[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [17454] branches/sim_physics/source/ blender/render/intern/source/volumetric.c: Volume rendering:

[Matt Ebb]

Revision: 17454
          http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=17454
Author:   broken
Date:     2008-11-14 07:01:06 +0100 (Fri, 14 Nov 2008)

Log Message:
-----------
Volume rendering:

* Use a slightly better (but still not exact) approximation for the view
vector when pre-shading the light cache. This still doesn't give exactly the
same results as non-light-cache shading, but it's better. Will investigate
getting a better view vector when there's more time - or if anyone has a
simple formula to derive shi->view from shi->co that would be great to 
hear about too :)

Modified Paths:
--------------
    branches/sim_physics/source/blender/render/intern/source/volumetric.c

Modified: branches/sim_physics/source/blender/render/intern/source/volumetric.c
===================================================================
--- branches/sim_physics/source/blender/render/intern/source/volumetric.c	2008-11-14 04:07:47 UTC (rev 17453)
+++ branches/sim_physics/source/blender/render/intern/source/volumetric.c	2008-11-14 06:01:06 UTC (rev 17454)
@@ -984,7 +984,7 @@
 			
 			for (z=0; z < res; z++) {
 				co[2] = bbmin[2] + (voxel[2] * z);
-			
+				
 				time= PIL_check_seconds_timer();
 				i++;
 			
@@ -1012,6 +1012,9 @@
 					obi->volume_precache[2*res_3 + x*res_2 + y*res + z] = -1.0f;
 					continue;
 				}
+				
+				VECCOPY(shi.view, co);
+				Normalize(shi.view);
 				density = vol_get_density(&shi, co);
 				vol_get_scattering(&shi, scatter_col, co, stepsize, density);