koobas.hobune.stream
ToonShader offset and Camera fov
Hey guys, I'm aplying a camera zoom (making fov smaller) to my game, but the toonshader offset, responsible for drawing the outline, gets very thick related to the the rest of objects in scene.
The offset isn't related with the fov, it's always the same. So when it gets a closer look, obviously it seems thicker.
So, I was wondering if someone had a problem like that and/or have a tip/idea or workaround to solve this problem.
Hey Matthew,
I solved the problem using Shader.SetGlobalFloat("_CAMERA_FOV", Camera.fov); with that I could access the fov in shader and fix the offset value. basically I'm using this:
....
uniform float _CAMERA_FOV = 60.0f;
...
float2 offset = TransformViewToProjection(norm.xy) * _CAMERA_FOV/60.0f;
but it's probably too primitive, I'll sophisticate it a little bit later.
I don't know the toon shader very well, if you can access the outline variable in a script you can tie it to the distance from the camera object.
If the camera only follows one object, give it its own material or this will affect all objects with the same material.
the script could look something like
var camera : Camera;
var toonShader : ToonShader;
function Update(){
toonShader.lineWidthOrWhateverTheVariableNameIs =
(camera.transform.position - toonShader.transform.position).magnitude * scaler;
}
Hey Matthew, thanks for the reply. That's a good idea, it has a property called outLineWidth. I'll try that, but first I'm thinking about a solution within the shader code. I have many cameras, and I think that getting the fov from camera in shader would be more perfomatic
is camera.fov accessible from shader as $$anonymous$$VP matrix? or do I have to set it via script?
Heres an example of the problem
Hey wr_uk,
you have to paste that code in the shader code.
the Shader.SetGlobalFloat("_CAMERA_FOV", Camera.fov); code you put where you're changing the camera.fov
Thanks for the reply zpinner.
I'm a bit lost when it comes to code. I'm not sure what you mean by code you put where you're changing the camera.fov
so here the toon shader code.
Shader "Toon/Lighted Outline" { Properties { _Color ("$$anonymous$$ain Color", Color) = (0.5,0.5,0.5,1) _OutlineColor ("Outline Color", Color) = (0,0,0,1) Outline ("Outline width", Range (.002, 0.03)) = .005 $$anonymous$$ainTex ("Base (RGB)", 2D) = "white" {} _Ramp ("Toon Ramp (RGB)", 2D) = "gray" {} }
SubShader { Tags { "RenderType"="Opaque" } UsePass "Toon/Lighted/FORWARD" UsePass "Toon/Basic Outline/OUTLINE" }
Fallback "Toon/Lighted" }
where exactly do I paste it?
