// Copyright (C) 2020 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include "qquick3dshaderutils_p.h"

#include <QtCore/qfile.h>
#include <QtQml/qqmlcontext.h>
#include <QtQml/qqmlfile.h>

#include "qquick3dviewport_p.h"
#include "qquick3dcustommaterial_p.h"
#include "qquick3deffect_p.h"
#include "qquick3dtextureproviderextension.h"

#include <QtQuick3DRuntimeRender/private/qssgrenderimage_p.h>

QT_BEGIN_NAMESPACE

/*!
    \qmltype Shader
    \inherits QtObject
    \inqmlmodule QtQuick3D
    \brief Container component for defining shader code used by post-processing effects.

    The Shader type is used for populating the \l{Pass::shaders}{shaders} list in the
    render \l{Pass}{pass} of an \l Effect.

    A shader is code which is executed directly on the graphic hardware at a particular
    \l{Shader::stage}{stage} of the rendering pipeline.

    \sa Effect
*/
/*!
    \qmlproperty url Shader::shader
    Specifies the name of the shader source file. For details on how to write shader code,
    see the \l Effect documentation.

    \warning Shader snippets are assumed to be trusted content. Application
    developers are advised to carefully consider the potential implications
    before allowing the loading of user-provided content that is not part of the
    application.
*/
/*!
    \qmlproperty enumeration Shader::stage
    Specifies the stage of the rendering pipeline when the shader code will be executed.
    The default is \c Shader.Fragment

    \value Shader.Vertex The shader is a vertex shader. This code is run once per vertex
    in the input geometry and can be used to modify it before the geometry is rasterized
    (scan converted). In the case of effects, the input geometry is always a quad (four
    vertexes representing the corners of the render target).
    \value Shader.Fragment The shader is a fragment shader. After vertex processing,
    the modified geometry is turned into fragments (rasterization). Then a fragment shader
    is executed for each fragment, assigning a color to it. Fragments are a related concept
    to pixels, but with additional information attached. Also, as a result of some
    anti-aliasing strategies, there may be more than one fragment for each pixel in the
    output.
*/

/*!
    \qmltype TextureInput
    \inherits QtObject
    \inqmlmodule QtQuick3D
    \brief Specifies a texture exposed to the shaders of a CustomMaterial or Effect.

    This is a type which can be used for exposing a \l Texture to a shader, either
    in the \l{Pass}{render pass} of an \l Effect, or in a \l CustomMaterial. It exists
    primarily to assign a local name to the \l Texture that can be referenced from
    shaders.

    When a TextureInput property is declared in an \l Effect or a \l CustomMaterial,
    it will automatically be available as a sampler in all shaders by its property
    name.
*/
/*!
    \qmlproperty Texture TextureInput::texture
    The texture for which this TextureInput serves as an indirection.
*/
/*!
    \qmlproperty bool TextureInput::enabled
    The property determines if this TextureInput is enabled. The default value
    is true. When disabled, the shaders of the effect sample a dummy, opaque
    black texture instead of the one specified by \l texture.
*/

/*!
    \qmltype Pass
    \inherits QtObject
    \inqmlmodule QtQuick3D
    \brief Defines a render pass in an Effect.

    An \l Effect may consist of multiple render passes. Each render pass has a
    setup phase where the list of \l{Pass::commands}{render commands} are executed,
    a \l{Pass::output}{output buffer} and a list of \l{Pass::shaders}{shaders} to
    use for rendering the effect.

    See the documentation for \l Effect for more details on how to set up multiple
    rendering passes.
*/
/*!
    \qmlproperty Buffer Pass::output
    Specifies the output \l {Buffer}{buffer} of the pass.
*/
/*!
    \qmlproperty list Pass::commands
    Specifies the list of render \l {Command}{commands} of the pass.
*/
/*!
    \qmlproperty list Pass::shaders
    Specifies the list of \l {Shader}{shaders} of the pass.
*/

/*!
    \qmltype Command
    \inherits QtObject
    \inqmlmodule QtQuick3D
    \brief Supertype of commands to be performed as part of a pass in an Effect.

    The Command type should not be instantiated by itself, but only exists as a
    polymorphic supertype for the different actions that can be performed as part
    of a \l{Pass}{render pass}.

    \sa BufferInput, SetUniformValue, Effect
*/

/*!
    \qmltype BufferInput
    \inherits Command
    \inqmlmodule QtQuick3D
    \brief Defines an input buffer to be used as input for a pass of an Effect.

    BufferInput is a \l Command which can be added to the list of commands in the \l Pass of
    an \l Effect. When executed, it will expose the buffer as a sample to the shaders
    in the render pass. The shaders must declare a sampler with the name given in the
    BufferInput's \c sampler property.

    This can be used for sharing intermediate results between the different passes of an
    effect.

    \sa TextureInput
*/
/*!
    \qmlproperty Buffer BufferInput::buffer
    Specifies the \l {Buffer}{buffer} which should be exposed to the shader.
*/
/*!
    \qmlproperty string BufferInput::sampler
    Specifies the name under which the buffer is exposed to the shader.
    When this property is not set, the buffer is exposed with the built-in name \c INPUT.
*/

/*!
    \qmltype Buffer
    \inherits QtObject
    \inqmlmodule QtQuick3D
    \brief Creates or references a color buffer to be used for a pass of an Effect.

    A Buffer can be used to create intermediate buffers to share data between
    \l{Pass}{render passes} in an \l Effect.

    \note If the \l name property of the Buffer is empty, it will reference the
    default output texture of the render pass.
*/
/*!
    \qmlproperty enumeration Buffer::format
    Specifies the texture format. The default value is Buffer.RGBA8.

    \value Buffer.RGBA8
    \value Buffer.RGBA16F
    \value Buffer.RGBA32F
    \value Buffer.R8
    \value Buffer.R16
    \value Buffer.R16F
    \value Buffer.R32F
*/
/*!
    \qmlproperty enumeration Buffer::textureFilterOperation
    Specifies the texture filtering mode when sampling the contents of the
    Buffer. The default value is Buffer.Linear.

    \value Buffer.Nearest Use nearest-neighbor filtering.
    \value Buffer.Linear Use linear filtering.
*/
/*!
    \qmlproperty enumeration Buffer::textureCoordOperation
    Specifies the behavior for texture coordinates when sampling outside the [0, 1] range.
    The default is Buffer.ClampToEdge.

    \value Buffer.ClampToEdge Clamp coordinates to the edges.
    \value Buffer.Repeat Wrap the coordinates at the edges to tile the texture.
    \value Buffer.MirroredRepeat Wrap the coordinate at the edges, but mirror the texture
    when tiling it.
*/
/*!
    \qmlproperty real Buffer::sizeMultiplier
    Specifies the size multiplier of the buffer. For instance, a value of \c 1.0 creates
    a buffer with the same size as the effect's input texture while \c 0.5 creates buffer
    where both width and height is half as big. The default value is 1.0.
*/
/*!
    \qmlproperty enumeration Buffer::bufferFlags
    Specifies the buffer allocation flags. The default is Buffer.None.

    \value Buffer.None No special behavior.
    \value Buffer.SceneLifetime The buffer is allocated for the whole lifetime of the scene.
*/
/*!
    \qmlproperty string Buffer::name
    Specifies the name of the buffer.

    \note When this property is empty, the Buffer will refer to the default output texture
    of the \l{Pass}{render pass} instead of allocating a buffer. This can be useful to
    override certain settings of the output, such as the texture format, without introducing
    a new, separate intermediate texture.
*/

/*!
    \qmltype SetUniformValue
    \inherits Command
    \inqmlmodule QtQuick3D
    \brief Defines a value to be set during a single \l {Pass}{pass}.
    \since 5.15

    SetUniformValue is a \l Command which can be added to the list of commands in a \l Pass. When
    executed, it will set the uniform given by the \l{SetUniformValue::target}{target} property
    to \l{SetUniformValue::value}{value}.

    \note The value set by this command is will only be set during the \l {Pass}{pass} it occurs in.
    For consecutive passes the value will be revert to the initial value of the uniform as it
    was defined in the \l Effect item.

    \sa BufferInput
*/
/*!
    \qmlproperty string SetUniformValue::target
    Specifies the name of the uniform that will have its value changed during the \l {Pass}{pass}.
    This must match the name of an existing property in the \l Effect.
*/
/*!
    \qmlproperty Variant SetUniformValue::value
    Specifies the value that will be set on the \c target uniform.
*/

/*!
    \qmltype renderTargetBlend
    \inqmlmodule QtQuick3D
    \brief Defines blending parameters for a single color attachment of a render pass.
    \since 6.11

    The renderTargetBlend type is used to specify blending parameters for a single
    color attachment of a \l RenderPass. An instance of renderTargetBlend can be
    assigned to one of the \c PipelineStateOverride::targetBlendN properties, where N
    is the index of the color attachment to configure.

    \qmlproperty bool renderTargetBlend::blendEnabled
    If set to true, enables blending for the color attachment. If set to false,
    disables blending.

    \qmlproperty enumeration renderTargetBlend::colorWrite
    Sets the color channels that will be written to the color attachment.
    \value renderTargetBlend.R
    \value renderTargetBlend.G
    \value renderTargetBlend.B
    \value renderTargetBlend.A

    \qmlproperty enumeration renderTargetBlend::srcColor
    Sets the source color blend factor for the color attachment.
    \value renderTargetBlend.Zero
    \value renderTargetBlend.One
    \value renderTargetBlend.SrcColor
    \value renderTargetBlend.OneMinusSrcColor
    \value renderTargetBlend.DstColor
    \value renderTargetBlend.OneMinusDstColor
    \value renderTargetBlend.SrcAlpha
    \value renderTargetBlend.OneMinusSrcAlpha
    \value renderTargetBlend.DstAlpha
    \value renderTargetBlend.OneMinusDstAlpha
    \value renderTargetBlend.ConstantColor
    \value renderTargetBlend.OneMinusConstantColor
    \value renderTargetBlend.ConstantAlpha
    \value renderTargetBlend.OneMinusConstantAlpha
    \value renderTargetBlend.SrcAlphaSaturate
    \value renderTargetBlend.Src1Color
    \value renderTargetBlend.OneMinusSrc1Color
    \value renderTargetBlend.Src1Alpha
    \value renderTargetBlend.OneMinusSrc1Alpha

    \qmlproperty enumeration renderTargetBlend::dstColor
    Sets the destination color blend factor for the color attachment.
    \value renderTargetBlend.Zero
    \value renderTargetBlend.One
    \value renderTargetBlend.SrcColor
    \value renderTargetBlend.OneMinusSrcColor
    \value renderTargetBlend.DstColor
    \value renderTargetBlend.OneMinusDstColor
    \value renderTargetBlend.SrcAlpha
    \value renderTargetBlend.OneMinusSrcAlpha
    \value renderTargetBlend.DstAlpha
    \value renderTargetBlend.OneMinusDstAlpha
    \value renderTargetBlend.ConstantColor
    \value renderTargetBlend.OneMinusConstantColor
    \value renderTargetBlend.ConstantAlpha
    \value renderTargetBlend.OneMinusConstantAlpha
    \value renderTargetBlend.SrcAlphaSaturate
    \value renderTargetBlend.Src1Color
    \value renderTargetBlend.OneMinusSrc1Color
    \value renderTargetBlend.Src1Alpha
    \value renderTargetBlend.OneMinusSrc1Alpha

    \qmlproperty enumeration renderTargetBlend::opColor
    Sets the color blend operation for the color attachment.
    \value renderTargetBlend.Add
    \value renderTargetBlend.Subtract
    \value renderTargetBlend.ReverseSubtract
    \value renderTargetBlend.Min
    \value renderTargetBlend.Max

    \qmlproperty enumeration renderTargetBlend::srcAlpha
    Sets the source alpha blend factor for the color attachment.
    \value renderTargetBlend.Zero
    \value renderTargetBlend.One
    \value renderTargetBlend.SrcColor
    \value renderTargetBlend.OneMinusSrcColor
    \value renderTargetBlend.DstColor
    \value renderTargetBlend.OneMinusDstColor
    \value renderTargetBlend.SrcAlpha
    \value renderTargetBlend.OneMinusSrcAlpha
    \value renderTargetBlend.DstAlpha
    \value renderTargetBlend.OneMinusDstAlpha
    \value renderTargetBlend.ConstantColor
    \value renderTargetBlend.OneMinusConstantColor
    \value renderTargetBlend.ConstantAlpha
    \value renderTargetBlend.OneMinusConstantAlpha
    \value renderTargetBlend.SrcAlphaSaturate
    \value renderTargetBlend.Src1Color
    \value renderTargetBlend.OneMinusSrc1Color
    \value renderTargetBlend.Src1Alpha
    \value renderTargetBlend.OneMinusSrc1Alpha

    \qmlproperty enumeration renderTargetBlend::dstAlpha
    Sets the destination alpha blend factor for the color attachment.
    \value renderTargetBlend.Zero
    \value renderTargetBlend.One
    \value renderTargetBlend.SrcColor
    \value renderTargetBlend.OneMinusSrcColor
    \value renderTargetBlend.DstColor
    \value renderTargetBlend.OneMinusDstColor
    \value renderTargetBlend.SrcAlpha
    \value renderTargetBlend.OneMinusSrcAlpha
    \value renderTargetBlend.DstAlpha
    \value renderTargetBlend.OneMinusDstAlpha
    \value renderTargetBlend.ConstantColor
    \value renderTargetBlend.OneMinusConstantColor
    \value renderTargetBlend.ConstantAlpha
    \value renderTargetBlend.OneMinusConstantAlpha
    \value renderTargetBlend.SrcAlphaSaturate
    \value renderTargetBlend.Src1Color
    \value renderTargetBlend.OneMinusSrc1Color
    \value renderTargetBlend.Src1Alpha
    \value renderTargetBlend.OneMinusSrc1Alpha

    \qmlproperty enumeration renderTargetBlend::opAlpha
    Sets the alpha blend operation for the color attachment.
    \value renderTargetBlend.Add
    \value renderTargetBlend.Subtract
    \value renderTargetBlend.ReverseSubtract
    \value renderTargetBlend.Min
    \value renderTargetBlend.Max
 */

/*!
    \qmltype PipelineStateOverride
    \inherits Command
    \inqmlmodule QtQuick3D
    \brief Defines pipeline state overrides for a single \l {RenderPass}{pass}.
    \since 6.11

    PipelineStateOverride is a \l Command which can be added to the list of commands in a \l RenderPass.
    When executed, it will override the pipeline state in the render pass according to the properties set on
    the PipelineStateOverride. Only values that are set will override the existing pipeline state's values.
    If you want to reset a value that has been overriden to the default, then make sure to set the property
    to \c undefined.


    \qmlproperty bool PipelineStateOverride::depthTestEnabled
    If set to true, enables depth testing for the render pass. If set to false, disables depth testing.
    Setting this property to true requires a depth attachment for the render pass.

    \qmlproperty bool PipelineStateOverride::depthWriteEnabled
    If set to true, enables depth writing for the render pass. If set to false, disables depth writing.
    Setting this property to true requires a depth attachment for the render pass.

    \qmlproperty bool PipelineStateOverride::blendEnabled
    If set to true, enables blending for the render pass. If set to false, disables blending.

    \qmlproperty bool PipelineStateOverride::usesStencilReference
    If set to true, enables the use of stencil reference value for the render pass. If set to false,
    disables the use of stencil reference value.

    \qmlproperty bool PipelineStateOverride::usesScissor
    If set to true, enables the use of scissor test for the render pass. If set to false,
    disables the use of scissor test.

    \qmlproperty enumeration PipelineStateOverride::depthFunction
    Sets the depth comparison function for the render pass.
    \value PipelineStateOverride.Never
    \value PipelineStateOverride.Less
    \value PipelineStateOverride.Equal
    \value PipelineStateOverride.LessOrEqual
    \value PipelineStateOverride.Greater
    \value PipelineStateOverride.NotEqual
    \value PipelineStateOverride.GreaterOrEqual
    \value PipelineStateOverride.Always

    \qmlproperty enumeration PipelineStateOverride::cullMode
    Sets the face culling mode for the render pass.
    \value PipelineStateOverride.None
    \value PipelineStateOverride.Front
    \value PipelineStateOverride.Back

    \qmlproperty enumeration PipelineStateOverride::polygonMode
    Sets the polygon rasterization mode for the render pass.
    \value PipelineStateOverride.Fill
    \value PipelineStateOverride.Line

    \qmlproperty uint PipelineStateOverride::stencilWriteMask
    Sets the stencil write mask for the render pass.

    \qmlproperty uint PipelineStateOverride::stencilReference
    Sets the stencil reference value for the render pass.

    \qmlproperty Rectangle PipelineStateOverride::viewport
    Sets the viewport rectangle for the render pass.

    \qmlproperty Rectangle PipelineStateOverride::scissor
    Sets the scissor rectangle for the render pass.

    \qmlproperty TargetBlend PipelineStateOverride::targetBlend0
    Sets the blending parameters for color attachment 0 of the render pass.

    \qmlproperty TargetBlend PipelineStateOverride::targetBlend1
    Sets the blending parameters for color attachment 1 of the render pass.

    \qmlproperty TargetBlend PipelineStateOverride::targetBlend2
    Sets the blending parameters for color attachment 2 of the render pass.

    \qmlproperty TargetBlend PipelineStateOverride::targetBlend3
    Sets the blending parameters for color attachment 3 of the render pass.

    \qmlproperty TargetBlend PipelineStateOverride::targetBlend4
    Sets the blending parameters for color attachment 4 of the render pass.

    \qmlproperty TargetBlend PipelineStateOverride::targetBlend5
    Sets the blending parameters for color attachment 5 of the render pass.

    \qmlproperty TargetBlend PipelineStateOverride::targetBlend6
    Sets the blending parameters for color attachment 6 of the render pass.

    \qmlproperty TargetBlend PipelineStateOverride::targetBlend7
    Sets the blending parameters for color attachment 7 of the render pass.
*/

/*!
    \qmltype DepthStencilAttachment
    \inherits Command
    \inqmlmodule QtQuick3D
    \brief Defines a depth-stencil attachment for a RenderPass.
    \since 6.11

    The DepthStencilAttachment type is used to specify a depth-stencil attachment
    for a \l RenderPass. This represents a render buffer attachment, so it cannot be
    directly sampled in shaders.
*/


namespace QSSGShaderUtils {

ResolveFunction resolveShaderOverride = nullptr;

void setResolveFunction(ResolveFunction fn)
{
    resolveShaderOverride = fn;
}

QByteArray resolveShader(const QUrl &fileUrl, const QQmlContext *context, QByteArray &shaderPathKey)
{
    if (resolveShaderOverride) {
        QByteArray shaderData;
        if (resolveShaderOverride(fileUrl, context, shaderData, shaderPathKey))
            return shaderData;
    }

    if (!shaderPathKey.isEmpty())
        shaderPathKey.append('>');

    const QUrl loadUrl = context ? context->resolvedUrl(fileUrl) : fileUrl;
    const QString filePath = QQmlFile::urlToLocalFileOrQrc(loadUrl);

    QFile f(filePath);
    if (f.open(QIODevice::ReadOnly | QIODevice::Text)) {
        shaderPathKey += loadUrl.fileName().toUtf8();
        return f.readAll();
    } else {
        qWarning("Failed to read shader code from %s", qPrintable(filePath));
    }

    return QByteArray();
}

// These are the QMetaTypes that we convert into uniforms.
static constexpr QMetaType::Type qssg_metatype_list[] {
        QMetaType::Double,
        QMetaType::Bool,
        QMetaType::QVector2D,
        QMetaType::QVector3D,
        QMetaType::QVector4D,
        QMetaType::Int,
        QMetaType::QColor,
        QMetaType::QSize,
        QMetaType::QSizeF,
        QMetaType::QPoint,
        QMetaType::QPointF,
        QMetaType::QRect,
        QMetaType::QRectF,
        QMetaType::QQuaternion,
        QMetaType::QMatrix4x4
};

template<>
struct ShaderType<QMetaType::Double>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Float; }
    static QByteArray name() { return QByteArrayLiteral("float"); }
};

template<>
struct ShaderType<QMetaType::Bool>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Boolean; }
    static QByteArray name() { return QByteArrayLiteral("bool"); }
};

template<>
struct ShaderType<QMetaType::Int>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Integer; }
    static QByteArray name() { return QByteArrayLiteral("int"); }
};

template<>
struct ShaderType<QMetaType::QVector2D>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Vec2; }
    static QByteArray name() { return QByteArrayLiteral("vec2"); }
};

template<>
struct ShaderType<QMetaType::QVector3D>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Vec3; }
    static QByteArray name() { return QByteArrayLiteral("vec3"); }
};

template<>
struct ShaderType<QMetaType::QVector4D>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Vec4; }
    static QByteArray name() { return QByteArrayLiteral("vec4"); }
};

template<>
struct ShaderType<QMetaType::QColor>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Rgba; }
    static QByteArray name() { return QByteArrayLiteral("vec4"); }
};

template<>
struct ShaderType<QMetaType::QSize>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Size; }
    static QByteArray name() { return QByteArrayLiteral("vec2"); }
};

template<>
struct ShaderType<QMetaType::QSizeF>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::SizeF; }
    static QByteArray name() { return QByteArrayLiteral("vec2"); }
};

template<>
struct ShaderType<QMetaType::QPoint>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Point; }
    static QByteArray name() { return QByteArrayLiteral("vec2"); }
};

template<>
struct ShaderType<QMetaType::QPointF>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::PointF; }
    static QByteArray name() { return QByteArrayLiteral("vec2"); }
};

template<>
struct ShaderType<QMetaType::QRect>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Rect; }
    static QByteArray name() { return QByteArrayLiteral("vec4"); }
};

template<>
struct ShaderType<QMetaType::QRectF>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::RectF; }
    static QByteArray name() { return QByteArrayLiteral("vec4"); }
};

template<>
struct ShaderType<QMetaType::QQuaternion>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Quaternion; }
    static QByteArray name() { return QByteArrayLiteral("vec4"); }
};

template<>
struct ShaderType<QMetaType::QMatrix4x4>
{
    static constexpr QSSGRenderShaderValue::Type type() { return QSSGRenderShaderValue::Matrix4x4; }
    static QByteArray name() { return QByteArrayLiteral("mat4"); }
};

QByteArray uniformTypeName(QMetaType type)
{
    switch (type.id()) {
    case QMetaType::Double:
    case QMetaType::Float:
        return ShaderType<QMetaType::Double>::name();
    case QMetaType::Bool:
        return ShaderType<QMetaType::Bool>::name();
    case QMetaType::QVector2D:
        return ShaderType<QMetaType::QVector2D>::name();
    case QMetaType::QVector3D:
        return ShaderType<QMetaType::QVector3D>::name();
    case QMetaType::QVector4D:
        return ShaderType<QMetaType::QVector4D>::name();
    case QMetaType::Int:
        return ShaderType<QMetaType::Int>::name();
    case QMetaType::QColor:
        return ShaderType<QMetaType::QColor>::name();
    case QMetaType::QSize:
        return ShaderType<QMetaType::QSize>::name();
    case QMetaType::QSizeF:
        return ShaderType<QMetaType::QSizeF>::name();
    case QMetaType::QPoint:
        return ShaderType<QMetaType::QPoint>::name();
    case QMetaType::QPointF:
        return ShaderType<QMetaType::QPointF>::name();
    case QMetaType::QRect:
        return ShaderType<QMetaType::QRect>::name();
    case QMetaType::QRectF:
        return ShaderType<QMetaType::QRectF>::name();
    case QMetaType::QQuaternion:
        return ShaderType<QMetaType::QQuaternion>::name();
    case QMetaType::QMatrix4x4:
        return ShaderType<QMetaType::QMatrix4x4>::name();
    default:
        return QByteArray();
    }
}

QByteArray uniformTypeName(QSSGRenderShaderValue::Type type)
{
    switch (type) {
    case QSSGRenderShaderValue::Float:
        return ShaderType<QMetaType::Double>::name();
    case QSSGRenderShaderValue::Boolean:
        return ShaderType<QMetaType::Bool>::name();
    case QSSGRenderShaderValue::Integer:
        return ShaderType<QMetaType::Int>::name();
    case QSSGRenderShaderValue::Vec2:
        return ShaderType<QMetaType::QVector2D>::name();
    case QSSGRenderShaderValue::Vec3:
        return ShaderType<QMetaType::QVector3D>::name();
    case QSSGRenderShaderValue::Vec4:
        return ShaderType<QMetaType::QVector4D>::name();
    case QSSGRenderShaderValue::Rgba:
        return ShaderType<QMetaType::QColor>::name();
    case QSSGRenderShaderValue::Size:
        return ShaderType<QMetaType::QSize>::name();
    case QSSGRenderShaderValue::SizeF:
        return ShaderType<QMetaType::QSizeF>::name();
    case QSSGRenderShaderValue::Point:
        return ShaderType<QMetaType::QPoint>::name();
    case QSSGRenderShaderValue::PointF:
        return ShaderType<QMetaType::QPointF>::name();
    case QSSGRenderShaderValue::Rect:
        return ShaderType<QMetaType::QRect>::name();
    case QSSGRenderShaderValue::RectF:
        return ShaderType<QMetaType::QRectF>::name();
    case QSSGRenderShaderValue::Quaternion:
        return ShaderType<QMetaType::QQuaternion>::name();
    case QSSGRenderShaderValue::Matrix4x4:
        return ShaderType<QMetaType::QMatrix4x4>::name();
    default:
        return QByteArray();
    }
}

QSSGRenderShaderValue::Type uniformType(QMetaType type)
{
    switch (type.id()) {
    case QMetaType::Double:
    case QMetaType::Float:
        return ShaderType<QMetaType::Double>::type();
    case QMetaType::Bool:
        return ShaderType<QMetaType::Bool>::type();
    case QMetaType::QVector2D:
        return ShaderType<QMetaType::QVector2D>::type();
    case QMetaType::QVector3D:
        return ShaderType<QMetaType::QVector3D>::type();
    case QMetaType::QVector4D:
        return ShaderType<QMetaType::QVector4D>::type();
    case QMetaType::Int:
        return ShaderType<QMetaType::Int>::type();
    case QMetaType::QColor:
        return ShaderType<QMetaType::QColor>::type();
    case QMetaType::QSize:
        return ShaderType<QMetaType::QSize>::type();
    case QMetaType::QSizeF:
        return ShaderType<QMetaType::QSizeF>::type();
    case QMetaType::QPoint:
        return ShaderType<QMetaType::QPoint>::type();
    case QMetaType::QPointF:
        return ShaderType<QMetaType::QPointF>::type();
    case QMetaType::QRect:
        return ShaderType<QMetaType::QRect>::type();
    case QMetaType::QRectF:
        return ShaderType<QMetaType::QRectF>::type();
    case QMetaType::QQuaternion:
        return ShaderType<QMetaType::QQuaternion>::type();
    case QMetaType::QMatrix4x4:
        return ShaderType<QMetaType::QMatrix4x4>::type();
    default:
        return QSSGRenderShaderValue::Unknown;
    }
}

MetaTypeList supportedMetatypes()
{
    return {std::begin(qssg_metatype_list), std::end(qssg_metatype_list)};
}

}

QQuick3DShaderUtilsBuffer::TextureFormat QQuick3DShaderUtilsBuffer::mapRenderTextureFormat(QSSGRenderTextureFormat::Format fmt)
{
    using TextureFormat = QQuick3DShaderUtilsBuffer::TextureFormat;
    switch (fmt) {
    case QSSGRenderTextureFormat::RGBA8: return TextureFormat::RGBA8;
    case QSSGRenderTextureFormat::RGBA16F: return TextureFormat::RGBA16F;
    case QSSGRenderTextureFormat::RGBA32F: return TextureFormat::RGBA32F;
    case QSSGRenderTextureFormat::R8: return TextureFormat::R8;
    case QSSGRenderTextureFormat::R16: return TextureFormat::R16;
    case QSSGRenderTextureFormat::R16F: return TextureFormat::R16F;
    case QSSGRenderTextureFormat::R32F: return TextureFormat::R32F;
    default:
        break;
    }
    return TextureFormat::Unknown;
}

QSSGRenderTextureFormat::Format QQuick3DShaderUtilsBuffer::mapTextureFormat(QQuick3DShaderUtilsBuffer::TextureFormat fmt)
{
    using TextureFormat = QQuick3DShaderUtilsBuffer::TextureFormat;
    switch (fmt) {
    case TextureFormat::RGBA8: return QSSGRenderTextureFormat::RGBA8;
    case TextureFormat::RGBA16F: return QSSGRenderTextureFormat::RGBA16F;
    case TextureFormat::RGBA32F: return QSSGRenderTextureFormat::RGBA32F;
    case TextureFormat::R8: return QSSGRenderTextureFormat::R8;
    case TextureFormat::R16: return QSSGRenderTextureFormat::R16;
    case TextureFormat::R16F: return QSSGRenderTextureFormat::R16F;
    case TextureFormat::R32F: return QSSGRenderTextureFormat::R32F;
    default:
        break;
    }
    return QSSGRenderTextureFormat::Unknown;
}

QQuick3DShaderUtilsBuffer::TextureFormat QQuick3DShaderUtilsBuffer::format() const
{
    return mapRenderTextureFormat(command.m_format.format);
}

void QQuick3DShaderUtilsBuffer::setFormat(TextureFormat format)
{
    QSSGRenderTextureFormat::Format mappedTextureFormat = mapTextureFormat(format);
    if (command.m_format == mappedTextureFormat)
        return;

    command.m_format = mappedTextureFormat;
    emit changed();
}

void QQuick3DShaderUtilsBuffer::setTextureFilterOperation(TextureFilterOperation op)
{
    if (command.m_filterOp == QSSGRenderTextureFilterOp(op))
        return;

    command.m_filterOp = QSSGRenderTextureFilterOp(op);
    emit changed();
}

void QQuick3DShaderUtilsBuffer::setTextureCoordOperation(TextureCoordOperation texCoordOp)
{
    if (command.m_texCoordOp == QSSGRenderTextureCoordOp(texCoordOp))
        return;

    command.m_texCoordOp = QSSGRenderTextureCoordOp(texCoordOp);
    emit changed();
}

void QQuick3DShaderUtilsBuffer::setBufferFlags(AllocateBufferFlagValues flag)
{
    if (quint32(command.m_bufferFlags) == quint32(flag))
        return;

    command.m_bufferFlags = quint32(flag);
    emit changed();
}

QQuick3DShaderUtilsRenderPass::~QQuick3DShaderUtilsRenderPass()
{

}

void QQuick3DShaderUtilsRenderPass::qmlAppendCommand(QQmlListProperty<QQuick3DShaderUtilsRenderCommand> *list,
                                                     QQuick3DShaderUtilsRenderCommand *command)
{
    if (!command)
        return;

    QQuick3DShaderUtilsRenderPass *that = qobject_cast<QQuick3DShaderUtilsRenderPass *>(list->object);
    that->m_commands.push_back(command);
    emit that->changed();
}

QQuick3DShaderUtilsRenderCommand *QQuick3DShaderUtilsRenderPass::qmlCommandAt(QQmlListProperty<QQuick3DShaderUtilsRenderCommand> *list,
                                                                              qsizetype index)
{
    QQuick3DShaderUtilsRenderPass *that = qobject_cast<QQuick3DShaderUtilsRenderPass *>(list->object);
    return that->m_commands.at(index);
}

qsizetype QQuick3DShaderUtilsRenderPass::qmlCommandCount(QQmlListProperty<QQuick3DShaderUtilsRenderCommand> *list)
{
    QQuick3DShaderUtilsRenderPass *that = qobject_cast<QQuick3DShaderUtilsRenderPass *>(list->object);
    return that->m_commands.size();
}

void QQuick3DShaderUtilsRenderPass::qmlCommandClear(QQmlListProperty<QQuick3DShaderUtilsRenderCommand> *list)
{
    QQuick3DShaderUtilsRenderPass *that = qobject_cast<QQuick3DShaderUtilsRenderPass *>(list->object);
    that->m_commands.clear();
    emit that->changed();
}

QQmlListProperty<QQuick3DShaderUtilsRenderCommand> QQuick3DShaderUtilsRenderPass::commands()
{
    return QQmlListProperty<QQuick3DShaderUtilsRenderCommand>(this,
                                                             nullptr,
                                                             QQuick3DShaderUtilsRenderPass::qmlAppendCommand,
                                                             QQuick3DShaderUtilsRenderPass::qmlCommandCount,
                                                             QQuick3DShaderUtilsRenderPass::qmlCommandAt,
                                                             QQuick3DShaderUtilsRenderPass::qmlCommandClear);
}

void QQuick3DShaderUtilsRenderPass::qmlAppendShader(QQmlListProperty<QQuick3DShaderUtilsShader> *list,
                                                    QQuick3DShaderUtilsShader *shader)
{
    if (!shader)
        return;

    QQuick3DShaderUtilsRenderPass *that = qobject_cast<QQuick3DShaderUtilsRenderPass *>(list->object);

    // An append implementation CANNOT rely on the object (shader in this case)
    // being complete. When the list references a Shader object living under
    // another Effect, its properties may not be set at the point of this
    // function being called, so accessing shader->stage is not allowed since
    // it may still have its default value, not what is set from QML...

    // the only thing we can do is to append to our list, do not try to be clever
    that->m_shaders.append(shader);

    connect(shader, &QQuick3DShaderUtilsShader::shaderChanged, that, &QQuick3DShaderUtilsRenderPass::changed);
    connect(shader, &QQuick3DShaderUtilsShader::stageChanged, that, &QQuick3DShaderUtilsRenderPass::changed);

    emit that->changed();
}

QQuick3DShaderUtilsShader *QQuick3DShaderUtilsRenderPass::qmlShaderAt(QQmlListProperty<QQuick3DShaderUtilsShader> *list,
                                                                      qsizetype index)
{
    QQuick3DShaderUtilsRenderPass *that = qobject_cast<QQuick3DShaderUtilsRenderPass *>(list->object);
    return that->m_shaders.at(index);
}

qsizetype QQuick3DShaderUtilsRenderPass::qmlShaderCount(QQmlListProperty<QQuick3DShaderUtilsShader> *list)
{
    QQuick3DShaderUtilsRenderPass *that = qobject_cast<QQuick3DShaderUtilsRenderPass *>(list->object);
    return that->m_shaders.size();
}

void QQuick3DShaderUtilsRenderPass::qmlShaderClear(QQmlListProperty<QQuick3DShaderUtilsShader> *list)
{
    QQuick3DShaderUtilsRenderPass *that = qobject_cast<QQuick3DShaderUtilsRenderPass *>(list->object);

    for (QQuick3DShaderUtilsShader *shader : that->m_shaders)
        shader->disconnect(that);

    that->m_shaders.clear();

    emit that->changed();
}

QQmlListProperty<QQuick3DShaderUtilsShader> QQuick3DShaderUtilsRenderPass::shaders()
{
    return QQmlListProperty<QQuick3DShaderUtilsShader>(this,
                                                      nullptr,
                                                      QQuick3DShaderUtilsRenderPass::qmlAppendShader,
                                                      QQuick3DShaderUtilsRenderPass::qmlShaderCount,
                                                      QQuick3DShaderUtilsRenderPass::qmlShaderAt,
                                                      QQuick3DShaderUtilsRenderPass::qmlShaderClear);
}

QQuick3DShaderUtilsTextureInput::QQuick3DShaderUtilsTextureInput(QQuick3DObject *p) : QQuick3DObject(p) {}

QQuick3DShaderUtilsTextureInput::~QQuick3DShaderUtilsTextureInput()
{
}

void QQuick3DShaderUtilsTextureInput::setTexture(QQuick3DTexture *texture)
{
    if (m_texture == texture)
        return;

    QObject *p = parent();
    while (p != nullptr) {
        if (QQuick3DCustomMaterial *mat = qobject_cast<QQuick3DCustomMaterial *>(p)) {
            mat->setDynamicTextureMap(this);
            QQuick3DObjectPrivate::attachWatcherPriv(mat, this, &QQuick3DShaderUtilsTextureInput::setTexture, texture, m_texture);
            break;
        } else if (QQuick3DEffect *efx = qobject_cast<QQuick3DEffect *>(p)) {
            efx->setDynamicTextureMap(this);
            QQuick3DObjectPrivate::attachWatcherPriv(efx, this, &QQuick3DShaderUtilsTextureInput::setTexture, texture, m_texture);
            break;
        }
        p = p->parent();
    }

    if (p == nullptr) {
        qWarning("A TextureInput was defined without a CustomMaterial or Effect ancestor. This should be avoided.");
    }

    m_texture = texture;
    Q_EMIT textureChanged();
}

/*!
    \qmltype RenderablesFilter
    \inherits Command
    \inqmlmodule QtQuick3D
    \brief Defines a filter for selecting which renderables to affect in a \l {RenderPass}{pass}.
    \since 6.11

    The RenderablesFilter type is used to specify which renderables in the scene
    should be affected by a \l RenderPass. By setting the \c renderableTypes property,
    you can control whether the pass affects Opaque or Transparent objects.

    In addition to filtering by renderable types, you can also use the \l{RenderablesFilter::layerMask}{layerMask}
    to further refine which renderables are affected based on their assigned \l{QtQuick3D::Node::layers}{layers}.
*/

/*!
    \qmlproperty int RenderablesFilter::layerMask
    Sets the layer mask for the filter. Only renderables on the specified layers will be affected by the filter.

    \sa l{QtQuick3D::Node::layers}
*/

/*!
    \qmlproperty enumeration RenderablesFilter::renderableTypes
    Sets the types of renderables that the filter will affect.

    \value RenderablesFilter.Opaque
    \value RenderablesFilter.Transparent
*/
QQuick3DShaderUtilsRenderablesFilter::RenderableTypes QQuick3DShaderUtilsRenderablesFilter::renderableTypes() const
{
    return static_cast<QQuick3DShaderUtilsRenderablesFilter::RenderableTypes>(command.renderableTypes);
}

QQuick3DShaderUtilsRenderablesFilter::~QQuick3DShaderUtilsRenderablesFilter()
{

}

void QQuick3DShaderUtilsRenderablesFilter::setRenderableTypes(RenderableTypes types)
{
    command.renderableTypes = static_cast<QSSGRenderablesFilterCommand::RenderableTypeT>(types.toInt());
}

QQuick3DShaderUtilsPipelineStateOverride::~QQuick3DShaderUtilsPipelineStateOverride()
{

}

bool QQuick3DShaderUtilsPipelineStateOverride::depthTestEnabled() const
{
    if (command.m_depthTestEnabled)
        return *command.m_depthTestEnabled;
    return false;
}

void QQuick3DShaderUtilsPipelineStateOverride::setDepthTestEnabled(bool newDepthTestEnabled)
{
    if (command.m_depthTestEnabled && *command.m_depthTestEnabled == newDepthTestEnabled)
        return;
    command.m_depthTestEnabled = newDepthTestEnabled;
    emit depthTestEnabledChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetDepthTestEnabled()
{
    command.m_depthTestEnabled.reset();
    emit depthTestEnabledChanged();
}

bool QQuick3DShaderUtilsPipelineStateOverride::depthWriteEnabled() const
{
    if (command.m_depthWriteEnabled)
        return *command.m_depthWriteEnabled;
    return false;
}

void QQuick3DShaderUtilsPipelineStateOverride::setDepthWriteEnabled(bool newDepthWriteEnabled)
{
    if (command.m_depthWriteEnabled && *command.m_depthWriteEnabled == newDepthWriteEnabled)
        return;
    command.m_depthWriteEnabled = newDepthWriteEnabled;
    emit depthWriteEnabledChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetDepthWriteEnabled()
{
    command.m_depthWriteEnabled.reset();
    emit depthWriteEnabledChanged();
}

bool QQuick3DShaderUtilsPipelineStateOverride::blendEnabled() const
{
    if (command.m_blendEnabled)
        return *command.m_blendEnabled;
    return false;
}

void QQuick3DShaderUtilsPipelineStateOverride::setBlendEnabled(bool newBlendEnabled)
{
    if (command.m_blendEnabled && *command.m_blendEnabled == newBlendEnabled)
        return;
    command.m_blendEnabled = newBlendEnabled;
    emit blendEnabledChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetBlendEnabled()
{
    command.m_blendEnabled.reset();
    emit blendEnabledChanged();
}

bool QQuick3DShaderUtilsPipelineStateOverride::usesStencilReference() const
{
    if (command.m_usesStencilReference)
        return *command.m_usesStencilReference;
    return false;
}

void QQuick3DShaderUtilsPipelineStateOverride::setUsesStencilReference(bool newUsesStencilReference)
{
    if (command.m_usesStencilReference && *command.m_usesStencilReference == newUsesStencilReference)
        return;
    command.m_usesStencilReference = newUsesStencilReference;
    emit usesStencilReferenceChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetUsesStencilReference()
{
    command.m_usesStencilReference.reset();
    emit usesStencilReferenceChanged();
}

bool QQuick3DShaderUtilsPipelineStateOverride::usesScissor() const
{
    if (command.m_usesScissor)
        return *command.m_usesScissor;
    return false;
}

void QQuick3DShaderUtilsPipelineStateOverride::setUsesScissor(bool newUsesScissor)
{
    if (command.m_usesScissor && *command.m_usesScissor == newUsesScissor)
        return;
    command.m_usesScissor = newUsesScissor;
    emit usesScissorChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetUsesScissor()
{
    command.m_usesScissor.reset();
    emit usesScissorChanged();
}

QQuick3DShaderUtilsPipelineStateOverride::CompareOperation QQuick3DShaderUtilsPipelineStateOverride::depthFunction() const
{
    if (command.m_depthFunction)
        return CompareOperation(*command.m_depthFunction);
    return CompareOperation::Less;
}

void QQuick3DShaderUtilsPipelineStateOverride::setDepthFunction(CompareOperation newDepthFunction)
{
    if (command.m_depthFunction && *command.m_depthFunction == QRhiGraphicsPipeline::CompareOp(newDepthFunction))
        return;
    command.m_depthFunction = QRhiGraphicsPipeline::CompareOp(newDepthFunction);
    emit depthFunctionChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetDepthFunction()
{
    command.m_depthFunction.reset();
    emit depthFunctionChanged();
}

QQuick3DShaderUtilsPipelineStateOverride::CullMode QQuick3DShaderUtilsPipelineStateOverride::cullMode() const
{
    if (command.m_cullMode)
        return CullMode(*command.m_cullMode);
    return CullMode::Back;
}

void QQuick3DShaderUtilsPipelineStateOverride::setCullMode(CullMode newCullMode)
{
    if (command.m_cullMode && *command.m_cullMode == QRhiGraphicsPipeline::CullMode(newCullMode))
        return;
    command.m_cullMode = QRhiGraphicsPipeline::CullMode(newCullMode);
    emit cullModeChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetCullMode()
{
    command.m_cullMode.reset();
    emit cullModeChanged();
}

QQuick3DShaderUtilsPipelineStateOverride::PolygonMode QQuick3DShaderUtilsPipelineStateOverride::polygonMode() const
{
    if (command.m_polygonMode)
        return PolygonMode(*command.m_polygonMode);
    return PolygonMode::Fill;
}

void QQuick3DShaderUtilsPipelineStateOverride::setPolygonMode(PolygonMode newPolygonMode)
{
    if (command.m_polygonMode && *command.m_polygonMode == QRhiGraphicsPipeline::PolygonMode(newPolygonMode))
        return;
    command.m_polygonMode = QRhiGraphicsPipeline::PolygonMode(newPolygonMode);
    emit polygonModeChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetPolygonMode()
{
    command.m_polygonMode.reset();
    emit polygonModeChanged();
}

quint32 QQuick3DShaderUtilsPipelineStateOverride::stencilWriteMask() const
{
    if (command.m_stencilWriteMask)
        return *command.m_stencilWriteMask;
    return 0;
}

void QQuick3DShaderUtilsPipelineStateOverride::setStencilWriteMask(quint32 newStencilWriteMask)
{
    if (command.m_stencilWriteMask && *command.m_stencilWriteMask == newStencilWriteMask)
        return;
    command.m_stencilWriteMask = newStencilWriteMask;
    emit stencilWriteMaskChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetStencilWriteMask()
{
    command.m_stencilWriteMask.reset();
    emit stencilWriteMaskChanged();
}

quint32 QQuick3DShaderUtilsPipelineStateOverride::stencilReference() const
{
    if (command.m_stencilReference)
        return *command.m_stencilReference;
    return 0;
}

void QQuick3DShaderUtilsPipelineStateOverride::setStencilReference(quint32 newStencilReference)
{
    if (command.m_stencilReference && *command.m_stencilReference == newStencilReference)
        return;
    command.m_stencilReference = newStencilReference;
    emit stencilReferenceChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetStencilReference()
{
    command.m_stencilReference.reset();
    emit stencilReferenceChanged();
}

QRectF QQuick3DShaderUtilsPipelineStateOverride::viewport() const
{
    if (command.m_viewport) {
        const QRhiViewport &vp = *command.m_viewport;
        return QRectF(vp.viewport()[0], vp.viewport()[1], vp.viewport()[2], vp.viewport()[3]);
    }
    return QRectF();
}

void QQuick3DShaderUtilsPipelineStateOverride::setViewport(const QRectF &newViewport)
{
    if (command.m_viewport) {
        const QRhiViewport &vp = *command.m_viewport;
        if (vp.viewport()[0] == newViewport.x() &&
            vp.viewport()[1] == newViewport.y() &&
            vp.viewport()[2] == newViewport.width() &&
            vp.viewport()[3] == newViewport.height())
        return;
    }
    command.m_viewport = QRhiViewport(newViewport.x(), newViewport.y(), newViewport.width(), newViewport.height());
    emit viewportChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetViewport()
{
    command.m_viewport.reset();
    emit viewportChanged();
}

QRect QQuick3DShaderUtilsPipelineStateOverride::scissor() const
{
    if (command.m_scissor) {
        const QRhiScissor &sc = *command.m_scissor;
        return QRect(sc.scissor()[0], sc.scissor()[1], sc.scissor()[2], sc.scissor()[3]);
    }
    return QRect();
}

void QQuick3DShaderUtilsPipelineStateOverride::setScissor(const QRect &newScissor)
{
    if (command.m_viewport) {
        const QRhiScissor &sc = *command.m_scissor;
        if (sc.scissor()[0] == newScissor.x() &&
            sc.scissor()[1] == newScissor.y() &&
            sc.scissor()[2] == newScissor.width() &&
            sc.scissor()[3] == newScissor.height())
            return;
    }
    command.m_scissor = QRhiScissor(newScissor.x(), newScissor.y(), newScissor.width(), newScissor.height());
    emit scissorChanged();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetScissor()
{
    command.m_scissor.reset();
}

QQuick3DRenderPassTargetBlend QQuick3DShaderUtilsPipelineStateOverride::targetBlend0() const
{
    if (command.m_targetBlend0)
        return *command.m_targetBlend0;
    return {};
}

void QQuick3DShaderUtilsPipelineStateOverride::setTargetBlend0(const QQuick3DRenderPassTargetBlend &newTargetBlend0)
{
    if (command.m_targetBlend0 && QQuick3DRenderPassTargetBlend(*command.m_targetBlend0) == newTargetBlend0)
        return;

    command.m_targetBlend0 = newTargetBlend0.toRhiTargetBlend();;
    emit targetBlend0Changed();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetTargetBlend0()
{
    command.m_targetBlend0.reset();
    emit targetBlend0Changed();
}

QQuick3DRenderPassTargetBlend QQuick3DShaderUtilsPipelineStateOverride::targetBlend1() const
{
    if (command.m_targetBlend1)
        return *command.m_targetBlend1;
    return {};
}

void QQuick3DShaderUtilsPipelineStateOverride::setTargetBlend1(const QQuick3DRenderPassTargetBlend &newTargetBlend1)
{
    if (command.m_targetBlend1 && QQuick3DRenderPassTargetBlend(*command.m_targetBlend1) == newTargetBlend1)
        return;
    command.m_targetBlend1 = newTargetBlend1.toRhiTargetBlend();
    emit targetBlend1Changed();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetTargetBlend1()
{
    command.m_targetBlend1.reset();
    emit targetBlend1Changed();
}

QQuick3DRenderPassTargetBlend QQuick3DShaderUtilsPipelineStateOverride::targetBlend2() const
{
    if (command.m_targetBlend2)
        return *command.m_targetBlend2;
    return {};
}

void QQuick3DShaderUtilsPipelineStateOverride::setTargetBlend2(const QQuick3DRenderPassTargetBlend &newTargetBlend2)
{
    if (command.m_targetBlend2 && QQuick3DRenderPassTargetBlend(*command.m_targetBlend2) == newTargetBlend2)
        return;
    command.m_targetBlend2 = newTargetBlend2.toRhiTargetBlend();
    emit targetBlend2Changed();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetTargetBlend2()
{
    command.m_targetBlend2.reset();
    emit targetBlend2Changed();
}

QQuick3DRenderPassTargetBlend QQuick3DShaderUtilsPipelineStateOverride::targetBlend3() const
{
    if (command.m_targetBlend3)
        return *command.m_targetBlend3;
    return {};
}

void QQuick3DShaderUtilsPipelineStateOverride::setTargetBlend3(const QQuick3DRenderPassTargetBlend &newTargetBlend3)
{
    if (command.m_targetBlend3 && QQuick3DRenderPassTargetBlend(*command.m_targetBlend3) == newTargetBlend3)
        return;
    command.m_targetBlend3 = newTargetBlend3.toRhiTargetBlend();
    emit targetBlend3Changed();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetTargetBlend3()
{
    command.m_targetBlend3.reset();
    emit targetBlend3Changed();
}

QQuick3DRenderPassTargetBlend QQuick3DShaderUtilsPipelineStateOverride::targetBlend4() const
{
    if (command.m_targetBlend4)
        return *command.m_targetBlend4;
    return {};
}

void QQuick3DShaderUtilsPipelineStateOverride::setTargetBlend4(const QQuick3DRenderPassTargetBlend &newTargetBlend4)
{
    if (command.m_targetBlend4 && QQuick3DRenderPassTargetBlend(*command.m_targetBlend4) == newTargetBlend4)
        return;
    command.m_targetBlend4 = newTargetBlend4.toRhiTargetBlend();
    emit targetBlend4Changed();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetTargetBlend4()
{
    command.m_targetBlend4.reset();
    emit targetBlend4Changed();
}

QQuick3DRenderPassTargetBlend QQuick3DShaderUtilsPipelineStateOverride::targetBlend5() const
{
    if (command.m_targetBlend5)
        return *command.m_targetBlend5;
    return {};
}

void QQuick3DShaderUtilsPipelineStateOverride::setTargetBlend5(const QQuick3DRenderPassTargetBlend &newTargetBlend5)
{
    if (command.m_targetBlend5 && QQuick3DRenderPassTargetBlend(*command.m_targetBlend5) == newTargetBlend5)
        return;
    command.m_targetBlend5 = newTargetBlend5.toRhiTargetBlend();
    emit targetBlend5Changed();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetTargetBlend5()
{
    command.m_targetBlend5.reset();
    emit targetBlend5Changed();
}

QQuick3DRenderPassTargetBlend QQuick3DShaderUtilsPipelineStateOverride::targetBlend6() const
{
    if (command.m_targetBlend6)
        return *command.m_targetBlend6;
    return {};
}

void QQuick3DShaderUtilsPipelineStateOverride::setTargetBlend6(const QQuick3DRenderPassTargetBlend &newTargetBlend6)
{
    if (command.m_targetBlend6 && QQuick3DRenderPassTargetBlend(*command.m_targetBlend6) == newTargetBlend6)
        return;
    command.m_targetBlend6 = newTargetBlend6.toRhiTargetBlend();
    emit targetBlend6Changed();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetTargetBlend6()
{
    command.m_targetBlend6.reset();
    emit targetBlend6Changed();
}

QQuick3DRenderPassTargetBlend QQuick3DShaderUtilsPipelineStateOverride::targetBlend7() const
{
    if (command.m_targetBlend7)
        return *command.m_targetBlend7;
    return {};
}

void QQuick3DShaderUtilsPipelineStateOverride::setTargetBlend7(const QQuick3DRenderPassTargetBlend &newTargetBlend7)
{
    if (command.m_targetBlend7 && QQuick3DRenderPassTargetBlend(*command.m_targetBlend7) == newTargetBlend7)
        return;
    command.m_targetBlend7 = newTargetBlend7.toRhiTargetBlend();
    emit targetBlend7Changed();
}

void QQuick3DShaderUtilsPipelineStateOverride::resetTargetBlend7()
{
    command.m_targetBlend7.reset();
    emit targetBlend7Changed();
}

/*!
    \qmltype RenderPassTexture
    \inherits Command
    \inqmlmodule QtQuick3D
    \brief Defines a texture to be used as a render target in a \l {RenderPass}{pass}.
    \since 6.11

    The RenderPassTexture type is used to specify a texture that will be used
    as a render target in a \l RenderPass. You can define the format of the
    texture using the \c format property.

    Once defined, the texture can be attached as a color or depth attachment. The texture will
    be automatically created and managed by the rendering system.

    \sa ColorAttachment, DepthTextureAttachment
*/

/*!
    \qmlproperty enumeration RenderPassTexture::format
    Sets the format of the render target texture.

    Available formats are:

    \value RenderPassTexture.Unknown
    \value RenderPassTexture.RGBA8
    \value RenderPassTexture.RGBA16F
    \value RenderPassTexture.RGBA32F
    \value RenderPassTexture.R8
    \value RenderPassTexture.R16
    \value RenderPassTexture.R16F
    \value RenderPassTexture.R32F
    \value RenderPassTexture.Depth16
    \value RenderPassTexture.Depth24
    \value RenderPassTexture.Depth32
    \value RenderPassTexture.Depth24Stencil8
*/

QQuick3DShaderUtilsRenderPassTexture::TextureFormat QQuick3DShaderUtilsRenderPassTexture::format() const
{
    return fromRenderTextureFormat(command->format());
}

QQuick3DShaderUtilsRenderPassTexture::~QQuick3DShaderUtilsRenderPassTexture()
{

}

void QQuick3DShaderUtilsRenderPassTexture::setFormat(TextureFormat newFormat)
{
    if (!command)
        command = std::make_shared<QSSGAllocateTexture>();
    command->setFormat(asRenderTextureFormat(newFormat));
}

QSSGRenderTextureFormat QQuick3DShaderUtilsRenderPassTexture::asRenderTextureFormat(TextureFormat fmt)
{
    switch (fmt) {
    case TextureFormat::Unknown: return QSSGRenderTextureFormat::Unknown;
    case TextureFormat::RGBA8: return QSSGRenderTextureFormat::RGBA8;
    case TextureFormat::RGBA16F: return QSSGRenderTextureFormat::RGBA16F;
    case TextureFormat::RGBA32F: return QSSGRenderTextureFormat::RGBA32F;
    case TextureFormat::R8: return QSSGRenderTextureFormat::R8;
    case TextureFormat::R16: return QSSGRenderTextureFormat::R16;
    case TextureFormat::R16F: return QSSGRenderTextureFormat::R16F;
    case TextureFormat::R32F: return QSSGRenderTextureFormat::R32F;
    case TextureFormat::Depth16: return QSSGRenderTextureFormat::Depth16;
    case TextureFormat::Depth24: return QSSGRenderTextureFormat::Depth24;
    case TextureFormat::Depth32: return QSSGRenderTextureFormat::Depth32;
    case TextureFormat::Depth24Stencil8: return QSSGRenderTextureFormat::Depth24Stencil8;
    default:
        break;
    }
    return QSSGRenderTextureFormat::Unknown;
}

QQuick3DShaderUtilsRenderPassTexture::TextureFormat QQuick3DShaderUtilsRenderPassTexture::fromRenderTextureFormat(QSSGRenderTextureFormat fmt)
{
    switch (fmt.format) {
    case QSSGRenderTextureFormat::Unknown: return TextureFormat::Unknown;
    case QSSGRenderTextureFormat::RGBA8: return TextureFormat::RGBA8;
    case QSSGRenderTextureFormat::RGBA16F: return TextureFormat::RGBA16F;
    case QSSGRenderTextureFormat::RGBA32F: return TextureFormat::RGBA32F;
    case QSSGRenderTextureFormat::R8: return TextureFormat::R8;
    case QSSGRenderTextureFormat::R16: return TextureFormat::R16;
    case QSSGRenderTextureFormat::R16F: return TextureFormat::R16F;
    case QSSGRenderTextureFormat::R32F: return TextureFormat::R32F;
    case QSSGRenderTextureFormat::Depth16: return TextureFormat::Depth16;
    case QSSGRenderTextureFormat::Depth24: return TextureFormat::Depth24;
    case QSSGRenderTextureFormat::Depth32: return TextureFormat::Depth32;
    case QSSGRenderTextureFormat::Depth24Stencil8: return TextureFormat::Depth24Stencil8;
    default:
        break;
    }
    return TextureFormat::Unknown;
}

/*!
    \qmltype ColorAttachment
    \inherits Command
    \inqmlmodule QtQuick3D
    \brief Defines a color attachment for a \l {RenderPass}{pass}.
    \since 6.11

    The ColorAttachment type is used to specify a color attachment for a \l RenderPass.
    The \l name property is used to identify the attachment within the render pass.
    If the \l {RenderPass.AugmentMaterial}{AugmentMaterial} mode is used, the name will be
    exposed as an output wiht \c name in the fragment shader.

    \sa RenderPassTexture

    \qml
    RenderPass {
        // Define a render target texture
        RenderPassTexture {
            id: colorTexture
            format: RenderPassTexture.RGBA16F
        }

        commands: [
            // Define a color attachment using the texture
            ColorAttachment {
                name: "color0"
                target: colorTexture
            }
        ]
    }
    \endqml
*/

QQuick3DShaderUtilsRenderPassColorAttachment::~QQuick3DShaderUtilsRenderPassColorAttachment()
{

}

QByteArray QQuick3DShaderUtilsRenderPassColorAttachment::name() const
{
    return m_name;
}

void QQuick3DShaderUtilsRenderPassColorAttachment::setName(const QByteArray &newName)
{
    m_name = newName;
}

QSSGCommand *QQuick3DShaderUtilsRenderPassColorAttachment::cloneCommand()
{
    if (target) {
        QSSGColorAttachment *cmd = new QSSGColorAttachment(m_name);
        cmd->m_textureCmd = target->command;
        return cmd;
    }

    return nullptr;
}

QQuick3DPropertyChangedTracker::~QQuick3DPropertyChangedTracker()
{

}

void QQuick3DPropertyChangedTracker::extractProperties(UniformPropertyList &outUniforms)
{
    // Ensure we start with a clean list
    outUniforms.clear();

    auto metaObject = m_owner->metaObject();

    // Properties -> uniforms
    const int propCount = metaObject->propertyCount();
    int propOffset = metaObject->propertyOffset();

    // Classes can have multilayered inheritance structure, so find the actual propOffset by
    // walking up the inheritance chain.
    const QMetaObject *superClass = metaObject->superClass();
    while (superClass && qstrcmp(superClass->className(), m_superClassName) != 0)  {
        propOffset = superClass->propertyOffset();
        superClass = superClass->superClass();
    }

    static auto getSamplerHint = [](const QQuick3DTexture &texture) {
        if (auto *po = QQuick3DObjectPrivate::get(&texture)) {
            if (po->type == QQuick3DObjectPrivate::Type::TextureProvider) {
                auto textureProvider = static_cast<QQuick3DTextureProviderExtension *>(texture.textureProvider());
                switch (textureProvider->samplerHint()) {
                case QQuick3DTextureProviderExtension::SamplerHint::Sampler2D:
                    return QSSGRenderSamplerType::Sampler2D;
                case QQuick3DTextureProviderExtension::SamplerHint::Sampler2DArray:
                    return QSSGRenderSamplerType::Sampler2DArray;
                case QQuick3DTextureProviderExtension::SamplerHint::Sampler3D:
                    return QSSGRenderSamplerType::Sampler3D;
                case QQuick3DTextureProviderExtension::SamplerHint::SamplerCube:
                    return QSSGRenderSamplerType::SamplerCube;
                case QQuick3DTextureProviderExtension::SamplerHint::SamplerCubeArray:
                    return QSSGRenderSamplerType::SamplerCubeArray;
                case QQuick3DTextureProviderExtension::SamplerHint::SamplerBuffer:
                    return QSSGRenderSamplerType::SamplerBuffer;
                }
            } else if (po->type == QQuick3DObjectPrivate::Type::ImageCube) {
                return QSSGRenderSamplerType::SamplerCube;
            } else if (texture.textureData() && texture.textureData()->depth() > 0) {
                return QSSGRenderSamplerType::Sampler3D;
            }
        }

        return QSSGRenderSamplerType::Sampler2D;
    };

    const auto addTextureToUniforms = [&](const char *name, QQuick3DTexture *texture, int propertyIndex) {
        QSSGRenderImage *ri = static_cast<QSSGRenderImage *>(QQuick3DObjectPrivate::get(texture)->spatialNode);
        auto samplerName = QSSGBaseTypeHelpers::toString(getSamplerHint(*texture));
        outUniforms.emplace_back(name, samplerName, QVariant::fromValue(ri), QSSGRenderShaderValue::Texture, propertyIndex);
    };

    // The TextureInput type needs extra watchers for its properties...
    const auto addTextureInputWatchers = [&](QMetaProperty property, QQuick3DShaderUtilsTextureInput *textureInput) {
        QObject::connect(textureInput, &QQuick3DShaderUtilsTextureInput::enabledChanged, m_owner, [this, property, textureInput](){ addPropertyWatcher(property, DirtyPropertyHint::Reference, textureInput); }, Qt::UniqueConnection);
        QObject::connect(textureInput, &QQuick3DShaderUtilsTextureInput::textureChanged, m_owner, [this, property, textureInput](){ addPropertyWatcher(property, DirtyPropertyHint::Reference, textureInput); }, Qt::UniqueConnection);
        if (auto *texture = textureInput->texture())
            addTextureToUniforms(property.name(), texture, property.propertyIndex());
    };

    for (int i = propOffset; i != propCount; ++i) {
        const QMetaProperty property = metaObject->property(i);
        if (Q_UNLIKELY(!property.isValid()))
            continue;

        const char *name = property.name();
        QMetaType propType = property.metaType();
        QVariant propValue = property.read(m_owner);
        if (propType == QMetaType(QMetaType::QVariant))
            propType = propValue.metaType();

        const auto type = QSSGShaderUtils::uniformType(propType);
        if (type != QSSGRenderShaderValue::Unknown) {
            outUniforms.emplace_back(name, QSSGShaderUtils::uniformTypeName(propType),
                                     propValue, QSSGShaderUtils::uniformType(propType), i);
            addPropertyWatcher(property, DirtyPropertyHint::Value);
        } else {
            if (propType.id() >= QMetaType::User) {
                if (propType.id() == qMetaTypeId<QQuick3DTexture *>()) {
                    if (QQuick3DTexture *texture = property.read(m_owner).value<QQuick3DTexture *>()) {
                        addTextureToUniforms(name, texture, i);
                        addPropertyWatcher(property, DirtyPropertyHint::Reference, texture);
                    }
                } else if (propType.id() == qMetaTypeId<QQuick3DShaderUtilsTextureInput *>()) { // For compatibility, also check for texture input types
                    if (QQuick3DShaderUtilsTextureInput *textureInput = property.read(m_owner).value<QQuick3DShaderUtilsTextureInput *>(); textureInput && textureInput->texture()) {
                        addTextureInputWatchers(property, textureInput);
                        addPropertyWatcher(property, DirtyPropertyHint::Reference, textureInput);
                    }
                }
            } else if (propType == QMetaType(QMetaType::QObjectStar)) {
                if (QQuick3DTexture *texture = qobject_cast<QQuick3DTexture *>(propValue.value<QObject *>())) {
                    addTextureToUniforms(name, texture, i);
                    addPropertyWatcher(property, DirtyPropertyHint::Reference, texture);
                } else if (QQuick3DShaderUtilsTextureInput *textureInput = qobject_cast<QQuick3DShaderUtilsTextureInput *>(propValue.value<QObject *>()); textureInput && textureInput->texture()) {
                    addTextureInputWatchers(property, textureInput);
                    addPropertyWatcher(property, DirtyPropertyHint::Reference, textureInput);
                }
            }
        }
    }
}

void QQuick3DPropertyChangedTracker::addPropertyWatcher(QMetaProperty property, DirtyPropertyHint hint, QQuick3DObject *object)
{
    if (property.isValid() && property.hasNotifySignal()) {
        // Check if we're already watching this property.
        const auto pid = property.propertyIndex();
        Q_ASSERT(pid != -1);
        auto it = std::find_if(m_trackedProperties.begin(), m_trackedProperties.end(), [pid](const Tracked &tp) { return tp.pid == pid; });
        const bool found = (it != m_trackedProperties.end());
        QQuick3DObject *oldObj = nullptr;
        if (!found) {
            QQuick3DPropertyWatcher *watcher = new QQuick3DPropertyWatcher(this, property);
            m_trackedProperties.push_back({watcher, object, pid});
            it = std::prev(m_trackedProperties.end());
        } else {
            oldObj = it->object;
            it->object = object;
        }

        if (hint == DirtyPropertyHint::Reference) {
            const auto &sm = QQuick3DObjectPrivate::get(m_owner)->sceneManager;

            // First check if the object changed
            const bool changed = (oldObj != object);

            // Deref old object
            if (changed && oldObj) {
                QQuick3DObjectPrivate::get(oldObj)->derefSceneManager();
                QObject::disconnect(oldObj, &QObject::destroyed, m_owner, nullptr);
            }

            // Ref new object
            if (changed && object) {
                QQuick3DObjectPrivate::get(object)->refSceneManager(*sm);
                QObject::connect(object, &QObject::destroyed, m_owner, [this, property](QObject *obj) {
                    Q_UNUSED(obj);
                    addPropertyWatcher(property, DirtyPropertyHint::Reference, nullptr);
                });
            }
        }

        markTrackedPropertyDirty(property, hint);
    }
}

void QQuick3DPropertyChangedTracker::markTrackedPropertyDirty(QMetaProperty property, DirtyPropertyHint hint)
{
    Q_UNUSED(property);
    Q_UNUSED(hint);
    QSSG_CHECK_X(false, "QQuick3DPropertyChangedTracker::onPropertyDirty implementation missing");
}

QQuick3DPropertyWatcher::QQuick3DPropertyWatcher(QQuick3DPropertyChangedTracker *tracker, QMetaProperty property)
    : m_tracker(tracker)
    , m_property(property)
{
    Q_ASSERT(tracker != nullptr);
    Q_ASSERT(property.isValid() && property.hasNotifySignal());

    const bool isPointerType = (property.metaType().flags().testFlag(QMetaType::IsPointer));

    if (!isPointerType) {
        // Value change notification
        const auto idx = staticMetaObject.indexOfSlot("onValuePropertyChanged()");
        if (QSSG_GUARD_X(idx != -1, "Method not found!")) {
            auto onPropertyChangedMethod = staticMetaObject.method(idx);
            connect(m_tracker->m_owner, property.notifySignal(), this, onPropertyChangedMethod);
        }
    } else {
        // Pointer value change notification
        const auto idx = staticMetaObject.indexOfSlot("onPointerPropertyChanged()");
        if (QSSG_GUARD_X(idx != -1, "Method not found!")) {
            auto onPointerPropertyChangedMethod = staticMetaObject.method(idx);
            connect(m_tracker->m_owner, property.notifySignal(), this, onPointerPropertyChangedMethod);
        }
    }
}

void QQuick3DPropertyWatcher::onValuePropertyChanged()
{
    m_tracker->markTrackedPropertyDirty(m_property, QQuick3DPropertyChangedTracker::DirtyPropertyHint::Value);
}

void QQuick3DPropertyWatcher::onPointerPropertyChanged()
{
    m_tracker->markTrackedPropertyDirty(m_property, QQuick3DPropertyChangedTracker::DirtyPropertyHint::Reference);;
}

/*!
    \qmltype AddDefine
    \inherits Command
    \inqmlmodule QtQuick3D
    \brief Adds a preprocessor define to the shader compilation for a \l {RenderPass}{pass}.
    \since 6.11

    The AddDefine type is used to specify a preprocessor define that will be
    added to the shader compilation process for a \l RenderPass. This allows
    you to customize the shader behavior by defining specific macros.
*/

QQuick3DShaderUtilsRenderPassAddDefine::QQuick3DShaderUtilsRenderPassAddDefine()
{

}

QQuick3DShaderUtilsRenderPassAddDefine::~QQuick3DShaderUtilsRenderPassAddDefine() = default;

QSSGCommand *QQuick3DShaderUtilsRenderPassAddDefine::cloneCommand() {
    QSSGAddShaderDefine *cmd = new QSSGAddShaderDefine(command);
    return cmd;
}

/*!
    \qmltype DepthTextureAttachment
    \inherits Command
    \inqmlmodule QtQuick3D
    \brief Defines a depth texture attachment for a \l {RenderPass}{pass}.
    \since 6.11

    The DepthTextureAttachment type is used to specify a depth texture
    that will be used as a depth attachment in a \l RenderPass. The texture
    will be automatically created and managed by the rendering system.

    \sa RenderPassTexture
*/

QQuick3DShaderUtilsRenderPassDepthTextureAttachment::~QQuick3DShaderUtilsRenderPassDepthTextureAttachment()
{

}

QSSGCommand *QQuick3DShaderUtilsRenderPassDepthTextureAttachment::cloneCommand()
{
    if (target) {
        QSSGDepthTextureAttachment *cmd = new QSSGDepthTextureAttachment(QByteArrayLiteral("__depth__"));
        cmd->m_textureCmd = target->command;
        return cmd;
    }

    return nullptr;
}

QQuick3DShaderUtilsRenderPassDepthStencilAttachment::~QQuick3DShaderUtilsRenderPassDepthStencilAttachment()
{

}

QSSGCommand *QQuick3DShaderUtilsRenderPassDepthStencilAttachment::cloneCommand()
{
    QSSGDepthStencilAttachment *cmd = new QSSGDepthStencilAttachment;
    return cmd;
}

QT_END_NAMESPACE