diff --git a/leenkx/blender/lnx/material/make_mesh.py b/leenkx/blender/lnx/material/make_mesh.py
index d4088e5..b021ee7 100644
--- a/leenkx/blender/lnx/material/make_mesh.py
+++ b/leenkx/blender/lnx/material/make_mesh.py
@@ -685,8 +685,10 @@ def make_forward_base(con_mesh, parse_opacity=False, transluc_pass=False):
     if '_VoxelGI' in wrd.world_defs:
         if parse_opacity:
             frag.write('indirect = traceDiffuse(wposition, n, voxels, clipmaps).rgb * albedo * voxelgiDiff;')
-            frag.write('if (roughness < 1.0 && specular > 0.0)')
-            frag.write('    indirect += traceSpecular(wposition, n, voxels, voxelsSDF, normalize(eye - wposition), roughness, clipmaps, gl_FragCoord.xy).rgb * specular * voxelgiRefl;')
+            frag.write('if (roughness < 1.0 && specular > 0.0){')
+            frag.add_uniform('sampler2D sveloc')
+            frag.write('    vec2 velocity = -textureLod(sveloc, gl_FragCoord.xy, 0.0).rg;')
+            frag.write('    indirect += traceSpecular(wposition, n, voxels, voxelsSDF, normalize(eye - wposition), roughness, clipmaps, gl_FragCoord.xy, velocity).rgb * specular * voxelgiRefl;}')
         else:
             frag.add_uniform("sampler2D voxels_diffuse")
             frag.add_uniform("sampler2D voxels_specular")
@@ -792,12 +794,10 @@ def make_forward_base(con_mesh, parse_opacity=False, transluc_pass=False):
 
     if '_VoxelRefract' in wrd.world_defs and parse_opacity:
         frag.write('if (opacity < 1.0) {')
-        frag.write('vec3 refraction = traceRefraction(wposition, n, voxels, voxelsSDF, normalize(eye - wposition), ior, roughness, clipmaps, gl_FragCoord.xy).rgb;')
+        frag.write('    vec2 velocity = -textureLod(sveloc, gl_FragCoord.xy, 0.0).rg;')
+        frag.write('    vec3 refraction = traceRefraction(wposition, n, voxels, voxelsSDF, normalize(eye - wposition), ior, roughness, clipmaps, gl_FragCoord.xy,velocity).rgb;')
         frag.write('    indirect = mix(refraction, indirect, opacity) * voxelgiRefr;')
         frag.write('    direct = mix(refraction, direct, opacity) * voxelgiRefr;')
-        frag.write('    vec3 refraction = traceRefraction(wposition, n, voxels, voxelsSDF, vVec, ior, roughness, clipmaps, texCoord).rgb * voxelgiRefr;')
-        frag.write('    indirect = mix(refraction, indirect, opacity);')
-        frag.write('    direct = mix(refraction, direct, opacity);')
         frag.write('}')
 
 def _write_material_attribs_default(frag: shader.Shader, parse_opacity: bool):