public ExecutionContext(VirtualMachine virtualMachine, int index, RequiredRegisters requiredRegisters)
{
_virtualMachine = virtualMachine;
Index = index;
Inputs = new Number4[requiredRegisters.NumPrimitives][];
for (int i = 0; i < requiredRegisters.NumPrimitives; i++)
{
Inputs[i] = new Number4[requiredRegisters.Inputs];
}
Outputs = new Number4[requiredRegisters.Outputs];
Temps = new Number4[requiredRegisters.Temps];
IndexableTemps = new Number4[requiredRegisters.IndexableTemps.Count][];
for (int i = 0; i < requiredRegisters.IndexableTemps.Count; i++)
{
IndexableTemps[i] = new Number4[requiredRegisters.IndexableTemps[i]];
}
}
public VirtualMachine(BytecodeContainer bytecode, int numContexts)
{
if (bytecode.Shader.Version.ProgramType == ProgramType.PixelShader && numContexts % 4 != 0)
{
throw new ArgumentOutOfRangeException("numContexts", "numContexts must be a multiple of 4 for pixel shaders.");
}
_bytecode = bytecode;
var instructionTokens = bytecode.Shader.Tokens.OfType <InstructionToken>().ToArray();
var branchingInstructions = ExplicitBranchingRewriter.Rewrite(instructionTokens);
var controlFlowGraph = ControlFlowGraph.FromInstructions(branchingInstructions);
_executableInstructions = ExecutableInstructionRewriter.Rewrite(controlFlowGraph).ToArray();
_requiredRegisters = RequiredRegisters.FromShader(bytecode.Shader);
_executionContexts = new ExecutionContext[numContexts];
for (int i = 0; i < _executionContexts.Length; i++)
{
_executionContexts[i] = new ExecutionContext(this, i, _requiredRegisters);
}
ConstantBuffers = new Number4[_requiredRegisters.ConstantBuffers.Count][];
for (int i = 0; i < _requiredRegisters.ConstantBuffers.Count; i++)
{
ConstantBuffers[i] = new Number4[_requiredRegisters.ConstantBuffers[i]];
}
TextureSamplers = new TextureSampler[_requiredRegisters.Resources.Count];
for (int i = 0; i < _requiredRegisters.Resources.Count; i++)
{
TextureSamplers[i] = TextureSamplerFactory.Create(_requiredRegisters.Resources[i]);
}
Textures = new ITexture[_requiredRegisters.Resources.Count];
Samplers = new SamplerState[_requiredRegisters.Samplers];
}
