added r_enableshadowvolumes cvar, this defaults to 1 but can be turned

[xonotic/darkplaces.git] / gl_rsurf.c

diff --git a/gl_rsurf.c b/gl_rsurf.c
index 6a97fb5089b6a5b109888cd84aa63d7be3e4352c..6689a44ff9dd1d254f552978541555631fabbd50 100644 (file)
--- a/gl_rsurf.c
+++ b/gl_rsurf.c
@@ -1247,6 +1247,9 @@ void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigi
        msurface_t *surface;
        int surfacelistindex;
        float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
+       // if triangle neighbors are disabled, shadowvolumes are disabled
+       if (!model->brush.shadowmesh->neighbor3i)
+               return;
        r_shadow_compilingrtlight->static_meshchain_shadow_zfail = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
        R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
        for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
@@ -1275,6 +1278,9 @@ void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, const vec3_t relativelightor
                GL_PolygonOffset(r_refdef.shadowpolygonfactor + r_polygonoffset_submodel_factor.value, r_refdef.shadowpolygonoffset + r_polygonoffset_submodel_offset.value);
        if (model->brush.shadowmesh)
        {
+               // if triangle neighbors are disabled, shadowvolumes are disabled
+               if (!model->brush.shadowmesh->neighbor3i)
+                       return;
                R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
                for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
                {
@@ -1287,6 +1293,9 @@ void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, const vec3_t relativelightor
        }
        else
        {
+               // if triangle neighbors are disabled, shadowvolumes are disabled
+               if (!model->surfmesh.data_neighbor3i)
+                       return;
                projectdistance = lightradius + model->radius*2;
                R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
                // identify lit faces within the bounding box