CVS commit by pahlibar: 


check for max texture value allowed before generating the textures. one user had
a rather low texture size of 512. fixed problem over priv mail conversation.
CCMAIL: 90183-done@bugs.kde.org


  M +20 -2     slideshowgl.cpp   1.9


--- kdeextragear-libs-1/kipi-plugins/slideshow/slideshowgl.cpp  #1.8:1.9
@@ -50,6 +50,6 @@ SlideShowGL::SlideShowGL(const QStringLi
     resize(QApplication::desktop()->size());
 
-    width_  = QMIN( 1024, 1 << (int)ceil(log((float)width())/log((float)2)) );
-    height_ = QMIN( 1024, 1 << (int)ceil(log((float)height())/log((float)2)) );
+    width_  = 64;
+    height_ = 64;
 
     // --------------------------------------------------
@@ -119,4 +119,22 @@ void SlideShowGL::initializeGL()
     glClearDepth(1.0f);
 
+    // get the maximum texture value.
+    GLint maxTexVal;
+    glGetIntegerv(GL_MAX_TEXTURE_SIZE, &maxTexVal);
+
+    // allow only maximum texture value of 1024. anything bigger and things slow down
+    maxTexVal = QMIN(1024, maxTexVal);
+
+    width_  = QApplication::desktop()->width();
+    height_ = QApplication::desktop()->height();
+
+    width_  = 1 << (int)ceil(log((float)width_)/log((float)2)) ;
+    height_ = 1 << (int)ceil(log((float)height_)/log((float)2));
+    
+    width_  = QMIN( maxTexVal, width_ );
+    height_ = QMIN( maxTexVal, height_ );
+
+    // load the first image
+
     loadImage();
 }