add uploadTexture to WebGLRenderer

There should be no change in setTexture behavior.

src/renderers/WebGLRenderer.js

@@ -5610,108 +5610,114 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 	};
 
-	this.setTexture = function ( texture, slot ) {
+	this.uploadTexture = function ( texture ) {
 
-		if ( texture.needsUpdate ) {
+		if ( ! texture.__webglInit ) {
 
-			if ( ! texture.__webglInit ) {
+			texture.__webglInit = true;
 
-				texture.__webglInit = true;
+			texture.addEventListener( 'dispose', onTextureDispose );
 
-				texture.addEventListener( 'dispose', onTextureDispose );
+			texture.__webglTexture = _gl.createTexture();
 
-				texture.__webglTexture = _gl.createTexture();
+			_this.info.memory.textures ++;
 
-				_this.info.memory.textures ++;
+		}
 
-			}
+		_gl.bindTexture( _gl.TEXTURE_2D, texture.__webglTexture );
 
-			_gl.activeTexture( _gl.TEXTURE0 + slot );
-			_gl.bindTexture( _gl.TEXTURE_2D, texture.__webglTexture );
+		_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );
+		_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha );
+		_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment );
 
-			_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );
-			_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha );
-			_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment );
+		var image = texture.image,
+		isImagePowerOfTwo = THREE.Math.isPowerOfTwo( image.width ) && THREE.Math.isPowerOfTwo( image.height ),
+		glFormat = paramThreeToGL( texture.format ),
+		glType = paramThreeToGL( texture.type );
 
-			var image = texture.image,
-			isImagePowerOfTwo = THREE.Math.isPowerOfTwo( image.width ) && THREE.Math.isPowerOfTwo( image.height ),
-			glFormat = paramThreeToGL( texture.format ),
-			glType = paramThreeToGL( texture.type );
+		setTextureParameters( _gl.TEXTURE_2D, texture, isImagePowerOfTwo );
 
-			setTextureParameters( _gl.TEXTURE_2D, texture, isImagePowerOfTwo );
+		var mipmap, mipmaps = texture.mipmaps;
 
-			var mipmap, mipmaps = texture.mipmaps;
+		if ( texture instanceof THREE.DataTexture ) {
 
-			if ( texture instanceof THREE.DataTexture ) {
+			// use manually created mipmaps if available
+			// if there are no manual mipmaps
+			// set 0 level mipmap and then use GL to generate other mipmap levels
 
-				// use manually created mipmaps if available
-				// if there are no manual mipmaps
-				// set 0 level mipmap and then use GL to generate other mipmap levels
+			if ( mipmaps.length > 0 && isImagePowerOfTwo ) {
 
-				if ( mipmaps.length > 0 && isImagePowerOfTwo ) {
+				for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
 
-					for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
+					mipmap = mipmaps[ i ];
+					_gl.texImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
 
-						mipmap = mipmaps[ i ];
-						_gl.texImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
+				}
 
-					}
+				texture.generateMipmaps = false;
+
+			} else {
 
-					texture.generateMipmaps = false;
+				_gl.texImage2D( _gl.TEXTURE_2D, 0, glFormat, image.width, image.height, 0, glFormat, glType, image.data );
 
-				} else {
+			}
+
+		} else if ( texture instanceof THREE.CompressedTexture ) {
 
-					_gl.texImage2D( _gl.TEXTURE_2D, 0, glFormat, image.width, image.height, 0, glFormat, glType, image.data );
+			for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
 
+				mipmap = mipmaps[ i ];
+				if ( texture.format !== THREE.RGBAFormat ) {
+					_gl.compressedTexImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, mipmap.data );
+				} else {
+					_gl.texImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
 				}
 
-			} else if ( texture instanceof THREE.CompressedTexture ) {
+			}
+
+		} else { // regular Texture (image, video, canvas)
+
+			// use manually created mipmaps if available
+			// if there are no manual mipmaps
+			// set 0 level mipmap and then use GL to generate other mipmap levels
+
+			if ( mipmaps.length > 0 && isImagePowerOfTwo ) {
 
 				for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
 
 					mipmap = mipmaps[ i ];
-					if ( texture.format !== THREE.RGBAFormat ) {
-						_gl.compressedTexImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, mipmap.data );
-					} else {
-						_gl.texImage2D( _gl.TEXTURE_2D, i, glFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
-					}
+					_gl.texImage2D( _gl.TEXTURE_2D, i, glFormat, glFormat, glType, mipmap );
 
 				}
 
-			} else { // regular Texture (image, video, canvas)
+				texture.generateMipmaps = false;
 
-				// use manually created mipmaps if available
-				// if there are no manual mipmaps
-				// set 0 level mipmap and then use GL to generate other mipmap levels
-
-				if ( mipmaps.length > 0 && isImagePowerOfTwo ) {
+			} else {
 
-					for ( var i = 0, il = mipmaps.length; i < il; i ++ ) {
+				_gl.texImage2D( _gl.TEXTURE_2D, 0, glFormat, glFormat, glType, texture.image );
 
-						mipmap = mipmaps[ i ];
-						_gl.texImage2D( _gl.TEXTURE_2D, i, glFormat, glFormat, glType, mipmap );
+			}
 
-					}
+		}
 
-					texture.generateMipmaps = false;
+		if ( texture.generateMipmaps && isImagePowerOfTwo ) _gl.generateMipmap( _gl.TEXTURE_2D );
 
-				} else {
+		texture.needsUpdate = false;
 
-					_gl.texImage2D( _gl.TEXTURE_2D, 0, glFormat, glFormat, glType, texture.image );
+		if ( texture.onUpdate ) texture.onUpdate();
 
-				}
+	};
 
-			}
+	this.setTexture = function ( texture, slot ) {
 
-			if ( texture.generateMipmaps && isImagePowerOfTwo ) _gl.generateMipmap( _gl.TEXTURE_2D );
+		_gl.activeTexture( _gl.TEXTURE0 + slot );
 
-			texture.needsUpdate = false;
+		if ( texture.needsUpdate ) {
 
-			if ( texture.onUpdate ) texture.onUpdate();
+			_this.uploadTexture( texture );
 
 		} else {
 
-			_gl.activeTexture( _gl.TEXTURE0 + slot );
 			_gl.bindTexture( _gl.TEXTURE_2D, texture.__webglTexture );
 
 		}