void AddPreview(INode node)
{
var shaderData = new PreviewShaderData
{
node = node
};
var renderData = new PreviewRenderData
{
shaderData = shaderData,
renderTexture = new RenderTexture(200, 200, 16, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Default)
{
hideFlags = HideFlags.HideAndDontSave
}
};
renderData.renderTexture.Create();
Set(m_Identifiers, node.tempId, node.tempId);
Set(m_RenderDatas, node.tempId, renderData);
m_DirtyShaders.Add(node.tempId.index);
node.RegisterCallback(OnNodeModified);
if (node.RequiresTime())
{
m_TimeDependentPreviews.Add(node.tempId.index);
}
var masterNode = node as IMasterNode;
if (masterRenderData.shaderData == null && masterNode != null)
{
masterRenderData.shaderData = shaderData;
}
}
void AddPreview(AbstractMaterialNode node)
{
var isMaster = false;
if (node is IMasterNode || node is SubGraphOutputNode)
{
// we don't build preview render data for output nodes that aren't the active output node
if (masterRenderData != null || (node is IMasterNode && node != node.owner.outputNode))
{
return;
}
isMaster = true;
}
var renderData = new PreviewRenderData
{
renderTexture =
new RenderTexture(200, 200, 16, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Default)
{
hideFlags = HideFlags.HideAndDontSave
}
};
if (isMaster)
{
m_MasterRenderData = renderData;
renderData.renderTexture.width = renderData.renderTexture.height = 400;
}
renderData.renderTexture.Create();
var shaderData = new PreviewShaderData
{
node = node,
passesCompiling = 0,
isOutOfDate = true,
hasError = false,
};
renderData.shaderData = shaderData;
m_RenderDatas.Add(node.objectId, renderData);
node.RegisterCallback(OnNodeModified);
if (node.RequiresTime())
{
m_RefreshTimedNodes = true;
}
if (m_MasterRenderData == renderData && onPrimaryMasterChanged != null)
{
onPrimaryMasterChanged();
}
m_NodesNeedsRecompile.Add(node);
}
void CheckForErrors(PreviewShaderData shaderData)
{
shaderData.hasError = ShaderUtil.ShaderHasError(shaderData.shader);
if (shaderData.hasError)
{
var messages = ShaderUtil.GetShaderMessages(shaderData.shader);
if (messages.Length > 0)
{
m_Messenger.AddOrAppendError(this, shaderData.node.objectId, messages[0]);
}
}
}
void AddPreview(AbstractMaterialNode node)
{
var renderData = new PreviewRenderData
{
renderTexture =
new RenderTexture(200, 200, 16, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Default)
{
hideFlags = HideFlags.HideAndDontSave
}
};
if (masterRenderData == null && (node is IMasterNode || node is SubGraphOutputNode))
{
m_MasterRenderData = renderData;
renderData.renderTexture.width = renderData.renderTexture.height = 400;
}
renderData.renderTexture.Create();
var shaderData = new PreviewShaderData
{
node = node,
isCompiling = false,
hasError = false,
shader = ShaderUtil.CreateShaderAsset(k_EmptyShader, false)
};
shaderData.shader.hideFlags = HideFlags.HideAndDontSave;
shaderData.mat = new Material(shaderData.shader)
{
hideFlags = HideFlags.HideAndDontSave
};
renderData.shaderData = shaderData;
Set(m_Identifiers, node.tempId, node.tempId);
Set(m_RenderDatas, node.tempId, renderData);
node.RegisterCallback(OnNodeModified);
if (node.RequiresTime())
{
m_RefreshTimedNodes = true;
}
if (m_MasterRenderData == renderData && onPrimaryMasterChanged != null)
{
onPrimaryMasterChanged();
}
m_NodesToUpdate.Add(node);
}
void AddPreview(INode node)
{
var shaderData = new PreviewShaderData
{
node = node,
shader = m_UberShader
};
var renderData = new PreviewRenderData
{
shaderData = shaderData,
renderTexture = new RenderTexture(200, 200, 16, RenderTextureFormat.ARGB32, RenderTextureReadWrite.Default)
{
hideFlags = HideFlags.HideAndDontSave
},
};
renderData.renderTexture.Create();
Set(m_Identifiers, node.tempId, node.tempId);
Set(m_RenderDatas, node.tempId, renderData);
node.RegisterCallback(OnNodeModified);
var isMaster = node is IMasterNode;
if (masterRenderData.shaderData == null &&
(isMaster || node is SubGraphOutputNode))
{
masterRenderData.shaderData = shaderData;
// If it's actually the master, clear the shader since it will be assigned
// later. SubGraphOutputNode still needs the UberShader.
if (isMaster)
{
masterRenderData.shaderData.shader = null;
}
}
m_NeedShaderUpdate = true;
}
void ProcessCompletedShaderCompilations()
{
// Check for shaders that finished compiling and set them to redraw
using (ProcessCompletedShaderCompilationsMarker.Auto())
using (var nodesCompiled = PooledHashSet <AbstractMaterialNode> .Get())
{
foreach (var node in m_NodesCompiling)
{
PreviewRenderData renderData = GetPreviewRenderData(node);
PreviewShaderData shaderData = renderData.shaderData;
Assert.IsTrue(shaderData.passesCompiling > 0);
if (shaderData.passesCompiling != renderData.shaderData.mat.passCount)
{
// attempt to re-kick the compilation a few times
compileFailRekicks++;
if (compileFailRekicks <= 3)
{
renderData.shaderData.passesCompiling = 0;
m_NodesNeedsRecompile.Add(node);
nodesCompiled.Add(node);
continue;
}
else if (compileFailRekicks == 4)
{
Debug.LogWarning("Unexpected error in compiling preview shaders: some previews might not update. You can try to re-open the Shader Graph window, or select <b>Help > Report a Bug</b> in the menu and report this bug.");
}
}
// check that all passes have compiled
var allPassesCompiled = true;
for (var i = 0; i < renderData.shaderData.mat.passCount; i++)
{
if (!ShaderUtil.IsPassCompiled(renderData.shaderData.mat, i))
{
allPassesCompiled = false;
break;
}
}
if (!allPassesCompiled)
{
continue;
}
// Force the material to re-generate all it's shader properties, by reassigning the shader
renderData.shaderData.mat.shader = renderData.shaderData.shader;
renderData.shaderData.passesCompiling = 0;
renderData.shaderData.isOutOfDate = false;
CheckForErrors(renderData.shaderData);
nodesCompiled.Add(renderData.shaderData.node);
var masterNode = renderData.shaderData.node as IMasterNode;
masterNode?.ProcessPreviewMaterial(renderData.shaderData.mat);
}
// removed compiled nodes from compiling list
m_NodesCompiling.ExceptWith(nodesCompiled);
// and add them to the draw list
m_NodesToDraw.UnionWith(nodesCompiled);
}
}