| /**************************************************************************** |
| ** |
| ** 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 |
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| ** |
| ** 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 |
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| ** |
| ** 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 |
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| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qsgd3d12layer_p.h" |
| #include "qsgd3d12rendercontext_p.h" |
| #include "qsgd3d12engine_p.h" |
| #include "qsgd3d12renderer_p.h" |
| |
| QT_BEGIN_NAMESPACE |
| |
| // NOTE: Avoid categorized logging. It is slow. |
| |
| #define DECLARE_DEBUG_VAR(variable) \ |
| static bool debug_ ## variable() \ |
| { static bool value = qgetenv("QSG_RENDERER_DEBUG").contains(QT_STRINGIFY(variable)); return value; } |
| |
| DECLARE_DEBUG_VAR(render) |
| |
| QSGD3D12Layer::QSGD3D12Layer(QSGD3D12RenderContext *rc) |
| : QSGLayer(*(new QSGD3D12LayerPrivate)), |
| m_rc(rc) |
| { |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("new layer %p", this); |
| } |
| |
| QSGD3D12Layer::~QSGD3D12Layer() |
| { |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("destroying layer %p", this); |
| |
| cleanup(); |
| } |
| |
| // QSGTexture |
| |
| int QSGD3D12Layer::textureId() const |
| { |
| return m_rt; // not a texture id per se but will do |
| } |
| |
| int QSGD3D12LayerPrivate::comparisonKey() const |
| { |
| Q_Q(const QSGD3D12Layer); |
| return q->m_rt; |
| } |
| |
| QSize QSGD3D12Layer::textureSize() const |
| { |
| return m_size; |
| } |
| |
| bool QSGD3D12Layer::hasAlphaChannel() const |
| { |
| return true; |
| } |
| |
| bool QSGD3D12Layer::hasMipmaps() const |
| { |
| // mipmapped layers are not supported for now |
| return false; |
| } |
| |
| QRectF QSGD3D12Layer::normalizedTextureSubRect() const |
| { |
| return QRectF(m_mirrorHorizontal ? 1 : 0, |
| m_mirrorVertical ? 0 : 1, |
| m_mirrorHorizontal ? -1 : 1, |
| m_mirrorVertical ? 1 : -1); |
| } |
| |
| void QSGD3D12Layer::bind() |
| { |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("layer %p bind rt=%u", this, m_rt); |
| |
| QSGD3D12Engine *engine = m_rc->engine(); |
| Q_ASSERT(m_rt); |
| |
| #ifndef QT_NO_DEBUG |
| // Should not use the color buffer as a texture while it is the current render target. |
| if (!m_recursive && engine->activeRenderTarget() == m_rt && engine->windowSamples() == 1) |
| qWarning("ShaderEffectSource: \'recursive\' must be set to true when rendering recursively."); |
| #endif |
| |
| engine->useRenderTargetAsTexture(m_rt); |
| } |
| |
| // QSGDynamicTexture |
| |
| bool QSGD3D12Layer::updateTexture() |
| { |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("layer %p updateTexture", this); |
| |
| const bool doUpdate = (m_live || m_updateContentPending) && m_dirtyTexture; |
| |
| if (doUpdate) |
| updateContent(); |
| |
| if (m_updateContentPending) { |
| m_updateContentPending = false; |
| emit scheduledUpdateCompleted(); |
| } |
| |
| return doUpdate; |
| } |
| |
| // QSGLayer |
| |
| void QSGD3D12Layer::setItem(QSGNode *item) |
| { |
| if (m_item == item) |
| return; |
| |
| if (m_live && !item) |
| resetRenderTarget(); |
| |
| m_item = item; |
| markDirtyTexture(); |
| } |
| |
| void QSGD3D12Layer::setRect(const QRectF &rect) |
| { |
| if (m_rect == rect) |
| return; |
| |
| m_rect = rect; |
| markDirtyTexture(); |
| } |
| |
| void QSGD3D12Layer::setSize(const QSize &size) |
| { |
| if (m_size == size) |
| return; |
| |
| if (m_live && size.isNull()) |
| resetRenderTarget(); |
| |
| m_size = size; |
| markDirtyTexture(); |
| } |
| |
| void QSGD3D12Layer::scheduleUpdate() |
| { |
| if (m_updateContentPending) |
| return; |
| |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("layer %p scheduleUpdate", this); |
| |
| m_updateContentPending = true; |
| |
| if (m_dirtyTexture) |
| emit updateRequested(); |
| } |
| |
| QImage QSGD3D12Layer::toImage() const |
| { |
| return m_rc->engine()->executeAndWaitReadbackRenderTarget(m_rt); |
| } |
| |
| void QSGD3D12Layer::setLive(bool live) |
| { |
| if (m_live == live) |
| return; |
| |
| if (live && (!m_item || m_size.isNull())) |
| resetRenderTarget(); |
| |
| m_live = live; |
| markDirtyTexture(); |
| } |
| |
| void QSGD3D12Layer::setRecursive(bool recursive) |
| { |
| m_recursive = recursive; |
| } |
| |
| void QSGD3D12Layer::setFormat(uint format) |
| { |
| Q_UNUSED(format); |
| } |
| |
| void QSGD3D12Layer::setHasMipmaps(bool mipmap) |
| { |
| // mipmapped layers are not supported for now |
| Q_UNUSED(mipmap); |
| } |
| |
| void QSGD3D12Layer::setDevicePixelRatio(qreal ratio) |
| { |
| m_dpr = ratio; |
| } |
| |
| void QSGD3D12Layer::setMirrorHorizontal(bool mirror) |
| { |
| m_mirrorHorizontal = mirror; |
| } |
| |
| void QSGD3D12Layer::setMirrorVertical(bool mirror) |
| { |
| m_mirrorVertical = mirror; |
| } |
| |
| void QSGD3D12Layer::markDirtyTexture() |
| { |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("layer %p markDirtyTexture", this); |
| |
| m_dirtyTexture = true; |
| |
| if (m_live || m_updateContentPending) |
| emit updateRequested(); |
| } |
| |
| void QSGD3D12Layer::invalidated() |
| { |
| cleanup(); |
| } |
| |
| void QSGD3D12Layer::cleanup() |
| { |
| if (!m_renderer && !m_rt) |
| return; |
| |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("layer %p cleanup renderer=%p rt=%u", this, m_renderer, m_rt); |
| |
| delete m_renderer; |
| m_renderer = nullptr; |
| |
| resetRenderTarget(); |
| } |
| |
| void QSGD3D12Layer::resetRenderTarget() |
| { |
| if (!m_rt) |
| return; |
| |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("layer %p resetRenderTarget rt=%u", this, m_rt); |
| |
| m_rc->engine()->releaseRenderTarget(m_rt); |
| m_rt = 0; |
| |
| if (m_secondaryRT) { |
| m_rc->engine()->releaseRenderTarget(m_secondaryRT); |
| m_secondaryRT = 0; |
| } |
| } |
| |
| void QSGD3D12Layer::updateContent() |
| { |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("layer %p updateContent", this); |
| |
| if (!m_item || m_size.isNull()) { |
| resetRenderTarget(); |
| m_dirtyTexture = false; |
| return; |
| } |
| |
| QSGNode *root = m_item; |
| while (root->firstChild() && root->type() != QSGNode::RootNodeType) |
| root = root->firstChild(); |
| |
| if (root->type() != QSGNode::RootNodeType) |
| return; |
| |
| if (!m_renderer) { |
| m_renderer = m_rc->createRenderer(); |
| static_cast<QSGD3D12Renderer *>(m_renderer)->turnToLayerRenderer(); |
| connect(m_renderer, &QSGRenderer::sceneGraphChanged, this, &QSGD3D12Layer::markDirtyTexture); |
| } |
| |
| m_renderer->setDevicePixelRatio(m_dpr); |
| m_renderer->setRootNode(static_cast<QSGRootNode *>(root)); |
| |
| QSGD3D12Engine *engine = m_rc->engine(); |
| const uint sampleCount = engine->windowSamples(); |
| const QVector4D clearColor; |
| |
| if (!m_rt || m_rtSize != m_size) { |
| if (m_rt) |
| resetRenderTarget(); |
| |
| m_rt = engine->genRenderTarget(); |
| m_rtSize = m_size; |
| |
| if (Q_UNLIKELY(debug_render())) |
| qDebug("new render target for layer %p, size=%dx%d, samples=%d", |
| this, m_size.width(), m_size.height(), sampleCount); |
| |
| engine->createRenderTarget(m_rt, m_rtSize, clearColor, sampleCount); |
| |
| // For multisampling the resolving via an extra non-ms color buffer is |
| // handled internally in the engine, no need to worry about it here. |
| } |
| |
| if (m_recursive && !m_secondaryRT && sampleCount == 1) { |
| m_secondaryRT = engine->genRenderTarget(); |
| engine->createRenderTarget(m_secondaryRT, m_rtSize, clearColor, sampleCount); |
| } |
| |
| m_dirtyTexture = false; |
| |
| m_renderer->setDeviceRect(m_size); |
| m_renderer->setViewportRect(m_size); |
| |
| // Note that the handling of vertical mirroring differs from OpenGL here |
| // due to y running top-bottom with D3D as opposed to bottom-top with GL. |
| // The common parts of Quick follow OpenGL so vertical mirroring is |
| // typically enabled. |
| QRectF mirrored(m_mirrorHorizontal ? m_rect.right() : m_rect.left(), |
| m_mirrorVertical ? m_rect.top() : m_rect.bottom(), |
| m_mirrorHorizontal ? -m_rect.width() : m_rect.width(), |
| m_mirrorVertical ? m_rect.height() : -m_rect.height()); |
| |
| m_renderer->setProjectionMatrixToRect(mirrored); |
| m_renderer->setClearColor(Qt::transparent); |
| |
| if (!m_recursive || sampleCount > 1) { |
| m_renderer->renderScene(m_rt); |
| } else { |
| m_renderer->renderScene(m_secondaryRT); |
| qSwap(m_rt, m_secondaryRT); |
| } |
| |
| if (m_recursive) |
| markDirtyTexture(); // Continuously update if 'live' and 'recursive'. |
| } |
| |
| QT_END_NAMESPACE |