diff options
author | Dave Parks <davep@lindenlab.com> | 2011-05-19 20:38:39 -0500 |
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committer | Dave Parks <davep@lindenlab.com> | 2011-05-19 20:38:39 -0500 |
commit | 51bb3c15c8ac6c85ed1a7e8526ba6b60794ac29e (patch) | |
tree | fb69cb7a3c1a98d271e0ee53880c7ad93a568502 /indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl | |
parent | 6898b2c6d53fc04384f194d264c1c61bbc08c90f (diff) |
SH-469 WIP -- get rid of LLMultiSampleBuffer and use GL_ARB_texture_multisample instead.
Diffstat (limited to 'indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl')
-rw-r--r-- | indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl b/indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl new file mode 100644 index 0000000000..a47ee678f6 --- /dev/null +++ b/indra/newview/app_settings/shaders/class2/deferred/edgeMSF.glsl @@ -0,0 +1,74 @@ +/** + * @file edgeF.glsl + * + * $LicenseInfo:firstyear=2007&license=viewerlgpl$ + * $/LicenseInfo$ + */ + +#version 120 + +#extension GL_ARB_texture_rectangle : enable +#extension GL_ARB_texture_multisample : enable + +uniform sampler2DMS depthMap; +uniform sampler2DMS normalMap; + +varying vec2 vary_fragcoord; + +uniform float depth_cutoff; +uniform float norm_cutoff; + +uniform mat4 inv_proj; +uniform vec2 screen_res; + +float getDepth(float z) +{ + z = z*2.0-1.0; + vec4 ndc = vec4(0.0, 0.0, z, 1.0); + vec4 p = inv_proj*ndc; + return p.z/p.w; +} + +void main() +{ + + float e = 0; + + ivec2 itc = ivec2(vary_fragcoord.xy); + + for (int i = 0; i < samples; i++) + { + vec3 norm = texelFetch(normalMap, itc, i).xyz; + norm = vec3((norm.xy-0.5)*2.0,norm.z); // unpack norm + float depth = getDepth(texelFetch(depthMap, itc, i).r); + + vec2 tc = vary_fragcoord.xy; + + float sc = 0.75; + + vec2 de; + de.x = (depth-getDepth(tc+vec2(sc, sc))) + (depth-getDepth(tc+vec2(-sc, -sc))); + de.y = (depth-getDepth(tc+vec2(-sc, sc))) + (depth-getDepth(tc+vec2(sc, -sc))); + de /= depth; + de *= de; + de = step(depth_cutoff, de); + + vec2 ne; + vec3 nexnorm = texture2DRect(normalMap, tc+vec2(-sc,-sc)).rgb; + nexnorm = vec3((nexnorm.xy-0.5)*2.0,nexnorm.z); // unpack norm + ne.x = dot(nexnorm, norm); + vec3 neynorm = texture2DRect(normalMap, tc+vec2(sc,sc)).rgb; + neynorm = vec3((neynorm.xy-0.5)*2.0,neynorm.z); // unpack norm + ne.y = dot(neynorm, norm); + + ne = 1.0-ne; + + ne = step(norm_cutoff, ne); + + e += dot(de,de)+dot(ne,ne); + } + + e /= samples; + + gl_FragColor.a = e; +} |