gsk/gl: use GdkArrayImpl for tracking modelview

Like the previous change, this uses GdkArrayImpl instead of GArray for
tracking modelview changes. This is less important than clip tracking
simple due to being used less, but it keeps the implementation synchronous
with the Clip tracking code.

gsk/gl/gskglrenderjob.c

@@ -85,6 +85,14 @@ typedef struct _GskGLRenderModelview
   graphene_matrix_t matrix;
 } GskGLRenderModelview;
 
+#define GDK_ARRAY_NAME modelviews
+#define GDK_ARRAY_TYPE_NAME Modelviews
+#define GDK_ARRAY_ELEMENT_TYPE GskGLRenderModelview
+#define GDK_ARRAY_BY_VALUE 1
+#define GDK_ARRAY_PREALLOC 16
+#define GDK_ARRAY_NO_MEMSET
+#include "gdk/gdkarrayimpl.c"
+
 struct _GskGLRenderJob
 {
   /* The context containing the framebuffer we are drawing to. Generally this
@@ -125,7 +133,7 @@ struct _GskGLRenderJob
   /* An array of GskGLRenderModelview updated as nodes are processed. The
    * current modelview is the last element.
    */
-  GArray *modelview;
+  Modelviews modelview;
 
   /* An array of GskGLRenderClip updated as nodes are processed. The
    * current clip is the last element.
@@ -209,6 +217,14 @@ clips_grow_one (Clips *clips)
   return clips_get (clips, len);
 }
 
+static inline GskGLRenderModelview *
+modelviews_grow_one (Modelviews *modelviews)
+{
+  guint len = modelviews_get_size (modelviews);
+  modelviews_set_size (modelviews, len + 1);
+  return modelviews_get (modelviews, len);
+}
+
 static inline int
 get_target_format (GskGLRenderJob      *job,
                    const GskRenderNode *node)
@@ -478,15 +494,10 @@ gsk_gl_render_job_set_modelview (GskGLRenderJob *job,
   GskGLRenderModelview *modelview;
 
   g_assert (job != NULL);
-  g_assert (job->modelview != NULL);
 
   job->driver->stamps[UNIFORM_SHARED_MODELVIEW]++;
 
-  g_array_set_size (job->modelview, job->modelview->len + 1);
-
-  modelview = &g_array_index (job->modelview,
-                              GskGLRenderModelview,
-                              job->modelview->len - 1);
+  modelview = modelviews_grow_one (&job->modelview);
 
   modelview->transform = transform;
 
@@ -511,26 +522,17 @@ gsk_gl_render_job_push_modelview (GskGLRenderJob *job,
   GskGLRenderModelview *modelview;
 
   g_assert (job != NULL);
-  g_assert (job->modelview != NULL);
   g_assert (transform != NULL);
 
   job->driver->stamps[UNIFORM_SHARED_MODELVIEW]++;
 
-  g_array_set_size (job->modelview, job->modelview->len + 1);
+  modelview = modelviews_grow_one (&job->modelview);
 
-  modelview = &g_array_index (job->modelview,
-                              GskGLRenderModelview,
-                              job->modelview->len - 1);
-
-  if G_LIKELY (job->modelview->len > 1)
+  if G_LIKELY (modelviews_get_size (&job->modelview) > 1)
     {
-      GskGLRenderModelview *last;
+      GskGLRenderModelview *last = job->modelview.end - 2;
       GskTransform *t = NULL;
 
-      last = &g_array_index (job->modelview,
-                             GskGLRenderModelview,
-                             job->modelview->len - 2);
-
       /* Multiply given matrix with our previous modelview */
       t = gsk_transform_translate (gsk_transform_ref (last->transform),
                                    &(graphene_point_t) {
@@ -564,8 +566,7 @@ gsk_gl_render_job_pop_modelview (GskGLRenderJob *job)
   const GskGLRenderModelview *head;
 
   g_assert (job != NULL);
-  g_assert (job->modelview);
-  g_assert (job->modelview->len > 0);
+  g_assert (modelviews_get_size (&job->modelview) > 0);
 
   job->driver->stamps[UNIFORM_SHARED_MODELVIEW]++;
 
@@ -576,11 +577,11 @@ gsk_gl_render_job_pop_modelview (GskGLRenderJob *job)
 
   gsk_transform_unref (head->transform);
 
-  job->modelview->len--;
+  job->modelview.end--;
 
-  if (job->modelview->len >= 1)
+  if (modelviews_get_size (&job->modelview) >= 1)
     {
-      head = &g_array_index (job->modelview, GskGLRenderModelview, job->modelview->len - 1);
+      head = job->modelview.end - 1;
 
       job->scale_x = head->scale_x;
       job->scale_y = head->scale_y;
@@ -725,7 +726,7 @@ gsk_gl_render_job_transform_bounds (GskGLRenderJob        *job,
   GskTransformCategory category;
 
   g_assert (job != NULL);
-  g_assert (job->modelview->len > 0);
+  g_assert (modelviews_get_size (&job->modelview) > 0);
   g_assert (rect != NULL);
   g_assert (out_rect != NULL);
 
@@ -4530,7 +4531,7 @@ gsk_gl_render_job_new (GskGLDriver           *driver,
   job->driver = g_object_ref (driver);
   job->command_queue = job->driver->command_queue;
   clips_init (&job->clip);
-  job->modelview = g_array_sized_new (FALSE, FALSE, sizeof (GskGLRenderModelview), 16);
+  modelviews_init (&job->modelview);
   job->framebuffer = framebuffer;
   job->clear_framebuffer = !!clear_framebuffer;
   job->default_framebuffer = default_framebuffer;
@@ -4580,16 +4581,16 @@ gsk_gl_render_job_free (GskGLRenderJob *job)
   job->current_modelview = NULL;
   job->current_clip = NULL;
 
-  while (job->modelview->len > 0)
+  while (job->modelview.end > job->modelview.start)
     {
-      GskGLRenderModelview *modelview = &g_array_index (job->modelview, GskGLRenderModelview, job->modelview->len-1);
+      GskGLRenderModelview *modelview = job->modelview.end-1;
       g_clear_pointer (&modelview->transform, gsk_transform_unref);
-      job->modelview->len--;
+      job->modelview.end--;
     }
 
   g_clear_object (&job->driver);
   g_clear_pointer (&job->region, cairo_region_destroy);
-  g_clear_pointer (&job->modelview, g_array_unref);
+  modelviews_clear (&job->modelview);
   clips_clear (&job->clip);
   g_free (job);
 }