Add a workaround for inaccurate interpolants on Adreno 3xx.

Also ensure that sk_FragCoord x and y values are at pixel centers when
workaround is used.

Change-Id: Ib748af9e496a406a50622e00e96e1346cbb5eb26
Reviewed-on: https://skia-review.googlesource.com/97064
Reviewed-by: Brian Osman <brianosman@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/sksl/SkSLGLSLCodeGenerator.h b/src/sksl/SkSLGLSLCodeGenerator.h
index 70ce920900..2b308e3702 100644
--- a/src/sksl/SkSLGLSLCodeGenerator.h
+++ b/src/sksl/SkSLGLSLCodeGenerator.h
@@ -212,6 +212,7 @@ protected:
     bool fFoundGSInvocations = false;
     bool fSetupFragPositionGlobal = false;
     bool fSetupFragPositionLocal = false;
+    bool fSetupFragCoordWorkaround = false;
 
     typedef CodeGenerator INHERITED;
 };