Got it, thanks a lot! Colet Patrice
----- Mail original ----- > De: "Cyrille Henry" <[email protected]> > À: "Patrice Colet" <[email protected]> > Cc: "pd-list" <[email protected]> > Envoyé: Lundi 8 Avril 2013 10:05:22 > Objet: Re: [PD] flip image in glsl > > hello, > > when using rectangular texturing, coordinate goes from 0 to image > pixel size. > when using "rectangle 0" mode, pixel coordinate goes from 0 to 1. > (sometimes 1 is for the power of 2 bigger than the image pixel size) > > so, in rectangular mode, use pixetl_size - image coordinate to flip > the image. > and 1 - image coordinate in non rectangle mode. > > Image can be fliped because the "fliped" flag is not used on the > shader. > > cheers > c > > > > Le 08/04/2013 09:24, Patrice Colet a écrit : > > Hello, > > > > how is it possible to flip upside down an image in glsl example > > 05.multitexture > > > > I tried to implement this in fragment program: > > > > http://stackoverflow.com/questions/9857089/flip-upside-down-vertex-shader-gles > > > > but it doesn't work. The only thing I can do is changing texture > > scale and position, but I couldn't do it with negative values > > like it would be done in pix_coordinates. > > > > In fact when I use pix_multiimage before pix_texture, the image > > gets flipped, I don't know why... > > > > Colet Patrice > > > > > > _______________________________________________ > > [email protected] mailing list > > UNSUBSCRIBE and account-management -> > > http://lists.puredata.info/listinfo/pd-list > > > _______________________________________________ [email protected] mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
