Re: Draw Text in 3D world with depth buffer

Daniel Hanson — Sat, 16 May 2009 20:37:12 GMT

Be careful. Using SpriteBatch and 3D at the same time affects more in the render state than just the depth buffer. See this article by Shawn Hargreaves.

Re: Draw Text in 3D world with depth buffer

underdog32 — Sat, 16 May 2009 15:47:05 GMT

I was just trying to figure out how to do this yesterday. Thanks!

Draw Text in 3D world with depth buffer

SpaceDude — Sat, 16 May 2009 15:24:07 GMT

Just in case anybody else is wondering how to draw text at a 3d position in the world which gets occluded by geometry, here is a little function I wrote:

    
                    public void DrawText(Camera camera, string text, Vector3 position, Color color) 
        
                    { 
        
                        Vector3 screenPos = camera.Viewport.Project(position, camera.ProjectionMatrix, camera.ViewMatrix, Matrix.Identity); 
        
                        spriteBatch.Begin(SpriteBlendMode.AlphaBlend, SpriteSortMode.Immediate, SaveStateMode.None); 
        
                        RenderState renderState = Game.Instance.GraphicsDevice.RenderState; 
        
                        renderState.DepthBufferEnable = true; 
        
                        renderState.DepthBufferWriteEnable = false; 
        
                        spriteBatch.DrawString(font, text, new Vector2(screenPos.X, screenPos.Y), color, 0, Vector2.Zero, 1, SpriteEffects.None, screenPos.Z); 
        
                        spriteBatch.End(); 
        
                    }

Hope it's helpful. I used a few classes from my own game (Camera, Game.Instance) but it should be pretty self explanatory where the variables came from.

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Re: Draw Text in 3D world with depth buffer

Re: Draw Text in 3D world with depth buffer

Draw Text in 3D world with depth buffer