990001c5d7
The vertex buffer implementation uses the shader manager to decide whether core painting should be used or not. Shader manager is only used by shaders using vertex attributes instead of gl_Vertex etc.
132 lines
3.9 KiB
C++
132 lines
3.9 KiB
C++
/********************************************************************
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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) 2007 Lubos Lunak <l.lunak@kde.org>
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Copyright (C) 2010 Martin Gräßlin <kde@martin-graesslin.com>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "showpaint.h"
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#include <kwinconfig.h>
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#ifdef KWIN_HAVE_OPENGL_COMPOSITING
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#include <kwinglutils.h>
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#endif
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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#include <X11/Xlib.h>
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#include <X11/extensions/Xrender.h>
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#endif
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#include <math.h>
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#include <qcolor.h>
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namespace KWin
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{
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KWIN_EFFECT( showpaint, ShowPaintEffect )
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static QColor colors[] = { Qt::red, Qt::green, Qt::blue, Qt::cyan, Qt::magenta,
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Qt::yellow, Qt::gray };
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ShowPaintEffect::ShowPaintEffect()
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: color_index( 0 )
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{
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}
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ShowPaintEffect::~ShowPaintEffect()
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{
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}
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void ShowPaintEffect::paintScreen( int mask, QRegion region, ScreenPaintData& data )
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{
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painted = QRegion();
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effects->paintScreen( mask, region, data );
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#ifdef KWIN_HAVE_OPENGL_COMPOSITING
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if( effects->compositingType() == OpenGLCompositing)
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paintGL();
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#endif
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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if( effects->compositingType() == XRenderCompositing)
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paintXrender();
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#endif
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if( ++color_index == sizeof( colors ) / sizeof( colors[ 0 ] ))
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color_index = 0;
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}
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void ShowPaintEffect::paintWindow( EffectWindow* w, int mask, QRegion region, WindowPaintData& data )
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{
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painted |= region;
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effects->paintWindow( w, mask, region, data );
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}
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void ShowPaintEffect::paintGL()
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{
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#ifdef KWIN_HAVE_OPENGL_COMPOSITING
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#ifndef KWIN_HAVE_OPENGLES
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glPushAttrib( GL_CURRENT_BIT | GL_ENABLE_BIT );
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#endif
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GLVertexBuffer *vbo = GLVertexBuffer::streamingBuffer();
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vbo->reset();
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vbo->setUseColor(true);
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if (ShaderManager::instance()->isValid()) {
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ShaderManager::instance()->pushShader(ShaderManager::ColorShader);
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}
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glEnable( GL_BLEND );
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA );
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QColor color = colors[ color_index ];
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color.setAlphaF(0.2);
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vbo->setColor(color);
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QVector<float> verts;
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verts.reserve(painted.rects().count()*12);
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foreach (const QRect &r, painted.rects()) {
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verts << r.x() + r.width() << r.y();
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verts << r.x() << r.y();
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verts << r.x() << r.y() + r.height();
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verts << r.x() << r.y() + r.height();
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verts << r.x() + r.width() << r.y() + r.height();
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verts << r.x() + r.width() << r.y();
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}
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vbo->setData(verts.count()/2, 2, verts.data(), NULL);
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vbo->render(GL_TRIANGLES);
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if (ShaderManager::instance()->isValid()) {
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ShaderManager::instance()->popShader();
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}
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glDisable( GL_BLEND );
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#ifndef KWIN_HAVE_OPENGLES
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glPopAttrib();
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#endif
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#endif
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}
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void ShowPaintEffect::paintXrender()
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{
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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XRenderColor col;
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float alpha = 0.2;
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const QColor& color = colors[ color_index ];
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col.alpha = int( alpha * 0xffff );
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col.red = int( alpha * 0xffff * color.red() / 255 );
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col.green = int( alpha * 0xffff * color.green() / 255 );
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col.blue= int( alpha * 0xffff * color.blue() / 255 );
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foreach( const QRect &r, painted.rects())
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XRenderFillRectangle( display(), PictOpOver, effects->xrenderBufferPicture(),
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&col, r.x(), r.y(), r.width(), r.height());
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#endif
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}
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} // namespace
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