LensFlarePlugin: Fixed viewport support.

src/renderers/webgl/plugins/LensFlarePlugin.js

@@ -314,7 +314,7 @@ THREE.LensFlarePlugin = function ( renderer, flares ) {
 		gl.bindBuffer( gl.ELEMENT_ARRAY_BUFFER, elementBuffer );
 
 		state.disable( gl.CULL_FACE );
-		gl.depthMask( false );
+		state.setDepthWrite( false );
 
 		for ( var i = 0, l = flares.length; i < l; i ++ ) {
 
@@ -351,7 +351,7 @@ THREE.LensFlarePlugin = function ( renderer, flares ) {
 				state.bindTexture( gl.TEXTURE_2D, null );
 				state.activeTexture( gl.TEXTURE1 );
 				state.bindTexture( gl.TEXTURE_2D, tempTexture );
-				gl.copyTexImage2D( gl.TEXTURE_2D, 0, gl.RGB, screenPositionPixels.x - 8, screenPositionPixels.y - 8, 16, 16, 0 );
+				gl.copyTexImage2D( gl.TEXTURE_2D, 0, gl.RGB, viewport.x + screenPositionPixels.x - 8, viewport.y + screenPositionPixels.y - 8, 16, 16, 0 );
 
 
 				// render pink quad
@@ -370,7 +370,7 @@ THREE.LensFlarePlugin = function ( renderer, flares ) {
 
 				state.activeTexture( gl.TEXTURE0 );
 				state.bindTexture( gl.TEXTURE_2D, occlusionTexture );
-				gl.copyTexImage2D( gl.TEXTURE_2D, 0, gl.RGBA, screenPositionPixels.x - 8, screenPositionPixels.y - 8, 16, 16, 0 );
+				gl.copyTexImage2D( gl.TEXTURE_2D, 0, gl.RGBA, viewport.x + screenPositionPixels.x - 8, viewport.y + screenPositionPixels.y - 8, 16, 16, 0 );
 
 
 				// restore graphics
@@ -441,7 +441,7 @@ THREE.LensFlarePlugin = function ( renderer, flares ) {
 
 		state.enable( gl.CULL_FACE );
 		state.enable( gl.DEPTH_TEST );
-		gl.depthMask( true );
+		state.setDepthWrite( true );
 
 		renderer.resetGLState();