texture: degrees of transparency

Graphics and GPU Programming Programming

Started by JohnyCage January 19, 2012 09:11 AM

2 comments, last by JohnyCage 12 years, 3 months ago

JohnyCage

122

Author

January 19, 2012 09:11 AM

hi dudes.,

how can i start to use 256 degrees of transparency on my textured objects? I use following lines of code:



texture512 = Texture.FromFile(d, "1.png", 512, 512, 1, Usage.None, Format.A8R8G8B8, Pool.Managed, Filter.Triangle, Filter.Triangle, Color.FromArgb(255, 255,  0, 0).ToArgb());

.

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device.SetRenderState(RenderState.AlphaBlendEnable, true);

device.SetRenderState(RenderState.SourceBlend, SlimDX.Direct3D9.Blend.SourceAlpha);



device.SetRenderState(RenderState.AlphaTestEnable, true);

device.SetRenderState(RenderState.AlphaRef, 0x01);

device.SetRenderState(RenderState.AlphaFunc, SlimDX.Direct3D9.Compare.Always);

Attached picture can describe better my problem. Black places are not mixed by yellow background.

JohnyCage

122

Author

January 19, 2012 09:23 AM

attached better picture.

Evil Steve

2,021

January 19, 2012 02:00 PM

You need to set the destination blend type too. Something like:



device.SetRenderState(RenderState.DestBlend, SlimDX.Direct3D9.Blend.InvSourceAlpha);

I'm not sure what the SlimDX state names are, but you want to set the destination blend to inverse source alpha.

JohnyCage

122

Author

January 19, 2012 02:52 PM

You need to set the destination blend type too. Something like:
device.SetRenderState(RenderState.DestBlend, SlimDX.Direct3D9.Blend.InvSourceAlpha);
I'm not sure what the SlimDX state names are, but you want to set the destination blend to inverse source alpha.

y, its right answer, thanks.

texture: degrees of transparency

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