No need to have `const` also in function declarations.

src/Text/AbstractFont.h

@@ -96,7 +96,7 @@ class MAGNUM_TEXT_EXPORT AbstractFont: public Corrade::PluginManager::AbstractPl
          *
          * Fills the cache with given characters.
          */
-        virtual void createGlyphCache(GlyphCache* const cache, const std::string& characters) = 0;
+        virtual void createGlyphCache(GlyphCache* cache, const std::string& characters) = 0;
 
         /**
          * @brief Layout the text using font own layouter
@@ -106,7 +106,7 @@ class MAGNUM_TEXT_EXPORT AbstractFont: public Corrade::PluginManager::AbstractPl
          *
          * @see createGlyphCache()
          */
-        virtual AbstractLayouter* layout(const GlyphCache* const cache, const Float size, const std::string& text) = 0;
+        virtual AbstractLayouter* layout(const GlyphCache* cache, Float size, const std::string& text) = 0;
 
     #ifdef DOXYGEN_GENERATING_OUTPUT
     private:
@@ -144,7 +144,7 @@ class MAGNUM_TEXT_EXPORT AbstractLayouter {
          * Returns quad position, texture coordinates and advance to next
          * glyph.
          */
-        virtual std::tuple<Rectangle, Rectangle, Vector2> renderGlyph(const Vector2& cursorPosition, const UnsignedInt i) = 0;
+        virtual std::tuple<Rectangle, Rectangle, Vector2> renderGlyph(const Vector2& cursorPosition, UnsignedInt i) = 0;
 
     #ifdef DOXYGEN_GENERATING_OUTPUT
     private:

src/Text/DistanceFieldGlyphCache.h

@@ -72,7 +72,7 @@ class MAGNUM_TEXT_EXPORT DistanceFieldGlyphCache: public GlyphCache {
          * Uploads image for one or more glyphs to given offset in original
          * cache texture. The texture is then converted to distance field.
          */
-        void setImage(const Vector2i& offset, Image2D* const image) override;
+        void setImage(const Vector2i& offset, Image2D* image) override;
 
         /**
          * @brief Set distance field cache image
@@ -80,7 +80,7 @@ class MAGNUM_TEXT_EXPORT DistanceFieldGlyphCache: public GlyphCache {
          * Uploads already computed distance field image to given offset in
          * distance field texture.
          */
-        void setDistanceFieldImage(const Vector2i& offset, Image2D* const image);
+        void setDistanceFieldImage(const Vector2i& offset, Image2D* image);
 
     private:
         const Vector2 scale;

src/Text/GlyphCache.h

@@ -62,7 +62,7 @@ class MAGNUM_TEXT_EXPORT GlyphCache {
          * @param size              Glyph cache texture size
          * @param internalFormat    Internal texture format
          */
-        explicit GlyphCache(const Vector2i& size, const Texture2D::InternalFormat internalFormat);
+        explicit GlyphCache(const Vector2i& size, Texture2D::InternalFormat internalFormat);
 
         /**
          * @brief Constructor
@@ -97,7 +97,7 @@ class MAGNUM_TEXT_EXPORT GlyphCache {
          * second element is glyph region in texture atlas. If no glyph is
          * found, glyph on zero index is returned.
          */
-        inline std::pair<Vector2i, Rectanglei> operator[](const UnsignedInt glyph) const {
+        inline std::pair<Vector2i, Rectanglei> operator[](UnsignedInt glyph) const {
             auto it = glyphs.find(glyph);
             return it == glyphs.end() ? glyphs.at(0) : it->second;
         }
@@ -124,7 +124,7 @@ class MAGNUM_TEXT_EXPORT GlyphCache {
          * You can obtain unused non-overlapping regions with reserve(). See
          * also setImage() to upload glyph image.
          */
-        void insert(const UnsignedInt glyph, Vector2i position, Rectanglei rectangle);
+        void insert(UnsignedInt glyph, Vector2i position, Rectanglei rectangle);
 
         /**
          * @brief Set cache image
@@ -132,7 +132,7 @@ class MAGNUM_TEXT_EXPORT GlyphCache {
          * Uploads image for one or more glyphs to given offset in cache
          * texture.
          */
-        virtual void setImage(const Vector2i& offset, Image2D* const image);
+        virtual void setImage(const Vector2i& offset, Image2D* image);
 
     #ifdef DOXYGEN_GENERATING_OUTPUT
     private:
@@ -142,7 +142,7 @@ class MAGNUM_TEXT_EXPORT GlyphCache {
         /* Used from DistanceFieldGlyphCache */
         explicit MAGNUM_LOCAL GlyphCache(const Vector2i& size, const Vector2i& padding);
 
-        void MAGNUM_LOCAL initialize(const Texture2D::InternalFormat internalFormat, const Vector2i& size);
+        void MAGNUM_LOCAL initialize(Texture2D::InternalFormat internalFormat, const Vector2i& size);
 
         const Vector2i _size;
         Texture2D _texture;

src/Text/TextRenderer.h

@@ -60,7 +60,7 @@ class MAGNUM_TEXT_EXPORT AbstractTextRenderer {
          * Returns tuple with vertex positions, texture coordinates, indices
          * and rectangle spanning the rendered text.
          */
-        static std::tuple<std::vector<Vector2>, std::vector<Vector2>, std::vector<UnsignedInt>, Rectangle> render(AbstractFont* const font, const GlyphCache* const cache, Float size, const std::string& text);
+        static std::tuple<std::vector<Vector2>, std::vector<Vector2>, std::vector<UnsignedInt>, Rectangle> render(AbstractFont* font, const GlyphCache* cache, Float size, const std::string& text);
 
         /**
          * @brief Constructor
@@ -68,7 +68,7 @@ class MAGNUM_TEXT_EXPORT AbstractTextRenderer {
          * @param cache         Glyph cache
          * @param size          Font size
          */
-        explicit AbstractTextRenderer(AbstractFont* const font, const GlyphCache* const cache, Float size);
+        explicit AbstractTextRenderer(AbstractFont* font, const GlyphCache* cache, Float size);
 
         virtual ~AbstractTextRenderer() = 0;
 
@@ -97,7 +97,7 @@ class MAGNUM_TEXT_EXPORT AbstractTextRenderer {
          * Initially zero capacity is reserved.
          * @see capacity()
          */
-        void reserve(const UnsignedInt glyphCount, const Buffer::Usage vertexBufferUsage, const Buffer::Usage indexBufferUsage);
+        void reserve(UnsignedInt glyphCount, Buffer::Usage vertexBufferUsage, Buffer::Usage indexBufferUsage);
 
         /**
          * @brief Render text
@@ -117,7 +117,7 @@ class MAGNUM_TEXT_EXPORT AbstractTextRenderer {
     #else
     private:
     #endif
-        static std::tuple<Mesh, Rectangle> MAGNUM_LOCAL render(AbstractFont* const font, const GlyphCache* const cache, Float size, const std::string& text, Buffer* vertexBuffer, Buffer* indexBuffer, Buffer::Usage usage);
+        static std::tuple<Mesh, Rectangle> MAGNUM_LOCAL render(AbstractFont* font, const GlyphCache* cache, Float size, const std::string& text, Buffer* vertexBuffer, Buffer* indexBuffer, Buffer::Usage usage);
 
         Mesh _mesh;
         Buffer vertexBuffer, indexBuffer;

src/TextureTools/DistanceField.h

@@ -67,7 +67,7 @@ http://www.valvesoftware.com/publications/2007/SIGGRAPH2007_AlphaTestedMagnifica
 
 @attention This is GPU-only implementation, so it expects active context.
 */
-void MAGNUM_TEXTURETOOLS_EXPORT distanceField(Texture2D* input, Texture2D* output, const Rectanglei& rectangle, const Int radius);
+void MAGNUM_TEXTURETOOLS_EXPORT distanceField(Texture2D* input, Texture2D* output, const Rectanglei& rectangle, Int radius);
 
 }}
 

src/Trade/AbstractImageConverter.h

@@ -91,7 +91,7 @@ class MAGNUM_EXPORT AbstractImageConverter: public Corrade::PluginManager::Abstr
          * Returns converted image on success, `nullptr` otherwise.
          * @see features(), convertToData(), convertToFile()
          */
-        virtual Image2D* convertToImage(const Image2D* const image) const;
+        virtual Image2D* convertToImage(const Image2D* image) const;
 
         /**
          * @brief Convert image to raw data
@@ -100,7 +100,7 @@ class MAGNUM_EXPORT AbstractImageConverter: public Corrade::PluginManager::Abstr
          * Returns data pointer and size on success, `nullptr` otherwise.
          * @see features(), convertToImage(), convertToFile()
          */
-        virtual std::pair<const unsigned char*, std::size_t> convertToData(const Image2D* const image) const;
+        virtual std::pair<const unsigned char*, std::size_t> convertToData(const Image2D* image) const;
 
         /**
          * @brief Convert image and save it to file
@@ -109,7 +109,7 @@ class MAGNUM_EXPORT AbstractImageConverter: public Corrade::PluginManager::Abstr
          * Returns `true` on success, `false` otherwise.
          * @see features(), convertToImage(), convertToData()
          */
-        virtual bool convertToFile(const Image2D* const image, const std::string& filename) const;
+        virtual bool convertToFile(const Image2D* image, const std::string& filename) const;
 };
 
 CORRADE_ENUMSET_OPERATORS(AbstractImageConverter::Features)