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silicon: fix CC mismatches (normalizeVec3InPlace TC, packParticleColor TC, addVec3ToAccumulator remove phantom scale param, revert classifyPointFrustum/testOBBFrustum to TC); runtime JMP address resolution

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MarcelineVQ
2026-03-17 13:33:51 -07:00
parent dc37042e6a
commit 10bd922cc3
3 changed files with 59 additions and 27 deletions
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src/silicon/silicon_sse.zig
+5 -4
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@@ -398,7 +398,7 @@ export fn si_mulMat3x4InPlace(mat_a: u32, mat_b: u32) callconv(TC) u32 {
// --- 0x6720F0: normalizeVec3InPlace ---
// sqrt + reciprocal. 14cy (2.2x). rsqrt+NR tested at 15cy — no gain, compiler's
// vsqrtss+vdivss pipeline is already optimal for scalar inverse sqrt.
export fn si_normalizeVec3InPlace(vec: u32) callconv(FC) void {
export fn si_normalizeVec3InPlace(vec: u32) callconv(TC) void {
const v: [*]f32 = @ptrFromInt(vec);
const len = @sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2]);
if (len > 1.0e-20) {
@@ -410,10 +410,11 @@ export fn si_normalizeVec3InPlace(vec: u32) callconv(FC) void {
}
// --- 0x71BC70: addVec3ToAccumulator (136K/7.5s) ---
export fn si_addVec3ToAccumulator(this: u32, vec: u32, scale_addr: u32) callconv(TC) void {
// thiscall(ECX=this, stack=vec). Scale is a global at 0x81207C, NOT a parameter.
export fn si_addVec3ToAccumulator(this: u32, vec: u32) callconv(TC) void {
const obj: [*]f32 = @ptrFromInt(this);
const v: [*]const f32 = @ptrFromInt(vec);
const scale: f32 = @as(*const f32, @ptrFromInt(scale_addr)).*;
const scale: f32 = @as(*const f32, @ptrFromInt(0x81207C)).*;
obj[21] += v[0];
obj[22] += v[1];
obj[23] += v[2];
@@ -443,7 +444,7 @@ export fn si_addToColorAccumulator() callconv(.naked) void {
// --- 0x7B7A80: packParticleColor (2K/7.5s) ---
// V4 multiply + clamp, then packed round+convert via @Vector(4, i32) for all channels at once.
export fn si_packParticleColor(obj: u32, r_bits: u32, g_bits: u32, b_bits: u32) callconv(FC) void {
export fn si_packParticleColor(obj: u32, r_bits: u32, g_bits: u32, b_bits: u32) callconv(TC) void {
const base: [*]u8 = @ptrFromInt(obj);
const out: *align(1) u32 = @ptrCast(base + 0x12C);
const alpha = base[0x12F];