HDR: Override the swapchain?

Hi I'm new to Reshade and am trying to figure out how to port a HDR shader of mine from RetroArch to Reshade.

Essentially when I find a SDR output game is using a RGBA8 swapchain I'd like to override it with Reshade to use a HDR swapchain say R10G10B10A2 and set the accompanying metadata.

Then my shader will just do a simple reverse Reinhard tonemap and conversion to HDR10 colour space (I can take care of this part).

So is this possible with Reshade? I note a lot of comments about Special K doing it but I'm not sure of the relationship between the two. Effectively I want to do a poor man's AutoHDR. This isn't my direct goal just to add.

Anyway is this possible with Reshade i.e can I just set my techniques last pass's rendertarget to a R10B10G10A2 texture format and I'm good to go?

In theory, with the new plugin architecture, maybe - you'll have to write some C++. In practice it won't be easy and may need per-game tweaking to work. The game will have a whole chain of shaders that might need modifying. I think R16G16B16A16 be easier than R10G10B10A2 (the game might be using that 8bit A channel for somethign internally).

github.com/crosire/reshade/tree/main/examples

Great stuff thanks, so I guess it's not available out of the box. I'll have a look at adding it either as an add on or directly in Reshade itself. I'll start with the add-on functionality to see if it's possible before resorting to messing directly with the core.

Just to say the add-on functionality looks like it's got everything I need. I've created the DLL and done a lot of the stuff I wanted so I'm all good to go.

One question can you get a .FX or .ini file to load an add-on automatically? I want the .addon in the same directory as the FX file and presets to be loaded and the user not have to set that up separately.

I don't think so. You could do anything from the dll though so that could load or enable the .fx file.

rj200 wrote:

I don't think so. You could do anything from the dll though so that could load or enable the .fx file.

That's right. We can try  we become what we behold