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#ifndef __ROPS_H__
#define __ROPS_H__
#include "stdbool.h"
/*
Raster Operations macros
*/
// -------------
// RGB_565
// a.red = a.red - b.red
// a.blue = a.blue - b.blue
// a.green = a.green - b.green
/*
#define ROP_SUB(a, b) \
" bics " #b ", " #b ", #0b00000100000100000 \n"\
" orr " #a ", " #a ", #0b00000100000100000 \n"\
" orr " #a ", " #a ", #0b10000000000000000 \n"\
" sub " #a ", " #a ", " #b " \n"\
" tst " #a ", #0b00000000000100000 \n"\
" biceq " #a ", " #a ", #0b00000000000011111 \n"\
" tst " #a ", #0b00000100000000000 \n"\
" biceq " #a ", " #a ", #0b00000011111100000 \n"\
" tst " #a ", #0b10000000000000000 \n"\
" biceq " #a ", " #a ", #0b01111100000000000 \n"
*/
#define ROP_SUB(a, b) \
" bics " #b ", " #b ", #0b00000100000100000 \n"\
" beq 999f \n"\
" orr " #a ", " #a ", #0b00000100000100000 \n"\
" orr " #a ", " #a ", #(1 << 31) \n"\
" subs " #a ", " #a ", " #b " \n"\
" bicpl " #a ", " #a ", #0b01111100000000000 \n"\
" tst " #a ", #0b00000000000100000 \n"\
" biceq " #a ", " #a ", #0b00000000000011111 \n"\
" tst " #a ", #0b00000100000000000 \n"\
" biceq " #a ", " #a ", #0b00000011111100000 \n"\
"999:\n"
// -------------
// RGB_565
// if ZF set do ROP_SUB, else:
// a.red = (a.red - b.red) / 2
// a.blue = (a.blue - b.blue) / 2
// a.green = (a.green - b.green) / 2
/*
#define ROP_SUB1_2(a, b) \
" movne " #a ", " #a ", lsr #1 \n"\
" bicne " #a ", " #a ", #0b00000010000010000 \n"\
" movne " #b ", " #b ", lsr #1 \n"\
" bicne " #b ", " #b ", #0b00000010000010000 \n"\
\
" bic " #b ", " #b ", #0b00000100000100000 \n"\
" orr " #a ", " #a ", #0b00000100000100000 \n"\
" orr " #a ", " #a ", #0b10000000000000000 \n"\
" sub " #a ", " #a ", " #b " \n"\
" tst " #a ", #0b00000000000100000 \n"\
" biceq " #a ", " #a ", #0b00000000000011111 \n"\
" tst " #a ", #0b00000100000000000 \n"\
" biceq " #a ", " #a ", #0b00000011111100000 \n"\
" tst " #a ", #0b10000000000000000 \n"\
" biceq " #a ", " #a ", #0b01111100000000000 \n"
*/
#define ROP_SUB1_2(a, b) \
" movne " #a ", " #a ", lsr #1 \n"\
" bicne " #a ", " #a ", #0b00000010000010000 \n"\
" movne " #b ", " #b ", lsr #1 \n"\
" bicne " #b ", " #b ", #0b00000010000010000 \n"\
\
" bics " #b ", " #b ", #0b00000100000100000 \n"\
" beq 999f \n"\
" orr " #a ", " #a ", #0b00000100000100000 \n"\
" orr " #a ", " #a ", #(1 << 31) \n"\
" subs " #a ", " #a ", " #b " \n"\
" bicpl " #a ", " #a ", #0b01111100000000000 \n"\
" tst " #a ", #0b00000000000100000 \n"\
" biceq " #a ", " #a ", #0b00000000000011111 \n"\
" tst " #a ", #0b00000100000000000 \n"\
" biceq " #a ", " #a ", #0b00000011111100000 \n"\
"999:\n"
// -------------
// RGB_565
// a.red = a.red + b.red
// a.blue = a.blue + b.blue
// a.green = a.green + b.green
#define ROP_ADD(a, b) \
" bics " #b ", " #b ", #0b00000100000100000 \n"\
" beq 999f \n"\
" bic " #a ", " #a ", #0b00000100000100000 \n"\
" add " #a ", " #a ", " #b " \n"\
" tst " #a ", #0b00000000000100000 \n"\
" orrne " #a ", " #a ", #0b00000000000011111 \n"\
" tst " #a ", #0b00000100000000000 \n"\
" orrne " #a ", " #a ", #0b00000011111100000 \n"\
" tst " #a ", #0b10000000000000000 \n"\
" orrne " #a ", " #a ", #0b01111100000000000 \n"\
"999:\n"
// -------------
// RGB_565
// if ZF set do ROP_ADD, else:
// a.red = (a.red + b.red) / 2
// a.blue = (a.blue + b.blue) / 2
// a.green = (a.green + b.green) / 2
#define ROP_ADD1_2(a, b) \
" bic " #a ", " #a ", #0b00000100000100000 \n"\
" bicne " #a ", " #a ", #0b00001000001000000 \n"\
" bic " #b ", " #b ", #0b00000100000100000 \n"\
" bicne " #b ", " #b ", #0b00001000001000000 \n"\
" add " #a ", " #a ", " #b " \n"\
" movne " #a ", " #a ", lsr #1 \n"\
" tst " #a ", #0b00000000000100000 \n"\
" orrne " #a ", " #a ", #0b00000000000011111 \n"\
" tst " #a ", #0b00000100000000000 \n"\
" orrne " #a ", " #a ", #0b00000011111100000 \n"\
" tst " #a ", #0b10000000000000000 \n"\
" orrne " #a ", " #a ", #0b01111100000000000 \n"
typedef struct {
unsigned char line;
unsigned char rop;
unsigned int value;
} ROPSTRUCT;
#define MAX_ROPS 0x10000
extern ROPSTRUCT rops[MAX_ROPS];
extern unsigned int ROpCount;
#define ROP_NOP 0
#define ROP_FIXEDCOLOUR 1
#define ROP_PALETTE 2
#define ROP_SCREEN_MODE 3
#define ROP_BRIGHTNESS 4
#define ROP_FORCE_BLANKING 5
#define ROP_TILE_ADDRESS 6
#define ROP_MOSAIC 7
#define ROP_BG_SCSIZE_SCBASE 8
#define ROP_BG_NAMEBASE 9
#define ROP_MODE7_ROTATION 10
#define ROP_BG_WINDOW_ENABLE 11
#define ROP_WINDOW1_LEFT 12
#define ROP_WINDOW1_RIGHT 13
#define ROP_WINDOW2_LEFT 14
#define ROP_WINDOW2_RIGHT 15
#define ROP_BG_WINDOW_LOGIC 16
#define ROP_OBJS_WINDOW_LOGIC 17
#define ROP_MAIN_SCREEN_DESIG 18
#define ROP_SUB_SCREEN_DESIG 19
#define ROP_MAIN_SCREEN_WMASK 20
#define ROP_SUB_SCREEN_WMASK 21
#define ROP_FIXEDCOL_OR_SCREEN 22
#define ROP_ADD_OR_SUB_COLOR 23
#define ADD_ROP(drop, dval) {rops[ROpCount].line = IPPU.CurrentLine; rops[ROpCount].rop = drop; rops[ROpCount].value = dval; ROpCount++;}
#define RESET_ROPS(from) \
{ \
for (unsigned int c = from; c < ROpCount; c++) doRaster(&rops[c]);\
ROpCount = 0;\
}
void doRaster(ROPSTRUCT *rop);
bool wouldRasterAlterStatus(ROPSTRUCT *rop);
#endif
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