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/*
* 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 GrProcessorUnitTest_DEFINED
#define GrProcessorUnitTest_DEFINED
#include "GrTestUtils.h"
#include "SkTArray.h"
#include "SkTypes.h"
class SkMatrix;
class GrCaps;
class GrContext;
struct GrProcessorTestData;
namespace GrProcessorUnitTest {
// Used to access the dummy textures in TestCreate procs.
enum {
kSkiaPMTextureIdx = 0,
kAlphaTextureIdx = 1,
};
/** This allows parent FPs to implement a test create with known leaf children in order to avoid
creating an unbounded FP tree which may overflow various shader limits. */
const GrFragmentProcessor* CreateChildFP(GrProcessorTestData*);
}
/*
* GrProcessorTestData is an argument struct to TestCreate functions
* fTextures 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.
*/
struct GrProcessorTestData {
GrProcessorTestData(SkRandom* random,
GrContext* context,
const GrCaps* caps,
GrTexture* textures[2])
: fRandom(random)
, fContext(context)
, fCaps(caps) {
fTextures[0] = textures[0];
fTextures[1] = textures[1];
}
SkRandom* fRandom;
GrContext* fContext;
const GrCaps* fCaps;
GrTexture* fTextures[2];
};
#if SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
class GrProcessor;
class GrTexture;
template <class Processor> class GrProcessorTestFactory : SkNoncopyable {
public:
typedef const Processor* (*CreateProc)(GrProcessorTestData*);
GrProcessorTestFactory(CreateProc createProc) {
fCreateProc = createProc;
GetFactories()->push_back(this);
}
/** Pick a random factory function and create a processor. */
static const Processor* Create(GrProcessorTestData* data) {
VerifyFactoryCount();
SkASSERT(GetFactories()->count());
uint32_t idx = data->fRandom->nextRangeU(0, GetFactories()->count() - 1);
return CreateIdx(idx, data);
}
/** Number of registered factory functions */
static int Count() { return GetFactories()->count(); }
/** Use factory function at Index idx to create a processor. */
static const Processor* CreateIdx(int idx, GrProcessorTestData* data) {
GrProcessorTestFactory<Processor>* factory = (*GetFactories())[idx];
return factory->fCreateProc(data);
}
/*
* A test function which verifies the count of factories.
*/
static void VerifyFactoryCount();
private:
CreateProc fCreateProc;
static SkTArray<GrProcessorTestFactory<Processor>*, true>* GetFactories();
};
/** GrProcessor subclasses should insert this macro in their declaration to be included in the
* program generation unit test.
*/
#define GR_DECLARE_GEOMETRY_PROCESSOR_TEST \
static GrProcessorTestFactory<GrGeometryProcessor> gTestFactory SK_UNUSED; \
static const GrGeometryProcessor* TestCreate(GrProcessorTestData*)
#define GR_DECLARE_FRAGMENT_PROCESSOR_TEST \
static GrProcessorTestFactory<GrFragmentProcessor> gTestFactory SK_UNUSED; \
static const GrFragmentProcessor* TestCreate(GrProcessorTestData*)
#define GR_DECLARE_XP_FACTORY_TEST \
static GrProcessorTestFactory<GrXPFactory> gTestFactory SK_UNUSED; \
static const GrXPFactory* TestCreate(GrProcessorTestData*)
/** GrProcessor subclasses should insert this macro in their implementation file. They must then
* also implement this static function:
* GrProcessor* TestCreate(GrProcessorTestData*);
*/
#define GR_DEFINE_FRAGMENT_PROCESSOR_TEST(Effect) \
GrProcessorTestFactory<GrFragmentProcessor> Effect :: gTestFactory(Effect :: TestCreate)
#define GR_DEFINE_XP_FACTORY_TEST(Factory) \
GrProcessorTestFactory<GrXPFactory> Factory :: gTestFactory(Factory :: TestCreate)
#define GR_DEFINE_GEOMETRY_PROCESSOR_TEST(Effect) \
GrProcessorTestFactory<GrGeometryProcessor> 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_FRAGMENT_PROCESSOR_TEST \
static const GrFragmentProcessor* TestCreate(GrProcessorTestData*)
#define GR_DEFINE_FRAGMENT_PROCESSOR_TEST(X)
// The unit test relies on static initializers. Just declare the TestCreate function so that
// its definitions will compile.
#define GR_DECLARE_XP_FACTORY_TEST \
static const GrXPFactory* TestCreate(GrProcessorTestData*)
#define GR_DEFINE_XP_FACTORY_TEST(X)
// The unit test relies on static initializers. Just declare the TestCreate function so that
// its definitions will compile.
#define GR_DECLARE_GEOMETRY_PROCESSOR_TEST \
static const GrGeometryProcessor* TestCreate(GrProcessorTestData*)
#define GR_DEFINE_GEOMETRY_PROCESSOR_TEST(X)
#endif // !SK_ALLOW_STATIC_GLOBAL_INITIALIZERS
#endif
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