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.cpp b/libs/hwui/canvas/CanvasOpRasterizer.cpp
new file mode 100644
index 0000000..97c418a
--- /dev/null
+++ b/libs/hwui/canvas/CanvasOpRasterizer.cpp
@@ -0,0 +1,50 @@
+/*
+ * 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 "CanvasOpRasterizer.h"
+
+#include <SkCanvas.h>
+#include <log/log.h>
+
+#include <vector>
+
+#include "CanvasOpBuffer.h"
+#include "CanvasOps.h"
+
+namespace android::uirenderer {
+
+void rasterizeCanvasBuffer(const CanvasOpBuffer& source, SkCanvas* destination) {
+ // Tracks the global transform from the current display list back toward the display space
+ // Push on beginning a RenderNode draw, pop on ending one
+ std::vector<SkMatrix> globalMatrixStack;
+ SkMatrix& currentGlobalTransform = globalMatrixStack.emplace_back(SkMatrix::I());
+
+ source.for_each([&]<CanvasOpType T>(CanvasOpContainer<T> * op) {
+ if constexpr (T == CanvasOpType::BeginZ || T == CanvasOpType::EndZ) {
+ // Do beginZ or endZ
+ LOG_ALWAYS_FATAL("TODO");
+ return;
+ } else {
+ // Generic OP
+ // First apply the current transformation
+ destination->setMatrix(SkMatrix::Concat(currentGlobalTransform, op->transform()));
+ // Now draw it
+ (*op)->draw(destination);
+ }
+ });
+}
+
+} // namespace android::uirenderer