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diff --git a/tests/spec/glsl-1.20/execution/variable-indexing/fs-temp-mat2-wr.shader_test b/tests/spec/glsl-1.20/execution/variable-indexing/fs-temp-mat2-wr.shader_test
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+++ b/tests/spec/glsl-1.20/execution/variable-indexing/fs-temp-mat2-wr.shader_test
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+# Test generated by:
+# ../../../glsl-1.10/variable-index-write.sh 1.20
+
+[require]
+GLSL >= 1.10
+
+[vertex shader]
+#version 120
+void main() { gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex; }
+
+[fragment shader]
+#version 120
+uniform mat2x2 src_matrix;
+uniform vec2 v;
+uniform vec2 expect;
+uniform int col;
+uniform vec2 value;
+
+void main()
+{
+ mat2x2 dst_matrix;
+
+ /* Patch the supplied matrix with the supplied value. If the resulting
+ * matrix is correct, it will transform the input vector to the expected
+ * value. Verify that the distance between the result and the expected
+ * vector is less than epsilon.
+ */
+ dst_matrix = src_matrix;
+ dst_matrix[1] = value;
+ gl_FragColor = (distance(dst_matrix * v, expect) < 1e-6)
+ ? vec4(0.0, 1.0, 0.0, 1.0) : vec4(1.0, 0.0, 0.0, 1.0);
+}
+
+[test]
+clear color 0.5 0.5 0.5 0.5
+clear
+ortho
+
+uniform vec2 v 0.803161418975390 0.852987140792140
+uniform vec2 expect 0.708718134966688 1.452243795483797
+uniform mat2x2 src_matrix 0.241498998195656 0.861223395812970 666.0 777.0
+uniform vec2 value 0.603473877011433 0.891622340451180
+draw rect 20 5 10 10
+probe rgb 25 10 0.0 1.0 0.0
+