Add SkColorSpace factory from 3x3 row-major gamut and transfer function

Moved named common transfer functions and gamuts to constexpr values in
SkColorSpace.h, in SkNamedTransferFn and SkNamedGamut namespaces.

Converted nearly all SkColorSpace::MakeRGB calls within Skia to use the
new factory with the named values. Multiple clients want a way to
extract named transfer function and gamut - this still doesn't provide
that, but this may be a better path forward for honestly advertising how
SkColorSpace works internally.

Bug: skia:
Change-Id: I9296d67e8f0dab5ceb49869cb3ba24e98a05f3c4
Reviewed-on: https://skia-review.googlesource.com/c/180360
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>

1 files changed, 1 insertions, 4 deletions

diff --git a/bench/nanobench.cpp b/bench/nanobench.cpp
index 21bed94212..35fcefac01 100644
--- a/bench/nanobench.cpp
+++ b/bench/nanobench.cpp
@@ -478,10 +478,7 @@ static void create_config(const SkCommandLineConfig* config, SkTArray<Config>* c
     CPU_CONFIG(565,  kRaster_Backend, kRGB_565_SkColorType, kOpaque_SkAlphaType, nullptr)
 
     // 'narrow' has a gamut narrower than sRGB, and different transfer function.
-    SkMatrix44 narrow_gamut;
-    narrow_gamut.set3x3RowMajorf(gNarrow_toXYZD50);
-
-    auto narrow = SkColorSpace::MakeRGB(k2Dot2Curve_SkGammaNamed, narrow_gamut),
+    auto narrow = SkColorSpace::MakeRGB(SkNamedTransferFn::k2Dot2, gNarrow_toXYZD50),
            srgb = SkColorSpace::MakeSRGB(),
      srgbLinear = SkColorSpace::MakeSRGBLinear();