EEVEE: Deferred: Large refactor

This changes drastically the implementation to leverage arbitrary writes
in order to reduce complexity, memory usage and increase speed.

Since we are no longer dependent on the framebuffer requirement, we can
allocate bigger size texture that fits all views and avoid the extra.

Transparency, holdout and emissions are no longer deferred and are now
composited using dual source blending.

The indirect lighting and raytracing is still not functional but will
also gets a large refactor on its own

1 files changed, 7 insertions, 0 deletions

diff --git a/source/blender/draw/engines/eevee/eevee_instance.cc b/source/blender/draw/engines/eevee/eevee_instance.cc
index 59270029a98..e733cf6ee06 100644
--- a/source/blender/draw/engines/eevee/eevee_instance.cc
+++ b/source/blender/draw/engines/eevee/eevee_instance.cc
@@ -109,6 +109,11 @@ void Instance::update_eval_members(void)
 
 void Instance::begin_sync()
 {
+  /* Must be sync before views. */
+  gbuffer.begin_sync();
+  hiz_front.begin_sync();
+  hiz_back.begin_sync();
+
   camera.sync();
   render_passes.sync();
   shading_passes.sync();
@@ -225,6 +230,8 @@ void Instance::end_sync(void)
   render_passes.end_sync();
   lightprobes.end_sync();
   subsurface.end_sync();
+  hiz_front.end_sync();
+  hiz_back.end_sync();
 }
 
 void Instance::render_sync(void)