Reviewed-by: Liming Gao <liming....@intel.com>
> -----Original Message-----
> From: Bi, Dandan
> Sent: Wednesday, June 01, 2016 4:56 PM
> To: edk2-devel@lists.01.org
> Cc: Gao, Liming <liming....@intel.com>; Dong, Eric <eric.d...@intel.com>
> Subject: [patch] MdeModulePkg/HiiDatabase: Preinit background when
> render string to screen
>
> When render string to screen, for proportional fonts,
> the background color may not set to the whole BltBuffer.
> And this will cause incorrect display.
> Now initialize the background color to fix this issue.
>
> Cc: Liming Gao <liming....@intel.com>
> Cc: Eric Dong <eric.d...@intel.com>
> Contributed-under: TianoCore Contribution Agreement 1.0
> Signed-off-by: Dandan Bi <dandan...@intel.com>
> Reviewed-by: Eric Dong <eric.d...@intel.com>
> ---
> MdeModulePkg/Universal/HiiDatabaseDxe/Font.c | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/MdeModulePkg/Universal/HiiDatabaseDxe/Font.c
> b/MdeModulePkg/Universal/HiiDatabaseDxe/Font.c
> index 56b30ff..5d31f75 100644
> --- a/MdeModulePkg/Universal/HiiDatabaseDxe/Font.c
> +++ b/MdeModulePkg/Universal/HiiDatabaseDxe/Font.c
> @@ -1611,10 +1611,11 @@ HiiStringToImage (
> UINTN RowInfoSize;
> BOOLEAN LineBreak;
> UINTN StrLength;
> EFI_GRAPHICS_OUTPUT_BLT_PIXEL *RowBufferPtr;
> HII_GLOBAL_FONT_INFO *GlobalFont;
> + UINT32 PreInitBkgnd;
>
> //
> // Check incoming parameters.
> //
>
> @@ -2047,10 +2048,15 @@ HiiStringToImage (
> if (BltBuffer == NULL) {
> Status = EFI_OUT_OF_RESOURCES;
> goto Exit;
> }
> //
> + // Initialize the background color.
> + //
> + PreInitBkgnd = Background.Blue | Background.Green << 8 |
> Background.Red << 16;
> + SetMem32 (BltBuffer,RowInfo[RowIndex].LineWidth *
> RowInfo[RowIndex].LineHeight * sizeof
> (EFI_GRAPHICS_OUTPUT_BLT_PIXEL),PreInitBkgnd);
> + //
> // Set BufferPtr to Origin by adding baseline to the starting
> position.
> //
> BufferPtr = BltBuffer + BaseLine * RowInfo[RowIndex].LineWidth;
> }
> for (Index1 = RowInfo[RowIndex].StartIndex; Index1 <=
> RowInfo[RowIndex].EndIndex; Index1++) {
> --
> 1.9.5.msysgit.1
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