public virtual void PrepareShader()
{
lastShaderCode = null;
if (OutputNode == null)
{
return;
}
List <Node> ordered = OrderNodesForShader();
string frag = "#version 330 core\r\n"
+ "out vec4 FragColor;\r\n"
+ "in vec2 UV;\r\n"
+ "const float PI = 3.14159265359;\r\n"
+ "const float Rad2Deg = (180.0 / PI);\r\n"
+ "const float Deg2Rad = (PI / 180.0);\r\n"
+ "const float RandomSeed = " + randomSeed + ";\r\n"
+ "uniform sampler2D Input0;\r\n"
+ "uniform sampler2D Input1;\r\n"
+ "uniform sampler2D Input2;\r\n"
+ "uniform sampler2D Input3;\r\n"
+ GLSLHash;
int count = calls.Count;
for (int i = 0; i < count; i++)
{
CallNode m = calls[i];
if (m.selectedFunction == this)
{
continue;
}
string s = m.GetFunctionShaderCode();
if (string.IsNullOrEmpty(s))
{
return;
}
if (frag.IndexOf(s) == -1)
{
frag += s;
}
}
frag += "void main() {\r\n";
string intern = GetInternalShaderCode(ordered);
if (string.IsNullOrEmpty(intern))
{
return;
}
frag += intern + "}";
//one last check to verify the output actually has the expected output
if (!HasExpectedOutput)
{
return;
}
lastShaderCode = frag;
}
public virtual string GetFunctionShaderCode()
{
if (OutputNode == null)
{
return("");
}
string otherCalls = "";
string frag = "";
List <Node> ordered = OrderNodesForShader();
//this is in case this function references
//other functions
int count = calls.Count;
for (int i = 0; i < count; i++)
{
CallNode m = calls[i];
//no need to recreate the function
//if it is a recursive function!
if (m.selectedFunction == this)
{
continue;
}
string s = m.GetFunctionShaderCode();
if (string.IsNullOrEmpty(s))
{
return("");
}
if (otherCalls.IndexOf(s) == -1)
{
otherCalls += s;
}
}
NodeType?outtype = GetOutputType();
if (outtype == null)
{
return("");
}
if (outtype.Value == NodeType.Float4 ||
outtype.Value == NodeType.Color ||
outtype.Value == NodeType.Gray)
{
frag += "vec4 ";
}
else if (outtype.Value == NodeType.Float3)
{
frag += "vec3 ";
}
else if (outtype.Value == NodeType.Float2)
{
frag += "vec2 ";
}
else if (outtype.Value == NodeType.Float)
{
frag += "float ";
}
else if (outtype.Value == NodeType.Bool)
{
frag += "bool ";
}
else if (outtype.Value == NodeType.Matrix)
{
frag += "mat4 ";
}
else
{
return("");
}
frag += Name.Replace(" ", "").Replace("-", "_") + "(";
count = args.Count;
for (int i = 0; i < count; i++)
{
ArgNode a = args[i];
if (a.InputType == NodeType.Float)
{
frag += "float " + a.InputName + ",";
}
else if (a.InputType == NodeType.Float2)
{
frag += "vec2 " + a.InputName + ",";
}
else if (a.InputType == NodeType.Float3)
{
frag += "vec3 " + a.InputName + ",";
}
else if (a.InputType == NodeType.Float4 || a.InputType == NodeType.Color || a.InputType == NodeType.Gray)
{
frag += "vec4 " + a.InputName + ",";
}
else if (a.InputType == NodeType.Bool)
{
frag += "bool " + a.InputName + ",";
}
else if (a.InputType == NodeType.Matrix)
{
frag += "mat4 " + a.InputName + ",";
}
}
if (args.Count > 0)
{
frag = frag.Substring(0, frag.Length - 1) + ") {\r\n";
}
else
{
frag += ") {\r\n";
}
string intern = GetInternalShaderCode(ordered, frag, true);
if (string.IsNullOrEmpty(intern))
{
return("");
}
frag = intern + "}\r\n\r\n";
return(otherCalls + frag);
}
