Add SkColorSpace_Base::makeColorSpin

This is a utility that creates a version of an existing XYZ color space
that performs our color spin operation. Assigning this to a source remaps
RGB to GBR. Assigning it to a destination does the opposite (RGB to BRG).

Bug: skia:
Change-Id: I3528698220bd32aa01dcd3db225e60f151a4b5bd
Reviewed-on: https://skia-review.googlesource.com/71280
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@chromium.org>

1 files changed, 1 insertions, 13 deletions

diff --git a/tools/create_flutter_test_images.cpp b/tools/create_flutter_test_images.cpp
index 69a0d112a3..2fa39f6c75 100644
--- a/tools/create_flutter_test_images.cpp
+++ b/tools/create_flutter_test_images.cpp
@@ -15,19 +15,7 @@
  *  Create a color space that swaps the red, green, and blue channels.
  */
 static sk_sp<SkColorSpace> gbr_color_space() {
-    float gbr[9];
-    gbr[0] = gSRGB_toXYZD50[1];
-    gbr[1] = gSRGB_toXYZD50[2];
-    gbr[2] = gSRGB_toXYZD50[0];
-    gbr[3] = gSRGB_toXYZD50[4];
-    gbr[4] = gSRGB_toXYZD50[5];
-    gbr[5] = gSRGB_toXYZD50[3];
-    gbr[6] = gSRGB_toXYZD50[7];
-    gbr[7] = gSRGB_toXYZD50[8];
-    gbr[8] = gSRGB_toXYZD50[6];
-    SkMatrix44 toXYZD50(SkMatrix44::kUninitialized_Constructor);
-    toXYZD50.set3x3RowMajorf(gbr);
-    return SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, toXYZD50);
+    return as_CSB(SkColorSpace::MakeSRGB())->makeColorSpin();
 }
 
 /**