Related to #66457.

Godot version

4.0.beta (53d2a9a)

System information

Fedora 36, GeForce GTX 1080 (NVIDIA 515.65.01)

Issue description

Glow has no effect on the displayed scene when enabled in OpenGL, regardless of the value of Bloom or HDR Threshold.

Both glow and adjustments are enabled on the example below.

OpenGL

Vulkan

Steps to reproduce

• Switch to the OpenGL driver in the Project Settings.
  • Make sure to start the editor with single-window mode enabled afterwards. This can be done by enabling Single Window Mode in the Editor Settings before changing the driver, or by opening the project in the editor directly with the --single-window command line argument.
• Add a WorldEnvironment node, a Camera3D node and a MeshInstance3D in front of the camera.
• Enable glow and adjustments. Change brightness/contrast/saturation to make a visible difference in the scene.

Minimal reproduction project

test_opengl_glow_adjustments_editor.zip