Added constexpr to inline const functions where possible.

src/BufferedImage.h

@@ -50,7 +50,7 @@ template<size_t imageDimensions> class BufferedImage: public AbstractImage {
         BufferedImage(Components components, ComponentType type): AbstractImage(components, type), _buffer(Buffer::Target::PixelPack) {}
 
         /** @brief %Image dimensions */
-        inline Math::Vector<Dimensions, GLsizei> dimensions() const { return _dimensions; }
+        inline constexpr Math::Vector<Dimensions, GLsizei> dimensions() const { return _dimensions; }
 
         /**
          * @brief Data

src/Image.h

@@ -77,10 +77,10 @@ template<size_t imageDimensions> class Image: public AbstractImage {
         inline ~Image() { delete[] _data; }
 
         /** @brief %Image dimensions */
-        inline const Math::Vector<Dimensions, GLsizei>& dimensions() const { return _dimensions; }
+        inline constexpr const Math::Vector<Dimensions, GLsizei>& dimensions() const { return _dimensions; }
 
         /** @brief Pointer to raw data */
-        inline const void* data() const { return _data; }
+        inline constexpr const void* data() const { return _data; }
 
         /**
          * @brief Set image data

src/Texture.h

@@ -103,7 +103,7 @@ template<size_t textureDimensions> class Texture: public AbstractTexture {
         inline Texture(GLint layer = 0, Target target = DataHelper<Dimensions>::target()): AbstractTexture(layer, static_cast<GLenum>(target)) {}
 
         /** @brief %Texture target */
-        inline Target target() const { return static_cast<Target>(_target); }
+        inline constexpr Target target() const { return static_cast<Target>(_target); }
 
         /**
          * @brief Set wrapping

src/Trade/ImageData.h

@@ -62,10 +62,10 @@ template<size_t imageDimensions> class ImageData: public AbstractImage {
         inline ~ImageData() { delete[] _data; }
 
         /** @brief %Image dimensions */
-        inline const Math::Vector<Dimensions, GLsizei>& dimensions() const { return _dimensions; }
+        inline constexpr const Math::Vector<Dimensions, GLsizei>& dimensions() const { return _dimensions; }
 
         /** @brief Pointer to raw data */
-        inline const void* data() const { return _data; }
+        inline constexpr const void* data() const { return _data; }
 
     private:
         Math::Vector<Dimensions, GLsizei> _dimensions;