static CoglClipStack *
_cogl_clip_stack_push_from_path (CoglClipStack *stack,
CoglPath *path,
CoglMatrixEntry *modelview_entry,
CoglMatrixEntry *projection_entry,
const float *viewport)
{
float x_1, y_1, x_2, y_2;
_cogl_path_get_bounds (path, &x_1, &y_1, &x_2, &y_2);
/* If the path is a simple rectangle then we can divert to pushing a
rectangle clip instead which usually won't involve the stencil
buffer */
if (_cogl_path_is_rectangle (path))
return _cogl_clip_stack_push_rectangle (stack,
x_1, y_1,
x_2, y_2,
modelview_entry,
projection_entry,
viewport);
else
{
CoglPrimitive *primitive = _cogl_path_get_fill_primitive (path);
return _cogl_clip_stack_push_primitive (stack,
primitive,
x_1, y_1, x_2, y_2,
modelview_entry,
projection_entry,
viewport);
}
}
CoglClipStack *
_cogl_clip_stack_push_from_path (CoglClipStack *stack,
CoglPath *path,
CoglMatrixEntry *modelview_entry,
CoglMatrixEntry *projection_entry,
const float *viewport)
{
float x_1, y_1, x_2, y_2;
_cogl_path_get_bounds (path, &x_1, &y_1, &x_2, &y_2);
/* If the path is a simple rectangle then we can divert to pushing a
rectangle clip instead which usually won't involve the stencil
buffer */
if (_cogl_path_is_rectangle (path))
return _cogl_clip_stack_push_rectangle (stack,
x_1, y_1,
x_2, y_2,
modelview_entry,
projection_entry,
viewport);
else
{
CoglClipStackPath *entry;
CoglMatrix modelview;
CoglMatrix projection;
float transformed_corners[8];
entry = _cogl_clip_stack_push_entry (stack,
sizeof (CoglClipStackPath),
COGL_CLIP_STACK_PATH);
entry->path = cogl_path_copy (path);
entry->matrix_entry = _cogl_matrix_entry_ref (modelview_entry);
_cogl_matrix_entry_get (modelview_entry, &modelview);
_cogl_matrix_entry_get (projection_entry, &projection);
get_transformed_corners (x_1, y_1, x_2, y_2,
&modelview,
&projection,
viewport,
transformed_corners);
_cogl_clip_stack_entry_set_bounds ((CoglClipStack *) entry,
transformed_corners);
return (CoglClipStack *) entry;
}
}
