Added OpenGL renderer error checking.
Use fast-path texture formats in the OpenGL renderer.
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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401969
Fixed slowdown enumerating display modes, which was hosing OpenGL as well...
Removed SDL_ from the render driver prefixes
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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401958
display, which is a fast path used for the whole-surface SDL 1.2 API.
Solved the flicker problems by implementing a backbuffer in the GDI renderer.
Unfortunately, now using the GDI renderer with a backbuffer and HBITMAPs is
significantly slower than SDL's surface code. *sigh*
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extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%401942