Particles todo item: particle textures

* Effecting particle properties with textures was possible in 2.49,
  but not in 2.5 anymore.
* Now particles have their own textures (available in texture panel
  for objects with particle systems), which are totally separate from
  the material textures.
* Currently a basic set of particle properties is available for
  texture control. Some others could still be added, but the whole
  system is not intended as an "change anything with a texture" as
  this kind of functionality will be provided with node particles in
  the future much better.
* Combined with the previously added "particle texture coordinates"
  this new functionality also solves the problem of animating particle
  properties through the particle lifetime nicely.
* Currently the textures only use the intensity of the texture in
  "multiply" blending mode, so in order for the textures to effect
  a particle parameter there has to be a non-zero value defined for
  the parameter in the particle settings. Other blend modes can be
  added later if they're considered useful enough.

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/makesdna/DNA_texture_types.h b/source/blender/makesdna/DNA_texture_types.h
index 41eebca821c..c345eb34133 100644
--- a/source/blender/makesdna/DNA_texture_types.h
+++ b/source/blender/makesdna/DNA_texture_types.h
@@ -77,9 +77,9 @@ typedef struct MTex {
 	float densfac, scatterfac, reflfac;
 
 	/* particles */
-	float timefac, lengthfac, clumpfac;
-	float kinkfac, roughfac, padensfac;
-	float lifefac, sizefac, ivelfac, pvelfac;
+	float timefac, lengthfac, clumpfac, dampfac;
+	float kinkfac, roughfac, padensfac, gravityfac;
+	float lifefac, sizefac, ivelfac, fieldfac;
 
 	/* lamp */
 	float shadowfac;