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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc
** All rights reserved.
** For any questions to Digia, please use contact form at http://qt.digia.com
**
** This file is part of the QtDataVisualization module.
**
** Licensees holding valid Qt Enterprise licenses may use this file in
** accordance with the Qt Enterprise License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.
**
** If you have questions regarding the use of this file, please use
** contact form at http://qt.digia.com
**
****************************************************************************/
#include "shaderhelper_p.h"
#include <QOpenGLShader>
QT_DATAVISUALIZATION_BEGIN_NAMESPACE
void discardDebugMsgs(QtMsgType type, const QMessageLogContext &context, const QString &msg)
{
Q_UNUSED(type)
Q_UNUSED(context)
Q_UNUSED(msg)
// Used to discard warnings generated during shader test compilation
}
ShaderHelper::ShaderHelper(QObject *parent,
const QString &vertexShader,
const QString &fragmentShader,
const QString &texture,
const QString &depthTexture)
: m_caller(parent),
m_program(0),
m_vertexShaderFile(vertexShader),
m_fragmentShaderFile(fragmentShader),
m_textureFile(texture),
m_depthTextureFile(depthTexture)
{
}
ShaderHelper::~ShaderHelper()
{
delete m_program;
}
void ShaderHelper::setShaders(const QString &vertexShader,
const QString &fragmentShader)
{
m_vertexShaderFile = vertexShader;
m_fragmentShaderFile = fragmentShader;
}
void ShaderHelper::setTextures(const QString &texture,
const QString &depthTexture)
{
m_textureFile = texture;
m_depthTextureFile = depthTexture;
}
void ShaderHelper::initialize()
{
if (m_program)
delete m_program;
m_program = new QOpenGLShaderProgram(m_caller);
if (!m_program->addShaderFromSourceFile(QOpenGLShader::Vertex, m_vertexShaderFile))
qFatal("Compiling Vertex shader failed");
if (!m_program->addShaderFromSourceFile(QOpenGLShader::Fragment, m_fragmentShaderFile))
qFatal("Compiling Fragment shader failed");
m_program->link();
m_positionAttr = m_program->attributeLocation("vertexPosition_mdl");
m_normalAttr = m_program->attributeLocation("vertexNormal_mdl");
m_uvAttr = m_program->attributeLocation("vertexUV");
m_mvpMatrixUniform = m_program->uniformLocation("MVP");
m_viewMatrixUniform = m_program->uniformLocation("V");
m_modelMatrixUniform = m_program->uniformLocation("M");
m_invTransModelMatrixUniform = m_program->uniformLocation("itM");
m_depthMatrixUniform = m_program->uniformLocation("depthMVP");
m_lightPositionUniform = m_program->uniformLocation("lightPosition_wrld");
m_lightStrengthUniform = m_program->uniformLocation("lightStrength");
m_ambientStrengthUniform = m_program->uniformLocation("ambientStrength");
m_shadowQualityUniform = m_program->uniformLocation("shadowQuality");
m_colorUniform = m_program->uniformLocation("color_mdl");
m_textureUniform = m_program->uniformLocation("textureSampler");
m_shadowUniform = m_program->uniformLocation("shadowMap");
m_initialized = true;
}
bool ShaderHelper::testCompile()
{
bool result = true;
// Discard warnings, we only need the result
QtMessageHandler handler = qInstallMessageHandler(discardDebugMsgs);
if (m_program)
delete m_program;
m_program = new QOpenGLShaderProgram(m_caller);
if (!m_program->addShaderFromSourceFile(QOpenGLShader::Vertex, m_vertexShaderFile))
result = false;
if (!m_program->addShaderFromSourceFile(QOpenGLShader::Fragment, m_fragmentShaderFile))
result = false;
// Restore actual message handler
qInstallMessageHandler(handler);
return result;
}
void ShaderHelper::bind()
{
m_program->bind();
}
void ShaderHelper::release()
{
m_program->release();
}
void ShaderHelper::setUniformValue(GLuint uniform, const QVector3D &value)
{
m_program->setUniformValue(uniform, value);
}
void ShaderHelper::setUniformValue(GLuint uniform, const QVector4D &value)
{
m_program->setUniformValue(uniform, value);
}
void ShaderHelper::setUniformValue(GLuint uniform, const QMatrix4x4 &value)
{
m_program->setUniformValue(uniform, value);
}
void ShaderHelper::setUniformValue(GLuint uniform, GLfloat value)
{
m_program->setUniformValue(uniform, value);
}
void ShaderHelper::setUniformValue(GLuint uniform, GLint value)
{
m_program->setUniformValue(uniform, value);
}
GLuint ShaderHelper::MVP()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_mvpMatrixUniform;
}
GLuint ShaderHelper::view()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_viewMatrixUniform;
}
GLuint ShaderHelper::model()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_modelMatrixUniform;
}
GLuint ShaderHelper::nModel()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_invTransModelMatrixUniform;
}
GLuint ShaderHelper::depth()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_depthMatrixUniform;
}
GLuint ShaderHelper::lightP()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_lightPositionUniform;
}
GLuint ShaderHelper::lightS()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_lightStrengthUniform;
}
GLuint ShaderHelper::ambientS()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_ambientStrengthUniform;
}
GLuint ShaderHelper::shadowQ()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_shadowQualityUniform;
}
GLuint ShaderHelper::color()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_colorUniform;
}
GLuint ShaderHelper::texture()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_textureUniform;
}
GLuint ShaderHelper::shadow()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_shadowUniform;
}
GLuint ShaderHelper::posAtt()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_positionAttr;
}
GLuint ShaderHelper::uvAtt()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_uvAttr;
}
GLuint ShaderHelper::normalAtt()
{
if (!m_initialized)
qFatal("Shader not initialized");
return m_normalAttr;
}
QT_DATAVISUALIZATION_END_NAMESPACE
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