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3 ** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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5 ** Contact: Nokia Corporation (qt-info@nokia.com)
7 ** This file is part of the documentation of the Qt Toolkit.
9 ** $QT_BEGIN_LICENSE:BSD$
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13 ** modification, are permitted provided that the following conditions are
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16 ** notice, this list of conditions and the following disclaimer.
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26 ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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42 QGLShader shader(QGLShader::Vertex);
43 shader.compileSourceCode(code);
45 QGLShaderProgram program(context);
46 program.addShader(shader);
53 program.addShaderFromSourceCode(QGLShader::Vertex,
54 "attribute highp vec4 vertex;\n"
55 "uniform highp mat4 matrix;\n"
58 " gl_Position = matrix * vertex;\n"
60 program.addShaderFromSourceCode(QGLShader::Fragment,
61 "uniform mediump vec4 color;\n"
64 " gl_FragColor = color;\n"
69 int vertexLocation = program.attributeLocation("vertex");
70 int matrixLocation = program.uniformLocation("matrix");
71 int colorLocation = program.uniformLocation("color");
75 static GLfloat const triangleVertices[] = {
81 QColor color(0, 255, 0, 255);
84 pmvMatrix.ortho(rect());
86 program.enableAttributeArray(vertexLocation);
87 program.setAttributeArray(vertexLocation, triangleVertices, 3);
88 program.setUniformValue(matrixLocation, pmvMatrix);
89 program.setUniformValue(colorLocation, color);
91 glDrawArrays(GL_TRIANGLES, 0, 3);
93 program.disableAttributeArray(vertexLocation);