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/****************************************************************************
**
** Copyright (C) 2014 Pelagicore AG
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qsgvivantevideomaterialshader.h"
#include "qsgvivantevideonode.h"
#include "qsgvivantevideomaterial.h"
QSGVivanteVideoMaterialShader::QSGVivanteVideoMaterialShader() :
mUScale(1),
mVScale(1),
mNewUVScale(true)
{
}
void QSGVivanteVideoMaterialShader::updateState(const RenderState &state,
QSGMaterial *newMaterial,
QSGMaterial *oldMaterial)
{
Q_UNUSED(oldMaterial);
QSGVivanteVideoMaterial *mat = static_cast<QSGVivanteVideoMaterial *>(newMaterial);
program()->setUniformValue(mIdTexture, 0);
mat->bind();
if (state.isOpacityDirty()) {
mat->setOpacity(state.opacity());
program()->setUniformValue(mIdOpacity, state.opacity());
}
if (mNewUVScale) {
program()->setUniformValue(mIdUVScale, mUScale, mVScale);
mNewUVScale = false;
}
if (state.isMatrixDirty())
program()->setUniformValue(mIdMatrix, state.combinedMatrix());
}
const char * const *QSGVivanteVideoMaterialShader::attributeNames() const {
static const char *names[] = {
"qt_VertexPosition",
"qt_VertexTexCoord",
0
};
return names;
}
void QSGVivanteVideoMaterialShader::setUVScale(float uScale, float vScale)
{
mUScale = uScale;
mVScale = vScale;
mNewUVScale = true;
}
const char *QSGVivanteVideoMaterialShader::vertexShader() const {
static const char *shader =
"uniform highp mat4 qt_Matrix; \n"
"attribute highp vec4 qt_VertexPosition; \n"
"attribute highp vec2 qt_VertexTexCoord; \n"
"varying highp vec2 qt_TexCoord; \n"
"void main() { \n"
" qt_TexCoord = qt_VertexTexCoord; \n"
" gl_Position = qt_Matrix * qt_VertexPosition; \n"
"}";
return shader;
}
const char *QSGVivanteVideoMaterialShader::fragmentShader() const {
static const char *shader =
"uniform sampler2D texture;"
"uniform lowp float opacity;"
"uniform highp vec2 uvScale;"
""
"varying highp vec2 qt_TexCoord;"
""
"void main()"
"{"
" gl_FragColor = vec4(texture2D( texture, qt_TexCoord * uvScale ).rgb, 1.0) * opacity;\n"
"}";
return shader;
}
void QSGVivanteVideoMaterialShader::initialize() {
mIdMatrix = program()->uniformLocation("qt_Matrix");
mIdTexture = program()->uniformLocation("texture");
mIdOpacity = program()->uniformLocation("opacity");
mIdUVScale = program()->uniformLocation("uvScale");
}
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