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Question by MasterLu · Jul 27, 2016 at 02:55 PM · camerarenderinggraphics.drawtexture

Strange behaviour of OnPreRender

Hi!

I encountered a strange behaviour with cameras, the OnPreRender Event and Graphics.DrawTexture. When i draw a simple texture with camera.pixelHeight the editor draws it over the gameWindow. Only the first camera show this behaviour. All other cameras in the scene with the exact same script do it right. I checked the Screen.height and pixelHeight values from every camera and they appear to be correct. Can anyone explain this behaviour to me? I use Unity version 5.3.5.

 public Texture2D T = null;
 public float Offset = 0.0f;
 void OnPreRender()
 {
         GL.PushMatrix();
         GL.LoadPixelMatrix();
 
         Rect r = new Rect((this.GetComponent<Camera>().pixelWidth * 0.5f) - 50.0f + this.Offset, 0.0f, 100.0f, this.GetComponent<Camera>().pixelHeight);
         if (this.T == null)
         {
             this.T = new Texture2D(1, 1);
             this.T.SetPixel(1, 1, Color.red);
             this.T.Apply();
         }
         Graphics.DrawTexture(r, this.T);
 
         GL.PopMatrix();
     }

alt text

onprerender.png (64.9 kB)
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