[driver bug]bug in recreating OpenGL device under Linux

squisher · Post by **squisher** » Mon Feb 09, 2009 6:44 pm

Hi,

The following code, a variation of the helloworld example, reproduces my problem:

#include <irrlicht.h>
using namespace irr;
using namespace core;
using namespace scene;
using namespace video;
using namespace io;
using namespace gui;

IrrlichtDevice *device;
IVideoDriver* driver;
ISceneManager* smgr;
IGUIEnvironment* guienv;
IAnimatedMesh* mesh;
IAnimatedMeshSceneNode* node;
ITimer* timer;

void init()
{
        device = createDevice( video::EDT_OPENGL, dimension2d<s32>(640, 480), 16, false, false, false, 0);
        driver = device->getVideoDriver();
        smgr = device->getSceneManager();
        guienv = device->getGUIEnvironment();

        device->setWindowCaption(L"Hello World! - Irrlicht Engine Demo");
        guienv->addStaticText(L"Hello World! This is the Irrlicht Software renderer!", rect<s32>(10,10,260,22), true);
        mesh = smgr->getMesh("../../media/sydney.md2");
        node = smgr->addAnimatedMeshSceneNode( mesh );
        node->setMaterialFlag(EMF_LIGHTING, false);
        node->setMD2Animation(scene::EMAT_STAND);
        node->setMaterialTexture( 0, driver->getTexture("../../media/sydney.bmp") );
        smgr->addCameraSceneNode(0, vector3df(0,30,-40), vector3df(0,5,0));
        timer = device->getTimer();
}

int main()
{
        init();
        s32 startTime = timer->getRealTime();

        while(device->run())
        {
                s32 now = timer->getRealTime();
                if (now - startTime > 2500)
                {
                        device->closeDevice();
                        device->run();
                        device->drop();
                        init();
                        device->run();
                        startTime = now;
                }

                ///////////////////
                driver->beginScene(true, true, SColor(255,100,101,140));

                smgr->drawAll();
                guienv->drawAll();

                driver->endScene();
        }
        device->drop();
        return 0;
}

The first iteration works every time -- I see an animated sydney.
Every subsequent iteration works maybe 1 out of 5 times.
The remaining 4 out of 5 times, a window is created, the title correctly displays, but nothing is drawn. All I see is my desktop underneath.

EDT_BURNINGSVIDEO and EDT_SOFTWARE work flawlessly, and I can recreate them endlessly. When i go back to EDT_OPENGL, it almost never draws correctly after recreation.

Output from burnings video:

Code: Select all

Irrlicht Engine version 1.5
Linux 2.6.25.11-60.fc8 #1 SMP Mon Jul 21 02:06:29 EDT 2008 i686
Creating X window...
Visual chosen: : 33
Loaded mesh: ../../media/sydney.md2
Loaded texture: /home/kyle/irrlicht-1.5/media/sydney.bmp
Irrlicht Engine version 1.5
Linux 2.6.25.11-60.fc8 #1 SMP Mon Jul 21 02:06:29 EDT 2008 i686
Creating X window...
Visual chosen: : 33
Loaded mesh: ../../media/sydney.md2
Loaded texture: /home/kyle/irrlicht-1.5/media/sydney.bmp
Irrlicht Engine version 1.5
Linux 2.6.25.11-60.fc8 #1 SMP Mon Jul 21 02:06:29 EDT 2008 i686
Creating X window...
Visual chosen: : 33
Loaded mesh: ../../media/sydney.md2
Loaded texture: /home/kyle/irrlicht-1.5/media/sydney.bmp
...

Output from OpenGL:

Code: Select all

Irrlicht Engine version 1.5
Linux 2.6.25.11-60.fc8 #1 SMP Mon Jul 21 02:06:29 EDT 2008 i686
Creating X window...
Visual chosen: : 39
Using renderer: OpenGL 2.1.2
GeForce FX 5200/PCI/SSE2: NVIDIA Corporation
OpenGL driver version is 1.2 or better.
GLSL version: 1.3
Loaded mesh: ../../media/sydney.md2
Loaded texture: /home/kyle/irrlicht-1.5/media/sydney.bmp
Irrlicht Engine version 1.5
Linux 2.6.25.11-60.fc8 #1 SMP Mon Jul 21 02:06:29 EDT 2008 i686
Creating X window...
Visual chosen: : 39
Using renderer: OpenGL 2.1.2
GeForce FX 5200/PCI/SSE2: NVIDIA Corporation
OpenGL driver version is 1.2 or better.
GLSL version: 1.3
Loaded mesh: ../../media/sydney.md2
Loaded texture: /home/kyle/irrlicht-1.5/media/sydney.bmp

rogerborg · Post by **rogerborg** » Mon Feb 09, 2009 7:35 pm

Thanks for the great test app! I'm hoping that one of the native Linux guys can have a look into this, but failing that I'll fire up VmWare.

squisher · Post by **squisher** » Tue Feb 17, 2009 9:13 pm

just hoping this didnt get forgotten

squisher · Post by **squisher** » Mon Mar 02, 2009 5:09 pm

bitplane · Post by **bitplane** » Mon Mar 02, 2009 5:58 pm

If you add it to the tracker with a link back to this thread, it can never be forgotten

squisher · Post by **squisher** » Fri Mar 13, 2009 4:08 pm

bitplane wrote:If you add it to the tracker with a link back to this thread, it can never be forgotten

Done

https://sourceforge.net/tracker/index.p ... tid=540676

hybrid · Post by **hybrid** » Mon Mar 16, 2009 4:21 pm

Couldn't reproduce this here, although I've almost the same setup. One thing I noticed is that there's a different visual chosen. Could you please post the output from glxinfo here, so I can see which visual parameters are used. Also make sure that it's not a hw driver problem, maybe update or downgrade the nv driver.

CuteAlien · Post by **CuteAlien** » Mon Jul 13, 2009 1:37 am

I can reproduce that problem on my system with current svn trunk. The example can even be further reduced by throwing out the mesh & node stuff. The same visual (39) was chosen here and my glxinfo is:

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_create_context, GLX_ARB_multisample,
GLX_NV_float_buffer, GLX_ARB_fbconfig_float
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_ARB_create_context, GLX_NV_float_buffer,
GLX_ARB_fbconfig_float, GLX_EXT_fbconfig_packed_float,
GLX_EXT_texture_from_pixmap, GLX_EXT_framebuffer_sRGB,
GLX_NV_present_video, GLX_NV_multisample_coverage
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_create_context, GLX_ARB_multisample,
GLX_NV_float_buffer, GLX_ARB_fbconfig_float, GLX_ARB_get_proc_address
OpenGL vendor string: NVIDIA Corporation
OpenGL renderer string: GeForce 6200/AGP/SSE/3DNOW!
OpenGL version string: 2.1.2 NVIDIA 180.51
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_half_float_vertex,
GL_ARB_framebuffer_object, 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_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_array_object, 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_depth_bounds_test,
GL_EXT_direct_state_access, GL_EXT_draw_range_elements, GL_EXT_fog_coord,
GL_EXT_framebuffer_blit, GL_EXT_framebuffer_multisample,
GL_EXT_framebuffer_object, GL_EXT_gpu_program_parameters,
GL_EXT_multi_draw_arrays, GL_EXT_packed_depth_stencil,
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_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_lod, GL_EXT_texture_lod_bias, GL_EXT_texture_mirror_clamp,
GL_EXT_texture_object, GL_EXT_texture_sRGB, GL_EXT_texture_swizzle,
GL_EXT_timer_query, GL_EXT_vertex_array, GL_EXT_vertex_array_bgra,
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_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_half_float, GL_NV_light_max_exponent, GL_NV_multisample_filter_hint,
GL_NV_occlusion_query, GL_NV_packed_depth_stencil, 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_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 16 0 16 16 16 16 0 0 None
0x2c 24 tc 0 32 0 r y . 8 8 8 8 4 16 0 16 16 16 16 0 0 None
0x2d 24 tc 0 32 0 r . . 8 8 8 0 4 16 0 16 16 16 16 0 0 None
0x2e 24 tc 0 32 0 r . . 8 8 8 8 4 16 0 16 16 16 16 0 0 None
0x2f 24 tc 0 32 0 r y . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x30 24 tc 0 32 0 r y . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x31 24 tc 0 32 0 r . . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x32 24 tc 0 32 0 r . . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x33 24 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x34 24 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x35 24 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x36 24 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x37 24 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x38 24 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x39 24 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x3a 24 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x3b 24 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x3c 24 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x3d 24 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x3e 24 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x3f 24 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x40 24 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x41 24 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x42 24 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x43 24 tc 0 32 0 r y . 8 8 8 0 4 16 0 16 16 16 16 2 1 Ncon
0x44 24 tc 0 32 0 r y . 8 8 8 8 4 16 0 16 16 16 16 2 1 Ncon
0x45 24 tc 0 32 0 r y . 8 8 8 0 4 16 0 16 16 16 16 4 1 Ncon
0x46 24 tc 0 32 0 r y . 8 8 8 8 4 16 0 16 16 16 16 4 1 Ncon
0x47 24 tc 0 32 0 r . . 8 8 8 0 4 16 0 16 16 16 16 2 1 Ncon
0x48 24 tc 0 32 0 r . . 8 8 8 8 4 16 0 16 16 16 16 2 1 Ncon
0x49 24 tc 0 32 0 r . . 8 8 8 0 4 16 0 16 16 16 16 4 1 Ncon
0x4a 24 tc 0 32 0 r . . 8 8 8 8 4 16 0 16 16 16 16 4 1 Ncon
0x4b 24 dc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x4c 24 dc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 0 0 None
0x4d 24 dc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x4e 24 dc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x4f 24 dc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x50 24 dc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x51 24 dc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x52 24 dc 0 32 0 r y . 8 8 8 0 4 16 0 16 16 16 16 0 0 None
0x53 24 dc 0 32 0 r y . 8 8 8 8 4 16 0 16 16 16 16 0 0 None
0x54 24 dc 0 32 0 r . . 8 8 8 0 4 16 0 16 16 16 16 0 0 None
0x55 24 dc 0 32 0 r . . 8 8 8 8 4 16 0 16 16 16 16 0 0 None
0x56 24 dc 0 32 0 r y . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x57 24 dc 0 32 0 r y . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x58 24 dc 0 32 0 r . . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x59 24 dc 0 32 0 r . . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x5a 24 dc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x5b 24 dc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x5c 24 dc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x5d 24 dc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x5e 24 dc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x5f 24 dc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x60 24 dc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x61 24 dc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x62 24 dc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x63 24 dc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x64 24 dc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x65 24 dc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x66 24 dc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x67 24 dc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x68 24 dc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x69 24 dc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x6a 24 dc 0 32 0 r y . 8 8 8 0 4 16 0 16 16 16 16 2 1 Ncon
0x6b 24 dc 0 32 0 r y . 8 8 8 8 4 16 0 16 16 16 16 2 1 Ncon
0x6c 24 dc 0 32 0 r y . 8 8 8 0 4 16 0 16 16 16 16 4 1 Ncon
0x6d 24 dc 0 32 0 r y . 8 8 8 8 4 16 0 16 16 16 16 4 1 Ncon
0x6e 24 dc 0 32 0 r . . 8 8 8 0 4 16 0 16 16 16 16 2 1 Ncon
0x6f 24 dc 0 32 0 r . . 8 8 8 8 4 16 0 16 16 16 16 2 1 Ncon
0x70 24 dc 0 32 0 r . . 8 8 8 0 4 16 0 16 16 16 16 4 1 Ncon
0x71 24 dc 0 32 0 r . . 8 8 8 8 4 16 0 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
0x72 32 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x73 32 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 0 0 None
0x74 32 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 0 0 None
0x75 32 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x76 32 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x77 32 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 0 0 None
0x78 32 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 0 0 None
0x79 32 tc 0 32 0 r y . 8 8 8 0 4 16 0 16 16 16 16 0 0 None
0x7a 32 tc 0 32 0 r y . 8 8 8 8 4 16 0 16 16 16 16 0 0 None
0x7b 32 tc 0 32 0 r . . 8 8 8 0 4 16 0 16 16 16 16 0 0 None
0x7c 32 tc 0 32 0 r . . 8 8 8 8 4 16 0 16 16 16 16 0 0 None
0x7d 32 tc 0 32 0 r y . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x7e 32 tc 0 32 0 r y . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x7f 32 tc 0 32 0 r . . 8 8 8 0 4 0 0 16 16 16 16 0 0 None
0x80 32 tc 0 32 0 r . . 8 8 8 8 4 0 0 16 16 16 16 0 0 None
0x81 32 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x82 32 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x83 32 tc 0 32 0 r y . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x84 32 tc 0 32 0 r y . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x85 32 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 2 1 Ncon
0x86 32 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 2 1 Ncon
0x87 32 tc 0 32 0 r . . 8 8 8 0 4 24 0 16 16 16 16 4 1 Ncon
0x88 32 tc 0 32 0 r . . 8 8 8 8 4 24 0 16 16 16 16 4 1 Ncon
0x89 32 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x8a 32 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x8b 32 tc 0 32 0 r y . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x8c 32 tc 0 32 0 r y . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x8d 32 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 2 1 Ncon
0x8e 32 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 2 1 Ncon
0x8f 32 tc 0 32 0 r . . 8 8 8 0 4 24 8 16 16 16 16 4 1 Ncon
0x90 32 tc 0 32 0 r . . 8 8 8 8 4 24 8 16 16 16 16 4 1 Ncon
0x91 32 tc 0 32 0 r y . 8 8 8 0 4 16 0 16 16 16 16 2 1 Ncon
0x92 32 tc 0 32 0 r y . 8 8 8 8 4 16 0 16 16 16 16 2 1 Ncon
0x93 32 tc 0 32 0 r y . 8 8 8 0 4 16 0 16 16 16 16 4 1 Ncon
0x94 32 tc 0 32 0 r y . 8 8 8 8 4 16 0 16 16 16 16 4 1 Ncon
0x95 32 tc 0 32 0 r . . 8 8 8 0 4 16 0 16 16 16 16 2 1 Ncon
0x96 32 tc 0 32 0 r . . 8 8 8 8 4 16 0 16 16 16 16 2 1 Ncon
0x97 32 tc 0 32 0 r . . 8 8 8 0 4 16 0 16 16 16 16 4 1 Ncon
0x98 32 tc 0 32 0 r . . 8 8 8 8 4 16 0 16 16 16 16 4 1 Ncon

hybrid · Post by **hybrid** » Mon Jul 13, 2009 8:46 am

Hmm, strange. I still cannot reproduce on my systems. I left it running for some minutes, and each time sydney was properly rendered. The only thing I can assume is that this is some kind of race condition where the system doesn't get the necessary structures from X or OpenGL and hence the context is not properly set up. Maybe one of you can debug through and see if the problem occurs under gdb as well, and maybe even which call returns erroneous data.

CuteAlien · Post by **CuteAlien** » Wed Jul 15, 2009 6:53 am

*sigh* note-to-self: Next time update drivers before wasting time with debugging.

Well, anyway - it was reproducable with old nvidea drivers (180.51), it is working perfectly now with new nvidea drivers (185.18.14). So I would guess we can close that bug.

hybrid · Post by **hybrid** » Wed Jul 15, 2009 8:43 am

Hmm, interesting. I guess we should try to post the driver version upon startup as well, might help debugging. And yes, we should probably close this bug then, as it was already assumed to be hw driver related.