[gtk/wip/chergert/glproto: 389/493] remove attachment save/restore

[Christian Hergert <chergert src gnome org>]

commit fb4371f60eceac6c185a710c8e954506cbbaf82a
Author: Christian Hergert <chergert redhat com>
Date:   Thu Feb 4 08:57:16 2021 -0800

    remove attachment save/restore
    
    we dont actually need this, so just delete it now

 gsk/next/gskglattachmentstate.c        | 58 ----------------------------------
 gsk/next/gskglattachmentstateprivate.h |  2 --
 gsk/next/gskglcommandqueue.c           | 26 ---------------
 gsk/next/gskglcommandqueueprivate.h    |  7 ----
 4 files changed, 93 deletions(-)
---
diff --git a/gsk/next/gskglattachmentstate.c b/gsk/next/gskglattachmentstate.c
index 5cb8f0b2d9..37d0c347fb 100644
--- a/gsk/next/gskglattachmentstate.c
+++ b/gsk/next/gskglattachmentstate.c
@@ -99,61 +99,3 @@ gsk_gl_attachment_state_bind_framebuffer (GskGLAttachmentState *self,
       self->fbo.changed = TRUE;
     }
 }
-
-/**
- * gsk_gl_attachment_state_save:
- * @self: a #GskGLAttachmentState
- *
- * Creates a copy of @self that represents the current attachments
- * as known to @self.
- *
- * This can be used to restore state later, such as after running
- * various GL commands that are external to the GL renderer.
- *
- * This must be freed by calling either gsk_gl_attachment_state_unref()
- * or gsk_gl_attachment_state_restore().
- *
- * Returns: (transfer full): a new #GskGLAttachmentState or %NULL
- */
-GskGLAttachmentState *
-gsk_gl_attachment_state_save (GskGLAttachmentState *self)
-{
-  GskGLAttachmentState *ret;
-
-  if (self == NULL)
-    return NULL;
-
-  ret = g_slice_dup (GskGLAttachmentState, self);
-  ret->fbo.changed = FALSE;
-  for (guint i = 0; i < G_N_ELEMENTS (ret->textures); i++)
-    ret->textures[i].changed = FALSE;
-
-  return g_steal_pointer (&ret);
-}
-
-/**
- * gsk_gl_attachment_state_restore:
- * @self: (transfer full): the #GskGLAttachmentState
- *
- * Restores the attachment state and frees @self.
- */
-void
-gsk_gl_attachment_state_restore (GskGLAttachmentState *self)
-{
-  if (self == NULL)
-    return;
-
-  glBindFramebuffer (GL_FRAMEBUFFER, self->fbo.id);
-
-  for (guint i = 0; i < G_N_ELEMENTS (self->textures); i++)
-    {
-      if (!self->textures[i].initial)
-        {
-          glActiveTexture (GL_TEXTURE0 + i);
-          glBindTexture (self->textures[i].target,
-                         self->textures[i].id);
-        }
-    }
-
-  g_slice_free (GskGLAttachmentState, self);
-}
diff --git a/gsk/next/gskglattachmentstateprivate.h b/gsk/next/gskglattachmentstateprivate.h
index 5decdcd615..ef45119893 100644
--- a/gsk/next/gskglattachmentstateprivate.h
+++ b/gsk/next/gskglattachmentstateprivate.h
@@ -58,8 +58,6 @@ struct _GskGLAttachmentState
 GskGLAttachmentState *gsk_gl_attachment_state_new              (void);
 GskGLAttachmentState *gsk_gl_attachment_state_ref              (GskGLAttachmentState *self);
 void                  gsk_gl_attachment_state_unref            (GskGLAttachmentState *self);
-GskGLAttachmentState *gsk_gl_attachment_state_save             (GskGLAttachmentState *self);
-void                  gsk_gl_attachment_state_restore          (GskGLAttachmentState *self);
 void                  gsk_gl_attachment_state_free             (GskGLAttachmentState *self);
 void                  gsk_gl_attachment_state_bind_texture     (GskGLAttachmentState *self,
                                                                 GLenum                target,
diff --git a/gsk/next/gskglcommandqueue.c b/gsk/next/gskglcommandqueue.c
index 0f8433bfa7..7f5b441168 100644
--- a/gsk/next/gskglcommandqueue.c
+++ b/gsk/next/gskglcommandqueue.c
@@ -227,29 +227,6 @@ gsk_gl_command_queue_capture_png (GskGLCommandQueue *self,
   g_free (data);
 }
 
-static void
-gsk_gl_command_queue_save (GskGLCommandQueue *self)
-{
-  g_assert (GSK_IS_GL_COMMAND_QUEUE (self));
-
-  g_ptr_array_add (self->saved_state,
-                   gsk_gl_attachment_state_save (self->attachments));
-}
-
-static void
-gsk_gl_command_queue_restore (GskGLCommandQueue *self)
-{
-  GskGLAttachmentState *saved;
-
-  g_assert (GSK_IS_GL_COMMAND_QUEUE (self));
-  g_assert (self->saved_state->len > 0);
-
-  saved = g_ptr_array_steal_index (self->saved_state,
-                                   self->saved_state->len - 1);
-
-  gsk_gl_attachment_state_restore (saved);
-}
-
 static void
 gsk_gl_command_queue_dispose (GObject *object)
 {
@@ -267,7 +244,6 @@ gsk_gl_command_queue_dispose (GObject *object)
   g_clear_pointer (&self->batch_draws, g_array_unref);
   g_clear_pointer (&self->batch_binds, g_array_unref);
   g_clear_pointer (&self->batch_uniforms, g_array_unref);
-  g_clear_pointer (&self->saved_state, g_ptr_array_unref);
 
   G_OBJECT_CLASS (gsk_gl_command_queue_parent_class)->dispose (object);
 }
@@ -290,7 +266,6 @@ gsk_gl_command_queue_init (GskGLCommandQueue *self)
   self->batch_binds = g_array_new (FALSE, FALSE, sizeof (GskGLCommandBind));
   self->batch_uniforms = g_array_new (FALSE, FALSE, sizeof (GskGLCommandUniform));
   self->vertices = gsk_gl_buffer_new (GL_ARRAY_BUFFER, sizeof (GskGLDrawVertex));
-  self->saved_state = g_ptr_array_new_with_free_func ((GDestroyNotify)gsk_gl_attachment_state_unref);
   self->debug_groups = g_string_chunk_new (4096);
 }
 
@@ -1025,7 +1000,6 @@ void
 gsk_gl_command_queue_end_frame (GskGLCommandQueue *self)
 {
   g_assert (GSK_IS_GL_COMMAND_QUEUE (self));
-  g_assert (self->saved_state->len == 0);
 
   gsk_gl_command_queue_make_current (self);
   gsk_gl_uniform_state_end_frame (self->uniforms);
diff --git a/gsk/next/gskglcommandqueueprivate.h b/gsk/next/gskglcommandqueueprivate.h
index 2c2e8904b9..3147fa33a8 100644
--- a/gsk/next/gskglcommandqueueprivate.h
+++ b/gsk/next/gskglcommandqueueprivate.h
@@ -221,13 +221,6 @@ struct _GskGLCommandQueue
    */
   GArray *batch_uniforms;
 
-  /* Sometimes we want to save attachment state so that operations we do
-   * cannot affect anything that is known to the command queue. We call
-   * gsk_gl_command_queue_save()/restore() which stashes attachment state
-   * into this pointer array.
-   */
-  GPtrArray *saved_state;
-
   /* String storage for debug groups */
   GStringChunk *debug_groups;