1 files changed, 80 insertions, 0 deletions
diff --git a/source/blender/draw/engines/eevee/shaders/eevee_surface_hair_vert.glsl b/source/blender/draw/engines/eevee/shaders/eevee_surface_hair_vert.glsl
new file mode 100644
index 00000000000..ed749b33463
--- /dev/null
+++ b/source/blender/draw/engines/eevee/shaders/eevee_surface_hair_vert.glsl
@@ -0,0 +1,80 @@
+
+#pragma BLENDER_REQUIRE(common_attribute_lib.glsl)
+#pragma BLENDER_REQUIRE(common_hair_lib.glsl)
+#pragma BLENDER_REQUIRE(common_math_lib.glsl)
+#pragma BLENDER_REQUIRE(common_view_lib.glsl)
+#pragma BLENDER_REQUIRE(eevee_nodetree_eval_lib.glsl)
+#pragma BLENDER_REQUIRE(eevee_surface_lib.glsl)
+
+/* TODO(fclem) remove use of macro. use interface block instead. */
+RESOURCE_ID_VARYING
+
+/* Globals to feed the load functions. */
+vec3 T;
+
+void main(void)
+{
+  bool is_persp = (ProjectionMatrix[3][3] == 0.0);
+  hair_get_pos_tan_binor_time(is_persp,
+                              ModelMatrixInverse,
+                              ViewMatrixInverse[3].xyz,
+                              ViewMatrixInverse[2].xyz,
+                              interp.P,
+                              T,
+                              interp.hair_binormal,
+                              interp.hair_time,
+                              interp.hair_thickness,
+                              interp.hair_time_width);
+
+  interp.N = cross(T, interp.hair_binormal);
+  interp.hair_strand_id = hair_get_strand_id();
+  interp.barycentric_coords = hair_get_barycentric();
+
+  PASS_RESOURCE_ID
+  attrib_load();
+
+  g_data = init_globals();
+  interp.P += nodetree_displacement();
+
+  gl_Position = point_world_to_ndc(interp.P);
+}
+
+#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, interp.hair_strand_id).rgb;
+}
+
+vec4 attr_load_color(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, interp.hair_strand_id).rgba;
+}
+
+vec4 attr_load_vec4(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, interp.hair_strand_id).rgba;
+}
+
+vec3 attr_load_vec3(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, interp.hair_strand_id).rgb;
+}
+
+vec2 attr_load_vec2(samplerBuffer cd_buf)
+{
+  return texelFetch(cd_buf, interp.hair_strand_id).rg;
+}