SDL_GL_SetAttribute(3)

✨ SDL_GL_SetAttribute ✨

okay bestie, welcome to the SDL3 FUNCTIONS corner of the SDL_GL_SetAttribute(3) manual page 💖 this is the one where you tell SDL what kind of OpenGL window you want before you actually make it. manifesting your GL vibes, basically 🦋

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🌸 NAME 🌸

SDL_GL_SetAttribute — set an OpenGL window attribute before window creation.

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🎀 SYNOPSIS 🎀

#include <SDL3/SDL_video.h>

bool SDL_GL_SetAttribute(SDL_GLAttr attr, int value);

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💅 DESCRIPTION 💅

so this function sets the OpenGL attribute attr to value. that's it, that's the whole job, and it ate 🔥

the requested attributes should be set before creating an OpenGL window. like, before. pre-game. the vibe check happens at window-creation time, so if you show up late with your requests, that's on you 😭

and then — and this is the part people always forget — you should use SDL_GL_GetAttribute() to check the values after creating the OpenGL context, because the values you actually get can differ from the ones you requested. you ask for one thing, the driver says "bestie no" and gives you something else. it's giving negotiation, not a command 💀

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🌈 FUNCTION PARAMETERS 🌈

• attr — an enum value specifying the OpenGL attribute to set. like, which vibe are we customising 👑
• value — the desired value for the attribute. what you're wishing for ✨

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⭐ RETURN VALUE ⭐

Returns true on success or false on failure. and if it's false, call SDL_GetError() for more information — she will tell you what went wrong, no cap 🫶

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🧚 THREAD SAFETY 🧚

This function should only be called on the main thread. main character energy only, periodt 💅 do not be passing this off to some side thread, it will not end well 🙈

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💜 AVAILABILITY 💜

This function is available since SDL 3.2.0. iconic behaviour, honestly 🎀

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🔥 SEE ALSO 🔥

• SDL_GL_CreateContext(3)
• SDL_GL_GetAttribute(3)
• SDL_GL_ResetAttributes(3)

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and that's the whole page, bestie!! 🌸 this one's brought to you by the legends at Simple Directmedia Layer, running SDL 3.4.18, and yes the page itself is literally named SDL_GL_SetAttribute(3) — go set some attributes and slay 💖✨🦋