d031df2719
Fixes a display bug seenby ajacoutot@, ok jsg@ and kettenis@. newer X.Org (2.99.917 or master) version cause corruption on older machines (X40, i965), probably caused by a bug in our kernel, under investigation by kettenis@.
105 lines
2.3 KiB
C
105 lines
2.3 KiB
C
#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <X11/Xutil.h> /* for XDestroyImage */
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#include "test.h"
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#define SIZE 20000
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struct draw {
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Pixmap a, b;
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GC gc;
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XRenderPictFormat *format;
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};
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static void target_init(struct test_display *t, struct draw *tt, int size)
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{
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XGCValues val;
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tt->a = XCreatePixmap(t->dpy, DefaultRootWindow(t->dpy),
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size, size, 32);
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tt->b = XCreatePixmap(t->dpy, DefaultRootWindow(t->dpy),
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size, size, 32);
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val.graphics_exposures = 0;
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tt->gc = XCreateGC(t->dpy, tt->a, GCGraphicsExposures, &val);
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tt->format = XRenderFindStandardFormat(t->dpy, PictStandardARGB32);
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val.foreground = 0xffff0000;
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XChangeGC(t->dpy, tt->gc, GCForeground, &val);
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XFillRectangle(t->dpy, tt->a, tt->gc, 0, 0, size, size);
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val.foreground = 0xff0000ff;
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XChangeGC(t->dpy, tt->gc, GCForeground, &val);
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XFillRectangle(t->dpy, tt->b, tt->gc, 0, 0, size, size);
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}
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static void target_fini(struct test_display *t, struct draw *tt)
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{
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XFreePixmap(t->dpy, tt->a);
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XFreePixmap(t->dpy, tt->b);
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}
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int main(int argc, char **argv)
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{
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struct test test;
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struct draw out, ref;
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int size, i;
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test_init(&test, argc, argv);
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/* Copy back and forth betwenn two pixmaps, gradually getting larger */
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for (size = 1; size <= SIZE; size = (size * 3 + 1) / 2) {
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target_init(&test.out, &out, size);
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target_init(&test.ref, &ref, size);
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printf("size=%d\n", size);
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for (i = 0; i <= DEFAULT_ITERATIONS; i++) {
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int reps = REPS(i);
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do {
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int sx = rand() % (2*size) - size;
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int sy = rand() % (2*size) - size;
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int dx = rand() % (2*size) - size;
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int dy = rand() % (2*size) - size;
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int order = rand() & 1;
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XCopyArea(test.out.dpy,
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order ? out.a : out.b,
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(!order) ? out.a : out.b,
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out.gc,
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sx, sy,
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size, size,
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dx, dy);
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XCopyArea(test.ref.dpy,
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order ? ref.a : ref.b,
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(!order) ? ref.a : ref.b,
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ref.gc,
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sx, sy,
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size, size,
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dx, dy);
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} while (--reps);
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}
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test_compare(&test,
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out.a, out.format,
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ref.a, ref.format,
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0, 0, size, size,
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"");
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test_compare(&test,
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out.b, out.format,
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ref.b, ref.format,
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0, 0, size, size,
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"");
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target_fini(&test.out, &out);
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target_fini(&test.ref, &ref);
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}
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return 0;
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}
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