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Merge pull request #37 from babelshift/sdl-locktexture-allow-null-rect

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Adding overload for SDL_LockTexture to allow IntPtr.Zero for "rect" parameter
This commit is contained in:
Ethan Lee 2013-09-02 13:55:41 -07:00
parent 68b9cdcea9 49f4419656
commit 3f2eeba67f
1 changed files with 33 additions and 1 deletions
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34
src/SDL2.cs
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@ -1658,7 +1658,18 @@ namespace SDL2
out byte b
);
/* texture refers to an SDL_Texture*, pixels to a void* */
/// <summary>
/// Use this function to lock a portion of the texture for write-only pixel access.
/// </summary>
/// <param name="texture">the texture to lock for access, which was created with
/// SDL_TEXTUREACCESS_STREAMING (refers to a SDL_Texture*)</param>
/// <param name="rect">an SDL_Rect structure representing the area to lock for access;
/// NULL to lock the entire texture </param>
/// <param name="pixels">this is filled in with a pointer to the locked pixels, appropriately
/// offset by the locked area (refers to a void*)</param>
/// <param name="pitch">this is filled in with the pitch of the locked pixels </param>
/// <returns>Returns 0 on success or a negative error code if the texture is not valid or
/// was not created with SDL_TEXTUREACCESS_STREAMING; call <see cref="SDL_GetError()"/> for more information. </returns>
[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
public static extern int SDL_LockTexture(
IntPtr texture,
@ -1666,6 +1677,27 @@ namespace SDL2
out IntPtr pixels,
out int pitch
);
/// <summary>
/// Use this function to lock a portion of the texture for write-only pixel access. This overload
/// allows for passing an IntPtr.Zero (null) rect value to lock the entire texture.
/// </summary>
/// <param name="texture">the texture to lock for access, which was created with
/// SDL_TEXTUREACCESS_STREAMING (refers to a SDL_Texture*)</param>
/// <param name="rect">an SDL_Rect structure representing the area to lock for access;
/// NULL to lock the entire texture </param>
/// <param name="pixels">this is filled in with a pointer to the locked pixels, appropriately
/// offset by the locked area (refers to a void*)</param>
/// <param name="pitch">this is filled in with the pitch of the locked pixels </param>
/// <returns>Returns 0 on success or a negative error code if the texture is not valid or
/// was not created with SDL_TEXTUREACCESS_STREAMING; call <see cref="SDL_GetError()"/> for more information. </returns>
[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]
public static extern int SDL_LockTexture(
IntPtr texture,
IntPtr rect,
out IntPtr pixels,
out int pitch
);
/* texture refers to an SDL_Texture* */
[DllImport(nativeLibName, CallingConvention = CallingConvention.Cdecl)]