1 files changed, 118 insertions, 0 deletions
diff --git a/test/test.h b/test/test.h
new file mode 100644
index 00000000..b46dbb5d
--- /dev/null
+++ b/test/test.h
@@ -0,0 +1,118 @@
+#ifndef TEST_H
+#define TEST_H
+
+#include <stdint.h>
+#include <X11/Xlib.h>
+#include <X11/extensions/XShm.h>
+#include <X11/extensions/Xrender.h>
+
+#define DEFAULT_ITERATIONS 20
+
+enum target {
+	ROOT,
+	CHILD,
+	PIXMAP,
+};
+#define TARGET_FIRST ROOT
+#define TARGET_LAST PIXMAP
+
+enum mask {
+	MASK_NONE,
+	MASK_NONE_AA,
+	MASK_A1,
+	MASK_A8,
+};
+
+struct test {
+	struct test_display {
+		Display *dpy;
+		Window root;
+		XShmSegmentInfo shm;
+		int max_shm_size;
+		int width, height;
+		XRenderPictFormat *format;
+	} real, ref;
+};
+
+void die(const char *fmt, ...);
+
+#define die_unless(expr) do{ if (!(expr)) die("verification failed: %s\n", #expr); } while(0)
+
+void test_init(struct test *test, int argc, char **argv);
+
+void test_compare(struct test *real,
+		  Drawable real_draw, XRenderPictFormat *real_format,
+		  Drawable ref_draw, XRenderPictFormat *ref_format,
+		  int x, int y, int w, int h);
+
+#define MAX_DELTA 3
+int pixel_difference(uint32_t a, uint32_t b);
+
+static inline int pixel_equal(int depth, uint32_t a, uint32_t b)
+{
+	uint32_t mask;
+
+	if (depth == 32)
+		mask = 0xffffffff;
+	else
+		mask = (1 << depth) - 1;
+
+	a &= mask;
+	b &= mask;
+
+	if (a == b)
+		return 1;
+
+	return pixel_difference(a, b) < MAX_DELTA;
+}
+
+void
+test_init_image(XImage *ximage,
+		XShmSegmentInfo *shm,
+		XRenderPictFormat *format,
+		int width, int height);
+
+const char *test_target_name(enum target target);
+
+struct test_target {
+	struct test_display *dpy;
+	Drawable draw;
+	GC gc;
+	XRenderPictFormat *format;
+	Picture picture;
+	int width, height;
+	enum target target;
+};
+
+void test_target_create_render(struct test_display *dpy,
+			       enum target target,
+			       struct test_target *tt);
+void test_target_destroy_render(struct test_display *dpy,
+				struct test_target *tt);
+
+static inline uint32_t depth_mask(int depth)
+{
+	if (depth == 32)
+		return 0xffffffff;
+	else
+		return (1 << depth) - 1;
+}
+
+static inline uint32_t color(uint8_t red, uint8_t green, uint8_t blue, uint8_t alpha)
+{
+	uint16_t ra = red * alpha;
+	uint16_t ga = green * alpha;
+	uint16_t ba = blue * alpha;
+
+	return alpha << 24 | ra >> 8 << 16 | ga >> 8 << 8 | ba >> 8;
+}
+
+#ifndef MAX
+#define MAX(a,b) ((a) > (b) ? (a) : (b))
+#endif
+
+#ifndef ARRAY_SIZE
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
+#endif
+
+#endif