--- /dev/null
+/* FCE Ultra - NES/Famicom Emulator
+ *
+ * Copyright notice for this file:
+ * Copyright (C) 1998 \Firebug\
+ * Copyright (C) 2002 Ben Parnell
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <stdio.h>
+#include <string.h>
+#include <vga.h>
+#include <sys/io.h>
+
+#define inportb inb
+#define outportb(port, value) outb(value, port)
+#define outportw(port, value) outw(value, port)
+
+#include "main.h"
+#include "svgalib.h"
+#include "svga-video.h"
+
+
+int vmode=1;
+
+#ifdef FRAMESKIP
+int FCEUDfskip=0;
+#endif
+
+static int vidready=0;
+static int conlock=0;
+
+void LockConsole(void)
+{
+ if(!conlock)
+ {
+ vga_lockvc();
+ conlock=1;
+ FCEUI_DispMessage("Console locked.");
+ }
+}
+
+void UnlockConsole(void)
+{
+ if(conlock)
+ {
+ vga_unlockvc();
+ conlock=0;
+ FCEUI_DispMessage("Console unlocked.");
+ }
+}
+
+void SetBorder(void)
+{
+ if(!conlock)
+ vga_lockvc();
+ inportb(0x3da);
+ outportb(0x3c0,(0x11|0x20));
+ outportb(0x3c0,0x80);
+ if(!conlock)
+ vga_unlockvc();
+}
+
+#include "vgatweak.c"
+
+void TweakVGA(int VGAMode)
+{
+ int I;
+
+ if(!conlock)
+ vga_lockvc();
+
+ outportb(0x3C8,0x00);
+ for(I=0;I<768;I++) outportb(0x3C9,0x00);
+
+ outportb(0x3D4,0x11);
+ I=inportb(0x3D5)&0x7F;
+ outportb(0x3D4,0x11);
+ outportb(0x3D5,I);
+
+ switch(VGAMode)
+ {
+ case 1: for(I=0;I<25;I++) VGAPortSet(v256x240[I]);break;
+ case 2: for(I=0;I<25;I++) VGAPortSet(v256x256[I]);break;
+ case 3: for(I=0;I<25;I++) VGAPortSet(v256x256S[I]);break;
+ case 6: for(I=0;I<25;I++) VGAPortSet(v256x224S[I]);break;
+ case 8: for(I=0;I<25;I++) VGAPortSet(v256x224_103[I]);break;
+ default: break;
+ }
+
+ outportb(0x3da,0);
+ if(!conlock)
+ vga_unlockvc();
+}
+
+
+static uint8 palettedbr[256],palettedbg[256],palettedbb[256];
+
+static void FlushPalette(void)
+{
+ int x;
+ for(x=0;x<256;x++)
+ {
+ int z=x;
+ if(vmode==4 || vmode==5 || vmode==7) z^=0x80;
+ vga_setpalette(z,palettedbr[x]>>2,palettedbg[x]>>2,palettedbb[x]>>2);
+ }
+}
+
+void FCEUD_SetPalette(uint8 index, uint8 r, uint8 g, uint8 b)
+{
+ palettedbr[index]=r;
+ palettedbg[index]=g;
+ palettedbb[index]=b;
+
+ if(vidready)
+ {
+ if(vmode==4 || vmode==5 || vmode==7) index^=0x80;
+ vga_setpalette(index,r>>2,g>>2,b>>2);
+ }
+}
+
+
+void FCEUD_GetPalette(uint8 i, uint8 *r, uint8 *g, uint8 *b)
+{
+ *r=palettedbr[i];
+ *g=palettedbg[i];
+ *b=palettedbb[i];
+}
+
+static void vcfix(void)
+{
+ int z;
+
+ if(!conlock)
+ vga_lockvc();
+ z=inportb(0x3cc);
+ if(!conlock)
+ vga_unlockvc();
+ if(z!=0xe3 && z!=0xe7) // Common value in all tweaked video modes(and not in 320x200 mode).
+ {
+ TweakVGA(vmode);
+ SetBorder();
+ FlushPalette();
+ }
+}
+
+static uint8 *ScreenLoc;
+
+int InitVideo(void)
+{
+ #ifdef DUMMY
+ return(1);
+ #endif
+ vidready=0;
+
+ if(vmode<=3 || vmode==6 || vmode==8)
+ {
+ if(vga_getcurrentchipset()==FBDEV)
+ {
+ puts("Tweaked VGA video modes will not work. Using a 320x240 video mode instead...");
+ vmode=7;
+ }
+ }
+
+ switch(vmode)
+ {
+ default:
+ case 1:
+ case 2:
+ case 3:
+ case 6:
+ case 8:
+ vga_setmode(G320x200x256);
+ vidready|=1;
+ ScreenLoc=vga_getgraphmem();
+ TweakVGA(vmode);
+ SetBorder();
+ memset(ScreenLoc,128,256*256);
+ break;
+ case 4:
+ case 5:
+ if(!(vga_getmodeinfo(G640x480x256)->flags & CAPABLE_LINEAR))
+ {
+ puts("Video: No linear addressing mode available!");
+ return 0;
+ }
+ if(vga_setmode(G640x480x256)==-1)
+ {
+ puts("Video: Could not set 640x480x8bpp video mode!");
+ return 0;
+ }
+ vidready|=1;
+
+ vga_setpage(0);
+ if(vga_setlinearaddressing()!=-1)
+ ScreenLoc=vga_getgraphmem();
+ else
+ {
+ puts("Video: Could not set linear addressing!");
+ return 0;
+ }
+ memset(ScreenLoc,0,640*480);
+ break;
+ case 7:
+ if(!(vga_getmodeinfo(G320x240x256V)->flags & CAPABLE_LINEAR))
+ {
+ puts("Video: No linear addressing mode available!");
+ return 0;
+ }
+ if(vga_setmode(G320x240x256V)==-1)
+ {
+ puts("Video: Could not set 320x240x8bpp video mode!");
+ return 0;
+ }
+ vidready|=1;
+
+ vga_setpage(0);
+ if(vga_setlinearaddressing()!=-1)
+ ScreenLoc=vga_getgraphmem();
+ else
+ {
+ puts("Video: Could not set linear addressing!");
+ return 0;
+ }
+ memset(ScreenLoc,0,320*240);
+ break;
+ }
+ vidready|=2;
+ FlushPalette(); // Needed for cheat console code(and it isn't a bad thing to do anyway...).
+ return 1;
+}
+
+void KillVideo(void)
+{
+ if(vidready)
+ {
+ vga_setmode(TEXT);
+ vidready=0;
+ }
+}
+
+
+void BlitScreen(uint8 *XBuf)
+{
+ static int conto=0;
+ uint8 *dest;
+ int tlines;
+ #ifdef DUMMY
+ return;
+ #endif
+ #ifdef FRAMESKIP
+ FCEUI_FrameSkip(FCEUDfskip);
+ #endif
+
+ if(doptions&DO_VSYNC && !NoWaiting)
+ {
+ vga_waitretrace();
+ }
+
+ tlines=erendline-srendline+1;
+
+ dest=ScreenLoc;
+
+ if(vmode!=4 && vmode!=5 && vmode!=7)
+ {
+ conto=(conto+1)&0x3F;
+ if(!conto) vcfix();
+ }
+ switch(vmode)
+ {
+ case 1:dest+=(((240-tlines)>>1)<<8);break;
+ case 2:
+ case 3:dest+=(((256-tlines)>>1)<<8);break;
+ case 4:
+ case 5:dest+=(((240-tlines)>>1)*640+((640-512)>>1));break;
+ case 8:
+ case 6:if(tlines>224) tlines=224;dest+=(((224-tlines)>>1)<<8);break;
+ case 7:dest+=(((240-tlines)>>1)*320)+32;break;
+ }
+
+ XBuf+=(srendline<<8)+(srendline<<4);
+
+ if(eoptions&EO_CLIPSIDES)
+ {
+ if(vmode==5)
+ {
+ asm volatile(
+ "xorl %%edx, %%edx\n\t"
+ "ckoop1:\n\t"
+ "movb $120,%%al \n\t"
+ "ckoop2:\n\t"
+ "movb 1(%%esi),%%dl\n\t"
+ "shl $16,%%edx\n\t"
+ "movb (%%esi),%%dl\n\t"
+ "xorl $0x00800080,%%edx\n\t"
+ "movl %%edx,(%%edi)\n\t"
+ "addl $2,%%esi\n\t"
+ "addl $4,%%edi\n\t"
+ "decb %%al\n\t"
+ "jne ckoop2\n\t"
+
+ "addl $32,%%esi\n\t"
+ "addl $800,%%edi\n\t"
+ "decb %%bl\n\t"
+ "jne ckoop1\n\t"
+ :
+ : "S" (XBuf+8), "D" (dest+8), "b" (tlines)
+ : "%al", "%edx", "%cc" );
+ }
+ else if(vmode==4)
+ {
+ asm volatile(
+ "cyoop1:\n\t"
+ "movb $120,%%al \n\t"
+ "cyoop2:\n\t"
+ "movb 1(%%esi),%%dh\n\t"
+ "movb %%dh,%%dl\n\t"
+ "shl $16,%%edx\n\t"
+ "movb (%%esi),%%dl\n\t"
+ "movb %%dl,%%dh\n\t" // Ugh
+ "xorl $0x80808080,%%edx\n\t"
+ "movl %%edx,(%%edi)\n\t"
+ "addl $2,%%esi\n\t"
+ "addl $4,%%edi\n\t"
+ "decb %%al\n\t"
+ "jne cyoop2\n\t"
+
+ "addl $32,%%esi\n\t"
+ "addl $800,%%edi\n\t"
+ "decb %%bl\n\t"
+ "jne cyoop1\n\t"
+ :
+ : "S" (XBuf+8), "D" (dest+8), "b" (tlines)
+ : "%al", "%edx", "%cc" );
+ }
+ else if(vmode==7)
+ {
+ asm volatile(
+ "cgoop81:\n\t"
+ "movl $30,%%eax\n\t"
+ "cgoop82:\n\t"
+ "movl (%%esi),%%edx\n\t"
+ "movl 4(%%esi),%%ecx\n\t"
+ "xorl $0x80808080,%%edx\n\t"
+ "xorl $0x80808080,%%ecx\n\t"
+ "movl %%edx,(%%edi)\n\t"
+ "movl %%ecx,4(%%edi)\n\t"
+ "addl $8,%%esi\n\t"
+ "addl $8,%%edi\n\t"
+ "decl %%eax\n\t"
+ "jne cgoop82\n\t"
+ "addl $80,%%edi\n\t"
+ "addl $32,%%esi\n\t"
+ "decb %%bl\n\t"
+ "jne cgoop81\n\t"
+ :
+ : "S" (XBuf+8), "D" (dest+8), "b" (tlines)
+ : "%eax","%cc","%edx","%ecx" );
+ }
+ else
+ {
+ asm volatile(
+ "cgoop1:\n\t"
+ "movl $30,%%eax\n\t"
+ "cgoop2:\n\t"
+ "movl (%%esi),%%edx\n\t"
+ "movl 4(%%esi),%%ecx\n\t"
+ "movl %%edx,(%%edi)\n\t"
+ "movl %%ecx,4(%%edi)\n\t"
+ "addl $8,%%esi\n\t"
+ "addl $8,%%edi\n\t"
+ "decl %%eax\n\t"
+ "jne cgoop2\n\t"
+ "addl $32,%%esi\n\t"
+ "addl $16,%%edi\n\t"
+ "decb %%bl\n\t"
+ "jne cgoop1\n\t"
+ :
+ : "S" (XBuf+8), "D" (dest+8), "b" (tlines)
+ : "%eax","%cc","%edx","%ecx" );
+ }
+ }
+ else
+ {
+ if(vmode==5)
+ {
+ asm volatile(
+ "xorl %%edx, %%edx\n\t"
+ "koop1:\n\t"
+ "movb $128,%%al \n\t"
+ "koop2:\n\t"
+ "movb 1(%%esi),%%dl\n\t"
+ "shl $16,%%edx\n\t"
+ "movb (%%esi),%%dl\n\t"
+ "xorl $0x00800080,%%edx\n\t"
+ "movl %%edx,(%%edi)\n\t"
+ "addl $2,%%esi\n\t"
+ "addl $4,%%edi\n\t"
+ "decb %%al\n\t"
+ "jne koop2\n\t"
+
+ "addl $16,%%esi\n\t"
+ "addl $768,%%edi\n\t"
+ "decb %%bl\n\t"
+ "jne koop1\n\t"
+ :
+ : "S" (XBuf), "D" (dest), "b" (tlines)
+ : "%al", "%edx", "%cc" );
+ }
+ else if(vmode==4)
+ {
+ asm volatile(
+ "yoop1:\n\t"
+ "movb $128,%%al \n\t"
+ "yoop2:\n\t"
+ "movb 1(%%esi),%%dh\n\t"
+ "movb %%dh,%%dl\n\t"
+ "shl $16,%%edx\n\t"
+ "movb (%%esi),%%dl\n\t"
+ "movb %%dl,%%dh\n\t" // Ugh
+ "xorl $0x80808080,%%edx\n\t"
+ "movl %%edx,(%%edi)\n\t"
+ "addl $2,%%esi\n\t"
+ "addl $4,%%edi\n\t"
+ "decb %%al\n\t"
+ "jne yoop2\n\t"
+
+ "addl $16,%%esi\n\t"
+ "addl $768,%%edi\n\t"
+ "decb %%bl\n\t"
+ "jne yoop1\n\t"
+ :
+ : "S" (XBuf), "D" (dest), "b" (tlines)
+ : "%al", "%edx", "%cc" );
+ }
+ else if(vmode==7)
+ {
+ asm volatile(
+ "goop81:\n\t"
+ "movl $32,%%eax\n\t"
+ "goop82:\n\t"
+ "movl (%%esi),%%edx\n\t"
+ "movl 4(%%esi),%%ecx\n\t"
+ "xorl $0x80808080,%%edx\n\t"
+ "xorl $0x80808080,%%ecx\n\t"
+ "movl %%edx,(%%edi)\n\t"
+ "movl %%ecx,4(%%edi)\n\t"
+ "addl $8,%%esi\n\t"
+ "addl $8,%%edi\n\t"
+ "decl %%eax\n\t"
+ "jne goop82\n\t"
+ "addl $64,%%edi\n\t"
+ "addl $16,%%esi\n\t"
+ "decb %%bl\n\t"
+ "jne goop81\n\t"
+ :
+ : "S" (XBuf), "D" (dest), "b" (tlines)
+ : "%eax","%cc","%edx","%ecx" );
+ }
+ else
+ {
+ asm volatile(
+ "goop1:\n\t"
+ "movl $32,%%eax\n\t"
+ "goop2:\n\t"
+ "movl (%%esi),%%edx\n\t"
+ "movl 4(%%esi),%%ecx\n\t"
+ "movl %%edx,(%%edi)\n\t"
+ "movl %%ecx,4(%%edi)\n\t"
+ "addl $8,%%esi\n\t"
+ "addl $8,%%edi\n\t"
+ "decl %%eax\n\t"
+ "jne goop2\n\t"
+ "addl $16,%%esi\n\t"
+ "decb %%bl\n\t"
+ "jne goop1\n\t"
+ :
+ : "S" (XBuf), "D" (dest), "b" (tlines)
+ : "%eax","%cc","%edx","%ecx" );
+ }
+ }
+}
+
+
notaz.gp2x.de / fceu.git / blobdiff