public Vector4 FS(FSIn input)
{
Vector4 outFragColor;
Vector2 projCoord = ClipToTextureCoordinates(input.Position);
// Slow single pass blur
// For demonstration purposes only
const float blurSize = 1f / 512f;
Vector4 color = Sample(ColorMap, ColorMapSampler, input.UV);
outFragColor = color * 0.25f;
if (IsFrontFace)
{
// Only render mirrored scene on front facing (upper) side of mirror surface
Vector4 reflection = new Vector4(0.0f);
for (int x = -3; x <= 3; x++)
{
for (int y = -3; y <= 3; y++)
{
reflection += Sample(
ReflectionMap,
ReflectionMapSampler,
new Vector2(projCoord.X + x * blurSize, projCoord.Y + y * blurSize)) / 49.0f;
}
}
outFragColor += reflection * 1.5f * (color.X);
}
return(outFragColor);
}
public Vector4 FS(FSIn input)
{
Vector3 Eye = Vector3.Normalize(-input.EyePos);
Vector3 Reflected = Vector3.Normalize(Vector3.Reflect(-input.LightVec, input.Normal));
Vector4 IAmbient = new Vector4(0.1f, 0.1f, 0.1f, 1.0f);
Vector4 IDiffuse = new Vector4(MathF.Max(Vector3.Dot(input.Normal, input.LightVec), 0f));
float specular = 0.75f;
Vector4 ISpecular = new Vector4(0.0f);
if (Vector3.Dot(input.EyePos, input.Normal) < 0.0)
{
ISpecular = new Vector4(0.5f, 0.5f, 0.5f, 1.0f) * MathF.Pow(MathF.Max(Vector3.Dot(Reflected, Eye), 0.0f), 16.0f) * specular;
}
return((IAmbient + IDiffuse) * new Vector4(input.Color, 1.0f) + ISpecular);
}
