How to render transparent vertexes?

[Wessel]

Hi!,

 

I'm trying to render a rectangle with a transparent color. I made a vertexbuffer like this:

 

CustomVertex.TransformedColored[] pVerts = new CustomVertex.TransformedColored[4];
//590; 494
		GraphicsStream pStream = m_pVertex.Lock(0,0,0);

		pVerts[0].Position = new Vector4(Position.X+Size.Width,Position.Y,Position.Z,1.0f);
		pVerts[1].Position = new Vector4(Position.X+Size.Width,Position.Y+Size.Height,Position.Z,1.0f);
		pVerts[2].Position =new Vector4(Position.X,Position.Y+Size.Height,Position.Z,1.0f);
		pVerts[3].Position =new Vector4(Position.X,Position.Y,Position.Z,1.0f);

		pVerts[0].Color = BackColor.ToArgb();
		pVerts[1].Color = BackColor.ToArgb();
		pVerts[2].Color = BackColor.ToArgb();
		pVerts[3].Color = BackColor.ToArgb();

		pStream.Write(pVerts);

		m_pVertex.Unlock();

 

The BackColor defines a color with an alpha channel.

When i try to render the vertexbuffer, no transparency is applied but the color is visible. The renderstate is defined like this:

 

m_pDevice.RenderState.SeparateAlphaBlendEnabled = true;
		m_pDevice.RenderState.DestinationBlend = Blend.InvSourceAlpha;
		m_pDevice.RenderState.SourceBlend = Blend.SourceAlpha;

 

Any ideas?

[DrunkenHyena]

m_pDevice.RenderState.SeparateAlphaBlendEnabled = true;
		m_pDevice.RenderState.DestinationBlend = Blend.InvSourceAlpha;
		m_pDevice.RenderState.SourceBlend = Blend.SourceAlpha;

I think you want to set AlphaBlendEnable, not SeparateAlphaBlendEnabled.