Support multiple null GL contexts on a thread.

This has the side effect of requiring SkNullGLContext to use the null GL interface.

It exposes SkNullGLContext and also removes null context support from SampleApp.

Review URL: https://codereview.chromium.org/916733002

1 files changed, 29 insertions, 0 deletions

diff --git a/include/gpu/gl/SkNullGLContext.h b/include/gpu/gl/SkNullGLContext.h
new file mode 100644
index 0000000000..1715cfe597
--- /dev/null
+++ b/include/gpu/gl/SkNullGLContext.h
@@ -0,0 +1,29 @@
+
+/*
+ * Copyright 2011 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+#ifndef SkNullGLContext_DEFINED
+#define SkNullGLContext_DEFINED
+
+#include "gl/SkGLContext.h"
+
+class SK_API SkNullGLContext : public SkGLContext {
+public:
+    ~SkNullGLContext() SK_OVERRIDE;
+    void makeCurrent() const SK_OVERRIDE;
+    void swapBuffers() const SK_OVERRIDE {};
+
+    static SkNullGLContext* Create(GrGLStandard);
+
+    struct ContextState;
+
+private:
+    SkNullGLContext();
+
+    ContextState* fState;
+};
+
+#endif