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Do not render air only blocks. Nice performance speed up! :-)

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This commit is contained in:
Sascha L. Teichmann 2014-10-19 17:15:33 +02:00
parent 1c530a2ce7
commit 8b42446acc
2 changed files with 9 additions and 0 deletions
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4
common/block.go
View File

@ -47,6 +47,7 @@ type (
MapContent []byte MapContent []byte
AirId int32 AirId int32
IgnoreId int32 IgnoreId int32
AirOnly bool
IndexMap map[int32]int32 IndexMap map[int32]int32
} }
) )
@ -136,6 +137,7 @@ func NewDecodedBlock(data []byte, nameIndex map[string]int32) (db *DecodedBlock,
airId, ignoreId := int32(-1), int32(-1) airId, ignoreId := int32(-1), int32(-1)
indexMap := make(map[int32]int32) indexMap := make(map[int32]int32)
var airOnly bool
if version >= 22 { if version >= 22 {
offset++ offset++
numMappings := int(binary.BigEndian.Uint16(data[offset:])) numMappings := int(binary.BigEndian.Uint16(data[offset:]))
@ -160,6 +162,7 @@ func NewDecodedBlock(data []byte, nameIndex map[string]int32) (db *DecodedBlock,
} }
} }
} }
airOnly = airId != -1 && len(indexMap) == 0
} }
db = &DecodedBlock{ db = &DecodedBlock{
@ -167,6 +170,7 @@ func NewDecodedBlock(data []byte, nameIndex map[string]int32) (db *DecodedBlock,
MapContent: mapContent, MapContent: mapContent,
AirId: airId, AirId: airId,
IgnoreId: ignoreId, IgnoreId: ignoreId,
AirOnly: airOnly,
IndexMap: indexMap} IndexMap: indexMap}
return return

5
common/renderer.go
View File

@ -182,6 +182,11 @@ func (r *Renderer) RenderBlock(block *Block, nameIndex map[string]int32) (err er
return return
} }
if db.AirOnly {
r.Rejected++
return
}
w := r.width << 4 w := r.width << 4
ofs := int(bz)*w<<4 + int(bx)<<4 ofs := int(bz)*w<<4 + int(bx)<<4
yB := r.yBuffer yB := r.yBuffer