Add gltestpersistentcache config that tests GrContextOption's cache.

Uses a new GPU sink that runs each test twice, once to populate the
cache and then again with a new GrContext but a warmed cache. It
verifies that the two generated images are the same.

Change-Id: Iaba195a69751f14ea946afe7174228a813b83a63
Reviewed-on: https://skia-review.googlesource.com/140567
Commit-Queue: Brian Salomon <bsalomon@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>

1 files changed, 20 insertions, 0 deletions

diff --git a/dm/DMSrcSink.h b/dm/DMSrcSink.h
index 9c31c0ab22..86c2279439 100644
--- a/dm/DMSrcSink.h
+++ b/dm/DMSrcSink.h
@@ -386,6 +386,26 @@ private:
     typedef GPUSink INHERITED;
 };
 
+class GPUPersistentCacheTestingSink : public GPUSink {
+public:
+    GPUPersistentCacheTestingSink(sk_gpu_test::GrContextFactory::ContextType,
+                                  sk_gpu_test::GrContextFactory::ContextOverrides,
+                                  SkCommandLineConfigGpu::SurfType surfType, int samples,
+                                  bool diText, SkColorType colorType, SkAlphaType alphaType,
+                                  sk_sp<SkColorSpace> colorSpace, bool threaded,
+                                  const GrContextOptions& grCtxOptions);
+
+    Error draw(const Src&, SkBitmap*, SkWStream*, SkString*) const override;
+
+    const char* fileExtension() const override {
+        // Suppress writing out results from this config - we just want to do our matching test
+        return nullptr;
+    }
+
+private:
+    typedef GPUSink INHERITED;
+};
+
 class PDFSink : public Sink {
 public:
     PDFSink(bool pdfa, SkScalar rasterDpi) : fPDFA(pdfa), fRasterDpi(rasterDpi) {}