From bc018c9513535eaef407c30da55e8a3aa857a5bb Mon Sep 17 00:00:00 2001
From: Swung0x48 <swung0x48@outlook.com>
Date: Wed, 18 Mar 2026 13:25:10 +0800
Subject: [PATCH] [Chore] (MG_Backend/DirectVulkan): add `indexBufferView`
 field for draw cmds

---
 MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp         | 8 ++++----
 .../MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp   | 2 +-
 .../MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h     | 6 +++++-
 3 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp b/MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp
index 0d7fedfc..c4cadc97 100644
--- a/MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp
+++ b/MobileGL/MG_Backend/DirectVulkan/DirectVulkan.cpp
@@ -67,8 +67,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
 
         DrawIndexedCmd payload{};
         payload.mode = mode;
-        payload.indexType = type;
-        payload.indexByteOffset = reinterpret_cast<SizeT>(indices);
+        payload.indexBufferView.indexType = type;
+        payload.indexBufferView.indexByteOffset = reinterpret_cast<SizeT>(indices);
         payload.indexCount = count;
         payload.instanceCount = 1;
 
@@ -107,8 +107,8 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         MOBILEGL_ASSERT(MG_State::pGLContext, "DirectVulkan::DrawElementsBaseVertex called with null GL context");
         DrawIndexedCmd payload{};
         payload.mode = mode;
-        payload.indexType = type;
-        payload.indexByteOffset = reinterpret_cast<SizeT>(indices);
+        payload.indexBufferView.indexType = type;
+        payload.indexBufferView.indexByteOffset = reinterpret_cast<SizeT>(indices);
         payload.indexCount = count;
         payload.instanceCount = 1;
         payload.firstIndex = 0;
diff --git a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
index f487b7fd..2650cde1 100644
--- a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
+++ b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.cpp
@@ -1269,7 +1269,7 @@ void main() {
         auto& frame = m_frameContext.GetCurrent();
 
         SetupDraw(frame, payload.mode, DrawSetupAspect::IndexBuffer,
-                       payload.indexType, payload.indexByteOffset, payload.indexCount);
+                       payload.indexBufferView.indexType, payload.indexBufferView.indexByteOffset, payload.indexCount);
 
         MOBILEGL_ASSERT(frame.isCommandRecording, "%s: frame recording was not started", __func__);
 
diff --git a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
index ae5a4bb5..f205a544 100644
--- a/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
+++ b/MobileGL/MG_Backend/DirectVulkan/Renderer/VulkanRenderer.h
@@ -54,9 +54,13 @@ namespace MobileGL::MG_Backend::DirectVulkan {
         Uint32 firstInstance = 0;
     };
 
-    struct DrawIndexedCmd: public DrawBaseCmd {
+    struct IndexBufferView {
         GLenum indexType = GL_UNSIGNED_SHORT;
         SizeT indexByteOffset = 0;
+    };
+
+    struct DrawIndexedCmd: public DrawBaseCmd {
+        IndexBufferView indexBufferView;
 
         Uint32 indexCount = 0;
         Uint32 instanceCount = 1;