X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=shaderlib%2Fambientocclusion_combine.glsl;h=c1e7f27270a1388703ac8cc744901278180f2ac3;hp=f56bddbc520809cc37ca6ae8d0ca7753751907d6;hb=6a832fe1771f8c7bca0faa0d383fbbab062a1c56;hpb=12f65b4a7cd9739d399c685d22862297f325ca91

diff --git a/shaderlib/ambientocclusion_combine.glsl b/shaderlib/ambientocclusion_combine.glsl
index f56bddbc..c1e7f272 100644
--- a/shaderlib/ambientocclusion_combine.glsl
+++ b/shaderlib/ambientocclusion_combine.glsl
@@ -1,21 +1,23 @@
 import postprocess;
 import ambientocclusion;
 
-////// fragment
+#pragma MSP stage(fragment)
 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)*edge_depth_threshold;
+			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;