Propagate clustered light shader language

Pass material shader language through materials-library clustered light preparation and correct the WebGPU storage-buffer comment.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: Popov72

packages/dev/core/src/Lights/Clustered/clusteredLightContainer.ts

@@ -45,7 +45,7 @@ export class ClusteredLightContainer extends Light {
         if (!caps.texelFetch) {
             return 0;
         } else if (engine.isWebGPU) {
-            // On WebGPU we use atomic writes to storage textures
+            // On WebGPU we use atomic writes to storage buffers
             return 32;
         } else if (engine.version > 1) {
             // On WebGL 2 we use additive float blending as the light mask

packages/dev/materials/src/cell/cellMaterial.ts

@@ -252,6 +252,7 @@ export class CellMaterial extends PushMaterial {
                 samplers: samplers,
                 defines: defines,
                 maxSimultaneousLights: this.maxSimultaneousLights,
+                shaderLanguage: this._shaderLanguage,
             });
             subMesh.setEffect(
                 scene.getEngine().createEffect(

packages/dev/materials/src/fur/furMaterial.ts

@@ -338,6 +338,7 @@ export class FurMaterial extends PushMaterial {
                 samplers: samplers,
                 defines: defines,
                 maxSimultaneousLights: this.maxSimultaneousLights,
+                shaderLanguage: this._shaderLanguage,
             });
 
             subMesh.setEffect(

packages/dev/materials/src/gradient/gradientMaterial.ts

@@ -245,6 +245,7 @@ export class GradientMaterial extends PushMaterial {
                 samplers: samplers,
                 defines: defines,
                 maxSimultaneousLights: 4,
+                shaderLanguage: this._shaderLanguage,
             });
 
             subMesh.setEffect(

packages/dev/materials/src/lava/lavaMaterial.ts

@@ -320,6 +320,7 @@ export class LavaMaterial extends PushMaterial {
                 samplers: samplers,
                 defines: defines,
                 maxSimultaneousLights: this.maxSimultaneousLights,
+                shaderLanguage: this._shaderLanguage,
             });
 
             subMesh.setEffect(

packages/dev/materials/src/mix/mixMaterial.ts

@@ -360,6 +360,7 @@ export class MixMaterial extends PushMaterial {
                 samplers: samplers,
                 defines: defines,
                 maxSimultaneousLights: this.maxSimultaneousLights,
+                shaderLanguage: this._shaderLanguage,
             });
 
             subMesh.setEffect(

packages/dev/materials/src/normal/normalMaterial.ts

@@ -286,6 +286,7 @@ export class NormalMaterial extends PushMaterial {
                 samplers: samplers,
                 defines: defines,
                 maxSimultaneousLights: 4,
+                shaderLanguage: this._shaderLanguage,
             });
 
             subMesh.setEffect(

packages/dev/materials/src/shadowOnly/shadowOnlyMaterial.ts

@@ -233,6 +233,7 @@ export class ShadowOnlyMaterial extends PushMaterial {
                 samplers: samplers,
                 defines: defines,
                 maxSimultaneousLights: 1,
+                shaderLanguage: this._shaderLanguage,
             });
 
             subMesh.setEffect(

packages/dev/materials/src/simple/simpleMaterial.ts

@@ -241,6 +241,7 @@ export class SimpleMaterial extends PushMaterial {
                 samplers: samplers,
                 defines: defines,
                 maxSimultaneousLights: this.maxSimultaneousLights,
+                shaderLanguage: this._shaderLanguage,
             });
             subMesh.setEffect(
                 scene.getEngine().createEffect(

packages/dev/materials/src/terrain/terrainMaterial.ts

@@ -320,6 +320,7 @@ export class TerrainMaterial extends PushMaterial {
                 samplers: samplers,
                 defines: defines,
                 maxSimultaneousLights: this.maxSimultaneousLights,
+                shaderLanguage: this._shaderLanguage,
             });
 
             subMesh.setEffect(