void renderLinePET()
{
for (x = xL; x < xR; x++)
{
pos = x + offset;
if (z < zBuffer[pos])
{
lutID = ((nx >> 16) & 255) + (((ny >> 16) & 255) << 8);
bkgrd = screen.p[pos];
c = texture.pixel[((tx >> 16) & tw) + (((ty >> 16) & th) << tbitW)];
c = ColorUtility.multiply(c, diffuse[lutID]);
s = ColorUtility.add(specular[lutID], envmap[lutID]);
s = ColorUtility.scale(s, reflectivity);
c = ColorUtility.transparency(bkgrd, c, transparency);
c = ColorUtility.add(c, s);
screen.p[pos] = 0xFF000000 | c;
zBuffer[pos] = (uint)z;
if (useIdBuffer)
{
idBuffer[pos] = currentId;
}
}
z += dz;
nx += dnx;
ny += dny;
tx += dtx;
ty += dty;
}
}
void renderLineE()
{
for (x = xL; x < xR; x++)
{
pos = x + offset;
if (z < zBuffer[pos])
{
lutID = ((nx >> 16) & 255) + (((ny >> 16) & 255) << 8);
bkgrd = screen.p[pos];
s = ColorUtility.add(specular[lutID], envmap[lutID]);
s = ColorUtility.scale(s, reflectivity);
c = ColorUtility.transparency(bkgrd, s, transparency);
screen.p[pos] = 0xFF000000 | c;
zBuffer[pos] = (uint)z;
if (useIdBuffer)
{
idBuffer[pos] = currentId;
}
}
z += dz;
nx += dnx;
ny += dny;
}
}
public static Texture blendTopDown(Texture top, Texture down)
{
down.resize(top.width, top.height);
var t = new Texture(top.width, top.height);
var pos = 0;
uint alpha;
for (var y = 0; y < top.height; y++)
{
alpha = (uint)(255 * y / (top.height - 1));
for (var x = 0; x < top.width; x++)
{
t.pixel[pos] = ColorUtility.transparency(down.pixel[pos], top.pixel[pos], alpha);
pos++;
}
}
return(t);
}
// Fast scanline rendering
void renderLineF()
{
for (x = xL; x < xR; x++)
{
pos = x + offset;
if (z < zBuffer[pos])
{
bkgrd = screen.p[pos];
c = ColorUtility.transparency(bkgrd, currentColor, transparency);
screen.p[pos] = 0xFF000000 | c;
zBuffer[pos] = (uint)z;
if (useIdBuffer)
{
idBuffer[pos] = currentId;
}
}
z += dz;
}
}
void renderLineT()
{
for (x = xL; x < xR; x++)
{
pos = x + offset;
if (z < zBuffer[pos])
{
bkgrd = screen.p[pos];
c = texture.pixel[((tx >> 16) & tw) + (((ty >> 16) & th) << tbitW)];
c = ColorUtility.transparency(bkgrd, c, transparency);
screen.p[pos] = 0xFF000000 | c;
zBuffer[pos] = (uint)z;
if (useIdBuffer)
{
idBuffer[pos] = currentId;
}
}
z += dz;
tx += dtx;
ty += dty;
}
}
