Bugfix #24933

Compositor: Texture node only allowed 1 user, with more nodes using it
there was a thread conflict, using same memory for writing values.

Also: brought back the original intention for texture nodes, which is to
be using a "procedural image", not allocating memory for a buffer, but
only allowing to read per pixel. Commit in 2007 (!) allocated full buffers
for texture nodes, without using them even.

1 files changed, 3 insertions, 3 deletions

diff --git a/source/blender/nodes/intern/CMP_nodes/CMP_texture.c b/source/blender/nodes/intern/CMP_nodes/CMP_texture.c
index f990fa452cb..7ddd8b96ae2 100644
--- a/source/blender/nodes/intern/CMP_nodes/CMP_texture.c
+++ b/source/blender/nodes/intern/CMP_nodes/CMP_texture.c
@@ -79,7 +79,7 @@ static void texture_procedural(CompBuf *cbuf, float *out, float xco, float yco)
 	else { 
 		VECCOPY(col, nor);
 	}
-
+	
 	typecheck_compbuf_color(out, col, cbuf->type, cbuf->procedural_type);
 }
 
@@ -110,7 +110,7 @@ static void node_composit_exec_texture(void *data, bNode *node, bNodeStack **in,
 		free_compbuf(prevbuf);
 		
 		if(out[0]->hasoutput) {
-			CompBuf *stackbuf= alloc_compbuf(sizex, sizey, CB_VAL, 1); /* alloc */
+			CompBuf *stackbuf= alloc_compbuf(sizex, sizey, CB_VAL, 0); /* no buffer alloc */
 			
 			stackbuf->rect_procedural= texture_procedural;
 			stackbuf->node= node;
@@ -121,7 +121,7 @@ static void node_composit_exec_texture(void *data, bNode *node, bNodeStack **in,
 			out[0]->data= stackbuf; 
 		}
 		if(out[1]->hasoutput) {
-			CompBuf *stackbuf= alloc_compbuf(sizex, sizey, CB_RGBA, 1); /* alloc */
+			CompBuf *stackbuf= alloc_compbuf(sizex, sizey, CB_RGBA, 0); /* no buffer alloc */
 			
 			stackbuf->rect_procedural= texture_procedural;
 			stackbuf->node= node;