[Tizen] Implement partial update

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

diff --git a/dali/internal/render/common/render-item.cpp b/dali/internal/render/common/render-item.cpp
old mode 100644 (file)
new mode 100755 (executable)
index d47f808..e562036
--- a/dali/internal/render/common/render-item.cpp
+++ b/dali/internal/render/common/render-item.cpp
@@ -46,11 +46,13 @@ RenderItem::RenderItem()
 : mModelMatrix( false ),
   mModelViewMatrix( false ),
   mSize(),
+  mUpdateSizeHint(),
   mRenderer( NULL ),
   mNode( NULL ),
   mTextureSet( NULL ),
   mDepthIndex( 0 ),
-  mIsOpaque( true )
+  mIsOpaque( true ),
+  mPartialUpdateEnabled( false )
 {
 }
 
@@ -59,11 +61,22 @@ RenderItem::~RenderItem()
 }
 
 
-ClippingBox RenderItem::CalculateViewportSpaceAABB( const int viewportWidth, const int viewportHeight ) const
+ClippingBox RenderItem::CalculateViewportSpaceAABB( const int viewportWidth, const int viewportHeight, const bool useUpdateSizeHint ) const
 {
   // Calculate extent vector of the AABB:
-  const float halfActorX = mSize.x * 0.5f;
-  const float halfActorY = mSize.y * 0.5f;
+  float halfActorX;
+  float halfActorY;
+  if( useUpdateSizeHint )
+  {
+    halfActorX = mUpdateSizeHint.x * 0.5f;
+    halfActorY = mUpdateSizeHint.y * 0.5f;
+  }
+  else
+  {
+    halfActorX = mSize.x * 0.5f;
+    halfActorY = mSize.y * 0.5f;
+  }
+
 
   // To transform the actor bounds to screen-space, We do a fast, 2D version of a matrix multiply optimized for 2D quads.
   // This reduces float multiplications from 64 (16 * 4) to 12 (4 * 3).