GL_EXT_polygon_offset, GL_EXT_subtexture, GL_EXT_texture_object,
GL_EXT_vertex_array, GL_EXT_compiled_vertex_array, GL_EXT_texture,
GL_EXT_texture3D, GL_IBM_rasterpos_clip, GL_ARB_point_parameters,
GL_EXT_draw_range_elements, GL_EXT_packed_pixels, GL_EXT_point_parameters,
GL_EXT_rescale_normal, GL_EXT_separate_specular_color,
GL_EXT_texture_edge_clamp, GL_SGIS_generate_mipmap,
GL_SGIS_texture_border_clamp, GL_SGIS_texture_edge_clamp,
GL_SGIS_texture_lod, GL_ARB_framebuffer_sRGB, GL_ARB_multitexture,
GL_EXT_framebuffer_sRGB, GL_IBM_multimode_draw_arrays,
GL_IBM_texture_mirrored_repeat, GL_ARB_texture_cube_map,
GL_ARB_texture_env_add, GL_ARB_transpose_matrix,
GL_EXT_blend_func_separate, GL_EXT_fog_coord, GL_EXT_multi_draw_arrays,
GL_EXT_secondary_color, GL_EXT_texture_env_add,
GL_EXT_texture_filter_anisotropic, GL_EXT_texture_lod_bias,
GL_INGR_blend_func_separate, GL_NV_blend_square, GL_NV_light_max_exponent,
GL_NV_texgen_reflection, GL_NV_texture_env_combine4, GL_S3_s3tc,
GL_SUN_multi_draw_arrays, GL_ARB_texture_border_clamp,
GL_ARB_texture_compression, GL_EXT_framebuffer_object,
GL_EXT_texture_compression_s3tc, GL_EXT_texture_env_combine,
GL_EXT_texture_env_dot3, GL_MESA_window_pos, GL_NV_packed_depth_stencil,
GL_NV_texture_rectangle, GL_ARB_depth_texture, GL_ARB_occlusion_query,
GL_ARB_shadow, GL_ARB_texture_env_combine, GL_ARB_texture_env_crossbar,
GL_ARB_texture_env_dot3, GL_ARB_texture_mirrored_repeat,
GL_ARB_window_pos, GL_EXT_stencil_two_side, GL_EXT_texture_cube_map,
GL_NV_depth_clamp, GL_NV_fog_distance, GL_APPLE_packed_pixels,
GL_APPLE_vertex_array_object, GL_ARB_draw_buffers,
GL_ARB_fragment_program, GL_ARB_fragment_shader, GL_ARB_shader_objects,
GL_ARB_vertex_program, GL_ARB_vertex_shader, GL_ATI_draw_buffers,
GL_ATI_texture_env_combine3, GL_ATI_texture_float, GL_EXT_shadow_funcs,
GL_EXT_stencil_wrap, GL_MESA_pack_invert, GL_NV_primitive_restart,
GL_ARB_depth_clamp, GL_ARB_fragment_program_shadow,
GL_ARB_half_float_pixel, GL_ARB_occlusion_query2, GL_ARB_point_sprite,
GL_ARB_shading_language_100, GL_ARB_sync, GL_ARB_texture_non_power_of_two,
GL_ARB_vertex_buffer_object, GL_ATI_blend_equation_separate,
GL_EXT_blend_equation_separate, GL_OES_read_format,
GL_ARB_color_buffer_float, GL_ARB_pixel_buffer_object,
GL_ARB_texture_compression_rgtc, GL_ARB_texture_float,
GL_ARB_texture_rectangle, GL_ATI_texture_compression_3dc,
GL_EXT_packed_float, GL_EXT_pixel_buffer_object,
GL_EXT_texture_compression_dxt1, GL_EXT_texture_compression_rgtc,
GL_EXT_texture_mirror_clamp, GL_EXT_texture_rectangle,
GL_EXT_texture_sRGB, GL_EXT_texture_shared_exponent,
GL_ARB_framebuffer_object, GL_EXT_framebuffer_blit,
GL_EXT_framebuffer_multisample, GL_EXT_packed_depth_stencil,
GL_ARB_vertex_array_object, GL_ATI_separate_stencil,
GL_ATI_texture_mirror_once, GL_EXT_draw_buffers2, GL_EXT_draw_instanced,
GL_EXT_gpu_program_parameters, GL_EXT_texture_array,
GL_EXT_texture_compression_latc, GL_EXT_texture_integer,
GL_EXT_texture_sRGB_decode, GL_EXT_timer_query, GL_OES_EGL_image,
GL_MESA_texture_array, GL_ARB_copy_buffer, GL_ARB_depth_buffer_float,
GL_ARB_draw_instanced, GL_ARB_half_float_vertex, GL_ARB_instanced_arrays,
GL_ARB_map_buffer_range, GL_ARB_texture_rg, GL_ARB_texture_swizzle,
GL_ARB_vertex_array_bgra, GL_EXT_separate_shader_objects,
GL_EXT_texture_swizzle, GL_EXT_vertex_array_bgra,
GL_NV_conditional_render, GL_AMD_conservative_depth,
GL_ARB_ES2_compatibility, GL_ARB_blend_func_extended, GL_ARB_debug_output,
GL_ARB_draw_elements_base_vertex, GL_ARB_explicit_attrib_location,
GL_ARB_fragment_coord_conventions, GL_ARB_provoking_vertex,
GL_ARB_sampler_objects, GL_ARB_shader_texture_lod,
GL_EXT_provoking_vertex, GL_EXT_texture_snorm,
GL_MESA_texture_signed_rgba, GL_NV_texture_barrier, GL_ARB_robustness,
GL_ARB_shader_bit_encoding, GL_ARB_timer_query, GL_ARB_base_instance,
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GL_EXT_transform_feedback, GL_ARB_invalidate_subdata
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0x07e 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x07f 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x080 32 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x081 24 tc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x082 24 tc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x083 24 tc 0 24 0 r . . 8 8 8 0 . . 0 0 0 16 16 16 0 0 0 Slow
0x084 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x085 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 16 16 16 0 0 0 Slow
0x086 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x087 24 tc 0 24 0 r y . 8 8 8 0 . . 0 0 0 16 16 16 0 0 0 Slow
0x088 24 tc 0 24 0 r . . 8 8 8 0 . . 0 24 0 0 0 0 0 0 0 None
0x089 24 tc 0 24 0 r . . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
0x08a 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 0 0 0 0 0 0 0 None
0x08b 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
0x08c 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 0 0 0 0 0 0 0 None
0x08d 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
0x08e 24 tc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x08f 24 tc 0 24 0 r . . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x090 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x091 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x092 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x093 24 tc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x094 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x095 24 dc 0 32 0 r . . 8 8 8 8 . . 0 0 0 16 16 16 16 0 0 Slow
0x096 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x097 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 16 16 16 16 0 0 Slow
0x098 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 0 0 0 0 0 0 None
0x099 24 dc 0 32 0 r y . 8 8 8 8 . . 0 0 0 16 16 16 16 0 0 Slow
0x09a 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 0 0 0 0 0 0 0 None
0x09b 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 0 16 16 16 16 0 0 Slow
0x09c 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 0 0 0 0 0 0 0 None
0x09d 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 0 16 16 16 16 0 0 Slow
0x09e 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 0 0 0 0 0 0 0 None
0x09f 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 0 16 16 16 16 0 0 Slow
0x0a0 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x0a1 24 dc 0 32 0 r . . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x0a2 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x0a3 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x0a4 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 0 0 0 0 0 0 None
0x0a5 24 dc 0 32 0 r y . 8 8 8 8 . . 0 24 8 16 16 16 16 0 0 Slow
0x0a6 24 dc 0 24 0 r . . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x0a7 24 dc 0 24 0 r . . 8 8 8 0 . . 0 0 0 16 16 16 0 0 0 Slow
0x0a8 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x0a9 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 16 16 16 0 0 0 Slow
0x0aa 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 0 0 0 0 0 0 None
0x0ab 24 dc 0 24 0 r y . 8 8 8 0 . . 0 0 0 16 16 16 0 0 0 Slow
0x0ac 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 0 0 0 0 0 0 0 None
0x0ad 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
0x0ae 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 0 0 0 0 0 0 0 None
0x0af 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
0x0b0 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 0 0 0 0 0 0 0 None
0x0b1 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 0 16 16 16 0 0 0 Slow
0x0b2 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x0b3 24 dc 0 24 0 r . . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x0b4 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x0b5 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
0x0b6 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 0 0 0 0 0 0 None
0x0b7 24 dc 0 24 0 r y . 8 8 8 0 . . 0 24 8 16 16 16 0 0 0 Slow
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