shithub: libobj

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improve allocation strategies for Index and Vertex arrays

--- a/obj.c

+++ b/obj.c

@@ -271,7 +271,8 @@

 static int

 addvertva(OBJVertexArray *va, OBJVertex v)

 {

-	va->verts = erealloc(va->verts, (va->nvert + 1)*sizeof(OBJVertex));

+	if(va->nvert % 4 == 0)

+		va->verts = erealloc(va->verts, (va->nvert + 4)*sizeof(OBJVertex));

 	va->verts[va->nvert++] = v;

 	return va->nvert-1;

 }

@@ -310,7 +311,8 @@

 	OBJIndexArray *tab;

 	tab = &e->indextab[idxtab];

-	tab->indices = erealloc(tab->indices, (tab->nindex + 1)*sizeof(int));

+	if(tab->nindex % 4 == 0)

+		tab->indices = erealloc(tab->indices, (tab->nindex + 4)*sizeof(int));

 	tab->indices[tab->nindex++] = idx;

 }

-- 

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