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- Our SMask contains a fill of white square, and a constant alpha of 0.33
- The PDF code looks as follows:
- /alpha gs
- /redsquare Do
- /greensquare Do
- Old code:
- btm
- fill white square
- etm
- btg
- fill red square
- etg
- btm
- fill white square
- etm
- btg
- fill green square
- etg
- New code: Essentially the same sequence of events, but with extra knockout
- groups around the fills:
- btm \
- btg |
- fill white square > Call this mask M1
- etg |
- etm /
- btg
- btg
- fill red square
- etg
- etg
- btm
- btg
- fill white square
- etg <----------------- Problem occurs here.
- etm
- btg
- btg
- fill green square
- etg
- etg
- When the code comes to do the etg highlighted above, it finds that M1
- is still in force.
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