[mutter] cogl: Remove deprecated depth_test API

[Marge Bot <marge-bot src gnome org>]

commit 74fe57b01859b20f03eda848553538824cd4baa1
Author: Fernando Monteiro <fr02monteiro gmail com>
Date:   Thu Sep 16 22:24:58 2021 +0100

    cogl: Remove deprecated depth_test API
    
    They are unused.
    
    Part-of: <https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/2058>

 cogl/cogl/cogl-context-private.h |  2 --
 cogl/cogl/cogl-context.c         |  2 --
 cogl/cogl/cogl-framebuffer.h     |  4 ----
 cogl/cogl/cogl.c                 | 20 --------------------
 cogl/cogl/cogl1-context.h        | 29 -----------------------------
 5 files changed, 57 deletions(-)
---
diff --git a/cogl/cogl/cogl-context-private.h b/cogl/cogl/cogl-context-private.h
index 5856f76e98..4702fb4d09 100644
--- a/cogl/cogl/cogl-context-private.h
+++ b/cogl/cogl/cogl-context-private.h
@@ -162,8 +162,6 @@ struct _CoglContext
   float                 depth_range_near_cache;
   float                 depth_range_far_cache;
 
-  gboolean              legacy_depth_test_enabled;
-
   CoglBuffer       *current_buffer[COGL_BUFFER_BIND_TARGET_COUNT];
 
   /* Framebuffers */
diff --git a/cogl/cogl/cogl-context.c b/cogl/cogl/cogl-context.c
index 25fdfa7fac..26c12e9f8f 100644
--- a/cogl/cogl/cogl-context.c
+++ b/cogl/cogl/cogl-context.c
@@ -277,8 +277,6 @@ cogl_context_new (CoglDisplay *display,
   context->depth_range_near_cache = 0;
   context->depth_range_far_cache = 1;
 
-  context->legacy_depth_test_enabled = FALSE;
-
   context->pipeline_cache = _cogl_pipeline_cache_new ();
 
   for (i = 0; i < COGL_BUFFER_BIND_TARGET_COUNT; i++)
diff --git a/cogl/cogl/cogl-framebuffer.h b/cogl/cogl/cogl-framebuffer.h
index 571b489988..e0848e45c8 100644
--- a/cogl/cogl/cogl-framebuffer.h
+++ b/cogl/cogl/cogl-framebuffer.h
@@ -1061,10 +1061,6 @@ cogl_framebuffer_clear4f (CoglFramebuffer *framebuffer,
  * a GPU such as #CoglTexture2D are associated with layers of the given
  * @pipeline.
  *
- * <note>This api doesn't support any of the legacy global state options such
- * as cogl_set_depth_test_enabled() or
- * cogl_set_backface_culling_enabled().</note>
- *
  * Stability: unstable
  * Since: 1.10
  * Deprecated: 1.16: Use #CoglPrimitive<!-- -->s and
diff --git a/cogl/cogl/cogl.c b/cogl/cogl/cogl.c
index 807594f1b0..562b40d9b1 100644
--- a/cogl/cogl/cogl.c
+++ b/cogl/cogl/cogl.c
@@ -73,26 +73,6 @@ _cogl_check_extension (const char *name, char * const *ext)
   return FALSE;
 }
 
-/* XXX: This API has been deprecated */
-void
-cogl_set_depth_test_enabled (gboolean setting)
-{
-  _COGL_GET_CONTEXT (ctx, NO_RETVAL);
-
-  if (ctx->legacy_depth_test_enabled == setting)
-    return;
-
-  ctx->legacy_depth_test_enabled = setting;
-}
-
-/* XXX: This API has been deprecated */
-gboolean
-cogl_get_depth_test_enabled (void)
-{
-  _COGL_GET_CONTEXT (ctx, FALSE);
-  return ctx->legacy_depth_test_enabled;
-}
-
 void
 cogl_set_backface_culling_enabled (gboolean setting)
 {
diff --git a/cogl/cogl/cogl1-context.h b/cogl/cogl/cogl1-context.h
index 755a484522..50a07ae905 100644
--- a/cogl/cogl/cogl1-context.h
+++ b/cogl/cogl/cogl1-context.h
@@ -79,35 +79,6 @@ cogl_get_option_group (void);
 COGL_EXPORT GCallback
 cogl_get_proc_address (const char *name);
 
-/**
- * cogl_set_depth_test_enabled:
- * @setting: %TRUE to enable depth testing or %FALSE to disable.
- *
- * Sets whether depth testing is enabled. If it is disabled then the
- * order that actors are layered on the screen depends solely on the
- * order specified using clutter_actor_raise() and
- * clutter_actor_lower(), otherwise it will also take into account the
- * actor's depth. Depth testing is disabled by default.
- *
- * Deprecated: 1.16: Use cogl_pipeline_set_depth_state() instead
- */
-COGL_DEPRECATED_FOR (cogl_pipeline_set_depth_state)
-COGL_EXPORT void
-cogl_set_depth_test_enabled (gboolean setting);
-
-/**
- * cogl_get_depth_test_enabled:
- *
- * Queries if depth testing has been enabled via cogl_set_depth_test_enable()
- *
- * Return value: %TRUE if depth testing is enabled, and %FALSE otherwise
- *
- * Deprecated: 1.16: Use cogl_pipeline_set_depth_state() instead
- */
-COGL_DEPRECATED_FOR (cogl_pipeline_set_depth_state)
-COGL_EXPORT gboolean
-cogl_get_depth_test_enabled (void);
-
 /**
  * cogl_set_backface_culling_enabled:
  * @setting: %TRUE to enable backface culling or %FALSE to disable.