vo_opengl: refactor how framebuffer depth is passed from backends

Store the determined framebuffer depth in struct GL instead of
MPGLContext. This means gl_video_set_output_depth() can be removed, and
also justifies adding new fields describing framebuffer/backend
properties to struct GL instead of having to add more functions just to
shovel the information around.

Keep in mind that mpgl_load_functions() will wipe struct GL, so the
new fields must be set before calling it.

1 files changed, 4 insertions, 8 deletions

diff --git a/video/out/opengl/video.c b/video/out/opengl/video.c
index d2fb4ac38c..a96a95b5c7 100644
--- a/video/out/opengl/video.c
+++ b/video/out/opengl/video.c
@@ -137,7 +137,6 @@ struct gl_video {
     struct gl_video_opts opts;
     bool gl_debug;
 
-    int depth_g;
     int texture_16bit_depth;    // actual bits available in 16 bit textures
 
     struct gl_shader_cache *sc;
@@ -1703,7 +1702,7 @@ static void pass_dither(struct gl_video *p)
     GL *gl = p->gl;
 
     // Assume 8 bits per component if unknown.
-    int dst_depth = p->depth_g ? p->depth_g : 8;
+    int dst_depth = gl->fb_g ? gl->fb_g : 8;
     if (p->opts.dither_depth > 0)
         dst_depth = p->opts.dither_depth;
 
@@ -2508,6 +2507,9 @@ static void init_gl(struct gl_video *p)
 
     debug_check_gl(p, "before init_gl");
 
+    MP_VERBOSE(p, "Reported display depth: R=%d, G=%d, B=%d\n",
+               gl->fb_r, gl->fb_g, gl->fb_b);
+
     gl->Disable(GL_DITHER);
 
     gl_vao_init(&p->vao, gl, sizeof(struct vertex), vertex_vao);
@@ -2744,12 +2746,6 @@ void gl_video_config(struct gl_video *p, struct mp_image_params *params)
     gl_video_reset_surfaces(p);
 }
 
-void gl_video_set_output_depth(struct gl_video *p, int r, int g, int b)
-{
-    MP_VERBOSE(p, "Display depth: R=%d, G=%d, B=%d\n", r, g, b);
-    p->depth_g = g;
-}
-
 void gl_video_set_osd_source(struct gl_video *p, struct osd_state *osd)
 {
     mpgl_osd_destroy(p->osd);