diff options
| author | Chris Craik <ccraik@google.com> | 2014-08-12 14:31:35 -0700 |
|---|---|---|
| committer | Chris Craik <ccraik@google.com> | 2014-08-12 16:00:09 -0700 |
| commit | 91a8c7c62913c2597e3bf5a6d59d2ed5fc7ba4e0 (patch) | |
| tree | 22f6e0e41bccc3df2b4b053a5decddabe5382c95 /libs/hwui/AmbientShadow.cpp | |
| parent | ddc122ee5015f9ca0cc124a53c175aadf85f50ad (diff) | |
| download | frameworks_base-91a8c7c62913c2597e3bf5a6d59d2ed5fc7ba4e0.zip frameworks_base-91a8c7c62913c2597e3bf5a6d59d2ed5fc7ba4e0.tar.gz frameworks_base-91a8c7c62913c2597e3bf5a6d59d2ed5fc7ba4e0.tar.bz2 | |
Switch to cos interpolation of shadow alpha
bug:16852257
Updates default shadow opacities to compensate.
Also, update variable/constant naming related to vertex alpha.
Change-Id: I9055b4ac3c9ac305ca9d515f21b52d6aa6dc9c5c
Diffstat (limited to 'libs/hwui/AmbientShadow.cpp')
| -rw-r--r-- | libs/hwui/AmbientShadow.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/libs/hwui/AmbientShadow.cpp b/libs/hwui/AmbientShadow.cpp index 181230a..9cc83ed 100644 --- a/libs/hwui/AmbientShadow.cpp +++ b/libs/hwui/AmbientShadow.cpp @@ -117,10 +117,13 @@ void AmbientShadow::createAmbientShadow(bool isCasterOpaque, // inner ring of points float opacity = 1.0 / (1 + rayHeight[rayIndex] * heightFactor); + // NOTE: Shadow alpha values are transformed when stored in alphavertices, + // so that they can be consumed directly by gFS_Main_ApplyVertexAlphaShadowInterp + float transformedOpacity = acos(1.0f - 2.0f * opacity); AlphaVertex::set(&shadowVertices[rays + rayIndex], intersection.x, intersection.y, - opacity); + transformedOpacity); } if (isCasterOpaque) { |