qssgrendercontextcore.cpp

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// Copyright (C) 2008-2012 NVIDIA Corporation.
// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
 
#include "qssgrendercontextcore.h"
#include <QtQuick3DRuntimeRender/private/qssgrendernode_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrenderbuffermanager_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrendershadercache_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrendercamera_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrendershaderlibrarymanager_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrendershadercodegenerator_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrenderdefaultmaterialshadergenerator_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrhicustommaterialsystem_p.h>
#include <QtQuick3DRuntimeRender/private/qssgperframeallocator_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrenderer_p.h>
#include <QtQuick3DRuntimeRender/private/qssgrendererutil_p.h>
#include <QtQuick3DRuntimeRender/private/qssgdebugdrawsystem_p.h>
 
#include <QtQuick/private/qquickwindow_p.h>
 
QT_BEGIN_NAMESPACE
 
static bool loadPregenratedShaders()
{
    return qEnvironmentVariableIntValue("QT_QUICK3D_DISABLE_GENSHADERS") == 0;
}
 
void QSSGRenderContextInterface::init()
{
    if (m_renderer)
        QSSGRendererPrivate::setRenderContextInterface(*m_renderer, this);
 
    if (m_bufferManager)
        m_bufferManager->setRenderContextInterface(this);
 
    if (m_customMaterialSystem)
        m_customMaterialSystem->setRenderContextInterface(this);
    if (m_shaderLibraryManager && loadPregenratedShaders())
        m_shaderLibraryManager->loadPregeneratedShaderInfo();
}
 
void QSSGRenderContextInterface::releaseCachedResources()
{
    if (m_renderer)
        m_renderer->releaseCachedResources();
    if (m_shaderCache)
        m_shaderCache->releaseCachedResources();
    if (m_customMaterialSystem)
        m_customMaterialSystem->releaseCachedResources();
    if (m_bufferManager)
        m_bufferManager->releaseCachedResources();
    if (m_rhiContext)
        QSSGRhiContextPrivate::get(m_rhiContext.get())->releaseCachedResources();
}
 
const std::unique_ptr<QSSGPerFrameAllocator> &QSSGRenderContextInterface::perFrameAllocator() const
{
    return m_perFrameAllocator;
}
 
QSSGRenderContextInterface::QSSGRenderContextInterface(std::unique_ptr<QSSGBufferManager> bufferManager,
                                                       std::unique_ptr<QSSGRenderer> renderer,
                                                       std::shared_ptr<QSSGShaderLibraryManager> shaderLibraryManager,
                                                       std::unique_ptr<QSSGShaderCache> shaderCache,
                                                       std::unique_ptr<QSSGCustomMaterialSystem> customMaterialSystem,
                                                       std::unique_ptr<QSSGProgramGenerator> shaderProgramGenerator,
                                                       std::unique_ptr<QSSGRhiContext> ctx,
                                                       std::unique_ptr<QSSGDebugDrawSystem> debugDrawSystem)
    : m_rhiContext(std::move(ctx))
    , m_shaderCache(std::move(shaderCache))
    , m_bufferManager(std::move(bufferManager))
    , m_renderer(std::move(renderer))
    , m_shaderLibraryManager(std::move(shaderLibraryManager))
    , m_customMaterialSystem(std::move(customMaterialSystem))
    , m_shaderProgramGenerator(std::move(shaderProgramGenerator))
    , m_debugDrawSystem(std::move(debugDrawSystem))
    , m_perFrameAllocator(new QSSGPerFrameAllocator)
{
    init();
}
 
// The shader library is a global object, not per-QQuickWindow, hence not owned
// by the QSSGRenderContextInterface.
static const std::shared_ptr<QSSGShaderLibraryManager> &q3ds_shaderLibraryManager()
{
    static auto shaderLibraryManager = std::make_shared<QSSGShaderLibraryManager>();
    return shaderLibraryManager;
}
 
QSSGRenderContextInterface::QSSGRenderContextInterface(QRhi *rhi)
    : m_rhiContext(new QSSGRhiContext(rhi))
    , m_shaderCache(new QSSGShaderCache(*m_rhiContext))
    , m_bufferManager(new QSSGBufferManager())
    , m_renderer(new QSSGRenderer())
    , m_shaderLibraryManager(q3ds_shaderLibraryManager())
    , m_customMaterialSystem(new QSSGCustomMaterialSystem())
    , m_shaderProgramGenerator(new QSSGProgramGenerator())
    , m_debugDrawSystem(new QSSGDebugDrawSystem())
    , m_perFrameAllocator(new QSSGPerFrameAllocator)
{
    init();
}
 
QSSGRenderContextInterface::~QSSGRenderContextInterface()
{
    m_renderer->releaseCachedResources();
}
 
const std::unique_ptr<QSSGRenderer> &QSSGRenderContextInterface::renderer() const
{
    return m_renderer;
}
 
const std::unique_ptr<QSSGBufferManager> &QSSGRenderContextInterface::bufferManager() const
{
    return m_bufferManager;
}
 
const std::unique_ptr<QSSGRhiContext> &QSSGRenderContextInterface::rhiContext() const
{
    return m_rhiContext;
}
 
const std::unique_ptr<QSSGShaderCache> &QSSGRenderContextInterface::shaderCache() const
{
    return m_shaderCache;
}
 
const std::shared_ptr<QSSGShaderLibraryManager> &QSSGRenderContextInterface::shaderLibraryManager() const
{
    return m_shaderLibraryManager;
}
 
const std::unique_ptr<QSSGCustomMaterialSystem> &QSSGRenderContextInterface::customMaterialSystem() const
{
    return m_customMaterialSystem;
}
 
const std::unique_ptr<QSSGProgramGenerator> &QSSGRenderContextInterface::shaderProgramGenerator() const
{
    return m_shaderProgramGenerator;
}
 
const std::unique_ptr<QSSGDebugDrawSystem> &QSSGRenderContextInterface::debugDrawSystem() const
{
    return m_debugDrawSystem;
}
 
QRhi *QSSGRenderContextInterface::rhi() const
{
    return m_rhiContext->rhi();
}
 
QT_END_NAMESPACE