diff options
Diffstat (limited to 'src/plugins/scenegraph/d3d12/qsgd3d12texture.cpp')
-rw-r--r-- | src/plugins/scenegraph/d3d12/qsgd3d12texture.cpp | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/src/plugins/scenegraph/d3d12/qsgd3d12texture.cpp b/src/plugins/scenegraph/d3d12/qsgd3d12texture.cpp new file mode 100644 index 0000000000..a5f3eb7a31 --- /dev/null +++ b/src/plugins/scenegraph/d3d12/qsgd3d12texture.cpp @@ -0,0 +1,145 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtQuick module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or 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.GPL2 and 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-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "qsgd3d12texture_p.h" +#include "qsgd3d12engine_p.h" +#include <private/qsgcontext_p.h> + +QT_BEGIN_NAMESPACE + +#define RETAIN_IMAGE + +void QSGD3D12Texture::create(const QImage &image, uint flags) +{ + // ### atlas? + + const bool alphaRequest = flags & QSGRenderContext::CreateTexture_Alpha; + m_alphaWanted = alphaRequest && image.hasAlphaChannel(); + + // The engine maps 8-bit formats to R8. This is fine for glyphs and such + // but may not be what apps expect for ordinary image data. The OpenGL + // implementation maps these to ARGB32_Pre so let's follow suit. + if (image.depth() != 8) + m_image = image; + else + m_image = image.convertToFormat(m_alphaWanted ? QImage::Format_ARGB32_Premultiplied : QImage::Format_RGB32); + + m_id = m_engine->genTexture(); + Q_ASSERT(m_id); + + // We could kick off the texture creation and the async upload right here. + // Unfortunately we cannot tell at this stage if mipmaps will be enabled + // via an Image element's mipmap property...so defer to bind(). + m_createPending = true; +} + +QSGD3D12Texture::~QSGD3D12Texture() +{ + if (m_id) + m_engine->releaseTexture(m_id); +} + +int QSGD3D12Texture::textureId() const +{ + return m_id; +} + +QSize QSGD3D12Texture::textureSize() const +{ + return m_image.size(); +} + +bool QSGD3D12Texture::hasAlphaChannel() const +{ + return m_alphaWanted; +} + +bool QSGD3D12Texture::hasMipmaps() const +{ + return mipmapFiltering() != QSGTexture::None; +} + +QRectF QSGD3D12Texture::normalizedTextureSubRect() const +{ + return QRectF(0, 0, 1, 1); +} + +void QSGD3D12Texture::bind() +{ + // Called when the texture material updates the pipeline state. + + if (!m_createPending && hasMipmaps() != m_createdWithMipMaps) { +#ifdef RETAIN_IMAGE + m_engine->releaseTexture(m_id); + m_id = m_engine->genTexture(); + Q_ASSERT(m_id); + m_createPending = true; +#else + // ### this can be made working some day (something similar to + // queueTextureResize) but skip for now + qWarning("D3D12: mipmap property cannot be changed once the texture is created"); +#endif + } + + if (m_createPending) { + m_createPending = false; + + QSGD3D12Engine::TextureCreateFlags createFlags = 0; + if (m_alphaWanted) + createFlags |= QSGD3D12Engine::TextureWithAlpha; + + m_createdWithMipMaps = hasMipmaps(); + if (m_createdWithMipMaps) + createFlags |= QSGD3D12Engine::TextureWithMipMaps; + + m_engine->createTexture(m_id, m_image.size(), m_image.format(), createFlags); + m_engine->queueTextureUpload(m_id, m_image); + +#ifndef RETAIN_IMAGE + m_image = QImage(); +#endif + } + + // Here we know that the texture is going to be used in the current frame + // by the next draw call. Notify the engine so that it can wait for + // possible pending uploads and set up the pipeline accordingly. + m_engine->useTexture(m_id); +} + +QT_END_NAMESPACE |