--- deliantra/Deliantra-Client/DC.pm	2006/04/07 20:55:32	1.7
+++ deliantra/Deliantra-Client/DC.pm	2006/04/08 13:36:25	1.8
@@ -123,6 +123,12 @@
    $class->new_from_surface (bless \$surface, SDL::Surface::)
 }
 
+sub new_from_opengl {
+   my ($class, $w, $h, $cb) = @_;
+
+   $class->_new (width => $w, height => $h, render => $cb)
+}
+
 sub upload {
    my ($self) = @_;
 
@@ -132,6 +138,11 @@
 
    if (exists $self->{data}) {
       $data = $self->{data};
+   } elsif (exists $self->{rendercb}) {
+      glViewport 0, 0, $self->{width}, $self->{height};
+      glClear GL_COLOR_BUFFER_BIT;
+
+      $self->{rendercb}->($self, $self->{width}, $self->{height});
    } else {
       my $pb = new Gtk2::Gdk::PixbufLoader;
       $pb->write ($self->{image});
@@ -155,13 +166,21 @@
    glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP;
    glTexParameter GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP;
    
-   glTexImage2D GL_TEXTURE_2D, 0,
-                GL_RGBA8,
-                $self->{width}, $self->{height},
-                0,
-                GL_RGBA,
-                GL_UNSIGNED_BYTE,
-                $data;
+   if (defined $data) {
+      glTexImage2D GL_TEXTURE_2D, 0,
+                   GL_RGBA8,
+                   $self->{width}, $self->{height},
+                   0,
+                   GL_RGBA,
+                   GL_UNSIGNED_BYTE,
+                   $data;
+   } else {
+      glCopyTexImage2D GL_TEXTURE_2D, 0,
+                   GL_RGBA8,
+                   0, 0,
+                   $self->{width}, $self->{height},
+                   0;
+   }
 }
 
 sub DESTROY {