Browse code

Rewrote rect routines

neauoire authored on 21/02/2021 21:23:36
Showing 2 changed files
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@@ -20,5 +20,5 @@ cc -std=c89 -DDEBUG -Wall -Wno-unknown-pragmas -Wpedantic -Wshadow -Wextra -Werr
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 # cc uxn.c emulator.c -std=c89 -Os -DNDEBUG -g0 -s -Wall -Wno-unknown-pragmas -L/usr/local/lib -lSDL2 -o bin/emulator
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 # run
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-./bin/assembler examples/shapes.usm bin/boot.rom
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+./bin/assembler examples/paint.usm bin/boot.rom
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 ./bin/emulator bin/boot.rom
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@@ -3,77 +3,73 @@
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 :dev/r fff8 ( std read port )
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 :dev/w fff9 ( std write port )
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-;x_ 2 ;y_ 2 ;x 2 ;y 2 ;w 2 ;h 2 ;color 1
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+;color 1 ;x1 2 ;x2 2 ;y1 2 ;y2 2
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 |0100 @RESET
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 	#01 =dev/w ( set dev/write to screen ) 
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-	#01 ,color STR
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-	( fill rect x y w h )
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-	#0020 #0020 #0060 #0040 ,fillrect JSR
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-
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-	#02 ,color STR
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-	( fill rect x y w h )
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-	#0030 #0030 #0040 #0060 ,fillrect JSR
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-
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-	#03 ,color STR
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-	( fill rect x y w h )
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-	#0040 #0040 #0060 #0040 ,fillrect JSR
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-
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-	#01 ,color STR
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-	( fill rect x y w h )
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-	#00a0 #0010 #0020 #0020 ,fillrect JSR
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-
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-	#02 ,color STR
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-	( fill rect x y w h )
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-	#00b0 #0040 #0020 #0020 ,linerect JSR
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-
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-	#03 ,color STR
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-	( fill rect x y w h )
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-	#0058 #0028 #0050 #0050 ,linerect JSR
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-
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-	#01 ,color STR
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-	( fill rect x y w h )
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-	#0028 #0038 #0050 #0030 ,linerect JSR
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-
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+	#01 =color
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+	#0020 #0020 #0060 #0060 ,fill-rect JSR
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+	#02 =color
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+	#0030 #0030 #0070 #0070 ,fill-rect JSR
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+	#03 =color
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+	#0040 #0040 #0080 #0080 ,fill-rect JSR
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+
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+	#01 =color
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+	#0090 #0020 #00d0 #0060 ,line-rect JSR
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+	#02 =color
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+	#00a0 #0030 #00e0 #0070 ,line-rect JSR
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+	#03 =color
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+	#00b0 #0040 #00f0 #0080 ,line-rect JSR
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+	
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 BRK
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-@fillrect
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-	=h  =w  =y  =x 
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-	~x  =x_  ~y  =y_ 
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-	@fillrectrow
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-		~x  =x_ 
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-		@fillrectcol
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-			( draw ) ~x_  ~y_  ,putpixel JSR
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-			~x_  #0001 ADD2 =x_  
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-			~x_  ~w  ~x  ADD2 LTH2 ,fillrectcol ROT JMP? POP2
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-		~y_  #0001 ADD2 =y_  
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-		~y_  ~h  ~y  ADD2 LTH2 ,fillrectrow ROT JMP? POP2
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-	RTS
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-
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-@linerect
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-	=h  =w  =y  =x 
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-	~x  =x_  ~y  =y_ 
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-	@linerectcol
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-		( draw ) ~x  ~y_  ,putpixel JSR
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-		( draw ) ~x  ~w  ADD2 ~y_  ,putpixel JSR
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-		~y_  #0001 ADD2 =y_  
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-		~y_  ~h  ~y  ADD2 LTH2 ,linerectcol ROT JMP? POP2
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-	@linerectrow
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-		( draw ) ~x_  ~y  ,putpixel JSR
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-		( draw ) ~x_  ~y  ~h  ADD2 ,putpixel JSR
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-		~x_  #0001 ADD2 =x_  
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-		~x_  ~w  ~x  ADD2 #0001 ADD2 LTH2 ,linerectrow ROT JMP? POP2
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-	RTS
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-
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-@putpixel 
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-	IOW2 ( y short )
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-	IOW2 ( x short )
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-	,color LDR IOW  ( color byte )
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-	RTS
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+@line-ver ( x1 y1 y2 )
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+	=y2 =y1 =x1 
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+	@line-ver-loop
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+		( draw ) ~x1 ~y1 IOW2 IOW2 ~color IOW
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+		( incr ) ~y1 #0001 ADD2 DUP2 =y1
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+		~y2 NEQ2 ,line-ver-loop ROT JMP? POP2
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+RTS
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+
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+@line-hor ( x1 y1 x2 )
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+	=x2 =y1 =x1
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+	@line-hor-loop
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+		( draw ) ~x1 ~y1 IOW2 IOW2 ~color IOW
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+		( incr ) ~x1 #0001 ADD2 DUP2 =x1
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+		~x2 NEQ2 ,line-hor-loop ROT JMP? POP2
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+RTS
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+
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+@line-rect ( x1 y1 x2 y2 )
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+	=y2 =x2 ( stash x1 y1 ) DUP2 WSR2 =y1 DUP2 WSR2 =x1
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+	@line-rect-hor
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+		( draw ) ~x1 ~y1 IOW2 IOW2 ~color IOW
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+		( draw ) ~x1 ~y2 IOW2 IOW2 ~color IOW
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+		( incr ) ~x1 #0001 ADD2 DUP2 =x1  
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+		~x2 #0001 ADD2 LTH2 ,line-rect-hor ROT JMP? POP2
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+	( restore x1 y1 ) RSW2 =x1 RSW2 =y1
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+	@line-rect-ver
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+		( incr ) ~y1 #0001 ADD2 DUP2 =y1  
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+		( draw ) ~x1 ~y1 IOW2 IOW2 ~color IOW
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+		( draw ) ~x2 ~y1 IOW2 IOW2 ~color IOW
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+		~y2 #0001 SUB2 LTH2 ,line-rect-ver ROT JMP? POP2
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+RTS
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+
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+@fill-rect ( x1 y1 x2 y2 )
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+	=y2 =x2 ( stash x1 y1 ) =y1 DUP2 WSR2 =x1
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+	@fill-rect-ver
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+		RSW2 DUP2 =x1 WSR2
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+		@fill-rect-hor
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+			( draw ) ~x1 ~y1 IOW2 IOW2 ~color IOW
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+			( incr ) ~x1 #0001 ADD2 DUP2 =x1  
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+			~x2 LTH2 ,fill-rect-hor ROT JMP? POP2
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+		~y1 #0001 ADD2 DUP2 =y1
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+		~y2 LTH2 ,fill-rect-ver ROT JMP? POP2
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+	RSW2 POP2
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+RTS
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 |c000 @FRAME BRK 
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 |d000 @ERROR BRK 
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-|FFF0 [ f2ac 35bb 2b53 ] ( palette )
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+|FFF0 [ f2ac 35bb 2b5f ] ( palette )
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 |FFFA .RESET .FRAME .ERROR ( vectors )
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