diff --git a/dll/directx/wine/d3dx9_36/surface.c b/dll/directx/wine/d3dx9_36/surface.c
index 6e2c10a..01729ea 100644
--- a/dll/directx/wine/d3dx9_36/surface.c
+++ b/dll/directx/wine/d3dx9_36/surface.c
@@ -111,6 +111,7 @@ static const GUID *d3dformat_to_wic_guid(D3DFORMAT format)
 #define DDS_PF_RGB 0x40
 #define DDS_PF_YUV 0x200
 #define DDS_PF_LUMINANCE 0x20000
+#define DDS_PF_BUMPLUMINANCE 0x40000
 #define DDS_PF_BUMPDUDV 0x80000
 
 struct dds_pixel_format
@@ -334,6 +335,17 @@ static D3DFORMAT dds_bump_to_d3dformat(const struct dds_pixel_format *pixel_form
     return D3DFMT_UNKNOWN;
 }
 
+static D3DFORMAT dds_bump_luminance_to_d3dformat(const struct dds_pixel_format *pixel_format)
+{
+    if (pixel_format->bpp == 32 && pixel_format->rmask == 0x000000ff && pixel_format->gmask == 0x0000ff00
+            && pixel_format->bmask == 0x00ff0000)
+        return D3DFMT_X8L8V8U8;
+
+    WARN("Unknown bump pixel format (%u, %#x, %#x, %#x, %#x)\n", pixel_format->bpp,
+        pixel_format->rmask, pixel_format->gmask, pixel_format->bmask, pixel_format->amask);
+    return D3DFMT_UNKNOWN;
+}
+
 static D3DFORMAT dds_pixel_format_to_d3dformat(const struct dds_pixel_format *pixel_format)
 {
     TRACE("pixel_format: size %u, flags %#x, fourcc %#x, bpp %u.\n", pixel_format->size,
@@ -351,6 +363,8 @@ static D3DFORMAT dds_pixel_format_to_d3dformat(const struct dds_pixel_format *pi
         return dds_alpha_to_d3dformat(pixel_format);
     if (pixel_format->flags & DDS_PF_BUMPDUDV)
         return dds_bump_to_d3dformat(pixel_format);
+    if (pixel_format->flags & DDS_PF_BUMPLUMINANCE)
+        return dds_bump_luminance_to_d3dformat(pixel_format);
 
     WARN("Unknown pixel format (flags %#x, fourcc %#x, bpp %u, r %#x, g %#x, b %#x, a %#x)\n",
         pixel_format->flags, pixel_format->fourcc, pixel_format->bpp,