OGLShaderManager.cpp

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/*
 * Copyright (C) <2012-2024> <EDF-DTG> <FRANCE>
 * This file is part of Code_TYMPAN (R).
 * Code_TYMPAN (R) 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, either version 3 of the License, or
 * (at your option) any later version.
 * Code_TYMPAN (R) 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 for more details.
 * You should have received a copy of the GNU General Public License along
 * with Code_TYMPAN (R). If not, see <https://www.gnu.org/licenses/>.
 */
 
#include "gui/tools/OGLShaderManager.h"
#include <qopenglcontext.h>
#include <qopenglshaderprogram.h>
#include <QFile>
 
QMap<QOpenGLContextGroup*, OGLShaderManager*> OGLShaderManager::instances;
 
OGLShaderManager* OGLShaderManager::instance(QOpenGLContext* context)
{
    QOpenGLContextGroup* group = context->shareGroup();
 
    if (!instances.contains(group))
    {
        instances[group] = new OGLShaderManager(context);
    }
 
    return instances[group];
}
 
QOpenGLShaderProgram* OGLShaderManager::getShaderProgram(ShaderId shader)
{
    switch (shader)
    {
        case SimpleShader:
            return &simpleShader;
    }
 
    assert(false && "Should never be reachable");
}
 
OGLShaderManager::OGLShaderManager(QOpenGLContext* context)
{
    initializeShaders();
}
 
void OGLShaderManager::initializeShaders()
{
    // Simple shader
    simpleShader.addCacheableShaderFromSourceFile(QOpenGLShader::Vertex, ":/shaders/simple.vert");
    simpleShader.addCacheableShaderFromSourceFile(QOpenGLShader::Fragment, ":/shaders/simple.frag");
    simpleShader.link();
}