SkSurfaceProps now has a gamma-correct ("AllowSRGBInputs") flag. That's propagated in a few places so that the backend can do the right thing for L32 vs S32 mode.

Also added SkSurfaceProps to SkSpecialImage, so that Image -> Surface conversion can preserve the desired behavior during filtering.

Many small changes, including a bunch of comments about places where we may be losing information right now. My approach was to ensure that if anything fails, it will always fall back to "legacy" mode - gamma-correctness is opt-in, so I'll just have to feed things through as missing cases are exposed.
BUG=skia:
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1838953007

Review URL: https://codereview.chromium.org/1845283003

1 files changed, 6 insertions, 2 deletions

diff --git a/gm/dftext.cpp b/gm/dftext.cpp
index 0d5b1ff4e9..c66064a8d4 100644
--- a/gm/dftext.cpp
+++ b/gm/dftext.cpp
@@ -48,8 +48,12 @@ protected:
         // set up offscreen rendering with distance field text
 #if SK_SUPPORT_GPU
         GrContext* ctx = inputCanvas->getGrContext();
-        SkImageInfo info = SkImageInfo::MakeN32Premul(onISize());
-        SkSurfaceProps props(SkSurfaceProps::kUseDeviceIndependentFonts_Flag,
+        SkImageInfo info = SkImageInfo::MakeN32Premul(onISize(),
+                                                      inputCanvas->imageInfo().profileType());
+        SkSurfaceProps canvasProps(SkSurfaceProps::kLegacyFontHost_InitType);
+        uint32_t allowSRGBInputs = inputCanvas->getProps(&canvasProps)
+            ? canvasProps.flags() & SkSurfaceProps::kAllowSRGBInputs_Flag : 0;
+        SkSurfaceProps props(SkSurfaceProps::kUseDeviceIndependentFonts_Flag | allowSRGBInputs,
                              SkSurfaceProps::kLegacyFontHost_InitType);
         auto surface(SkSurface::MakeRenderTarget(ctx, SkBudgeted::kNo, info, 0, &props));
         SkCanvas* canvas = surface ? surface->getCanvas() : inputCanvas;