Warning, /frameworks/kdeclarative/src/qmlcontrols/graphicaleffects/preserveaspect.vert is written in an unsupported language. File is not indexed.

 /*
 SPDX-FileCopyrightText: 2021 Arjen Hiemstra <ahiemstra@heimr.nl>
 
 SPDX-License-Identifier: LGPL-2.0-or-later
 */
 
 // This shader performs UV coordinates that account for the aspect ratio of some
 // source as specified by the sourceSize uniform. The effective result is that
 // this results in behaviour similar to the "PreserveAspectFit" mode of QML Image.
 
 uniform highp mat4 qt_Matrix;
 
 uniform highp vec2 sourceSize;
 uniform highp vec2 targetSize;
 
 attribute highp vec4 qt_Vertex;
 attribute highp vec2 qt_MultiTexCoord0;
 
 varying highp vec2 qt_TexCoord0;
 
 void main() {
     highp float scale = min(targetSize.x / sourceSize.x, targetSize.y / sourceSize.y);
 
     highp vec2 newSize = sourceSize * scale;
     highp vec2 newOffset = (targetSize - newSize) / 2.0;
     highp vec2 uvOffset = (1.0 / newSize) * newOffset;
 
     qt_TexCoord0 = -uvOffset + (targetSize / newSize) * qt_MultiTexCoord0;
     gl_Position = qt_Matrix * qt_Vertex;
 }