What are shadows? Is it expensive to render a shadow? How bad is it? Does this have anything to do with the rendering engine? How does rendering engine work? Lets find out!
in order from parent to child Render Phase Draw layers in order from parent to child Display Identify the layers that need laying out Receive Events 12
in order from parent to child Render Phase Draw layers in order from parent to child Display Identify the layers that need laying out Receive Events 13
screen bu ff er 2. Fill the image with shadow colour 3. Apply shadow blur and o ff set 4. Copy shadow to original bu ff er Original Bu ff er O ff screen Bu ff er 19
screen bu ff er 2. Fill the image with shadow colour 3. Apply shadow blur and o ff set 4. Copy shadow to original bu ff er Original Bu ff er O ff screen Bu ff er 20
screen bu ff er 2. Fill the image with shadow colour 3. Apply shadow blur and o ff set 4. Copy shadow to original bu ff er Original Bu ff er O ff screen Bu ff er 21
screen bu ff er 2. Fill the image with shadow colour 3. Apply shadow blur and o ff set 4. Copy shadow to original bu ff er Original Bu ff er O ff screen Bu ff er 22