hwc: Color layer always has zero transform.

Color layer always has zero transform because framework uses the
transform member of hwc layer to pass the color value to HAL.

Change-Id: I79fe204c558d1b6e1dd69ba635ba0bd87140b1b1
diff --git a/libhwcomposer/hwc_utils.cpp b/libhwcomposer/hwc_utils.cpp
index 5c36304..8a42b38 100644
--- a/libhwcomposer/hwc_utils.cpp
+++ b/libhwcomposer/hwc_utils.cpp
@@ -751,8 +751,10 @@
     for(uint32_t i = 0; i < list->numHwLayers - 1; i++) {
         hwc_layer_1_t *layer = &list->hwLayers[i];
         hwc_rect_t crop = integerizeSourceCrop(layer->sourceCropf);
+        int transform = (list->hwLayers[i].flags & HWC_COLOR_FILL) ? 0 :
+                list->hwLayers[i].transform;
         trimLayer(ctx, dpy,
-                list->hwLayers[i].transform,
+                transform,
                 (hwc_rect_t&)crop,
                 (hwc_rect_t&)list->hwLayers[i].displayFrame);
         layer->sourceCropf.left = crop.left;
@@ -1145,7 +1147,8 @@
                   hwc_rect_t& bottomframe = layer->displayFrame;
                   hwc_rect_t bottomCrop =
                       integerizeSourceCrop(layer->sourceCropf);
-                  int transform =layer->transform;
+                  int transform = (layer->flags & HWC_COLOR_FILL) ? 0 :
+                      layer->transform;
 
                   hwc_rect_t irect = getIntersection(bottomframe, topframe);
                   if(isValidRect(irect)) {