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e1845c8d05
The extended PALETTE.DAT format can now carry a trailing byte, called 'lognumalphatables'. If it is present, the engine assumes that alpha blending tables are loaded at blend indices 1 to 1<<lognumalphatables and handles rotatesprite's alpha and spriteext[].alpha accordingly. The ability to save this new byte is added to engine.lua:savePaletteDat() and the corresponding convenience functions in shadexfog.lua. Examples test/screentext.con and test/sprite_access.con are updated for demonstration purposes. git-svn-id: https://svn.eduke32.com/eduke32@4426 1a8010ca-5511-0410-912e-c29ae57300e0
139 lines
3.1 KiB
Text
139 lines
3.1 KiB
Text
// Timing test for four 0..MAXSPRITES-1 access loops,
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// fwd->back->fwd->back.
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// Results with a LTO=1 RELEASE=1 C-CON build on x86: 42 ms for N=10.
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// (Compare with Lunatic results in test.elua)
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define N 10
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gamevar n 0 0
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gamevar i 0 0
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gamevar t 0 0
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gamevar t2 0 0
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define MAXSPRITES 16384
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define MAXSPRM1 16383 // MAXSPRITES-1
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onevent EVENT_ENTERLEVEL
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getticks t
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setvar n 0
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whilevarn n N
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{
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setvar i 0
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whilevarvarn i MAXSPRITES
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{
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setactor[i].blend 1
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addvar i 1
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}
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setvar i MAXSPRM1
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whilevarvarn i -1
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{
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setactor[i].shade 1
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subvar i 1
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}
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setvar i 0
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whilevarvarn i MAXSPRITES
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{
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setactor[i].xoffset 0
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addvar i 1
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}
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setvar i MAXSPRM1
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whilevarvarn i -1
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{
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setactor[i].yoffset 0
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subvar i 1
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}
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addvar n 1
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}
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getticks t2
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subvarvar t2 t
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// qsprintf test
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redefinequote 116 0..MAXSPITES-1
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redefinequote 117 in total
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redefinequote 114 %d x four %s iterations took %d ms %s
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qsprintf 115 /*<-*/ 114 /*args:*/ n 116 t2 117
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echo 115
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endevent
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////////// Periodically alpha-faded liztroop //////////
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gamevar alpha 0 0
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gamevar tmp 0 0
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onevent EVENT_GAME // XXX: better: on spawn + loadactor
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ifactor LIZTROOP
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{
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getactor[THISACTOR].mdflags tmp
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orvar tmp 16
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setactor[THISACTOR].mdflags tmp
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}
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endevent
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define NUMALPHATABS 128
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define C1 0 //must be log2(128/NUMALPHATABS)
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define C2 257 // must be 2*NUMALPHATABS+1
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define ALPHA_TABS_BY_EDUKE32 1 // assume alpha->blend handling by EDuke32
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onevent EVENT_ANIMATESPRITES
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setvarvar tmp totalclock
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shiftvarl tmp 2
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sin alpha tmp // alpha is now in [-2^14 .. 2^14]
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shiftvarr alpha 7 // [-2^7 .. 2^7]
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addvar alpha 128 // [0 .. 256]
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shiftvarr alpha C1 // [0 .. 2*NUMALPHATABS]
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ifvarn ALPHA_TABS_BY_EDUKE32 0
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{
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subvar alpha 1
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ifvarl alpha 0 setvar alpha 0
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setactor[THISACTOR].alpha alpha
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break
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}
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ifvare alpha 0
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{
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// clear translucent bits, 0xfdfe == 0xffff-(1+512)
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gettspr[THISACTOR].tsprcstat tmp
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andvar tmp 0xfdfe
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settspr[THISACTOR].tsprcstat tmp
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}
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else
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{
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gettspr[THISACTOR].tsprcstat tmp
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orvar tmp 2
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settspr[THISACTOR].tsprcstat tmp
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// Assume blending tables [1 .. NUMALPHATABS] are installed, like
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// generated by shadexfog.lua:create_alpha_trans(1, NUMALPHATABS).
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ifvarg alpha NUMALPHATABS
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{
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setvarvar tmp C2
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subvarvar tmp alpha
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setvarvar alpha tmp
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// Set "reverse translucent" cstat bit
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gettspr[THISACTOR].tsprcstat tmp
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orvar tmp 512
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settspr[THISACTOR].tsprcstat tmp
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}
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else
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{
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// Clear cstat bit 512
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gettspr[THISACTOR].tsprcstat tmp
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andvar tmp 0xfdff
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settspr[THISACTOR].tsprcstat tmp
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}
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settspr[THISACTOR].tsprblend alpha
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}
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endevent
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