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Render empty areas in multiscreen with VBO.

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This commit is contained in:
Martin Gräßlin 2011-01-01 17:49:51 +01:00
parent ea08ae0929
commit 8d196da880
1 changed files with 18 additions and 12 deletions
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30
effects/cube/cube.cpp
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@ -1712,7 +1712,6 @@ void CubeEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowP
}
paint = paint.subtracted( QRegion( w->geometry()));
// in case of free area in multiscreen setup fill it with cap color
#ifndef KWIN_HAVE_OPENGLES
if( !paint.isEmpty() )
{
if( mode == Cylinder )
@ -1726,11 +1725,12 @@ void CubeEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowP
sphereShader->setUniform( "xCoord", 0.0f );
sphereShader->setUniform( "yCoord", 0.0f );
}
glColor4f( capColor.redF(), capColor.greenF(), capColor.blueF(), cubeOpacity );
#ifndef KWIN_HAVE_OPENGLES
glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT );
#endif
glEnable( GL_BLEND );
glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
glBegin( GL_QUADS );
QVector<float> verts;
float quadSize = 0.0f;
int leftDesktop = frontDesktop -1;
int rightDesktop = frontDesktop + 1;
@ -1750,21 +1750,27 @@ void CubeEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowP
{
for( int j=0; j<=(paintRect.width()/quadSize); j++ )
{
glVertex2f( paintRect.x()+j*quadSize, paintRect.y()+i*quadSize );
glVertex2f( qMin( paintRect.x()+(j+1)*quadSize, (float)paintRect.x() + paintRect.width() ),
paintRect.y()+i*quadSize );
glVertex2f( qMin( paintRect.x()+(j+1)*quadSize, (float)paintRect.x() + paintRect.width() ),
qMin( paintRect.y() + (i+1)*quadSize, (float)paintRect.y() + paintRect.height() ) );
glVertex2f( paintRect.x()+j*quadSize,
qMin( paintRect.y() + (i+1)*quadSize, (float)paintRect.y() + paintRect.height() ) );
verts << qMin( paintRect.x()+(j+1)*quadSize, (float)paintRect.x() + paintRect.width() ) << paintRect.y()+i*quadSize;
verts << paintRect.x()+j*quadSize << paintRect.y()+i*quadSize;
verts << paintRect.x()+j*quadSize << qMin( paintRect.y() + (i+1)*quadSize, (float)paintRect.y() + paintRect.height() );
verts << paintRect.x()+j*quadSize << qMin( paintRect.y() + (i+1)*quadSize, (float)paintRect.y() + paintRect.height() );
verts << qMin( paintRect.x()+(j+1)*quadSize, (float)paintRect.x() + paintRect.width() ) << qMin( paintRect.y() + (i+1)*quadSize, (float)paintRect.y() + paintRect.height() );
verts << qMin( paintRect.x()+(j+1)*quadSize, (float)paintRect.x() + paintRect.width() ) << paintRect.y()+i*quadSize;
}
}
}
glEnd();
GLVertexBuffer *vbo = GLVertexBuffer::streamingBuffer();
vbo->reset();
QColor color = capColor;
capColor.setAlphaF(cubeOpacity);
vbo->setColor(color);
vbo->setData(verts.size()/2, 2, verts.constData(), NULL);
vbo->render(GL_TRIANGLES);
glDisable( GL_BLEND );
#ifndef KWIN_HAVE_OPENGLES
glPopAttrib();
}
#endif
}
}
#ifndef KWIN_HAVE_OPENGLES
glPopMatrix();