Alpha channel

[lincsimp]

Hi
In the custom scene node tutorial the vertices are defined like this:

Vertices[0] = video::S3DVertex(0,0,10, 1,1,0, video::SColor(255,0,255,255), 0, 1);

If the values in the alpha channel are changed nothing happens, so it it necessary here? If it is not necessary shouldn't there be an SColor construcor like this SColor(f32 r, f32 g, f32 b) ? Could a 24 bit format be used?

I'm new here so I don't really know...

Cheers

[puh]

Try change the code to

Code: Select all

SceneManager->registerNodeForRendering(this, ESNRP_TRANSPARENT)

and then transparency will work i suppose... Not tested though.

[lincsimp]

Ok thanks, now I've got:

Code: Select all

Vertices[0] = video::S3DVertex(0,0,10, 1,1,0, video::SColor(0,0,255,255), 0, 1);
		Vertices[1] = video::S3DVertex(10,0,-10, 1,0,0, video::SColor(0,255,0,255), 1, 1);
		Vertices[2] = video::S3DVertex(0,20,0, 0,1,1, video::SColor(0,255,255,0), 1, 0);
		Vertices[3] = video::S3DVertex(-10,0,-10, 0,0,1, video::SColor(0,0,255,0), 0, 0);
		 SceneManager->registerNodeForRendering(this, ESNRP_TRANSPARENT) ;

Unfortunately it hasn't changed, what've I done wrong?

Cheers

[bitplane]

I'm pretty sure this works:
setMaterialType(video::EMT_TRANSPARENT_VERTEX_ALPHA);

[lincsimp]

Thanks!

To test I set all of the alpha values to 0, should this make the object transparent?

cheers

[puh]

Hm, i think that drawIndexedTriangleList is not able to draw transparent objects...