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Add RenderAddTraps. Rewrite trapezoid rendering code.

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This commit is contained in:
Keith Packard
2004-08-06 23:42:10 +00:00
parent e847bcda08
commit 196aafb19a
15 changed files with 1052 additions and 1594 deletions
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33
render/mipict.c
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@@ -456,6 +456,35 @@ miFillColor (CARD32 pixel, int bits)
return (CARD16) pixel;
}
Bool
miIsSolidAlpha (PicturePtr pSrc)
{
ScreenPtr pScreen = pSrc->pDrawable->pScreen;
char line[1];
/* Alpha-only */
if (PICT_FORMAT_TYPE (pSrc->format) != PICT_TYPE_A)
return FALSE;
/* repeat */
if (!pSrc->repeat)
return FALSE;
/* 1x1 */
if (pSrc->pDrawable->width != 1 || pSrc->pDrawable->height != 1)
return FALSE;
line[0] = 1;
(*pScreen->GetImage) (pSrc->pDrawable, 0, 0, 1, 1, ZPixmap, ~0L, line);
switch (pSrc->pDrawable->bitsPerPixel) {
case 1:
return (CARD8) line[0] == 1 || (CARD8) line[0] == 0x80;
case 4:
return (CARD8) line[0] == 0xf || (CARD8) line[0] == 0xf0;
case 8:
return (CARD8) line[0] == 0xff;
default:
return FALSE;
}
}
void
miRenderPixelToColor (PictFormatPtr format,
CARD32 pixel,
@@ -516,5 +545,9 @@ miPictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
ps->TriStrip = miTriStrip;
ps->TriFan = miTriFan;
ps->RasterizeTrapezoid = 0; /* requires DDX support */
ps->AddTraps = 0; /* requires DDX support */
ps->AddTriangles = 0; /* requires DDX support */
return TRUE;
}