| /**************************************************************************** |
| ** |
| ** Copyright (C) 2008-2012 NVIDIA Corporation. |
| ** Copyright (C) 2019 The Qt Company Ltd. |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of Qt Quick 3D. |
| ** |
| ** $QT_BEGIN_LICENSE:GPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 3 or (at your option) any later version |
| ** approved by the KDE Free Qt Foundation. The licenses are as published by |
| ** the Free Software Foundation and appearing in the file LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qssgrenderresourcetexture2d_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| QSSGResourceTexture2D::QSSGResourceTexture2D(const QSSGRef<QSSGResourceManager> &mgr, |
| const QSSGRef<QSSGRenderTexture2D> &inTexture) |
| : m_resourceManager(mgr), m_texture(inTexture) |
| { |
| if (inTexture) |
| m_textureDetails = inTexture->textureDetails(); |
| } |
| |
| QSSGResourceTexture2D::QSSGResourceTexture2D(const QSSGRef<QSSGResourceManager> &mgr, |
| quint32 width, |
| quint32 height, |
| QSSGRenderTextureFormat inFormat, |
| quint32 inSamples) |
| : m_resourceManager(mgr) |
| { |
| ensureTexture(width, height, inFormat, inSamples); |
| } |
| |
| QSSGResourceTexture2D::~QSSGResourceTexture2D() |
| { |
| releaseTexture(); |
| } |
| |
| // Returns true if the texture was allocated, false if nothing changed (no allocation). |
| bool QSSGResourceTexture2D::textureMatches(qint32 width, qint32 height, QSSGRenderTextureFormat inFormat, qint32 inSamples) |
| { |
| Q_ASSERT(width >= 0 && height >= 0 && inSamples >= 0); |
| return m_texture && m_textureDetails.width == width && m_textureDetails.height == height |
| && m_textureDetails.format == inFormat && m_textureDetails.sampleCount == inSamples; |
| } |
| |
| bool QSSGResourceTexture2D::ensureTexture(qint32 width, qint32 height, QSSGRenderTextureFormat inFormat, qint32 inSamples) |
| { |
| Q_ASSERT(width >= 0 && height >= 0 && inSamples >= 0); |
| if (textureMatches(width, height, inFormat, inSamples)) |
| return false; |
| |
| if (m_texture && inSamples > 1) { |
| // we cannot resize MSAA textures though release first |
| releaseTexture(); |
| } |
| |
| if (!m_texture) |
| m_texture = m_resourceManager->allocateTexture2D(width, height, inFormat, inSamples); |
| else { |
| // multisampled textures are immuteable |
| Q_ASSERT(inSamples == 1); |
| m_texture->setTextureData(QSSGByteView(), 0, width, height, inFormat); |
| } |
| |
| m_textureDetails = m_texture->textureDetails(); |
| return true; |
| } |
| |
| void QSSGResourceTexture2D::releaseTexture() |
| { |
| if (m_texture) { |
| m_resourceManager->release(m_texture); |
| forgetTexture(); |
| } |
| } |
| |
| void QSSGResourceTexture2D::forgetTexture() |
| { |
| m_texture = nullptr; |
| } |
| |
| void QSSGResourceTexture2D::stealTexture(QSSGResourceTexture2D &inOther) |
| { |
| releaseTexture(); |
| m_texture = inOther.m_texture; |
| m_textureDetails = inOther.m_textureDetails; |
| inOther.m_texture = nullptr; |
| } |
| |
| void QSSGResourceTexture2D::swapTexture(QSSGResourceTexture2D &inOther) |
| { |
| QSSGRef<QSSGRenderTexture2D> temp = inOther.m_texture; |
| QSSGTextureDetails detailsTemp = inOther.m_textureDetails; |
| inOther.m_texture = m_texture; |
| inOther.m_textureDetails = m_textureDetails; |
| m_texture = temp; |
| m_textureDetails = detailsTemp; |
| } |
| |
| QT_END_NAMESPACE |