renderer: add render:non_shader_cm and fixes (#11900)

src/config/ConfigDescriptions.hpp

@@ -1524,6 +1524,12 @@ inline static const std::vector<SConfigOptionDescription> CONFIG_OPTIONS = {
         .type        = CONFIG_OPTION_BOOL,
         .data        = SConfigOptionDescription::SBoolData{false},
     },
+    SConfigOptionDescription{
+        .value       = "render:non_shader_cm",
+        .description = "Enable CM without shader. 0 - disable, 1 - whenever possible, 2 - DS and passthrough only, 3 - don't block DS when non-shader CM isn't available",
+        .type        = CONFIG_OPTION_CHOICE,
+        .data        = SConfigOptionDescription::SChoiceData{0, "disable,always,ondemand,ignore"},
+    },
 
     /*
      * cursor:

src/config/ConfigManager.cpp

@@ -777,6 +777,7 @@ CConfigManager::CConfigManager() {
     registerConfigVar("render:send_content_type", Hyprlang::INT{1});
     registerConfigVar("render:cm_auto_hdr", Hyprlang::INT{1});
     registerConfigVar("render:new_render_scheduling", Hyprlang::INT{0});
+    registerConfigVar("render:non_shader_cm", Hyprlang::INT{2});
 
     registerConfigVar("ecosystem:no_update_news", Hyprlang::INT{0});
     registerConfigVar("ecosystem:no_donation_nag", Hyprlang::INT{0});

src/helpers/Monitor.cpp

@@ -534,7 +534,8 @@ void CMonitor::applyCMType(eCMType cmType) {
 
     if (oldImageDescription != m_imageDescription) {
         m_imageDescription.updateId();
-        PROTO::colorManagement->onMonitorImageDescriptionChanged(m_self);
+        if (PROTO::colorManagement)
+            PROTO::colorManagement->onMonitorImageDescriptionChanged(m_self);
     }
 }
 
@@ -1701,6 +1702,7 @@ uint16_t CMonitor::isDSBlocked(bool full) {
     uint16_t    reasons        = 0;
     static auto PDIRECTSCANOUT = CConfigValue<Hyprlang::INT>("render:direct_scanout");
     static auto PPASS          = CConfigValue<Hyprlang::INT>("render:cm_fs_passthrough");
+    static auto PNONSHADER     = CConfigValue<Hyprlang::INT>("render:non_shader_cm");
 
     if (*PDIRECTSCANOUT == 0) {
         reasons |= DS_BLOCK_USER;
@@ -1770,7 +1772,8 @@ uint16_t CMonitor::isDSBlocked(bool full) {
             return reasons;
     }
 
-    if (!canNoShaderCM() && (!inHDR() || (PSURFACE->m_colorManagement.valid() && PSURFACE->m_colorManagement->isWindowsScRGB())) && *PPASS != 1)
+    if (needsCM() && *PNONSHADER != CM_NS_IGNORE && !canNoShaderCM() && (!inHDR() || (PSURFACE->m_colorManagement.valid() && PSURFACE->m_colorManagement->isWindowsScRGB())) &&
+        *PPASS != 1)
         reasons |= DS_BLOCK_CM;
 
     return reasons;
@@ -1989,11 +1992,16 @@ std::optional<NColorManagement::SImageDescription> CMonitor::getFSImageDescripti
 }
 
 bool CMonitor::needsCM() {
-    return getFSImageDescription() != m_imageDescription;
+    const auto SRC_DESC = getFSImageDescription();
+    return SRC_DESC.has_value() && SRC_DESC.value() != m_imageDescription;
 }
 
 // TODO support more drm properties
 bool CMonitor::canNoShaderCM() {
+    static auto PNONSHADER = CConfigValue<Hyprlang::INT>("render:non_shader_cm");
+    if (*PNONSHADER == CM_NS_DISABLE)
+        return false;
+
     const auto SRC_DESC = getFSImageDescription();
     if (!SRC_DESC.has_value())
         return false;
@@ -2006,7 +2014,7 @@ bool CMonitor::canNoShaderCM() {
 
     // only primaries differ
     if (SRC_DESC->transferFunction == m_imageDescription.transferFunction && SRC_DESC->transferFunctionPower == m_imageDescription.transferFunctionPower &&
-        SRC_DESC->luminances == m_imageDescription.luminances && SRC_DESC->masteringLuminances == m_imageDescription.masteringLuminances &&
+        (!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;
 

src/protocols/types/ColorManagement.hpp

@@ -11,6 +11,13 @@
 #define HLG_MAX_LUMINANCE 1000.0
 
 namespace NColorManagement {
+    enum eNoShader : uint8_t {
+        CM_NS_DISABLE  = 0,
+        CM_NS_ALWAYS   = 1,
+        CM_NS_ONDEMAND = 2,
+        CM_NS_IGNORE   = 3,
+    };
+
     enum ePrimaries : uint8_t {
         CM_PRIMARIES_SRGB         = 1,
         CM_PRIMARIES_PAL_M        = 2,

src/render/Renderer.cpp

@@ -1483,9 +1483,10 @@ static hdr_output_metadata       createHDRMetadata(SImageDescription settings, S
 }
 
 bool CHyprRenderer::commitPendingAndDoExplicitSync(PHLMONITOR pMonitor) {
-    static auto PCT      = CConfigValue<Hyprlang::INT>("render:send_content_type");
+    static auto PCT        = CConfigValue<Hyprlang::INT>("render:send_content_type");
-    static auto PPASS    = CConfigValue<Hyprlang::INT>("render:cm_fs_passthrough");
+    static auto PPASS      = CConfigValue<Hyprlang::INT>("render:cm_fs_passthrough");
-    static auto PAUTOHDR = CConfigValue<Hyprlang::INT>("render:cm_auto_hdr");
+    static auto PAUTOHDR   = CConfigValue<Hyprlang::INT>("render:cm_auto_hdr");
+    static auto PNONSHADER = CConfigValue<Hyprlang::INT>("render:non_shader_cm");
 
     static bool needsHDRupdate = false;
 
@@ -1570,7 +1571,7 @@ bool CHyprRenderer::commitPendingAndDoExplicitSync(PHLMONITOR pMonitor) {
         pMonitor->m_output->state->setContentType(NContentType::toDRM(FS_WINDOW ? FS_WINDOW->getContentType() : CONTENT_TYPE_NONE));
 
     if (FS_WINDOW != pMonitor->m_previousFSWindow) {
-        if (!FS_WINDOW || !pMonitor->needsCM() || !pMonitor->canNoShaderCM()) {
+        if (!FS_WINDOW || !pMonitor->needsCM() || !pMonitor->canNoShaderCM() || (*PNONSHADER == CM_NS_ONDEMAND && pMonitor->m_lastScanout.expired() && *PPASS != 1)) {
             if (pMonitor->m_noShaderCTM) {
                 Debug::log(INFO, "[CM] No fullscreen CTM, restoring previous one");
                 pMonitor->m_noShaderCTM = false;