video/out: make ra_fns const

video/out/d3d11/ra_d3d11.c

@@ -2256,7 +2256,7 @@ static void destroy(struct ra *ra)
     talloc_free(ra);
 }
 
-static struct ra_fns ra_fns_d3d11 = {
+static const struct ra_fns ra_fns_d3d11 = {
     .destroy            = destroy,
     .tex_create         = tex_create,
     .tex_destroy        = tex_destroy,

video/out/gpu/ra.h

@@ -5,7 +5,7 @@
 
 // Handle for a rendering API backend.
 struct ra {
-    struct ra_fns *fns;
+    const struct ra_fns *fns;
     void *priv;
 
     int glsl_version;       // GLSL version (e.g. 300 => 3.0)

video/out/opengl/ra_gl.c

@@ -4,7 +4,7 @@
 #include "utils.h"
 #include "ra_gl.h"
 
-static struct ra_fns ra_fns_gl;
+static const struct ra_fns ra_fns_gl;
 
 // For ra.priv
 struct ra_gl {
@@ -1183,7 +1183,7 @@ static void gl_debug_marker(struct ra *ra, const char *msg)
         gl_check_error(p->gl, ra->log, msg);
 }
 
-static struct ra_fns ra_fns_gl = {
+static const struct ra_fns ra_fns_gl = {
     .destroy                = gl_destroy,
     .tex_create             = gl_tex_create,
     .tex_destroy            = gl_tex_destroy,

video/out/placebo/ra_pl.c

@@ -15,7 +15,7 @@ static inline pl_gpu get_gpu(const struct ra *ra)
     return p->gpu;
 }
 
-static struct ra_fns ra_fns_pl;
+static const struct ra_fns ra_fns_pl;
 
 pl_gpu ra_pl_get(const struct ra *ra)
 {
@@ -651,7 +651,7 @@ static pl_timer get_active_timer(const struct ra *ra)
     return t->timers[t->idx_timers++];
 }
 
-static struct ra_fns ra_fns_pl = {
+static const struct ra_fns ra_fns_pl = {
     .destroy                = destroy_ra_pl,
     .tex_create             = tex_create_pl,
     .tex_destroy            = tex_destroy_pl,

video/out/wldmabuf/ra_wldmabuf.c

@@ -35,7 +35,7 @@ bool ra_compatible_format(struct ra *ra, uint32_t drm_format, uint64_t modifier)
     return vo_wayland_valid_format(wl, drm_format, modifier);
 }
 
-static struct ra_fns ra_fns_wldmabuf = {
+static const struct ra_fns ra_fns_wldmabuf = {
     .destroy                = destroy,
 };