Revision: 29548
http://projects.blender.org/plugins/scmsvn/viewcvs.php?view=rev&root=bf-blender&revision=29548
Author: blendix
Date: 2010-06-18 18:07:47 +0200 (Fri, 18 Jun 2010)
Log Message:
-----------
Render Branch: another 10% performance tweak, store child pointers and
child bb just as fixed arrays of size 4 in nodes, nearly all nodes have
this many children, so overall it actually reduces memory usage a bit
and avoids a pointer indirection.
Modified Paths:
--------------
branches/render25/source/blender/render/intern/raytrace/svbvh.h
Modified: branches/render25/source/blender/render/intern/raytrace/svbvh.h
===================================================================
--- branches/render25/source/blender/render/intern/raytrace/svbvh.h
2010-06-18 15:23:39 UTC (rev 29547)
+++ branches/render25/source/blender/render/intern/raytrace/svbvh.h
2010-06-18 16:07:47 UTC (rev 29548)
@@ -40,11 +40,9 @@
struct SVBVHNode
{
+ float child_bb[24];
+ SVBVHNode *child[4];
int nchilds;
-
- // array of bb, array of childs
- float *child_bb;
- SVBVHNode **child;
};
static int svbvh_bb_intersect_test_simd4(const Isect *isec, const __m128
*bb_group)
@@ -110,7 +108,7 @@
template<int MAX_STACK_SIZE, bool SHADOW>
static int svbvh_node_stack_raycast(SVBVHNode *root, Isect *isec)
{
- const SVBVHNode *stack[MAX_STACK_SIZE], *node;
+ SVBVHNode *stack[MAX_STACK_SIZE], *node;
int hit = 0, stack_pos = 0;
stack[stack_pos++] = root;
@@ -124,8 +122,8 @@
int nchilds= node->nchilds;
if(nchilds == 4) {
- const float *child_bb= node->child_bb;
- int res = svbvh_bb_intersect_test_simd4(isec,
((const __m128*) (child_bb)));
+ float *child_bb= node->child_bb;
+ int res = svbvh_bb_intersect_test_simd4(isec,
((__m128*) (child_bb)));
SVBVHNode **child= node->child;
RE_RC_COUNT(isec->raycounter->simd_bb.test);
@@ -136,12 +134,12 @@
if(res & 8) { stack[stack_pos++] = child[3];
RE_RC_COUNT(isec->raycounter->simd_bb.hit); }
}
else {
- const float *child_bb= node->child_bb;
+ float *child_bb= node->child_bb;
SVBVHNode **child= node->child;
int i;
for(i=0; i<nchilds; i++)
- if(svbvh_bb_intersect_test(isec, (const
float*)child_bb+6*i))
+ if(svbvh_bb_intersect_test(isec,
(float*)child_bb+6*i))
stack[stack_pos++] = child[i];
}
}
@@ -235,8 +233,6 @@
{
SVBVHNode *node = (SVBVHNode*)BLI_memarena_alloc(arena,
sizeof(SVBVHNode));
node->nchilds = nchilds;
- node->child_bb = (float*)BLI_memarena_alloc(arena,
sizeof(float)*6*nchilds);
- node->child= (SVBVHNode**)BLI_memarena_alloc(arena,
sizeof(SVBVHNode*)*nchilds);
return node;
}
_______________________________________________
Bf-blender-cvs mailing list
[email protected]
http://lists.blender.org/mailman/listinfo/bf-blender-cvs
