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cm: handle CM for SDR content with cm=hdr, cm_sdr_eotf=2 (#12127)

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Dominick DiMaggio 2025-12-11 18:50:57 -05:00 • committed by GitHub
parent 75f6435f70
commit 5700736505
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GPG key ID: B5690EEEBB952194
2 changed files with 11 additions and 6 deletions
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13
src/helpers/Monitor.cpp
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@ -1799,8 +1799,8 @@ uint16_t CMonitor::isDSBlocked(bool full) {
return reasons;
}
if (needsCM() && *PNONSHADER != CM_NS_IGNORE && !canNoShaderCM() && (!inHDR() || (PSURFACE->m_colorManagement.valid() && PSURFACE->m_colorManagement->isWindowsScRGB())) &&
*PPASS != 1)
const bool surfaceIsHDR = PSURFACE->m_colorManagement.valid() && (PSURFACE->m_colorManagement->isHDR() || PSURFACE->m_colorManagement->isWindowsScRGB());
if (needsCM() && *PNONSHADER != CM_NS_IGNORE && !canNoShaderCM() && ((inHDR() && (*PPASS == 0 || !surfaceIsHDR)) || (!inHDR() && (*PPASS != 1 || surfaceIsHDR))))
reasons |= DS_BLOCK_CM;
return reasons;
@ -2065,10 +2065,13 @@ bool CMonitor::canNoShaderCM() {
if (SRC_DESC->icc.fd >= 0 || m_imageDescription.icc.fd >= 0)
return false; // no ICC support
static auto PSDREOTF = CConfigValue<Hyprlang::INT>("render:cm_sdr_eotf");
// only primaries differ
if (SRC_DESC->transferFunction == m_imageDescription.transferFunction && SRC_DESC->transferFunctionPower == m_imageDescription.transferFunctionPower &&
(!inHDR() || SRC_DESC->luminances == m_imageDescription.luminances) && SRC_DESC->masteringLuminances == m_imageDescription.masteringLuminances &&
SRC_DESC->maxCLL == m_imageDescription.maxCLL && SRC_DESC->maxFALL == m_imageDescription.maxFALL)
if ((SRC_DESC->transferFunction == m_imageDescription.transferFunction ||
(*PSDREOTF == 2 && SRC_DESC->transferFunction == NColorManagement::CM_TRANSFER_FUNCTION_SRGB &&
m_imageDescription.transferFunction == NColorManagement::CM_TRANSFER_FUNCTION_GAMMA22)) &&
SRC_DESC->transferFunctionPower == m_imageDescription.transferFunctionPower && (!inHDR() || SRC_DESC->luminances == m_imageDescription.luminances) &&
SRC_DESC->masteringLuminances == m_imageDescription.masteringLuminances && SRC_DESC->maxCLL == m_imageDescription.maxCLL && SRC_DESC->maxFALL == m_imageDescription.maxFALL)
return true;
return false;