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alpha dosent work?!?

Archives Forums/Blitz3D SDK Bug Reports/alpha dosent work?!?

kalix(Posted 2009) [#1]
hi im new here and i just got the blitz3d sdk.

i tryed to set the alpha property of an object and... nothing happens!
i even tried it on your demo!

static class RotateCube
{
[STAThread]
static void Main()
{
bb.BeginBlitz3D();
bb.Graphics3D(960, 540, 0, 2);

int cube = bb.CreateCube(0);
int light = bb.CreateLight(1, 0);
int camera = bb.CreateCamera(0);

bb.PositionEntity(camera, 0, 0, -4, 1);

bb.EntityAlpha(cube, 0.1f); // as i understand this line should make the cube transperent ... it dosent.

while (bb.KeyHit(bb.KEY_ESCAPE) == 0)
{
bb.UpdateWorld(1);
bb.RenderWorld(0);
bb.TurnEntity(cube, .1f, .2f, .3f, 1);
bb.Text(20, bb.GraphicsHeight() - 20, "Blitz3DSDK C# Example (C)2007 Blitz Research 2007", 0, 0);
bb.Flip(1);
}
bb.EndBlitz3D();
}
}


i got this program after a friend showed blitz3d to me on my computer and the alpha works there (i dont think it my gfx card).
as i understand the sdk is the exact same engine so i dont get it.
am i doing something wrong or is this a bug?


kalix(Posted 2009) [#2]
is any1 even going to answer me?


Mahan(Posted 2009) [#3]
Hi Kalix,

Unfortunately the Blitz3DSDK forums are among the least visited (and the Blitz3DSDK is probably BRLs least bought product as well). =/

I'm not at my home-computer right now but I will try this out when I get home and post back to you with my results.


Floyd(Posted 2009) [#4]
The RenderWorld(0) looks like the problem. Your example doesn't need any value for tween#. But if you do use a value then you need something other than 0.

That would be the case for ordinary Blitz3D. I don't have Blitz3DSDK installed right now.


Mahan(Posted 2009) [#5]
Floyd is right: answer in main thread:

http://www.blitzbasic.com/Community/posts.php?topic=86421


kalix(Posted 2009) [#6]
yes yes yes HELL YES! i did not know that! that code is directly from the demo that comes with blitz!
thank you very mach!