summaryrefslogtreecommitdiff
path: root/libs/hwui/ProgramCache.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'libs/hwui/ProgramCache.cpp')
-rw-r--r--libs/hwui/ProgramCache.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/libs/hwui/ProgramCache.cpp b/libs/hwui/ProgramCache.cpp
index e9b22e20bc18..41adda15f367 100644
--- a/libs/hwui/ProgramCache.cpp
+++ b/libs/hwui/ProgramCache.cpp
@@ -240,8 +240,9 @@ const char* gFS_Main_ModulateColor =
const char* gFS_Main_ApplyVertexAlphaLinearInterp =
" fragColor *= alpha;\n";
const char* gFS_Main_ApplyVertexAlphaShadowInterp =
- " fragColor *= (1.0 - cos(alpha)) / 2.0;\n";
-
+ // Use a gaussian function for the shadow fall off. Note that alpha here
+ // is actually (1.0 - alpha) for saving computation.
+ " fragColor *= exp(- alpha * alpha * 4.0) - 0.018;\n";
const char* gFS_Main_FetchTexture[2] = {
// Don't modulate
" fragColor = texture2D(baseSampler, outTexCoords);\n",