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shave 60481 cycles from all precomputed 1-bit HGR transitions (~3% faster)
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4am
parent
0f86f9671b
commit
735d057736
@ -1,17 +1,6 @@
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;license:MIT
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;(c) 2019 by 4am
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;
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mirror_src1 = $E8 ; word
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mirror_dest1 = $EA ; word
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mirror_src2 = $EC ; word
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mirror_dest2 = $EE ; word
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src1 = $F0 ; word
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dest1 = $F2 ; word
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src2 = $F4 ; word
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dest2 = $F6 ; word
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reverse_input = $FC ; word
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input = $FE ; word
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copymasks = $0200 ; $100 bytes but sparse, index is 0..6 but in high 3 bits, so $00, $20, $40, $60, $80, $A0, $C0
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mirror_copymasks = $0201
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hgrlo = $0300 ; $C0 bytes
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@ -27,7 +16,7 @@ hgr1himirror = $BF40 ; $C0 bytes
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ldx #$27
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ldy #$00
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- tya
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sta .mirror_cols,x
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sta .mirror_cols, x
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iny
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dex
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bpl -
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@ -65,53 +54,53 @@ hgr1himirror = $BF40 ; $C0 bytes
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}
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!macro ROW_X_TO_BASE_ADDRESSES {
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lda hgrlo,x
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sta dest1
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sta src1
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lda hgr1hi,x
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sta dest1+1
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lda hgrlo, x
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sta <dest1
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sta <src1
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lda hgr1hi, x
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sta <dest1+1
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eor #$60
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sta src1+1
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lda hgrlo+1,x
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sta dest2
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sta src2
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lda hgr1hi+1,x
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sta dest2+1
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sta <src1+1
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lda hgrlo+1, x
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sta <dest2
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sta <src2
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lda hgr1hi+1, x
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sta <dest2+1
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eor #$60
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sta src2+1
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sta <src2+1
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}
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!macro ROW_X_TO_MIRROR_ADDRESSES {
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lda hgrlomirror,x
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sta mirror_dest1
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sta mirror_src1
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lda hgr1himirror,x
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sta mirror_dest1+1
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lda hgrlomirror, x
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sta <mirror_dest1
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sta <mirror_src1
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lda hgr1himirror, x
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sta <mirror_dest1+1
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eor #$60
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sta mirror_src1+1
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lda hgrlomirror+1,x
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sta mirror_dest2
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sta mirror_src2
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lda hgr1himirror+1,x
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sta mirror_dest2+1
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sta <mirror_src1+1
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lda hgrlomirror+1, x
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sta <mirror_dest2
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sta <mirror_src2
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lda hgr1himirror+1, x
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sta <mirror_dest2+1
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eor #$60
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sta mirror_src2+1
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sta <mirror_src2+1
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}
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!macro HIGH_3_LOW_5 .input {
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and #%11100000 ; second value: high 3 bits = index into tables to find bitmasks
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tax
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eor (.input),y ; second value: low 5 bits = byte offset within the row (implicitly "and #%00011111")
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eor (<.input), y ; second value: low 5 bits = byte offset within the row (implicitly "and #%00011111")
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tay
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}
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!macro INC_INPUT_AND_LOOP .loop {
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inc input
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inc <input
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beq +
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jmp .loop
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+ bit $c000
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bmi +
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inc input+1
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inc <input+1
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jmp .loop
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+ rts
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}
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@ -136,44 +125,77 @@ hgr1himirror = $BF40 ; $C0 bytes
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+BUILD_HGR_MIRROR_LOOKUP_TABLES hgrlomirror, hgr1himirror
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+BUILD_MIRROR_COLS mirror_cols
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+BUILD_SPARSE_BITMASKS copymasks, mirror_copymasks
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+LDADDR .coords
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+ST16 input
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jmp InputLoop
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ldx #(end-start) ; copy InputLoop code to zero page
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- lda start-1, x
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sta $FF, x
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dex
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bne -
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txa
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pha
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pha
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start
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!pseudopc 0 {
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Exit1Bit rts
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InputLoop
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ldy #0
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lda (input),y ; first value: HGR row (only 0..95 will be in input array)
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input=*+1
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lda .coords, y ; first value: HGR row (only 0..95 will be in input array)
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bmi Exit1Bit ; if > 127 then we're done
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tax
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+ROW_X_TO_BASE_ADDRESSES
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+ROW_X_TO_MIRROR_ADDRESSES
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inc input
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lda (input),y
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lda (input), y
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+HIGH_3_LOW_5 input
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; main 1x2 block in top-left quadrant
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+COPY_BIT src1, dest1, copymasks
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+COPY_BIT src2, dest2, copymasks
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src1=*+1
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lda $FDFD, y
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eor (<dest1), y
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and copymasks, x
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eor (<dest1), y
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dest1=*+1
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sta $FDFD, y
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src2=*+1
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lda $FDFD, y
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eor (<dest2), y
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and copymasks, x
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eor (<dest2), y
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dest2=*+1
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sta $FDFD, y
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; corresponding 1x2 block in top-right quadrant (same row, opposite column)
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lda mirror_cols,y
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lda mirror_cols, y
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tay
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+COPY_BIT src1, dest1, mirror_copymasks
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+COPY_BIT src2, dest2, mirror_copymasks
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; corresponding 1x2 block in bottom-right quadrant (opposite row, opposite column)
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+COPY_BIT mirror_src1, mirror_dest1, mirror_copymasks
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+COPY_BIT mirror_src2, mirror_dest2, mirror_copymasks
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mirror_src1=*+1
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lda $FDFD, y
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eor (<mirror_dest1), y
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and mirror_copymasks, x
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eor (<mirror_dest1), y
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mirror_dest1=*+1
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sta $FDFD, y
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mirror_src2=*+1
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lda $FDFD, y
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eor (<mirror_dest2), y
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and mirror_copymasks, x
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eor (<mirror_dest2), y
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mirror_dest2=*+1
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sta $FDFD, y
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; corresponding 1x2 block in bottom-left quadrant (opposite row, original column)
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lda mirror_cols,y
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lda mirror_cols, y
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tay
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+COPY_BIT mirror_src1, mirror_dest1, copymasks
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+COPY_BIT mirror_src2, mirror_dest2, copymasks
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+INC_INPUT_AND_LOOP InputLoop
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rts
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}
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end
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!if * and 1 {
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!byte 0 ;align 2 but avoids the fake allocation bug if it was aligned already
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}
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@ -5,6 +5,16 @@
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!to "build/FX/RADIAL",plain
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*=$6000
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mirror_src1 = $E8 ; word
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mirror_dest1 = $EA ; word
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mirror_src2 = $EC ; word
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mirror_dest2 = $EE ; word
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src1 = $F0 ; word
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dest1 = $F2 ; word
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src2 = $F4 ; word
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dest2 = $F6 ; word
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input = $FE ; word
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!source "src/fx/fx.hgr.precomputed.1bit.a"
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+BUILD_HGR_LOOKUP_TABLES hgrlo, hgr1hi
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@ -1,3 +1,14 @@
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mirror_src1 = $E8 ; word
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mirror_dest1 = $EA ; word
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mirror_src2 = $EC ; word
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mirror_dest2 = $EE ; word
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src1 = $F0 ; word
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dest1 = $F2 ; word
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src2 = $F4 ; word
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dest2 = $F6 ; word
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reverse_input = $FC ; word
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input = $FE ; word
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+BUILD_HGR_LOOKUP_TABLES hgrlo, hgr1hi
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+BUILD_HGR_MIRROR_LOOKUP_TABLES hgrlomirror, hgr1himirror
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+BUILD_MIRROR_COLS mirror_cols
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@ -5,6 +5,17 @@
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!to "build/FX/RADIAL3",plain
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*=$6000
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mirror_src1 = $E8 ; word
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mirror_dest1 = $EA ; word
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mirror_src2 = $EC ; word
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mirror_dest2 = $EE ; word
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src1 = $F0 ; word
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dest1 = $F2 ; word
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src2 = $F4 ; word
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dest2 = $F6 ; word
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reverse_input = $FC ; word
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input = $FE ; word
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!source "src/fx/fx.hgr.precomputed.1bit.a"
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+BUILD_HGR_LOOKUP_TABLES hgrlo, hgr1hi
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