1.4.0

Major changes

• A new web UI, with a menu to select flags. It shows side-by-side how the shader with minified, with hypertext links to better track variables after renaming.
• Better support for interface blocks (#237).
• kkpView symbol generation for integration in kkpview (usable with kkrunchy and crinkler)
• Better minification through variable reuse, more inlining, more variable shadowing, and more.
• Better tracking of side-effects in the code, which leads to better and safer optimizations.
• Multithreading to make Shader Minifier faster when minifying multiple files together.
• A .NET API, for example if you want to plug the minifier in your C# tool.
• And a bunch of bug fixes!

What's Changed

Main changes include:

• Fix case parsing problem by @eldritchconundrum in #319
• Add basic support for interface blocks by @laurentlb in #335
• Fix #333, export kkpView symbol maps by @eldritchconundrum in #337
• Fix newline issue when declaring a type by @laurentlb in #336
• Update precedence of assign ops relative to the ternary operator by @laurentlb in #344
• Add debugging traces by @eldritchconundrum in #345
• Peephole optims, var scoping (fixes #153) by @eldritchconundrum in #349
• Pure rewrite improvements by @eldritchconundrum in #353
• Simplify a+-b and a--b by @laurentlb in #354
• Beautiful & advanced web UI by @laurentlb in #355
• Expose JS API by @laurentlb in #360
• In a declaration, parenthesis are mandatory around a comma operator by @eldritchconundrum in #363
• Parse decl-less layout as verbatim. Fixes #22, #29 by @eldritchconundrum in #364
• Reuse var by @eldritchconundrum in #367
• Generalize reuse by @eldritchconundrum in #368
• Detect more augmentable operators by @laurentlb in #369
• Reuse function parameters inside the function by @laurentlb in #370
• Augmentable operators optimization: * is not always commutative by @laurentlb in #372
• Augmentable operators optimization: * is commutative when an operand is scalar by @therontarigo in #377
• Use function purity analysis in expression purity by @eldritchconundrum in #379
• Reassignments by @eldritchconundrum in #380
• Fixes #385 by @eldritchconundrum in #386
• Support compound assignments in reassignment detection by @eldritchconundrum in #384
• Shadow variables inside loops and if statements by @laurentlb in #387
• distance(x,y) => length(x-y) by @laurentlb in #392
• Remove the --smoothstep flag by @laurentlb in #391
• Remove unnecessary parentheses between ? and : in ternary expressions by @therontarigo in #396
• Rewrite pow(x, 1.0) as x by @eldritchconundrum in #399
• Better handling of spaces in preprocessor directives by @laurentlb in #404
• Printer: add space between + and ++ by @laurentlb in #405
• Keep operand order when removing parens around + and - operators by @laurentlb in #406
• Fix aggressive inlining bug by @eldritchconundrum in #408
• Fixes #317, inlining bugs by @eldritchconundrum in #409
• Fix while rewriting bug by @eldritchconundrum in #410
• Optims by @eldritchconundrum in #411
• Inlining by @eldritchconundrum in #412
• C# API by @laurentlb in #425

New Contributors

• @therontarigo made their first contribution in #377

Full Changelog: 1.3.6...1.4.0

1.3.6

What's Changed

• Optimize decl+return into return by @eldritchconundrum in #283
• Fix bug 'not a swizzle' with custom struct by @laurentlb in #284
• Optimize useless assign before return by @eldritchconundrum in #288
• Sanely handle current function overloading limitations in inlining by @eldritchconundrum in #292
• Iterate remove unused functions by @eldritchconundrum in #293
• Fix potential unsafe swizzle optimizations by @jwatzman in #298
• Fix mutated idents in functions which are inlined more than once by @jwatzman in #299
• Argument inlining by @eldritchconundrum in #301
• Add ifdef in the output of c-array by @laurentlb in #304
• Fix precedence of the ?: operator by @laurentlb in #306
• Printer: use space before underscore by @laurentlb in #308

Full Changelog: 1.3.5...1.3.6

Shader Minifier 1.3.5

What's Changed

• Significant changes to the inlining heuristics by @eldritchconundrum and @laurentlb
• Respect no-renaming-list when renaming variables too by @laurentlb in #236
• Fix printing of array types by @laurentlb in #244
• Fix int overflow when simplifying vectors by @laurentlb in #246
• Apply vector simplification only when the number of arguments matches by @laurentlb in #251
• Use int64 instead of int32 in the AST by @laurentlb in #252
• vec: remove the useless swizzles in the last argument by @laurentlb in #253
• Initial implementation of a preprocessor, handles #ifdef by @laurentlb in #254
• Remove parentheses with unary minus by @laurentlb in #260
• Underscore is a letter by @laurentlb in #261
• Printer: put "else if" on a single line, for readability by @laurentlb in #262
• Printer: fix printing of do-while loops by @laurentlb in #263

Full Changelog: 1.3.4...1.3.5

Shader Minifier 1.3.4

What's Changed

Fix for #233 (unsafe vec optimization)

Full Changelog: 1.3.3...1.3.4

Shader Minifier 1.3.3

What's Changed

Main changes include:

• Augmented operators: x=x+... becomes x+= by @laurentlb in #206
• Change if statements to if expressions by @eldritchconundrum in #207
• Improve float minification by @eldritchconundrum in #210
• Fix constant ">=" simplification by @eldritchconundrum in #211
• if+return optimizations by @eldritchconundrum in #209
• Rewrite while into for, take opportunities to save semi-colons by @eldritchconundrum in #213
• Vector constructor: use float when it's shorter than the int by @laurentlb in #216
• NoMoveDeclarations is the default by @laurentlb in #217
• Use context-based renaming when minifying multiple files by @laurentlb in #219
• Shorten the generated header by @laurentlb in #220
• Eliminate "!" in condition by swapping if and else by @eldritchconundrum in #223
• New output format: Rust by @Kwarf in #227

New Contributors

• @Kwarf made their first contribution in #227

Full Changelog: 1.3.2...1.3.3

Shader Minifier 1.3.2

What's Changed

Main changes include:

• Preserve comments inside verbatim blocks by @laurentlb in #170
• Inlining: inline more variables by @laurentlb in #174
• Unused functions are removed by default by @eldritchconundrum in #182
• Optimize conditional expressions by @laurentlb in #183
• Arithmetic: better matching of int operations; disable the unsafe x*0 optimization by @laurentlb in #187
• Make PI detection a bit less sensitive by @laurentlb in #188
• Optimize vec constructors using swizzles by @laurentlb in #190
• Skip useless vec constructors by @laurentlb in #191
• Prefer ints instead of floats in the vec constructor by @laurentlb in #192
• Simplify call to vec when all arguments are equal by @laurentlb in #193
• Inline const values of type int,float,bool by @laurentlb in #194
• Apply the sequence operator trick only when it's useful by @laurentlb in #196
• Group declarations by @laurentlb in #197
• Disable dead code removal if there's a preprocessor directive by @laurentlb in #198
• Recursively remove unused functions by @laurentlb in #199

Full Changelog: 1.3.1...1.3.2

Shader Minifier 1.3.1

What's Changed

Main changes include:

• Support "precision" statements by @laurentlb in #161
• Aggro-inlining: don't inline variables with a prefix ++ or -- operator by @laurentlb in #164
• Fix stackoverflow error in simplifyExpr by @laurentlb in #165

Full Changelog: 1.3...1.3.1

Shader Minifier 1.3

What's Changed

(some changes, e.g. documentation, cleanup, or refactoring, are not included in this list)

• Support switch statements by @jwatzman in #132
• Iterate inlining and simplification until we can do no more by @jwatzman in #133
• Drop "in" qualifier from function parameters by @jwatzman in #134
• Add option to aggressively inline all literals and consts by @jwatzman in #136
• Add struct names to forbidden list by @jwatzman in #137
• Iterate inlining and simplification only when we actually inline by @jwatzman in #138
• Allow inlining one-line functions by @jwatzman in #139
• Macro names: preserve the case of the original variable names by @laurentlb in #148
• Fix dangling else bug by @laurentlb in #150
• Swap operands of commutative operators to reduce the number of parentheses by @laurentlb in #151
• Shader Minifier website using Bolero F# by @laurentlb in #155
• Support array types by @laurentlb in #159

New Contributors

• @virtualzavie made their first contribution in #131
• @jwatzman made their first contribution in #132

Full Changelog: 1.2...1.3

Shader Minifier 1.2

What's Changed

• Make Shader Minifier twice as fast by @laurentlb in #48
• Migrate option parser to Argu by @laurentlb in #50
• Use template string for JS output by @laurentlb in #53
• Fix parentheses when the comma operator is in a function call by @laurentlb in #57
• Rewriter: remove useless braces in a few more cases by @laurentlb in #61
• Parser: better support for HLSL geometry shaders by @laurentlb in #63
• README: Add proper documentation by @laurentlb in #64
• Rewrite the full pi constant as acos(-1.) by @eldritchconundrum in #66
• Fix -0.0 by @eldritchconundrum in #74
• Allow shadowing of external values by @laurentlb in #86
• Optimize the use of 2-letter characters by @laurentlb in #87
• Properly rename exported values in a multifile context by @laurentlb in #98
• New renaming strategy for when minifying multiple files by @laurentlb in #100
• New formatting output: indented text by @laurentlb in #109
• Inlining: automatically inline trivial values by @laurentlb in #112
• Improve float precision by @laurentlb in #117
• Add option to disable auto-inlining and document it by @laurentlb in #119
• Automatically remove unused local variables by @laurentlb in #120
• Even better formatting of floats by @laurentlb in #122

Full Changelog: 1.1.6...1.2

Shader Minifier 1.1.6

Bump version to 1.1.6