star-2d

commit 17f2ac4e9322ab6b88ab7ea33524c1938436ffc8
parent 2e74745c9d1e0c558f0d138d61c7e6fae2a58eb5
Author: Vincent Forest <vincent.forest@meso-star.com>
Date:   Mon, 20 Jun 2016 09:37:28 +0200

Implement the line_segments_copy_indexed_vertices back-end function

Diffstat:
M
src/s2d_line_segments.c
 | 
59
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 59 insertions(+), 0 deletions(-)
diff --git a/src/s2d_line_segments.c b/src/s2d_line_segments.c
@@ -503,3 +503,62 @@ line_segments_compute_aabb
   }
 }
 
+void
+line_segments_copy_indexed_vertices
+  (const struct line_segments* src,
+   struct line_segments* dst)
+{
+  size_t nsegments_src;
+  size_t nsegments_dst;
+  size_t nverts_src;
+  size_t nverts_dst;
+  int i;
+  ASSERT(src && dst);
+
+  nsegments_src = line_segments_get_nsegments(src);
+  nsegments_dst = line_segments_get_nsegments(dst);
+  nverts_src = line_segments_get_nsegments(src);
+  nverts_dst = line_segments_get_nsegments(dst);
+
+  /* Setup indexe buffer masks */
+  if(nsegments_src == nsegments_dst) {
+    dst->update_mask = (INDEX_BUFFER & !dst->resize_mask);
+  } else {
+    dst->resize_mask |=  INDEX_BUFFER;
+    dst->update_mask &= !INDEX_BUFFER;
+  }
+
+  /* Release the previous index buffer of dst */
+  if(dst->indices) {
+    index_buffer_ref_put(dst->indices);
+    dst->indices = NULL;
+  }
+  /* Get a reference onto the index buffer of src */
+  if(src->indices) {
+    index_buffer_ref_get(src->indices);
+    dst->indices = src->indices;
+  }
+
+  /* Setup the vertex buffer masks */
+  if(nverts_src == nverts_dst) {
+    dst->update_mask = (VERTEX_BUFFER & ~dst->resize_mask);
+  } else {
+    dst->resize_mask |=  VERTEX_BUFFER;
+    dst->update_mask &= !VERTEX_BUFFER;
+  }
+
+  FOR_EACH(i, 0, S2D_ATTRIBS_COUNT__) {
+    /* Release the previous vertex buffers of dst */
+    if(dst->attribs[i]) {
+      vertex_buffer_ref_put(dst->attribs[i]);
+      dst->attribs[i] = NULL;
+    }
+    /* Get a reference onto the vertex buffers of src */
+    if(src->attribs[i]) {
+      vertex_buffer_ref_get(src->attribs[i]);
+      dst->attribs[i] = src->attribs[i];
+      dst->attribs_type[i] = src->attribs_type[i];
+    }
+  }
+}
+