From 56f45499e140a44279cfdbceb98831619ec62a4d Mon Sep 17 00:00:00 2001
From: BZLZHH <admin@bzlzhh.top>
Date: Sun, 7 Dec 2025 11:07:58 +0800
Subject: [PATCH] [Feat] (MG_Backend/DirectGLES): Set divisor for VAO attrib.

---
 MobileGL/MG_Backend/DirectGLES/DirectGLES.cpp | 6 +++---
 MobileGL/MG_Backend/DirectGLES/Managers.cpp   | 7 +++++--
 MobileGL/MG_Backend/DirectGLES/Managers.h     | 2 +-
 3 files changed, 9 insertions(+), 6 deletions(-)

diff --git a/MobileGL/MG_Backend/DirectGLES/DirectGLES.cpp b/MobileGL/MG_Backend/DirectGLES/DirectGLES.cpp
index 2834ed52..e36da553 100644
--- a/MobileGL/MG_Backend/DirectGLES/DirectGLES.cpp
+++ b/MobileGL/MG_Backend/DirectGLES/DirectGLES.cpp
@@ -137,7 +137,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
     } // namespace BufferImpl
 
     namespace VertexArrayImpl {
-        void SyncCurrentVAO() {
+        void SyncCurrentVAO(Bool needDivisor) {
             auto currentVAOObject = MG_State::pGLContext->GetBoundVertexArray();
             if (!currentVAOObject) {
                 MGLOG_E("No VAO is currently bound, cannot sync current VAO.");
@@ -152,7 +152,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
             } else {
                 backendVAOObject = backendVAOIt->second;
             }
-            backendVAOObject->SyncToBackend(currentVAOObject);
+            backendVAOObject->SyncToBackend(currentVAOObject, needDivisor);
         }
     } // namespace VertexArrayImpl
 
@@ -356,7 +356,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
 
     void PrepareForDraw(DrawSyncBit syncBit) {
         BufferImpl::SyncNeccessaryBuffers(syncBit & DrawSyncBit::IndexBuffer, syncBit & DrawSyncBit::IndirectBuffer);
-        VertexArrayImpl::SyncCurrentVAO(); // TODO: instancing
+        VertexArrayImpl::SyncCurrentVAO(syncBit & DrawSyncBit::Instancing);
         TextureImpl::SyncNeccessaryTextures();
         FramebufferImpl::SyncCurrentFBO();
         PrgramImpl::SyncCurrentProgram();
diff --git a/MobileGL/MG_Backend/DirectGLES/Managers.cpp b/MobileGL/MG_Backend/DirectGLES/Managers.cpp
index 21dff9a0..dc75d9c3 100644
--- a/MobileGL/MG_Backend/DirectGLES/Managers.cpp
+++ b/MobileGL/MG_Backend/DirectGLES/Managers.cpp
@@ -156,7 +156,8 @@ namespace MobileGL::MG_Backend::DirectGLES {
             MG_External::GLES::glBindVertexArray(m_backendVAOId);
         }
 
-        void BackendVertexArrayObject::SyncToBackend(SharedPtr<MG_State::GLState::VertexArrayObject>& stateVAOObject) {
+        void BackendVertexArrayObject::SyncToBackend(SharedPtr<MG_State::GLState::VertexArrayObject>& stateVAOObject,
+                                                     Bool needDivisor) {
             if (!stateVAOObject) {
                 MGLOG_E("State VAO object is null, cannot sync to backend.");
                 return;
@@ -205,7 +206,9 @@ namespace MobileGL::MG_Backend::DirectGLES {
                                                               attrib.Stride, (const void*)attrib.Offset);
                 }
 
-                // TODO: divisor
+                if (needDivisor) {
+                    MG_External::GLES::glVertexAttribDivisor(attribIndex, attrib.Divisor);
+                }
             }
 
             const auto& indexBufferBinding = stateVAOObject->GetIndexBufferBindingSlot().GetBoundObject();
diff --git a/MobileGL/MG_Backend/DirectGLES/Managers.h b/MobileGL/MG_Backend/DirectGLES/Managers.h
index d3a6497d..86209aa8 100644
--- a/MobileGL/MG_Backend/DirectGLES/Managers.h
+++ b/MobileGL/MG_Backend/DirectGLES/Managers.h
@@ -34,7 +34,7 @@ namespace MobileGL::MG_Backend::DirectGLES {
         class BackendVertexArrayObject {
         public:
             BackendVertexArrayObject();
-            void SyncToBackend(SharedPtr<MG_State::GLState::VertexArrayObject>& stateVAOObject);
+            void SyncToBackend(SharedPtr<MG_State::GLState::VertexArrayObject>& stateVAOObject, Bool needDivisor);
             Uint GetBackendVertexArrayId() { return m_backendVAOId; }
             void Bind();