[quake3-commits] [ioquake/ioq3] 2a2646: Fix IQM quat normalize fail case

[Zack Middleton]

  Branch: refs/heads/master
  Home:   https://github.com/ioquake/ioq3
  Commit: 2a2646fe43887bf19494769f562904c4d2ed551a
      https://github.com/ioquake/ioq3/commit/2a2646fe43887bf19494769f562904c4d2ed551a
  Author: Zack Middleton <zack at cloemail.com>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M code/renderergl1/tr_model_iqm.c
    M code/renderergl2/tr_model_iqm.c

  Log Message:
  -----------
  Fix IQM quat normalize fail case

Should only happen with invalid models though.


  Commit: 0fbde293db42b26e41c54150a11abb10ec04df74
      https://github.com/ioquake/ioq3/commit/0fbde293db42b26e41c54150a11abb10ec04df74
  Author: Zack Middleton <zack at cloemail.com>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M code/sdl/sdl_glimp.c

  Log Message:
  -----------
  Remove erroneous newlines from Com_Error in sdl_glimp.c


  Commit: 350b8f9c7c88c002dccea4f0350f1919b86d3b4e
      https://github.com/ioquake/ioq3/commit/350b8f9c7c88c002dccea4f0350f1919b86d3b4e
  Author: Zack Middleton <zack at cloemail.com>
  Date:   2019-05-28 (Tue, 28 May 2019)

  Changed paths:
    M code/renderercommon/tr_common.h
    M code/renderergl1/tr_backend.c
    M code/renderergl1/tr_image.c
    M code/renderergl1/tr_init.c
    M code/renderergl2/tr_init.c
    M code/sdl/sdl_glimp.c

  Log Message:
  -----------
  Restore OpenGL 1.1 support (GL_CLAMP)

GL_CLAMP (clamp to border) was changed to GL_CLAMP_TO_EDGE in 2008
(f2baf359). In 2018 (ce1d5406) I made OpenGL 1.2 be required since
GL_CLAMP_TO_EDGE is used.

Restore support for GL_CLAMP in order to support OpenGL 1.1 like vanilla
Quake 3 does. This should allow using the default Microsoft Windows
GDI Generic OpenGL 1.1 driver (untested but it won't fail the version
check at least).

>From gpuinfo.org, it looks like drivers stopped advertising support for
GL_SGIS_texture_edge_clamp so use a version check in addition to the
extension check.

r_allowExtensions 0 disables using GL_CLAMP_TO_EDGE in the opengl1
renderer. GL_CLAMP support wasn't added to the opengl2 renderer.


Compare: https://github.com/ioquake/ioq3/compare/95b9cab4d644...350b8f9c7c88