UDumpMaterialExpressionInfoCommandlet

Navigation

API > API/Editor > API/Editor/UnrealEd

Finds all instances of material expressions and dumps their data to a csv.CUSTOM HLSL EXAMPLE

You can dump all custom hlsl nodes and their code with ` -dx12 -run=DumpMaterialExpressionInfo -unattended -expression=MaterialExpressionCustom -columns=Code -csv=C:/output.csv_

The output can then be loaded into sqlite for querying with .separator "," .import C:/output.csv tbl csv .save output.db Then you can, for example, order by hlsl snippet length: SELECT * FROM tbl ORDER BY length(Code)

This can also be connected to R to do analysis: install.packages("RSQLite") library(RSQLite) conn <- dbConnect(RSQLite::SQLite(), "output.db") For example, a histogram of snippet length: result <- dbGetQuery(conn, "SELECT length(Code) FROM tbl") hist(result$length(Code)_) Or a treemap showing which folders and assets have the most custom HLSL code nodes result <- dbGetQuery(conn, "SELECT Name,length(Code) FROM tbl") name <- strsplit(result$Name, "/") Get maximum number of path segments name_max_length <- max(sapply(name, length)) Make every asset path have the same number of segments (columns) name_padded_list <- lapply(name, function(x) { length(x) <- name_max_length return(x) }) Convert to matrix, trim empty space from front name_matrix <- do.call(rbind, name_padded_list) name_matrix <- name_matrix[,-1] Make treemap df <- as.data.frame(name_matrix) To weight by volume of code instead of number of nodes, use df$Value <- result$length(Code) df$Value <- rep(1, times=length(result$`length(Code))) treemap(df, index = c("V1", "V2", "V3"), vSize="Value")

Syntax

UCLASS (Config=Editor)  
class UDumpMaterialExpressionInfoCommandlet : public UCommandlet  
Copy full snippet

UCLASS (Config=Editor) class UDumpMaterialExpressionInfoCommandlet : public UCommandlet

Inheritance Hierarchy

• UObjectBase → UObjectBaseUtility → UObject → UCommandlet → UDumpMaterialExpressionInfoCommandlet

Constructors

Functions

Public

Overridden from UCommandlet