http://www.opengl.org/discussion_boards/ubbthreads.php Developers - OpenGL Shading Language OpenGL.org Discussion and Help Forums - UBB.threads(tm) http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=274109#Post274109 Posted by toneburst:
Thanks for the explanation, mokafolio. Good to see you here, by the way :D a|x]]> Tue, 16 Mar 2010 10:05:38 CDT http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273992#Post273992 Posted by toneburst:
Incidentally, it just occurred to me that, since I'm creating the LUT, I can be sure that alpha will be 1.0, anyway, so I can miss out the unpremultiply in the filter function. I'll still need to do it in the image-lookup though.]]> Mon, 15 Mar 2010 11:23:09 CDT http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273982#Post273982 Posted by Ilian Dinev:
View it like this: A Geom-shader doesn't effectively/actually get triangles as inputs. It gets 1,2,3,4 or 6 vertices as inputs. points: 1 lines: 2 lines_adjacency: 4 triangles: 3 triangles_adjacency: 6 (look at glsl 1.50 spec, page 37) ]]> Mon, 15 Mar 2010 09:05:32 CDT http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273863#Post273863 Posted by Kipt88:
Thanks, that did it.]]> Sat, 13 Mar 2010 08:14:25 CST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273806#Post273806 Posted by typewriter:
Ah ha. That's a simple plain language explanation. But I guess only time will let me get an intuitive understanding of what can be done with it. Your example of an edge detect is helpful. There are really powerful effects that rely on this co]]> Fri, 12 Mar 2010 12:42:55 CST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273647#Post273647 Posted by CBradford:
right. here's the pixel shader. [code] uniform sampler2D NormalHeight; uniform sampler2D Base; uniform sampler2D SpecularMap; uniform float invRad; varying vec3 g_lightVec; varying vec3 g_viewVec; varying vec2 texCoord; void main() ]]> Thu, 11 Mar 2010 00:08:45 CST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273548#Post273548 Posted by Kipt88:
(creating a new thread since the problem no longer fits the title)]]> Tue, 09 Mar 2010 09:08:16 CST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273489#Post273489 Posted by Y-tension:
Actually, this is strange. Shadow buffers (usually) use a world space position transformed to light projection space, but this is calculated per vertex and passed as a texture coordinate. If you want to modify your depth, that means that you modify y]]> Sun, 07 Mar 2010 21:13:42 CST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273461#Post273461 Posted by SimoPI:
LOL you're right. I must set mipmaps. Now it works :P Thank you! ;) ]]> Sat, 06 Mar 2010 18:55:08 CST http://www.opengl.org/discussion_boards/ubbthreads.php?ubb=showflat&Number=273380#Post273380 Posted by Dark Photon:
Ok, thanks guys. I appreciate it. ]]> Thu, 04 Mar 2010 20:31:46 CST