Object Info node support for GLSL mode and the internal render

Object Info node can be useful to give some variation to a single material assigned to multiple instances. This patch adds support for Viewport and BI.

{F499530}

Example: {F499528}

Reviewers: merwin, brecht, dfelinto

Reviewed By: brecht

Subscribers: duarteframos, fclem, homyachetser, Evgeny_Rodygin, AlexKowel, yurikovelenov

Differential Revision: https://developer.blender.org/D2425

source/blender/render/intern/source/renderdatabase.c

@@ -66,6 +66,7 @@
 #include "BLI_math.h"
 #include "BLI_blenlib.h"
 #include "BLI_utildefines.h"
+#include "BLI_hash.h"
 
 #include "DNA_material_types.h" 
 #include "DNA_meshdata_types.h" 
@@ -1458,6 +1459,14 @@ ObjectInstanceRen *RE_addRenderInstance(
 		}
 	}
 
+	/* Fill object info */
+	if (dob) {
+		obi->random_id = dob->random_id;
+	}
+	else {
+		obi->random_id = BLI_hash_int_2d(BLI_hash_string(obi->ob->id.name + 2), 0);
+	}
+
 	RE_updateRenderInstance(re, obi, RE_OBJECT_INSTANCES_UPDATE_OBMAT | RE_OBJECT_INSTANCES_UPDATE_VIEW);
 
 	if (mat) {

source/blender/render/intern/source/shadeoutput.c

@@ -2141,6 +2141,16 @@ const float (*RE_object_instance_get_matrix(struct ObjectInstanceRen *obi, int m
 	return NULL;
 }
 
+float RE_object_instance_get_object_pass_index(struct ObjectInstanceRen *obi)
+{
+	return obi->ob->index;
+}
+
+float RE_object_instance_get_random_id(struct ObjectInstanceRen *obi)
+{
+	return obi->random_id;
+}
+
 const float (*RE_render_current_get_matrix(int matrix_id))[4]
 {
 	switch (matrix_id) {