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Help => Graphics => Topic started by: jdindia on November 29, 2008, 05:58:08 am

Title: Why does each sprite set the projection matrix?
Post by: jdindia on November 29, 2008, 05:58:08 am

I've recently started using SFML in a platform game.  Because I had polygonal textured tiles, I had to do a bit of source browsing to make sure my OpenGL calls wouldn't cause trouble with the generic SFML sprites I was using.

I discovered that the SFML RenderWindow Draw call was setting the projection matrix and then calling the drawable's render function.  This seems a bit strange to me.  I'd expect SetView to change the matrix and then everything else to assume it had been set properly.

Title: Why does each sprite set the projection matrix?
Post by: Imbue on November 29, 2008, 06:11:30 am

SFML does have a sf::RenderTarget::PreserveOpenGLStates() function you may want to look into.

I'm doing a very small amount of OpenGL and I haven't had any problems yet.