framebuffer: Bail out if the viewport has negative size

2011-05-25 16:49:09 +01:00 · 2011-05-25 16:49:09 +01:00 · 19e1dcff23
commit 19e1dcff23
parent eb81ec945c
1 changed files with 4 additions and 0 deletions
--- a/cogl/cogl-framebuffer.c
+++ b/cogl/cogl-framebuffer.c
@ -1413,6 +1413,10 @@ _cogl_framebuffer_flush_state (CoglFramebuffer *draw_buffer,
    {
      float gl_viewport_y;

+      if (draw_buffer->viewport_width < 0
+          || draw_buffer->viewport_height < 0)
+        return;
+
      /* Convert the Cogl viewport y offset to an OpenGL viewport y offset
       * NB: OpenGL defines its window and viewport origins to be bottom
       * left, while Cogl defines them to be top left.