shader and things

resource/shadow.vs

@@ -0,0 +1,24 @@
+#version 110
+
+varying vec4 shadow;
+ 
+void main(void){
+	vec3 position = vec3(gl_ModelViewMatrix * gl_Vertex);
+	vec3 normal = normalize(gl_NormalMatrix * gl_Normal);
+	vec3 light = normalize(gl_LightSource[0].position.xyz - position);
+	float diffuse = dot(light, normal);
+	
+	gl_FrontColor = gl_LightSource[0].ambient * gl_Color;
+	shadow = gl_FrontColor;
+	if (diffuse > 0.0){
+		vec3 view = normalize(position);
+		vec3 halfway = normalize(light - view);
+		float specular = pow(max(dot(normal, halfway), 0.0), gl_FrontMaterial.shininess);
+		vec4 temp = gl_LightSource[0].diffuse * gl_Color * diffuse;
+		shadow += temp * 0.2;
+		gl_FrontColor += temp + gl_FrontLightProduct[0].specular * specular;
+	}
+	
+	gl_TexCoord[0] = gl_TextureMatrix[0] * gl_ModelViewMatrix * gl_Vertex;
+	gl_Position = ftransform();
+}