1 files changed, 24 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_float_frag_xvary_ref.frag b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_float_frag_xvary_ref.frag
new file mode 100644
index 0000000000..308e399685
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_float_frag_xvary_ref.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
+varying vec4 color;
+
+void main (void)
+{
+	const float M_PI = 3.14159265358979323846;
+	float c = 0.5 * M_PI * 2.0 * (color.r - 0.5);
+	float o;
+	if(abs(c) < 0.5)   // -45..45
+		o = 0.5 * (sin(c) / cos(c)) + 0.5;
+	else   // 45..90, -45..-90
+		o = 0.5 * (cos(c) / sin(c)) + 0.5;
+	gl_FragColor = vec4(o, 0.0, 0.0, 1.0);
+}