public void SimdTest()
{
Bounds bounds = new Bounds(new Vector3(1, 1, 1), new Vector3(3, 3, 3));
const int positionX = 4;
const int positionZ = 3;
// Non-SIMD version
Vector3Int bMin;
Vector3Int bMax;
Vector3Int myVec52 = new Vector3Int(Chunk.Vec5.X, Chunk.Vec5.X, Chunk.Vec5.X);
{
Vector3Int pom = new Vector3Int(positionX * EngineSettings.ChunkConfig.SizeX, 0, positionZ * EngineSettings.ChunkConfig.SizeZ);
int minX = Mathf.Clamp(Mathf.FloorToInt(bounds.min.x) - pom.X - myVec52.X, 0, EngineSettings.ChunkConfig.MaskX);
int minY = Mathf.Clamp(Mathf.FloorToInt(bounds.min.y) - myVec52.Y, 0, EngineSettings.ChunkConfig.SizeYTotal - 1);
int minZ = Mathf.Clamp(Mathf.FloorToInt(bounds.min.z) - pom.Z - myVec52.Z, 0, EngineSettings.ChunkConfig.MaskZ);
bMin = new Vector3Int(minX, minY, minZ);
int maxX = Mathf.Clamp(Mathf.Clamp(bMin.X, 0, EngineSettings.ChunkConfig.MaskX), 0, EngineSettings.ChunkConfig.MaskX);
int maxY = Mathf.Clamp(Mathf.Clamp(bMin.Y, 0, EngineSettings.ChunkConfig.SizeYTotal - 1), 0, EngineSettings.ChunkConfig.SizeYTotal-1);
int maxZ = Mathf.Clamp(Mathf.Clamp(bMin.Z, 0, EngineSettings.ChunkConfig.MaskZ), 0, EngineSettings.ChunkConfig.MaskZ);
bMax = new Vector3Int(maxX, maxY, maxZ);
}
// SIMD version
Vector4i bMinv;
Vector4i bMaxv;
{
Vector4f bMinf = new Vector4f(bounds.min.x, bounds.min.y, bounds.min.z, 0f);
bMinv = bMinf.ConvertToIntTruncated();
Vector4f bMaxf = new Vector4f(bounds.max.x, bounds.max.y, bounds.max.z, 0f);
bMaxv = bMaxf.ConvertToInt();
Vector4i pom = new Vector4i(positionX, 0, positionZ, 0)*Chunk.VecSize;
bMinv -= pom;
bMinv -= Chunk.Vec5;
bMinv = bMinv.Max(Vector4i.Zero).Min(Chunk.VecSize1);
// Clamp to 0..size (x,z) or 0..height (y) respectively
bMaxv -= pom;
bMaxv += Chunk.Vec5;
bMaxv = bMaxv.Max(Vector4i.Zero).Min(Chunk.VecSize1);
// Clamp to 0..size (x,z) or 0..height (y) respectively
}
Assert.AreEqual(bMin.X, bMinv.X);
Assert.AreEqual(bMin.Y, bMinv.Y);
Assert.AreEqual(bMin.Z, bMinv.Z);
Assert.AreEqual(bMax.X, bMaxv.X);
Assert.AreEqual(bMax.Y, bMaxv.Y);
Assert.AreEqual(bMax.Z, bMaxv.Z);
}
public static int test_0_f_to_i () {
var a = new Vector4f (1.1f, 2.2f, 3.5f, 4.6f);
var b = a.ConvertToInt ();
if (b.X != 1)
return 1;
if (b.Y != 2)
return 2;
if (b.Z != 4)
return 3;
if (b.W != 5)
return 4;
return 0;
}
