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Diffstat (limited to 'src/rops.h.old')
| -rw-r--r-- | src/rops.h.old | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/src/rops.h.old b/src/rops.h.old new file mode 100644 index 0000000..899b007 --- /dev/null +++ b/src/rops.h.old @@ -0,0 +1,118 @@ +/* + 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" + |