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

libhwcomposer/hwc_copybit.cpp

@@ -177,7 +177,7 @@ bool CopyBit::prepare(hwc_context_t *ctx, hwc_display_contents_1_t *list,
                 return true;
             hwc_rect_t sourceCrop = integerizeSourceCrop(layer->sourceCropf);
 
-            if (layer->transform & HAL_TRANSFORM_ROT_90) {
+            if (has90Transform(layer)) {
                 src_h = sourceCrop.right - sourceCrop.left;
                 src_w = sourceCrop.bottom - sourceCrop.top;
             } else {

libhwcomposer/hwc_mdpcomp.cpp

@@ -603,9 +603,10 @@ bool MDPComp::tryFullFrame(hwc_context_t *ctx,
 
         //For 8x26 with panel width>1k, if RGB layer needs HFLIP fail mdp comp
         // may not need it if Gfx pre-rotation can handle all flips & rotations
+        int transform = (layer->flags & HWC_COLOR_FILL) ? 0 : layer->transform;
         if(qdutils::MDPVersion::getInstance().is8x26() &&
                                 (ctx->dpyAttr[mDpy].xres > 1024) &&
-                                (layer->transform & HWC_TRANSFORM_FLIP_H) &&
+                                (transform & HWC_TRANSFORM_FLIP_H) &&
                                 (!isYuvBuffer(hnd)))
                    return false;
     }

libhwcomposer/hwc_utils.cpp

@@ -751,8 +751,10 @@ static void trimList(hwc_context_t *ctx, hwc_display_contents_1_t *list,
     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 @@ void optimizeLayerRects(const hwc_display_contents_1_t *list) {
                   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)) {