Replaced all calls to fragmentPosition() with sk_FragCoord

BUG=skia:

Change-Id: I179576e148ea6caf6e1c40f0a216421898bcb35d
Reviewed-on: https://skia-review.googlesource.com/5941
Commit-Queue: Ethan Nicholas <ethannicholas@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 8 insertions, 1 deletions

diff --git a/src/sksl/ir/SkSLProgram.h b/src/sksl/ir/SkSLProgram.h
index 6a73be6983..e4a975b279 100644
--- a/src/sksl/ir/SkSLProgram.h
+++ b/src/sksl/ir/SkSLProgram.h
@@ -27,6 +27,8 @@ namespace SkSL {
 struct Program {
     struct Settings {
         const GrShaderCaps* fCaps = nullptr;
+        // if false, sk_FragCoord is exactly the same as gl_FragCoord. If true, the y coordinate
+        // must be flipped.
         bool fFlipY = false;
     };
 
@@ -34,12 +36,17 @@ struct Program {
         // if true, this program requires the render target height uniform to be defined
         bool fRTHeight;
 
+        // if true, this program must be recompiled if the flipY setting changes. If false, the
+        // program will compile to the same code regardless of the flipY setting.
+        bool fFlipY;
+
         void reset() {
             fRTHeight = false;
+            fFlipY = false;
         }
 
         bool isEmpty() {
-            return !fRTHeight;
+            return !fRTHeight && !fFlipY;
         }
     };