From 65b7cff6100a570b9b13be8391e495bd957560ce Mon Sep 17 00:00:00 2001
From: hpinkos <pinkos.hannah@gmail.com>
Date: Mon, 18 Jun 2018 16:33:49 -0400
Subject: [PATCH] cleanup

---
 Source/Shaders/BillboardCollectionFS.glsl |  5 ++---
 Source/Shaders/BillboardCollectionVS.glsl | 19 ++-----------------
 2 files changed, 4 insertions(+), 20 deletions(-)

diff --git a/Source/Shaders/BillboardCollectionFS.glsl b/Source/Shaders/BillboardCollectionFS.glsl
index 2aa8c03e6e50..d38c5406bd7b 100644
--- a/Source/Shaders/BillboardCollectionFS.glsl
+++ b/Source/Shaders/BillboardCollectionFS.glsl
@@ -11,7 +11,6 @@ varying vec4 v_color;
 #ifdef CLAMP_TO_GROUND
 varying vec4 v_textureCoordinateBounds;                  // the min and max x and y values for the texture coordinates
 varying vec4 v_originTextureCoordinateAndTranslate;      // texture coordinate at the origin, billboard translate (used for label glyphs)
-varying vec4 v_leftAndRightTextureCoordinate;            // texture coordinates for left and right depth test
 varying vec4 v_dimensionsAndImageSize;                   // dimensions of the bounding rectangle and the size of the image.  The values will only be different for label glyphs
 varying vec2 v_eyeDepthAndDistance;                      // The depth of the billboard and the disable depth test distance
 
@@ -88,10 +87,10 @@ void main()
         // negative values go into the screen
         if (globeDepth1 != 0.0 && globeDepth1 > epsilonEyeDepth)
         {
-            float globeDepth2 = getGlobeDepth(adjustedST, v_leftAndRightTextureCoordinate.xy);
+            float globeDepth2 = getGlobeDepth(adjustedST, vec4(0.0, 1.0)); // top left corner
             if (globeDepth2 != 0.0 && globeDepth2 > epsilonEyeDepth)
             {
-                float globeDepth3 = getGlobeDepth(adjustedST, v_leftAndRightTextureCoordinate.zw);
+                float globeDepth3 = getGlobeDepth(adjustedST, vec4(1.0, 1.0)); // top right corner
                 if (globeDepth3 != 0.0 && globeDepth3 > epsilonEyeDepth)
                 {
                     discard;
diff --git a/Source/Shaders/BillboardCollectionVS.glsl b/Source/Shaders/BillboardCollectionVS.glsl
index dd5f7c60a19c..e046ac8b9c31 100644
--- a/Source/Shaders/BillboardCollectionVS.glsl
+++ b/Source/Shaders/BillboardCollectionVS.glsl
@@ -21,7 +21,6 @@ varying vec2 v_textureCoordinates;
 #ifdef CLAMP_TO_GROUND
 varying vec4 v_textureCoordinateBounds;
 varying vec4 v_originTextureCoordinateAndTranslate;
-varying vec4 v_leftAndRightTextureCoordinate;
 varying vec4 v_dimensionsAndImageSize;
 varying vec2 v_eyeDepthAndDistance;
 #endif
@@ -160,28 +159,14 @@ void main()
     translate.y += (temp - floor(temp)) * SHIFT_LEFT8;
     translate.y -= UPPER_BOUND;
 
-    v_originTextureCoordinateAndTranslate.zw = translate.xy;
-
     temp = compressedAttribute1.x * SHIFT_RIGHT8;
 
     vec2 imageSize = vec2(floor(temp), compressedAttribute2.w);
 
 #ifdef CLAMP_TO_GROUND
-    v_textureCoordinateBounds = textureCoordinateBounds;
     v_originTextureCoordinateAndTranslate.xy = vec2(1.0) - depthOrigin; //the origin
-    if (v_originTextureCoordinateAndTranslate.y == 1.0) //vertical origin is top
-    {
-        v_leftAndRightTextureCoordinate = vec4(0.0, 0.0, 1.0, 0.0); //bottom left, bottom right
-    }
-    else
-    {
-        if (v_originTextureCoordinateAndTranslate.y == 0.0)
-        {
-            v_originTextureCoordinateAndTranslate.y = 0.1;
-        }
-
-        v_leftAndRightTextureCoordinate = vec4(0.0, 1.0, 1.0, 1.0); //top left, top right
-    }
+    v_originTextureCoordinateAndTranslate.zw = translate.xy;
+    v_textureCoordinateBounds = textureCoordinateBounds;
 
     temp = compressedAttribute3.w;
     temp = temp * SHIFT_RIGHT12;