Remove ambient clamp hack for analytic shadows.
The hack was added to make analytic ambient shadows match the geometric
ones exactly. Removing it does produce a slight difference, but it's
only visible at full black values (and then, only slightly) and this
makes room to pass a blend parameter for falloff.
Also fixes an issue with filling out arcs in the shadow tesselator.
Bug: skia:7486
Change-Id: If78d0104df7e18f4320c1658af75576f6a4a8c73
Reviewed-on: https://skia-review.googlesource.com/122580
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Jim Van Verth <jvanverth@google.com>
diff --git a/samplecode/SampleAndroidShadows.cpp b/samplecode/SampleAndroidShadows.cpp
index 5d4cd26..a5fb6fc 100644
--- a/samplecode/SampleAndroidShadows.cpp
+++ b/samplecode/SampleAndroidShadows.cpp
@@ -206,8 +206,8 @@
void onDrawContent(SkCanvas* canvas) override {
this->drawBG(canvas);
const SkScalar kLightWidth = 800;
- const SkScalar kAmbientAlpha = 0.1f;
- const SkScalar kSpotAlpha = 0.25f;
+ const SkScalar kAmbientAlpha = 0.039f;
+ const SkScalar kSpotAlpha = 0.19f;
SkPaint paint;
paint.setAntiAlias(true);