Eevee: Add support for the Hair info node.

Only the random output is not supported for the moment.

1 files changed, 17 insertions, 0 deletions

diff --git a/source/blender/gpu/shaders/gpu_shader_material.glsl b/source/blender/gpu/shaders/gpu_shader_material.glsl
index d84ffe99a6b..795320df6b7 100644
--- a/source/blender/gpu/shaders/gpu_shader_material.glsl
+++ b/source/blender/gpu/shaders/gpu_shader_material.glsl
@@ -2479,6 +2479,23 @@ void node_bevel(float radius, vec3 N, out vec3 result)
 	result = N;
 }
 
+void node_hair_info(out float is_strand, out float intercept, out float thickness, out vec3 tangent, out float random)
+{
+#ifdef HAIR_SHADER
+	is_strand = 1.0;
+	intercept = hairTime;
+	thickness = hairThickness;
+	tangent = normalize(worldNormal); /* TODO fix naming */
+	random = 0.0;
+#else
+	is_strand = 0.0;
+	intercept = 0.0;
+	thickness = 0.0;
+	tangent = vec3(1.0);
+	random = 0.0;
+#endif
+}
+
 void node_displacement_object(float height, float midlevel, float scale, vec3 N, mat4 obmat, out vec3 result)
 {
 	N = (vec4(N, 0.0) * obmat).xyz;