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iigs-game-engine
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Remove unused memory and start working on priority renderer

This commit is contained in:
Lucas Scharenbroich 2022-06-09 07:41:58 -05:00
parent 364af7bc57
commit 955cf4a580
2 changed files with 46 additions and 8 deletions
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2
src/static/TileStoreDefs.s
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@ -17,7 +17,7 @@ TS_SCREEN_ADDR equ {TILE_STORE_SIZE*8} ; cached value of on-screen
; TODO: Move these arrays into the K bank to support direct dispatch via jmp (abs,x)
TS_BASE_TILE_COPY equ {TILE_STORE_SIZE*9} ; derived from TS_TILE_ID to optimize tile copy to support sprite rendering
TS_BASE_TILE_DISP equ {TILE_STORE_SIZE*10} ; derived from TS_TILE_ID to optimize base (non-sprite) tile dispatch in the Render function
; TS_BASE_TILE_DISP equ {TILE_STORE_SIZE*10} ; derived from TS_TILE_ID to optimize base (non-sprite) tile dispatch in the Render function
TS_DIRTY_TILE_DISP equ {TILE_STORE_SIZE*11} ; derived from TS_TILE_ID to optimize dirty tile dispatch in the Render function
TILE_STORE_NUM equ 12 ; Need this many parallel arrays

52
src/tiles/FastRenderer.s
View File

@ -13,13 +13,9 @@ NoSpriteFast
lda TileStore+TS_CODE_ADDR_HIGH,x ; load the bank of the target code field line
pha ; and put on the stack for later. Has TileStore bank in high byte.
ldy TileStore+TS_CODE_ADDR_LOW,x ; load the address of the code field
; lda TileStore+TS_BASE_TILE_DISP,x ; go to the tile copy routine (just basics)
; stal nsf_patch+1
lda TileStore+TS_TILE_ADDR,x ; load the address of this tile's data (pre-calculated)
plb ; set the code field bank
jmp (K_TS_BASE_TILE_DISP,x)
;nsf_patch jmp $0000
jmp (K_TS_BASE_TILE_DISP,x) ; go to the tile copy routine (just basics)
; The TS_BASE_TILE_DISP routines will come from this table when ENGINE_MODE_TWO_LAYER and
; ENGINE_MODE_DYN_TILES are both off.
@ -32,8 +28,51 @@ FastTileProcs dw _TBCopyDataFast,_TBCopyDataFast,_TBCopyDataFast,_TBCopyDataFa
; then the mask information must be copied as well....This is the last decision point.
SpriteDispatch
; jmp (K_TS_SPRITE_TILE_DISP,x)
txy
SpriteBitsToVBuffAddrs OneSpriteFast;TwoSpritesFast;ThreeSpritesFast;FourSpritesFast
SpriteBitsToVBuffAddrs OneSpriteFastUnder;TwoSpritesFast;ThreeSpritesFast;FourSpritesFast
; This handles sprite with the tile above
OneSpriteFastUnder
tax
jsr _CopySpriteDataToDP2 ; preserves Y
ldx TileStore+TS_TILE_ADDR,y
lda TileStore+TS_CODE_ADDR_HIGH,y ; load the bank of the target code field line
pha ; and put on the stack for later. Has TileStore bank in high byte.
lda TileStore+TS_CODE_ADDR_LOW,y ; load the address of the code field
tay
plb
]line equ 0
lup 8
lda tmp_tile_data+{]line*4}
andl tiledata+{]line*4}+32,x
oral tiledata+{]line*4},x
sta: $0004+{]line*$1000},y
lda tmp_tile_data+{]line*4}+2
andl tiledata+{]line*4}+32+2,x
oral tiledata+{]line*4}+2,x
sta: $0001+{]line*$1000},y
]line equ ]line+1
--^
plb
rts
_CopySpriteDataToDP2
]line equ 0
lup 8
ldal spritedata+{]line*SPRITE_PLANE_SPAN},x
sta tmp_tile_data+{]line*4}
ldal spritedata+{]line*SPRITE_PLANE_SPAN}+2,x
sta tmp_tile_data+{]line*4}+2
]line equ ]line+1
--^
rts
; Where there are sprites involved, the first step is to call a routine to copy the
; tile data into a temporary buffer. Then the sprite data is merged and placed into
@ -52,7 +91,6 @@ OneSpriteFast
tay
plb
_TBApplySpriteData2
]line equ 0
lup 8
lda tmp_tile_data+{]line*4}