/* * Copyright (C) 2015-2017 Apple Inc. 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 APPLE INC. ``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 APPLE INC. OR * CONTRIBUTORS 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. */ #pragma once #if ENABLE(WEBGL2) #include "WebGL2RenderingContext.h" #include "WebGLSharedObject.h" namespace WebCore { class WebGLTransformFeedback final : public WebGLSharedObject { public: virtual ~WebGLTransformFeedback(); static Ref<WebGLTransformFeedback> create(WebGL2RenderingContext&); bool isActive() const { return m_active; } bool isPaused() const { return m_paused; } void setActive(bool active) { m_active = active; } void setPaused(bool paused) { m_paused = paused; } // These are the indexed bind points for transform feedback buffers. // Returns false if index is out of range and the caller should // synthesize a GL error. void setBoundIndexedTransformFeedbackBuffer(GCGLuint index, WebGLBuffer*); bool getBoundIndexedTransformFeedbackBuffer(GCGLuint index, WebGLBuffer** outBuffer); bool validateProgramForResume(WebGLProgram*) const; bool hasEverBeenBound() const { return object() && m_hasEverBeenBound; } void setHasEverBeenBound() { m_hasEverBeenBound = true; } WebGLProgram* program() const { return m_program.get(); } void setProgram(WebGLProgram&); void unbindBuffer(WebGLBuffer&); bool hasEnoughBuffers(GCGLuint numRequired) const; private: WebGLTransformFeedback(WebGL2RenderingContext&); void deleteObjectImpl(GraphicsContextGLOpenGL*, PlatformGLObject) override; bool m_active { false }; bool m_paused { false }; bool m_hasEverBeenBound { false }; unsigned m_programLinkCount { 0 }; Vector<RefPtr<WebGLBuffer>> m_boundIndexedTransformFeedbackBuffers; RefPtr<WebGLProgram> m_program; }; } // namespace WebCore #endif