1 files changed, 56 insertions, 0 deletions
diff --git a/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/mat/mat2_copy_frag.frag b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/mat/mat2_copy_frag.frag
new file mode 100644
index 0000000000..de941ae60c
--- /dev/null
+++ b/dom/canvas/test/webgl-conf/checkout/conformance/ogles/GL/mat/mat2_copy_frag.frag
@@ -0,0 +1,56 @@
+
+/*
+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
+
+/* This epsilon will work as long as the magnitude of the float is < 128.
+ * This can be seen by taking the spec relative mediump precision of 2^-10:
+ * 0.125 / 2^-10 = 128
+ */
+#define ERROR_EPSILON (0.125)
+
+void main (void)
+{
+	float x;
+	// Declare a 2 by 2 matrix with unique elements.
+	mat2 a = mat2(1.0, 2.0,   // 1.0 4.0
+	              4.0, 8.0);  // 2.0 8.0
+
+	// Copy the matrix to another non-const matrix.
+	mat2 b = a;
+
+	// Check each element of the copy.
+	bool elms = true;
+	if(b[0][0] != 1.0) elms = false;
+	if(b[0][1] != 2.0) elms = false;
+	if(b[1][0] != 4.0) elms = false;
+	if(b[1][1] != 8.0) elms = false;
+
+	// Add up each row of the copy.
+	bool rows = true;
+	x = b[0][0] + b[1][0];
+	if(x < 5.0-ERROR_EPSILON || x > 5.0+ERROR_EPSILON) rows = false;
+	x = b[0][1] + b[1][1];
+	if(x < 10.0-ERROR_EPSILON || x > 10.0+ERROR_EPSILON) rows = false;
+
+	// Add up each column of the copy.
+	bool cols = true;
+	x = b[0][0] + b[0][1];
+	if(x < 3.0-ERROR_EPSILON || x > 3.0+ERROR_EPSILON) cols = false;
+	x = b[1][0] + b[1][1];
+	if(x < 12.0-ERROR_EPSILON || x > 12.0+ERROR_EPSILON) cols = false;
+
+	// Check if all of the operations were successful.
+	float gray = elms && rows && cols ? 1.0 : 0.0;
+
+	// Assign the fragment color.
+	gl_FragColor = vec4(gray, gray, gray, 1.0);
+}
+