2 * Functions for handling modex and doing other basic graphics stuff.
7 #include "src\lib\types.h"
8 #include "src\lib\bitmap.h"
9 #include "src\lib\planar.h"
11 /* -========================== Types & Macros ==========================- */
12 #define PAGE_OFFSET(x,y) (((y)<<6)+((y)<<4)+((x)>>2))
13 #define PLANE(x) (1<< (x&3))
14 #define SELECT_ALL_PLANES() outpw(0x03c4, 0xff02)
17 byte far* data; /* the data for the page */
18 word dx; /* col we are viewing on the virtual screen */
19 word dy; /* row we are viewing on the virtual screen */
20 word width; /* virtual width of the page */
21 word height; /* virtual height of the page */
24 /* -============================ Functions =============================- */
25 /* mode switching, page, and plane functions */
28 page_t modexDefaultPage();
29 page_t modexNextPage(page_t *p);
30 void modexShowPage(page_t *page);
31 void modexPanPage(page_t *page, int dx, int dy);
32 void modexSelectPlane(byte plane);
33 void modexClearRegion(page_t *page, int x, int y, int w, int h, byte color);
34 void modexDrawBmp(page_t *page, int x, int y, bitmap_t *bmp);
35 void modexDrawBmpRegion(page_t *page, int x, int y, int rx, int ry, int rw, int rh, bitmap_t *bmp);
36 void modexDrawPlanarBuf(page_t *page, int x, int y, planar_buf_t *bmp);
37 void modexDrawSprite(page_t *page, int x, int y, bitmap_t *bmp);
38 void modexDrawSpriteRegion(page_t *page, int x, int y, int rx, int ry, int rw, int rh, bitmap_t *bmp);
39 void modexCopyPageRegion(page_t *dest, page_t *src, word sx, word sy, word dx, word dy, word width, word height);
41 /* Palette fade and flash effects */
42 void modexFadeOn(word fade, byte *palette);
43 void modexFadeOff(word fade, byte *palette);
44 void modexFlashOn(word fade, byte *palette);
45 void modexFlashOff(word fade, byte *palette);
47 /* palette loading and saving */
48 void modexPalSave(byte *palette);
50 void modexLoadPalFile(char *filename, byte **palette);
51 void modexSavePalFile(char *filename, byte *palette);
53 /* fixed palette functions */
57 /* utility functions */
58 void modexPalUpdate(bitmap_t *bmp, word *i, word qp);
59 void modexPalUpdate2(byte *p);
60 void modexWaitBorder();
62 /* -======================= Constants & Vars ==========================- */
63 extern byte far* VGA; /* The VGA Memory */
64 #define SCREEN_SEG 0xa000
65 #define VIDEO_INT 0x10
67 #define VGA_256_COLOR_MODE 0x13
68 #define TEXT_MODE 0x03
69 #define SCREEN_WIDTH 320
70 #define SCREEN_HEIGHT 240
71 #define PAGE_SIZE (word)(SCREEN_WIDTH/4 * SCREEN_HEIGHT)
73 #define AC_INDEX 0x03c0
74 #define SC_INDEX 0x03c4
75 #define SC_DATA 0x03c5
76 #define CRTC_INDEX 0x03d4
77 #define CRTC_DATA 0x03d5
78 #define GC_INDEX 0x03ce
79 #define MISC_OUTPUT 0x03c2
80 #define HIGH_ADDRESS 0x0C
81 #define LOW_ADDRESS 0x0D
83 #define INPUT_STATUS_1 0x03da
84 #define DISPLAY_ENABLE 0x01
86 #define PAL_READ_REG 0x03C7 /* Color register, read address */
87 #define PAL_WRITE_REG 0x03C8 /* Color register, write address */
88 #define PAL_DATA_REG 0x03C9 /* Color register, data port */
89 #define PAL_SIZE (256 * 3)