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, 9 insertions, 0 deletions

diff --git a/include/gpu/GrPaint.h b/include/gpu/GrPaint.h
index 3f06f092ab..87e0368655 100644
--- a/include/gpu/GrPaint.h
+++ b/include/gpu/GrPaint.h
@@ -63,6 +63,13 @@ public:
     void setDisableOutputConversionToSRGB(bool srgb) { fDisableOutputConversionToSRGB = srgb; }
     bool getDisableOutputConversionToSRGB() const { return fDisableOutputConversionToSRGB; }
 
+    /**
+     * Should sRGB inputs be allowed to perform sRGB to linear conversion. With this flag
+     * set to false, sRGB textures will be treated as linear (including filtering).
+     */
+    void setAllowSRGBInputs(bool allowSRGBInputs) { fAllowSRGBInputs = allowSRGBInputs; }
+    bool getAllowSRGBInputs() const { return fAllowSRGBInputs; }
+
     const GrXPFactory* setXPFactory(const GrXPFactory* xpFactory) {
         fXPFactory.reset(SkSafeRef(xpFactory));
         return xpFactory;
@@ -120,6 +127,7 @@ public:
     GrPaint& operator=(const GrPaint& paint) {
         fAntiAlias = paint.fAntiAlias;
         fDisableOutputConversionToSRGB = paint.fDisableOutputConversionToSRGB;
+        fAllowSRGBInputs = paint.fAllowSRGBInputs;
 
         fColor = paint.fColor;
         this->resetFragmentProcessors();
@@ -163,6 +171,7 @@ private:
 
     bool                                            fAntiAlias;
     bool                                            fDisableOutputConversionToSRGB;
+    bool                                            fAllowSRGBInputs;
 
     GrColor                                         fColor;
 };