Add helper for idenitfying hw GrAATypes.

Change-Id: I7f4e5d87706df24ffb94e41902e0746bd149d733
Reviewed-on: https://skia-review.googlesource.com/5922
Reviewed-by: Robert Phillips <robertphillips@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>

1 files changed, 19 insertions, 4 deletions

diff --git a/include/gpu/GrTypesPriv.h b/include/gpu/GrTypesPriv.h
index 53e71e74ab..a0e96a2a22 100644
--- a/include/gpu/GrTypesPriv.h
+++ b/include/gpu/GrTypesPriv.h
@@ -26,10 +26,25 @@ enum class GrAAType {
     kMixedSamples
 };
 
- /**
-  * Types of shader-language-specific boxed variables we can create. (Currently only GrGLShaderVars,
-  * but should be applicable to other shader languages.)
-  */
+static inline bool GrAATypeIsHW(GrAAType type) {
+    switch (type) {
+        case GrAAType::kNone:
+            return false;
+        case GrAAType::kCoverage:
+            return false;
+        case GrAAType::kMSAA:
+            return true;
+        case GrAAType::kMixedSamples:
+            return true;
+    }
+    SkFAIL("Unknown AA Type");
+    return false;
+}
+
+/**
+ * Types of shader-language-specific boxed variables we can create. (Currently only GrGLShaderVars,
+ * but should be applicable to other shader languages.)
+ */
 enum GrSLType {
     kVoid_GrSLType,
     kBool_GrSLType,