Comments on: How to render alpha maps in Blender 3D and YafaRay for architecture http://www.blender3darchitect.com/2009/09/how-to-render-alpha-maps-in-blender-3d-and-yafaray-for-architecture/ Using Blender 3D for Architectural Visualization Sun, 07 Mar 2010 20:19:49 +0000 http://wordpress.org/?v=2.9.1 hourly 1 By: julien34 http://www.blender3darchitect.com/2009/09/how-to-render-alpha-maps-in-blender-3d-and-yafaray-for-architecture/comment-page-1/#comment-7430 julien34 Mon, 21 Sep 2009 15:32:38 +0000 http://www.blender3darchitect.com/?p=715#comment-7430 Hi, just a note about shadows: To have shadows cast correctly, you have to select "transparent shadows" in yafaray settings. And if you want "black" shadows turn down the "dvar" factor in blender "map to" texture setting, otherwise instead of the shadow, you will have some sort "decal" of your texture (meaning the shadow is texture itself, with color and everything). Thanks a lot for all your great tutorials. Hi, just a note about shadows:
To have shadows cast correctly, you have to select “transparent shadows” in yafaray settings.
And if you want “black” shadows turn down the “dvar” factor in blender “map to” texture setting, otherwise instead of the shadow, you will have some sort “decal” of your texture (meaning the shadow is texture itself, with color and everything).

Thanks a lot for all your great tutorials.

]]> By: Ashworth http://www.blender3darchitect.com/2009/09/how-to-render-alpha-maps-in-blender-3d-and-yafaray-for-architecture/comment-page-1/#comment-7194 Ashworth Sun, 13 Sep 2009 20:00:45 +0000 http://www.blender3darchitect.com/?p=715#comment-7194 I don't know if this has the same effect in Yafray but with the blender internal renderer click the "Premul"tiply button in the image input channel to let blender know that you want to exclusively use the alpha from the map and not from it's own internal alpha calculations. I don’t know if this has the same effect in Yafray but with the blender internal renderer click the “Premul”tiply button in the image input channel to let blender know that you want to exclusively use the alpha from the map and not from it’s own internal alpha calculations.

]]> By: sfepa http://www.blender3darchitect.com/2009/09/how-to-render-alpha-maps-in-blender-3d-and-yafaray-for-architecture/comment-page-1/#comment-7136 sfepa Fri, 11 Sep 2009 13:16:37 +0000 http://www.blender3darchitect.com/?p=715#comment-7136 it's ok. i didn't knew that thing and had no idea how to remove that black areas, and even what they are :) here http://img183.imageshack.us/img183/9854/n21mal.jpg and here http://img183.imageshack.us/img183/915/n23.jpg it’s ok. i didn’t knew that thing and had no idea how to remove that black areas, and even what they are :)
here
http://img183.imageshack.us/img183/9854/n21mal.jpg
and here
http://img183.imageshack.us/img183/915/n23.jpg

]]> By: Allan Brito http://www.blender3darchitect.com/2009/09/how-to-render-alpha-maps-in-blender-3d-and-yafaray-for-architecture/comment-page-1/#comment-7111 Allan Brito Thu, 10 Sep 2009 12:04:15 +0000 http://www.blender3darchitect.com/?p=715#comment-7111 Good point sfepa! I totally forgot to mention that! Good point sfepa! I totally forgot to mention that!

]]> By: Felix http://www.blender3darchitect.com/2009/09/how-to-render-alpha-maps-in-blender-3d-and-yafaray-for-architecture/comment-page-1/#comment-7108 Felix Thu, 10 Sep 2009 11:02:17 +0000 http://www.blender3darchitect.com/?p=715#comment-7108 It seems that if there are visually overlapping "flat-trees", for example a row beside the road. There will be artifacts like that one - http://img22.imageshack.us/i/yafaray20090910145524.png/ And the only way to solve them out is to increase raydepht. So it will be more rays then overlapping cases. But still, great tutorial. It seems that if there are visually overlapping “flat-trees”, for example a row beside the road. There will be artifacts like that one – http://img22.imageshack.us/i/yafaray20090910145524.png/

And the only way to solve them out is to increase raydepht. So it will be more rays then overlapping cases.

But still, great tutorial.

]]> By: sfepa http://www.blender3darchitect.com/2009/09/how-to-render-alpha-maps-in-blender-3d-and-yafaray-for-architecture/comment-page-1/#comment-7107 sfepa Thu, 10 Sep 2009 06:28:26 +0000 http://www.blender3darchitect.com/?p=715#comment-7107 i think it is necessary to say that you have to increase ray depth value in render settings to avoid problems with visibility of the base planes when they are overlapping each other or reflecting in the glass. i think it is necessary to say that you have to increase ray depth value in render settings to avoid problems with visibility of the base planes when they are overlapping each other or reflecting in the glass.

]]>