Hi all, here is Marco, this is my first post.. glad to be here. i'm trying to use the [alpha] object to mix different videos using OpenGL. I followed tutorials, checked the forum and the list but i still have this problem: I can change the transparency of a geo without texture, and everything works also when i load images. But when i add [pix_film] or [pix_movie] and i load a video the geo itself disappears - if alpha is on - and appears again (displaying correctly the video) when alpha is off. I also tried to change [pix_texture] with [pix_texture2] and [rectangle] with other geos, but nothing... I think this is pretty strange. this is my basic patch not working:
[gemhead] | [pix_film]X[t f] | [pix_texture] | [alpha] | [colorRGB] | [square]
Cannot understand if it could be a problem of my graphic card - ATI Mobility Radeon X1600 - or something else. I work - unfortunately - on windows xp pro, with pd-extended latest stable release. i didn't have the chance to try the same on another computer, by now. Thanks a lot to everybody..
cheers...
Marco
info@thesaddj.com wrote:
Hi all, here is Marco, this is my first post.. glad to be here. i'm trying to use the [alpha] object to mix different videos using OpenGL. I followed tutorials, checked the forum and the list but i still have this problem: I can change the transparency of a geo without texture, and everything works also when i load images. But when i add [pix_film] or [pix_movie] and i load a video the geo itself disappears - if alpha is on - and appears again (displaying correctly the video) when alpha is off. I also tried to change [pix_texture] with [pix_texture2] and [rectangle] with other geos, but nothing... I think this is pretty strange. this is my basic patch not working:
[gemhead] | [pix_film]X[t f] | [pix_texture] | [alpha] | [colorRGB] | [square]
That should work. even if the order is a little strange, because I would put the alpha and color before the pix_texture, but it is working here and I also have an ATI Radeon X1600 (MacOS). what do you mean with "turn alpha on/off"? are you setting the alpha by sending a value between 0 and 1 to the rightmost inlet of colorRGB? are there additional things in your patch which could cause the problem? marius.
Cannot understand if it could be a problem of my graphic card - ATI Mobility Radeon X1600 - or something else. I work - unfortunately - on windows xp pro, with pd-extended latest stable release. i didn't have the chance to try the same on another computer, by now. Thanks a lot to everybody..
cheers...
Marco
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
info@thesaddj.com wrote:
Hi all, here is Marco, this is my first post.. glad to be here. i'm trying to use the [alpha] object to mix different videos using OpenGL. I followed tutorials, checked the forum and the list but i still have this problem: I can change the transparency of a geo without texture, and everything works also when i load images. But when i add [pix_film] or [pix_movie] and i load a video the geo itself disappears - if alpha is on - and appears again (displaying correctly the video) when alpha is off.
this seems to be a problem with the video having an alpha-channel set to 0 - thus making the video totally transparent. the problem might be not the actual video-data but the video-importer. which platform are you on?
I also tried to change [pix_texture] with [pix_texture2] and [rectangle] with other geos, but nothing...
this is expected, as [pix_texture2] is (nowadays) really just an alias for [pix_texture] and all Geos should behave consistently.
mfdasr IOhannes
-
info＠thesaddj.com -
IOhannes m zmoelnig -
marius schebella