1 files changed, 30 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_vec2_frag_xvary_ref.frag b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_vec2_frag_xvary_ref.frag
new file mode 100644
index 0000000000..5cf357da34
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/tan/tan_vec2_frag_xvary_ref.frag
@@ -0,0 +1,30 @@
+
+/*
+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;
+	vec2 c = 0.5 * M_PI * 2.0 * (color.rg - 0.5);
+	vec2 o;
+	if(abs(c.r) < 0.5)   // -45..45
+		o.r = 0.5 * (sin(c.r) / cos(c.r)) + 0.5;
+	else   // 45..90, -45..-90
+		o.r = 0.5 * (cos(c.r) / sin(c.r)) + 0.5;
+
+	if(abs(c.g) < 0.5)   // -45..45
+		o.g = 0.5 * (sin(c.g) / cos(c.g)) + 0.5;
+	else   // 45..90, -45..-90
+		o.g = 0.5 * (cos(c.g) / sin(c.g)) + 0.5;
+
+	gl_FragColor = vec4(o, 0.0, 1.0);
+}