X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=shaderlib%2Fambientocclusion.glsl;h=89d13357b67404dd5f06c180541d5723f372a34b;hp=0ca81a40b6cb21ed5fd8af08ce1852f25e94a46d;hb=ed5d922fd58c5cb1fc7502c93983d37fc871ddf5;hpb=e55f79ccb21e8c1be3d86f127e3ec1583e58ce92

diff --git a/shaderlib/ambientocclusion.glsl b/shaderlib/ambientocclusion.glsl
index 0ca81a40..89d13357 100644
--- a/shaderlib/ambientocclusion.glsl
+++ b/shaderlib/ambientocclusion.glsl
@@ -1,9 +1,31 @@
+const int max_samples = 32;
+
+uniform mat4 projection_matrix;
+
 uniform sampler2D depth;
 uniform sampler2D occlusion;
 uniform sampler2D rotate;
 uniform AmbientOcclusionParams
 {
-	vec2 screen_size;
-	vec2 depth_ratio;
+	mat4 inverse_projection;
 	float darkness;
+	vec3 sample_points[max_samples];
+	int n_samples;
+	float occlusion_radius;
+	float edge_depth_threshold;
 };
+
+#pragma MSP stage(fragment)
+vec3 project(vec3 position)
+{
+	if(position.z>=0.0)
+		return vec3(0.0, 0.0, -1.0);
+	vec4 pp = projection_matrix*vec4(position, 1.0);
+	return pp.xyz/pp.w;
+}
+
+vec3 unproject(vec3 position)
+{
+	vec4 upp = inverse_projection*vec4(position, 1.0);
+	return upp.xyz/upp.w;
+}