This bug report was migrated from our old Bugzilla tracker.

Reported in version: HG 2.0
Reported for operating system, platform: All, All

Comments on the original bug report:

On 2012-08-27 04:38:05 +0000, Pallav Nawani wrote:

Under OpenGL, SDL_LockTexture () provides access to potentially random data from system RAM. Under Direct3D, SDL_LockTexture() does actually provide access to Texture Data.

In particular this sequence will completely clobber the texture data under OpenGL:

SDL_LockTexture();
SDL_UnlockTexture();

While it will work fine under Direct3D.

This bug just caused me 3 wasted days >/

On 2012-09-28 03:30:40 +0000, Sam Lantinga wrote:

This is an intentional optimization to make streaming textures as fast as possible.
The documentation on the wiki has been clarified:
http://wiki.libsdl.org/moin.cgi/SDL_LockTexture

Thanks!