mutter/examples/hello.c

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#include <cogl/cogl.h>
#include <glib.h>
#include <stdio.h>
int
main (int argc, char **argv)
{
CoglContext *ctx;
CoglOnscreen *onscreen;
CoglFramebuffer *fb;
GError *error = NULL;
CoglVertexP2C4 triangle_vertices[] = {
{0, 0.7, 0xff, 0x00, 0x00, 0x80},
{-0.7, -0.7, 0x00, 0xff, 0x00, 0xff},
{0.7, -0.7, 0x00, 0x00, 0xff, 0xff}
};
CoglPrimitive *triangle;
ctx = cogl_context_new (NULL, &error);
if (!ctx) {
fprintf (stderr, "Failed to create context: %s\n", error->message);
return 1;
}
onscreen = cogl_onscreen_new (ctx, 640, 480);
/* Eventually there will be an implicit allocate on first use so this
* will become optional... */
fb = COGL_FRAMEBUFFER (onscreen);
if (!cogl_framebuffer_allocate (fb, &error)) {
fprintf (stderr, "Failed to allocate framebuffer: %s\n", error->message);
return 1;
}
cogl_onscreen_show (onscreen);
cogl_push_framebuffer (fb);
triangle = cogl_primitive_new_p2c4 (COGL_VERTICES_MODE_TRIANGLES,
3, triangle_vertices);
for (;;) {
cogl_primitive_draw (triangle);
cogl_framebuffer_swap_buffers (fb);
}
return 0;
}