void UpdateShaders()
{
if (m_DirtyShaders.Any())
{
PropagateNodeSet(m_DirtyShaders);
var masterNodes = new List <INode>();
var colorNodes = new List <INode>();
var wireframeNodes = new List <INode>();
foreach (var index in m_DirtyShaders)
{
var node = m_Graph.GetNodeFromTempId(m_Identifiers[index]) as AbstractMaterialNode;
if (node == null)
{
continue;
}
var masterNode = node as IMasterNode;
if (masterNode != null)
{
masterNodes.Add(node);
}
else if (node.previewMode == PreviewMode.Wireframe)
{
wireframeNodes.Add(node);
}
else
{
colorNodes.Add(node);
}
}
var count = Math.Min(colorNodes.Count, 1) + masterNodes.Count;
try
{
var i = 0;
EditorUtility.DisplayProgressBar("Shader Graph", string.Format("Compiling preview shaders ({0}/{1})", i, count), 0f);
foreach (var node in masterNodes)
{
UpdateShader(node.tempId);
i++;
EditorUtility.DisplayProgressBar("Shader Graph", string.Format("Compiling preview shaders ({0}/{1})", i, count), 0f);
}
if (colorNodes.Count > 0)
{
var results = m_Graph.GetUberColorShader();
m_OutputIdName = results.outputIdProperty.referenceName;
ShaderUtil.UpdateShaderAsset(m_ColorShader, results.shader);
var debugOutputPath = DefaultShaderIncludes.GetDebugOutputPath();
if (debugOutputPath != null)
{
File.WriteAllText(debugOutputPath + "/ColorShader.shader", (results.shader ?? "null").Replace("UnityEngine.MaterialGraph", "Generated"));
}
bool uberShaderHasError = false;
if (MaterialGraphAsset.ShaderHasError(m_ColorShader))
{
var errors = MaterialGraphAsset.GetShaderErrors(m_ColorShader);
var message = new ShaderStringBuilder();
message.AppendLine(@"Preview shader for graph has {0} error{1}:", errors.Length, errors.Length != 1 ? "s" : "");
foreach (var error in errors)
{
INode node;
try
{
node = results.sourceMap.FindNode(error.line);
message.AppendLine("Shader compilation error in {3} at line {1} (on {2}):\n{0}", error.message, error.line, error.platform, node != null ? string.Format("node {0} ({1})", node.name, node.guid) : "graph");
message.AppendLine(error.messageDetails);
message.AppendNewLine();
}
catch
{
message.AppendLine("Shader compilation error in {3} at line {1} (on {2}):\n{0}", error.message, error.line, error.platform, "graph");
}
}
Debug.LogWarning(message.ToString());
ShaderUtil.ClearShaderErrors(m_ColorShader);
ShaderUtil.UpdateShaderAsset(m_ColorShader, k_EmptyShader);
uberShaderHasError = true;
}
foreach (var node in colorNodes)
{
var renderData = GetRenderData(node.tempId);
if (renderData == null)
{
continue;
}
var shaderData = renderData.shaderData;
shaderData.shader = m_ColorShader;
shaderData.hasError = uberShaderHasError;
}
i++;
EditorUtility.DisplayProgressBar("Shader Graph", string.Format("Compiling preview shaders ({0}/{1})", i, count), 0f);
}
}
finally
{
EditorUtility.ClearProgressBar();
}
// Union dirty shaders into dirty previews
m_DirtyPreviews.UnionWith(m_DirtyShaders);
m_DirtyShaders.Clear();
}
}
void UpdateShader(Identifier nodeId)
{
var node = m_Graph.GetNodeFromTempId(nodeId) as AbstractMaterialNode;
if (node == null)
{
return;
}
var renderData = Get(m_RenderDatas, nodeId);
if (renderData == null || renderData.shaderData == null)
{
return;
}
var shaderData = renderData.shaderData;
if (!(node is IMasterNode) && !node.hasPreview)
{
shaderData.shaderString = null;
}
else
{
var masterNode = node as IMasterNode;
if (masterNode != null)
{
List <PropertyCollector.TextureInfo> configuredTextures;
shaderData.shaderString = masterNode.GetShader(GenerationMode.Preview, node.name, out configuredTextures);
}
else
{
shaderData.shaderString = m_Graph.GetPreviewShader(node).shader;
}
}
var debugOutputPath = DefaultShaderIncludes.GetDebugOutputPath();
if (debugOutputPath != null)
{
File.WriteAllText(debugOutputPath + "/GeneratedShader.shader", (shaderData.shaderString ?? "null").Replace("UnityEngine.MaterialGraph", "Generated"));
}
if (string.IsNullOrEmpty(shaderData.shaderString))
{
if (shaderData.shader != null)
{
ShaderUtil.ClearShaderErrors(shaderData.shader);
Object.DestroyImmediate(shaderData.shader, true);
shaderData.shader = null;
}
return;
}
if (shaderData.shader == null)
{
shaderData.shader = ShaderUtil.CreateShaderAsset(shaderData.shaderString);
shaderData.shader.hideFlags = HideFlags.HideAndDontSave;
}
else
{
ShaderUtil.ClearShaderErrors(shaderData.shader);
ShaderUtil.UpdateShaderAsset(shaderData.shader, shaderData.shaderString);
}
// Debug output
if (MaterialGraphAsset.ShaderHasError(shaderData.shader))
{
var errors = MaterialGraphAsset.GetShaderErrors(shaderData.shader);
foreach (var error in errors)
{
Debug.LogFormat("Compilation error in {3} at line {1} (on {2}):\n{0}", error.message, error.line, error.platform, "graph");
}
shaderData.hasError = true;
if (debugOutputPath != null)
{
var message = "RecreateShader: " + node.GetVariableNameForNode() + Environment.NewLine + shaderData.shaderString;
Debug.LogWarning(message);
}
ShaderUtil.ClearShaderErrors(shaderData.shader);
Object.DestroyImmediate(shaderData.shader, true);
shaderData.shader = null;
}
else
{
shaderData.hasError = false;
}
}
void UpdateShaders()
{
if (!m_NeedShaderUpdate)
{
return;
}
try
{
EditorUtility.DisplayProgressBar("Shader Graph", "Compiling preview shaders", 0f);
foreach (var masterNode in m_Graph.GetNodes <IMasterNode>())
{
UpdateMasterNodeShader(masterNode.tempId);
}
EditorUtility.DisplayProgressBar("Shader Graph", "Compiling preview shaders", 0.5f);
// Reset error states for the UI, the shader, and all render data
m_Messenger.ClearAllFromProvider(this);
m_RenderDatas.ForEach(data =>
{
if (data != null)
{
data.shaderData.hasError = false;
}
});
var errNodes = new HashSet <INode>();
GenerationResults results;
var uberShaderHasError = GenerateUberShader(errNodes, out results);
if (uberShaderHasError)
{
errNodes = ProcessUberErrors(results);
// Also collect any nodes that had validation errors because they cause the uber shader to fail without
// putting valid entries in the source map so ProcessUberErrors doesn't find them.
errNodes.UnionWith(m_Graph.GetNodes <AbstractMaterialNode>().Where(node => node.hasError));
PropagateNodeList(errNodes, true);
// Try generating the shader again, excluding the nodes with errors (and descendants)
uberShaderHasError = GenerateUberShader(errNodes, out results);
if (uberShaderHasError)
{
Debug.LogWarning("Shader Graph compilation failed due to multiple errors. Resolve the visible errors to reveal more.");
}
foreach (var errNode in errNodes)
{
GetRenderData(errNode.tempId).shaderData.hasError = true;
}
}
var debugOutputPath = DefaultShaderIncludes.GetDebugOutputPath();
if (debugOutputPath != null)
{
File.WriteAllText(debugOutputPath + "/ColorShader.shader",
(results.shader ?? "null").Replace("UnityEngine.MaterialGraph", "Generated"));
}
m_NeedShaderUpdate = false;
}
finally
{
EditorUtility.ClearProgressBar();
}
}