diff --git a/src/Sprite.s b/src/Sprite.s index b524484..9f4afaa 100644 --- a/src/Sprite.s +++ b/src/Sprite.s @@ -19,13 +19,14 @@ InitSprites cpx #$FFFE bne :loop2 -; Initialize the VBuff offset values for the different cases +; Initialize the VBuff offset values for the different cases. These are locations in +; the TileStoreLookup table, which has different dimensions than the underlying TileStore +; array -TILE_STORE_SPAN equ {TILE_STORE_WIDTH*2} -LAST_ROW equ {TILE_STORE_SPAN*{TILE_STORE_HEIGHT-1}} -NEXT_TO_LAST_ROW equ {TILE_STORE_SPAN*{TILE_STORE_HEIGHT-2}} -LAST_COL equ {TILE_STORE_WIDTH-1}*2 -NEXT_TO_LAST_COL equ {TILE_STORE_WIDTH-2}*2 +LAST_ROW equ {2*TS_LOOKUP_SPAN*{TILE_STORE_HEIGHT-1}} +NEXT_TO_LAST_ROW equ {2*TS_LOOKUP_SPAN*{TILE_STORE_HEIGHT-2}} +LAST_COL equ {{TILE_STORE_WIDTH-1}*2} +NEXT_TO_LAST_COL equ {{TILE_STORE_WIDTH-2}*2} lda #0 ; Normal row, Normal column ldx #0 @@ -98,7 +99,7 @@ NEXT_TO_LAST_COL equ {TILE_STORE_WIDTH-2}*2 jsr _CacheSpriteBanks rts -; Call with X-register set to TileStore tile and Acc set to the VBuff slot offset +; Call with X-register set to TileStore tile and A set to the VBuff slot offset _SetVBuffValues COL_BYTES equ 4 ; VBUFF_TILE_COL_BYTES ROW_BYTES equ 384 ; VBUFF_TILE_ROW_BYTES @@ -121,27 +122,27 @@ ROW_BYTES equ 384 ; VBUFF_TILE_ROW_BYTES lda #{2*COL_BYTES}+{0*ROW_BYTES} sta (tmp0),y - ldy TileStoreLookup+1*{TS_LOOKUP_SPAN*2},x + ldy TileStoreLookup+{1*{TS_LOOKUP_SPAN*2}},x lda #{0*COL_BYTES}+{1*ROW_BYTES} sta (tmp0),y - ldy TileStoreLookup+1*{TS_LOOKUP_SPAN*2}+2,x + ldy TileStoreLookup+{1*{TS_LOOKUP_SPAN*2}}+2,x lda #{1*COL_BYTES}+{1*ROW_BYTES} sta (tmp0),y - ldy TileStoreLookup+1*{TS_LOOKUP_SPAN*2}+4,x + ldy TileStoreLookup+{1*{TS_LOOKUP_SPAN*2}}+4,x lda #{2*COL_BYTES}+{1*ROW_BYTES} sta (tmp0),y - ldy TileStoreLookup+2*{TS_LOOKUP_SPAN*2},x + ldy TileStoreLookup+{2*{TS_LOOKUP_SPAN*2}},x lda #{0*COL_BYTES}+{2*ROW_BYTES} sta (tmp0),y - ldy TileStoreLookup+2*{TS_LOOKUP_SPAN*2}+2,x + ldy TileStoreLookup+{2*{TS_LOOKUP_SPAN*2}}+2,x lda #{1*COL_BYTES}+{2*ROW_BYTES} sta (tmp0),y - ldy TileStoreLookup+2*{TS_LOOKUP_SPAN*2}+4,x + ldy TileStoreLookup+{2*{TS_LOOKUP_SPAN*2}}+4,x lda #{2*COL_BYTES}+{2*ROW_BYTES} sta (tmp0),y rts diff --git a/src/Sprite2.s b/src/Sprite2.s index 11bf3c7..0500bad 100644 --- a/src/Sprite2.s +++ b/src/Sprite2.s @@ -113,10 +113,6 @@ _CalcDirtySprite pha and #$FFFC lsr ; Even numbers from [0, 160] (81 elements) -; cmp #TILE_STORE_WIDTH*2 -; bcc :x_in_range -; sbc #TILE_STORE_WIDTH*2 -;:x_in_range sta tmp3 adc RowTop sta _Sprites+TS_LOOKUP_INDEX,y ; This is the index into the TileStoreLookup table @@ -183,7 +179,7 @@ _CalcDirtySprite ; The X-register still has the TileStoreLookupYTable index, which we re-use to get a VBuff ; array selector for the vertical location - lda VBuffVertTableSelect,x ; A bunch of 12, 24 or 36 values + lda VBuffVertTableSelect,x ; A bunch of 0, 12 or 24 values clc ldx tmp3 adc VBuffHorzTableSelect,x ; A bunch of 0, 4 or 8 values diff --git a/src/static/TileStore.s b/src/static/TileStore.s index 56558ba..f88cb96 100644 --- a/src/static/TileStore.s +++ b/src/static/TileStore.s @@ -470,10 +470,22 @@ ScreenModeHeight ENT ; The eighth block is (X = N-1, Y = M-2) ; The ninth block is (X = N-2, Y = M-2) -VBuffVertTableSelect ENT - ds 51*2 +VBuffVertTableSelect ENT ; 51 entries + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,48,24 + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,48,24 VBuffHorzTableSelect ENT - ds 81*2 + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,0,0,0,0,0,16,8 + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,0,0,0,0,0,0 + dw 0,0,0,0,0,0,0,0,0,16,8 VBuffStart ds TILE_STORE_SIZE VBuffArray ENT diff --git a/src/static/TileStoreDefs.s b/src/static/TileStoreDefs.s index 904f2b7..a4ec69f 100644 --- a/src/static/TileStoreDefs.s +++ b/src/static/TileStoreDefs.s @@ -5,20 +5,20 @@ TILE_STORE_HEIGHT equ 26 MAX_TILES equ {26*41} ; Number of tiles in the code field (41 columns * 26 rows) TILE_STORE_SIZE equ {MAX_TILES*2} ; The tile store contains a tile descriptor in each slot -TS_TILE_ID equ TILE_STORE_SIZE*0 ; tile descriptor for this location -TS_DIRTY equ TILE_STORE_SIZE*1 ; Flag. Used to prevent a tile from being queued multiple times per frame -TS_SPRITE_FLAG equ TILE_STORE_SIZE*2 ; Bitfield of all sprites that intersect this tile. 0 if no sprites. -TS_TILE_ADDR equ TILE_STORE_SIZE*3 ; cached value, the address of the tiledata for this tile -TS_CODE_ADDR_LOW equ TILE_STORE_SIZE*4 ; const value, address of this tile in the code fields -TS_CODE_ADDR_HIGH equ TILE_STORE_SIZE*5 -TS_WORD_OFFSET equ TILE_STORE_SIZE*6 ; const value, word offset value for this tile if LDA (dp),y instructions re used -TS_BASE_ADDR equ TILE_STORE_SIZE*7 ; const value, because there are two rows of tiles per bank, this is set to $0000 ot $8000. -TS_SCREEN_ADDR equ TILE_STORE_SIZE*8 ; cached value of on-screen location of tile. Used for DirtyRender. +TS_TILE_ID equ {TILE_STORE_SIZE*0} ; tile descriptor for this location +TS_DIRTY equ {TILE_STORE_SIZE*1} ; Flag. Used to prevent a tile from being queued multiple times per frame +TS_SPRITE_FLAG equ {TILE_STORE_SIZE*2} ; Bitfield of all sprites that intersect this tile. 0 if no sprites. +TS_TILE_ADDR equ {TILE_STORE_SIZE*3} ; cached value, the address of the tiledata for this tile +TS_CODE_ADDR_LOW equ {TILE_STORE_SIZE*4} ; const value, address of this tile in the code fields +TS_CODE_ADDR_HIGH equ {TILE_STORE_SIZE*5} +TS_WORD_OFFSET equ {TILE_STORE_SIZE*6} ; const value, word offset value for this tile if LDA (dp),y instructions re used +TS_BASE_ADDR equ {TILE_STORE_SIZE*7} ; const value, because there are two rows of tiles per bank, this is set to $0000 ot $8000. +TS_SCREEN_ADDR equ {TILE_STORE_SIZE*8} ; cached value of on-screen location of tile. Used for DirtyRender. ; 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_DIRTY_TILE_DISP equ TILE_STORE_SIZE*11 ; derived from TS_TILE_ID to optimize dirty tile dispatch in the Render function +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_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 @@ -91,7 +91,7 @@ TS_LOOKUP_BORDER equ 2 TS_LOOKUP_SPAN equ {TS_LOOKUP_WIDTH+TS_LOOKUP_BORDER} TS_LOOKUP_ROWS equ {TS_LOOKUP_HEIGHT+TS_LOOKUP_BORDER} -; Blitter template constancts +; Blitter template constants PER_TILE_SIZE equ 3 SNIPPET_SIZE equ 32