Am Donnerstag, den 29.12.2005, 20:40 -0500 schrieb Adam K Kirchhoff: [snip] > > What's really bizarre, however, is that if I set hw.dri.0.debug to 1, > > glxgears gets roughly 200 FPS, faster than software Mesa, but slower > > than it can get (undoubtedly due to the massive amounts of debugging > > information that the kernel is logging). > > > > I tried a few more GL programs, all from the xscreensaver package. > > glforestfire also appear to display less than a frame per second. > > Same with flip-flop and flyingtoasters. flurry, on the other hand, is > > quite smooth and the FPS meter shows roughly 30 fps. > > > > Any ideas? Thanks! > > > So not only does setting the debug sysctl seem to affect the framerate, > so does displaying the framerate within the application. If I launch > any of those xscreensaver apps with the -fps option (including flurry, > glforestfire, flipflop, queens, and flyingtoasters), I get quite > reasonable framerates. If I launch them without the -fps option, I get > 1 FPS if I'm lucky (and I mean that literally... The window only > updates itself once every second, if that).
-fps causes a software fallback which implies a glFinish. Without -fps it hits no software fallbacks and interrupt-based frame-throttling will be used. Maybe interrupts get lost so that you time-out in the frame-throttling code (radeon_wait_irq has a 3-second time-out ATM). That would explain low frame rates. With debugging output the waiting condition is probably true when it gets to radeon_wait_irq most of the time, so it doesn't have to wait -> no time-out. Can you try playing with the fthrottle_mode option to test that theory anyway. fthrottle_mode=0 glxgears would run glxgears with busy-waiting instead of interrupts. Regards, Felix > > Here's the output from 'glxgears -info' with LIBGL_DEBUG set to verbose: > > [ [EMAIL PROTECTED] - ~ ]: glxgears -info > libGL: XF86DRIGetClientDriverName: 4.0.1 radeon (screen 0) > libGL: OpenDriver: trying /usr/X11R6/lib/modules/dri/radeon_dri.so > drmOpenByBusid: Searching for BusID pci:0000:01:05.0 > drmOpenDevice: node name is /dev/dri/card0 > drmOpenDevice: open result is 4, (OK) > drmOpenByBusid: drmOpenMinor returns 4 > drmOpenByBusid: drmGetBusid reports pci:0000:01:05.0 > libGL error: > Can't open configuration file /etc/drirc: No such file or directory. > GL_MAX_VIEWPORT_DIMS=4096/4096 > GL_RENDERER = Mesa DRI Radeon 20051013 AGP 4x NO-TCL > GL_VERSION = 1.3 Mesa 6.5 > GL_VENDOR = Tungsten Graphics, Inc. > GL_EXTENSIONS = GL_ARB_imaging GL_ARB_multisample GL_ARB_multitexture > 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_rectangle GL_ARB_transpose_matrix GL_ARB_window_pos > GL_EXT_abgr GL_EXT_bgra GL_EXT_blend_color GL_EXT_blend_logic_op > GL_EXT_blend_minmax GL_EXT_blend_subtract GL_EXT_clip_volume_hint > GL_EXT_compiled_vertex_array GL_EXT_convolution GL_EXT_copy_texture > GL_EXT_draw_range_elements GL_EXT_fog_coord GL_EXT_histogram > GL_EXT_packed_depth_stencil GL_EXT_packed_pixels GL_EXT_polygon_offset > GL_EXT_rescale_normal GL_EXT_secondary_color > GL_EXT_separate_specular_color GL_EXT_stencil_wrap GL_EXT_subtexture > GL_EXT_texture GL_EXT_texture3D GL_EXT_texture_compression_s3tc > 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_lod_bias > GL_EXT_texture_mirror_clamp GL_EXT_texture_object > GL_EXT_texture_rectangle GL_EXT_vertex_array GL_APPLE_packed_pixels > GL_ATI_texture_env_combine3 GL_ATI_texture_mirror_once > GL_IBM_rasterpos_clip GL_IBM_texture_mirrored_repeat > GL_MESA_ycbcr_texture GL_MESA_window_pos GL_NV_blend_square > GL_NV_light_max_exponent GL_NV_texture_rectangle GL_NV_texgen_reflection > GL_OES_read_format GL_SGI_color_matrix GL_SGI_color_table > GL_SGIS_generate_mipmap GL_SGIS_texture_border_clamp > GL_SGIS_texture_edge_clamp GL_SGIS_texture_lod GL_S3_s3tc > 177 frames in 7.0 seconds = 25.286 FPS > 4 frames in 6.0 seconds = 0.667 FPS > 7 frames in 7.0 seconds = 1.000 FPS > > Adam > -- | Felix Kühling <[EMAIL PROTECTED]> http://fxk.de.vu | | PGP Fingerprint: 6A3C 9566 5B30 DDED 73C3 B152 151C 5CC1 D888 E595 | ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_idv37&alloc_id865&op=click -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
