X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=shaderlib%2Fambientocclusion_combine.glsl;h=05aea60a6c811d3f802f6a2df53db08a99597d6d;hp=1e8bd821d48d1fa4b2ad749dd19bd4ad0b01d6ec;hb=7e67337718b38e23a24172806b23c744f5dc58fe;hpb=44b8b5f558dc07eab052994867e5247b73618253

diff --git a/shaderlib/ambientocclusion_combine.glsl b/shaderlib/ambientocclusion_combine.glsl
index 1e8bd821..05aea60a 100644
--- a/shaderlib/ambientocclusion_combine.glsl
+++ b/shaderlib/ambientocclusion_combine.glsl
@@ -5,17 +5,19 @@ import ambientocclusion;
 void main()
 {
 	vec3 center = unproject(vec3(vertex.xy, texture(depth, texcoord).r));
-	float min_depth = project(vec3(center.xy, center.z+occlusion_radius*0.1)).z;
-	float max_depth = project(vec3(center.xy, center.z-occlusion_radius*0.1)).z;
 	vec2 tex_scale = 1.0/vec2(textureSize(occlusion, 0));
 	float sum = 0.0;
 	float count = 0.0;
 	for(int i=0; i<4; ++i)
 		for(int j=0; j<4; ++j)
 		{
-			vec2 offset = vec2(float(i)-1.5, float(j)-1.5)*tex_scale;
-			float occ = texture(occlusion, texcoord+offset).r;
-			float sample = texture(depth, texcoord+offset).r;
+			vec2 offset = vec2(float(i), float(j))-1.5;
+			vec2 sample_coord = texcoord+offset*tex_scale;
+			float occ = texture(occlusion, sample_coord).r;
+			float sample = texture(depth, sample_coord).r;
+			float z_range = occlusion_radius*length(offset)*0.1;
+			float min_depth = project(vec3(center.xy, center.z+z_range)).z;
+			float max_depth = project(vec3(center.xy, center.z-z_range)).z;
 			if(sample>=min_depth && sample<=max_depth)
 			{
 				sum += occ;