diff options
| -rw-r--r-- | indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl index f626609fc2..70568bc75f 100644 --- a/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl +++ b/indra/newview/app_settings/shaders/class1/deferred/shadowUtil.glsl @@ -120,6 +120,13 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen) float shadow = 0.0f; vec4 spos = vec4(shadow_pos,1.0); + + // if we know this point is facing away from the sun then we know it's in shadow without having to do a squirrelly shadow-map lookup + if (dp_directional_light <= 0.0) + { + return 0.0; + } + if (spos.z > -shadow_clip.w) { vec4 lpos; @@ -174,7 +181,8 @@ float sampleDirectionalShadow(vec3 pos, vec3 norm, vec2 pos_screen) shadow /= weight; } - return shadow; + + return min(dp_directional_light, shadow); } float sampleSpotShadow(vec3 pos, vec3 norm, int index, vec2 pos_screen) |