public string GenerateCode(NodeHelper <TranslatedMaterialGraph.NodeInfo> node)
{
if (node.Type == NodeTypes.Special.Variable)
{
return(GenerateVarCode(node));
}
if (node.Extra.Define.IsIfDef)
{
return(GenerateIfDef(node));
}
//if (node.Type == NodeTypes.Texture2DSampler2DVec2
// || node.Type == NodeTypes.Texture2DSampler2DVec2Float
// || node.Type == NodeTypes.TextureCubeSamplerCubeVec3
// || node.Type == NodeTypes.TextureCubeSamplerCubeVec3Float
// )
//{
// if (node.InputPins["sampler"].Links.Count == 0)
// {
// return "vec4(0.0,0.0,0.0,0.0)";
// }
//}
var args = node.InputPins.Select(_ => GenerateCode(_)).ToList();
if (NodeTypes.IsConnectorType(node.Type))
{
return(args[0]);
}
if (NodeTypes.IsIfDefType(node.Type))
{
throw new InvalidOperationException("ifdef should be handeled at var code path");
}
if (node.Type == NodeTypes.VertexData)
{
return("i" + node.OutputPins[0].Id);
}
if (NodeTypes.IsAttribute(node.Type))
{
if (node.Name == "BlendIndices")
{
return("ivec4(i" + node.Name + ")");
}
return("i" + node.Name);
}
if (NodeTypes.IsUniform(node.Type))
{
return("c" + node.Name);
}
if (NodeTypes.IsParameter(node.Type))
{
return("c" + node.Name);
}
string constType;
if (NodeTypes._constants.TryGetValue(node.Type, out constType))
{
return(GetConstantValue(node.Value, constType));
}
switch (node.Type)
{
case NodeTypes.Function:
return(node.Name + "(" + string.Join(",", args) + ")");
case NodeTypes.Special.Default:
return(GenerateDefaultValue(node.OutputPins[0].Type));
case NodeTypes.Special.ShadowMapOutput:
_writer.WriteLine(null, " #ifdef VSM_SHADOW");
_writer.WriteLine(null, " float depth = " + args[0] + ".x / " + args[0] + ".y * 0.5 + 0.5;");
_writer.WriteLine(null, " gl_FragColor = vec4(depth, depth * depth, 1.0, 1.0);");
_writer.WriteLine(null, " #else");
_writer.WriteLine(null, " gl_FragColor = vec4(1.0);");
_writer.WriteLine(null, " #endif");
return(null);
case NodeTypes.Special.FinalColor:
_writer.WriteLine(null, "gl_FragColor = " + args[0] + ";");
return(null);
case NodeTypes.Special.FragData0:
_writer.WriteLine(null, "gl_FragData[0] = " + args[0] + ";");
return(null);
case NodeTypes.Special.FragData1:
_writer.WriteLine(null, "gl_FragData[1] = " + args[0] + ";");
return(null);
case NodeTypes.Special.FragData2:
_writer.WriteLine(null, "gl_FragData[2] = " + args[0] + ";");
return(null);
case NodeTypes.Special.FragData3:
_writer.WriteLine(null, "gl_FragData[3] = " + args[0] + ";");
return(null);
case NodeTypes.FragCoord:
return("gl_FragCoord");
case NodeTypes.FrontFacing:
return("gl_FrontFacing");
case NodeTypes.LightColor:
case NodeTypes.Opacity:
case NodeTypes.AmbientColor:
case NodeTypes.RefractionColor:
case NodeTypes.PerPixelFloat:
case NodeTypes.PerPixelVec2:
case NodeTypes.PerPixelVec3:
case NodeTypes.PerPixelVec4:
return(args[0]);
case NodeTypes.ObjectData:
case NodeTypes.LightData:
case NodeTypes.CameraData:
case NodeTypes.ZoneData:
throw new InvalidOperationException(
"This code shouldn't be executed. All uniforms must be split into individual nodes on preprocessing.");
case NodeTypes.Special.SetVarying: {
var arg = args[0];
var actualType = GetType(node.InputPins[0].Type);
var varyingType = GetVaryingType(node.InputPins[0].Type);
if (actualType != varyingType)
{
arg = varyingType + "(" + arg + ")";
}
var connectedNode = node.InputPins[0].ConnectedPins.FirstOrDefault()?.Node;
if (connectedNode != null && addComments)
{
_writer.WriteLine(null,
"// based on node " + connectedNode.Name + " " + connectedNode.Value + " (type:" + connectedNode.Type +
", id:" + connectedNode.Id + "), cost estimation: " + connectedNode.Extra.EstimatedCost);
}
_writer.WriteLine(node.Extra.Define.Expression, "v" + node.Value + " = " + arg + ";");
}
return(null);
case NodeTypes.Discard:
_writer.WriteLine(null, "if (" + args[0] + ") discard;");
return(null);
case NodeTypes.Special.GetVarying: {
var arg = "v" + node.Value;
var actualType = GetType(node.OutputPins[0].Type);
var varyingType = GetVaryingType(node.OutputPins[0].Type);
if (actualType != varyingType)
{
arg = actualType + "(" + arg + ")";
}
return(arg);
}
case NodeTypes.Sampler2D:
case NodeTypes.Sampler3D:
case NodeTypes.SamplerCube:
return(GetSamplerName(node));
//_writer.WriteLine("uniform "+node.OutputPins.First().Type+" s" + GetSamplerName(node) + ";");
case NodeTypes.BreakVec4ToVec3AndFloat:
case NodeTypes.BreakVec3ToVec2AndFloat:
case NodeTypes.BreakVec4ToVec2AndVec2:
case NodeTypes.BreakVec4ToVec2AndFloats:
case NodeTypes.BreakVec2:
case NodeTypes.BreakVec3:
case NodeTypes.BreakVec4:
if (node.OutputPins.Count != 1)
{
throw new InvalidOperationException(node + " expected to have a single output.");
}
return(args[0] + "." + node.OutputPins[0].Id.ToLower());
case NodeTypes.MultiplyFloatFloat:
case NodeTypes.MultiplyVec2Float:
case NodeTypes.MultiplyVec3Float:
case NodeTypes.MultiplyVec4Float:
case NodeTypes.MultiplyVec2Vec2:
case NodeTypes.MultiplyVec3Vec3:
case NodeTypes.MultiplyVec4Vec4:
case NodeTypes.MultiplyVec4Mat4:
case NodeTypes.MultiplyVec3Mat3:
case NodeTypes.MultiplyMat3Vec3:
case NodeTypes.MultiplyMat4x3Float:
case NodeTypes.MultiplyMat4Float:
return(GenBinaryOperator("*", args));
case NodeTypes.MultiplyVec4Mat4x3:
return("(" + GenBinaryOperator("*", args) + ").xyz");
//case NodeTypes.MultiplyVec3Mat4:
//case NodeTypes.MultiplyVec3Mat4x3:
// return GenBinaryOperator("*", new []{ "vec4("+args[0]+", 1.0)", args[1] });
case NodeTypes.AddFloatFloat:
case NodeTypes.AddVec2Vec2:
case NodeTypes.AddVec3Vec3:
case NodeTypes.AddVec4Vec4:
case NodeTypes.AddMat4Mat4:
case NodeTypes.AddMat4x3Mat4x3:
return(GenBinaryOperator("+", args));
case NodeTypes.SubtractFloatFloat:
case NodeTypes.SubtractVec2Vec2:
case NodeTypes.SubtractVec3Vec3:
case NodeTypes.SubtractVec4Vec4:
return(GenBinaryOperator("-", args));
case NodeTypes.MinusFloat:
case NodeTypes.MinusVec2:
case NodeTypes.MinusVec3:
case NodeTypes.MinusVec4:
return(GenUnaryOperator("-", args));
case NodeTypes.SaturateFloat:
return("clamp(" + args[0] + ", 0.0, 1.0)");
case NodeTypes.SaturateVec2:
return("clamp(" + args[0] + ", vec2(0.0, 0.0), vec2(1.0, 1.0))");
case NodeTypes.SaturateVec3:
return("clamp(" + args[0] + ", vec3(0.0, 0.0, 0.0), vec3(1.0, 1.0, 1.0))");
case NodeTypes.SaturateVec4:
return("clamp(" + args[0] + ", vec4(0.0, 0.0, 0.0, 0.0), vec4(1.0, 1.0, 1.0, 1.0))");
case NodeTypes.DivideFloatFloat:
case NodeTypes.DivideVec2Float:
case NodeTypes.DivideVec3Float:
case NodeTypes.DivideVec4Float:
case NodeTypes.DivideVec2Vec2:
case NodeTypes.DivideVec3Vec3:
case NodeTypes.DivideVec4Vec4:
return(GenBinaryOperator("/", args));
case NodeTypes.TernaryFloat:
case NodeTypes.TernaryVec2:
case NodeTypes.TernaryVec3:
case NodeTypes.TernaryVec4:
return("((" + args[0] + ")?(" + args[1] + "):(" + args[2] + "))");
case NodeTypes.MakeVec4FromVec3:
return(node.OutputPins[0].Type + "(" + string.Join(", ", args) + ", 1.0)");
case NodeTypes.MakeMat4x3FromVec4Vec4Vec4:
return("mat4(" + string.Join(", ", args) + ", vec4(0.0, 0.0, 0.0, 1.0))");
case NodeTypes.MakeVec4FromVec3AndFloat:
case NodeTypes.MakeVec4FromVec2AndVec2:
case NodeTypes.MakeVec3FromVec2AndFloat:
case NodeTypes.MakeVec2:
case NodeTypes.MakeVec3:
case NodeTypes.MakeVec4:
case NodeTypes.MakeMat3FromVec3Vec3Vec3:
return(node.OutputPins[0].Type + "(" + string.Join(", ", args) + ")");
case NodeTypes.MakeMat3FromMat4:
case NodeTypes.MakeMat3FromMat4x3:
return("GetNormalMatrix(" + string.Join(", ", args) + ")");
case NodeTypes.SampleVSMShadow:
return("texture2D(" + string.Join(", ", args) + ").rg");
case NodeTypes.SkinMatrixIndex:
return("mat4(" + args[0] + "[" + args[1] + "*3], " +
args[0] + "[" + args[1] + "*3+1]," +
args[0] + "[" + args[1] + "*3+2], vec4(0.0, 0.0, 0.0, 1.0))");
case NodeTypes.LightMatricesIndex:
case NodeTypes.VertexLightsIndex:
return(args[0] + "[" + args[1] + "]");
case NodeTypes.PositionOutput:
return(args[0]);
case NodeTypes.LessThanFloatFloat:
return(GenBinaryOperator("<", args));
case NodeTypes.NotBool:
return("!(" + args[0] + ")");
case NodeTypes.EqualFloatFloat:
return(GenBinaryOperator("==", args));
case NodeTypes.NotEqualFloatFloat:
return(GenBinaryOperator("!=", args));
case NodeTypes.GreaterThanFloatFloat:
return(GenBinaryOperator(">", args));
case NodeTypes.LessThanEqualFloatFloat:
return(GenBinaryOperator("<=", args));
case NodeTypes.GreaterThanEqualFloatFloat:
return(GenBinaryOperator(">=", args));
case NodeTypes.AndAlso:
return(GenBinaryOperator("&&", args));
case NodeTypes.OrElse:
return(GenBinaryOperator("||", args));
default:
var bracketIndex = node.Type.IndexOf("(");
if (bracketIndex > 0)
{
return(node.Type.Substring(0, bracketIndex) + "(" + string.Join(", ", args) + ")");
}
throw new MaterialCompilationException("Node " + node.Type + " isn't implemented yet.", node.Id);
}
}