ilikecats/stk-code_catmod
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SSAO: Avoid sampling outside of RTT_NORMAL_AND_DEPTH textures.

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It should remove artifact at the edge of the screen.

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/main/trunk@14767 178a84e3-b1eb-0310-8ba1-8eac791a3b58
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vincentlj
2013-12-24 00:37:58 +00:00
parent ea7ac5391a
commit bd52770ceb
1 changed files with 2 additions and 1 deletions
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data/shaders/ssao.frag
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@@ -43,13 +43,14 @@ void main(void)
// Projection of sampleDir over nom
float cosTheta = samplePoints[i].z;
bool isInsideTexture = (sampleProj.x > -1.) && (sampleProj.x < 1.) && (sampleProj.y > -1.) && (sampleProj.y < 1.);
// get the depth of the occluder fragment
float occluderFragmentDepth = texture2D(normals_and_depth, (sampleProj.xy * 0.5) + 0.5).a;
// Position of the occluder fragment in worldSpace
vec4 occluderPos = invprojm * vec4(sampleProj.xy, 2.0 * occluderFragmentDepth - 1.0, 1.0f);
occluderPos /= occluderPos.w;
bool isOccluded = (sampleProj.z > (2. * occluderFragmentDepth - 1.0)) && (distance(FragPos, occluderPos) < radius);
bool isOccluded = isInsideTexture && (sampleProj.z > (2. * occluderFragmentDepth - 1.0)) && (distance(FragPos, occluderPos) < radius);
bl += isOccluded ? smoothstep(radius, 0, distance(samplePos, FragPos)) * cosTheta : 0.;
}