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POTrying to Understand Stencils (XNA 4.0, Windows Phone 7)
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  1. POTrying to Understand Stencils (XNA 4.0, Windows Phone 7)
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    copied!<p>I'm trying to understand stencils. I could use a good tutorial explaining how they work, but in the mean time here's what I'm working with:</p> <pre><code>DepthStencilState _StencilAlways; DepthStencilState _StencilKeepIfZero; SpriteBatch _StencilBatch; SpriteBatch _MaskBatch; _StencilAlways = new DepthStencilState(); _StencilAlways.StencilEnable = true; _StencilAlways.StencilFunction = CompareFunction.Always; _StencilAlways.StencilPass = StencilOperation.Replace; _StencilAlways.ReferenceStencil = 1; _StencilAlways.DepthBufferEnable = false; _StencilKeepIfZero = new DepthStencilState(); _StencilKeepIfZero.StencilEnable = true; _StencilKeepIfZero.StencilFunction = CompareFunction.Equal; _StencilKeepIfZero.StencilPass = StencilOperation.Keep; _StencilKeepIfZero.ReferenceStencil = 0; _StencilKeepIfZero.DepthBufferEnable = false; RenderTarget2D MaskRenderTarget = new RenderTarget2D(device, Width, Height, false, SurfaceFormat.Color, DepthFormat.Depth24Stencil8, 0, RenderTargetUsage.DiscardContents); GraphicsDevice.SetRenderTarget(MaskRenderTarget); GraphicsDevice.Clear(ClearOptions.Target | ClearOptions.Stencil, new Color(0, 0, 0, 1), 0, 0); _MaskBatch.Begin(SpriteSortMode.Immediate, null, null, _StencilAlways, null); _MaskBatch.Draw( Texture, Position, null, Shade, 0, Vector2.Zero, Scale, SpriteEffects.None, 0); _MaskBatch.End(); _StencilBatch.Begin(SpriteSortMode.Immediate, null, null, _StencilKeepIfZero, null); _StencilBatch.DrawString( _Font, Line, Position2, Shade); _StencilBatch.End(); _RenderedTexture = MaskRenderTarget; GraphicsDevice.SetRenderTargets(null); </code></pre> <p>There might be some transposition/sanitation errors, but any ideas what I'm doing wrong?</p>
 

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