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@@ -18932,13 +18932,13 @@ class ViewportTextureNode extends TextureNode {
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this.isOutputTextureNode = true;
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/**
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- * The `updateBeforeType` is set to `NodeUpdateType.FRAME` since the node renders the
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- * scene once per frame in its {@link ViewportTextureNode#updateBefore} method.
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+ * The `updateBeforeType` is set to `NodeUpdateType.RENDER` since the node should extract
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+ * the current contents of the bound framebuffer for each render call.
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*
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* @type {string}
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- * @default 'frame'
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+ * @default 'render'
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*/
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- this.updateBeforeType = NodeUpdateType.FRAME;
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+ this.updateBeforeType = NodeUpdateType.RENDER;
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/**
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* The framebuffer texture for the current renderer context.
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@@ -41130,6 +41130,25 @@ const densityFogFactor = Fn( ( [ density ], builder ) => {
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} );
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+/**
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+ * Constructs a new height fog factor node. This fog factor requires a Y-up coordinate system.
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+ *
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+ * @tsl
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+ * @function
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+ * @param {Node} density - Defines the fog density.
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+ * @param {Node} height - The height threshold in world space. Everything below this y-coordinate is affected by fog.
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+ */
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+const exponentialHeightFogFactor = Fn( ( [ density, height ], builder ) => {
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+
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+ const viewZ = getViewZNode( builder );
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+
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+ const distance = height.sub( positionWorld.y ).max( 0 ).toConst();
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+ const m = distance.mul( viewZ ).toConst();
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+
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+ return density.mul( density, m, m ).negate().exp().oneMinus();
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+
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+} );
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+
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/**
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* This class can be used to configure a fog for the scene.
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* Nodes of this type are assigned to `Scene.fogNode`.
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@@ -47396,6 +47415,7 @@ var TSL = /*#__PURE__*/Object.freeze({
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equirectUV: equirectUV,
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exp: exp,
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exp2: exp2,
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+ exponentialHeightFogFactor: exponentialHeightFogFactor,
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expression: expression,
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faceDirection: faceDirection,
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faceForward: faceForward,
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Mr.doob