void scale_up_bitmap_rle(grs_bitmap *source_bmp, grs_bitmap *dest_bmp, int x0, int y0, int x1, int y1, fix u0, fix v0, fix u1, fix v1, int orientation )
{
fix dv, v;
int y, last_row = -1;
if (orientation & 1) {
int t;
t = u0; u0 = u1; u1 = t;
}
if (orientation & 2) {
int t;
t = v0; v0 = v1; v1 = t;
if (v1 < v0)
v0--;
}
dv = (v1-v0) / (y1-y0);
rls_stretch_scanline_setup( (int)(x1-x0), f2i(u1)-f2i(u0) );
if ( scale_ydelta_minus_1 < 1 ) return;
v = v0;
for (y=y0; y<=y1; y++ ) {
if ( f2i(v) != last_row ) {
last_row = f2i(v);
decode_row( source_bmp, last_row );
}
scale_source_ptr = &scale_rle_data[f2i(u0)];
scale_dest_ptr = &dest_bmp->bm_data[dest_bmp->bm_rowsize*y+x0];
rls_stretch_scanline( );
v += dv;
}
}
void scale_up_bitmap(grs_bitmap *source_bmp, grs_bitmap *dest_bmp, int x0, int y0, int x1, int y1, fix u0, fix v0, fix u1, fix v1, int orientation )
{
fix dv, v;
int y;
if (orientation & 1) {
int t;
t = u0; u0 = u1; u1 = t;
}
if (orientation & 2) {
int t;
t = v0; v0 = v1; v1 = t;
if (v1 < v0)
v0--;
}
v = v0;
dv = (v1-v0) / (y1-y0);
rls_stretch_scanline_setup( (int)(x1-x0), f2i(u1)-f2i(u0) );
if ( scale_ydelta_minus_1 < 1 ) return;
v = v0;
for (y=y0; y<=y1; y++ ) {
scale_source_ptr = &source_bmp->bm_texBuf[source_bmp->bm_props.rowsize*f2i(v)+f2i(u0)];
scale_dest_ptr = &dest_bmp->bm_texBuf[dest_bmp->bm_props.rowsize*y+x0];
rls_stretch_scanline();
v += dv;
}
}