diff options
Diffstat (limited to 'src/mesa/drivers/dos/dosmesa.c')
| -rw-r--r-- | src/mesa/drivers/dos/dosmesa.c | 1542 |
1 files changed, 0 insertions, 1542 deletions
diff --git a/src/mesa/drivers/dos/dosmesa.c b/src/mesa/drivers/dos/dosmesa.c deleted file mode 100644 index 6ee7291de10..00000000000 --- a/src/mesa/drivers/dos/dosmesa.c +++ /dev/null @@ -1,1542 +0,0 @@ -/* $Id: dosmesa.c,v 1.4 2001/03/03 20:33:29 brianp Exp $ */
-
-/*
- * Mesa 3-D graphics library
- * Version: 2.3
- * Copyright (C) 1995-1997 Brian Paul
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library 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
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
-
-/*
- * $Log: dosmesa.c,v $ - * Revision 1.4 2001/03/03 20:33:29 brianp - * lots of gl_*() to _mesa_*() namespace clean-up - * - * Revision 1.3 2000/11/22 08:55:52 joukj - * - * - * Modified Files: - * Mesa/src/Allegro/amesa.c Mesa/src/DOS/dosmesa.c - * Mesa/src/FX/fxdd.c Mesa/src/FX/fxdrv.h - * Mesa/src/FX/fxfastpath.c - * Mesa/src/GGI/include/ggi/mesa/ggimesa.h - * Mesa/src/OSmesa/osmesa.c Mesa/src/SVGA/svgamesa.c - * Mesa/src/Trace/tr_control.c Mesa/src/Windows/wgl.c - * Mesa/src/X/xmesaP.h Mesa/src/X86/3dnow.c Mesa/src/X86/katmai.c - * Mesa/src/X86/x86.c - * Removed Files: - * Mesa/src/mms_depend - * - * Oops,... all files containing Caps in directory name or file name were - * missing in my types->mtypes commit. - * - * ---------------------------------------------------------------------- - * - * Revision 1.2 2000/09/26 20:54:10 brianp - * First batch of OpenGL SI related changes: - * Renamed struct gl_context to struct __GLcontextRec. - * Include glcore.h, setup GL imports/exports. - * Replaced gl_ prefix with _mesa_ prefix in context.[ch] functions. - * GLcontext's Visual field is no longer a pointer. - * - * Revision 1.1.1.1 1999/08/19 00:55:41 jtg - * Imported sources - * - * Revision 1.2 1999/03/28 21:11:57 brianp - * updated SetBuffer driver function - * - * Revision 1.1 1999/02/24 03:56:31 brianp - * initial check-in - *
- * - * Revision 1.5 1997/06/19 22:00:00 Brian Paul
- * Removed all ColorShift stuff - *
- * Revision 1.4 1997/06/03 19:00:00 Brian Paul
- * Replaced VB->Unclipped[] with VB->ClipMask[]
- *
- * Revision 1.3 1997/05/28 07:00:00 Phil Frisbie, Jr.
- * Now pass red/green/blue/alpha bits to gl_create_visual()
- * Fixed DJGPP mode 13 support.
- *
- * Revision 1.2 1996/12/08 16:13:45 Charlie
- * Added VESA support via Scitechs SVGA kit.
- *
- * Revision 1.1 1996/12/08 16:09:52 Charlie
- * Initial revision
- *
- */
-
-
-/*
- * DOS VGA/VESA/MGL/Mesa interface.
- *
- */
-
-/*
- *
- * TODO: (cw)
- * Improve the colour matcher for rgb non vesa modes, its pretty bad and incorrect
- * Keyboard interrupt.
- * Comments and tidy up.
- * Add support for VESA without SVGAKIT.
- * DirectX Support.
- * Better GLIDE Support.
- * Clear up the #ifdef madness.
- */
-
-#ifdef DOSVGA
-
-#if defined(DOSVGA) && !defined(GLIDE) && defined(DJGPP) && !defined(UNIVBE) && !defined(MGL)
-
-/* Should help cut down on the crazy #if`s */
-#define MODE13 1
-
-#else
-#undef MODE13
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <string.h>
-#include <dos.h>
-
-#ifdef DJGPP
-#include <go32.h>
-#endif
-
-#ifdef MGL
-#include <mgraph.h>
-#endif
-
-#include "GL/DOSmesa.h"
-#include "context.h"
-#include "matrix.h"
-#include "mtypes.h" -
-#ifdef GLIDE
-
-static void glideshutdown( void );
-#include "vb.h"
-#include "glide.h"
-
-/* the glide modes available, set one */
-
-//#define GLIDE_MODE GR_RESOLUTION_
-#define GLIDE_MODE GR_RESOLUTION_800x600
-//#define GLIDE_MODE GR_RESOLUTION_640x480
-
-static GrVertex gr_vtx,gr_vtx1,gr_vtx2;
-
-#endif
-
-#ifdef UNIVBE
-/* You get this file from Scitechs VESA development kit */
-#include "svga.h"
-
-/*
- Set these to the VESA mode you require, the first is for 256 colour modes,
- the other is High colour modes, they must both be the same XRes and YRes.
- */
-
-#define VESA_256COLOUR_MODE 0x11c
-#define VESA_HICOLOUR_MODE 0x11f
-
-#endif
-
-struct DOSmesa_context {
- GLcontext *gl_ctx; /* the core Mesa context */
- GLvisual *gl_vis; /* describes the color buffer */
- GLframebuffer *gl_buffer; /* the ancillary buffers */
- GLuint index; /* current color index */
- GLint red, green, blue; /* current rgb color */
- GLint width, height; /* size of color buffer */
- GLint depth; /* bits per pixel (8,16,24 or 32) */
-};
-
-static DOSMesaContext DOSMesa = NULL; /* the current context */
-
-#ifdef UNIVBE
-SV_devCtx *DC=NULL;
-int useLinear = TRUE;
-SV_modeInfo *mi=NULL;
-unsigned long modeNumber = 0;
-
-int activePage = 0;
-int visualPage = 1;
-
-#endif
-
-#if defined(MODE13)
-
-/* DOSVGA With no UniVBE support */
-
-unsigned char *video_buffer;
-
-#define VID_BUF(x,y) *(video_buffer+x+(y*320))
-
-#if defined(__WATCOMC__) && defined(__386__) && defined(__DOS__)
-
-void setupcopy(void);
-void copyscr(void);
-
-/* Watcom C specfic, screen copy and clear */
-
-#pragma aux setupcopy = \
- ".386P"\
- "push ebp" \
- "mov esi,video_buffer" \
- "mov edi,0xa0000" \
- "mov ecx,2000" \
- "xor ebp,ebp";
-
-#pragma aux copyscr = \
- ".386P" \
- "lop1: mov eax,[esi]"\
- "mov ebx,[esi+4]"\
- "mov edx,[esi+8]"\
- "mov [edi],eax"\
- "mov eax,[esi+12]"\
- "mov dword ptr [esi],ebp"\
- "mov dword ptr [esi+4],ebp"\
- "mov dword ptr [esi+8],ebp"\
- "mov dword ptr [esi+12],ebp"\
- "mov [edi+4],ebx"\
- "mov [edi+8],edx"\
- "mov [edi+12],eax"\
- "mov eax,[esi+16]"\
- "mov ebx,[esi+4+16]"\
- "mov edx,[esi+8+16]"\
- "mov [edi+16],eax"\
- "mov eax,[esi+12+16]"\
- "mov dword ptr [esi+16],ebp"\
- "mov dword ptr [esi+4+16],ebp"\
- "mov dword ptr [esi+8+16],ebp"\
- "mov dword ptr [esi+12+16],ebp"\
- "mov [edi+4+16],ebx"\
- "mov [edi+8+16],edx"\
- "mov [edi+12+16],eax"\
- "add esi,32"\
- "add edi,32"\
- "dec ecx"\
- "jnz lop1"\
- "pop ebp"\
- modify exact [edi esi eax ebx ecx] ;
-
-#endif // WATCOM
-
-#endif // MODE13
-
-/*
- * Convert Mesa window Y coordinate to VGA screen Y coordinate:
- */
-#define FLIP(Y) (DOSMesa->height-(Y)-1)
-
-unsigned short vga_cindex = 32768 ;
-
-static points_func choose_points_function( void );
-static line_func choose_line_function( void );
-static triangle_func choose_polygon_function( void );
-static void fast_tri(GLcontext *ctx,GLuint v0, GLuint v1, GLuint v2, GLuint pv );
-
-static points_func choose_points_function( void )
-{
- return NULL;
-}
-
-static line_func choose_line_function( void )
-{
- return NULL;
-}
-
-static triangle_func choose_triangle_function( void )
-{
- #if defined(MODE13)
- return NULL;
- #endif
-
- #if defined(GLIDE)
- return fast_tri;
- #endif
-
- return NULL;
-}
-
-
-#if defined(MODE13)
-
-void setgfxmode(void);
-void settextmode(void);
-
-#ifndef DJGPP
-#pragma aux setgfxmode = \
- "mov ax,13h" \
- "int 10h" \
- modify [eax];
-
-#pragma aux settextmode = \
- "mov ax,3h" \
- "int 10h" \
- modify [eax];
-#else
-void setgfxmode(void)
-{
- union REGS in_regs,out_regs;
-
- in_regs.x.ax = 0x13;
- int386(0x10,&in_regs,&out_regs);
-}
-
-void settextmode(void)
-{
- union REGS in_regs,out_regs;
-
- in_regs.x.ax = 0x3;
- int386(0x10,&in_regs,&out_regs);
-}
-
-#endif
-
-int set_video_mode(unsigned short x,unsigned short y,char mode)
-{
- setgfxmode();
- return 1; /* likelyhood of this failing is very small */
-}
-
-void restore_video_mode(void)
-{
- settextmode();
-}
-
-int vga_getcolors(void)
-{
- return vga_cindex;
-}
-
-int vga_getxdim(void)
-{
- return 320;
-}
-
-int vga_getydim(void)
-{
- return 200;
-}
-
-static unsigned short num_rgb_alloc = 1; /* start from 1, zero is black */
-
-/* an unlikely colour */
-static unsigned char last_r=1,last_g=255,last_b=99;
-
-extern void set_onecolor(int index,int R,int G,int B);
-
-static unsigned char rgbtable[64][64][64];
-
-void vga_setrgbcolor(int r,int g,int b)
-{
-
-/*
- * make this into a translation table
- */
-
- DOSMesa->red = r;
- DOSMesa->green = g ;
- DOSMesa->blue = b ;
-
- r/=4; g/=4; b/=4;
-
- if( (r == last_r) && (g == last_g) && (b == last_b) ) return;
-
- last_r = r ;
- last_g = g ;
- last_b = b ;
-
- if(r+g+b == 0 ) {
- DOSMesa->index = 0 ;
- return ;
- }
-
- if( rgbtable[r][g][b] == 0 ) {
- /* not allocated yet */
- if(num_rgb_alloc<256) {
- DOSMesa->index = num_rgb_alloc;
- set_onecolor(num_rgb_alloc,r,g,b);
- rgbtable[r][g][b] = num_rgb_alloc;
- num_rgb_alloc++;
- return;
-
- } else {
- /* need to search for a close colour */
- {
- unsigned short pass ;
-
- for(pass=0;pass<64;pass++) {
- if(r-pass>0) {
- if( rgbtable[r-pass][g][b] !=0 ) {
- rgbtable[r][g][b] = rgbtable[r-pass][g][b];
- DOSMesa->index = rgbtable[r-pass][g][b];
- return;
- }
- }
- if(r+pass<64) {
- if( rgbtable[r+pass][g][b] !=0 ) {
- rgbtable[r][g][b] = rgbtable[r+pass][g][b];
- DOSMesa->index = rgbtable[r+pass][g][b];
- return;
- }
- }
- }
- }
- rgbtable[r][g][b] = rand()%255;
- }
- }
- DOSMesa->index = rgbtable[r][g][b];
-}
-
-#if defined(DJGPP)
-static int dos_seg;
-#endif
-
-void vga_clear(void)
-{
-
-/* Check if we`re using watcom and DOS */
-#if defined(__WATCOMC__) && defined(__386__) && defined(__DOS__)
- setupcopy();
- copyscr();
-#else
-
-#if defined (DJGPP)
-
-
- asm ("
- pusha
- pushw %es
-
- movw _dos_seg, %es
-
- movl _video_buffer, %esi
- movl $0xa0000, %edi
-
- movl $64000, %ecx
-
- rep ; movsb
-
- popw %es
- popa
- ");
-
-#else
-
- /* copy the RAM buffer to the Video memory */
- memcpy((unsigned char *)0xa0000,video_buffer, vga_getxdim()*vga_getydim() );
-
-#endif //DJGPP
-
- /* clear the RAM buffer */
- memset(video_buffer,0, vga_getxdim()*vga_getydim() );
-
-#endif //WATCOMC
-
-}
-
-#ifndef DEBUG
-#define vga_drawpixel(x,y) { VID_BUF(x,y) = DOSMesa->index; }
-#else
-void vga_drawpixel(x,y)
-{
- VID_BUF(x,y) = DOSMesa->index;
-}
-#endif
-
-int vga_getpixel(int x,int y)
-{
- return 1;
-}
-
-void vga_flip(void)
-{
-
-}
-
-void vga_setcolor(int index)
-{
- /* does something, what i`ve no idea */
- DOSMesa->index = index;
-
-}
-
-#endif
-
-#if defined(UNIVBE)
-
-/* UniVBE VESA support */
-
-void set_video_mode(unsigned short x,unsigned short y,char mode)
-{
- if( setup_vesa_mode(x,y,mode) == FALSE ) {
- fprintf(stderr,"VESA: Set mode failed\n");
- exit(1);
- }
-}
-
-/*
- This is problematic as we don`t know what resolution the user program
- wants when we reach here. This is why the 256 colour and HiColour modes
- should be the same resolution, perhaps i`ll make this an environment
- variable
- */
-
-
-void check_mi(void)
-{
- if(mi!=0) return;
-
- if(DC==NULL) {
- DC = SV_init( TRUE );
- }
-
- if(modeNumber == 0 ) {
- modeNumber = VESA_HICOLOUR_MODE;
- }
-
- SV_getModeInfo(modeNumber,mi);
-
- return;
-}
-
-int setup_vesa_mode(short height,short width,short depth)
-{
- if(DC==NULL) {
- DC = SV_init( TRUE );
- /* how many bits per pixel */
- if( depth == 0)
- modeNumber = VESA_256COLOUR_MODE;
- else
- modeNumber = VESA_HICOLOUR_MODE;
- }
-
- /* Check if correct VESA Version is available */
- if( !DC || DC->VBEVersion < 0x0102) {
- fprintf(stderr,"Require a VESA VBE version 1.2 or higher\n");
- return FALSE;
- }
-
- /* Check for LFB Supprt */
- if(DC->VBEVersion < 0x0200 ) {
- useLinear = FALSE;
- } else {
- useLinear = TRUE ;
- }
-
- /* Get desired mode info */
- if(!SV_getModeInfo( modeNumber, mi))
- return FALSE;
-
- /* Set VESA mode */
- if(!SV_setMode(modeNumber | svMultiBuffer, FALSE, TRUE, mi->NumberOfPages) )
- return FALSE;
-
- return TRUE;
-}
-
-void restore_video_mode(void)
-{
- SV_restoreMode();
-}
-
-void vga_clear(void)
-{
- SV_clear(0);
-}
-
-void vga_flip(void)
-{
- activePage = 1-activePage;
- visualPage = 1-activePage;
-
- SV_setActivePage(activePage);
-
- /*
- Change false to true if you`re getting flickering
- even in double buffer mode, ( sets wait for Vertical retrace )
- */
- SV_setVisualPage(visualPage,false);
-}
-
-int vga_getcolors(void)
-{
- check_mi();
- switch ( mi->BitsPerPixel ) {
- case 8:
- return 256;
- case 15:
- case 16:
- return 32768;
- default:
- return 64000;
- }
-}
-
-int vga_getxdim(void)
-{
- check_mi();
- return mi->XResolution;
-}
-
-int vga_getydim(void)
-{
- check_mi();
- return mi->YResolution;
-}
-
-unsigned long current_color = 255;
-
-void vga_setrgbcolor(int r,int g,int b)
-{
- DOSMesa->red = r;
- DOSMesa->green = g ;
- DOSMesa->blue = b ;
- current_color = SV_rgbColor(r,g,b);
-}
-
-void vga_setcolor(int index)
-{
- DOSMesa->index = index;
- current_color = index;
-}
-
-void vga_drawpixel(x,y)
-{
- SV_putPixel(x,y,current_color);
-}
-
-/* TODO: */
-int vga_getpixel(x,y)
-{
-/* return (int)SV_getPixel(x,y); */
- fprintf(stderr,"vga_getpixel: Not implemented yet\n");
- return 1;
-}
-
-/* End of UNIVBE section */
-#endif
-
-/* Scitechs MegaGraphicsLibrary http://www.scitechsoft.com/ */
-
-#if defined(MGL)
-
-/* MGL support */
-struct MI {
- unsigned short BitsPerPixel;
- unsigned long XResolution;
- unsigned long YResolution;
-};
-
-struct MI*mi;
-
-static MGLDC*DC;
-static int activePage = 0;
-static int visualPage = 1;
-static int modeNumber = 0;
-
-void set_video_mode(unsigned short xres,unsigned short yres,char mode)
-{
- int i,driver = grDETECT,dmode = grDETECT;
- event_t evt;
-
- /* Start the MGL with only the SVGA 16m driver active */
- MGL_registerDriver(MGL_SVGA16NAME,SVGA16_driver);
- if (!MGL_init(&driver,&dmode,"..\\..\\"))
- MGL_fatalError(MGL_errorMsg(MGL_result()));
- if ((DC = MGL_createDisplayDC(false)) == NULL)
- MGL_fatalError(MGL_errorMsg(MGL_result()));
- MGL_makeCurrentDC(DC);
-}
-
-/*
- This is problematic as we don`t know what resolution the user program
- wants when we reach here. This is why the 256 colour and HiColour modes
- should be the same resolution, perhaps i`ll make this an environment
- variable
- */
-
-#define MGL_HICOLOUR_MODE 0
-
-
-void check_mi(void)
-{
- if(mi!=0) return;
-
- if(DC==NULL) {
-// DC = SV_init( TRUE );
- }
-
- if(modeNumber == 0 ) {
- modeNumber = MGL_HICOLOUR_MODE;
- }
-
-// SV_getModeInfo(modeNumber,mi);
-
- return;
-}
-
-void restore_video_mode(void)
-{
- MGL_exit();
-}
-
-void vga_clear(void)
-{
- MGL_clearDevice();
-}
-
-void vga_flip(void)
-{
- activePage = 1-activePage;
- visualPage = 1-activePage;
-
-// SV_setActivePage(activePage);
-
- /*
- Change false to true if you`re getting flickering
- even in double buffer mode, ( sets wait for Vertical retrace )
- */
-// SV_setVisualPage(visualPage,false);
-}
-
-int vga_getcolors(void)
-{
- check_mi();
- switch ( mi->BitsPerPixel ) {
- case 8:
- return 256;
- case 15:
- case 16:
- return 32768;
- default:
- return 64000;
- }
-}
-
-int vga_getxdim(void)
-{
- check_mi();
- return mi->XResolution;
-}
-
-int vga_getydim(void)
-{
- check_mi();
- return mi->YResolution;
-}
-
-unsigned long current_color = 255;
-
-void vga_setrgbcolor(int r,int g,int b)
-{
- DOSMesa->red = r;
- DOSMesa->green = g ;
- DOSMesa->blue = b ;
- current_color = MGL_rgbColor(DC,r,g,b);
-}
-
-void vga_setcolor(int index)
-{
- DOSMesa->index = index;
- current_color = index;
-}
-
-void vga_drawpixel(x,y)
-{
- MGL_pixelCoord(x,y);
-}
-
-/* TODO: */
-int vga_getpixel(x,y)
-{
-/* return (int)SV_getPixel(x,y); */
- fprintf(stderr,"vga_getpixel: Not implemented yet\n");
- return 1;
-}
-
-/* End of UNIVBE section */
-#endif
-
-#ifdef GLIDE
-
-/* GLIDE support */
-
-static GrHwConfiguration hwconfig;
-
-void set_video_mode(unsigned short x,unsigned short y,char mode)
-{
- grGlideInit();
- if( grSstQueryHardware( &hwconfig ) ) {
- grSstSelect( 0 ) ;
- if( !grSstOpen( GLIDE_MODE,
- GR_REFRESH_60Hz,
- GR_COLORFORMAT_ABGR,
- GR_ORIGIN_UPPER_LEFT,
- GR_SMOOTHING_ENABLE,
- 2 ) ) {
- fprintf(stderr,"Detected 3DFX board, but couldn`t initialize!");
- exit(1);
- }
-
- grBufferClear( 0, 0, GR_WDEPTHVALUE_FARTHEST);
-
- grDisableAllEffects();
- atexit( glideshutdown );
-
-// guColorCombineFunction( GR_COLORCOMBINE_ITRGB );
-// grTexCombineFunction( GR_TMU0, GR_TEXTURECOMBINE_ZERO);
- }
-}
-
-void restore_video_mode(void)
-{
-}
-
-static void glideshutdown( void )
-{
- grGlideShutdown() ;
-}
-
-void vga_clear(void)
-{
- grBufferSwap(0);
- grBufferClear( 0, 0, GR_WDEPTHVALUE_FARTHEST);
-}
-
-void vga_flip(void)
-{
-}
-
-int vga_getcolors(void)
-{
- return 32768;
-}
-
-int vga_getxdim(void)
-{
-#if GLIDE_MODE == GR_RESOLUTION_800x600
- return 800;
-#else
- return 640;
-#endif
-}
-
-int vga_getydim(void)
-{
-#if GLIDE_MODE == GR_RESOLUTION_800x600
- return 600;
-#else
- return 480;
-#endif
-}
-
-unsigned long current_color = 255;
-
-void vga_setrgbcolor(int r,int g,int b)
-{
- DOSMesa->red = r;
- DOSMesa->green = g ;
- DOSMesa->blue = b ;
-}
-
-void vga_setcolor(int index)
-{
- DOSMesa->index = index;
-}
-
-void vga_drawpixel(x,y)
-{
-
- gr_vtx.x = x;
- gr_vtx.y = y;
- gr_vtx.z = 0;
- gr_vtx.r = DOSMesa->red;
- gr_vtx.g = DOSMesa->green;
- gr_vtx.b = DOSMesa->blue;
-
- grDrawPoint( &gr_vtx );
-}
-
-static void fast_tri(GLcontext *ctx,GLuint v0, GLuint v1, GLuint v2, GLuint pv )
-{
- struct vertex_buffer *VB = ctx->VB;
-
- gr_vtx.z = 0;
- gr_vtx1.z = 0;
- gr_vtx2.z = 0;
-
- if (VB->MonoColor) {
- gr_vtx.r = DOSMesa->red;
- gr_vtx.g = DOSMesa->green;
- gr_vtx.b = DOSMesa->blue;
- gr_vtx1.r = DOSMesa->red;
- gr_vtx1.g = DOSMesa->green;
- gr_vtx1.b = DOSMesa->blue;
- gr_vtx2.r = DOSMesa->red;
- gr_vtx2.g = DOSMesa->green;
- gr_vtx2.b = DOSMesa->blue;
- } else {
- if(ctx->Light.ShadeModel == GL_SMOOTH ) {
- gr_vtx.r = FixedToInt( VB->Color[v0][0] );
- gr_vtx.g = FixedToInt( VB->Color[v0][1] );
- gr_vtx.b = FixedToInt( VB->Color[v0][2] );
-
- gr_vtx1.r = FixedToInt( VB->Color[v1][0] );
- gr_vtx1.g = FixedToInt( VB->Color[v1][1] );
- gr_vtx1.b = FixedToInt( VB->Color[v1][2] );
-
- gr_vtx2.r = FixedToInt( VB->Color[v2][0] );
- gr_vtx2.g = FixedToInt( VB->Color[v2][1] );
- gr_vtx2.b = FixedToInt( VB->Color[v2][2] );
- } else {
- gr_vtx.r = VB->Color[pv][0];
- gr_vtx.g = VB->Color[pv][1];
- gr_vtx.b = VB->Color[pv][2];
-
- gr_vtx1.r = VB->Color[pv][0];
- gr_vtx1.g = VB->Color[pv][1];
- gr_vtx1.b = VB->Color[pv][2];
-
- gr_vtx2.r = VB->Color[pv][0];
- gr_vtx2.g = VB->Color[pv][1];
- gr_vtx2.b = VB->Color[pv][2];
- }
- }
-
- gr_vtx.x = (VB->Win[v0][0] );
- gr_vtx.y = FLIP( (VB->Win[v0][1] ) );
- gr_vtx1.x = (VB->Win[v1][0] );
- gr_vtx1.y = FLIP( (VB->Win[v1][1] ) );
- gr_vtx2.x = (VB->Win[v2][0] );
- gr_vtx2.y = FLIP( (VB->Win[v2][1] ) );
-
- if(gr_vtx.x <0 || gr_vtx.x > 639 )
- return;
- if(gr_vtx1.x <0 || gr_vtx1.x > 639 )
- return;
- if(gr_vtx2.x <0 || gr_vtx2.x > 639 )
- return;
-
- if(gr_vtx.y <0 || gr_vtx.y > 479 )
- return;
- if(gr_vtx1.y <0 || gr_vtx1.y > 479 )
- return;
- if(gr_vtx2.y <0 || gr_vtx2.y > 479 )
- return;
-
- grDrawTriangle( &gr_vtx,&gr_vtx1,&gr_vtx2);
-}
-
-void fast_plot(GLcontext *ctx,GLuint first,GLuint last )
-{
- struct vertex_buffer *VB = ctx->VB;
- register GLuint i;
-
- if(VB->MonoColor) {
- /* all same color */
-
- gr_vtx.r = DOSMesa->red;
- gr_vtx.g = DOSMesa->green;
- gr_vtx.b = DOSMesa->blue;
-
- for(i=first;i<last;i++) {
- if(VB->ClipMask[i]==0) {
- gr_vtx.x = VB->Win[i][0];
- gr_vtx.y = FLIP(VB->Win[i][1]);
- }
- }
- }
-}
-
-/* TODO: */
-int vga_getpixel(x,y)
-{
-/* return (int)SV_getPixel(x,y); */
- fprintf(stderr,"vga_getpixel: Not implemented yet\n");
- return 1;
-}
-
-/* End of GLIDE section */
-
-#endif // GLIDE
-/**********************************************************************/
-/***** Miscellaneous functions *****/
-/**********************************************************************/
-
-
-static void get_buffer_size( GLcontext *ctx, GLuint *width, GLuint *height )
-{
- *width = DOSMesa->width = vga_getxdim();
- *height = DOSMesa->height = vga_getydim();
-}
-
-
-/* Set current color index */
-static void set_index( GLcontext *ctx, GLuint index )
-{
- DOSMesa->index = index;
- /*vga_setcolor( index );*/
-}
-
-
-/* Set current drawing color */
-static void set_color( GLcontext *ctx,
- GLubyte red, GLubyte green,
- GLubyte blue, GLubyte alpha )
-{
- DOSMesa->red = red;
- DOSMesa->green = green;
- DOSMesa->blue = blue;
- vga_setrgbcolor( red, green, blue );
-}
-
-
-static void clear_index( GLcontext *ctx, GLuint index )
-{
- /* TODO: Implements glClearIndex() */
-}
-
-
-static void clear_color( GLcontext *ctx,
- GLubyte red, GLubyte green,
- GLubyte blue, GLubyte alpha )
-{
- /* TODO: Implements glClearColor() */
-}
-
-
-static void clear( GLcontext *ctx,
- GLboolean all,
- GLint x, GLint y, GLint width, GLint height )
-{
- vga_clear();
-}
-
-
-static GLboolean set_buffer( GLcontext *ctx,
- GLenum mode )
-{
- /* TODO: implement double buffering and use this function to select */
- /* between front and back buffers. */
- if (buffer == GL_FRONT_LEFT)
- return GL_TRUE;
- else if (buffer == GL_BACK_LEFT)
- return GL_TRUE;
- else
- return GL_FALSE;
-}
-
-
-
-
-/**********************************************************************/
-/***** Write spans of pixels *****/
-/**********************************************************************/
-
-
-static void write_index_span( GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- const GLuint index[],
- const GLubyte mask[] )
-{
- int i;
- y = FLIP(y);
-#ifdef UNIVBE
- SV_beginPixel();
-#endif
- for (i=0;i<n;i++,x++) {
- if (mask[i]) {
-#ifdef UNIVBE
- SV_putPixelFast(x,y,current_color);
-#else
- vga_setcolor( index[i] );
- vga_drawpixel( x, y );
-#endif
- }
- }
-
-#ifdef UNIVBE
- SV_endPixel();
-#endif
-
-}
-
-
-
-static void write_monoindex_span( GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- const GLubyte mask[] )
-{
- int i;
- y = FLIP(y);
- /* use current color index */
- vga_setcolor( DOSMesa->index );
-#ifdef UNIVBE
- SV_beginPixel();
-#endif
- for (i=0;i<n;i++,x++) {
- if (mask[i]) {
-#ifdef UNIVBE
- SV_putPixelFast(x,y,current_color);
-#else
- vga_drawpixel( x, y );
-#endif
- }
- }
-#ifdef UNIVBE
- SV_endPixel();
-#endif
-}
-
-
-
-static void write_color_span( GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- const GLubyte red[], const GLubyte green[],
- const GLubyte blue[], const GLubyte alpha[],
- const GLubyte mask[] )
-{
- int i;
- y=FLIP(y);
-#ifdef UNIVBE
- SV_beginPixel();
-#endif
- if (mask) {
- /* draw some pixels */
- for (i=0; i<n; i++, x++) {
- if (mask[i]) {
-#ifdef UNIVBE
- SV_putPixelFast(x,y,SV_rgbColor(red[i], green[i], blue[i]) );
-#else
- vga_setrgbcolor( red[i], green[i], blue[i] );
- vga_drawpixel( x, y );
-#endif
- }
- }
- }
- else {
- /* draw all pixels */
- for (i=0; i<n; i++, x++) {
-#ifdef UNIVBE
- SV_putPixelFast(x,y,SV_rgbColor(red[i], green[i], blue[i]) );
-#else
- vga_setrgbcolor( red[i], green[i], blue[i] );
- vga_drawpixel( x, y );
-#endif
- }
- }
-#ifdef UNIVBE
- SV_endPixel();
-#endif
-}
-
-
-
-static void write_monocolor_span( GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- const GLubyte mask[])
-{
- int i;
- y=FLIP(y);
-#ifdef UNIVBE
- SV_beginPixel();
-#endif
- /* use current rgb color */
- vga_setrgbcolor( DOSMesa->red, DOSMesa->green, DOSMesa->blue );
- for (i=0; i<n; i++, x++) {
- if (mask[i]) {
-#ifdef UNIVBE
- SV_putPixelFast(x,y,current_color);
-#else
- vga_drawpixel( x, y );
-#endif
- }
- }
-#ifdef UNIVBE
- SV_endPixel();
-#endif
-}
-
-
-
-/**********************************************************************/
-/***** Read spans of pixels *****/
-/**********************************************************************/
-
-
-static void read_index_span( GLcontext *ctx,
- GLuint n, GLint x, GLint y, GLuint index[])
-{
- int i;
- y = FLIP(y);
- for (i=0; i<n; i++,x++) {
- index[i] = vga_getpixel( x, y );
- }
-}
-
-
-
-static void read_color_span( GLcontext *ctx,
- GLuint n, GLint x, GLint y,
- GLubyte red[], GLubyte green[],
- GLubyte blue[], GLubyte alpha[] )
-{
- int i;
- for (i=0; i<n; i++, x++) {
- /* TODO */
- }
-}
-
-
-
-/**********************************************************************/
-/***** Write arrays of pixels *****/
-/**********************************************************************/
-
-
-static void write_index_pixels( GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLuint index[], const GLubyte mask[] )
-{
- int i;
-#ifdef UNIVBE
- SV_beginPixel();
-#endif
- for (i=0; i<n; i++) {
- if (mask[i]) {
-#ifdef UNIVBE
- SV_putPixelFast(x[i], FLIP(y[i]), index[i] );
-#else
- vga_setcolor( index[i] );
- vga_drawpixel( x[i], FLIP(y[i]) );
-#endif
- }
- }
-#ifdef UNIVBE
- SV_endPixel();
-#endif
-}
-
-
-
-static void write_monoindex_pixels( GLcontext *ctx,
- GLuint n,
- const GLint x[], const GLint y[],
- const GLubyte mask[] )
-{
- int i;
- /* use current color index */
- vga_setcolor( DOSMesa->index );
-#ifdef UNIVBE
- SV_beginPixel();
-#endif
- for (i=0; i<n; i++) {
- if (mask[i]) {
-#ifdef UNIVBE
- SV_putPixelFast(x[i], FLIP(y[i]), DOSMesa->index);
-#else
- vga_drawpixel( x[i], FLIP(y[i]) );
-#endif
- }
- }
-#ifdef UNIVBE
- SV_endPixel();
-#endif
-}
-
-
-
-static void write_color_pixels( GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- const GLubyte r[], const GLubyte g[],
- const GLubyte b[], const GLubyte a[],
- const GLubyte mask[] )
-{
- int i;
-#ifdef UNIVBE
- SV_beginPixel();
-#endif
- for (i=0; i<n; i++) {
- if (mask[i]) {
-#ifdef UNIVBE
- SV_putPixelFast(x[i], FLIP(y[i]), SV_rgbColor(r[i], g[i], b[i]) );
-#else
- vga_setrgbcolor( r[i], g[i], b[i] );
- vga_drawpixel( x[i], FLIP(y[i]) );
-#endif
- }
- }
-#ifdef UNIVBE
- SV_endPixel();
-#endif
-}
-
-static void write_monocolor_pixels( GLcontext *ctx,
- GLuint n,
- const GLint x[], const GLint y[],
- const GLubyte mask[] )
-{
- int i;
- /* use current rgb color */
- vga_setrgbcolor( DOSMesa->red, DOSMesa->green, DOSMesa->blue );
-#ifdef UNIVBE
- SV_beginPixel();
-#endif
- for (i=0; i<n; i++) {
- if (mask[i]) {
-#ifdef UNIVBE
- SV_putPixelFast(x[i], FLIP(y[i]), current_color );
-#else
- vga_drawpixel( x[i], FLIP(y[i]) );
-#endif
- }
- }
-#ifdef UNIVBE
- SV_endPixel();
-#endif
-}
-
-/**********************************************************************/
-/***** Read arrays of pixels *****/
-/**********************************************************************/
-
-/* Read an array of color index pixels. */
-static void read_index_pixels( GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLuint index[], const GLubyte mask[] )
-{
- int i;
- for (i=0; i<n; i++) {
- index[i] = vga_getpixel( x[i], FLIP(y[i]) );
- }
-}
-
-
-
-static void read_color_pixels( GLcontext *ctx,
- GLuint n, const GLint x[], const GLint y[],
- GLubyte red[], GLubyte green[],
- GLubyte blue[], GLubyte alpha[],
- const GLubyte mask[] )
-{
- /* TODO */
-}
-
-static void DOSmesa_setup_DD_pointers( GLcontext *ctx )
-{
- /* Initialize all the pointers in the DD struct. Do this whenever */
- /* a new context is made current or we change buffers via set_buffer! */
-
- ctx->Driver.UpdateState = DOSmesa_setup_DD_pointers;
-
- ctx->Driver.ClearIndex = clear_index;
- ctx->Driver.ClearColor = clear_color;
- ctx->Driver.Clear = clear;
-
- ctx->Driver.Index = set_index;
- ctx->Driver.Color = set_color;
-
- ctx->Driver.SetBuffer = set_buffer;
- ctx->Driver.GetBufferSize = get_buffer_size;
-
- ctx->Driver.PointsFunc = choose_points_function();
- ctx->Driver.LineFunc = choose_line_function();
- ctx->Driver.TriangleFunc = choose_triangle_function();
-
-
- /* Pixel/span writing functions: */
- /* TODO: use different funcs for 8, 16, 32-bit depths */
- ctx->Driver.WriteColorSpan = write_color_span;
- ctx->Driver.WriteMonocolorSpan = write_monocolor_span;
- ctx->Driver.WriteColorPixels = write_color_pixels;
- ctx->Driver.WriteMonocolorPixels = write_monocolor_pixels;
- ctx->Driver.WriteIndexSpan = write_index_span;
- ctx->Driver.WriteMonoindexSpan = write_monoindex_span;
- ctx->Driver.WriteIndexPixels = write_index_pixels;
- ctx->Driver.WriteMonoindexPixels = write_monoindex_pixels;
-
- /* Pixel/span reading functions: */
- /* TODO: use different funcs for 8, 16, 32-bit depths */
- ctx->Driver.ReadIndexSpan = read_index_span;
- ctx->Driver.ReadColorSpan = read_color_span;
- ctx->Driver.ReadIndexPixels = read_index_pixels;
- ctx->Driver.ReadColorPixels = read_color_pixels;
-}
-
-/*
- * Create a new VGA/Mesa context and return a handle to it.
- */
-DOSMesaContext DOSMesaCreateContext( void )
-{
- DOSMesaContext ctx;
- GLboolean rgb_flag;
- GLfloat redscale, greenscale, bluescale, alphascale;
- GLboolean db_flag = GL_FALSE;
- GLboolean alpha_flag = GL_FALSE;
- int colors;
- GLint index_bits;
- GLint redbits, greenbits, bluebits, alphabits;
-
-#if !defined(UNIVBE) && !defined(GLIDE) && !defined(MGL)
- video_buffer = (unsigned char *) malloc( vga_getxdim() * vga_getydim() );
-
- memset(video_buffer,0, vga_getxdim() * vga_getydim() );
-
- memset(rgbtable,0,sizeof( rgbtable ) );
-#endif
-
-#if defined( DJGPP ) && !defined(UNIVBE) && !defined(GLIDE)
- dos_seg = _go32_conventional_mem_selector();
-#endif
-
- /* determine if we're in RGB or color index mode */
- colors = vga_getcolors();
- if (colors==32768) {
- rgb_flag = GL_TRUE;
- redscale = greenscale = bluescale = alphascale = 255.0;
- redbits = greenbits = bluebits = 8;
- alphabits = 0;
- index_bits = 0;
- }
- else if (colors==256) {
- rgb_flag = GL_FALSE;
- redscale = greenscale = bluescale = alphascale = 0.0;
- redbits = greenbits = bluebits = alphabits = 0;
- index_bits = 8;
- }
- else {
- restore_video_mode();
- fprintf(stderr,"[%d] >16 bit color not implemented yet!\n",colors);
- return NULL;
- }
-
- ctx = (DOSMesaContext) calloc( 1, sizeof(struct DOSmesa_context) );
- if (!ctx) {
- return NULL;
- }
-
- ctx->gl_vis = _mesa_create_visual( rgb_flag,
- db_flag,
- GL_FALSE, /* stereo */
- redbits,
- greenbits,
- bluebits,
- alphabits,
- index_bits,
- 16, /* depth_size */
- 8, /* stencil_size */
- 16, 16, 16, 16, /* accum_size */
- 1 ); -
- ctx->gl_ctx = _mesa_create_context( ctx->gl_vis,
- NULL, /* share list context */
- (void *) ctx
- );
-
- ctx->gl_buffer = _mesa_create_framebuffer( ctx->gl_vis );
-
- ctx->index = 1;
- ctx->red = ctx->green = ctx->blue = 255;
-
- ctx->width = ctx->height = 0; /* temporary until first "make-current" */
-
- return ctx;
-}
-
-/*
- * Destroy the given VGA/Mesa context.
- */
-void DOSMesaDestroyContext( DOSMesaContext ctx )
-{
- if (ctx) {
- _mesa_destroy_visual( ctx->gl_vis );
- _mesa_destroy_context( ctx->gl_ctx );
- _mesa_destroy_framebuffer( ctx->gl_buffer );
- free( ctx );
- if (ctx==DOSMesa) {
- DOSMesa = NULL;
- }
- }
-}
-
-
-
-/*
- * Make the specified VGA/Mesa context the current one.
- */
-void DOSMesaMakeCurrent( DOSMesaContext ctx )
-{
- DOSMesa = ctx;
- _mesa_make_current( ctx->gl_ctx, ctx->gl_buffer );
- DOSmesa_setup_DD_pointers( ctx->gl_ctx );
-
- if (ctx->width==0 || ctx->height==0) {
- /* setup initial viewport */
- ctx->width = vga_getxdim();
- ctx->height = vga_getydim();
- _mesa_set_viewport( ctx->gl_ctx, 0, 0, ctx->width, ctx->height );
- }
-}
-
-
-
-/*
- * Return a handle to the current VGA/Mesa context.
- */
-DOSMesaContext DOSMesaGetCurrentContext( void )
-{
- return DOSMesa;
-}
-
-
-/*
- * Swap front/back buffers for current context if double buffered.
- */
-void DOSMesaSwapBuffers( void )
-{
-#if !defined(UNIVBE)
-/* Assume double buffering is available if in UNIVBE,
- if it isn`t its taken care of anyway */
-// if (DOSMesa->gl_vis->DBflag)
-#endif
- {
- vga_flip();
- }
-}
-
-
-#else
-
-/*
- * Need this to provide at least one external definition when DOS is
- * not defined on the compiler command line.
- */
-
-int gl_DOS_dummy_function(void)
-{
- return 0;
-}
-
-#endif /*DOS*/
-
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