[Feat] (MG_State/VertexArrayState): Implement divisor.

MobileGL/MG_State/GLState/VertexArrayState/VertexArrayObject.cpp

@@ -94,6 +94,18 @@ namespace MobileGL {
             Uint VertexArrayObject::GetExternalIndex() const {
                 return m_externalIndex;
             }
+
+            void VertexArrayObject::SetAttributeDivisor(Uint index, Uint divisor) {
+                if (index >= MAX_VERTEX_ATTRIBS) return;
+                if (m_attributes[index].Divisor == divisor) return;
+                m_attributes[index].Divisor = divisor;
+                MarkAttributeDirty(index);
+            }
+
+            Uint VertexArrayObject::GetAttributeDivisor(Uint index) const {
+                if (index >= MAX_VERTEX_ATTRIBS) return 0;
+                return m_attributes[index].Divisor;
+            }
         } // namespace GLState
     } // namespace MG_State
 } // namespace MobileGL

MobileGL/MG_State/GLState/VertexArrayState/VertexArrayObject.h

@@ -13,6 +13,7 @@ namespace MobileGL {
                 int Stride = 0;
                 SizeT Offset = 0;
                 Bool IsInteger = false;
+                Uint Divisor = 0;
                 SharedPtr<BufferObject> Buffer;
             };
 
@@ -40,6 +41,9 @@ namespace MobileGL {
                 void ClearDirtyAttributes();
                 Uint GetExternalIndex() const;
 
+                void SetAttributeDivisor(Uint index, Uint divisor);
+                Uint GetAttributeDivisor(Uint index) const;
+
             private:
                 void MarkAttributeDirty(Uint index);