Faint somas from rtneuronApp on Ubuntu 18.04.1

[alex4200]

Issue on Ubuntu 18.04.1:

When loading the circuit with just the soma I see the following image, with the soma (or whatever) very faint at the center of the image. When I zoom in, it gets even fainter:

[hernando]

That's typically due to compilation errors in the GLSL shaders. Is there anything printed in the console? Do you happen to have an AMD or Intel graphics card?

[alex4200]

It seems to be an INTEL graphics card, and I see this following additional output (after start_app()):

 GEOMETRY glCompileShader "geom/sphere.geom" FAILED                                                                                         
FRAGMENT glCompileShader "shading/phong_sphere.frag" FAILED
FRAGMENT Shader "shading/phong_sphere.frag" infolog:
0:24(12): warning: extension `GL_EXT_geometry_shader4' unsupported in fragment shader
0:25(12): warning: extension `GL_EXT_gpu_shader4' unsupported in fragment shader
0:30(1): error: syntax error, unexpected NEW_IDENTIFIER

glLinkProgram 0x7f7a28239750"geom/sphere.vert, geom/sphere.geom, geom/default_color.vert, shading/phong_sphere.frag, shading/phong.frag, main.vert, main.frag, " FAILED
Program "geom/sphere.vert, geom/sphere.geom, geom/default_color.vert, shading/phong_sphere.frag, shading/phong.frag, main.vert, main.frag, " infolog:
error: linking with uncompiled/unspecialized shader
Warning: detected OpenGL error 'invalid enumerant' at After Renderer::compile
file:///tmp/.mount_rtneuroL2AZJ/usr/local/lib/python3.7/site-packages/PyQt5/Qt/qml/QtQuick/Dialogs/DefaultFileDialog.qml:210:25: QML ListView: Binding loop detected for property "model"
Gtk-Message: 10:53:23.160: GtkDialog mapped without a transient parent. This is discouraged.
 16689 More than one subnetwork found, ignoring extra ones.
 16691 Removing mesh-based models from level-of-detail list
failed
In [3]: GEOMETRY glCompileShader "geom/sphere.geom" FAILED                                                                                         
VERTEX glCompileShader "geom/reported_variable_at_soma.vert" FAILED
VERTEX Shader "geom/reported_variable_at_soma.vert" infolog:
0:24(12): warning: extension `GL_EXT_gpu_shader4' unsupported in vertex shader
0:29(23): error: syntax error, unexpected NEW_IDENTIFIER, expecting '{'

FRAGMENT glCompileShader "shading/phong_sphere.frag" FAILED
FRAGMENT Shader "shading/phong_sphere.frag" infolog:
0:24(12): warning: extension `GL_EXT_geometry_shader4' unsupported in fragment shader
0:25(12): warning: extension `GL_EXT_gpu_shader4' unsupported in fragment shader
0:30(1): error: syntax error, unexpected NEW_IDENTIFIER

glLinkProgram 0x7f7a2826b510"geom/sphere.vert, geom/sphere.geom, geom/reported_variable_at_soma.vert, geom/simulation_value_to_soma_color.vert, geom/soma_color.vert, shading/phong_sphere.frag, shading/phong.frag, main.vert, main.frag, " FAILED
Program "geom/sphere.vert, geom/sphere.geom, geom/reported_variable_at_soma.vert, geom/simulation_value_to_soma_color.vert, geom/soma_color.vert, shading/phong_sphere.frag, shading/phong.frag, main.vert, main.frag, " infolog:
error: linking with uncompiled/unspecialized shadererror: linking with uncompiled/unspecialized shader
Warning: detected OpenGL error 'invalid enumerant' at after RenderBin::draw(..)```

[hernando]

I have a laptop with an Intel graphics card where I've seen this errors before. I have to check if I can downgrade the requirements, but I can't think of any other simple solution. Can you run glxinfo on a console and tell me the list of GL extensions supported in your graphics card?

[alex4200]

I will need to test the latest suggestion on my laptop. I plan to do this on 16 Jan 2019.