X-Git-Url: http://4ch.mooo.com/gitweb/?a=blobdiff_plain;f=16%2Fdos_gfx.cpp;h=e14c5c4930e5c436bf1c2d402f2ad5cda22d8cd0;hb=0fd6f3d210d87e6b1eb1924bb16f945f1d1bf42e;hp=79de22fadae6289bdb430f16558e70cb0e06da43;hpb=7d175b11552ccc85edd0f999e003b99846d4a3a8;p=16.git diff --git a/16/dos_gfx.cpp b/16/dos_gfx.cpp index 79de22fa..e14c5c49 100644 --- a/16/dos_gfx.cpp +++ b/16/dos_gfx.cpp @@ -1,63 +1,7 @@ -/* - * LIB.C v1.2a - * - * by Robert Schmidt - * (C)1993 Ztiff Zox Softwear - * - * Simple graphics library to accompany the article - * - * INTRODUCTION TO MODE X. - * - * This library provides the basic functions for initializing and using - * unchained (planar) 256-color VGA modes. Currently supported are: - * - * - 320x200 - * - 320x240 - * - * Functions are provided for: - * - * - initializing one of the available modes - * - setting the start address of the VGA refresh data - * - setting active and visible display pages - * - writing and reading a single pixel to/from video memory - * - * The library is provided as a demonstration only, and is not claimed - * to be particularly efficient or suited for any purpose. It has only - * been tested with Borland C++ 3.1 by the author. Comments on success - * or disaster with other compilers are welcome. - * - * This file is public domain. Do with it whatever you'd like, but - * please don't distribute it without the article. - * - * Thanks go out to various helpful netters who spotted the 0xE7 bug - * in the set320x240x256() function! - * - * Modified by sparky4 so it can be compiled in open watcom ^^ - */ - - - - -/* - * We 'require' a large data model simply to get rid of explicit 'far' - * pointers and compiler specific '_fmemset()' functions and the likes. - */ -#if !defined(__COMPACT__) -# if !defined(__LARGE__) -# if !defined(__HUGE__) -# error Large data model required! Try compiling with 'wcc -0 -ml lib.c'. -# endif -# endif -#endif - -#include -#include -#include - -//code from old library! +//DOS Graphics thingy by sparky4 licence GPL v2 +//a special thanks to everyone to release source code for mode X /*src\lib\*/ #include "dos_gfx.h" -#include "lib\x\modex.h" int old_mode; //color ‚Ä‚·‚Æ @@ -65,8 +9,10 @@ int gq = LGQ; //‚Ä‚·‚Æ int q = 0; int bakax = 0, bakay = 0; -int xx = rand()&0%320, yy = rand()&0%240, sx = 0, sy = 0; -byte coor; +cord xx = rand()&0%320, yy = rand()&0%240, sx = 0, sy = 0; +byte coor; + +byte *vga = (byte *) MK_FP(0xA000, 0); /* * Comment out the following #define if you don't want the testing main() @@ -74,421 +20,6 @@ byte coor; */ #define TESTING -/* - * Define the port addresses of some VGA registers. - */ -#define CRTC_ADDR 0x3d4 /* Base port of the CRT Controller (color) */ - -#define SEQU_ADDR 0x3c4 /* Base port of the Sequencer */ -#define GRAC_ADDR 0x3ce /* Base port of the Graphics Controller */ - - -/* - * Make a far pointer to the VGA graphics buffer segment. Your compiler - * might not have the MK_FP macro, but you'll figure something out. - */ -byte *vga = (byte *) MK_FP(0xA000, 0); - -//fontAddr = getFont(); - -/* - * width and height should specify the mode dimensions. widthBytes - * specify the width of a line in addressable bytes. - */ -unsigned width, height, widthBytes; - -/* - * actStart specifies the start of the page being accessed by - * drawing operations. visStart specifies the contents of the Screen - * Start register, i.e. the start of the visible page. - */ -unsigned actStart, visStart; - -/* - * set320x200x256_X() - * sets mode 13h, then turns it into an unchained (planar), 4-page - * 320x200x256 mode. - */ -void set320x200x256_X(void) - { - union REGS r; - - /* Set VGA BIOS mode 13h: */ - r.x.ax = 0x0013; - int86(0x10, &r, &r); - - /* Turn off the Chain-4 bit (bit 3 at index 4, port 0x3c4): */ - outpw(SEQU_ADDR, 0x0604); - - /* Turn off word mode, by setting the Mode Control register - of the CRT Controller (index 0x17, port 0x3d4): */ - outpw(CRTC_ADDR, 0xE317); - - /* Turn off doubleword mode, by setting the Underline Location - register (index 0x14, port 0x3d4): */ - outpw(CRTC_ADDR, 0x0014); - - /* Clear entire video memory, by selecting all four planes, then - writing 0 to entire segment. */ - outpw(SEQU_ADDR, 0x0F02); - memset(vga+1, 0, 0xffff); /* stupid size_t exactly 1 too small */ - vga[0] = 0; - - /* Update the global variables to reflect dimensions of this - mode. This is needed by most future drawing operations. */ - width = 320; - height = 200; - - /* Each byte addresses four pixels, so the width of a scan line - in *bytes* is one fourth of the number of pixels on a line. */ - widthBytes = width / 4; - - /* By default we want screen refreshing and drawing operations - to be based at offset 0 in the video segment. */ - actStart = visStart = 0; - - /* --------------------- -HORIZONTAL SCROLLING --------------------- -Horizontal scrolling is essentially the same as vertical scrolling, all -you do is increment or decrement the VGA offset register by 1 instead of -80 as with vertical scrolling. - -However, horizontal scrolling is complicated by two things - - 1. Incrementing the offset register by one actually scrolls by FOUR - pixels (and there are FOUR planes on the VGA, what a coincidence) - - 2. You can't draw the image off the screen and then scroll it on - because of the way the VGA wraps to the next row every 80 bytes - (80 bytes * 4 planes = 320 pixels), if you tried it, you would - actually be drawing to the other side of the screen (which is - entirely visible) - -I'll solve these problems one at a time. - -Firstly, to get the VGA to scroll by only one pixel you use the horizontal -pixel panning (HPP) register. This register resides at - - PORT: 3C0H - INDEX: 13h - -and in real life, you use it like this - ------------------ Pixel Panning --------------- -IN PORT 3DAH (this clears an internal - flip-flop of the VGA) -OUT 13H TO PORT 3C0H -OUT value TO PORT 3C0H (where "value" is the - number of pixels to offset) ------------------------------------------------ -*/ -// -// inp(0x3DA); -// outp(0x3C0, 0x13); - - } - -/* - * setActiveStart() tells our graphics operations which address in video - * memory should be considered the top left corner. - */ -void setActiveStart(unsigned offset) - { - actStart = offset; - } - -/* - * setVisibleStart() tells the VGA from which byte to fetch the first - * pixel when starting refresh at the top of the screen. This version - * won't look very well in time critical situations (games for - * instance) as the register outputs are not synchronized with the - * screen refresh. This refresh might start when the high byte is - * set, but before the low byte is set, which produces a bad flicker. - */ -void setVisibleStart(unsigned offset) - { - visStart = offset; - outpw(CRTC_ADDR, 0x0C); /* set high byte */ - outpw(CRTC_ADDR+1, visStart >> 8); - outpw(CRTC_ADDR, 0x0D); /* set low byte */ - outpw(CRTC_ADDR+1, visStart & 0xff); - } - -/* - * setXXXPage() sets the specified page by multiplying the page number - * with the size of one page at the current resolution, then handing the - * resulting offset value over to the corresponding setXXXStart() - * function. The first page is number 0. - */ -void setActivePage(int page) - { - setActiveStart(page * widthBytes * height); - } - -void setVisiblePage(int page) - { - setVisibleStart(page * widthBytes * height); - } - -void putPixel_X(int x, int y, byte color) - { - /* Each address accesses four neighboring pixels, so set - Write Plane Enable according to which pixel we want - to modify. The plane is determined by the two least - significant bits of the x-coordinate: */ - outp(0x3c4, 0x02); - outp(0x3c5, 0x01 << (x & 3)); - - /* The offset of the pixel into the video segment is - offset = (width * y + x) / 4, and write the given - color to the plane we selected above. Heed the active - page start selection. */ - vga[(unsigned)(widthBytes * y) + (x / 4) + actStart] = color; - - } - -byte getPixel_X(int x, int y) - { - /* Select the plane from which we must read the pixel color: */ - outpw(GRAC_ADDR, 0x04); - outpw(GRAC_ADDR+1, x & 3); - - return vga[(unsigned)(widthBytes * y) + (x / 4) + actStart]; - - } - -void set320x240x256_X(void) - { - /* Set the unchained version of mode 13h: */ - set320x200x256_X(); - - /* Modify the vertical sync polarity bits in the Misc. Output - Register to achieve square aspect ratio: */ - outp(0x3C2, 0xE3); - - /* Modify the vertical timing registers to reflect the increased - vertical resolution, and to center the image as good as - possible: */ - outpw(0x3D4, 0x2C11); /* turn off write protect */ - outpw(0x3D4, 0x0D06); /* vertical total */ - outpw(0x3D4, 0x3E07); /* overflow register */ - outpw(0x3D4, 0xEA10); /* vertical retrace start */ - outpw(0x3D4, 0xAC11); /* vertical retrace end AND wr.prot */ - outpw(0x3D4, 0xDF12); /* vertical display enable end */ - outpw(0x3D4, 0xE715); /* start vertical blanking */ - outpw(0x3D4, 0x0616); /* end vertical blanking */ - - /* Update mode info, so future operations are aware of the - resolution */ - height = 240; - - } - - -/*-----------XXXX-------------*/ -/*tile*/ -//king_crimson's code -void putColorBox_X(int x, int y, int w, int h, byte color) { - outp(0x3c4, 0x02); - - int curx, cury; - unsigned drawptr; - for (curx=x; curx<(x+w); curx++) { - outp(0x3c5, 0x01 << (curx & 3)); - drawptr = (unsigned)(widthBytes * y) + (curx / 4) + actStart; - for (cury=0; cury0) - boingy=1; - - for(int ti=0;ti> 2*/); - //setVisibleStart(visStart + (Cols * height)); - setVisibleStart(visStart + (Cols * width)); -} - -/*To implement smooth horizontal scrolling, you would do the following: --------------- Horizontal Scrolling ------------ -FOR X = 0 TO 319 DO - SET HPP TO ( X MOD 4 ) - SET VGA OFFSET TO ( X/4 ) -END FOR ------------------------------------------------- - -Okay, no problem at all (although I think you might have to fiddle -around with the HPP a bit to get it right...try different values and -see what works :). - -So, the next problem is with drawing the images off the screen where -they aren't visible and then scrolling them on!!! As it turns out, -there's yet ANOTHER register to accomplish this. This one's called the -offset register (no, not the one I was talking about before, that one -was actually the "start address" register) and it's at - - PORT: 3D4H/3D5H - OFFSET: 13H - -and here's how to use it - --------------- Offset Register --------------- -OUT 13H TO PORT 3D4H -OUT value TO PORT 3D5H ----------------------------------------------- - -Now, what my VGA reference says is that this register holds the number -of bytes (not pixels) difference between the start address of each row. -So, in X-mode it normally contains the value 80 (as we remember, -80 bytes * 4 planes = 320 pixels). This register does not affect the -VISIBLE width of the display, only the difference between addresses on -each row. - -When we scroll horizontally, we need a little bit of extra working space -so we can draw off the edge of the screen. - -Perhaps a little diagram will clarify it. The following picture is of a -standard X-mode addressing scheme with the OFFSET register set to 80. - - ROW OFFSET - 0 0 ======================== - 1 80 [ ] - 2 160 [ ] - .. .. [ VISIBLE ] - [ SCREEN ] - [ ] - [ ] - .. .. [ ] - 199 15920 ======================== - -and the next diagram is of a modified addressing scheme with the OFFSET -register set to 82 (to give us 4 extra pixels on each side of the screen) - -ROW OFFSET -0 0 ------========================------ -1 82 | V [ ] V | -2 164 | I [ ] I | -.. .. | N S [ VISIBLE ] N S | - | O I [ SCREEN ] O I | - | T B [ ] T B | - | L [ ] L | -.. .. | E [ ] E | -199 16318 ------========================------ - -Beautiful!!! - -As with vertical scrolling, however, you still have the problem of when -you reach the bottom of page 4...and it's fixed in the same manner. - -I haven't actually managed to get infinite horizontal scrolling working, -but the method I have just stated will give you a horizontal scrolling -range of over 200 screens!!!! So if you need more (which is extremely -unlikely), figure it out yourself. - - ------------------- -COMBINED SCROLLING ------------------- -To do both horizontal and vertical scrolling, all you have to do is combine -the two methods with a few little extras (it's always the way isn't it). - -You have to start off with the original screen on the current page and the -next page as well. When you scroll horizontally, you have to draw the edge -that's coming in to the screen to BOTH pages (that means you'll be drawing -the incoming edge twice, once for each page). You do this so that when you -have scrolled vertically down through a complete page, you can jump back -to the first page and it will (hopefully) have an identical copy, and you -can then continue scrolling again. - -I'm sorry about this being so confusing but it's a bit difficult to explain. - - -*/ -//--------------------------------------------------- -// -// Use the bios to get the address of the 8x8 font -// -// You need a font if you are going to draw text. -// -/* -int far * -getFont() -{ - union REGPACK rg; - int seg; - int off; - memset(&rg, 0, sizeof(rg)); - - rg.w.ax = 0x1130; - rg.h.bh = 0x03; - intr(0x10, &rg); - seg = rg.w.es; - off = rg.w.bp; - - - return (int far *)MK_FP(seg, off); -} - -void drawChar(int x, int y, int color, byte c) -{ - int i, j; - int mask; - int far *font = getFont() + (c * 8); - - for (i = 0; i < 8; i++) - { - mask = *font; - for (j = 0; j < 8; j++) - { - if (mask & 0x80) - { - //pixel(x + j, y + i, color); - putPixel_X(x + j, y + i, color); - } - mask <<= 1; - } - font++; - } -} - -void drawText(int x, int y, int color, byte string) -{ - while (string) - { - drawChar(x, y, color, string); - x += 8; - string++; - } -} -*/ ///////////////////////////////////////////////////////////////////////////// // // // setvideo() - This function Manages the video modes // @@ -499,6 +30,8 @@ void setvideo(/*byte mode, */int vq){ if(!vq){ // deinit the video // change to the video mode we were in before we switched to mode 13h + //mxSetMode( MX_TEXT ); + mxTerm(); in.h.ah = 0x00; in.h.al = old_mode; int86(0x10, &in, &out); @@ -510,7 +43,14 @@ void setvideo(/*byte mode, */int vq){ old_mode = out.h.al; // enter mode - set320x240x256_X(); + mxInit(); + mxSetMode( MX_320x240 ); +// mxSetVirtualScreen(SW+(SW/4), SH+(SH/4)); +// mxSetVirtualScreen(SW*2, SH*2); + mxSetVirtualScreen(VW,VH); +// mxSetVirtualScreen((640-(TILEWH*4)),(480-(TILEWH*4))); + mxSetClip(0); + //mxSetClipRegion(0, 0, SW, SH); } } @@ -521,7 +61,7 @@ void setvideo(/*byte mode, */int vq){ // // ///////////////////////////////////////////////////////////////////////////// void cls(byte color, byte *Where){ - _fmemset(Where, color, width*(height*17)); + _fmemset(Where, color, VW*(VH)); } //color ‚Ä‚·‚Æ @@ -545,18 +85,18 @@ int colorz(){ //slow spectrum down void ssd(int svq){ - if(sy < height+1){ - if(sx < width+1){ + if(sy < SH+1){ + if(sx < SW+1){ //plotpixel(xx, yy, coor, vga); //ppf(sx, sy, coor, vga); - putPixel_X(sx, sy, coor); + mxPutPixel(sx, sy, coor); //printf("%d %d %d %d\n", sx, sy, svq, coor); sx++; }else sx = 0; - if(sx == width){ + if(sx == SW){ sy++; if(svq == 7) coor++; - if(sy == height && svq == 8) coor = rand()%NUM_COLORS; + if(sy == SH && svq == 8) coor = rand()%NUM_COLORS; } }else sy = 0; } @@ -564,25 +104,13 @@ void ssd(int svq){ /*-----------ding-------------*/ int ding(int q){ -// if(yy0){ - xx++;//=TILEWH; + xx++; } if(!bakay){ - yy--;//=TILEWH; + yy--; }else if(bakay>0){ - yy++;//=TILEWH; + yy++; } }else{ if(!bakax){ -// xx-=TILEWH; - xx--; +// xx-=TILEWH; + xx--; }else if(bakax>1){ -// xx+=TILEWH; - xx++; +// xx+=TILEWH; + xx++; } if(!bakay){ -// yy-=TILEWH; - yy--; +// yy-=TILEWH; + yy--; }else if(bakay>1){ -// yy+=TILEWH; - yy++; +// yy+=TILEWH; + yy++; } } } // fixer -// if(q!=16){ -//if(q!=16) - if(xx<(0/*-TILEWH*/)) xx=(width/*+TILEWH*/); - if(yy<0) yy=(height*3); - if(xx>(width/*+TILEWH*/)) xx=(0/*-TILEWH*/); - if(yy>(height*3)) yy=0; -// } + if(q!=16){ + if(xx<0) xx=(VW/*-TILEWH*/); + if(yy<0) yy=(VH/*-TILEWH*/); + if(xx>(VW/*-TILEWH*/)) xx=0; + if(yy>(VH/*-TILEWH*/)) yy=0; + } //interesting effects if(q==16) @@ -685,30 +211,22 @@ int ding(int q){ int tx=0,ty=0; tx+=xx+16; ty+=yy+16; - putPixel_X(tx, ty, coor); - //drawrect(tx, ty, tx+TILEWH, ty+TILEWH, coor); + mxPutPixel(tx, ty, coor); //printf("%d %d %d %d %d %d\n", xx, yy, tx, ty, TILEWH); // plot the pixel -//---- ppf(xx, yy, coor, vga); - }else /*if(xx>=0 && xx=0 && yy<(height*3))*/{ -// putColorBox_X(xx, yy, TILEWH, TILEWH, coor); -//++++0000 - putPixel_X(xx, yy, coor); + }else{ +// mxFillBox(xx, yy, TILEWH, TILEWH, coor, 0); + mxPutPixel(xx, yy, coor); } -//---- if(q==2) ppf(rand()%, rand()%height, 0, vga); -// if(q==2) putColorBox_X(rand()%width, rand()%(height*3), TILEWH, TILEWH, 0); -//++++0000 - if(q==2) putPixel_X(rand()%width, rand()%(height*3), 0); - if(q==16) putPixel_X(rand()%width, rand()%(height*3), 0); + if(q==2) mxPutPixel(rand()%SW, rand()%(SH*3), 0); + if(q==16) mxPutPixel(rand()%SW, rand()%(SH*3), 0); if(q==2||q==4||q==16){ bakax = rand()%3; bakay = rand()%3; } gq++; -//if(xx<0||xx>320||yy<0||yy>(height*3)) +//if(xx<0||xx>320||yy<0||yy>(SH*3)) // printf("%d %d %d %d %d %d\n", xx, yy, coor, bakax, bakay, getPixel_X(xx,yy)); // printf("%d\n", getPixel_X(xx,yy)); -//0000 -// drawText(0, 0, 15, getPixel_X(xx,yy)); }else gq = LGQ; return gq; } @@ -718,88 +236,24 @@ int ding(int q){ * The library testing routines follows below. */ - #ifdef TESTING -#include -#include - -void doTest(void) - { - int p, x, y, pages; - - /* This is the way to calculate the number of pages available. */ - pages = 65536L/(widthBytes*height); // apparently this takes the A000 address - - printf("%d\n", pages); - - for (p = 0; p <= pages; ++p) - { - setActivePage(p); - - /* On each page draw a single colored border, and dump the palette - onto a small square about the middle of the page. */ - - //{ - for (x = 0; x <= width; ++x) - { - putPixel_X(x, 0, p+1); - if(p!=pages) putPixel_X(x, height-1, p+1); - else putPixel_X(x, 99-1, p+1); - } - - for (y = 0; y <= height; ++y) - { - putPixel_X(0, y, p+1); - if(p!=pages) putPixel_X(width-1, y, p+1); - else putPixel_X(width-1, y, p+1); - } - - for (x = 0; x < 16; ++x) - for (y = 0; y < 16; ++y) - putPixel_X(x+(p+2)*16, y+(p+2)*16, x + y*16); - //} - -// drawText(0, 0, 15, p); - - } - - /* Each pages will now contain a different image. Let the user cycle - through all the pages by pressing a key. */ - for (p = 0; p <= pages; ++p) - { - setVisiblePage(p); - //drawText(0, 240, 15, "bakapi"); - getch(); - } - - } - /* * Library test (program) entry point. */ int main(void) { - int key,d; + int key,d,xpos,ypos,xdir,ydir; + //short int temp; // main variables d=1; // switch variable key=4; // default screensaver number -// puts("First, have a look at the 320x200 mode. I will draw some rubbish"); -// puts("on all of the four pages, then let you cycle through them by"); -// puts("hitting a key on each page."); -// puts("Press a key when ready..."); -// getch(); - -// doTest(); - -// puts("Then, check out Mode X, 320x240 with 3 (and a half) pages."); -// puts("Press a key when ready..."); -// getch(); - -//++++0000 + xpos=0; + ypos=0; + xdir=1; + ydir=1; setvideo(1); -//mxInit(); // screen savers /*while(d!=0){ // on! @@ -816,23 +270,54 @@ int main(void) } }*/ // else off while(!kbhit()){ // conditions of screen saver - ding(4); + ding(key); } //end of screen savers -// doTest(); + //doTest(); + for (int x = 0; x < VW; ++x) + { + mxPutPixel(x, 0, 15); + mxPutPixel(x, SH-1, 15); + } + for (int y = 0; y < VH; ++y) + { + mxPutPixel(0, y, 15); + mxPutPixel(SW-1, y, 15); + } + + getch(); + for (int x = 320; x < VW; ++x) + { + mxPutPixel(x, 0, 15); + mxPutPixel(x, VH-1, 15); + } + for (int y = 240; y < VH; ++y) + { + mxPutPixel(0, y, 15); + mxPutPixel(VW-1, y, 15); + } getch(); - - while(!kbhit()){ // conditions of screen saver - hScroll(1); - scrolly(1); - delay(100); + while(!kbhit()){ +// hScroll(1); +// scrolly(1); +// vScroll(1); +// delay(100); + //for(int i=0;i(VW-SW-1)) || (xpos<1)){xdir=-xdir;} + if( (ypos>(VH-SH-1)) || (ypos<1)){ydir=-ydir;} // { Hit a boundry, change + // direction! } + //} } -//++++0000 setvideo(0); -//mxTerm(); -//mxGetVersion(); - puts("Where to next? It's your move! wwww"); - printf("bakapi ver. 1.04.09.03\nis made by sparky4i†ƒÖ…j feel free to use it ^^\nLicence: GPL v2\n"); + printf("wwww\nResolution: %dx%d\n", SW,SH); + printf("Mode X Library Version: %d\n", mxGetVersion()); + //puts("where to next? It's your move! wwww"); + printf("bakapi ver. 1.04.09.04\nis made by sparky4i†ƒÖ…j feel free to use it ^^\nLicence: GPL v2\n"); return 0; }