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Detect and check GLX version/extensions.

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svn path=/branches/work/kwin_composite/; revision=604805
This commit is contained in:
Luboš Luňák 2006-11-14 11:52:20 +00:00
parent e86e1cf88f
commit 1be2c4ed32
3 changed files with 11 additions and 5 deletions
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12
glutils.cpp
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@ -17,11 +17,11 @@ namespace KWinInternal
{ {
// Variables // Variables
// GL version, use MAKE_OPENGL_VERSION() macro for comparing with a specific version // GL version, use MAKE_OPENGL_VERSION() macro for comparing with a specific version
int glVersion; static int glVersion;
// GLX version, use MAKE_GLX_VERSION() macro for comparing with a specific version // GLX version, use MAKE_GLX_VERSION() macro for comparing with a specific version
int glXVersion; static int glXVersion;
// List of all supported GL extensions // List of all supported GL and GLX extensions
QStringList glExtensions; static QStringList glExtensions;
int glTextureUnitsCount; int glTextureUnitsCount;
// Function pointers // Function pointers
@ -58,6 +58,9 @@ void initGLX()
int major, minor; int major, minor;
glXQueryVersion( display(), &major, &minor ); glXQueryVersion( display(), &major, &minor );
glXVersion = MAKE_GLX_VERSION( major, minor, 0 ); glXVersion = MAKE_GLX_VERSION( major, minor, 0 );
// Get list of supported GLX extensions. Simply add it to the list of OpenGL extensions.
glExtensions += QString((const char*)glXQueryExtensionsString(
display(), DefaultScreen( display()))).split(" ");
} }
void initGL() void initGL()
@ -94,5 +97,4 @@ bool hasGLExtension(const QString& extension)
return glExtensions.contains(extension); return glExtensions.contains(extension);
} }
} // namespace } // namespace

1
glutils.h
View file

@ -44,6 +44,7 @@ extern int glTextureUnitsCount;
bool hasGLVersion(int major, int minor, int release = 0); bool hasGLVersion(int major, int minor, int release = 0);
bool hasGLXVersion(int major, int minor, int release = 0); bool hasGLXVersion(int major, int minor, int release = 0);
// use for both OpenGL and GLX extensions
bool hasGLExtension(const QString& extension); bool hasGLExtension(const QString& extension);

3
scene_opengl.cpp
View file

@ -149,6 +149,9 @@ SceneOpenGL::SceneOpenGL( Workspace* ws )
if( !glXQueryExtension( display(), &dummy, &dummy )) if( !glXQueryExtension( display(), &dummy, &dummy ))
return; return;
initGLX(); initGLX();
// check for FBConfig support
if( !hasGLXVersion( 1, 3 ) && !hasGLExtension( "GLX_SGIX_fbconfig" ))
return;
tfp_mode = ( glXBindTexImageEXT != NULL && glXReleaseTexImageEXT != NULL ); tfp_mode = ( glXBindTexImageEXT != NULL && glXReleaseTexImageEXT != NULL );
// use copy buffer hack from glcompmgr (called COPY_BUFFER there) - nvidia drivers older than // 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 // 1.0-9xxx don't update pixmaps properly, so do a copy first