Merge pull request #11798 from CesiumGS/webgl1-parameter-qualifiers

Fix demodernizeShader to preserve parameter qualifiers

Author: ggetz

CHANGES.md

@@ -1,5 +1,13 @@
 # Change Log
 
+### 1.115 - 2024-03-01
+
+#### @cesium/engine
+
+##### Fixes :wrench:
+
+- Fixed a bug affecting voxel shader compilation in WebGL1 contexts. [#11798](https://github.com/CesiumGS/cesium/pull/11798)
+
 ### 1.114 - 2024-02-01
 
 #### @cesium/engine

packages/engine/Source/Renderer/demodernizeShader.js

@@ -26,7 +26,10 @@ function demodernizeShader(input, isFragmentShader) {
 
   if (isFragmentShader) {
     // Replace the in with varying.
-    output = output.replaceAll(/(in)\s+(vec\d|mat\d|float)/g, `varying $2`);
+    output = output.replaceAll(
+      /\n\s*(in)\s+(vec\d|mat\d|float)/g,
+      `\nvarying $2`
+    );
 
     if (/out_FragData_(\d+)/.test(output)) {
       output = `#extension GL_EXT_draw_buffers : enable\n${output}`;