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- removed the separate SSE2 version of the node builder's ClassifyLine function and all code associated with it.

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Like everything else related to doing standard math with SSE2 vs. x87, there's nothing to be gained here with anything but first generation SSE2 systems which are irrelevant these days.

Taking 'thespir2.wad' from https://forum.zdoom.org/viewtopic.php?f=1&t=10655 the SSE2 version is reproducably ~3% slower than the x87 version on my Core i7, which quite closely mirrors all my previous tests since 2007.
Overall this just looks like an optimization not worth doing.
This commit is contained in:
Christoph Oelckers 2017-02-26 12:47:16 +01:00
commit 90b8dbb096
5 changed files with 2 additions and 311 deletions
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2
src/nodebuild_classify_nosse2.cpp
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@ -3,7 +3,7 @@
#define FAR_ENOUGH 17179869184.f // 4<<32
extern "C" int ClassifyLine2 (node_t &node, const FSimpleVert *v1, const FSimpleVert *v2, int sidev[2])
int FNodeBuilder::ClassifyLine(node_t &node, const FPrivVert *v1, const FPrivVert *v2, int sidev[2])
{
double d_x1 = double(node.x);
double d_y1 = double(node.y);