drm_hwcomposer: Add rcar-du display backend
ABGR8888 pixel format and layer scaling are unsupported for rcar-du
platform.
Handle and filter out the layers by overriding the IsClientLayer method
for additional checks. That will force layers that require scaling or have
the unsupported pixel format to be merged by GPU, and allow other layers
to be merged by DRM.
Signed-off-by: Matvii Zorin <matvii.zorin@globallogic.com>
diff --git a/backend/backendrcardu.cpp b/backend/backendrcardu.cpp
new file mode 100644
index 0000000..d6fe7bf
--- /dev/null
+++ b/backend/backendrcardu.cpp
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "backendrcardu.h"
+#include "backendmanager.h"
+#include "drm_fourcc.h"
+
+namespace android {
+
+bool BackendRCarDu::IsClientLayer(DrmHwcTwo::HwcDisplay *display,
+ DrmHwcTwo::HwcLayer *layer) {
+ hwc_drm_bo_t bo;
+
+ int ret = display->importer()->ConvertBoInfo(layer->buffer(), &bo);
+ if (ret)
+ return true;
+
+ if (bo.format == DRM_FORMAT_ABGR8888)
+ return true;
+
+ if (layer->RequireScalingOrPhasing())
+ return true;
+
+ return Backend::IsClientLayer(display, layer);
+}
+
+REGISTER_BACKEND("rcar-du", BackendRCarDu);
+
+} // namespace android
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