ref: b76e8ecc732cb311ceee6fd6c807b7e784d3fe31
dir: /sys/src/ape/X11/lib/Xrender/Tri.c/
/* * * Copyright © 2002 Keith Packard * * 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_CONFIG_H #include <config.h> #endif #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) { XRenderExtDisplayInfo *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) { XRenderExtDisplayInfo *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) { XRenderExtDisplayInfo *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(); }