Shader crt-pi.glsl Raspberry Pi4 Recalbox 7

[mkoff]

Hi. I managed to run overlays and shader crt-pi.glsl into recalbox 7 on raspberry pi 3b+. But the same conditions do not allow the shader to work on Raspberry Pi 4. Will a new working shader for Raspberry Pi 4 be written, deforming the picture with the stylistics like the old picture tube? Or can the old one also work with the new gpu under certain conditions?

[mkoff]

7.0.1 - The problem is still there!

[Zemus]

Still the same with 7.1.1

The zfast crt shaders arent bad, but i like the old crt-pi shaders much more.

[acris]

hello
please go to /share_int/
Download shaders.tar.xz
unzip archive
move all files in /share/shaders
you need to erase files inside.

and try again.

[Zemus]

@acris

Ive done everything like you said, but no difference.

Ive flashed a new 7.1.1 image to a second sdcard, but it is just the same

crt-pi
crt-pi-barrel
crt-pi-mask

...still broke

[Pitch64]

Do you have the file /share/shaders/lr/crt-pi/crt-pi.glsl? If not, you need to do again what @acris said above.

[Zemus]

@Pitch64

Everything where it belongs

[Pitch64]

@Zemus it should work in that case. If it still doesn't work, maybe try to restart?

[Zemus]

@Pitch64

It simply doesnt.

Like i said. If its a fresh install or my upgraded system...it doesnt work

[Zemus]

@Pitch64

edit: now im just desperate and did acris advice even on the fesh install:

[Zemus]

OK...

with this shader as source, i was able to fix the crt-pi shader for RPI4

https://github.com/libretro/glsl-shaders/blob/master/crt/shaders/crt-pi.glsl

I tweaked some values , so that the shader looks as close as the one on RPI3 (reduce moire effect, deactivate mask for real colour)

I didnt found a source for the barrel and mask shader (maybe special recalbox shaders?), so this was the only one i could fix for now.

Just copy the crt-pi.glsl file to /recalbox/share/shaders/lr/crt-pi
https://www.dropbox.com/s/elt6fxqmieh7pzh/crt-pi.glsl?dl=0

Hope i could help

[BRDX]

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