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/*
* Mesa 3-D graphics library
* Version: 4.0
*
* Copyright (C) 1999 Brian Paul All Rights Reserved.
*
* 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
* BRIAN PAUL 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.
*/
/*
* DOS/DJGPP device driver v0.1 for Mesa 4.0
*
* Copyright (C) 2002 - Borca Daniel
* Email : dborca@yahoo.com
* Web : http://www.geocities.com/dborca
*/
#ifndef DVESA_H_included
#define DVESA_H_included
typedef unsigned char word8;
typedef unsigned short word16;
typedef unsigned long word32;
struct dvmode;
extern int (*dv_color) (const unsigned char rgba[]);
extern void (*dv_dump_virtual) (void *buffer, int width, int height, int offset, int delta);
extern void (*dv_clear_virtual) (void *buffer, int len, int color);
struct dvmode *dv_select_mode (int x, int y, int width, int height, int depth, int *delta, int *offset);
void dv_fillrect (void *buffer, int bwidth, int x, int y, int width, int height, int color);
/*
* not so public...
*/
extern int _rgb_scale_5[32];
extern int _rgb_scale_6[64];
/*
* dv_putpixel inlines
*/
#define dv_putpixel15 dv_putpixel16
extern __inline__ void dv_putpixel16 (void *buffer, int offset, int color)
{
((word16 *)buffer)[offset] = (word16)color;
}
extern __inline__ void dv_putpixel24 (void *buffer, int offset, int color)
{
*(word16 *)(buffer+offset*3) = (word16)color;
*(word8 *)(buffer+offset*3+2) = (word8)(color>>16);
}
extern __inline__ void dv_putpixel32 (void *buffer, int offset, int color)
{
((word32 *)buffer)[offset] = color;
}
/*
* dv_color inlines
*/
extern __inline__ int dv_color15 (const unsigned char rgba[])
{
return ((rgba[0]>>3)<<10)|((rgba[1]>>3)<<5)|(rgba[2]>>3);
}
extern __inline__ int dv_color16 (const unsigned char rgba[])
{
return ((rgba[0]>>3)<<11)|((rgba[1]>>2)<<5)|(rgba[2]>>3);
}
#define dv_color24 dv_color32
extern __inline__ int dv_color32 (const unsigned char rgba[])
{
return (rgba[0]<<16)|(rgba[1]<<8)|(rgba[2]);
}
/*
* dv_getrgba inlines
*/
extern __inline__ void dv_getrgba15 (void *buffer, int offset, unsigned char rgba[4])
{
int c = ((word16 *)buffer)[offset];
rgba[0] = _rgb_scale_5[(c >> 10) & 0x1F];
rgba[1] = _rgb_scale_5[(c >> 5) & 0x1F];
rgba[2] = _rgb_scale_5[c & 0x1F];
rgba[3] = 255;
}
extern __inline__ void dv_getrgba16 (void *buffer, int offset, unsigned char rgba[4])
{
int c = ((word16 *)buffer)[offset];
rgba[0] = _rgb_scale_5[(c >> 11) & 0x1F];
rgba[1] = _rgb_scale_6[(c >> 5) & 0x3F];
rgba[2] = _rgb_scale_5[c & 0x1F];
rgba[3] = 255;
}
extern __inline__ void dv_getrgba24 (void *buffer, int offset, unsigned char rgba[4])
{
int c = *(word32 *)(buffer+offset*3);
rgba[0] = c >> 16;
rgba[1] = c >> 8;
rgba[2] = c;
rgba[3] = 255;
}
extern __inline__ void dv_getrgba32 (void *buffer, int offset, unsigned char rgba[4])
{
int c = ((word32 *)buffer)[offset];
rgba[0] = c >> 16;
rgba[1] = c >> 8;
rgba[2] = c;
rgba[3] = 255;
}
#endif
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