1 files changed, 50 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/glsl/bugs/struct-constructor-highp-bug.html b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/bugs/struct-constructor-highp-bug.html
new file mode 100644
index 0000000000..afb72e1916
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance/glsl/bugs/struct-constructor-highp-bug.html
@@ -0,0 +1,50 @@
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<title>Struct constructor highp bug.</title>
+<link rel="stylesheet" href="../../../resources/js-test-style.css"/>
+<script src="../../../js/js-test-pre.js"></script>
+<script src="../../../js/webgl-test-utils.js"></script>
+<script src="../../../js/glsl-conformance-test.js"></script>
+</head>
+<body>
+<div id="description"></div>
+<div id="console"></div>
+<script id="fshader" type="x-shader/x-fragment">
+#ifdef GL_FRAGMENT_PRECISION_HIGH
+precision highp float;
+#else
+precision mediump float;
+#endif
+
+struct Test {
+  vec3 color;
+};
+
+void main() {
+  vec3 color = vec3( 0.0, 1.0, 0.0 );
+  Test test = Test( color );
+  gl_FragColor = vec4( test.color, 1.0 );
+}
+</script>
+
+<script type="application/javascript">
+"use strict";
+description("Struct constructors should evaluate properly.");
+debug("Regression test for Three.js bug worked around in <a href='https://github.com/mrdoob/three.js/pull/7556'>https://github.com/mrdoob/three.js/pull/7556</a> that reproduced on Nexus 4 and 5 (Adreno 320 and 330).");
+debug("When high precision is used in the fragment shader on these devices, bugs occur in evaluation of structs' constructors. Thanks to Mr. doob for the reduced test case.");
+
+GLSLConformanceTester.runRenderTests([
+{
+  fShaderId: 'fshader',
+  fShaderSuccess: true,
+  linkSuccess: true,
+  passMsg: "Struct contstructor evaluation"
+}
+]);
+
+</script>
+
+</body>
+</html>