The color is brighter on Quest3?

It seems like that on Quest3, the app shows brighter color?

In Openxr Spec, SRGB is recommended:
https://registry.khronos.org/OpenXR/specs/1.1/html/xrspec.html#rendering-swapchain-image-management

And also, in Quest3 official sample code, SRGB color format is also used for rendering: https://github.com/meta-quest/Meta-OpenXR-SDK/blob/main/Samples/XrSamples/XrCompositor_NativeActivity/Src/XrCompositor_NativeActivity.c#L1842

I have also done some experiments, if I follow the instructions that Oculus sample shown to us, I can get desired colors on the screen. That is to say: if I program the glclear value as (0.5,0.5,0.5), the color on Quest3's screen is (127,127,127). It is equal to middle gray 255/2=127.5

But with OpenXR-SDK-Source, the color one the screen is (187,187,187), it is more like gamma correction is applied to (127,127,127).

【Note】While using sRGB in the code, we need to use GL(glDisable(GL_FRAMEBUFFER_SRGB_EXT)) as Quest has done:
https://github.com/meta-quest/Meta-OpenXR-SDK/blob/main/Samples/XrSamples/XrSceneModel/Src/SceneModelGl.cpp#L1089

From my point of view, the color should on the screen should be the same as what I wrote in the code, not gamma corrected.

Start by comparing the linked OpenXR and Meta Quest sample behavior, especially the swapchain sRGB format and the GL_FRAMEBUFFER_SRGB_EXT state shown in the sample files. Reproduce the 0.5 gray clear value on Quest 3 and trace the OpenXR-SDK-Source rendering path; done means the displayed value matches the intended 127/128 gray without unwanted gamma correction.

Written by the indexing model from the issue text.