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/* $XConsortium: dwg.c /main/2 1996/10/28 06:57:55 kaleb $ */
/* $XFree86: xc/programs/Xserver/hw/xfree86/drivers/mga/util/stormdwg.c,v 1.1 1997/04/12 14:11:29 hohndel Exp $ */
#include <stdio.h>
#include <stdlib.h>
char *opcodes[] = {
"line_open", /* 0000 */
"autoline_open", /* 0001 */
"line_close", /* 0010 */
"autoline_close", /* 0011 */
"trapezoid", /* 0100 */
"trapezoid texture map", /* 0101 */
"reserved trap", /* 0110 */
"reserved trap", /* 0111 */
"bitblt", /* 1000 */
"iload", /* 1001 */
"reserved", /* 1010 */
"reserved", /* 1011 */
"fbitblt", /* 1100 */
"iload scale", /* 1101 */
"reserved", /* 1110 */
"iload filter" /* 1111 */
};
char *atype[] = {
"rpl - Write (Replace)", /* 000 */
"rstr - read-modify-write (raster)", /* 001 */
"reserved", /* 010 */
"z1 - depth mode with gouraud", /* 011 */
"blk - block write mode", /* 100 */
"reserved", /* 101 */
"reserved", /* 110 */
"I - Gouraud (with depth compare)" /* 111 */
};
char *zmode[] = {
"NOZCMP - always", /* 000 */
"reserved", /* 001 */
"ZE - depth =", /* 010 */
"zne - depth !=", /* 011 */
"zlt", /* 100 */
"zlte", /* 101 */
"zgt", /* 110 */
"zgte" /* 111 */
};
char *bop[] = {
"0", /* 0000 */
"~(D|S)", /* 0001 */
"D & ~S", /* 0010 */
"~S", /* 0011 */
"(~D) & S", /* 0100 */
"~D", /* 0101 */
"D ^ S", /* 0110 */
"~ (D & S)", /* 0111 */
"D & S", /* 1000 */
"~(D^S)", /* 1001 */
"D", /* 1010 */
"D | ~S", /* 1011 */
"S", /* 1100 */
"(~D) | S", /* 1101 */
"D | S", /* 1110 */
"1" /* 1111 */
};
char *bitmod[] = {
"BMONOLEF - Source is mono, or if iload, source is little endian", /* 0000 */
"BPLAN - source is mono from one plane", /* 0001 */
"BFCOL - source is colour, and is formatted from host", /* 0010 */
"BU32BGR - source is colour. For ILOAD, it's in 32bpp, BGR format", /* 0011 */
"BMONOWEF - source is mono, or if iload, source is windows format", /* 0100 */
"error! no such mode", /* 0101 */
"error! no such mode", /* 0110 */
"BU32RGB - source is colour, or if iload, source is 32 bpp RGB", /* 0111 */
"error! no such mode", /* 1000 */
"error! no such mode", /* 1001 */
"error! no such mode", /* 1010 */
"BU24BGR - source is colour, of if iload, source is 24 bpp BGR", /* 1011 */
"error! no such mode", /* 1100 */
"error! no such mode", /* 1101 */
"BUYUV - source is color, or for ILOAD, it's in 4:2:2 YUV format", /* 1110 */
"BU24RGB - source is color, or for ILOAD, it's in 24 bpp RGB" /* 1111 */
};
int main(int argc, char **argv)
{
unsigned long val, tmp;
if ( argc != 2 )
{
fprintf(stderr, "usage: %s hexval\n", argv[0]);
return 1;
}
val = strtoul(argv[1], NULL, 16);
printf("the val is : %lu\n", val);
/* opcode */
tmp = val & 0x0f;
printf("opcode: %s\n", opcodes[tmp]);
tmp = ( val >> 4 ) & 0x7;
printf("atype: %s\n", atype[tmp]);
if ( val & 128 )
printf("xy bitblt\n");
else
printf("linear bitblt\n");
tmp = ( val >> 8 ) & 7;
printf("zmode: %s\n", zmode[tmp]);
if ( val & ( 1 << 11 ) )
printf("solid line or constant trapezoid\n");
else
printf("src0 - 3 may need to be loaded");
if ( val & ( 1 << 12 ))
printf("ar0-ar6 = 0\n");
else
printf("you may need to set ar0-6.\n");
if ( val & ( 1 << 13 ))
printf("sgn = 0\n");
else
printf("sgn is not affected\n");
if ( val & ( 1 << 14 ))
printf("shift = 0\n");
else
printf("shift is not affected\n");
tmp = (val>>16) & 0x0f;
if ( ((val >> 4) & 7) == 4 && tmp != 0x0c )
printf("Error! Block (BLK) atype and non-source binary op chosen. Replace (S) bop will be used.\n");
printf("bop = %s, where ~ = bitwise complement, ^ = xor\n", bop[tmp]);
if ( ((val >> 20) & 0x0f) == 0 )
printf("opaque object\n");
else
printf("partially opaque object\n");
tmp = (val >> 25) & 0x0f;
printf("bitmod: %s\n", bitmod[tmp]);
if ((val >> 29) & 0x01)
printf("patterning enabled\n");
else
printf("patterning disabled\n");
if ((val >> 30) & 0x01)
printf("background colour is transparent\n");
else
printf("background colour is opaque\n");
return 0;
}
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