Threaded Shadowbuffers Creation

===============================

- One shadowbuffer per thread.
- Added more break tests in shadow buffer code.
- Removed R.clipcrop global, solution is not nice yet, but at
  least threadsafe.
- Fixed bug in strand render shadow buffer code.

3 files changed, 9 insertions, 1 deletions

diff --git a/source/blender/render/intern/include/render_types.h b/source/blender/render/intern/include/render_types.h
index 84230bd4f6d..4a731878ffb 100644
--- a/source/blender/render/intern/include/render_types.h
+++ b/source/blender/render/intern/include/render_types.h
@@ -446,6 +446,10 @@ typedef struct LampRen {
 	ObjectInstanceRen *obi_last[BLENDER_MAX_THREADS];
 	
 	struct MTex *mtex[MAX_MTEX];
+
+	/* threading */
+	int thread_assigned;
+	int thread_ready;
 } LampRen;
 
 /* **************** defines ********************* */
diff --git a/source/blender/render/intern/include/shadbuf.h b/source/blender/render/intern/include/shadbuf.h
index b4f196a89fa..20a266f8579 100644
--- a/source/blender/render/intern/include/shadbuf.h
+++ b/source/blender/render/intern/include/shadbuf.h
@@ -46,6 +46,8 @@ struct ObjectRen;
 void makeshadowbuf(struct Render *re, LampRen *lar);
 void freeshadowbuf(struct LampRen *lar);
 
+void threaded_makeshadowbufs(struct Render *re);
+
 /**
  * Determines the shadow factor for a face and lamp. There is some
  * communication with global variables here.
diff --git a/source/blender/render/intern/include/zbuf.h b/source/blender/render/intern/include/zbuf.h
index 5f1aa5679bf..4d30c1e0dfb 100644
--- a/source/blender/render/intern/include/zbuf.h
+++ b/source/blender/render/intern/include/zbuf.h
@@ -91,6 +91,8 @@ typedef struct ZSpan {
 	float shad_alpha;						/* copy from material, used by irregular shadbuf */
 	int mask, apsmcounter;					/* in use by apixbuf */
 
+	float clipcrop;							/* for shadow, was in R global before */
+
 	void *sss_handle;						/* used by sss */
 	void (*sss_func)(void *, int, int, int, int, int);
 	
@@ -108,7 +110,7 @@ void zspan_scanconvert(struct ZSpan *zpan, void *handle, float *v1, float *v2, f
 
 /* exported to edge render... */
 void zbufclip(struct ZSpan *zspan, int obi, int zvlnr, float *f1, float *f2, float *f3, int c1, int c2, int c3);
-void zbuf_alloc_span(struct ZSpan *zspan, int rectx, int recty);
+void zbuf_alloc_span(struct ZSpan *zspan, int rectx, int recty, float clipcrop);
 void zbufclipwire(struct ZSpan *zspan, int obi, int zvlnr, int ec, float *ho1, float *ho2, float *ho3, float *ho4, int c1, int c2, int c3, int c4);
 
 /* exported to shadeinput.c */