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-rw-r--r--do_blt.c594
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diff --git a/do_blt.c b/do_blt.c
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+/* $Xorg: do_blt.c,v 1.4 2000/11/30 12:16:31 pookie Exp $ */
+/*****************************************************************************
+Copyright 1988, 1989 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+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 Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL 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 "x11perf.h"
+#include <stdio.h>
+
+#define NUMPOINTS 100
+
+static Pixmap pix;
+static XImage *image;
+static XPoint points[NUMPOINTS];
+static XSegment *segsa, *segsb;
+
+#define NegMod(x, y) ((y) - (((-x)-1) % (7)) - 1)
+
+void InitBltLines()
+{
+ int i, x, y;
+
+ points[0].x = points[0].y = y = 0;
+ for (i = 1; i != NUMPOINTS/2; i++) {
+ if (i & 1) {
+ points[i].x = WIDTH-1;
+ } else {
+ points[i].x = 0;
+ }
+ y += HEIGHT / (NUMPOINTS/2);
+ points[i].y = y;
+ }
+
+ x = 0;
+ for (i = NUMPOINTS/2; i!= NUMPOINTS; i++) {
+ if (i & 1) {
+ points[i].y = HEIGHT-1;
+ } else {
+ points[i].y = 0;
+ }
+ x += WIDTH / (NUMPOINTS/2);
+ points[i].x = x;
+ }
+}
+
+int InitScroll(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ InitBltLines();
+ XDrawLines(xp->d, xp->w, xp->fggc, points, NUMPOINTS, CoordModeOrigin);
+ return reps;
+}
+
+void DoScroll(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ int i, size, x, y, xorg, yorg, delta;
+
+ size = p->special;
+ xorg = 0; yorg = 0;
+ x = 0; y = 0;
+ if (xp->version == VERSION1_2) {
+ delta = 1;
+ } else {
+ /* Version 1.2 only scrolled up by 1 scanline, which made hardware
+ using page-mode access to VRAM look better on paper than it would
+ perform in a more realistic scroll. So we've changed to scroll by
+ the height of the 6x13 fonts. */
+ delta = 13;
+ }
+
+ for (i = 0; i != reps; i++) {
+ XCopyArea(xp->d, xp->w, xp->w, xp->fggc, x, y + delta,
+ size, size, x, y);
+ y += size;
+ if (y + size + delta > HEIGHT) {
+ yorg += delta;
+ if (yorg >= size || yorg + size + delta > HEIGHT) {
+ yorg = 0;
+ xorg++;
+ if (xorg >= size || xorg + size > WIDTH) {
+ xorg = 0;
+ }
+ }
+ y = yorg;
+ x += size;
+ if (x + size > WIDTH) {
+ x = xorg;
+ }
+ }
+ }
+}
+
+void MidScroll(xp, p)
+ XParms xp;
+ Parms p;
+{
+ XClearWindow(xp->d, xp->w);
+ XDrawLines(xp->d, xp->w, xp->fggc, points, NUMPOINTS, CoordModeOrigin);
+}
+
+void EndScroll(xp, p)
+ XParms xp;
+ Parms p;
+{
+}
+
+static void InitCopyLocations(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ int x1, y1, x2, y2, size, i;
+ int xinc, yinc;
+ int width, height;
+
+ /* Try to exercise all alignments of src and destination equally, as well
+ as all 4 top-to-bottom/bottom-to-top, left-to-right, right-to-left
+ copying directions. Computation done here just to make sure slow
+ machines aren't measuring anything but the XCopyArea calls.
+ */
+ size = p->special;
+ xinc = (size & ~3) + 1;
+ yinc = xinc + 3;
+
+ width = (WIDTH - size) & ~31;
+ height = (HEIGHT - size) & ~31;
+
+ x1 = 0;
+ y1 = 0;
+ x2 = width;
+ y2 = height;
+
+ segsa = (XSegment *)malloc(reps * sizeof(XSegment));
+ segsb = (XSegment *)malloc(reps * sizeof(XSegment));
+ for (i = 0; i != reps; i++) {
+ segsa[i].x1 = x1;
+ segsa[i].y1 = y1;
+ segsa[i].x2 = x2;
+ segsa[i].y2 = y2;
+
+ /* Move x2, y2, location backward */
+ x2 -= xinc;
+ if (x2 < 0) {
+ x2 = NegMod(x2, width);
+ y2 -= yinc;
+ if (y2 < 0) {
+ y2 = NegMod(y2, height);
+ }
+ }
+
+ segsb[i].x1 = x1;
+ segsb[i].y1 = y1;
+ segsb[i].x2 = x2;
+ segsb[i].y2 = y2;
+
+ /* Move x1, y1 location forward */
+ x1 += xinc;
+ if (x1 > width) {
+ x1 %= 32;
+ y1 += yinc;
+ if (y1 > height) {
+ y1 %= 32;
+ }
+ }
+ } /* end for */
+}
+
+
+int InitCopyWin(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ (void) InitScroll(xp, p, reps);
+ InitCopyLocations(xp, p, reps);
+ return reps;
+}
+
+int InitCopyPix(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ GC pixgc;
+ (void) InitCopyWin(xp, p, reps);
+
+ /* Create pixmap to write stuff into, and initialize it */
+ pix = XCreatePixmap(xp->d, xp->w, WIDTH, HEIGHT, xp->vinfo.depth);
+ pixgc = XCreateGC(xp->d, pix, 0, 0);
+ /* need a gc with GXcopy cos pixmaps contain junk on creation. mmm */
+ XCopyArea(xp->d, xp->w, pix, pixgc, 0, 0, WIDTH, HEIGHT, 0, 0);
+ XFreeGC(xp->d, pixgc);
+ return reps;
+}
+
+Bool InitGetImage(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ (void) InitCopyWin(xp, p, reps);
+
+ /* Create image to stuff bits into */
+ image = XGetImage(xp->d, xp->w, 0, 0, WIDTH, HEIGHT, xp->planemask,
+ p->font==0?ZPixmap:XYPixmap);
+ if(image==0){
+ printf("XGetImage failed\n");
+ return False;
+ }
+ return reps;
+}
+
+Bool InitPutImage(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ if(!InitGetImage(xp, p, reps))return False;
+ XClearWindow(xp->d, xp->w);
+ return reps;
+}
+
+static void CopyArea(xp, p, reps, src, dst)
+ XParms xp;
+ Parms p;
+ int reps;
+ Drawable src, dst;
+{
+ int i, size;
+ XSegment *sa, *sb;
+
+ size = p->special;
+ for (sa = segsa, sb = segsb, i = 0; i != reps; i++, sa++, sb++) {
+ XCopyArea(xp->d, src, dst, xp->fggc,
+ sa->x1, sa->y1, size, size, sa->x2, sa->y2);
+ XCopyArea(xp->d, src, dst, xp->fggc,
+ sa->x2, sa->y2, size, size, sa->x1, sa->y1);
+ XCopyArea(xp->d, src, dst, xp->fggc,
+ sb->x2, sb->y2, size, size, sb->x1, sb->y1);
+ XCopyArea(xp->d, src, dst, xp->fggc,
+ sb->x1, sb->y1, size, size, sb->x2, sb->y2);
+ }
+}
+
+void DoCopyWinWin(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ CopyArea(xp, p, reps, xp->w, xp->w);
+}
+
+void DoCopyPixWin(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ CopyArea(xp, p, reps, pix, xp->w);
+}
+
+void DoCopyWinPix(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ CopyArea(xp, p, reps, xp->w, pix);
+ xp->p = pix; /* HardwareSync will now sync on pixmap */
+}
+
+void DoCopyPixPix(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ CopyArea(xp, p, reps, pix, pix);
+ xp->p = pix; /* HardwareSync will now sync on pixmap */
+}
+
+void DoGetImage(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ int i, size;
+ XSegment *sa, *sb;
+ int format;
+
+ size = p->special;
+ format = (p->font == 0) ? ZPixmap : XYPixmap;
+ for (sa = segsa, sb = segsb, i = 0; i != reps; i++, sa++, sb++) {
+ XDestroyImage(image);
+ image = XGetImage(xp->d, xp->w, sa->x1, sa->y1, size, size,
+ xp->planemask, format);
+ if (image) XDestroyImage(image);
+ image = XGetImage(xp->d, xp->w, sa->x2, sa->y2, size, size,
+ xp->planemask, format);
+ if (image) XDestroyImage(image);
+ image = XGetImage(xp->d, xp->w, sb->x2, sb->y2, size, size,
+ xp->planemask, format);
+ if (image) XDestroyImage(image);
+ image = XGetImage(xp->d, xp->w, sb->x1, sb->y1, size, size,
+ xp->planemask, format);
+/*
+
+One might expect XGetSubImage to be slightly faster than XGetImage. Go look
+at the code in Xlib. MIT X11R3 ran approximately 30 times slower for a 500x500
+rectangle.
+
+ (void) XGetSubImage(xp->d, xp->w, sa->x1, sa->y1, size, size,
+ xp->planemask, ZPixmap, image, sa->x2, sa->y2);
+ (void) XGetSubImage(xp->d, xp->w, sa->x2, sa->y2, size, size,
+ xp->planemask, ZPixmap, image, sa->x1, sa->y1);
+ (void) XGetSubImage(xp->d, xp->w, sb->x2, sb->y2, size, size,
+ xp->planemask, ZPixmap, image, sb->x2, sb->y2);
+ (void) XGetSubImage(xp->d, xp->w, sb->x1, sb->y1, size, size,
+ xp->planemask, ZPixmap, image, sb->x2, sb->y2);
+*/
+ }
+}
+
+void DoPutImage(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ int i, size;
+ XSegment *sa, *sb;
+
+ size = p->special;
+ for (sa = segsa, sb = segsb, i = 0; i != reps; i++, sa++, sb++) {
+ XPutImage(xp->d, xp->w, xp->fggc, image,
+ sa->x1, sa->y1, sa->x2, sa->y2, size, size);
+ XPutImage(xp->d, xp->w, xp->fggc, image,
+ sa->x2, sa->y2, sa->x1, sa->y1, size, size);
+ XPutImage(xp->d, xp->w, xp->fggc, image,
+ sb->x2, sb->y2, sb->x2, sb->y2, size, size);
+ XPutImage(xp->d, xp->w, xp->fggc, image,
+ sb->x1, sb->y1, sb->x2, sb->y2, size, size);
+ }
+}
+
+#ifdef MITSHM
+
+#include <sys/types.h>
+#include <sys/ipc.h>
+#include <sys/shm.h>
+#include <X11/extensions/XShm.h>
+
+static XImage shm_image;
+static XShmSegmentInfo shm_info;
+
+static int haderror;
+static int (*origerrorhandler)();
+shmerrorhandler(d,e)
+Display *d;
+XErrorEvent *e;
+{
+ haderror++;
+ if(e->error_code==BadAccess)fprintf(stderr,"failed to attach shared memory\n");
+ else (*origerrorhandler)(d,e);
+}
+int InitShmPutImage (xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ int image_size;
+
+ if(!InitGetImage(xp, p, reps))return False;
+ if (!XShmQueryExtension(xp->d)) {
+ /*
+ * Clean up here because cleanup function is not called if this
+ * function fails
+ */
+ if (image)
+ XDestroyImage(image);
+ image = NULL;
+ free(segsa);
+ free(segsb);
+ return False;
+ }
+ XClearWindow(xp->d, xp->w);
+ shm_image = *image;
+ image_size = image->bytes_per_line * image->height;
+ /* allow XYPixmap choice: */
+ if(p->font)image_size *= xp->vinfo.depth;
+ shm_info.shmid = shmget(IPC_PRIVATE, image_size, IPC_CREAT|0777);
+ if (shm_info.shmid < 0)
+ {
+ /*
+ * Clean up here because cleanup function is not called if this
+ * function fails
+ */
+ if (image)
+ XDestroyImage(image);
+ image = NULL;
+ free(segsa);
+ free(segsb);
+ perror ("shmget");
+ return False;
+ }
+ shm_info.shmaddr = (char *) shmat(shm_info.shmid, 0, 0);
+ if (shm_info.shmaddr == ((char *) -1))
+ {
+ /*
+ * Clean up here because cleanup function is not called if this
+ * function fails
+ */
+ if (image)
+ XDestroyImage(image);
+ image = NULL;
+ free(segsa);
+ free(segsb);
+ perror ("shmat");
+ shmctl (shm_info.shmid, IPC_RMID, 0);
+ return False;
+ }
+ shm_info.readOnly = True;
+ XSync(xp->d,True);
+ haderror = False;
+ origerrorhandler = XSetErrorHandler(shmerrorhandler);
+ XShmAttach (xp->d, &shm_info);
+ XSync(xp->d,True); /* wait for error or ok */
+ XSetErrorHandler(origerrorhandler);
+ if(haderror){
+ /*
+ * Clean up here because cleanup function is not called if this
+ * function fails
+ */
+ if (image)
+ XDestroyImage(image);
+ image = NULL;
+ free(segsa);
+ free(segsb);
+ if(shmdt (shm_info.shmaddr)==-1)
+ perror("shmdt:");
+ if(shmctl (shm_info.shmid, IPC_RMID, 0)==-1)
+ perror("shmctl rmid:");
+ return False;
+ }
+ shm_image.data = shm_info.shmaddr;
+ memmove( shm_image.data, image->data, image_size);
+ shm_image.obdata = (char *) &shm_info;
+ return reps;
+}
+
+void DoShmPutImage(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ int i, size;
+ XSegment *sa, *sb;
+
+ size = p->special;
+ for (sa = segsa, sb = segsb, i = 0; i != reps; i++, sa++, sb++) {
+ XShmPutImage(xp->d, xp->w, xp->fggc, &shm_image,
+ sa->x1, sa->y1, sa->x2, sa->y2, size, size, False);
+ XShmPutImage(xp->d, xp->w, xp->fggc, &shm_image,
+ sa->x2, sa->y2, sa->x1, sa->y1, size, size, False);
+ XShmPutImage(xp->d, xp->w, xp->fggc, &shm_image,
+ sb->x2, sb->y2, sb->x2, sb->y2, size, size, False);
+ XShmPutImage(xp->d, xp->w, xp->fggc, &shm_image,
+ sb->x1, sb->y1, sb->x2, sb->y2, size, size, False);
+ }
+}
+
+void EndShmPutImage(xp, p)
+ XParms xp;
+ Parms p;
+{
+ void EndGetImage();
+
+ EndGetImage (xp, p);
+ XShmDetach (xp->d, &shm_info);
+ XSync(xp->d, False); /* need server to detach so can remove id */
+ if(shmdt (shm_info.shmaddr)==-1)
+ perror("shmdt:");
+ if(shmctl (shm_info.shmid, IPC_RMID, 0)==-1)
+ perror("shmctl rmid:");
+}
+
+#endif
+
+
+void MidCopyPix(xp, p)
+ XParms xp;
+ Parms p;
+{
+ XClearWindow(xp->d, xp->w);
+}
+
+void EndCopyWin(xp, p)
+ XParms xp;
+ Parms p;
+{
+ EndScroll(xp, p);
+ free(segsa);
+ free(segsb);
+}
+
+void EndCopyPix(xp, p)
+ XParms xp;
+ Parms p;
+{
+ EndCopyWin(xp, p);
+ XFreePixmap(xp->d, pix);
+ /*
+ * Ensure that the next test doesn't try and sync on the pixmap
+ */
+ xp->p = (Pixmap)0;
+}
+
+void EndGetImage(xp, p)
+ XParms xp;
+ Parms p;
+{
+ EndCopyWin(xp, p);
+ if (image) XDestroyImage(image);
+}
+
+Bool InitCopyPlane(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ XGCValues gcv;
+ GC pixgc;
+
+ InitBltLines();
+ InitCopyLocations(xp, p, reps);
+
+ /* Create pixmap to write stuff into, and initialize it */
+ pix = XCreatePixmap(xp->d, xp->w, WIDTH, HEIGHT,
+ p->font==0 ? 1 : xp->vinfo.depth);
+ gcv.graphics_exposures = False;
+ gcv.foreground = 0;
+ gcv.background = 1;
+ pixgc = XCreateGC(xp->d, pix,
+ GCForeground | GCBackground | GCGraphicsExposures, &gcv);
+ XFillRectangle(xp->d, pix, pixgc, 0, 0, WIDTH, HEIGHT);
+ gcv.foreground = 1;
+ gcv.background = 0;
+ XChangeGC(xp->d, pixgc, GCForeground | GCBackground, &gcv);
+ XDrawLines(xp->d, pix, pixgc, points, NUMPOINTS, CoordModeOrigin);
+ XFreeGC(xp->d, pixgc);
+
+ return reps;
+}
+
+void DoCopyPlane(xp, p, reps)
+ XParms xp;
+ Parms p;
+ int reps;
+{
+ int i, size;
+ XSegment *sa, *sb;
+
+ size = p->special;
+ for (sa = segsa, sb = segsb, i = 0; i != reps; i++, sa++, sb++) {
+ XCopyPlane(xp->d, pix, xp->w, xp->fggc,
+ sa->x1, sa->y1, size, size, sa->x2, sa->y2, 1);
+ XCopyPlane(xp->d, pix, xp->w, xp->fggc,
+ sa->x2, sa->y2, size, size, sa->x1, sa->y1, 1);
+ XCopyPlane(xp->d, pix, xp->w, xp->fggc,
+ sb->x2, sb->y2, size, size, sb->x1, sb->y1, 1);
+ XCopyPlane(xp->d, pix, xp->w, xp->fggc,
+ sb->x1, sb->y1, size, size, sb->x2, sb->y2, 1);
+ }
+}
+
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