diff options
Diffstat (limited to 'indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl')
| -rwxr-xr-x[-rw-r--r--] | indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl | 29 |
1 files changed, 22 insertions, 7 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl index 2dcd3d656f..b5ff6404ea 100644..100755 --- a/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl +++ b/indra/newview/app_settings/shaders/class2/deferred/sunLightSSAOF.glsl @@ -66,6 +66,23 @@ 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).r; @@ -186,11 +203,9 @@ void main() vec4 pos = getPosition(pos_screen); - vec4 nmap4 = texture2DRect(normalMap, pos_screen); - nmap4 = vec4((nmap4.xyz-0.5)*2.0,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 { frag_color = vec4(0.0); // doesn't matter @@ -199,8 +214,8 @@ void main() float shadow = 0.0; float dp_directional_light = max(0.0, dot(norm, sun_dir.xyz)); - - vec3 shadow_pos = pos.xyz + displace*norm; + + 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); |