1 files changed, 33 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/cos/cos_vec3_vert_xvary_ref.vert b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/cos/cos_vec3_vert_xvary_ref.vert
new file mode 100644
index 0000000000..63ebd02500
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/cos/cos_vec3_vert_xvary_ref.vert
@@ -0,0 +1,33 @@
+
+/*
+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.
+*/
+
+
+attribute vec4 gtf_Color;
+attribute vec4 gtf_Vertex;
+uniform mat4 gtf_ModelViewProjectionMatrix;
+varying vec4 color;
+
+void main (void)
+{
+	const float M_PI = 3.14159265358979323846;
+	vec3 c = 2.0 * M_PI * gtf_Color.rgb;
+	float sign = -1.0;
+	vec3 cos_c = vec3(1.0,1.0,1.0);
+	float fact = 1.0;
+
+	// Taylor-Maclaurin series expansion for cosine
+	for(int i = 2; i <= 20; i += 2)
+	{
+		fact *= float(i)*float(i-1);
+		cos_c += sign*pow(c, vec3(float(i),float(i),float(i)))/fact;
+		sign = -sign;
+	}
+
+	color = vec4(0.5 * cos_c + 0.5, 1.0);
+
+	gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
+}