1 files changed, 24 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/surface_lib.glsl b/source/blender/draw/engines/eevee/shaders/surface_lib.glsl
new file mode 100644
index 00000000000..638ddf0dc4c
--- /dev/null
+++ b/source/blender/draw/engines/eevee/shaders/surface_lib.glsl
@@ -0,0 +1,24 @@
+/** This describe the entire interface of the shader.  */
+
+/* Samplers */
+uniform sampler2D colorBuffer;
+uniform sampler2D depthBuffer;
+
+/* Uniforms */
+uniform float refractionDepth;
+
+IN_OUT ShaderStageInterface
+{
+  vec3 worldPosition;
+  vec3 viewPosition;
+  vec3 worldNormal;
+  vec3 viewNormal;
+
+#ifdef HAIR_SHADER
+  vec3 hairTangent; /* world space */
+  float hairThickTime;
+  float hairThickness;
+  float hairTime;
+  flat int hairStrandID;
+#endif
+};