Alexandre Julliard : Revert "gdi32: Pre-multiply RGB values by alpha for subpixel font rendering."
Alexandre Julliard
julliard at winehq.org
Fri May 28 09:43:09 CDT 2010
Module: wine
Branch: master
Commit: aa9c78170363699491c1abe3efa45b2100eb0803
URL: http://source.winehq.org/git/wine.git/?a=commit;h=aa9c78170363699491c1abe3efa45b2100eb0803
Author: Alexandre Julliard <julliard at winehq.org>
Date: Fri May 28 00:09:21 2010 +0200
Revert "gdi32: Pre-multiply RGB values by alpha for subpixel font rendering."
This reverts commit aff0eac21b7d66a0ba4869cade6368a988ab34ee. The RGB
values are already alpha values, they don't need to be pre-multiplied.
---
dlls/gdi32/freetype.c | 19 ++++++++-----------
1 files changed, 8 insertions(+), 11 deletions(-)
diff --git a/dlls/gdi32/freetype.c b/dlls/gdi32/freetype.c
index 53732c4..ddb3d24 100644
--- a/dlls/gdi32/freetype.c
+++ b/dlls/gdi32/freetype.c
@@ -5025,22 +5025,19 @@ DWORD WineEngGetGlyphOutline(GdiFont *incoming_font, UINT glyph, UINT format,
{
for ( x = 0; x < src_width / hmul; x++ )
{
- unsigned int alpha = (src[hmul * x + rgb_interval * 0] +
- src[hmul * x + rgb_interval * 1] +
- src[hmul * x + rgb_interval * 2]) / 3;
if ( rgb )
{
- dst[x] = ((src[hmul * x + rgb_interval * 0] * alpha / 255) << 16) |
- ((src[hmul * x + rgb_interval * 1] * alpha / 255) << 8) |
- ((src[hmul * x + rgb_interval * 2] * alpha / 255) << 0) |
- (alpha << 24);
+ dst[x] = ((unsigned int)src[hmul * x + rgb_interval * 0] << 16) |
+ ((unsigned int)src[hmul * x + rgb_interval * 1] << 8) |
+ ((unsigned int)src[hmul * x + rgb_interval * 2] << 0) |
+ ((unsigned int)src[hmul * x + rgb_interval * 1] << 24) ;
}
else
{
- dst[x] = ((src[hmul * x + rgb_interval * 2] * alpha / 255) << 16) |
- ((src[hmul * x + rgb_interval * 1] * alpha / 255) << 8) |
- ((src[hmul * x + rgb_interval * 0] * alpha / 255) << 0) |
- (alpha << 24);
+ dst[x] = ((unsigned int)src[hmul * x + rgb_interval * 2] << 16) |
+ ((unsigned int)src[hmul * x + rgb_interval * 1] << 8) |
+ ((unsigned int)src[hmul * x + rgb_interval * 0] << 0) |
+ ((unsigned int)src[hmul * x + rgb_interval * 1] << 24) ;
}
}
src += src_pitch * vmul;
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