1 files changed, 17 insertions, 1 deletions
diff --git a/Runtime/Graphics/VertexAttribute.h b/Runtime/Graphics/VertexAttribute.h
index 2e6e59f..4e50a1a 100644
--- a/Runtime/Graphics/VertexAttribute.h
+++ b/Runtime/Graphics/VertexAttribute.h
@@ -21,10 +21,26 @@ enum VertexAttrFormat
 
 struct VertexAttributeDescriptor
 {
-	const void* pointer;  // 内存地址或显存中相对VBO的偏移值
+	// for default vertex layout
+	VertexAttributeDescriptor() {}
+	// for custom vertex layout
+	VertexAttributeDescriptor(int startOff, uint num, uint fmt, uint16 strd, bool normalized = false)
+	{
+		startOffset = startOff;
+		componentNum = num;
+		componentFormat = fmt;
+		stride = strd;
+		normalize = normalized;
+	}
+
+	union {
+		const void* pointer;  // 内存地址或显存中相对VBO的偏移值
+		int startOffset;
+	};
 	uint componentNum;    // 向量维度1,2,3,4
 	uint componentFormat; // 每个分量的类型
 	uint16 stride;        // 间隔
+	bool normalize;       // 是否归一化，只用于CustomVertexLayout
 };
 
 namespace VertexAttribute