1 files changed, 62 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/sin/sin_vec3_vert_xvary_ref.vert b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/sin/sin_vec3_vert_xvary_ref.vert
new file mode 100644
index 0000000000..962f1d8e9b
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/sin/sin_vec3_vert_xvary_ref.vert
@@ -0,0 +1,62 @@
+
+/*
+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;
+
+float lerp(float a, float b, float s)
+{
+	return a + (b - a) * s;
+}
+
+void main (void)
+{
+	float sinValues[17];
+	sinValues[0] = 0.0;
+	sinValues[1] = 0.382683;
+	sinValues[2] = 0.707107;
+	sinValues[3] = 0.92388;
+	sinValues[4] = 1.0;
+	sinValues[5] = 0.92388;
+	sinValues[6] = 0.707107;
+	sinValues[7] = 0.382683;
+	sinValues[8] = 0.0;
+	sinValues[9] = -0.382683;
+	sinValues[10] = -0.707107;
+	sinValues[11] = -0.92388;
+	sinValues[12] = -1.0;
+	sinValues[13] = -0.923879;
+	sinValues[14] = -0.707107;
+	sinValues[15] = -0.382683;
+	sinValues[16] = 0.0;
+
+	const float M_PI = 3.14159265358979323846;
+	vec3 c = 2.0 * M_PI * gtf_Color.rgb;
+	float sign = 1.0;
+
+	vec3 sin_c = vec3(0.0);
+	float fact;
+	float fact_of;
+
+	// Taylors series expansion for sin
+	for(int i = 0; i < 12; i++)
+	{
+		fact = 1.0;
+		for(int j = 2; j <= 23; j++)
+			if (j <= 2 * i + 1)
+				fact *= float(j);
+
+		sin_c += sign * pow(c, vec3(2.0 * float(i) + 1.0)) / fact;
+		sign *= -1.0;
+	}
+
+	color = vec4(0.5 * sin_c + 0.5, 1.0);
+	gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
+}