Refactor HardwareLayer

 Defer all the things!
 Groundwork to allow hardware layers to work in a renderthread world

Change-Id: Ib3aa47525f393083621254a743dbaa6352f933bd

1 files changed, 124 insertions, 0 deletions

diff --git a/libs/hwui/DeferredLayerUpdater.h b/libs/hwui/DeferredLayerUpdater.h
new file mode 100644
index 000000000000..0350eef36e08
--- /dev/null
+++ b/libs/hwui/DeferredLayerUpdater.h
@@ -0,0 +1,124 @@
+/*
+ * Copyright (C) 2014 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.
+ */
+#ifndef DEFERREDLAYERUPDATE_H_
+#define DEFERREDLAYERUPDATE_H_
+
+#include <cutils/compiler.h>
+#include <gui/GLConsumer.h>
+#include <SkColorFilter.h>
+#include <SkMatrix.h>
+#include <utils/StrongPointer.h>
+
+#include "DisplayList.h"
+#include "Layer.h"
+#include "OpenGLRenderer.h"
+#include "Rect.h"
+
+namespace android {
+namespace uirenderer {
+
+// Container to hold the properties a layer should be set to at the start
+// of a render pass
+class DeferredLayerUpdater {
+public:
+    ANDROID_API DeferredLayerUpdater(Layer* layer, OpenGLRenderer* renderer = 0);
+    ANDROID_API ~DeferredLayerUpdater();
+
+    ANDROID_API bool setSize(uint32_t width, uint32_t height) {
+        if (mWidth != width || mHeight != height) {
+            mWidth = width;
+            mHeight = height;
+            return true;
+        }
+        return false;
+    }
+
+    ANDROID_API bool setBlend(bool blend) {
+        if (blend != mBlend) {
+            mBlend = blend;
+            return true;
+        }
+        return false;
+    }
+
+    ANDROID_API void setSurfaceTexture(const sp<GLConsumer>& texture, bool needsAttach) {
+        if (texture.get() != mSurfaceTexture.get()) {
+            mNeedsGLContextAttach = needsAttach;
+            mSurfaceTexture = texture;
+        }
+    }
+
+    ANDROID_API void updateTexImage() {
+        mUpdateTexImage = true;
+    }
+
+    ANDROID_API void setTransform(const SkMatrix* matrix) {
+        delete mTransform;
+        mTransform = matrix ? new SkMatrix(*matrix) : 0;
+    }
+
+    ANDROID_API void setDisplayList(DisplayList* displayList,
+                int left, int top, int right, int bottom);
+
+    ANDROID_API void setPaint(const SkPaint* paint) {
+        OpenGLRenderer::getAlphaAndModeDirect(paint, &mAlpha, &mMode);
+    }
+
+    ANDROID_API void setColorFilter(SkColorFilter* colorFilter);
+
+    ANDROID_API bool apply();
+    ANDROID_API void applyDeferred(DeferredLayerUpdater* deferredApply);
+
+    ANDROID_API Layer* backingLayer() {
+        return mLayer;
+    }
+
+    ANDROID_API Layer* detachBackingLayer() {
+        Layer* layer = mLayer;
+        mLayer = 0;
+        return layer;
+    }
+
+private:
+    // Generic properties
+    uint32_t mWidth;
+    uint32_t mHeight;
+    bool mBlend;
+    SkColorFilter* mColorFilter;
+    int mAlpha;
+    SkXfermode::Mode mMode;
+
+    // Layer type specific properties
+    // displayList and surfaceTexture are mutually exclusive, only 1 may be set
+    // dirtyRect is only valid if displayList is set
+    DisplayList* mDisplayList;
+    Rect mDirtyRect;
+    sp<GLConsumer> mSurfaceTexture;
+    SkMatrix* mTransform;
+    bool mNeedsGLContextAttach;
+    bool mUpdateTexImage;
+
+    Layer* mLayer;
+    OpenGLRenderer* mRenderer;
+    Caches& mCaches;
+
+    void doUpdateTexImage();
+};
+
+} /* namespace uirenderer */
+} /* namespace android */
+
+#endif /* DEFERREDLAYERUPDATE_H_ */