They should only be singly-assigned.
This is required because consts can hold pointers, but
var's cannot. And we need to support pointer arguments.
Bug: tint:275
Change-Id: I00a58734725bd08d40df71c736854a93c364a33c
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/30923
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Both sampler types generate an `OpTypeSampler` in SPIR-V so we need to
make sure they're considered duplicates in the SPIR-V backend. This CL
registers the generated ID with for both sampler type_names when either
one is emitted.
Bug: tint:272
Change-Id: If459bbb34fe8670a7e29d101686b70bf83b184c2
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/30662
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Commit-Queue: David Neto <dneto@google.com>
Reviewed-by: David Neto <dneto@google.com>
This CL adds the parsing of structs with names. The parsing of type
aliased structs remains to allow for migration to the new system. The
named struct format is always emitted.
Bug: tint:175
Change-Id: Ic0579dedbd2dd0edc7dfd30bc2ec02972091e718
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/30341
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Reviewed-by: David Neto <dneto@google.com>
This CL changes the AST dumping order to emit alias types before global
variables. This makes the output easier to read as the types come before
the usages.
Bug: tint:175
Change-Id: Ib7325384b910472e89d6d01853503be989ce4210
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/30281
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
This CL moves the StructType name into the constructor of the struct
type instead of receiving through an accessor. The |set_name| accessor
is removed as it should not be needed anymore. All call sites have been
updated.
The vertex pulling transform was fixed to correctly register an alias
for the structure being created so it will be emitted.
Bug: tint:175
Change-Id: I8802931d9bdbc6c2f12982eea9032931939d195c
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/30280
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
The change from `cast` to type constructor casts causes our current
determination if a constructor is constant to no longer be correct.
This Cl updates the determination to match the current spec and adds a
bunch of unit tests to verify the behaviour..
Bug: tint:270
Change-Id: I8ce74eb7c3f849ce62815868313449d8ca2de6be
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/30020
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Sarah Mashayekhi <sarahmashay@google.com>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Currently, if we access an array of non-scalar items we'll incorrectly
emit an OpVectorExtractDynamic which will fail as the result is not
scalar.
This CL updates the array accessor code such that if the base array is
an array of non-scalars we'll do load of the array and then access chain
into the loaded variable.
Bug: tint:267
Change-Id: Ia4d7052b57d8b31b835714b7b922c7859e3dce1f
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29844
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Commit-Queue: David Neto <dneto@google.com>
Reviewed-by: David Neto <dneto@google.com>
The push_preamble method was dealing with multiple sections of the
SPIR-V binary layout. As we changed the way things write (like
extensions getting written later) the preamble section was ending up in
incorrect order.
This CL replaces push_preamble with push methods for each of the
sections at the start of the SPIR-V module which should fixup the
ordering issue.
Bug: tint:267
Change-Id: Ib73a66d0fdb2c67dd6e80582289dd18475fad9f9
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29841
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
This CL updates the WGSL parser to allow array decorations to accept
multiple blocks. The stride decoration on arrays was turned into a
proper decoration object instead of just storing the stride directly.
Bug: tint:240
Change-Id: I6cdc7400d8847e3e043b846ea5c9f86cb795cf86
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29780
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Reviewed-by: Sarah Mashayekhi <sarahmashay@google.com>
Reviewed-by: David Neto <dneto@google.com>
This CL adds specialization to the HLSL backend. The specialization is
emulated using defined preprocessor macros.
Bug: tint:154
Change-Id: I73ab42360558967eee9a0da6bbe74d513fe4cc57
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29720
Commit-Queue: David Neto <dneto@google.com>
Reviewed-by: David Neto <dneto@google.com>
Currently if a constructor contains constructors we consider it const.
This falls down with the new type constructor syntax if the types don't
match. In the case they don't match we no longer consider the
constructor const as we'll generate OpBitcast and OpCopyObject
instructions which we need to build the composite from.
Bug: tint: 263
Change-Id: Ic85f58c8410e862a2ec30c7d93c9b87a61822f6d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29523
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Reviewed-by: David Neto <dneto@google.com>
All of the OpEntryPoint declarations must come before OpExecutionMode.
Currently if you have multiple fragment shaders we'll interleave the
OpEntryPoint and OpExeutionMode which will fail to validate.
Bug: tint:263
Change-Id: I7c925cf6b5345c03bfaf1aa15115caa1bdb9af4c
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29522
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Reviewed-by: David Neto <dneto@google.com>
This CL moves the visibility=hidden directive from the top level applied
flags to libtint specifically. This fixes up an issue between
SPIRV-Tools and the sample app when using std::rfind which ends up with
different visibility.
Change-Id: Ib06949b3755db66027d3656d3d6ce2504bfda81e
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29460
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Commit-Queue: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
This CL makes the AST type format name match the WGSL name so the
overloaded operator<< can be used in the WGSL writer. This removes a
bunch of duplication of WGSL type format name strings.
Bug: tint:230
Change-Id: I14aaefd21ced267ceed31f21faba3bd291275f0d
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29402
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Commit-Queue: dan sinclair <dsinclair@chromium.org>
This class is used to examine a module and get information about its
contents. This is the getting side of shader of reflection. Future
work will add transforms that perform the setting side of reflection.
In addition to the basic class and infrastructure, this CL adds a
GetEntryPoints() function demonstrate it works. More functionality
will be added in later CLs.
BUG=tint:257
Change-Id: If41dbb6c93302e0332754c086c75729d6ffe04d0
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29320
Commit-Queue: dan sinclair <dsinclair@chromium.org>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
Reviewed-by: David Neto <dneto@google.com>
In WGSL you can provide a constant_id variable without a constructor. In
SPIR-V we must synthesize a constant to attach the SpecId too. This CL
adds that variable creation.
Bug: tint:254
Change-Id: I2f25fdc3cb7e2c9c0f9e2129885865bd24298416
Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/29200
Commit-Queue: Sarah Mashayekhi <sarahmashay@google.com>
Reviewed-by: Sarah Mashayekhi <sarahmashay@google.com>
