Improve software lighting.

Apply ‘sw_modulate’ to world lightmaps. Treat negative dynamic lights
the same way as OpenGL renderer does. Properly transform dynamic lights
for moving entities. Bilinear filter lightmap samples for entity
lighting. Fix ‘r_fullbight’ and surfaces without lightmaps to be really
full bright.

1 files changed, 4 insertions, 5 deletions

diff --git a/src/refresh/sw/alias.c b/src/refresh/sw/alias.c
index 0970f6d..dad1748 100644
--- a/src/refresh/sw/alias.c
+++ b/src/refresh/sw/alias.c
@@ -472,8 +472,6 @@ static void R_AliasSetupSkin(void)
 /*
 ================
 R_AliasSetupLighting
-
-  FIXME: put lighting into tables
 ================
 */
 static void R_AliasSetupLighting(void)
@@ -484,13 +482,11 @@ static void R_AliasSetupLighting(void)
 
     // all components of light should be identical in software
     if (currententity->flags & RF_FULLBRIGHT) {
-        for (i = 0; i < 3; i++)
-            light[i] = 1.0;
+        VectorSet(light, 1, 1, 1);
     } else {
         R_LightPoint(currententity->origin, light);
     }
 
-
     if (currententity->flags & RF_MINLIGHT) {
         for (i = 0; i < 3; i++)
             if (light[i] < 0.1)
@@ -511,6 +507,9 @@ static void R_AliasSetupLighting(void)
         }
     }
 
+    for (i = 0; i < 3; i++)
+        clamp(light[i], 0, 1);
+
     j = LUMINANCE(light[0], light[1], light[2]) * 256;
 
     r_ambientlight = 0;