Managed DirectX9 ColorKey

Question

I've managed to load a texture with TextureLoader.LoadFromFile(), and provided it with Color.Black.ToArgb() for it's colorkey.

Unfortunately, when I render it, using Device.DrawUserPrimitives, I'm still seeing black.

Am I missing some code to enable the use of the ColorKey?

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Needed to set some renderstate on the Device:

Device.RenderState.AlphaBlendEnable = true;
Device.RenderState.SourceBlend = Blend.SourceAlpha;
Device.RenderState.DestinationBlend = Blend.InvSourceAlpha;

Answer 1

I'm not certain which but I think you need to enable the render state(s) AlphaBlendEnable and/or AlphaTestEnable. You might also have to set the blend modes.

Answer 2

By the way, you're using Managed DirectX, which has long been discontinued. You should consider switching to XNA or SlimDX.