shaders needed for night vision demo

shaders/night_vision.fs

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+precision mediump float;
+
+uniform sampler2D tex0;
+uniform sampler2D tex1;
+uniform sampler2D tex2;
+uniform vec3 unib[4];
+// see docstring Buffer
+uniform vec3 unif[20];
+// 16,0 is time
+// 16,1 is luminance threshold
+// 16,2 is luminance applificaiton
+
+varying vec2 texcoordout;
+varying float dist;
+
+
+
+void main(void) {
+  vec2 uv;
+  uv.x = 0.4 * sin(unif[16][0] * 50.0);
+  uv.y = 0.4 * cos(unif[16][0] * 50.0);
+  float m = 1.0 - texture2D(tex1, texcoordout).a;
+  vec3 n = texture2D(tex2, texcoordout * 3.5 + uv).rgb;
+  vec3 c = texture2D(tex0, texcoordout + n.rg * 0.005).rgb;
+
+  float lum = dot(vec3(0.30, 0.59, 0.11), c);
+  if (lum < unif[16][1]) {
+    c *= unif[16][2];
+  }
+
+  vec3 visionColor = vec3(0.1, 0.95, 0.2);
+  gl_FragColor.rgb = (c + n * 0.2) * visionColor * m;
+
+  gl_FragColor.a = unif[5][2];
+}
+
+

shaders/night_vision.vs

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+precision mediump float;
+
+attribute vec3 vertex;
+attribute vec3 normal;
+attribute vec2 texcoord;
+
+uniform mat4 modelviewmatrix[3]; // [0] model movement in real coords, [1] in camera coords, [2] camera at light
+uniform vec3 unib[4];
+//uniform float ntiles => unib[0][0]
+//uniform vec2 umult, vmult => unib[2]
+//uniform vec2 u_off, v_off => unib[3]
+uniform vec3 unif[20];
+//uniform vec3 eye > unif[6]
+//uniform vec3 lightpos > unif[8]
+
+varying vec2 texcoordout;
+varying float dist;
+
+void main(void) {
+  texcoordout = texcoord * unib[2].xy + unib[3].xy;
+  gl_Position = modelviewmatrix[1] * vec4(vertex,1.0);
+  dist = gl_Position.z;
+  gl_PointSize = unib[2][2] / dist;
+}