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tmem.c
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tmem.c
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#ifdef N64VIDEO_C
#define tmem16 ((uint16_t*)wstate->tmem)
#define tc16 ((uint16_t*)wstate->tmem)
#define tlut ((uint16_t*)(&wstate->tmem[0x800]))
static uint8_t replicated_rgba[32];
#define GET_LOW_RGBA16_TMEM(x) (replicated_rgba[((x) >> 1) & 0x1f])
#define GET_MED_RGBA16_TMEM(x) (replicated_rgba[((x) >> 6) & 0x1f])
#define GET_HI_RGBA16_TMEM(x) (replicated_rgba[(x) >> 11])
static void sort_tmem_idx(uint32_t *idx, uint32_t idxa, uint32_t idxb, uint32_t idxc, uint32_t idxd, uint32_t bankno)
{
if ((idxa & 3) == bankno)
*idx = idxa & 0x3ff;
else if ((idxb & 3) == bankno)
*idx = idxb & 0x3ff;
else if ((idxc & 3) == bankno)
*idx = idxc & 0x3ff;
else if ((idxd & 3) == bankno)
*idx = idxd & 0x3ff;
else
*idx = 0;
}
static void sort_tmem_shorts_lowhalf(uint32_t* bindshort, uint32_t short0, uint32_t short1, uint32_t short2, uint32_t short3, uint32_t bankno)
{
switch(bankno)
{
case 0:
*bindshort = short0;
break;
case 1:
*bindshort = short1;
break;
case 2:
*bindshort = short2;
break;
case 3:
*bindshort = short3;
break;
}
}
static void compute_color_index(struct rdp_state* wstate, uint32_t* cidx, uint32_t readshort, uint32_t nybbleoffset, uint32_t tilenum)
{
uint32_t lownib, hinib;
if (wstate->tile[tilenum].size == PIXEL_SIZE_4BIT)
{
lownib = (nybbleoffset ^ 3) << 2;
hinib = wstate->tile[tilenum].palette;
}
else
{
lownib = ((nybbleoffset & 2) ^ 2) << 2;
hinib = lownib ? ((readshort >> 12) & 0xf) : ((readshort >> 4) & 0xf);
}
lownib = (readshort >> lownib) & 0xf;
*cidx = (hinib << 4) | lownib;
}
static INLINE void fetch_texel(struct rdp_state* wstate, struct color *color, int s, int t, uint32_t tilenum)
{
uint32_t tbase = wstate->tile[tilenum].line * (t & 0xff) + wstate->tile[tilenum].tmem;
uint32_t tpal = wstate->tile[tilenum].palette;
uint32_t taddr = 0;
switch (wstate->tile[tilenum].f.notlutswitch)
{
case TEXEL_RGBA4:
{
taddr = ((tbase << 4) + s) >> 1;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
uint8_t byteval, c;
byteval = wstate->tmem[taddr & 0xfff];
c = ((s & 1)) ? (byteval & 0xf) : (byteval >> 4);
c |= (c << 4);
color->r = c;
color->g = c;
color->b = c;
color->a = c;
}
break;
case TEXEL_RGBA8:
{
taddr = (tbase << 3) + s;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
uint8_t p;
p = wstate->tmem[taddr & 0xfff];
color->r = p;
color->g = p;
color->b = p;
color->a = p;
}
break;
case TEXEL_RGBA16:
{
taddr = (tbase << 2) + s;
taddr ^= ((t & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR);
uint16_t c;
c = tc16[taddr & 0x7ff];
color->r = GET_HI_RGBA16_TMEM(c);
color->g = GET_MED_RGBA16_TMEM(c);
color->b = GET_LOW_RGBA16_TMEM(c);
color->a = (c & 1) ? 0xff : 0;
}
break;
case TEXEL_RGBA32:
{
taddr = (tbase << 2) + s;
taddr ^= ((t & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR);
uint16_t c;
taddr &= 0x3ff;
c = tc16[taddr];
color->r = c >> 8;
color->g = c & 0xff;
c = tc16[taddr | 0x400];
color->b = c >> 8;
color->a = c & 0xff;
}
break;
case TEXEL_YUV4:
{
taddr = (tbase << 3) + s;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
int32_t u, save;
save = wstate->tmem[taddr & 0x7ff];
save &= 0xf0;
save |= (save >> 4);
u = save - 0x80;
color->r = u;
color->g = u;
color->b = save;
color->a = save;
}
break;
case TEXEL_YUV8:
{
taddr = (tbase << 3) + s;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
int32_t u, save;
save = u = wstate->tmem[taddr & 0x7ff];
u = u - 0x80;
color->r = u;
color->g = u;
color->b = save;
color->a = save;
}
break;
case TEXEL_YUV16:
{
taddr = (tbase << 3) + s;
int taddrlow = taddr >> 1;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
taddrlow ^= ((t & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR);
taddr &= 0x7ff;
taddrlow &= 0x3ff;
uint16_t c = tc16[taddrlow];
int32_t y, u, v;
y = wstate->tmem[taddr | 0x800];
u = c >> 8;
v = c & 0xff;
u = u - 0x80;
v = v - 0x80;
color->r = u;
color->g = v;
color->b = y;
color->a = y;
}
break;
case TEXEL_YUV32:
{
int taddrlow;
uint16_t c;
int32_t y, u, v;
taddr = (tbase << 3) + s;
taddrlow = taddr >> 1;
taddrlow ^= ((t & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR);
taddrlow &= 0x3ff;
c = tc16[taddrlow];
u = c >> 8;
v = c & 0xff;
u = u - 0x80;
v = v - 0x80;
color->r = u;
color->g = v;
if (s & 1)
{
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
taddr &= 0x7ff;
y = wstate->tmem[taddr | 0x800];
color->b = y;
color->a = y;
}
else
{
y = tc16[taddrlow | 0x400];
color->b = y >> 8;
color->a = ((y >> 8) & 0xf) | (y & 0xf0);
}
}
break;
case TEXEL_CI4:
{
taddr = ((tbase << 4) + s) >> 1;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
uint8_t p;
p = wstate->tmem[taddr & 0xfff];
p = (s & 1) ? (p & 0xf) : (p >> 4);
p = (uint8_t)(tpal << 4) | p;
color->r = color->g = color->b = color->a = p;
}
break;
case TEXEL_CI8:
{
taddr = (tbase << 3) + s;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
uint8_t p;
p = wstate->tmem[taddr & 0xfff];
color->r = p;
color->g = p;
color->b = p;
color->a = p;
}
break;
case TEXEL_CI16:
case TEXEL_CI32:
{
taddr = (tbase << 2) + s;
taddr ^= ((t & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR);
uint16_t c;
c = tc16[taddr & 0x7ff];
color->r = c >> 8;
color->g = c & 0xff;
color->b = color->r;
color->a = color->g;
}
break;
case TEXEL_IA4:
{
taddr = ((tbase << 4) + s) >> 1;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
uint8_t p, i;
p = wstate->tmem[taddr & 0xfff];
p = (s & 1) ? (p & 0xf) : (p >> 4);
i = p & 0xe;
i = (i << 4) | (i << 1) | (i >> 2);
color->r = i;
color->g = i;
color->b = i;
color->a = (p & 0x1) ? 0xff : 0;
}
break;
case TEXEL_IA8:
{
taddr = (tbase << 3) + s;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
uint8_t p, i;
p = wstate->tmem[taddr & 0xfff];
i = p & 0xf0;
i |= (i >> 4);
color->r = i;
color->g = i;
color->b = i;
color->a = ((p & 0xf) << 4) | (p & 0xf);
}
break;
case TEXEL_IA16:
{
taddr = (tbase << 2) + s;
taddr ^= ((t & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR);
uint16_t c;
c = tc16[taddr & 0x7ff];
color->r = color->g = color->b = (c >> 8);
color->a = c & 0xff;
}
break;
case TEXEL_IA32:
{
taddr = (tbase << 2) + s;
taddr ^= ((t & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR);
uint16_t c;
c = tc16[taddr & 0x7ff];
color->r = c >> 8;
color->g = c & 0xff;
color->b = color->r;
color->a = color->g;
}
break;
case TEXEL_I4:
{
taddr = ((tbase << 4) + s) >> 1;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
uint8_t byteval, c;
byteval = wstate->tmem[taddr & 0xfff];
c = (s & 1) ? (byteval & 0xf) : (byteval >> 4);
c |= (c << 4);
color->r = c;
color->g = c;
color->b = c;
color->a = c;
}
break;
case TEXEL_I8:
{
taddr = (tbase << 3) + s;
taddr ^= ((t & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR);
uint8_t c;
c = wstate->tmem[taddr & 0xfff];
color->r = c;
color->g = c;
color->b = c;
color->a = c;
}
break;
case TEXEL_I16:
case TEXEL_I32:
default:
{
taddr = (tbase << 2) + s;
taddr ^= ((t & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR);
uint16_t c;
c = tc16[taddr & 0x7ff];
color->r = c >> 8;
color->g = c & 0xff;
color->b = color->r;
color->a = color->g;
}
break;
}
}
static INLINE void fetch_texel_quadro(struct rdp_state* wstate, struct color *color0, struct color *color1, struct color *color2, struct color *color3, int s0, int sdiff, int t0, int tdiff, uint32_t tilenum, int unequaluppers)
{
uint32_t tbase0 = wstate->tile[tilenum].line * (t0 & 0xff) + wstate->tile[tilenum].tmem;
int t1 = (t0 & 0xff) + tdiff;
int s1 = s0 + sdiff;
uint32_t tbase2 = wstate->tile[tilenum].line * t1 + wstate->tile[tilenum].tmem;
uint32_t tpal = wstate->tile[tilenum].palette;
uint32_t xort, ands;
uint32_t taddr0, taddr1, taddr2, taddr3;
uint32_t taddrlow0, taddrlow1, taddrlow2, taddrlow3;
switch (wstate->tile[tilenum].f.notlutswitch)
{
case TEXEL_RGBA4:
{
taddr0 = ((tbase0 << 4) + s0) >> 1;
taddr1 = ((tbase0 << 4) + s1) >> 1;
taddr2 = ((tbase2 << 4) + s0) >> 1;
taddr3 = ((tbase2 << 4) + s1) >> 1;
xort = (t0 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr0 ^= xort;
taddr1 ^= xort;
xort = (t1 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr2 ^= xort;
taddr3 ^= xort;
uint32_t byteval, c;
taddr0 &= 0xfff;
taddr1 &= 0xfff;
taddr2 &= 0xfff;
taddr3 &= 0xfff;
ands = s0 & 1;
byteval = wstate->tmem[taddr0];
c = (ands) ? (byteval & 0xf) : (byteval >> 4);
c |= (c << 4);
color0->r = c;
color0->g = c;
color0->b = c;
color0->a = c;
byteval = wstate->tmem[taddr2];
c = (ands) ? (byteval & 0xf) : (byteval >> 4);
c |= (c << 4);
color2->r = c;
color2->g = c;
color2->b = c;
color2->a = c;
ands = s1 & 1;
byteval = wstate->tmem[taddr1];
c = (ands) ? (byteval & 0xf) : (byteval >> 4);
c |= (c << 4);
color1->r = c;
color1->g = c;
color1->b = c;
color1->a = c;
byteval = wstate->tmem[taddr3];
c = (ands) ? (byteval & 0xf) : (byteval >> 4);
c |= (c << 4);
color3->r = c;
color3->g = c;
color3->b = c;
color3->a = c;
}
break;
case TEXEL_RGBA8:
{
taddr0 = (tbase0 << 3) + s0;
taddr1 = (tbase0 << 3) + s1;
taddr2 = (tbase2 << 3) + s0;
taddr3 = (tbase2 << 3) + s1;
xort = (t0 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr0 ^= xort;
taddr1 ^= xort;
xort = (t1 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr2 ^= xort;
taddr3 ^= xort;
uint32_t p;
taddr0 &= 0xfff;
taddr1 &= 0xfff;
taddr2 &= 0xfff;
taddr3 &= 0xfff;
p = wstate->tmem[taddr0];
color0->r = p;
color0->g = p;
color0->b = p;
color0->a = p;
p = wstate->tmem[taddr2];
color2->r = p;
color2->g = p;
color2->b = p;
color2->a = p;
p = wstate->tmem[taddr1];
color1->r = p;
color1->g = p;
color1->b = p;
color1->a = p;
p = wstate->tmem[taddr3];
color3->r = p;
color3->g = p;
color3->b = p;
color3->a = p;
}
break;
case TEXEL_RGBA16:
{
taddr0 = (tbase0 << 2) + s0;
taddr1 = (tbase0 << 2) + s1;
taddr2 = (tbase2 << 2) + s0;
taddr3 = (tbase2 << 2) + s1;
xort = (t0 & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR;
taddr0 ^= xort;
taddr1 ^= xort;
xort = (t1 & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR;
taddr2 ^= xort;
taddr3 ^= xort;
uint32_t c0, c1, c2, c3;
taddr0 &= 0x7ff;
taddr1 &= 0x7ff;
taddr2 &= 0x7ff;
taddr3 &= 0x7ff;
c0 = tc16[taddr0];
c1 = tc16[taddr1];
c2 = tc16[taddr2];
c3 = tc16[taddr3];
color0->r = GET_HI_RGBA16_TMEM(c0);
color0->g = GET_MED_RGBA16_TMEM(c0);
color0->b = GET_LOW_RGBA16_TMEM(c0);
color0->a = (c0 & 1) ? 0xff : 0;
color1->r = GET_HI_RGBA16_TMEM(c1);
color1->g = GET_MED_RGBA16_TMEM(c1);
color1->b = GET_LOW_RGBA16_TMEM(c1);
color1->a = (c1 & 1) ? 0xff : 0;
color2->r = GET_HI_RGBA16_TMEM(c2);
color2->g = GET_MED_RGBA16_TMEM(c2);
color2->b = GET_LOW_RGBA16_TMEM(c2);
color2->a = (c2 & 1) ? 0xff : 0;
color3->r = GET_HI_RGBA16_TMEM(c3);
color3->g = GET_MED_RGBA16_TMEM(c3);
color3->b = GET_LOW_RGBA16_TMEM(c3);
color3->a = (c3 & 1) ? 0xff : 0;
}
break;
case TEXEL_RGBA32:
{
taddr0 = (tbase0 << 2) + s0;
taddr1 = (tbase0 << 2) + s1;
taddr2 = (tbase2 << 2) + s0;
taddr3 = (tbase2 << 2) + s1;
xort = (t0 & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR;
taddr0 ^= xort;
taddr1 ^= xort;
xort = (t1 & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR;
taddr2 ^= xort;
taddr3 ^= xort;
uint16_t c0, c1, c2, c3;
taddr0 &= 0x3ff;
taddr1 &= 0x3ff;
taddr2 &= 0x3ff;
taddr3 &= 0x3ff;
c0 = tc16[taddr0];
color0->r = c0 >> 8;
color0->g = c0 & 0xff;
c0 = tc16[taddr0 | 0x400];
color0->b = c0 >> 8;
color0->a = c0 & 0xff;
c1 = tc16[taddr1];
color1->r = c1 >> 8;
color1->g = c1 & 0xff;
c1 = tc16[taddr1 | 0x400];
color1->b = c1 >> 8;
color1->a = c1 & 0xff;
c2 = tc16[taddr2];
color2->r = c2 >> 8;
color2->g = c2 & 0xff;
c2 = tc16[taddr2 | 0x400];
color2->b = c2 >> 8;
color2->a = c2 & 0xff;
c3 = tc16[taddr3];
color3->r = c3 >> 8;
color3->g = c3 & 0xff;
c3 = tc16[taddr3 | 0x400];
color3->b = c3 >> 8;
color3->a = c3 & 0xff;
}
break;
case TEXEL_YUV4:
{
taddr0 = (tbase0 << 3) + s0;
taddr1 = (tbase0 << 3) + s1 + sdiff;
taddr2 = (tbase2 << 3) + s0;
taddr3 = (tbase2 << 3) + s1 + sdiff;
xort = (t0 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr0 ^= xort;
taddr1 ^= xort;
xort = (t1 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr2 ^= xort;
taddr3 ^= xort;
int32_t u0, u1, u2, u3, save0, save1, save2, save3;
save0 = wstate->tmem[taddr0 & 0x7ff];
save0 &= 0xf0;
save0 |= (save0 >> 4);
u0 = save0 - 0x80;
save1 = wstate->tmem[taddr1 & 0x7ff];
save1 &= 0xf0;
save1 |= (save1 >> 4);
u1 = save1 - 0x80;
save2 = wstate->tmem[taddr2 & 0x7ff];
save2 &= 0xf0;
save2 |= (save2 >> 4);
u2 = save2 - 0x80;
save3 = wstate->tmem[taddr3 & 0x7ff];
save3 &= 0xf0;
save3 |= (save3 >> 4);
u3 = save3 - 0x80;
color0->r = u0;
color0->g = u0;
color1->r = u1;
color1->g = u1;
color2->r = u2;
color2->g = u2;
color3->r = u3;
color3->g = u3;
if (unequaluppers)
{
color0->b = color0->a = save3;
color1->b = color1->a = save2;
color2->b = color2->a = save1;
color3->b = color3->a = save0;
}
else
{
color0->b = color0->a = save0;
color1->b = color1->a = save1;
color2->b = color2->a = save2;
color3->b = color3->a = save3;
}
}
break;
case TEXEL_YUV8:
{
taddr0 = (tbase0 << 3) + s0;
taddr1 = (tbase0 << 3) + s1 + sdiff;
taddr2 = (tbase2 << 3) + s0;
taddr3 = (tbase2 << 3) + s1 + sdiff;
xort = (t0 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr0 ^= xort;
taddr1 ^= xort;
xort = (t1 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr2 ^= xort;
taddr3 ^= xort;
int32_t u0, u1, u2, u3, save0, save1, save2, save3;
save0 = u0 = wstate->tmem[taddr0 & 0x7ff];
u0 = u0 - 0x80;
save1 = u1 = wstate->tmem[taddr1 & 0x7ff];
u1 = u1 - 0x80;
save2 = u2 = wstate->tmem[taddr2 & 0x7ff];
u2 = u2 - 0x80;
save3 = u3 = wstate->tmem[taddr3 & 0x7ff];
u3 = u3 - 0x80;
color0->r = u0;
color0->g = u0;
color1->r = u1;
color1->g = u1;
color2->r = u2;
color2->g = u2;
color3->r = u3;
color3->g = u3;
if (unequaluppers)
{
color0->b = color0->a = save3;
color1->b = color1->a = save2;
color2->b = color2->a = save1;
color3->b = color3->a = save0;
}
else
{
color0->b = color0->a = save0;
color1->b = color1->a = save1;
color2->b = color2->a = save2;
color3->b = color3->a = save3;
}
}
break;
case TEXEL_YUV16:
{
taddr0 = (tbase0 << 3) + s0;
taddr1 = (tbase0 << 3) + s1;
taddr2 = (tbase2 << 3) + s0;
taddr3 = (tbase2 << 3) + s1;
taddrlow0 = (taddr0) >> 1;
taddrlow1 = (taddr1 + sdiff) >> 1;
taddrlow2 = (taddr2) >> 1;
taddrlow3 = (taddr3 + sdiff) >> 1;
xort = (t0 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr0 ^= xort;
taddr1 ^= xort;
xort = (t1 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr2 ^= xort;
taddr3 ^= xort;
xort = (t0 & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR;
taddrlow0 ^= xort;
taddrlow1 ^= xort;
xort = (t1 & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR;
taddrlow2 ^= xort;
taddrlow3 ^= xort;
taddr0 &= 0x7ff;
taddr1 &= 0x7ff;
taddr2 &= 0x7ff;
taddr3 &= 0x7ff;
taddrlow0 &= 0x3ff;
taddrlow1 &= 0x3ff;
taddrlow2 &= 0x3ff;
taddrlow3 &= 0x3ff;
uint16_t c0, c1, c2, c3;
int32_t y0, y1, y2, y3, u0, u1, u2, u3, v0, v1, v2, v3;
c0 = tc16[taddrlow0];
c1 = tc16[taddrlow1];
c2 = tc16[taddrlow2];
c3 = tc16[taddrlow3];
y0 = wstate->tmem[taddr0 | 0x800];
u0 = c0 >> 8;
v0 = c0 & 0xff;
y1 = wstate->tmem[taddr1 | 0x800];
u1 = c1 >> 8;
v1 = c1 & 0xff;
y2 = wstate->tmem[taddr2 | 0x800];
u2 = c2 >> 8;
v2 = c2 & 0xff;
y3 = wstate->tmem[taddr3 | 0x800];
u3 = c3 >> 8;
v3 = c3 & 0xff;
u0 = u0 - 0x80;
v0 = v0 - 0x80;
u1 = u1 - 0x80;
v1 = v1 - 0x80;
u2 = u2 - 0x80;
v2 = v2 - 0x80;
u3 = u3 - 0x80;
v3 = v3 - 0x80;
color0->r = u0;
color0->g = v0;
color1->r = u1;
color1->g = v1;
color2->r = u2;
color2->g = v2;
color3->r = u3;
color3->g = v3;
color0->b = color0->a = y0;
color1->b = color1->a = y1;
color2->b = color2->a = y2;
color3->b = color3->a = y3;
}
break;
case TEXEL_YUV32:
{
uint16_t c0, c1, c2, c3;
int32_t y0, y1, y2, y3, u0, u1, u2, u3, v0, v1, v2, v3;
uint32_t xort0, xort1;
taddr0 = (tbase0 << 3) + s0;
taddr1 = (tbase0 << 3) + s1;
taddr2 = (tbase2 << 3) + s0;
taddr3 = (tbase2 << 3) + s1;
taddrlow0 = (taddr0) >> 1;
taddrlow1 = (taddr1 + sdiff) >> 1;
taddrlow2 = (taddr2) >> 1;
taddrlow3 = (taddr3 + sdiff) >> 1;
xort = (t0 & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR;
taddrlow0 ^= xort;
taddrlow1 ^= xort;
xort = (t1 & 1) ? WORD_XOR_DWORD_SWAP : WORD_ADDR_XOR;
taddrlow2 ^= xort;
taddrlow3 ^= xort;
taddrlow0 &= 0x3ff;
taddrlow1 &= 0x3ff;
taddrlow2 &= 0x3ff;
taddrlow3 &= 0x3ff;
c0 = tc16[taddrlow0];
c1 = tc16[taddrlow1];
c2 = tc16[taddrlow2];
c3 = tc16[taddrlow3];
u0 = c0 >> 8;
v0 = c0 & 0xff;
u1 = c1 >> 8;
v1 = c1 & 0xff;
u2 = c2 >> 8;
v2 = c2 & 0xff;
u3 = c3 >> 8;
v3 = c3 & 0xff;
u0 = u0 - 0x80;
v0 = v0 - 0x80;
u1 = u1 - 0x80;
v1 = v1 - 0x80;
u2 = u2 - 0x80;
v2 = v2 - 0x80;
u3 = u3 - 0x80;
v3 = v3 - 0x80;
color0->r = u0;
color0->g = v0;
color1->r = u1;
color1->g = v1;
color2->r = u2;
color2->g = v2;
color3->r = u3;
color3->g = v3;
xort0 = (t0 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
xort1 = (t1 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
if (s0 & 1)
{
taddr0 ^= xort0;
taddr2 ^= xort1;
taddr0 &= 0x7ff;
taddr2 &= 0x7ff;
y0 = wstate->tmem[taddr0 | 0x800];
y2 = wstate->tmem[taddr2 | 0x800];
color0->b = color0->a = y0;
color2->b = color2->a = y2;
}
else
{
y0 = tc16[taddrlow0 | 0x400];
y2 = tc16[taddrlow2 | 0x400];
color0->b = y0 >> 8;
color0->a = ((y0 >> 8) & 0xf) | (y0 & 0xf0);
color2->b = y2 >> 8;
color2->a = ((y2 >> 8) & 0xf) | (y2 & 0xf0);
}
if (s1 & 1)
{
taddr1 ^= xort0;
taddr3 ^= xort1;
taddr1 &= 0x7ff;
taddr3 &= 0x7ff;
y1 = wstate->tmem[taddr1 | 0x800];
y3 = wstate->tmem[taddr3 | 0x800];
color1->b = color1->a = y1;
color3->b = color3->a = y3;
}
else
{
taddr1 ^= xort0;
taddr3 ^= xort1;
taddr1 = (taddr1 >> 1) & 0x3ff;
taddr3 = (taddr3 >> 1) & 0x3ff;
y1 = tc16[taddr1 | 0x400];
y3 = tc16[taddr3 | 0x400];
color1->b = y1 >> 8;
color1->a = ((y1 >> 8) & 0xf) | (y1 & 0xf0);
color3->b = y3 >> 8;
color3->a = ((y3 >> 8) & 0xf) | (y3 & 0xf0);
}
}
break;
case TEXEL_CI4:
{
taddr0 = ((tbase0 << 4) + s0) >> 1;
taddr1 = ((tbase0 << 4) + s1) >> 1;
taddr2 = ((tbase2 << 4) + s0) >> 1;
taddr3 = ((tbase2 << 4) + s1) >> 1;
xort = (t0 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr0 ^= xort;
taddr1 ^= xort;
xort = (t1 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr2 ^= xort;
taddr3 ^= xort;
uint32_t p;
taddr0 &= 0xfff;
taddr1 &= 0xfff;
taddr2 &= 0xfff;
taddr3 &= 0xfff;
ands = s0 & 1;
p = wstate->tmem[taddr0];
p = (ands) ? (p & 0xf) : (p >> 4);
p = (tpal << 4) | p;
color0->r = color0->g = color0->b = color0->a = p;
p = wstate->tmem[taddr2];
p = (ands) ? (p & 0xf) : (p >> 4);
p = (tpal << 4) | p;
color2->r = color2->g = color2->b = color2->a = p;
ands = s1 & 1;
p = wstate->tmem[taddr1];
p = (ands) ? (p & 0xf) : (p >> 4);
p = (tpal << 4) | p;
color1->r = color1->g = color1->b = color1->a = p;
p = wstate->tmem[taddr3];
p = (ands) ? (p & 0xf) : (p >> 4);
p = (tpal << 4) | p;
color3->r = color3->g = color3->b = color3->a = p;
}
break;
case TEXEL_CI8:
{
taddr0 = (tbase0 << 3) + s0;
taddr1 = (tbase0 << 3) + s1;
taddr2 = (tbase2 << 3) + s0;
taddr3 = (tbase2 << 3) + s1;
xort = (t0 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr0 ^= xort;
taddr1 ^= xort;
xort = (t1 & 1) ? BYTE_XOR_DWORD_SWAP : BYTE_ADDR_XOR;
taddr2 ^= xort;
taddr3 ^= xort;
uint32_t p;
taddr0 &= 0xfff;
taddr1 &= 0xfff;
taddr2 &= 0xfff;
taddr3 &= 0xfff;
p = wstate->tmem[taddr0];
color0->r = p;
color0->g = p;
color0->b = p;
color0->a = p;
p = wstate->tmem[taddr2];
color2->r = p;
color2->g = p;
color2->b = p;
color2->a = p;
p = wstate->tmem[taddr1];