Merge "Modify dimming threshold from 0.2 to 0.9." into main am: a1283449

                                                  .fakeOutputDataspace = fakeDataspace}));

            // Turn on dithering when dimming beyond this (arbitrary) threshold...

            static constexpr float kDimmingThreshold = 0.2f;

            static constexpr float kDimmingThreshold = 0.9f;

            // ...or we're rendering an HDR layer down to an 8-bit target

            // Most HDR standards require at least 10-bits of color depth for source content, so we

            // can just extract the transfer function rather than dig into precise gralloc layout.