From 8252fa5a16b9e09662ad3d2a20f78bc4e324afa6 Mon Sep 17 00:00:00 2001
From: Brecht Van Lommel <brechtvanlommel@pandora.be>
Date: Fri, 12 Mar 2010 14:42:03 +0000
Subject: Fix smoke looking black in the viewport when compiling with
 -ffast-math. (memset works on byte level and bytes -1,-1,-1,-1 = NaN).

---
 source/blender/blenkernel/intern/smoke.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'source/blender/blenkernel')

diff --git a/source/blender/blenkernel/intern/smoke.c b/source/blender/blenkernel/intern/smoke.c
index 2196e2ccd04..69209699a69 100644
--- a/source/blender/blenkernel/intern/smoke.c
+++ b/source/blender/blenkernel/intern/smoke.c
@@ -1398,11 +1398,12 @@ static void get_cell(float *p0, int res[3], float dx, float *pos, int *cell, int
 
 static void smoke_calc_transparency(float *result, float *input, float *p0, float *p1, int res[3], float dx, float *light, bresenham_callback cb, float correct)
 {
-	int z;
 	float bv[6];
-	int slabsize=res[0]*res[1];
+	int a, z, slabsize=res[0]*res[1], size= res[0]*res[1]*res[2];
+
+	for(a=0; a<size; a++)
+		result[a]= -1.0f;
 
-	memset(result, -1, sizeof(float)*res[0]*res[1]*res[2]);	// x
 	bv[0] = p0[0];
 	bv[1] = p1[0];
 	// y
-- 
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