fix fog for GL_SRC_ALPHA GL_ONE

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@10899 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/gl_rmain.c b/gl_rmain.c
index 8566fd47da12d50662342be4b1348ae7142f017e..5aed6a0554efb3242d0ed620d2e0496d45d91cb7 100644 (file)
--- a/gl_rmain.c
+++ b/gl_rmain.c
@@ -2539,6 +2539,8 @@ void R_SetupShader_Surface(const vec3_t lightcolorbase, qboolean modellighting,
        }
        if(!allow_colormod)
                colormod = dummy_colormod;
+       if(rsurface.texture->currentmaterialflags & MATERIALFLAG_ADD)
+               allow_fog = allow_colormod; // we actually implement fog by colormodding with a color (f,f,f) for some f
        if(!allow_fog)
                permutation &= ~(SHADERPERMUTATION_FOGHEIGHTTEXTURE | SHADERPERMUTATION_FOGOUTSIDE | SHADERPERMUTATION_FOGINSIDE);
        switch(vid.renderpath)