Updated builds.

build/three.js

@@ -17875,6 +17875,13 @@
 
 		}
 
+		function textureNeedsGenerateMipmaps( texture, isPowerOfTwo ) {
+
+			return texture.generateMipmaps && isPowerOfTwo &&
+				texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
+
+		}
+
 		// Fallback filters for non-power-of-2 textures
 
 		function filterFallback( f ) {
@@ -18112,7 +18119,7 @@
 
 					}
 
-					if ( texture.generateMipmaps && isPowerOfTwoImage ) {
+					if ( textureNeedsGenerateMipmaps( texture, isPowerOfTwoImage ) ) {
 
 						_gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );
 
@@ -18361,7 +18368,7 @@
 
 			}
 
-			if ( texture.generateMipmaps && isPowerOfTwoImage ) _gl.generateMipmap( _gl.TEXTURE_2D );
+			if ( textureNeedsGenerateMipmaps( texture, isPowerOfTwoImage ) ) _gl.generateMipmap( _gl.TEXTURE_2D );
 
 			textureProperties.__version = texture.version;
 
@@ -18539,7 +18546,7 @@
 
 				}
 
-				if ( renderTarget.texture.generateMipmaps && isTargetPowerOfTwo ) _gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );
+				if ( textureNeedsGenerateMipmaps( renderTarget.texture, isTargetPowerOfTwo ) ) _gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );
 				state.bindTexture( _gl.TEXTURE_CUBE_MAP, null );
 
 			} else {
@@ -18548,7 +18555,7 @@
 				setTextureParameters( _gl.TEXTURE_2D, renderTarget.texture, isTargetPowerOfTwo );
 				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D );
 
-				if ( renderTarget.texture.generateMipmaps && isTargetPowerOfTwo ) _gl.generateMipmap( _gl.TEXTURE_2D );
+				if ( textureNeedsGenerateMipmaps( renderTarget.texture, isTargetPowerOfTwo ) ) _gl.generateMipmap( _gl.TEXTURE_2D );
 				state.bindTexture( _gl.TEXTURE_2D, null );
 
 			}
@@ -18566,12 +18573,11 @@
 		function updateRenderTargetMipmap( renderTarget ) {
 
 			var texture = renderTarget.texture;
+			var isTargetPowerOfTwo = isPowerOfTwo( renderTarget );
 
-			if ( texture.generateMipmaps && isPowerOfTwo( renderTarget ) &&
-					texture.minFilter !== NearestFilter &&
-					texture.minFilter !== LinearFilter ) {
+			if ( textureNeedsGenerateMipmaps( texture, isTargetPowerOfTwo ) ) {
 
-				var target = (renderTarget && renderTarget.isWebGLRenderTargetCube) ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
+				var target = renderTarget.isWebGLRenderTargetCube ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
 				var webglTexture = properties.get( texture ).__webglTexture;
 
 				state.bindTexture( target, webglTexture );

build/three.module.js

@@ -17869,6 +17869,13 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, paramT
 
 	}
 
+	function textureNeedsGenerateMipmaps( texture, isPowerOfTwo ) {
+
+		return texture.generateMipmaps && isPowerOfTwo &&
+			texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
+
+	}
+
 	// Fallback filters for non-power-of-2 textures
 
 	function filterFallback( f ) {
@@ -18106,7 +18113,7 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, paramT
 
 				}
 
-				if ( texture.generateMipmaps && isPowerOfTwoImage ) {
+				if ( textureNeedsGenerateMipmaps( texture, isPowerOfTwoImage ) ) {
 
 					_gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );
 
@@ -18355,7 +18362,7 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, paramT
 
 		}
 
-		if ( texture.generateMipmaps && isPowerOfTwoImage ) _gl.generateMipmap( _gl.TEXTURE_2D );
+		if ( textureNeedsGenerateMipmaps( texture, isPowerOfTwoImage ) ) _gl.generateMipmap( _gl.TEXTURE_2D );
 
 		textureProperties.__version = texture.version;
 
@@ -18533,7 +18540,7 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, paramT
 
 			}
 
-			if ( renderTarget.texture.generateMipmaps && isTargetPowerOfTwo ) _gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );
+			if ( textureNeedsGenerateMipmaps( renderTarget.texture, isTargetPowerOfTwo ) ) _gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );
 			state.bindTexture( _gl.TEXTURE_CUBE_MAP, null );
 
 		} else {
@@ -18542,7 +18549,7 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, paramT
 			setTextureParameters( _gl.TEXTURE_2D, renderTarget.texture, isTargetPowerOfTwo );
 			setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D );
 
-			if ( renderTarget.texture.generateMipmaps && isTargetPowerOfTwo ) _gl.generateMipmap( _gl.TEXTURE_2D );
+			if ( textureNeedsGenerateMipmaps( renderTarget.texture, isTargetPowerOfTwo ) ) _gl.generateMipmap( _gl.TEXTURE_2D );
 			state.bindTexture( _gl.TEXTURE_2D, null );
 
 		}
@@ -18560,12 +18567,11 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, paramT
 	function updateRenderTargetMipmap( renderTarget ) {
 
 		var texture = renderTarget.texture;
+		var isTargetPowerOfTwo = isPowerOfTwo( renderTarget );
 
-		if ( texture.generateMipmaps && isPowerOfTwo( renderTarget ) &&
-				texture.minFilter !== NearestFilter &&
-				texture.minFilter !== LinearFilter ) {
+		if ( textureNeedsGenerateMipmaps( texture, isTargetPowerOfTwo ) ) {
 
-			var target = (renderTarget && renderTarget.isWebGLRenderTargetCube) ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
+			var target = renderTarget.isWebGLRenderTargetCube ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
 			var webglTexture = properties.get( texture ).__webglTexture;
 
 			state.bindTexture( target, webglTexture );