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-rw-r--r--indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl66
1 files changed, 49 insertions, 17 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
index 229c2f4b67..8c4ccf9cb3 100644
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
@@ -26,7 +26,9 @@
#extension GL_ARB_texture_rectangle : enable
#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 gl_FragColor;
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
#endif
//class 2, shadows, no SSAO
@@ -129,11 +131,11 @@ void main()
/*if (pos.z == 0.0) // do nothing for sky *FIX: REMOVE THIS IF/WHEN THE POSITION MAP IS BEING USED AS A STENCIL
{
- gl_FragColor = vec4(0.0); // doesn't matter
+ frag_color = vec4(0.0); // doesn't matter
return;
}*/
- float shadow = 1.0;
+ float shadow = 0.0;
float dp_directional_light = max(0.0, dot(norm, sun_dir.xyz));
vec3 shadow_pos = pos.xyz + displace*norm;
@@ -152,32 +154,62 @@ void main()
{
vec4 lpos;
- if (spos.z < -shadow_clip.z)
+ vec4 near_split = shadow_clip*-0.75;
+ vec4 far_split = shadow_clip*-1.25;
+ vec4 transition_domain = near_split-far_split;
+ float weight = 0.0;
+
+ if (spos.z < near_split.z)
{
lpos = shadow_matrix[3]*spos;
lpos.xy *= shadow_res;
- shadow = pcfShadow(shadowMap3, lpos, 0.25);
+
+ float w = 1.0;
+ w -= max(spos.z-far_split.z, 0.0)/transition_domain.z;
+ shadow += pcfShadow(shadowMap3, lpos, 0.25)*w;
+ weight += w;
shadow += max((pos.z+shadow_clip.z)/(shadow_clip.z-shadow_clip.w)*2.0-1.0, 0.0);
}
- else if (spos.z < -shadow_clip.y)
+
+ if (spos.z < near_split.y && spos.z > far_split.z)
{
lpos = shadow_matrix[2]*spos;
lpos.xy *= shadow_res;
- shadow = pcfShadow(shadowMap2, lpos, 0.5);
+
+ float w = 1.0;
+ w -= max(spos.z-far_split.y, 0.0)/transition_domain.y;
+ w -= max(near_split.z-spos.z, 0.0)/transition_domain.z;
+ shadow += pcfShadow(shadowMap2, lpos, 0.75)*w;
+ weight += w;
}
- else if (spos.z < -shadow_clip.x)
+
+ if (spos.z < near_split.x && spos.z > far_split.y)
{
lpos = shadow_matrix[1]*spos;
lpos.xy *= shadow_res;
- shadow = pcfShadow(shadowMap1, lpos, 0.75);
+
+ float w = 1.0;
+ w -= max(spos.z-far_split.x, 0.0)/transition_domain.x;
+ w -= max(near_split.y-spos.z, 0.0)/transition_domain.y;
+ shadow += pcfShadow(shadowMap1, lpos, 0.75)*w;
+ weight += w;
}
- else
+
+ if (spos.z > far_split.x)
{
lpos = shadow_matrix[0]*spos;
lpos.xy *= shadow_res;
- shadow = pcfShadow(shadowMap0, lpos, 1.0);
+
+ float w = 1.0;
+ w -= max(near_split.x-spos.z, 0.0)/transition_domain.x;
+
+ shadow += pcfShadow(shadowMap0, lpos, 1.0)*w;
+ weight += w;
}
+
+ shadow /= weight;
+
// take the most-shadowed value out of these two:
// * the blurred sun shadow in the light (shadow) map
// * an unblurred dot product between the sun and this norm
@@ -198,19 +230,19 @@ void main()
shadow = 1.0;
}
- gl_FragColor[0] = shadow;
- gl_FragColor[1] = 1.0;
+ frag_color[0] = shadow;
+ frag_color[1] = 1.0;
spos = vec4(shadow_pos+norm*spot_shadow_offset, 1.0);
//spotlight shadow 1
vec4 lpos = shadow_matrix[4]*spos;
- gl_FragColor[2] = pcfShadow(shadowMap4, lpos, 0.8);
+ frag_color[2] = pcfShadow(shadowMap4, lpos, 0.8);
//spotlight shadow 2
lpos = shadow_matrix[5]*spos;
- gl_FragColor[3] = pcfShadow(shadowMap5, lpos, 0.8);
+ frag_color[3] = pcfShadow(shadowMap5, lpos, 0.8);
- //gl_FragColor.rgb = pos.xyz;
- //gl_FragColor.b = shadow;
+ //frag_color.rgb = pos.xyz;
+ //frag_color.b = shadow;
}