bool BilinearScalerInternal_X1Y12(Texture *tex, sint32 sx, sint32 sy, sint32 sw, sint32 sh,
uint8* pixel, sint32 dw, sint32 dh, sint32 pitch, bool clamp_src)
{
// Source buffer pointers
uintS *texel = reinterpret_cast<uintS*>(tex->buffer) + (sy * tex->width + sx);
int tpitch = tex->width;
uintS *tline_end = texel + (sw);
uintS *tex_end = texel + (sh-5)*tex->width;
int tex_diff = (tex->width*5) - sw;
uint8 a[4], b[4], c[4], d[4], e[4], l[4];
uint8 cols[6][4];
bool clip_y = true;
if (sh+sy < tex->height && clamp_src == false)
{
clip_y = false;
tex_end = texel + (sh)*tex->width;
}
// Src Loop Y
do {
// Src Loop X
do {
Read6(a,b,c,d,e,l);
texel++;
X1xY12xDoCols();
X1xY12xInnerLoop();
pixel -= pitch*6-sizeof(uintX);
} while (texel != tline_end);
pixel += pitch*6-sizeof(uintX)*(dw);
texel += tex_diff;
tline_end += tpitch*5;
} while (texel != tex_end);
//
// Final Rows - Clipping
//
// Src Loop Y
if (clip_y) {
// Src Loop X
do {
Read6_Clipped(a,b,c,d,e,l);
texel++;
X1xY12xDoCols();
X1xY12xInnerLoop();
pixel -= pitch*6-sizeof(uintX);
} while (texel != tline_end);
}
return true;
}
LONG Read(ULONG BlockAdr,
UWORD TransferLen, void *buffer)
{{{
if (BlockAdr > cMaxBlockAdr)
return Read10(BlockAdr, TransferLen, buffer);
else
return Read6(BlockAdr, TransferLen, buffer);
}}}
