Set shader settings automatically SNES

This topic has 5 replies, 3 voices, and was last updated 9 years, 6 months ago by matpie.

Viewing 6 posts - 1 through 6 (of 6 total)

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05/16/2015 at 13:04 #97726
matpie
Participant
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?
05/16/2015 at 16:59 #97728
patrickm
Participant
[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.”
05/16/2015 at 18:12 #97733

matpie
Participant

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.

05/16/2015 at 19:52 #97734
Floob
Member
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"
```
05/16/2015 at 19:58 #97735
Floob
Member
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
05/16/2015 at 21:13 #97741

matpie
Participant

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!
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