Attachment 35555 Details for Bug 27922 – glresize

[patch] glresize

glresize.c (text/plain), 2.39 KB, created by Chris Wilson on 2010-05-10 14:35:00 UTC

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Creator: Chris Wilson

Created: 2010-05-10 14:35:00 UTC

Size: 2.39 KB

patch

obsolete

>/*
> * Copyright (C) 2010 Nick Bowler
> *
> * License WTFPL2: Do What The Fuck You Want To Public License, version 2.
> * This is free software: you are free to do what the fuck you want to.
> * There is NO WARRANTY, to the extent permitted by law.
> *
> * In case the above is not acceptable, you may alternately choose the terms
> * of the MIT license: http://opensource.org/licenses/mit-license.php.
> */
>#include <stdio.h>
>#include <string.h>
>
>#include <X11/Xlib.h>
>#include <GL/gl.h>
>#include <GL/glx.h>
>
>static void resize(int w, int h)
>{
>	glMatrixMode(GL_PROJECTION);
>	glLoadIdentity();
>	glViewport(0, 0, w, h);
>	glOrtho(0, 1, 0, 1, -1, 1);
>	glMatrixMode(GL_MODELVIEW);
>}
>
>static void render(void)
>{
>	glClear(GL_COLOR_BUFFER_BIT);
>
>	glBegin(GL_LINE_LOOP);
>	glVertex2d(0.1, 0.1);
>	glVertex2d(0.9, 0.1);
>	glVertex2d(0.9, 0.9);
>	glVertex2d(0.1, 0.9);
>	glEnd();
>}
>
>int main(int argc, char **argv)
>{
>	int rgb_attribs[] = {
>		GLX_RGBA,
>		GLX_RED_SIZE, 1,
>		GLX_GREEN_SIZE, 1,
>		GLX_BLUE_SIZE, 1,
>		GLX_DOUBLEBUFFER,
>		None
>	};
>	Display *dpy;
>	XVisualInfo *vi;
>	GLXContext ctx;
>	Window win;
>	XSetWindowAttributes attr;
>	int screen_width, screen_height;
>	int width = 300, height = 300;
>	int x, y, w, h;
>	int state = 0;
>	int i;
>
>	dpy = XOpenDisplay (NULL);
>	vi = glXChooseVisual (dpy, DefaultScreen (dpy), rgb_attribs);
>
>	screen_width = WidthOfScreen (ScreenOfDisplay(dpy, DefaultScreen (dpy)));
>	screen_height = HeightOfScreen (ScreenOfDisplay(dpy, DefaultScreen (dpy)));
>
>	x = y = 0;
>	for (i = 1; i < argc; i++) {
>		if (strcmp(argv[i], "--single") == 0) {
>			rgb_attribs[7] = None;
>		} else if (strcmp(argv[i], "--offset") == 0) {
>			x = y = 1;
>		}
>	}
>
>	attr.colormap = XCreateColormap (dpy,
>					 RootWindow (dpy, vi->screen),
>					 vi->visual,
>					 AllocNone);
>	attr.border_pixel = 0;
>	attr.override_redirect = True;
>	win = XCreateWindow (dpy, DefaultRootWindow (dpy),
>			     x, y, width, height, 0,
>			     vi->depth, InputOutput, vi->visual,
>			     CWOverrideRedirect | CWBorderPixel | CWColormap,
>			     &attr);
>	XMapWindow (dpy, win);
>
>	ctx = glXCreateContext (dpy, vi, NULL, True);
>	XFree (vi);
>
>	w = width, h = height;
>	while (1) {
>		glXMakeCurrent (dpy, win, ctx);
>		resize(w, h);
>		render();
>
>		if (rgb_attribs[7])
>			glXSwapBuffers (dpy, win);
>		else
>			glFinish();
>		glXMakeCurrent (dpy, 0, 0);
>
>		if ((state = !state))
>			w = screen_width, h = screen_height;
>		else
>			w = width, h = height;
>		XResizeWindow (dpy, win, w, h);
>	}
>
>	return 0;
>}

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Attachments on bug 27922: 35380 | 35381 | 35382 | 35554 | 35555 | 35567 | 35569

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