Organization v3.5, if we are keeping track :)
This splits the "srcs" filegroup into "srcs" and "private_hdrs",
and renames "hdrs" to "public_hdrs".
To assist with the split, I created the macro split_srcs_and_hdrs.
Rather than keep two separate lists of header and source files,
I figured it would be easiest, at least for the common case,
to keep one list of files and then have a for loop split them
apart. I've tried to be consistent with having the list
of files be named with a _FILES suffix - maybe we can use this
as a marker to generate .gni files in the future?
Suggested review order:
- //bazel/macros.bzl. Note this needs a corresponding
G3 change (http://cl/452279799) as well. The exports_files_legacy
change is the better approach to something I manually
handled yesterday when fixing the G3 roll.
- //BUILD.bazel to see the new target skia_internal and
the previous skia_core renamed to skia_public.
- //src/core/BUILD.bazel to see a typical usage of
split_srcs_and_hdrs.
- //include/... to see the change to public_hdrs and
private_hdrs
- //src/... to see many more usages of split_srcs_and_hdrs
- //tools/... to see changes to skia_internal where
appropriate.
- Everything else. Note that //modules/... might also need
to be built with skia_internal instead of skia_public,
but we can fix that up later, if necessary.
Change-Id: Ie1cc969455d97b029b2d77faa222c4a9bad70671
Bug: skia:12541
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/545716
Reviewed-by: Ben Wagner <bungeman@google.com>
Reviewed-by: Leandro Lovisolo <lovisolo@google.com>
The primary goal of this organization structure is to keep
our top level BUILD.bazel file short, with as little logic
as feasible. The logic required to control which files to
include, which third_party deps are needed, what system libraries
should be linked again, etc, should be in the BUILD.bazel
file best should be as close to the affected files as feasible.
In essence, we use filegroup() rules to bubble up the files
needed to build Skia (all as one big cc_library call) and
cc_library rules to bubble up the other components needed to build.
For example, //src/ports/SkFontHost_FreeType.cpp needs FreeType,
but only if we are compiling Skia with that type of font
support. With the new organization structure in this CL,
//src/ports/BUILD.bazel should have the logic that determines
if the cpp file should be included in the build of Skia and
if it is, that the Skia build should depend on //third_party:freetype2
Another example is //src/gpu/ganesh/BUILD.bazel, which
chooses which of the dawn, gl, vulkan, etc backend sources,
and the associated dependencies to include in the build.
It does not specify what those are, but delegates to the
BUILD.bazel files in the subdirectories housing the
backend-specific code.
The structure guidelines for BUILD.bazel files are as follows:
- Have a filegroup() called "hdrs" (for public headers) or
"srcs" (for private headers and all .cpp files) that is
visible to the parent directory. This should list the
files from the containing directory to include in the
build.
See //include/core/BUILD.bazel and //src/effects/BUILD.bazel
as examples.
- filegroup() rules can list a child directory's "hdrs"
or "srcs" in their "srcs" attributes, but should not contain
select statements pertaining to child directory files.
See //include/gpu/BUILD.bazel and //src/gpu/ganesh/BUILD.bazel
as examples.
- May have a cc_library() called "deps". This can specify
dependencies, cc_opts, and linkopts, but not srcs or hdrs. [1]
See //src/codec/BUILD.bazel as an example. These should
be visible to the parent directory.
- "hdrs", "srcs", and "deps" for the primary Skia build
(currently called "skia_core") should bubble up through
//include/BUILD.bazel and //src/BUILD.bazel, one directory
at a time.
This CL demonstrates a very basic build of Skia with many features
turned off (CPU only, no fonts, no codecs). Follow-on CLs will
add to these rules as more targets are supported. See bazel/Makefile
for the builds that work with just this CL.
Suggested Review Order:
- //BUILD.bazel to see the very small skia_core rule which
delegates all the logic down stack. Note that it has a
dependency on //bazel:defines_from_flags which will set
all the defines listed there when compiling all the
.cpp and .h files in skia_core *and* anything that depends
on skia_core, but *not* //src:deps.
- //include/BUILD.bazel and other BUILD.bazel files in the
subdirectories of that folder. Note that the filegroups in
//include/private/... are called "srcs" to be similar to
how Bazel wants "private headers" to be in the "srcs" of
cc_library, cc_binary, etc. and only public headers are
to be in "hdrs" [2].
- //src/BUILD.bazel and other BUILD.bazel files in the
subdirectories of that folder. //src/gpu/ganesh/...
will be filled in for dawn, vulkan, and GL in the next CL.
- //PRESUBMIT.py, which adds a check that runs buildifier [3]
on modified BUILD.bazel files to make sure they stay
consistently formatted.
- //bazel/... to see the new option I added to make sksl
opt-in or opt-out, so one could build Skia with sksl,
but not with a gpu backend.
- Misc .h and .cpp files, whose includes were removed if
unnecessary or #ifdef'd out to make the minimal build
work without GPU or SkSL includes.
- //bazel/Makefile to see the builds that work with this CL.
[1] Setting srcs or hdrs is error-prone at best, because those
files will be compiled with a different set of defines than
the rest of skia_core, because they wouldn't depend on
//bazel:defines_from_flags.
[2] https://bazel.build/reference/be/c-cpp#cc_library.hdrs
[3] https://github.com/bazelbuild/buildtools/releases
Change-Id: I5e0e3ae01ad42d672506d5aad1239f2512188191
Bug: skia:12541
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/543977
Reviewed-by: Leandro Lovisolo <lovisolo@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
gazelle ended up being more liability than asset for our C++ rules.
It required devs to manually run the command frequently (and was
easy to forget until the CQ failed). The fact that we still had to
edit the source files (e.g. the "srcs" cc_libraries) meant that
the mixture between generated and hand-written caused some
tension (see include/third_party/vulkan for a good example).
The combination of gazelle and our IWYU enforcement added several
bits of churn without any real benefit. The generated rules
also didn't help identify cases where we were not keeping tight
boundaries (e.g. non-gpu code and gpu code).
Identifying third_party deps automatically ended up being trickier
than anticipated (see the deleted //third_party/file_map_for_bazel.json)
Using the "maximum set of dependencies" worked ok, but ended up
increasing build time unnecessarily. For example, compiling
CanvasKit for WebGL always needed to compile Dawn because
SkSLCompiler.cpp sometimes needs to include tint/tint.h.
Follow-up CLs will rebuild the BUILD.bazel rules without gazelle.
Note to Reviewers:
- The only file worth manually reviewing here is bazel/Makefile.
Change-Id: I36d6fc3747487fabaf699690780c95f1f6765770
Bug: skia:12541
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/543976
Reviewed-by: Leandro Lovisolo <lovisolo@google.com>
Reviewed-by: Ben Wagner <bungeman@google.com>
G3 prefers license() first.
This was done mechanically with a big find/replace
Change-Id: I8c33c7bc10a6bec42e966cad81c259954e841811
Bug: skia:13211
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/535898
Reviewed-by: Ben Wagner <bungeman@google.com>
Ran the following commands:
find -name "BUILD.bazel" -exec sed -i -e '1iload("//bazel:macros.bzl", "cc_library", "exports_files_legacy")\nexports_files_legacy()' {} +
buildifier --lint=fix --mode=fix -r .
This had the effect of making sure we can export all of our
files in G3 (until we no longer have legacy targets) and
making all of our cc_libraries shim-able.
bazel/macros.bzl has the human-contributed changes, the rest
were mechanical.
Change-Id: I8e24e30e74b038cfd072cdbe4078bfd1d213dd46
Bug: skia:13211
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/535359
Reviewed-by: Ben Wagner <bungeman@google.com>
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>
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>
We treat them as part of SkTypes.h, so let's just merge them in?
Change-Id: Icd6db3913a679ceb9de09027d17eb9361754b016
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/268769
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Current strategy: everything from the top
Things to look at first are the manual changes:
- added tools/rewrite_includes.py
- removed -Idirectives from BUILD.gn
- various compile.sh simplifications
- tweak tools/embed_resources.py
- update gn/find_headers.py to write paths from the top
- update gn/gn_to_bp.py SkUserConfig.h layout
so that #include "include/config/SkUserConfig.h" always
gets the header we want.
No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
Add AsWinding to convert SkPath with even odd fill to winding fill.
This basic implementation works for simple non-intersecting paths.
It may fail if contours in paths touch, specifically when the leftmost
point in a contour is shared with another contour.
The incomplete parts are marked with TODO in the code.
If this interface and implementation look promising, I will continue to
tackle the more difficult cases.
R=reed@google.com,bungeman@google.com
Bug: skia:7682
Change-Id: I479fba60072eb1391b451fcb819504245da2e2a9
Reviewed-on: https://skia-review.googlesource.com/147044
Commit-Queue: Cary Clark <caryclark@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Also adds a presubmit to prevent adding trailing whitespace to source
code in the future.
Change-Id: I41a4df81487f6f00aa19b188f0cac6a3377efde6
Reviewed-on: https://skia-review.googlesource.com/57380
Reviewed-by: Ravi Mistry <rmistry@google.com>
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
Replace the implicit curve intersection with a geometric curve intersection. The implicit intersection proved mathematically unstable and took a long time to zero in on an answer.
Use pointers instead of indices to refer to parts of curves. Indices required awkward renumbering.
Unify t and point values so that small intervals can be eliminated in one pass.
Break cubics up front to eliminate loops and cusps.
Make the Simplify and Op code more regular and eliminate arbitrary differences.
Add a builder that takes an array of paths and operators.
Delete unused code.
BUG=skia:3588
R=reed@google.com
Review URL: https://codereview.chromium.org/1037573004
Implement path tight bounds using path ops machinery. This is not
as efficient as it could be; for instance, internally, it creates
a path ops structure more suited to intersection. If this shows
up as a performance bottleneck, it could be improved.
Fix path ops gyp files, which have fallen out of sync with other
tests.
R=mtklein@google.com, bsalomon@google.com
TBR=mtklein
BUG=skia:1712
Author: caryclark@google.com
Review URL: https://codereview.chromium.org/348343002
Paths contain lines, quads, and cubics, which are
collectively curves.
To work with path intersections, intermediary curves
are constructed. For now, those intermediates use
doubles to guarantee sufficient precision.
The DVector, DPoint, DLine, DQuad, and DCubic
structs encapsulate these intermediate curves.
The DRect and DTriangle structs are created to
describe intersectable areas of interest.
The Bounds struct inherits from SkRect to create
a SkScalar-based rectangle that intersects shared
edges.
This also includes common math equalities and
debugging that the remainder of path ops builds on,
as well as a temporary top-level interface in
include/pathops/SkPathOps.h.
Review URL: https://codereview.chromium.org/12827020
git-svn-id: http://skia.googlecode.com/svn/trunk@8551 2bbb7eff-a529-9590-31e7-b0007b416f81
