void ProcessCheckedOptimized(int x0, int y0)
{
var sum = 0.0f;
var x1 = Math.Max(0, ofsx - x0);
var x2 = Math.Min(kw1, iw1 + ofsx - x0);
for (var j = 0; j <= kh1; j++)
{
var y = Math.Max(0, Math.Min(ih1, y0 - ofsy + j));
var p = img.PixelAddr(x0 - ofsx, y);
var k = kernel.PixelAddr(0, j);
for (var i = 0; i < x1; i++)
{
sum += p[x1] * k[i];
}
for (var i = x1; i <= x2; i++)
{
sum += p[i] * k[i];
}
for (var i = x2 + 1; i <= kw1; i++)
{
sum += p[x2] * k[i];
}
}
res[x0, y0] = sum;
}
public static void Sum_Avx(NativeImage <float> img1, NativeImage <float> img2, NativeImage <float> res)
{
var w8 = res.Width / 8 * 8;
for (var j = 0; j < res.Height; j++)
{
var p1 = img1.PixelAddr(0, j);
var p2 = img2.PixelAddr(0, j);
var r = res.PixelAddr(0, j);
for (var i = 0; i < w8; i += 8)
{
Avx.StoreAligned(r, Avx.Add(Avx.LoadAlignedVector256(p1), Avx.LoadAlignedVector256(p2)));
p1 += 8;
p2 += 8;
r += 8;
}
for (var i = w8; i < res.Width; i++)
{
*r++ = *p1++ + *p2++;
}
}
}
public static void Rotate180_Optimized(NativeImage <float> src, NativeImage <float> dst)
{
var w = src.Width;
for (var j = 0; j < src.Height; j++)
{
var s = src.PixelAddr(0, j);
var d = dst.PixelAddr(src.Width, j);
for (var i = 0; i < w; i++)
{
*--d = *s++;
}
}
}
public static void Sum_Optimized(NativeImage <float> img1, NativeImage <float> img2, NativeImage <float> res)
{
var w = res.Width;
for (var j = 0; j < res.Height; j++)
{
var p1 = img1.PixelAddr(0, j);
var p2 = img2.PixelAddr(0, j);
var r = res.PixelAddr(0, j);
for (var i = 0; i < w; i++)
{
r[i] = p1[i] + p2[i];
}
}
}
void ProcessUncheckedVector(int x0, int y0)
{
var sum = Vector256 <float> .Zero;
for (var j = 0; j <= kh1; j++)
{
var s = img.PixelAddr(x0 - ofsx, y0 - ofsy + j);
var k = kernel.PixelAddr(0, j);
for (var i = 0; i <= kw1; i++)
{
sum = Avx.Add(sum, Avx.Multiply(Avx.LoadVector256(s), Avx.BroadcastScalarToVector256(k)));
s++;
k++;
}
}
Avx.Store(res.PixelAddr(x0, y0), sum);
}
public static void Rotate180_Avx(NativeImage <float> src, NativeImage <float> dst)
{
var w8 = src.Width / 8 * 8;
for (var j = 0; j < src.Height; j++)
{
var s = src.PixelAddr(0, j);
var d = dst.PixelAddr(src.Width, j);
for (var i = 0; i < w8; i += 8)
{
var v = Avx.Permute(Avx.LoadAlignedVector256(s), 0x1b);
s += 8;
d -= 8;
Avx.Store(d, Avx.Permute2x128(v, v, 1));
}
for (var i = w8; i < src.Width; i++)
{
*--d = *s++;
}
}
}
