drm_hwcomposer: Use float type to store alpha internally
0.0-1.0F range is a natural way to store alpha value internally,
to be converted later to DRM-specific 0-0xFFFF fixed point type at
DRM layer.
Change-Id: Iedf2b11e53bf38efd08cd4eda1346647b9ff721f
Signed-off-by: Roman Stratiienko <r.stratiienko@gmail.com>
diff --git a/hwc2_device/HwcLayer.cpp b/hwc2_device/HwcLayer.cpp
index 1d1e118..6940c12 100644
--- a/hwc2_device/HwcLayer.cpp
+++ b/hwc2_device/HwcLayer.cpp
@@ -46,8 +46,7 @@
layer_data_.pi.display_frame = layer_properties.display_frame.value();
}
if (layer_properties.alpha) {
- layer_data_.pi.alpha = std::lround(layer_properties.alpha.value() *
- UINT16_MAX);
+ layer_data_.pi.alpha = layer_properties.alpha.value();
}
if (layer_properties.source_crop) {
layer_data_.pi.source_crop = layer_properties.source_crop.value();