// Alea Parallel.For!
internal static Image Render1(int width, int height)
{
var resultLength = ColorComponents * width * height;
var resultMemory = Gpu.Default.AllocateDevice <byte>(resultLength);
var resultDevPtr = new deviceptr <byte>(resultMemory.Handle);
Gpu.Default.For(0, width * height, i =>
{
ComputeRippleAtOffset(resultDevPtr, i, width, height);
});
return(BitmapUtility.FromByteArray(Gpu.CopyToHost(resultMemory), width, height));
}
// Custom!
internal static Image Render2(int width, int height)
{
var resultLength = ColorComponents * width * height;
var resultMemory = Gpu.Default.AllocateDevice <byte>(resultLength);
var resultDevPtr = new deviceptr <byte>(resultMemory.Handle);
var lp = ComputeLaunchParameters(width, height);
Gpu.Default.Launch(() =>
{
var i = blockDim.x * blockIdx.x + threadIdx.x;
ComputeRippleAtOffset(resultDevPtr, i, width, height);
}, lp);
return(BitmapUtility.FromByteArray(Gpu.CopyToHost(resultMemory), width, height));
}
// Byte Array!
internal static Image Render2(int width, int height)
{
var result = new byte[ColorComponents * width * height];
Parallel.For(0, height, y =>
{
for (var x = 0; x < width; ++x)
{
ComputeRippleAtOffset(x, y, width, height, v =>
{
var offset = ColorComponents * (y * width + x);
result[offset + 0] = v;
result[offset + 1] = v;
result[offset + 2] = v;
});
}
});
return(BitmapUtility.FromByteArray(result, width, height));
}
