1 files changed, 46 insertions, 0 deletions
diff --git a/source/blender/gpu/shaders/material/gpu_shader_material_hair.glsl b/source/blender/gpu/shaders/material/gpu_shader_material_hair.glsl
new file mode 100644
index 00000000000..7bf8795495a
--- /dev/null
+++ b/source/blender/gpu/shaders/material/gpu_shader_material_hair.glsl
@@ -0,0 +1,46 @@
+
+void node_bsdf_hair(vec4 color,
+                    float offset,
+                    float roughness_u,
+                    float roughness_v,
+                    vec3 T,
+                    float weight,
+                    out Closure result)
+{
+  ClosureHair hair_data;
+  hair_data.weight = weight;
+  hair_data.color = color.rgb;
+  hair_data.offset = offset;
+  hair_data.roughness = vec2(roughness_u, roughness_v);
+  hair_data.T = T;
+
+  result = closure_eval(hair_data);
+}
+
+void node_bsdf_hair_principled(vec4 color,
+                               float melanin,
+                               float melanin_redness,
+                               vec4 tint,
+                               vec3 absorption_coefficient,
+                               float roughness,
+                               float radial_roughness,
+                               float coat,
+                               float ior,
+                               float offset,
+                               float random_color,
+                               float random_roughness,
+                               float random,
+                               float weight,
+                               out Closure result)
+{
+  /* Placeholder closure.
+   * Some computation will have to happen here just like the Principled BSDF. */
+  ClosureHair hair_data;
+  hair_data.weight = weight;
+  hair_data.color = color.rgb;
+  hair_data.offset = offset;
+  hair_data.roughness = vec2(0.0);
+  hair_data.T = g_data.T;
+
+  result = closure_eval(hair_data);
+}