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1uniform half4 colorGreen, colorRed;
2
3bool test_float() {
4    bool ok = true;
5
6    float2x2 m1 = float2x2(float4(1, 2, 3, 4));
7    ok = ok && (m1 == float2x2(1, 2, 3, 4));
8
9    // This generates {5, 0, 0, 5} on some Radeon GPUs.
10//    float2x2 m2 = float2x2(float4(5));
11//    ok = ok && (m2 == float2x2(5, 5, 5, 5));
12
13    float2x2 m3 = float2x2(m1);
14    ok = ok && (m3 == float2x2(1, 2, 3, 4));
15
16    float2x2 m4 = float2x2(6);
17    ok = ok && (m4 == float2x2(6, 0, 0, 6));
18
19    m3 *= m4;
20    ok = ok && (m3 == float2x2(6, 12, 18, 24));
21
22    float2x2 m5 = float2x2(m1[1][1]);
23    ok = ok && (m5 == float2x2(4, 0, 0, 4));
24
25    m1 += m5;
26    ok = ok && (m1 == float2x2(5, 2, 3, 8));
27
28    float2x2 m7 = float2x2(5, float3(6, 7, 8));
29    ok = ok && (m7 == float2x2(5, 6, 7, 8));
30
31    float3x3 m9 = float3x3(9);
32    ok = ok && (m9 == float3x3(9, 0, 0, 0, 9, 0, 0, 0, 9));
33
34    float4x4 m10 = float4x4(11);
35    ok = ok && (m10 == float4x4(11, 0, 0, 0, 0, 11, 0, 0, 0, 0, 11, 0, 0, 0, 0, 11));
36
37    float4x4 m11 = float4x4(20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20);
38    m11 -= m10;
39    ok = ok && (m11 == float4x4(9, 20, 20, 20, 20, 9, 20, 20, 20, 20, 9, 20, 20, 20, 20, 9));
40
41    return ok;
42}
43
44bool test_half() {
45    bool ok = true;
46
47    half2x2 m1 = half2x2(half4(1, 2, 3, 4));
48    ok = ok && (m1 == half2x2(1, 2, 3, 4));
49
50    // This generates {5, 0, 0, 5} on some Radeon GPUs.
51//    half2x2 m2 = half2x2(half4(5));
52//    ok = ok && (m2 == half2x2(5, 5, 5, 5));
53
54    half2x2 m3 = half2x2(m1);
55    ok = ok && (m3 == half2x2(1, 2, 3, 4));
56
57    half2x2 m4 = half2x2(6);
58    ok = ok && (m4 == half2x2(6, 0, 0, 6));
59
60    m3 *= m4;
61    ok = ok && (m3 == half2x2(6, 12, 18, 24));
62
63    half2x2 m5 = half2x2(m1[1][1]);
64    ok = ok && (m5 == half2x2(4, 0, 0, 4));
65
66    m1 += m5;
67    ok = ok && (m1 == half2x2(5, 2, 3, 8));
68
69    half2x2 m7 = half2x2(5, half3(6, 7, 8));
70    ok = ok && (m7 == half2x2(5, 6, 7, 8));
71
72    half3x3 m9 = half3x3(9);
73    ok = ok && (m9 == half3x3(9, 0, 0, 0, 9, 0, 0, 0, 9));
74
75    half4x4 m10 = half4x4(11);
76    ok = ok && (m10 == half4x4(11, 0, 0, 0, 0, 11, 0, 0, 0, 0, 11, 0, 0, 0, 0, 11));
77
78    half4x4 m11 = half4x4(20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20);
79    m11 -= m10;
80    ok = ok && (m11 == half4x4(9, 20, 20, 20, 20, 9, 20, 20, 20, 20, 9, 20, 20, 20, 20, 9));
81
82    return ok;
83}
84
85bool test_comma() {
86    float2x2 x, y;
87    return (x = float2x2(1, 2, 3, 4),
88            y = 0.5 * float2x2(2, 4, 6, 8),
89            x == y);
90}
91
92half4 main(float2 coords) {
93    return test_float() && test_half() && test_comma() ? colorGreen : colorRed;
94}
95