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optimized R_MarkLights (no longer checks sky/water, less recursion)

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Forest Hale 2000-09-22 04:58:49 +00:00
parent 7dc163eb61
commit fb028dcd6f
1 changed files with 35 additions and 7 deletions
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42
source/gl_rlight.c
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@ -198,6 +198,7 @@ R_MarkLights
*/
// LordHavoc: heavily modified, to eliminate unnecessary texture uploads,
// and support bmodel lighting better
// LordHavoc: optimized to nearly eliminate recursion, and skip sky/water (who made it check those?)
void R_MarkLights (vec3_t lightorigin, dlight_t *light, int bit, mnode_t *node)
{
mplane_t *splitplane;
@ -205,7 +206,8 @@ void R_MarkLights (vec3_t lightorigin, dlight_t *light, int bit, mnode_t *node)
msurface_t *surf;
int i, j, s, t;
vec3_t impact;
loc0:
if (node->contents < 0)
return;
@ -215,13 +217,21 @@ void R_MarkLights (vec3_t lightorigin, dlight_t *light, int bit, mnode_t *node)
if (dist > light->radius)
{
if (node->children[0]->contents >= 0) // save some time by not pushing another stack frame
R_MarkLights (lightorigin, light, bit, node->children[0]);
// R_MarkLights (lightorigin, light, bit, node->children[0]);
{
node = node->children[0];
goto loc0;
}
return;
}
if (dist < -light->radius)
{
if (node->children[1]->contents >= 0) // save some time by not pushing another stack frame
R_MarkLights (lightorigin, light, bit, node->children[1]);
// R_MarkLights (lightorigin, light, bit, node->children[1]);
{
node = node->children[1];
goto loc0;
}
return;
}
@ -231,6 +241,8 @@ void R_MarkLights (vec3_t lightorigin, dlight_t *light, int bit, mnode_t *node)
surf = cl.worldmodel->surfaces + node->firstsurface;
for (i=0 ; i<node->numsurfaces ; i++, surf++)
{
if (surf->flags & (SURF_DRAWTURB | SURF_DRAWSKY)) // water or sky
continue;
// LordHavoc: MAJOR dynamic light speedup here, eliminates marking of surfaces that are too far away from light, thus preventing unnecessary renders and uploads
for (j=0 ; j<3 ; j++)
impact[j] = lightorigin[j] - surf->plane->normal[j]*dist;
@ -255,10 +267,26 @@ void R_MarkLights (vec3_t lightorigin, dlight_t *light, int bit, mnode_t *node)
}
}
if (node->children[0]->contents >= 0) // save some time by not pushing another stack frame
R_MarkLights (lightorigin, light, bit, node->children[0]);
if (node->children[1]->contents >= 0) // save some time by not pushing another stack frame
R_MarkLights (lightorigin, light, bit, node->children[1]);
// if (node->children[0]->contents >= 0) // save some time by not pushing another stack frame
// R_MarkLights (lightorigin, light, bit, node->children[0]);
// if (node->children[1]->contents >= 0) // save some time by not pushing another stack frame
// R_MarkLights (lightorigin, light, bit, node->children[1]);
// LordHavoc: mangled to eliminate most recursive calls
if (node->children[0]->contents >= 0)
{
if (node->children[1]->contents >= 0)
R_MarkLights (lightorigin, light, bit, node->children[1]);
node = node->children[0];
goto loc0;
}
else
{
if (node->children[1]->contents >= 0)
{
node = node->children[1];
goto loc0;
}
}
}