7 commits

Author	SHA1	Message	Date
Christoph Oelckers	eb9d2d9917	- reactivate compatibility profile so that immediate mode drawing can be used on older hardware not supporting persistently mapped buffers. ... - reactivate alpha testing per fixed function pipeline - use the 'modern' way to define clip planes (GL_CLIP_DISTANCE). This is far more portable than the old glClipPlane method and a lot more robust than checking this in the fragment shader.	2014-07-17 02:37:18 +02:00
Christoph Oelckers	fc0cf4f998	- GZDoom now runs on an OpenGL core profile. :) ... It's probably still necessary to replace GLEW with another loader library. GLEW is pretty much broken on core OpenGL without some hacky workarounds...	2014-07-15 02:26:23 +02:00
Christoph Oelckers	84a49e37ee	- handle normals for spheremapped mirror surfaces using non-deprecated features. ... - move all WGL references out of global header files so that global wgl header include is no longer necessary	2014-07-14 19:54:07 +02:00
Christoph Oelckers	b61ef3a107	- bumped minimum supported OpenGL version to 1.4. The engine was already using several 1.3 and 1.4 features which would have caused problems on 1.2. ... - removed gl_vid_compatibility. With the bump to 1.4 no hardware requiring this flag is supported anymore. - disabled 16 bit framebuffers for the same reason. As a conseqence all code for rendering without stencil could also be removed.	2013-08-18 15:41:52 +02:00
Christoph Oelckers	761ab4ab78	- moved all system specific code out of gl_interface.cpp into the respective Video classes (Win32GLVideo andSDLGLVideo.) (SDL side not tested yet!)	2013-08-18 14:16:33 +02:00
Christoph Oelckers	b59d82ad5b	- made win32gliface.cpp more readable.	2013-08-18 12:38:38 +02:00
Christoph Oelckers	399d0974ab	- added GL render as of SVN revision 1600.	2013-06-23 09:49:34 +02:00