| /* |
| * Copyright (C) 2015-2021 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. |
| */ |
| |
| #include "config.h" |
| |
| #if ENABLE(WEBGL2) |
| #include "WebGLTransformFeedback.h" |
| |
| #include "WebGL2RenderingContext.h" |
| #include "WebGLContextGroup.h" |
| #include <JavaScriptCore/AbstractSlotVisitorInlines.h> |
| #include <wtf/Lock.h> |
| #include <wtf/Locker.h> |
| |
| namespace WebCore { |
| |
| Ref<WebGLTransformFeedback> WebGLTransformFeedback::create(WebGL2RenderingContext& ctx) |
| { |
| return adoptRef(*new WebGLTransformFeedback(ctx)); |
| } |
| |
| WebGLTransformFeedback::~WebGLTransformFeedback() |
| { |
| if (!hasGroupOrContext()) |
| return; |
| |
| runDestructor(); |
| } |
| |
| WebGLTransformFeedback::WebGLTransformFeedback(WebGL2RenderingContext& ctx) |
| : WebGLSharedObject(ctx) |
| { |
| setObject(ctx.graphicsContextGL()->createTransformFeedback()); |
| m_boundIndexedTransformFeedbackBuffers.resize(ctx.maxTransformFeedbackSeparateAttribs()); |
| } |
| |
| void WebGLTransformFeedback::deleteObjectImpl(const AbstractLocker&, GraphicsContextGL* context3d, PlatformGLObject object) |
| { |
| context3d->deleteTransformFeedback(object); |
| } |
| |
| void WebGLTransformFeedback::setProgram(const AbstractLocker&, WebGLProgram& program) |
| { |
| m_program = &program; |
| m_programLinkCount = program.getLinkCount(); |
| } |
| |
| void WebGLTransformFeedback::setBoundIndexedTransformFeedbackBuffer(const AbstractLocker&, GCGLuint index, WebGLBuffer* buffer) |
| { |
| ASSERT(index < m_boundIndexedTransformFeedbackBuffers.size()); |
| m_boundIndexedTransformFeedbackBuffers[index] = buffer; |
| } |
| |
| bool WebGLTransformFeedback::getBoundIndexedTransformFeedbackBuffer(GCGLuint index, WebGLBuffer** outBuffer) |
| { |
| if (index >= m_boundIndexedTransformFeedbackBuffers.size()) |
| return false; |
| *outBuffer = m_boundIndexedTransformFeedbackBuffers[index].get(); |
| return true; |
| } |
| |
| bool WebGLTransformFeedback::hasEnoughBuffers(GCGLuint numRequired) const |
| { |
| if (numRequired > m_boundIndexedTransformFeedbackBuffers.size()) |
| return false; |
| for (GCGLuint i = 0; i < numRequired; i++) { |
| if (!m_boundIndexedTransformFeedbackBuffers[i].get()) |
| return false; |
| } |
| return true; |
| } |
| |
| void WebGLTransformFeedback::addMembersToOpaqueRoots(const AbstractLocker& locker, JSC::AbstractSlotVisitor& visitor) |
| { |
| for (auto& buffer : m_boundIndexedTransformFeedbackBuffers) |
| visitor.addOpaqueRoot(buffer.get()); |
| |
| visitor.addOpaqueRoot(m_program.get()); |
| if (m_program) |
| m_program->addMembersToOpaqueRoots(locker, visitor); |
| } |
| |
| void WebGLTransformFeedback::unbindBuffer(const AbstractLocker&, WebGLBuffer& buffer) |
| { |
| for (auto& boundBuffer : m_boundIndexedTransformFeedbackBuffers) { |
| if (boundBuffer == &buffer) |
| boundBuffer = nullptr; |
| } |
| } |
| |
| bool WebGLTransformFeedback::validateProgramForResume(WebGLProgram* program) const |
| { |
| return program && m_program == program && program->getLinkCount() == m_programLinkCount; |
| } |
| |
| } |
| |
| #endif // ENABLE(WEBGL2) |