src/java.desktop/unix/native/common/java2d/opengl/GLXGraphicsConfig.c

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@@ -396,12 +396,12 @@
  * for extension queries, etc.
  */
 static GLXPbuffer
 GLXGC_InitScratchPbuffer(GLXFBConfig fbconfig)
 {
-    int pbattrlist[] = {GLX_PBUFFER_WIDTH, 1,
-                        GLX_PBUFFER_HEIGHT, 1,
+    int pbattrlist[] = {GLX_PBUFFER_WIDTH, 4,
+                        GLX_PBUFFER_HEIGHT, 4,
                         GLX_PRESERVED_CONTENTS, GL_FALSE,
                         0};
 
     J2dTraceLn(J2D_TRACE_INFO, "GLXGC_InitScratchPbuffer");