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Few celestial objects are bad rendered

https://forums.vega-strike.org/viewtopic.php?f=2&t=16193

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Few celestial objects are bad rendered

Posted: Sun Apr 10, 2011 2:28 pm
by echoes91
I see a graphical issue with the objects "Medium gas giant" planet and red stars, as you can see in the images below. As far as i remember, I haven't noticed any other graphical problem. I use fglrx 2:8.780-0ubuntu2 on Ubuntu Linux 64 bit, haven't got the hardware and software to test with other configurations

Re: Few celestial objects are bad rendered

Posted: Sun Apr 10, 2011 10:08 pm
by klauss
What version of VS are you playing?

Re: Few celestial objects are bad rendered

Posted: Mon Apr 11, 2011 4:19 pm
by echoes91
I'm really sorry, it's SVN at lastest revision. I cannot say at which revision the problem appeared...

Re: Few celestial objects are bad rendered

Posted: Fri Apr 15, 2011 10:21 pm
by strook
didn't you remove my "seamless flight" bug? :lol:

Re: Few celestial objects are bad rendered

Posted: Sat Apr 16, 2011 1:18 am
by TBeholder
Same here (SVN, Linux).
A sun visible through a planet. Also, a similar bug with rings.

Re: Few celestial objects are bad rendered

Posted: Mon Apr 18, 2011 1:33 pm
by echoes91
Yes, i've seen those too and I think they're correlated, even if my knowledges are very limited...

Re: Few celestial objects are bad rendered

Posted: Mon Apr 18, 2011 2:41 pm
by strook
Look here

Re: Few celestial objects are bad rendered

Posted: Mon Apr 18, 2011 11:14 pm
by klauss
It looks like z-buffer resolution issues, which I haven't had for loooong while.

Are you perchance playing in 16-bit color?
What's the exact config?
What does glxinfo say?

Perhaps you've got w-buffers enabled by default. Or even worse, forced by driver settings. That would be bad - for a lot of things, w-buffers are better than z-buffers, but not for VS.

BTW: that last link is a totally different bug. I think it was resolved, wasn't it?

Re: Few celestial objects are bad rendered

Posted: Tue Apr 19, 2011 9:04 pm
by strook
i took a look on the newest vs code. it is fixed. those planets and suns like in the initial thread posting shouldn't be there. maybe a opengl bug.

Re: Few celestial objects are bad rendered

Posted: Tue Apr 19, 2011 9:07 pm
by echoes91
I play with 32bit color at 1024x768, max texture, detail and shader. I've seen today that there's a "workaround for ATI bug" by switching off the accelerated visual. I'll try to discover if that's the solution

Re: Few celestial objects are bad rendered

Posted: Fri Apr 22, 2011 6:11 pm
by TBeholder
Currently this bug seems to be gone.

Re: Few celestial objects are bad rendered

Posted: Sat Apr 23, 2011 5:01 pm
by klauss
@echoes91: please post the output of glxinfo and stdout/stderr from VS, to diagnose z-buffer issues those file will contain relevant details.

@Turbo: did it disappear by art of magic? or by art of svn up? can we pinpoint the revision where it was fixed? I'd like to know exactly what it was

Re: Few celestial objects are bad rendered

Posted: Sat Apr 23, 2011 7:30 pm
by TBeholder
klauss wrote:did it disappear by art of magic? or by art of svn up? can we pinpoint the revision where it was fixed? I'd like to know exactly what it was
No idea, but i noticed just before rev. 13190. Updated neither every day nor too long ago, so my guess it's either 13172 or 13168.

Re: Few celestial objects are bad rendered

Posted: Mon Apr 25, 2011 2:05 pm
by klauss
13172 cannot be, it only applies to planet shaders (stars should be unaffected).

13168 might, if zwrite and cwrite passes don't agree on precision. Hm... will have to make sure they do. But again, this is only for planets, and we're seeing stars exhibit this issue too...

Still... I'll make sure about zwrite/cwrite stuff..

Re: Few celestial objects are bad rendered

Posted: Thu Apr 28, 2011 11:49 am
by echoes91
The problem persists with AcceleratedVisual turned off.
This is the output of glxinfo, but i don't know what stdout/stderr mean :cry: :

Code: Select all

name of display: :0.0
display: :0  screen: 0
direct rendering: Yes
server glx vendor string: ATI
server glx version string: 1.4
server glx extensions:
    GLX_ARB_multisample, GLX_EXT_import_context, GLX_EXT_texture_from_pixmap, 
    GLX_EXT_visual_info, GLX_EXT_visual_rating, GLX_OML_swap_method, 
    GLX_SGI_make_current_read, GLX_SGI_swap_control, GLX_SGIS_multisample, 
    GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_visual_select_group
client glx vendor string: ATI
client glx version string: 1.4
client 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_MESA_allocate_memory, 
    GLX_MESA_swap_control, GLX_MESA_swap_frame_usage, GLX_NV_swap_group, 
    GLX_OML_swap_method, GLX_SGI_make_current_read, GLX_SGI_swap_control, 
    GLX_SGI_video_sync, GLX_SGIS_multisample, GLX_SGIX_fbconfig, 
    GLX_SGIX_pbuffer, GLX_SGIX_swap_barrier, GLX_SGIX_swap_group, 
    GLX_SGIX_visual_select_group, GLX_EXT_texture_from_pixmap, 
    GLX_EXT_framebuffer_sRGB, GLX_ARB_fbconfig_float, GLX_AMD_gpu_association
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_MESA_swap_control, 
    GLX_NV_swap_group, GLX_OML_swap_method, GLX_SGI_make_current_read, 
    GLX_SGI_swap_control, GLX_SGI_video_sync, GLX_SGIS_multisample, 
    GLX_SGIX_fbconfig, GLX_SGIX_pbuffer, GLX_SGIX_swap_barrier, 
    GLX_SGIX_swap_group, GLX_SGIX_visual_select_group, 
    GLX_EXT_texture_from_pixmap
OpenGL vendor string: ATI Technologies Inc.
OpenGL renderer string: ATI Mobility Radeon HD 4500 Series
OpenGL version string: 3.3.10237 Compatibility Profile Context
OpenGL shading language version string: 3.30
OpenGL extensions:
    GL_AMDX_debug_output, GL_AMDX_vertex_shader_tessellator, 
    GL_AMD_conservative_depth, GL_AMD_debug_output, GL_AMD_draw_buffers_blend, 
    GL_AMD_name_gen_delete, GL_AMD_performance_monitor, 
    GL_AMD_sample_positions, GL_AMD_seamless_cubemap_per_texture, 
    GL_AMD_shader_stencil_export, GL_AMD_texture_cube_map_array, 
    GL_AMD_texture_texture4, GL_AMD_vertex_shader_tessellator, 
    GL_ARB_blend_func_extended, GL_ARB_color_buffer_float, GL_ARB_copy_buffer, 
    GL_ARB_depth_buffer_float, GL_ARB_depth_clamp, GL_ARB_depth_texture, 
    GL_ARB_draw_buffers, GL_ARB_draw_buffers_blend, 
    GL_ARB_draw_elements_base_vertex, GL_ARB_draw_instanced, 
    GL_ARB_explicit_attrib_location, GL_ARB_fragment_coord_conventions, 
    GL_ARB_fragment_program, GL_ARB_fragment_program_shadow, 
    GL_ARB_fragment_shader, GL_ARB_framebuffer_object, 
    GL_ARB_framebuffer_sRGB, GL_ARB_geometry_shader4, GL_ARB_half_float_pixel, 
    GL_ARB_half_float_vertex, GL_ARB_imaging, GL_ARB_instanced_arrays, 
    GL_ARB_map_buffer_range, GL_ARB_multisample, GL_ARB_multitexture, 
    GL_ARB_occlusion_query, GL_ARB_occlusion_query2, 
    GL_ARB_pixel_buffer_object, GL_ARB_point_parameters, GL_ARB_point_sprite, 
    GL_ARB_provoking_vertex, GL_ARB_sample_shading, GL_ARB_sampler_objects, 
    GL_ARB_seamless_cube_map, GL_ARB_shader_bit_encoding, 
    GL_ARB_shader_objects, GL_ARB_shader_texture_lod, 
    GL_ARB_shading_language_100, GL_ARB_shadow, GL_ARB_shadow_ambient, 
    GL_ARB_sync, GL_ARB_texture_border_clamp, GL_ARB_texture_buffer_object, 
    GL_ARB_texture_compression, GL_ARB_texture_compression_rgtc, 
    GL_ARB_texture_cube_map, GL_ARB_texture_cube_map_array, 
    GL_ARB_texture_env_add, GL_ARB_texture_env_combine, 
    GL_ARB_texture_env_crossbar, GL_ARB_texture_env_dot3, 
    GL_ARB_texture_float, GL_ARB_texture_gather, 
    GL_ARB_texture_mirrored_repeat, GL_ARB_texture_multisample, 
    GL_ARB_texture_non_power_of_two, GL_ARB_texture_query_lod, 
    GL_ARB_texture_rectangle, GL_ARB_texture_rg, GL_ARB_texture_rgb10_a2ui, 
    GL_ARB_texture_snorm, GL_ARB_timer_query, GL_ARB_transform_feedback2, 
    GL_ARB_transform_feedback3, GL_ARB_transpose_matrix, 
    GL_ARB_uniform_buffer_object, 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_vertex_type_2_10_10_10_rev, GL_ARB_window_pos, GL_ATI_draw_buffers, 
    GL_ATI_envmap_bumpmap, GL_ATI_fragment_shader, GL_ATI_meminfo, 
    GL_ATI_separate_stencil, GL_ATI_texture_compression_3dc, 
    GL_ATI_texture_env_combine3, GL_ATI_texture_float, 
    GL_ATI_texture_mirror_once, GL_EXT_abgr, GL_EXT_bgra, 
    GL_EXT_bindable_uniform, 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_copy_buffer, GL_EXT_copy_texture, GL_EXT_direct_state_access, 
    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_EXT_framebuffer_sRGB, 
    GL_EXT_geometry_shader4, GL_EXT_gpu_program_parameters, 
    GL_EXT_gpu_shader4, GL_EXT_histogram, 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_provoking_vertex, GL_EXT_rescale_normal, GL_EXT_secondary_color, 
    GL_EXT_separate_specular_color, GL_EXT_shadow_funcs, GL_EXT_stencil_wrap, 
    GL_EXT_subtexture, GL_EXT_texgen_reflection, GL_EXT_texture3D, 
    GL_EXT_texture_array, GL_EXT_texture_buffer_object, 
    GL_EXT_texture_buffer_object_rgb32, 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_add, 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_rectangle, GL_EXT_texture_sRGB, 
    GL_EXT_texture_shared_exponent, GL_EXT_texture_snorm, 
    GL_EXT_texture_swizzle, GL_EXT_timer_query, GL_EXT_transform_feedback, 
    GL_EXT_vertex_array, GL_EXT_vertex_array_bgra, 
    GL_IBM_texture_mirrored_repeat, GL_KTX_buffer_region, GL_NV_blend_square, 
    GL_NV_conditional_render, GL_NV_copy_depth_to_color, 
    GL_NV_explicit_multisample, GL_NV_float_buffer, GL_NV_half_float, 
    GL_NV_primitive_restart, GL_NV_texgen_reflection, GL_SGIS_generate_mipmap, 
    GL_SGIS_texture_edge_clamp, GL_SGIS_texture_lod, GL_SUN_multi_draw_arrays, 
    GL_WIN_swap_hint, WGL_EXT_swap_control

65 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
----------------------------------------------------------------------------
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0x0a4 32 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0  0  0  0  0  4 1 Ncon

75 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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0x03c 24 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x03d 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x03e 24 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x043 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x044 24 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x045 24 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x046 24 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x04b 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x04c 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x04d 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x04e 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x04f 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x050 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 None
0x051 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0  0  0  0  0  0 0 None
0x052 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0  0  0  0  0  0 0 None
0x053 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x054 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x055 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x056 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x057 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  2 1 None
0x058 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  2 1 None
0x059 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0  0  0  0  0  2 1 None
0x05a 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0  0  0  0  0  2 1 None
0x05b 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x05c 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x05d 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x05e 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x05f 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  4 1 None
0x060 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  4 1 None
0x061 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0  0  0  0  0  4 1 None
0x062 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0  0  0  0  0  4 1 None
0x063 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x064 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x065 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x066 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x06b 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x06c 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8 16 16 16 16  0 0 None
0x06d 24 dc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x06e 24 dc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0 16 16 16 16  0 0 None
0x0a4 32 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  0  0  0  0  0  4 1 Ncon
0x0a4 32 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  0  0  0  0  0  0 0 Ncon
0x0a4 32 tc  0  32  0 r  y .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 Ncon
0x0a4 32 tc  0  32  0 r  . .   8  8  8  8 .  .  0 24  8  0  0  0  0  0 0 Ncon
0x0a4 32 tc  0  32  0 r  . .   8  8  8  8 .  .  0  0  0  0  0  0  0  0 0 Ncon
0x0a4  0 tc  0 128  0    y .  32 32 32 32 .  .  0 24  0  0  0  0  0  0 0 None
0x0a4  0 tc  0 128  0    . .  32 32 32 32 .  .  0 24  0  0  0  0  0  0 0 None
0x0a4  0 tc  0  64  0    y .  16 16 16 16 .  .  0 24  0  0  0  0  0  0 0 None
0x0a4  0 tc  0  64  0    . .  16 16 16 16 .  .  0 24  0  0  0  0  0  0 0 None
0x0a4  0 tc  0  32  0    y .  11 11 10  0 .  .  0 24  0  0  0  0  0  0 0 None
0x0a4  0 tc  0  32  0    . .  11 11 10  0 .  .  0 24  0  0  0  0  0  0 0 None

Re: Few celestial objects are bad rendered

Posted: Thu Apr 28, 2011 2:34 pm
by TBeholder
echoes91 wrote:The problem persists with AcceleratedVisual turned off.

Code: Select all

 OpenGL version string: 3.3.10237 Compatibility Profile Context
Pretty much the same except

Code: Select all

OpenGL version string: 3.3.10362 Compatibility Profile Context
GL_AMD_conservative_depth, GL_AMD_debug_output, 
GL_AMD_depth_clamp_separate, GL_AMD_draw_buffers_blend, 
...
    GL_NV_primitive_restart, GL_NV_texgen_reflection, GL_NV_texture_barrier,
echoes91 wrote:This is the output of glxinfo, but i don't know what stdout/stderr mean :cry: :
run it with something like

Code: Select all

vegastrike/vegastrike 2>vegastrike_err.txt 1>vegastrike_out.txt

Re: Few celestial objects are bad rendered

Posted: Sat Apr 30, 2011 12:02 am
by klauss
According to glxinfo, you don't have any visuals with 16-bit z-buffers, so at least one theory is discarded.

Re: Few celestial objects are bad rendered

Posted: Thu May 19, 2011 2:04 pm
by echoes91
With updated fglrx drivers (downloaded from AMD website, not the ones provided by Ubuntu) things look much better. The problem seems to be resolved but i had not much time to test...

Re: Few celestial objects are bad rendered

Posted: Thu May 19, 2011 2:22 pm
by loki1950
That goes with the usual experience when ever VS misbehaves check your video drivers :wink: We have exposed bugs in several drivers over the years :)

Enjoy the Choice :)

Re: Few celestial objects are bad rendered

Posted: Fri Jun 03, 2011 11:56 am
by TBeholder
Ah, here's in the current:
the ring's far side is visible through gas giant; fishnet planet.

Edit: The last SVN, Ubuntu, fglrx 2.8.801 (last tested).

Re: Few celestial objects are bad rendered

Posted: Fri Jun 03, 2011 1:41 pm
by loki1950
That looks like a texture problem pyramid must have look and what are they :?: So he can track down the mesh and various textures and maybe the shader responsible for those renders.

Enjoy the Choice :)

Re: Few celestial objects are bad rendered

Posted: Mon Jun 13, 2011 2:04 pm
by klauss
No, that's z-buffering artifacts in all their glory.

This shouldn't be happening though. Planets are rendered with a kind of projections that was designed to avoid that precisely. I wonder if somehow the clipping planes are miscalibrated or something like that...
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