Quite a lot of quality of life improvements and bug fixes in this release.

The largest amount of time was spent on some opengl optimisations. I spent quite a while working on getting opengl vertex buffers working the way I wanted for a bit of a performance boost. Added a vertex program that helps with alias model rendering and a fragment shader to render warping water surfaces more efficiently.

Changelog:

• Add support for scaling the software renderer output by a factor of 2 or 4
• Add translucent HUD support ("scr_sbaralpha")
• Add support for OpenGL vertex program animation interpolation
• Add support for OpenGL fragment program water surface warping
• Add support for OpenGL buffer objects to improve rendering performance
• Add support for DXT texture compression (greatly helps low-memory systems)
• Add vsync support for most platforms ("vid_vsync")
• Add anisotropic filtering for OpenGL ("gl_texture_anisotropy")
• Add back the vid mode test functionality
• Add cl_maxpitch and cl_minpitch console variables (default 90/-90)
• Improve FOV calculations to work better with widescreen aspect ratios
• Improved dynamic lighting performance on OpenGL (removed redundant updates)
• Fix a few software renderer entity alpha bugs
• Fix a few more texture reloading bugs in OpenGL
• Fix framerate on windows when compiled with SDL video/input
• Fix a few model/sprite clipping bugs the could crash the software renderer

Download from the TyrQuake page.