Eevee: World nodetree gpumaterial compatibility.

- Unify GPUMaterial creation (world/mesh).
- Support for multiple shader variations (not used for now).
- Convert GPUInputs to DRWUniforms to be used with the draw manager.
- Nodetree Update is not supported. The only way to refresh the shaders is to change render engine.
- Cleanup in GPUPass.
- Add new temporary Node Compatibility type. Compatibility types should be removed in the future.

4 files changed, 5 insertions, 7 deletions

diff --git a/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl b/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
index fddc9c54cb2..ef8af646ec1 100644
--- a/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
+++ b/source/blender/draw/engines/eevee/shaders/bsdf_common_lib.glsl
@@ -54,7 +54,7 @@ struct ShadowMapData {
 #define sh_map_bias   near_far_bias.z
 
 #ifndef MAX_CASCADE_NUM
-#define MAX_CASCADE_NUM 1
+#define MAX_CASCADE_NUM 4
 #endif
 
 struct ShadowCascadeData {
@@ -94,8 +94,6 @@ vec4 saturate(vec4 a) { return vec4(saturate(a.x), saturate(a.y), saturate(a.z),
 float distance_squared(vec2 a, vec2 b) { a -= b; return dot(a, a); }
 float distance_squared(vec3 a, vec3 b) { a -= b; return dot(a, a); }
 
-float hypot(float x, float y) { return sqrt(x*x + y*y); }
-
 float inverse_distance(vec3 V) { return max( 1 / length(V), 1e-8); }
 
 float line_plane_intersect_dist(vec3 lineorigin, vec3 linedirection, vec3 planeorigin, vec3 planenormal)
diff --git a/source/blender/draw/engines/eevee/shaders/default_frag.glsl b/source/blender/draw/engines/eevee/shaders/default_frag.glsl
index 4cb229e392b..8d4a1e6d523 100644
--- a/source/blender/draw/engines/eevee/shaders/default_frag.glsl
+++ b/source/blender/draw/engines/eevee/shaders/default_frag.glsl
@@ -3,9 +3,11 @@ uniform vec3 diffuse_col;
 uniform vec3 specular_col;
 uniform int hardness;
 
+out vec4 FragColor;
+
 void main()
 {
 	float roughness = 1.0 - float(hardness) / 511.0;
 	roughness *= roughness;
-	fragColor = vec4(eevee_surface_lit(worldNormal, diffuse_col, specular_col, roughness), 1.0);
+	FragColor = vec4(eevee_surface_lit(worldNormal, diffuse_col, specular_col, roughness), 1.0);
 }
diff --git a/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl b/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl
index 7a0a7b8da91..10d9ce7c4c0 100644
--- a/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl
+++ b/source/blender/draw/engines/eevee/shaders/lit_surface_frag.glsl
@@ -28,8 +28,6 @@ layout(std140) uniform shadow_block {
 in vec3 worldPosition;
 in vec3 worldNormal;
 
-out vec4 fragColor;
-
 /* type */
 #define POINT    0.0
 #define SUN      1.0
diff --git a/source/blender/draw/engines/eevee/shaders/probe_geom.glsl b/source/blender/draw/engines/eevee/shaders/probe_geom.glsl
index ad112977e9f..5f79e1c6eb8 100644
--- a/source/blender/draw/engines/eevee/shaders/probe_geom.glsl
+++ b/source/blender/draw/engines/eevee/shaders/probe_geom.glsl
@@ -8,7 +8,7 @@ in vec4 vPos[];
 in int face[];
 
 out vec3 worldPosition;
-out vec3 worldNormal;
+out vec3 worldNormal; /* Required. otherwise generate linking error on AMD. */
 
 const vec3 maj_axes[6] = vec3[6](vec3(1.0,  0.0,  0.0), vec3(-1.0,  0.0, 0.0), vec3(0.0, 1.0, 0.0), vec3(0.0, -1.0,  0.0), vec3( 0.0,  0.0, 1.0), vec3( 0.0,  0.0, -1.0));
 const vec3 x_axis[6]   = vec3[6](vec3(0.0,  0.0, -1.0), vec3( 0.0,  0.0, 1.0), vec3(1.0, 0.0, 0.0), vec3(1.0,  0.0,  0.0), vec3( 1.0,  0.0, 0.0), vec3(-1.0,  0.0,  0.0));