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Commit 6b20cf74 authored by Sally Qi's avatar Sally Qi Committed by Android (Google) Code Review
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Merge changes from topic "hlgFix" into tm-mainline-prod 

* changes:
  [automerge] Skia HLG should scale to [0, 1] instead of [0, 12] 2p: fa3c56a7
  Skia HLG should scale to [0, 1] instead of [0, 12]
parents c19dfec1 3b7167d1

libs/renderengine/skia/ColorSpaces.cpp

+9 −1
Original line number Diff line number Diff line
@@ -65,7 +65,15 @@ sk_sp<SkColorSpace> toSkColorSpace(ui::Dataspace dataspace) { 
        case HAL_DATASPACE_TRANSFER_SMPTE_170M:

            return SkColorSpace::MakeRGB(SkNamedTransferFn::kRec2020, gamut);

        case HAL_DATASPACE_TRANSFER_HLG:

            return SkColorSpace::MakeRGB(SkNamedTransferFn::kHLG, gamut);

            // return HLG transfer but scale by 1/12

            skcms_TransferFunction hlgFn;

            if (skcms_TransferFunction_makeScaledHLGish(&hlgFn, 1.f / 12.f, 2.f, 2.f,

                                                        1.f / 0.17883277f, 0.28466892f,

                                                        0.55991073f)) {

                return SkColorSpace::MakeRGB(hlgFn, gamut);

            } else {

                return SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, gamut);

            }

        case HAL_DATASPACE_TRANSFER_UNSPECIFIED:

        default:

            return SkColorSpace::MakeRGB(SkNamedTransferFn::kSRGB, gamut);