#include <dali-toolkit-test-suite-utils.h>
+#include <toolkit-environment-variable.h>
#include <toolkit-event-thread-callback.h>
#include <toolkit-timer.h>
#include <dali-toolkit/public-api/image-loader/image-url.h>
#include <dali-toolkit/public-api/image-loader/image.h>
-#include <test-encoded-image-buffer.h>
#include "dummy-control.h"
+#include "test-encoded-image-buffer.h"
#include "test-native-image-source.h"
using namespace Dali;
const char* TEST_REMOTE_INVALID_FILE_NAME = "https://www.tizen.org/invalid.png";
const char* TEST_MASK_IMAGE_FILE_NAME = TEST_RESOURCE_DIR "/mask.png";
const char* TEST_ROTATED_IMAGE = TEST_RESOURCE_DIR "/keyboard-Landscape.jpg";
+const char* TEST_YUV420_IMAGE_FILE_NAME = TEST_RESOURCE_DIR "/gallery-small-1-yuv420.jpg";
+const char* TEST_N_PATCH_IMAGE_FILE_NAME = TEST_RESOURCE_DIR "/heartsframe.9.png";
+
+constexpr auto LOAD_IMAGE_YUV_PLANES_ENV = "DALI_LOAD_IMAGE_YUV_PLANES_ENV";
bool gResourceReadySignalFired = false;
std::vector<int> gReadyIds = {};
DALI_TEST_EQUALS(actor2.GetRendererCount(), 1u, TEST_LOCATION);
- tet_infoline(
- "Test that 2 draw calls occur with no new texture gens/binds, i.e. both\n"
- "draw calls use the same texture as the previous draw call\n");
-
+ // Testing for texture re-use in gl side is not relevant - we are not using actual graphics
+ // backend here, but test graphics backend.
DALI_TEST_EQUALS(textureTrace.FindMethod("GenTextures"), false, TEST_LOCATION);
DALI_TEST_EQUALS(drawTrace.CountMethod("DrawArrays"), 2, TEST_LOCATION);
- // TODO: Temporarily commented out the line below when caching is disabled. Will need to add it back.
- // DALI_TEST_EQUALS( textureTrace.CountMethod("BindTexture"), 0, TEST_LOCATION );
tet_infoline("Test that removing 1 actor doesn't delete the texture\n");
DALI_TEST_EQUALS(application.GetGlAbstraction().CheckUniformValue<Vector4>("uColor", Vector4(1.0f, 1.0f, 1.0f, 0.5f)), true, TEST_LOCATION);
DALI_TEST_EQUALS(application.GetGlAbstraction().CheckUniformValue<Vector3>("mixColor", Vector3(TARGET_MIX_COLOR)), true, TEST_LOCATION);
- // GL_BLEND should not be changed: Keep enabled
- // TODO: Temporarily commented out the line below when caching is disabled. Will need to add it back.
- // DALI_TEST_CHECK( !glEnableStack.FindMethodAndParams( "Enable", blendStr.str().c_str() ) );
- DALI_TEST_CHECK(!glEnableStack.FindMethodAndParams("Disable", blendStr.str()));
+ // (Don't test for caching of capabilities, toolkit uses Test graphics backend, not actual backend)
TestMixColor(visual, Visual::Property::MIX_COLOR, TARGET_MIX_COLOR);
DALI_TEST_CHECK(application.GetGlAbstraction().GetUniformValue<Vector4>("uColor", color));
DALI_TEST_EQUALS(color.a, 1.0f, TEST_LOCATION);
- // TODO: Temporarily commented out the line below when caching is disabled. Will need to add it back.
- // DALI_TEST_CHECK( !glEnableStack.FindMethodAndParams( "Enable", blendStr.str().c_str() ) );
+ // (Don't test for caching of capabilities, toolkit uses Test graphics backend, not actual backend)
DALI_TEST_CHECK(glEnableStack.FindMethodAndParams("Disable", blendStr.str()));
}
DALI_TEST_CHECK(application.GetGlAbstraction().GetUniformValue<Vector4>("uColor", color));
DALI_TEST_EQUALS(color.a, 0.1f, TEST_LOCATION);
- // GL_BLEND should not be changed: Keep enabled
- // @todo
- // TODO: Temporarily commented out the line below when caching is disabled. Will need to add it back.
- // DALI_TEST_CHECK( !glEnableStack.FindMethodAndParams( "Enable", blendStr.str() ) );
+ // (Don't test for caching of capabilities, toolkit uses Test graphics backend, not actual backend)
DALI_TEST_CHECK(!glEnableStack.FindMethodAndParams("Disable", blendStr.str()));
}
END_TEST;
}
-int UtcDaliImageVisualAlphaMask(void)
+int UtcDaliImageVisualAlphaMask01(void)
{
ToolkitTestApplication application;
tet_infoline("Request image visual with a Property::Map containing an Alpha mask");
END_TEST;
}
-int UtcDaliImageVisualSynchronousLoadAlphaMask(void)
+int UtcDaliImageVisualAlphaMask02(void)
+{
+ ToolkitTestApplication application;
+ tet_infoline("Request image visual with a Property::Map containing an Alpha mask for GPU");
+
+ VisualFactory factory = VisualFactory::Get();
+ DALI_TEST_CHECK(factory);
+
+ Property::Map propertyMap;
+ propertyMap.Insert(Toolkit::Visual::Property::TYPE, Visual::IMAGE);
+ propertyMap.Insert(ImageVisual::Property::URL, TEST_LARGE_IMAGE_FILE_NAME);
+ propertyMap.Insert(ImageVisual::Property::ALPHA_MASK_URL, TEST_MASK_IMAGE_FILE_NAME);
+ propertyMap.Insert(DevelImageVisual::Property::MASKING_TYPE, DevelImageVisual::MaskingType::MASKING_ON_RENDERING);
+
+ Visual::Base visual = factory.CreateVisual(propertyMap);
+ DALI_TEST_CHECK(visual);
+
+ Property::Map testMap;
+ visual.CreatePropertyMap(testMap);
+ DALI_TEST_EQUALS(*testMap.Find(ImageVisual::Property::ALPHA_MASK_URL), Property::Value(TEST_MASK_IMAGE_FILE_NAME), TEST_LOCATION);
+ DALI_TEST_EQUALS(*testMap.Find(DevelImageVisual::Property::MASKING_TYPE), Property::Value(DevelImageVisual::MaskingType::MASKING_ON_RENDERING), TEST_LOCATION);
+
+ // For tesing the LoadResourceFunc is called, a big image size should be set, so the atlasing is not applied.
+ // Image with a size smaller than 512*512 will be uploaded as a part of the atlas.
+
+ TestGlAbstraction& gl = application.GetGlAbstraction();
+ TraceCallStack& textureTrace = gl.GetTextureTrace();
+ textureTrace.Enable(true);
+
+ DummyControl actor = DummyControl::New();
+ DummyControlImpl& dummyImpl = static_cast<DummyControlImpl&>(actor.GetImplementation());
+ dummyImpl.RegisterVisual(Control::CONTROL_PROPERTY_END_INDEX + 1, visual);
+
+ actor.SetProperty(Actor::Property::SIZE, Vector2(200.f, 200.f));
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 0u, TEST_LOCATION);
+ DALI_TEST_EQUALS(actor.IsResourceReady(), false, TEST_LOCATION);
+
+ application.GetScene().Add(actor);
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(Test::WaitForEventThreadTrigger(2), true, TEST_LOCATION);
+
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 1u, TEST_LOCATION);
+ Renderer renderer = actor.GetRendererAt(0u);
+ TextureSet textures = renderer.GetTextures();
+ DALI_TEST_CHECK(textures);
+ DALI_TEST_EQUALS(textures.GetTextureCount(), 2u, TEST_LOCATION);
+
+ DALI_TEST_EQUALS(textureTrace.FindMethod("BindTexture"), true, TEST_LOCATION);
+ DALI_TEST_EQUALS(actor.IsResourceReady(), true, TEST_LOCATION);
+
+ dummyImpl.UnregisterVisual(Control::CONTROL_PROPERTY_END_INDEX + 1);
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 0u, TEST_LOCATION);
+
+ END_TEST;
+}
+
+int UtcDaliImageVisualAlphaMask03(void)
+{
+ ToolkitTestApplication application;
+ tet_infoline("Request image visual with a Property::Map containing an Alpha mask for GPU with fail case");
+
+ VisualFactory factory = VisualFactory::Get();
+ DALI_TEST_CHECK(factory);
+
+ Property::Map propertyMap;
+ propertyMap.Insert(Toolkit::Visual::Property::TYPE, Visual::IMAGE);
+ propertyMap.Insert(ImageVisual::Property::URL, TEST_LARGE_IMAGE_FILE_NAME);
+ propertyMap.Insert(ImageVisual::Property::ALPHA_MASK_URL, "dummy_path");
+ propertyMap.Insert(DevelImageVisual::Property::MASKING_TYPE, DevelImageVisual::MaskingType::MASKING_ON_RENDERING);
+
+ Visual::Base visual = factory.CreateVisual(propertyMap);
+ DALI_TEST_CHECK(visual);
+
+ Property::Map testMap;
+ visual.CreatePropertyMap(testMap);
+
+ // For tesing the LoadResourceFunc is called, a big image size should be set, so the atlasing is not applied.
+ // Image with a size smaller than 512*512 will be uploaded as a part of the atlas.
+
+ TestGlAbstraction& gl = application.GetGlAbstraction();
+ TraceCallStack& textureTrace = gl.GetTextureTrace();
+ textureTrace.Enable(true);
+
+ DummyControl actor = DummyControl::New();
+ DummyControlImpl& dummyImpl = static_cast<DummyControlImpl&>(actor.GetImplementation());
+ dummyImpl.RegisterVisual(Control::CONTROL_PROPERTY_END_INDEX + 1, visual);
+
+ actor.SetProperty(Actor::Property::SIZE, Vector2(200.f, 200.f));
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 0u, TEST_LOCATION);
+ DALI_TEST_EQUALS(actor.IsResourceReady(), false, TEST_LOCATION);
+
+ application.GetScene().Add(actor);
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(Test::WaitForEventThreadTrigger(2), true, TEST_LOCATION);
+
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 1u, TEST_LOCATION);
+ Renderer renderer = actor.GetRendererAt(0u);
+ TextureSet textures = renderer.GetTextures();
+ DALI_TEST_CHECK(textures);
+ DALI_TEST_EQUALS(textures.GetTextureCount(), 1u, TEST_LOCATION);
+
+ DALI_TEST_EQUALS(textureTrace.FindMethod("BindTexture"), true, TEST_LOCATION);
+ DALI_TEST_EQUALS(actor.IsResourceReady(), true, TEST_LOCATION);
+
+ dummyImpl.UnregisterVisual(Control::CONTROL_PROPERTY_END_INDEX + 1);
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 0u, TEST_LOCATION);
+
+ END_TEST;
+}
+
+int UtcDaliImageVisualSynchronousLoadAlphaMask01(void)
{
ToolkitTestApplication application;
tet_infoline("Request image visual with a Property::Map containing an Alpha mask with synchronous loading");
END_TEST;
}
+int UtcDaliImageVisualSynchronousLoadAlphaMask02(void)
+{
+ ToolkitTestApplication application;
+ tet_infoline("Request image visual with a Property::Map containing an Alpha mask for GPU with synchronous loading");
+
+ VisualFactory factory = VisualFactory::Get();
+ DALI_TEST_CHECK(factory);
+
+ Property::Map propertyMap;
+ propertyMap.Insert(Toolkit::Visual::Property::TYPE, Visual::IMAGE);
+ propertyMap.Insert(ImageVisual::Property::URL, TEST_LARGE_IMAGE_FILE_NAME);
+ propertyMap.Insert(ImageVisual::Property::ALPHA_MASK_URL, TEST_MASK_IMAGE_FILE_NAME);
+ propertyMap.Insert(ImageVisual::Property::SYNCHRONOUS_LOADING, true);
+ propertyMap.Insert(DevelImageVisual::Property::MASKING_TYPE, DevelImageVisual::MaskingType::MASKING_ON_RENDERING);
+
+ Visual::Base visual = factory.CreateVisual(propertyMap);
+ DALI_TEST_CHECK(visual);
+
+ Property::Map testMap;
+ visual.CreatePropertyMap(testMap);
+ DALI_TEST_EQUALS(*testMap.Find(ImageVisual::Property::ALPHA_MASK_URL), Property::Value(TEST_MASK_IMAGE_FILE_NAME), TEST_LOCATION);
+
+ // For tesing the LoadResourceFunc is called, a big image size should be set, so the atlasing is not applied.
+ // Image with a size smaller than 512*512 will be uploaded as a part of the atlas.
+
+ TestGlAbstraction& gl = application.GetGlAbstraction();
+ TraceCallStack& textureTrace = gl.GetTextureTrace();
+ textureTrace.Enable(true);
+
+ DummyControl actor = DummyControl::New();
+ DummyControlImpl& dummyImpl = static_cast<DummyControlImpl&>(actor.GetImplementation());
+ dummyImpl.RegisterVisual(Control::CONTROL_PROPERTY_END_INDEX + 1, visual);
+
+ actor.SetProperty(Actor::Property::SIZE, Vector2(200.f, 200.f));
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 0u, TEST_LOCATION);
+ DALI_TEST_EQUALS(actor.IsResourceReady(), false, TEST_LOCATION);
+
+ application.GetScene().Add(actor);
+
+ // Do not wait for any EventThreadTrigger in synchronous alpha mask.
+
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 1u, TEST_LOCATION);
+ Renderer renderer = actor.GetRendererAt(0u);
+ TextureSet textures = renderer.GetTextures();
+ DALI_TEST_CHECK(textures);
+ DALI_TEST_EQUALS(textures.GetTextureCount(), 2u, TEST_LOCATION);
+
+ DALI_TEST_EQUALS(textureTrace.FindMethod("BindTexture"), true, TEST_LOCATION);
+ DALI_TEST_EQUALS(actor.IsResourceReady(), true, TEST_LOCATION);
+
+ dummyImpl.UnregisterVisual(Control::CONTROL_PROPERTY_END_INDEX + 1);
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 0u, TEST_LOCATION);
+
+ END_TEST;
+}
+
int UtcDaliImageVisualRemoteAlphaMask(void)
{
ToolkitTestApplication application;
END_TEST;
}
+int UtcDaliImageVisualReleasePolicy09(void)
+{
+ ToolkitTestApplication application;
+ tet_infoline("UtcDaliImageVisualReleasePolicy09 Destroyed Policy with N-Patch, Texture should be deleted when visual destroyed");
+
+ Property::Map propertyMapNPatchReleasePolicy;
+ propertyMapNPatchReleasePolicy.Insert(Visual::Property::TYPE, Visual::N_PATCH);
+ propertyMapNPatchReleasePolicy.Insert(ImageVisual::Property::URL, TEST_N_PATCH_IMAGE_FILE_NAME);
+ propertyMapNPatchReleasePolicy.Insert(DevelImageVisual::Property::AUXILIARY_IMAGE, TEST_MASK_IMAGE_FILE_NAME);
+ propertyMapNPatchReleasePolicy.Insert(DevelImageVisual::Property::AUXILIARY_IMAGE_ALPHA, 0.9f);
+ propertyMapNPatchReleasePolicy.Insert(ImageVisual::Property::RELEASE_POLICY, ImageVisual::ReleasePolicy::DESTROYED);
+
+ VisualFactory factory = VisualFactory::Get();
+ Visual::Base imageVisual = factory.CreateVisual(propertyMapNPatchReleasePolicy);
+ DALI_TEST_CHECK(imageVisual);
+
+ // Setup debug trace
+ TestGlAbstraction& gl = application.GetGlAbstraction();
+ TraceCallStack& textureTrace = gl.GetTextureTrace();
+ textureTrace.Enable(true);
+
+ tet_infoline("Register visual with control and ensure it has the only handle");
+ DummyControl actor = DummyControl::New(true);
+ Impl::DummyControl& dummyImpl = static_cast<Impl::DummyControl&>(actor.GetImplementation());
+ dummyImpl.RegisterVisual(DummyControl::Property::TEST_VISUAL, imageVisual);
+ imageVisual.Reset(); // reduce ref count so only the control keeps the visual alive.
+
+ actor.SetProperty(Actor::Property::SIZE, Vector2(200.f, 200.f));
+
+ application.SendNotification();
+ application.Render(0);
+ DALI_TEST_CHECK(actor.GetRendererCount() == 0u);
+ DALI_TEST_EQUALS(textureTrace.FindMethod("GenTextures"), false, TEST_LOCATION);
+
+ application.GetScene().Add(actor);
+
+ // Wait for image to load
+ DALI_TEST_EQUALS(Test::WaitForEventThreadTrigger(2), true, TEST_LOCATION);
+
+ application.SendNotification();
+ application.Render(0);
+ // Test renderer and texture created
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 1u, TEST_LOCATION);
+ DALI_TEST_EQUALS(textureTrace.FindMethod("GenTextures"), true, TEST_LOCATION);
+
+ DALI_TEST_CHECK(actor.GetRendererCount() == 1u);
+ tet_infoline("Destroy visual by UnRegistering visual with control, check renderer is destroyed");
+ dummyImpl.UnregisterVisual(DummyControl::Property::TEST_VISUAL);
+ DALI_TEST_CHECK(actor.GetRendererCount() == 0u);
+ application.SendNotification();
+ application.Render();
+
+ // Test texture removed after visual destroyed.
+ tet_infoline("Ensure texture is deleted after visual destroyed");
+ DALI_TEST_EQUALS(textureTrace.CountMethod("DeleteTextures"), 2, TEST_LOCATION);
+
+ END_TEST;
+}
+
int UtcDaliImageVisualLoadPolicy01(void)
{
ToolkitTestApplication application;
END_TEST;
}
+
+int UtcDaliImageVisualLoadImagePlanes01(void)
+{
+ EnvironmentVariable::SetTestEnvironmentVariable(LOAD_IMAGE_YUV_PLANES_ENV, "1");
+
+ ToolkitTestApplication application;
+
+ VisualFactory factory = VisualFactory::Get();
+ DALI_TEST_CHECK(factory);
+
+ Property::Map propertyMap;
+ propertyMap.Insert(Toolkit::Visual::Property::TYPE, Visual::IMAGE);
+ propertyMap.Insert(ImageVisual::Property::URL, TEST_YUV420_IMAGE_FILE_NAME);
+
+ Visual::Base visual = factory.CreateVisual(propertyMap);
+ DALI_TEST_CHECK(visual);
+
+ DummyControl actor = DummyControl::New();
+ DummyControlImpl& dummyImpl = static_cast<DummyControlImpl&>(actor.GetImplementation());
+ dummyImpl.RegisterVisual(Control::CONTROL_PROPERTY_END_INDEX + 1, visual);
+ actor.SetProperty(Actor::Property::SIZE, Vector2(200.f, 200.f));
+ application.GetScene().Add(actor);
+
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(Test::WaitForEventThreadTrigger(1), true, TEST_LOCATION);
+
+ TestGlAbstraction& gl = application.GetGlAbstraction();
+ TraceCallStack& textureTrace = gl.GetTextureTrace();
+ textureTrace.Enable(true);
+
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 1u, TEST_LOCATION);
+ DALI_TEST_EQUALS(actor.IsResourceReady(), true, TEST_LOCATION);
+ DALI_TEST_EQUALS(textureTrace.CountMethod("GenTextures"), 3, TEST_LOCATION);
+
+ Renderer renderer = actor.GetRendererAt(0);
+ auto preMultipliedAlpha = renderer.GetProperty<bool>(Renderer::Property::BLEND_PRE_MULTIPLIED_ALPHA);
+ DALI_TEST_EQUALS(preMultipliedAlpha, false, TEST_LOCATION);
+
+ END_TEST;
+}
+
+int UtcDaliImageVisualLoadImagePlanes02(void)
+{
+ EnvironmentVariable::SetTestEnvironmentVariable(LOAD_IMAGE_YUV_PLANES_ENV, "1");
+
+ ToolkitTestApplication application;
+
+ VisualFactory factory = VisualFactory::Get();
+ DALI_TEST_CHECK(factory);
+
+ // Alpha masking case - not support yuv planes
+ Property::Map propertyMap;
+ propertyMap.Insert(Toolkit::Visual::Property::TYPE, Visual::IMAGE);
+ propertyMap.Insert(ImageVisual::Property::URL, TEST_YUV420_IMAGE_FILE_NAME);
+ propertyMap.Insert(ImageVisual::Property::ALPHA_MASK_URL, TEST_MASK_IMAGE_FILE_NAME);
+
+ Visual::Base visual = factory.CreateVisual(propertyMap);
+ DALI_TEST_CHECK(visual);
+
+ DummyControl actor = DummyControl::New();
+ DummyControlImpl& dummyImpl = static_cast<DummyControlImpl&>(actor.GetImplementation());
+ dummyImpl.RegisterVisual(Control::CONTROL_PROPERTY_END_INDEX + 1, visual);
+ actor.SetProperty(Actor::Property::SIZE, Vector2(200.f, 200.f));
+ application.GetScene().Add(actor);
+
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(Test::WaitForEventThreadTrigger(3), true, TEST_LOCATION);
+
+ TestGlAbstraction& gl = application.GetGlAbstraction();
+ TraceCallStack& textureTrace = gl.GetTextureTrace();
+ textureTrace.Enable(true);
+
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 1u, TEST_LOCATION);
+ DALI_TEST_EQUALS(actor.IsResourceReady(), true, TEST_LOCATION);
+ DALI_TEST_EQUALS(textureTrace.CountMethod("GenTextures"), 1, TEST_LOCATION);
+
+ END_TEST;
+}
+
+int UtcDaliImageVisualLoadImagePlanes03(void)
+{
+ EnvironmentVariable::SetTestEnvironmentVariable(LOAD_IMAGE_YUV_PLANES_ENV, "1");
+
+ ToolkitTestApplication application;
+
+ VisualFactory factory = VisualFactory::Get();
+ DALI_TEST_CHECK(factory);
+
+ TestGlAbstraction& gl = application.GetGlAbstraction();
+ TraceCallStack& textureTrace = gl.GetTextureTrace();
+ textureTrace.Enable(true);
+
+ Property::Map propertyMap;
+ propertyMap.Insert(Toolkit::Visual::Property::TYPE, Visual::IMAGE);
+ propertyMap.Insert(ImageVisual::Property::URL, TEST_YUV420_IMAGE_FILE_NAME);
+ propertyMap.Insert(ImageVisual::Property::SYNCHRONOUS_LOADING, true);
+
+ Visual::Base visual = factory.CreateVisual(propertyMap);
+ DALI_TEST_CHECK(visual);
+
+ DummyControl actor = DummyControl::New();
+ DummyControlImpl& dummyImpl = static_cast<DummyControlImpl&>(actor.GetImplementation());
+ dummyImpl.RegisterVisual(Control::CONTROL_PROPERTY_END_INDEX + 1, visual);
+ actor.SetProperty(Actor::Property::SIZE, Vector2(200.f, 200.f));
+ application.GetScene().Add(actor);
+
+ application.SendNotification();
+ application.Render();
+
+ DALI_TEST_EQUALS(actor.GetRendererCount(), 1u, TEST_LOCATION);
+ DALI_TEST_EQUALS(actor.IsResourceReady(), true, TEST_LOCATION);
+ DALI_TEST_EQUALS(textureTrace.CountMethod("GenTextures"), 3, TEST_LOCATION);
+
+ END_TEST;
+}
projects / platform / core / uifw / dali-toolkit.git / blobdiff