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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+// 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.
+//
+
+/*
+Uniform Types in OpenGL ES 2.0
+==============================
+GL_FLOAT GLfloat GLfloat
+GL_FLOAT_VEC2 QGLVec2 GLfloat[2]
+GL_FLOAT_VEC3 QGLVec3 GLfloat[3]
+GL_FLOAT_VEC4 QGLVec4 GLfloat[4]
+GL_INT GLint GLint
+GL_INT_VEC2 QGLIVec2 GLint[2]
+GL_INT_VEC3 QGLIVec3 GLint[3]
+GL_INT_VEC4 QGLIVec4 GLint[4]
+GL_BOOL GLbool GLbool
+GL_BOOL_VEC2 QGLBVec2 GLbool[2]
+GL_BOOL_VEC3 QGLBVec3 GLbool[3]
+GL_BOOL_VEC4 QGLBVec4 GLbool[4]
+GL_FLOAT_MAT2 QGLMat2 GLfloat[2][2]
+GL_FLOAT_MAT3 QGLMat3 GLfloat[3][3]
+GL_FLOAT_MAT4 QGLMat4 GLfloat[4][4]
+GL_SAMPLER_2D QGLSampler2D GLuint
+GL_SAMPLER_CUBE QGLSamplerCube GLuint
+
+Additional Types in Desktop OpenGL 2.0
+======================================
+SAMPLER_1D,
+SAMPLER_3D,
+SAMPLER_1D_SHADOW,
+SAMPLER_2D_SHADOW.
+*/
+
+#include <QtOpenGL>
+
+
+typedef struct {
+ GLfloat a;
+ GLfloat b;
+} QGLVec2;
+
+typedef struct {
+ GLfloat a;
+ GLfloat b;
+ GLfloat c;
+} QGLVec3;
+
+typedef struct {
+ GLfloat a;
+ GLfloat b;
+ GLfloat c;
+ GLfloat d;
+} QGLVec4;
+
+
+class QGLShaderProgram;
+
+class QGLShaderPrivate;
+
+class QGLShader : QObject
+{
+ Q_OBJECT
+public:
+ enum ShaderType {VertexShader, FragmentShader};
+
+ QGLShader(ShaderType type, const QGLContext* ctx = 0);
+
+ GLuint id();
+ void clearSource();
+ void addSource(const QLatin1String& newSource);
+ bool compile();
+ bool isValid();
+ QString log();
+ const QGLContext* context(); //maybe make private with prog a friend?
+
+private:
+ QGLShaderPrivate* d_ptr;
+ Q_DECLARE_PRIVATE(QGLShader);
+
+/*
+public slots:
+ void cleanupGLContextRefs(const QGLContext *context);
+*/
+};
+
+
+enum QGLType {
+ QGLInvalidType = 0,
+ QGLFloatType = GL_FLOAT,
+ QGLVec2Type = GL_FLOAT_VEC2,
+ QGLVec3Type = GL_FLOAT_VEC3,
+ QGLVec4Type = GL_FLOAT_VEC4,
+ QGLIntType = GL_INT,
+ QGLIVec2Type = GL_INT_VEC2,
+ QGLIVec3Type = GL_INT_VEC3,
+ QGLIVec4Type = GL_INT_VEC4,
+ QGLBoolType = GL_BOOL,
+ QGLBVec2Type = GL_BOOL_VEC2,
+ QGLBVec3Type = GL_BOOL_VEC3,
+ QGLBVec4Type = GL_BOOL_VEC4,
+ QGLMat2Type = GL_FLOAT_MAT2,
+ QGLMat3Type = GL_FLOAT_MAT3,
+ QGLMat4Type = GL_FLOAT_MAT4,
+ QGLSampler2DType = GL_SAMPLER_2D,
+ QGLSamplerCubeType = GL_SAMPLER_CUBE
+};
+
+class QGLUniform
+{
+public:
+
+ QGLUniform(GLenum glType, GLint location, QGLContext* context)
+ : m_id(location), m_type(QGLType(glType)), ctx(context) {}
+
+ QGLUniform(); // Called by QMap when there's no match on the name
+
+ QGLType type() const {return m_type;}
+ GLuint id() const {return m_id;}
+
+ // Seems odd to be const, but it doesn't actually modify any of the
+ // class members, only the GL state!
+ const QGLUniform& operator=(const GLfloat&) const;
+
+ const QGLUniform& operator=(const QGLVec2&) const;
+ const QGLUniform& operator=(const QSizeF&) const;
+ const QGLUniform& operator=(const QPointF&) const;
+
+ const QGLUniform& operator=(const QGLVec3&) const;
+
+ const QGLUniform& operator=(const QGLVec4&) const;
+ const QGLUniform& operator=(const QColor&) const;
+
+ const QGLUniform& operator=(const GLfloat[2][2]) const;
+
+ const QGLUniform& operator=(const GLfloat[3][3]) const;
+ const QGLUniform& operator=(const QTransform&) const;
+
+ const QGLUniform& operator=(const GLfloat[4][4]) const;
+
+ const QGLUniform& operator=(const GLuint&) const; // sampler2d, specifying a texture unit
+
+
+protected:
+ GLuint m_id;
+ QGLType m_type;
+ QGLContext* ctx;
+};
+
+typedef QMap<QString, QGLUniform> QGLUniformList;
+typedef QMapIterator<QString, QGLUniform> QGLUniformListIterator;
+
+
+class QGLVertexAttribute
+{
+public:
+ QGLVertexAttribute(GLenum glType, GLuint location, QGLContext* context)
+ : m_id(location), m_type(QGLType(glType)), ctx(context) {}
+
+ QGLVertexAttribute(); // Called by QMap when there's no match on the name
+
+ QGLType type() const {return m_type;}
+ GLuint id() const {return m_id;}
+ void enable() const;
+ void disable() const;
+
+ const QGLVertexAttribute& operator=(const GLfloat* rhs) const;
+ const QGLVertexAttribute& operator=(const QGLVec3* rhs) const;
+
+protected:
+ GLuint m_id;
+ QGLType m_type;
+ QGLContext* ctx;
+};
+
+//TODO: Convert into setter overloads on QGLShaderProgram
+typedef QMap<QString, QGLVertexAttribute> QGLVertexAttributeList;
+typedef QMapIterator<QString, QGLVertexAttribute> QGLVertexAttributeListIterator;
+
+
+
+class QGLShaderProgramPrivate;
+
+class QGLShaderProgram : QObject
+{
+ Q_OBJECT
+public:
+ QGLShaderProgram(const QGLContext* ctx = 0);
+
+ const QGLUniformList & uniforms();
+ const QGLVertexAttributeList& vertexAttributes();
+
+ bool addShader(QGLShader* newShader);
+ bool removeShader(QGLShader* oldShader);
+ bool removeAllShaders();
+
+ bool link();
+ QString log();
+ bool isValid();
+ void use();
+
+ GLuint id();
+
+private:
+ QGLShaderProgramPrivate* d_ptr;
+ Q_DECLARE_PRIVATE(QGLShaderProgram);
+
+/*
+public slots:
+ void cleanupGLContextRefs(const QGLContext *context);
+*/
+};
+
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