Image-adjustment shader for vulkan (android)

RaduNastase · 11 February 2022 18:49

Hey friends,

The image adjustment shader in GL renderer is amazing. I can fix my slight greenish tint of the phone’s screen so fast and smooth. Sadly, there’s nothing similar for Vulkan (or is it?). Can this shader or something similar, be made for Vulkan as well?

Thanks so much!

hunterk · 11 February 2022 20:46

There is a slang version.

RaduNastase · 11 February 2022 21:18

There is? I didn’t find it in my Retroarch’s shaders…I will look for ot in the repository.

Thanks!!

hunterk · 11 February 2022 21:33

There’s actually 2 flavors. This one, which is like the GLSL version:

github.com

libretro/slang-shaders/blob/master/misc/image-adjustment.slang

#version 450

layout(push_constant) uniform Push
{
	vec4 SourceSize;
	uint FrameCount;
	float ia_target_gamma;
	float ia_monitor_gamma;
	float ia_overscan_percent_x;
	float ia_overscan_percent_y;
	float ia_saturation;
	float ia_contrast;
	float ia_luminance;
	float ia_black_level;
	float ia_bright_boost;
	float ia_R;
	float ia_G;
	float ia_B;
	float ia_ZOOM;
	float ia_XPOS;

This file has been truncated. show original

and this one, which is more easily customized for people that don’t want all of the settings:

github.com

libretro/slang-shaders/blob/master/misc/img_mod.slangp

shaders = 1

shader0 = img_mod.slang

textures = "SamplerLUT1;SamplerLUT2"
SamplerLUT1 = ../reshade/shaders/LUT/16.png
SamplerLUT2 = ../reshade/shaders/LUT/16.png

RaduNastase · 13 February 2022 08:44

The img mod doesn’t work for me, when i activate it is says it can not be applied, but it turns out the image adjustment one was there all along, but compared to GL mode, i couldn’t place it first, only add it as an extra layer, after another shader was loaded (ex. ScaleFx). It works as intended this way!

RaduNastase · 19 February 2022 12:15

Hey hunter, a quick question for you: is there a “dilation” shader, or something similar for GL? I only found it in Vulkan - warp shaders, which seem to be completely missing in GL.