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-rwxr-xr-x[-rw-r--r--]indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl187
1 files changed, 125 insertions, 62 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
index f565d3bdb9..95c09d3238 100644..100755
--- a/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
+++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightF.glsl
@@ -2,24 +2,45 @@
* @file sunLightF.glsl
*
* $LicenseInfo:firstyear=2007&license=viewerlgpl$
+ * Second Life Viewer Source Code
+ * Copyright (C) 2007, Linden Research, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation;
+ * version 2.1 of the License only.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#extension GL_ARB_texture_rectangle : enable
+#ifdef DEFINE_GL_FRAGCOLOR
+out vec4 frag_color;
+#else
+#define frag_color gl_FragColor
+#endif
+
//class 2, shadows, no SSAO
uniform sampler2DRect depthMap;
uniform sampler2DRect normalMap;
-uniform sampler2DRectShadow shadowMap0;
-uniform sampler2DRectShadow shadowMap1;
-uniform sampler2DRectShadow shadowMap2;
-uniform sampler2DRectShadow shadowMap3;
+uniform sampler2DShadow shadowMap0;
+uniform sampler2DShadow shadowMap1;
+uniform sampler2DShadow shadowMap2;
+uniform sampler2DShadow shadowMap3;
uniform sampler2DShadow shadowMap4;
uniform sampler2DShadow shadowMap5;
-uniform sampler2D noiseMap;
-
-uniform sampler2D lightFunc;
// Inputs
@@ -30,23 +51,40 @@ uniform float ssao_max_radius;
uniform float ssao_factor;
uniform float ssao_factor_inv;
-varying vec2 vary_fragcoord;
-varying vec4 vary_light;
+VARYING vec2 vary_fragcoord;
uniform mat4 inv_proj;
uniform vec2 screen_res;
-uniform vec2 shadow_res;
uniform vec2 proj_shadow_res;
+uniform vec3 sun_dir;
+uniform vec2 shadow_res;
uniform float shadow_bias;
uniform float shadow_offset;
uniform float spot_shadow_bias;
uniform float spot_shadow_offset;
+vec2 encode_normal(vec3 n)
+{
+ float f = sqrt(8 * n.z + 8);
+ return n.xy / f + 0.5;
+}
+
+vec3 decode_normal (vec2 enc)
+{
+ vec2 fenc = enc*4-2;
+ float f = dot(fenc,fenc);
+ float g = sqrt(1-f/4);
+ vec3 n;
+ n.xy = fenc*g;
+ n.z = 1-f/2;
+ return n;
+}
+
vec4 getPosition(vec2 pos_screen)
{
- float depth = texture2DRect(depthMap, pos_screen.xy).a;
+ float depth = texture2DRect(depthMap, pos_screen.xy).r;
vec2 sc = pos_screen.xy*2.0;
sc /= screen_res;
sc -= vec2(1.0,1.0);
@@ -57,42 +95,43 @@ vec4 getPosition(vec2 pos_screen)
return pos;
}
-float pcfShadow(sampler2DRectShadow shadowMap, vec4 stc, float scl)
+float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float scl, vec2 pos_screen)
{
stc.xyz /= stc.w;
- stc.z += shadow_bias*scl;
-
- float cs = shadow2DRect(shadowMap, stc.xyz).x;
+ stc.z += shadow_bias;
+
+ stc.x = floor(stc.x*shadow_res.x + fract(pos_screen.y*0.666666666))/shadow_res.x; // add some jitter to X sample pos according to Y to disguise the snapping going on here
+ float cs = shadow2D(shadowMap, stc.xyz).x;
+
float shadow = cs;
- shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(1.5, 1.5, 0.0)).x, cs);
- shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(1.5, -1.5, 0.0)).x, cs);
- shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(-1.5, 1.5, 0.0)).x, cs);
- shadow += max(shadow2DRect(shadowMap, stc.xyz+vec3(-1.5, -1.5, 0.0)).x, cs);
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(-2.0/shadow_res.x, 1.5/shadow_res.y, 0.0)).x;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(-1.0/shadow_res.x, -1.5/shadow_res.y, 0.0)).x;
+
- return shadow/5.0;
-
- //return shadow;
+ return shadow*0.2;
}
-float pcfShadow(sampler2DShadow shadowMap, vec4 stc, float scl)
+float pcfSpotShadow(sampler2DShadow shadowMap, vec4 stc, float scl, vec2 pos_screen)
{
stc.xyz /= stc.w;
stc.z += spot_shadow_bias*scl;
-
+ stc.x = floor(proj_shadow_res.x * stc.x + fract(pos_screen.y*0.666666666)) / proj_shadow_res.x; // snap
+
float cs = shadow2D(shadowMap, stc.xyz).x;
float shadow = cs;
- vec2 off = 1.5/proj_shadow_res;
+ vec2 off = 1.0/proj_shadow_res;
+ off.y *= 1.5;
- shadow += max(shadow2D(shadowMap, stc.xyz+vec3(off.x, off.y, 0.0)).x, cs);
- shadow += max(shadow2D(shadowMap, stc.xyz+vec3(off.x, -off.y, 0.0)).x, cs);
- shadow += max(shadow2D(shadowMap, stc.xyz+vec3(-off.x, off.y, 0.0)).x, cs);
- shadow += max(shadow2D(shadowMap, stc.xyz+vec3(-off.x, -off.y, 0.0)).x, cs);
-
- return shadow/5.0;
-
- //return shadow;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(off.x*2.0, off.y, 0.0)).x;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(off.x, -off.y, 0.0)).x;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x, off.y, 0.0)).x;
+ shadow += shadow2D(shadowMap, stc.xyz+vec3(-off.x*2.0, -off.y, 0.0)).x;
+
+ return shadow*0.2;
}
void main()
@@ -103,22 +142,20 @@ void main()
vec4 pos = getPosition(pos_screen);
- vec4 nmap4 = texture2DRect(normalMap, pos_screen);
- nmap4 = vec4((nmap4.xy-0.5)*2.0,nmap4.z,nmap4.w); // unpack norm
- float displace = nmap4.w;
- vec3 norm = nmap4.xyz;
-
+ vec3 norm = texture2DRect(normalMap, pos_screen).xyz;
+ norm = decode_normal(norm.xy); // unpack norm
+
/*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 dp_directional_light = max(0.0, dot(norm, vary_light.xyz));
-
- vec3 shadow_pos = pos.xyz + displace*norm;
- vec3 offset = vary_light.xyz * (1.0-dp_directional_light);
+ float shadow = 0.0;
+ float dp_directional_light = max(0.0, dot(norm, sun_dir.xyz));
+
+ vec3 shadow_pos = pos.xyz;
+ vec3 offset = sun_dir.xyz * (1.0-dp_directional_light);
vec4 spos = vec4(shadow_pos+offset*shadow_offset, 1.0);
@@ -133,32 +170,58 @@ 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, pos_screen)*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, 0.5, pos_screen)*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, pos_screen)*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, pos_screen)*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
@@ -179,19 +242,19 @@ 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] = pcfSpotShadow(shadowMap4, lpos, 0.8, pos_screen);
//spotlight shadow 2
lpos = shadow_matrix[5]*spos;
- gl_FragColor[3] = pcfShadow(shadowMap5, lpos, 0.8);
+ frag_color[3] = pcfSpotShadow(shadowMap5, lpos, 0.8, pos_screen);
- //gl_FragColor.rgb = pos.xyz;
- //gl_FragColor.b = shadow;
+ //frag_color.rgb = pos.xyz;
+ //frag_color.b = shadow;
}
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-11 13:06:50 +0000