c332739531
If x is a known compile-time constant value, it can already be optimized to a final value. If x is not known, it could be zero, and 0/0 should result in a NaN. Change-Id: I643a7c6da0a43ec366235c4df39fc78d3b361de7 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/441580 Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: Brian Osman <brianosman@google.com> Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com>
83 lines
1.9 KiB
Plaintext
83 lines
1.9 KiB
Plaintext
uniform half4 colorRed, colorGreen;
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uniform float unknownInput;
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bool test() {
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half unknown = half(unknownInput);
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bool ok = true;
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half x = 32.0 + 2.0;
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ok = ok && (x == 34);
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x = 32.0 - 2.0;
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ok = ok && (x == 30);
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x = 32.0 * 2.0;
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ok = ok && (x == 64);
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x = 32.0 / 2.0;
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ok = ok && (x == 16);
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x = (12 > 2.0) ? (10 * 2 / 5 + 18 - 3) : 0;
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ok = ok && (x == 19);
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x = 0.0 == 0.0 ? 1 : -1;
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ok = ok && (x == 1);
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x = 0.0 == 1.0 ? 2 : -2;
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ok = ok && (x == -2);
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x = 0.0 != 1.0 ? 3 : -3;
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ok = ok && (x == 3);
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x = 0.0 != 0.0 ? 4 : -4;
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ok = ok && (x == -4);
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x = 6.0 > 5.0 ? 5 : -5;
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ok = ok && (x == 5);
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x = 6.0 > 6.0 ? 6 : -6;
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ok = ok && (x == -6);
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x = 6.0 >= 6.0 ? 7 : -7;
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ok = ok && (x == 7);
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x = 6.0 >= 7.0 ? 8 : -8;
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ok = ok && (x == -8);
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x = 5.0 < 6.0 ? 9 : -9;
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ok = ok && (x == 9);
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x = 6.0 < 6.0 ? 10 : -10;
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ok = ok && (x == -10);
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x = 6.0 <= 6.0 ? 11 : -11;
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ok = ok && (x == 11);
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x = 6.0 <= 5.0 ? 12 : -12;
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ok = ok && (x == -12);
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x = half(unknown + 0);
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ok = ok && (x == unknown);
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x = half(0 + unknown);
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ok = ok && (x == unknown);
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x = half(unknown - 0);
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ok = ok && (x == unknown);
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x = half(unknown * 0);
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ok = ok && (x == 0);
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x = half(unknown * 1);
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ok = ok && (x == unknown);
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x = half(1 * unknown);
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ok = ok && (x == unknown);
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x = half(0 * unknown);
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ok = ok && (x == 0);
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x = half(unknown / 1);
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ok = ok && (x == unknown);
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x = half(0 / unknown); // this should NOT optimize away
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ok = ok && (x == 0);
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x += 1;
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ok = ok && (x == 1);
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x += 0;
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ok = ok && (x == 1);
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x -= 2;
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ok = ok && (x == -1);
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x -= 0;
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ok = ok && (x == -1);
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x *= 1;
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ok = ok && (x == -1);
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x *= 2;
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ok = ok && (x == -2);
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x /= 1;
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ok = ok && (x == -2);
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x /= 2;
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ok = ok && (x == -1);
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return ok;
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}
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half4 main(float2 coords) {
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return test() ? colorGreen : colorRed;
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}
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