vertex_shader
	"varying vec2 texcoord;
	varying vec3 shadowcoord;
	varying vec3 normal;
	
	void main()
	{
		gl_Position = ftransform();
		texcoord = gl_MultiTexCoord0.xy;
		vec4 eye_pos = gl_ModelViewMatrix*gl_Vertex;
		shadowcoord = vec3(dot(gl_EyePlaneS[3], eye_pos), dot(gl_EyePlaneT[3], eye_pos), dot(gl_EyePlaneR[3], eye_pos));
		normal = normalize(gl_NormalMatrix*gl_Normal);
	}";

fragment_shader
	"uniform sampler2D texture;
	uniform sampler2DShadow shadow;
	varying vec2 texcoord;
	varying vec3 shadowcoord;
	varying vec3 normal;

	void main()
	{
		float diffuse = max(dot(gl_LightSource[0].position.xyz, normal), 0.0);
		vec4 color = texture2D(texture, texcoord);
		gl_FragColor = vec4((0.3+diffuse*0.7*shadow2D(shadow, shadowcoord).r)*color.rgb, color.a);
	}";