/* not to be used outside of here */
void _png_copy_texture(uint8 *buffer, uint16 *temp_tex,
uint32 channels, uint32 stride,
uint32 mask, uint32 w, uint32 h)
{
uint32 i,j;
uint16 *ourbuffer;
uint8 *pRow;
for(i = 0; i < h; i++)
{
pRow = &buffer[i*stride];
ourbuffer = &temp_tex[i*w];
if (channels == 3)
{
if (mask == PNG_NO_ALPHA)
for(j = 0; j < w; j++)
ourbuffer[j] = LOAD565(pRow[j*3], pRow[j*3+1], pRow[j*3+2]);
else if (mask == PNG_MASK_ALPHA)
for(j = 0; j < w; j++)
ourbuffer[j] = LOAD1555(pRow[j*3],pRow[j*3+1],pRow[j*3+2],255);
else if (mask == PNG_FULL_ALPHA)
for(j = 0; j < w; j++)
ourbuffer[j] = LOAD4444(pRow[j*3],pRow[j*3+1],pRow[j*3+2],255);
}
else if (channels == 4)
{
if (mask == PNG_NO_ALPHA)
{
for(j = 0; j < w; j++)
ourbuffer[j] = LOAD565(pRow[j*4], pRow[j*4+1], pRow[j*4+2]);
}
else if (mask == PNG_MASK_ALPHA)
for(j = 0; j < w; j++)
ourbuffer[j] = LOAD1555(pRow[j*4],pRow[j*4+1],pRow[j*4+2],pRow[j*4+3]);
else if (mask == PNG_FULL_ALPHA)
for(j = 0; j < w; j++)
ourbuffer[j] = LOAD4444(pRow[j*4],pRow[j*4+1],pRow[j*4+2],pRow[j*4+3]);
}
}
}
void
img_copy_texture(uint16 *dest, uint8 *source, uint32 channels, uint32 stride,
const IMG_INFO *info, uint32 w, uint32 h)
{
uint32 i,j;
uint16 *destRow;
uint8 *pRow;
uint8 r,g,b;
for(i = 0; i < h; i++)
{
pRow = &source[i*stride];
destRow = &dest[i*w];
if (channels == 3)
{
switch(info->alpha)
{
case IMG_ALPHA_NONE:
for(j = 0; j < w; j++)
{
if (info->dither == IMG_DITHER_JITTER)
{
r = jitter(pRow[j*3],0,3,info->noise,
i%info->dither_height,j%info->dither_width);
g = jitter(pRow[j*3+1],1,2,info->noise,
i%info->dither_height,j%info->dither_width);
b = jitter(pRow[j*3+2],2,3,info->noise,
i%info->dither_height,j%info->dither_width);
}
else
{
r = pRow[j*3];
g = pRow[j*3+1];
b = pRow[j*3+2];
}
destRow[j] = LOAD565(r,g,b);
}
break;
case IMG_ALPHA_MASK:
for(j = 0; j < w; j++)
{
if (info->dither == IMG_DITHER_JITTER)
{
r = jitter(pRow[j*3],0,3,info->noise,
i%info->dither_height,j%info->dither_width);
g = jitter(pRow[j*3+1],1,3,info->noise,
i%info->dither_height,j%info->dither_width);
b = jitter(pRow[j*3+2],2,3,info->noise,
i%info->dither_height,j%info->dither_width);
}
else
{
r = pRow[j*3];
g = pRow[j*3+1];
b = pRow[j*3+2];
}
destRow[j] = LOAD1555(r,g,b,255);
}
break;
case IMG_ALPHA_FULL:
for(j = 0; j < w; j++)
{
if (info->dither == IMG_DITHER_JITTER)
{
r = jitter(pRow[j*3],0,4,info->noise,
i%info->dither_height,j%info->dither_width);
g = jitter(pRow[j*3+1],1,4,info->noise,
i%info->dither_height,j%info->dither_width);
b = jitter(pRow[j*3+2],2,4,info->noise,
i%info->dither_height,j%info->dither_width);
}
else
{
r = pRow[j*3];
g = pRow[j*3+1];
b = pRow[j*3+2];
}
destRow[j] = LOAD4444(r,g,b,255);
}
break;
case IMG_ALPHA_KEYED:
for(j = 0; j < w; j++)
{
if (info->dither == IMG_DITHER_JITTER)
{
r = jitter(pRow[j*3],0,3,info->noise,
i%info->dither_height,j%info->dither_width);
g = jitter(pRow[j*3+1],1,3,info->noise,
i%info->dither_height,j%info->dither_width);
b = jitter(pRow[j*3+2],2,3,info->noise,
i%info->dither_height,j%info->dither_width);
}
else
{
r = pRow[j*3];
g = pRow[j*3+1];
b = pRow[j*3+2];
}
if (info->key == LOAD8888(pRow[j*3],pRow[j*3+1],pRow[j*3+2],0))
destRow[j] = LOAD1555(r,g,b,0);
else
destRow[j] = LOAD1555(r,g,b,255);
}
}
}
else if (channels == 4)
{
switch(info->alpha)
{
case IMG_ALPHA_NONE:
for(j = 0; j < h; j++)
{
if (info->dither == IMG_DITHER_JITTER)
{
r = jitter(pRow[j*4],0,3,info->noise,
i%info->dither_height,j%info->dither_width);
g = jitter(pRow[j*4+1],1,2,info->noise,
i%info->dither_height,j%info->dither_width);
b = jitter(pRow[j*4+2],2,3,info->noise,
i%info->dither_height,j%info->dither_width);
}
else
{
r = pRow[j*4];
g = pRow[j*4+1];
b = pRow[j*4+2];
}
destRow[j] = LOAD565(r, g, b);
}
break;
case IMG_ALPHA_MASK:
for(j = 0; j < h; j++)
{
if (info->dither == IMG_DITHER_JITTER)
{
r = jitter(pRow[j*4],0,3,info->noise,
i%info->dither_height,j%info->dither_width);
g = jitter(pRow[j*4+1],1,3,info->noise,
i%info->dither_height,j%info->dither_width);
b = jitter(pRow[j*4+2],2,3,info->noise,
i%info->dither_height,j%info->dither_width);
}
else
{
r = pRow[j*4];
g = pRow[j*4+1];
b = pRow[j*4+2];
}
destRow[j] = LOAD1555(r,g,b,pRow[j*4+3]);
}
break;
case IMG_ALPHA_FULL:
for(j = 0; j < h; j++)
{
if (info->dither == IMG_DITHER_JITTER)
{
r = jitter(pRow[j*4],0,4,info->noise,
i%info->dither_height,j%info->dither_width);
g = jitter(pRow[j*4+1],1,4,info->noise,
i%info->dither_height,j%info->dither_width);
b = jitter(pRow[j*4+2],2,4,info->noise,
i%info->dither_height,j%info->dither_width);
}
else
{
r = pRow[j*4];
g = pRow[j*4+1];
b = pRow[j*4+2];
}
destRow[j] = LOAD4444(r,g,b,pRow[j*4+3]);
}
break;
case IMG_ALPHA_KEYED:
for(j = 0; j < h; j++)
{
if (info->dither == IMG_DITHER_JITTER)
{
r = jitter(pRow[j*4],0,3,info->noise,
i%info->dither_height,j%info->dither_width);
g = jitter(pRow[j*4+1],1,3,info->noise,
i%info->dither_height,j%info->dither_width);
b = jitter(pRow[j*4+2],2,3,info->noise,
i%info->dither_height,j%info->dither_width);
}
else
{
r = pRow[j*4];
g = pRow[j*4+1];
b = pRow[j*4+2];
}
if (info->key == LOAD8888(pRow[j*4],pRow[j*4+1],pRow[j*4+2],0))
destRow[j] = LOAD1555(r,g,b,0);
else
destRow[j] = LOAD1555(r,g,b,pRow[j*4+3]);
}
break;
}
}
}
}