Added mipmaps to sfRenderTexture and sfTexture.

include/SFML/Graphics/RenderTexture.h

@@ -316,4 +316,20 @@ CSFML_GRAPHICS_API void sfRenderTexture_setRepeated(sfRenderTexture* renderTextu
 ////////////////////////////////////////////////////////////
 CSFML_GRAPHICS_API sfBool sfRenderTexture_isRepeated(const sfRenderTexture* renderTexture);
 
+////////////////////////////////////////////////////////////
+/// \brief Generate a mipmap using the current texture data
+///
+/// This function is similar to sfTexture_generateMipmap and operates
+/// on the texture used as the target for drawing.
+/// Be aware that any draw operation may modify the base level image data.
+/// For this reason, calling this function only makes sense after all
+/// drawing is completed and display has been called. Not calling display
+/// after subsequent drawing will lead to undefined behavior if a mipmap
+/// had been previously generated.
+///
+/// \return sfTrue if mipmap generation was successful, sfFalse if unsuccessful
+///
+////////////////////////////////////////////////////////////
+CSFML_GRAPHICS_API sfBool sfRenderTexture_generateMipmap(sfRenderTexture* renderTexture);
+
 #endif // SFML_RENDERTEXTURE_H

include/SFML/Graphics/Texture.h

@@ -264,6 +264,31 @@ CSFML_GRAPHICS_API void sfTexture_setRepeated(sfTexture* texture, sfBool repeate
 ////////////////////////////////////////////////////////////
 CSFML_GRAPHICS_API sfBool sfTexture_isRepeated(const sfTexture* texture);
 
+////////////////////////////////////////////////////////////
+/// \brief Generate a mipmap using the current texture data
+///
+/// Mipmaps are pre-computed chains of optimized textures. Each
+/// level of texture in a mipmap is generated by halving each of
+/// the previous level's dimensions. This is done until the final
+/// level has the size of 1x1. The textures generated in this process may
+/// make use of more advanced filters which might improve the visual quality
+/// of textures when they are applied to objects much smaller than they are.
+/// This is known as minification. Because fewer texels (texture elements)
+/// have to be sampled from when heavily minified, usage of mipmaps
+/// can also improve rendering performance in certain scenarios.
+///
+/// Mipmap generation relies on the necessary OpenGL extension being
+/// available. If it is unavailable or generation fails due to another
+/// reason, this function will return false. Mipmap data is only valid from
+/// the time it is generated until the next time the base level image is
+/// modified, at which point this function will have to be called again to
+/// regenerate it.
+///
+/// \return sfTrue if mipmap generation was successful, sfFalse if unsuccessful
+///
+////////////////////////////////////////////////////////////
+CSFML_GRAPHICS_API sfBool sfTexture_generateMipmap(sfTexture* texture);
+
 ////////////////////////////////////////////////////////////
 /// \brief Get the underlying OpenGL handle of the texture.
 ///

src/SFML/Graphics/RenderTexture.cpp

@@ -281,3 +281,10 @@ sfBool sfRenderTexture_isRepeated(const sfRenderTexture* renderTexture)
 {
     CSFML_CALL_RETURN(renderTexture, isRepeated(), sfFalse);
 }
+
+
+////////////////////////////////////////////////////////////
+sfBool sfRenderTexture_generateMipmap(sfRenderTexture* renderTexture)
+{
+    CSFML_CALL_RETURN(renderTexture, generateMipmap(), sfFalse);
+}

src/SFML/Graphics/Texture.cpp

@@ -256,6 +256,13 @@ sfBool sfTexture_isRepeated(const sfTexture* texture)
 }
 
 
+////////////////////////////////////////////////////////////
+sfBool sfTexture_generateMipmap(sfTexture* texture)
+{
+    CSFML_CALL_PTR_RETURN(texture, generateMipmap(), sfFalse);
+}
+
+
 ////////////////////////////////////////////////////////////
 unsigned int sfTexture_getNativeHandle(const sfTexture* texture)
 {