-#include <dos.h>\r
-#include <string.h>\r
-#include <mem.h>\r
-#include <conio.h>\r
-#include <stdio.h>\r
-#include <stdlib.h>\r
-#include "src\lib\modex16.h"\r
-\r
-\r
-byte far* VGA=(byte far*) 0xA0000000; /* this points to video memory. */\r
-\r
-static void fadePalette(sbyte fade, sbyte start, word iter, byte *palette);\r
-static byte tmppal[PAL_SIZE];\r
-\r
-static void\r
-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
-}\r
-\r
-\r
-/* -========================= Entry Points ==========================- */\r
-void\r
-modexEnter() {\r
- word i;\r
- dword far*ptr=(dword far*)VGA; /* used for faster screen clearing */\r
- word CRTParms[] = {\r
- 0x0d06, /* vertical total */\r
- 0x3e07, /* overflow (bit 8 of vertical counts) */\r
- 0x4109, /* cell height (2 to double-scan */\r
- 0xea10, /* v sync start */\r
- 0xac11, /* v sync end and protect cr0-cr7 */\r
- 0xdf12, /* vertical displayed */\r
- 0x0014, /* turn off dword mode */\r
- 0xe715, /* v blank start */\r
- 0x0616, /* v blank end */\r
- 0xe317 /* turn on byte mode */\r
- };\r
- int CRTParmCount = sizeof(CRTParms) / sizeof(CRTParms[0]);\r
-\r
- /* TODO save current video mode and palette */\r
- vgaSetMode(VGA_256_COLOR_MODE);\r
-\r
- /* disable chain4 mode */\r
- outpw(SC_INDEX, 0x0604);\r
-\r
- /* synchronous reset while setting Misc Output */\r
- outpw(SC_INDEX, 0x0100);\r
-\r
- /* select 25 MHz dot clock & 60 Hz scanning rate */\r
- outp(MISC_OUTPUT, 0xe3);\r
-\r
- /* undo reset (restart sequencer) */\r
- outpw(SC_INDEX, 0x0300);\r
-\r
- /* reprogram the CRT controller */\r
- outp(CRTC_INDEX, 0x11); /* VSync End reg contains register write prot */\r
- outp(CRTC_DATA, 0x7f); /* get current write protect on varios regs */\r
-\r
- /* send the CRTParms */\r
- for(i=0; i<CRTParmCount; i++) {\r
- outpw(CRTC_INDEX, CRTParms[i]);\r
- }\r
-\r
- /* clear video memory */\r
- outpw(SC_INDEX, 0x0f02);\r
- for(i=0; i<0x8000; i++) {\r
- ptr[i] = 0x0000;\r
- }\r
-}\r
-\r
-\r
-void\r
-modexLeave() {\r
- /* TODO restore original mode and palette */\r
- vgaSetMode(TEXT_MODE);\r
-}\r
-\r
-\r
-page_t\r
-modexDefaultPage() {\r
- page_t page;\r
-\r
- /* default page values */\r
- page.data = VGA;\r
- page.dx = 0;\r
- page.dy = 0;\r
- page.width = SCREEN_WIDTH;\r
- page.height = SCREEN_HEIGHT;\r
-\r
- return page;\r
-}\r
-\r
-/* returns the next page in contiguous memory\r
- * the next page will be the same size as p, by default\r
- */\r
-page_t\r
-modexNextPage(page_t *p) {\r
- page_t result;\r
-\r
- result.data = p->data + (p->width/4)*p->height; /* compute the offset */\r
- result.dx = 0;\r
- result.dy = 0;\r
- result.width = p->width;\r
- result.height = p->height;\r
-\r
- return result;\r
-}\r
-\r
-\r
-void\r
-modexShowPage(page_t *page) {\r
- word high_address;\r
- word low_address;\r
- word offset;\r
- byte crtcOffset;\r
-\r
- /* calculate offset */\r
- offset = (word) page->data;\r
- offset += page->dy * (page->width >> 2 );\r
- offset += page->dx >> 2;\r
-\r
- /* calculate crtcOffset according to virtual width */\r
- crtcOffset = page->width >> 3;\r
-\r
- high_address = HIGH_ADDRESS | (offset & 0xff00);\r
- low_address = LOW_ADDRESS | (offset << 8);\r
-\r
- /* wait for appropriate timing and then program CRTC */\r
- while ((inp(INPUT_STATUS_1) & DISPLAY_ENABLE));\r
- outpw(CRTC_INDEX, high_address);\r
- outpw(CRTC_INDEX, low_address);\r
- outp(CRTC_INDEX, 0x13);\r
- outp(CRTC_DATA, crtcOffset);\r
-\r
- /* wait for one retrace */\r
- while (!(inp(INPUT_STATUS_1) & VRETRACE)); \r
-\r
- /* do PEL panning here */\r
- outp(AC_INDEX, 0x33);\r
- outp(AC_INDEX, (page->dx & 0x03) << 1);\r
-}\r
-\r
-\r
-void\r
-modexPanPage(page_t *page, int dx, int dy) {\r
- page->dx = dx;\r
- page->dy = dy;\r
-}\r
-\r
-\r
-void\r
-modexSelectPlane(byte plane) {\r
- outp(SC_INDEX, MAP_MASK); /* select plane */\r
- outp(SC_DATA, plane);\r
-}\r
-\r
-\r
-void\r
-modexClearRegion(page_t *page, int x, int y, int w, int h, byte color) {\r
- word pageOff = (word) page->data;\r
- word xoff=x/4; /* xoffset that begins each row */\r
- word scanCount=w/4; /* number of iterations per row (excluding right clip)*/\r
- word poffset = pageOff + y*(page->width/4) + xoff; /* starting offset */\r
- word nextRow = page->width/4-scanCount-1; /* loc of next row */\r
- byte lclip[] = {0x0f, 0x0e, 0x0c, 0x08}; /* clips for rectangles not on 4s */\r
- byte rclip[] = {0x00, 0x01, 0x03, 0x07};\r
- byte left = lclip[x&0x03];\r
- byte right = rclip[(x+w)&0x03];\r
-\r
- /* handle the case which requires an extra group */\r
- if((x & 0x03) && !((x+w) & 0x03)) {\r
- right=0x0f;\r
- }\r
-\r
- __asm {\r
- MOV AX, SCREEN_SEG ; go to the VGA memory\r
- MOV ES, AX\r
- MOV DI, poffset ; go to the first pixel\r
- MOV DX, SC_INDEX ; point to the map mask\r
- MOV AL, MAP_MASK\r
- OUT DX, AL\r
- INC DX\r
- MOV AL, color ; get ready to write colors\r
- SCAN_START:\r
- MOV CX, scanCount ; count the line\r
- MOV BL, AL ; remember color\r
- MOV AL, left ; do the left clip\r
- OUT DX, AL ; set the left clip\r
- MOV AL, BL ; restore color\r
- STOSB ; write the color\r
- DEC CX\r
- JZ SCAN_DONE ; handle 1 group stuff\r
-\r
- ;-- write the main body of the scanline\r
- MOV BL, AL ; remember color\r
- MOV AL, 0x0f ; write to all pixels\r
- OUT DX, AL\r
- MOV AL, BL ; restore color\r
- REP STOSB ; write the color\r
- SCAN_DONE:\r
- MOV BL, AL ; remeber color\r
- MOV AL, right\r
- OUT DX, AL ; do the right clip\r
- MOV AL, BL ; restore color\r
- STOSB ; write pixel\r
- ADD DI, nextRow ; go to the next row\r
- DEC h\r
- JNZ SCAN_START\r
- }\r
-}\r
-\r
-\r
-void\r
-modexDrawBmp(page_t *page, int x, int y, bitmap_t *bmp) {\r
- /* draw the region (the entire freakin bitmap) */\r
- modexDrawBmpRegion(page, x, y, 0, 0, bmp->width, bmp->height, bmp);\r
-}\r
-\r
-\r
-void\r
-modexDrawBmpRegion(page_t *page, int x, int y,\r
- int rx, int ry, int rw, int rh, bitmap_t *bmp) {\r
- word poffset = (word) page->data + y*(page->width/4) + x/4;\r
- byte *data = bmp->data;\r
- word bmpOffset = (word) data + ry * bmp->width + rx;\r
- word width = rw;\r
- word height = rh;\r
- byte plane = 1 << ((byte) x & 0x03);\r
- word scanCount = width/4 + (width%4 ? 1 :0);\r
- word nextPageRow = page->width/4 - scanCount;\r
- word nextBmpRow = (word) bmp->width - width;\r
- word rowCounter;\r
- byte planeCounter = 4;\r
-\r
- //code is a bit slow here\r
- __asm {\r
- MOV AX, SCREEN_SEG ; go to the VGA memory\r
- MOV ES, AX\r
-\r
- MOV DX, SC_INDEX ; point at the map mask register\r
- MOV AL, MAP_MASK ;\r
- OUT DX, AL ;\r
-\r
- PLANE_LOOP:\r
- MOV DX, SC_DATA ; select the current plane\r
- MOV AL, plane ;\r
- OUT DX, AL ;\r
-\r
- ;-- begin plane painting\r
- MOV AX, height ; start the row counter\r
- MOV rowCounter, AX ; \r
- MOV DI, poffset ; go to the first pixel\r
- MOV SI, bmpOffset ; go to the bmp pixel\r
- ROW_LOOP:\r
- MOV CX, width ; count the columns\r
- SCAN_LOOP:\r
- MOVSB ; copy the pixel\r
- SUB CX, 3 ; we skip the next 3\r
- ADD SI, 3 ; skip the bmp pixels\r
- LOOP SCAN_LOOP ; finish the scan\r
-\r
- MOV AX, nextPageRow\r
- ADD DI, AX ; go to the next row on screen\r
- MOV AX, nextBmpRow\r
- ADD SI, AX ; go to the next row on bmp\r
-\r
- DEC rowCounter\r
- JNZ ROW_LOOP ; do all the rows\r
- ;-- end plane painting\r
-\r
- MOV AL, plane ; advance to the next plane\r
- SHL AL, 1 ;\r
- AND AL, 0x0f ; mask the plane properly\r
- MOV plane, AL ; store the plane\r
-\r
- INC bmpOffset ; start bmp at the right spot\r
-\r
- DEC planeCounter\r
- JNZ PLANE_LOOP ; do all 4 planes\r
- }\r
-}\r
-\r
-\r
-void\r
-modexDrawPlanarBuf(page_t *page, int x, int y, planar_buf_t *bmp) {\r
- /* TODO - adapt from test code */\r
-}\r
-\r
-\r
-void\r
-modexDrawSprite(page_t *page, int x, int y, bitmap_t *bmp) {\r
- /* draw the whole sprite */\r
- modexDrawSpriteRegion(page, x, y, 0, 0, bmp->width, bmp->height, bmp);\r
-}\r
-\r
-void\r
-modexDrawSpriteRegion(page_t *page, int x, int y,\r
- int rx, int ry, int rw, int rh, bitmap_t *bmp) {\r
- word poffset = (word)page->data + y*(page->width/4) + x/4;\r
- byte *data = bmp->data;\r
- word bmpOffset = (word) data + ry * bmp->width + rx;\r
- word width = rw;\r
- word height = rh;\r
- byte plane = 1 << ((byte) x & 0x03);\r
- word scanCount = width/4 + (width%4 ? 1 :0);\r
- word nextPageRow = page->width/4 - scanCount;\r
- word nextBmpRow = (word) bmp->width - width;\r
- word rowCounter;\r
- byte planeCounter = 4;\r
-\r
- __asm {\r
- MOV AX, SCREEN_SEG ; go to the VGA memory\r
- MOV ES, AX\r
-\r
- MOV DX, SC_INDEX ; point at the map mask register\r
- MOV AL, MAP_MASK ;\r
- OUT DX, AL ;\r
-\r
- PLANE_LOOP:\r
- MOV DX, SC_DATA ; select the current plane\r
- MOV AL, plane ;\r
- OUT DX, AL ;\r
-\r
- ;-- begin plane painting\r
- MOV AX, height ; start the row counter\r
- MOV rowCounter, AX ; \r
- MOV DI, poffset ; go to the first pixel\r
- MOV SI, bmpOffset ; go to the bmp pixel\r
- ROW_LOOP:\r
- MOV CX, width ; count the columns\r
- SCAN_LOOP:\r
- LODSB\r
- DEC SI\r
- CMP AL, 0\r
- JNE DRAW_PIXEL ; draw non-zero pixels\r
-\r
- INC DI ; skip the transparent pixel\r
- ADD SI, 1\r
- JMP NEXT_PIXEL\r
- DRAW_PIXEL:\r
- MOVSB ; copy the pixel\r
- NEXT_PIXEL:\r
- SUB CX, 3 ; we skip the next 3\r
- ADD SI, 3 ; skip the bmp pixels\r
- LOOP SCAN_LOOP ; finish the scan\r
-\r
- MOV AX, nextPageRow\r
- ADD DI, AX ; go to the next row on screen\r
- MOV AX, nextBmpRow\r
- ADD SI, AX ; go to the next row on bmp\r
-\r
- DEC rowCounter\r
- JNZ ROW_LOOP ; do all the rows\r
- ;-- end plane painting\r
-\r
- MOV AL, plane ; advance to the next plane\r
- SHL AL, 1 ;\r
- AND AL, 0x0f ; mask the plane properly\r
- MOV plane, AL ; store the plane\r
-\r
- INC bmpOffset ; start bmp at the right spot\r
-\r
- DEC planeCounter\r
- JNZ PLANE_LOOP ; do all 4 planes\r
- }\r
-}\r
-\r
-\r
-/* copy a region of video memory from one page to another.\r
- * It assumes that the left edge of the tile is the same on both\r
- * regions and the memory areas do not overlap.\r
- */\r
-void\r
-modexCopyPageRegion(page_t *dest, page_t *src,\r
- word sx, word sy,\r
- word dx, word dy,\r
- word width, word height)\r
-{\r
- word doffset = (word)dest->data + dy*(dest->width/4) + dx/4;\r
- word soffset = (word)src->data + sy*(src->width/4) + sx/4;\r
- word scans = width/4;\r
- word nextSrcRow = src->width/4 - scans - 1;\r
- word nextDestRow = dest->width/4 - scans - 1;\r
- byte lclip[] = {0x0f, 0x0e, 0x0c, 0x08}; /* clips for rectangles not on 4s */\r
- byte rclip[] = {0x0f, 0x01, 0x03, 0x07};\r
- byte left = lclip[sx&0x03];\r
- byte right = rclip[(sx+width)&0x03];\r
-\r
- __asm {\r
- MOV AX, SCREEN_SEG ; work in the vga space\r
- MOV ES, AX ;\r
- MOV DI, doffset ;\r
- MOV SI, soffset ;\r
-\r
- MOV DX, GC_INDEX ; turn off cpu bits\r
- MOV AX, 0008h ;\r
- OUT DX, AX\r
-\r
- MOV AX, SC_INDEX ; point to the mask register\r
- MOV DX, AX ;\r
- MOV AL, MAP_MASK ;\r
- OUT DX, AL ;\r
- INC DX ;\r
-\r
- ROW_START:\r
- PUSH DS\r
- MOV AX, ES\r
- MOV DS, AX\r
- MOV CX, scans ; the number of latches\r
-\r
- MOV AL, left ; do the left column\r
- OUT DX, AL ;\r
- MOVSB ;\r
- DEC CX ;\r
-\r
- MOV AL, 0fh ; do the inner columns\r
- OUT DX, AL\r
- REP MOVSB ; copy the pixels\r
-\r
- MOV AL, right ; do the right column\r
- OUT DX, AL\r
- MOVSB\r
- POP DS\r
-\r
- MOV AX, SI ; go the start of the next row\r
- ADD AX, nextSrcRow ;\r
- MOV SI, AX ;\r
- MOV AX, DI ;\r
- ADD AX, nextDestRow ;\r
- MOV DI, AX ;\r
-\r
- DEC height ; do the rest of the actions\r
- JNZ ROW_START ;\r
-\r
- MOV DX, GC_INDEX+1 ; go back to CPU data\r
- MOV AL, 0ffh ; none from latches\r
- OUT DX, AL ;\r
- }\r
-}\r
-\r
-\r
-/* fade and flash */\r
-void\r
-modexFadeOn(word fade, byte *palette) {\r
- fadePalette(-fade, 64, 64/fade+1, palette);\r
-}\r
-\r
-\r
-void\r
-modexFadeOff(word fade, byte *palette) {\r
- fadePalette(fade, 0, 64/fade+1, palette);\r
-}\r
-\r
-\r
-void\r
-modexFlashOn(word fade, byte *palette) {\r
- fadePalette(fade, -64, 64/fade+1, palette);\r
-}\r
-\r
-\r
-void\r
-modexFlashOff(word fade, byte *palette) {\r
- fadePalette(-fade, 0, 64/fade+1, palette);\r
-}\r
-\r
-\r
-static void\r
-fadePalette(sbyte fade, sbyte start, word iter, byte *palette) {\r
- word i;\r
- byte dim = start;\r
-\r
- /* handle the case where we just update */\r
- if(iter == 0) {\r
- modexPalUpdate(palette);\r
- return;\r
- }\r
-\r
- while(iter > 0) { /* FadeLoop */\r
- for(i=0; i<PAL_SIZE; i++) { /* loadpal_loop */\r
- tmppal[i] = palette[i] - dim;\r
- if(tmppal[i] > 127) {\r
- tmppal[i] = 0;\r
- } else if(tmppal[i] > 63) {\r
- tmppal[i] = 63;\r
- }\r
- }\r
- modexPalUpdate(tmppal);\r
- iter--;\r
- dim += fade;\r
- }\r
-}\r
-\r
-\r
-/* save and load */\r
-void\r
-modexPalSave(byte *palette) {\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
- }\r
-}\r
-\r
-\r
-byte *\r
-modexNewPal() {\r
- byte *ptr;\r
- ptr = malloc(PAL_SIZE);\r
-\r
- /* handle errors */\r
- if(!ptr) {\r
- printf("Could not allocate palette.\n");\r
- exit(-1);\r
- }\r
-\r
- return ptr;\r
-}\r
-\r
-\r
-void\r
-modexLoadPalFile(byte *filename, byte **palette) {\r
- FILE *file;\r
- byte *ptr;\r
-\r
- /* free the palette if it exists */\r
- if(*palette) {\r
- free(*palette);\r
- }\r
-\r
- /* allocate the new palette */\r
- *palette = modexNewPal();\r
-\r
- /* open the file */\r
- file = fopen(filename, "rb");\r
- if(!file) {\r
- printf("Could not open palette file: %s\n", filename);\r
- exit(-2);\r
- }\r
-\r
- /* read the file */\r
- ptr = *palette;\r
- while(!feof(file)) {\r
- *ptr++ = fgetc(file);\r
- }\r
-\r
- fclose(file);\r
-}\r
-\r
-\r
-void\r
-modexSavePalFile(char *filename, byte *pal) {\r
- unsigned int i;\r
- FILE *file;\r
-\r
- /* open the file for writing */\r
- file = fopen(filename, "wb");\r
- if(!file) {\r
- printf("Could not open %s for writing\n", filename);\r
- exit(-2);\r
- }\r
-\r
- /* write the data to the file */\r
- fwrite(pal, 1, PAL_SIZE, file);\r
- fclose(file);\r
-}\r
-\r
-\r
-/* blanking */\r
-void\r
-modexPalBlack() {\r
- fadePalette(-1, 64, 1, tmppal);\r
-}\r
-\r
-\r
-void\r
-modexPalWhite() {\r
- fadePalette(-1, -64, 1, tmppal);\r
-}\r
-\r
-\r
-/* utility */\r
-void\r
-modexPalUpdate(byte *p) {\r
- int i;\r
- modexWaitBorder();\r
- outp(PAL_WRITE_REG, 0); /* start at the beginning of palette */\r
- for(i=0; i<PAL_SIZE/2; i++) {\r
- outp(PAL_DATA_REG, p[i]);\r
- }\r
- modexWaitBorder(); /* waits one retrace -- less flicker */\r
- for(i=PAL_SIZE/2; i<PAL_SIZE; i++) {\r
- outp(PAL_DATA_REG, p[i]);\r
- }\r
-}\r
-\r
-\r
-void\r
-modexWaitBorder() {\r
- while(inp(INPUT_STATUS_1) & 8) {\r
- /* spin */\r
- }\r
-\r
- while(!(inp(INPUT_STATUS_1) & 8)) {\r
- /* spin */\r
- }\r
-}\r
+/* Project 16 Source Code~
+ * Copyright (C) 2012-2015 sparky4 & pngwen & andrius4669
+ *
+ * This file is part of Project 16.
+ *
+ * Project 16 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Project 16 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, see <http://www.gnu.org/licenses/>, or
+ * write to the Free Software Foundation, Inc., 51 Franklin Street,
+ * Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ */
+
+#include <dos.h>
+#include <string.h>
+#include <mem.h>
+#include <conio.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "src/lib/modex16.h"
+
+byte far* VGA=(byte far*) 0xA0000000; /* this points to video memory. */
+/*word text_mask[16] = {
+ 0x0002, 0x0102, 0x0202, 0x0302,
+ 0x0402, 0x0502, 0x0602, 0x0702,
+ 0x0802, 0x0902, 0x0A02, 0x0B02,
+ 0x0C02, 0x0D02, 0x0E02, 0x0F02
+};*/
+
+static void fadePalette(sbyte fade, sbyte start, word iter, byte *palette);
+static byte tmppal[PAL_SIZE];
+
+static void
+vgaSetMode(byte mode)
+{
+ union REGS regs;
+
+ regs.h.ah = SET_MODE;
+ regs.h.al = mode;
+ int86(VIDEO_INT, ®s, ®s);
+}
+
+
+/* -========================= Entry Points ==========================- */
+void
+modexEnter() {
+ word i;
+ dword far*ptr=(dword far*)VGA; /* used for faster screen clearing */
+ word CRTParms[] = {
+ 0x0d06, /* vertical total */
+ 0x3e07, /* overflow (bit 8 of vertical counts) */
+ 0x4109, /* cell height (2 to double-scan */
+ 0xea10, /* v sync start */
+ 0xac11, /* v sync end and protect cr0-cr7 */
+ 0xdf12, /* vertical displayed */
+ 0x0014, /* turn off dword mode */
+ 0xe715, /* v blank start */
+ 0x0616, /* v blank end */
+ 0xe317 /* turn on byte mode */
+ };
+ int CRTParmCount = sizeof(CRTParms) / sizeof(CRTParms[0]);
+
+ /* TODO save current video mode and palette */
+ vgaSetMode(VGA_256_COLOR_MODE);
+
+ /* disable chain4 mode */
+ outpw(SC_INDEX, 0x0604);
+
+ /* synchronous reset while setting Misc Output */
+ outpw(SC_INDEX, 0x0100);
+
+ /* select 25 MHz dot clock & 60 Hz scanning rate */
+ outp(MISC_OUTPUT, 0xe3);
+
+ /* undo reset (restart sequencer) */
+ outpw(SC_INDEX, 0x0300);
+
+ /* reprogram the CRT controller */
+ outp(CRTC_INDEX, 0x11); /* VSync End reg contains register write prot */
+ outp(CRTC_DATA, 0x7f); /* get current write protect on varios regs */
+
+ /* send the CRTParms */
+ for(i=0; i<CRTParmCount; i++) {
+ outpw(CRTC_INDEX, CRTParms[i]);
+ }
+
+ /* clear video memory */
+ outpw(SC_INDEX, 0x0f02);
+ for(i=0; i<0x8000; i++) {
+ ptr[i] = 0x0000;
+ }
+}
+
+
+void
+modexLeave() {
+ /* TODO restore original mode and palette */
+ vgaSetMode(TEXT_MODE);
+}
+
+
+page_t
+modexDefaultPage() {
+ page_t page;
+
+ /* default page values */
+ page.data = VGA;
+ page.dx = 0;
+ page.dy = 0;
+ page.width = SCREEN_WIDTH;
+ page.height = SCREEN_HEIGHT;
+ page.id = 0;
+
+ return page;
+}
+
+/* returns the next page in contiguous memory
+ * the next page will be the same size as p, by default
+ */
+page_t
+modexNextPage(page_t *p) {
+ page_t result;
+
+ result.data = p->data + (p->width/4)*p->height; /* compute the offset */
+ result.dx = 0;
+ result.dy = 0;
+ result.width = p->width;
+ result.height = p->height;
+ result.id = p->id+1;
+
+ return result;
+}
+
+//next page with defined dimentions~
+page_t
+modexNextPage0(page_t *p, word x, word y)
+{
+ page_t result;
+
+ result.data = p->data + (p->width/4)*p->height; /* compute the offset */
+ result.dx = 0;
+ result.dy = 0;
+ result.width = x;
+ result.height = y;
+ result.id = p->id+1;
+
+ return result;
+}
+
+
+void
+modexShowPage(page_t *page) {
+ word high_address;
+ word low_address;
+ word offset;
+ byte crtcOffset;
+
+ /* calculate offset */
+ offset = (word) page->data;
+ offset += page->dy * (page->width >> 2 );
+ offset += page->dx >> 2;
+
+ /* calculate crtcOffset according to virtual width */
+ crtcOffset = page->width >> 3;
+
+ high_address = HIGH_ADDRESS | (offset & 0xff00);
+ low_address = LOW_ADDRESS | (offset << 8);
+
+ /* wait for appropriate timing and then program CRTC */
+ while ((inp(INPUT_STATUS_1) & DISPLAY_ENABLE));
+ outpw(CRTC_INDEX, high_address);
+ outpw(CRTC_INDEX, low_address);
+ outp(CRTC_INDEX, 0x13);
+ outp(CRTC_DATA, crtcOffset);
+
+ /* wait for one retrace */
+ while (!(inp(INPUT_STATUS_1) & VRETRACE));
+
+ /* do PEL panning here */
+ outp(AC_INDEX, 0x33);
+ outp(AC_INDEX, (page->dx & 0x03) << 1);
+}
+
+
+void
+modexPanPage(page_t *page, int dx, int dy) {
+ page->dx = dx;
+ page->dy = dy;
+}
+
+
+void
+modexSelectPlane(byte plane) {
+ outp(SC_INDEX, MAP_MASK); /* select plane */
+ outp(SC_DATA, plane);
+}
+
+
+void
+modexClearRegion(page_t *page, int x, int y, int w, int h, byte color) {
+ word pageOff = (word) page->data;
+ word xoff=x/4; /* xoffset that begins each row */
+ word scanCount=w/4; /* number of iterations per row (excluding right clip)*/
+ word poffset = pageOff + y*(page->width/4) + xoff; /* starting offset */
+ word nextRow = page->width/4-scanCount-1; /* loc of next row */
+ byte lclip[] = {0x0f, 0x0e, 0x0c, 0x08}; /* clips for rectangles not on 4s */
+ byte rclip[] = {0x00, 0x01, 0x03, 0x07};
+ byte left = lclip[x&0x03];
+ byte right = rclip[(x+w)&0x03];
+
+ /* handle the case which requires an extra group */
+ if((x & 0x03) && !((x+w) & 0x03)) {
+ right=0x0f;
+ }
+
+ __asm {
+ MOV AX, SCREEN_SEG ; go to the VGA memory
+ MOV ES, AX
+ MOV DI, poffset ; go to the first pixel
+ MOV DX, SC_INDEX ; point to the map mask
+ MOV AL, MAP_MASK
+ OUT DX, AL
+ INC DX
+ MOV AL, color ; get ready to write colors
+ SCAN_START:
+ MOV CX, scanCount ; count the line
+ MOV BL, AL ; remember color
+ MOV AL, left ; do the left clip
+ OUT DX, AL ; set the left clip
+ MOV AL, BL ; restore color
+ STOSB ; write the color
+ DEC CX
+ JZ SCAN_DONE ; handle 1 group stuff
+
+ ;-- write the main body of the scanline
+ MOV BL, AL ; remember color
+ MOV AL, 0x0f ; write to all pixels
+ OUT DX, AL
+ MOV AL, BL ; restore color
+ REP STOSB ; write the color
+ SCAN_DONE:
+ MOV BL, AL ; remeber color
+ MOV AL, right
+ OUT DX, AL ; do the right clip
+ MOV AL, BL ; restore color
+ STOSB ; write pixel
+ ADD DI, nextRow ; go to the next row
+ DEC h
+ JNZ SCAN_START
+ }
+}
+
+
+void
+oldDrawBmp(byte far* page, int x, int y, bitmap_t *bmp, byte sprite)
+{
+ byte plane;
+ word px, py;
+ word offset;
+
+ /* TODO Make this fast. It's SLOOOOOOW */
+ for(plane=0; plane < 4; plane++) {
+ modexSelectPlane(PLANE(plane+x));
+ for(px = plane; px < bmp->width; px+=4) {
+ offset=px;
+ for(py=0; py<bmp->height; py++) {
+ if(!sprite || bmp->data[offset])
+ page[PAGE_OFFSET(x+px, y+py)] = bmp->data[offset];
+ offset+=bmp->width;
+ }
+ }
+ }
+}
+
+
+void
+modexDrawBmp(page_t *page, int x, int y, bitmap_t *bmp) {
+ /* draw the region (the entire freakin bitmap) */
+ modexDrawBmpRegion(page, x, y, 0, 0, bmp->width, bmp->height, bmp);
+}
+
+
+void
+modexDrawBmpRegion(page_t *page, int x, int y,
+ int rx, int ry, int rw, int rh, bitmap_t *bmp) {
+ word poffset = (word) page->data + y*(page->width/4) + x/4;
+ byte *data = bmp->data;//+bmp->offset;
+ word bmpOffset = (word) data + ry * bmp->width + rx;
+ word width = rw;
+ word height = rh;
+ byte plane = 1 << ((byte) x & 0x03);
+ word scanCount = width/4 + (width%4 ? 1 :0);
+ word nextPageRow = page->width/4 - scanCount;
+ word nextBmpRow = (word) bmp->width - width;
+ word rowCounter;
+ byte planeCounter = 4;
+
+ //code is a bit slow here
+ __asm {
+ MOV AX, SCREEN_SEG ; go to the VGA memory
+ MOV ES, AX
+
+ MOV DX, SC_INDEX ; point at the map mask register
+ MOV AL, MAP_MASK ;
+ OUT DX, AL ;
+
+ PLANE_LOOP:
+ MOV DX, SC_DATA ; select the current plane
+ MOV AL, plane ;
+ OUT DX, AL ;
+
+ ;-- begin plane painting
+ MOV AX, height ; start the row counter
+ MOV rowCounter, AX ;
+ MOV DI, poffset ; go to the first pixel
+ MOV SI, bmpOffset ; go to the bmp pixel
+ ROW_LOOP:
+ MOV CX, width ; count the columns
+ SCAN_LOOP:
+ MOVSB ; copy the pixel
+ SUB CX, 3 ; we skip the next 3
+ ADD SI, 3 ; skip the bmp pixels
+ LOOP SCAN_LOOP ; finish the scan
+
+ MOV AX, nextPageRow
+ ADD DI, AX ; go to the next row on screen
+ MOV AX, nextBmpRow
+ ADD SI, AX ; go to the next row on bmp
+
+ DEC rowCounter
+ JNZ ROW_LOOP ; do all the rows
+ ;-- end plane painting
+
+ MOV AL, plane ; advance to the next plane
+ SHL AL, 1 ;
+ AND AL, 0x0f ; mask the plane properly
+ MOV plane, AL ; store the plane
+
+ INC bmpOffset ; start bmp at the right spot
+
+ DEC planeCounter
+ JNZ PLANE_LOOP ; do all 4 planes
+ }
+}
+
+
+void
+modexDrawPlanarBuf(page_t *page, int x, int y, planar_buf_t *bmp) {
+ /* TODO - adapt from test code */
+ int plane;
+ for(plane=0; plane < 4; plane++)
+ {
+ //fack
+ }
+}
+
+
+void
+modexDrawSprite(page_t *page, int x, int y, bitmap_t *bmp) {
+ /* draw the whole sprite */
+ modexDrawSpriteRegion(page, x, y, 0, 0, bmp->width, bmp->height, bmp);
+}
+
+void
+modexDrawSpriteRegion(page_t *page, int x, int y,
+ int rx, int ry, int rw, int rh, bitmap_t *bmp) {
+ word poffset = (word)page->data + y*(page->width/4) + x/4;
+ byte *data = bmp->data;//+bmp->offset;
+ word bmpOffset = (word) data + ry * bmp->width + rx;
+ word width = rw;
+ word height = rh;
+ byte plane = 1 << ((byte) x & 0x03);
+ word scanCount = width/4 + (width%4 ? 1 :0);
+ word nextPageRow = page->width/4 - scanCount;
+ word nextBmpRow = (word) bmp->width - width;
+ word rowCounter;
+ byte planeCounter = 4;
+
+ __asm {
+ MOV AX, SCREEN_SEG ; go to the VGA memory
+ MOV ES, AX
+
+ MOV DX, SC_INDEX ; point at the map mask register
+ MOV AL, MAP_MASK ;
+ OUT DX, AL ;
+
+ PLANE_LOOP:
+ MOV DX, SC_DATA ; select the current plane
+ MOV AL, plane ;
+ OUT DX, AL ;
+
+ ;-- begin plane painting
+ MOV AX, height ; start the row counter
+ MOV rowCounter, AX ;
+ MOV DI, poffset ; go to the first pixel
+ MOV SI, bmpOffset ; go to the bmp pixel
+ ROW_LOOP:
+ MOV CX, width ; count the columns
+ SCAN_LOOP:
+ LODSB
+ DEC SI
+ CMP AL, 0
+ JNE DRAW_PIXEL ; draw non-zero pixels
+
+ INC DI ; skip the transparent pixel
+ ADD SI, 1
+ JMP NEXT_PIXEL
+ DRAW_PIXEL:
+ MOVSB ; copy the pixel
+ NEXT_PIXEL:
+ SUB CX, 3 ; we skip the next 3
+ ADD SI, 3 ; skip the bmp pixels
+ LOOP SCAN_LOOP ; finish the scan
+
+ MOV AX, nextPageRow
+ ADD DI, AX ; go to the next row on screen
+ MOV AX, nextBmpRow
+ ADD SI, AX ; go to the next row on bmp
+
+ DEC rowCounter
+ JNZ ROW_LOOP ; do all the rows
+ ;-- end plane painting
+
+ MOV AL, plane ; advance to the next plane
+ SHL AL, 1 ;
+ AND AL, 0x0f ; mask the plane properly
+ MOV plane, AL ; store the plane
+
+ INC bmpOffset ; start bmp at the right spot
+
+ DEC planeCounter
+ JNZ PLANE_LOOP ; do all 4 planes
+ }
+}
+
+
+/* copy a region of video memory from one page to another.
+ * It assumes that the left edge of the tile is the same on both
+ * regions and the memory areas do not overlap.
+ */
+void
+modexCopyPageRegion(page_t *dest, page_t *src,
+ word sx, word sy,
+ word dx, word dy,
+ word width, word height)
+{
+ word doffset = (word)dest->data + dy*(dest->width/4) + dx/4;
+ word soffset = (word)src->data + sy*(src->width/4) + sx/4;
+ word scans = width/4;
+ word nextSrcRow = src->width/4 - scans - 1;
+ word nextDestRow = dest->width/4 - scans - 1;
+ byte lclip[] = {0x0f, 0x0e, 0x0c, 0x08}; /* clips for rectangles not on 4s */
+ byte rclip[] = {0x0f, 0x01, 0x03, 0x07};
+ byte left = lclip[sx&0x03];
+ byte right = rclip[(sx+width)&0x03];
+
+ __asm {
+ MOV AX, SCREEN_SEG ; work in the vga space
+ MOV ES, AX ;
+ MOV DI, doffset ;
+ MOV SI, soffset ;
+
+ MOV DX, GC_INDEX ; turn off cpu bits
+ MOV AX, 0008h ;
+ OUT DX, AX
+
+ MOV AX, SC_INDEX ; point to the mask register
+ MOV DX, AX ;
+ MOV AL, MAP_MASK ;
+ OUT DX, AL ;
+ INC DX ;
+
+ ROW_START:
+ PUSH DS
+ MOV AX, ES
+ MOV DS, AX
+ MOV CX, scans ; the number of latches
+
+ MOV AL, left ; do the left column
+ OUT DX, AL ;
+ MOVSB ;
+ DEC CX ;
+
+ MOV AL, 0fh ; do the inner columns
+ OUT DX, AL
+ REP MOVSB ; copy the pixels
+
+ MOV AL, right ; do the right column
+ OUT DX, AL
+ MOVSB
+ POP DS
+
+ MOV AX, SI ; go the start of the next row
+ ADD AX, nextSrcRow ;
+ MOV SI, AX ;
+ MOV AX, DI ;
+ ADD AX, nextDestRow ;
+ MOV DI, AX ;
+
+ DEC height ; do the rest of the actions
+ JNZ ROW_START ;
+
+ MOV DX, GC_INDEX+1 ; go back to CPU data
+ MOV AL, 0ffh ; none from latches
+ OUT DX, AL ;
+ }
+}
+
+
+/* fade and flash */
+void
+modexFadeOn(word fade, byte *palette) {
+ fadePalette(-fade, 64, 64/fade+1, palette);
+}
+
+
+void
+modexFadeOff(word fade, byte *palette) {
+ fadePalette(fade, 0, 64/fade+1, palette);
+}
+
+
+void
+modexFlashOn(word fade, byte *palette) {
+ fadePalette(fade, -64, 64/fade+1, palette);
+}
+
+
+void
+modexFlashOff(word fade, byte *palette) {
+ fadePalette(-fade, 0, 64/fade+1, palette);
+}
+
+
+static void
+fadePalette(sbyte fade, sbyte start, word iter, byte *palette) {
+ word i;
+ byte dim = start;
+
+ /* handle the case where we just update */
+ if(iter == 0) {
+ modexPalUpdate1(palette);
+ return;
+ }
+
+ while(iter > 0) { /* FadeLoop */
+ for(i=0; i<PAL_SIZE; i++) { /* loadpal_loop */
+ tmppal[i] = palette[i] - dim;
+ if(tmppal[i] > 127) {
+ tmppal[i] = 0;
+ } else if(tmppal[i] > 63) {
+ tmppal[i] = 63;
+ }
+ }
+ modexPalUpdate1(tmppal);
+ iter--;
+ dim += fade;
+ }
+}
+
+
+/* save and load */
+void
+modexPalSave(byte *palette) {
+ int i;
+
+ outp(PAL_READ_REG, 0); /* start at palette entry 0 */
+ for(i=0; i<PAL_SIZE; i++) {
+ palette[i] = inp(PAL_DATA_REG); /* read the palette data */
+ }
+}
+
+
+byte *
+modexNewPal() {
+ byte *ptr;
+ ptr = malloc(PAL_SIZE);
+
+ /* handle errors */
+ if(!ptr) {
+ printf("Could not allocate palette.\n");
+ exit(-1);
+ }
+
+ return ptr;
+}
+
+
+void
+modexLoadPalFile(byte *filename, byte **palette) {
+ FILE *file;
+ byte *ptr;
+
+ /* free the palette if it exists */
+ if(*palette) {
+ free(*palette);
+ }
+
+ /* allocate the new palette */
+ *palette = modexNewPal();
+
+ /* open the file */
+ file = fopen(filename, "rb");
+ if(!file) {
+ printf("Could not open palette file: %s\n", filename);
+ exit(-2);
+ }
+
+ /* read the file */
+ ptr = *palette;
+ while(!feof(file)) {
+ *ptr++ = fgetc(file);
+ }
+
+ fclose(file);
+}
+
+
+void
+modexSavePalFile(char *filename, byte *pal) {
+ unsigned int i;
+ FILE *file;
+
+ /* open the file for writing */
+ file = fopen(filename, "wb");
+ if(!file) {
+ printf("Could not open %s for writing\n", filename);
+ exit(-2);
+ }
+
+ /* write the data to the file */
+ fwrite(pal, 1, PAL_SIZE, file);
+ fclose(file);
+}
+
+
+/* blanking */
+void
+modexPalBlack() {
+ fadePalette(-1, 64, 1, tmppal);
+}
+
+
+void
+modexPalWhite() {
+ fadePalette(-1, -64, 1, tmppal);
+}
+
+
+/* utility */
+void
+modexPalUpdate(bitmap_t *bmp, word *i, word qp, word aqoffset)
+{
+ byte *p = bmp->palette;
+ word w=0;
+ word q=0;
+ word qq=0;
+ static word a[PAL_SIZE]; //palette array of change values!
+ word z=0, aq=0, aa=0, pp=0;
+
+ modexWaitBorder();
+ if((*i)==0)
+ {
+ memset(a, -1, sizeof(a));
+ outp(PAL_WRITE_REG, 0); /* start at the beginning of palette */
+ }
+ else if(qp==0)
+ {
+ q=(*i);
+ }
+ else
+ {
+ q=(*i);
+ qq=(*i)/3;
+// printf("q: %02d\n", (q));
+// printf("qq: %02d\n", (qq));
+ //printf(" (*i)-q=%02d\n", (*i)-q);
+ outp(PAL_WRITE_REG, qq); /* start at the beginning of palette */
+ }
+ if((*i)<PAL_SIZE/2 && w==0)
+ {
+ for(; (*i)<PAL_SIZE/2; (*i)++)
+ {
+ //if(i%3==0 && (p[i+5]==p[i+4] && p[i+4]==p[i+3] && p[i+3]==p[i+2] && p[i+2]==p[i+1] && p[i+1]==p[i] && p[i+5]==p[i]))
+//____ if((qp>0)&&((*i)-q)%3==0 && (p[((*i)-q)]==p[((*i)-q)+3] && p[((*i)-q)+1]==p[((*i)-q)+4] && p[((*i)-q)+2]==p[((*i)-q)+5])) outp(PAL_DATA_REG, p[(*i)-q]); else
+ if(((((*i)-q)%3==0)) && (p[((*i)-q)]==p[((*i)-q)+3] && p[((*i)-q)+1]==p[((*i)-q)+4] && p[((*i)-q)+2]==p[((*i)-q)+5]))
+ {
+ w++;
+ break;
+ }
+ else if(qp>0 && (*i)>=(qp) && (*i)<((qp)+3))
+ {
+ //printf("qp=%d\n", qp);
+ //printf(" (*i)=%d a[%d]=%d\n", (*i), qp, a[qp]);
+ printf(" %d's color=%d\n", (*i), (a[qp])-(bmp->offset*3)+qp);
+ //outp(PAL_DATA_REG, p[((a[qp])-(bmp->offset*3)+qp)]);// fix this shit!
+ if((*i)+1==(qp)+3){ w++; /*(*i)++;*/ break; }
+ }
+ else
+ {
+ if(bmp->offset==0 && (*i)<3 && q==0) outp(PAL_DATA_REG, 0);
+ else
+ if(qp==0) outp(PAL_DATA_REG, p[(*i)-q]);
+ else{ //outp(PAL_DATA_REG, p[((*i)-(bmp->offset*3)+qp)]);
+ printf("p[]=%d qp=%d p[]-qp=%d\n", ((*i)-(bmp->offset*3)), qp, ((*i)-(bmp->offset*3))+qp); }
+ }
+ }
+ //if(qp>0) printf("qp=%d\n", qp);
+ //if(qp>0) printf(" (*i)=%d\n", (*i)/3);
+ }
+ modexWaitBorder(); /* waits one retrace -- less flicker */
+ if((*i)>=PAL_SIZE/2 && w==0)
+ {
+ for(; (*i)<PAL_SIZE; (*i)++)
+ {
+//____ if((qp>0)&&((*i)-q)%3==0 && (p[((*i)-q)]==p[((*i)-q)+3] && p[((*i)-q)+1]==p[((*i)-q)+4] && p[((*i)-q)+2]==p[((*i)-q)+5])) outp(PAL_DATA_REG, p[(*i)-q]); else
+ if(((((*i)-q)%3==0)) && (p[((*i)-q)]==p[((*i)-q)+3] && p[((*i)-q)+1]==p[((*i)-q)+4] && p[((*i)-q)+2]==p[((*i)-q)+5]))
+ {
+ w++;
+ break;
+ }
+ else if(qp>0 && (*i)>=(qp) && (*i)<((qp)+3))
+ {
+ //printf("qp=%d\n", qp);
+ //printf(" (*i)=%d a[%d]=%d\n", (*i), qp, a[qp]);
+ printf(" %d's color=%d\n", (*i), (a[qp]-(bmp->offset*3)+qp));
+ //outp(PAL_DATA_REG, p[((a[qp])-(bmp->offset*3)+qp)]);// fix this shit!
+ if((*i)+1==(qp)+3){ w++; /*(*i)++;*/ break; }
+ }
+ else
+ {
+ if(qp==0) outp(PAL_DATA_REG, p[(*i)-q]);
+ else{ //outp(PAL_DATA_REG, p[((*i)-(bmp->offset*3)+qp)]);
+ printf("p[]=%d qp=%d p[]-qp=%d\n", ((*i)-(bmp->offset*3)), qp, ((*i)-(bmp->offset*3))+qp); }
+ }
+ }
+ //printf(" (*i)=%d\n", (*i)/3);
+ }
+
+printf("\nqqqqqqqq\n\n");
+
+ //palette checker~
+ if(q>0 && qp==0)
+ {
+ long lq;
+ long bufSize = (bmp->width * bmp->height);
+ pp = q;
+ //printf("1(*i)=%02d\n", (*i)/3);
+ //printf("1z=%02d\n", z/3);
+ chkcolor(bmp, &q, &a, &aa, &z, i);
+ //printf("2(*i)=%02d\n", (*i)/3);
+ //printf("2z=%02d\n", z/3);
+ aq=0;
+aqpee:
+ while(aq<=aa)
+ {
+// printf("a[%02d]=(%d)\n", aq, a[aq]);
+ if(a[aq]==-1) aq++;
+ else { aqoffset++; break; }
+ }
+//update the image data here!
+ for(lq=0; lq<bufSize; lq++)
+ {
+ /*
+ note to self
+ use a[qp] instead of bmp->offset for this spot!
+ NO! wwww
+ */
+
+ /*
+ Facking bloody point the values of the changed palette to correct values.... major confusion! wwww
+ */
+
+ //(offset/bmp->offset)*bmp->offset
+
+
+ //printf("%02d ",bmp->data[lq]+bmp->offset);
+ //if(lq > 0 && lq%bmp->width==0) printf("\n");
+ //printf("%02d_", bmp->data[lq]+bmp->offset);
+ /*if(bmp->data[lq]+bmp->offset==aq)
+ {
+ //printf("%02d", bmp->data[lq]);
+ //printf("\n%02d\n", bmp->offset);
+ printf("aq=%02d ", aq);
+ printf("a[aq]=%02d ", a[aq]);
+ printf("a[aq]+aqpp=%02d ", a[aq]+aqpp);
+ printf("a[aq]-aqpp=%02d\n", a[aq]-aqpp);
+ //bmp->data[lq]=((bmp->data[lq]+bmp->offset)-a[aq]);
+//++++ bmp->data[lq]=a[aq]-aqpp;
+// printf("_%d ", bmp->data[lq]);
+ //if(lq > 0 && lq%bmp->width==0) printf("\n");
+ }
+ else if(bmp->data[lq]+bmp->offset < ((*i)/3)-aqpp)
+ {
+ if(bmp->data[lq]+bmp->offset >= aq)
+ {
+ bmp->data[lq]=(bmp->data[lq]+bmp->offset)-aqpp;//-((z-(*i))/3);
+ //printf("_%d ", bmp->data[lq]+bmp->offset)-aqpp-((z-(*i))/3);
+ }
+ else bmp->data[lq]+=(bmp->offset-aqpp);
+ }*/
+
+ //printf("%02d`", bmp->data[lq]);
+ //if(lq > 0 && lq%bmp->width==0) printf("\n");
+ }
+
+//printf(" aq=%02d\n", aq);
+//printf(" aa=%02d\n", aa);
+
+ //update the palette~
+ modexPalUpdate(bmp, &pp, aq, aqoffset);
+ (*i)=pp;
+
+ if(aq<aa){ pp=q; aq++; goto aqpee; }
+ }
+}
+
+void
+modexPalUpdate1(byte *p)
+{
+ int i;
+ modexWaitBorder();
+ outp(PAL_WRITE_REG, 0); /* start at the beginning of palette */
+ for(i=0; i<PAL_SIZE/2; i++)
+ {
+ outp(PAL_DATA_REG, p[i]);
+ }
+ modexWaitBorder(); /* waits one retrace -- less flicker */
+ for(; i<PAL_SIZE; i++)
+ {
+ outp(PAL_DATA_REG, p[(i)]);
+ }
+}
+
+void
+modexPalUpdate0(byte *p)
+{
+ int i;
+ modexWaitBorder();
+ outp(PAL_WRITE_REG, 0); /* start at the beginning of palette */
+ for(i=0; i<PAL_SIZE/2; i++)
+ {
+ outp(PAL_DATA_REG, rand());
+ }
+ modexWaitBorder(); /* waits one retrace -- less flicker */
+ for(; i<PAL_SIZE; i++)
+ {
+ outp(PAL_DATA_REG, rand());
+ }
+}
+
+//color checker~
+//i want to make another vesion that checks the palette when the palette is being appened~
+void chkcolor(bitmap_t *bmp, word *q, word *a, word *aa, word *z, word *i/*, word *offset*/)
+{
+ byte *pal;
+ word zz=0;
+ pal = modexNewPal();
+ modexPalSave(pal);
+ //printf("q: %02d\n", (*q));
+ printf("chkcolor start~\n");
+ printf("1 (*z): %d\n", (*z)/3);
+ printf("1 (*i): %d\n", (*i)/3);
+// printf("1 offset of color in palette (*q): %d\n", (*q)/3);
+ printf("wwwwwwwwwwwwwwww\n");
+ //check palette for dups
+ for(; (*z)<PAL_SIZE; (*z)+=3)
+ {
+ //printf("\n z: %d\n", (*z));
+ //printf(" q: %d\n", (*q));
+ //printf(" z+q: %d\n\n", ((*z)+(*q)));
+ //if((*z)%3==0)
+ //{
+//---- if(pal[(*z)]==pal[(*z)+3] && pal[(*z)+1]==pal[(*z)+4] && pal[(*z)+2]==pal[(*z)+5])
+ if((*z)==(*i))
+ {
+// printf("\n%d [%02d][%02d][%02d]\n", (*z), pal[(*z)], pal[(*z)+1], pal[(*z)+2]);
+// printf("%d [%02d][%02d][%02d]\n\n", (*z)+3, pal[(*z)+3], pal[(*z)+4], pal[(*z)+5]);
+//0000 (*z)-=3;
+ break;
+ }
+ else for(zz=0; zz<(*q); zz+=3)
+ {
+ //printf("zz: %02d\n", zz/3);
+ if(zz%3==0)
+ {
+ if(pal[((*z)+(*q))]==pal[((*z)+(*q))+3] && pal[((*z)+(*q))+1]==pal[((*z)+(*q))+4] && pal[((*z)+(*q))+2]==pal[((*z)+(*q))+5]) //break if duplicate colors found in palette because it have reached the end of the current data of the palette
+ {
+// (*z)-=3;
+// (*i)-=3;
+// printf("\nzq1:%d[%02d][%02d][%02d]\n", (zz+q), pal[(zz+q)], pal[(zz+q)+1], pal[(zz+q)+2]);
+// printf("zq2:%d[%02d][%02d][%02d]\n\n", (zz+q)+3, pal[(zz+q)+3], pal[(zz+q)+4], pal[(zz+q)+5]);
+ break;
+ }
+ else if(pal[zz]==pal[((*z)+(*q))] && pal[zz+1]==pal[((*z)+(*q))+1] && pal[zz+2]==pal[((*z)+(*q))+2])
+ {
+// printf("\n\nwwwwwwwwwwwwwwww\n");
+// printf(" zq: %d [%02d][%02d][%02d] value that is needing to be changed~\n", ((*z)+(*q))/3, pal[((*z)+(*q))], pal[((*z)+(*q))+1], pal[((*z)+(*q))+2]);
+// printf(" zz: %d [%02d][%02d][%02d] value that the previous value is going to change to~\n", (zz)/3, pal[zz], pal[zz+1], pal[zz+2]);
+// //printf(" zv: %d [%02d][%02d][%02d] wwww\n", (zz-z+q)/3, pal[(zz-z+q)], pal[(zz-z+q)+1], pal[(zz-z+q)+2]);
+// printf(" z : %d [%02d][%02d][%02d] offset value~\n", (*z)/3, pal[(*z)], pal[(*z)+1], pal[(*z)+2]);
+//++++ (*i)--;
+// (*z)--;
+ //expand dong here
+/*
+planned features that i plan to implement~
+image that has values on the pallete list!
+wwww
+no... wait.... no wwww
+*/
+ //for(zzii=0; zzii<3; zzii++)
+ //{
+ //printf("z+q: %d\n\n", ((*z)+(*q)));
+ a[(((*z)+(*q)))]=zz;
+ //}
+ (*aa)=(((*z)+(*q)));
+ printf("!! a[%02d]: %d\n", (((*z)+(*q))/3), zz/3);
+// printf("\n aa: %d\n\n", (*aa));
+// printf(" a[%02d]=(%02d) offset array i think the palette should be updated again~\n", ((*z)+(*q))/3, a[((*z)+(*q))/3]);
+// printf("wwwwwwwwwwwwwwww\n\n");
+ }
+ /*else
+ {
+ printf("================\n");
+ printf("zq: %d [%02d][%02d][%02d]\n", ((*z)+(*q))/3, pal[((*z)+(*q))], pal[((*z)+(*q))+1], pal[((*z)+(*q))+2]);
+ printf("zz: %d [%02d][%02d][%02d]\n", (zz)/3, pal[zz], pal[zz+1], pal[zz+2]);
+ printf("z : %d [%02d][%02d][%02d]\n", (*z)/3, pal[(*z)], pal[(*z)+1], pal[(*z)+2]);
+ printf("================\n");
+ }*/
+ //printf("[%d]", (zz+q));
+ }
+ }
+ }
+ printf("wwwwwwwwwwwwwwww\n");
+ printf("2 (*z): %d\n", (*z)/3);
+ printf("2 (*i): %d\n", (*i)/3);
+// printf("2 offset of color in palette (*q): %d\n", (*q)/3);
+ printf("chkcolor end~\n");
+ free(pal);
+}
+
+void
+modexWaitBorder() {
+ while(inp(INPUT_STATUS_1) & 8) {
+ /* spin */
+ }
+
+ while(!(inp(INPUT_STATUS_1) & 8)) {
+ /* spin */
+ }
+}
+
+/*****************************************************************************
+find 8x8 font in VGA BIOS ROM
+*****************************************************************************/
+byte far *bios_8x8_font(void)
+{
+ byte far *font;
+ regs_t regs;
+
+/* use BIOS INT 10h AX=1130h to find font #3 (8x8) in ROM */
+ memset(®s, 0, sizeof(regs)); /* for Watcom C */
+ regs.w.ax = 0x1130;
+ regs.w.bx = 0x0300;
+ intr(0x10, ®s);
+ font = (byte far *)MK_FP(regs.w.es, regs.w.bp);
+ return font;
+}
+
+/*****************************************************************************
+*****************************************************************************/
+void bputs(page_t *pee, int x, int y, const byte far *s)
+{
+ //int i, skip;
+ byte far *font;
+ byte far *font_pntr;
+ //byte c, temp;
+
+ font = bios_8x8_font();
+ //skip = 2 - ((pee->width/4) << 3);
+ //printf("font=%Fp\n", font);
+ for(; *s != '\0'; s++)
+ {
+ //src.raster = font + 8 * (*s);
+ //BLOODY!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!111111111111!!!11!!11!111!11!!1111!!111!11!!1!!!11!11!!1!!111!11!!
+// (*(bmp->data)) = (*(font + 8 * (*s)));
+ font_pntr = font + 8 * (*s);
+// font_pntr = font + (c << 3);
+// i=8;
+// while (i--) {
+// temp = *font_pntr++;
+// outpw(SC_INDEX, text_mask[temp & 0x0F]);
+ //*vga_ptr++ = color;
+
+// outpw(SC_INDEX, text_mask[temp >> 4]);
+ //*vga_ptr-- = color;
+ //vga_ptr += widthBytes;
+// }
+
+ //printf("fontoffset=%Fp\n", font + 8 * (*s));
+ //printf("*fontoffset=%s\n", *(font + 8 * (*s)));
+ //printf("w.data=%Fp\n", (w.data));
+ //printf("*w.data=%s\n", *(w.data));
+ //blit1(&src, bmp, x, y);
+// modexDrawSprite(page, x, y, bmp);
+// modexDrawBmp(page, x, y, bmp);
+// printf("%x\n", (*(font + 8 * (*s))));
+ //_fmemset(VGA, *(font + 8 * (*s)), _msize(font));
+ //draw text?!?! wwww
+
+ modexClearRegion(pee, x, y, 8, 8, 4);
+// x += 8;
+ }
+// printf("\n");
+}
projects / 16.git / blobdiff