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

2015-12-04 11:50:32 +00:00
parent edfd396059
commit 6ab9283a18
13 changed files with 92 additions and 46 deletions
--- a/qglview/shaders/selection.vert
+++ b/qglview/shaders/selection.vert
@@ -1,5 +1,14 @@
 #version 150

+out float logz;
+
+uniform float z_near, z_far;
+
+const float C = 0.0001;
+float FC = 1. / log(z_far * C + 1.);
+
 void main(void) {
-	gl_Position = qgl_ftransform();
+	vec4 pos = qgl_ftransform();
+	logz = log(pos.w * C + 1.) * FC;
+	gl_Position = pos;
 }