/// <summary>
/// Function to set up state prior to rendering.
/// </summary>
/// <param name="blendStateOverride">An override for the current blending state.</param>
/// <param name="depthStencilStateOverride">An override for the current depth/stencil state.</param>
/// <param name="rasterStateOverride">An override for the current raster state.</param>
/// <param name="output">The target used as the output.</param>
/// <param name="camera">The active camera.</param>
/// <returns><b>true</b> if state was overridden, <b>false</b> if not or <b>null</b> if rendering is canceled.</returns>
private bool SetupStates(GorgonBlendState blendStateOverride, GorgonDepthStencilState depthStencilStateOverride, GorgonRasterState rasterStateOverride, GorgonRenderTargetView output, IGorgon2DCamera camera)
{
if (!_isInitialized)
{
OnInitialize();
_isInitialized = true;
}
bool outputSizeChanged = false;
if ((_prevOutputSize.Width != output.Width) ||
(_prevOutputSize.Height != output.Height))
{
_prevOutputSize = new DX.Size2(output.Width, output.Height);
outputSizeChanged = true;
}
OnBeforeRender(output, camera, outputSizeChanged);
if ((blendStateOverride == BlendStateOverride) &&
(depthStencilStateOverride == DepthStencilStateOverride) &&
(rasterStateOverride == RasterStateOverride))
{
return(false);
}
BatchStateBuilder.BlendState(blendStateOverride ?? GorgonBlendState.Default)
.DepthStencilState(depthStencilStateOverride ?? GorgonDepthStencilState.Default)
.RasterState(rasterStateOverride ?? GorgonRasterState.Default);
BlendStateOverride = blendStateOverride;
DepthStencilStateOverride = depthStencilStateOverride;
RasterStateOverride = rasterStateOverride;
return(true);
}
