meta: Document DXVK_NVAPI_DRS_DWORDS

README.md

@@ -120,6 +120,7 @@ The following environment variables tweak DXVK-NVAPI's runtime behavior:
   - `GB200` (Blackwell)
 - `DXVK_NVAPI_LOG_LEVEL` set to `info` prints log statements. The default behavior omits any logging. Please fill an issue if using log servery `info` creates log spam. Setting severity to `trace` logs all entry points enter and exits, this has a severe effect on performance. All other log levels will be interpreted as `none`.
 - `DXVK_NVAPI_LOG_PATH` enables file logging additionally to console output and sets the path where the log file `nvapi.log`/`nvapi64.log`/`nvofapi64.log` should be written to. Log statements are appended to an existing file. Please remove this file once in a while to prevent excessive grow. This requires `DXVK_NVAPI_LOG_LEVEL` set to `info` or `trace`.
+- `DXVK_NVAPI_DRS_DWORDS` allows setting custom values for arbitrary driver settings of DWORD type. Format is `setting1=value1,setting2=value2,…` where both `settingN` and `valueN` are unsigned 32-bit integers and can be prefixed with `0x` or `0X` to parse them as hexadecimal numbers. For example, `DXVK_NVAPI_DRS_DWORDS=0x10E41DF3=0xffffff,0x10E41DF7=0xffffff` overrides presets for both DLSS Super Resolution and DLSS Ray Reconstruction to latest.
 
 The following environment variables tweak DXVK-NVAPI's Vulkan Reflex layer's runtime behavior: