mirror of
https://github.com/lscharen/iigs-game-engine.git
synced 2025-02-20 05:29:10 +00:00
Checkpoint; blitter failing
This commit is contained in:
Lucas Scharenbroich
parent
e378dc6e26
commit
3fce46872d
@ -58,6 +58,8 @@ appTmp0 equ 28
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; Load a tileset
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pea 0
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pea 256
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pea #^tiledata
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pea #tiledata
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_GTELoadTileSet
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@ -37,6 +37,8 @@ MaxBG0X equ 20
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MaxBG0Y equ 22
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OldOneSecondCounter equ 26
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appTmp0 equ 28
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appTmp1 equ 30
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appTmp2 equ 32
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phk
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plb
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@ -50,15 +52,39 @@ appTmp0 equ 28
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lda #ENGINE_MODE_USER_TOOL+ENGINE_MODE_TWO_LAYER
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jsr GTEStartUp ; Load and install the GTE User Tool
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; Initialize local variables
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pea $0000 ; Set the first two tiles
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pea $0002
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pea #^TileData
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pea #TileData
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_GTELoadTileSet
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; pea $0000
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; pea #^TileSetPalette
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; pea #TileSetPalette
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; _GTESetPalette
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pea $0000
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pea #^TileSetPalette
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pea #TileSetPalette
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_GTESetPalette
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; Set up our level data
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; Fill in the field with a checkboard pattern
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stz appTmp1
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:tloop0 stz appTmp0
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:tloop1 lda appTmp0 ; X
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pha
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pei appTmp1 ; Y
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eor appTmp1
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and #$0001
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pha ; tile ID
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_GTESetTile
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inc appTmp0
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lda #40
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cmp appTmp0
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bcs :tloop1
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inc appTmp1
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lda #25
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cmp appTmp1
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bcs :tloop0
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; Set up a very specific test. First, we draw a sprite into the sprite plane, and then
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; leave it alone. We are just testing the ability to merge sprite plane data into
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@ -70,7 +96,8 @@ EvtLoop
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jsr HandleKeys ; Do the generic key handlers
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pea RENDER_PER_SCANLINE ; Scanline rendering
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pea #RENDER_PER_SCANLINE ; Scanline rendering
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; pea $0000
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_GTERender
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brl EvtLoop
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@ -88,9 +115,12 @@ qtRec adrl $0000
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da $00
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; Color palette
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TileSetPalette dw $0000,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF,$0FFF
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MyDirectPage ds 2
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; Stub
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SetLimits rts
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PUT ../kfest-2022/StartUp.s
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PUT Tiles.s
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@ -5,7 +5,7 @@ REM
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REM Pass the path of the Cadius tool as the first argument (%1)
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set CADIUS="%1"
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set IMAGE="..\\..\\..\\emu\\Target.2mg"
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set IMAGE="..\\..\\emu\\Target.2mg"
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set FOLDER="/GTEDEV/TF4"
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REM Cadius does not overwrite files, so clear the root folder first
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@ -14,4 +14,4 @@ REM Cadius does not overwrite files, so clear the root folder first
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REM Now copy files and folders as needed
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%CADIUS% ADDFILE %IMAGE% %FOLDER% .\GTETF4
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%CADIUS% ADDFILE %IMAGE% %FOLDER% ..\src\Tool160
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%CADIUS% ADDFILE %IMAGE% %FOLDER% ..\..\src\Tool160
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@ -126,6 +126,9 @@ _GTEClearBG1Buffer MAC
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_GTESetBG1Scale MAC
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UserTool $2B00+GTEToolNum
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<<<
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_GTEGetAddress MAC
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UserTool $2C00+GTEToolNum
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<<<
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; EngineMode definitions
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; Script definition
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@ -155,6 +158,8 @@ RENDER_BG1_VERT_OFFSET equ $0004
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RENDER_BG1_ROTATION equ $0008
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RENDER_PER_SCANLINE equ $0010
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; GetAddress table IDs
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scanlineHorzOffset equ $0001
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; Tile constants
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; TILE_RESERVED_BIT equ $8000
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@ -233,6 +233,7 @@ EngineReset
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sta tmp15
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stz tmp14
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; Rebuild all of the bank blitters
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:loop
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ldx #BlitBuff
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lda #^BlitBuff
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@ -247,6 +248,15 @@ EngineReset
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dec tmp15
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bne :loop
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; Set the scanline tables to reasonable default values
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ldx #{416*2}-2
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lda #0
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:sxm_loop
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sta StartXMod164Arr,x
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dex
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dex
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bpl :sxm_loop
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rts
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@ -184,6 +184,9 @@ DIRTY_BIT_BG0_REFRESH equ $0010
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DIRTY_BIT_BG1_REFRESH equ $0020
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DIRTY_BIT_SPRITE_ARRAY equ $0040
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; GetAddress table IDs
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scanlineHorzOffset equ $0001 ; table of 416 wors, a double-array of scanline offset values. Must be 0, 163
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; Script definition
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YIELD equ $8000
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JUMP equ $4000
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53
src/Render.s
53
src/Render.s
@ -39,7 +39,6 @@ _Render
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beq *+5
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jmp _RenderScanlines ; Do the scanline-based renderer
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jsr _ApplyBG0YPos ; Set stack addresses for the virtual lines to the physical screen
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lda #RENDER_BG1_ROTATION
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@ -57,7 +56,7 @@ _Render
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jsr _RenderSprites ; Once the BG0 X and Y positions are committed, update sprite data
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jsr _UpdateBG0TileMap ; and the tile maps. These subroutines build up a list of tiles
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; jsr _UpdateBG1TileMap ; that need to be updated in the code field
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jsr _UpdateBG1TileMap ; that need to be updated in the code field
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jsr _ApplyTiles ; This function actually draws the new tiles into the code field
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@ -155,61 +154,63 @@ _DoOverlay
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:disp jsl $000000
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rts
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; Use the per-scanline tables to set the screen. This is really meant to be used without the built-in tilemap
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; support and is more of a low-level way to control the background rendering
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_RenderScanlines
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jsr _ApplyBG0YPos ; Set stack addresses for the virtual lines to the physical screen
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; jsr _ApplyBG1YPos ; Set the y-register values of the blitter
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jsr _ApplyBG1YPos ; Set the y-register values of the blitter
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; _ApplyBG0Xpos need to be split because we have to set the offsets, then draw in any updated tiles, and
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; finally patch out the code field. Right now, the BRA operand is getting overwritten by tile data.
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jsr _ApplyBG0XPosPre
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; jsr _ApplyBG1XPosPre
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jsr _ApplyBG1XPosPre
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; jsr _RenderSprites ; Once the BG0 X and Y positions are committed, update sprite data
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; jsr _ApplyTiles ; This function actually draws the new tiles into the code field
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jsr _ScanlineBG0XPos ; Patch the code field instructions with exit BRA opcode
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jsr _ScanlineBG0XPos ; Patch the code field instructions with exit BRA opcode
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; jsr _ApplyBG1XPos ; Update the direct page value based on the horizontal position
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; The code fields are locked in now and ready to be rendered. See if there is an overlay or any
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; other reason to render with shadowing off. Otherwise, just do things quickly.
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lda Overlays
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beq :no_ovrly
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; lda Overlays
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; beq :no_ovrly
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jsr _ShadowOff
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; jsr _ShadowOff
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; Shadowing is turned off. Render all of the scan lines that need a second pass. One
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; optimization that can be done here is that the lines can be rendered in any order
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; since it is not shown on-screen yet.
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ldx Overlays+2 ; Blit the full virtual buffer to the screen
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ldy Overlays+4
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jsr _BltRange
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; ldx Overlays+2 ; Blit the full virtual buffer to the screen
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; ldy Overlays+4
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; jsr _BltRange
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; Turn shadowing back on
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jsr _ShadowOn
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; jsr _ShadowOn
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; Now render all of the remaining lines in top-to-bottom (or bottom-to-top) order
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ldx #0
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ldy Overlays+2
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beq :skip
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jsr _BltRange
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; ldx #0
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; ldy Overlays+2
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; beq :skip
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; jsr _BltRange
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:skip
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jsr _DoOverlay
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; jsr _DoOverlay
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ldx Overlays+4
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cpx ScreenHeight
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beq :done
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ldy ScreenHeight
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jsr _BltRange
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bra :done
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; ldx Overlays+4
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; cpx ScreenHeight
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; beq :done
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; ldy ScreenHeight
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; jsr _BltRange
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; bra :done
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:no_ovrly
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ldx #0 ; Blit the full virtual buffer to the screen
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@ -217,9 +218,9 @@ _RenderScanlines
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jsr _BltRange
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:done
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ldx #0
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ldy ScreenHeight
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jsr _BltSCB
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; ldx #0
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; ldy ScreenHeight
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; jsr _BltSCB
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lda StartYMod208 ; Restore the fields back to their original state
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ldx ScreenHeight
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29
src/Tiles.s
29
src/Tiles.s
@ -1,20 +1,29 @@
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; Basic tile functions
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; Copy tileset data from a pointer in memory to the tiledata back
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; X = high word
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; A = low word
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;
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; tmp0 = Pointer to tile data
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; X = first tile
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; Y = last tile
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;
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; To copy in three tiles starting at tile 5, for example, X = 5 and Y = 9
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_LoadTileSet
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sta tmp0
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stx tmp1
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txa
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_Mul128 ; Jump to the target location
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tax
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tya
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_Mul128
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sta tmp2 ; This is the terminating byte
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ldy #0
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tyx
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:loop lda [tmp0],y
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stal tiledata,x
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dex
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dex
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dey
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dey
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bne :loop
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inx
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inx
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iny
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iny
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cpx tmp2
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bne :loop ; Use BNE so when Y=512 => $0000, we wait for wrap-around
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rts
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45
src/Tool.s
45
src/Tool.s
@ -96,6 +96,7 @@ _CallTable
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adrl _TSClearBG1Buffer-1
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adrl _TSSetBG1Scale-1
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adrl _TSGetAddress-1
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_CTEnd
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_GTEAddSprite MAC
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UserTool $1000+GTEToolNum
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@ -183,7 +184,9 @@ _TSShutDown
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jsr _CoreShutDown ; Shut down the library
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plb
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pea $8000
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lda EngineMode ; $0000 = system tool, $8000 = user tool set
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and #$8000
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pha
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pei ToolNum
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pea $0000 ; Set WAP to null
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pea $0000
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@ -303,18 +306,27 @@ _TSRenderDirty
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jsr _RenderDirty
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_TSExit #0;#2
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; LoadTileSet(Pointer)
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; LoadTileSet(Start, Finish, Pointer)
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_TSLoadTileSet
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TSPtr equ FirstParam
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:TSPtr equ FirstParam
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:finish equ FirstParam+4
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:start equ FirstParam+6
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_TSEntry
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lda TSPtr+2,s
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lda :TSPtr+2,s ; stuff the pointer in the direct page
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sta tmp1
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lda :TSPtr,s
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sta tmp0
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lda :start,s ; put the range in the registers
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tax
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lda TSPtr,s
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lda :finish,s
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tay
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jsr _LoadTileSet
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_TSExit #0;#4
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_TSExit #0;#8
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; CreateSpriteStamp(spriteDescriptor: Word, vbuffAddr: Word)
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_TSCreateSpriteStamp
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@ -805,6 +817,27 @@ _TSSetBG1Scale
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sta BG1Scaling
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_TSExit #0;#2
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_TSGetAddress
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:output equ FirstParam+0
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:tblId equ FirstParam+4
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_TSEntry
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lda #0
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sta :output,s
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sta :output+2,s
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lda :value,s
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cmp #scanlineHorzOffset
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bne :out
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lda #StartXMod164Arr
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sta :output,s
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lda #^StartXMod164Arr
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sta :output+2,s
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:out
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_TSExit #0;#2
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; Insert the GTE code
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put Math.s
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@ -57,7 +57,9 @@ _BltRange
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lda EngineMode
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bit #ENGINE_MODE_TWO_LAYER
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beq :skip_bank
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; TODO: Switch to loading the selected BG1 bank. No special "Alt" bank
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lda RenderFlags
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bit #RENDER_ALT_BG1
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beq :primary
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@ -81,7 +83,7 @@ _BltRange
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_R0W1
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tsc ; save the stack pointer
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stal stk_save+1
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blt_entry jml $000000 ; Jump into the blitter code $XX/YY00
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blt_return _R0W0
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@ -205,9 +205,8 @@ _ApplyBG0XPos
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; where the exit will be patched in
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dec ; (a - 1) % 164
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bpl :hop1
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bpl *+5
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lda #163
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:hop1
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; If the exit byte is odd, then the left edge is even-aligned and we round down and exit at at
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; that word.
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@ -243,7 +242,7 @@ _ApplyBG0XPos
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dec ; to get the index of the first on-screen byte
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cmp #164 ; Keep the value in range
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bcc :hop2
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bcc *+5
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sbc #164
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:hop2
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@ -19,7 +19,8 @@ _ScanlineBG0XPos
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:base_address equ tmp8
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:opcode equ tmp9
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:odd_entry_offset equ tmp10
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brk $AB
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lda StartYMod208 ; This is the base line of the virtual screen
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asl
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sta :virt_line_x2 ; Keep track of it
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@ -38,8 +39,8 @@ _ScanlineBG0XPos
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:loop
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ldx :virt_line_x2
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lda StartXMod164Arr,x ; Get the offset for this line
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lda StartXMod164Arr,x ; Get the offset for this line
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dec ; The exit point is one byte sooner
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bpl *+5
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lda #163
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@ -100,7 +101,7 @@ _ScanlineBG0XPos
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sta :opcode
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:prep_complete
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; Not patch in the code field line
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; Now patch in the code field line
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ldy BTableLow,x ; Get the address of the first code field line
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clc
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@ -124,9 +125,9 @@ _ScanlineBG0XPos
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sta: OPCODE_SAVE+$0000,y
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;SetConst
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txy ; ldy :exit_address -- starting at this address
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ldx :exit_bra ; Copy this value into all of the lines
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sta: $0000,y
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; txy ; ldy :exit_address -- starting at this address
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lda :exit_bra ; Copy this value into all of the lines
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sta: $0000,x
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; Next, patch in the CODE_ENTRY value, which is the low byte of a JMP instruction. This is an
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; 8-bit operation and, since the PEA code is bank aligned, we use the entry_offset value directly
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@ -135,7 +136,7 @@ _ScanlineBG0XPos
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; SetCodeEntry
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lda :entry_offset
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ldy :base_address
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; ldy :base_address
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sta: CODE_ENTRY+$0000,y
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; SetCodeEntryOpcode
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@ -151,11 +152,11 @@ _ScanlineBG0XPos
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; SetOddCodeEntry
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sta: ODD_ENTRY+$0000,y
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; SaveHighOperand
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ldx :exit_address
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; ldx :exit_address
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lda: $0002,x
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sta: OPCODE_HIGH_SAVE+$0000,y
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:not_odd
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rep #$21 ; clear the carry
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rep #$20 ; clear the carry
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; Do the end of the loop -- update the virtual line counter and reduce the number
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; of lines left to render
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@ -193,18 +194,19 @@ _RestoreScanlineBG0Opcodes
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:loop
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ldx :virt_line_x2
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ldy BTableLow,x ; Get the address of the first code field line
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lda BTableHigh,x
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ora :src_bank
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pha
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lda LastPatchOffsetArr,x
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lda BTableLow,x ; Get the address of the first code field line
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clc
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||||
adc LastPatchOffsetArr,x
|
||||
tax
|
||||
|
||||
plb
|
||||
lda OPCODE_SAVE+$0000,y
|
||||
sta $0000,x
|
||||
lda: OPCODE_SAVE+$0000,y
|
||||
sta: $0000,x
|
||||
|
||||
; Do the end of the loop -- update the virtual line counter and reduce the number
|
||||
; of lines left to render
|
||||
|
||||
@ -5,12 +5,12 @@
|
||||
DP_ADDR equ entry_1-base+1 ; offset to patch in the direct page for dynamic tiles
|
||||
BG1_ADDR equ entry_2-base+1 ; offset to patch in the Y-reg for BG1 (dp),y addressing
|
||||
STK_ADDR equ entry_3-base+1 ; offset to patch in the stack (SHR) right edge address
|
||||
BNK_ADDR equ entry_0-base+1 ; offset to patch in the address of a Bank 0 memory location to load the bank register
|
||||
; BNK_ADDR equ entry_0-base+1 ; offset to patch in the address of a Bank 0 memory location to load the bank register
|
||||
|
||||
DP_ENTRY equ entry_1-base
|
||||
TWO_LYR_ENTRY equ entry_2-base
|
||||
ONE_LYR_ENTRY equ entry_3-base
|
||||
BANK_ENTRY equ entry_0-base
|
||||
; BANK_ENTRY equ entry_0-base
|
||||
|
||||
CODE_ENTRY_OPCODE equ entry_jmp-base
|
||||
CODE_ENTRY equ entry_jmp-base+1 ; low byte of the page-aligned jump address
|
||||
@ -68,9 +68,9 @@ BankPatchNum equ *-BankPatches
|
||||
; the code is assembled on a page boundary to help with alignment
|
||||
ds \,$00 ; pad to the next page boundary
|
||||
base
|
||||
entry_0 lda #0000 ; Used to set per-scanline bank register
|
||||
tcs
|
||||
plb
|
||||
;entry_0 lda #0000 ; Used to set per-scanline bank register
|
||||
; tcs
|
||||
; plb
|
||||
entry_1 ldx #0000 ; Used for LDA 00,x addressing (Dynamic Tiles)
|
||||
entry_2 ldy #0000 ; Used for LDA (00),y addressing (Second Layer; BG1)
|
||||
entry_3 lda #0000 ; Sets screen address (right edge)
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user