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Use color shader to render the background

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Martin Gräßlin 2010-12-05 09:16:56 +01:00 committed by Martin Gräßlin
parent ae95ab0c43
commit 2703a23abf
1 changed files with 26 additions and 5 deletions
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27
scene_opengl_egl.cpp
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@ -247,9 +247,30 @@ void SceneOpenGL::paintGenericScreen(int mask, ScreenPaintData data)
void SceneOpenGL::paintBackground(QRegion region)
{
// TODO: implement me
//glClearColor(0, 0, 0, 1);
//glClear(GL_COLOR_BUFFER_BIT);
PaintClipper pc(region);
if (!PaintClipper::clip()) {
glClearColor(0, 0, 0, 1);
glClear(GL_COLOR_BUFFER_BIT);
return;
}
if (pc.clip() && pc.paintArea().isEmpty())
return; // no background to paint
QVector<float> verts;
for (PaintClipper::Iterator iterator; !iterator.isDone(); iterator.next()) {
QRect r = iterator.boundingRect();
verts << r.x() + r.width() << r.y();
verts << r.x() << r.y();
verts << r.x() << r.y() + r.height();
verts << r.x() << r.y() + r.height();
verts << r.x() + r.width() << r.y() + r.height();
verts << r.x() + r.width() << r.y();
}
GLVertexBuffer vbo(GLVertexBuffer::Static);
vbo.setUseColor(true);
vbo.setUseShader(true);
vbo.setData(verts.count() / 2, 2, verts.data(), NULL);
m_colorShader->bind();
vbo.render(GL_TRIANGLES);
}
//****************************************