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PACK D3DCOLOR.

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This commit is contained in:
Ben Vanik
2014-05-27 16:23:46 -07:00
parent edf282abdc
commit 192941eeb0
3 changed files with 33 additions and 9 deletions
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22
src/alloy/backend/x64/x64_sequences.cc
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@@ -4582,7 +4582,27 @@ EMITTER(PACK, MATCH(I<OPCODE_PACK, V128<>, V128<>>)) {
}
}
static void EmitD3DCOLOR(X64Emitter& e, const EmitArgType& i) {
XEASSERTALWAYS();
// RGBA (XYZW) -> ARGB (WXYZ)
// float r = roundf(((src1.x < 0) ? 0 : ((1 < src1.x) ? 1 : src1.x)) * 255);
// float g = roundf(((src1.y < 0) ? 0 : ((1 < src1.y) ? 1 : src1.y)) * 255);
// float b = roundf(((src1.z < 0) ? 0 : ((1 < src1.z) ? 1 : src1.z)) * 255);
// float a = roundf(((src1.w < 0) ? 0 : ((1 < src1.w) ? 1 : src1.w)) * 255);
// dest.iw = ((uint32_t)a << 24) |
// ((uint32_t)r << 16) |
// ((uint32_t)g << 8) |
// ((uint32_t)b);
// f2i(clamp(src, 0, 1) * 255)
e.vpxor(e.xmm0, e.xmm0);
if (i.src1.is_constant) {
e.LoadConstantXmm(e.xmm1, i.src1.constant());
e.vmaxps(e.xmm0, e.xmm1);
} else {
e.vmaxps(e.xmm0, i.src1);
}
e.vminps(e.xmm0, e.GetXmmConstPtr(XMMOne));
e.vmulps(e.xmm0, e.GetXmmConstPtr(XMM255));
e.vcvttps2dq(e.xmm0, e.xmm0);
e.vpshufb(i.dest, e.xmm0, e.GetXmmConstPtr(XMMPackD3DCOLOR));
}
static void EmitFLOAT16_2(X64Emitter& e, const EmitArgType& i) {
XEASSERTALWAYS();