From 55d8619ac2cd293f13a20f182ebb12598051f266 Mon Sep 17 00:00:00 2001
From: David Peicho <davidHenri.Peicho@siemens-healthineers.com>
Date: Mon, 11 Feb 2019 15:41:06 -0500
Subject: [PATCH] texture3D: add support for TEXTURE_WRAP_R

---
 rollup.config.js                     |  1 +
 src/renderers/webgl/WebGLTextures.js | 12 ++++++++++++
 src/textures/DataTexture3D.js        |  4 +++-
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/rollup.config.js b/rollup.config.js
index 62bfab82e0..440ab7c746 100644
--- a/rollup.config.js
+++ b/rollup.config.js
@@ -66,6 +66,7 @@ function glconstants() {
 		TEXTURE_MIN_FILTER: 10241,
 		TEXTURE_WRAP_S: 10242,
 		TEXTURE_WRAP_T: 10243,
+		TEXTURE_WRAP_R: 32882,
 		REPEAT: 10497,
 		COLOR_BUFFER_BIT: 16384,
 		FUNC_ADD: 32774,
diff --git a/src/renderers/webgl/WebGLTextures.js b/src/renderers/webgl/WebGLTextures.js
index 70d8dc1d7c..bdebc9a332 100644
--- a/src/renderers/webgl/WebGLTextures.js
+++ b/src/renderers/webgl/WebGLTextures.js
@@ -434,6 +434,12 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 			_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, utils.convert( texture.wrapS ) );
 			_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, utils.convert( texture.wrapT ) );
 
+			if ( textureType === _gl.TEXTURE_3D ) {
+
+				_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_R, utils.convert( texture.wrapR ) );
+
+			}
+
 			_gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, utils.convert( texture.magFilter ) );
 			_gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, utils.convert( texture.minFilter ) );
 
@@ -442,6 +448,12 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 			_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, _gl.CLAMP_TO_EDGE );
 			_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, _gl.CLAMP_TO_EDGE );
 
+			if ( textureType === _gl.TEXTURE_3D ) {
+
+				_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_R, _gl.CLAMP_TO_EDGE );
+
+			}
+
 			if ( texture.wrapS !== ClampToEdgeWrapping || texture.wrapT !== ClampToEdgeWrapping ) {
 
 				console.warn( 'THREE.WebGLRenderer: Texture is not power of two. Texture.wrapS and Texture.wrapT should be set to THREE.ClampToEdgeWrapping.' );
diff --git a/src/textures/DataTexture3D.js b/src/textures/DataTexture3D.js
index 5aae3909dd..d34a3ab4e0 100644
--- a/src/textures/DataTexture3D.js
+++ b/src/textures/DataTexture3D.js
@@ -3,7 +3,7 @@
  */
 
 import { Texture } from './Texture.js';
-import { NearestFilter } from '../constants.js';
+import { ClampToEdgeWrapping, NearestFilter } from '../constants.js';
 
 function DataTexture3D( data, width, height, depth ) {
 
@@ -22,6 +22,8 @@ function DataTexture3D( data, width, height, depth ) {
 	this.magFilter = NearestFilter;
 	this.minFilter = NearestFilter;
 
+	this.wrapR = ClampToEdgeWrapping;
+
 	this.generateMipmaps = false;
 	this.flipY = false;
 
-- 
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