void DeleteShader(int ResourceTypes_Shaders){
auto it = mShaders.Find(ResourceTypes_Shaders);
if (it != mShaders.end())
mShaders.erase(it);
}
void DeleteTexture(int ResourceTypes_Textures){
auto it = mTextures.Find(ResourceTypes_Textures);
if (it != mTextures.end())
mTextures.erase(it);
}