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Use multi screen initialisation of CoverSwitch (only for no "big cube") and the reflection with a PaintClipper. This solves some painting issues of cube and multi screen setups.

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svn path=/trunk/KDE/kdebase/workspace/; revision=892205
This commit is contained in:
Martin Gräßlin 2008-12-03 19:51:41 +00:00
parent 77381aadb3
commit ba9eaebb12
1 changed files with 32 additions and 27 deletions
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59
effects/cube.cpp
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@ -243,39 +243,39 @@ void CubeEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
float xmax = ymax * aspect;
float xTranslate = 0.0;
float yTranslate = 0.0;
bool projectionSet = false;
float xminFactor = 1.0;
float xmaxFactor = 1.0;
float yminFactor = 1.0;
float ymaxFactor = 1.0;
if( rect.x() == 0 && rect.width() != fullRect.width() )
{
// horizontal layout: left screen
glFrustum( xmin*0.5, xmax*1.5, ymin, ymax, zNear, zFar );
xTranslate = rect.width()*0.5;
projectionSet = true;
xminFactor = (float)rect.width()/(float)fullRect.width();
xmaxFactor = ((float)fullRect.width()-(float)rect.width()*0.5f)/((float)fullRect.width()*0.5f);
xTranslate = (float)fullRect.width()*0.5f-(float)rect.width()*0.5f;
}
if( rect.x() != 0 && rect.width() != fullRect.width() )
{
// horizontal layout: right screen
glFrustum( xmin*1.5, xmax*0.5, ymin, ymax, zNear, zFar );
xTranslate = rect.width()*0.5;
projectionSet = true;
xminFactor = ((float)fullRect.width()-(float)rect.width()*0.5f)/((float)fullRect.width()*0.5f);
xmaxFactor = (float)rect.width()/(float)fullRect.width();
xTranslate = (float)fullRect.width()*0.5f-(float)rect.width()*0.5f;
}
if( rect.y() == 0 && rect.height() != fullRect.height() )
{
glFrustum( xmin, xmax, ymin*1.5, ymax*0.5, zNear, zFar );
yTranslate = rect.height()*0.5;
projectionSet = true;
// vertical layout: top screen
yminFactor = ((float)fullRect.height()-(float)rect.height()*0.5f)/((float)fullRect.height()*0.5f);
ymaxFactor = (float)rect.height()/(float)fullRect.height();
yTranslate = (float)fullRect.height()*0.5f-(float)rect.height()*0.5f;
}
if( rect.y() != 0 && rect.height() != fullRect.height() )
{
glFrustum( xmin, xmax, ymin*0.5, ymax*1.5, zNear, zFar );
yTranslate = rect.height()*0.5;
projectionSet = true;
}
if( !projectionSet )
{
// this should never happen; nevertheless reset the projection to the default
glPopMatrix();
glPushMatrix();
// vertical layout: bottom screen
yminFactor = (float)rect.height()/(float)fullRect.height();
ymaxFactor = ((float)fullRect.height()-(float)rect.height()*0.5f)/((float)fullRect.height()*0.5f);
yTranslate = (float)fullRect.height()*0.5f-(float)rect.height()*0.5f;
}
glFrustum( xmin*xminFactor, xmax*xmaxFactor, ymin*yminFactor, ymax*ymaxFactor, zNear, zFar );
glMatrixMode( GL_MODELVIEW );
glPushMatrix();
glTranslatef( xTranslate, yTranslate, 0.0 );
@ -284,8 +284,12 @@ void CubeEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
// reflection
if( reflection && (!slide) )
{
// restrict painting the reflections to the current screen
PaintClipper::push( QRegion( rect ));
glPushMatrix();
float scaleFactor = 10000 * tan( 60.0 * M_PI / 360.0f )/rect.height();
// we can use a huge scale factor (needed to calculate the rearground vertices)
// as we restrict with a PaintClipper painting on the current screen
float scaleFactor = 1000000 * tan( 60.0 * M_PI / 360.0f )/rect.height();
glScalef( 1.0, -1.0, 1.0 );
glTranslatef( 0.0, -rect.height()*2, 0.0 );
@ -297,17 +301,17 @@ void CubeEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
glPopMatrix();
glPushMatrix();
glTranslatef( 0.0, rect.height(), 0.0 );
if( effects->numScreens() > 1 && rect.width() != fullRect.width() && !slide && !bigCube )
if( effects->numScreens() > 1 && rect.x() != fullRect.x() && !slide && !bigCube )
{
// have to change the reflection area in horizontal layout and right screen
glTranslatef( -rect.width(), 0.0, 0.0 );
glTranslatef( -rect.x(), 0.0, 0.0 );
}
glTranslatef( rect.x() + rect.width()*0.5f, 0.0, 0.0 );
float vertices[] = {
rect.x(), 0.0, 0.0,
rect.x()+rect.width(), 0.0, 0.0,
(rect.x()+rect.width())*scaleFactor, 0.0, -5000,
(-rect.x()-rect.width())*scaleFactor, 0.0, -5000 };
-rect.width()*0.5f, rect.height(), 0.0,
rect.width()*0.5f, rect.height(), 0.0,
(float)rect.width()*scaleFactor, rect.height(), -5000,
-(float)rect.width()*scaleFactor, rect.height(), -5000 };
// foreground
float alpha = 0.7;
if( start )
@ -325,6 +329,7 @@ void CubeEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
glVertex3f( vertices[9], vertices[10], vertices[11] );
glEnd();
glPopMatrix();
PaintClipper::pop( QRegion( rect ));
}
glPushMatrix();
paintScene( mask, region, data );