1 files changed, 92 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/shadow_vert.glsl b/source/blender/draw/engines/eevee/shaders/shadow_vert.glsl
index cbfa9737a84..0e8e8dd9d01 100644
--- a/source/blender/draw/engines/eevee/shaders/shadow_vert.glsl
+++ b/source/blender/draw/engines/eevee/shaders/shadow_vert.glsl
@@ -1,5 +1,6 @@
 
 #pragma BLENDER_REQUIRE(common_view_lib.glsl)
+#pragma BLENDER_REQUIRE(common_math_lib.glsl)
 #pragma BLENDER_REQUIRE(common_hair_lib.glsl)
 #pragma BLENDER_REQUIRE(surface_lib.glsl)
 
@@ -12,6 +13,7 @@ void main()
 
 #ifdef HAIR_SHADER
   hairStrandID = hair_get_strand_id();
+  hairBary = hair_get_barycentric();
   vec3 pos, binor;
   hair_get_pos_tan_binor_time((ProjectionMatrix[3][3] == 0.0),
                               ModelMatrixInverse,
@@ -52,3 +54,93 @@ void main()
 #  endif
 #endif
 }
+
+#ifdef HAIR_SHADER
+#  ifdef OBINFO_LIB
+vec3 attr_load_orco(samplerBuffer cd_buf)
+{
+  vec3 P = hair_get_strand_pos();
+  vec3 lP = transform_point(ModelMatrixInverse, P);
+  return OrcoTexCoFactors[0].xyz + lP * OrcoTexCoFactors[1].xyz;
+}
+#  endif
+
+vec4 attr_load_tangent(samplerBuffer cd_buf)
+{
+  /* Not supported. */
+  return vec4(0.0, 0.0, 0.0, 1.0);
+}
+
+vec3 attr_load_uv(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, hairStrandID).rgb;
+}
+
+vec4 attr_load_color(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, hairStrandID).rgba;
+}
+
+vec4 attr_load_vec4(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, hairStrandID).rgba;
+}
+
+vec3 attr_load_vec3(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, hairStrandID).rgb;
+}
+
+vec2 attr_load_vec2(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, hairStrandID).rg;
+}
+
+float attr_load_float(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, hairStrandID).r;
+}
+
+#else
+
+#  ifdef OBINFO_LIB
+vec3 attr_load_orco(samplerBuffer cd_buf)
+{
+  vec3 P = hair_get_strand_pos();
+  vec3 lP = transform_point(ModelMatrixInverse, P);
+  return OrcoTexCoFactors[0].xyz + lP * OrcoTexCoFactors[1].xyz;
+}
+#  endif
+
+vec4 attr_load_tangent(vec4 tangent)
+{
+  tangent.xyz = safe_normalize(normal_object_to_world(tangent.xyz));
+  return tangent;
+}
+
+/* Simple passthrough. */
+vec4 attr_load_vec4(vec4 attr)
+{
+  return attr;
+}
+vec3 attr_load_vec3(vec3 attr)
+{
+  return attr;
+}
+vec2 attr_load_vec2(vec2 attr)
+{
+  return attr;
+}
+vec2 attr_load_float(vec2 attr)
+{
+  return attr;
+}
+vec4 attr_load_color(vec4 attr)
+{
+  return attr;
+}
+vec3 attr_load_uv(vec3 attr)
+{
+  return attr;
+}
+#endif