Support decoding images to multiple formats, depending on usage

Our codec generator will now preserve any asked-for color space, and
convert the encoded data to that representation. Cacherator now
allows decoding an image to both legacy (nullptr color space), and
color-correct formats. In color-correct mode, we choose the best
decoded format, based on the original properties, and our backend's
capabilities. Preference is given to the native format, when it's
already texturable (sRGB 8888 or F16 linear). Otherwise, we prefer
linear F16, and fall back to sRGB when that's not an option.

BUG=skia:5907

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4438

Change-Id: I847c243dcfb72d8c0f1f6fc73c09547adea933f0
Reviewed-on: https://skia-review.googlesource.com/4438
Reviewed-by: Matt Sarett <msarett@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>

1 files changed, 12 insertions, 3 deletions

diff --git a/tests/SpecialImageTest.cpp b/tests/SpecialImageTest.cpp
index 62a5da6089..8cd874a3c8 100644
--- a/tests/SpecialImageTest.cpp
+++ b/tests/SpecialImageTest.cpp
@@ -155,19 +155,20 @@ DEF_TEST(SpecialImage_Raster, reporter) {
     }
 }
 
-DEF_TEST(SpecialImage_Image, reporter) {
+static void test_specialimage_image(skiatest::Reporter* reporter,
+                                    SkDestinationSurfaceColorMode colorMode) {
     SkBitmap bm = create_bm();
 
     sk_sp<SkImage> fullImage(SkImage::MakeFromBitmap(bm));
 
     sk_sp<SkSpecialImage> fullSImage(SkSpecialImage::MakeFromImage(
                                                             SkIRect::MakeWH(kFullSize, kFullSize),
-                                                            fullImage));
+                                                            fullImage, colorMode));
 
     const SkIRect& subset = SkIRect::MakeXYWH(kPad, kPad, kSmallerSize, kSmallerSize);
 
     {
-        sk_sp<SkSpecialImage> subSImg1(SkSpecialImage::MakeFromImage(subset, fullImage));
+        sk_sp<SkSpecialImage> subSImg1(SkSpecialImage::MakeFromImage(subset, fullImage, colorMode));
         test_image(subSImg1, reporter, nullptr, false, kPad, kFullSize);
     }
 
@@ -177,6 +178,14 @@ DEF_TEST(SpecialImage_Image, reporter) {
     }
 }
 
+DEF_TEST(SpecialImage_Image_Legacy, reporter) {
+    test_specialimage_image(reporter, SkDestinationSurfaceColorMode::kLegacy);
+}
+
+DEF_TEST(SpecialImage_Image_ColorSpaceAware, reporter) {
+    test_specialimage_image(reporter, SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware);
+}
+
 #if SK_SUPPORT_GPU
 
 static void test_texture_backed(skiatest::Reporter* reporter,