X-Git-Url: http://4ch.mooo.com/gitweb/?a=blobdiff_plain;f=16%2Fdos_gfx.cpp;h=360137edaa436ca905a306b68281dec220c0bee3;hb=de087a68310f656a0d2317065eedc49cea9280b3;hp=76ab683a93eba88210376c083c514c50a6e18522;hpb=3526f4364a2af89e5a7b651517c8f051e2419d0f;p=16.git diff --git a/16/dos_gfx.cpp b/16/dos_gfx.cpp index 76ab683a..360137ed 100644 --- a/16/dos_gfx.cpp +++ b/16/dos_gfx.cpp @@ -6,20 +6,20 @@ * * Simple graphics library to accompany the article * - * INTRODUCTION TO MODE X. + * 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 + * - 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 + * - 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 @@ -32,10 +32,12 @@ * 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 ^^ + * 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. @@ -43,7 +45,7 @@ #if !defined(__COMPACT__) # if !defined(__LARGE__) # if !defined(__HUGE__) -# error Large data model required! Try compiling with 'bcc -ml lib.c'. +# error Large data model required! Try compiling with 'wcc -0 -ml lib.c'. # endif # endif #endif @@ -55,6 +57,7 @@ //code from old library! /*src\lib\*/ #include "dos_gfx.h" +#include "lib\x\modex.h" int old_mode; //color ‚Ä‚·‚Æ @@ -74,10 +77,10 @@ byte coor; /* * Define the port addresses of some VGA registers. */ -#define CRTC_ADDR 0x3d4 /* Base port of the CRT Controller (color) */ +#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 */ +#define SEQU_ADDR 0x3c4 /* Base port of the Sequencer */ +#define GRAC_ADDR 0x3ce /* Base port of the Graphics Controller */ /* @@ -103,56 +106,98 @@ unsigned actStart, visStart; /* * set320x200x256_X() - * sets mode 13h, then turns it into an unchained (planar), 4-page - * 320x200x256 mode. + * 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; - } + { + 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) + outpw(0x3C0, 0x13); + outpw(0x3C0, 0x58); + + } /* * setActiveStart() tells our graphics operations which address in video * memory should be considered the top left corner. */ void setActiveStart(unsigned offset) - { - actStart = offset; - } + { + actStart = offset; + } /* * setVisibleStart() tells the VGA from which byte to fetch the first @@ -163,13 +208,13 @@ void setActiveStart(unsigned offset) * 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); - } + { + 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 @@ -178,299 +223,477 @@ void setVisibleStart(unsigned offset) * function. The first page is number 0. */ void setActivePage(int page) - { - setActiveStart(page * widthBytes * height); - } + { + setActiveStart(page * widthBytes * height); + } void setVisiblePage(int page) - { - setVisibleStart(page * widthBytes * height); - } + { + 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; + { + /* 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); + { + /* 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]; + 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; + { + /* 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*/ +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) + boing=1; + else break; + + for(int i=0;i0){ - yy++; - d3y--; + if((height*2)0){ - xx++; - } - }else{ - if(!bakax){ - xx--; - }else if(bakax>1){ - xx++; - } - if(!bakay){ - yy--; - }else if(bakay>1){ - yy++; - } } - // fixer - /*if(xx<0) xx=width; - if(yy<0) yy=height; - if(xx>width) xx=0; - if(yy>height) yy=0;*/ - - // plot the pixel -//---- ppf(xx, yy, coor, vga); - putPixel_X(xx, yy, coor); -//---- if(q==2) ppf(rand()%, rand()%height, 0, vga); - if(q==2) putPixel_X(rand()%width, rand()%height, 0); - if(q==2||q==4){ bakax = rand()%3; bakay = rand()%3; } - gq++; + + if(q == 8){ colorz(); return gq; }else + if(q == 10){ ssd(q); /*printf("%d\n", coor);*/ }else + if(q == 5){ colortest(); return gq; }else + if(q == 11){ colorz(); delay(100); return gq; } + if(q == 6){ + coor = rand()%NUM_COLORS; +//---- cls(coor, vaddr); + cls(coor, vga); + //updatevbuff(); + } + + if(q == 7 || q== 9){ + if(gq < HGQ){ + if(q == 7) ssd(q); + if(q == 9){ ssd(q); coor++; } + gq++; + }else gq = LGQ; + } + if((q<5 && gq0){ + yy++; + d3y--; + } + } + if(bakax<0){ + xx--; + }else + if(bakax>0){ + xx++; + } + }else{ + if(q==16) + { + if(!bakax){ + xx--;//=TILEWH; + }else if(bakax>0){ + xx++;//=TILEWH; + } + if(!bakay){ + yy--;//=TILEWH; + }else if(bakay>0){ + yy++;//=TILEWH; + } + }else{ + if(!bakax){ + xx-=TILEWH; + }else if(bakax>1){ + xx+=TILEWH; + } + if(!bakay){ + yy-=TILEWH; + }else if(bakay>1){ + yy+=TILEWH; + } + } + } + // fixer +// if(q!=16){ +//if(q!=16) + if(xx<0) xx=width; + if(yy<0) yy=(height*3); + if(xx>width) xx=0; + if(yy>(height*3)) yy=0; +// } + +//interesting effects + if(q==16) + { + int tx=0,ty=0; + tx+=xx+16; + ty+=yy+16; + putPixel_X(tx, ty, coor); + //drawrect(tx, ty, tx+TILEWH, ty+TILEWH, 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); + } + +//---- if(q==2) ppf(rand()%, rand()%height, 0, vga); + if(q==2) putColorBox_X(rand()%width, rand()%(height*3), TILEWH, TILEWH, 0); + if(q==16) putPixel_X(rand()%width, rand()%(height*3), 0); + if(q==2||q==4||q==16){ bakax = rand()%3; bakay = rand()%3; } + gq++; //if(xx<0||xx>320||yy<0||yy>240) -// printf("%d %d %d %d %d %d\n", xx, yy, coor, bakax, bakay, getPixel_X(xx,yy)); -// printf("%d\n", getPixel_X(xx,yy)); +// 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; +// drawText(0, 0, 15, getPixel_X(xx,yy)); + }else gq = LGQ; + return gq; } @@ -485,103 +708,112 @@ int ding(int q){ #include void doTest(void) - { - int p, x, y, pages; + { + 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 + /* 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); + printf("%d\n", pages); - /* 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) + for (p = 0; p <= pages; ++p) { - putPixel_X(x, 0, p+1); - if(p!=pages) putPixel_X(x, height-1, p+1); - else putPixel_X(x, 99-1, p+1); + 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); + } - for (y = 0; y <= height; ++y) + /* 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) { - putPixel_X(0, y, p+1); - if(p!=pages) putPixel_X(width-1, y, p+1); - else putPixel_X(width-1, y, p+1); + setVisiblePage(p); + //drawText(0, 240, 15, "bakapi"); + getch(); } - 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; - // 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(); - - setvideo(1); + { + int key,d; + // 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 + setvideo(1); +//mxInit(); // screen savers /*while(d!=0){ // on! - if(!kbhit()){ // conditions of screen saver - ding(key); - }else{ - setvideo(0); - // user imput switch - printf("Enter 1, 2, 3, 4, or 6 to run a screensaver, or enter 5 to quit.\n", getch()); // prompt the user - scanf("%d", &key); - //if(key==3){xx=yy=0;} // crazy screen saver wwww - if(key==5) d=0; - setvideo(1); + if(!kbhit()){ // conditions of screen saver + ding(key); + }else{ + setvideo(0); + // user imput switch + printf("Enter 1, 2, 3, 4, or 6 to run a screensaver, or enter 5 to quit.\n", getch()); // prompt the user + scanf("%d", &key); + //if(key==3){xx=yy=0;} // crazy screen saver wwww + if(key==5) d=0; + setvideo(1); + } + }*/ // else off + while(!kbhit()){ // conditions of screen saver + ding(4); + } + //end of screen savers + doTest(); + + while(!kbhit()){ // conditions of screen saver + vScroll(-1); + } +//++++0000 + setvideo(0); +//mxTerm(); +//mxGetVersion(); + puts("Where to next? It's your move! wwww"); + printf("bakapi ver. 1.04.09.02\nis made by sparky4i†ƒÖ…j feel free to use it ^^\nLicence: GPL v2\n"); + return 0; } - }*/ // else off - while(!kbhit()){ // conditions of screen saver - ding(4); - } - //end of screen savers - doTest(); - setvideo(0); - puts("Where to next? It's your move! wwww"); - printf("bakapi ver. 1.04.09a\nis made by sparky4i†ƒÖ…j feel free to use it ^^\nLicence: GPL v2\n"); - return 0; - } #endif