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silicon: naked asm for transpose/setAlpha/addColor/normalize, remove vec3Dot/distPlane/insideBounds from patches, direct patch transpose (7cy, 3.7x)

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MarcelineVQ
2026-03-17 03:52:50 -07:00
parent 3dfa559eac
commit dc37042e6a
3 changed files with 90 additions and 53 deletions
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src/bench/main.zig
+3 -3
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@@ -52,7 +52,7 @@ extern fn si_translateBoundingVol(u32, u32) callconv(cc_tc) void;
extern fn si_addVec3ToAccumulator(u32, u32, u32) callconv(cc_tc) void;
extern fn si_addToColorAccumulator(u32, u32) callconv(cc_tc) void;
extern fn si_packParticleColor(u32, u32, u32, u32) callconv(cc_fc) void;
extern fn si_setParticleAlpha(u32, u32) callconv(cc_fc) void;
extern fn si_setParticleAlpha(u32, u32, u32) callconv(cc_fc) void; // fastcall(ECX=obj, EDX=unused, stack=alpha)
extern fn si_ftol() callconv(.naked) void;
// =========================================================================
@@ -832,10 +832,10 @@ pub fn main() void {
const ab2: u32 = @bitCast(@as(f32, 0.75));
const of = origFn(fn (u32, u32, u32) callconv(cc_fc) void, 0x7B7B10);
of(a(&obj_o), 0, ab2);
si_setParticleAlpha(a(&obj_s), ab2);
si_setParticleAlpha(a(&obj_s), 0, ab2);
const ok = obj_o[0x12F] == obj_s[0x12F];
var t: u64 = std.math.maxInt(u64); for (0..5) |_| { const _t0 = rdtsc(); for (0..ITERS) |_| { of(a(&obj_o), 0, ab2); } const _te = rdtsc() - _t0; if (_te < t) t = _te; }
var s: u64 = std.math.maxInt(u64); for (0..5) |_| { const _t0 = rdtsc(); for (0..ITERS) |_| { si_setParticleAlpha(a(&obj_s), ab2); } const _te = rdtsc() - _t0; if (_te < s) s = _te; }
var s: u64 = std.math.maxInt(u64); for (0..5) |_| { const _t0 = rdtsc(); for (0..ITERS) |_| { si_setParticleAlpha(a(&obj_s), 0, ab2); } const _te = rdtsc() - _t0; if (_te < s) s = _te; }
report("setParticleAlpha", t, s, ok);
}