7 年之前 · 72d9098410
--- 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>
			
 
				 
			
--- 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>
			
 
				 
			
--- 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)