vo_opengl: make fbotex helper use ra

Further work removing GL dependencies from the actual video renderer,
and moving them into ra backends.

Use of glInvalidateFramebuffer() falls away. I'd like to keep this, but
it's better to readd it once shader runs are in ra.

1 files changed, 1 insertions, 0 deletions

diff --git a/video/out/opengl/ra_gl.h b/video/out/opengl/ra_gl.h
index 9d5cb23fb7..d17b576afc 100644
--- a/video/out/opengl/ra_gl.h
+++ b/video/out/opengl/ra_gl.h
@@ -13,6 +13,7 @@ struct ra_gl {
 struct ra_tex_gl {
     GLenum target;
     GLuint texture;
+    GLuint fbo; // 0 if no rendering requested
     // These 3 fields can be 0 if unknown.
     GLint internal_format;
     GLenum format;