[f=-000001] Synced LuaRules: finished loading
[f=-000001] Unsynced LuaRules: starting loading
[f=-000001] Error: gl.BeginEnd: error(2) = [string "LuaRules/Gadgets/precipitation.lua"]:235: bad argument #2 to 'math_random' ([spring_lua_unsynced_rand(lower, upper)] empty interval)
[f=-000001] Error: gl.CreateList: error(2) = [string "LuaRules/Gadgets/precipitation.lua"]:235: bad argument #2 to 'math_random' ([spring_lua_unsynced_rand(lower, upper)] empty interval)
[f=-000001] Error: gl.BeginEnd: error(2) = [string "LuaRules/Gadgets/precipitation.lua"]:251: bad argument #2 to 'math_random' ([spring_lua_unsynced_rand(lower, upper)] empty interval)
[f=-000001] Error: gl.CreateList: error(2) = [string "LuaRules/Gadgets/precipitation.lua"]:251: bad argument #2 to 'math_random' ([spring_lua_unsynced_rand(lower, upper)] empty interval)
[f=-000001] Error: gl.BeginEnd: error(2) = [string "LuaRules/Gadgets/precipitation.lua"]:267: bad argument #2 to 'math_random' ([spring_lua_unsynced_rand(lower, upper)] empty interval)
[f=-000001] Error: gl.CreateList: error(2) = [string "LuaRules/Gadgets/precipitation.lua"]:267: bad argument #2 to 'math_random' ([spring_lua_unsynced_rand(lower, upper)] empty interval)
>> dualfog vertex shader
>>   varying vec3 eyeDir;

  void main(void)
  {
    gl_TexCoord[0] = gl_MultiTexCoord0;
    eyeDir = gl_MultiTexCoord1.xyz;
    gl_Position = ftransform();
  }

>> dualfog fragment shader:
>> const float fogAtten  = 0.005;float fogHeight = 400;const vec3  fogColor = vec3(0.80000001,0.85000002,0.94999999);  uniform sampler2D tex0;
  uniform float wp11;
  uniform float wp15;
  uniform vec3 eyePos;
  varying vec3 eyeDir;


  void main(void)
  {
    vec2 txcd = vec2(gl_TexCoord[0]);

    float z    = texture2D(tex0, txcd).x;

    float d = wp15 / (((z * 2.0) - 1.0) + wp11);

    vec3 toPoint = (d * eyeDir);
    vec3 worldPos = eyePos + toPoint;

#ifdef DEBUG_GFX // world position debugging
    const float k  = 100.0;
    vec3 debugColor = pow(2.0 * abs(0.5 - fract(worldPos / k)), 6.0);
    gl_FragColor = vec4(debugColor, 1.0);
    return; // BAIL
#endif

//	fogHeight= 255*(time()%5);

    float h0 = clamp(worldPos.y, 0.0, fogHeight);
    float h1 = clamp(eyePos.y,   0.0, fogHeight); // FIXME: uniform ...
    float attenFactor = 1.0 - (0.5 * (h0 + h1) / fogHeight);

    float len = length(toPoint);
    float dist = len * abs((h1 - h0) / toPoint.y); // div-by-zero prob?
    float atten = clamp(1.0 - exp(-dist * attenFactor * fogAtten), 0.0, 1.0);

    gl_FragColor = vec4(fogColor, atten);

    return;
  }

>> Loaded gadget:  Engine Taskbar Stuff  <engine_taskbar_stuff.lua>