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math: test GPU size/alignment compatibility

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Signed-off-by: Stephen Gutekanst <stephen@hexops.com>
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Stephen Gutekanst 2023-08-16 21:43:26 -07:00
parent b9934fe141
commit 8c24e0a75f
1 changed files with 15 additions and 0 deletions
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15
src/math.zig
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@ -1154,3 +1154,18 @@ test "mat.mul" {
try expect(mat.equals(TSR, expected_TSR, tolerance));
}
}
test "gpu_compatibility" {
// https://www.w3.org/TR/WGSL/#alignment-and-size
try expectEqual(8, @sizeOf(Vec2));
try expectEqual(16, @sizeOf(Vec3)); // WGSL SizeOf 12
try expectEqual(16, @sizeOf(Vec4));
try expectEqual(64, @sizeOf(Mat3x3)); // TODO: bug: expected 48
try expectEqual(64, @sizeOf(Mat4x4));
try expectEqual(8, @alignOf(Vec2));
try expectEqual(16, @alignOf(Vec3));
try expectEqual(16, @alignOf(Vec4));
try expectEqual(64, @alignOf(Mat3x3)); // TODO: bug: expected 16
try expectEqual(64, @alignOf(Mat4x4)); // TODO: bug: expected 16
}