experimental map shaders

modules/game_shaders/shaders/oldtv.frag

@@ -0,0 +1,24 @@
+uniform float u_Time;
+varying vec2 v_TexCoord;
+uniform sampler2D u_Tex0;
+
+void main(void)
+{
+    vec2 q = v_TexCoord;
+    vec2 uv = 0.5 + (q-0.5)*(0.9 + 0.1*sin(0.2*u_Time));
+
+    vec3 oricol = texture2D(u_Tex0,vec2(q.x,q.y)).xyz;
+    vec3 col = oricol;
+
+    col = clamp(col*0.5+0.5*col*col*1.2,0.0,1.0);
+
+    col *= 0.5 + 0.5*16.0*uv.x*uv.y*(1.0-uv.x)*(1.0-uv.y);
+
+    col *= vec3(0.8,1.0,0.7);
+
+    col *= 0.9+0.1*sin(10.0*u_Time+uv.y*1000.0);
+
+    col *= 0.97+0.03*sin(110.0*u_Time);
+
+    gl_FragColor = vec4(col,1.0);
+}