From a7ab423f933269a06c045a74ae7d2c9bcdd6618d Mon Sep 17 00:00:00 2001
From: Rivo Laks <rivolaks@hot.ee>
Date: Fri, 24 Aug 2007 18:45:08 +0000
Subject: [PATCH] Use texture lod bias when available to make
 trilinear-filtered windows look a bit sharper

svn path=/trunk/KDE/kdebase/workspace/; revision=704372
---
 scene_opengl.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/scene_opengl.cpp b/scene_opengl.cpp
index 2c75296e9a..11c69c28cb 100644
--- a/scene_opengl.cpp
+++ b/scene_opengl.cpp
@@ -749,7 +749,14 @@ SceneOpenGL::Texture::~Texture()
 
 void SceneOpenGL::Texture::init()
     {
+    bind();
     bound_glxpixmap = None;
+    if( hasGLVersion( 1, 4, 0 ))
+        {
+        // Lod bias makes the trilinear-filtered texture look a bit sharper
+        glTexEnvf( GL_TEXTURE_FILTER_CONTROL, GL_TEXTURE_LOD_BIAS, -1.0f );
+        }
+    unbind();
     }
 
 void SceneOpenGL::Texture::discard()