Renamed tgi_textheight -> tgi_gettextheight, tgi_textwidth -> tgi_gettextwidth

[cc65] / libsrc / tgi / tgi_init.s

diff --git a/libsrc/tgi/tgi_init.s b/libsrc/tgi/tgi_init.s
index 68254785b7e2ee46778175c269e75c1b998ad502..2100d06e131f6a95d7ca24053c4f689d3565f89b 100644 (file)
--- a/libsrc/tgi/tgi_init.s
+++ b/libsrc/tgi/tgi_init.s
@@ -1,52 +1,76 @@
 ;
 ; Ullrich von Bassewitz, 21.06.2002
 ;
-; void __fastcall__ tgi_init (unsigned char mode);
-; /* Initialize the given graphics mode. */
+; void __fastcall__ tgi_init (void);
+; /* Initialize the already loaded graphics driver */
 
 
         .include        "tgi-kernel.inc"
         .include        "tgi-error.inc"
 
+        .import         pushax, pusha, decax1
         .importzp       ptr1
-        .import         _tgi_done
-        .import         _tgi_setcolor
-        .export         _tgi_init
 
-_tgi_init:
-        pha                             ; Save mode
+
+;----------------------------------------------------------------------------
+
+.code
+.proc   _tgi_init
+
         jsr     _tgi_done               ; Switch off graphics if needed
-        pla
-        sta     _tgi_mode               ; Remember the mode
         jsr     tgi_init                ; Go into graphics mode
         jsr     tgi_geterror            ; Get the error code
         sta     _tgi_error              ; Save for later reference
         cmp     #TGI_ERR_OK
         bne     @L9                     ; Jump on error
 
-; Do driver initialization. First set the default palette.
+        inc     _tgi_gmode              ; Remember that graph mode is active
+
+; Get the maximum X and Y coordinate
+
+        jsr     _tgi_getxres
+        jsr     decax1
+        sta     _tgi_xmax
+        stx     _tgi_xmax+1
+
+        jsr     _tgi_getyres
+        jsr     decax1
+        sta     _tgi_ymax
+        stx     _tgi_ymax+1
+
+; Do driver initialization. Set draw and view pages.
+
+       lda     #0
+       jsr     tgi_setviewpage
+       lda     #0
+       jsr     tgi_setdrawpage
+
+; Set the default palette.
 
         jsr     tgi_getdefpalette       ; Get the default palette into A/X
         sta     ptr1
-        stx     ptr1+1
-        ora     ptr1+1                  ; Do we have a default palette?
-        beq     @L1                     ; Jump if no
-        jsr     tgi_setpalette          ; Set the default palette
+        stx     ptr1+1                  ; Save it
+        jsr     tgi_setpalette          ; Set the default palette.
+        jsr     tgi_geterror            ; Clear a possible error code
 
-; Set the drawing color to the maximum color
+; Set the drawing color to white
 
-@L1:    ldx     _tgi_colorcount
-        dex
-        txa
-        jsr     _tgi_setcolor           ; tgi_setcolor (tgi_getmaxcolor ());
+@L1:    lda     #tgi_color_white
+        jsr     _tgi_setcolor           ; tgi_setcolor (TGI_COLOR_WHITE);
 
-; Clear the screen
+; Set the text style
 
-        jmp     tgi_clear
+        lda     #<$100
+        ldx     #>$100
+        jsr     pushax                  ; Width scale = 1.0
+        jsr     pushax                  ; Heigh scale = 1.0
+        jsr     pusha                   ; Text direction = TGI_TEXT_HORIZONTAL
+        jmp     _tgi_settextstyle       ; A = Font = TGI_FONT_BITMAP
 
 ; Error exit
 
-@L9:    lda     #$00
-        sta     _tgi_mode               ; Clear the mode if init was not successful
-        rts
+@L9:    rts
+
+.endproc
+