Commit Graph

128 Commits

Author SHA1 Message Date
Ethan Nicholas
885c1d3048 Removed Position::Capture
It was decided that being able to report positions from C++ code is not
worth the cost of having all of these captures everywhere.

Change-Id: I94981d9f780bd95df8b56198210c9cdd5f16239c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/528366
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-04-08 17:26:24 +00:00
Ethan Nicholas
f125d4e7a0 Improved SkSL Block and Do position tracking
Blocks did not previously track their position, creating problems
reporting some errors (which will be improved in followup CLs). Fixing
block positions changed the reporting of do loop errors, requiring do
loop position tracking to be updated as part of this change.

Change-Id: I3bd048a62d912914edf679f42607de1b5eafc2b9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/528045
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-04-07 21:03:19 +00:00
Ethan Nicholas
a98e077508 Fixed remaining SkSL positions
This addresses (hopefully) all of the remaining suboptimal positions in
SkSL error reporting.

Change-Id: I5bc977b03d51153b841a89fa687e54e3e9cb6ec3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/527976
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-04-06 17:03:22 +00:00
Ethan Nicholas
453e4def6f Improved BinaryExpression position tracking
This avoids a situation where we didn't know the position of a binary
expression while we were in the middle of evaluating it, which was
leading to problems with upcoming error reporting changes.

Change-Id: Ie41fa82d077de1aa1041cd84c539ba29aaa2f5f0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/527500
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-04-05 20:02:34 +00:00
Ethan Nicholas
59b0688e5e Improved PostfixExpression position tracking
This avoids a situation where we didn't know the position of a postfix
expression while we were in the middle of evaluating it, which was
leading to problems with upcoming error reporting changes.

Change-Id: Ie6d4dd8411ffb24ac7ee95d3e908483d0d92ba0f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/527499
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-04-05 20:02:26 +00:00
Ethan Nicholas
3d3a510071 Require a Position to be passed into various SkSL expressions
This removes some hacks where we were creating nodes with the wrong
positions and later updating them to have the correct positions, along
with a general increase in the rigorousness of position tracking.

Change-Id: I2bc635de6d5f516d5fb6763b00a22a10ccdf135f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/526678
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-04-04 13:52:06 +00:00
Ethan Nicholas
fd9c66e180 Enforce correct positions for SkSL expressions
This adds asserts to DSLParser::expression() to ensure that every
generated expression actually starts at the current offset, and fixes
all of the various spots we weren't successfully doing that.

Change-Id: Ie37dbf9ee8bb47fd03f7a290d2e15da4fbfff938
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/525316
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-04-02 16:42:58 +00:00
Ethan Nicholas
3f5184cfa6 Added an SkSL Operator enum
SkSL::Operator was previously just a thin wrapper around Token::Kind and
everything was therefore written in terms of Token. Since Token is not
accessible from include/ (and we don't want it to be), this creates an
actual Operator enum and eliminates the dependence on Token. This will
enable followup changes to reference Operator from within the DSL
include files.

Change-Id: I49555c9151618fd15970a303d2284972c78c3f21
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/525976
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-03-31 13:20:57 +00:00
Ethan Nicholas
0dd66fea56 Added full position tracking to Swizzle
No visible effect yet, but this will enable better error reporting in a
future CL.

Change-Id: I09e1c5d3bb423a7ce42701f15c4bb142b0a9473c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/524638
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-03-28 14:04:14 +00:00
Kevin Lubick
aab019a15e [bazel] Fix build
Most of these are pretty mechanical generated changes.

IWYU noticed one issue with DSLCore.h, which was fixed here.

Change-Id: I5629565ad3c2817daa71907c62f932d93f9d78ab
Bug: skia:12541
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/524617
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2022-03-28 13:56:16 +00:00
Ethan Nicholas
7183f29125 Added position tracking for SkSL Modifiers
This is needed for accurate error reporting when we start reporting
ranges rather than line numbers.

Change-Id: If465317e04685e91ab7c408d29e82028b5d59d1a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/523425
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-03-23 20:45:39 +00:00
Kevin Lubick
08ece0c9a0 [includes] Enforce IWYU on sksl code
PS1 regenerates the Bazel files. Use it as the base change when
    comparing patchsets.

IWYU seems to do a good job of working with MyFile.cpp and
MyFile.h, but if there is just a MyHeader.h, it doesn't always
seem to throw errors if the includes aren't correct. This was
observed with include/sksl/DSL.h This might be due to the fact
that headers are not compiled on their own, so they are never
sent directly to the IWYU binary.

This change sets enforce_iwyu_on_package() on the all sksl
packages and then fixes the includes until all those checks
are happy. There were a few files that needed fixes outside
of the sksl folder. Examples include:
 - src/gpu/effects/GrConvexPolyEffect.cpp
 - tests/SkSLDSLTest.cpp

To really enforce this, we need to add a CI/CQ job that runs
bazel build //example:hello_world_gl --config=clang \
  --sandbox_base=/dev/shm --features skia_enforce_iwyu

If that failed, a dev could make the changes described in
the logs and/or run the command locally to see those
prescribed fixes.

I had to add several entries to toolchain/IWYU_mapping.imp
in order to fix some private includes and other atypical
choices. I tried adding a rule there to allow inclusion of
SkTypes.h to make sure defines like SK_SUPPORT_GPU, but
could not get it to work for all cases, so I deferred to
using the IWYU pragma: keep (e.g. SkSLPipelineStageCodeGenerator.h)

Change-Id: I4c3e536d8e69ff7ff2d26fe61a525a6c2e80db06
Bug: skia:13052
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/522256
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
2022-03-21 12:43:02 +00:00
Ethan Nicholas
c444394841 Removed file field from SkSL::Position
Bug: skia:13051
Change-Id: I13cdb1b625f65e6d15d3b59ba493897ed88b24c4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/521005
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-03-17 16:47:05 +00:00
Ethan Nicholas
5e035c66da Added safety checks to SkSL error reporting
This adds an assert to Position::line() to ensure that we don't run
past the end of the source string. Since the source string can
contain embedded nulls, we also switch the source handling from
const char* to std::string so we can accurately determine its length.

Change-Id: I9df47e98c1a0cbc35222a0ea709d9403762210d3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/521656
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-03-17 16:06:06 +00:00
Ethan Nicholas
c9e9131f44 Switched SkSL positions from int to Position
This CL switches almost all instances of line tracking over to track
Positions instead. This does not yet add full range support - only the
start offsets will be correct currently. Followup CLs will extend the
ranges to fully cover their nodes.

Change-Id: Ie49aee02f35dcb30a3adb8a35f3e4914ba6939d2
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/518137
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-03-14 17:06:17 +00:00
Ethan Nicholas
9cd8456afe Renamed SkSL::PositionInfo to SkSL::Position
Change-Id: I1fa160941b18392616708f4e08a4ebbf7398480e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/518521
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-03-09 17:37:38 +00:00
Kevin Lubick
e94b52c442 [canvaskit] Add skottie to Bazel build
PS 1 regenerates existing Bazel files
PS 2 adds generated Bazel files to skottie and its dependencies,
as well as incorporating it into CanvasKit.

This changes the version of Bazel we use to 5.0.0 (recently
released).We had been using a pre-release of 6.0 because we
wanted the new features in one of the 5.0 release candidates,
but not the regression that was there (and reverted before the
full 5.0 release). I'd like to stick to the latest stable Bazel
release where possible.

Suggested Review Order:
 - //modules/skottie/BUILD.bazel (this was hand written
   to encapsulate the skottie library). The files in the
   deps are based on skottie.gni.
 - //modules/skresources/BUILD.bazel and //modules/sksg/BUILD.bazel
   which expose all sources
 - //third_party/file_map_for_bazel.json which ignores the
   ffmpeg libraries (we won't actually build the SkVideoDecoder
   stuff because HAVE_VIDEO_DECODER is not set).
 - //modules/canvaskit/BUILD.bazel which makes use of the skottie
   library and includes the interface skottie.js file.
 - .bazelversion which changes the Bazel version used (e.g. by
   Bazelisk).
 - All other changes should be auto-generated or related to
   deleted files.

Change-Id: Ic26f9a9dea5310f2cbd9cda7d701847924a39a22
Bug: skia:12541
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/503828
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Jorge Betancourt <jmbetancourt@google.com>
2022-02-04 19:18:27 +00:00
John Stiles
ffeb6f2339 Remove SkSL::String class.
The previous CLs have removed the last significant differences between
SkSL::String and std::string. This CL removes SkSL::String entirely and
replaces it with std::string throughout the code.

Apologies for the very long CL, but I have done my best to make it as
simple and reviewable as possible. The vast majority of changes are
simple replacement of `SkSL::String` with `std::string`. In the rare
spots where code is moved from one place to another, it is logically
unchanged.

Change-Id: I39563d2db45da229f17f4504dfd63e00bde7a96e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/503339
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2022-02-03 14:59:16 +00:00
John Stiles
074a016b89 Remove skstd::string_view entirely.
We now use std::string_view throughout. SkStringView.h has been moved to
include/private/ and is only used for our C++20/23 compatibility methods
(starts_with/ends_with/contains).

Change-Id: I961842c6778256a03868e7602d48add34f420763
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/502306
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2022-02-01 21:16:41 +00:00
Ethan Nicholas
ddc34d96c4 Improved SkSL private type errors
Upcoming dehydration / rehydration changes require $intLiteral and
$floatLiteral to be present in the symbol table (as all other private
types are). It turns out that even with them marked private, having
them in the symbol table allows them to be incorrectly accessed without
error due to a code path that fails to check for private types.

This CL takes care of that and ultimately results in better output from
PrivateTypes.

Change-Id: Ic47b77a770834079f28c3195545a7cabca8e6cb3
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/501196
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2022-01-27 20:57:38 +00:00
Kevin Lubick
96e4053be7 Update Bazel files
- Use latest emscripten toolchain (3.1.0)
 - Autogenerate the atoms and manually fix some of the file lists.
 - Add a known_good_builds target to bazel/Makefile to help
   check the things we expect to work with Bazel.

Change-Id: Ia5f51e7b9eb5c108386820ad59180c8f862f5a70
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/491438
Reviewed-by: Ben Wagner <bungeman@google.com>
2022-01-06 18:10:57 +00:00
John Stiles
543b8681c7 Add SkRuntimeEffect::MakeTraced API for SkShader debugging.
Color filters and blenders are currently not supported for tracing,
because we don't have access to the pixel coordinate, and so there is
nothing to compare the debug-trace coordinate with.

Change-Id: I7fe7fb4955b002432046ceef61c6f0a4c721a581
Bug: skia:12708
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/481278
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-12-07 22:34:00 +00:00
Brian Osman
8c3d183cc2 Rename SkSL 'srgb_unpremul' to just 'color'
Added comments to explain the semantics (both what's expected when you
set the uniform, and what you see in the shader). The old name was
confusing, because it sounded like you got an sRGB color in the shader.
This is terse, but I think it's the cleanest syntax - and for embedding
clients, they can use C++ (etc.) API to require that color uniforms are
assigned from color types.

Bug: skia:10479
Change-Id: If00ea754060494aaa83001a5b357687953de8a5f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/480577
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Derek Sollenberger <djsollen@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2021-12-07 17:56:27 +00:00
John Stiles
5fb4753483 Revert "Remove newly-added SkSL::DebugTrace base class."
This reverts commit 873a39ebd1.

Reason for revert: rework #2 of trace design, DebugTrace is back

Original change's description:
> Remove newly-added SkSL::DebugTrace base class.
>
> Slight rework of the SkRuntimeEffect trace design means we won't expose
> any debug-trace class at the public level, so an interface base class
> doesn't add value after all.
>
> Change-Id: I82739e9c5ba5ce5c7a63793ec0c09a50ab19fbb3
> Bug: skia:12708
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/480776
> Auto-Submit: John Stiles <johnstiles@google.com>
> Commit-Queue: Brian Osman <brianosman@google.com>
> Reviewed-by: Brian Osman <brianosman@google.com>

Bug: skia:12708
Change-Id: I02d51f83c7a3384b1eaa74ecf1a80b5f6e4fd774
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/481196
Auto-Submit: John Stiles <johnstiles@google.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2021-12-07 16:25:17 +00:00
John Stiles
873a39ebd1 Remove newly-added SkSL::DebugTrace base class.
Slight rework of the SkRuntimeEffect trace design means we won't expose
any debug-trace class at the public level, so an interface base class
doesn't add value after all.

Change-Id: I82739e9c5ba5ce5c7a63793ec0c09a50ab19fbb3
Bug: skia:12708
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/480776
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-12-07 00:54:08 +00:00
John Stiles
dfc7f31bd1 Create a public base class for debug traces.
SkRuntimeEffect needs an API for generating debug traces. This means
that we will need references to debug traces inside a public header.
Rather than reference SkVMDebugInfo directly, we now have a simpler
base class for debug traces. This is better suited to landing in
include/.

I've also renamed SkVMDebugInfo to SkVMDebugTrace for consistency, since
it now contains all the trace data. (When it was first added, it only
had the slot info.)

Change-Id: Ibaa4dedf9a17b9462b4f233a28a7b875d0317892
Bug: skia:12708
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/480356
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
2021-12-06 18:22:51 +00:00
Brian Osman
00aa1a9259 Prevent 'binding' and 'set' on struct/interface block fields
I should have realized the fuzzer would find this assert when I added
it. Now the front-end rejects these layout qualifiers on both struct
fields and interface block fields. LayoutInInterfaceBlock.sksl is a
reformatted version of the fuzzer input. LayoutInStruct is hand-crafted
to trigger the same failure on a different code path. Both would
previously assert in the SPIRV generator. Now, neither one gets that
far.

Bug: oss-fuzz:41347
Change-Id: Iff69d8f5482da7b772e9331c4fd2d58e89813c46
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/476396
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
2021-11-29 15:53:57 +00:00
Kevin Lubick
9488e0237d [infra] Experiment generating BUILD.bazel files
This uses the gazelle extension from
https://skia-review.googlesource.com/c/buildbot/+/473357

Review Tips:
 - Ignore any changes to .h or .cpp files. Those have been
   pulled out into their own CLs.
 - Start with bazel/macros.bzl.
 - Read the CL with the generation code, if you haven't already.
 - Look at third_party/file_map_for_bazel.json.
 - See experimental/bazel_test for an idea of how a cc_binary
   would be made.
 - Spot check one or two of the BUILD.bazel files.

This CL generates the "atomic" rules for src/, include/ and
modules/skshaper, as a starting point.

`bazel build --config clang //include/...` works

`bazel build --config clang //src/...` starts compiling,
(which verifies that the BUILD.bazel files are all valid),
but runs into errors because not all third_party deps have
been resolved, and there are some files missing from the
toolchain still (e.g. EGL headers).

Change-Id: Ib7e0fb0efdb9f08655f06cbc56e9bb4cf416294b
Bug: skia:12541
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/474240
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Leandro Lovisolo <lovisolo@google.com>
2021-11-23 18:53:16 +00:00
Kevin Lubick
1f8c31b101 [infra] Add initial Bazel rules and files
These rules can be used to build our GMs on WASM+WebGL and
libskia.a with just the CPU backend (and most other features
turned off).

This can be done with the following commands:
  - bazel build //modules/canvaskit:gm-bindings-wasm --gpu_backend=gl_backend --with_gl_standard=webgl_standard
  - bazel build :skia-core --config clang

This pivots slightly from http://review.skia.org/463517
by using config_settings [1] instead of platforms for
the optional features that we control. This pivot was
suggested in [2]

We have BUILD.bazel files in many of the subdirectories
that specify filegroups for the appropriate files. In
an effort to make //BUILD.bazel more readable, it is
the responsibility of these subfolders to deal with
conditionally including certain .h or .cpp files.
This is done using select statements and config_settings
or platform constraints as necessary.

For example, src/gpu/BUILD.bazel will different private
filegroups for each of the supported gpu backends [3]
and a more-visible filegroup called "srcs" that has
the right selection of the private files to be used
for compilation.

An effort has been made to avoid using glob() in our
BUILD.bazel files. These file lists were made by using
`ls -1` and some regex to add in quotes. We might want
to make a helper script to assist with that, if necessary.

To specify which options we have, the settings in
//bazel/common_config_settings/BUILD.bazel have been
redesigned. They make use of a macro `string_flag_with_values`
that removes the boilerplate. Patchset 36 shows what the
file looks like w/o the macro.

The top level BUILD.bazel file will still need to use
some logic to handle defines, because local_defines is
a list of strings, not a list of labels [4].

Suggested Review Order:
  - WORKSPACE.bazel to see the new dependencies on the
    emsdk toolchain and bazel_skylib
  - bazel/common_config_settings/* to see the few settings
    defined (we have more to define, see BUILD.gn and
    //gn/skia.gni for ideas)
  - BUILD.bazel to see the "skia-core" cc_library rule.
    See also "gms" and "tests"
  - modules/canvaskit/BUILD.bazel to see the use of
    the emscripten "wasm_cc_binary" rule, which depends
    on the "skia-core", "gms", and "tests" rule. Note that
    it only builds some of the gms as a proof of concept.
  - The other BUILD.bazel files. Some of these are not
    platform or feature dependent (e.g. pathops). Others
    are (e.g. gpu).
  - All other files.

[1] https://docs.bazel.build/versions/4.2.1/skylark/config.html#user-defined-build-settings
[2] https://github.com/emscripten-core/emsdk/pull/920
[3] In this CL, that's just the webgl one.
[4] https://docs.bazel.build/versions/main/be/c-cpp.html#cc_library.local_defines

Change-Id: Ieecf9c106d5e3a6ae97d13d66be06b4b3c207089
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/458637
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Leandro Lovisolo <lovisolo@google.com>
Owners-Override: Kevin Lubick <kjlubick@google.com>
2021-11-09 12:32:25 +00:00
John Stiles
5420cbcf65 Match GLSL scoping rules more closely in SkSL.
GLSL treats builtin types and user-defined types differently; `int` and
`float` are keywords and cannot be used to name variables. However, it's
fine for a user type like `struct xyz` to be hidden by a variable
`int xyz` or even `xyz xyz` (i.e., a variable of type `struct xyz` named
`xyz`).

We now honor that distinction and include tests for it. This will fix
several ES2 conformance tests (local_struct_variable_hides_struct_type,
local_int_variable_hides_struct_type, etc.).

Change-Id: I7a45c70707087f9f355ce5b06b032fed16683f3e
Bug: skia:12527
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/458721
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2021-10-12 21:53:28 +00:00
John Stiles
ff5bb37b72 Replace illegal DSLTypes with Poison types.
The fuzzer has been poking various holes in DSL by intentionally
creating illegal types (e.g. private or not ES2-compatible), then
finding ways to use those types, e.g. constructors or swizzles.

Previously we were mitigating those by calling `reportIllegalTypes` at
the locations where the type was used. Now, we detect the illegal type
usage at the source, and return a poison DSLType. This prevents the
illegal type from leaking out at all, and stops the problem at its
source. It also allows us to remove calls to `reportIllegalTypes`
sprinkled through the code, as those are now redundant.

Change-Id: Id50b50f72849111d80f76e4fdc2cb6094d3009bd
Bug: oss-fuzz:39597
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/455999
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-10-06 00:12:07 +00:00
Ethan Nicholas
df93db9d32 Removed a number of utility methods from DSLWriter
DSLWriter is about to be renamed to something non-DSL-specific, and
(especially since we're in the middle of trying to break up some of our
big classes anyway) it didn't feel right to leave a pile of extremely
DSL-specific utility methods in it. And since it turns out that none of
these methods really do much of anything anymore, it seemed best to
just kill them all.

Change-Id: I5e257f87108a7a6db7fc1c01bab4e6c1544d60b0
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/455158
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
2021-10-04 20:42:22 +00:00
John Stiles
1a2cef7fbc Avoid returning a DSLExpression with an invalid type.
We shouldn't return expressions that violate basic invariants (such as a
Constructor with an invalid Type) because future code should be able to
rely on those invariants to hold. Returning a Constructor with an
invalid Type broke some assertions I had added; these assertions checked
that the Constructor's type was valid before operating on it.

Change-Id: I861927ad042f30d4a1e20896149ce404f4160ffb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/455657
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2021-10-04 17:34:49 +00:00
Ethan Nicholas
de42a9d2fc Fixed unsupported type errors in pure DSL
Change-Id: I5a57e2db46734ca08825e6aef7a6363bcaada45a
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/453759
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
2021-10-04 14:32:19 +00:00
John Stiles
906e9eb538 Emit qualifiers in the GLSL ES-required order.
This should fix a failure in the ES2 conformance suite's "const_in_int".

Change-Id: I8b5487749291ef57712b8fe6c3949dc7c3e76883
Bug: skia:12499
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/455157
Reviewed-by: Brian Salomon <bsalomon@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2021-10-01 19:09:43 +00:00
John Stiles
66aa1ded16 Allow precision qualifiers in function params.
Previously, `Type::applyPrecisionQualifiers` would return a new type
(e.g. `mediump + float` returned `half`) but left the precision
qualifier flags as-is. This was implemented that way because the
modifiers were already baked into a pool, so mutating them was
difficult.

The rewritten DSLParser does not share this limitation--every place
where applyPrecisionQualifiers is used, the Modifiers are easily
mutable. As a result, `applyPrecisionQualifiers` can now clear the
precision-qualifier bits on the Modifier, meaning that `half` and a
`mediump float` will generate the exact same Type/Modifier combination.

This change fixes a bug where precision qualifiers were not allowed on
function parameters. (See `check_parameters` in FunctionDeclaration.cpp
to pinpoint the cause of the error. A less-invasive fix could have just
marked those modifier bits as allowed in `check_parameters`, but this
fix addresses the root of the issue and is honestly how I wanted
`applyPrecisionQualifiers` to work all along.)

Change-Id: I331813efa54138f469a0d5bff2d274cd3ce64b70
Bug: skia:12489
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/455156
Auto-Submit: John Stiles <johnstiles@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
2021-10-01 18:59:27 +00:00
Ethan Nicholas
791c0d36a6 Remove ASTNode and SkSLParser
Now that DSLParser is used for everything we can get rid of this
unused code.

Change-Id: I7b586a7d7a51ac9df7d2c52baa1f525233f489b9
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/443076
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-09-28 13:36:49 +00:00
Ethan Nicholas
89cfde1dbe Reland "Renamed SkSL "offset" to "line""
This reverts commit cc91452f0a.

Change-Id: I7eff0ddeebef4ce298893f9b3ba410b09647e9a4
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/453138
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
2021-09-27 19:52:08 +00:00
Ethan Nicholas
5fad2b8849 Reland "Use SkSL "offset" to actually mean "line""
This reverts commit a909dd6b8d.

Turns out those reportPendingErrors() calls I removed were in fact
necessary, just not on any of the CQ bots.

Change-Id: I8be0898ac0b41dbb703a35f705cac06ca716c0b7
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/453077
Reviewed-by: John Stiles <johnstiles@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2021-09-27 19:48:39 +00:00
Brian Osman
a909dd6b8d Revert "Use SkSL "offset" to actually mean "line""
This reverts commit 47f76853c6.

Reason for revert: Test failures

Original change's description:
> Use SkSL "offset" to actually mean "line"
>
> SkSL internally tracks token offsets, but only ever reports errors using
> line numbers. With the introduction of the DSL, which (being embedded in
> C++ source) only has access to line numbers in the first place, tracking
> offsets went from merely providing little benefit to actively making
> life more difficult.
>
> We are changing SkSL's position tracking from handling offsets to
> handling line numbers, but to simplify the review process the change is
> split up into two main steps. The first step (this CL) starts using
> line numbers everywhere, but avoids the thousand-line churn of actually
> renaming "offset", so most "offset" fields, variables, and parameters
> will be briefly misnamed and will actually contain a line number.
>
> The followup CL will complete the process by renaming all of the
> now-misnamed fields, variables, and parameters, but will not make any
> behavioral changes.
>
> Bug: skia:12459
> Change-Id: I30dc87cf4b816c5ddd7b8ae1be32586388962085
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/451419
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
> Reviewed-by: John Stiles <johnstiles@google.com>

Bug: skia:12459
Change-Id: I562d9980cd43a2fc5108e562155fe731a1761dca
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452720
Auto-Submit: Brian Osman <brianosman@google.com>
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
2021-09-24 19:03:24 +00:00
Brian Osman
cc91452f0a Revert "Renamed SkSL "offset" to "line""
This reverts commit 58d47fa1ec.

Reason for revert: Tree broken

Original change's description:
> Renamed SkSL "offset" to "line"
>
> https://skia-review.googlesource.com/c/skia/+/451419 changed the meaning
> of "offset" throughout SkSL, so that it was actually tracking line
> numbers rather than offsets (and thus had a misleading name). This
> completes the transition by renaming all of the now-misnamed "offset"
> fields, parameters, and variables to "line'.
>
> Bug: skia:12459
> Change-Id: I394e6441f6ddfaad6d4098352ba9b1bfeaf273be
> Reviewed-on: https://skia-review.googlesource.com/c/skia/+/450644
> Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
> Reviewed-by: John Stiles <johnstiles@google.com>

Bug: skia:12459
Change-Id: Idcec3b65cb81d51c8b860c4388578700030b40a9
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452718
Commit-Queue: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>
2021-09-24 18:59:18 +00:00
Ethan Nicholas
58d47fa1ec Renamed SkSL "offset" to "line"
https://skia-review.googlesource.com/c/skia/+/451419 changed the meaning
of "offset" throughout SkSL, so that it was actually tracking line
numbers rather than offsets (and thus had a misleading name). This
completes the transition by renaming all of the now-misnamed "offset"
fields, parameters, and variables to "line'.

Bug: skia:12459
Change-Id: I394e6441f6ddfaad6d4098352ba9b1bfeaf273be
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/450644
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
2021-09-24 14:23:15 +00:00
Ethan Nicholas
47f76853c6 Use SkSL "offset" to actually mean "line"
SkSL internally tracks token offsets, but only ever reports errors using
line numbers. With the introduction of the DSL, which (being embedded in
C++ source) only has access to line numbers in the first place, tracking
offsets went from merely providing little benefit to actively making
life more difficult.

We are changing SkSL's position tracking from handling offsets to
handling line numbers, but to simplify the review process the change is
split up into two main steps. The first step (this CL) starts using
line numbers everywhere, but avoids the thousand-line churn of actually
renaming "offset", so most "offset" fields, variables, and parameters
will be briefly misnamed and will actually contain a line number.

The followup CL will complete the process by renaming all of the
now-misnamed fields, variables, and parameters, but will not make any
behavioral changes.

Bug: skia:12459
Change-Id: I30dc87cf4b816c5ddd7b8ae1be32586388962085
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/451419
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
2021-09-24 13:16:11 +00:00
John Stiles
11101181b9 Restore DSLWriter to relying on a Compiler again.
This CL undoes most of the changes from http://review.skia.org/451739
and http://review.skia.org/451741 as these changes opened up a threading
can of worms that is probably not solvable. I no longer have a use case
for the new dsl::Start APIs.

Change-Id: Icf0a86364d258ea3bbf0d18bbdbd130ef590c02f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/452097
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2021-09-23 20:26:20 +00:00
John Stiles
1a117d7642 Allow dsl::Start with a Context instead of a Compiler.
This should allow lightweight DSL usage without needing access to a
Compiler, but some operations won't work (for now) because they rely on
the IRGenerator. Ideally, as we will reduce our dependence on
IRGenerator, these limitations will fade away.

Change-Id: I93880f153a7425b208bdc4a866169d037e4553a6
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/451739
Auto-Submit: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
2021-09-22 20:29:44 +00:00
Ethan Nicholas
ec8eef24fb Slightly updated DSL Switch API
PossibleExpression / PossibleStatement should only have been used in
cases where we do not have a position available.

Change-Id: I8cd3cafce21b3c18f03e75a0c822eea75c86f225
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/451896
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2021-09-22 20:00:43 +00:00
John Stiles
b43596f10b Make DSLStatement-from-SkSL ctors public.
Internally, these can be very useful for assembling code fragments.

Externally, our users shouldn't have any SkSL::Statement or
SkSL::Expression objects to pass in, so it's still effectively a non-
public API.

Change-Id: I03b88507ce932b472ab5b9aed68ea67dcd10b13f
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/449855
Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
Commit-Queue: John Stiles <johnstiles@google.com>
Auto-Submit: John Stiles <johnstiles@google.com>
2021-09-20 14:09:14 +00:00
Ethan Nicholas
c973d26854 Fixed DSLParser assertion error uncovered by fuzzer
Bug: oss-fuzz:38108
Change-Id: I0e055d837923f00b982bc395dbf29b6ff59a3b21
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/448896
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
2021-09-20 13:48:41 +00:00
Ethan Nicholas
2280058446 Reenable DSLParser
Change-Id: I1819b2c40902611d7e86245bff73ad8c2bd7629c
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/449060
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: John Stiles <johnstiles@google.com>
2021-09-16 15:28:19 +00:00
Ethan Nicholas
5b1ae4b285 Fix DSLParser clang-tidy warning
DSLParser is #ifdef'ed out, so this doesn't currently impact anything,
but is necessary to be able to reenable the DSLParser.

Change-Id: I76d48b1b855f42ba3bc8b0734199af6e2a88becb
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/449517
Reviewed-by: John Stiles <johnstiles@google.com>
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
2021-09-16 14:49:15 +00:00