1 files changed, 24 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/build/CorrectSwizzle1_frag.frag b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/build/CorrectSwizzle1_frag.frag
new file mode 100644
index 0000000000..9226f186c1
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/build/CorrectSwizzle1_frag.frag
@@ -0,0 +1,24 @@
+
+/*
+Copyright (c) 2019 The Khronos Group Inc.
+Use of this source code is governed by an MIT-style license that can be
+found in the LICENSE.txt file.
+*/
+
+
+#ifdef GL_ES
+precision mediump float;
+#endif
+void main()
+{
+    vec2 v = vec2(1,5);
+    // at the end of next statement, values in
+    // v.x = 12, v.y = 12
+    v.xy += v.yx += v.xy;
+    // v1 and v2, both are initialized with 12
+    vec2 v1 = v, v2 = v;
+
+    v1.xy += v2.yx += ++(v.xy);  // v1 = 37, v2 = 25 each
+    v1.xy += v2.yx += (v.xy)++;  // v1 = 75, v2 = 38 each
+    gl_FragColor = vec4(v1,v2);  // 75, 75, 38, 38
+}