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** Copyright (C) 2016 The Qt Company Ltd.
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** This file is part of the QtQuick module of the Qt Toolkit.
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** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
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** 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
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****************************************************************************/

#include "qsgsoftwarecontext_p.h"

#include "qsgsoftwarerectanglenode_p.h"
#include "qsgsoftwareimagenode_p.h"
#include "qsgsoftwarepainternode_p.h"
#include "qsgsoftwarepixmaptexture_p.h"
#include "qsgsoftwareglyphnode_p.h"
#include "qsgsoftwareninepatchnode_p.h"
#include "qsgsoftwarelayer_p.h"
#include "qsgsoftwarerenderer_p.h"

#include <QtCore/QCoreApplication>
#include <QtCore/QElapsedTimer>

#include <QtGui/QWindow>

#include <QtQuick/QSGFlatColorMaterial>
#include <QtQuick/QSGVertexColorMaterial>
#include <QtQuick/QSGOpaqueTextureMaterial>
#include <QtQuick/QSGTextureMaterial>

#ifndef QSG_NO_RENDERER_TIMING
static bool qsg_render_timing = !qgetenv("QSG_RENDER_TIMING").isEmpty();
#endif

// Used for very high-level info about the renderering and gl context
// Includes GL_VERSION, type of render loop, atlas size, etc.
Q_LOGGING_CATEGORY(QSG_RASTER_LOG_INFO,                "qt.scenegraph.info")

// Used to debug the renderloop logic. Primarily useful for platform integrators
// and when investigating the render loop logic.
Q_LOGGING_CATEGORY(QSG_RASTER_LOG_RENDERLOOP,          "qt.scenegraph.renderloop")

// GLSL shader compilation
Q_LOGGING_CATEGORY(QSG_RASTER_LOG_TIME_COMPILATION,    "qt.scenegraph.time.compilation")

// polish, animations, sync, render and swap in the render loop
Q_LOGGING_CATEGORY(QSG_RASTER_LOG_TIME_RENDERLOOP,     "qt.scenegraph.time.renderloop")

// Texture uploads and swizzling
Q_LOGGING_CATEGORY(QSG_RASTER_LOG_TIME_TEXTURE,        "qt.scenegraph.time.texture")

// Glyph preparation (only for distance fields atm)
Q_LOGGING_CATEGORY(QSG_RASTER_LOG_TIME_GLYPH,          "qt.scenegraph.time.glyph")

// Timing inside the renderer base class
Q_LOGGING_CATEGORY(QSG_RASTER_LOG_TIME_RENDERER,       "qt.scenegraph.time.renderer")

QT_BEGIN_NAMESPACE

QSGSoftwareRenderContext::QSGSoftwareRenderContext(QSGContext *ctx)
    : QSGRenderContext(ctx)
    , m_initialized(false)
{
}
QSGSoftwareContext::QSGSoftwareContext(QObject *parent)
    : QSGContext(parent)
{
}

QSGRectangleNode *QSGSoftwareContext::createRectangleNode()
{
    return new QSGSoftwareRectangleNode();
}

QSGImageNode *QSGSoftwareContext::createImageNode()
{
    return new QSGSoftwareImageNode();
}

QSGPainterNode *QSGSoftwareContext::createPainterNode(QQuickPaintedItem *item)
{
    return new QSGSoftwarePainterNode(item);
}

QSGGlyphNode *QSGSoftwareContext::createGlyphNode(QSGRenderContext *rc, bool preferNativeGlyphNode)
{
    Q_UNUSED(rc);
    Q_UNUSED(preferNativeGlyphNode);
    return new QSGSoftwareGlyphNode();
}

QSGNinePatchNode *QSGSoftwareContext::createNinePatchNode()
{
    return new QSGSoftwareNinePatchNode();
}

QSGLayer *QSGSoftwareContext::createLayer(QSGRenderContext *renderContext)
{
    return new QSGSoftwareLayer(renderContext);
}

QSurfaceFormat QSGSoftwareContext::defaultSurfaceFormat() const
{
    QSurfaceFormat format = QSurfaceFormat::defaultFormat();
    format.setRenderableType(QSurfaceFormat::DefaultRenderableType);
    format.setMajorVersion(0);
    format.setMinorVersion(0);
    return format;
}

void QSGSoftwareRenderContext::initializeIfNeeded()
{
    if (m_initialized)
        return;
    m_initialized = true;
    emit initialized();
}

void QSGSoftwareRenderContext::invalidate()
{
    QSGRenderContext::invalidate();
}

QSGTexture *QSGSoftwareRenderContext::createTexture(const QImage &image, uint flags) const
{
    Q_UNUSED(flags)
    return new QSGSoftwarePixmapTexture(image);
}

QSGRenderer *QSGSoftwareRenderContext::createRenderer()
{
    return new QSGSoftwareRenderer(this);
}


void QSGSoftwareRenderContext::renderNextFrame(QSGRenderer *renderer, uint fbo)
{
    renderer->renderScene(fbo);
}

QSGRendererInterface *QSGSoftwareContext::rendererInterface(QSGRenderContext *renderContext)
{
    Q_UNUSED(renderContext);
    return this;
}

QSGRendererInterface::GraphicsApi QSGSoftwareContext::graphicsApi() const
{
    return Software;
}

QT_END_NAMESPACE