I tried this and I am amazed. I am even more amazed that it still runs at an almost playable fps

This is what I did. You can try this at your own risk as I am taking no responsibility if you screw up your system.

I went to my CVarGroups folder and in there were a bunch of cfg files.

I first made a copy of the entire CVarGroups on my desktop in case I screwed up. I then opened each cfg and made the same edits. You copy the default (4) option which is the first block of text and paste/replace the last block of text with it.

for example the "sys_spec_Particles.cfg"


[default]
; default of this CVarGroup
= 4

e_particles_quality=4
e_particles_lod=1
e_particles_max_emitter_draw_screen=32
r_UseSoftParticles=1
e_water_ocean_soft_particles= 1
e_particles_object_collisions=1

[1]
e_particles_quality=1
e_particles_lod=0.75
e_particles_max_emitter_draw_screen=4
r_UseSoftParticles=0
e_water_ocean_soft_particles=0
e_particles_object_collisions=0

[2]
e_particles_quality=2
e_particles_max_emitter_draw_screen=8

[3]
e_particles_quality=3
e_particles_max_emitter_draw_screen=16

Copy all the red text and paste/replace the blue text with it so it looks like...

[default]
; default of this CVarGroup
= 4

e_particles_quality=4
e_particles_lod=1
e_particles_max_emitter_draw_screen=32
r_UseSoftParticles=1
e_water_ocean_soft_particles= 1
e_particles_object_collisions=1

[1]
e_particles_quality=1
e_particles_lod=0.75
e_particles_max_emitter_draw_screen=4
r_UseSoftParticles=0
e_water_ocean_soft_particles=0
e_particles_object_collisions=0

[2]
e_particles_quality=2
e_particles_max_emitter_draw_screen=8

[3]
e_particles_quality=4
e_particles_lod=1
e_particles_max_emitter_draw_screen=32
r_UseSoftParticles=1
e_water_ocean_soft_particles= 1
e_particles_object_collisions=1


Do this same thing with all the cfg files in the CVarGroups folder. Just remember to BACK UP the old files first!!!!


After I did this I logged back in and all I can say is wow. Thw water is very different and the the tire tracks on the beach are realistic. The depth of view and light beams look very cool as well. Very nice find OP!

I'm going to play the demo all over with this setting now.

Good Luck

We are taking about Crysis here so I will move this topic to the games section.

[3]
e_particles_quality=3
e_particles_max_emitter_draw_screen=16

[3]
e_particles_quality=4
e_particles_lod=1
e_particles_max_emitter_draw_screen=32
r_UseSoftParticles=1
e_water_ocean_soft_particles= 1
e_particles_object_collisions=1

I will try this when I get a chance to install and try the demo. A script can be made to do this automatically if it is worthwhile.
BTW this the topic Title is misleading and untrue, this is not Dirext10 on XP, just enabling some extra DirectX9 features. OK.

For DirectX10 on XP see the Alky project:
http://www.fallingleafsystems.com/compatibility/

My apologies I will change it.