public void CS()
{
UInt3 id = ShaderBuiltins.DispatchThreadID;
uint index = id.Y * Params.Width + id.X;
Destination[index] = Source[index];
Source[index] += Source[index];
}
public void CS()
{
UInt3 dtId = ShaderBuiltins.DispatchThreadID;
Vector4 color = Vector4.Zero;
uint randState = (dtId.X * 1973 + dtId.Y * 9277 + Params.FrameCount * 26699) | 1;
Ray ray = Camera.GetRay(Params.Camera, dtId.X, dtId.Y);
color += Color(ray);
ShaderBuiltins.Store(Output, new UInt2(dtId.X, dtId.Y), color);
}
public ShaderFunction(
string declaringType,
string name,
TypeReference returnType,
ParameterDefinition[] parameters,
ShaderFunctionType type,
UInt3 computeGroupCounts)
{
DeclaringType = declaringType;
Name = name;
ReturnType = returnType;
Parameters = parameters;
Type = type;
ComputeGroupCounts = computeGroupCounts;
}
public void CS()
{
UInt3 dtid = ShaderBuiltins.DispatchThreadID;
Vector4 color = Vector4.Zero;
uint randState = (dtid.X * 1973 + dtid.Y * 9277 + Params.FrameCount * 26699) | 1;
uint rayCount = 0;
for (uint smp = 0; smp < RayTracingApplication.NumSamples; smp++)
{
float u = (dtid.X + RandUtil.RandomFloat(ref randState)) / RayTracingApplication.Width;
float v = (dtid.Y + RandUtil.RandomFloat(ref randState)) / RayTracingApplication.Height;
Ray ray = Camera.GetRay(Params.Camera, u, v, ref randState);
color += Color(Params.SphereCount, ref randState, ray, ref rayCount);
}
color /= RayTracingApplication.NumSamples;
ShaderBuiltins.Store(Output, new UInt2(dtid.X, dtid.Y), color);
ShaderBuiltins.InterlockedAdd(RayCount, 0, rayCount);
}
public void Should_SerializeUInt3()
{
UInt3 value = UInt3.MaxValue; // range 0 to 7
Assert.AreEqual(1, value.GetBit(0));
Assert.AreEqual(1, value.GetBit(1));
Assert.AreEqual(1, value.GetBit(2));
Assert.AreEqual(new Bit[] { 1, 1, 1 }, value.GetBits());
value = (UInt3)2;
Assert.AreEqual(0, value.GetBit(0));
Assert.AreEqual(1, value.GetBit(1));
Assert.AreEqual(new Bit[] { 0, 1, 0 }, value.GetBits());
// test overflow
value = (UInt3)12;
Assert.AreEqual(4, value);
Assert.AreEqual(0, value.GetBit(0));
Assert.AreEqual(0, value.GetBit(1));
Assert.AreEqual(1, value.GetBit(2));
Assert.AreEqual(new Bit[] { 0, 0, 1 }, value.GetBits());
}
internal override string GetComputeGroupCountsDeclaration(UInt3 groupCounts)
{
return(string.Empty);
// This isn't actually specified in the compute shader code in Metal.
// It's specified when an MTLComputeCommandEncoder is created.
}
internal override string GetComputeGroupCountsDeclaration(UInt3 groupCounts)
{
return($"layout(local_size_x = {groupCounts.X}, local_size_y = {groupCounts.Y}, local_size_z = {groupCounts.Z}) in;");
}
internal override string GetComputeGroupCountsDeclaration(UInt3 groupCounts)
{
return($"[numthreads({groupCounts.X}, {groupCounts.Y}, {groupCounts.Z})]");
}
