Merge pull request #5208 from henri-astre-msft/uploadTexture

add uploadTexture to WebGLRenderer

src/renderers/WebGLRenderer.js

@@ -5610,9 +5610,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 	};
 
-	this.setTexture = function ( texture, slot ) {
-
-		if ( texture.needsUpdate ) {
+	this.uploadTexture = function ( texture ) {
 
 		if ( ! texture.__webglInit ) {
 
@@ -5626,7 +5624,6 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		}
 
-			_gl.activeTexture( _gl.TEXTURE0 + slot );
 		_gl.bindTexture( _gl.TEXTURE_2D, texture.__webglTexture );
 
 		_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );
@@ -5709,9 +5706,18 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		if ( texture.onUpdate ) texture.onUpdate();
 
-		} else {
+	};
+
+	this.setTexture = function ( texture, slot ) {
 
 		_gl.activeTexture( _gl.TEXTURE0 + slot );
+
+		if ( texture.needsUpdate ) {
+
+			_this.uploadTexture( texture );
+
+		} else {
+
 			_gl.bindTexture( _gl.TEXTURE_2D, texture.__webglTexture );
 
 		}