--- /dev/null	2019-06-19 14:03:09.000000000 +0530
+++ new/src/java.desktop/macosx/native/libawt_lwawt/java2d/metal/MTLUtils.m	2019-06-19 14:03:09.000000000 +0530
@@ -0,0 +1,47 @@
+#include "MTLUtils.h"
+
+#include <jni.h>
+#include <simd/simd.h>
+#include "common.h"
+#include "Trace.h"
+
+extern void J2dTraceImpl(int level, jboolean cr, const char *string, ...);
+void J2dTraceTraceVector(simd_float4 pt) {
+    J2dTraceImpl(J2D_TRACE_VERBOSE, JNI_FALSE, "[%lf %lf %lf %lf]", pt.x, pt.y, pt.z, pt.w);
+}
+
+void checkTransform(float * position, simd_float4x4 transform4x4) {
+    J2dTraceImpl(J2D_TRACE_VERBOSE, JNI_FALSE, "check transform: ");
+
+    simd_float4 fpt = simd_make_float4(position[0], position[1], position[2], 1.f);
+    simd_float4 fpt_trans = simd_mul(transform4x4, fpt);
+    J2dTraceTraceVector(fpt);
+    J2dTraceImpl(J2D_TRACE_VERBOSE, JNI_FALSE, "  ===>>>  ");
+    J2dTraceTraceVector(fpt_trans);
+    J2dTraceLn(J2D_TRACE_VERBOSE, " ");
+}
+
+static void traceMatrix(simd_float4x4 * mtx) {
+    for (int row = 0; row < 4; ++row) {
+        J2dTraceLn4(J2D_TRACE_VERBOSE, "  [%lf %lf %lf %lf]",
+                    mtx->columns[0][row], mtx->columns[1][row], mtx->columns[2][row], mtx->columns[3][row]);
+    }
+}
+
+void traceRaster(char * p, int width, int height, int stride) {
+    for (int y = 0; y < height; ++y) {
+        for (int x = 0; x < width; ++x) {
+            char pix0 = p[y*stride + x*4];
+            char pix1 = p[y*stride + x*4 + 1];
+            char pix2 = p[y*stride + x*4 + 2];
+            char pix3 = p[y*stride + x*4 + 3];
+            J2dTrace4(J2D_TRACE_INFO, "[%d,%d,%d,%d], ", pix0, pix1, pix2, pix3);
+        }
+        J2dTraceLn(J2D_TRACE_INFO, "");
+    }
+}
+
+void tracePoints(jint nPoints, jint *xPoints, jint *yPoints) {
+    for (int i = 0; i < nPoints; i++)
+        J2dTraceLn2(J2D_TRACE_INFO, "\t(%d, %d)", *(xPoints++), *(yPoints++));
+}