Add SkSurfaceCharacterization::createResized

Change-Id: Ia98ce3cf6c0b9f9100eea9850af56048e43b8d07
Reviewed-on: https://skia-review.googlesource.com/112580
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>

1 files changed, 27 insertions, 0 deletions

diff --git a/tests/DeferredDisplayListTest.cpp b/tests/DeferredDisplayListTest.cpp
index 924a93464a..4b425aed7e 100644
--- a/tests/DeferredDisplayListTest.cpp
+++ b/tests/DeferredDisplayListTest.cpp
@@ -313,6 +313,33 @@ DEF_GPUTEST_FOR_ALL_CONTEXTS(DDLSurfaceCharacterizationTest, reporter, ctxInfo)
         SkSurfaceCharacterization c;
         REPORTER_ASSERT(reporter, !rasterSurface->characterize(&c));
     }
+
+    // Exercise the createResized method
+    {
+        SurfaceParameters params;
+
+        sk_sp<SkSurface> s = params.make(context);
+        if (!s) {
+            return;
+        }
+
+        SkSurfaceCharacterization char0;
+        SkAssertResult(s->characterize(&char0));
+
+        // Too small
+        SkSurfaceCharacterization char1 = char0.createResized(-1, -1);
+        REPORTER_ASSERT(reporter, !char1.isValid());
+
+        // Too large
+        SkSurfaceCharacterization char2 = char0.createResized(1000000, 32);
+        REPORTER_ASSERT(reporter, !char2.isValid());
+
+        // Just right
+        SkSurfaceCharacterization char3 = char0.createResized(32, 32);
+        REPORTER_ASSERT(reporter, char3.isValid());
+        REPORTER_ASSERT(reporter, 32 == char3.width());
+        REPORTER_ASSERT(reporter, 32 == char3.height());
+    }
 }
 
 static constexpr int kSize = 8;