Tim Felgentreff uploaded a new version of VMMaker to project VM Maker: http://source.squeak.org/VMMaker/VMMaker-tfel.359.mcz
==================== Summary ====================
Name: VMMaker-tfel.359 Author: tfel Time: 11 March 2015, 1:52:30.984 pm UUID: ddaf459e-9bc7-a445-99ae-1959ecd29f9b Ancestors: VMMaker-tfel.358
optimize BitBltSimulator to avoid reinitialization on each call to simulatedCopyBits. Makes it roughly 500x faster on RSqueakVM
=============== Diff against VMMaker-tfel.358 ===============
Item was changed: BitBltSimulation subclass: #BitBltSimulator instanceVariableNames: '' classVariableNames: '' poolDictionaries: '' category: 'VMMaker-InterpreterSimulation'! + BitBltSimulator class + instanceVariableNames: 'opTable maskTable warpBitShiftTable ditherMatrix4x4 ditherThresholds16 ditherValues16 dither8Lookup isInitialised'!
!BitBltSimulator commentStamp: 'tpr 5/5/2003 12:22' prior: 0! Provide bitblt support for the vm simulator! + BitBltSimulator class + instanceVariableNames: 'opTable maskTable warpBitShiftTable ditherMatrix4x4 ditherThresholds16 ditherValues16 dither8Lookup isInitialised'!
Item was added: + ----- Method: BitBltSimulator class>>dither8Lookup (in category 'accessing') ----- + dither8Lookup + + ^ dither8Lookup!
Item was added: + ----- Method: BitBltSimulator class>>ditherMatrix4x4 (in category 'accessing') ----- + ditherMatrix4x4 + + ^ ditherMatrix4x4!
Item was added: + ----- Method: BitBltSimulator class>>ditherThresholds16 (in category 'accessing') ----- + ditherThresholds16 + + ^ ditherThresholds16!
Item was added: + ----- Method: BitBltSimulator class>>ditherValues16 (in category 'accessing') ----- + ditherValues16 + + ^ ditherValues16!
Item was added: + ----- Method: BitBltSimulator class>>initialize (in category 'class initialization') ----- + initialize + "self initialize" + super initialize. + isInitialised := false. + !
Item was added: + ----- Method: BitBltSimulator class>>isInitialised (in category 'accessing') ----- + isInitialised + + ^ isInitialised!
Item was added: + ----- Method: BitBltSimulator class>>maskTable (in category 'accessing') ----- + maskTable + + ^ maskTable!
Item was added: + ----- Method: BitBltSimulator class>>setInitialised (in category 'accessing') ----- + setInitialised + + isInitialised := true.!
Item was added: + ----- Method: BitBltSimulator class>>warpBitShiftTable (in category 'accessing') ----- + warpBitShiftTable + + ^ warpBitShiftTable!
Item was changed: ----- Method: BitBltSimulator>>halftoneAt: (in category 'simulation') ----- halftoneAt: idx
+ ^ (halftoneBase + (idx \ halftoneHeight * 4)) long32At: 0! - ^ halftoneForm at: (idx \ halftoneHeight * 4) + 1!
Item was added: + ----- Method: BitBltSimulator>>initialiseModule (in category 'initialize-release') ----- + initialiseModule + + self class isInitialised ifFalse: [| ivars | + ivars := #(opTable maskTable warpBitShiftTable ditherMatrix4x4 ditherThresholds16 ditherValues16 dither8Lookup). + super initialiseModule. + ivars do: [:symbol | self class instVarNamed: symbol put: (self instVarNamed: symbol)]. + self class setInitialised]. + opTable := self class opTable. + maskTable := self class maskTable. + warpBitShiftTable := self class warpBitShiftTable. + ditherMatrix4x4 := self class ditherMatrix4x4. + ditherThresholds16 := self class ditherThresholds16. + ditherValues16 := self class ditherValues16. + dither8Lookup := self class dither8Lookup. + !
Item was changed: ----- Method: BitBltSimulator>>initializeDitherTables (in category 'simulation') ----- initializeDitherTables ditherMatrix4x4 := CArrayAccessor on: #( 0 8 2 10 12 4 14 6 3 11 1 9 15 7 13 5). ditherThresholds16 := CArrayAccessor on:#(0 2 4 6 8 10 12 14 16). ditherValues16 := CArrayAccessor on: #(0 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30). + dither8Lookup := CArrayAccessor on: (Array new: 4096).! - dither8Lookup := CArrayAccessor on: (Array new: 4096). - self initDither8Lookup.!
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