Hi Christoph and all,
Did you have any news on this? Is the simple pass-through geometry
shader supposed to work using your branch?
/2014-08-20/ Christoph Kolb
<http://mitk.org/git/?p=MITK.git;a=search;h=refs/heads/bug-18026-AddGeometryShaderSupport;s=Christoph+Kolb;st=author>
Geometry shader support in mitkVtkShaderRepository
<http://mitk.org/git/?p=MITK.git;a=commit;h=75ca21bd3684267d65544f94441b7e843787bee3>bug-18026-AddGeometryShaderSupport
<http://mitk.org/git/?p=MITK.git;a=shortlog;h=refs/heads/bug-18026-AddGeometryShaderSupport>
http://mitk.org/git/?p=MITK.git;a=commit;h=75ca21bd3684267d65544f94441b7e843787bee3
Le 2014-08-21 09:49, Nil Goyette a écrit :
This being said, I never succeeded in running a geometry shader. The
program starts without error, so the shaders are built and added in
the repository, but when I add a FiberBundleX in the data manager, I
always get the same Visual Studio error
"Unhandled exception at 0x6916B759 (atioglxx.dll) in MI-Brain.exe:
0xC0000005: Access violation reading location 0x00000010."
File vtkOpenGLDisplayListPainter.cxx
Line 181 glCallList(iter->second);
I tried with 3 versions to be sure, but none of them works. I'm pretty
sure 2) should work.
1) The shader I actually want to use, which keeps vertices only in a
specific zone
2) Simple pass-through
#version 120
#extension GL_EXT_geometry_shader4 : enable
void main(void) {
for (int i = 0; i < gl_VerticesIn; ++i) {
gl_Position = gl_PositionIn[i];
EmitVertex();
}
}
3) Empty main() (not sure it's valid though)
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