revert an optimization to shadow volume generation that saved a little cpu time but...

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@4629 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/r_shadow.c b/r_shadow.c
index ad071ac82a6d45406a03c45284a74173d2014fdb..12da8519697f9a36a7c57870b689fbd4ea6e45a9 100644 (file)
--- a/r_shadow.c
+++ b/r_shadow.c
@@ -503,6 +503,7 @@ void R_Shadow_PrepareShadowMark(int numtris)
 int R_Shadow_ConstructShadowVolume(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
 {
        int i, j, tris = 0, vr[3], t, outvertices = 0;
 int R_Shadow_ConstructShadowVolume(int innumvertices, int innumtris, const int *inelement3i, const int *inneighbor3i, const float *invertex3f, int *outnumvertices, int *outelement3i, float *outvertex3f, const float *projectorigin, float projectdistance, int numshadowmarktris, const int *shadowmarktris)
 {
        int i, j, tris = 0, vr[3], t, outvertices = 0;

+       float f, temp[3];

        const int *e, *n;
        const float *v;
 
        const int *e, *n;
        const float *v;
 


@@ -540,22 +541,12 @@ int R_Shadow_ConstructShadowVolume(int innumvertices, int innumtris, const int *
                                vertexupdate[e[j]] = vertexupdatenum;
                                vertexremap[e[j]] = outvertices;
                                v = invertex3f + e[j] * 3;
                                vertexupdate[e[j]] = vertexupdatenum;
                                vertexremap[e[j]] = outvertices;
                                v = invertex3f + e[j] * 3;

-#if 1
-                               outvertex3f[0] = v[0];
-                               outvertex3f[1] = v[1];
-                               outvertex3f[2] = v[2];
-                               outvertex3f[3] = v[0] + 1000000 * (v[0] - projectorigin[0]);
-                               outvertex3f[4] = v[1] + 1000000 * (v[1] - projectorigin[1]);
-                               outvertex3f[5] = v[2] + 1000000 * (v[2] - projectorigin[2]);
-#else
-{
-float f, temp[3];
+                               // project one copy of the vertex to the sphere radius of the light
+                               // (FIXME: would projecting it to the light box be better?)

                                VectorSubtract(v, projectorigin, temp);
                                f = projectdistance / VectorLength(temp);
                                VectorCopy(v, outvertex3f);
                                VectorMA(projectorigin, f, temp, (outvertex3f + 3));
                                VectorSubtract(v, projectorigin, temp);
                                f = projectdistance / VectorLength(temp);
                                VectorCopy(v, outvertex3f);
                                VectorMA(projectorigin, f, temp, (outvertex3f + 3));

-}
-#endif

                                outvertex3f += 6;
                                outvertices += 2;
                        }
                                outvertex3f += 6;
                                outvertices += 2;
                        }