Screenshots<\/h2>\n
Here’s my orc (a test avatar I already had) sitting on top of a building:<\/p>\n
We use Unity’s “GetComponent [csharp] \tpublic void Start() I want the DarkVision to be significantly less perfect than daylight vision, so let’s add a simple vignette (Unity has downloadable examples of this shader in their docs, but I only found it after I’d got mine working!).<\/p>\n This took me a long time to get working, just to get accurate screen-positions of shader pixels – so much of Unity’s semi-proprietary Shader language is still undocumented, after many years. I knew all the maths, and had implemented the effect in OpenGL \/ GLSL in minutes, but it took an hour or so in Unity. And once it was working, I got sidetracked in tweaking the exact curve of darkness of vignette.<\/p>\n This was easy – simply average the r\/g\/b components of your Color, somethign like:<\/p>\n [c] I had some problems with this:<\/p>\n Here’s some of the things I tried and discarded. Note how the screenshots are from many positions – I ran around a lot, testing how effective the different shaders were for hunting a quarry (or fleeing an angry mob of AI’s).<\/p>\n![\"Screen](\"http:\/\/t-machine.org\/wp-content\/uploads\/Screen-Shot-2016-01-19-at-03.23.56.png\")
<\/a><\/p>\nStep 1: cancel the lighting<\/h3>\n
\n\t[ContextMenu("Enable dark vision")]
\n\tpublic Shader shaderDarkVision;<\/p>\n
\n\t{
\n\t\tif( shaderDarkVision == null )
\n\t\t\tshaderDarkVision = Shader.Find("Unlit\/Texture");
\n\t}
\n\tpublic void EnableDarkVision()
\n\t{
\n\t\tGetComponent<Camera>().SetReplacementShader( shaderDarkVision, "" );
\n\t}
\n[\/csharp]<\/p>\n<\/a><\/p>\nStep2: Add a vignette to nerf it<\/h3>\n
<\/a><\/p>\nStep3: Convert to grayscale (infravision should be colourblind)<\/h3>\n
\navg = (color.r + color.g + color.b ) \/ 3f;
\ncolor = float4( avg, avg, avg, color.a );
\n[\/c]<\/p>\n<\/a><\/p>\nStep 4: several hours of experimenting with wild effects<\/h3>\n
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