From 7c41903ecb71956ee238948e70fada7c07f5a330 Mon Sep 17 00:00:00 2001
From: Brad Parker <cbparker@gmail.com>
Date: Mon, 23 Jan 2017 14:50:31 -0500
Subject: [PATCH] GDI: fix color rendering of RGUI menu

---
 gfx/drivers/gdi_gfx.c | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/gfx/drivers/gdi_gfx.c b/gfx/drivers/gdi_gfx.c
index 8daeff9a62..f6a07ddedc 100644
--- a/gfx/drivers/gdi_gfx.c
+++ b/gfx/drivers/gdi_gfx.c
@@ -229,10 +229,21 @@ static bool gdi_gfx_frame(void *data, const void *frame,
 
          info->bmiHeader.biCompression = BI_BITFIELDS;
 
-         /* map RGB565 color bits, default is 555 */
-         masks[0] = 0xF800;
-         masks[1] = 0x07E0;
-         masks[2] = 0x001F;
+         /* default 16-bit format on Windows is XRGB1555 */
+         if (frame_to_copy == gdi_menu_frame)
+         {
+            /* map RGB444 color bits for RGUI */
+            masks[0] = 0xF000;
+            masks[1] = 0x0F00;
+            masks[2] = 0x00F0;
+         }
+         else
+         {
+            /* map RGB565 color bits for core */
+            masks[0] = 0xF800;
+            masks[1] = 0x07E0;
+            masks[2] = 0x001F;
+         }
       }
       else
          info->bmiHeader.biCompression = BI_RGB;