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Cirrus transparent BITBLT (w/o color expand), by Hitoshi Osada.

Browse source 
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3101 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
ths 2007-07-31 23:26:00 +00:00
parent 2bb081f7a0
commit 96cf2df87c
2 changed files with 172 additions and 10 deletions
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102
hw/cirrus_vga_rop.h
View file

@ -62,6 +62,108 @@ glue(cirrus_bitblt_rop_bkwd_, ROP_NAME)(CirrusVGAState *s,
}
}
static void
glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
{
int x,y;
uint8_t p;
dstpitch -= bltwidth;
srcpitch -= bltwidth;
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x++) {
p = *dst;
ROP_OP(p, *src);
if (p != s->gr[0x34]) *dst = p;
dst++;
src++;
}
dst += dstpitch;
src += srcpitch;
}
}
static void
glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_8)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
{
int x,y;
uint8_t p;
dstpitch += bltwidth;
srcpitch += bltwidth;
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x++) {
p = *dst;
ROP_OP(p, *src);
if (p != s->gr[0x34]) *dst = p;
dst--;
src--;
}
dst += dstpitch;
src += srcpitch;
}
}
static void
glue(glue(cirrus_bitblt_rop_fwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
{
int x,y;
uint8_t p1, p2;
dstpitch -= bltwidth;
srcpitch -= bltwidth;
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x+=2) {
p1 = *dst;
p2 = *(dst+1);
ROP_OP(p1, *src);
ROP_OP(p2, *(src+1));
if ((p1 != s->gr[0x34]) || (p2 != s->gr[0x35])) {
*dst = p1;
*(dst+1) = p2;
}
dst+=2;
src+=2;
}
dst += dstpitch;
src += srcpitch;
}
}
static void
glue(glue(cirrus_bitblt_rop_bkwd_transp_, ROP_NAME),_16)(CirrusVGAState *s,
uint8_t *dst,const uint8_t *src,
int dstpitch,int srcpitch,
int bltwidth,int bltheight)
{
int x,y;
uint8_t p1, p2;
dstpitch += bltwidth;
srcpitch += bltwidth;
for (y = 0; y < bltheight; y++) {
for (x = 0; x < bltwidth; x+=2) {
p1 = *(dst-1);
p2 = *dst;
ROP_OP(p1, *(src-1));
ROP_OP(p2, *src);
if ((p1 != s->gr[0x34]) || (p2 != s->gr[0x35])) {
*(dst-1) = p1;
*dst = p2;
}
dst-=2;
src-=2;
}
dst += dstpitch;
src += srcpitch;
}
}
#define DEPTH 8
#include "cirrus_vga_rop2.h"