Index: src/display_sdl.c
--- src/display_sdl.c.orig
+++ src/display_sdl.c
@@ -77,6 +77,6 @@ GLuint gl_c_fbo = 0;
 GLuint gl_c_shader = 0;
 int nb_draws = 0;
 int gl_c_vertices_nb = 0, gl_c_texcoords_nb = 0, gl_c_colors_nb = 0;
-GLfloat *gl_c_vertices_ptr = NULL;
-GLfloat *gl_c_texcoords_ptr = NULL;
-GLfloat *gl_c_colors_ptr = NULL;
+GLvoid *gl_c_vertices_ptr = NULL;
+GLvoid *gl_c_texcoords_ptr = NULL;
+GLvoid *gl_c_colors_ptr = NULL;
