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825a51b898
This adds a simple standalone Cogl application that can be used to smoke test a standalone build of Cogl without Clutter. This also adds an x11-foreign app that shows how a toolkit can ask Cogl to draw to an X Window that it owns instead of Cogl being responsible for automatically creating and mapping an X Window for CoglOnscreen.
137 lines
3.8 KiB
C
137 lines
3.8 KiB
C
#include <cogl/cogl.h>
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#include <glib.h>
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#include <stdio.h>
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#include <X11/Xlib.h>
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#include <X11/Xutil.h>
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int
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main (int argc, char **argv)
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{
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Display *xdpy;
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CoglRenderer *renderer;
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CoglSwapChain *chain;
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CoglOnscreenTemplate *onscreen_template;
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CoglDisplay *display;
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CoglContext *ctx;
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CoglOnscreen *onscreen;
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CoglFramebuffer *fb;
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GError *error = NULL;
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guint32 visual;
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XVisualInfo template, *xvisinfo;
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int visinfos_count;
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XSetWindowAttributes xattr;
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unsigned long mask;
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Window xwin;
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/* Since we want to test external ownership of the X display,
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* connect to X manually... */
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xdpy = XOpenDisplay (NULL);
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if (!xdpy)
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{
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fprintf (stderr, "Failed to open X Display\n");
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return 1;
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}
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/* Conceptually choose a GPU... */
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renderer = cogl_renderer_new ();
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/* FIXME: This should conceptually be part of the configuration of
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* a renderer. */
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cogl_renderer_xlib_set_foreign_display (renderer, xdpy);
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if (!cogl_renderer_connect (renderer, &error))
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{
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fprintf (stderr, "Failed to connect to a renderer: %s\n",
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error->message);
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}
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chain = cogl_swap_chain_new ();
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cogl_swap_chain_set_has_alpha (chain, TRUE);
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/* Conceptually declare upfront the kinds of windows we anticipate
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* creating so that when we configure the display pipeline we can avoid
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* having an impedance miss-match between the format of windows and the
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* format the display pipeline expects. */
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onscreen_template = cogl_onscreen_template_new (chain);
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cogl_object_unref (chain);
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/* Conceptually setup a display pipeline */
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display = cogl_display_new (renderer, onscreen_template);
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cogl_object_unref (renderer);
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if (!cogl_display_setup (display, &error))
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{
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fprintf (stderr, "Failed to setup a display pipeline: %s\n",
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error->message);
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return 1;
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}
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ctx = cogl_context_new (display, &error);
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if (!ctx)
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{
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fprintf (stderr, "Failed to create context: %s\n", error->message);
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return 1;
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}
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/* Eventually we want to get rid of any "default context" but for now it's
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* needed... */
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cogl_set_default_context (ctx);
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onscreen = cogl_onscreen_new (ctx, 640, 480);
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/* We want to test that Cogl can handle foreign X windows... */
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visual = cogl_onscreen_x11_get_visual_xid (onscreen);
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if (!visual)
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{
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fprintf (stderr, "Failed to query an X visual suitable for the "
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"configured CoglOnscreen framebuffer\n");
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return 1;
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}
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template.visualid = visual;
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xvisinfo = XGetVisualInfo (xdpy, VisualIDMask, &template, &visinfos_count);
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/* window attributes */
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xattr.background_pixel = WhitePixel (xdpy, DefaultScreen (xdpy));
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xattr.border_pixel = 0;
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xattr.colormap = XCreateColormap (xdpy,
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DefaultRootWindow (xdpy),
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xvisinfo->visual,
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AllocNone);
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mask = CWBorderPixel | CWColormap;
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xwin = XCreateWindow (xdpy,
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DefaultRootWindow (xdpy),
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0, 0,
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800, 600,
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0,
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xvisinfo->depth,
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InputOutput,
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xvisinfo->visual,
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mask, &xattr);
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XFree (xvisinfo);
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cogl_onscreen_x11_set_foreign_window_xid (onscreen, xwin);
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fb = COGL_FRAMEBUFFER (onscreen);
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/* Eventually there will be an implicit allocate on first use so this
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* will become optional... */
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if (!cogl_framebuffer_allocate (fb, &error))
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{
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fprintf (stderr, "Failed to allocate framebuffer: %s\n", error->message);
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return 1;
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}
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XMapWindow (xdpy, xwin);
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cogl_push_framebuffer (fb);
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cogl_set_source_color4f (1, 0, 0, 1);
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for (;;)
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{
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cogl_rectangle (-1, 1, 1, -1);
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cogl_framebuffer_swap_buffers (fb);
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}
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return 0;
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}
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