qUINT_dof.fx 'integral literal', expected 'identifier' with ReShade 5.3.0

[gamelover42]

I'm trying to get ReShade working for Fallout 4. I see this in the reshade log file (attached). My first thought was file encoding but the file is UTF-8 (no BOM):

11:54:43:427 [42644] | ERROR | Failed to compile "D:\Program Files (x86)\SteamLibrary\SteamApps\common\Fallout 4\reshade-shaders\Shaders\qUINT\qUINT_dof.fx": D:\Program Files (x86)\SteamLibrary\SteamApps\common\Fallout 4\reshade-shaders\Shaders\qUINT\qUINT_dof.fx(148, 13): error X3000: syntax error: unexpected 'integral literal', expected 'identifier' D:\Program Files (x86)\SteamLibrary\SteamApps\common\Fallout 4\reshade-shaders\Shaders\qUINT\qUINT_dof.fx(150, 1): error X3000: syntax error: unexpected 'identifier' D:\Program Files (x86)\SteamLibrary\SteamApps\common\Fallout 4\reshade-shaders\Shaders\qUINT\qUINT_dof.fx(151, 1): error X3000: syntax error: unexpected 'identifier' D:\Program Files (x86)\SteamLibrary\SteamApps\common\Fallout 4\reshade-shaders\Shaders\qUINT\qUINT_dof.fx(152, 1): error X3000: syntax error: unexpected 'identifier' D:\Program Files (x86)\SteamLibrary\SteamApps\common\Fallout 4\reshade-shaders\Shaders\qUINT\qUINT_dof.fx(153, 1): error X3000: syntax error: unexpected 'identifier' D:\Program Files (x86)\SteamLibrary\SteamApps\common\Fallout 4\reshade-shaders\Shaders\qUINT\qUINT_dof.fx(154, 1): error X3000: syntax error: unexpected 'identifier' D:\Program Files (x86)\SteamLibrary\SteamApps\common\Fallout 4\reshade-shaders\Shaders\qUINT\qUINT_dof.fx(155, 1): error X3000: syntax error: unexpected '>'

ReShade.log