File indexing completed on 2024-12-22 04:12:47 

0001 /*
0002  *  SPDX-FileCopyrightText: 2021 Dmitry Kazakov <dimula73@gmail.com>
0003  *
0004  *  SPDX-License-Identifier: GPL-2.0-or-later
0005  */
0006 
0007 
0008 #include "KisOpenGLBufferCreationGuard.h"
0009 
0010 #include "kis_opengl.h"
0011 
0012 
0013 KisOpenGLBufferCreationGuard::KisOpenGLBufferCreationGuard(QOpenGLBuffer *buffer, int size, QOpenGLBuffer::UsagePattern usagePattern)
0014 {
0015     m_buffer = buffer;
0016 
0017     m_buffer->create();
0018     m_buffer->setUsagePattern(usagePattern);
0019     m_buffer->bind();
0020     m_buffer->allocate(size);
0021 
0022     if (KisOpenGL::supportsBufferMapping()) {
0023         m_bufferPtr = reinterpret_cast<quint8*>(m_buffer->map(QOpenGLBuffer::WriteOnly));
0024         m_bufferIsMapped = true;
0025     }
0026 
0027     if (!m_bufferPtr) {
0028         m_bufferPtr = new quint8[size];
0029     }
0030 }
0031 
0032 KisOpenGLBufferCreationGuard::~KisOpenGLBufferCreationGuard()
0033 {
0034     if (m_bufferIsMapped) {
0035         m_buffer->unmap();
0036     } else {
0037         m_buffer->write(0, m_bufferPtr, m_buffer->size());
0038         delete[] m_bufferPtr;
0039     }
0040     m_buffer->release();
0041 }