diff --git a/Projects/Skylicht/Engine/Source/RenderPipeline/CPostProcessorRP.cpp b/Projects/Skylicht/Engine/Source/RenderPipeline/CPostProcessorRP.cpp
index 3009aa90b..e6762a81d 100644
--- a/Projects/Skylicht/Engine/Source/RenderPipeline/CPostProcessorRP.cpp
+++ b/Projects/Skylicht/Engine/Source/RenderPipeline/CPostProcessorRP.cpp
@@ -102,7 +102,7 @@ namespace Skylicht
 				{
 					s = s / 2;
 					m_rtt[m_numTarget++] = driver->addRenderTargetTexture(s, "rtt", ECF_A16B16G16R16F);
-				} while (s.Height > 50);
+				} while (s.Height > 50 && m_numTarget < 8);
 			}
 		}