39 lines
1.1 KiB
Plaintext
39 lines
1.1 KiB
Plaintext
uniform half4 colorGreen, colorRed;
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const int plus = 1;
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const int minus = 2;
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const int star = 3;
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const int slash = 4;
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bool test(int op, float m11, float m12, float m21, float m22, float2x2 expected) {
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float one = colorRed.r;
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float2x2 m2 = float2x2(m11 * one, m12 * one, m21 * one, m22 * one);
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switch (op) {
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case plus: m2 += 1; break;
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case minus: m2 -= 1; break;
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case star: m2 *= 2; break;
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case slash: m2 /= 2; break;
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}
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return m2[0][0] == expected[0][0] &&
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m2[0][1] == expected[0][1] &&
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m2[1][0] == expected[1][0] &&
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m2[1][1] == expected[1][1];
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}
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half4 main(float2 coords) {
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float f1 = 1 * colorGreen.g;
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float f2 = 2 * colorGreen.g;
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float f3 = 3 * colorGreen.g;
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float f4 = 4 * colorGreen.g;
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return true
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&& test(plus, f1, f2, f3, f4, float2x2(f1+1, f2+1, f3+1, f4+1))
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&& test(minus, f1, f2, f3, f4, float2x2(f1-1, f2-1, f3-1, f4-1))
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&& test(star, f1, f2, f3, f4, float2x2(f1*2, f2*2, f3*2, f4*2))
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&& test(slash, f1, f2, f3, f4, float2x2(f1/2, f2/2, f3/2, f4/2))
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? colorGreen : colorRed;
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}
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