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bone_sse: incremental bone pointer advancement, V4 copyMat4

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MarcelineVQ
2026-03-16 11:18:50 -07:00
parent 3a522fd1e4
commit 91444f8104
1 changed files with 15 additions and 7 deletions
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src/transform44/bone_sse.zig
+15 -7
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@@ -344,11 +344,15 @@ inline fn rotateByQuaternion(mat: u32, qx: f32, qy: f32, qz: f32, qw: f32) void
matMul4x4(mat, tmp_addr, mat);
}
/// Copy 16 floats (4x4 matrix)
/// Copy 4x4 matrix (64 bytes) — 4 V4 loads/stores instead of 16 scalar copies.
inline fn copyMat4(dst: u32, src: u32) void {
comptime var i: u32 = 0;
inline while (i < 64) : (i += 4) {
wu32(dst + i, ru32(src + i));
inline for (0..4) |i| {
const off: u32 = @intCast(i * 16);
const row = V4{ rf32(src + off), rf32(src + off + 4), rf32(src + off + 8), rf32(src + off + 12) };
wf32(dst + off, row[0]);
wf32(dst + off + 4, row[1]);
wf32(dst + off + 8, row[2]);
wf32(dst + off + 12, row[3]);
}
}
@@ -1136,9 +1140,13 @@ export fn transformImpl_SSE(this: u32, mat1: u32, mat2: u32, mat3: u32, mat4: u3
if (bone_count != 0) {
var bone_idx: u32 = 0;
while (bone_idx < bone_count) : (bone_idx += 1) {
const bdef = bone_defs + bone_idx * 0x6C;
const brt = bone_rt_base + bone_idx * 0x118;
var bdef = bone_defs;
var brt = bone_rt_base;
while (bone_idx < bone_count) : ({
bone_idx += 1;
bdef += 0x6C;
brt += 0x118;
}) {
const flags = ru32(bdef + BD.flags);
const parent_idx_raw: i32 = @as(i32, @intCast(@as(i16, @bitCast(ru16(bdef + BD.parent_bone)))));