diff options
Diffstat (limited to 'src/Tri.c')
| -rw-r--r-- | src/Tri.c | 167 |
1 files changed, 167 insertions, 0 deletions
diff --git a/src/Tri.c b/src/Tri.c new file mode 100644 index 0000000..ead95a3 --- /dev/null +++ b/src/Tri.c @@ -0,0 +1,167 @@ +/* + * $XFree86: xc/lib/Xrender/Tri.c,v 1.3 2002/11/05 23:22:35 keithp Exp $ + * + * 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. + */ + +#include "Xrenderint.h" + +void +XRenderCompositeTriangles (Display *dpy, + int op, + Picture src, + Picture dst, + _Xconst XRenderPictFormat *maskFormat, + int xSrc, + int ySrc, + _Xconst XTriangle *triangles, + int ntriangle) +{ + XExtDisplayInfo *info = XRenderFindDisplay (dpy); + xRenderTrianglesReq *req; + int n; + long len; + + RenderSimpleCheckExtension (dpy, info); + LockDisplay(dpy); + while (ntriangle) + { + GetReq(RenderTriangles, req); + req->reqType = info->codes->major_opcode; + req->renderReqType = X_RenderTriangles; + req->op = (CARD8) op; + req->src = src; + req->dst = dst; + req->maskFormat = maskFormat ? maskFormat->id : 0; + req->xSrc = xSrc; + req->ySrc = ySrc; + n = ntriangle; + len = ((long) n) * (SIZEOF (xTriangle) >> 2); + if (!dpy->bigreq_size && len > (dpy->max_request_size - req->length)) { + n = (dpy->max_request_size - req->length) / (SIZEOF (xTriangle) >> 2); + len = ((long)n) * (SIZEOF (xTriangle) >> 2); + } + SetReqLen (req, len, len); + len <<= 2; + DataInt32 (dpy, (int *) triangles, len); + ntriangle -= n; + triangles += n; + } + UnlockDisplay(dpy); + SyncHandle(); +} + +void +XRenderCompositeTriStrip (Display *dpy, + int op, + Picture src, + Picture dst, + _Xconst XRenderPictFormat *maskFormat, + int xSrc, + int ySrc, + _Xconst XPointFixed *points, + int npoint) +{ + XExtDisplayInfo *info = XRenderFindDisplay (dpy); + xRenderTriStripReq *req; + int n; + long len; + + RenderSimpleCheckExtension (dpy, info); + LockDisplay(dpy); + while (npoint > 2) + { + GetReq(RenderTriStrip, req); + req->reqType = info->codes->major_opcode; + req->renderReqType = X_RenderTriStrip; + req->op = (CARD8) op; + req->src = src; + req->dst = dst; + req->maskFormat = maskFormat ? maskFormat->id : 0; + req->xSrc = xSrc; + req->ySrc = ySrc; + n = npoint; + len = ((long) n) * (SIZEOF (xPointFixed) >> 2); + if (!dpy->bigreq_size && len > (dpy->max_request_size - req->length)) { + n = (dpy->max_request_size - req->length) / (SIZEOF (xPointFixed) >> 2); + len = ((long)n) * (SIZEOF (xPointFixed) >> 2); + } + SetReqLen (req, len, len); + len <<= 2; + DataInt32 (dpy, (int *) points, len); + npoint -= (n - 2); + points += (n - 2); + } + UnlockDisplay(dpy); + SyncHandle(); +} + +void +XRenderCompositeTriFan (Display *dpy, + int op, + Picture src, + Picture dst, + _Xconst XRenderPictFormat *maskFormat, + int xSrc, + int ySrc, + _Xconst XPointFixed *points, + int npoint) +{ + XExtDisplayInfo *info = XRenderFindDisplay (dpy); + _Xconst XPointFixed *first = points; + xPointFixed *p; + xRenderTriFanReq *req; + int n; + long len; + + RenderSimpleCheckExtension (dpy, info); + LockDisplay(dpy); + points++; + npoint--; + while (npoint > 1) + { + GetReqExtra(RenderTriFan, SIZEOF (xPointFixed), req); + req->reqType = info->codes->major_opcode; + req->renderReqType = X_RenderTriFan; + req->op = (CARD8) op; + req->src = src; + req->dst = dst; + req->maskFormat = maskFormat ? maskFormat->id : 0; + req->xSrc = xSrc; + req->ySrc = ySrc; + p = (xPointFixed *) (req + 1); + p->x = first->x; + p->y = first->y; + n = npoint; + len = ((long) n) * (SIZEOF (xPointFixed) >> 2); + if (!dpy->bigreq_size && len > (dpy->max_request_size - req->length)) { + n = (dpy->max_request_size - req->length) / (SIZEOF (xPointFixed) >> 2); + len = ((long)n) * (SIZEOF (xPointFixed) >> 2); + } + SetReqLen (req, len, len); + len <<= 2; + DataInt32 (dpy, (int *) points, len); + npoint -= (n - 1); + points += (n - 1); + } + UnlockDisplay(dpy); + SyncHandle(); +} |