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Commit d21dde71 authored by Alexandre Julliard's avatar Alexandre Julliard
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Authors: Chris Morgan <cmorgan@wpi.edu>, James Abbatiello <abbeyj@wpi.edu>

Fixes problems with color drift when switching to/from logical/physical colors.
parent 30eaa59c
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Showing with 9 additions and 6 deletions
graphics/x11drv/palette.c
View file @ d21dde71
...@@ -631,9 +631,9 @@ COLORREF X11DRV_PALETTE_ToLogical(int pixel) ...@@ -631,9 +631,9 @@ COLORREF X11DRV_PALETTE_ToLogical(int pixel)
color.red = (pixel >> X11DRV_PALETTE_Redshift) & X11DRV_PALETTE_Redmax; color.red = (pixel >> X11DRV_PALETTE_Redshift) & X11DRV_PALETTE_Redmax;
color.green = (pixel >> X11DRV_PALETTE_Greenshift) & X11DRV_PALETTE_Greenmax; color.green = (pixel >> X11DRV_PALETTE_Greenshift) & X11DRV_PALETTE_Greenmax;
color.blue = (pixel >> X11DRV_PALETTE_Blueshift) & X11DRV_PALETTE_Bluemax; color.blue = (pixel >> X11DRV_PALETTE_Blueshift) & X11DRV_PALETTE_Bluemax;
return RGB((color.red * 255)/X11DRV_PALETTE_Redmax, return RGB(MulDiv(color.red, 255, X11DRV_PALETTE_Redmax),
(color.green * 255)/X11DRV_PALETTE_Greenmax, MulDiv(color.green, 255, X11DRV_PALETTE_Greenmax),
(color.blue * 255)/X11DRV_PALETTE_Bluemax); MulDiv(color.blue, 255, X11DRV_PALETTE_Bluemax));
} }
/* check if we can bypass X */ /* check if we can bypass X */
...@@ -716,9 +716,12 @@ int X11DRV_PALETTE_ToPhysical( DC *dc, COLORREF color ) ...@@ -716,9 +716,12 @@ int X11DRV_PALETTE_ToPhysical( DC *dc, COLORREF color )
else else
{ {
/* scale each individually and construct the TrueColor pixel value */ /* scale each individually and construct the TrueColor pixel value */
if (X11DRV_PALETTE_Redmax != 255) red = (red * X11DRV_PALETTE_Redmax) / 255; if (X11DRV_PALETTE_Redmax != 255)
if (X11DRV_PALETTE_Greenmax != 255) green = (green * X11DRV_PALETTE_Greenmax) / 255; red = MulDiv(red, X11DRV_PALETTE_Redmax, 255);
if (X11DRV_PALETTE_Bluemax != 255) blue = (blue * X11DRV_PALETTE_Bluemax) / 255; if (X11DRV_PALETTE_Greenmax != 255)
green = MulDiv(green, X11DRV_PALETTE_Greenmax, 255);
if (X11DRV_PALETTE_Bluemax != 255)
blue = MulDiv(blue, X11DRV_PALETTE_Bluemax, 255);
GDI_HEAP_UNLOCK( hPal ); GDI_HEAP_UNLOCK( hPal );
return (red << X11DRV_PALETTE_Redshift) | (green << X11DRV_PALETTE_Greenshift) | (blue << X11DRV_PALETTE_Blueshift); return (red << X11DRV_PALETTE_Redshift) | (green << X11DRV_PALETTE_Greenshift) | (blue << X11DRV_PALETTE_Blueshift);
......
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