Draft: Fix offscreen cogl pipeline for optical encoding
Currently with MR !3433, CoglPipeline priv->offscreen_pipeline
created for optical encoding is not destroyed from initial pipeline and hence it will always ignore re-generation of shaders for pq_inv_eotf
during later cases and it will not include shaders for optical encoding i.e. "linear to non-linear conversion".
Following are my observations so far:
Observation 1: I tried couple of image & video clients and my findings are same, it simply ignores pq_inv_eotf
and shaders pipeline created is only srgb_eotf->bt709_to_bt2020
, however what is rightly expected is srgb_eotf->bt709_to_bt2020->pq_inv_eotf
.
Observation 2: The pipeline looks correct and shaders srgb_eotf->bt709_to_bt2020->pq_inv_eotf
gets included properly initially only when you enable HDR via ./tools/debug-control.py --enable EnableHDR
.
Note: All this observations are for input content bt709 and HDR is enabled.
FIX: With this patch, we are trying to invalidate offscreen pipeline when setting a different color state.
This MR is related to !3433.