hwc2: Avoid drawcycles with non-empty dirty region

--Reject drawcycle if following conditions are met.
    1. No change in layerstack attributes.
    2. No new buffer latched.
    3. No refresh request triggered by HWC.
    4. This display is not source of vsync.

--Do not return Present failed error if display is inactive.
  SF wouldn't query for release fence upon errors.

CRs-Fixed: 2354696
Change-Id: I28174a09f4b5046d25c953f568f981fdb80b42a8

1 files changed, 2 insertions, 0 deletions

diff --git a/sdm/libs/hwc2/hwc_layers.cpp b/sdm/libs/hwc2/hwc_layers.cpp
index a41f24c1..d2456c48 100644
--- a/sdm/libs/hwc2/hwc_layers.cpp
+++ b/sdm/libs/hwc2/hwc_layers.cpp
@@ -302,6 +302,7 @@ HWC2::Error HWCLayer::SetLayerBuffer(buffer_handle_t buffer, int32_t acquire_fen
   layer_buffer->planes[0].offset = handle->offset;
   layer_buffer->planes[0].stride = UINT32(handle->width);
   layer_buffer->size = handle->size;
+  buffer_flipped_ = reinterpret_cast<uint64_t>(handle) != layer_buffer->buffer_id;
   layer_buffer->buffer_id = reinterpret_cast<uint64_t>(handle);
   layer_buffer->handle_id = handle->id;
 
@@ -371,6 +372,7 @@ HWC2::Error HWCLayer::SetLayerColor(hwc_color_t color) {
   if (layer_->solid_fill_color != GetUint32Color(color)) {
     layer_->solid_fill_color = GetUint32Color(color);
     surface_updated_ = true;
+    needs_validate_ = true;
   } else {
     surface_updated_ = false;
   }