Shader: include cleanup.

src/Magnum/Shaders/AbstractVector.h

@@ -29,6 +29,7 @@
  * @brief Class @ref Magnum::Shaders::AbstractVector, typedef @ref Magnum::Shaders::AbstractVector2D, @ref Magnum::Shaders::AbstractVector3D
  */
 
+#include "Magnum/AbstractShaderProgram.h"
 #include "Magnum/Shaders/Generic.h"
 
 namespace Magnum { namespace Shaders {

src/Magnum/Shaders/Flat.h

@@ -29,6 +29,7 @@
  * @brief Class @ref Magnum::Shaders::Flat, typedef @ref Magnum::Shaders::Flat2D, @ref Magnum::Shaders::Flat3D
  */
 
+#include "Magnum/AbstractShaderProgram.h"
 #include "Magnum/DimensionTraits.h"
 #include "Magnum/Math/Color.h"
 #include "Magnum/Math/Matrix3.h"

src/Magnum/Shaders/Generic.h

@@ -29,7 +29,7 @@
  * @brief Struct @ref Magnum::Shaders::Generic, typedef @ref Magnum::Shaders::Generic2D, @ref Magnum::Shaders::Generic3D
  */
 
-#include "Magnum/AbstractShaderProgram.h"
+#include "Magnum/Attribute.h"
 
 namespace Magnum { namespace Shaders {
 

src/Magnum/Shaders/Phong.h

@@ -29,6 +29,7 @@
  * @brief Class @ref Magnum::Shaders::Phong
  */
 
+#include "Magnum/AbstractShaderProgram.h"
 #include "Magnum/Math/Color.h"
 #include "Magnum/Math/Matrix4.h"
 #include "Magnum/Shaders/Generic.h"

src/Magnum/Shaders/VertexColor.h

@@ -29,6 +29,7 @@
  * @brief Class @ref Magnum::Shaders::VertexColor
  */
 
+#include "Magnum/AbstractShaderProgram.h"
 #include "Magnum/DimensionTraits.h"
 #include "Magnum/Math/Color.h"
 #include "Magnum/Math/Matrix3.h"