Move dither toggle logic into common helper functions, to make it easier to
change their behavior later. No functional change.
Review URL: https://codereview.appspot.com/7241063
git-svn-id: http://skia.googlecode.com/svn/trunk@7525 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/effects/gradients/SkGradientShaderPriv.h b/src/effects/gradients/SkGradientShaderPriv.h
index d35fb1c..4d14dc6 100644
--- a/src/effects/gradients/SkGradientShaderPriv.h
+++ b/src/effects/gradients/SkGradientShaderPriv.h
@@ -175,6 +175,22 @@
typedef SkShader INHERITED;
};
+static inline int init_dither_toggle(int x, int y) {
+ return ((x ^ y) & 1) * SkGradientShaderBase::kDitherStride32;
+}
+
+static inline int next_dither_toggle(int toggle) {
+ return toggle ^ SkGradientShaderBase::kDitherStride32;
+}
+
+static inline int init_dither_toggle16(int x, int y) {
+ return ((x ^ y) & 1) * SkGradientShaderBase::kDitherStride16;
+}
+
+static inline int next_dither_toggle16(int toggle) {
+ return toggle ^ SkGradientShaderBase::kDitherStride16;
+}
+
///////////////////////////////////////////////////////////////////////////////
#if SK_SUPPORT_GPU