Set shader settings automatically SNES

[matpie]

Hi guys,

I just figured out how to automatically load a shader at snes startup. I use snes9x. My retroarch.cfg for snes looks like this

video_shader = /opt/retropie/emulators/retroarch/shader/sabr/sabr-v3.0.glsl
video_shader_enable = true

But how can I set the “shader scale” to “1” and the “shader filter” to “nearest”. When I press F1 in retroarch menu I can set these two values. But I don’t know how to set it in the cfg. Do you know how to configure it?

[patrickm]

[quote=97726]Hi guys,

I just figured out how to automatically load a shader at snes startup. I use snes9x. My retroarch.cfg for snes looks like this

video_shader = /opt/retropie/emulators/retroarch/shader/sabr/sabr-v3.0.glsl
video_shader_enable = true

But how can I set the “shader scale” to “1” and the “shader filter” to “nearest”. When I press F1 in retroarch menu I can set these two values. But I don’t know how to set it in the cfg. Do you know how to configure it?

[/quote]

I wouldn’t recommend shaders on the pi as they tend to cause performance issues. I would instead opt for overlays – see “how to get scanlines.”

If you insist, though:

Main menu -> options -> video options -> shader
There you will find “shader scale” and “shader filter.”

[matpie]

Thanks for your answer. I know how to set it manually in the options. But I want to set these two values in the retroarch.cfg so there is nothing to do after starting snes9x. I don’t want to set it manually every time.

[Floob]

The default SNES emulator in RetroPie 3 beta 2 is lr-snes9x-next.

Here are some examples for the retroarch.cfg that are generated (assuming 1 shader pass)

Filter = Nearest
Scale = Dont Care

filter_linear0 = "false"
wrap_mode0 = "clamp_to_border"
mipmap_input0 = "false"
alias0 = ""
float_framebuffer0 = "false"
srgb_framebuffer0 = "false"

Filter = Linear
Scale = 2x

filter_linear0 = "true"
wrap_mode0 = "clamp_to_border"
mipmap_input0 = "false"
alias0 = ""
float_framebuffer0 = "false"
srgb_framebuffer0 = "false"
scale_type_x0 = "source"
scale_x0 = "2.000000"
scale_type_y0 = "source"
scale_y0 = "2.000000"

Filter = Dont Care
Scale = 3x

wrap_mode0 = "clamp_to_border"
mipmap_input0 = "false"
alias0 = ""
float_framebuffer0 = "false"
srgb_framebuffer0 = "false"
scale_type_x0 = "source"
scale_x0 = "3.000000"
scale_type_y0 = "source"
scale_y0 = "3.000000"

[Floob]

Although I think these need to be called in, so you call your shader “snescustom.glslp” (put it wherever – probably in shader dir is best) or similar, then its contents would be

shaders = "1"
shader0 = "/opt/retropie/emulators/retroarch/shader/scanline.glsl"
filter_linear0 = "false"
wrap_mode0 = "clamp_to_border"
mipmap_input0 = "false"
alias0 = ""
float_framebuffer0 = "false"
srgb_framebuffer0 = "false"
scale_type_x0 = "source"
scale_x0 = "1.000000"
scale_type_y0 = "source"
scale_y0 = "1.000000"

Some shader settings info here:
https://github.com/libretro/RetroArch/wiki/RGUI

[matpie]

Hi Floob,

thank you, the second method with the custom shader worked for me :).

BTW: Your videos are great and also helped me to solve other problems. Thanks a lot :) !

Have a nice evening!

[Author]

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