| 0,0 → 1,87 |
|---|
| /* |
| * a few functions for mode 12h programming (640x480 4bpp) |
| * |
| * This file is part of the Mateusz' DOS Routines (MDR): http://mdr.osdn.io |
| * Published under the terms of the MIT License, as stated below. |
| * |
| * Copyright (C) 2022-2023 Mateusz Viste |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to |
| * deal in the Software without restriction, including without limitation the |
| * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or |
| * sell copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #ifndef MDR_VID12_H |
| |
| #define MDR_VID12_H |
| |
| /* init video mode 12h (640x480x16c) |
| * remember to call vid12_close() at exit time */ |
| void vid12_init(void); |
| |
| /* wait until VBLANK */ |
| void vid12_waitvblank(void); |
| |
| /* wait until ANY blank: either VBLANK or HBLANK */ |
| void vid12_waitblank(void); |
| |
| /* clear screen using color |
| * this function is fastest when color is 0 or 15 */ |
| void vid12_cls(unsigned char color); |
| |
| /* clear a single scanline (0..479) with a solid color (0..15) |
| * this function is fastest when color is 0 or 15 */ |
| void vid12_clrline(unsigned short line, unsigned char color); |
| |
| /* fill lines from linefirst to linelast with an 8 pixels pattern |
| * linelast must be equal to or greater than linelast |
| * pattern must be 8 bytes long */ |
| void vid12_linepat(unsigned short linefirst, unsigned short linelast, const unsigned char *pattern); |
| |
| /* deinit video mode 12h and resets to previous mode */ |
| void vid12_close(void); |
| |
| /* puts a pixel on screen */ |
| void vid12_putpixel(unsigned short x, unsigned short y, unsigned char col); |
| |
| /* draws a horizonatal line from [x1,y] to [x2,y] */ |
| void vid12_hline(unsigned short y, unsigned short x1, unsigned short x2, unsigned char color); |
| |
| /* write an entire scanline (640 pixels) to screen. the pixels data must be |
| * a serie of 640 bytes having values in the range [0..15] */ |
| void vid12_putscanline(unsigned short scanline, const unsigned char *pixels); |
| |
| /* set index palette color to given R,G,B value. each R,G,B component must be |
| * a 6 bit value in the range [0..63] (where 63 is the maximum luminosity) */ |
| void vid12_setpalette(unsigned char index, unsigned char r, unsigned char g, unsigned char b); |
| |
| /***************************** |
| * VRAM TO VRAM operations * |
| *****************************/ |
| |
| /* prepares VGA for a VRAM-to-VRAM copy operation */ |
| void vid12_vramcpy_prep(void); |
| |
| /* fast (VRAM-to-VRAM) copy of a scanline (0..479) to another scanline. |
| * vid12_vramcpy_prep() must be called before and vid12_vramcpy_done must be |
| * called after one or more vid12_vramcpy_scanline() calls. */ |
| void vid12_vramcpy_scanline(unsigned short dst, unsigned short src); |
| |
| /* sets VGA back to its normal state after VRAM-to-VRAM operations */ |
| void vid12_vramcpy_done(void); |
| |
| #endif |