SDL_SetGammaRamp(3)

SDL_SetGammaRamp 💅✨

okay bestie, welcome to the SDL API Reference 🎀 this lil page is all about SDL_SetGammaRamp — literally the glow-up button for your display 🦋

✨ NAME ✨

SDL_SetGammaRamp — sets the color gamma lookup tables for the display 🌈

✨ SYNOPSIS ✨

#include "SDL.h"

int SDL_SetGammaRamp(Uint16 *redtable, Uint16 *greentable, Uint16 *bluetable);

✨ DESCRIPTION ✨

so here's the vibe: this function sets the gamma lookup tables for the display, one per color component 💖 each table is an array of 256 Uint16 values, and it represents a mapping between the input and the output for that channel. the way it works is: the input is the index into the array, and the output is the 16-bit gamma value sitting at that index, scaled to the output color precision 👑

you can pass NULL to any of the channels and that channel just... stays unchanged, no touchy 🙈

ngl this one adjusts gamma based on lookup tables — if you'd rather have the gamma calculated based on a "gamma function" parameter instead, that's what SDL_SetGamma is for, iykyk 🌸

also, important, fr fr: not all display hardware is able to change gamma 💀 like, some monitors simply said no and that's that.

✨ RETURN VALUE ✨

returns -1 on error — or if gamma adjustment just isn't supported 😭

✨ SEE ALSO ✨

• SDL_SetGamma
• SDL_GetGammaRamp

k that's the whole page bestie, go forth and fix ur colors 💜

signing off with the SDL energy 🧚 — this one's dated Tue 11 Sep 2001, 23:01 ⭐ periodt 💅