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vupkd3d d3dcolor (untested).

This commit is contained in:
Ben Vanik 2013-10-03 21:06:40 -07:00
parent 611902a97e
commit 0f5d0d992d
1 changed files with 42 additions and 0 deletions
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42
src/xenia/cpu/x64/x64_emit_altivec.cc
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@ -1674,6 +1674,48 @@ XEEMITTER(vupkd3d128, VX128_3(6, 2032), VX128_3)(X64Emitter& e, X86Compiler&
GpVar gt(c.newGpVar());
XmmVar vt(c.newXmmVar());
switch (type) {
case 0: // VPACK_D3DCOLOR
{
// http://hlssmod.net/he_code/public/pixelwriter.h
// ARGB (WXYZ) -> RGBA (XYZW)
c.int3(); // UNTESTED CONVERSION
// zzzzZZZZzzzzARGB
c.movaps(vt, e.vr_value(vb));
// zzzzZZZZzzzzARGB
// 000R000G000B000A
c.mov(gt, imm(
((1ull << 7) << 56) |
((1ull << 7) << 48) |
((1ull << 7) << 40) |
((0ull) << 32) | // B
((1ull << 7) << 24) |
((1ull << 7) << 16) |
((1ull << 7) << 8) |
((3ull) << 0)) // A
); // lo
c.movq(v, gt);
c.mov(gt, imm(
((1ull << 7) << 56) |
((1ull << 7) << 48) |
((1ull << 7) << 40) |
((2ull) << 32) | // R
((1ull << 7) << 24) |
((1ull << 7) << 16) |
((1ull << 7) << 8) |
((1ull) << 0)) // G
); // hi
c.pinsrq(v, gt, imm(1));
c.pshufb(vt, v);
// {256*R.0, 256*G.0, 256*B.0, 256*A.0}
c.cvtdq2ps(v, vt);
// {R.0, G.0, B.0 A.0}
// 1/256 = 0.00390625 = 0x3B800000
c.mov(gt, imm(0x3B800000));
c.movd(vt, gt.r32());
c.shufps(vt, vt, imm(0));
c.mulps(v, vt);
}
break;
case 1: // VPACK_NORMSHORT2
{
// (VD.x) = 3.0 + (VB.x)*2^-22