/* * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above * copyright notice, this list of conditions and the following * disclaimer. * 2. Redistributions in binary form must reproduce the above * copyright notice, this list of conditions and the following * disclaimer in the documentation and/or other materials * provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include "config.h" #if ENABLE(CSS_SHADERS) #include "CustomFilterOperation.h" #include "CustomFilterParameter.h" #include "CustomFilterProgram.h" #include "FilterOperation.h" namespace WebCore { CustomFilterOperation::CustomFilterOperation(PassRefPtr<CustomFilterProgram> program, const CustomFilterParameterList& sortedParameters, unsigned meshRows, unsigned meshColumns) : FilterOperation(CUSTOM) , m_program(program) , m_parameters(sortedParameters) , m_meshRows(meshRows) , m_meshColumns(meshColumns) { // Make sure that the parameters are alwyas sorted by name. We use that to merge two CustomFilterOperations in animations. ASSERT(m_parameters.checkAlphabeticalOrder()); } CustomFilterOperation::~CustomFilterOperation() { } PassRefPtr<FilterOperation> CustomFilterOperation::blend(const FilterOperation* from, double progress, const LayoutSize& size, bool blendToPassthrough) { // FIXME: There's no way to decide what is the "passthrough filter" for shaders using the current CSS Syntax. // https://bugs.webkit.org/show_bug.cgi?id=84903 // https://www.w3.org/Bugs/Public/show_bug.cgi?id=16861 if (blendToPassthrough || !from || !from->isSameType(*this)) return this; const CustomFilterOperation* fromOp = static_cast<const CustomFilterOperation*>(from); if (m_program.get() != fromOp->m_program.get() || m_meshRows != fromOp->m_meshRows || m_meshColumns != fromOp->m_meshColumns) return this; CustomFilterParameterList animatedParameters; m_parameters.blend(fromOp->m_parameters, progress, size, animatedParameters); return CustomFilterOperation::create(m_program, animatedParameters, m_meshRows, m_meshColumns); } } // namespace WebCore #endif // ENABLE(CSS_SHADERS)