Vertex shader:
#version 120

void main()
{
    float m;
    vec3 r;
    vec4 ec_pos = gl_ModelViewMatrix * gl_Vertex;
    gl_Position = gl_ProjectionMatrix * ec_pos;
    ec_pos /= ec_pos.w;
    vec3 normal = normalize(gl_NormalMatrix * gl_Normal);
    vec3 ambient = gl_LightModel.ambient.xyz;
    vec3 diffuse = vec3(0.0);
    vec4 specular = vec4(0.0);
    vec3 dir, dst;
    float att, t;
    gl_FrontColor.xyz = gl_FrontMaterial.ambient.xyz * ambient + gl_FrontMaterial.diffuse.xyz * diffuse + gl_FrontMaterial.emission.xyz;
    gl_FrontColor.w = gl_FrontMaterial.diffuse.w;
    gl_FrontSecondaryColor = gl_FrontMaterial.specular * specular;
    gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
    gl_TexCoord[1] = gl_TextureMatrix[1] * gl_MultiTexCoord1;
    gl_TexCoord[2] = gl_TextureMatrix[2] * gl_MultiTexCoord2;
    gl_TexCoord[3] = gl_TextureMatrix[3] * gl_MultiTexCoord3;
    gl_TexCoord[4] = gl_TextureMatrix[4] * gl_MultiTexCoord4;
    gl_TexCoord[5] = gl_TextureMatrix[5] * gl_MultiTexCoord5;
    gl_TexCoord[6] = gl_TextureMatrix[6] * gl_MultiTexCoord6;
    gl_TexCoord[7] = gl_TextureMatrix[7] * gl_MultiTexCoord7;
    gl_FogFragCoord = ec_pos.z;
}

fragment shader:
#version 120
vec4 tmp0, tmp1;
vec4 ret;
vec4 arg0, arg1, arg2;
uniform sampler2D ps_sampler0;
vec4 tex0;
uniform sampler2D ps_sampler1;
vec4 tex1;
uniform vec4 specular_enable;
void main()
{
    tex0 = clamp(texture2D(ps_sampler0, gl_TexCoord[0].xy), 0.0, 1.0);
    tex1 = clamp(texture2D(ps_sampler1, gl_TexCoord[1].xy), 0.0, 1.0);
    ret.xyz = tex0.xyz;
    ret.w = gl_Color.w;
    ret.xyz = clamp(tex1.xyz + ret.xyz, 0.0, 1.0);
    ret.xyz = clamp(ret.xyz + gl_Color.xyz, 0.0, 1.0);
    gl_FragData[0] = gl_SecondaryColor * specular_enable + ret;
    float Fog = (gl_Fog.end - gl_FogFragCoord) / (gl_Fog.end - gl_Fog.start);
    gl_FragData[0].xyz = mix(gl_Fog.color.xyz, gl_FragData[0].xyz, clamp(Fog, 0.0, 1.0));
}