From 4ef1283fce2ae92d658929d126da4f19cdfb2641 Mon Sep 17 00:00:00 2001
From: "HuYingzhuo(hugo/hyzboy)" <hyzboy@outlook.com>
Date: Thu, 11 May 2023 21:07:26 +0800
Subject: [PATCH] added uint8 IndexType

---
 inc/hgl/graph/VK.h                       | 5 +++--
 inc/hgl/graph/VKIndexBuffer.h            | 4 ++--
 src/SceneGraph/Vulkan/VKDeviceBuffer.cpp | 1 +
 3 files changed, 6 insertions(+), 4 deletions(-)

diff --git a/inc/hgl/graph/VK.h b/inc/hgl/graph/VK.h
index 16880ae9..488c649f 100644
--- a/inc/hgl/graph/VK.h
+++ b/inc/hgl/graph/VK.h
@@ -136,10 +136,11 @@ inline const uint32_t GetMipLevel(const VkExtent3D &ext)
 /**
  * 索引类型,等同于VkIndexType
  */
-enum IndexType
+enum IndexType:uint
 {
     U16=0,
-    U32
+    U32,
+    U8=VK_INDEX_TYPE_UINT8_EXT,
 };
 
 /**
diff --git a/inc/hgl/graph/VKIndexBuffer.h b/inc/hgl/graph/VKIndexBuffer.h
index 757ad6d1..ff29484b 100644
--- a/inc/hgl/graph/VKIndexBuffer.h
+++ b/inc/hgl/graph/VKIndexBuffer.h
@@ -26,8 +26,8 @@ namespace hgl
 
             ~IndexBuffer()=default;
 
-            const IndexType GetType ()const{return index_type;}
-            const uint32    GetCount()const{return count;}
+            const IndexType     GetType ()const{return index_type;}
+            const uint32        GetCount()const{return count;}
         };//class IndexBuffer:public DeviceBuffer
     }//namespace graph
 }//namespace hgl
diff --git a/src/SceneGraph/Vulkan/VKDeviceBuffer.cpp b/src/SceneGraph/Vulkan/VKDeviceBuffer.cpp
index 95968186..55a2720d 100644
--- a/src/SceneGraph/Vulkan/VKDeviceBuffer.cpp
+++ b/src/SceneGraph/Vulkan/VKDeviceBuffer.cpp
@@ -76,6 +76,7 @@ IndexBuffer *GPUDevice::CreateIBO(IndexType index_type,uint32_t count,const void
 {
     uint32_t stride;
 
+    if(index_type==IndexType::U8 )stride=1;else
     if(index_type==IndexType::U16)stride=2;else
     if(index_type==IndexType::U32)stride=4;else
         return(nullptr);