Updated builds.

build/three.js

@@ -24525,13 +24525,6 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		if ( properties.get( renderTarget ).__webglFramebuffer ) {
 
-			if ( renderTarget.format !== THREE.RGBAFormat ) {
-
-				console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA format. readPixels can read only RGBA format.' );
-				return;
-
-			}
-
 			var restore = false;
 
 			if ( properties.get( renderTarget ).__webglFramebuffer !== _currentFramebuffer ) {
@@ -24542,9 +24535,23 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 			}
 
+			if ( renderTarget.format !== THREE.RGBAFormat && paramThreeToGL( renderTarget.format ) !== _gl.getParameter( _gl.IMPLEMENTATION_COLOR_READ_FORMAT ) ) {
+
+				console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );
+				return;
+
+			}
+
+			if ( renderTarget.type !== THREE.UnsignedByteType && paramThreeToGL( renderTarget.type ) !== _gl.getParameter( _gl.IMPLEMENTATION_COLOR_READ_TYPE ) ) {
+
+				console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );
+				return;
+
+			}
+
 			if ( _gl.checkFramebufferStatus( _gl.FRAMEBUFFER ) === _gl.FRAMEBUFFER_COMPLETE ) {
 
-				_gl.readPixels( x, y, width, height, _gl.RGBA, _gl.UNSIGNED_BYTE, buffer );
+				_gl.readPixels( x, y, width, height, paramThreeToGL( renderTarget.format ), paramThreeToGL( renderTarget.type ), buffer );
 
 			} else {
 
@@ -24562,21 +24569,14 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 	};
 
-	function updateRenderTargetMipmap ( renderTarget ) {
-
-		if ( renderTarget instanceof THREE.WebGLRenderTargetCube ) {
-
-			state.bindTexture( _gl.TEXTURE_CUBE_MAP, properties.get( renderTarget ).__webglTexture );
-			_gl.generateMipmap( _gl.TEXTURE_CUBE_MAP );
-			state.bindTexture( _gl.TEXTURE_CUBE_MAP, null );
+	function updateRenderTargetMipmap( renderTarget ) {
 
-		} else {
+		var target = renderTarget instanceof THREE.WebGLRenderTargetCube ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
+		var texture = properties.get( renderTarget ).__webglTexture;
 
-			state.bindTexture( _gl.TEXTURE_2D, properties.get( renderTarget ).__webglTexture );
-			_gl.generateMipmap( _gl.TEXTURE_2D );
-			state.bindTexture( _gl.TEXTURE_2D, null );
-
-		}
+		state.bindTexture( target, texture );
+		_gl.generateMipmap( target );
+		state.bindTexture( target, null );
 
 	}