transparency problem

[Chet]

I know I had this working - maybe back when using 1.5.1, not sure when it changed because I was working on other things. The windows and other objects with have transparent parts are a separate model and for some reason now some of the parts that are not supposed to be transparent come up that way (I lose the frames on the windows).
So far I have tried using all the transparency setting listed in the documentation

• # EMT_TRANSPARENT_ADD_COLOR : irr::video
  # EMT_TRANSPARENT_ALPHA_CHANNEL : irr::video
  # EMT_TRANSPARENT_ALPHA_CHANNEL_REF : irr::video
  # EMT_TRANSPARENT_REFLECTION_2_LAYER : irr::video
  # EMT_TRANSPARENT_VERTEX_ALPHA : irr::video

I tried different versions of the transparent texture (jpg/png)
Depending on the combination I get either nothing transparent or everything transparent. (the vertex alpha messes up the models).

Code: Select all

scene::ISceneNode * window = smgr->addMeshSceneNode(smgr->getMesh(path+"/towers1win.x"));
                          window->setPosition(core::vector3df(512,26.2,575));
             window->setRotation(core::vector3df(0,90,0));
             window->setMaterialFlag(video::EMF_LIGHTING, true);
window->setMaterialType(video::EMT_TRANSPARENT_ADD_COLOR); 

[hybrid]

A jpg texture is not transparent at all - except for the addColor transparency. png may or may not have a correct alpha channel. We'd need to see the texture, the model, and some screenshots to help you more.

[Chet]

ok first a picture from the model software
(I placed a cube behind it so you could see the transparency)

here it is exported and in irrlicht. this one uses jpg and add_color method. jpg is what I wind up with by default exporting so I am pretty sure thats what I used before - I did not make changes to the .x file back when I had this working.




and here I tried making a png texture with transparent setting and using alpha channel ref and editing the .x file to use png for that part of the model.


note: transparency is set to about 50% on the 'glass' it just occured to me while typing this to ask if that should be different - I have not experimented with that factor.
the png file is available in the same place the images are loading from. the actual model file is very large since it includes a lot more than 1 window I will make a single file and upload if thats really needed.
I am still completely stumped why this was working just fine with a plain jpg before and now the solid parts disappear ...