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Add SOA Struct Layout (experimental) to demo.odin

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gingerBill
2019-11-03 12:52:13 +00:00
parent 013b3b9fb3
commit 57853fe1b1
2 changed files with 72 additions and 0 deletions
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examples/demo/demo.odin
+71
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@@ -1279,6 +1279,76 @@ range_statements_with_multiple_return_values :: proc() {
}
}
soa_struct_layout :: proc() {
// IMPORTANT NOTE(bill, 2019-11-03): This feature is subject to be changed/removed
fmt.println("\n#SOA Struct Layout");
{
Vector3 :: struct {x, y, z: f32};
N :: 2;
v_aos: [N]Vector3;
v_aos[0].x = 1;
v_aos[0].y = 4;
v_aos[0].z = 9;
fmt.println(len(v_aos));
fmt.println(v_aos[0]);
fmt.println(v_aos[0].x);
fmt.println(&v_aos[0].x);
v_aos[1] = {0, 3, 4};
v_aos[1].x = 2;
fmt.println(v_aos[1]);
fmt.println(v_aos);
v_soa: intrinsics.soa_struct(N, Vector3);
v_soa[0].x = 1;
v_soa[0].y = 4;
v_soa[0].z = 9;
// Same syntax as AOS and treat as if it was an array
fmt.println(len(v_soa));
fmt.println(v_soa[0]);
fmt.println(v_soa[0].x);
v_soa[1] = {0, 3, 4};
v_soa[1].x = 2;
fmt.println(v_soa[1]);
// Can use SOA syntax if necessary
v_soa.x[0] = 1;
v_soa.y[0] = 4;
v_soa.z[0] = 9;
fmt.println(v_soa.x[0]);
// Same pointer addresses with both syntaxes
assert(&v_soa[0].x == &v_soa.x[0]);
// Same fmt printing
fmt.println(v_aos);
fmt.println(v_soa);
}
{
// Works with arrays of length <= 4 which have the implicit fields xyzw/rgba
Vector3 :: distinct [3]f32;
N :: 2;
v_aos: [N]Vector3;
v_aos[0].x = 1;
v_aos[0].y = 4;
v_aos[0].z = 9;
v_soa: intrinsics.soa_struct(N, Vector3);
v_soa[0].x = 1;
v_soa[0].y = 4;
v_soa[0].z = 9;
}
}
main :: proc() {
when true {
extra_general_stuff();
@@ -1303,6 +1373,7 @@ main :: proc() {
where_clauses();
ranged_fields_for_array_compound_literals();
range_statements_with_multiple_return_values();
soa_struct_layout();
}
}