adjust projection matrix to hopefully match screen better

diff --git a/render2/instance.c b/render2/instance.c
index e0dd849690013a42139daf5df1052a89148793e6..66e305af419ac318781f66e8cbc48858b7a83a0a 100644 (file)
--- a/render2/instance.c
+++ b/render2/instance.c
@@ -114,7 +114,7 @@ struct RrInstance *RrInstanceNew(Display *display, int screen)
 
         glMatrixMode(GL_PROJECTION);
         glLoadIdentity();
-        glOrtho(0, RrScreenWidth(inst), 0, RrScreenHeight(inst), 0, 10);
+        glOrtho(-1, RrScreenWidth(inst), -1, RrScreenHeight(inst), 0, 10);
 
         glMatrixMode(GL_MODELVIEW);
         glLoadIdentity();