test: Exercise copyplane

Reported-by: Omar Sandoval
References: https://bugs.freedesktop.org/show_bug.cgi?id=91499
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

test/.gitignore

@@ -1,5 +1,6 @@
 basic-copyarea
 basic-copyarea-size
+basic-copyplane
 basic-fillrect
 basic-putimage
 basic-lines

test/Makefile.am

@@ -5,6 +5,7 @@ stress_TESTS = \
 	basic-rectangle \
 	basic-string \
 	basic-copyarea \
+	basic-copyplane \
 	basic-copyarea-size \
 	basic-putimage \
 	basic-lines \

test/basic-copyplane.c

@@ -0,0 +1,99 @@
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <X11/Xutil.h> /* for XDestroyImage */
+#include <pixman.h> /* for pixman blt functions */
+
+#include "test.h"
+
+static uint8_t clock_bits[] = {0x3C, 0x5E, 0xEF, 0xF7, 0x87, 0xFF, 0x7E, 0x3C};
+
+/* https://bugs.freedesktop.org/show_bug.cgi?id=91499 */
+static void draw_clock(struct test_display *t, Drawable d,
+		       uint8_t alu, int x, int y, uint32_t fg, uint32_t bg)
+{
+	Pixmap pixmap;
+	XGCValues val;
+	GC gc;
+
+	val.graphics_exposures = 0;
+	val.function = alu;
+	val.foreground = fg;
+	val.background = fg;
+
+	gc = XCreateGC(t->dpy, d,
+		       GCGraphicsExposures | GCForeground | GCBackground | GCFunction,
+		       &val);
+	pixmap = XCreateBitmapFromData(t->dpy, d, (char *)clock_bits, 8, 8);
+
+	XCopyPlane(t->dpy, pixmap, d, gc, 0, 0, 8, 8, x, y, 1);
+
+	XFreePixmap(t->dpy, pixmap);
+	XFreeGC(t->dpy, gc);
+}
+
+static void clear(struct test_display *dpy, struct test_target *tt)
+{
+	XRenderColor render_color = {0};
+	XRenderFillRectangle(dpy->dpy, PictOpClear, tt->picture, &render_color,
+			     0, 0, tt->width, tt->height);
+}
+
+static void clock_tests(struct test *t, int reps, int sets, enum target target)
+{
+	struct test_target out, ref;
+	int r, s;
+
+	printf("Testing clock (%s): ", test_target_name(target));
+	fflush(stdout);
+
+	test_target_create_render(&t->out, target, &out);
+	clear(&t->out, &out);
+
+	test_target_create_render(&t->ref, target, &ref);
+	clear(&t->ref, &ref);
+
+	for (s = 0; s < sets; s++) {
+		for (r = 0; r < reps; r++) {
+			int x = rand() % (out.width - 8);
+			int y = rand() % (out.height - 8);
+			uint8_t alu = rand() % (GXset + 1);
+			uint32_t bg = rand();
+			uint32_t fg = rand();
+
+			draw_clock(&t->out, out.draw, alu, x, y, fg, bg);
+			draw_clock(&t->ref, ref.draw, alu, x, y, fg, bg);
+		}
+
+		test_compare(t,
+			     out.draw, out.format,
+			     ref.draw, ref.format,
+			     0, 0, out.width, out.height,
+			     "");
+	}
+
+	printf("passed [%d iterations x %d]\n", reps, sets);
+
+	test_target_destroy_render(&t->out, &out);
+	test_target_destroy_render(&t->ref, &ref);
+}
+
+int main(int argc, char **argv)
+{
+	struct test test;
+	int i;
+
+	test_init(&test, argc, argv);
+
+	for (i = 0; i <= DEFAULT_ITERATIONS; i++) {
+		int reps = REPS(i), sets = SETS(i);
+		enum target t;
+
+		for (t = TARGET_FIRST; t <= TARGET_LAST; t++) {
+			clock_tests(&test, reps, sets, t);
+		}
+	}
+
+	return 0;
+}