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, 6 insertions, 0 deletions

diff --git a/source/blender/nodes/shader/node_shader_util.h b/source/blender/nodes/shader/node_shader_util.h
index 857a9914354..dc44f0fa98f 100644
--- a/source/blender/nodes/shader/node_shader_util.h
+++ b/source/blender/nodes/shader/node_shader_util.h
@@ -95,6 +95,11 @@ typedef struct ShaderCallData {
   int dummy;
 } ShaderCallData;
 
+typedef struct XYZ_to_RGB /* Transposed #imbuf_xyz_to_rgb, passed as 3x vec3. */
+{
+  float r[3], g[3], b[3];
+} XYZ_to_RGB;
+
 void nodestack_get_vec(float *in, short type_in, bNodeStack *ns);
 
 void node_gpu_stack_from_data(struct GPUNodeStack *gs, int type, struct bNodeStack *ns);
@@ -113,6 +118,7 @@ void node_shader_gpu_tex_mapping(struct GPUMaterial *mat,
 void ntreeExecGPUNodes(struct bNodeTreeExec *exec,
                        struct GPUMaterial *mat,
                        struct bNode *output_node);
+void get_XYZ_to_RGB_for_gpu(XYZ_to_RGB *data);
 
 #ifdef __cplusplus
 }