Fixed missing snippets for QOpenGLShaderProgram.

Change-Id: Ie44edb3379f6fef4c4c8b69bb5e36fc19154ab26
Reviewed-on: http://codereview.qt-project.org/6332
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>

doc/src/snippets/code/src_gui_qopenglshaderprogram.cpp

@@ -0,0 +1,94 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:BSD$
+** You may use this file under the terms of the BSD license as follows:
+**
+** "Redistribution and use in source and binary forms, with or without
+** modification, are permitted provided that the following conditions are
+** met:
+**   * Redistributions of source code must retain the above copyright
+**     notice, this list of conditions and the following disclaimer.
+**   * Redistributions in binary form must reproduce the above copyright
+**     notice, this list of conditions and the following disclaimer in
+**     the documentation and/or other materials provided with the
+**     distribution.
+**   * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
+**     the names of its contributors may be used to endorse or promote
+**     products derived from this software without specific prior written
+**     permission.
+**
+** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//! [0]
+QOpenGLShader shader(QOpenGLShader::Vertex);
+shader.compileSourceCode(code);
+
+QOpenGLShaderProgram program(context);
+program.addShader(shader);
+program.link();
+
+program.bind();
+//! [0]
+
+//! [1]
+program.addShaderFromSourceCode(QOpenGLShader::Vertex,
+    "attribute highp vec4 vertex;\n"
+    "uniform highp mat4 matrix;\n"
+    "void main(void)\n"
+    "{\n"
+    "   gl_Position = matrix * vertex;\n"
+    "}");
+program.addShaderFromSourceCode(QOpenGLShader::Fragment,
+    "uniform mediump vec4 color;\n"
+    "void main(void)\n"
+    "{\n"
+    "   gl_FragColor = color;\n"
+    "}");
+program.link();
+program.bind();
+
+int vertexLocation = program.attributeLocation("vertex");
+int matrixLocation = program.uniformLocation("matrix");
+int colorLocation = program.uniformLocation("color");
+//! [1]
+
+//! [2]
+static GLfloat const triangleVertices[] = {
+    60.0f,  10.0f,  0.0f,
+    110.0f, 110.0f, 0.0f,
+    10.0f,  110.0f, 0.0f
+};
+
+QColor color(0, 255, 0, 255);
+
+QMatrix4x4 pmvMatrix;
+pmvMatrix.ortho(rect());
+
+program.enableAttributeArray(vertexLocation);
+program.setAttributeArray(vertexLocation, triangleVertices, 3);
+program.setUniformValue(matrixLocation, pmvMatrix);
+program.setUniformValue(colorLocation, color);
+
+glDrawArrays(GL_TRIANGLES, 0, 3);
+
+program.disableAttributeArray(vertexLocation);
+//! [2]

src/gui/opengl/qopenglshaderprogram.cpp

@@ -71,7 +71,7 @@ QT_BEGIN_NAMESPACE
     program is activated in the current QOpenGLContext by calling
     QOpenGLShaderProgram::bind():
 
-    \snippet doc/src/snippets/code/src_opengl_qopenglshaderprogram.cpp 0
+    \snippet doc/src/snippets/code/src_gui_qopenglshaderprogram.cpp 0
 
     \section1 Writing portable shaders
 
@@ -99,12 +99,12 @@ QT_BEGIN_NAMESPACE
 
     \section1 Simple shader example
 
-    \snippet doc/src/snippets/code/src_opengl_qopenglshaderprogram.cpp 1
+    \snippet doc/src/snippets/code/src_gui_qopenglshaderprogram.cpp 1
 
     With the above shader program active, we can draw a green triangle
     as follows:
 
-    \snippet doc/src/snippets/code/src_opengl_qopenglshaderprogram.cpp 2
+    \snippet doc/src/snippets/code/src_gui_qopenglshaderprogram.cpp 2
 
     \section1 Binary shaders and programs