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sdrangel/sdrgui/gui/glshadercolors.h
2022-06-19 14:16:45 +01:00

66 lines
3.3 KiB
C++

///////////////////////////////////////////////////////////////////////////////////
// Copyright (C) 2019 F4EXB //
// written by Edouard Griffiths //
// //
// Inspired by: //
// https://en.wikibooks.org/wiki/OpenGL_Programming/Modern_OpenGL_Tutorial_03 // //
// //
// This program is free software; you can redistribute it and/or modify //
// it under the terms of the GNU General Public License as published by //
// the Free Software Foundation as version 3 of the License, or //
// (at your option) any later version. //
// //
// This program is distributed in the hope that it will be useful, //
// but WITHOUT ANY WARRANTY; without even the implied warranty of //
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
// GNU General Public License V3 for more details. //
// //
// You should have received a copy of the GNU General Public License //
// along with this program. If not, see <http://www.gnu.org/licenses/>. //
///////////////////////////////////////////////////////////////////////////////////
#ifndef INCLUDE_GUI_GLSHADERCOLORS_H_
#define INCLUDE_GUI_GLSHADERCOLORS_H_
#include <QString>
#include <QOpenGLFunctions>
#include <QOpenGLVertexArrayObject>
#include <QOpenGLBuffer>
#include "export.h"
class QOpenGLShaderProgram;
class QMatrix4x4;
class QVector4D;
class SDRGUI_API GLShaderColors
{
public:
GLShaderColors();
~GLShaderColors();
void initializeGL(int majorVersion, int minorVersion);
void drawPoints(const QMatrix4x4& transformMatrix, GLfloat *vertices, GLfloat *colors, GLfloat alpha, int nbVertices);
void drawPolyline(const QMatrix4x4& transformMatrix, GLfloat *vertices, GLfloat *colors, GLfloat alpha, int nbVertices);
void drawSegments(const QMatrix4x4& transformMatrix, GLfloat *vertices, GLfloat *colors, GLfloat alpha, int nbVertices);
void drawContour(const QMatrix4x4& transformMatrix, GLfloat *vertices, GLfloat *colors, GLfloat alpha, int nbVertices);
void drawSurface(const QMatrix4x4& transformMatrix, GLfloat *vertices, GLfloat *colors, GLfloat alpha, int nbVertices);
void cleanup();
private:
void draw(unsigned int mode, const QMatrix4x4& transformMatrix, GLfloat *vertices, GLfloat *colors, GLfloat alpha, int nbVertices);
QOpenGLShaderProgram *m_program;
QOpenGLVertexArrayObject *m_vao;
QOpenGLBuffer *m_verticesBuf;
QOpenGLBuffer *m_colorBuf;
int m_matrixLoc;
int m_alphaLoc;
static const QString m_vertexShaderSourceSimple2;
static const QString m_vertexShaderSourceSimple;
static const QString m_fragmentShaderSourceColored2;
static const QString m_fragmentShaderSourceColored;
};
#endif /* INCLUDE_GUI_GLSHADERCOLORS_H_ */