private static ClearBufferMask GetClearFlags(GraphicsBuffersFormat.BufferType bufferMask)
{
ClearBufferMask clearFlags = 0;
if ((bufferMask & GraphicsBuffersFormat.BufferType.Color) != 0)
{
clearFlags |= ClearBufferMask.ColorBufferBit;
}
if ((bufferMask & GraphicsBuffersFormat.BufferType.Depth) != 0)
{
clearFlags |= ClearBufferMask.DepthBufferBit;
}
if ((bufferMask & GraphicsBuffersFormat.BufferType.Stencil) != 0)
{
clearFlags |= ClearBufferMask.StencilBufferBit;
}
return(clearFlags);
}
/// <summary>
/// Clear surface buffers.
/// </summary>
/// <param name="ctx">
/// A <see cref="GraphicsContext"/> used for clearing buffers.
/// </param>
/// <param name="bufferMask">
/// A <see cref="GraphicsBuffersFormat.BufferType"/> indicating which buffers to clear.
/// </param>
public void Clear(GraphicsContext ctx, GraphicsBuffersFormat.BufferType bufferMask)
{
// Update clear values (only what is necessary)
if ((bufferMask & GraphicsBuffersFormat.BufferType.Color) != 0)
{
Gl.ClearColor(mClearColor.Red, mClearColor.Green, mClearColor.Blue, mClearColor.Alpha);
}
if ((bufferMask & GraphicsBuffersFormat.BufferType.Depth) != 0)
{
Gl.ClearDepth(mClearDepth);
}
if ((bufferMask & GraphicsBuffersFormat.BufferType.Stencil) != 0)
{
Gl.ClearStencil(mClearStencil);
}
// Clear
Gl.Clear(GetClearFlags(bufferMask));
}