SDL_WaitForGPUSwapchain(3)

💖 SDL_WaitForGPUSwapchain 💖

ok so bestie, this one lives in the SDL3 FUNCTIONS section of the manual (that's the <pink>SDL_WaitForGPUSwapchain(3)</pink> page, iykyk) and it is exactly the kind of function that saves you from spinning in a loop like a chaotic little gremlin. Let's get into it.

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✨ NAME ✨

SDL_WaitForGPUSwapchain — blocks the thread until a swapchain texture is available to be acquired. literally just vibes and patience, no cap 🧘♀️

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✨ SYNOPSIS ✨

#include <SDL3/SDL_gpu.h>

bool SDL_WaitForGPUSwapchain(
    SDL_GPUDevice *device,
    SDL_Window *window);

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✨ FUNCTION PARAMETERS ✨

• device — a GPU context. that's your whole GPU situation right there 🎀
• window — a window that has been claimed. claimed, bestie, not just any old window lying around 👑

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✨ RETURN VALUE ✨

Returns true on success, false on failure 🫶

and if it fails? call SDL_GetError() for more information. the error message is the group chat receipts, go read them 😭

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✨ THREAD SAFETY ✨

⚠️ ok this is the important one: this function should only be called from the thread that created the window.

like. the thread that made the window is the only one allowed to talk to it. main character energy only, no side quests from other threads 🙈

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✨ AVAILABILITY ✨

this function is available since SDL 3.2.0 ⭐ so if you're on something older, it's giving "not yet, babe" 💀

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✨ SEE ALSO ✨

• SDL_AcquireGPUSwapchainTexture(3)
• SDL_WaitAndAcquireGPUSwapchainTexture(3)
• SDL_SetGPUAllowedFramesInFlight(3)

the whole swapchain friend group, obsessed 💅

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and that's the page, bestie!! brought to you by Simple Directmedia Layer, running SDL 3.4.18 — go forth and wait for your swapchain texture like the icon you are 🌈🦋💜