renaming to plugins

[grits] / src / opengl.c

diff --git a/src/opengl.c b/src/opengl.c
index 43fd022864f98d7de882d36048f18f886898fb9b..e9d4a7e3a0a6d44ea35d6f361e4b8ec1f4db4f8d 100644 (file)
--- a/src/opengl.c
+++ b/src/opengl.c
@@ -54,6 +54,12 @@ static gboolean configure_start(GtkWidget *da, GdkEventConfigure *event, gpointe
        glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
        glClearColor(0.8f, 0.8f, 1.0f, 0.0f);
 
+       /* Tessellation, "finding intersecting triangles" */
+       /* http://research.microsoft.com/pubs/70307/tr-2006-81.pdf */
+       /* http://www.opengl.org/wiki/Alpha_Blending */
+       glAlphaFunc(GL_GREATER,0.1);
+       glEnable(GL_ALPHA_TEST);
+
        /* Depth test */
        glClearDepth(1.0);
        glDepthFunc(GL_LEQUAL);