Fixed attentuation issue in MP vert shader.

jasonbeverage · jasonbeverage · commit 25ce0e1b7a47 · 2015-07-30T12:53:25.000-04:00
diff --git a/src/osgEarthDrivers/engine_mp/MPEngine.vert.view.glsl b/src/osgEarthDrivers/engine_mp/MPEngine.vert.view.glsl
@@ -13,7 +13,7 @@ varying float oe_layer_rangeOpacity;
 
 void oe_mp_vertView(inout vec4 vertexView)
 {
-    float range = -vertexView.z;
+    float range = max(-vertexView.z, 0.0);
 
     float attenMin    = oe_layer_minRange - oe_layer_attenuationRange;
     float attenMax    = oe_layer_maxRange + oe_layer_attenuationRange;

Original file line number	Diff line number	Diff line change
`@@ -13,7 +13,7 @@ varying float oe_layer_rangeOpacity;`
`13`	`13`
`14`	`14`	`void oe_mp_vertView(inout vec4 vertexView)`
`15`	`15`	`{`
`16`		`- float range = -vertexView.z;`
	`16`	`+ float range = max(-vertexView.z, 0.0);`
`17`	`17`
`18`	`18`	`float attenMin = oe_layer_minRange - oe_layer_attenuationRange;`
`19`	`19`	`float attenMax = oe_layer_maxRange + oe_layer_attenuationRange;`