diff --git a/inc/hgl/graph/vulkan/VKRenderPass.h b/inc/hgl/graph/vulkan/VKRenderPass.h
index 9dc9e23f..e3d966da 100644
--- a/inc/hgl/graph/vulkan/VKRenderPass.h
+++ b/inc/hgl/graph/vulkan/VKRenderPass.h
@@ -42,6 +42,7 @@ public:
 
     operator VkRenderPass(){return render_pass;}
 
+    const uint              GetColorCount()const{return color_formats.GetCount();}
     const List<VkFormat> &  GetColorFormat()const{return color_formats;}
     const VkFormat          GetDepthFormat()const{return depth_format;}
 };//class RenderPass
diff --git a/src/RenderDevice/Vulkan/VKPipeline.cpp b/src/RenderDevice/Vulkan/VKPipeline.cpp
index d08270a8..a85a616a 100644
--- a/src/RenderDevice/Vulkan/VKPipeline.cpp
+++ b/src/RenderDevice/Vulkan/VKPipeline.cpp
@@ -145,7 +145,7 @@ PipelineCreater::PipelineCreater(Device *dev,const Material *material,RenderPass
     cba.srcAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
     cba.dstAlphaBlendFactor = VK_BLEND_FACTOR_ZERO;
 
-    colorBlendAttachments.Add(cba);
+    colorBlendAttachments.Add(cba,rp->GetColorCount());     //这个需要和subpass中的color attachment数量相等，所以添加多份
 
     alpha_blend=false;