mirror of
https://github.com/irmen/prog8.git
synced 2024-07-29 10:29:37 +00:00
83 lines
1.7 KiB
Lua
83 lines
1.7 KiB
Lua
%import textio
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; NOTE: meant to test to virtual machine output target (use -target vitual)
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main {
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sub start() {
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txt.clear_screen()
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txt.print("Welcome to a prog8 pixel shader :-)\n")
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uword ww = 0
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ubyte bc
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uword wc
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for bc in "irmen" {
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txt.chrout(bc)
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ww++
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}
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txt.print_uw(ww) ; 5
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txt.nl()
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for bc in [10,11,12] {
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txt.print_ub(bc)
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txt.spc()
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ww++
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}
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txt.print_uw(ww) ; 8
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txt.nl()
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txt.nl()
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for wc in [4097,8193,16385] {
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txt.print_uw(wc)
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txt.spc()
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ww++
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}
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txt.print_uw(ww) ; 11
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txt.nl()
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for bc in 10 to 20 step 3 {
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; 10,13,16,19
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txt.print_ub(bc)
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txt.spc()
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ww++
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}
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txt.print_uw(ww) ; 15
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txt.nl()
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for bc in 30 to 10 step -4 {
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; 30,26,22,18,14,10,6,2
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txt.print_ub(bc)
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txt.spc()
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ww++
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}
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txt.print_uw(ww) ; 23
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txt.nl()
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sys.exit(99)
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; the "pixelshader":
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; syscall1(8, 0) ; enable lo res creen
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; ubyte shifter
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;
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; shifter >>= 1
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;
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; repeat {
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; uword xx
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; uword yy = 0
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; repeat 240 {
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; xx = 0
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; repeat 320 {
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; syscall3(10, xx, yy, xx*yy + shifter) ; plot pixel
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; xx++
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; }
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; yy++
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; }
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; shifter+=4
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;
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; txt.print_ub(shifter)
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; txt.nl()
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; }
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}
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}
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