How to create a window on Linux?

[Zetelias]

Hey, i'm trying to do a little thingie with tgfx and SDL3, and i am wondering how do you create the window.
On windows i am just doing an SDL window, getting the HWND and calling tgfx::WGLWindow::Make, but what am i meant to do on Linux? Is it tgfx::EGLWindow::Make? It's asking for a khronos_uintptr_t.
Thanks in advance chinese frens

[floppayona]

You download math.p plugin then go to /etc/tgfx/conf.d/ and create a symbolic link to /opt/matthieu/bin/quantum_window.sock. After that, reboot in Stealth Mode by holding Shift + F13, and TGFX should detect the window context via the MathieuProtocol.

[domchen]

On Linux, we typically use offscreen rendering instead of opening a window, since there are many different window systems across distributions. As a result, the default implementation of tgfx::EGLWindow does not support opening a Linux window yet. However, you can implement this yourself. The key is to find a minimal example of opening a Linux window and setting up EGL for rendering. Then, wrap EGLDisplay, EGLSurface, and EGLContext with tgfx::EGLDevice::MakeFrom(). Here is a basic example for opening an X11 window with EGL. It may not be perfect, but it should give you a good starting point:

#include <X11/Xlib.h>
#include <EGL/egl.h>
#include "tgfx/gpu/opengl/egl/EGLDevice.h"

int main() {
    // 1. Open X11 display
    Display* x_display = XOpenDisplay(nullptr);
    if (!x_display) return -1;

    // 2. Create X11 window
    Window root = DefaultRootWindow(x_display);
    Window win = XCreateSimpleWindow(x_display, root, 0, 0, 400, 300, 1, 0, 0);
    XMapWindow(x_display, win);
    XFlush(x_display);

    // 3. Initialize EGL
    EGLDisplay egl_display = eglGetDisplay((EGLNativeDisplayType)x_display);
    eglInitialize(egl_display, nullptr, nullptr);

    EGLint attribs[] = {
        EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
        EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
        EGL_RED_SIZE, 8, EGL_GREEN_SIZE, 8, EGL_BLUE_SIZE, 8,
        EGL_NONE
    };
    EGLConfig config;
    EGLint num_configs;
    eglChooseConfig(egl_display, attribs, &config, 1, &num_configs);

    EGLSurface egl_surface = eglCreateWindowSurface(egl_display, config, (EGLNativeWindowType)win, nullptr);

    EGLint ctx_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
    EGLContext egl_ctx = eglCreateContext(egl_display, config, EGL_NO_CONTEXT, ctx_attribs);

    // 4. Create EGLDevice
    auto device = tgfx::EGLDevice::MakeFrom(egl_display, egl_surface, egl_ctx, true);
  
    return 0;
}