Transparent objects being rendered in the scene become brighter as if there is an extra light source

[MossFrog]

After adding the effekseer runtime to a scene transparent objects that are not part of the effect begin to flicker when on the edge of the frustum of the camera. It seems to be an issue that persists even when an effect is not playing and seems to alter the brightness/color values of the objects. Replacing the material of the object with a meshBasicMaterial or a shader material does not seem to solve this issue. Completely removing the effekseer runtime fixes this.

[MossFrog]

This issue is only visible on transparent objects or objects that have textures with an alpha channel (Opacity value less than 1)

[durswd]

It seems that the bug causes by restoration of OpenGL states.
Please would you send a code which can causes the bug?

[MossFrog]

Create a couple of transparent objects such as cubes, planes or try a GLTF model with a couple of transparent textures. Then add a directional light and ambient light. Set the camera's FOV value higher than the default and whenever you pan or move the camera the objects begin to flicker brighter when the Effekseer renderer is used within the scene.

[MossFrog]

An example alteration to a regular colored cube would be
child.material.transparent = true;
child.material.opacity = 0.7;

Materials with similar settings seem to trigger the issue

[MossFrog]

Example of the same object after the camera angle changes (Transparent colored plane with a meshBasicMaterial)

[durswd]

I will try to reproduce the bug. So I need a time. Please wait this weekend.

[MossFrog]

Okay cheers will be waiting for a response.

[MossFrog]

I tried the renderer with a simple cube also

Left side is without effekseer renderer right side is with it.
Cube with material color red, transparency true, opacity 0.77

[MossFrog]

const renderer = new THREE.WebGLRenderer();

setting the renderer's property "alpha" to false fixed this issue :) !

[durswd]

Please try it with the version
EffekseerForWebGL160.zip