Merge branch 'hexplusone' into 'master'

Correctly format single digit hex values

Closes #8541

See merge request OpenMW/openmw!4700

Author: psi29a

CHANGELOG.md

@@ -235,6 +235,7 @@
     Bug #8462: Crashes when resizing the window on macOS
     Bug #8465: Blue screen w/ antialiasing and post-processing on macOS
     Bug #8503: Camera does not handle NaN gracefully
+    Bug #8541: Lua: util.color:asHex produces wrong output for some colors
     Feature #1415: Infinite fall failsafe
     Feature #2566: Handle NAM9 records for manual cell references
     Feature #3501: OpenMW-CS: Instance Editing - Shortcuts for axial locking

components/misc/color.cpp

@@ -47,7 +47,10 @@ namespace Misc
         for (size_t i = 0; i < rgb.size(); i++)
         {
             int b = static_cast<int>(rgb[i] * 255.0f);
-            auto [_, ec] = std::to_chars(result.data() + i * 2, result.data() + (i + 1) * 2, b, 16);
+            char* start = result.data() + i * 2;
+            if (b < 16)
+                start++;
+            auto [_, ec] = std::to_chars(start, result.data() + (i + 1) * 2, b, 16);
             if (ec != std::errc())
                 throw std::logic_error("Error when converting number to base 16");
         }