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MaterialGraph integration : Implement first draft for GetShader function

/scriptablerenderloop-materialgraph
Paul Demeulenaere 8 年前
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5c4b6aaf
共有 1 个文件被更改，包括 187 次插入 和 31 次删除
  1. 218
      Assets/ScriptableRenderLoop/HDRenderLoop/HDRenderLoop.cs

218
Assets/ScriptableRenderLoop/HDRenderLoop/HDRenderLoop.cs
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using System.Linq;
using UnityEditor;
using UnityEngine.MaterialGraph;
using UnityEngine.Graphing;
namespace UnityEngine.Experimental.ScriptableRenderLoop
{

public string shaderTemplate
{
get
{
var path = "Assets/ScriptableRenderLoop/HDRenderLoop/Shaders/Material/Lit/Lit.template";
if (!System.IO.File.Exists(path))
return "";
var content = System.IO.File.ReadAllText(path);
var regex = new System.Text.RegularExpressions.Regex("#include {1,}\"Assets/.*.template\"");
var innerRegex = new System.Text.RegularExpressions.Regex("\".*\"");
while (regex.IsMatch(content))
{
var match = regex.Match(content);
var includePath = innerRegex.Match(match.Value).Value;
includePath = includePath.Substring(1, includePath.Length - 2);
if (!System.IO.File.Exists(includePath))
{
Debug.Log("Cannot unroll Lit.template file");
return "";
}
var includeContent = string.Format("//Begin include : {0}\n{1}\n//End include : {0}", includePath, System.IO.File.ReadAllText(includePath));
content = content.Replace(match.Value, includeContent);
}
return content;
}
}
public AbstractHDRenderLoopMasterNode()
{
name = GetName();

public override string GetShader(MaterialOptions options, GenerationMode mode, out List<PropertyGenerator.TextureInfo> configuredTextures)
{
configuredTextures = new List<PropertyGenerator.TextureInfo>();
return "TODO";
var path = "Assets/ScriptableRenderLoop/HDRenderLoop/Shaders/Material/Lit/Lit.template";
if (!System.IO.File.Exists(path))
return "";
var templateText = System.IO.File.ReadAllText(path);
var regex = new System.Text.RegularExpressions.Regex("#include {1,}\"Assets/.*.template\"");
var innerRegex = new System.Text.RegularExpressions.Regex("\".*\"");
while (regex.IsMatch(templateText))
{
var match = regex.Match(templateText);
var includePath = innerRegex.Match(match.Value).Value;
includePath = includePath.Substring(1, includePath.Length - 2);
if (!System.IO.File.Exists(includePath))
{
Debug.Log("Cannot unroll Lit.template file");
return "";
}
var includeContent = string.Format("//Begin include : {0}\n{1}\n//End include : {0}", includePath, System.IO.File.ReadAllText(includePath));
templateText = templateText.Replace(match.Value, includeContent);
}
var activeNodeList = new List<INode>();
NodeUtils.DepthFirstCollectNodesFromNode(activeNodeList, this);
var vayrings = activeNodeList.Where(x => x is IRequiresMeshUV).Select(x =>
{
return new
{
attributeName = "meshUV0",
semantic = "TEXCOORD0",
vayringName = "meshUV0",
type = SlotValueType.Vector2,
code = "output.meshUV0 = input.meshUV0;"
};
});
vayrings.Concat(activeNodeList.Where(x => x is IRequiresNormal).Select(x =>
{
return new
{
attributeName = "normalOS",
semantic = "NORMAL",
vayringName = "normalWS",
type = SlotValueType.Vector3,
code = "output.normalWS = TransformObjectToWorldNormal(input.normalOS);"
};
}));
vayrings.Concat(activeNodeList.Where(x => x is IRequiresWorldPosition).Select(x =>
{
return new
{
attributeName = "",
semantic = "",
vayringName = "positionWS",
type = SlotValueType.Vector3,
code = "output.positionWS = TransformObjectToWorld(input.positionOS);"
};
}));
vayrings.Concat(activeNodeList.Where(x => x is IRequiresViewDirection).Select(x =>
{
return new
{
attributeName = "",
semantic = "",
vayringName = "viewDirectionWS",
type = SlotValueType.Vector3,
code = "output.viewDirectionWS = GetWorldSpaceNormalizeViewDir(TransformObjectToWorld(input.positionOS));"
};
}));
Func<SlotValueType, int> _fnTypeToSize = o =>
{
switch (o)
{
case SlotValueType.Vector1: return 1;
case SlotValueType.Vector2: return 2;
case SlotValueType.Vector3: return 3;
case SlotValueType.Vector4: return 4;
}
return 0;
};
var vayringsArray = vayrings.ToArray();
var packedVarying = new ShaderGenerator();
int totalSize = vayringsArray.Sum(x => _fnTypeToSize(x.type));
if (totalSize > 0)
{
var interpolatorCount = Mathf.Ceil((float)totalSize / 4.0f);
packedVarying.AddShaderChunk(string.Format("float4 interpolators[{0}] : TEXCOORD0;", (int)interpolatorCount), false);
}
var vayringVisitor = new ShaderGenerator();
var vertexAttributeVisitor = new ShaderGenerator();
var vertexShaderBodyVisitor = new ShaderGenerator();
var packInterpolatorVisitor = new ShaderGenerator();
var unpackInterpolatorVisitor = new ShaderGenerator();
int currentIndex = 0;
int currentChannel = 0;
foreach (var vayring in vayringsArray)
{
var typeSize = _fnTypeToSize(vayring.type);
if (!string.IsNullOrEmpty(vayring.attributeName))
{
vertexAttributeVisitor.AddShaderChunk(string.Format("float{0} {1} : {2};", typeSize, vayring.attributeName, vayring.semantic), true);
}
vertexShaderBodyVisitor.AddShaderChunk(vayring.code, false);
vayringVisitor.AddShaderChunk(string.Format("float{0} {1};", typeSize, vayring.vayringName), false);
for (int channel = 0; channel < typeSize; ++channel)
{
var packed = string.Format("interpolators[{0}][{1}]", currentIndex, currentChannel);
var source = string.Format("{0}[{1}]", vayring.vayringName, channel);
packInterpolatorVisitor.AddShaderChunk(string.Format("output.{0} = input.{1};", packed, source), false);
unpackInterpolatorVisitor.AddShaderChunk(string.Format("output.{0} = input.{1};", source, packed), false);
if (currentChannel == 3)
{
currentChannel = 0;
currentIndex++;
}
else
{
currentChannel++;
}
}
}
var shaderFunctionVisitor = new ShaderGenerator();
var shaderPropertiesVistor = new PropertyGenerator();
var propertyUsagesVisitor = new ShaderGenerator();
foreach (var node in activeNodeList.OfType<AbstractMaterialNode>())
{
if (node is IGeneratesFunction) (node as IGeneratesFunction).GenerateNodeFunction(shaderFunctionVisitor, mode);
if (node is IGenerateProperties)
{
(node as IGenerateProperties).GeneratePropertyBlock(shaderPropertiesVistor, mode);
(node as IGenerateProperties).GeneratePropertyUsages(propertyUsagesVisitor, mode);
}
}
var pixelShaderBodyVisitor = new ShaderGenerator();
var nodes = ListPool<INode>.Get();
NodeUtils.DepthFirstCollectNodesFromNode(nodes, this, null, NodeUtils.IncludeSelf.Exclude);
for (var i = 0; i < nodes.Count; i++)
{
var node = nodes[i];
if (node is IGeneratesBodyCode)
(node as IGeneratesBodyCode).GenerateNodeCode(pixelShaderBodyVisitor, mode);
}
ListPool<INode>.Release(nodes);
foreach (var slot in GetInputSlots<MaterialSlot>())
{
foreach (var edge in owner.GetEdges(slot.slotReference))
{
var outputRef = edge.outputSlot;
var fromNode = owner.GetNodeFromGuid<AbstractMaterialNode>(outputRef.nodeGuid);
if (fromNode == null)
continue;
pixelShaderBodyVisitor.AddShaderChunk("ouput." + slot.shaderOutputName + " = " + fromNode.GetVariableNameForSlot(outputRef.slotId) + ";", true);
}
}
var resultShader = templateText.Replace("${ShaderName}", GetType() + guid.ToString());
resultShader = resultShader.Replace("${VertexAttributes}", vertexAttributeVisitor.GetShaderString(1));
resultShader = resultShader.Replace("${VaryingAttributes}", vayringVisitor.GetShaderString(1));
resultShader = resultShader.Replace("${PackedVaryingAttributes}", packedVarying.GetShaderString(1));
resultShader = resultShader.Replace("${PackingVaryingCode}", packInterpolatorVisitor.GetShaderString(1));
resultShader = resultShader.Replace("${UnpackVaryingCode}", unpackInterpolatorVisitor.GetShaderString(1));
resultShader = resultShader.Replace("${ShaderPropertiesHeader}", shaderPropertiesVistor.GetShaderString(1));
resultShader = resultShader.Replace("${ShaderPropertyUsages}", propertyUsagesVisitor.GetShaderString(1));
resultShader = resultShader.Replace("${ShaderFunctions}", shaderFunctionVisitor.GetShaderString(1));
resultShader = resultShader.Replace("${PixelShaderBody}", pixelShaderBodyVisitor.GetShaderString(1));
resultShader = resultShader.Replace("${VertexShaderBody}", vertexShaderBodyVisitor.GetShaderString(1));
return System.Text.RegularExpressions.Regex.Replace(resultShader, @"\r\n|\n\r|\n|\r", Environment.NewLine);
}
}

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