private void PrepareBuffer()
{
if (InstanceDataVertexBuffer == null)
{
if (SceneObjects.Count > 0)
{
InstanceDataVertexBuffer = PrivateRendererContext.CreateVertexBuffer(IntPtr.Zero,
SceneObjectArrayInstanceData.SIZE,
RendererBufferUsage.DynamicDraw, "SceneObjectArrayInstanceData_VBO_" + ObjectName + "_" + DateTime.Now.Ticks);
SceneObjectArrayInstanceData[] data = CollectData();
InstanceDataVertexBuffer.Clear();
InstanceDataVertexBuffer.UpdateSubBuffer<SceneObjectArrayInstanceData>(data, 0, data.Length * SceneObjectArrayInstanceData.SIZE);
}
}
else
{
SceneObjectArrayInstanceData[] data = CollectData();
if ((SceneObjects.Count * SceneObjectArrayInstanceData.SIZE) > InstanceDataVertexBuffer.SizeInBytes)
{
int actual_size = data.Length * SceneObjectArrayInstanceData.SIZE;
PrivateRendererContext.DeleteGraphicsResource(InstanceDataVertexBuffer);
if (SceneObjects.Count > 0)
{
InstanceDataVertexBuffer = PrivateRendererContext.CreateVertexBuffer(IntPtr.Zero, actual_size,
RendererBufferUsage.DynamicDraw, "SceneObjectArrayInstanceData_VBO_" + ObjectName + "_" + DateTime.Now.Ticks);
}
InstanceDataVertexBuffer.Clear();
InstanceDataVertexBuffer.UpdateSubBuffer<SceneObjectArrayInstanceData>(data, 0, data.Length * SceneObjectArrayInstanceData.SIZE);
}
}
}