[PATCH] winex11.drv: Support reporting emulated display color depth.

[Zhiyi Zhang]

Signed-off-by: Zhiyi Zhang <zzhang at codeweavers.com>
---
 dlls/d3drm/tests/d3drm.c    |  6 ++--
 dlls/user32/tests/monitor.c |  2 --
 dlls/winex11.drv/settings.c | 64 +++++++++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 5 deletions(-)

diff --git a/dlls/d3drm/tests/d3drm.c b/dlls/d3drm/tests/d3drm.c
index d854ebcc56d..f1d48639c14 100644
--- a/dlls/d3drm/tests/d3drm.c
+++ b/dlls/d3drm/tests/d3drm.c
@@ -4061,7 +4061,7 @@ static void test_create_device_from_clipper1(void)
     surface_desc.dwSize = sizeof(surface_desc);
     hr = IDirectDrawSurface_GetSurfaceDesc(surface, &surface_desc);
     ok(hr == DD_OK, "Cannot get surface desc structure (hr = %x).\n", hr);
-    todo_wine ok(surface_desc.ddpfPixelFormat.dwRGBBitCount == 16, "Expected 16bpp, got %ubpp.\n",
+    ok(surface_desc.ddpfPixelFormat.dwRGBBitCount == 16, "Expected 16bpp, got %ubpp.\n",
             surface_desc.ddpfPixelFormat.dwRGBBitCount);
 
     hr = IDirectDraw2_RestoreDisplayMode(ddraw);
@@ -4240,7 +4240,7 @@ static void test_create_device_from_clipper2(void)
     surface_desc.dwSize = sizeof(surface_desc);
     hr = IDirectDrawSurface_GetSurfaceDesc(surface, &surface_desc);
     ok(hr == DD_OK, "Cannot get surface desc structure (hr = %x).\n", hr);
-    todo_wine ok(surface_desc.ddpfPixelFormat.dwRGBBitCount == 16, "Expected 16bpp, got %ubpp.\n",
+    ok(surface_desc.ddpfPixelFormat.dwRGBBitCount == 16, "Expected 16bpp, got %ubpp.\n",
             surface_desc.ddpfPixelFormat.dwRGBBitCount);
 
     hr = IDirectDraw2_RestoreDisplayMode(ddraw);
@@ -4418,7 +4418,7 @@ static void test_create_device_from_clipper3(void)
     surface_desc.dwSize = sizeof(surface_desc);
     hr = IDirectDrawSurface_GetSurfaceDesc(surface, &surface_desc);
     ok(hr == DD_OK, "Cannot get surface desc structure (hr = %x).\n", hr);
-    todo_wine ok(surface_desc.ddpfPixelFormat.dwRGBBitCount == 16, "Expected 16bpp, got %ubpp.\n",
+    ok(surface_desc.ddpfPixelFormat.dwRGBBitCount == 16, "Expected 16bpp, got %ubpp.\n",
             surface_desc.ddpfPixelFormat.dwRGBBitCount);
 
     hr = IDirectDraw2_RestoreDisplayMode(ddraw);
diff --git a/dlls/user32/tests/monitor.c b/dlls/user32/tests/monitor.c
index 0ce27455a66..7664bed7427 100644
--- a/dlls/user32/tests/monitor.c
+++ b/dlls/user32/tests/monitor.c
@@ -297,8 +297,6 @@ static void _expect_dm(INT line, DEVMODEA expected, const CHAR *device, DWORD te
 
     ok_(__FILE__, line)((dm.dmFields & expected.dmFields) == expected.dmFields,
             "Device %s test %d expect dmFields to contain %#x, got %#x\n", device, test, expected.dmFields, dm.dmFields);
-    /* Wine doesn't support changing color depth yet */
-    todo_wine_if(expected.dmFields & DM_BITSPERPEL && expected.dmBitsPerPel != 32 && expected.dmBitsPerPel != 24)
     ok_(__FILE__, line)(!(expected.dmFields & DM_BITSPERPEL) || dm.dmBitsPerPel == expected.dmBitsPerPel,
             "Device %s test %d expect dmBitsPerPel %u, got %u\n", device, test, expected.dmBitsPerPel, dm.dmBitsPerPel);
     ok_(__FILE__, line)(!(expected.dmFields & DM_PELSWIDTH) || dm.dmPelsWidth == expected.dmPelsWidth,
diff --git a/dlls/winex11.drv/settings.c b/dlls/winex11.drv/settings.c
index 0fa5bcf6294..a1b61e9c165 100644
--- a/dlls/winex11.drv/settings.c
+++ b/dlls/winex11.drv/settings.c
@@ -45,6 +45,16 @@ struct x11drv_display_setting
     DEVMODEW desired_mode;
 };
 
+struct x11drv_display_depth
+{
+    struct list entry;
+    ULONG_PTR display_id;
+    DWORD depth;
+};
+
+/* Display device emulated depth list, protected by modes_section */
+static struct list x11drv_display_depth_list = LIST_INIT(x11drv_display_depth_list);
+
 /* All Windows drivers seen so far either support 32 bit depths, or 24 bit depths, but never both. So if we have
  * a 32 bit framebuffer, report 32 bit bpps, otherwise 24 bit ones.
  */
@@ -405,6 +415,54 @@ static int mode_compare(const void *p1, const void *p2)
     return a->u1.s2.dmDisplayOrientation - b->u1.s2.dmDisplayOrientation;
 }
 
+static void set_display_depth(ULONG_PTR display_id, DWORD depth)
+{
+    struct x11drv_display_depth *display_depth;
+
+    EnterCriticalSection(&modes_section);
+    LIST_FOR_EACH_ENTRY(display_depth, &x11drv_display_depth_list, struct x11drv_display_depth, entry)
+    {
+        if (display_depth->display_id == display_id)
+        {
+            display_depth->depth = depth;
+            LeaveCriticalSection(&modes_section);
+            return;
+        }
+    }
+
+    display_depth = heap_alloc(sizeof(*display_depth));
+    if (!display_depth)
+    {
+        ERR("Failed to allocate memory.\n");
+        LeaveCriticalSection(&modes_section);
+        return;
+    }
+
+    display_depth->display_id = display_id;
+    display_depth->depth = depth;
+    list_add_head(&x11drv_display_depth_list, &display_depth->entry);
+    LeaveCriticalSection(&modes_section);
+}
+
+static DWORD get_display_depth(ULONG_PTR display_id)
+{
+    struct x11drv_display_depth *display_depth;
+    DWORD depth;
+
+    EnterCriticalSection(&modes_section);
+    LIST_FOR_EACH_ENTRY(display_depth, &x11drv_display_depth_list, struct x11drv_display_depth, entry)
+    {
+        if (display_depth->display_id == display_id)
+        {
+            depth = display_depth->depth;
+            LeaveCriticalSection(&modes_section);
+            return depth;
+        }
+    }
+    LeaveCriticalSection(&modes_section);
+    return screen_bpp;
+}
+
 /***********************************************************************
  *		EnumDisplaySettingsEx  (X11DRV.@)
  *
@@ -434,6 +492,10 @@ BOOL CDECL X11DRV_EnumDisplaySettingsEx( LPCWSTR name, DWORD n, LPDEVMODEW devmo
             ERR("Failed to get %s current display settings.\n", wine_dbgstr_w(name));
             return FALSE;
         }
+
+        if (!is_detached_mode(devmode))
+            devmode->dmBitsPerPel = get_display_depth(id);
+
         goto done;
     }
 
@@ -842,6 +904,8 @@ static LONG apply_display_settings(struct x11drv_display_setting *displays, INT
               full_mode->u1.s2.dmDisplayOrientation);
 
         ret = handler.set_current_mode(displays[display_idx].id, full_mode);
+        if (attached_mode && ret == DISP_CHANGE_SUCCESSFUL)
+            set_display_depth(displays[display_idx].id, full_mode->dmBitsPerPel);
         free_full_mode(full_mode);
         if (ret != DISP_CHANGE_SUCCESSFUL)
             return ret;
-- 
2.25.1