Clear Conus radar overlay textures

[aweather] / src / plugins / radar.c

diff --git a/src/plugins/radar.c b/src/plugins/radar.c
index 8166e6630891c2fdd341b0468e2b2a57a398d1c1..9d39dd00a0d21c14ded71b2178201f41dd75a2ef 100644 (file)
--- a/src/plugins/radar.c
+++ b/src/plugins/radar.c
@@ -378,13 +378,14 @@ static void _conus_update_end_copy(GritsTile *tile, guchar *pixels)
                glGenTextures(1, tile->data);
        }
 
+       gchar *clear = g_malloc0(2048*2048*4);
        guint *tex = tile->data;
        glBindTexture(GL_TEXTURE_2D, *tex);
 
        glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
        glPixelStorei(GL_PACK_ALIGNMENT, 1);
        glTexImage2D(GL_TEXTURE_2D, 0, 4, 2048, 2048, 0,
-                       GL_RGBA, GL_UNSIGNED_BYTE, NULL);
+                       GL_RGBA, GL_UNSIGNED_BYTE, clear);
        glTexSubImage2D(GL_TEXTURE_2D, 0, 1,1, CONUS_WIDTH/2,CONUS_HEIGHT,
                        GL_RGBA, GL_UNSIGNED_BYTE, pixels);
        tile->coords.n = 1.0/(CONUS_WIDTH/2);
@@ -396,6 +397,7 @@ static void _conus_update_end_copy(GritsTile *tile, guchar *pixels)
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP);
        glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP);
        glFlush();
+       g_free(clear);
 }
 
 /* Split the pixbuf into east and west halves (with 2K sides)