diff options
Diffstat (limited to 'intern/cycles/kernel/geom/geom_volume.h')
| -rw-r--r-- | intern/cycles/kernel/geom/geom_volume.h | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/intern/cycles/kernel/geom/geom_volume.h b/intern/cycles/kernel/geom/geom_volume.h index c72afa2a3a4..24430dd223b 100644 --- a/intern/cycles/kernel/geom/geom_volume.h +++ b/intern/cycles/kernel/geom/geom_volume.h @@ -53,17 +53,21 @@ ccl_device float volume_attribute_float(KernelGlobals *kg, const ShaderData *sd, float4 r = make_float4(0.0f, 0.0f, 0.0f, 0.0f); #else float4 r; + int slot = id >> 1; if(sd->flag & SD_VOLUME_CUBIC) - r = kernel_tex_image_interp_3d_ex(id, P.x, P.y, P.z, INTERPOLATION_CUBIC); + r = kernel_tex_image_interp_3d_ex(slot, P.x, P.y, P.z, INTERPOLATION_CUBIC); else - r = kernel_tex_image_interp_3d(id, P.x, P.y, P.z); + r = kernel_tex_image_interp_3d(slot, P.x, P.y, P.z); #endif if(dx) *dx = 0.0f; if(dy) *dy = 0.0f; /* todo: support float textures to lower memory usage for single floats */ - return average(float4_to_float3(r)); + if(id & 1) + return r.w; + else + return average(float4_to_float3(r)); } ccl_device float3 volume_attribute_float3(KernelGlobals *kg, const ShaderData *sd, AttributeElement elem, int id, float3 *dx, float3 *dy) @@ -73,16 +77,20 @@ ccl_device float3 volume_attribute_float3(KernelGlobals *kg, const ShaderData *s float4 r = make_float4(0.0f, 0.0f, 0.0f, 0.0f); #else float4 r; + int slot = id >> 1; if(sd->flag & SD_VOLUME_CUBIC) - r = kernel_tex_image_interp_3d_ex(id, P.x, P.y, P.z, INTERPOLATION_CUBIC); + r = kernel_tex_image_interp_3d_ex(slot, P.x, P.y, P.z, INTERPOLATION_CUBIC); else - r = kernel_tex_image_interp_3d(id, P.x, P.y, P.z); + r = kernel_tex_image_interp_3d(slot, P.x, P.y, P.z); #endif if(dx) *dx = make_float3(0.0f, 0.0f, 0.0f); if(dy) *dy = make_float3(0.0f, 0.0f, 0.0f); - return float4_to_float3(r); + if(id & 1) + return make_float3(r.w, r.w, r.w); + else + return float4_to_float3(r); } #endif |