diff --git a/Assets/Scripts/Data/QModel.cs b/Assets/Scripts/Data/QModel.cs
index c331f9d..7524efa 100644
--- a/Assets/Scripts/Data/QModel.cs
+++ b/Assets/Scripts/Data/QModel.cs
@@ -172,3 +172,23 @@ public struct QTriVertex
     [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)] public byte[] v;
     public byte lightNormalIndex;
 }
+
+/// <summary>
+/// Managed equivalent of mtriangle_t
+/// </summary>
+[StructLayout(LayoutKind.Sequential, Pack = 0)]
+public struct QTriangle
+{
+    public int facesFront;
+    [MarshalAs(UnmanagedType.ByValArray, SizeConst = 3)] public int[] vertIndex;
+}
+
+/// <summary>
+/// Managed equivalent of stvert_t
+/// </summary>
+[StructLayout(LayoutKind.Sequential, Pack = 0)]
+public struct QSTVert
+{
+    public int onSeam;
+    public int s, t;
+}
diff --git a/Assets/Scripts/Modules/RenderModule.cs b/Assets/Scripts/Modules/RenderModule.cs
index b3cb490..9726902 100644
--- a/Assets/Scripts/Modules/RenderModule.cs
+++ b/Assets/Scripts/Modules/RenderModule.cs
@@ -7,6 +7,8 @@ using UnityEngine;
 
 public class RenderModule : CallbackHandler<RenderModule>
 {
+    private const int MaxAliasFrames = 256; // Should match MAXALIASFRAMES
+    
     private readonly UniQuake uq;
 
     public RenderModule(UniQuake uniQuake)
@@ -17,42 +19,54 @@ public class RenderModule : CallbackHandler<RenderModule>
         {
             target = SelfPtr,
 
-            ModUploadModel = CreateCallback<ModUploadModelCallback>(Callback_ModUploadModel),
+            UploadAliasModel = CreateCallback<UploadAliasModelCallback>(Callback_UploadAliasModel),
         };
 
         RegisterCallbacks(callbacks);
     }
 
     /// <summary>
-    /// This matches struct unity_syscalls_s from uniquake.h in native code.
+    /// This matches unity_modcalls_t from mod_uniquake.c in native code.
     /// </summary>
     [StructLayout(LayoutKind.Sequential, Pack = 0)]
     private class Callbacks
     {
         public IntPtr target;
 
-        public IntPtr ModUploadModel;
+        public IntPtr UploadAliasModel;
     }
 
-    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
-    private delegate void ModUploadModelCallback(IntPtr target, QModel model, QAliasHeader header, IntPtr frames);
+    [UnmanagedFunctionPointer(CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
+    private delegate int UploadAliasModelCallback(IntPtr target, [MarshalAs(UnmanagedType.LPStr)] string name,
+        QAliasHeader header, IntPtr frames, [MarshalAs(UnmanagedType.LPArray, SizeConst = MaxAliasFrames)]
+        IntPtr[] poseVerts, IntPtr triangles, IntPtr stVerts);
 
-    [MonoPInvokeCallback(typeof(ModUploadModelCallback))]
-    private static void Callback_ModUploadModel(IntPtr target, QModel model, QAliasHeader header, IntPtr frames)
+    [MonoPInvokeCallback(typeof(UploadAliasModelCallback))]
+    private static int Callback_UploadAliasModel(IntPtr target, string name, QAliasHeader header, IntPtr frames, IntPtr[] poseVerts, IntPtr triangles, IntPtr stVerts)
     {
-        if (header != null)
+        if (header == null)
+        {
+            Debug.LogWarning($"Uploading invalid alias model, name = {name}");
+            return 0;
+        }
+
+        if (frames != IntPtr.Zero)
             header.frames = frames.ToStructArray<QAliasFrameDesc>(header.numFrames);
         
-        GetSelf(target).UploadModel(model, header);
+        var poseVertices = new QTriVertex[header.numFrames][];
+        for (int i = 0; i < header.numFrames && i < MaxAliasFrames; ++i)
+        {
+            poseVertices[i] = poseVerts[i].ToStructArray<QTriVertex>(header.numVerts);
+        }
+        
+        return GetSelf(target).UploadAliasModel(name, header, poseVertices,
+            triangles.ToStructArray<QTriangle>(header.numTriangles),
+            stVerts.ToStructArray<QSTVert>(header.numVerts));
     }
 
-    private void UploadModel(QModel model, QAliasHeader header)
+    private int UploadAliasModel(string name, QAliasHeader header, QTriVertex[][] poseVertices, QTriangle[] triangles, QSTVert[] stVertices)
     {
-        Debug.Log($"Model '{model?.name}' of type {model?.type}, num frames = {header?.numFrames}");
-        if (header?.frames != null)
-        {
-            string str = string.Join(", ", header.frames.Select(f => f.name));
-            Debug.Log($"Frame list: {str}");
-        }
+        Debug.Log($"Alias model '{name}' with {header.numVerts} vertices, {header.numTriangles} triangles, {header.numFrames} frame(s)");
+        return 1;
     }
 }
diff --git a/engine/code/gl_mesh.c b/engine/code/gl_mesh.c
index 6fd56fe..a62fa48 100644
--- a/engine/code/gl_mesh.c
+++ b/engine/code/gl_mesh.c
@@ -358,7 +358,5 @@ void GL_MakeAliasModelDisplayLists (model_t *m, aliashdr_t *hdr)
 	for (i=0 ; i<paliashdr->numposes ; i++)
 		for (j=0 ; j<numorder ; j++)
 			*verts++ = poseverts[i][vertexorder[j]];
-
-	Mod_UploadModel(m, paliashdr);
 }
 
diff --git a/engine/code/gl_model.c b/engine/code/gl_model.c
index d9c9c8c..fd41c0d 100644
--- a/engine/code/gl_model.c
+++ b/engine/code/gl_model.c
@@ -1507,7 +1507,7 @@ void Mod_LoadBrushModel (model_t *mod, void *buffer)
 		}
 	}
 
-	Mod_UploadModel(mod, NULL);
+	// TODO: upload brush model to UniQuake
 }
 
 /*
@@ -2015,6 +2015,10 @@ void Mod_LoadAliasModel (model_t *mod, void *buffer)
 	//
 	GL_MakeAliasModelDisplayLists (mod, pheader);
 
+	// TODO: upload model to UniQuake, receive & store identifier as a result
+	// Vertices = poseverts, UVs = stverts, indices = triangles
+	UQ_GL_UploadAliasModel(mod->name, pheader, poseverts, triangles, stverts);
+
 //
 // move the complete, relocatable alias model to the cache
 //	
diff --git a/engine/code/gl_model.h b/engine/code/gl_model.h
index 70c83a7..aca5fab 100644
--- a/engine/code/gl_model.h
+++ b/engine/code/gl_model.h
@@ -451,6 +451,6 @@ void	Mod_TouchModel (char *name);
 mleaf_t *Mod_PointInLeaf (float *p, model_t *model);
 byte	*Mod_LeafPVS (mleaf_t *leaf, model_t *model);
 
-void Mod_UploadModel(model_t *model, aliashdr_t *aliashdr);
+int UQ_GL_UploadAliasModel(char *name, aliashdr_t *aliashdr, trivertx_t **poseVerts, mtriangle_t *triangles, stvert_t *stVerts);
 
 #endif	// __MODEL__
diff --git a/engine/projects/uniquake/mod_uniquake.c b/engine/projects/uniquake/mod_uniquake.c
index fd58b8b..4c56c5d 100644
--- a/engine/projects/uniquake/mod_uniquake.c
+++ b/engine/projects/uniquake/mod_uniquake.c
@@ -7,17 +7,14 @@ typedef struct unity_modcalls_s
 {
 	void *target;
 
-	void(*ModUploadModel)(void *target, model_t *mdl, aliashdr_t *aliashdr, maliasframedesc_t *frames);
+	int(*UploadAliasModel)(void *target, char *name, aliashdr_t *aliashdr, maliasframedesc_t *frames, trivertx_t **poseVerts, mtriangle_t *triangles, stvert_t *stVerts);
 } unity_modcalls_t;
 
 const unity_modcalls_t *unity_modcalls;
 
-void Mod_UploadModel(model_t *mdl, aliashdr_t *aliashdr)
+int UQ_GL_UploadAliasModel(char *name, aliashdr_t *aliashdr, trivertx_t **poseVerts, mtriangle_t *triangles, stvert_t *stVerts)
 {
 	// C# doesn't really understand this idea of a variable-length embedded array of structs,
-	// so we pass along the pointer to the first element which allows us to manually marshal the entire array.
-	if (aliashdr)
-		unity_modcalls->ModUploadModel(unity_modcalls->target, mdl, aliashdr, &aliashdr->frames[0]);
-	else
-		unity_modcalls->ModUploadModel(unity_modcalls->target, mdl, aliashdr, NULL);
+	// so we pass along the pointer to the first frame struct which allows us to manually marshal the entire array.
+	return unity_modcalls->UploadAliasModel(unity_modcalls->target, name, aliashdr, &aliashdr->frames[0], poseVerts, triangles, stVerts);
 }