From 28cbb759f08be87d532615e217743788e8532ef9 Mon Sep 17 00:00:00 2001
From: Igor Dykhta <igorDykhta@users.noreply.github.com>
Date: Wed, 3 Aug 2022 19:03:36 +0300
Subject: [PATCH] update shader modifications for deck 8.4.16 (#1892)

Signed-off-by: Ihor Dykhta <dikhta.igor@gmail.com>
---
 .../src/line-layer/line-layer.ts              | 24 +++++++++++--------
 1 file changed, 14 insertions(+), 10 deletions(-)

diff --git a/src/deckgl-layers/src/line-layer/line-layer.ts b/src/deckgl-layers/src/line-layer/line-layer.ts
index d7ce09c4dd..537354b497 100644
--- a/src/deckgl-layers/src/line-layer/line-layer.ts
+++ b/src/deckgl-layers/src/line-layer/line-layer.ts
@@ -58,18 +58,22 @@ function addElevationScale(vs) {
     elevationVs,
     'line elevation scale 2 vs - multiply by elevation scale',
     `geometry.worldPosition = instanceSourcePositions;
-  geometry.worldPositionAlt = instanceTargetPositions;
+  geometry.worldPositionAlt = instanceTargetPositions;`,
+    `vec3 source_world = instanceSourcePositions;
+     vec3 target_world = instanceTargetPositions;
+     source_world.z *= elevationScale;
+     target_world.z *= elevationScale;
+     
+     geometry.worldPosition = source_world;
+     geometry.worldPositionAlt = target_world;`
+  );
 
-  vec3 source_world = instanceSourcePositions;
-  vec3 target_world = instanceTargetPositions;`,
+  elevationVs = editShader(
+    elevationVs,
+    'line elevation scale 3 vs',
     `vec3 source_world = instanceSourcePositions;
-    vec3 target_world = instanceTargetPositions;
-    source_world.z *= elevationScale;
-    target_world.z *= elevationScale;
-  
-    geometry.worldPosition = source_world;
-    geometry.worldPositionAlt = target_world;
-  `
+  vec3 target_world = instanceTargetPositions;`,
+    ''
   );
 
   return elevationVs;