ztenghui
2e023f3827
Make sure the theta is correctly represented and incoming polygon is CW for shadow.
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Now the theta = 0 should be on +x axis.
And cos(theta) should correctly represent x value.
Without this fix, the poly theta (from atan2) can be wrongly rotated 90 degrees.
Also, make sure the incoming polygon is CW for the shadow system.
This fix visual artifacts in recent regression for spot shadows.
bug:13553955
Change-Id: I9bbf54db094e7f133326da4dae4610962da849c1
2014-04-28 16:43:13 -07:00
ztenghui
50ecf849cb
Create one hole inside the umbra area to avoid overdraw.
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bug:13439450
Change-Id: I859575196bd5a3029f447883025a6ec3a1f1face
2014-03-17 10:10:02 -07:00
Chris Craik
726118b352
Improve shadow tessellation performance
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- Tune and simplify shadow parameters
- Remove additional inner rings
- Improve polygon ray casting algorithm
Change-Id: If0f28b2d66ae0480b675942bb65e8fcd2864425d
2014-03-11 15:23:36 -07:00
ztenghui
63d41abb40
Use pre-computed index to draw the shadow.
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Also draw the umbra part as triangle fans instead of zig zag fashion.
b/12840179
Change-Id: Iaa5d15e77351acdd71f076bd8f9bb2d4d2b92faf
2014-02-25 14:18:25 -08:00
ztenghui
f5ca8b4cb1
Merge close vertices in a better way.
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And add more verification code for testing purpose.
Change-Id: I5bc4f69e6582c02fd03106af9a98abd05a6755b7
2014-01-29 09:04:04 -08:00
ztenghui
7b4516e7ea
Calculate and show the shadow from a spot light.
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Change-Id: Ia558852e8cde5d33866b22875eb501e4c6858819
2014-01-10 17:18:53 -08:00
