My last thread is here and thanks to the friendly guys.
http://www.opserver.de/ubb7/ubbthreads.php?ubb=showflat&Number=395912#Post395912

I still have two problems and I think it is better to talk in new thread.
1. How to render a sequence of tga(32bit) with alpha channel in runtime on a PANEL?

ent_create("001.tga",vector(1000,0,0),move_pos);

this works well and shows a transparent outlooking.
----------------------------------------------------

this can show like a movie, but does not support the mask area with alpha channel.
ENTIRY* myresource[500] seems not to be a good way

2. Engine seems to preload images into video memory, so I failed to render 500 sequence tga images in runtime. When loading at about the 120st image, it gets an error: Error E2005 - Can't create D3D texture. My video memory is 1GB, RAM is 12GB.
The limit is: 3 seconds content costs 5 seconds on loading. so dynamic loading may not solve this problem.

E2005 has nothing to do with the amount of memory you have.

Anyway I'd recommend using .dds textures instead. This saves a lot of memory. Why do you wait one frame between loading two images? No wonder it takes so long.

Panels of cause use alpha channels as well.

DDS is nice because if it's superior loading time and size (others may be smaller, but not in memory!), but whatch out if you have gradients in your image (either in the rgb or the alpha part), DDS makes this a bit worse. You can fiddle with the color key involved in the compression but basically gradients break the advantages in my oppinion. I also don't use them for texts. But for general textures they are good.

Other than that, - does somebody know if I put a movie stream on a bitmap, if I can access the contents in the pixel shader via tex2D? If so, you can actually do what you suggested: Just export the movie twice: Once regular and once just the mask. Then, you play the RGB movie on skin1 of an entity and the alpha-movie on skin2 and in a pixelshader you lookup RGB on skin1 and use the R part of skin2 as alpha in the output RGBA tupel of the pixel shader.

But thats just theory and is only possible if you can access the stream media in the pixelshader - which I don't know, as I said

Yes, I try to use level_load(""); in main function,and it finally gets transparent. OMG. I feel a little weird on such issues.

Yes, removing the "wait(1)" make it very fast to load images.
Therefore, dynamic loading becomes possible.

Als long as no level is loaded the background is not painted. Once a level is loaded the background is painted in the sky_color. You can force the background to be drawn withouht loading an empty level by setting screen_color to another value than total black. e.g.: