ignore GL_EXT_texture3D extension if it reports a bogus GL_MAX_3D_TEXTURE_SIZE

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@6432 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/vid_shared.c b/vid_shared.c
index 46325de89f8a51b322f34ccbe0f51cdd0cb06da9..2504c2867541b36376aa9014d243008f14176a99 100644 (file)
--- a/vid_shared.c
+++ b/vid_shared.c
@@ -665,7 +665,14 @@ void VID_CheckExtensions(void)
 
 // COMMANDLINEOPTION: GL: -notexture3d disables GL_EXT_texture3D (required for spherical lights, otherwise they render as a column)
        if ((gl_texture3d = GL_CheckExtension("GL_EXT_texture3D", texture3dextfuncs, "-notexture3d", false)))
+       {
                qglGetIntegerv(GL_MAX_3D_TEXTURE_SIZE, &gl_max_3d_texture_size);
+               if (gl_max_3d_texture_size < 32)
+               {
+                       gl_texture3d = false;
+                       Con_Printf("GL_EXT_texture3D reported bogus GL_MAX_3D_TEXTURE_SIZE, disabled\n");
+               }
+       }
 // COMMANDLINEOPTION: GL: -nocubemap disables GL_ARB_texture_cube_map (required for bumpmapping)
        if ((gl_texturecubemap = GL_CheckExtension("GL_ARB_texture_cube_map", NULL, "-nocubemap", false)))
                qglGetIntegerv(GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB, &gl_max_cube_map_texture_size);