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Optimize MapNode::serializeBulk 

before
  serializeBulk [us] __________________________ 9047x   9.363

after
  serializeBulk [us] __________________________ 8458x   1.214
This commit is contained in:
sfan5 2024-04-10 23:28:03 +02:00
parent 55c233f61b
commit 06c1a00d39
2 changed files with 11 additions and 9 deletions
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18
src/mapnode.cpp
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@ -708,15 +708,17 @@ Buffer<u8> MapNode::serializeBulk(int version,
Buffer<u8> databuf(nodecount * (content_width + params_width));
u32 start1 = content_width * nodecount;
u32 start2 = (content_width + 1) * nodecount;
// Writing to the buffer linearly is faster
u8 *p = &databuf[0];
for (u32 i = 0; i < nodecount; i++, p += 2)
writeU16(p, nodes[i].param0);
for (u32 i = 0; i < nodecount; i++, p++)
writeU8(p, nodes[i].param1);
for (u32 i = 0; i < nodecount; i++, p++)
writeU8(p, nodes[i].param2);
// Serialize content
for (u32 i = 0; i < nodecount; i++) {
writeU16(&databuf[i * 2], nodes[i].param0);
writeU8(&databuf[start1 + i], nodes[i].param1);
writeU8(&databuf[start2 + i], nodes[i].param2);
}
return databuf;
}

2
src/util/serialize.h
View File

@ -291,7 +291,7 @@ inline v3f readV3F32(const u8 *data)
inline void writeU8(u8 *data, u8 i)
{
data[0] = (i >> 0) & 0xFF;
data[0] = i;
}
inline void writeS8(u8 *data, s8 i)