Variable volumetricFogMeshVertexShaderConst
volumetricFogMeshVertexShader: "\n varying vec3 vWorldPosition;\n varying vec3 vViewDirection;\n \n void main() {\n vec4 worldPos = modelMatrix * vec4(position, 1.0);\n vWorldPosition = worldPos.xyz;\n vViewDirection = normalize(worldPos.xyz - cameraPosition);\n gl_Position = projectionMatrix * modelViewMatrix * vec4(position, 1.0);\n }\n" = ...