* A few volume rendering tweaks:

- modified point density so that it returns a more consistent 
density with regards to search radius. Previously larger radii 
would give much higher density but this is equalised out now.

- Added a new volume material option 'density scale'. This is an 
overall scale multiplier for density, allowing you to (for 
example) crank down the density to a more desirable range if 
you're working at a large physical scale. Volume rendering is 
fundamentally scale dependant so this lets you correct to get the 
right visual result.

- Also tweaked a few constants, old files won't render exactly 
the same, just minor things though.

1 files changed, 1 insertions, 1 deletions

diff --git a/source/blender/makesdna/DNA_material_types.h b/source/blender/makesdna/DNA_material_types.h
index 4e006d17682..3efb8d9c116 100644
--- a/source/blender/makesdna/DNA_material_types.h
+++ b/source/blender/makesdna/DNA_material_types.h
@@ -66,7 +66,7 @@ typedef struct Material {
 	short pad5[3];
 	
 	/* volumetrics */
-	float vol_alphathresh;
+	float vol_density_scale;
 	float vol_stepsize, vol_shade_stepsize;
 	float vol_absorption, vol_scattering;
 	float vol_absorption_col[3];