/// <summary>
/// Initializes a new instance of the <see cref="RenderTarget" /> class.
/// </summary>
/// <param name="buffers">The render target buffers.</param>
/// <param name="colorSpace">The render target color space.</param>
/// <param name="sampling">The render target buffer sampling options.</param>
public RenderTarget(TargetBuffers buffers = TargetBuffers.Color0, ColorSpace colorSpace = ColorSpace.Linear, Sampling sampling = Sampling.None)
{
if (buffers == TargetBuffers.None)
{
throw new ArgumentException("Render target must have at least one buffer.", nameof(buffers));
}
if ((buffers & TargetBuffers.Color0) == TargetBuffers.Color0)
{
this.Color0 = new Texture2D(null, colorSpace, sampling);
}
if ((buffers & TargetBuffers.Color1) == TargetBuffers.Color1)
{
this.Color1 = new Texture2D(null, colorSpace, sampling);
}
if ((buffers & TargetBuffers.Color2) == TargetBuffers.Color2)
{
this.Color2 = new Texture2D(null, colorSpace, sampling);
}
if ((buffers & TargetBuffers.Color3) == TargetBuffers.Color3)
{
this.Color3 = new Texture2D(null, colorSpace, sampling);
}
if ((buffers & TargetBuffers.DepthStencil) == TargetBuffers.DepthStencil)
{
this.DepthStencil = new Texture2D(null, ColorSpace.sRGB, sampling & ~Sampling.Mipmap);
}
}
/// <summary>
/// Configures the render target.
/// </summary>
/// <param name="width">The render target width in pixels.</param>
/// <param name="height">The render target height in pixels.</param>
/// <param name="renderTarget">The render target. Null selects the default render target.</param>
public static void Target(int width, int height, RenderTarget renderTarget = null)
{
Width = width;
Height = height;
if (renderTarget != null)
{
currentTargetBuffers = renderTarget.Initialize(width, height);
}
else if (RenderTarget != null)
{
gl.BindFramebuffer(GL.FRAMEBUFFER, 0);
gl.BindRenderbuffer(GL.RENDERBUFFER, 0);
currentTargetBuffers = TargetBuffers.Color0 | TargetBuffers.DepthStencil;
}
RenderTarget = renderTarget;
gl.Viewport(0, 0, width, height);
}
