From 55cdc7680a5eb466c5694ce5aa55e6e63dbffd5e Mon Sep 17 00:00:00 2001
From: Vladimir Agafonkin <agafonkin@gmail.com>
Date: Wed, 19 Apr 2017 15:49:06 +0300
Subject: [PATCH] fix error when switching from DDS to a constant paint value

Makes #3949 less severe (a flash of incorrect value instead of a JS
error).
---
 src/style/style_declaration.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/style/style_declaration.js b/src/style/style_declaration.js
index c7dbb72ed8f..7c99bb44f23 100644
--- a/src/style/style_declaration.js
+++ b/src/style/style_declaration.js
@@ -67,6 +67,7 @@ class StyleDeclaration {
      * @private
      */
     calculateInterpolationT(globalProperties) {
+        if (this.isFeatureConstant || this.isZoomConstant) return 0;
         return this._functionInterpolationT(globalProperties && globalProperties.zoom, {});
     }
 }