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validate that we actually have a proper implementation of GL_ARB_vertex_array_object, to avoid virtualbox crashes

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git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@4128 fc73d0e0-1445-4013-8a0c-d673dee63da5
This commit is contained in:
Spoike 2012-10-14 10:55:09 +00:00
parent 670dadcecf
commit b84d03a87c
1 changed files with 17 additions and 3 deletions
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20
engine/gl/gl_vidcommon.c
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@ -797,6 +797,23 @@ void GL_CheckExtensions (void *(*getglfunction) (char *name))
}
//we only use vao with shaders anyway.
if (!gl_config.arb_shader_objects)
{
//don't bother if we've no glsl
qglGenVertexArrays = NULL;
qglBindVertexArray = NULL;
}
else if (gl_config.glversion >= 3)
{
/*yay core!*/
qglGenVertexArrays = (void *)getglext("glGenVertexArrays");
qglBindVertexArray = (void *)getglext("glBindVertexArray");
}
else if (GL_CheckExtension("GL_ARB_vertex_array_object"))
{
qglGenVertexArrays = (void *)getglext("glGenVertexArraysARB");
qglBindVertexArray = (void *)getglext("glBindVertexArrayARB");
}
else
{
qglGenVertexArrays = NULL;
qglBindVertexArray = NULL;
@ -1460,9 +1477,6 @@ void GL_Init(void *(*getglfunction) (char *name))
qglPopAttrib = (void *)getglcore("glPopAttrib");
qglScissor = (void *)getglcore("glScissor");
qglGenVertexArrays = (void *)getglext("glGenVertexArrays");
qglBindVertexArray = (void *)getglext("glBindVertexArray");
//does this need to be non-core as well?
qglFogi = (void *)getglcore("glFogi");
qglFogf = (void *)getglcore("glFogf");