3D View: Move selection API to a Selection engine.

This commit moves the API of selecting faces, vertices and edges to a DRW manager engine.

Reviewers: campbellbarton, fclem

Subscribers: jbakker, brecht

Differential Revision: https://developer.blender.org/D5090

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/draw/engines/select/shaders/selection_id_frag.glsl b/source/blender/draw/engines/select/shaders/selection_id_frag.glsl
new file mode 100644
index 00000000000..ea86ddc7301
--- /dev/null
+++ b/source/blender/draw/engines/select/shaders/selection_id_frag.glsl
@@ -0,0 +1,14 @@
+
+#ifdef UNIFORM_ID
+uniform int id;
+#  define id floatBitsToUint(intBitsToFloat(id))
+#else
+flat in uint id;
+#endif
+
+out uint fragColor;
+
+void main()
+{
+  fragColor = id;
+}