Added shadow baking

3 files changed, 22 insertions, 3 deletions

diff --git a/source/blender/render/extern/include/RE_pipeline.h b/source/blender/render/extern/include/RE_pipeline.h
index 66dc1dd5fef..64cf7fcb37b 100644
--- a/source/blender/render/extern/include/RE_pipeline.h
+++ b/source/blender/render/extern/include/RE_pipeline.h
@@ -220,6 +220,8 @@ void RE_zbuf_accumulate_vecblur(struct NodeBlurData *nbd, int xsize, int ysize,
 #define RE_BAKE_NORMALS			3
 #define RE_BAKE_TEXTURE			4
 #define RE_BAKE_DISPLACEMENT	5
+#define RE_BAKE_SHADOW			6
+
 void RE_Database_Baking(struct Render *re, struct Scene *scene, int type, struct Object *actob);
 
 void RE_DataBase_GetView(struct Render *re, float mat[][4]);
diff --git a/source/blender/render/intern/source/convertblender.c b/source/blender/render/intern/source/convertblender.c
index bef3690a43a..afe4c47a9a4 100644
--- a/source/blender/render/intern/source/convertblender.c
+++ b/source/blender/render/intern/source/convertblender.c
@@ -5419,6 +5419,7 @@ void RE_Database_FromScene_Vectors(Render *re, Scene *sce)
    RE_BAKE_AO:     for baking, no lamps, but all objects
    RE_BAKE_TEXTURE:for baking, no lamps, only selected objects
    RE_BAKE_DISPLACEMENT:for baking, no lamps, only selected objects
+   RE_BAKE_SHADOW: for baking, only shadows, but all objects
 */
 void RE_Database_Baking(Render *re, Scene *scene, int type, Object *actob)
 {
@@ -5449,6 +5450,10 @@ void RE_Database_Baking(Render *re, Scene *scene, int type, Object *actob)
 		re->r.mode &= ~R_RAYTRACE;
 	}
 	
+	if(!actob && (type==RE_BAKE_SHADOW)) {
+		re->r.mode |= R_SHADOW;
+	}
+	
 	/* setup render stuff */
 	re->memArena = BLI_memarena_new(BLI_MEMARENA_STD_BUFSIZE);
 	
@@ -5486,7 +5491,7 @@ void RE_Database_Baking(Render *re, Scene *scene, int type, Object *actob)
 	set_node_shader_lamp_loop(shade_material_loop);
 
 	/* MAKE RENDER DATA */
-	nolamps= !ELEM(type, RE_BAKE_LIGHT, RE_BAKE_ALL);
+	nolamps= !ELEM3(type, RE_BAKE_LIGHT, RE_BAKE_ALL, RE_BAKE_SHADOW);
 	onlyselected= ELEM3(type, RE_BAKE_NORMALS, RE_BAKE_TEXTURE, RE_BAKE_DISPLACEMENT);
 
 	database_init_objects(re, lay, nolamps, onlyselected, actob, 0);
diff --git a/source/blender/render/intern/source/rendercore.c b/source/blender/render/intern/source/rendercore.c
index ff31ba8a6ee..dae7b0dcd88 100644
--- a/source/blender/render/intern/source/rendercore.c
+++ b/source/blender/render/intern/source/rendercore.c
@@ -2017,9 +2017,12 @@ static void bake_shade(void *handle, Object *ob, ShadeInput *shi, int quad, int
 			ambient_occlusion_to_diffuse(shi, shr.combined);
 	}
 	else {
+		if (bs->type==RE_BAKE_SHADOW) /* Why do shadows set the color anyhow?, ignore material color for baking */
+			shi->r = shi->g = shi->b = 1.0f;
+	
 		shade_input_set_shade_texco(shi);
 		
-		if(!ELEM(bs->type, RE_BAKE_NORMALS, RE_BAKE_TEXTURE))
+		if(!ELEM3(bs->type, RE_BAKE_NORMALS, RE_BAKE_TEXTURE, RE_BAKE_SHADOW))
 			shade_samples_do_AO(ssamp);
 		
 		if(shi->mat->nodetree && shi->mat->use_nodes) {
@@ -2070,6 +2073,10 @@ static void bake_shade(void *handle, Object *ob, ShadeInput *shi, int quad, int
 			shr.combined[2]= shi->b;
 			shr.alpha = shi->alpha;
 		}
+		else if(bs->type==RE_BAKE_SHADOW) {
+			VECCOPY(shr.combined, shr.shad);
+			shr.alpha = shi->alpha;
+		}
 	}
 	
 	if(bs->rect_float) {
@@ -2505,7 +2512,12 @@ int RE_bake_shade_all_selected(Render *re, int type, Object *actob)
 		memset(&handles[a], 0, sizeof(BakeShade));
 		
 		handles[a].ssamp.shi[0].lay= re->scene->lay;
-		handles[a].ssamp.shi[0].passflag= SCE_PASS_COMBINED;
+		
+		if (type==RE_BAKE_SHADOW) {
+			handles[a].ssamp.shi[0].passflag= SCE_PASS_SHADOW;
+		} else {
+			handles[a].ssamp.shi[0].passflag= SCE_PASS_COMBINED;
+		}
 		handles[a].ssamp.shi[0].combinedflag= ~(SCE_PASS_SPEC);
 		handles[a].ssamp.shi[0].thread= a;
 		handles[a].ssamp.tot= 1;