ceejaydk / sweetfx Goto Github PK

Hi CeeJay, awesome work on your shaders!

I am unable to understand the math of the Technicolor 2 shader:

https://github.com/CeeJayDK/SweetFX/blob/master/Shaders/Technicolor2.fx

Is that math dynamic based on the image? Or is it safe/possible to convert that whole effect to a static LUT (with zero visual differences)?

How to Switch to SRGB again? instead of linear. or you can just add checkbox like LordOfLunacy sharpcontrast.

LiftGammaGain.fx line 39 applies gamma input using formula: color = pow(abs(color), 1.0 / RGB_Gamma);

However, Tonemap.fx line 43 uses the formula color = pow(color, Gamma);

Is one of these implementations wrong?

Can I use use SweetFX on its own, without installing ReShade? The reason I'm asking is that ReShade cannot be used along with DXVK, but SweetFX itself can be chained with other libraries, and I want to use it with DXVK to get some performance boost in some badly optimized dx11-games.

I wanted to use 2 or 3 different layer.png images for an FPS game that does not show gun on screen. I wanted for example a rifle,pistol and grenade.
I can make 3 .pngs one for each weapon but is there a way I could swap them in game without alt/tabbing and manually swapping the layer.png every time I swap weapons in my single player game.

Hi I use this shader to desaturate dark colors in mpv. I want to make something similar but with vibrance instead of saturation. Can you help me out with that?
Thank you :)

//!PARAM Strength
//!DESC Desat Strength
//!TYPE float
//!MINIMUM 0
//!MAXIMUM 1
1

//!HOOK MAIN
//!BIND HOOKED
//!DESC Desaturation smooth


#define Thresh 35/255.
#define w 10/255.
#define CoefLuma vec4(0.2126, 0.7152, 0.0722, 0) //sRGB, HDTV

/* simple threshold with mpv glsl
Strength*desaturation [0 to1.0], 0: full color, 1: grayscale.
*/

vec4 hook()  {
   vec4 c0 = HOOKED_texOff(0);
   float desaturation = smoothstep(Thresh + w, Thresh - w, dot(c0, CoefLuma));
   // return vec4(desaturation, 1);
   c0.rgb = mix(c0.rgb, vec3(dot(c0, CoefLuma)), Strength*desaturation);

   return c0;
}