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render: Delete PictureGradientColor() 

PictureGradientColor(), INTERPOLATE_PIXEL_256() and premultiply() are
not used by anything.

Reviewed-by: Keith Packard <keithp@keithp.com>
Signed-off-by: Soren Sandmann <ssp@redhat.com>
This commit is contained in:
Søren Sandmann Pedersen 2011-03-28 20:59:34 -04:00
parent 61a92a78cd
commit b0d84f9439
2 changed files with 0 additions and 50 deletions
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45
render/picture.c
View File

@ -811,51 +811,6 @@ static CARD32 xRenderColorToCard32(xRenderColor c)
(c.blue >> 8);
}
static unsigned int premultiply(unsigned int x)
{
unsigned int a = x >> 24;
unsigned int t = (x & 0xff00ff) * a + 0x800080;
t = (t + ((t >> 8) & 0xff00ff)) >> 8;
t &= 0xff00ff;
x = ((x >> 8) & 0xff) * a + 0x80;
x = (x + ((x >> 8) & 0xff));
x &= 0xff00;
x |= t | (a << 24);
return x;
}
static unsigned int INTERPOLATE_PIXEL_256(unsigned int x, unsigned int a,
unsigned int y, unsigned int b)
{
CARD32 t = (x & 0xff00ff) * a + (y & 0xff00ff) * b;
t >>= 8;
t &= 0xff00ff;
x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b;
x &= 0xff00ff00;
x |= t;
return x;
}
CARD32
PictureGradientColor (PictGradientStopPtr stop1,
PictGradientStopPtr stop2,
CARD32 x)
{
CARD32 current_color, next_color;
int dist, idist;
current_color = xRenderColorToCard32 (stop1->color);
next_color = xRenderColorToCard32 (stop2->color);
dist = (int) (256 * (x - stop1->x) / (stop2->x - stop1->x));
idist = 256 - dist;
return premultiply (INTERPOLATE_PIXEL_256 (current_color, idist,
next_color, dist));
}
static void initGradient(SourcePictPtr pGradient, int stopCount,
xFixed *stopPoints, xRenderColor *stopColors, int *error)
{

5
render/picturestr.h
View File

@ -614,11 +614,6 @@ CompositeTriFan (CARD8 op,
int npoints,
xPointFixed *points);
extern _X_EXPORT CARD32
PictureGradientColor (PictGradientStopPtr stop1,
PictGradientStopPtr stop2,
CARD32 x);
extern _X_EXPORT void RenderExtensionInit (void);
Bool