[gtk/ngl-rect-borders: 2/2] ngl: Render simple borders simply

[Matthias Clasen <matthiasc src gnome org>]

commit 5ae9df9ddc7d86579eeea0d5efb52a799be693e7
Author: Matthias Clasen <mclasen redhat com>
Date:   Mon Mar 8 21:37:28 2021 -0500

    ngl: Render simple borders simply
    
    Use 4 color commands for uniform, rectilinear
    borders. Most of our borders are rounded with
    Adwaita, but there are still some of these.

 gsk/ngl/gsknglrenderjob.c | 46 +++++++++++++++++++++++++++++++++++++++++++++-
 1 file changed, 45 insertions(+), 1 deletion(-)
---
diff --git a/gsk/ngl/gsknglrenderjob.c b/gsk/ngl/gsknglrenderjob.c
index 9eb880b842..58fe698fe3 100644
--- a/gsk/ngl/gsknglrenderjob.c
+++ b/gsk/ngl/gsknglrenderjob.c
@@ -1683,6 +1683,47 @@ sort_border_sides (const GdkRGBA *colors,
     }
 }
 
+static inline void
+gsk_ngl_render_job_visit_rect_border_node (GskNglRenderJob     *job,
+                                           const GskRenderNode *node)
+{
+  const GdkRGBA *colors = gsk_border_node_get_colors (node);
+  const float *widths = gsk_border_node_get_widths (node);
+  graphene_rect_t rect;
+
+  gsk_ngl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color));
+
+  gsk_ngl_program_set_uniform_color (job->current_program,
+                                     UNIFORM_INSET_SHADOW_COLOR, 0,
+                                     &colors[0]);
+
+  rect.origin.x = node->bounds.origin.x;
+  rect.origin.y = node->bounds.origin.y;
+  rect.size.width = node->bounds.size.width - widths[1];
+  rect.size.height = widths[0];
+  gsk_ngl_render_job_draw_rect (job, &rect);
+
+  rect.origin.x = node->bounds.origin.x + node->bounds.size.width - widths[1];
+  rect.origin.y = node->bounds.origin.y;
+  rect.size.width = widths[1];
+  rect.size.height = node->bounds.size.height - widths[2];
+  gsk_ngl_render_job_draw_rect (job, &rect);
+
+  rect.origin.x = node->bounds.origin.x + widths[3];
+  rect.origin.y = node->bounds.origin.y + node->bounds.size.height - widths[2];
+  rect.size.width = node->bounds.size.width - widths[1];
+  rect.size.height = widths[2];
+  gsk_ngl_render_job_draw_rect (job, &rect);
+
+  rect.origin.x = node->bounds.origin.x;
+  rect.origin.y = node->bounds.origin.y + widths[0];
+  rect.size.width = widths[3];
+  rect.size.height = node->bounds.size.height - widths[0];
+  gsk_ngl_render_job_draw_rect (job, &rect);
+
+  gsk_ngl_render_job_end_draw (job);
+}
+
 static inline void
 gsk_ngl_render_job_visit_uniform_border_node (GskNglRenderJob     *job,
                                               const GskRenderNode *node)
@@ -3414,7 +3455,10 @@ gsk_ngl_render_job_visit_node (GskNglRenderJob     *job,
     break;
 
     case GSK_BORDER_NODE:
-      if (gsk_border_node_get_uniform (node))
+      if (gsk_border_node_get_uniform_color (node) &&
+          gsk_rounded_rect_is_rectilinear (gsk_border_node_get_outline (node)))
+        gsk_ngl_render_job_visit_rect_border_node (job, node);
+      else if (gsk_border_node_get_uniform (node))
         gsk_ngl_render_job_visit_uniform_border_node (job, node);
       else
         gsk_ngl_render_job_visit_border_node (job, node);