How do I change the opacity of a sprite?

How do I change the opacity of a sprite?

• spoimala

  Jason Olson wrote:

  Color myTransparentColor = new Color(255, 255, 255, 127); mySpriteBatch.Draw( myTexture, myDestination, myTransparentColor);

  
  
  Yes, that's how you do it.
  
  
  

• CPPUSer7

  Falklian, I don't have XNA GSE in front of me, so keep that in mind.

  My guess would be to build your own Color structure to pass to the Draw method in SpriteBatch rather than Color.White, since the Color constructor has an overload that accepts a Byte value for the Alpha component. So, for your SpriteBatch, you might do something like the following (to draw a half-transparent sprite):

  Color myTransparentColor = new Color(255, 255, 255, 127);

  mySpriteBatch.Draw( myTexture, myDestination, myTransparentColor);

  Like I said, I can't verify this, but it's what I would try first.

  For an example based Color.White, check out the XNA documentation How To (XNA -> XNA GSE -> Programming Guide -> Graphics -> 2D Graphics -> How To: Draw a Sprite). Just modify that to use the transparent color above.

  I hope this helps (since I can't check myself) :).

  
  

• IGiberson

  Okay, I got home and tried this out. A quick note: if you want the alpha components to actually be transparent, you need to add SpriteBlendMode.AlphaBlend in your call to mySpriteBatch.Begin(). So, it might look like the following:

  mySpriteBatch.Begin(SpriteBlendMode.AlphaBlend);

  mySpriteBatch.Draw(myTexture, myDestination, new Color(255, 255, 255, 127));

  mySpriteBatch.End();

  Without adding the SpriteBlendMode.AlphaBlend parameter to the Begin() call, your textures will not be alpha blended.

  
  

• shakalama

  Sweet!
  
  Thanks for the replies!
  
  Bill
  
  
  
• How do I change the opacity of a sprite?