remove superfluous shader varying

CHANGELOG.md

@@ -6,6 +6,8 @@ Note that since we don't clearly distinguish between a public and private interf
 
 ## [Unreleased]
 
+- Fix superfluous shader varying
+
 ## [v3.10.1] - 2022-06-26
 
 - Fix groupCount when updating TextureMesh-based visuals

src/mol-gl/shader/chunks/assign-color-varying.glsl.ts

@@ -72,8 +72,6 @@ export const assign_color_varying = `
 #endif
 
 #ifdef dTransparency
-    vGroup = group;
-
     #if defined(dTransparencyType_groupInstance)
         vTransparency = readFromTexture(tTransparency, aInstance * float(uGroupCount) + group, uTransparencyTexDim).a;
     #elif defined(dTransparencyType_vertexInstance)

src/mol-gl/shader/chunks/color-frag-params.glsl.ts

@@ -47,7 +47,6 @@ uniform float uBumpiness;
 #endif
 
 #ifdef dTransparency
-    varying float vGroup;
     varying float vTransparency;
 #endif
 `;
\ No newline at end of file

src/mol-gl/shader/chunks/color-vert-params.glsl.ts

@@ -75,7 +75,6 @@ uniform float uBumpiness;
 #endif
 
 #ifdef dTransparency
-    varying float vGroup;
     #if defined(dTransparencyType_groupInstance) || defined(dTransparencyType_vertexInstance)
         varying float vTransparency;
         uniform vec2 uTransparencyTexDim;