It could be that the video memory is full.. Could you try reducing the
planet and normal maps texture sizes?
Fabien
On Sat, Feb 14, 2015 at 5:40 PM, Michal Sojka <sojk...@fel.cvut.cz> wrote:
> On Sat, Feb 14 2015, Alexander Wolf wrote:
> > Hi!
> >
> > 2015-02-14 7:34 GMT+06:00 Michal Sojka <sojk...@fel.cvut.cz>:
> >
> >> I experience crashes on Windows XP system with Nvidia GeForce GT 610 GPU
> >> when Moon appears or when another planet is zoomed enough. I found that
> >> there was a discussion about this in November. Has anybody have a
> >> solution?
> >>
> >
> > Are you have crash dumps? Or, maybe you can trace crashes?
>
> Yes, but the crash dump is not very useful:
>
> stellarium.exe caused an Access Violation at location 03B1F5C7 Reading
> from location 07130000.
> Registers:
> eax=4dd7e000 ebx=03a70000 ecx=00000187 edx=03e658cc esi=07130000
> edi=3e2b9457
> eip=03b1f5c7 esp=03a1e778 ebp=45eb2e5a iopl=0 nv up ei pl nz na
> pe nc
> cs=001b ss=0023 ds=0023 es=0023 fs=003b gs=0000
> efl=00000202
> AddrPC Params
> 03B1F5C7 03A70000 4DD7D460 03E65810
> 02385CE4 02282E40 02283BA0 022726D0 nvoglnt.dll!DllMain
> 0227F5A0 02283BA0 022726D0 02272720 nvoglnt.dll!DrvSwapBuffers
> 02282E40 022726D0 02272720 022863D0 nvoglnt.dll!DrvSwapBuffers
> 02283BA0 02272720 022863D0 02286410 nvoglnt.dll!DrvSwapBuffers
> 022726D0 022863D0 02286410 00000000 nvoglnt.dll!0x8126d0
> 02272720 02286410 00000000 030D0240 nvoglnt.dll!0x812720
> 022863D0 00000000 030D0240 022A3010 nvoglnt.dll!DrvSwapBuffers
> 02286410 030D0240 022A3010 01B1D000 nvoglnt.dll!DrvSwapBuffers
> >
> >
> >> I've found that it segfaults in nvoglnt.dll. If I comment out calls to
> >> Planet::drawSphere() there are no crashes but I don't have planets. I
> >> tried to comment out various pieces of code in Planet::drawSphere() but
> >> I haven't found the reason for crashes.
> >>
> >> Any hint where to look or what to change would be appreciated.
> >>
> >
> > It can be caused textures or shaders.
>
> Right. In the mean time I found a minimal change that removes the
> crashes (see below). I don't have the textures, but I don't need them
> for my use case. It is interesting that Stellarium does not crash during
> Moon eclipse, because I haven't removed the shadow texture from the
> shader.
>
> Thanks for help.
>
> -Michal
>
> diff --git a/src/core/modules/Planet.cpp b/src/core/modules/Planet.cpp
> index 98b3382..97712bf 100644
> --- a/src/core/modules/Planet.cpp
> +++ b/src/core/modules/Planet.cpp
> @@ -1227,7 +1227,7 @@ void Planet::initShader()
> " }\n"
> "\n"
> "#ifdef IS_MOON\n"
> - " mediump vec3 normal = texture2D(normalMap,
> texc).rgb-vec3(0.5, 0.5, 0);\n"
> + " mediump vec3 normal = vec3(0, 0, 1);\n"
> " normal =
> normalize(normalX*normal.x+normalY*normal.y+normalZ*normal.z);\n"
> " // normal now contains the real surface normal
> taking normal map into account\n"
> " // Use an Oren-Nayar model for rough surfaces\n"
> @@ -1253,12 +1253,12 @@ void Planet::initShader()
> " if(final_illumination < 0.99)\n"
> " {\n"
> " lowp vec4 shadowColor = texture2D(earthShadow,
> vec2(final_illumination, 0.5));\n"
> - " gl_FragColor = mix(texture2D(tex, texc) *
> litColor, shadowColor, shadowColor.a);\n"
> + " gl_FragColor = mix(litColor, shadowColor,
> shadowColor.a);\n"
> " }\n"
> " else\n"
> "#endif\n"
> " {\n"
> - " gl_FragColor = texture2D(tex, texc) *
> litColor;\n"
> + " gl_FragColor = litColor;\n"
> " }\n"
> "}\n";
>
>
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