void
test_alpha_test (void)
{
CoglTexture *tex = COGL_TEXTURE (create_texture (test_ctx));
CoglPipeline *pipeline = cogl_pipeline_new (test_ctx);
int fb_width = cogl_framebuffer_get_width (test_fb);
int fb_height = cogl_framebuffer_get_height (test_fb);
CoglColor clear_color;
cogl_pipeline_set_layer_texture (pipeline, 0, tex);
cogl_pipeline_set_layer_filters (pipeline, 0,
COGL_PIPELINE_FILTER_NEAREST,
COGL_PIPELINE_FILTER_NEAREST);
cogl_pipeline_set_alpha_test_function (pipeline,
COGL_PIPELINE_ALPHA_FUNC_GEQUAL,
254 / 255.0f /* alpha reference */);
cogl_color_init_from_4ub (&clear_color, 0x00, 0x00, 0xff, 0xff);
cogl_framebuffer_clear (test_fb,
COGL_BUFFER_BIT_COLOR,
&clear_color);
cogl_framebuffer_draw_rectangle (test_fb,
pipeline,
-1, -1,
1, 1);
cogl_object_unref (pipeline);
cogl_object_unref (tex);
/* The left side of the framebuffer should use the first pixel from
* the texture which is red */
test_utils_check_region (test_fb,
2, 2,
fb_width / 2 - 4,
fb_height - 4,
0xff0000ff);
/* The right side of the framebuffer should use the clear color
* because the second pixel from the texture is clipped from the
* alpha test */
test_utils_check_region (test_fb,
fb_width / 2 + 2,
2,
fb_width / 2 - 4,
fb_height - 4,
0x0000ffff);
if (cogl_test_verbose ())
g_print ("OK\n");
}
static gboolean
paint_cb (void *user_data)
{
CoglandCompositor *compositor = user_data;
GList *l;
for (l = compositor->outputs; l; l = l->next)
{
CoglandOutput *output = l->data;
CoglFramebuffer *fb = COGL_FRAMEBUFFER (output->onscreen);
GList *l2;
cogl_push_framebuffer (fb);
#if 0
cogl_framebuffer_clear (fb, COGL_BUFFER_BIT_COLOR);
#else
cogl_clear (&black, COGL_BUFFER_BIT_COLOR);
#endif
cogl_primitive_draw (compositor->triangle);
for (l2 = compositor->surfaces; l2; l2 = l2->next)
{
CoglandSurface *surface = l2->data;
if (surface->buffer)
{
CoglTexture2D *texture = surface->buffer->texture;
cogl_set_source_texture (texture);
cogl_rectangle (-1, 1, 1, -1);
}
wl_display_post_frame (compositor->wayland_display,
&surface->wayland_surface, get_time ());
}
cogl_framebuffer_swap_buffers (fb);
cogl_pop_framebuffer ();
}
return TRUE;
}
CoglPipeline *
_st_create_shadow_pipeline_from_actor (StShadow *shadow_spec,
ClutterActor *actor)
{
CoglPipeline *shadow_pipeline = NULL;
if (CLUTTER_IS_TEXTURE (actor))
{
CoglTexture *texture;
texture = clutter_texture_get_cogl_texture (CLUTTER_TEXTURE (actor));
shadow_pipeline = _st_create_shadow_pipeline (shadow_spec, texture);
}
else
{
CoglTexture *buffer;
CoglOffscreen *offscreen;
CoglFramebuffer *fb;
ClutterActorBox box;
CoglColor clear_color;
float width, height;
CoglError *catch_error = NULL;
clutter_actor_get_allocation_box (actor, &box);
clutter_actor_box_get_size (&box, &width, &height);
if (width == 0 || height == 0)
return NULL;
buffer = cogl_texture_new_with_size (width,
height,
COGL_TEXTURE_NO_SLICING,
COGL_PIXEL_FORMAT_ANY);
if (buffer == NULL)
return NULL;
offscreen = cogl_offscreen_new_with_texture (buffer);
fb = COGL_FRAMEBUFFER (offscreen);
if (!cogl_framebuffer_allocate (fb, &catch_error))
{
cogl_error_free (catch_error);
cogl_object_unref (buffer);
return NULL;
}
cogl_color_init_from_4ub (&clear_color, 0, 0, 0, 0);
/* XXX: There's no way to render a ClutterActor to an offscreen
* as it uses the implicit API. */
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
cogl_push_framebuffer (fb);
G_GNUC_END_IGNORE_DEPRECATIONS;
cogl_framebuffer_clear (fb, COGL_BUFFER_BIT_COLOR, &clear_color);
cogl_framebuffer_translate (fb, -box.x1, -box.y1, 0);
cogl_framebuffer_orthographic (fb, 0, 0, width, height, 0, 1.0);
clutter_actor_set_opacity_override (actor, 255);
clutter_actor_paint (actor);
clutter_actor_set_opacity_override (actor, -1);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS;
cogl_pop_framebuffer ();
G_GNUC_END_IGNORE_DEPRECATIONS;
cogl_object_unref (fb);
shadow_pipeline = _st_create_shadow_pipeline (shadow_spec, buffer);
cogl_object_unref (buffer);
}
return shadow_pipeline;
}
/* XXX: it's expected that we'll deprecated this with
* cogl_framebuffer_clear at some point. */
void
cogl_clear (const CoglColor *color, unsigned long buffers)
{
cogl_framebuffer_clear (cogl_get_draw_framebuffer (), buffers, color);
}
