SimSun Shader - Simulated directional light for models

[Graf Zahl]

2) The physical correct falloff is actually not to convert it to an angle. Light level should be "float lightLevel = clamp(dot(l,n), 0.0, 1.0);".

For a case like this, where it's only supposed to improve contrast, wouldn't it make sense to keep a certain amount of ambient light?, e.g.

float lightLevel = 0.4 + 0.6 * clamp(dot(l,n), 0.0, 1.0);

?

[Cherno]

Thanks for the suggestions and help. If the shader is improved in any way by it, I am more than willing to change the code

[dpJudas]

For a case like this, where it's only supposed to improve contrast, wouldn't it make sense to keep a certain amount of ambient light?, e.g.

float lightLevel = 0.4 + 0.6 * clamp(dot(l,n), 0.0, 1.0);

?

Yes, it would.

Overall doing this in the material shader is problematic anyway as it changes the base color that then in turn is used by dynamic lights. I created a lightlevelcontrast branch that does it at right point in the fragment shader. Currently it is applying it to everything (so walls and flats, too), but both contrast strength and which object types we want to apply it to could be configurable by changing the strength variable to an uniform. Or the uniform could be controlled by the texture, like the SimSun Shader is doing.

[Cherno]

Update:
SimSun 1.1
Corrected the lightdir shader variable so it now doesn't need an inverted z value.
Shifted the light level by 0.25 to lessen the amount of extremely dark areas.
Added a cube model to the TESTMAP.

See first post for the latest version.

[3336655445]

stupid question: is this mod (?) working fine with LZDoom?
edit answer: yes it works with LZDoom

[Kizoky]

I finally got tired of .bat files, so I wrote a program in C# for use with this shader:
https://github.com/Kizoky/simsun_output_gen

[Enjay]

I tried this by the drag-drop method and there was no output (in fact, Windows Explorer hung the first time that I tried and I had to reboot). After restarting, several tries with several different files didn't seem to be generating anything.

So I went to the command prompt and typed simsungen and got:

Code: Select all • Expand view

A fatal error occurred. The required library hostfxr.dll could not be found.
If this is a self-contained application, that library should exist in [C:\Users\[username]\AppData\Local\Temp\.net\SimSunGen\c23qeulz.eur\].
If this is a framework-dependent application, install the runtime in the global location [C:\Program Files (x86)\dotnet] or use the DOTNET_ROOT(x86) environment variable to specify the runtime location or register the runtime location in [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation].

The .NET Core runtime can be found at:
  - https://aka.ms/dotnet-core-applaunch?missing_runtime=true&arch=x86&rid=win10-x86

[Kizoky]

I tried this by the drag-drop method and there was no output (in fact, Windows Explorer hung the first time that I tried and I had to reboot). After restarting, several tries with several different files didn't seem to be generating anything.

So I went to the command prompt and typed simsungen and got:

Code: Select all • Expand view

A fatal error occurred. The required library hostfxr.dll could not be found.
If this is a self-contained application, that library should exist in [C:\Users\[username]\AppData\Local\Temp\.net\SimSunGen\c23qeulz.eur\].
If this is a framework-dependent application, install the runtime in the global location [C:\Program Files (x86)\dotnet] or use the DOTNET_ROOT(x86) environment variable to specify the runtime location or register the runtime location in [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation].

The .NET Core runtime can be found at:
  - https://aka.ms/dotnet-core-applaunch?missing_runtime=true&arch=x86&rid=win10-x86

Uh oh
Do you use Windows 10 or some earlier OS?

edit: nevermind, I know what's the issue here

[Enjay]

Windows 10 Pro 64-bit - fully updated.

[Kizoky]

Windows 10 Pro 64-bit - fully updated.

Could you please go here (https://github.com/Kizoky/simsun_output ... es/tag/1.1) and download SimSunGen_L.exe ?
It seems I totally forgot how .NET apps work, with that app it should now work fine, ofc with the downside that it's file size is now much bigger

edit:
Above link is dead, use this: https://github.com/Kizoky/GLDEFGenerato ... s/tag/v1.0

[Enjay]

That works, thank you kindly.