void ShadowView::SetShaderConstants()
{
CustomActor self = Self();
mShadowRenderShader.SetUniform( SHADER_LIGHT_CAMERA_PROJECTION_MATRIX_PROPERTY_NAME, Matrix::IDENTITY );
mShadowRenderShader.SetUniform( SHADER_LIGHT_CAMERA_VIEW_MATRIX_PROPERTY_NAME, Matrix::IDENTITY );
mShadowRenderShader.SetUniform( SHADER_SHADOW_COLOR_PROPERTY_NAME, mCachedShadowColor );
Property::Index lightCameraProjectionMatrixPropertyIndex = mShadowRenderShader.GetPropertyIndex(SHADER_LIGHT_CAMERA_PROJECTION_MATRIX_PROPERTY_NAME);
Property::Index lightCameraViewMatrixPropertyIndex = mShadowRenderShader.GetPropertyIndex(SHADER_LIGHT_CAMERA_VIEW_MATRIX_PROPERTY_NAME);
Constraint projectionMatrixConstraint = Constraint::New<Dali::Matrix>( lightCameraProjectionMatrixPropertyIndex, Source( mCameraActor, CameraActor::PROJECTION_MATRIX ), EqualToConstraintMatrix());
Constraint viewMatrixConstraint = Constraint::New<Dali::Matrix>( lightCameraViewMatrixPropertyIndex, Source( mCameraActor, CameraActor::VIEW_MATRIX ), EqualToConstraintMatrix());
mShadowRenderShader.ApplyConstraint(projectionMatrixConstraint);
mShadowRenderShader.ApplyConstraint(viewMatrixConstraint);
// Register a property that the user can use to control the blur in the internal object
mBlurStrengthPropertyIndex = self.RegisterProperty(BLUR_STRENGTH_PROPERTY_NAME, BLUR_STRENGTH_DEFAULT);
mBlurFilter.GetHandleForAnimateBlurStrength().ApplyConstraint( Constraint::New<float>( mBlurFilter.GetBlurStrengthPropertyIndex() ,
Source( self, mBlurStrengthPropertyIndex),
EqualToConstraint()) );
// Register a property that the user can use to control the color of the shadow.
Property::Index index = mShadowRenderShader.GetPropertyIndex(SHADER_SHADOW_COLOR_PROPERTY_NAME);
mShadowColorPropertyIndex = self.RegisterProperty(SHADOW_COLOR_PROPERTY_NAME, mCachedShadowColor);
mShadowRenderShader.ApplyConstraint(Constraint::New<Dali::Vector4>( index, Source( self, mShadowColorPropertyIndex ), EqualToConstraint()) );
}
void ShadowView::OnInitialize()
{
// root actor to parent all user added actors. Used as source actor for shadow render task.
mChildrenRoot.SetPositionInheritanceMode( Dali::USE_PARENT_POSITION );
mChildrenRoot.SetResizePolicy( ResizePolicy::FILL_TO_PARENT, Dimension::ALL_DIMENSIONS );
Vector2 stageSize = Stage::GetCurrent().GetSize();
mCameraActor = CameraActor::New(stageSize);
mCameraActor.SetParentOrigin( ParentOrigin::CENTER );
// Target is constrained to point at the shadow plane origin
mCameraActor.SetNearClippingPlane( 1.0f );
mCameraActor.SetType( Dali::Camera::FREE_LOOK ); // Camera orientation constrained to point at shadow plane world position
mCameraActor.SetOrientation(Radian(Degree(180)), Vector3::YAXIS);
mCameraActor.SetPosition(DEFAULT_LIGHT_POSITION);
Property::Map customShader;
customShader[ "vertex-shader" ] = RENDER_SHADOW_VERTEX_SOURCE;
customShader[ "fragment-shader" ] = RENDER_SHADOW_FRAGMENT_SOURCE;
customShader[ "subdivide-grid-x" ] = 20;
customShader[ "subdivide-grid-y" ] = 20;
customShader[ "hints" ] = "output-is-transparent";
mShadowRenderShader[ "shader" ] = customShader;
// Create render targets needed for rendering from light's point of view
mSceneFromLightRenderTarget = FrameBufferImage::New( stageSize.width, stageSize.height, Pixel::RGBA8888 );
mOutputImage = FrameBufferImage::New( stageSize.width * 0.5f, stageSize.height * 0.5f, Pixel::RGBA8888 );
//////////////////////////////////////////////////////
// Connect to actor tree
Self().Add( mChildrenRoot );
Stage::GetCurrent().Add( mCameraActor );
mBlurFilter.SetRefreshOnDemand(false);
mBlurFilter.SetInputImage(mSceneFromLightRenderTarget);
mBlurFilter.SetOutputImage(mOutputImage);
mBlurFilter.SetSize(stageSize * 0.5f);
mBlurFilter.SetPixelFormat(Pixel::RGBA8888);
mBlurRootActor = Actor::New();
mBlurRootActor.SetName( "BLUR_ROOT_ACTOR" );
// Turn off inheritance to ensure filter renders properly
mBlurRootActor.SetPositionInheritanceMode(USE_PARENT_POSITION);
mBlurRootActor.SetInheritOrientation(false);
mBlurRootActor.SetInheritScale(false);
mBlurRootActor.SetColorMode(USE_OWN_COLOR);
Self().Add(mBlurRootActor);
mBlurFilter.SetRootActor(mBlurRootActor);
mBlurFilter.SetBackgroundColor(Vector4::ZERO);
CustomActor self = Self();
// Register a property that the user can use to control the blur in the internal object
mBlurStrengthPropertyIndex = self.RegisterProperty(BLUR_STRENGTH_PROPERTY_NAME, BLUR_STRENGTH_DEFAULT);
Constraint blurStrengthConstraint = Constraint::New<float>( mBlurFilter.GetHandleForAnimateBlurStrength(), mBlurFilter.GetBlurStrengthPropertyIndex(), EqualToConstraint() );
blurStrengthConstraint.AddSource( Source( self, mBlurStrengthPropertyIndex) );
blurStrengthConstraint.Apply();
}