DL-next groundwork
Initial groundwork / tests for the op-forward displaylist
Test: hwuiunit --gtest_filter=CanvasOpBuffer.*
Change-Id: I6a09d9841c964a67fde8203b979de3fd3fbd2026
diff --git a/libs/hwui/canvas/CanvasOpRasterizer.h b/libs/hwui/canvas/CanvasOpRasterizer.h
new file mode 100644
index 0000000..c2235ab
--- /dev/null
+++ b/libs/hwui/canvas/CanvasOpRasterizer.h
@@ -0,0 +1,64 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <hwui/Bitmap.h>
+
+#include <SkBitmap.h>
+#include <SkCanvas.h>
+
+#include "CanvasOps.h"
+
+#include <experimental/type_traits>
+#include <variant>
+
+namespace android::uirenderer {
+
+class CanvasOpBuffer;
+
+void rasterizeCanvasBuffer(const CanvasOpBuffer& source, SkCanvas* destination);
+
+class ImmediateModeRasterizer {
+public:
+ explicit ImmediateModeRasterizer(std::unique_ptr<SkCanvas>&& canvas) {
+ mCanvas = canvas.get();
+ mOwnership = std::move(canvas);
+ }
+
+ explicit ImmediateModeRasterizer(std::shared_ptr<SkCanvas> canvas) {
+ mCanvas = canvas.get();
+ mOwnership = std::move(canvas);
+ }
+
+ explicit ImmediateModeRasterizer(Bitmap& bitmap) {
+ mCanvas = &(mOwnership.emplace<SkCanvas>(bitmap.getSkBitmap()));
+ }
+
+ template <CanvasOpType T>
+ void draw(const CanvasOp<T>& op) {
+ if constexpr (CanvasOpTraits::can_draw<CanvasOp<T>>) {
+ op.draw(mCanvas);
+ }
+ }
+
+private:
+ SkCanvas* mCanvas;
+ // Just here to keep mCanvas alive. Thankfully we never need to actually look inside this...
+ std::variant<SkCanvas, std::shared_ptr<SkCanvas>, std::unique_ptr<SkCanvas>> mOwnership;
+};
+
+} // namespace android::uirenderer