EEVEE: GLSL refactor/cleanup

- add the use of DRWShaderLibrary to EEVEE's glsl codebase to reduce code
complexity and duplication.
- split bsdf_common_lib.glsl into multiple sub library which are now shared
with other engines.
- the surface shader code is now more organised and have its own files.
- change default world to use a material nodetree and make lookdev shader
more clear.

Reviewed By: jbakker

Differential Revision: https://developer.blender.org/D8306

1 files changed, 3 insertions, 7 deletions

diff --git a/source/blender/draw/engines/workbench/shaders/workbench_effect_dof_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_effect_dof_frag.glsl
index 51007a9f246..71816f6ff6e 100644
--- a/source/blender/draw/engines/workbench/shaders/workbench_effect_dof_frag.glsl
+++ b/source/blender/draw/engines/workbench/shaders/workbench_effect_dof_frag.glsl
@@ -1,3 +1,6 @@
+
+#pragma BLENDER_REQUIRE(common_math_lib.glsl)
+
 /**
  * Separable Hexagonal Bokeh Blur by Colin Barré-Brisebois
  * https://colinbarrebrisebois.com/2017/04/18/hexagonal-bokeh-blur-revisited-part-1-basic-3-pass-version/
@@ -21,13 +24,6 @@ uniform sampler2D noiseTex;
 #define dof_distance dofParams.y
 #define dof_invsensorsize dofParams.z
 
-#define M_PI 3.1415926535897932 /* pi */
-
-float max_v4(vec4 v)
-{
-  return max(max(v.x, v.y), max(v.z, v.w));
-}
-
 #define weighted_sum(a, b, c, d, e, e_sum) \
   ((a)*e.x + (b)*e.y + (c)*e.z + (d)*e.w) / max(1e-6, e_sum);