Changes between Initial Version and Version 1 of Ticket #2946, comment 4


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Timestamp:
Jul 24, 2014, 9:49:42 AM (10 years ago)
Author:
pulkomandy

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  • Ticket #2946, comment 4

    initial v1  
    88The gradients drawing will be done one column at a time, and it will look good. If you scroll a bit faster (for example using the scrollbar knob), you can see the vertical bands using the same alpha value for each redraw rectangle.
    99
    10 I wanted to try using the unpacked scanline rasterizer using ClipToPicture but things went even worse. Will open a separate report for that.
     10Using ClipToPicture, I can make the rasterizing use unpacked scanlines, and this works fine. So I think the problem is that the packed scanline rasterizer doesn't handle changes in the alpha channel properly, and expect it to be constant for each span.