| /* |
| * 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. |
| */ |
| |
| #ifndef CustomFilterProgram_h |
| #define CustomFilterProgram_h |
| |
| #include "platform/graphics/filters/custom/CustomFilterProgramInfo.h" |
| |
| #include "wtf/HashCountedSet.h" |
| #include "wtf/RefCounted.h" |
| #include "wtf/text/WTFString.h" |
| |
| namespace WebCore { |
| |
| class GraphicsContext3D; |
| class CustomFilterCompiledProgram; |
| class CustomFilterProgramClient; |
| |
| // This is the base class for the StyleCustomFilterProgram class which knows how to keep |
| // references to the cached shaders. |
| class CustomFilterProgram: public RefCounted<CustomFilterProgram> { |
| public: |
| virtual ~CustomFilterProgram(); |
| |
| virtual bool isLoaded() const = 0; |
| |
| void addClient(CustomFilterProgramClient*); |
| void removeClient(CustomFilterProgramClient*); |
| |
| CustomFilterProgramInfo programInfo() const; |
| |
| virtual String vertexShaderString() const = 0; |
| virtual String fragmentShaderString() const = 0; |
| CustomFilterProgramType programType() const { return m_programType; } |
| CustomFilterProgramMixSettings mixSettings() const { return m_mixSettings; } |
| CustomFilterMeshType meshType() const { return m_meshType; } |
| |
| protected: |
| // StyleCustomFilterProgram can notify the clients that the cached resources are |
| // loaded and it is ready to create CustomFilterCompiledProgram objects. |
| void notifyClients(); |
| |
| virtual void willHaveClients() = 0; |
| virtual void didRemoveLastClient() = 0; |
| |
| // Keep the constructor protected to prevent creating this object directly. |
| CustomFilterProgram(CustomFilterProgramType, const CustomFilterProgramMixSettings&, CustomFilterMeshType); |
| |
| private: |
| // CustomFilterPrograms are unique combinations of shaders and can be |
| // compared using just the pointer value instead. |
| // These will catch anyone doing a value equal comparison. |
| bool operator==(const CustomFilterProgram&) const; |
| bool operator!=(const CustomFilterProgram&) const; |
| |
| typedef HashCountedSet<CustomFilterProgramClient*> CustomFilterProgramClientList; |
| CustomFilterProgramClientList m_clients; |
| CustomFilterProgramType m_programType; |
| CustomFilterProgramMixSettings m_mixSettings; |
| CustomFilterMeshType m_meshType; |
| }; |
| |
| } |
| |
| |
| #endif |