Sync wiki -> header

include/SDL_render.h

@@ -1618,6 +1618,7 @@ extern DECLSPEC int SDLCALL SDL_RenderCopyExF(SDL_Renderer * renderer,
  * vertex array Color and alpha modulation is done per vertex
  * (SDL_SetTextureColorMod and SDL_SetTextureAlphaMod are ignored).
  *
+ * \param renderer The rendering context.
  * \param texture (optional) The SDL texture to use.
  * \param vertices Vertices.
  * \param num_vertices Number of vertices.
@@ -1642,6 +1643,7 @@ extern DECLSPEC int SDLCALL SDL_RenderGeometry(SDL_Renderer *renderer,
  * vertex arrays Color and alpha modulation is done per vertex
  * (SDL_SetTextureColorMod and SDL_SetTextureAlphaMod are ignored).
  *
+ * \param renderer The rendering context.
  * \param texture (optional) The SDL texture to use.
  * \param xy Vertex positions
  * \param xy_stride Byte size to move from one element to the next element