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Vertex Transparency DirectX 9

Started by erm1 Dec 8, 2013 at 12:14 AM 3 replies 2.6k views

Original Post

Dec 8, 2013 at 12:14 AM

Hello,

I have always been stuck on this one which is how to use the vertex alpha component in a mesh that has, Position, Color, Uv, & Normals.

I found something that mentioned this :

d3d->SetTextureStageState(0, D3DTSS_ALPHAARG1, D3DTA_DIFFUSE);

but it does not seem to work.

Any ideas ?

Thanks in advance .

Medo Mex

Dec 8, 2013 at 12:36 AM

Try something like the following:


device->SetRenderState( D3DRS_ALPHABLENDENABLE, TRUE );
device->SetRenderState( D3DRS_SRCBLEND, D3DBLEND_SRCALPHA );
device->SetRenderState( D3DRS_DESTBLEND, D3DBLEND_INVSRCALPHA );
device->SetRenderState( D3DRS_BLENDOP, D3DBLENDOP_ADD );

erm1

Dec 8, 2013 at 1:59 AM

Thanks I'll try that right now !

erm1

Dec 8, 2013 at 2:04 AM

OH yes, but actually, thinking about it. I just want the vertex transparency without having to use vertex blending,

Thanks anyway.

Steno

Dec 11, 2013 at 4:42 AM

You might also have to set the Texture stage rendering:

http://msdn.microsoft.com/en-us/library/windows/desktop/bb174462(v=vs.85).aspx

Basically, set your texture stages to use diffuse transparency (don't forget to set the materials).

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