private void ClearTargets(RenderTargetBinding[] targets, SharpDX.Direct3D11.CommonShaderStage shaderStage)
{
// NOTE: We make the assumption here that the caller has
// locked the d3dContext for us to use.
// We assume 4 targets to avoid a loop within a loop below.
var target0 = targets[0].RenderTarget;
var target1 = targets[1].RenderTarget;
var target2 = targets[2].RenderTarget;
var target3 = targets[3].RenderTarget;
// Make one pass across all the texture slots.
for (var i = 0; i < _textures.Length; i++)
{
if (_textures[i] == null)
continue;
if (_textures[i] != target0 &&
_textures[i] != target1 &&
_textures[i] != target2 &&
_textures[i] != target3)
continue;
// Immediately clear the texture from the device.
_dirty &= ~(1 << i);
_textures[i] = null;
shaderStage.SetShaderResource(i, null);
}
}