Merge pull request #13742 from WestLangley/dev-bump_links

mrdoob · web-flow · commit 018dc4eb8736 · 2018-04-02T17:41:38.000-07:00
Corrected bump mapping references
diff --git a/examples/webgl_materials_bumpmap.html b/examples/webgl_materials_bumpmap.html
@@ -39,7 +39,7 @@
 
 	<body>
 		<div id="info">
-			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl bump mapping without tangents using <a href="http://mmikkelsen3d.blogspot.sk/2011/07/derivative-maps.html">Morten Mikkelsen's</a> method -
+			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl bump mapping without tangents -
 			<a href="http://graphics.cs.williams.edu/data/meshes.xml#14" target="_blank" rel="noopener">Lee Perry-Smith</a> head
 		</div>
 
diff --git a/examples/webgl_materials_bumpmap_skin.html b/examples/webgl_materials_bumpmap_skin.html
@@ -36,7 +36,7 @@
 
 	<body>
 		<div id="info">
-			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl simple single-pass skin material with <a href="http://mmikkelsen3d.blogspot.sk/2011/07/derivative-maps.html">tangent-less bump mapping</a> -
+			<a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - webgl simple, single-pass, skin material with tangent-less bump mapping</a> -
 			<a href="http://graphics.cs.williams.edu/data/meshes.xml#14" target="_blank" rel="noopener">Lee Perry-Smith</a> head
 		</div>
 
diff --git a/src/renderers/shaders/ShaderChunk/bumpmap_pars_fragment.glsl b/src/renderers/shaders/ShaderChunk/bumpmap_pars_fragment.glsl
@@ -3,8 +3,8 @@
 	uniform sampler2D bumpMap;
 	uniform float bumpScale;
 
-	// Derivative maps - bump mapping unparametrized surfaces by Morten Mikkelsen
-	// http://mmikkelsen3d.blogspot.sk/2011/07/derivative-maps.html
+	// Bump Mapping Unparametrized Surfaces on the GPU by Morten S. Mikkelsen
+	// http://api.unrealengine.com/attachments/Engine/Rendering/LightingAndShadows/BumpMappingWithoutTangentSpace/mm_sfgrad_bump.pdf
 
 	// Evaluate the derivative of the height w.r.t. screen-space using forward differencing (listing 2)
 
