115 lines
3.1 KiB
C++
115 lines
3.1 KiB
C++
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/*****************************************************************
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KWin - the KDE window manager
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This file is part of the KDE project.
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Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
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You can Freely distribute this program under the GNU General Public
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License. See the file "COPYING" for the exact licensing terms.
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******************************************************************/
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#include "showfps.h"
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#include <workspace.h>
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#include <GL/gl.h>
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namespace KWinInternal
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{
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ShowFpsEffect::ShowFpsEffect( Workspace* ws )
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: wspace( ws )
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, paints_pos( 0 )
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, frames_pos( 0 )
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{
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for( int i = 0;
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i < NUM_PAINTS;
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++i )
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paints[ i ] = 0;
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for( int i = 0;
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i < MAX_FPS;
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++i )
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frames[ i ] = 0;
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}
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void ShowFpsEffect::prePaintScreen( int* mask, QRegion* region, int time )
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{
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*mask &= ~Scene::PAINT_SCREEN_REGION;
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if( time == 0 )
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; // TODO optimized away
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t.start();
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frames[ frames_pos ] = t.second() * 1000 + t.msec();
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if( ++frames_pos == MAX_FPS )
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frames_pos = 0;
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effects->prePaintScreen( mask, region, time );
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}
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void ShowFpsEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
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{
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effects->paintScreen( mask, region, data );
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glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT );
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glEnable( GL_BLEND );
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
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const double ALPHA = 0.5;
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const int MAX_TIME = 100;
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int x = 100;
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int y = 100;
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int FPS_WIDTH = 10;
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glColor4f( 1, 1, 1, ALPHA ); // white
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glBegin( GL_QUADS );
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glVertex2i( x, y );
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glVertex2i( x + NUM_PAINTS + FPS_WIDTH, y );
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glVertex2i( x + NUM_PAINTS + FPS_WIDTH, y + MAX_TIME );
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glVertex2i( x, y + MAX_TIME );
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glEnd();
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y += MAX_TIME;
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glBegin( GL_LINES );
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for( int i = 0;
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i < NUM_PAINTS;
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++i )
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{
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int value = paints[ ( i + paints_pos ) % NUM_PAINTS ];
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if( value > MAX_TIME )
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value = MAX_TIME; // limit
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if( value <= 10 )
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glColor4f( 0, 1, 0, ALPHA ); // green
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else if( value <= 20 )
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glColor4f( 1, 1, 0, ALPHA ); // yellow
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else if( value <= 50 )
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glColor4f( 1, 0, 0, ALPHA ); // red
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else
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glColor4f( 0, 0, 0, ALPHA ); // black
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glVertex2i( x + i, y );
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glVertex2i( x + i, y - value );
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}
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glEnd();
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int fps = 0;
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for( int i = 0;
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i < MAX_FPS;
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++i )
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if( t.second() * 1000 + t.msec() - frames[ i ] < 1000 )
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++fps; // count all frames in the last second
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if( fps > MAX_TIME )
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fps = MAX_TIME; // keep it the same height (TODO change later)
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glBegin( GL_QUADS );
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x += NUM_PAINTS; // paint to the right
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glColor4f( 0, 0, 1, ALPHA ); // blue
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glVertex2i( x, y );
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glVertex2i( x + FPS_WIDTH, y );
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glVertex2i( x + FPS_WIDTH, y - fps );
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glVertex2i( x, y - fps );
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glEnd();
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glPopAttrib();
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}
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void ShowFpsEffect::postPaintScreen()
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{
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effects->postPaintScreen();
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paints[ paints_pos ] = t.elapsed();
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if( ++paints_pos == NUM_PAINTS )
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paints_pos = 0;
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wspace->addDamageFull();
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}
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} // namespace
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