[Tizen] Implement partial update

[platform/core/uifw/dali-core.git] / dali / internal / render / common / render-item.h

diff --git a/dali/internal/render/common/render-item.h b/dali/internal/render/common/render-item.h
old mode 100644 (file)
new mode 100755 (executable)
index 156272c..96a6130
--- a/dali/internal/render/common/render-item.h
+++ b/dali/internal/render/common/render-item.h
@@ -2,7 +2,7 @@
 #define DALI_INTERNAL_SCENE_GRAPH_RENDER_ITEM_H
 
 /*
- * Copyright (c) 2016 Samsung Electronics Co., Ltd.
+ * Copyright (c) 2017 Samsung Electronics Co., Ltd.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -33,7 +33,6 @@ namespace Internal
 namespace Render
 {
 class Renderer;
-class RenderGeometry;
 }
 
 namespace SceneGraph
@@ -56,6 +55,22 @@ struct RenderItem
   ~RenderItem();
 
   /**
+   * @brief This method is an optimized calculation of a viewport-space AABB (Axis-Aligned-Bounding-Box).
+   *
+   * We use the model-view-matrix, but we do not use projection. Therefore we assume Z = 0.
+   * As the box is Axis-Aligned (in viewport space) rotations on Z axis are correctly delt with by expanding the box as necessary.
+   * Rotations on X & Y axis will resize the AABB, but it will not handle the projection error due to the new coordinates having non-zero Z values.
+   *
+   * Note: We pass in the viewport dimensions rather than allow the caller to modify the raw AABB in order to optimally generate the final result.
+   *
+   * @param[in]    viewportWidth     The width of the viewport to calculate for
+   * @param[in]    viewportHeight    The height of the viewport to calculate for
+   * @param[in]    useUpdateSizeHint Set to true if you want to use update size hint instead of item size
+   * @return                         The AABB coordinates in viewport-space (x, y, width, height)
+   */
+  ClippingBox CalculateViewportSpaceAABB( const int viewportWidth, const int viewportHeight, const bool useUpdateSizeHint = false ) const;
+
+  /**
    * Overriden delete operator.
    * Deletes the RenderItem from its global memory pool
    * @param[in] A pointer to the RenderItem to delete.
@@ -65,15 +80,13 @@ struct RenderItem
   Matrix            mModelMatrix;
   Matrix            mModelViewMatrix;
   Vector3           mSize;
+  Vector3           mUpdateSizeHint;
   Render::Renderer* mRenderer;
   Node*             mNode;
-  const void*       mTextureSet;        //< Used only for sorting
-
-  mutable Render::Geometry* mBatchRenderGeometry;
-
+  const void*       mTextureSet;        //< Used for sorting only
   int               mDepthIndex;
   bool              mIsOpaque:1;
-  bool              mBatched:1;
+  bool              mPartialUpdateEnabled:1;
 
 private: