SurfaceComposerClient: Clean up layer state

- align layer alpha/color with SF layer drawing state
- remove unused flags and fields

Bug: 238781169
Test: presubmit

Change-Id: I4be9c56b3006b7d7a0ca19160511ebb9e3551a8c
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp
index 410e438..9bb9305 100644
--- a/services/surfaceflinger/Layer.cpp
+++ b/services/surfaceflinger/Layer.cpp
@@ -3633,7 +3633,7 @@
     }
 
     if (s.what & layer_state_t::eAlphaChanged) {
-        if (mDrawingState.color.a != s.alpha) {
+        if (mDrawingState.color.a != s.color.a) {
             ALOGV("%s: false [eAlphaChanged changed]", __func__);
             return false;
         }
@@ -3677,9 +3677,9 @@
         }
     }
 
-    if (s.what & layer_state_t::eTransformChanged) {
-        if (mDrawingState.bufferTransform != s.transform) {
-            ALOGV("%s: false [eTransformChanged changed]", __func__);
+    if (s.what & layer_state_t::eBufferTransformChanged) {
+        if (mDrawingState.bufferTransform != s.bufferTransform) {
+            ALOGV("%s: false [eBufferTransformChanged changed]", __func__);
             return false;
         }
     }
@@ -4177,15 +4177,12 @@
 }
 
 bool Layer::setColor(const half3& color) {
-    if (mDrawingState.color.r == color.r && mDrawingState.color.g == color.g &&
-        mDrawingState.color.b == color.b) {
+    if (mDrawingState.color.rgb == color) {
         return false;
     }
 
     mDrawingState.sequence++;
-    mDrawingState.color.r = color.r;
-    mDrawingState.color.g = color.g;
-    mDrawingState.color.b = color.b;
+    mDrawingState.color.rgb = color;
     mDrawingState.modified = true;
     setTransactionFlags(eTransactionNeeded);
     return true;
diff --git a/services/surfaceflinger/SurfaceFlinger.cpp b/services/surfaceflinger/SurfaceFlinger.cpp
index 5466497..3b00ca8 100644
--- a/services/surfaceflinger/SurfaceFlinger.cpp
+++ b/services/surfaceflinger/SurfaceFlinger.cpp
@@ -4152,12 +4152,10 @@
         }
     }
     if (what & layer_state_t::eAlphaChanged) {
-        if (layer->setAlpha(s.alpha))
-            flags |= eTraversalNeeded;
+        if (layer->setAlpha(s.color.a)) flags |= eTraversalNeeded;
     }
     if (what & layer_state_t::eColorChanged) {
-        if (layer->setColor(s.color))
-            flags |= eTraversalNeeded;
+        if (layer->setColor(s.color.rgb)) flags |= eTraversalNeeded;
     }
     if (what & layer_state_t::eColorTransformChanged) {
         if (layer->setColorTransform(s.colorTransform)) {
@@ -4165,7 +4163,7 @@
         }
     }
     if (what & layer_state_t::eBackgroundColorChanged) {
-        if (layer->setBackgroundColor(s.color, s.bgColorAlpha, s.bgColorDataspace)) {
+        if (layer->setBackgroundColor(s.color.rgb, s.bgColorAlpha, s.bgColorDataspace)) {
             flags |= eTraversalNeeded;
         }
     }
@@ -4214,8 +4212,8 @@
             flags |= eTransactionNeeded | eTraversalNeeded | eTransformHintUpdateNeeded;
         }
     }
-    if (what & layer_state_t::eTransformChanged) {
-        if (layer->setTransform(s.transform)) flags |= eTraversalNeeded;
+    if (what & layer_state_t::eBufferTransformChanged) {
+        if (layer->setTransform(s.bufferTransform)) flags |= eTraversalNeeded;
     }
     if (what & layer_state_t::eTransformToDisplayInverseChanged) {
         if (layer->setTransformToDisplayInverse(s.transformToDisplayInverse))
diff --git a/services/surfaceflinger/Tracing/TransactionProtoParser.cpp b/services/surfaceflinger/Tracing/TransactionProtoParser.cpp
index 267f3d0..3418c82 100644
--- a/services/surfaceflinger/Tracing/TransactionProtoParser.cpp
+++ b/services/surfaceflinger/Tracing/TransactionProtoParser.cpp
@@ -111,7 +111,7 @@
     }
 
     if (layer.what & layer_state_t::eAlphaChanged) {
-        proto.set_alpha(layer.alpha);
+        proto.set_alpha(layer.color.a);
     }
 
     if (layer.what & layer_state_t::eColorChanged) {
@@ -123,8 +123,8 @@
     if (layer.what & layer_state_t::eTransparentRegionChanged) {
         LayerProtoHelper::writeToProto(layer.transparentRegion, proto.mutable_transparent_region());
     }
-    if (layer.what & layer_state_t::eTransformChanged) {
-        proto.set_transform(layer.transform);
+    if (layer.what & layer_state_t::eBufferTransformChanged) {
+        proto.set_transform(layer.bufferTransform);
     }
     if (layer.what & layer_state_t::eTransformToDisplayInverseChanged) {
         proto.set_transform_to_display_inverse(layer.transformToDisplayInverse);
@@ -395,7 +395,7 @@
     }
 
     if (proto.what() & layer_state_t::eAlphaChanged) {
-        layer.alpha = proto.alpha();
+        layer.color.a = proto.alpha();
     }
 
     if (proto.what() & layer_state_t::eColorChanged) {
@@ -407,8 +407,8 @@
     if (proto.what() & layer_state_t::eTransparentRegionChanged) {
         LayerProtoHelper::readFromProto(proto.transparent_region(), layer.transparentRegion);
     }
-    if (proto.what() & layer_state_t::eTransformChanged) {
-        layer.transform = proto.transform();
+    if (proto.what() & layer_state_t::eBufferTransformChanged) {
+        layer.bufferTransform = proto.transform();
     }
     if (proto.what() & layer_state_t::eTransformToDisplayInverseChanged) {
         layer.transformToDisplayInverse = proto.transform_to_display_inverse();
diff --git a/services/surfaceflinger/layerproto/transactions.proto b/services/surfaceflinger/layerproto/transactions.proto
index b687abc..4c6a9cf 100644
--- a/services/surfaceflinger/layerproto/transactions.proto
+++ b/services/surfaceflinger/layerproto/transactions.proto
@@ -98,8 +98,7 @@
         eReparent = 0x00008000;
 
         eColorChanged = 0x00010000;
-        eDestroySurface = 0x00020000;
-        eTransformChanged = 0x00040000;
+        eBufferTransformChanged = 0x00040000;
         eTransformToDisplayInverseChanged = 0x00080000;
 
         eCropChanged = 0x00100000;