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#include <cairo-cogl.h>
#include "demo.h"
#include <stdlib.h>
#define container_of(ptr, type, member) ({ \
const __typeof__ (((type *) 0)->member) *mptr__ = (ptr); \
(type *) ((char *) mptr__ - offsetof (type, member)); \
})
struct cogl_device {
struct device base;
struct framebuffer fb;
CoglFramebuffer *cogl;
cairo_device_t *device;
};
static struct framebuffer *
get_fb (struct device *abstract_device)
{
struct cogl_device *device = (struct cogl_device *) abstract_device;
return &device->fb;
}
static struct cogl_device *
get_device (struct framebuffer *fb)
{
return container_of(fb, struct cogl_device, fb);
}
static void
destroy (struct framebuffer *fb)
{
}
static void
show (struct framebuffer *fb)
{
struct cogl_device *device = get_device (fb);
cairo_cogl_surface_end_frame (fb->surface);
cogl_framebuffer_swap_buffers (device->cogl);
}
struct device *
cogl_open (int argc, char **argv)
{
struct cogl_device *device;
CoglContext *context;
CoglOnscreen *onscreen;
int width = 800, height = 600;
device = malloc(sizeof(struct cogl_device));
device->base.name = "cogl";
device->base.get_framebuffer = get_fb;
device->base.width = width;
device->base.height = height;
device->fb.device = &device->base;
device->fb.show = show;
device->fb.destroy = destroy;
context = cogl_context_new (NULL, NULL);
device->device = cairo_cogl_device_create (context);
onscreen = cogl_onscreen_new (context, width, height);
device->cogl = COGL_FRAMEBUFFER (onscreen);
cogl_onscreen_show (onscreen);
cogl_push_framebuffer (device->cogl);
cogl_ortho (0, width, height, 0, -1, 100);
cogl_pop_framebuffer ();
device->base.scanout =
cairo_cogl_surface_create (device->device, device->cogl);
device->fb.surface = device->base.scanout;
return &device->base;
}
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