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qsgvivantevideomaterialshader.cpp 4.07 KiB
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/****************************************************************************
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**
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** Copyright (C) 2014 Pelagicore AG
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia.  For licensing terms and
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** conditions see http://qt.digia.com/licensing.  For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights.  These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "qsgvivantevideomaterialshader.h"
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#include "qsgvivantevideonode.h"
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#include "qsgvivantevideomaterial.h"
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void QSGVivanteVideoMaterialShader::updateState(const RenderState &state,
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                                                QSGMaterial *newMaterial,
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                                                QSGMaterial *oldMaterial)
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{
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    Q_UNUSED(oldMaterial);
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    QSGVivanteVideoMaterial *mat = static_cast<QSGVivanteVideoMaterial *>(newMaterial);
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    program()->setUniformValue(mIdTexture, 0);
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    mat->bind();
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    if (state.isOpacityDirty()) {
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        mat->setOpacity(state.opacity());
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        program()->setUniformValue(mIdOpacity, state.opacity());
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    }
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    if (state.isMatrixDirty())
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        program()->setUniformValue(mIdMatrix, state.combinedMatrix());
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}
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const char * const *QSGVivanteVideoMaterialShader::attributeNames() const {
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    static const char *names[] = {
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        "qt_VertexPosition",
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        "qt_VertexTexCoord",
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        0
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    };
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    return names;
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}
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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;" "" "varying highp vec2 qt_TexCoord;" "" "void main()" "{" " gl_FragColor = vec4(texture2D( texture, qt_TexCoord ).rgb, 1.0) * opacity;\n" "}"; return shader; } void QSGVivanteVideoMaterialShader::initialize() { mIdMatrix = program()->uniformLocation("qt_Matrix"); mIdTexture = program()->uniformLocation("texture"); mIdOpacity = program()->uniformLocation("opacity"); }