I've come across a problem with a pdf that uses a multiply blend mode for two images.
Using the e_GDIPlus rasterizer this mode seems to be ignored and one of the images obscures the view of the other image.
Using the e_BuiltIn rasterizer the images are displayed with the correct transparency but it is slower at drawing the page.
Is there any way to raise an error or detect that there is a problem when using the e_GDIPlus rasterizer?
That way I could try to use e_GDIPlus first and then switch to e_BuiltIn if there is a problem.