private static void Execute(ExecutionContext context, ExecutableInstruction instruction, NumberType numberType, Number4ToNumber4Callback callback)
{
var src0 = GetOperandValue(context, instruction.Operands[1], numberType);
var result = callback(ref src0);
SetRegisterValue(context, instruction.Operands[0], result);
}
private static void Execute(ExecutionContext context, ExecutableInstruction instruction, NumberType numberType, BoolNumber4Number4Number4ToNumber4Callback callback)
{
var src0 = GetOperandValue(context, instruction.Operands[1], numberType);
var src1 = GetOperandValue(context, instruction.Operands[2], numberType);
var src2 = GetOperandValue(context, instruction.Operands[3], numberType);
var result = callback(instruction.Saturate, ref src0, ref src1, ref src2);
SetRegisterValue(context, instruction.Operands[0], result);
}
private static void GenerateExecute2NoSat(StringBuilder sb, ExecutableInstruction instruction, string methodName)
{
sb.AppendLineIndent(2, "foreach (var context in activeExecutionContexts)");
sb.AppendLineIndent(2, "{");
sb.AppendLineIndent(2, " var src0 = {0};", GenerateGetOperandValue(instruction.Operands[1], NumberType.Float));
sb.AppendLineIndent(2, " var src1 = {0};", GenerateGetOperandValue(instruction.Operands[2], NumberType.Float));
sb.AppendLineIndent(2, " var result = InstructionImplementations.{0}(ref src0, ref src1);", methodName);
GenerateSetRegisterValue(sb, instruction.Operands[0]);
sb.AppendLineIndent(2, "}");
}
private static void ExecuteScalar(ExecutionContext context, ExecutableInstruction instruction, NumberType numberType, Number4Number4ToNumberCallback callback)
{
var src0 = GetOperandValue(context, instruction.Operands[1], numberType);
var src1 = GetOperandValue(context, instruction.Operands[2], numberType);
var result = callback(instruction.Saturate, ref src0, ref src1);
SetRegisterValue(context, instruction.Operands[0], new Number4
{
Number0 = result,
Number1 = result,
Number2 = result,
Number3 = result
});
}
private static void GenerateInstructionCode(StringBuilder sb, ExecutableInstruction instruction)
{
switch (instruction.OpcodeType)
{
case Execution.ExecutableOpcodeType.Add:
GenerateExecute2(sb, instruction, "Add");
break;
case Execution.ExecutableOpcodeType.Branch:
break;
case Execution.ExecutableOpcodeType.BranchC:
sb.AppendLineIndent(2, "var activeMasks = new List<BitArray>");
sb.AppendLineIndent(2, "{");
sb.AppendLineIndent(2, " new BitArray(executionContexts.Length),");
sb.AppendLineIndent(2, " new BitArray(executionContexts.Length)");
sb.AppendLineIndent(2, "};");
sb.AppendLineIndent(2, "foreach (var context in activeExecutionContexts)");
sb.AppendLineIndent(2, "{");
sb.AppendLineIndent(2, " var src0 = {0};", GenerateGetOperandValue(instruction.Operands[0], NumberType.UInt));
sb.AppendLineIndent(2, " var result = src0.{0};", GenerateTestCondition(instruction.TestBoolean));
sb.AppendLineIndent(2, " activeMasks[0][context.Index] = !result;");
sb.AppendLineIndent(2, " activeMasks[1][context.Index] = result;");
sb.AppendLineIndent(2, "}");
break;
case Execution.ExecutableOpcodeType.Cut:
case Execution.ExecutableOpcodeType.CutStream:
sb.AppendLineIndent(2, "yield return ExecutionResponse.Cut;");
break;
case Execution.ExecutableOpcodeType.Dp2:
GenerateExecuteScalar2(sb, instruction, "Dp2");
break;
case Execution.ExecutableOpcodeType.Dp3:
GenerateExecuteScalar2(sb, instruction, "Dp3");
break;
case Execution.ExecutableOpcodeType.Dp4:
GenerateExecuteScalar2(sb, instruction, "Dp4");
break;
case Execution.ExecutableOpcodeType.Emit:
case Execution.ExecutableOpcodeType.EmitStream:
sb.AppendLineIndent(2, "yield return ExecutionResponse.Emit;");
break;
case Execution.ExecutableOpcodeType.IAdd:
GenerateExecute2NoSat(sb, instruction, "IAdd");
break;
case Execution.ExecutableOpcodeType.IGe:
GenerateExecute2NoSat(sb, instruction, "IGe");
break;
case Execution.ExecutableOpcodeType.IShl:
GenerateExecute2NoSat(sb, instruction, "IShl");
break;
case Execution.ExecutableOpcodeType.IShr:
GenerateExecute2NoSat(sb, instruction, "IShr");
break;
case Execution.ExecutableOpcodeType.Mad:
GenerateExecute3(sb, instruction, "Mad");
break;
case Execution.ExecutableOpcodeType.Max:
GenerateExecute2(sb, instruction, "Max");
break;
case Execution.ExecutableOpcodeType.Min:
GenerateExecute2(sb, instruction, "Min");
break;
case Execution.ExecutableOpcodeType.Mul:
GenerateExecute2(sb, instruction, "Mul");
break;
case Execution.ExecutableOpcodeType.Mov:
GenerateExecute1(sb, instruction, "Mov");
break;
case Execution.ExecutableOpcodeType.MovC:
GenerateExecute3(sb, instruction, "MovC");
break;
case Execution.ExecutableOpcodeType.Ret:
sb.AppendLineIndent(2, "yield return ExecutionResponse.Finished;");
break;
case Execution.ExecutableOpcodeType.Rsq:
GenerateExecute1(sb, instruction, "Rsq");
break;
case Execution.ExecutableOpcodeType.Sample:
var srcResourceIndex = instruction.Operands[2].Indices[0].Value;
var srcSamplerIndex = instruction.Operands[3].Indices[0].Value;
sb.AppendLineIndent(2, "{");
sb.AppendLineIndent(2, " var textureSampler = virtualMachine.TextureSamplers[{0}];", srcResourceIndex);
sb.AppendLineIndent(2, " var srcResource = virtualMachine.Textures[{0}];", srcResourceIndex);
sb.AppendLineIndent(2, " var srcSampler = virtualMachine.Samplers[{0}];", srcSamplerIndex);
sb.AppendLineIndent(2, " ");
sb.AppendLineIndent(2, " if (textureSampler == null || srcResource == null)");
sb.AppendLineIndent(2, " {");
sb.AppendLineIndent(2, " var result = new Number4();");
sb.AppendLineIndent(2, " foreach (var context in executionContexts)");
GenerateSetRegisterValue(sb, instruction.Operands[0]);
sb.AppendLineIndent(2, " }");
sb.AppendLineIndent(2, " else");
sb.AppendLineIndent(2, " {");
sb.AppendLineIndent(2, " for (var i = 0; i < executionContexts.Length; i += 4)");
sb.AppendLineIndent(2, " {");
sb.AppendLineIndent(2, " var topLeft = {0};", GenerateGetOperandValue(instruction.Operands[1], NumberType.Float, "executionContexts[i + 0]"));
sb.AppendLineIndent(2, " var topRight = {0};", GenerateGetOperandValue(instruction.Operands[1], NumberType.Float, "executionContexts[i + 1]"));
sb.AppendLineIndent(2, " var bottomLeft = {0};", GenerateGetOperandValue(instruction.Operands[1], NumberType.Float, "executionContexts[i + 2]"));
sb.AppendLineIndent(2, " var bottomRight = {0};", GenerateGetOperandValue(instruction.Operands[1], NumberType.Float, "executionContexts[i + 3]"));
sb.AppendLineIndent(2, " ");
sb.AppendLineIndent(2, " var deltaX = Number4.Subtract(ref topRight, ref topLeft);");
sb.AppendLineIndent(2, " var deltaY = Number4.Subtract(ref bottomLeft, ref topLeft);");
sb.AppendLineIndent(2, " ");
sb.AppendLineIndent(2, " var result = textureSampler.SampleGrad(srcResource, srcSampler, ref topLeft, ref deltaX, ref deltaY);");
GenerateSetRegisterValue(sb, instruction.Operands[0], "executionContexts[i + 0]");
sb.AppendLineIndent(2, " ");
sb.AppendLineIndent(2, " result = textureSampler.SampleGrad(srcResource, srcSampler, ref topRight, ref deltaX, ref deltaY);");
GenerateSetRegisterValue(sb, instruction.Operands[0], "executionContexts[i + 1]");
sb.AppendLineIndent(2, " ");
sb.AppendLineIndent(2, " result = textureSampler.SampleGrad(srcResource, srcSampler, ref bottomLeft, ref deltaX, ref deltaY);");
GenerateSetRegisterValue(sb, instruction.Operands[0], "executionContexts[i + 2]");
sb.AppendLineIndent(2, " ");
sb.AppendLineIndent(2, " result = textureSampler.SampleGrad(srcResource, srcSampler, ref bottomRight, ref deltaX, ref deltaY);");
GenerateSetRegisterValue(sb, instruction.Operands[0], "executionContexts[i + 3]");
sb.AppendLineIndent(2, " ");
sb.AppendLineIndent(2, " }");
sb.AppendLineIndent(2, " }");
sb.AppendLineIndent(2, "}");
break;
default:
throw new InvalidOperationException(instruction.OpcodeType + " is not yet supported.");
}
}