Support multiple tangents for BI render & viewport

Normal Map node support for GLSL mode and the internal render (multiple tangents support).

The Normal Map node is a useful node which is present in the Cycles render.
It makes it possible to use normal mapping without additional material node in a node tree.
This patch implements Normal Map node for GLSL mode and the internal render.

Previously only the active UV layer was used to calculate tangents.

1 files changed, 2 insertions, 2 deletions

diff --git a/source/blender/render/intern/include/renderdatabase.h b/source/blender/render/intern/include/renderdatabase.h
index 167ebc58030..b576d69d806 100644
--- a/source/blender/render/intern/include/renderdatabase.h
+++ b/source/blender/render/intern/include/renderdatabase.h
@@ -76,7 +76,7 @@ typedef struct VlakTableNode {
 	int *origindex;
 	int totmtface, totmcol;
 	float *surfnor;
-	float *tangent;
+	float *tangent_arrays[MAX_MTFACE];
 	struct RadFace **radface;
 } VlakTableNode;
 
@@ -137,7 +137,7 @@ struct MTFace *RE_vlakren_get_tface(struct ObjectRen *obr, VlakRen *ren, int n,
 struct MCol *RE_vlakren_get_mcol(struct ObjectRen *obr, VlakRen *ren, int n, char **name, int verify);
 int *RE_vlakren_get_origindex(struct ObjectRen *obr, VlakRen *vlak, int verify);
 float *RE_vlakren_get_surfnor(struct ObjectRen *obr, VlakRen *ren, int verify);
-float *RE_vlakren_get_nmap_tangent(struct ObjectRen *obr, VlakRen *ren, int verify);
+float *RE_vlakren_get_nmap_tangent(ObjectRen *obr, VlakRen *vlak, int index, bool verify);
 RadFace **RE_vlakren_get_radface(struct ObjectRen *obr, VlakRen *ren, int verify);
 void RE_vlakren_get_normal(struct Render *re, struct ObjectInstanceRen *obi, struct VlakRen *vlr, float *nor);