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Move some OpenGL code to glutils.* .

Browse source 
Add support for changing window brightness.
Add DialogParent effect that makes windows that are unaccessible because
of modal dialogs darker.
Patch by Rivo Laks.


svn path=/branches/work/kwin_composite/; revision=603384
This commit is contained in:
Luboš Luňák 2006-11-08 19:10:07 +00:00
parent 71f68f91fd
commit aeafa63a94
9 changed files with 382 additions and 82 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
CMakeLists.txt
View file

@ -50,6 +50,7 @@ set(kwin_KDEINIT_SRCS
scene_basic.cpp
scene_xrender.cpp
scene_opengl.cpp
glutils.cpp
effects.cpp
effects/fadein.cpp
effects/maketransparent.cpp
@ -57,6 +58,7 @@ set(kwin_KDEINIT_SRCS
effects/shakymove.cpp
effects/shiftworkspaceup.cpp
effects/howto.cpp
effects/dialogparent.cpp
)
kde4_automoc(kwin ${kwin_KDEINIT_SRCS})

1
COMPOSITE_TODO
View file

@ -147,6 +147,7 @@ XRender TODO
- note that the matrix used seems to be weird (it doesn't act like the normal transformation
matrix as far as I can tell)
+ SceneXrender::Window::performPaint() doesn't use saturation
+ SceneXrender::Window::performPaint() doesn't use brightness
Effects framework TODO

2
effects.cpp
View file

@ -14,6 +14,7 @@ License. See the file "COPYING" for the exact licensing terms.
#include "client.h"
#include "scene.h"
#include "effects/dialogparent.h"
#include "effects/fadein.h"
#include "effects/howto.h"
#include "effects/maketransparent.h"
@ -94,6 +95,7 @@ EffectsHandler::EffectsHandler( Workspace* ws )
// effects.append( new ShiftWorkspaceUpEffect( ws ));
// effects.append( new FadeInEffect );
// effects.append( new ScaleInEffect );
// effects.append( new DialogParentEffect );
}
EffectsHandler::~EffectsHandler()

2
effects.h
View file

@ -31,6 +31,7 @@ class WindowPaintData
int xTranslate;
int yTranslate;
float saturation;
float brightness;
};
class ScreenPaintData
@ -92,6 +93,7 @@ WindowPaintData::WindowPaintData()
, xTranslate( 0 )
, yTranslate( 0 )
, saturation( 1 )
, brightness( 1 )
{
}

117
effects/dialogparent.cpp Normal file
View file

@ -0,0 +1,117 @@
/*****************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Rivo Laks <rivolaks@hot.ee>
You can Freely distribute this program under the GNU General Public
License. See the file "COPYING" for the exact licensing terms.
******************************************************************/
#include "dialogparent.h"
#include <client.h>
// Note that currently effects need to be manually enabled in the EffectsHandler
// class constructor (in effects.cpp).
namespace KWinInternal
{
void DialogParentEffect::prePaintWindow( Scene::Window* w, int* mask, QRegion* region, int time )
{
// How long does it take for the effect to get it's full strength (in ms)
const float changeTime = 200;
// Check if this window has a modal dialog and change the window's
// effect's strength accordingly
bool hasDialog = hasModalWindow(w->window());
if( hasDialog )
{
// Increase effect strength of this window
effectStrength[w] = qMin(1.0f, effectStrength[w] + time/changeTime);
}
else
{
effectStrength[w] = qMax(0.0f, effectStrength[w] - time/changeTime);
}
// Call the next effect
effects->prePaintWindow( w, mask, region, time );
}
void DialogParentEffect::paintWindow( Scene::Window* w, int mask, QRegion region, WindowPaintData& data )
{
float s = effectStrength[w];
if(s > 0.0f)
{
// Brightness will be within [1.0; 0.6]
data.brightness *= (1.0 - s * 0.4);
// Saturation within [1.0; 0.4]
data.saturation *= (1.0 - s * 0.6);
}
// Call the next effect.
effects->paintWindow( w, mask, region, data );
}
void DialogParentEffect::postPaintWindow( Scene::Window* w )
{
float s = effectStrength[w];
// If strength is between 0 and 1, the effect is still in progress and the
// window has to be repainted during the next pass
if( s > 0.0 && s < 1.0 )
w->window()->addDamageFull(); // trigger next animation repaint
// Call the next effect.
effects->postPaintWindow( w );
}
void DialogParentEffect::windowActivated( Toplevel* t )
{
// If this window is a dialog, we need to damage it's parent window, so
// that the effect could be run for it
// Set the window to be faded (or NULL if no window is active).
Client* c = qobject_cast<Client *>(t);
if ( c && c->isModal() )
{
// c is a modal dialog
Client* parent = c->transientFor();
if ( parent )
parent->addDamageFull();
}
}
void DialogParentEffect::windowDeleted( Toplevel* t )
{
// If this window is a dialog, we need to damage it's parent window, so
// that the effect could be run for it
// Set the window to be faded (or NULL if no window is active).
Client* c = qobject_cast<Client *>(t);
if ( c && c->isModal() )
{
// c is a modal dialog
Client* parent = c->transientFor();
if ( parent )
parent->addDamageFull();
}
}
bool DialogParentEffect::hasModalWindow( Toplevel* t )
{
Client* c = qobject_cast<Client *>(t);
if( !c )
return false;
// Check if any of the direct transients (children) of this window is modal
for( ClientList::ConstIterator it = c->transients().begin(); it != c->transients().end(); ++it )
if( (*it)->isModal() && (*it)->transientFor() == c )
return true;
return false;
}
} // namespace

47
effects/dialogparent.h Normal file
View file

@ -0,0 +1,47 @@
/*****************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Rivo Laks <rivolaks@hot.ee>
You can Freely distribute this program under the GNU General Public
License. See the file "COPYING" for the exact licensing terms.
******************************************************************/
#ifndef KWIN_DIALOGPARENT_H
#define KWIN_DIALOGPARENT_H
// Include with base class for effects.
#include <effects.h>
namespace KWinInternal
{
/**
* An effect which changes saturation and brighness of windows which have
* active modal dialogs.
* This should make the dialog seem more important and emphasize that the
* window is inactive until the dialog is closed.
**/
class DialogParentEffect
: public Effect
{
public:
virtual void prePaintWindow( Scene::Window* w, int* mask, QRegion* region, int time );
virtual void paintWindow( Scene::Window* w, int mask, QRegion region, WindowPaintData& data );
virtual void postPaintWindow( Scene::Window* w );
virtual void windowDeleted( Toplevel* c );
virtual void windowActivated( Toplevel* c );
protected:
bool hasModalWindow( Toplevel* t );
private:
// The progress of the fading.
QMap<Scene::Window*, float> effectStrength;
};
} // namespace
#endif

84
glutils.cpp Normal file
View file

@ -0,0 +1,84 @@
/*****************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Rivo Laks <rivolaks@hot.ee>
You can Freely distribute this program under the GNU General Public
License. See the file "COPYING" for the exact licensing terms.
******************************************************************/
#include "glutils.h"
#include <dlfcn.h>
namespace KWinInternal
{
// Variables
// GL version, use MAKE_OPENGL_VERSION() macro for comparing with a specific version
int glVersion;
// List of all supported GL extensions
QStringList glExtensions;
int glTextureUnitsCount;
// Function pointers
glXGetProcAddress_func glXGetProcAddress;
// texture_from_pixmap extension functions
glXReleaseTexImageEXT_func glXReleaseTexImageEXT;
glXBindTexImageEXT_func glXBindTexImageEXT;
// glActiveTexture
glActiveTexture_func glActiveTexture;
// Functions
static glXFuncPtr getProcAddress( const char* name )
{
glXFuncPtr ret = NULL;
if( glXGetProcAddress != NULL )
ret = glXGetProcAddress( ( const GLubyte* ) name );
if( ret == NULL )
ret = ( glXFuncPtr ) dlsym( RTLD_DEFAULT, name );
return ret;
}
void initGLX()
{
// handle OpenGL extensions functions
glXGetProcAddress = (glXGetProcAddress_func) getProcAddress( "glxGetProcAddress" );
if( glXGetProcAddress == NULL )
glXGetProcAddress = (glXGetProcAddress_func) getProcAddress( "glxGetProcAddressARB" );
glXBindTexImageEXT = (glXBindTexImageEXT_func) getProcAddress( "glXBindTexImageEXT" );
glXReleaseTexImageEXT = (glXReleaseTexImageEXT_func) getProcAddress( "glXReleaseTexImageEXT" );
}
void initGL()
{
// handle OpenGL extensions functions
glActiveTexture = (glActiveTexture_func) getProcAddress( "glActiveTexture" );
if( !glActiveTexture )
glActiveTexture = (glActiveTexture_func) getProcAddress( "glActiveTextureARB" );
// Get OpenGL version
QString glversionstring = QString((const char*)glGetString(GL_VERSION));
QStringList glversioninfo = glversionstring.left(glversionstring.indexOf(' ')).split('.');
glVersion = MAKE_OPENGL_VERSION(glversioninfo[0].toInt(), glversioninfo[1].toInt(),
glversioninfo.count() > 2 ? glversioninfo[2].toInt() : 0);
// Get list of supported OpenGL extensions
glExtensions = QString((const char*)glGetString(GL_EXTENSIONS)).split(" ");
// Get number of texture units
glGetIntegerv(GL_MAX_TEXTURE_UNITS, &glTextureUnitsCount);
}
bool hasGLVersion(int major, int minor, int release)
{
return glVersion >= MAKE_OPENGL_VERSION(major, minor, release);
}
bool hasGLExtension(const QString& extension)
{
return glExtensions.contains(extension);
}
} // namespace

84
glutils.h Normal file
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@ -0,0 +1,84 @@
/*****************************************************************
KWin - the KDE window manager
This file is part of the KDE project.
Copyright (C) 2006 Rivo Laks <rivolaks@hot.ee>
You can Freely distribute this program under the GNU General Public
License. See the file "COPYING" for the exact licensing terms.
******************************************************************/
#ifndef KWIN_GLUTILS_H
#define KWIN_GLUTILS_H
#include "utils.h"
#include <QStringList>
#include <GL/gl.h>
#include <GL/glx.h>
#include <GL/glext.h>
#include <GL/glxext.h>
#define MAKE_OPENGL_VERSION(major, minor, release) ( ((major) << 16) | ((minor) << 8) | (release) )
namespace KWinInternal
{
// Initializes GLX function pointers
void initGLX();
// Initializes OpenGL stuff. This includes resolving function pointers as
// well as checking for GL version and extensions
// Note that GL context has to be created by the time this function is called
void initGL();
// Number of supported texture units
extern int glTextureUnitsCount;
bool hasGLVersion(int major, int minor, int release = 0);
bool hasGLExtension(const QString& extension);
// Defines
/*
** GLX_EXT_texture_from_pixmap
*/
#define GLX_BIND_TO_TEXTURE_RGB_EXT 0x20D0
#define GLX_BIND_TO_TEXTURE_RGBA_EXT 0x20D1
#define GLX_BIND_TO_MIPMAP_TEXTURE_EXT 0x20D2
#define GLX_BIND_TO_TEXTURE_TARGETS_EXT 0x20D3
#define GLX_Y_INVERTED_EXT 0x20D4
#define GLX_TEXTURE_FORMAT_EXT 0x20D5
#define GLX_TEXTURE_TARGET_EXT 0x20D6
#define GLX_MIPMAP_TEXTURE_EXT 0x20D7
#define GLX_TEXTURE_FORMAT_NONE_EXT 0x20D8
#define GLX_TEXTURE_FORMAT_RGB_EXT 0x20D9
#define GLX_TEXTURE_FORMAT_RGBA_EXT 0x20DA
// Function pointers
// finding of OpenGL extensions functions
typedef void (*glXFuncPtr)();
typedef glXFuncPtr (*glXGetProcAddress_func)( const GLubyte* );
extern glXGetProcAddress_func glXGetProcAddress;
// texture_from_pixmap extension functions
typedef void (*glXBindTexImageEXT_func)( Display* dpy, GLXDrawable drawable,
int buffer, const int* attrib_list );
typedef void (*glXReleaseTexImageEXT_func)( Display* dpy, GLXDrawable drawable, int buffer );
extern glXReleaseTexImageEXT_func glXReleaseTexImageEXT;
extern glXBindTexImageEXT_func glXBindTexImageEXT;
// glActiveTexture
typedef void (*glActiveTexture_func)(GLenum);
extern glActiveTexture_func glActiveTexture;
} // namespace
#endif

125
scene_opengl.cpp
View file

@ -58,30 +58,7 @@ Sources and other compositing managers:
#include "utils.h"
#include "client.h"
#include "effects.h"
#include <dlfcn.h>
#include <GL/gl.h>
#include <GL/glext.h>
#include <GL/glxext.h>
/*
** GLX_EXT_texture_from_pixmap
*/
#define GLX_BIND_TO_TEXTURE_RGB_EXT 0x20D0
#define GLX_BIND_TO_TEXTURE_RGBA_EXT 0x20D1
#define GLX_BIND_TO_MIPMAP_TEXTURE_EXT 0x20D2
#define GLX_BIND_TO_TEXTURE_TARGETS_EXT 0x20D3
#define GLX_Y_INVERTED_EXT 0x20D4
#define GLX_TEXTURE_FORMAT_EXT 0x20D5
#define GLX_TEXTURE_TARGET_EXT 0x20D6
#define GLX_MIPMAP_TEXTURE_EXT 0x20D7
#define GLX_TEXTURE_FORMAT_NONE_EXT 0x20D8
#define GLX_TEXTURE_FORMAT_RGB_EXT 0x20D9
#define GLX_TEXTURE_FORMAT_RGBA_EXT 0x20DA
#include "glutils.h"
namespace KWinInternal
{
@ -102,30 +79,7 @@ bool SceneOpenGL::db; // destination drawable is double-buffered
bool SceneOpenGL::copy_buffer_hack; // workaround for nvidia < 1.0-9xxx drivers
bool SceneOpenGL::supports_saturation;
// finding of OpenGL extensions functions
typedef void (*glXFuncPtr)();
typedef glXFuncPtr (*glXGetProcAddress_func)( const GLubyte* );
glXGetProcAddress_func glXGetProcAddress;
static glXFuncPtr getProcAddress( const char* name )
{
glXFuncPtr ret = NULL;
if( glXGetProcAddress != NULL )
ret = glXGetProcAddress( ( const GLubyte* ) name );
if( ret == NULL )
ret = ( glXFuncPtr ) dlsym( RTLD_DEFAULT, name );
return ret;
}
// texture_from_pixmap extension functions
typedef void (*glXBindTexImageEXT_func)( Display* dpy, GLXDrawable drawable,
int buffer, const int* attrib_list );
typedef void (*glXReleaseTexImageEXT_func)( Display* dpy, GLXDrawable drawable, int buffer );
glXReleaseTexImageEXT_func glXReleaseTexImageEXT;
glXBindTexImageEXT_func glXBindTexImageEXT;
// glActiveTexture
typedef void (*glActiveTexture_func)(GLenum);
glActiveTexture_func glActiveTexture;
// detect OpenGL error (add to various places in code to pinpoint the place)
static void checkGLError( const char* txt )
@ -212,12 +166,7 @@ SceneOpenGL::SceneOpenGL( Workspace* ws )
int dummy;
if( !glXQueryExtension( display(), &dummy, &dummy ))
return;
// handle OpenGL extensions functions
glXGetProcAddress = (glXGetProcAddress_func) getProcAddress( "glxGetProcAddress" );
if( glXGetProcAddress == NULL )
glXGetProcAddress = (glXGetProcAddress_func) getProcAddress( "glxGetProcAddressARB" );
glXBindTexImageEXT = (glXBindTexImageEXT_func) getProcAddress( "glXBindTexImageEXT" );
glXReleaseTexImageEXT = (glXReleaseTexImageEXT_func) getProcAddress( "glXReleaseTexImageEXT" );
initGLX();
tfp_mode = ( glXBindTexImageEXT != NULL && glXReleaseTexImageEXT != NULL );
// use copy buffer hack from glcompmgr (called COPY_BUFFER there) - nvidia drivers older than
// 1.0-9xxx don't update pixmaps properly, so do a copy first
@ -243,24 +192,17 @@ SceneOpenGL::SceneOpenGL( Workspace* ws )
ctxbuffer = glXCreateNewContext( display(), fbcbuffer, GLX_RGBA_TYPE, NULL, GL_FALSE );
ctxdrawable = glXCreateNewContext( display(), fbcdrawable, GLX_RGBA_TYPE, ctxbuffer, GL_FALSE );
glXMakeContextCurrent( display(), glxbuffer, glxbuffer, ctxbuffer );
// Initialize OpenGL
initGL();
if( db )
glDrawBuffer( GL_BACK );
// Get OpenGL version
QString glversionstring = QString((const char*)glGetString(GL_VERSION));
QStringList glversioninfo = glversionstring.left(glversionstring.indexOf(' ')).split('.');
int glversionmajor = glversioninfo[0].toInt();
int glversionminor = glversioninfo[1].toInt();
int glversion = glversionmajor*100 + glversionminor;
// Get list of supported OpenGL extensions
QStringList extensions = QString((const char*)glGetString(GL_EXTENSIONS)).split(" ");
// Get number of texture units
int textureUnitsCount;
glGetIntegerv(GL_MAX_TEXTURE_UNITS, &textureUnitsCount);
// Check whether certain features are supported
glActiveTexture = (glActiveTexture_func) getProcAddress( "glActiveTexture" );
supports_saturation = ((extensions.contains("GL_ARB_texture_env_crossbar")
&& extensions.contains("GL_ARB_texture_env_dot3")) || glversion >= 104)
&& (textureUnitsCount >= 4) && glActiveTexture != NULL;
supports_saturation = ((hasGLExtension("GL_ARB_texture_env_crossbar")
&& hasGLExtension("GL_ARB_texture_env_dot3")) || hasGLVersion(1, 4))
&& (glTextureUnitsCount >= 4) && glActiveTexture != NULL;
// OpenGL scene setup
glMatrixMode( GL_PROJECTION );
glLoadIdentity();
@ -777,9 +719,8 @@ void SceneOpenGL::Window::performPaint( int mask, QRegion region, WindowPaintDat
glEnable( GL_TEXTURE_RECTANGLE_ARB );
glBindTexture( GL_TEXTURE_RECTANGLE_ARB, texture );
if( toplevel->hasAlpha() )
if( toplevel->hasAlpha() || data.brightness != 1.0f )
{
// Modulate both color and alpha by window's opacity
glActiveTexture( GL_TEXTURE3 );
glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE );
@ -787,37 +728,57 @@ void SceneOpenGL::Window::performPaint( int mask, QRegion region, WindowPaintDat
glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR );
glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB, GL_PRIMARY_COLOR );
glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR );
// Here we have to multiply original texture's alpha by our opacity
glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_MODULATE );
glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, GL_TEXTURE0 );
glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA );
glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_ALPHA, GL_PRIMARY_COLOR );
glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_ALPHA, GL_SRC_ALPHA );
if( toplevel->hasAlpha() )
{
// The color has to be multiplied by both opacity and brightness
float opacityByBrightness = data.opacity * data.brightness;
glColor4f( opacityByBrightness, opacityByBrightness, opacityByBrightness, data.opacity );
// Also multiply original texture's alpha by our opacity
glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_MODULATE );
glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, GL_TEXTURE0 );
glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA );
glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_ALPHA, GL_PRIMARY_COLOR );
glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_ALPHA, GL_SRC_ALPHA );
}
else
{
// Color has to be multiplied only by brightness
glColor4f( data.brightness, data.brightness, data.brightness, data.opacity );
// Alpha will be taken from previous stage
glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE );
glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, GL_PREVIOUS );
glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_ALPHA, GL_SRC_ALPHA );
}
glEnable( GL_TEXTURE_RECTANGLE_ARB );
glBindTexture( GL_TEXTURE_RECTANGLE_ARB, texture );
}
glActiveTexture(GL_TEXTURE0 );
}
else if( data.opacity != 1.0 )
else if( data.opacity != 1.0 || data.brightness != 1.0 )
{
// the window is additionally configured to have its opacity adjusted,
// do it
if( toplevel->hasAlpha())
{
float opacityByBrightness = data.opacity * data.brightness;
glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
glColor4f( data.opacity, data.opacity, data.opacity,
glColor4f( opacityByBrightness, opacityByBrightness, opacityByBrightness,
data.opacity);
}
else
{
float constant_alpha[] = { 0, 0, 0, data.opacity };
// Multiply color by brightness and replace alpha by opacity
float constant[] = { data.brightness, data.brightness, data.brightness, data.opacity };
glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_COMBINE );
glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_REPLACE );
glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_RGB, GL_MODULATE );
glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_RGB, GL_TEXTURE );
glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND0_RGB, GL_SRC_COLOR );
glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE1_RGB, GL_CONSTANT );
glTexEnvi( GL_TEXTURE_ENV, GL_OPERAND1_RGB, GL_SRC_COLOR );
glTexEnvi( GL_TEXTURE_ENV, GL_COMBINE_ALPHA, GL_REPLACE );
glTexEnvi( GL_TEXTURE_ENV, GL_SOURCE0_ALPHA, GL_CONSTANT );
glTexEnvfv( GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, constant_alpha );
glTexEnvfv( GL_TEXTURE_ENV, GL_TEXTURE_ENV_COLOR, constant );
}
}
glEnable( GL_TEXTURE_RECTANGLE_ARB );
@ -840,7 +801,7 @@ void SceneOpenGL::Window::performPaint( int mask, QRegion region, WindowPaintDat
}
glEnd();
glPopMatrix();
if( data.opacity != 1.0 || data.saturation != 1.0 )
if( data.opacity != 1.0 || data.saturation != 1.0 || data.brightness != 1.0f )
{
if( data.saturation != 1.0 && supports_saturation )
{