add 10bit support to displays

5 files changed, 34 insertions, 1 deletions

diff --git a/src/config/ConfigManager.cpp b/src/config/ConfigManager.cpp
index 664e07cd..bad134b1 100644
--- a/src/config/ConfigManager.cpp
+++ b/src/config/ConfigManager.cpp
@@ -532,6 +532,9 @@ void CConfigManager::handleMonitor(const std::string& command, const std::string
         if (ARGS[argno] == "mirror") {
             newrule.mirrorOf = ARGS[argno + 1];
             argno++;
+        } else if (ARGS[argno] == "bitdepth") {
+            newrule.enable10bit = ARGS[argno + 1] == "10";
+            argno++;
         } else {
             Debug::log(ERR, "Config error: invalid monitor syntax");
             parseError = "invalid syntax at \"" + ARGS[argno] + "\"";
diff --git a/src/config/ConfigManager.hpp b/src/config/ConfigManager.hpp
index 036b9d62..549beab8 100644
--- a/src/config/ConfigManager.hpp
+++ b/src/config/ConfigManager.hpp
@@ -38,6 +38,7 @@ struct SMonitorRule {
     bool        disabled = false;
     wl_output_transform transform = WL_OUTPUT_TRANSFORM_NORMAL;
     std::string mirrorOf = "";
+    bool        enable10bit = false;
 };
 
 struct SMonitorAdditionalReservedArea {
diff --git a/src/helpers/Monitor.hpp b/src/helpers/Monitor.hpp
index 7064ee28..476dd2ce 100644
--- a/src/helpers/Monitor.hpp
+++ b/src/helpers/Monitor.hpp
@@ -39,6 +39,7 @@ public:
 
     bool        dpmsStatus = true;
     bool        vrrActive = false; // this can be TRUE even if VRR is not active in the case that this display does not support it.
+    bool        enabled10bit = false; // as above, this can be TRUE even if 10 bit failed.
 
     // mirroring
     CMonitor*   pMirrorOf = nullptr;
diff --git a/src/includes.hpp b/src/includes.hpp
index 607eb539..1ed27319 100644
--- a/src/includes.hpp
+++ b/src/includes.hpp
@@ -100,6 +100,8 @@ extern "C" {
 #include <wlr/types/wlr_touch.h>
 #include <wlr/types/wlr_switch.h>
 
+#include <drm_fourcc.h>
+
 #ifndef NO_XWAYLAND
 #include <wlr/xwayland.h>
 #include <X11/Xproto.h>
diff --git a/src/render/Renderer.cpp b/src/render/Renderer.cpp
index ed94552c..3247e499 100644
--- a/src/render/Renderer.cpp
+++ b/src/render/Renderer.cpp
@@ -950,7 +950,8 @@ bool CHyprRenderer::applyMonitorRule(CMonitor* pMonitor, SMonitorRule* pMonitorR
             && DELTALESSTHAN(pMonitor->refreshRate, pMonitorRule->refreshRate, 1)
             && pMonitor->scale == pMonitorRule->scale
             && ((DELTALESSTHAN(pMonitor->vecPosition.x, pMonitorRule->offset.x, 1) && DELTALESSTHAN(pMonitor->vecPosition.y, pMonitorRule->offset.y, 1)) || pMonitorRule->offset == Vector2D(-1, -1))
-            && pMonitor->transform == pMonitorRule->transform) {
+            && pMonitor->transform == pMonitorRule->transform
+            && pMonitorRule->enable10bit == pMonitor->enabled10bit) {
 
         Debug::log(LOG, "Not applying a new rule to %s because it's already applied!", pMonitor->szName.c_str());
         return true;
@@ -1160,6 +1161,31 @@ bool CHyprRenderer::applyMonitorRule(CMonitor* pMonitor, SMonitorRule* pMonitorR
 
     pMonitor->vecPixelSize = pMonitor->vecSize;
 
+    if (pMonitorRule->enable10bit) {
+        // try 10b RGB
+        wlr_output_set_render_format(pMonitor->output, DRM_FORMAT_XRGB2101010);
+        pMonitor->enabled10bit = true;
+
+        if (!wlr_output_test(pMonitor->output)) {
+            Debug::log(ERR, "Output %s -> 10 bit enabled, but failed format DRM_FORMAT_XRGB2101010. Trying BGR.", pMonitor->output->name);
+
+            wlr_output_set_render_format(pMonitor->output, DRM_FORMAT_XBGR2101010);
+
+            if (!wlr_output_test(pMonitor->output)) {
+                Debug::log(ERR, "Output %s -> 10 bit enabled, but failed format DRM_FORMAT_XBGR2101010. Falling back to 8 bit.", pMonitor->output->name);
+
+                wlr_output_set_render_format(pMonitor->output, DRM_FORMAT_XRGB8888);
+            } else {
+                Debug::log(LOG, "10bit format DRM_FORMAT_XBGR2101010 succeeded for output %s", pMonitor->output->name);
+            }
+        } else {
+            Debug::log(LOG, "10bit format DRM_FORMAT_XRGB2101010 succeeded for output %s", pMonitor->output->name);
+        }
+    } else {
+        wlr_output_set_render_format(pMonitor->output, DRM_FORMAT_XRGB8888);
+        pMonitor->enabled10bit = false;
+    }
+
     if (!wlr_output_commit(pMonitor->output)) {
         Debug::log(ERR, "Couldn't commit output named %s", pMonitor->output->name);
         return true;