#include <dali-toolkit/dali-toolkit.h>
#include <dali/devel-api/scripting/scripting.h>
+#include <dali/devel-api/rendering/material.h>
+#include <dali/devel-api/rendering/renderer.h>
using namespace Dali;
using namespace Toolkit;
END_TEST;
}
+
+int UtcDaliImageViewSetGetProperty03(void)
+{
+ ToolkitTestApplication application;
+
+ Image image = CreateBufferImage( 10, 10, Color::WHITE );
+ ImageView imageView = ImageView::New(image);
+ Stage::GetCurrent().Add( imageView );
+ application.SendNotification();
+ application.Render();
+
+ // conventional alpha blending
+ Material material = imageView.GetRendererAt( 0 ).GetMaterial();
+ BlendingFactor::Type srcFactorRgb;
+ BlendingFactor::Type destFactorRgb;
+ BlendingFactor::Type srcFactorAlpha;
+ BlendingFactor::Type destFactorAlpha;
+ material.GetBlendFunc(srcFactorRgb, destFactorRgb, srcFactorAlpha, destFactorAlpha);
+ DALI_TEST_CHECK( srcFactorRgb == BlendingFactor::SRC_ALPHA );
+ DALI_TEST_CHECK( destFactorRgb == BlendingFactor::ONE_MINUS_SRC_ALPHA );
+ DALI_TEST_CHECK( srcFactorAlpha == BlendingFactor::ONE );
+ DALI_TEST_CHECK( destFactorAlpha == BlendingFactor::ONE_MINUS_SRC_ALPHA );
+
+ TestGlAbstraction& gl = application.GetGlAbstraction();
+
+ float alphaBlendingUniform;
+ DALI_TEST_CHECK( gl.GetUniformValue<float>( "uAlphaBlending", alphaBlendingUniform ) );
+ DALI_TEST_EQUALS( alphaBlendingUniform, 1.f, TEST_LOCATION );
+
+ // pre-multiplied alpha blending
+ imageView.SetProperty( Toolkit::ImageView::Property::PRE_MULTIPLIED_ALPHA, true );
+ application.SendNotification();
+ application.Render();
+
+ material.GetBlendFunc(srcFactorRgb, destFactorRgb, srcFactorAlpha, destFactorAlpha);
+ DALI_TEST_CHECK( srcFactorRgb == BlendingFactor::ONE );
+ DALI_TEST_CHECK( destFactorRgb == BlendingFactor::ONE_MINUS_SRC_ALPHA );
+ DALI_TEST_CHECK( srcFactorAlpha == BlendingFactor::ONE );
+ DALI_TEST_CHECK( destFactorAlpha == BlendingFactor::ONE );
+
+ DALI_TEST_CHECK( gl.GetUniformValue<float>( "uAlphaBlending", alphaBlendingUniform ) );
+ DALI_TEST_EQUALS( alphaBlendingUniform, 0.f, TEST_LOCATION );
+
+ END_TEST;
+}
+
int UtcDaliImageViewSizeWithBackground(void)
{
ToolkitTestApplication application;
DALI_TYPE_REGISTRATION_BEGIN( Toolkit::ImageView, Toolkit::Control, Create );
DALI_PROPERTY_REGISTRATION( Toolkit, ImageView, "resourceUrl", STRING, RESOURCE_URL )
DALI_PROPERTY_REGISTRATION( Toolkit, ImageView, "image", MAP, IMAGE )
+DALI_PROPERTY_REGISTRATION( Toolkit, ImageView, "preMultipliedAlpha", BOOLEAN, PRE_MULTIPLIED_ALPHA )
DALI_ANIMATABLE_PROPERTY_REGISTRATION_WITH_DEFAULT( Toolkit, ImageView, "pixelArea", Vector4(0.f, 0.f, 1.f, 1.f), PIXEL_AREA )
DALI_TYPE_REGISTRATION_END()
using namespace Dali;
ImageView::ImageView()
-: Control( ControlBehaviour( ACTOR_BEHAVIOUR_NONE ) )
+: Control( ControlBehaviour( ACTOR_BEHAVIOUR_NONE ) ),
+ mPremultipledAlphaEnabled( false )
{
}
}
}
+void ImageView::EnablePreMultipliedAlpha( bool preMultipled )
+{
+ mPremultipledAlphaEnabled = preMultipled;
+
+ if( mRenderer )
+ {
+ ControlRenderer& rendererImpl = GetImplementation( mRenderer );
+ if (&typeid( rendererImpl ) == &typeid(ImageRenderer) )
+ {
+ ImageRenderer* imageRenderer = static_cast<ImageRenderer*>( &rendererImpl );
+ imageRenderer->EnablePreMultipliedAlpha( preMultipled );
+ }
+ }
+}
+
+bool ImageView::IsPreMultipliedAlphaEnabled() const
+{
+ return mPremultipledAlphaEnabled;
+}
+
void ImageView::SetDepthIndex( int depthIndex )
{
if( mRenderer )
break;
}
+
+ case Toolkit::ImageView::Property::PRE_MULTIPLIED_ALPHA:
+ {
+ bool IsPre;
+ if( value.Get( IsPre ) )
+ {
+ GetImpl(imageView).EnablePreMultipliedAlpha( IsPre );
+ }
+ break;
+ }
}
}
}
}
break;
}
+
+ case Toolkit::ImageView::Property::PRE_MULTIPLIED_ALPHA:
+ {
+ value = impl.IsPreMultipliedAlphaEnabled();
+ break;
+ }
}
}
*/
void SetImage( const std::string& imageUrl, ImageDimensions size );
+ /**
+ * @brief Set whether the Pre-multiplied Alpha Blending is required
+ *
+ * @param[in] preMultipled whether alpha is pre-multiplied.
+ */
+ void EnablePreMultipliedAlpha( bool preMultipled );
+
+ /**
+ * @brief Query whether alpha is pre-multiplied.
+ *
+ * @return True is alpha is pre-multiplied, false otherwise.
+ */
+ bool IsPreMultipliedAlphaEnabled() const;
+
// Properties
/**
* Called when a property of an object of this type is set.
std::string mUrl; ///< the url for the image if the image came from a URL, empty otherwise
Image mImage; ///< the Image if the image came from a Image, null otherwise
Property::Map mPropertyMap; ///< the Property::Map if the image came from a Property::Map, empty otherwise
+
+ bool mPremultipledAlphaEnabled; ///< Flag indicating whether the Pre-multiplied Alpha Blending is required
};
} // namespace Internal
const std::string TEXTURE_UNIFORM_NAME = "sTexture";
const std::string ATLAS_RECT_UNIFORM_NAME = "uAtlasRect";
const std::string PIXEL_AREA_UNIFORM_NAME = "pixelArea";
+
+// Set this uniform to 1.0 for conventional alpha blending; if pre-multiplied alpha blending, set this uniform to 0.0
+const std::string ALPHA_BLENDING_UNIFORM_NAME = "uAlphaBlending";
+
const Vector4 FULL_TEXTURE_RECT(0.f, 0.f, 1.f, 1.f);
const char* VERTEX_SHADER = DALI_COMPOSE_SHADER(
varying mediump vec2 vTexCoord;\n
uniform sampler2D sTexture;\n
uniform lowp vec4 uColor;\n
+ uniform lowp float uAlphaBlending; // Set to 1.0 for conventional alpha blending; if pre-multiplied alpha blending, set to 0.0
\n
void main()\n
{\n
- gl_FragColor = texture2D( sTexture, vTexCoord ) * uColor;\n
+ gl_FragColor = texture2D( sTexture, vTexCoord ) * vec4( uColor.rgb*max( uAlphaBlending, uColor.a ), uColor.a );\n
}\n
);
mAtlasManager( atlasManager ),
mDesiredSize(),
mFittingMode( FittingMode::DEFAULT ),
- mSamplingMode( SamplingMode::DEFAULT )
+ mSamplingMode( SamplingMode::DEFAULT ),
+ mIsAlphaPreMultiplied( false )
{
}
{
shader.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, FULL_TEXTURE_RECT );
shader.RegisterProperty( PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT );
+ shader.RegisterProperty( ALPHA_BLENDING_UNIFORM_NAME, 1.f );
}
}
}
{
InitializeRenderer( mImage );
}
+
+ EnablePreMultipliedAlpha( mIsAlphaPreMultiplied );
}
void ImageRenderer::DoSetOffStage( Actor& actor )
factoryCache.SaveShader( RendererFactoryCache::IMAGE_SHADER, shader );
shader.RegisterProperty( ATLAS_RECT_UNIFORM_NAME, FULL_TEXTURE_RECT );
shader.RegisterProperty( PIXEL_AREA_UNIFORM_NAME, FULL_TEXTURE_RECT );
+ shader.RegisterProperty( ALPHA_BLENDING_UNIFORM_NAME, 1.f );
}
return shader;
}
}
}
+void ImageRenderer::EnablePreMultipliedAlpha( bool preMultipled )
+{
+ mIsAlphaPreMultiplied = preMultipled;
+ if( mImpl->mRenderer )
+ {
+ Material material = mImpl->mRenderer.GetMaterial();
+
+ if( preMultipled )
+ {
+ material.SetBlendFunc( BlendingFactor::ONE, BlendingFactor::ONE_MINUS_SRC_ALPHA,
+ BlendingFactor::ONE, BlendingFactor::ONE );
+ if( !mImpl->mCustomShader || mImpl->mCustomShader->mVertexShader.empty())
+ {
+ material.RegisterProperty( ALPHA_BLENDING_UNIFORM_NAME, 0.f );
+ }
+ }
+ else
+ {
+ // using default blend func
+ material.SetBlendFunc( BlendingFactor::SRC_ALPHA, BlendingFactor::ONE_MINUS_SRC_ALPHA,
+ BlendingFactor::ONE, BlendingFactor::ONE_MINUS_SRC_ALPHA );
+
+ Property::Index index = material.GetPropertyIndex( ALPHA_BLENDING_UNIFORM_NAME );
+ if( index != Property::INVALID_INDEX ) // only set value when the property already exist on the Material
+ {
+ material.SetProperty( index, 1.f );
+ }
+ }
+ }
+}
+
void ImageRenderer::ApplyImageToSampler( const Image& image )
{
if( image )
*/
void SetImage( Actor& actor, const Image& image );
+ /**
+ * @brief Set whether the Pre-multiplied Alpha Blending is required
+ *
+ * @param[in] preMultipled whether alpha is pre-multiplied.
+ */
+ void EnablePreMultipliedAlpha( bool preMultipled );
+
private:
/**
Dali::ImageDimensions mDesiredSize;
Dali::FittingMode::Type mFittingMode;
Dali::SamplingMode::Type mSamplingMode;
+ bool mIsAlphaPreMultiplied;
+
};
} // namespace Internal
// Event side properties
RESOURCE_URL = PROPERTY_START_INDEX, ///< name "resourceUrl", @deprecated DALi 1.1.16 Use IMAGE instead. type string
IMAGE, ///< name "image", @see SetImage(), type string if it is a url, map otherwise
+ PRE_MULTIPLIED_ALPHA, ///< name "preMultipliedAlpha", @since DALi 1.1.18 type Boolean @pre image must be initialized.
// Animatable properties
PIXEL_AREA = ANIMATABLE_PROPERTY_START_INDEX, ///< name "pixelArea", @since DALi 1.1.18 type Vector4, Pixel area is a relative value with the whole image area as [0.0, 0.0, 1.0, 1.0].