[Freelancer (2003)] Odd-looking shadow appears when camera moves up/down (D3d8to9 only)

[BC46]

When opening the equipment dealer menu in the video game Freelancer (2003), the camera moves up before the interface appears. Whenever this is done with the D3d8to9 option enabled, an odd-looking shadow appears below the ship. If D3d8to9 is turned off, this doesn't occur.

I've tested this on DxWrapper versions 1.1.6900.22 and 1.1.6972.22; the problem could be seen on both.

D3d8to9 = 1:

d3d8to9_on.mp4

D3d8to9 = 0:

d3d8to9_off.mp4

[elishacloud]

I wonder if this is related to #136.

[BC46]

I'm not entirely sure since presumably the linked issue relates to legacy D3D8, whereas the shadow issue only occurs when converting D3D8 to 9.

[BC46]

I've created a PIX snapshot of the shadow bug while running the game with just d3d8to9 v1.12.0: ShadowBugFreelancerD3d9.zip. Thought it may give some insights into what could cause the bug to occur.

[Squall-Leonhart]

This happens natively too, likely because of the unification of nvidia shadow buffers mentioned in #75 after G80.

I still have functional NV30 hardware on XP where it doesn't occur, but theres a christmas tree set up in front of that old pc right now so getting to it for tracing won't be possible till atleast jan 1st.

FWIW, This game has got a Derferred lighting and shadows mod that replaces all of the borky stuff
https://the-starport.com/forums/topic/4565/freelancer-mod-news-freelancer-gets-true-shadows-to-its-graphics-engine