1 /*****************************************************************************/
5 /* TGI kernel interface */
9 /* (C) 2002 Ullrich von Bassewitz */
11 /* D-70597 Stuttgart */
12 /* EMail: uz@musoftware.de */
15 /* This software is provided 'as-is', without any expressed or implied */
16 /* warranty. In no event will the authors be held liable for any damages */
17 /* arising from the use of this software. */
19 /* Permission is granted to anyone to use this software for any purpose, */
20 /* including commercial applications, and to alter it and redistribute it */
21 /* freely, subject to the following restrictions: */
23 /* 1. The origin of this software must not be misrepresented; you must not */
24 /* claim that you wrote the original software. If you use this software */
25 /* in a product, an acknowledgment in the product documentation would be */
26 /* appreciated but is not required. */
27 /* 2. Altered source versions must be plainly marked as such, and must not */
28 /* be misrepresented as being the original software. */
29 /* 3. This notice may not be removed or altered from any source */
32 /*****************************************************************************/
41 /*****************************************************************************/
43 /*****************************************************************************/
47 /* A structure that describes the header of a graphics driver loaded into
52 /* Data that describes the capabilities of the driver */
53 char id[3]; /* Contains 0x74, 0x67, 0x69 ("tgi") */
54 unsigned char version; /* Interface version */
55 unsigned xres; /* X resolution */
56 unsigned yres; /* Y resolution */
57 unsigned char colorcount; /* Number of available colors */
58 unsigned char pagecount; /* Number of screens available */
59 unsigned char error; /* Error code */
60 unsigned char res[5]; /* Reserved for extensions */
62 /* Jump vectors. Note that these are not C callable */
63 void* install; /* INSTALL routine */
64 void* deinstall; /* DEINSTALL routine */
65 void* init; /* INIT routine */
66 void* done; /* DONE routine */
67 void* control; /* CONTROL routine */
68 void* clear; /* CLEAR routine */
69 void* setviewpage; /* SETVIEWPAGE routine */
70 void* setdrawpage; /* SETDRAWPAGE routine */
71 void* setcolor; /* SETCOLOR routine */
72 void* setpixel; /* SETPIXEL routine */
73 void* getpixel; /* GETPIXEL routine */
74 void* line; /* LINE routine */
75 void* bar; /* BAR routine */
76 void* circle; /* CIRCLE routine */
82 /* TGI kernel variables */
83 extern tgi_drv_header* tgi_drv; /* Pointer to driver */
84 extern unsigned char tgi_error; /* Last error code */
85 extern unsigned char tgi_mode; /* Graphics mode or zero */
86 extern int tgi_curx; /* Current drawing cursor X */
87 extern int tgi_cury; /* Current drawing cursor Y */
88 extern unsigned char tgi_color; /* Current drawing color */
89 extern unsigned tgi_xres; /* X resolution of the current mode */
90 extern unsigned tgi_yres; /* Y resolution of the current mode */
91 extern unsigned char tgi_colorcount; /* Number of available colors */
92 extern unsigned char tgi_pagecount; /* Number of available screens */
96 /*****************************************************************************/
98 /*****************************************************************************/
102 const char* __fastcall__ tgi_map_mode (unsigned char mode);
103 /* Map a tgi mode to a driver name. Returns NULL if no driver available. */
105 void __fastcall__ tgi_setup (void);
106 /* Setup the driver and graphics kernel once the driver is loaded */
110 /* End of tgi-kernel.h */