static void fadePalette(sbyte fade, sbyte start, word iter, byte *palette);\r
static byte tmppal[PAL_SIZE];\r
\r
+//===========================================================================\r
+\r
+/*\r
+=======================\r
+=\r
+= VL_Startup\r
+=\r
+=======================\r
+*/\r
+\r
+void VL_Startup (global_game_variables_t *gvar)\r
+{\r
+ __asm cld;\r
+\r
+ VGAmodeX(1/*TODO other modes*/, 1, gvar);\r
+ VL_LoadPalFileCore(gvar->video.palette, gvar);\r
+ //Quit ("Improper video card! If you really have a VGA card that I am not\ndetecting it!", gvar);\r
+}\r
+\r
+\r
+\r
+/*\r
+=======================\r
+=\r
+= VL_Shutdown\r
+=\r
+=======================\r
+*/\r
+\r
+void VL_Shutdown (global_game_variables_t *gvar)\r
+{\r
+ VGAmodeX(0, 1, gvar);\r
+}\r
+\r
+/*\r
+=======================\r
+=\r
+= VL_SetVGAPlaneMode\r
+=\r
+=======================\r
+*/\r
+#if 0\r
+void VL_SetVGAPlaneMode (global_game_variables_t *gvar)\r
+{\r
+ VL_vgaSetMode(VGA_256_COLOR_MODE);\r
+ VL_DePlaneVGA ();\r
+ VGAMAPMASK(15);\r
+ VL_SetLineWidth (40, &gvar->video.ofs);\r
+}\r
+#endif\r
+\r
+//===========================================================================\r
+\r
+/*\r
+=================\r
+=\r
+= VL_ClearVideo\r
+=\r
+= Fill the entire video buffer with a given color\r
+=\r
+=================\r
+*/\r
+\r
+void VL_ClearVideo (byte color)\r
+{\r
+ __asm {\r
+ mov dx,GC_INDEX\r
+ mov al,GC_MODE\r
+ out dx,al\r
+ inc dx\r
+ in al,dx\r
+ and al,0xfc // write mode 0 to store directly to video\r
+ out dx,al\r
+\r
+ mov dx,SC_INDEX\r
+ mov ax,SC_MAPMASK+15*256\r
+ out dx,ax // write through all four planes\r
+\r
+ mov ax,SCREENSEG\r
+ mov es,ax\r
+ mov al,[color]\r
+ mov ah,al\r
+ mov cx,0x8000 // 0x8000 words, clearing 8 video bytes/word\r
+ xor di,di\r
+ rep stosw\r
+ }\r
+}\r
+\r
+/*\r
+=============================================================================\r
+\r
+ VGA REGISTER MANAGEMENT ROUTINES\r
+\r
+=============================================================================\r
+*/\r
+\r
+\r
+/*\r
+=================\r
+=\r
+= VL_DePlaneVGA\r
+=\r
+=================\r
+*/\r
+#if 0\r
+void VL_DePlaneVGA (void)\r
+{\r
+\r
+//\r
+// change CPU addressing to non linear mode\r
+//\r
+\r
+//\r
+// turn off chain 4 and odd/even\r
+//\r
+ outportb (SC_INDEX,SC_MEMMODE);\r
+ outportb (SC_INDEX+1,(inportb(SC_INDEX+1)&~8)|4);\r
+\r
+ outportb (SC_INDEX,SC_MAPMASK); // leave this set throughought\r
+\r
+//\r
+// turn off odd/even and set write mode 0\r
+//\r
+ outportb (GC_INDEX,GC_MODE);\r
+ outportb (GC_INDEX+1,inportb(GC_INDEX+1)&~0x13);\r
+\r
+//\r
+// turn off chain\r
+//\r
+ outportb (GC_INDEX,GC_MISCELLANEOUS);\r
+ outportb (GC_INDEX+1,inportb(GC_INDEX+1)&~2);\r
+\r
+//\r
+// clear the entire buffer space, because int 10h only did 16 k / plane\r
+//\r
+ VL_ClearVideo (0);\r
+\r
+//\r
+// change CRTC scanning from doubleword to byte mode, allowing >64k scans\r
+//\r
+ outportb (CRTC_INDEX,CRTC_UNDERLINE);\r
+ outportb (CRTC_INDEX+1,inportb(CRTC_INDEX+1)&~0x40);\r
+\r
+ outportb (CRTC_INDEX,CRTC_MODE);\r
+ outportb (CRTC_INDEX+1,inportb(CRTC_INDEX+1)|0x40);\r
+}\r
+#endif\r
+//===========================================================================\r
+\r
+/*\r
+====================\r
+=\r
+= VL_SetSplitScreen\r
+=\r
+====================\r
+*/\r
+\r
+void VL_SetSplitScreen (int linenum)\r
+{\r
+ VL_WaitVBL (1);\r
+ linenum=linenum*2-1;\r
+ outportb (CRTC_INDEX,CRTC_LINECOMPARE);\r
+ outportb (CRTC_INDEX+1,linenum % 256);\r
+ outportb (CRTC_INDEX,CRTC_OVERFLOW);\r
+ outportb (CRTC_INDEX+1, 1+16*(linenum/256));\r
+ outportb (CRTC_INDEX,CRTC_MAXSCANLINE);\r
+ outportb (CRTC_INDEX+1,inportb(CRTC_INDEX+1) & (255-64));\r
+}\r
+\r
/////////////////////////////////////////////////////////////////////////////\r
-// //\r
-// setvideo() - This function Manages the video modes //\r
-// //\r
+// //\r
+// setvideo() - This function Manages the video modes //\r
+// //\r
/////////////////////////////////////////////////////////////////////////////\r
void VGAmodeX(sword vq, boolean cmem, global_game_variables_t *gv)\r
{\r
// get old video mode\r
//in.h.ah = 0xf;\r
//int86(0x10, &in, &out);\r
- gv->video.old_mode = vgaGetMode();//out.h.al;\r
+ gv->video.old_mode = VL_vgaGetMode();//out.h.al;\r
// enter mode\r
modexEnter(vq, cmem, gv);\r
break;\r
}\r
}\r
\r
-static void\r
-vgaSetMode(byte mode)\r
+//---------------------------------------------------\r
+//\r
+// Use the bios to set the current video mode\r
+//\r
+\r
+/*static */void\r
+VL_vgaSetMode(byte mode)\r
{\r
union REGS regs;\r
\r
regs.h.ah = SET_MODE;\r
regs.h.al = mode;\r
int86(VIDEO_INT, ®s, ®s);\r
- //int10_setmode(mode);\r
}\r
\r
//---------------------------------------------------\r
// Use the bios to get the current video mode\r
//\r
\r
-byte/*FIXME: why long? "long" is 32-bit datatype, VGA modes are 8-bit numbers. */\r
-vgaGetMode()\r
+byte\r
+VL_vgaGetMode(void)\r
{\r
return int10_getmode();\r
}\r
/* -========================= Entry Points ==========================- */\r
void modexEnter(sword vq, boolean cmem, global_game_variables_t *gv)\r
{\r
- word i;\r
+ //word i;\r
struct vga_mode_params cm;\r
//int CRTParmCount;\r
\r
- vgaSetMode(VGA_256_COLOR_MODE);\r
+ VL_vgaSetMode(VGA_256_COLOR_MODE);\r
vga_enable_256color_modex();\r
\r
update_state_from_vga();\r
vga_state.vga_stride = cm.offset * 2;\r
vga_write_crtc_mode(&cm,0);\r
\r
- /* clear video memory */\r
+ // clear video memory //\r
switch (cmem)\r
{\r
- case 1: {\r
- /* clear video memory */\r
- dword far*ptr=(dword far*)vga_state.vga_graphics_ram;//VGA; /* used for faster screen clearing */\r
+ case 1:\r
+ {\r
+#if 0\r
+ dword far*ptr=(dword far*)vga_state.vga_graphics_ram;//VGA; // used for faster screen clearing //\r
vga_write_sequencer(2/*map mask register*/,0xf/*all 4 planes*/);\r
for(i = 0;i < 0x4000; i++) ptr[i] = 0x0000; // 0x4000 x dword = 64KB\r
- /* fix up the palette and everything */\r
- modexPalBlack(); //reset the palette~\r
+ // fix up the palette and everything //\r
+ modexPalBlack(); //reset the palette~//\r
+#endif\r
+ //\r
+ // clear the entire buffer space, because int 10h only did 16 k / plane\r
+ //\r
+ VL_ClearVideo (0);\r
}\r
break;\r
}\r
-// VL_SetLineWidth (cm.offset, &gv->video.ofs);\r
+ VL_SetLineWidth (cm.offset, &gv->video.ofs);\r
gv->video.VL_Started=1;\r
}\r
\r
-void\r
-modexLeave() {\r
- /* VGAmodeX restores original mode and palette */\r
- vgaSetMode(TEXT_MODE);\r
+void modexLeave(void)\r
+{\r
+ // VGAmodeX restores original mode and palette\r
+ VL_vgaSetMode(TEXT_MODE);\r
}\r
\r
page_t\r
}\r
\r
\r
-/* save and load */\r
-void\r
-modexPalSave(byte *palette) {\r
+// save and load\r
+void modexPalSave(byte *palette)\r
+{\r
int i;\r
\r
- outp(PAL_READ_REG, 0); /* start at palette entry 0 */\r
- for(i=0; i<PAL_SIZE; i++) {\r
- palette[i] = inp(PAL_DATA_REG); /* read the palette data */\r
+ outp(PAL_READ_REG, 0); // start at palette entry 0\r
+ for(i=0; i<PAL_SIZE; i++)\r
+ {\r
+ palette[i] = inp(PAL_DATA_REG); // read the palette data\r
}\r
}\r
\r
fclose(file);\r
}\r
\r
-void VL_LoadPalFile(const char *filename, byte *palette)\r
+void VL_LoadPalFile(const char *filename, byte *palette, global_game_variables_t *gvar)\r
{\r
- VL_LoadPalFilewithoffset(filename, palette, 8);\r
- VL_LoadPalFileCore(palette);\r
+ VL_LoadPalFilewithoffset(filename, palette, 8, gvar);\r
+// VL_LoadPalFileCore(palette);\r
}\r
\r
-void VL_LoadPalFileCore(byte *palette)\r
+void VL_LoadPalFileCore(byte *palette, global_game_variables_t *gvar)\r
{\r
- VL_LoadPalFilewithoffset("data/16.pal", palette, 0);\r
+ VL_LoadPalFilewithoffset("data/16.pal", palette, 0, gvar);\r
}\r
\r
-void VL_LoadPalFilewithoffset(const char *filename, byte *palette, word o)\r
+void VL_LoadPalFilewithoffset(const char *filename, byte *palette, word o, global_game_variables_t *gvar)\r
{\r
int fd;\r
\r
read(fd,palette, PAL_SIZE);\r
close(fd);\r
\r
- VL_UpdatePaletteWrite(palette, o);\r
+ VL_UpdatePaletteWrite(palette, o, gvar);\r
}\r
}\r
\r
-void VL_UpdatePaletteWrite(byte *palette, word o)\r
+void VL_UpdatePaletteWrite(byte *palette, word o, global_game_variables_t *gvar)\r
{\r
word i;\r
vga_palette_lseek(/*1+*/o);\r
- for (i=o;i < 256-o;i++) vga_palette_write(palette[(i*3)+0]>>2,palette[(i*3)+1]>>2,palette[(i*3)+2]>>2);\r
+ //for (i=o;i < 256-o;i++)\r
+ for (i=0;i < 256-o;i++)\r
+ vga_palette_write(palette[(i*3)+0]>>2,palette[(i*3)+1]>>2,palette[(i*3)+2]>>2);\r
+\r
+ VL_PaletteSync(gvar);\r
+}\r
+\r
+void VL_PaletteSync(global_game_variables_t *gvar)\r
+{\r
+ modexPalSave(&gvar->video.palette);\r
}\r
\r
void\r
}\r
}\r
}\r
-\r
+#if 0\r
/////////////////////////////////////////////////////////////////////////////\r
// //\r
// cls() - This clears the screen to the specified color, on the VGA or on //\r
//_fmemset(VGA, color, 16000);\r
_fmemset(Where, color, page->stridew*page->height);\r
}\r
-\r
+#endif\r
//\r
// pattern filler from joncampbell123's code\r
//\r
projects / 16.git / blobdiff