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#define EXPAND_BIT(_dsttype, _bit) (~(((_dsttype)(_bit))-1))
#define DEF_CONVMASK(_bpp, _type) \
static void convmask ## _bpp(CURSORSHAPE *lpCursor, DWORD cbWidth, void *src, void *dst) { \
int x, y, xb, x8; \
BYTE pix8; \
for(y = 0; y < lpCursor->cy; y++) { \
_type *ptr = (_type *)(((DWORD*)dst)+CURSOR_DMAX*y); \
for(x = 0; x < cbWidth; x++) { \
pix8 = ((BYTE *)src)[cbWidth*y + x]; \
x8 = x*8; \
for(xb = 7; xb >= 0 && x8 < lpCursor->cx; xb--,x8++) { \
*(ptr++) = EXPAND_BIT(_type, ((pix8 >> xb) & 0x1)); \
} } } }
//DEF_CONVMASK( 8, BYTE)
//DEF_CONVMASK(16, WORD)
DEF_CONVMASK(32, DWORD)
static void expandmask16(CURSORSHAPE *lpCursor, DWORD cbWidth, void *src, void *dst)
{
LONG y, x;
WORD px16;
pixel_32_t px;
px.dw = 0;
for(y = 0; y < lpCursor->cy; y++)
{
DWORD *ptr = ((DWORD*)dst)+CURSOR_DMAX*y;
for(x = 0; x < cbWidth; x += 2)
{
px16 = *((WORD*)(((BYTE*)src)+cbWidth*y + x*2));
px.c.r = px16 >> 11;
px.c.g = (px16 >> 5) & 0xFC;
px.c.b = px16 & 0xF8;
/* expand by last 2 LSB bits */
if((px.c.r & 0x18) == 0x18) px.c.r |= 0x7;
if((px.c.g & 0x0C) == 0x0C) px.c.r |= 0x3;
if((px.c.b & 0x18) == 0x18) px.c.b |= 0x7;
*ptr = px.dw;
ptr++;
}
}
}
static void expandmask15(CURSORSHAPE *lpCursor, DWORD cbWidth, void *src, void *dst)
{
LONG y, x;
WORD px16;
pixel_32_t px;
px.dw = 0;
for(y = 0; y < lpCursor->cy; y++)
{
DWORD *ptr = ((DWORD*)dst)+CURSOR_DMAX*y;
for(x = 0; x < cbWidth; x+= 2)
{
px16 = *((WORD*)(((BYTE*)src)+cbWidth*y + x));
px.c.r = (px16 >> 10) & 0xF8;
px.c.g = (px16 >> 5) & 0xF8;
px.c.b = px16 & 0xF8;
/* expand by last 2 LSB bits */
if((px.c.r & 0x18) == 0x18) px.c.r |= 0x7;
if((px.c.g & 0x18) == 0x18) px.c.r |= 0x7;
if((px.c.b & 0x18) == 0x18) px.c.b |= 0x7;
*ptr = px.dw;
ptr++;
}
}
}
static void expandmask8(CURSORSHAPE *lpCursor, DWORD cbWidth, void *src, void *dst)
{
LONG y, x;
for(y = 0; y < lpCursor->cy; y++)
{
DWORD *ptr = ((DWORD*)dst)+CURSOR_DMAX*y;
for(x = 0; x < cbWidth; x++)
{
BYTE index = ((BYTE*)src)[cbWidth*y + x];
*ptr = wram->palette[index].dw;
ptr++;
}
}
}
static void expandmask24(CURSORSHAPE *lpCursor, DWORD cbWidth, void *src, void *dst)
{
LONG y, x;
pixel_32_t px;
px.dw = 0;
for(y = 0; y < lpCursor->cy; y++)
{
DWORD *ptr = ((DWORD*)dst)+CURSOR_DMAX*y;
for(x = 0; x < cbWidth; x += 3)
{
px.c.r = ((BYTE*)src)[cbWidth*y + x];
px.c.g = ((BYTE*)src)[cbWidth*y + x + 1];
px.c.b = ((BYTE*)src)[cbWidth*y + x + 2];
*ptr = px.dw;
ptr++;
}
}
}
static void expandmask32(CURSORSHAPE *lpCursor, DWORD cbWidth, void *src, void *dst)
{
LONG y, x;
for(y = 0; y < lpCursor->cy; y++)
{
DWORD *ptr = ((DWORD*)dst)+CURSOR_DMAX*y;
for(x = 0; x < cbWidth; x += 4)
{
*ptr = *((DWORD*)(((BYTE*)src)+cbWidth*y + x));
ptr++;
}
}
}
static void expandmask(CURSORSHAPE *lpCursor, DWORD cbWidth, void *src, void *dst, int bits)
{
switch(bits)
{
case 1:
convmask32(lpCursor, cbWidth, src, dst);
break;
case 8:
expandmask8(lpCursor, cbWidth, src, dst);
break;
case 15:
expandmask15(lpCursor, cbWidth, src, dst);
break;
case 16:
expandmask16(lpCursor, cbWidth, src, dst);
break;
case 24:
expandmask24(lpCursor, cbWidth, src, dst);
break;
case 32:
expandmask32(lpCursor, cbWidth, src, dst);
break;
}
}
static BOOL cursor_is_empty()
{
LONG x, y;
for(y = 0; y < wram->regs.s.cursor_h; y++)
{
for(x = 0; x < wram->regs.s.cursor_w; x++)
{
if(wram->cursor.andmask[CURSOR_DMAX*y + x] != 0xFF ||
wram->cursor.xormask[CURSOR_DMAX*y + x] != 0x00)
{
return FALSE;
}
}
}
return TRUE;
}
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