/* vi: set ft=glsl */
#ifdef USE_TEXMAP
uniform sampler2D texmap;
#endif
uniform sampler2D lightmap;
#ifdef USE_MIRROR
uniform sampler2D mirrortex;
uniform vec2 mirtex_offs;
uniform vec2 mirtex_scale;
uniform float reflectivity;
#endif

void main()
{
	vec3 lumel = texture2D(lightmap, gl_TexCoord[1].st).rgb;

#ifdef USE_TEXMAP
	vec3 texel = texture2D(texmap, gl_TexCoord[0].st).rgb;
	vec3 ambient = gl_LightModel.ambient.rgb * texel;
	vec3 diffuse = lumel * texel * 1.8;
#else
	vec3 ambient = gl_LightModel.ambient.rgb * gl_FrontMaterial.diffuse.rgb;
	vec3 diffuse = gl_FrontMaterial.diffuse.rgb * lumel * 1.8;
#endif

#ifdef USE_MIRROR
	vec3 refl = texture2D(mirrortex, (gl_FragCoord.xy + mirtex_offs) * mirtex_scale).rgb;
	diffuse += refl * reflectivity;	// just add it to diffuse until we get another source of specularity
#endif

	gl_FragColor.rgb = ambient + diffuse;
	gl_FragColor.a = gl_FrontMaterial.diffuse.a;
}