Added PostLoad methods to ensure all models have created vertex buffers and all materials have generated shaders before the user gains control of the camera, to fix hitching issues

src/Core/Resource/CMaterial.cpp

@@ -78,13 +78,16 @@ CMaterial* CMaterial::Clone()
     return pOut;
 }
 
-void CMaterial::GenerateShader()
+void CMaterial::GenerateShader(bool AllowRegen /*= true*/)
 {
-    delete mpShader;
-    mpShader = CShaderGenerator::GenerateShader(*this);
+    if (mShaderStatus != eShaderExists || AllowRegen)
+    {
+        delete mpShader;
+        mpShader = CShaderGenerator::GenerateShader(*this);
 
-    if (!mpShader->IsValidProgram()) mShaderStatus = eShaderFailed;
-    else mShaderStatus = eShaderExists;
+        if (!mpShader->IsValidProgram()) mShaderStatus = eShaderFailed;
+        else mShaderStatus = eShaderExists;
+    }
 }
 
 bool CMaterial::SetCurrent(FRenderOptions Options)

src/Core/Resource/CMaterial.h

@@ -76,7 +76,7 @@ public:
     CMaterial(EGame version, FVertexDescription vtxDesc);
     ~CMaterial();
     CMaterial* Clone();
-    void GenerateShader();
+    void GenerateShader(bool AllowRegen = true);
     bool SetCurrent(FRenderOptions Options);
     u64 HashParameters();
     void Update();

src/Core/Resource/Model/CModel.cpp

@@ -75,6 +75,20 @@ void CModel::BufferGL()
     mBuffered = true;
 }
 
+void CModel::GenerateMaterialShaders()
+{
+    for (u32 iSet = 0; iSet < mMaterialSets.size(); iSet++)
+    {
+        CMaterialSet *pSet = mMaterialSets[iSet];
+
+        for (u32 iMat = 0; iMat < pSet->NumMaterials(); iMat++)
+        {
+            CMaterial *pMat = pSet->MaterialByIndex(iMat);
+            pMat->GenerateShader(false);
+        }
+    }
+}
+
 void CModel::ClearGLBuffer()
 {
     mVBO.Clear();

src/Core/Resource/Model/CModel.h

@@ -23,6 +23,7 @@ public:
     ~CModel();
 
     void BufferGL();
+    void GenerateMaterialShaders();
     void ClearGLBuffer();
     void Draw(FRenderOptions Options, u32 MatSet);
     void DrawSurface(FRenderOptions Options, u32 Surface, u32 MatSet);

src/Core/Resource/Model/CStaticModel.cpp

@@ -89,6 +89,12 @@ void CStaticModel::BufferGL()
     mBuffered = true;
 }
 
+void CStaticModel::GenerateMaterialShaders()
+{
+    if (mpMaterial)
+        mpMaterial->GenerateShader(false);
+}
+
 void CStaticModel::ClearGLBuffer()
 {
     mVBO.Clear();

src/Core/Resource/Model/CStaticModel.h

@@ -22,6 +22,7 @@ public:
     void AddSurface(SSurface *pSurface);
 
     void BufferGL();
+    void GenerateMaterialShaders();
     void ClearGLBuffer();
     void Draw(FRenderOptions Options);
     void DrawSurface(FRenderOptions Options, u32 Surface);