Small Linux demo toolkit
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#include <stdlib.h>
#include <glib.h>
#include <gtk/gtk.h>
#include <GL/gl.h>
static void setup(GtkGLArea *gl)
{
gtk_gl_area_make_current(gl);
}
static gboolean render(GtkGLArea *gl, GdkGLContext *ctx)
{
glBegin(GL_TRIANGLES);
glColor3f(0.1, 0.2, 0.3);
glVertex3f(0, 0, 0);
glVertex3f(1, 0, 0);
glVertex3f(0, 1, 0);
glEnd();
return TRUE;
}
int main(void) {
/* skip one param, who needs it anyway */
((void (*)(int *))gtk_init)(NULL);
/* setup window */
GtkWidget *window = gtk_window_new(GTK_WINDOW_TOPLEVEL);
g_signal_connect(window, "destroy", gtk_main_quit, NULL);
GtkWidget *gl = gtk_gl_area_new();
gtk_container_add(GTK_CONTAINER(window), gl);
g_signal_connect(gl, "realize", G_CALLBACK(setup), NULL);
g_signal_connect(gl, "render", G_CALLBACK(render), NULL);
/* show window */
gtk_widget_show_all(window);
gtk_window_fullscreen(window);
gtk_main();
exit(0);
}