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Type: Posts; User: ileben

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  1. I played around with calculation a little more...

    I played around with calculation a little more and found an exact case that exposes what was actually confusing me (where premultiplied and non-premultiplied blending differ). In this case I take the...
  2. So you say (only RGB written): Output = Src...

    So you say (only RGB written):
    Output = Src (0.5, 0, 0) + Dest (1, 1, 1) * (1-Src.Alpha(0.5)) =
    = (0.5, 0, 0) + (0.5, 0.5, 0.5) = (1, 0.5, 0.5)

    But now, thats a premultiplied color...
  3. That's true.. It never blends with the...

    That's true.. It never blends with the background, and the alpha is ignored, or better said: The alpha is copied onto the drawing surface unmodified. If you want blending use VG_BLEND_SRC instead....
  4. Confusing points in the spec (blending, clip paths, etc.)

    I am confused regarding the actual implementation of certain OpenVG functionality. A few of the definitions in the spec seem very strange to me.

    1) VG_BLEND_SRC

    E.g. I've browsed dozens of...
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