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>
The distinction between SkJumper and SkRasterPipeline used
to be important, but it's no longer. This CL moves everything
under src/jumper to the appropriate SkRasterPipeline file.
Change-Id: I1181fffafccb3dc4c4eb5f33b442c719ee370462
Reviewed-on: https://skia-review.googlesource.com/c/164627
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
Same deal as before, just swap_rb where needed.
The change to SkWebpCodec could probably land independently if we want.
Change-Id: Idd53ab76232cb95eb2f41cd65c6903fa7c5b01d6
Reviewed-on: https://skia-review.googlesource.com/c/163440
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
The existing strategy for skipping them never worked, and the new test
would have crashed. Instead just make them normal but trivial stages.
Change-Id: I41772e817e52f585b2b90680fdd1781025caf2d1
Reviewed-on: https://skia-review.googlesource.com/148981
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
This reverts commit 2a2f675926.
Reason for revert: this appears to be what is holding up the Chrome roll.
Original change's description:
> SkTypes: extract SkTo
>
> Change-Id: I8de790d5013db2105ad885fa2683303d7c250b09
> Reviewed-on: https://skia-review.googlesource.com/133620
> Reviewed-by: Mike Klein <mtklein@google.com>
TBR=mtklein@google.com,halcanary@google.com
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Change-Id: Iafd738aedfb679a23c061a51afe4b98a8d4cdfae
Reviewed-on: https://skia-review.googlesource.com/134504
Reviewed-by: Hal Canary <halcanary@google.com>
Commit-Queue: Hal Canary <halcanary@google.com>
This is a reland of 339133f82c
Original change's description:
> start cleaning up non-skcms SkColorSpaceXforms
>
> I think this gets rid of
> - SkColorSpaceXform_Base
> - SkColorSpaceXform_XYZ
> - SkColorSpaceXform_A2B
> and lots of support code. Might be more left to clean up?
>
> Change-Id: I560d974d1e879dfd6a63ee2244a3dd88bd495c8a
> Reviewed-on: https://skia-review.googlesource.com/129512
> Commit-Queue: Brian Osman <brianosman@google.com>
> Auto-Submit: Mike Klein <mtklein@chromium.org>
> Reviewed-by: Brian Osman <brianosman@google.com>
Change-Id: I33ee0d8bcfd72c401823a2e7d5168c9ecc9a5181
Reviewed-on: https://skia-review.googlesource.com/129624
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
This reverts commit 339133f82c.
Reason for revert: broke NinePatchDrawableTest.testGetPadding? stranger things have happened.
Original change's description:
> start cleaning up non-skcms SkColorSpaceXforms
>
> I think this gets rid of
> - SkColorSpaceXform_Base
> - SkColorSpaceXform_XYZ
> - SkColorSpaceXform_A2B
> and lots of support code. Might be more left to clean up?
>
> Change-Id: I560d974d1e879dfd6a63ee2244a3dd88bd495c8a
> Reviewed-on: https://skia-review.googlesource.com/129512
> Commit-Queue: Brian Osman <brianosman@google.com>
> Auto-Submit: Mike Klein <mtklein@chromium.org>
> Reviewed-by: Brian Osman <brianosman@google.com>
TBR=mtklein@chromium.org,brianosman@google.com
Change-Id: I9e76195481b8658b34936aeece278d81c286c0fa
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://skia-review.googlesource.com/129680
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Mike Klein <mtklein@google.com>
I think this gets rid of
- SkColorSpaceXform_Base
- SkColorSpaceXform_XYZ
- SkColorSpaceXform_A2B
and lots of support code. Might be more left to clean up?
Change-Id: I560d974d1e879dfd6a63ee2244a3dd88bd495c8a
Reviewed-on: https://skia-review.googlesource.com/129512
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@chromium.org>
Reviewed-by: Brian Osman <brianosman@google.com>
The load_f16 and store_f16 stages are assuming they can load
each pixel at a time with 8 byte alignment, but as declared
the buffers are only guaranteed 2 byte alignment.
Bug: skia:7497
Change-Id: I47b29f13b48f90d2b15540979c3d87ba25dcc506
Reviewed-on: https://skia-review.googlesource.com/110321
Reviewed-by: Kevin Lubick <kjlubick@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This fills out a couple more matrix and gather stages.
Deletes a not particularly important unit test that was using a
scale matrix in a weird, non-lowp compatible way.
This will require guards for Blink layout tests.
Change-Id: I54cb228ff541f771e8f4758f07d26c5161d48af3
Reviewed-on: https://skia-review.googlesource.com/62520
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
As this array grows longer it causes troublesome code generation
when we're compiling offline, but it's easy as an argument.
Change-Id: I53526443f534f29d3bff17c3aec24a9e916c9b86
Reviewed-on: https://skia-review.googlesource.com/60564
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Herb Derby <herb@google.com>
All three image tile modes go through exclusive_clamp() and then a
gather today, so we can move the work of exclusive_clamp() into eac
gather_ stage, eliminating the need for clamp_{x,y} stages.
Luckily, we've got a convenient place to bottleneck this, ptr_and_ix(),
which works out the pointer and vector of indices to load for gathers.
This deletes SkRasterPipeline_repeat_tiling unit test, which now
no longer exactly makes sense. It tests that repeat_x does that
clamp, but that's now done automatically outside that stage.
Change-Id: I24637ef60921bec7aa00082984c0c6a49dd86ca9
Reviewed-on: https://skia-review.googlesource.com/50260
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Reed <reed@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
This makes loading into 16-bit channels more natural in _lowp.cpp.
Update a unit test to stop using out-of-range "colors".
Change-Id: I494687aac87948b60a40de447aa1527cf7167b2d
Cq-Include-Trybots: skia.primary:Test-Debian9-Clang-GCE-CPU-AVX2-x86_64-Release-UBSAN_float_cast_overflow
Reviewed-on: https://skia-review.googlesource.com/47580
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
My next step is to change the uniform_color context to
struct {
float r,g,b,a;
uint32_t rgba;
};
so that it's trivial to load in both float and 8-bit pipelines.
Change-Id: If9bdde353ced3bf9eb0c63204b4770ed614ad16b
Reviewed-on: https://skia-review.googlesource.com/30481
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
If we were doing this math with real numbers or even just doubles, these
clamps wouldn't be necessary. But we're favoring speed over accuracy
here when we emulate fmod() and some of those inaccuracies end up with
values outside the [0,tile) range, negative!
To keep the spirit of fast over 100% accurate, I've just added a safety
clamp to 0. The case in the unit test now returns 0 where it should
really return something like 7 or 8, but at least we won't try to read
_way_ outside the image buffer.
BUG=chromium:749260
Change-Id: Ifc5cfe69798beccbb2a16547510158576e06eb3a
Reviewed-on: https://skia-review.googlesource.com/29580
Reviewed-by: Florin Malita <fmalita@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
[√] convert all stages to use SkJumper_MemoryCtx / be 2d-compatible
[√] convert compile to 2d also, remove 1d run/compile
[√] convert all call sites
[√] no diffs
Change-Id: I3b806eb8fe0c3ec043359616409f7cd1211a1e43
Reviewed-on: https://skia-review.googlesource.com/24263
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
gather_i8 is now unused, so we can remove it.
That in turn makes the ctable field of SkJumper_GatherCtx unused.
After removing ctable, SkJumper_GatherCtx and SkJumper_PtrStride look
identical, so I've now fused them into SkJumper_MemoryCtx, which will
eventually be used by everything loading from, gathering from, or
storing to memory.
Change-Id: Ia882d2dbd54c9fcf9a8250a1ce83304389dd284a
Reviewed-on: https://skia-review.googlesource.com/24085
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
- Add run_2d(x,y,w,h) and start_pipeline_2d().
- Add and test a 2d-compatible store_8888_2d stage.
Change-Id: Ib9c225d1b8cb40471ae4333df1d06eec4d506f8a
Reviewed-on: https://skia-review.googlesource.com/24401
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Florin Malita <fmalita@chromium.org>
There are two remaining swap_rb uses that both look non-trivial to
replace:
- sampling out of index8 when the color table is bgra
- table transforms on bgra inputs in SkColorSpaceXform
I don't think it's a big deal to just leave swap_rb around,
just a little sad.
Change-Id: I3d30200cf867cbf37d6f86572b1574d3e22e3490
Reviewed-on: https://skia-review.googlesource.com/21040
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Change-Id: I25619f010f8ac6441529cfe8dff2d8c42d7400cf
Reviewed-on: https://skia-review.googlesource.com/20988
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Just 3 stages implemented so far:
load_8888
swap_rb
store_8888
That's enough to make the shortest non-trivial pipeline
that you see in the new unit test.
Change-Id: Iabf90866ab452f7183d8c8dec1405ece2db695dc
Reviewed-on: https://skia-review.googlesource.com/18458
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Herb Derby <herb@google.com>
y isn't used yet. This is just a warmup that updates the callers.
Change-Id: I78f4f44e2b82f72b3a39fa8a8bdadef1d1b8a99e
Reviewed-on: https://skia-review.googlesource.com/18381
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Change-Id: I25f029604a04f5fc6c249a3817b0dd84379071be
Reviewed-on: https://skia-review.googlesource.com/18149
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
CQ_INCLUDE_TRYBOTS=skia.primary:Test-Android-Clang-Nexus10-CPU-Exynos5250-arm-Release-Android
Change-Id: Ia0e9f32d0324e66c9d4812dbb156a2b858d49a13
Reviewed-on: https://skia-review.googlesource.com/18127
Commit-Queue: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
Bug: skia:6673
Change-Id: Ia2bae4f6a9039a007a10b6b45bcf2f0854bf6e5c
Reviewed-on: https://skia-review.googlesource.com/17794
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
It's easier to work on SkJumper if everything funnels through run().
I don't anticipate huge benefit from compile() without JITing,
but it's something we can always put back if we find a need.
Change-Id: Id5256fd21495e8195cad1924dbad81856416d913
Reviewed-on: https://skia-review.googlesource.com/8468
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
We've been seeding the initial values of our registers to x+0.5,y+0.5,
1,0, 0,0,0,0 (useful values for shaders to start with) in all pipelines.
This CL changes that to do so only when blitting, and only when we have
a shader.
The nicest part of this change is that SkRasterPipeline itself no longer
needs to have a concept of y, or what x means. It just marches x
through [x,x+n), and the blitter handles y and layers the meaning of
"dst x coordinate" onto x.
This ought to make SkSplicer a little easier to work with too.
dm --src gm --config f16 srgb 565 all draws the same.
Change-Id: I69d8c1cc14a06e5dfdd6a7493364f43a18f8dec5
Reviewed-on: https://skia-review.googlesource.com/7353
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
The new test would fail without the the change in SkSplicer.cpp to call fSpliced(x,x+body) instead of fSpliced(x,body). The rest of the changes are cosmetic, mostly renaming n to limit.
Change-Id: Iae28802d0adb91e962ed3ee60fa5a4334bd140f9
Reviewed-on: https://skia-review.googlesource.com/6837
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
A little JIT proof of concept for SkRasterPipeline, using xbyak, which is a header-only assembler. It's x86-only, but supports x86 very thoroughly, and it's very user friendly (at least as far as assembler libraries go...).
CQ_INCLUDE_TRYBOTS=skia.primary:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD
Change-Id: Ie17e562b0f3fff5914041badfb2c1fe4f86efab8
Reviewed-on: https://skia-review.googlesource.com/5730
Reviewed-by: Herb Derby <herb@google.com>
Reviewed-by: Heather Miller <hcm@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
CQ_INCLUDE_TRYBOTS=skia.primary:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD
Change-Id: I75e232faee6ad48f65bac5b119a461280b27bbc8
Reviewed-on: https://skia-review.googlesource.com/6661
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
CQ_INCLUDE_TRYBOTS=skia.primary:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD
Change-Id: I308b6d75f2987a667eead9a55760a2ff6aec2984
Reviewed-on: https://skia-review.googlesource.com/5353
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
For stages that have {r,g,b,a} and {dr,dg,db,da} versions, name the {r,g,b,a} one "foo" and the {dr,dg,db,da} on "foo_d". The {r,g,b,a} registers are the ones most commonly used and fastest, so they get short ordinary names, and the d-registers are less commonly used and sometimes slower, so they get a suffix.
Some stages naturally opearate on all 8 registers (the xfermodes, accumulate). These names for those look fine and aren't ambiguous.
Also, a bit more re-arrangement in _opts.h.
CQ_INCLUDE_TRYBOTS=skia.primary:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD
Change-Id: Ia20029247642798a60a2566e8a26b84ed101dbd0
Reviewed-on: https://skia-review.googlesource.com/5291
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Image shaders need to do some geometry work before sampling the image colors:
1) determine dst coordinates
2) map back to src coordinates
3) tiling
Feeding (x,y) through as (dr,dg) registers makes step 1) easy, perhaps trivial, while leaving (r,g,b,a) with their usual meanings, "the color", starting with the paint color.
This is easy to tweak into something like (x+0.5, y+0.5, 1) in (dr,dg,db) once this lands. Mostly I just want to get all the uninteresting boilerplate out of the way first.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4791
CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
Change-Id: Ia07815d942ded6672dc1df785caf80a508fc8f37
Reviewed-on: https://skia-review.googlesource.com/4791
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
This allows us to change the underlying pointer without rebuilding the pipeline, e.g. when moving the blitter from scanline to scanline.
The extra overhead when not needed is measurable but small, <2%. We can always add back direct stages later for cases where we know the context pointer will not change.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3943
Change-Id: I827d7e6e4e67d02dd2802610f898f98c5f36f8cb
Reviewed-on: https://skia-review.googlesource.com/3943
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
I'm not yet caching these in the blitter, and speed is essentially unchanged in the bench where I am now building and compiling the pipeline only once. This may not be able to stay a simple std::function after I figure out caching, but for now it's a nice fit.
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3911
Change-Id: I9545af589f73baf9f17cb4e6ace9a814c2478fe9
Reviewed-on: https://skia-review.googlesource.com/3911
Reviewed-by: Herb Derby <herb@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
I can only think there's something funky going on with the hidden
const_cast inside SkRasterPipeline.cpp, or with the Sk4h -> Sk4f
conversion. So make the const_cast visible and write the test
directly in halfs instead of floats.
CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release-GN-Trybot
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3003
Change-Id: I3a7e19ae165fce44f177b4968a63ec04e25c4b93
Reviewed-on: https://skia-review.googlesource.com/3003
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3001
CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release-GN-Trybot
Change-Id: I8d26b5484a2bf67d5d5891475640970046e470d8
Reviewed-on: https://skia-review.googlesource.com/3001
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
This reverts commit I0ed569b585f4962a90a0b6993acc484a74055177.
Reason for revert: Mac bots look okay now. I am puzzled.
Original change's description:
> Debug Mac test failure.
>
> CQ_EXTRA_TRYBOTS=master.client.skia:Test-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release-GN-Trybot
> TBR=
>
> BUG=skia:
>
> GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2933
>
> Change-Id: I0ed569b585f4962a90a0b6993acc484a74055177
> Reviewed-on: https://skia-review.googlesource.com/2933
> Reviewed-by: Mike Klein <mtklein@chromium.org>
> Commit-Queue: Mike Klein <mtklein@chromium.org>
>
TBR=mtklein@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
Change-Id: I4feef1f58172d1cc649bc311c9e6d3c86f915617
Reviewed-on: https://skia-review.googlesource.com/2963
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
CQ_EXTRA_TRYBOTS=master.client.skia:Test-Mac-Clang-MacMini6.2-CPU-AVX-x86_64-Release-GN-Trybot
TBR=
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2933
Change-Id: I0ed569b585f4962a90a0b6993acc484a74055177
Reviewed-on: https://skia-review.googlesource.com/2933
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
If we want to support VEX-encoded instructions (AVX, F16C, etc.) without a ridiculous slowdown, we need to make sure we're running either all VEX-encoded instructions or all non-VEX-encoded instructions. That means we cannot mix arbitrary user-defined SkRasterPipeline::Fn (never VEX) with those living in SkOpts (maybe VEX)... it's SkOpts or bust.
This ports the existing user-defined SkRasterPipeline::Fn use cases over to use stock stages from SkOpts. I rewrote the unit test to use stock stages, and moved the SkXfermode implementations to SkOpts. The code deleted for SkArithmeticMode_scalar should already be dead.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2940
CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
Change-Id: I94dbe766b2d65bfec6e544d260f71d721f0f5cb0
Reviewed-on: https://skia-review.googlesource.com/2940
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Mike Reed <reed@google.com>
This lets them pick up runtime CPU specializations. Here I've plugged in SSE4.1. This is still one of the N prelude CLs to full 8-at-a-time AVX.
I've moved the union of the stages used by SkRasterPipelineBench and SkRasterPipelineBlitter to SkOpts... they'll all be used by the blitter eventually. Picking up SSE4.1 specialization here (even still just 4 pixels at a time) is a significant speedup, especially to store_srgb(), so much that it's no longer really interesting to compare against the fused-but-default-instruction-set version in the bench. So that's gone now.
That left the SkRasterPipeline unit test as the only other user of the EasyFn simplified interface to SkRasterPipeline. So I converted that back down to the bare-metal interface, and EasyFn and its friends became SkRasterPipeline_opts.h exclusive abbreviations (now called Kernel_Sk4f). This isn't really unexpected: SkXfermode also wanted to build up its own little abstractions, and once you build your own abstraction, the value of an additional EasyFn-like layer plummets to negative.
For simplicity I've left the SkXfermode stages alone, except srcover() which was always part of the blitter. No particular reason except keeping the churn down while I hack. These _can_ be in SkOpts, but don't have to be until we go 8-at-a-time.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2752
CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
Change-Id: I3b476b18232a1598d8977e425be2150059ab71dc
Reviewed-on: https://skia-review.googlesource.com/2752
Reviewed-by: Mike Klein <mtklein@chromium.org>
Commit-Queue: Mike Klein <mtklein@chromium.org>
We used to step at a 4-pixel stride as long as possible, then run up to 3 times, one pixel at a time. Now replace those 1-at-a-time runs with a single tail stamp if there are 1-3 remaining pixels.
This style is simply more efficient: e.g. we'll blend and lerp once for 3 pixels instead of 3 times. This should make short blits significantly more efficient. It's also more future-oriented... AVX+ on Intel and SVE on ARM support masked loads and stores, so we can do the entire tail in one direct step.
This also makes it possible to re-arrange the code a bit to encapsulate each stage better. I think generally this code reads more clearly than the old code, but YMMV. I've arranged things so you write one function, but it's compiled into two specializations, one for tail=0 (Body) and one for tail>0 (Tail). It's pretty tidy.
For now I've just burned a register to pass around tail. It's 2 bits now, maybe soon 3 with AVX, and capped at 4 for even the craziest new toys, so there are plenty of places we can pack it if we want to get clever.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2717
Change-Id: I45852a3e5d4c5b5e9315302c46601aee0d32265f
Reviewed-on: https://skia-review.googlesource.com/2717
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Most visibly this adds a macro SK_RASTER_STAGE that cuts down on the boilerplate of defining a raster pipeline stage function.
Most interestingly, SK_RASTER_STAGE doesn't define a SkRasterPipeline::Fn, but rather a new type EasyFn. This function is always static and inlined, and the details of interacting with the SkRasterPipeline::Stage are taken care of for you: ctx is just passed as a void*, and st->next() is always called. All EasyFns have to do is take care of the meat of the work: update r,g,b, etc. and read and write from their context.
The really neat new feature here is that you can either add EasyFns to a pipeline with the new append() functions, _or_ call them directly yourself. This lets you use the same set of pieces to build either a pipelined version of the function or a custom, fused version. The bench shows this off.
On my desktop, the pipeline version of the bench takes about 25% more time to run than the fused one.
The old approach to creating stages still works fine. I haven't updated SkXfermode.cpp or SkArithmeticMode.cpp because they seemed just as clear using Fn directly as they would have using EasyFn.
If this looks okay to you I will rework the comments in SkRasterPipeline to explain SK_RASTER_STAGE and EasyFn a bit as I've done here in the CL description.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2195853002
Review-Url: https://codereview.chromium.org/2195853002
