Found shader settings to emulate 14" VGA CRT nearly perfectly

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mbrown3345
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Found shader settings to emulate 14" VGA CRT nearly perfectly

Post by mbrown3345 »

Hi guys,

After much trial and error I was able to configure PCem 13.1 shaders to nearly perfectly emulate the shadow mask CRT raster of an old IBM 8515 VGA. See the attached screenshot for real vs emulated comparison (captured on a 4K UHD monitor). I am using CRT-Lottes.glsl shader from retroarch with the parameters specified in the attached PCem configuration file (using Model 30-286 in my example), if anyone is interested.

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TheMechanist
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Re: Found shader settings to emulate 14" VGA CRT nearly perfectly

Post by TheMechanist »

Yeah, thanks, looks promising! Although I do not know what the image of the monitor looks like in the original, the shader provides an image that looks quite authentic!

PCem without shaders (click to enlarge)

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PCem with this shader activated ...

Image Image Image

I guess I'll capture my prods for old 286 rigs next time with that shader for the retro feeling ..
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TheMechanist
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Re: Found shader settings to emulate 14" VGA CRT nearly perfectly

Post by TheMechanist »

get the shader from here https://github.com/libretro/glsl-shader ... rt/shaders and set config in shaders menu ..
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