Can't make transparent objects transparent/visible

In blender I make four cubes with alpha of matereal set to 1.0, 0.75, 0.5, 0.25 and with different material color (white for opaque cude, R/G/B for others). The "Trans Z" or "Z Trans" (forgot) is set for all the cubes.
But on simulator I can see only red cube with alpha 0.75 o_O Can you point me my mistake?
P.S. Using tut4 code to display the scene on iPhone.

You need to set the blending mode for the material... check the tutorial04 video for more information...

Dude, tutorial04 video shows how to use alpha channel of texture image. But I want to achieve transparence with no images on object. What I've seen in the tutorial is setting the texture blending mode (
May be I miss something... or it's not allowed by the engine to make transparent objects with no texture images?

Heuuu ya man... just set the diffuse alpha and set a blending mode to the material...

Feeling stupid. Assuming I can't find the way to do that, can you tell what to do step-by-step (it's easy to me to achieve transparence when Blender renders the scene itself, but not for sio2).
I never before deal with 3D design (almost...), but I'm pretty expirienced programmer. Sorry, guys. I don't like stupid questions too (

Hey man sorry about that... you are right... within Blender the blend mode can only be set if a texture is applied... sorry Blender rules... however YES SIO2 can handle it here's the snippet to make it work:

Code:



// Manually set the blending mode of the material
sio2ResourceGetMaterial( sio2->_SIO2resource,
                   "material/Material" )->blend = SIO2_MATERIAL_ADD;

// Update the object type so it'll be rendered with SIO2_RENDER_ALPHA_OBJECT
sio2ObjectUpdateType( sio2ResourceGetObject( sio2->_SIO2resource,
                                  "object/Cube" ) );

// Render back and front face ?
sio2EnableState( &sio2ResourceGetObject( sio2->_SIO2resource,
                               "object/Cube" )->flags, SIO2_OBJECT_TWOSIDE );




Great. Thanks a lot for the help.