/// <summary>
/// Gets a compute shader from the cache.
/// </summary>
/// <remarks>
/// This automatically translates, compiles and adds the code to the cache if not present.
/// </remarks>
/// <param name="gpuVa">GPU virtual address of the binary shader code</param>
/// <param name="sharedMemorySize">Shared memory size of the compute shader</param>
/// <param name="localSizeX">Local group size X of the computer shader</param>
/// <param name="localSizeY">Local group size Y of the computer shader</param>
/// <param name="localSizeZ">Local group size Z of the computer shader</param>
/// <returns>Compiled compute shader code</returns>
public ComputeShader GetComputeShader(ulong gpuVa, int sharedMemorySize, int localSizeX, int localSizeY, int localSizeZ)
{
bool isCached = _cpPrograms.TryGetValue(gpuVa, out List <ComputeShader> list);
if (isCached)
{
foreach (ComputeShader cachedCpShader in list)
{
if (!IsShaderDifferent(cachedCpShader, gpuVa))
{
return(cachedCpShader);
}
}
}
CachedShader shader = TranslateComputeShader(gpuVa, sharedMemorySize, localSizeX, localSizeY, localSizeZ);
shader.HostShader = _context.Renderer.CompileShader(shader.Program);
IProgram hostProgram = _context.Renderer.CreateProgram(new IShader[] { shader.HostShader });
ComputeShader cpShader = new ComputeShader(hostProgram, shader);
if (!isCached)
{
list = new List <ComputeShader>();
_cpPrograms.Add(gpuVa, list);
}
list.Add(cpShader);
return(cpShader);
}
/// <summary>
/// Checks if graphics shader code from all stages in memory is different from the cached shaders.
/// </summary>
/// <param name="gpShaders">Cached graphics shaders</param>
/// <param name="addresses">GPU virtual addresses of all enabled shader stages</param>
/// <returns>True if the code is different, false otherwise</returns>
private bool IsShaderDifferent(GraphicsShader gpShaders, ShaderAddresses addresses)
{
for (int stage = 0; stage < gpShaders.Shaders.Length; stage++)
{
CachedShader shader = gpShaders.Shaders[stage];
ulong gpuVa = 0;
switch (stage)
{
case 0: gpuVa = addresses.Vertex; break;
case 1: gpuVa = addresses.TessControl; break;
case 2: gpuVa = addresses.TessEvaluation; break;
case 3: gpuVa = addresses.Geometry; break;
case 4: gpuVa = addresses.Fragment; break;
}
if (IsShaderDifferent(shader, gpuVa))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Checks if the code of the specified cached shader is different from the code in memory.
/// </summary>
/// <param name="shader">Cached shader to compare with</param>
/// <param name="gpuVa">GPU virtual address of the binary shader code</param>
/// <returns>True if the code is different, false otherwise</returns>
private bool IsShaderDifferent(CachedShader shader, ulong gpuVa)
{
if (shader == null)
{
return(false);
}
ReadOnlySpan <byte> memoryCode = _context.MemoryAccessor.GetSpan(gpuVa, (ulong)shader.Code.Length * 4);
return(!MemoryMarshal.Cast <byte, int>(memoryCode).SequenceEqual(shader.Code));
}
/// <summary>
/// Checks if the code of the specified cached shader is different from the code in memory.
/// </summary>
/// <param name="shader">Cached shader to compare with</param>
/// <param name="gpuVa">GPU virtual address of the binary shader code</param>
/// <returns>True if the code is different, false otherwise</returns>
private bool IsShaderDifferent(CachedShader shader, ulong gpuVa)
{
if (shader == null)
{
return(false);
}
for (int index = 0; index < shader.Code.Length; index++)
{
if (_context.MemoryAccessor.ReadInt32(gpuVa + (ulong)index * 4) != shader.Code[index])
{
return(true);
}
}
return(false);
}
/// <summary>
/// Creates a new instance of the compute shader.
/// </summary>
/// <param name="hostProgram">Host shader program</param>
/// <param name="shader">Cached shader</param>
public ComputeShader(IProgram hostProgram, CachedShader shader)
{
HostProgram = hostProgram;
Shader = shader;
}
public Shader GetComputeShader(
ulong gpuVa,
int localSizeX,
int localSizeY,
int localSizeZ,
int localMemorySize,
int sharedMemorySize)
{
if (gpuVa == 0)
{
return null;
}
ShaderPack pack = new ShaderPack();
ReadOnlySpan<byte> code = GetShaderCodeHeaderless(gpuVa);
pack.Add(code);
Shader cs = _cache.Get(pack, out int hash);
if (cs != null)
{
return cs;
}
_dumper.Dump(code, compute: true, out string fullPath, out string codePath);
int QueryInfo(QueryInfoName info, int index)
{
return info switch
{
QueryInfoName.ComputeLocalSizeX => localSizeX,
QueryInfoName.ComputeLocalSizeY => localSizeY,
QueryInfoName.ComputeLocalSizeZ => localSizeZ,
QueryInfoName.ComputeLocalMemorySize => localMemorySize,
QueryInfoName.ComputeSharedMemorySize => sharedMemorySize,
_ => QueryInfoCommon(info)
};
}
CachedShader shader = TranslateComputeShader(
state,
gpuVa,
localSizeX,
localSizeY,
localSizeZ,
localMemorySize,
sharedMemorySize);
TranslatorCallbacks callbacks = new TranslatorCallbacks(QueryInfo, PrintLog);
ShaderProgram program = Translator.Translate(code, callbacks, DefaultFlags | TranslationFlags.Compute);
if (fullPath != null && codePath != null)
{
program.Prepend("// " + codePath);
program.Prepend("// " + fullPath);
}
IShader shader = _context.Renderer.CompileShader(program);
IProgram hostProgram = _context.Renderer.CreateProgram(new IShader[] { shader });
cs = new Shader(hostProgram, new ShaderMeta(hostProgram, program.Info));
int insertIndex = _cache.Add(hash, cs, pack);
if (Configuration.Enabled)
{
ShaderProgramInfo[] info = new ShaderProgramInfo[] { program.Info };
ShaderCacheFile.Save(Configuration.ShaderPath, info, pack, hostProgram.GetGpuBinary(), hash, insertIndex);
}
return cs;
}
