message: exports in common
diff: #include <visionaray/math/forward.h>
  #include <visionaray/math/vector.h>
  -#include "../export.h"
  -
  namespace visionaray
  {
  namespace sg
  @@ -22,7 +20,7 @@ namespace sg
  // Material base class
  //
  -class VSNRAY_COMMON_EXPORT material
  +class material
  {
  public:
  virtual ~material() {}
  @@ -40,7 +38,7 @@ private:
  // Wavefront obj material
  //
  -struct VSNRAY_COMMON_EXPORT obj_material : material
  +struct obj_material : material
  {
  // Ambient color
  vec3 ca = { 0.2f, 0.2f, 0.2f };
  @@ -78,7 +76,7 @@ struct VSNRAY_COMMON_EXPORT obj_material : material
  // Glass material
  //
  -struct VSNRAY_COMMON_EXPORT glass_material : material
  +struct glass_material : material
  {
  // Transmissive color
  vec3 ct = { 0.8f, 0.8f, 0.8f };
  @@ -95,7 +93,7 @@ struct VSNRAY_COMMON_EXPORT glass_material : material
  // Metal material
  //
  -struct VSNRAY_COMMON_EXPORT metal_material : material
  +struct metal_material : material
  {
  // Roughness
  float roughness = 0.0f;
  @@ -112,7 +110,7 @@ struct VSNRAY_COMMON_EXPORT metal_material : material
  // Disney principled material
  //
  -struct VSNRAY_COMMON_EXPORT disney_material : material
  +struct disney_material : material
  {
  // Base color
  vec4 base_color = vec4(0.0f);
  