ae091f2cbb
To be a portable example this updates cogl-hello to use the glib mainloop instead of using g_poll. On OSX we plan to provide custom mainloop integration for glib which can't be abstracted by just using g_poll.
82 lines
2.3 KiB
C
82 lines
2.3 KiB
C
#include <cogl/cogl.h>
|
|
#include <glib.h>
|
|
#include <stdio.h>
|
|
|
|
typedef struct _Data
|
|
{
|
|
CoglContext *ctx;
|
|
CoglFramebuffer *fb;
|
|
CoglPrimitive *triangle;
|
|
CoglPipeline *pipeline;
|
|
} Data;
|
|
|
|
static gboolean
|
|
paint_cb (void *user_data)
|
|
{
|
|
Data *data = user_data;
|
|
|
|
cogl_framebuffer_clear4f (data->fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
|
|
cogl_framebuffer_draw_primitive (data->fb, data->pipeline, data->triangle);
|
|
cogl_onscreen_swap_buffers (COGL_ONSCREEN (data->fb));
|
|
|
|
/* If the driver can deliver swap complete events then we can remove
|
|
* the idle paint callback until we next get a swap complete event
|
|
* otherwise we keep the idle paint callback installed and simply
|
|
* paint as fast as the driver will allow... */
|
|
if (cogl_has_feature (data->ctx, COGL_FEATURE_ID_SWAP_BUFFERS_EVENT))
|
|
return FALSE; /* remove the callback */
|
|
else
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
swap_complete_cb (CoglFramebuffer *framebuffer, void *user_data)
|
|
{
|
|
g_idle_add (paint_cb, user_data);
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
Data data;
|
|
CoglOnscreen *onscreen;
|
|
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}
|
|
};
|
|
GSource *cogl_source;
|
|
GMainLoop *loop;
|
|
|
|
data.ctx = cogl_context_new (NULL, &error);
|
|
if (!data.ctx) {
|
|
fprintf (stderr, "Failed to create context: %s\n", error->message);
|
|
return 1;
|
|
}
|
|
|
|
onscreen = cogl_onscreen_new (data.ctx, 640, 480);
|
|
cogl_onscreen_show (onscreen);
|
|
data.fb = COGL_FRAMEBUFFER (onscreen);
|
|
|
|
data.triangle = cogl_primitive_new_p2c4 (data.ctx,
|
|
COGL_VERTICES_MODE_TRIANGLES,
|
|
3, triangle_vertices);
|
|
data.pipeline = cogl_pipeline_new (data.ctx);
|
|
|
|
cogl_source = cogl_glib_source_new (data.ctx, G_PRIORITY_DEFAULT);
|
|
|
|
g_source_attach (cogl_source, NULL);
|
|
|
|
if (cogl_has_feature (data.ctx, COGL_FEATURE_ID_SWAP_BUFFERS_EVENT))
|
|
cogl_onscreen_add_swap_buffers_callback (COGL_ONSCREEN (data.fb),
|
|
swap_complete_cb, &data);
|
|
|
|
g_idle_add (paint_cb, &data);
|
|
|
|
loop = g_main_loop_new (NULL, TRUE);
|
|
g_main_loop_run (loop);
|
|
|
|
return 0;
|
|
}
|