Signed-off-by: Alex Henrie <alexhenrie24(a)gmail.com>
---
For 0 to map to 0 and 255 to map to 65535, the value must be multiplied
by 257, not 256. The incorrect factor would cause the color #FFFFFF to
become #FEFEFE.
v2: Also correct reverse mapping
---
dlls/winex11.drv/palette.c | 42 ++++++++++++++++++++------------------
1 file changed, 22 insertions(+), 20 deletions(-)
diff --git a/dlls/winex11.drv/palette.c b/dlls/winex11.drv/palette.c
index 25bdb5f2bf..06d02c300a 100644
--- a/dlls/winex11.drv/palette.c
+++ b/dlls/winex11.drv/palette.c
@@ -293,19 +293,19 @@ static BOOL X11DRV_PALETTE_BuildPrivateMap( const PALETTEENTRY *sys_pal_template
{
if( i < NB_RESERVED_COLORS/2 )
{
- color.red = sys_pal_template[i].peRed * 65535 / 255;
- color.green = sys_pal_template[i].peGreen * 65535 / 255;
- color.blue = sys_pal_template[i].peBlue * 65535 / 255;
- COLOR_sysPal[i] = sys_pal_template[i];
+ color.red = sys_pal_template[i].peRed * (65535 / 255);
+ color.green = sys_pal_template[i].peGreen * (65535 / 255);
+ color.blue = sys_pal_template[i].peBlue * (65535 / 255);
+ COLOR_sysPal[i] = sys_pal_template[i];
COLOR_sysPal[i].peFlags |= PC_SYS_USED;
}
else if( i >= palette_size - NB_RESERVED_COLORS/2 )
{
- int j = NB_RESERVED_COLORS + i - palette_size;
- color.red = sys_pal_template[j].peRed * 65535 / 255;
- color.green = sys_pal_template[j].peGreen * 65535 / 255;
- color.blue = sys_pal_template[j].peBlue * 65535 / 255;
- COLOR_sysPal[i] = sys_pal_template[j];
+ int j = NB_RESERVED_COLORS + i - palette_size;
+ color.red = sys_pal_template[j].peRed * (65535 / 255);
+ color.green = sys_pal_template[j].peGreen * (65535 / 255);
+ color.blue = sys_pal_template[j].peBlue * (65535 / 255);
+ COLOR_sysPal[i] = sys_pal_template[j];
COLOR_sysPal[i].peFlags |= PC_SYS_USED;
}
@@ -405,9 +405,9 @@ static BOOL X11DRV_PALETTE_BuildSharedMap( const PALETTEENTRY *sys_pal_template
for( c.pixel = 0, diff = 0x7fffffff; c.pixel < max; c.pixel += step )
{
XQueryColor(gdi_display, default_colormap, &c);
- r = (c.red - color.red)>>8;
- g = (c.green - color.green)>>8;
- b = (c.blue - color.blue)>>8;
+ r = (c.red - color.red) / (65535 / 255);
+ g = (c.green - color.green) / (65535 / 255);
+ b = (c.blue - color.blue) / (65535 / 255);
r = r*r + g*g + b*b;
if( r < diff ) { best = c; diff = r; }
}
@@ -633,9 +633,9 @@ static void X11DRV_PALETTE_FillDefaultColors( const PALETTEENTRY *sys_pal_templa
{
XColor color;
color.pixel = (X11DRV_PALETTE_PaletteToXPixel)? X11DRV_PALETTE_PaletteToXPixel[idx] : idx;
- color.red = COLOR_sysPal[idx].peRed << 8;
- color.green = COLOR_sysPal[idx].peGreen << 8;
- color.blue = COLOR_sysPal[idx].peBlue << 8;
+ color.red = COLOR_sysPal[idx].peRed * (65535 / 255);
+ color.green = COLOR_sysPal[idx].peGreen * (65535 / 255);
+ color.blue = COLOR_sysPal[idx].peBlue * (65535 / 255);
color.flags = DoRed | DoGreen | DoBlue;
XStoreColor(gdi_display, default_colormap, &color);
}
@@ -658,7 +658,9 @@ static void X11DRV_PALETTE_FillDefaultColors( const PALETTEENTRY *sys_pal_templa
xc.pixel = i;
XQueryColor(gdi_display, default_colormap, &xc);
- r = xc.red>>8; g = xc.green>>8; b = xc.blue>>8;
+ r = xc.red / (65535 / 255);
+ g = xc.green / (65535 / 255);
+ b = xc.blue / (65535 / 255);
if( xc.pixel < 256 && X11DRV_PALETTE_CheckSysColor( sys_pal_template, RGB(r, g, b)) &&
XAllocColor(gdi_display, default_colormap, &xc) )
@@ -753,7 +755,7 @@ COLORREF X11DRV_PALETTE_ToLogical(X11DRV_PDEVICE *physDev, int pixel)
color.pixel = pixel;
XQueryColor(gdi_display, default_colormap, &color);
- return RGB(color.red >> 8, color.green >> 8, color.blue >> 8);
+ return RGB(color.red / (65535 / 255), color.green / (65535 / 255), color.blue / (65535 / 255));
}
@@ -1156,9 +1158,9 @@ UINT CDECL X11DRV_RealizePalette( PHYSDEV dev, HPALETTE hpal, BOOL primary )
X11DRV_PALETTE_firstFree = X11DRV_PALETTE_freeList[index];
color.pixel = (X11DRV_PALETTE_PaletteToXPixel) ? X11DRV_PALETTE_PaletteToXPixel[index] : index;
- color.red = entries[i].peRed << 8;
- color.green = entries[i].peGreen << 8;
- color.blue = entries[i].peBlue << 8;
+ color.red = entries[i].peRed * (65535 / 255);
+ color.green = entries[i].peGreen * (65535 / 255);
+ color.blue = entries[i].peBlue * (65535 / 255);
color.flags = DoRed | DoGreen | DoBlue;
XStoreColor(gdi_display, default_colormap, &color);
--
2.24.0