EEVEE-Next: Add Film and RenderBuffers module

This modules handles renderpasses allocation and filling. Also handles
blitting to viewport framebuffer and render result reading.

Changes against the old implementation:
- the filling of the renderpasses happens all at once requiring
  only 1 geometry pass.
- The filtering is optimized with weights precomputed on CPU and
  reuse of neighboor pixels.
- Only one accumulation buffer for renderpasses (no ping-pong).
- Accumulation happens in one pass for every passes using a single
  dispatch or fullscreen triangle pass.

TAA and history reprojection is not yet implemented.
AOVs support is present but with a 16 AOV limit for now.
Cryptomatte is not yet implemented.

2 files changed, 5 insertions, 0 deletions

diff --git a/source/blender/gpu/CMakeLists.txt b/source/blender/gpu/CMakeLists.txt
index d8ed74390f4..62d5537772a 100644
--- a/source/blender/gpu/CMakeLists.txt
+++ b/source/blender/gpu/CMakeLists.txt
@@ -25,6 +25,9 @@ set(INC
   # For theme color access.
   ../editors/include
 
+  # For *_info.hh includes.
+  ../draw/engines/eevee_next
+
   # For node muting stuff.
   ../nodes
 
@@ -445,6 +448,7 @@ list(APPEND INC ${CMAKE_CURRENT_BINARY_DIR})
 
 set(SRC_SHADER_CREATE_INFOS
   ../draw/engines/basic/shaders/infos/basic_depth_info.hh
+  ../draw/engines/eevee_next/shaders/infos/eevee_film_info.hh
   ../draw/engines/eevee_next/shaders/infos/eevee_material_info.hh
   ../draw/engines/eevee_next/shaders/infos/eevee_velocity_info.hh
   ../draw/engines/gpencil/shaders/infos/gpencil_info.hh
diff --git a/source/blender/gpu/GPU_shader_shared_utils.h b/source/blender/gpu/GPU_shader_shared_utils.h
index 474549d1f42..88bdad2bf76 100644
--- a/source/blender/gpu/GPU_shader_shared_utils.h
+++ b/source/blender/gpu/GPU_shader_shared_utils.h
@@ -41,6 +41,7 @@
 #  define floorf floor
 #  define ceilf ceil
 #  define sqrtf sqrt
+#  define expf exp
 
 #  define float2 vec2
 #  define float3 vec3