git-svn-id: svn://db.shs.com.ru/libs@59 a8b55f48-bf90-11e4-a774-851b48703e85

qglview/shaders/dsl_pass_0.vert

@@ -2,13 +2,17 @@
 
 out vec3 src_normal, normal, binormal;//, et;
 out vec4 pos, ppos;
-out float fogCoord, fs_gid;
+out float fogCoord, logz;
 out mat3 TBN;
 
 uniform bool acc_fog;
 uniform vec2 dt;
 uniform vec3 eye;
 uniform mat4 prev_ModelViewProjectioMatrix;
+uniform float z_near, z_far;
+
+const float C = 0.0001;
+float FC = 1. / log(z_far * C + 1.);
 
 void main(void) {
 	normal = qgl_Normal;//(qgl_NormalMatrix * qgl_Normal);
@@ -33,5 +37,11 @@ void main(void) {
 	//speed /= (abs(speed) + 1.);
 	//speed.xyz *= speed.w;
 	//pos *= pos.w;
+
+	//logz = gl_Position.w*C + 1;  //version with fragment code
+	logz = log(pos.w * C + 1.) * FC;
+	//pos.z = (logz + logz - 1) * pos.w;
+
 	gl_Position = pos;
+
 }