diff -r 000000000000 -r 6474c204b198 gfx/skia/trunk/include/gpu/GrEffectUnitTest.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gfx/skia/trunk/include/gpu/GrEffectUnitTest.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,101 @@
+/*
+ * Copyright 2012 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+#ifndef GrEffectUnitTest_DEFINED
+#define GrEffectUnitTest_DEFINED
+
+#include "SkRandom.h"
+#include "SkTArray.h"
+#include "SkTypes.h"
+
+class SkMatrix;
+class GrDrawTargetCaps;
+
+namespace GrEffectUnitTest {
+// Used to access the dummy textures in TestCreate procs.
+enum {
+    kSkiaPMTextureIdx = 0,
+    kAlphaTextureIdx = 1,
+};
+
+/**
+ * A helper for use in GrEffect::TestCreate functions.
+ */
+const SkMatrix& TestMatrix(SkRandom*);
+
+}
+
+#if SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
+
+class GrContext;
+class GrEffectRef;
+class GrTexture;
+
+class GrEffectTestFactory : public SkNoncopyable {
+public:
+
+    typedef GrEffectRef* (*CreateProc)(SkRandom*,
+                                       GrContext*,
+                                       const GrDrawTargetCaps& caps,
+                                       GrTexture* dummyTextures[]);
+
+    GrEffectTestFactory(CreateProc createProc) {
+        fCreateProc = createProc;
+        GetFactories()->push_back(this);
+    }
+
+    static GrEffectRef* CreateStage(SkRandom* random,
+                                    GrContext* context,
+                                    const GrDrawTargetCaps& caps,
+                                    GrTexture* dummyTextures[]) {
+        uint32_t idx = random->nextRangeU(0, GetFactories()->count() - 1);
+        GrEffectTestFactory* factory = (*GetFactories())[idx];
+        return factory->fCreateProc(random, context, caps, dummyTextures);
+    }
+
+private:
+    CreateProc fCreateProc;
+    static SkTArray<GrEffectTestFactory*, true>* GetFactories();
+};
+
+/** GrEffect subclasses should insert this macro in their declaration to be included in the
+ *  program generation unit test.
+ */
+#define GR_DECLARE_EFFECT_TEST                                                      \
+    static GrEffectTestFactory gTestFactory;                                        \
+    static GrEffectRef* TestCreate(SkRandom*,                                       \
+                                   GrContext*,                                      \
+                                   const GrDrawTargetCaps&,                         \
+                                   GrTexture* dummyTextures[2])
+
+/** GrEffect subclasses should insert this macro in their implementation file. They must then
+ *  also implement this static function:
+ *      GrEffect* TestCreate(SkRandom*,
+ *                           GrContext*,
+ *                           const GrDrawTargetCaps&,
+ *                           GrTexture* dummyTextures[2]);
+ * dummyTextures[] are valid textures that can optionally be used to construct GrTextureAccesses.
+ * The first texture has config kSkia8888_GrPixelConfig and the second has
+ * kAlpha_8_GrPixelConfig. TestCreate functions are also free to create additional textures using
+ * the GrContext.
+ */
+#define GR_DEFINE_EFFECT_TEST(Effect)                                               \
+    GrEffectTestFactory Effect :: gTestFactory(Effect :: TestCreate)
+
+#else // !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
+
+// The unit test relies on static initializers. Just declare the TestCreate function so that
+// its definitions will compile.
+#define GR_DECLARE_EFFECT_TEST                                                      \
+    static GrEffectRef* TestCreate(SkRandom*,                                       \
+                                   GrContext*,                                      \
+                                   const GrDrawTargetCaps&,                         \
+                                   GrTexture* dummyTextures[2])
+#define GR_DEFINE_EFFECT_TEST(X)
+
+#endif // !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
+#endif