WebGLRenderer: Fixed PointsMaterial pixelRatio.

src/renderers/WebGLRenderer.js

@@ -1982,8 +1982,8 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		uniforms.diffuse.value = material.color;
 		uniforms.opacity.value = material.opacity;
-		uniforms.size.value = material.size;
-		uniforms.scale.value = _canvas.height / 2.0; // TODO: Cache this.
+		uniforms.size.value = material.size * _pixelRatio;
+		uniforms.scale.value = _canvas.clientHeight / 2.0; // TODO: Cache this.
 
 		uniforms.map.value = material.map;