# Change Log
## v0.6.3 (2021-09-08)
- Reduced heap allocations when generating WGSL, HLSL, and GLSL
- WGSL-in:
- support module-scope `let` type inference
- SPV-in:
- fix depth sampling with projection
- HLSL-out:
- fix local struct construction
- GLSL-out:
- fix `select()` order
- SPV-out:
- allow working around Adreno issue with `OpName`
## v0.6.2 (2021-09-01)
- SPV-out fixes:
- requested capabilities for 1D and cube images, storage formats
- handling `break` and `continue` in a `switch` statement
- avoid generating duplicate `OpTypeImage` types
- HLSL-out fixes:
- fix output struct member names
- MSL-out fixes:
- fix packing of fields in interface structs
- GLSL-out fixes:
- fix non-fallthrough `switch` cases
- GLSL-in fixes:
- avoid infinite loop on invalid statements
## v0.6.1 (2021-08-24)
- HLSL-out fixes:
- array arguments
- pointers to array arguments
- switch statement
- rewritten interface matching
- SPV-in fixes:
- array storage texture stores
- tracking sampling across function parameters
- updated petgraph dependencies
- MSL-out:
- gradient sampling
- GLSL-out:
- modulo operator on floats
## v0.6 (2021-08-18)
- development release for wgpu-0.10
- API:
- atomic types and functions
- storage access is moved from global variables to the storage class and storage texture type
- new built-ins: `primitive_index` and `num_workgroups`
- support for multi-sampled depth images
- WGSL:
- `select()` order of true/false is swapped
- HLSL backend is vastly improved and now usable
- GLSL frontend is heavily reworked
## v0.5 (2021-06-18)
- development release for wgpu-0.9
- API:
- barriers
- dynamic indexing of matrices and arrays is only allowed on variables
- validator now accepts a list of IR capabilities to allow
- improved documentation
- Infrastructure:
- much richer test suite, focused around consuming or emitting WGSL
- lazy testing on large shader corpuses
- the binary is moved to a sub-crate "naga-cli"
- Frontends:
- GLSL frontend:
- rewritten from scratch and effectively revived, no longer depends on `pomelo`
- only supports 440/450/460 versions for now
- has optional support for codespan messages
- SPIRV frontend has improved CFG resolution (still with issues unresolved)
- WGSL got better error messages, workgroup memory support
- Backends:
- general: better expression naming and emitting
- new HLSL backend (in progress)
- MSL:
- support `ArraySize` expression
- better texture sampling instructions
- GLSL:
- multisampling on GLES
- WGSL is vastly improved and now usable
### v0.4.2 (2021-05-28)
- SPIR-V frontend:
- fix image stores
- fix matrix stride check
- SPIR-V backend:
- fix auto-deriving the capabilities
- GLSL backend:
- support sample interpolation
- write out swizzled vector accesses
### v0.4.1 (2021-05-14)
- numerous additions and improvements to SPIR-V frontend:
- int8, in16, int64
- null constant initializers for structs and matrices
- `OpArrayLength`, `OpCopyMemory`, `OpInBoundsAccessChain`, `OpLogicalXxxEqual`
- outer product
- fix struct size alignment
- initialize built-ins with default values
- fix read-only decorations on struct members
- fix struct size alignment in WGSL
- fix `fwidth` in WGSL
- fix scalars arrays in GLSL backend
## v0.4 (2021-04-29)
- development release for wgpu-0.8
- API:
- expressions are explicitly emitted with `Statement::Emit`
- entry points have inputs in arguments and outputs in the result type
- `input`/`output` storage classes are gone, but `push_constant` is added
- `Interpolation` is moved into `Binding::Location` variant
- real pointer semantics with required `Expression::Load`
- `TypeInner::ValuePointer` is added
- image query expressions are added
- new `Statement::ImageStore`
- all function calls are `Statement::Call`
- `GlobalUse` is moved out into processing
- `Header` is removed
- entry points are an array instead of a map
- new `Swizzle` and `Splat` expressions
- interpolation qualifiers are extended and required
- struct member layout is based on the byte offsets
- Infrastructure:
- control flow uniformity analysis
- texture-sampler combination gathering
- `CallGraph` processor is moved out into `glsl` backend
- `Interface` is removed, instead the analysis produces `ModuleInfo` with all the derived info
- validation of statement tree, expressions, and constants
- code linting is more strict for matches
- new GraphViz `dot` backend for pretty visualization of the IR
- Metal support for inlined samplers
- `convert` example is transformed into the default binary target named `naga`
- lots of frontend and backend fixes
### v0.3.2 (2021-02-15)
- fix logical expression types
- fix _FragDepth_ semantics
- spv-in:
- derive block status of structures
- spv-out:
- add lots of missing math functions
- implement discard
### v0.3.1 (2021-01-31)
- wgsl:
- support constant array sizes
- spv-out:
- fix block decorations on nested structures
- fix fixed-size arrays
- fix matrix decorations inside structures
- implement read-only decorations
## v0.3 (2021-01-30)
- development release for wgpu-0.7
- API:
- math functions
- type casts
- updated storage classes
- updated image sub-types
- image sampling/loading options
- storage images
- interpolation qualifiers
- early and conservative depth
- Processors:
- name manager
- automatic layout
- termination analysis
- validation of types, constants, variables, and entry points
## v0.2 (2020-08-17)
- development release for wgpu-0.6
## v0.1 (2020-02-26)
- initial release