diff options
Diffstat (limited to 'xorg-server/render/mitri.c')
| -rw-r--r-- | xorg-server/render/mitri.c | 191 |
1 files changed, 191 insertions, 0 deletions
diff --git a/xorg-server/render/mitri.c b/xorg-server/render/mitri.c new file mode 100644 index 000000000..a92c19b7e --- /dev/null +++ b/xorg-server/render/mitri.c @@ -0,0 +1,191 @@ +/* + * + * Copyright © 2002 Keith Packard, member of The XFree86 Project, Inc. + * + * Permission to use, copy, modify, distribute, and sell this software and its + * documentation for any purpose is hereby granted without fee, provided that + * the above copyright notice appear in all copies and that both that + * copyright notice and this permission notice appear in supporting + * documentation, and that the name of Keith Packard not be used in + * advertising or publicity pertaining to distribution of the software without + * specific, written prior permission. Keith Packard makes no + * representations about the suitability of this software for any purpose. It + * is provided "as is" without express or implied warranty. + * + * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, + * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO + * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, + * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER + * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR + * PERFORMANCE OF THIS SOFTWARE. + */ + +#ifdef HAVE_DIX_CONFIG_H +#include <dix-config.h> +#endif + +#include "scrnintstr.h" +#include "gcstruct.h" +#include "pixmapstr.h" +#include "windowstr.h" +#include "mi.h" +#include "picturestr.h" +#include "mipict.h" + +void +miPointFixedBounds (int npoint, xPointFixed *points, BoxPtr bounds) +{ + bounds->x1 = xFixedToInt (points->x); + bounds->x2 = xFixedToInt (xFixedCeil (points->x)); + bounds->y1 = xFixedToInt (points->y); + bounds->y2 = xFixedToInt (xFixedCeil (points->y)); + points++; + npoint--; + while (npoint-- > 0) + { + INT16 x1 = xFixedToInt (points->x); + INT16 x2 = xFixedToInt (xFixedCeil (points->x)); + INT16 y1 = xFixedToInt (points->y); + INT16 y2 = xFixedToInt (xFixedCeil (points->y)); + + if (x1 < bounds->x1) + bounds->x1 = x1; + else if (x2 > bounds->x2) + bounds->x2 = x2; + if (y1 < bounds->y1) + bounds->y1 = y1; + else if (y2 > bounds->y2) + bounds->y2 = y2; + points++; + } +} + +void +miTriangleBounds (int ntri, xTriangle *tris, BoxPtr bounds) +{ + miPointFixedBounds (ntri * 3, (xPointFixed *) tris, bounds); +} + +void +miTriangles (CARD8 op, + PicturePtr pSrc, + PicturePtr pDst, + PictFormatPtr maskFormat, + INT16 xSrc, + INT16 ySrc, + int ntri, + xTriangle *tris) +{ + ScreenPtr pScreen = pDst->pDrawable->pScreen; + PictureScreenPtr ps = GetPictureScreen(pScreen); + + /* + * Check for solid alpha add + */ + if (op == PictOpAdd && miIsSolidAlpha (pSrc)) + { + (*ps->AddTriangles) (pDst, 0, 0, ntri, tris); + } + else if (maskFormat) + { + BoxRec bounds; + PicturePtr pPicture; + INT16 xDst, yDst; + INT16 xRel, yRel; + + xDst = tris[0].p1.x >> 16; + yDst = tris[0].p1.y >> 16; + + miTriangleBounds (ntri, tris, &bounds); + if (bounds.x2 <= bounds.x1 || bounds.y2 <= bounds.y1) + return; + pPicture = miCreateAlphaPicture (pScreen, pDst, maskFormat, + bounds.x2 - bounds.x1, + bounds.y2 - bounds.y1); + if (!pPicture) + return; + (*ps->AddTriangles) (pPicture, -bounds.x1, -bounds.y1, ntri, tris); + + xRel = bounds.x1 + xSrc - xDst; + yRel = bounds.y1 + ySrc - yDst; + CompositePicture (op, pSrc, pPicture, pDst, + xRel, yRel, 0, 0, bounds.x1, bounds.y1, + bounds.x2 - bounds.x1, bounds.y2 - bounds.y1); + FreePicture (pPicture, 0); + } + else + { + if (pDst->polyEdge == PolyEdgeSharp) + maskFormat = PictureMatchFormat (pScreen, 1, PICT_a1); + else + maskFormat = PictureMatchFormat (pScreen, 8, PICT_a8); + + for (; ntri; ntri--, tris++) + miTriangles (op, pSrc, pDst, maskFormat, xSrc, ySrc, 1, tris); + } +} + +void +miTriStrip (CARD8 op, + PicturePtr pSrc, + PicturePtr pDst, + PictFormatPtr maskFormat, + INT16 xSrc, + INT16 ySrc, + int npoint, + xPointFixed *points) +{ + ScreenPtr pScreen = pDst->pDrawable->pScreen; + PictureScreenPtr ps = GetPictureScreen(pScreen); + xTriangle *tris, *tri; + int ntri; + + if (npoint < 3) + return; + ntri = npoint - 2; + tris = xalloc (ntri * sizeof (xTriangle)); + if (!tris) + return; + for (tri = tris; npoint >= 3; npoint--, points++, tri++) + { + tri->p1 = points[0]; + tri->p2 = points[1]; + tri->p3 = points[2]; + } + (*ps->Triangles) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris); + xfree (tris); +} + +void +miTriFan (CARD8 op, + PicturePtr pSrc, + PicturePtr pDst, + PictFormatPtr maskFormat, + INT16 xSrc, + INT16 ySrc, + int npoint, + xPointFixed *points) +{ + ScreenPtr pScreen = pDst->pDrawable->pScreen; + PictureScreenPtr ps = GetPictureScreen(pScreen); + xTriangle *tris, *tri; + xPointFixed *first; + int ntri; + + if (npoint < 3) + return; + ntri = npoint - 2; + tris = xalloc (ntri * sizeof (xTriangle)); + if (!tris) + return; + first = points++; + for (tri = tris; npoint >= 3; npoint--, points++, tri++) + { + tri->p1 = *first; + tri->p2 = points[0]; + tri->p3 = points[1]; + } + (*ps->Triangles) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntri, tris); + xfree (tris); +} |