2018-12-06 19:11:13 +00:00
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; Redefined versions of master.lib's grcg_setmode() and grcg_setcolor().
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GRCG_SETMODE_RMW_DEF macro instance
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; void grcg_setmode_rmw(void);
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public _grcg_setmode_rmw_&instance
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_grcg_setmode_rmw_&instance proc near
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GRCG_SETMODE_VIA_MOV al, GC_RMW
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ret
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_grcg_setmode_rmw_&instance endp
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nop
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endm
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GRCG_SETCOLOR_DIRECT_NOINT_DEF macro instance
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; Takes the GC_* color parameter in AH.
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; void grcg_setcolor_direct_noint(void);
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public _grcg_setcolor_direct_noint_&instance
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_grcg_setcolor_direct_noint_&instance proc near
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cli
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GRCG_SETCOLOR_DIRECT_CLOBBERING dx, ah
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sti
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ret
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_grcg_setcolor_direct_noint_&instance endp
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endm
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2018-12-21 22:03:25 +00:00
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; Convenience macro to prepare ES:DI.
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GRCG_FILL_PLAYFIELD_ROWS macro y:req, num_rows:req, scratch_sgm:=<ax>
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mov scratch_sgm, GRAM_400 + (((y + PLAYFIELD_Y) * ROW_SIZE) shr 4)
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mov es, scratch_sgm
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mov di, ((num_rows - 1) * ROW_SIZE) + PLAYFIELD_VRAM_X
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call _grcg_fill_playfield_rows
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endm
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