Eevee Wavelength Node Support

This patch adds wavelength node support to Eevee, similar to how
Eevee Blackbody node works, thus it is a little off from Cycles.

Reviewed By: #eevee_viewport, fclem, brecht
Differential Revision: https://developer.blender.org/D11326

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/nodes/shader/node_shader_util.c b/source/blender/nodes/shader/node_shader_util.c
index 04c32574a65..67ed7ddd76e 100644
--- a/source/blender/nodes/shader/node_shader_util.c
+++ b/source/blender/nodes/shader/node_shader_util.c
@@ -332,3 +332,17 @@ void node_shader_gpu_tex_mapping(GPUMaterial *mat,
     }
   }
 }
+
+void get_XYZ_to_RGB_for_gpu(XYZ_to_RGB *data)
+{
+  const float *xyz_to_rgb = IMB_colormangement_get_xyz_to_rgb();
+  data->r[0] = xyz_to_rgb[0];
+  data->r[1] = xyz_to_rgb[3];
+  data->r[2] = xyz_to_rgb[6];
+  data->g[0] = xyz_to_rgb[1];
+  data->g[1] = xyz_to_rgb[4];
+  data->g[2] = xyz_to_rgb[7];
+  data->b[0] = xyz_to_rgb[2];
+  data->b[1] = xyz_to_rgb[5];
+  data->b[2] = xyz_to_rgb[8];
+}