Azrael Posted May 30, 2006 Report Share Posted May 30, 2006 Comme je ne suis pas aussi balaise que Seb, et que j'ai autre chose à faire également je vous propose simplement une routine 68000 d'appel de tracé de ligne au blitter. Pour les explication je vous renvois à votre cours de 4ième. Pour les explication concernant l'appel au blitter, demandez à GT, moi je n'ai rempli que les registres Merci à Seb pour le débuggage de la division. N'hésitez pas quand même à poser une question !!! [ENGLISH] As I am not as clever as Seb (known as rotation man on the dancefloors), I am just able to give you a way to order the blitter to draw a line. Remember your secondary school math lessons and ask GT for any related blitter code, I just filled the blitter register... I don't even know how to change color... shame Thanks to Seb for the div debugging. Anyway, feel free to ask any question ; COORDONNEES DU SEGMENT; ; SEGMENT COORDINATES; X1: dc.w 50 Y1: dc.w 100 X2: dc.w 150 Y2: dc.w 150 DeltaX: dc.w 0 DeltaY: dc.w 0 AbsDeltaX: dc.w 0 AbsDeltaY: dc.w 0 SigneDeltaX: dc.w 0 SigneDeltaY: dc.w 0 Prec_w: dc.w $FFFF Prec_l: dc.l $FFFF Prec_l_swapped: dc.l $FFFF0000 Line: movem.l d0-d7/a0-a6,-(a7) move.l #0,A1_FSTEP move.l #0,A1_STEP move.l #0,A1_FPIXEL move.w Y1,d0 swap d0 move.w X1,d0 move.l d0,A1_PIXEL moveq #0,d0 move.w X2,d0 sub.w X1,d0 move.w #1,SigneDeltaX move.w d0,DeltaX bpl.s Positif_deltax neg.w d0 move.w #-1,SigneDeltaX Positif_deltax: move.w d0,AbsDeltaX moveq #0,d0 move.w Y2,d0 sub.w Y1,d0 move.w #1,SigneDeltaY move.w d0,DeltaY bpl.s Positif_deltay neg.w d0 move.w #-1,SigneDeltaY Positif_deltay: move.w d0,AbsDeltaY tst.w DeltaX bne.s DeltaX_Pas_egal_a_zero_01 tst.w DeltaY bne.s DeltaY_Pas_egal_a_zero_01 moveq #1,d0 swap d0 move.w #1,d0 move.l d0,B_COUNT move.l #0,A1_FINC jmp Go_blit DeltaY_Pas_egal_a_zero_01: moveq #1,d0 swap d0 move.w AbsDeltaY,d0 add.w #1,d0 move.l d0,B_COUNT move.l #0,A1_FINC moveq #0,d0 move.w SigneDeltaY,d0 swap d0 move.l d0,A1_INC jmp Go_blit DeltaX_Pas_egal_a_zero_01: tst.w DeltaY bne.s DeltaY_Pas_egal_a_zero_02 moveq #1,d0 swap d0 move.w AbsDeltaX,d0 add.w #1,d0 move.l d0,B_COUNT move.l #0,A1_FINC moveq #0,d0 move.w SigneDeltaX,d0 move.l d0,A1_INC jmp Go_blit DeltaY_Pas_egal_a_zero_02: move.w AbsDeltaY,d0 sub.w AbsDeltaX,d0 bne AbsDeltaY_different_de_AbsDeltaX moveq #1,d0 swap d0 move.w AbsDeltaX,d0 add.w #1,d0 move.l d0,B_COUNT move.l #0,A1_FINC move.w SigneDeltaY,d0 swap d0 move.w SigneDeltaX,d0 move.l d0,A1_INC jmp Go_blit AbsDeltaY_different_de_AbsDeltaX: tst.w d0 bpl AbsDeltaY_inferieur_a_absdeltax moveq #1,d0 swap d0 move.w AbsDeltaX,d0 add.w #1,d0 move.l d0,B_COUNT move.w AbsDeltaY,d1 swap d1 move.w Prec_l,d1 divu AbsDeltaX,d1 and.l #$FFFF,d1 tst.w DeltaY bpl.s DeltaY_positif_03 neg.l d1 move.l Prec_l_swapped,A1_FPIXEL DeltaY_positif_03: moveq #0,d0 move.w d1,d0 swap d0 move.l d0,A1_FINC move.w SigneDeltaX,d1 move.l d1,A1_INC jmp Go_blit AbsDeltaY_inferieur_a_absdeltax: moveq #1,d0 swap d0 move.w AbsDeltaY,d0 add.w #1,d0 move.l d0,B_COUNT move.w AbsDeltaX,d1 swap.w d1 move.w Prec_l,d1 divu AbsDeltaY,d1 and.l #$FFFF,d1 tst.w DeltaX bpl.s DeltaX_positif_04 neg.l d1 move.l Prec_l,A1_FPIXEL DeltaX_positif_04: moveq #0,d0 move.w d1,d0 move.l d0,A1_FINC move.w SigneDeltaY,d1 swap d1 move.l d1,A1_INC Go_blit: lea B_SRCD,a0 move.l #-1,(a0)+ move.l #-1,(a0)+ move.l Adr_5,A1_BASE move.l #PITCH1|PIXEL16|WID320|XADDINC,A1_FLAGS move.l #UPDA1|UPDA1F|LFU_REPLACE,B_CMD lea B_CMD,a0 Wait_blitter_end_1: move.l (a0),d0 btst #0,d0 beq.s Wait_blitter_end_1 Exit_line: movem.l (a7)+,d0-d7/a0-a6 rts EDIT : I have corrected the code... little fix : added 1 to AdsDeltaX and AdsDeltaY EDIT 2 : hem... hope it works better than previously. Quote Link to comment Share on other sites More sharing options...
Zerosquare Posted May 30, 2006 Report Share Posted May 30, 2006 ; ICI ON N'AFFICHE QU'UN POINT; ; DEBROUILLEZ VOUS POUR LE FAIRE; ; HERE YOU ONLY NEED TO DISPLAY ONE POINT; ; DO IT YOURSELF; [Français] Au premier coup d'oeil ça m'a fait peur ! C'est en lisant le code que j'ai compris ce que tu voulais dire [English] This worried me at first sight ! I understood what you meant later by reading the code Quote Link to comment Share on other sites More sharing options...
Azrael Posted May 30, 2006 Author Report Share Posted May 30, 2006 [Français] Si une bonne âme pouvait me donner une routine d'affichage de point, je pense que ce serait plus rapide que de demander au Blitter de le faire, non ? Comme ça les gens n'auraient pas peur de cette routine [English] If a generous mind can tell me how to display a point, it would certainly be faster than asking the blitter to do so. And then people won't be affraid of that line routine. Quote Link to comment Share on other sites More sharing options...
SebRmv Posted May 30, 2006 Report Share Posted May 30, 2006 beau travail Azrael en tout cas [english] congratulations Quote Link to comment Share on other sites More sharing options...
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