e5fa7edfd6
Relaxed block layout relaxed the restrictions on vector alignment, allowing them to be aligned on scalar boundaries. Scalar block layout relaxes this further, allowing *any* member to be aligned on a scalar boundary. The requirement that a vector not improperly straddle a 16-byte boundary is also relaxed. I've also added a test showing that `std430` layout works with UBOs. I'm troubled by the dual meaning of the `Packed` extended decoration. In some instances (struct, `float[]`, and `vec2[]` members), it actually means the exact opposite, that the member needs extra padding. This is especially problematic for `vec2[]`, because now we need to distinguish the two cases by checking the array stride. I wonder if this should actually be split into two decorations. |
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