Search

09-18-2008, 19:24 chriss0212 Joined on 03-21-2006 Düsseldorf/ Germany Posts 315 big picture size i need to import a picture with very big dimensions (> 20.000 pix) which is of course to much for a single texture. if i make slices from that big picture i get gaps between the pictures if i zoom SMALLER. everything is fine if i zoom in. any idear ?? greetz chriss ...........and don't give up :-)    Report

09-19-2008, 9:42 Karol Joined on 05-15-2005 Posts 288 Re: big picture size Hi Chriss! If you need to display pictures of such dimensions you have to splitt this monster into smaller pieces (so called monster-slayer approach ;) ). Start the Caps Viewer that is integrated in Ventuz (Tools menu). It displays a list of graphics devices. Click on your primary graphics card and than chose 'Hardware'. There is an entry Max Texture Width/Height. This is the maximums size of picture fragments that you can use. Just to get you right: you get gaps if you zoom out (bigger part of the picture is visible)? Thats strange. Normally it shoud be vice versa: you get gaps if you zoom in because the parts are not connected correctly. Could you post a screenshot!? Try the Z-Testing node and disable z-testing. Best Regards karol    Report

09-19-2008, 11:45 chriss0212 Joined on 03-21-2006 Düsseldorf/ Germany Posts 315 Re: big picture size hi karol.... hope you feel fine :-) the problem seems to be the filter of the texture loader......if i am un linear i have ainterpolation on the first pixels which makes the image a little bit smooth at the beginning and thats the "gap" i think. I think fpr the moment a solution coud be, to makes the picture slice not in that way that they fit pixel to pixel....i think i have to make a little "overlap" and than scale the picture on the 2d mapping :-( what do you think?? greetz and gratulations to 2008 :-) i am testing :-) ...........and don't give up :-)    Report

09-20-2008, 10:44 Ralf Stanke Joined on 05-15-2005 Hamburg, Germany Posts 366 Re: big picture size Hi Chriss, A texture on Direct3D or OpenGL should always be in power of 2 dimensions. (2048,1024,512,256,..) Ventuz does automatically calculate Mipmaps for textures which actually halfen the dimension by two for every level - down to 1x1 pixel. If your Level0 (original image) is not a pow2 sized one, the graphics board is scaling it to the next higher pow2 size - this results in blurry images on level0. To avoid this, splitt you monter in e.g. 4096, 4096 pieces... Ralf    Report