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Old 14-01-2015, 05:46   #1
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Red blotches on ENC charts

I've screen printed an ENC chart and was wondering if someone could tell me what the red blotches are on the chart. It seems they only appear near lights.
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Old 14-01-2015, 06:28   #2
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Re: Red blotches on ENC charts

A sign that your OpenGL driver is not working properly.
Please post the relevant info from the logfile.

Pavel


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Old 14-01-2015, 06:49   #3
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Re: Red blotches on ENC charts

Not sure what is relevant. I tried uploading the files but they are too big.

If you can tell me what to search for or another way to upload the files, I'd be happy to get you the information.
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Old 14-01-2015, 07:00   #4
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Re: Red blotches on ENC charts

Wondering if maybe my graphics card in my Panasonic Toughbook CF-29 doesn't support some of the newer features of openGL?

I believe I have a Intel® 855GME.
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Old 14-01-2015, 07:09   #5
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Re: Red blotches on ENC charts

Quote:
Originally Posted by pkrawetzky View Post
Wondering if maybe my graphics card in my Panasonic Toughbook CF-29 doesn't support some of the newer features of openGL?

I believe I have a Intel® 855GME.
Intel drivers are famous for being broken badly on all platforms.

You are looking for something like
Code:
10:37:43 CST: OpenGL-> Renderer String: Mesa DRI Intel(R) Ironlake Mobile
10:37:43 CST: OpenGL-> Version reported:  2.1 Mesa 10.3.2
10:37:43 CST: OpenGL-> Detected Intel renderer, disabling stencil buffer
10:37:43 CST: OpenGL-> Texture rectangle format: de1
10:37:43 CST: OpenGL-> Using Vertexbuffer Objects
10:37:43 CST: OpenGL-> Using Framebuffer Objects
10:37:43 CST: OpenGL-> Using FBO Stencil buffer
10:37:43 CST: OpenGL-> Using Depth buffer clipping
10:37:43 CST: OpenGL-> Using s3tc dxt1 compression
10:37:43 CST: OpenGL-> Compressed tile size: 128kb (6:1)
10:37:43 CST: OpenGL-> Minimum cartographic line width:  1.0
10:37:43 CST: OpenGL-> Minimum symbol line width:  1.5
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Old 14-01-2015, 07:24   #6
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Re: Red blotches on ENC charts

I don't see any messages like that in opencpn.log. Is that the right file?
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Old 14-01-2015, 08:08   #7
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Re: Red blotches on ENC charts

Yes, ~/opencpn.log is the right file.
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Old 14-01-2015, 09:48   #8
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Re: Red blotches on ENC charts

Did a search, no entries at all like your examples.
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Old 14-01-2015, 16:20   #9
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Re: Red blotches on ENC charts

Your screenshot definitely looks like OpenGL was enabled when you've taken it...
Anyway, go to the Toolbox->Display->Advanced and try to switch OpenGL on to find out if the result is different/better/worse.

Pavel
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