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;
}
}
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;
}
}
public void Render(Triangle tri)
{
if (!ready)
{
return;
}
if (tri.getParent() == null)
{
return;
}
if ((mode & Wireframe) != 0)
{
drawWireframe(tri, color);
if ((mode & Wireframe) == 0)
{
return;
}
}
p1 = tri.p1;
p2 = tri.p2;
p3 = tri.p3;
if (p1.Y > p2.Y)
{
tempVertex = p1; p1 = p2; p2 = tempVertex;
}
if (p2.Y > p3.Y)
{
tempVertex = p2; p2 = p3; p3 = tempVertex;
}
if (p1.Y > p2.Y)
{
tempVertex = p1; p1 = p2; p2 = tempVertex;
}
if (p1.Y >= height)
{
return;
}
if (p3.Y < 0)
{
return;
}
if (p1.Y == p3.Y)
{
return;
}
if (mode == Flat)
{
lutID = (int)(tri.n2.X * 127 + 127) + ((int)(tri.n2.Y * 127 + 127) << 8);
c = ColorUtility.multiply(color, diffuse[lutID]);
s = ColorUtility.scale(specular[lutID], reflectivity);
currentColor = ColorUtility.add(c, s);
}
currentId = (tri.getParent().id << 16) | tri.id;
x1 = p1.X << 8;
x2 = p2.X << 8;
x3 = p3.X << 8;
y1 = p1.Y;
y2 = p2.Y;
y3 = p3.Y;
x4 = x1 + (x3 - x1) * (y2 - y1) / (y3 - y1);
x1 <<= 8; x2 <<= 8; x3 <<= 8; x4 <<= 8;
z1 = p1.Z;
z2 = p2.Z;
z3 = p3.Z;
nx1 = p1.nx << 16;
nx2 = p2.nx << 16;
nx3 = p3.nx << 16;
ny1 = p1.ny << 16;
ny2 = p2.ny << 16;
ny3 = p3.ny << 16;
tx1 = p1.tx << 16;
tx2 = p2.tx << 16;
tx3 = p3.tx << 16;
ty1 = p1.ty << 16;
ty2 = p2.ty << 16;
ty3 = p3.ty << 16;
dx = (x4 - x2) >> 16;
if (dx == 0)
{
return;
}
temp = 256 * (y2 - y1) / (y3 - y1);
z4 = z1 + ((z3 - z1) >> 8) * temp;
nx4 = nx1 + ((nx3 - nx1) >> 8) * temp;
ny4 = ny1 + ((ny3 - ny1) >> 8) * temp;
tx4 = tx1 + ((tx3 - tx1) >> 8) * temp;
ty4 = ty1 + ((ty3 - ty1) >> 8) * temp;
dz = (z4 - z2) / dx;
dnx = (nx4 - nx2) / dx;
dny = (ny4 - ny2) / dx;
dtx = (tx4 - tx2) / dx;
dty = (ty4 - ty2) / dx;
if (dx < 0)
{
temp = x2; x2 = x4; x4 = temp;
z2 = z4;
tx2 = tx4;
ty2 = ty4;
nx2 = nx4;
ny2 = ny4;
}
if (y2 >= 0)
{
dy = y2 - y1;
if (dy != 0)
{
dxL = (x2 - x1) / dy;
dxR = (x4 - x1) / dy;
dzBase = (z2 - z1) / dy;
dnxBase = (nx2 - nx1) / dy;
dnyBase = (ny2 - ny1) / dy;
dtxBase = (tx2 - tx1) / dy;
dtyBase = (ty2 - ty1) / dy;
}
xBase = x1;
xMax = x1;
zBase = z1;
nxBase = nx1;
nyBase = ny1;
txBase = tx1;
tyBase = ty1;
if (y1 < 0)
{
xBase -= y1 * dxL;
xMax -= y1 * dxR;
zBase -= y1 * dzBase;
nxBase -= y1 * dnxBase;
nyBase -= y1 * dnyBase;
txBase -= y1 * dtxBase;
tyBase -= y1 * dtyBase;
y1 = 0;
}
y2 = (y2 < height) ? y2 : height;
offset = y1 * width;
for (y = y1; y < y2; y++)
{
renderLine();
}
}
if (y2 < height)
{
dy = y3 - y2;
if (dy != 0)
{
dxL = (x3 - x2) / dy;
dxR = (x3 - x4) / dy;
dzBase = (z3 - z2) / dy;
dnxBase = (nx3 - nx2) / dy;
dnyBase = (ny3 - ny2) / dy;
dtxBase = (tx3 - tx2) / dy;
dtyBase = (ty3 - ty2) / dy;
}
xBase = x2;
xMax = x4;
zBase = z2;
nxBase = nx2;
nyBase = ny2;
txBase = tx2;
tyBase = ty2;
if (y2 < 0)
{
xBase -= y2 * dxL;
xMax -= y2 * dxR;
zBase -= y2 * dzBase;
nxBase -= y2 * dnxBase;
nyBase -= y2 * dnyBase;
txBase -= y2 * dtxBase;
tyBase -= y2 * dtyBase;
y2 = 0;
}
y3 = (y3 < height) ? y3 : height;
offset = y2 * width;
for (y = y2; y < y3; y++)
{
renderLine();
}
}
}