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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://www.qtsoftware.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QGLSHADERPROGRAM_H
#define QGLSHADERPROGRAM_H

#include <QtOpenGL/qgl.h>
#include <QtGui/qvector2d.h>
#include <QtGui/qvector3d.h>
#include <QtGui/qvector4d.h>
#include <QtGui/qmatrix4x4.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(OpenGL)

#if !defined(QT_OPENGL_ES_1_CL) && !defined(QT_OPENGL_ES_1)

class QGLShaderProgram;
class QGLShaderPrivate;

class Q_OPENGL_EXPORT QGLShader : public QObject
{
    Q_OBJECT
public:
    enum ShaderType
    {
        VertexShader,
        FragmentShader,
        PartialVertexShader,
        PartialFragmentShader
    };

    explicit QGLShader(QGLShader::ShaderType type, QObject *parent = 0);
    explicit QGLShader(const QString& fileName, QObject *parent = 0);
    QGLShader(const QString& fileName, QGLShader::ShaderType type, QObject *parent = 0);
    QGLShader(QGLShader::ShaderType type, const QGLContext *context, QObject *parent = 0);
    QGLShader(const QString& fileName, const QGLContext *context, QObject *parent = 0);
    QGLShader(const QString& fileName, QGLShader::ShaderType type, const QGLContext *context, QObject *parent = 0);
    virtual ~QGLShader();

    QGLShader::ShaderType shaderType() const;

    bool compile(const char *source);
    bool compile(const QByteArray& source);
    bool compile(const QString& source);
    bool compileFile(const QString& fileName);

    bool setShaderBinary(GLenum format, const void *binary, int length);
    bool setShaderBinary(QGLShader& otherShader, GLenum format, const void *binary, int length);

    static QList<GLenum> shaderBinaryFormats();

    QByteArray sourceCode() const;

    bool isCompiled() const;
    QString log() const;

    GLuint shaderId() const;

private:
    QGLShaderPrivate *d;

    friend class QGLShaderProgram;

    Q_DISABLE_COPY(QGLShader)
};

class QGLShaderProgramPrivate;

class Q_OPENGL_EXPORT QGLShaderProgram : public QObject
{
    Q_OBJECT
public:
    explicit QGLShaderProgram(QObject *parent = 0);
    explicit QGLShaderProgram(const QGLContext *context, QObject *parent = 0);
    virtual ~QGLShaderProgram();

    bool addShader(QGLShader *shader);
    void removeShader(QGLShader *shader);
    QList<QGLShader *> shaders() const;

    bool addShader(QGLShader::ShaderType type, const char *source);
    bool addShader(QGLShader::ShaderType type, const QByteArray& source);
    bool addShader(QGLShader::ShaderType type, const QString& source);

    void removeAllShaders();

    QByteArray programBinary(int *format) const;
    bool setProgramBinary(int format, const QByteArray& binary);
    static QList<int> programBinaryFormats();

    virtual bool link();
    bool isLinked() const;
    QString log() const;

    bool enable();
    static void disable();

    GLuint programId() const;

    void bindAttributeLocation(const char *name, int location);
    void bindAttributeLocation(const QByteArray& name, int location);
    void bindAttributeLocation(const QString& name, int location);

    int attributeLocation(const char *name) const;
    int attributeLocation(const QByteArray& name) const;
    int attributeLocation(const QString& name) const;

    void setAttributeValue(int location, GLfloat value);
    void setAttributeValue(int location, GLfloat x, GLfloat y);
    void setAttributeValue(int location, GLfloat x, GLfloat y, GLfloat z);
    void setAttributeValue(int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
    void setAttributeValue(int location, const QVector2D& value);
    void setAttributeValue(int location, const QVector3D& value);
    void setAttributeValue(int location, const QVector4D& value);
    void setAttributeValue(int location, const QColor& value);
    void setAttributeValue(int location, const GLfloat *values, int columns, int rows);

    void setAttributeValue(const char *name, GLfloat value);
    void setAttributeValue(const char *name, GLfloat x, GLfloat y);
    void setAttributeValue(const char *name, GLfloat x, GLfloat y, GLfloat z);
    void setAttributeValue(const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
    void setAttributeValue(const char *name, const QVector2D& value);
    void setAttributeValue(const char *name, const QVector3D& value);
    void setAttributeValue(const char *name, const QVector4D& value);
    void setAttributeValue(const char *name, const QColor& value);
    void setAttributeValue(const char *name, const GLfloat *values, int columns, int rows);

    void setAttributeArray
        (int location, const GLfloat *values, int size, int stride = 0);
    void setAttributeArray
        (int location, const QVector2D *values, int stride = 0);
    void setAttributeArray
        (int location, const QVector3D *values, int stride = 0);
    void setAttributeArray
        (int location, const QVector4D *values, int stride = 0);
    void setAttributeArray
        (const char *name, const GLfloat *values, int size, int stride = 0);
    void setAttributeArray
        (const char *name, const QVector2D *values, int stride = 0);
    void setAttributeArray
        (const char *name, const QVector3D *values, int stride = 0);
    void setAttributeArray
        (const char *name, const QVector4D *values, int stride = 0);
    void disableAttributeArray(int location);
    void disableAttributeArray(const char *name);

    int uniformLocation(const char *name) const;
    int uniformLocation(const QByteArray& name) const;
    int uniformLocation(const QString& name) const;

    void setUniformValue(int location, GLfloat value);
    void setUniformValue(int location, GLint value);
    void setUniformValue(int location, GLuint value);
    void setUniformValue(int location, GLfloat x, GLfloat y);
    void setUniformValue(int location, GLfloat x, GLfloat y, GLfloat z);
    void setUniformValue(int location, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
    void setUniformValue(int location, const QVector2D& value);
    void setUniformValue(int location, const QVector3D& value);
    void setUniformValue(int location, const QVector4D& value);
    void setUniformValue(int location, const QColor& color);
    void setUniformValue(int location, const QPoint& point);
    void setUniformValue(int location, const QPointF& point);
    void setUniformValue(int location, const QSize& size);
    void setUniformValue(int location, const QSizeF& size);
    void setUniformValue(int location, const QMatrix2x2& value);
    void setUniformValue(int location, const QMatrix2x3& value);
    void setUniformValue(int location, const QMatrix2x4& value);
    void setUniformValue(int location, const QMatrix3x2& value);
    void setUniformValue(int location, const QMatrix3x3& value);
    void setUniformValue(int location, const QMatrix3x4& value);
    void setUniformValue(int location, const QMatrix4x2& value);
    void setUniformValue(int location, const QMatrix4x3& value);
    void setUniformValue(int location, const QMatrix4x4& value);
    void setUniformValue(int location, const GLfloat value[4][4]);
    void setUniformValue(int location, const QTransform& value);

    void setUniformValue(const char *name, GLfloat value);
    void setUniformValue(const char *name, GLint value);
    void setUniformValue(const char *name, GLuint value);
    void setUniformValue(const char *name, GLfloat x, GLfloat y);
    void setUniformValue(const char *name, GLfloat x, GLfloat y, GLfloat z);
    void setUniformValue(const char *name, GLfloat x, GLfloat y, GLfloat z, GLfloat w);
    void setUniformValue(const char *name, const QVector2D& value);
    void setUniformValue(const char *name, const QVector3D& value);
    void setUniformValue(const char *name, const QVector4D& value);
    void setUniformValue(const char *name, const QColor& color);
    void setUniformValue(const char *name, const QPoint& point);
    void setUniformValue(const char *name, const QPointF& point);
    void setUniformValue(const char *name, const QSize& size);
    void setUniformValue(const char *name, const QSizeF& size);
    void setUniformValue(const char *name, const QMatrix2x2& value);
    void setUniformValue(const char *name, const QMatrix2x3& value);
    void setUniformValue(const char *name, const QMatrix2x4& value);
    void setUniformValue(const char *name, const QMatrix3x2& value);
    void setUniformValue(const char *name, const QMatrix3x3& value);
    void setUniformValue(const char *name, const QMatrix3x4& value);
    void setUniformValue(const char *name, const QMatrix4x2& value);
    void setUniformValue(const char *name, const QMatrix4x3& value);
    void setUniformValue(const char *name, const QMatrix4x4& value);
    void setUniformValue(const char *name, const GLfloat value[4][4]);
    void setUniformValue(const char *name, const QTransform& value);

    void setUniformValueArray(int location, const GLfloat *values, int count, int size);
    void setUniformValueArray(int location, const GLint *values, int count);
    void setUniformValueArray(int location, const GLuint *values, int count);
    void setUniformValueArray(int location, const QVector2D *values, int count);
    void setUniformValueArray(int location, const QVector3D *values, int count);
    void setUniformValueArray(int location, const QVector4D *values, int count);
    void setUniformValueArray(int location, const QMatrix2x2 *values, int count);
    void setUniformValueArray(int location, const QMatrix2x3 *values, int count);
    void setUniformValueArray(int location, const QMatrix2x4 *values, int count);
    void setUniformValueArray(int location, const QMatrix3x2 *values, int count);
    void setUniformValueArray(int location, const QMatrix3x3 *values, int count);
    void setUniformValueArray(int location, const QMatrix3x4 *values, int count);
    void setUniformValueArray(int location, const QMatrix4x2 *values, int count);
    void setUniformValueArray(int location, const QMatrix4x3 *values, int count);
    void setUniformValueArray(int location, const QMatrix4x4 *values, int count);

    void setUniformValueArray(const char *name, const GLfloat *values, int count, int size);
    void setUniformValueArray(const char *name, const GLint *values, int count);
    void setUniformValueArray(const char *name, const GLuint *values, int count);
    void setUniformValueArray(const char *name, const QVector2D *values, int count);
    void setUniformValueArray(const char *name, const QVector3D *values, int count);
    void setUniformValueArray(const char *name, const QVector4D *values, int count);
    void setUniformValueArray(const char *name, const QMatrix2x2 *values, int count);
    void setUniformValueArray(const char *name, const QMatrix2x3 *values, int count);
    void setUniformValueArray(const char *name, const QMatrix2x4 *values, int count);
    void setUniformValueArray(const char *name, const QMatrix3x2 *values, int count);
    void setUniformValueArray(const char *name, const QMatrix3x3 *values, int count);
    void setUniformValueArray(const char *name, const QMatrix3x4 *values, int count);
    void setUniformValueArray(const char *name, const QMatrix4x2 *values, int count);
    void setUniformValueArray(const char *name, const QMatrix4x3 *values, int count);
    void setUniformValueArray(const char *name, const QMatrix4x4 *values, int count);

    static bool hasShaderPrograms(const QGLContext *context = 0);

private:
    QGLShaderProgramPrivate *d;

    Q_DISABLE_COPY(QGLShaderProgram)

    bool init();
};

#endif

QT_END_NAMESPACE

QT_END_HEADER

#endif