gl-renderer: Only check for subimage when we have extension at compile time

If weston is compiled against a gl2ext.h that doesn't have the subimage
extension, but then run against a gles2 library that does provide it,
we end up disabling the glTexImage2D falback without having the subimage
code paths compiled in.

diff --git a/src/gl-renderer.c b/src/gl-renderer.c
index ab8dc2f..e321211 100644 (file)
--- a/src/gl-renderer.c
+++ b/src/gl-renderer.c
@@ -2085,8 +2085,10 @@ gl_renderer_setup(struct weston_compositor *ec, EGLSurface egl_surface)
        else
                ec->read_format = PIXMAN_a8b8g8r8;
 
+#ifdef GL_EXT_unpack_subimage
        if (strstr(extensions, "GL_EXT_unpack_subimage"))
                gr->has_unpack_subimage = 1;
+#endif
 
        if (strstr(extensions, "GL_OES_EGL_image_external"))
                gr->has_egl_image_external = 1;