From e311cad8f7d8c6de210acbad43351b90bf34eeaa Mon Sep 17 00:00:00 2001
From: Rafal Kupiec <belliash@codingworkshop.eu.org>
Date: Sun, 12 May 2024 22:43:06 +0200
Subject: [PATCH] Allow to clear framebuffer screen with any, custom background
 color

---
 sdk/xtdk/hltypes.h      | 11 +++++++++++
 xtoskrnl/hl/efifb.c     | 19 +++++++++++++++----
 xtoskrnl/includes/hli.h |  2 +-
 3 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/sdk/xtdk/hltypes.h b/sdk/xtdk/hltypes.h
index 60764ee..e6c907c 100644
--- a/sdk/xtdk/hltypes.h
+++ b/sdk/xtdk/hltypes.h
@@ -154,6 +154,17 @@ typedef struct _HAL_FRAMEBUFFER_DATA
     UINT BitsPerPixel;
     UINT Pitch;
     PVOID Font;
+    struct
+    {
+        USHORT BlueShift;
+        USHORT BlueSize;
+        USHORT GreenShift;
+        USHORT GreenSize;
+        USHORT RedShift;
+        USHORT RedSize;
+        USHORT ReservedShift;
+        USHORT ReservedSize;
+    } Pixels;
 } HAL_FRAMEBUFFER_DATA, *PHAL_FRAMEBUFFER_DATA;
 
 /* SMBIOS table header structure */
diff --git a/xtoskrnl/hl/efifb.c b/xtoskrnl/hl/efifb.c
index 5b87b19..62398f2 100644
--- a/xtoskrnl/hl/efifb.c
+++ b/xtoskrnl/hl/efifb.c
@@ -11,7 +11,10 @@
 
 
 /**
- * Clears the screen by drawing a filled black box.
+ * Clears the screen by drawing a box filled with specified color.
+ *
+ * @param Color
+ *        Specifies the color of the box used to fill the screen.
  *
  * @return This routine does not return any value.
  *
@@ -19,7 +22,7 @@
  */
 XTAPI
 VOID
-HlClearScreen(VOID)
+HlClearScreen(IN ULONG Color)
 {
     SIZE_T Line, PositionX, PositionY;
     PULONG FrameBuf;
@@ -33,7 +36,7 @@ HlClearScreen(VOID)
         Line = PositionY * HlpFrameBufferData.PixelsPerScanLine;
         for(PositionX = 0; PositionX < HlpFrameBufferData.Width; PositionX++)
         {
-            FrameBuf[Line + PositionX] = 0x00000000;
+            FrameBuf[Line + PositionX] = Color;
         }
     }
 }
@@ -128,10 +131,18 @@ HlInitializeFrameBuffer(VOID)
     HlpFrameBufferData.BitsPerPixel = KeInitializationBlock->LoaderInformation.FrameBuffer.BitsPerPixel;
     HlpFrameBufferData.PixelsPerScanLine = KeInitializationBlock->LoaderInformation.FrameBuffer.PixelsPerScanLine;
     HlpFrameBufferData.Pitch = KeInitializationBlock->LoaderInformation.FrameBuffer.Pitch;
+    HlpFrameBufferData.Pixels.BlueShift = KeInitializationBlock->LoaderInformation.FrameBuffer.Pixels.BlueShift;
+    HlpFrameBufferData.Pixels.BlueSize = KeInitializationBlock->LoaderInformation.FrameBuffer.Pixels.BlueSize;
+    HlpFrameBufferData.Pixels.GreenShift = KeInitializationBlock->LoaderInformation.FrameBuffer.Pixels.GreenShift;
+    HlpFrameBufferData.Pixels.GreenSize = KeInitializationBlock->LoaderInformation.FrameBuffer.Pixels.GreenSize;
+    HlpFrameBufferData.Pixels.RedShift = KeInitializationBlock->LoaderInformation.FrameBuffer.Pixels.RedShift;
+    HlpFrameBufferData.Pixels.RedSize = KeInitializationBlock->LoaderInformation.FrameBuffer.Pixels.RedSize;
+    HlpFrameBufferData.Pixels.ReservedShift = KeInitializationBlock->LoaderInformation.FrameBuffer.Pixels.ReservedShift;
+    HlpFrameBufferData.Pixels.ReservedSize = KeInitializationBlock->LoaderInformation.FrameBuffer.Pixels.ReservedSize;
     HlpFrameBufferData.Initialized = TRUE;
 
     /* Clear screen */
-    HlClearScreen();
+    HlClearScreen(0x00000000);
 
     /* Return success */
     return STATUS_SUCCESS;
diff --git a/xtoskrnl/includes/hli.h b/xtoskrnl/includes/hli.h
index d62d75d..a5eb389 100644
--- a/xtoskrnl/includes/hli.h
+++ b/xtoskrnl/includes/hli.h
@@ -14,7 +14,7 @@
 /* HAL library routines forward references */
 XTAPI
 VOID
-HlClearScreen(VOID);
+HlClearScreen(IN ULONG Color);
 
 XTCDECL
 XTSTATUS