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| author |  Mike Klein <mtklein@chromium.org> | 2016-11-03 12:22:01 -0400 |
|---|---|---|
| committer |  Skia Commit-Bot <skia-commit-bot@chromium.org> | 2016-11-03 17:15:15 +0000 |
| commit | 668661700127e8e340c1d731d2b9fc5ea443163f (patch) | |
| tree | e4236242117029f5c78e5b8e24c2ef23cc319524 /src/opts | |
| parent | 37d1b49ae85a6f0299b36104c666defbc513dbb9 (diff) | |
Basic pipeline blend mode strength reductions:
- when the shader is opaque, srcover becomes src
- don't load dst when blitting in src mode with full coverage
- fold coverage into src alpha when in srcover mode
It's not obvious that we can fold coverage into src alpha when using a 565 mask, so I've not attempted that. What would we do about alpha?
Over all GMs this causes a single 1-bit difference in sRGB mode. No 565 or f16 diffs.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4349
CQ_INCLUDE_TRYBOTS=master.client.skia:Test-Ubuntu-GCC-GCE-CPU-AVX2-x86_64-Release-SKNX_NO_SIMD-Trybot
Change-Id: Ib9161f498c4efa6b348ca74522166da64d09a7da
Reviewed-on: https://skia-review.googlesource.com/4349
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Mike Klein <mtklein@chromium.org>
Diffstat (limited to 'src/opts')
| -rw-r--r-- | src/opts/SkRasterPipeline_opts.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/opts/SkRasterPipeline_opts.h b/src/opts/SkRasterPipeline_opts.h index 9f15391918..950264efb1 100644 --- a/src/opts/SkRasterPipeline_opts.h +++ b/src/opts/SkRasterPipeline_opts.h @@ -235,6 +235,16 @@ STAGE(constant_color, true) { a = color->a(); } +// s' = sc for a constant c. +STAGE(scale_constant_float, true) { + SkNf c = *(const float*)ctx; + + r *= c; + g *= c; + b *= c; + a *= c; +} + // s' = d(1-c) + sc, for a constant c. STAGE(lerp_constant_float, true) { SkNf c = *(const float*)ctx; |