<html><head></head><body><div style="color:#000; background-color:#fff; font-family:Courier New, courier, monaco, monospace, sans-serif;font-size:16px"><pre class="" id="yui_3_16_0_1_1452505253007_14429">Dear QE-GPU developers,<br>what is the difference between layer and surface.<br>think you.<br></pre></div></body></html>