| 512e643ce83b1d48ad9630a3622276f795cf4fb2 |
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10-Sep-2014 |
ztenghui <ztenghui@google.com> |
Re-triangulate the spot shadow.
Fix the valid umbra detection.
This looks better b/c every vertex will have one ray shooting at it, such that
we don't miss the corner.
This performs better too, due to the polygon intersection is removed and less ray
intersection. 2x performance for rect and circle for spot shadow in test app.
b/17288227
b/15598793
b/16712006
Change-Id: I4a5ee397b9e192e93c8e35e6260b499e3e38a6f4
/frameworks/base/libs/hwui/SpotShadow.h
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| c50a03d78aaedd0003377e98710e7038bda330e9 |
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21-Aug-2014 |
ztenghui <ztenghui@google.com> |
Improve the spot shadow computation.
Get rid of compuation of the intersection for penumbra and convex hull for umbra.
Use simple circle / normal to compute the penumbra and simple intersection for umbra.
The new way could be 2x to 4x faster from rectangle to round shape.
And this part is roughly half of the shadow computation, or 2/3 of spot shadow
computation.
This improve the spot shadow spikeness too.
b/16712006
b/14976551
Change-Id: I02911784868731369efa73f76fc915bc08248600
/frameworks/base/libs/hwui/SpotShadow.h
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| 05f3d6e5111fd08df5cd9aae2c3d28399dc0e7f5 |
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03-Jun-2014 |
Chris Craik <ccraik@google.com> |
Tessellate on worker threads
Tessellate and cache (where possible) shadow and round rect
tessellation tasks.
Change-Id: I2cfda8e11d83d51ea74af871235cf26e8f831d40
/frameworks/base/libs/hwui/SpotShadow.h
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| 2e023f3827dfc0dfc1ed7c3dd54d02b4a993f0b4 |
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29-Apr-2014 |
ztenghui <ztenghui@google.com> |
Make sure the theta is correctly represented and incoming polygon is CW for shadow.
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
/frameworks/base/libs/hwui/SpotShadow.h
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| 50ecf849cb7ccc3482517b74d2214b347927791e |
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12-Mar-2014 |
ztenghui <ztenghui@google.com> |
Create one hole inside the umbra area to avoid overdraw.
bug:13439450
Change-Id: I859575196bd5a3029f447883025a6ec3a1f1face
/frameworks/base/libs/hwui/SpotShadow.h
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| 726118b35240957710d4d85fb5747e2ba8b934f7 |
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08-Mar-2014 |
Chris Craik <ccraik@google.com> |
Improve shadow tessellation performance
- Tune and simplify shadow parameters
- Remove additional inner rings
- Improve polygon ray casting algorithm
Change-Id: If0f28b2d66ae0480b675942bb65e8fcd2864425d
/frameworks/base/libs/hwui/SpotShadow.h
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| 63d41abb40b3ce40d8b9bccb1cf186e8158a3687 |
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14-Feb-2014 |
ztenghui <ztenghui@google.com> |
Use pre-computed index to draw the shadow.
Also draw the umbra part as triangle fans instead of zig zag fashion.
b/12840179
Change-Id: Iaa5d15e77351acdd71f076bd8f9bb2d4d2b92faf
/frameworks/base/libs/hwui/SpotShadow.h
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| f5ca8b4cb178008472e67fa0ae6a3e3fa75d7952 |
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28-Jan-2014 |
ztenghui <ztenghui@google.com> |
Merge close vertices in a better way.
And add more verification code for testing purpose.
Change-Id: I5bc4f69e6582c02fd03106af9a98abd05a6755b7
/frameworks/base/libs/hwui/SpotShadow.h
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| 7b4516e7ea552ad08d6e7277d311ef11bd8f12e8 |
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07-Jan-2014 |
ztenghui <ztenghui@google.com> |
Calculate and show the shadow from a spot light.
Change-Id: Ia558852e8cde5d33866b22875eb501e4c6858819
/frameworks/base/libs/hwui/SpotShadow.h
|