From 11ebb841beeb6c080d4a1611d14dc72fa8502475 Mon Sep 17 00:00:00 2001
From: hyzboy <hyzboy@gmail.com>
Date: Sat, 27 Apr 2024 01:13:12 +0800
Subject: [PATCH] improved IBAccess in
 VKPrimitive/VKRenderable/MaterialRenderList

---
 inc/hgl/graph/VKPrimitive.h            | 2 +-
 src/SceneGraph/MaterialRenderList.cpp  | 6 ++----
 src/SceneGraph/Vulkan/VKRenderable.cpp | 5 ++++-
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/inc/hgl/graph/VKPrimitive.h b/inc/hgl/graph/VKPrimitive.h
index 0df5ecd0..16c35ce6 100644
--- a/inc/hgl/graph/VKPrimitive.h
+++ b/inc/hgl/graph/VKPrimitive.h
@@ -53,7 +53,7 @@ public:
             bool                GetVABAccess        (const AnsiString &,VABAccess *);
     const   int                 GetBufferCount      ()const {return buffer_list.GetCount();}
 
-    const   IBAccess *          GetIBAccess         ()const {return &ib_access;}
+    const   IBAccess *          GetIBAccess         ()const {return ib_access.buffer?&ib_access:nullptr;}
 };//class Primitive
 VK_NAMESPACE_END
 #endif//HGL_GRAPH_VULKAN_PRIMITIVE_INCLUDE
diff --git a/src/SceneGraph/MaterialRenderList.cpp b/src/SceneGraph/MaterialRenderList.cpp
index e8973d2b..3642460b 100644
--- a/src/SceneGraph/MaterialRenderList.cpp
+++ b/src/SceneGraph/MaterialRenderList.cpp
@@ -256,11 +256,9 @@ void MaterialRenderList::Render(RenderItem *ri)
         last_vid=ri->vid;
     }
 
-    const IBAccess *iba=last_vid->ib_access;
-
-    if(iba->buffer)
+    if(last_vid->ib_access)
     {
-        cmd_buf->DrawIndexed(iba,ri->count);
+        cmd_buf->DrawIndexed(last_vid->ib_access,ri->count);
     }
     else
     {
diff --git a/src/SceneGraph/Vulkan/VKRenderable.cpp b/src/SceneGraph/Vulkan/VKRenderable.cpp
index c92c47ec..5bd646af 100644
--- a/src/SceneGraph/Vulkan/VKRenderable.cpp
+++ b/src/SceneGraph/Vulkan/VKRenderable.cpp
@@ -15,7 +15,10 @@ VertexInputData::VertexInputData(const uint32_t c,const uint32_t vc,const IBAcce
 
     vertex_count=vc;
 
-    ib_access=iba;
+    if(!iba||!iba->buffer)
+        ib_access=nullptr;
+    else
+        ib_access=iba;
 }
 
 VertexInputData::~VertexInputData()