GL_OES_texture_3D has a GLSL counterpart. Since it is not implemented,
GL_OES_texture_3D should not be advertised.
if (ctx->Extensions.ARB_vertex_buffer_object)
len += append_extension(&str, "GL_OES_mapbuffer");
+#if 0
+ /* disabled because of missing GLSL support */
if (ctx->Extensions.EXT_texture3D)
len += append_extension(&str, "GL_OES_texture_3D");
+#endif
+
if (ctx->Extensions.ARB_texture_non_power_of_two)
len += append_extension(&str, "GL_OES_texture_npot");
if (ctx->Extensions.EXT_texture_filter_anisotropic)