qsgmaterialshader_p.h

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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#ifndef QSGMATERIALSHADER_P_H
#define QSGMATERIALSHADER_P_H
 
//
//  W A R N I N G
//  -------------
//
// This file is not part of the Qt API.  It exists purely as an
// implementation detail.  This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
 
#include <private/qtquickglobal_p.h>
#include "qsgmaterialshader.h"
#include "qsgmaterial.h"
#include <rhi/qrhi.h>
#include <rhi/qshader.h>
 
QT_BEGIN_NAMESPACE
 
class QRhiSampler;
 
class Q_QUICK_PRIVATE_EXPORT QSGMaterialShaderPrivate
{
public:
    Q_DECLARE_PUBLIC(QSGMaterialShader)
 
    QSGMaterialShaderPrivate(QSGMaterialShader *q) : q_ptr(q) { }
    static QSGMaterialShaderPrivate *get(QSGMaterialShader *s) { return s->d_func(); }
    static const QSGMaterialShaderPrivate *get(const QSGMaterialShader *s) { return s->d_func(); }
 
    void clearCachedRendererData();
    void prepare(QShader::Variant vertexShaderVariant);
 
    QShader shader(QShader::Stage stage) const { return shaders[stage].shader; }
 
    static QShader loadShader(const QString &filename);
 
    QSGMaterialShader *q_ptr;
    QHash<QShader::Stage, QString> shaderFileNames;
    QSGMaterialShader::Flags flags;
 
    struct ShaderStageData {
        ShaderStageData() { } // so shader.isValid() == false
        ShaderStageData(const QShader &shader) : shader(shader) { }
        QShader shader;
        QShader::Variant shaderVariant = QShader::StandardShader;
        QVector<int> vertexInputLocations; // excluding rewriter-inserted ones
        int qt_order_attrib_location = -1; // rewriter-inserted
    };
    QHash<QShader::Stage, ShaderStageData> shaders;
 
    static const int MAX_SHADER_RESOURCE_BINDINGS = 32;
 
    int ubufBinding = -1;
    int ubufSize = 0;
    QRhiShaderResourceBinding::StageFlags ubufStages;
    QRhiShaderResourceBinding::StageFlags combinedImageSamplerBindings[MAX_SHADER_RESOURCE_BINDINGS];
    int combinedImageSamplerCount[MAX_SHADER_RESOURCE_BINDINGS];
 
    ShaderStageData *vertexShader = nullptr;
    ShaderStageData *fragmentShader = nullptr;
 
    QByteArray masterUniformData;
 
    QVarLengthArray<QSGTexture *, 4> textureBindingTable[MAX_SHADER_RESOURCE_BINDINGS];
    QVarLengthArray<QRhiSampler *, 4> samplerBindingTable[MAX_SHADER_RESOURCE_BINDINGS];
};
 
Q_DECLARE_TYPEINFO(QSGMaterialShaderPrivate::ShaderStageData, Q_RELOCATABLE_TYPE);
 
QT_END_NAMESPACE
 
#endif